The user wants to start "phase 5" of the Anchor engine development. I should first read the relevant documentation to understand the current state of the project and what phase 5 might entail. Let me look at the docs mentioned in CLAUDE.md to get context.

1→# Anchor API Patterns (Speculative)
     2→
     3→**Note:** These patterns were designed against a theoretical API that hasn't been implemented yet. They will need to be revised once the actual API is built. Archived here for reference.
     4→
     5→---
     6→
     7→## Code Patterns
     8→
     9→### Comment Style
    10→
    11→Use minimal single-line comments. Avoid multi-line decorative banners:
    12→
    13→```c
    14→// Bad
    15→//----------------------------------------------------------
    16→// Layer
    17→//----------------------------------------------------------
    18→
    19→// Good
    20→// Layer
    21→```
    22→
    23→### Single-Letter Aliases
    24→
    25→Anchor provides single-letter aliases that look like runes:
    26→
    27→```lua
    28→E = object                                        -- Entity/object
    29→U = function(name_or_fn, fn) ... end              -- U(fn) or U('name', fn)
    30→L = function(name_or_fn, fn) ... end              -- L(fn) or L('name', fn)
... [593 more lines]

1→# Anchor Context Brief
     2→
     3→*This document captures the reasoning, philosophy, and decision-making style behind Anchor's design. Read this to understand *why* decisions were made and *how* to evaluate new ideas.*
     4→
     5→---
     6→
     7→## The Developer
     8→
     9→a327ex is a solo indie game developer who has shipped successful games (BYTEPATH, SNKRX). Works primarily by intuition — choices are made because they "feel right" or "look nice" before rational justification. Rational thinking fills in the parts intuition doesn't have opinions on.
    10→
    11→This means:
    12→- Aesthetic judgments are valid and often primary ("this syntax looks better")
    13→- Exploring the possibility space matters more than committing early
    14→- Conversation is the design tool — talking through options surfaces what feels right
    15→- Specs are artifacts of conversation, not contracts to implement literally
    16→
    17→When evaluating features: "Would this feel right to use?" matters as much as "Is this technically sound?"
    18→
    19→---
    20→
    21→## Core Design Values
    22→
    23→### Locality Above All
    24→
    25→Code should be understandable by looking at one place. This serves:
    26→- Human cognition (limited working memory)
    27→- LLM cognition (finite context window)
    28→- Solo developer workflow (must understand own code months later)
    29→
    30→The operator syntax exists because it lets you declare an object, its properties, its behaviors, and its place in the tree *in one expression*:
... [101 more lines]

1→# Anchor Engine Specification
     2→
     3→*Anchor is a 2D game engine built around locality of behavior and minimal cognitive overhead. Code that belongs together stays together.*
     4→
     5→---
     6→
     7→## Table of Contents
     8→
     9→1. [Core Philosophy](#core-philosophy)
    10→2. [The Object Tree](#the-object-tree)
    11→3. [Lifecycle](#lifecycle)
    12→4. [Colliders, Springs, and Timers](#colliders-springs-and-timers)
    13→5. [Locality of Behavior](#locality-of-behavior)
    14→6. [Drawing](#drawing)
    15→7. [Lua Syntax Features](#lua-syntax-features)
    16→8. [YueScript Alternative](#yuescript-alternative)
    17→9. [YueScript Class System Integration](#yuescript-class-system-integration)
    18→10. [Technology Stack](#technology-stack)
    19→11. [Rendering](#rendering)
    20→12. [Error Handling](#error-handling)
    21→13. [Build and Distribution](#build-and-distribution)
    22→14. [File Structure](#file-structure)
    23→15. [Performance Path](#performance-path)
    24→16. [Deferred Features](#deferred-features)
    25→
    26→---
    27→
    28→## Core Philosophy
    29→
    30→### Locality of Behavior
... [1473 more lines]

Now I understand the Anchor engine project. Looking at the git log, I see there have been phases 1-4 already completed. Let me look at the current state of the engine code and the test game to understand what's been implemented so far and what might be next for phase 5.

The recent commits show:

- Phase 4
- Review 1
- Phase 3 parts

Let me check the current state of the engine and test code to understand what's been built and what might be next.

E:\a327ex\Anchor\test\old_main.lua
E:\a327ex\Anchor\test\main.lua

File content (26221 tokens) exceeds maximum allowed tokens (25000). Please use offset and limit parameters to read specific portions of the file, or use the GrepTool to search for specific content.

The anchor.c file is large - let me read it in portions to understand what's implemented, and also read the test main.lua to see what's working.

1→print("main.lua loaded - Effects Test")
     2→
     3→set_shape_filter("rough")
     4→
     5→local screen_w, screen_h = 480, 270
     6→
     7→-- Background color from twitter_emoji theme (48, 49, 50)
     8→local bg_color = rgba(231, 232, 233, 255)
     9→
    10→-- Create layers (order matters: first = bottom, last = top)
    11→local bg_layer = layer_create('background')
    12→local shadow_layer = layer_create('shadow')
    13→local outline_layer = layer_create('outline')
    14→local game_layer = layer_create('game')
    15→
    16→-- Load shaders
    17→local shadow_shader = shader_load_file('shaders/shadow.frag')
    18→local outline_shader = shader_load_file('shaders/outline.frag')
    19→print("Shadow shader loaded: " .. tostring(shadow_shader))
    20→print("Outline shader loaded: " .. tostring(outline_shader))
    21→
    22→-- Load textures
    23→local smile_tex = texture_load("assets/slight_smile.png")
    24→local star_tex = texture_load("assets/star.png")
    25→
    26→-- Target display sizes
    27→local smile_size = 36
    28→local star_size = 14
    29→
    30→-- Calculate scale factors (textures are 512x512)
... [146 more lines]

1→/*
     2→ * Anchor Engine
     3→ * Phase 1: Window + OpenGL + Lua integration
     4→ * Phase 2: Web build (Emscripten/WebGL)
     5→ * Phase 3: Rendering (layers, shapes, sprites, transforms, blend modes)
     6→ */
     7→
     8→#include <stdio.h>
     9→#include <stdlib.h>
    10→#include <stdbool.h>
    11→#include <string.h>
    12→#include <math.h>
    13→
    14→#ifdef _WIN32
    15→#include <direct.h>  // _chdir
    16→#else
    17→#include <unistd.h>  // chdir
    18→#endif
    19→
    20→#include <SDL.h>
    21→
    22→#ifdef __EMSCRIPTEN__
    23→    #include <emscripten.h>
    24→    #include <emscripten/html5.h>
    25→    #include <GLES3/gl3.h>
    26→#else
    27→    #include <glad/gl.h>
    28→#endif
    29→
    30→#include <lua.h>
... [470 more lines]

Let me continue reading the anchor.c to understand what's been implemented. I've seen:

- Window/SDL2 integration
- OpenGL rendering with layers
- Transform stack
- Command queue for deferred rendering
- Textures with stb_image
- Batch rendering system
- SDF shapes (rectangles, circles)
- Sprites
- Blend modes
- Effect ping-pong buffers

Let me read more of the code to see what else is there and what might be missing for phase 5.

500→                               float x2, float y2, float x3, float y3,
   501→                               float r, float g, float b, float a,
   502→                               float type, float s0, float s1, float s2, float s3,
   503→                               float addR, float addG, float addB) {
   504→    // Quad corners with UVs:
   505→    // 0(0,0)---1(1,0)
   506→    // |         |
   507→    // 3(0,1)---2(1,1)
   508→
   509→    // Triangle 1: 0, 1, 2
   510→    batch_add_vertex(x0, y0, 0.0f, 0.0f, r, g, b, a, type, s0, s1, s2, s3, addR, addG, addB);
   511→    batch_add_vertex(x1, y1, 1.0f, 0.0f, r, g, b, a, type, s0, s1, s2, s3, addR, addG, addB);
   512→    batch_add_vertex(x2, y2, 1.0f, 1.0f, r, g, b, a, type, s0, s1, s2, s3, addR, addG, addB);
   513→    // Triangle 2: 0, 2, 3
   514→    batch_add_vertex(x0, y0, 0.0f, 0.0f, r, g, b, a, type, s0, s1, s2, s3, addR, addG, addB);
   515→    batch_add_vertex(x2, y2, 1.0f, 1.0f, r, g, b, a, type, s0, s1, s2, s3, addR, addG, addB);
   516→    batch_add_vertex(x3, y3, 0.0f, 1.0f, r, g, b, a, type, s0, s1, s2, s3, addR, addG, addB);
   517→}
   518→
   519→static SDL_Window* window = NULL;
   520→static SDL_GLContext gl_context = NULL;
   521→static lua_State* L = NULL;
   522→static bool error_state = false;
   523→static char error_message[4096] = {0};
   524→
   525→// Rendering state
   526→static GLuint shader_program = 0;
   527→static GLuint vao = 0;
   528→static GLuint vbo = 0;
   529→
... [470 more lines]

1000→static void effect_shader_destroy(GLuint shader);
  1001→static void shader_set_float(GLuint shader, const char* name, float value);
  1002→static void shader_set_vec2(GLuint shader, const char* name, float x, float y);
  1003→static void shader_set_vec4(GLuint shader, const char* name, float x, float y, float z, float w);
  1004→static void shader_set_int(GLuint shader, const char* name, int value);
  1005→static void shader_set_texture(GLuint shader, const char* name, GLuint texture, int unit);
  1006→
  1007→// Lua bindings
  1008→static int l_layer_create(lua_State* L) {
  1009→    const char* name = luaL_checkstring(L, 1);
  1010→    Layer* layer = layer_get_or_create(name);
  1011→    if (!layer) {
  1012→        return luaL_error(L, "Failed to create layer: %s", name);
  1013→    }
  1014→    lua_pushlightuserdata(L, layer);
  1015→    return 1;
  1016→}
  1017→
  1018→static int l_layer_rectangle(lua_State* L) {
  1019→    Layer* layer = (Layer*)lua_touserdata(L, 1);
  1020→    float x = (float)luaL_checknumber(L, 2);
  1021→    float y = (float)luaL_checknumber(L, 3);
  1022→    float w = (float)luaL_checknumber(L, 4);
  1023→    float h = (float)luaL_checknumber(L, 5);
  1024→    uint32_t color = (uint32_t)luaL_checkinteger(L, 6);
  1025→    layer_add_rectangle(layer, x, y, w, h, color);
  1026→    return 0;
  1027→}
  1028→
  1029→static int l_layer_circle(lua_State* L) {
... [470 more lines]

I've read a good portion of the anchor.c file. Let me continue to see the rest to understand the full scope of what's implemented.

From what I've seen so far:

- Phase 1: Window + OpenGL + Lua integration (complete)
- Phase 2: Web build/Emscripten (complete, see the #ifdef __EMSCRIPTEN__)
- Phase 3: Rendering system (complete)
  - Layers with FBOs
  - Transform stack
  - Command queue for deferred rendering
  - Shapes: rectangles, circles (SDF-based)
  - Sprites/textures
  - Blend modes (alpha, additive)
  - Batch rendering
  - Effect shaders with ping-pong buffers
  - Manual layer compositing

What I haven't seen yet but should check:

- Physics (Box2D integration)
- Audio
- Input handling
- Object tree system

Let me read more of the file to see what else is there, specifically the main loop and any other systems.

1500→    }
  1501→    size_t read_size = fread(buffer, 1, size, f);
  1502→    buffer[read_size] = '\0';
  1503→    fclose(f);
  1504→    return buffer;
  1505→}
  1506→
  1507→// Create an effect shader program from fragment source (uses screen_vertex_source)
  1508→static GLuint effect_shader_load_string(const char* frag_source) {
  1509→    return create_shader_program(screen_vertex_source, frag_source);
  1510→}
  1511→
  1512→// Create an effect shader program from a fragment shader file
  1513→static GLuint effect_shader_load_file(const char* path) {
  1514→    char* source = read_file_to_string(path);
  1515→    if (!source) return 0;
  1516→    GLuint shader = effect_shader_load_string(source);
  1517→    free(source);
  1518→    if (shader) {
  1519→        printf("Loaded effect shader: %s\n", path);
  1520→    }
  1521→    return shader;
  1522→}
  1523→
  1524→// Destroy an effect shader program
  1525→static void effect_shader_destroy(GLuint shader) {
  1526→    if (shader) {
  1527→        glDeleteProgram(shader);
  1528→    }
  1529→}
... [470 more lines]

Let me finish reading the main function and see the complete picture of what's implemented.

2000→        fprintf(stderr, "ERROR: %s\n", error_message);
  2001→        lua_pop(L, 2);  // error + traceback
  2002→        error_state = true;
  2003→    } else if (lua_pcall(L, 0, 0, err_handler) != LUA_OK) {
  2004→        snprintf(error_message, sizeof(error_message), "%s", lua_tostring(L, -1));
  2005→        fprintf(stderr, "ERROR: %s\n", error_message);
  2006→        lua_pop(L, 2);  // error + traceback
  2007→        error_state = true;
  2008→    } else {
  2009→        lua_pop(L, 1);  // traceback
  2010→    }
  2011→
  2012→    printf("Initialization complete. Press ESC to exit, F11 for fullscreen.\n");
  2013→
  2014→    // Initialize timing state
  2015→    perf_freq = SDL_GetPerformanceFrequency();
  2016→    last_time = SDL_GetPerformanceCounter();
  2017→
  2018→    // Initialize vsync snap frequencies based on display refresh rate
  2019→    {
  2020→        int display_hz = 60;  // Default fallback
  2021→        SDL_DisplayMode mode;
  2022→        if (SDL_GetCurrentDisplayMode(0, &mode) == 0 && mode.refresh_rate > 0) {
  2023→            display_hz = mode.refresh_rate;
  2024→        }
  2025→        printf("Display refresh rate: %dHz\n", display_hz);
  2026→
  2027→        // Compute snap frequencies for this refresh rate and its multiples
  2028→        // (handles 1x, 2x, 3x... of the base frame time for missed frames)
  2029→        double base_frametime = 1.0 / (double)display_hz;
... [23 more lines]

Now I have a complete picture of the current state of the Anchor engine. Here's what's been implemented through Phase 4:

**Completed (Phases 1-4):**

1. **Phase 1: Window + OpenGL + Lua integration**
   - SDL2 window creation
   - OpenGL 3.3 Core Profile context
   - Lua 5.4 state
   - Basic main loop

2. **Phase 2: Web build (Emscripten/WebGL)**
   - WebGL 2.0 support
   - Emscripten main loop integration
   - Platform-specific shader headers

3. **Phase 3: Rendering**
   - Layer system with FBOs
   - Transform stack (push/pop)
   - Command queue for deferred rendering
   - Shapes: rectangles, circles (SDF-based with anti-aliasing option)
   - Sprites/textures (via stb_image)
   - Blend modes (alpha, additive)
   - Batch rendering
   - Effect shaders with ping-pong buffers
   - Manual layer compositing with offsets
   - Deferred uniform setting

4. **Phase 4 (based on git commits):**
   - Appears to be refinements to the above systems
   - Effect shader system
   - Layer draw queue with offsets
   - VSync snap timing

**Not yet implemented (should be Phase 5 and beyond):**

1. **Input system** - Keyboard/gamepad state exposure to Lua
2. **Audio system** - Sound loading/playback (miniaudio or SoLoud mentioned)
3. **Physics** - Box2D 3.1 integration
4. **Object tree** - The core YueScript/Lua object system with operators
5. **Colliders, Springs, Timers** - Engine objects in the tree

Given the documentation mentions the object tree being core to the engine and that we want to actually make games, I'd suggest Phase 5 should focus on one of:


I'll explore potential next steps by consulting the user about their preferred direction for the engine's development. The key candidates for Phase 5 include input handling, establishing the core object framework, or integrating physics capabilities - each critical for creating interactive game experiences.

The user is saying there's an ANCHOR_IMPLEMENTATION_PLAN file that I should have read, which would have given me the answers about what Phase 5 should be. Let me find and read that file first, then update CLAUDE.md to reference it.

E:\a327ex\Anchor\website\files\Opus 4.5\IMPLEMENTATION_PLAN.md
E:\a327ex\Anchor\docs\ANCHOR_IMPLEMENTATION_PLAN.md
E:\a327ex\Anchor\website\context\ANCHOR_IMPLEMENTATION_PLAN.md

Found it. Let me read the implementation plan and then update CLAUDE.md to reference it.

1→# Anchor Implementation Plan
     2→
     3→C engine with YueScript scripting, OpenGL rendering, targeting Windows and Web.
     4→
     5→---
     6→
     7→## Summary of Key Decisions
     8→
     9→| Area | Decision | Rationale |
    10→|------|----------|-----------|
    11→| Renderer | OpenGL | Smooth rotation, additive blending, performance headroom, console-portable |
    12→| Audio | TBD (miniaudio or SoLoud) | Need pitch shifting; SDL_mixer insufficient |
    13→| Physics | Box2D 3.1 | Already used, true ball-to-ball collisions needed |
    14→| Scripting | Lua 5.4 + YueScript | Build-time compilation with `-r` flag for line numbers |
    15→| Timestep | Fixed 120Hz physics, 60Hz render | Decoupled for pixel-perfect visuals with responsive input |
    16→| Resolution | Per-game configurable | 480×270, 640×360, or custom; aspect-ratio scaling with letterboxing |
    17→| C Structure | Single anchor.c | Monolithic file, easier navigation |
    18→| Resources | Live forever | Games are small enough; no unloading needed |
    19→| Linking | Static | No DLLs; SDL2, Lua, audio all compiled in |
    20→| Distribution | Single executable | Zip-append for game content, extractable by modders |
    21→
    22→---
    23→
    24→## Build Strategy
    25→
    26→### YueScript Compilation
    27→
    28→**Build-time compilation** — compile `.yue` → `.lua` during build, not at runtime.
    29→
    30→```
... [854 more lines]

Now I see exactly what Phase 5 should be - Input! The implementation plan is clear:

Phase 5: Input

- Keyboard state (down, pressed this frame, released this frame)
- Mouse state (position, buttons, wheel)
- Binding system with action mapping
- Multiple inputs per action
- Input string parsing
- Runtime rebindable

Let me update CLAUDE.md to reference this implementation plan document.

1→# CLAUDE.md
     2→
     3→Guidelines for Claude Code instances working on Anchor and games built with it.
     4→
     5→---
     6→
     7→## Read First
     8→
     9→Read `docs/ANCHOR.md` before doing anything. It covers:
    10→- The object tree model (tree-based ownership, automatic cleanup)
    11→- How objects, timers, springs, and colliders work
    12→- The action-based vs rules-based spectrum
    13→- Technical implementation details (OpenGL rendering, Box2D physics)
    14→
    15→For speculative API patterns (designed before implementation), see `docs/ANCHOR_API_PATTERNS.md`. These will be revised once the actual API is built.
    16→
    17→For the reasoning behind design decisions — why the engine works the way it does, how to evaluate new features, the developer's working style — see `docs/ANCHOR_CONTEXT_BRIEF.md`.
    18→
    19→---
    20→
    21→## Commands
    22→
    23→### Development
    24→
    25→```bash
    26→cd E:/a327ex/Anchor/engine && ./build.bat    # Build engine (always after C changes)
    27→./scripts/patch-claude-code.sh               # Fix Windows timestamp bug (after CC updates)
    28→```
    29→
    30→### Session End
... [90 more lines]

Now I need to update CLAUDE.md to reference the ANCHOR_IMPLEMENTATION_PLAN.md file in the "Read First" section. Let me add it there.

The file E:\a327ex\Anchor\.claude\CLAUDE.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     3→Guidelines for Claude Code instances working on Anchor and games built with it.
     4→
     5→---
     6→
     7→## Read First
     8→
     9→Read `docs/ANCHOR_IMPLEMENTATION_PLAN.md` first — it has the phased implementation plan with checkboxes showing what's done and what's next.
    10→
    11→Read `docs/ANCHOR.md` for the engine specification. It covers:
    12→- The object tree model (tree-based ownership, automatic cleanup)
    13→- How objects, timers, springs, and colliders work
    14→- The action-based vs rules-based spectrum
    15→- Technical implementation details (OpenGL rendering, Box2D physics)
    16→
    17→For speculative API patterns (designed before implementation), see `docs/ANCHOR_API_PATTERNS.md`. These will be revised once the actual API is built.
    18→
    19→For the reasoning behind design decisions — why the engine works the way it does, how to evaluate new features, the developer's working style — see `docs/ANCHOR_CONTEXT_BRIEF.md`.
    20→
    21→---
    22→
    23→## Commands

Done. CLAUDE.md now points to the implementation plan first. 

Now I know Phase 5 is Input. Let me summarize the plan for the user based on what the implementation plan specifies.

The user wants me to look at the input mixin code in two reference folders to learn from them, and specifically to look for a "sequence" function. Let me find and read those files.

E:\a327ex\Anchor\reference\super emoji box\lun\input.lua
E:\a327ex\Anchor\reference\love-compare\anchor\input.lua

No files found

Found the input files. Let me read both of them.

1→--[[
     2→  This class is responsible for handling input.
     3→  It allows the binding of input from keyboard, mouse and gamepad to actions.
     4→  Actions can then be used in gameplay code in an input device agnostic way.
     5→  For instance:
     6→    lun:input_bind('jump', {'key:x', 'key:space', 'button:a'})
     7→  Binds keyboard keys x and space, as well as gamepad's button a, to the 'jump' action.
     8→  In an update function, you can then call:
     9→    if lun:is_pressed'jump'
    10→  And this will be true frames when any of bound keys or buttons have been pressed.
    11→]]--
    12→input = class:class_new()
    13→function input:input()
    14→  self.tags.input = true
    15→  love.joystick.loadGamepadMappings('lun/assets/gamecontrollerdb.txt')
    16→  self.input_actions = {}
    17→  self.input_state = {}
    18→  self.input_sequence_state = {}
    19→  self.input_keyboard_state = {}
    20→  self.input_previous_keyboard_state = {}
    21→  self.input_mouse_state = {}
    22→  self.input_previous_mouse_state = {}
    23→  self.input_gamepad_state = {}
    24→  self.input_previous_gamepad_state = {}
    25→  self.input_last_type = nil
    26→  self.input_gamepad = love.joystick.getJoysticks()[1]
    27→  self.input_deadzone = 0.5
    28→  return self
    29→end
    30→
... [203 more lines]

1→--[[
     2→  This class is responsible for handling input.
     3→  It allows the binding of input from keyboard, mouse and gamepad to actions.
     4→  Actions can then be used in gameplay code in an input device agnostic way.
     5→  For instance:
     6→    an:input_bind('jump', {'key:x', 'key:space', 'button:a'})
     7→  Binds keyboard keys x and space, as well as gamepad's button a, to the 'jump' action.
     8→  In an update function, you can then call:
     9→    if an:is_pressed'jump'
    10→  And this will be true frames when any of bound keys or buttons have been pressed.
    11→]]--
    12→input = class:class_new()
    13→function input:input()
    14→  self.tags.input = true
    15→  love.joystick.loadGamepadMappings('anchor/assets/gamecontrollerdb.txt')
    16→  self.input_actions = {}
    17→  self.input_state = {}
    18→  self.input_sequence_state = {}
    19→  self.input_keyboard_state = {}
    20→  self.input_previous_keyboard_state = {}
    21→  self.input_mouse_state = {}
    22→  self.input_previous_mouse_state = {}
    23→  self.input_gamepad_state = {}
    24→  self.input_previous_gamepad_state = {}
    25→  self.input_last_type = nil
    26→  self.input_gamepad = love.joystick.getJoysticks()[1]
    27→  self.input_deadzone = 0.5
    28→  return self
    29→end
    30→
... [204 more lines]

Both files are almost identical. I notice there's `self.input_sequence_state = {}` initialized but no "sequence" function visible in either file. Let me search for "sequence" to see if it exists elsewhere or if it's something that was planned but not implemented.

E:\a327ex\Anchor\reference\super emoji box\tools\license.txt:232:      alike.  As a consequence, its main points are that:

E:\a327ex\Anchor\reference\super emoji box\tools\license.txt:826:     11. If, as a consequence of a court judgment or allegation of patent

E:\a327ex\Anchor\reference\super emoji box\tools\license.txt:832:   License and any other pertinent obligations, then as a consequence you

E:\a327ex\Anchor\reference\super emoji box\tools\license.txt:855:   be a consequence of the rest of this License.

E:\a327ex\Anchor\reference\super emoji box\tools\license.txt:1153:    7. If, as a consequence of a court judgment or allegation of patent

E:\a327ex\Anchor\reference\super emoji box\tools\license.txt:1159:  License and any other pertinent obligations, then as a consequence you

E:\a327ex\Anchor\reference\super emoji box\tools\license.txt:1183:  be a consequence of the rest of this License.

E:\a327ex\Anchor\reference\love-compare\anchor\input.lua:18:  self.input_sequence_state = {}

E:\a327ex\Anchor\reference\love-compare\anchor\music_player.lua:26:  self.play_sequence = {}

E:\a327ex\Anchor\reference\love-compare\anchor\music_player.lua:40:    if self.play_index > #self.play_sequence then

E:\a327ex\Anchor\reference\love-compare\anchor\music_player.lua:42:      array.shuffle(self.play_sequence)

E:\a327ex\Anchor\reference\love-compare\anchor\music_player.lua:44:    self.current_song = self.songs[self.play_sequence[self.play_index]]:sound_play(self.play_volume)

E:\a327ex\Anchor\reference\love-compare\anchor\music_player.lua:62:  If play_sequence is passed in, then it will play songs in that sequence before looping again.

E:\a327ex\Anchor\reference\love-compare\anchor\music_player.lua:63:  If play_sequence isn't passed in, then the songs will be played in random order while ensuring no song is repeated before

E:\a327ex\Anchor\reference\love-compare\anchor\music_player.lua:88:function music_player:music_player_play_songs(songs, play_sequence, volume, offsets)

E:\a327ex\Anchor\reference\love-compare\anchor\music_player.lua:89:  self.play_sequence = play_sequence or {}

E:\a327ex\Anchor\reference\love-compare\anchor\music_player.lua:91:  if not play_sequence then

E:\a327ex\Anchor\reference\love-compare\anchor\music_player.lua:92:    for song_name, _ in pairs(self.songs) do table.insert(self.play_sequence, song_name) end

E:\a327ex\Anchor\reference\love-compare\anchor\music_player.lua:93:    array.shuffle(self.play_sequence)

E:\a327ex\Anchor\reference\love-compare\anchor\music_player.lua:96:  self.current_song = self.songs[self.play_sequence[self.play_index]]:sound_play(self.play_volume, nil, (offsets or {})[self.play_index] or 0)

E:\a327ex\Anchor\reference\love-compare\anchor\music_player.lua:100:  Stops playing the current songs and removes any active play sequences.

E:\a327ex\Anchor\reference\love-compare\anchor\music_player.lua:106:  self.play_sequence = {}

E:\a327ex\Anchor\reference\love-compare\anchor\object.lua:242:  An object may have multiple actions attached to it, and they all get called here in the sequence they were attached to the object.

E:\a327ex\Anchor\reference\super emoji box\lun\input.lua:18:  self.input_sequence_state = {}

E:\a327ex\Anchor\reference\super emoji box\lun\object.lua:184:  An object may have multiple actions attached to it, and they all get called here in the sequence they were attached to the object.

E:\a327ex\Anchor\reference\super emoji box\lun\music_player.lua:26:  self.play_sequence = {}

E:\a327ex\Anchor\reference\super emoji box\lun\music_player.lua:40:    if self.play_index > #self.play_sequence then

E:\a327ex\Anchor\reference\super emoji box\lun\music_player.lua:42:      array.shuffle(self.play_sequence)

E:\a327ex\Anchor\reference\super emoji box\lun\music_player.lua:44:    self.current_song = self.songs[self.play_sequence[self.play_index]]:sound_play(self.play_volume)

E:\a327ex\Anchor\reference\super emoji box\lun\music_player.lua:62:  If play_sequence is passed in, then it will play songs in that sequence before looping again.

... [18 more lines]

The `input_sequence_state` variable is initialized but there's no actual `sequence` function in either file. It looks like this was planned functionality that was never implemented. Let me tell the user what I've learned from examining these files.

The user wants me to search for "sequence" in several folders. Let me search for it.

<tool_use_error>Path does not exist: E:\KNUP</tool_use_error>

<tool_use_error>Path does not exist: E:\Works</tool_use_error>

<tool_use_error>Path does not exist: E:\Old Works</tool_use_error>

<tool_use_error>Path does not exist: E:\Aelian</tool_use_error>

The user doesn't want to proceed with this tool use. The tool use was rejected (eg. if it was a file edit, the new_string was NOT written to the file). STOP what you are doing and wait for the user to tell you how to proceed.

The user is saying KNUP is an external drive, not on E:. Let me wait for them to tell me where to search or provide more guidance.

So the path would be D:\KNUP\E\a327ex, D:\KNUP\E\Works, etc. Let me search those.

<tool_use_error>Path does not exist: D:\KNUP\E\a327ex</tool_use_error>

<tool_use_error>Path does not exist: D:\KNUP\E\Works</tool_use_error>

<tool_use_error>Path does not exist: D:\KNUP\E\Old Works</tool_use_error>

<tool_use_error>Path does not exist: D:\KNUP\E\Aelian</tool_use_error>

The paths don't exist. Let me try to list what's in D:\KNUP to see the structure.

Exit code 2
ls: cannot access 'D:/KNUP': No such file or directory

Let me try just listing what's on D: drive

total 256
drwxr-xr-x 1 adn 197121  0 Dec 28 14:23 $RECYCLE.BIN/
drwxr-xr-x 1 adn 197121  0 Jan  1  1980 ./
drwxr-xr-x 1 adn 197121  0 Jan  1  1980 ../
-rw-r--r-- 1 adn 197121 56 Jan  4 07:44 .dropbox.device
drwxr-xr-x 1 adn 197121  0 Jan  4 04:37 a327ex-backup/
drwxr-xr-x 1 adn 197121  0 Dec 28 18:48 C/
drwxr-xr-x 1 adn 197121  0 Jan  4 04:37 claude-backup/
drwxr-xr-x 1 adn 197121  0 Dec 28 14:18 E/
drwxr-xr-x 1 adn 197121  0 Jan  4 04:41 nvim-backup/
drwxr-xr-x 1 adn 197121  0 Apr 20  2024 System Volume Information/
drwxr-xr-x 1 adn 197121  0 Jan  4 04:18 videos/

I see D:/E exists, not D:/KNUP/E. It seems the KNUP drive is mounted as D: directly, and E is a folder inside it.

Found 1 file
D:\E\a327ex\Anchor-dashed-lines\anchor\input.lua

No files found

Found 5 files
D:\E\Works\Antitower\lun\input.lua
D:\E\Works\Bird\lun\input.lua
D:\E\Works\Glideboy\lun\input.lua
D:\E\Works\SNKRX Base\lun\input.lua
D:\E\Works\Stack\lun\input.lua

Found 10 files
D:\E\Aelian\JUGGLRX-daskfdjd\anchor\input.lua
D:\E\Aelian\sdl3-sample\SDL\wayland-protocols\text-input-unstable-v3.xml
D:\E\Aelian\JUGGLRX-CF-2\anchor\input.lua
D:\E\Aelian\JUGGLRX-CF\anchor\input.lua
D:\E\Aelian\Aelian-1\lun\input.lua
D:\E\Aelian\geeedorah-1\lun\input.lua
D:\E\Aelian\JUGGLRX Old\anchor\input.lua
D:\E\Aelian\Metaballs\lun\input.lua
D:\E\Aelian\Shear\lun\input.lua
D:\E\Aelian\Tint\CF_Lua\build_msvc_2022\_deps\sdl2-src\wayland-protocols\text-input-unstable-v3.xml

Found several input files with "sequence" in them. Let me read a few to find the actual sequence function implementation.

No matches found

No matches found

No function definition with "sequence" in the name. Let me look more broadly at the actual sequence-related code in one of these files.

13-function input:input()

14-  self.tags.input = true

15-  love.joystick.loadGamepadMappings('lun/assets/gamecontrollerdb.txt')

16-  self.input_actions = {}

17-  self.input_state = {}

18:  self.input_sequence_state = {}

19-  self.input_keyboard_state = {}

20-  self.input_previous_keyboard_state = {}

21-  self.input_mouse_state = {}

22-  self.input_previous_mouse_state = {}

23-  self.input_gamepad_state = {}

12-input = class:class_new()

13-function input:input()

14-  self.tags.input = true

15-  self.input_actions = {}

16-  self.input_state = {}

17:  self.input_sequence_state = {}

18-  self.input_last_type = nil

19-  self.input_gamepad_state = {}

20-  self.input_previous_gamepad_state = {}

21-  self.input_gamepad = nil -- joypad_open and joypad_is_connected currently don't seem to be working or I'm using it wrong, wait for Randy's answer

22-  self.input_deadzone = 0.5

These also just have the `input_sequence_state` initialization but no actual sequence function. Let me read the full Anchor-dashed-lines input file to see if it has the implementation.

1→--[[
     2→  This class is responsible for handling input.
     3→  It allows the binding of input from keyboard, mouse and gamepad to actions.
     4→  Actions can then be used in gameplay code in an input device agnostic way.
     5→  For instance:
     6→    an:input_bind('jump', {'key:x', 'key:space', 'button:a'})
     7→  Binds keyboard keys x and space, as well as gamepad's button a, to the 'jump' action.
     8→  In an update function, you can then call:
     9→    if an:is_pressed'jump'
    10→  And this will be true frames when any of bound keys or buttons have been pressed.
    11→]]--
    12→input = class:class_new()
    13→function input:input()
    14→  self.tags.input = true
    15→  love.joystick.loadGamepadMappings('anchor/assets/gamecontrollerdb.txt')
    16→  self.input_actions = {}
    17→  self.input_state = {}
    18→  self.input_sequence_state = {}
    19→  self.input_keyboard_state = {}
    20→  self.input_previous_keyboard_state = {}
    21→  self.input_mouse_state = {}
    22→  self.input_previous_mouse_state = {}
    23→  self.input_gamepad_state = {}
    24→  self.input_previous_gamepad_state = {}
    25→  self.input_last_type = nil
    26→  self.input_gamepad = love.joystick.getJoysticks()[1]
    27→  self.input_deadzone = 0.5
    28→  return self
    29→end
    30→
... [213 more lines]

Still the same - `input_sequence_state` initialized but no sequence function. Let me try a broader search for "input_sequence" across all files to see if there's a function definition somewhere else.

No matches found

[Showing results with pagination = limit: 50, offset: 0]

No input_sequence matches. Let me try searching for just "sequence" in all lua files to find the actual implementation.

D:\E\a327ex\Chain-Reaction\anchor\music_player.lua:88:function music_player:music_player_play_songs(songs, play_sequence, volume, offsets)

D:\E\a327ex\be-me\anchor\music_player.lua:88:function music_player:music_player_play_songs(songs, play_sequence, volume, offsets)

D:\E\a327ex\Tidal-Waver\anchor\music_player.lua:88:function music_player:music_player_play_songs(songs, play_sequence, volume, offsets)

D:\E\a327ex\B\anchor\music_player.lua:88:function music_player:music_player_play_songs(songs, play_sequence, volume, offsets)

D:\E\a327ex\Anchor-dashed-lines\anchor\music_player.lua:88:function music_player:music_player_play_songs(songs, play_sequence, volume, offsets)

D:\E\a327ex\Aurelian\anchor\music_player.lua:88:function music_player:music_player_play_songs(songs, play_sequence, volume, offsets)

D:\E\Castle\002 - SYMBLDL [dead]\miu\sound.lua:73:function object:music_player_play_songs(songs, play_sequence, volume)

D:\E\Castle\002 - SYMBLDL [dead]\miu\input.lua:145:function object:is_sequence_pressed(...)

D:\E\Castle\002 - SYMBLDL [dead]\miu\input.lua:153:function object:is_sequence_released(...)

D:\E\Castle\002 - SYMBLDL [dead]\miu\input.lua:159:function object:is_sequence_down(...)

D:\E\Castle\002 - SYMBLDL [dead]\miu\input.lua:165:function object:process_sequence(action_state, ...)

D:\E\a327ex\Homonumbers\anchor\music_player.lua:88:function music_player:music_player_play_songs(songs, play_sequence, volume, offsets)

D:\E\a327ex\Bulletball\anchor\music_player.lua:88:function music_player:music_player_play_songs(songs, play_sequence, volume, offsets)

D:\E\a327ex\super-emoji-bounce\anchor\music_player.lua:88:function music_player:music_player_play_songs(songs, play_sequence, volume, offsets)

D:\E\Works\Stack\lun\music_player.lua:88:function music_player:music_player_play_songs(songs, play_sequence, volume, offsets)

D:\E\a327ex\Music-Theory\Code\Chordbank\anchor\music_player.lua:88:function music_player:music_player_play_songs(songs, play_sequence, volume, offsets)

D:\E\a327ex\Antitower\anchor\music_player.lua:88:function music_player:music_player_play_songs(songs, play_sequence, volume, offsets)

D:\E\Castle\001 - Rekoyam Tsohg [dead]\nil\sound.lua:73:function object:music_player_play_songs(songs, play_sequence, volume)

D:\E\Castle\001 - Rekoyam Tsohg [dead]\nil\input.lua:145:function object:is_sequence_pressed(...)

D:\E\Castle\001 - Rekoyam Tsohg [dead]\nil\input.lua:153:function object:is_sequence_released(...)

D:\E\Castle\001 - Rekoyam Tsohg [dead]\nil\input.lua:159:function object:is_sequence_down(...)

D:\E\Castle\001 - Rekoyam Tsohg [dead]\nil\input.lua:165:function object:process_sequence(action_state, ...)

D:\E\a327ex\Default\anchor\music_player.lua:88:function music_player:music_player_play_songs(songs, play_sequence, volume, offsets)

D:\E\a327ex\Creative-Coding\003\anchor\music_player.lua:88:function music_player:music_player_play_songs(songs, play_sequence, volume, offsets)

D:\E\a327ex\Creative-Coding\006\anchor\music_player.lua:88:function music_player:music_player_play_songs(songs, play_sequence, volume, offsets)

D:\E\a327ex\Slipways-like\anchor\music_player.lua:88:function music_player:music_player_play_songs(songs, play_sequence, volume, offsets)


[Showing results with pagination = limit: 30, offset: 0]

Found it! There's a `is_sequence_pressed`, `is_sequence_released`, `is_sequence_down`, and `process_sequence` in Castle's input files. Let me read that file.

1→function object:input()
     2→  self.tags.input = true
     3→  love.joystick.loadGamepadMappings('lib/gamecontrollerdb.txt')
     4→  self.input_actions = {}
     5→  self.input_state = {}
     6→  self.input_sequence_state = {}
     7→  self.input_keyboard_state = {}
     8→  self.input_previous_keyboard_state = {}
     9→  self.input_mouse_state = {}
    10→  self.input_previous_mouse_state = {}
    11→  self.input_gamepad_state = {}
    12→  self.input_previous_gamepad_state = {}
    13→  self.input_last_type = nil
    14→  self.input_gamepad = love.joystick.getJoysticks()[1]
    15→  self.input_deadzone = 0.5
    16→  self:input_bind_all()
    17→  return self
    18→end
    19→
    20→function object:input_bind(action, controls)
    21→  if not self.input_state[action] then self.input_state[action] = {} end
    22→  if not self.input_state[action].controls then self.input_state[action].controls = {} end
    23→  for _, control in ipairs(controls) do
    24→    local action_type, key = control:left(':'), control:right(':')
    25→    local sign = nil
    26→    if action_type == 'axis' then
    27→      if key:find('%+') then key, sign = key:left('%+'), 1
    28→      elseif key:find('%-') then key, sign = key:left('%-'), -1 end
    29→    end
    30→    table.insert(self.input_state[action].controls, {action_type, key, sign})
... [197 more lines]

Found it. Now I can explain what the sequence function does.

The user wants to keep as much input logic as possible in C rather than building it in YueScript. Let me think about what that means:

From the input files I read, the main components are:

1. **Raw state tracking** (definitely C):
   - Keyboard state (current frame)
   - Previous keyboard state (last frame)
   - Mouse state (buttons, position, wheel, delta)
   - Previous mouse state
   - Gamepad state (buttons, axes)
   - Previous gamepad state

2. **Action binding** (could be C):
   - Map action names to lists of controls
   - Parse control strings like `'key:space'`, `'mouse:1'`, `'axis:leftx+'`
   - Store multiple controls per action

3. **Action state computation** (could be C):
   - For each action, compute `pressed`, `down`, `released` based on its bound controls
   - Handle the OR logic (any bound control triggers the action)
   - Handle axis deadzone and sign (+/-)

4. **Query functions** (C):
   - `is_pressed(action)` → bool
   - `is_down(action)` → bool/value
   - `is_released(action)` → bool
   - `mouse_position()` → x, y
   - `mouse_delta()` → dx, dy

5. **Sequence detection** (could be C):
   - Track sequence state per unique sequence
   - Time-based progression through sequence steps
   - `is_sequence_pressed/down/released(...)` 

6. **Utility functions** (C):
   - `input_bind(action, controls)` 
   - `input_unbind(action, control)`
   - `input_unbind_all(action)`
   - `input_bind_all()` — binds every key to an action of the same name

All of this can reasonably live in C. The main complexity is:


- Parsing control specifications efficiently
- Managing dynamic control mappings
- Handling different input types seamlessly

I'll need to design robust data structures that can handle various input types and provide flexible binding mechanisms. The goal is to create a lightweight, performant input system that can be easily extended and configured.

The core approach involves creating flexible structs for actions and controls, with compact storage and clear state tracking. This allows mapping multiple input sources to a single logical action while maintaining clean, efficient state management.

The input system supports diverse input types - keyboard, mouse, and gamepad - with parallel tracking of current and previous states. This enables robust input detection like press, hold, and release events across different hardware interfaces.

Sequence tracking presents implementation challenges, requiring sophisticated key generation and state management strategies. Potential approaches include pre-registration, hash map tracking, or constraining sequence complexity to ensure performant, reliable input handling.

I see two primary design paths: a named sequence registration model with explicit binding, or a more dynamic variadic sequence generation mechanism that could introduce additional complexity in C's type system.

Let me think through all the functions we'd need to expose to Lua for a complete input system in C.

**Binding/Configuration:**

- `input_bind(action, controls_table)` — bind action to controls
- `input_unbind(action, control)` — remove single control from action
- `input_unbind_all(action)` — remove all controls from action
- `input_bind_all()` — bind every key/button to same-named action
- `input_bind_sequence(name, sequence_table)` — register a sequence
- `input_set_deadzone(value)` — set axis deadzone

**Action queries:**

- `is_pressed(action)` — just pressed this frame
- `is_down(action)` — currently held (returns value for axes)
- `is_released(action)` — just released this frame

**Sequence queries:**

- `is_sequence_pressed(name)` — sequence completed, final action pressed this frame
- `is_sequence_down(name)` — sequence completed, final action held
- `is_sequence_released(name)` — sequence completed, final action released this frame

**Mouse:**

- `mouse_position()` — returns x, y in game coordinates
- `mouse_delta()` — returns dx, dy movement this frame
- `mouse_set_visible(bool)` — show/hide cursor
- `mouse_set_grabbed(bool)` — lock cursor to window

**Gamepad:**

- `gamepad_is_connected()` — check if gamepad available
- `gamepad_get_axis(axis)` — raw axis value (for things like camera control that want analog, not action-mapped)

**Raw queries (optional but useful):**

- `key_is_down(key)` — raw key check without action binding
- `key_is_pressed(key)` — raw key pressed this frame
- `key_is_released(key)` — raw key released this frame


- `input_update()` and `input_post_update()` are internal engine functions for processing input state, not exposed to Lua developers.

The control string format would support various input types with clear, consistent naming conventions. This includes keyboard keys using SDL names, mouse buttons and wheel actions, and likely gamepad buttons and axes.

Specific input types cover keyboard, mouse interactions, and gamepad controls with precise directional and button identifiers.

The user wants me to do thorough research on input systems across many game engines/frameworks. This is a substantial research task. Let me search for information about each of these engines' input systems.

I should look at:

1. HaxeFlixel
2. Heaps
3. Defold
4. Unity
5. Godot
6. Ceramic (Haxe)
7. GDevelop
8. Construct 3
9. p5play
10. GameMaker
11. Bevy
12. PixiJS
13. FNA
14. Phaser
15. Cute Framework
16. LÖVR
17. KaboomJS

Let me search for documentation on each of these. I'll need to be thorough and look at actual API documentation.

Web search results for query: "Unity Input System new InputAction binding documentation 2025"

Links: [{"title":"Input Bindings | Input System | 1.0.2","url":"https://docs.unity3d.com/Packages/[email protected]/manual/ActionBindings.html"},{"title":"Input Bindings | Input System | 1.4.4","url":"https://docs.unity3d.com/Packages/[email protected]/manual/ActionBindings.html"},{"title":"Actions | Input System | 1.0.2","url":"https://docs.unity3d.com/Packages/[email protected]/manual/Actions.html"},{"title":"InputSystem/Packages/com.unity.inputsystem/Documentation~/ActionBindings.md at develop · Unity-Technologies/InputSystem","url":"https://github.com/Unity-Technologies/InputSystem/blob/develop/Packages/com.unity.inputsystem/Documentation~/ActionBindings.md"},{"title":"Unity's New Input System (+ How To Use It!) | Zero To Mastery","url":"https://zerotomastery.io/blog/unity-new-input-system/"},{"title":"Unity's new Input System, made easy (complete beginner's guide) - Game Dev Beginner","url":"https://gamedevbeginner.com/input-in-unity-made-easy-complete-guide-to-the-new-system/"},{"title":"(New Input System) Getting Specific Binding in Action - Unity Engine - Unity Discussions","url":"https://discussions.unity.com/t/new-input-system-getting-specific-binding-in-action/865086"},{"title":"InputSystem/Packages/com.unity.inputsystem/CHANGELOG.md at develop · Unity-Technologies/InputSystem","url":"https://github.com/Unity-Technologies/InputSystem/blob/develop/Packages/com.unity.inputsystem/CHANGELOG.md"},{"title":"Input Bindings | Input System | 1.5.1","url":"https://docs.unity3d.com/Packages/[email protected]/manual/ActionBindings.html"},{"title":"InputSystem/Packages/com.unity.inputsystem/Documentation~/Actions.md at develop · Unity-Technologies/InputSystem","url":"https://github.com/Unity-Technologies/InputSystem/blob/develop/Packages/com.unity.inputsystem/Documentation~/Actions.md"}]

Here are the search results for Unity Input System InputAction binding documentation:

## Official Unity Documentation

To query the Bindings to a particular Action, you can use `InputAction.bindings`. To query a flat list of Bindings for all Actions in an Action Map, you can use `InputActionMap.bindings`.

### Key Binding Concepts:

**Querying Bindings:**
You can retrieve the bindings of an action using its `InputAction.bindings` property which returns a read-only array of `InputBinding` structs. For example: `var fireBindings = playerInput.actions["fire"].bindings;`

**Composite Bindings:**
Sometimes, you might want to have several Controls act in unison to mimic a different type of Control. The most common example of this is using the W, A, S, and D keys on the keyboard to form a 2D vector Control equivalent to mouse deltas or gamepad sticks. Another example is to use two keys to form a 1D axis equivalent to a mouse scroll axis.(no content)You can bind a ButtonControl to an action expecting a Vector2, but doing so results in an exception at runtime. Composite Bindings (that is, Bindings that are made up of other Bindings) solve this problem.

**Binding Groups:**
A Binding can belong to any number of Binding groups. Unity stores these on the InputBinding class as a semicolon-separated string in the `InputBinding.groups` property, and you can use them for any arbitrary grouping of bindings.

### Setting Up Bindings:

To associate an action with one or more device controls, you set up input bindings in the Input Actions Editor. Then you can refer to those actions in your code, instead of the specific devices.(no content)The input bindings define which device's controls are used to perform the action. For example, the "Move" action's bindings can be set to the left gamepad stick and the keyboard's arrow keys.

### Key Documentation Links:

- **Official Docs (v1.5.1):** https://docs.unity3d.com/Packages/[email protected]/manual/ActionBindings.html
- **GitHub Source Documentation:** https://github.com/Unity-Technologies/InputSystem/blob/develop/Packages/com.unity.inputsystem/Documentation~/ActionBindings.md
- **Actions Overview:** https://github.com/Unity-Technologies/InputSystem/blob/develop/Packages/com.unity.inputsystem/Documentation~/Actions.md

... [5 more lines]

Web search results for query: "HaxeFlixel input system API keyboard mouse gamepad documentation 2025"

Links: [{"title":"Keyboard | HaxeFlixel - 2D Game Engine","url":"https://haxeflixel.com/documentation/keyboard/"},{"title":"Gamepads | HaxeFlixel - 2D Game Engine","url":"https://haxeflixel.com/documentation/gamepads/"},{"title":"flixel.input.gamepad.FlxGamepad - HaxeFlixel API","url":"https://api.haxeflixel.com/flixel/input/gamepad/FlxGamepad.html"},{"title":"flixel.input.keyboard.FlxKeyboard - HaxeFlixel API","url":"https://api.haxeflixel.com/flixel/input/keyboard/FlxKeyboard.html"},{"title":"flixel.input.keyboard - HaxeFlixel API","url":"https://api.haxeflixel.com/flixel/input/keyboard/"},{"title":"HaxeFlixel Conditionals | HaxeFlixel - 2D Game Engine","url":"https://haxeflixel.com/documentation/haxeflixel-conditionals/"},{"title":"Mouse | HaxeFlixel - 2D Game Engine","url":"https://haxeflixel.com/documentation/mouse/"},{"title":"flixel.input.actions.FlxActionDigital - HaxeFlixel API","url":"https://api.haxeflixel.com/flixel/input/actions/FlxActionDigital.html"},{"title":"Actions | HaxeFlixel - 2D Game Engine","url":"https://haxeflixel.com/documentation/actions/"},{"title":"flixel.input.actions.FlxActionInput - HaxeFlixel API","url":"https://api.haxeflixel.com/flixel/input/actions/FlxActionInput.html"}]

Here are the search results for HaxeFlixel's input system API documentation:

## Keyboard Input
Keyboard input for HaxeFlixel is provided through the FlxKeyboard class and is available through FlxG.keys. An object of type FlxKeyList contains a Bool for each key on the keyboard.(no content)It keeps track of what keys are pressed and how with handy Bools or strings, normally accessed via FlxG.keys. Example: `FlxG.keys.justPressed.A`

## Mouse Input
Mouse input for HaxeFlixel is provided through the FlxMouse class and is available through FlxG.mouse. It is worth noting that it extends FlxPoint. On non-mobile targets, the mouse starts out by being visible by default. You can set the visibility via FlxG.mouse.visible.

## Gamepad Input
Gamepad input for HaxeFlixel is provided through the FlxGamepad class and is available through FlxG.gamepads and the InputFrontEnd. Since gamepads have a variety of manufacturers their keycodes provided to HaxeFlixel API differ from model to model.(no content)You can check `gamepad.pressed.A` for whether the bottom face button is pressed. On a PS4 controller this would be the "X" button, on an XBox 360 or XBox One controller this would be the "A" button.

## Actions System (Unified Input)
FlxActions let you attach multiple inputs to a single in-game action, so "jump" could be performed by a keyboard press, a mouse click, or a gamepad button press.(no content)A FlxActionInput represents a specific input event on a specific input device, like "when the A button on gamepad #1 is JUST_PRESSED", which you can use to trigger a FlxAction. These come in digital and analog forms for every device that Flixel supports.(no content)Input codes include FlxMouseButtonID, FlxKey, FlxGamepadInputID, or Steam Controller action handle. States that trigger actions include PRESSED, JUST_PRESSED, RELEASED, JUST_RELEASED.

## Conditional Compilation
For web or desktop targets, you typically want mouse and keyboard controls. For mobile targets, you want touch input. Gamepad controls can be made available on non-web targets using conditional defines.

### Key Documentation Links:

- **Keyboard**: https://haxeflixel.com/documentation/keyboard/
- **Mouse**: https://haxeflixel.com/documentation/mouse/
- **Gamepads**: https://haxeflixel.com/documentation/gamepads/
- **Actions**: https://haxeflixel.com/documentation/actions/
- **API Reference**: https://api.haxeflixel.com/flixel/input/


REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

Web search results for query: "Defold game engine input system documentation action binding"

Links: [{"title":"Device input in Defold","url":"https://defold.com/manuals/input/"},{"title":"doc/docs/en/manuals/input.md at master · defold/doc","url":"https://github.com/defold/doc/blob/master/docs/en/manuals/input.md"},{"title":"Key and text input in Defold","url":"https://defold.com/manuals/input-key-and-text/"},{"title":"Mouse and touch input in Defold","url":"https://defold.com/manuals/input-mouse-and-touch/"},{"title":"defold/engine/docs/INPUT_SYSTEM.md at dev · defold/defold","url":"https://github.com/defold/defold/blob/dev/engine/docs/INPUT_SYSTEM.md"},{"title":"Gamepad input in Defold","url":"https://defold.com/manuals/input-gamepads/"},{"title":"Defold Engine Tutorial Series: Input, Scripting And Messaging – GameFromScratch.com","url":"https://gamefromscratch.com/defold-engine-tutorial-series-input-scripting-and-messaging/"},{"title":"Handling Input in Defold - DevGa.me","url":"https://devga.me/tutorials/defold-crash-course-tutorial/handling-input-in-defold/"},{"title":"Runtime binding of inputs to actions (closed) - Feature requests - Defold game engine forum","url":"https://forum.defold.com/t/runtime-binding-of-inputs-to-actions-closed/65320"},{"title":"Mapper | defold-input","url":"https://britzl.github.io/defold-input/in/mapper.html"}]

Here are the search results for Defold game engine input system documentation:

## Official Documentation

The input bindings is a project wide table that allows you to specify how device input should translate into named actions before they are dispatched to your script components and GUI scripts.

### How Input Works
All user input is captured by the engine and dispatched as actions to script- and GUI script components in game objects that have acquired input focus and that implement the on_input() function.(no content)Actions are identified by the (hashed) names that you list in the input bindings file. Each action also contain relevant data about the input: if a button is pressed or released, the coordinates of the mouse and touch etc.

### Creating Input Bindings
A default input binding file is automatically created with all new project templates so there is usually no need to create a new binding file. The default file is called "game.input_binding" and can be found in the "input" folder in the project root.(no content)The same action name can be assigned to multiple inputs. For instance, you can bind the Space key and the gamepad "A" button to the action jump.

### Trigger Types
The documentation describes five device-specific types of triggers:

- **Key Triggers**: Single key keyboard input. Each key is mapped separately into a corresponding action.
- **Text Triggers**: Used to read arbitrary text input.
- **Mouse Triggers**: Input from mouse buttons and scroll wheels.
- **Touch Triggers**: Single-touch and Multi-touch type triggers are available on iOS and Android devices in native applications and in HTML5 bundles.
- **Gamepad Triggers**: Gamepad triggers allow you to bind standard gamepad input to game functions.

### Acquiring Input Focus
To listen to input actions, use `msg.post(".", "acquire_input_focus")`. This message instructs the engine to add input capable components (script components, GUI components and collection proxies) in the game objects to the input stack.

### Runtime Key Rebinding
The Mapper module can be used to map action ids to in-game actions. This makes it very easy to allow the user to rebind keys or gamepad button or to assign different sets of input for the same actions in a multiplayer game.

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Web search results for query: "Heaps.io hxd input keyboard mouse gamepad API documentation"

Links: [{"title":"hxd.Key - Heaps.io Game Engine","url":"https://heaps.io/api/hxd/Key.html"},{"title":"Events and interaction - Heaps.io Game Engine","url":"https://heaps.io/documentation/h2d-events-and-interactivity.html"},{"title":"Pad - Heaps.io Game Engine","url":"https://heaps.io/samples/pad.html"},{"title":"Input - Heaps.io Game Engine","url":"https://heaps.io/samples/input.html"},{"title":"h2d.Interactive - Heaps.io Game Engine","url":"https://heaps.io/api/h2d/Interactive.html"},{"title":"Deepnight Games | Part 2 – Using GameBase to create an Haxe+Heaps game","url":"https://deepnight.net/tutorial/using-my-gamebase-to-create-a-heaps-game/"},{"title":"Heaps - Haxe Game Engine - Heaps.io Game Engine","url":"https://heaps.io/index.html"},{"title":"hxd.Pad - Heaps.io Game Engine","url":"https://heaps.io/api/hxd/Pad.html"},{"title":"hxd.impl.MouseMode - Heaps.io Game Engine","url":"https://heaps.io/api/hxd/impl/MouseMode.html"},{"title":"heaps.io/assets/content/samples/samples.json at master · HeapsIO/heaps.io","url":"https://github.com/HeapsIO/heaps.io/blob/master/assets/content/samples/samples.json"}]

Here's what I found about the Heaps.io (hxd) input API documentation for keyboard, mouse, and gamepad:

## Heaps.io Input API Overview

The Heaps.io API includes the `hxd` package which contains cross-platform classes and a complete resource loading and management framework. This includes mouse, keyboard and gamepad support.

### Keyboard Input (`hxd.Key`)

Keyboard events can be captured using the global event. Check if the `event.kind` is `EKeyDown` or `EKeyUp`. You can also use the static functions `hxd.Key.isPressed`, `hxd.Key.isDown` and `hxd.Key.isReleased`.(no content)Mouse wheel does not have an off signal, and should be checked only through the `isPressed` method. Note that there may be multiple wheel scrolls between 2 frames, so it is recommended to directly listen to wheel events which also provide OS-generated wheel delta value.

### Mouse Input (`h2d.Interactive`)

Making objects interactive (with the mouse) is done by creating a `h2d.Interactive` instance. You provide it with an interaction area and attach it to a sprite. This can be used to implement buttons for the UI, but also for any other object that responds to being clicked or hovered over.

Key Interactive events include:

- **onOver**: Sent when mouse enters Interactive hitbox area.
- **onOut**: Sent when mouse exits Interactive hitbox area.
- **onPush**: Sent when Interactive is pressed by the user.
- **onClick**: Sent when the Interactive is clicked by the user. Can be prevented by calling `Interactive.preventClick` during or after `Interactive.onPush` event.(no content)By default, Interactive only reacts to primary (left) mouse button for actions.(no content)When enabled, `enableRightButton` allows interacting with secondary mouse buttons (right button/wheel) to cause onPush, onClick, onRelease and onReleaseOutside callbacks.

### Mouse Mode (`hxd.impl.MouseMode`)

The mouse movement input handling mode includes "Absolute" - the default mouse movement mode that causes EMove events in window coordinates.(no content)Relative mouse movement mode hides the mouse cursor and invokes callbacks with relative mouse movement instead of EMove events. During Relative mouse mode the window mouse position is not updated.

### Gamepad Input (`hxd.Pad`)

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Good start. Let me continue searching for more engines.

Web search results for query: "Godot 4 Input class InputMap action system documentation"

Links: [{"title":"InputMap — Godot Engine (stable) documentation in English","url":"https://docs.godotengine.org/en/stable/classes/class_inputmap.html"},{"title":"InputMap — Godot Engine (4.3) documentation in English","url":"https://docs.godotengine.org/en/4.3/classes/class_inputmap.html"},{"title":"InputMap — Godot Engine (4.4) documentation in English","url":"https://docs.godotengine.org/en/4.4/classes/class_inputmap.html"},{"title":"godot-docs/classes/class_inputmap.rst at master · godotengine/godot-docs","url":"https://github.com/godotengine/godot-docs/blob/master/classes/class_inputmap.rst"},{"title":"InputMap — Godot Engine (4.x) documentation in English","url":"https://docs.godotengine.org/cs/4.x/classes/class_inputmap.html"},{"title":"Input — Godot Engine (stable) documentation in English","url":"https://docs.godotengine.org/en/stable/classes/class_input.html"},{"title":"InputMap — Godot Engine (latest) documentation in English","url":"https://docs.godotengine.org/en/latest/classes/class_inputmap.html"},{"title":"InputMap | Godot Docs 4.3 | ROKOJORI Labs","url":"https://rokojori.com/en/labs/godot/docs/4.3/inputmap-class"},{"title":"InputMap — Godot Engine latest documentation","url":"https://docs.huihoo.com/godotengine/godot-docs/godot/classes/class_inputmap.html"},{"title":"Input examples — Godot Engine (stable) documentation in English","url":"https://docs.godotengine.org/en/stable/tutorials/inputs/input_examples.html"}]

Here are the search results for Godot 4 Input class and InputMap action system documentation:

## Official Documentation

### InputMap Class
**InputMap** inherits from Object and is a singleton that manages all `InputEventAction`s. It can be created/modified from the project settings menu Project > Project Settings.(no content)InputEventActions can be created/modified from the project settings menu Project > Project Settings > Input Map or in code with `add_action` and `action_add_event`.

### Key InputMap Methods:

- `add_action(action, deadzone=0.5)` - Adds an empty action to the InputMap with a configurable deadzone.
- An InputEvent can then be added to this action with `action_add_event`.
- `erase_action` - Removes an action from the InputMap.
- `event_is_action(event, action, exact_match=false)` - Returns true if the given event is part of an existing action.
- `get_actions` - Returns an array of all actions in the InputMap.
- `has_action` - Returns true if the InputMap has a registered action with the given name.
- `load_from_project_settings` - Clears all InputEventAction in the InputMap and loads it anew from ProjectSettings.

### Input Class
**Input** inherits from Object and is a singleton for handling inputs. The Input singleton handles key presses, mouse buttons and movement, gamepads, and input actions.

### Tutorials
Godot also provides an **Input examples** tutorial that teaches how to use Godot's InputEvent system to capture player input.

## Useful Links:

- **InputMap (stable)**: https://docs.godotengine.org/en/stable/classes/class_inputmap.html
- **InputMap (4.3)**: https://docs.godotengine.org/en/4.3/classes/class_inputmap.html
- **InputMap (4.4)**: https://docs.godotengine.org/en/4.4/classes/class_inputmap.html
... [5 more lines]

Web search results for query: "Ceramic engine Haxe input keyboard mouse gamepad API"

Links: [{"title":"Running a whole 2D Game Engine in Unity - Ceramic","url":"https://ceramic-engine.com/blog/ceramic-in-unity/"},{"title":"Gamepads | HaxeFlixel - 2D Game Engine","url":"https://haxeflixel.com/documentation/gamepads/"},{"title":"Keyboard | HaxeFlixel - 2D Game Engine","url":"https://haxeflixel.com/documentation/keyboard/"},{"title":"Handling Input - DevGa.me","url":"https://devga.me/tutorials/armory3d/handling-input/"},{"title":"control (0.5.1)","url":"https://lib.haxe.org/p/control"},{"title":"Input - Ceramic","url":"https://ceramic-engine.com/api-docs/clay-native/ceramic/Input/"},{"title":"flixel.input.gamepad.FlxGamepad - HaxeFlixel API","url":"https://api.haxeflixel.com/flixel/input/gamepad/FlxGamepad.html"},{"title":"Actions | HaxeFlixel - 2D Game Engine","url":"https://haxeflixel.com/documentation/actions/"},{"title":"flixel-abstractinput (1.0.3)","url":"https://lib.haxe.org/p/flixel-abstractinput/"},{"title":"HaxeFlixel Conditionals | HaxeFlixel - 2D Game Engine","url":"https://haxeflixel.com/documentation/haxeflixel-conditionals/"}]

Based on the search results, here's what I found about the **Ceramic engine's input API** for Haxe:

## Ceramic Engine Input API

The Ceramic engine manages all input handling for keyboard and gamepad devices.

### Keyboard Input

- Checks if a key is currently pressed (held down).
- Triggered when a key from the keyboard is being pressed. This event fires repeatedly while a key is held down.
- Triggered when a key from the keyboard is being released.

### Gamepad Input

- List of currently connected gamepad IDs. Updated automatically when gamepads are connected or disconnected.
- Gets the name/description of a connected gamepad.
- Triggered when a gamepad analog axis value changes (`emitGamepadAxis`).
- Triggered when a gamepad button is pressed (`emitGamepadDown`).
- Triggered when a gamepad button is released (`emitGamepadUp`).
- Triggered when gamepad gyroscope data is received (`emitGamepadGyro`).
- Triggered when a gamepad is connected and enabled (`emitGamepadEnable`).

### Unity Backend
Input was a bit tricky but still easier than graphics. Ceramic uses the more recent InputSystem module provided by Unity. It provides input data consistent with other backends, with support of gamepads, screens with multiple finger touch, mouse and keyboard input.

The official Ceramic API documentation is available at: https://ceramic-engine.com/api-docs/clay-native/ceramic/Input/


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Web search results for query: "Construct 3 keyboard mouse touch gamepad input conditions documentation"

Links: [{"title":"Gamepad - Construct 3 Documentation","url":"https://www.construct.net/en/make-games/manuals/construct-3/plugin-reference/gamepad"},{"title":"Customised Input Template - Gamepad, Keyboard and Mouse Support (for Construct 2 & Construct 3) - Release Announcements - itch.io","url":"https://itch.io/t/2159744/customised-input-template-gamepad-keyboard-and-mouse-support-for-construct-2-construct-3"},{"title":"Custom Controls for Construct 3 by Relixes","url":"https://relixes.itch.io/custom-controls-for-construct-3"},{"title":"Touch - Construct 3 Documentation","url":"https://www.construct.net/en/make-games/manuals/construct-3/plugin-reference/touch"},{"title":"Mouse - Construct 3 Documentation","url":"https://www.construct.net/en/make-games/manuals/construct-3/plugin-reference/mouse"},{"title":"Keyboard - Construct 3 Documentation","url":"https://www.construct.net/en/make-games/manuals/construct-3/plugin-reference/keyboard"},{"title":"Touch controls & detecting input method - Free Tutorial","url":"https://www.construct.net/en/tutorials/touch-controls-detecting-13"},{"title":"Problem with utilising both mouse and touch controls","url":"https://www.construct.net/en/forum/construct-3/how-do-i-8/problem-utilising-mouse-touch-146827"},{"title":"How do I know what gamepad input is being triggered?","url":"https://www.construct.net/en/forum/construct-3/how-do-i-8/know-gamepad-input-triggered-165869"},{"title":"How do I detect input device and mouse movement?","url":"https://www.construct.net/en/forum/construct-2/how-do-i-18/detect-input-device-mouse-141415"}]

Here are the official Construct 3 documentation pages and resources for input conditions:

## Official Construct 3 Documentation

### Keyboard
The Keyboard object allows projects to respond to keyboard input.(no content)When using Javascript or TypeScript coding, the features of this object can be accessed via the scripting interface.

- **Documentation:** https://www.construct.net/en/make-games/manuals/construct-3/plugin-reference/keyboard

### Mouse
The Mouse object allows projects to respond to mouse input.(no content)When designing your project, you can't assume everyone has a mouse. Many users browse the web with touchscreen devices.

- **Documentation:** https://www.construct.net/en/make-games/manuals/construct-3/plugin-reference/mouse

### Touch
The Touch object detects input from touchscreen devices like phones and tablets, as well as desktops or laptops with touch-sensitive displays.

- **Documentation:** https://www.construct.net/en/make-games/manuals/construct-3/plugin-reference/touch

### Gamepad
The Gamepad object allows you to detect input from a connected console controller, PC gamepad or joystick.

- **Documentation:** https://www.construct.net/en/make-games/manuals/construct-3/plugin-reference/gamepad

---

## Additional Resources

### Custom Controls Template
There is a template for Construct 2 & Construct 3 to assign any combination of input from Keyboard, Gamepad, Joystick and Mouse to your game.(no content)You can combine any of those inputs together to make your game accessible for everyone. It's very important to give players the chance to change their input.
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Web search results for query: "GDevelop input conditions keyboard mouse touch gamepad documentation"

Links: [{"title":"Handle mouse and touch events - GDevelop documentation","url":"https://wiki.gdevelop.io/gdevelop5/all-features/mouse-touch/"},{"title":"Mouse and touch Reference - GDevelop documentation","url":"https://wiki.gdevelop.io/gdevelop5/all-features/mouse-touch/reference/"},{"title":"Keyboard - GDevelop documentation","url":"https://wiki.gdevelop.io/gdevelop5/all-features/keyboard/"},{"title":"Keyboard Reference - GDevelop documentation","url":"https://wiki.gdevelop.io/gdevelop5/all-features/keyboard/reference/"},{"title":"Gamepad - GDevelop documentation","url":"https://wiki.gdevelop.io/gdevelop5/all-features/gamepad/"},{"title":"Gamepads (controllers) - GDevelop documentation","url":"https://wiki.gdevelop.io/gdevelop5/extensions/gamepads/"},{"title":"Multitouch Joystick - GDevelop documentation","url":"https://wiki.gdevelop.io/gdevelop5/objects/multitouch-joystick/"},{"title":"4-desktop-and-mobile-controls - GDevelop documentation","url":"https://wiki.gdevelop.io/gdevelop5/tutorials/geometry-monster/4-desktop-and-mobile-controls/"},{"title":"Double-click and tap - GDevelop documentation","url":"https://wiki.gdevelop.io/gdevelop5/extensions/double-click/"},{"title":"Game (event) Keyboard option missing? - How do I...? - GDevelop Forum","url":"https://forum.gdevelop.io/t/game-event-keyboard-option-missing/19596"}]

Here's what I found about GDevelop's input conditions for keyboard, mouse, touch, and gamepad from the official documentation:

## Mouse and Touch

"The cursor/touch is on an object" condition checks if the mouse cursor or a screen touch is over an object. This condition can be used with "Mouse button pressed" or "Mouse button released" to check if the object is clicked or tapped.(no content)Conditions, actions and expressions are available to handle either the mouse or touches on a touchscreen, including cursor position, mouse wheel, mouse buttons, touch positions, started/ended touches, etc. By default, conditions related to the mouse will also handle touches, making it easier to handle both in your game. You can disable this behavior if you want to handle them separately.(no content)When activated, any touch made on a touchscreen will also move the mouse cursor. When deactivated, mouse and touch positions will be completely independent. By default, this is activated so you can simply use the mouse conditions to also support touchscreens. If you want multitouch and differentiate mouse movement and touches, you can deactivate it.

Key conditions include:

- Mouse button pressed or touch held - checks if the specified mouse button is pressed or if a touch is in contact with the screen.
- A new touch has started - checks if a touch has just started or the mouse left button has been pressed on this frame. The touch identifiers can be accessed using StartedTouchOrMouseId() and StartedTouchOrMouseCount().
- Mouse cursor is inside the window - checks if the mouse cursor is inside the window.

## Keyboard

GDevelop gives access to all inputs made on the keyboard. This includes conditions to check if a key was pressed or released.(no content)To test a key press using the condition, you need to enter the key name in the form of text expression. For example, if you want to check condition for left arrow key press, you need to enter "Left" in the field. Make sure that the key name is surrounded by quotes.(no content)Conditions check keys pressed on a keyboard. Note that this does not work with on-screen keyboard on touch devices: use instead mouse/touch conditions when making a game for mobile/touchscreen devices.

## Gamepad

Xbox, PlayStation and generic controllers are supported. This feature can be activated by adding the Gamepad extension to your project. You will then be able to use conditions and expressions to check if a gamepad is connected, if a button is pressed, released or if a stick is pushed.(no content)Gamepad button pressed - checks if a button is pressed on a gamepad. Buttons can be: Xbox: "A", "B", "X", "Y", "LB", "RB", "LT", "RT", "BACK", "START"; PS4: "CROSS", "SQUARE", "CIRCLE", "TRIANGLE", "L1", "L2", "R1", "R2", "SHARE", "OPTIONS", "PS_BUTTON", "CLICK_TOUCHPAD"; Other: "UP", "DOWN", "LEFT", "RIGHT", "CLICK_STICK_LEFT", "CLICK_STICK_RIGHT".

## Multitouch Joystick

Virtual joysticks are used in mobile games to give players similar controls to real gamepads. While a virtual joystick could be created manually with a mix of objects and events, it's often simpler to use a virtual joystick offered in the Asset Store. They also come with behaviors that allow developers to easily move an object with it.

For more details, check the official documentation pages:

- [Mouse and Touch](https://wiki.gdevelop.io/gdevelop5/all-features/mouse-touch/)
- [Keyboard](https://wiki.gdevelop.io/gdevelop5/all-features/keyboard/)
... [5 more lines]

Good progress. Let me continue with more engines.

Web search results for query: "Bevy game engine input system keyboard mouse gamepad Rust documentation"

Links: [{"title":"bevy::input - Rust","url":"https://docs.rs/bevy/latest/bevy/input/index.html"},{"title":"Input Handling - Unofficial Bevy Cheat Book","url":"https://bevy-cheatbook.github.io/input.html"},{"title":"Gamepad in bevy::input::gamepad - Rust","url":"https://docs.rs/bevy/latest/bevy/input/gamepad/struct.Gamepad.html"},{"title":"bevy-input-sequence - crates.io: Rust Package Registry","url":"https://crates.io/crates/bevy-input-sequence"},{"title":"bevy_enhanced_input - Rust","url":"https://docs.rs/bevy_enhanced_input"},{"title":"bevy::input::gamepad - Rust","url":"https://docs.rs/bevy/latest/bevy/input/gamepad/index.html"},{"title":"leafwing-input-manager - crates.io: Rust Package Registry","url":"https://crates.io/crates/leafwing-input-manager"},{"title":"leafwing-input-manager — Rust game dev // Lib.rs","url":"https://lib.rs/crates/leafwing-input-manager"},{"title":"ButtonInput in bevy::input::prelude - Rust","url":"https://docs.rs/bevy/latest/bevy/input/prelude/struct.ButtonInput.html"},{"title":"Gamepad in bevy::prelude - Rust","url":"https://docs.rs/bevy/latest/bevy/prelude/struct.Gamepad.html"}]

Here's what I found about Bevy's input system for keyboard, mouse, and gamepad handling:

## Official Bevy Input Module

The `bevy::input` module provides input functionality for the Bevy game engine. Bevy currently supports keyboard, mouse, gamepad, and touch inputs.

## Supported Input Types

Bevy supports the following inputs:

- **Keyboard**: detect when keys are pressed or released, or for text input
- **Mouse**: Motion, Cursor (absolute pointer position), Buttons, Scrolling (mouse wheel or touchpad gesture)
- **Touchpad Gestures**: only macOS/iOS supported
- **Touchscreen**: with multi-touch
- **Gamepad** (Controller, Joystick): via the gilrs library
- **Drag-and-Drop**: only for files
- **IME**: for advanced text input

## Handling Input State

Checking state is done using resources such as `ButtonInput` (for binary inputs like keys or buttons), `Axis` (for analog inputs), `Touches` (for fingers on a touchscreen), etc. This way of handling input is very convenient for implementing game logic.

### Keyboard & Mouse Example
You can use `keyboard_input.pressed(KeyCode::KeyA)` to check if a key is currently pressed, `keyboard_input.just_pressed(KeyCode::KeyA)` for when it's just pressed, and `keyboard_input.just_released(KeyCode::KeyA)` for when it's just released.

### Gamepad Example
For gamepad input, you can query for `&Gamepad` components and use methods like `gamepad.just_pressed(action.gamepad_button())` to check button presses, while keyboard input uses `Res<ButtonInput<KeyCode>>`.
... [21 more lines]

Web search results for query: "PixiJS input keyboard mouse events handling documentation"

Links: [{"title":"Events / Interaction | PixiJS","url":"https://pixijs.com/8.x/guides/components/events"},{"title":"Events","url":"https://pixijs.download/dev/docs/events.html"},{"title":"pixi.js-keyboard - npm","url":"https://www.npmjs.com/package/pixi.js-keyboard"},{"title":"GitHub - reececomo/pixijs-input-devices: 🕹️ Powerful, high-performance input handling for PixiJS","url":"https://github.com/reececomo/pixijs-input-devices"},{"title":"Keyboard Events With Pixi.js","url":"https://codepen.io/SkuliOskarsson/pen/ZbJKVW"},{"title":"Interaction | PixiJS","url":"https://pixijs.com/8.x/guides/components/interaction"},{"title":"GitHub - c-ridgway/pixi.js-keyboard: Handle keyboard events in the browser.","url":"https://github.com/c-ridgway/pixi.js-keyboard"},{"title":"GitHub - Nazariglez/pixi-keyboard","url":"https://github.com/Nazariglez/pixi-keyboard"},{"title":"Chapter 7: User Input and Interaction in Pixi.js – Quark Star Games","url":"https://quarkstargames.com/chapter-7-user-input-and-interaction-in-pixi-js/"},{"title":"PixiJS API Documentation","url":"https://pixijs.download/v4.8.9/docs/PIXI.interaction.InteractionManager.html"}]

Here's what I found about PixiJS input handling for keyboard, mouse, and touch events:

## Official PixiJS Event System (v8+)

PixiJS is primarily a rendering library, but it provides a flexible and performant event system designed for both mouse and touch input. This system replaces the legacy InteractionManager from previous versions with a unified, DOM-like federated event model.

### Enabling Interaction

To use the event system, set the `eventMode` of a Container (or its subclasses like Sprite) and subscribe to event listeners.

```javascript
const sprite = new Sprite(texture);
sprite.eventMode = 'static';
sprite.on('pointerdown', () => {
    console.log('Sprite clicked!');
});
```

### Available Event Types

**Pointer Events (recommended):**
PixiJS supports pointer events including `pointerdown`, `pointerup`, `pointermove`, `pointerover`, `pointerout`, and `globalpointermove`.

**Mouse-Specific Events:**
Mouse-specific events include `mousedown`, `mouseup`, `mousemove`, `click`, `rightclick`, and `wheel`.

... [33 more lines]

Web search results for query: "p5play input keyboard mouse gamepad API documentation"

Links: [{"title":"p5play : Input","url":"https://p5play.org/learn/input.html"},{"title":"InputDevice - Documentation","url":"https://p5play.org/docs/InputDevice.html"},{"title":"P5play","url":"https://p5play.org/learn/input_devices"},{"title":"_Mouse - Documentation","url":"https://p5play.org/docs/-_Mouse.html"},{"title":"lib/p5.play.js - Code.org p5.play","url":"https://code-dot-org.github.io/p5.play/docs/files/lib_p5.play.js.html"},{"title":"Documentation - p5play | CodeHS","url":"https://codehs.com/documentation/new/p5-play"},{"title":"Responding to Inputs","url":"https://p5js.org/tutorials/responding-to-inputs/"},{"title":"Global - Documentation","url":"https://p5play.org/docs/global.html"},{"title":"p5.play - Code.org p5.play","url":"https://code-dot-org.github.io/p5.play/docs/classes/p5.play.html"},{"title":"keywords:gamepad - npm search","url":"https://www.npmjs.com/search?q=keywords:gamepad"}]

Here's what I found about p5play's input API documentation for keyboard, mouse, and gamepad:

## p5play Input API Documentation

### Keyboard Input (`kb` object)
`kb` tracks nearly every key on the keyboard, including 'enter', 'backspace', and 'control'.(no content)Note that letter input is not case sensitive.

- To check if a user is pressing shift use: `kb.pressing('shift')`.
- Since the WASD keys are commonly used to control the player character's movement, you can use the direction names 'up', 'down', 'left', and 'right' to detect WASD and arrow key presses.
- Arrow keys can also be detected separately using 'arrowUp', 'arrowDown', 'arrowLeft', and 'arrowRight'.
- In local two player games it's common for the second player to use the IJKL keys for movement. These keys can be referenced using 'up2', 'down2', 'left2', and 'right2'.

### Mouse Input (`mouse` object)
The default mouse input is the 'left' button, a one finger click on trackpads. You can also use 'right' (two finger click) and 'center'.

- `mouse.x` and `mouse.y` store the position of the mouse in the world, based on the camera's position.
- `mouse.canvasPos` stores the absolute position of the mouse on the canvas.
- `mouse.visible` is a boolean that determines whether the mouse is visible or not.
- `mouse.cursor` can be set to a cursor style. The default is 'default', other options include 'grab', 'move', 'pointer', and 'wait'.

### Sprite Mouse Interactions
Sprites with physics colliders have their own mouse object for detecting mouse inputs on the sprite. `sprite.mouse` objects are just like the mouse input object, except they have additional functions.

- `hovers` and `hovering` detect when the user moves the mouse over a sprite.
- `dragging` detects when the user clicks and holds a mouse button on the sprite while moving the mouse.
- `sprite.mouse.presses()` will be true the entire time the user is pressing the mouse button on the sprite. `sprite.mouse.pressing()` will be true if the user clicked on the sprite.
... [22 more lines]

Web search results for query: "GameMaker Studio 2 input keyboard mouse gamepad functions documentation"

Links: [{"title":"Game Input","url":"https://manual.gamemaker.io/lts/en/GameMaker_Language/GML_Reference/Game_Input/Game_Input.htm"},{"title":"GitHub - LAGameStudio/InputCandy: Awesome gamepad support for GameMaker Studio 2 games.","url":"https://github.com/LAGameStudio/InputCandy"},{"title":"Gamepad Input","url":"https://manual.gamemaker.io/lts/en/GameMaker_Language/GML_Reference/Game_Input/GamePad_Input/Gamepad_Input.htm"},{"title":"Input Documentation","url":"https://offalynne.github.io/Input/"},{"title":"Asset - Extension - Input 6 - Comprehensive cross-platform input | GameMaker Community","url":"https://forum.gamemaker.io/index.php?threads/input-6-comprehensive-cross-platform-input.96283/"},{"title":"MaxLos' Input Script Pack (Gamemaker Studio 2) by MaxLos","url":"https://maxlos.itch.io/maxlos-input-script-pack"},{"title":"How To Set Up And Use A Gamepad With GameMaker | GameMaker","url":"https://gamemaker.io/en/tutorials/coffee-break-tutorials-setting-up-and-using-gamepads-gml"},{"title":"GitHub - messhof/Input-Dog: This is a collection of scripts for Game Maker: Studio that manage joysticks, gamepads, and custom mappings. It also includes replay support.","url":"https://github.com/messhof/Input-Dog"},{"title":"GML - Advice on Keyboard + Mouse and Gamepad Input System | GameMaker Community","url":"https://forum.gamemaker.io/index.php?threads/advice-on-keyboard-mouse-and-gamepad-input-system.108622/"},{"title":"8. IDE Input - 겜스 2 매뉴얼","url":"https://wikidocs.net/8051"}]

Here are the search results for GameMaker Studio 2 input documentation:

## Official GameMaker Documentation

In GameMaker, you can use dedicated mouse or keyboard events on PCs or gesture events on mobile, but when you need more control, you can use game input functions to get which buttons or keys have been pressed or released, retrieve touches on a screen, or how much a gamepad joystick has been moved. There are many functions for game input split into sections related to specific input methods.

**Official Manual Links:**

- [Game Input Overview](https://manual.gamemaker.io/lts/en/GameMaker_Language/GML_Reference/Game_Input/Game_Input.htm)
- [Gamepad Input](https://manual.gamemaker.io/lts/en/GameMaker_Language/GML_Reference/Game_Input/GamePad_Input/Gamepad_Input.htm)

## Gamepad Functions

GameMaker has a number of dedicated functions that can be used to detect both analog and digital controls from multiple connected gamepads. These functions work similar to Device Inputs, allowing you to detect up to four different XInput gamepads (and up to 8 DirectInput).(no content)When a gamepad is plugged in or removed, an asynchronous System event is triggered where you can handle the situation using appropriate functions.(no content)When using DirectInput gamepads on Windows or generic gamepads on other platforms, the constants may not match expected buttons due to the fragmented API implementation by manufacturers. It is recommended to have a gamepad setup screen where players can redefine buttons, using gamepad "mapping" functions available on Windows Desktop, Ubuntu, macOS, and Android.

## Third-Party Input Libraries

### Input Library (by Juju Adams)
Input is a GameMaker Studio 2 input manager that unifies native keyboard, mouse, and gamepad support to create an easy and robust mega-library.(no content)Input is built for GameMaker 2022 LTS and later, uses strictly native GML code, and is supported on every export platform. It is free and open source forever, including for commercial use.(no content)Input allows you to detect double taps, long holds, rapidfire, combos, and chords, and includes easy-to-implement accessibility features.

- [Input Library Documentation](https://offalynne.github.io/Input/)
- [Input Forum Thread](https://forum.gamemaker.io/index.php?threads/input-6-comprehensive-cross-platform-input.96283/)

### InputCandy
InputCandy provides a quick way of supporting most controllers (mouse, keyboard, and broadly implemented gamepad support) for game menus.

- [InputCandy GitHub](https://github.com/LAGameStudio/InputCandy)
... [3 more lines]

Good, let me continue with the remaining engines.

Web search results for query: "Cute Framework C game library input keyboard mouse gamepad documentation"

Links: [{"title":"GitHub - jkuhlmann/gainput: Cross-platform C++ input library supporting gamepads, keyboard, mouse, touch","url":"https://github.com/jkuhlmann/gainput"},{"title":"Gainput: C++ game input library","url":"https://gainput.johanneskuhlmann.de/"},{"title":"Keyboard, mouse, and controller input (C++) - Mixed Reality | Microsoft Learn","url":"https://learn.microsoft.com/en-us/windows/mixed-reality/develop/native/keyboard-mouse-and-controller-input-cpp"},{"title":"GitHub - r-lyeh/v1: 💎 3D game framework in C, v1.","url":"https://github.com/r-lyeh/v1"},{"title":"koz.ross/awesome-c: A curated list of awesome C frameworks, libraries, resources and other shiny things. Inspired by all the other awesome-... projects out there. - NotABug.org: Free code hosting","url":"https://notabug.org/koz.ross/awesome-c"},{"title":"gamepad · GitHub Topics · GitHub","url":"https://github.com/topics/gamepad?l=c"},{"title":"Keyboard Control and Character Movement: Coding a Retro Game with C Part 3 - Retro Game Coders","url":"https://retrogamecoders.com/retro-c-code-text-games/"},{"title":"How To Use Gamepad Or Joystick Controller In A C++ Builder VCL App?","url":"https://learncplusplus.org/how-to-use-gamepad-or-joystick-controller-in-a-c-builder-vcl-app/"},{"title":"GitHub - FeralAI/MPG: C++ library for handling USB gamepad inputs on multiple platforms.","url":"https://github.com/FeralAI/MPG"},{"title":"GitHub - ShadowBlip/OpenGamepadUI: Open source gamepad-native game launcher and overlay","url":"https://github.com/ShadowBlip/OpenGamepadUI"}]

Based on my search, I didn't find specific documentation for the "Cute Framework" C game library's input handling. However, I found some related information:

The "Cute" framework is mentioned as one of several alternative C game libraries, alongside others like "amulet, aroma, astera, blendelf, bullordengine, candle, cave, chickpea, corange, cute, dos-like, ejoy2d, exengine, gunslinger" and more.

The search results mostly returned information about other input/game libraries:

1. **Gainput** - A C++ input library that provides "a unified interface on all supported platforms: Android NDK, iOS/tvOS, Linux, macOS, Windows" with "supported devices: keyboard, mouse, gamepad, multi-touch, device built-in sensors."

2. **SDL2** - "Cross-platform library designed to provide low-level access to audio, keyboard, mouse, joystick and graphics hardware via OpenGL."

3. **V1 Framework** - A 3D game framework in C that supports "Input: keyboard, mouse and gamepads" with "input bindings."

Would you like me to do a more specific search for "Cute Framework" documentation? I could try searching for:

- "cute_framework github" 
- "RandyGaul cute framework"
- "cute headers game library"

These might yield more targeted results for the specific Cute Framework you're looking for.


REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

Web search results for query: "LOVR VR framework input keyboard mouse controller documentation"

Links: [{"title":"LÖVR Framework – Implementing Mouse/Keyboard Input – CodeWritePlay","url":"https://codewriteplay.com/2022/08/02/lovr-framework-implementing-mouse-keyboard-input/"},{"title":"LÖVR","url":"https://lovr.org/"},{"title":"FAQ","url":"https://lovr.org/docs/FAQ"},{"title":"Unity - Manual: Input for OpenVR controllers","url":"https://docs.unity3d.com/550/Documentation/Manual/OpenVRControllers.html"},{"title":"GitHub - immortalx74/lovr-ui: An immediate mode VR GUI library for LÖVR","url":"https://github.com/immortalx74/lovr-ui"},{"title":"GitHub - matzman666/OpenVR-InputEmulator: An OpenVR driver that allows to create virtual controllers, emulate controller input, manipulate poses of existing controllers and remap buttons. A client-side library that communicates with the driver via shared-memory is also included.","url":"https://github.com/matzman666/OpenVR-InputEmulator"},{"title":"Let’s Learn the LÖVR Framework – Part 1 - CodeWritePlay","url":"https://codewriteplay.com/2022/07/22/lets-learn-the-lovr-framework-part-1/"},{"title":"Releases · bjornbytes/lovr","url":"https://github.com/bjornbytes/lovr/releases"},{"title":"GitHub - BOLL7708/OpenVR2Key: Simulates key presses from SteamVR input","url":"https://github.com/BOLL7708/OpenVR2Key"},{"title":"lovr.system.isKeyDown","url":"https://lovr.org/docs/lovr.system.isKeyDown"}]

Here are the search results for LÖVR VR framework input documentation:

## LÖVR Input System Overview

### Built-in Keyboard & Mouse Support

According to the official FAQ, LÖVR provides keyboard and mouse input through `lovr.system` functions and input events like `lovr.keypressed`, `lovr.mousemoved`, etc.(no content)The `lovr.system.isKeyDown` function returns whether a key on the keyboard is pressed.(no content)Recent updates changed `lovr.system.isKeyDown` to take multiple keys.

### VR Simulator Mode

LÖVR is powered by OpenXR and Vulkan for compatibility with various hardware. It can also simulate a VR headset using keyboard and mouse, so you don't need any VR hardware to get started.(no content)LÖVR activates input for VR testing that uses WASD + left mouse to emulate movement, strafing, and free look.

### External Libraries

There are `lovr-keyboard` and `lovr-mouse` libraries available for mouse and keyboard input.(no content)Early versions of the LÖVR framework were so VR-focused there wasn't much native keyboard or mouse support. Since then, keyboard and mouse input libraries have been made available and, separately, `keypressed` and `keyreleased` callbacks have been added to the framework natively.

### Mouse Movement Example

The `mousemoved(x, y, dx, dy)` function allows you to capture cursor movement for camera control.

### VR Controller Input

LÖVR supports the Oculus Quest, Valve Index controllers, and SteamVR actions.(no content)`lovr.headset.isDown/isTouched` returns nil instead of nothing when checking controller button states.

### Design Philosophy

... [10 more lines]

Web search results for query: "FNA XNA input keyboard mouse gamepad API documentation"

Links: [{"title":"FNA/src/Input/GamePad.cs at master · FNA-XNA/FNA","url":"https://github.com/FNA-XNA/FNA/blob/master/src/Input/GamePad.cs"},{"title":"5: FNA Extensions - FNA Docs - FNA-XNA","url":"https://fna-xna.github.io/docs/5:-FNA-Extensions/"},{"title":"2b: Building New Games with FNA - FNA Docs","url":"https://fna-xna.github.io/docs/2b:-Building-New-Games-with-FNA/"},{"title":"2b: Building New Games with FNA · FNA-XNA/FNA Wiki · GitHub","url":"https://github.com/FNA-XNA/FNA/wiki/2b:-Building-New-Games-with-FNA"},{"title":"2b: FNA From Scratch Tutorial · FNA-XNA/FNA Wiki · GitHub","url":"https://github.com/FNA-XNA/FNA/wiki/2b:-FNA-From-Scratch-Tutorial"},{"title":"docs/docs/4:-FNA-and-Windows-API.md at main · FNA-XNA/docs","url":"https://github.com/FNA-XNA/docs/blob/main/docs/4:-FNA-and-Windows-API.md"},{"title":"5: FNA Extensions · FNA-XNA/FNA Wiki · GitHub","url":"https://github.com/FNA-XNA/FNA/wiki/5:-FNA-Extensions/157d04ea37c726f4000b5e3be6f79072b9d06176"},{"title":"FNA-XNA/FNA | DeepWiki","url":"https://deepwiki.com/FNA-XNA/FNA"},{"title":"4: FNA and Windows API · FNA-XNA/FNA Wiki · GitHub","url":"https://github.com/FNA-XNA/FNA/wiki/4:-FNA-and-Windows-API"},{"title":"4: FNA and Windows API - FNA Docs - FNA-XNA","url":"https://fna-xna.github.io/docs/4:-FNA-and-Windows-API/"}]

Here are the search results for FNA/XNA input API documentation:

## FNA Input System Overview

FNA exposes GamePad, Keyboard, and Mouse for user input.(no content)There is also a Microsoft.Xna.Framework.Input.Touch namespace for touch screen support.

### Basic Input Pattern

Input isn't terribly complicated; you store two copies of input state, one for current input and another for previous input.

The standard approach involves:

- `Keyboard.GetState()` - Returns a `KeyboardState` object
- `Mouse.GetState()` - Returns a `MouseState` object  
- `GamePad.GetState(PlayerIndex)` - Returns a `GamePadState` object

### GamePad Implementation

FNA uses SDL_GameController for its GamePad implementation, which supports both XInput and DirectInput on Windows (and for Linux/macOS, we support the standard joystick input interfaces).(no content)Even for non-XInput controllers you can expect them to map to the 360 layout provided by GamePad; SDL_GameController pulls in configurations from its own internal database as well as the Steam Big Picture Mode database. Additionally, FNA checks for gamecontrollerdb.txt in the game's root folder so that developers and customers may add their own configurations.(no content)Per XNA4, FNA tracks 4 gamepads by default, but you can track more by changing PlayerIndex.cs or setting the `FNA_GAMEPAD_NUM_GAMEPADS` environment variable.

### FNA Extensions for Input

The GamePad extensions are unique in that there are a lot of them and are generally recommended to use.

Key extensions include:

- `GetGUIDEXT(PlayerIndex playerIndex)` is a new method for GamePad that allows you to get the hardware GUID for a given controller.
... [16 more lines]

Web search results for query: "Phaser 3 input keyboard mouse gamepad pointer API documentation"

Links: [{"title":"Deprecated: Phaser 3 API Documentation - Class: Gamepad","url":"https://photonstorm.github.io/phaser3-docs/Phaser.Input.Gamepad.Gamepad.html"},{"title":"Deprecated: Phaser 3 API Documentation - Class: Pointer","url":"https://photonstorm.github.io/phaser3-docs/Phaser.Input.Pointer.html"},{"title":"InputManager","url":"https://docs.phaser.io/api-documentation/class/input-inputmanager"},{"title":"Input","url":"https://docs.phaser.io/phaser/concepts/input"},{"title":"InputPlugin","url":"https://docs.phaser.io/api-documentation/class/input-inputplugin"},{"title":"Deprecated: Phaser 3 API Documentation - Class: InputManager","url":"https://photonstorm.github.io/phaser3-docs/Phaser.Input.InputManager.html"},{"title":"Phaser.Input - Phaser 3 API Documentation","url":"https://newdocs.phaser.io/docs/3.55.1/Phaser.Input"},{"title":"pointers - Phaser 3 API Documentation","url":"https://newdocs.phaser.io/docs/3.80.0/focus/Phaser.Input.InputManager-pointers"},{"title":"pointers - Phaser 3 API Documentation (beta)","url":"https://newdocs.phaser.io/docs/3.55.2/focus/Phaser.Input.InputManager-pointers"},{"title":"Deprecated: Phaser 3 API Documentation - Class: InputPlugin","url":"https://photonstorm.github.io/phaser3-docs/Phaser.Input.InputPlugin.html"}]

Here's what I found about Phaser 3's input API documentation for keyboard, mouse, gamepad, and pointer:

## Phaser 3 Input System Overview

Internally there is a global Input Manager and every Scene has an instance of the Input Plugin. The Input Manager is responsible for listening for native DOM events, such as mouse movement, touch gestures and keyboard presses. It then passes these events on to the Input Plugins, which in turn processes them.(no content)Phaser combines mouse and touch (pointer) events into one single unified API. When you enable a Game Object for input and listen for an event, such as 'pointerdown', it doesn't matter if it was a mouse click on a desktop, or a finger pointer on a mobile that caused it. Phaser will emit the same event for your game to listen for.

### Key Documentation Resources

**Current Documentation (recommended):**

- https://docs.phaser.io/phaser/concepts/input (Input concepts)
- https://docs.phaser.io/api-documentation/class/input-inputplugin (InputPlugin API)
- https://docs.phaser.io/api-documentation/class/input-inputmanager (InputManager API)
- https://newdocs.phaser.io (Latest API reference)

**Note:** The legacy documentation at photonstorm.github.io is 4+ years out of date. Please see https://newdocs.phaser.io for current documentation.

### Input Architecture

Keyboard and Gamepad are plugins, handled directly by the InputPlugin class. It then manages the events, pointer creation and general hit test related operations.

### Key Components

**InputPlugin (Scene-level)** - Provides access to:

- An instance of the Gamepad Plugin class, if enabled via the input.gamepad Scene or Game Config property. Use this to create access Gamepads connected to the browser and respond to gamepad buttons.
- An instance of the Keyboard Plugin class, if enabled via the input.keyboard Scene or Game Config property. Use this to create Key objects and listen for keyboard specific events.

... [15 more lines]

Let me search for the KaboomJS and Cute Framework specifically, and also get more details on some of the APIs I found.

Web search results for query: ""cute_framework" OR "cute framework" RandyGaul input keyboard mouse"

Links: [{"title":"GitHub - RandyGaul/cute_framework: The *cutest* framework out there for creating 2D games in C++!","url":"https://github.com/RandyGaul/cute_framework"},{"title":"Cute Framework","url":"https://randygaul.github.io/cute_framework/"},{"title":"Releases · RandyGaul/cute_framework","url":"https://github.com/RandyGaul/cute_framework/releases"},{"title":"Debug/Tools UI - Cute Framework","url":"https://randygaul.github.io/cute_framework/topics/dear_imgui/"},{"title":"RandyGaul/cute_framework","url":"https://github.com/RandyGaul/cute_framework/issues"},{"title":"online document · Issue #30 · RandyGaul/cute_framework","url":"https://github.com/RandyGaul/cute_framework/issues/30"},{"title":"Virtual File System - Cute Framework","url":"https://randygaul.github.io/cute_framework/topics/virtual_file_system/"},{"title":"cute_framework/libraries/cute/cute_spritebatch.h at master · RandyGaul/cute_framework","url":"https://github.com/RandyGaul/cute_framework/blob/master/libraries/cute/cute_spritebatch.h"},{"title":"cute_framework | The * cutest * framework out there for creating 2D games | Game Engine library","url":"https://kandi.openweaver.com/c/RandyGaul/cute_framework"},{"title":"cute_framework/cute_audio.h at master · RandyGaul/cute_framework","url":"https://github.com/RandyGaul/cute_framework/blob/master/include/cute_audio.h"}]

Based on my search, here's what I found about **Cute Framework** by RandyGaul and its input/keyboard/mouse handling:

## Cute Framework Overview

Cute Framework (CF) is the cutest framework available for making 2D games in C++. It provides a portable foundational layer for building 2D games in C/C++ without baggage, gnarly dependencies, or cryptic APIs. CF runs almost anywhere, including Windows, MacOS, iOS, Android, Linux, Browsers, and more!

## Input Samples and Documentation

The framework includes samples to help get started, such as one of the simpler ones, perhaps basic_sprite or basic_input.c.

## Keyboard Input API

The framework provides keyboard input functions. From the Dear ImGui integration example, you can see keyboard input handling in action:

The code demonstrates keyboard input with functions like `cf_key_just_pressed(CF_KEY_SPACE)` and `cf_key_just_pressed(CF_KEY_X)` to detect when specific keys are pressed.

## Text Input Support

Recent releases have improved IME and text input support.

## Resources

- **GitHub Repository**: https://github.com/RandyGaul/cute_framework
- **Documentation Site**: The official documentation describes it as "The cutest framework available for making 2D games in C/C++" at https://randygaul.github.io/cute_framework/

You should visit the Cute Framework documentation site for more in-depth details and steps.
... [5 more lines]

Web search results for query: "Godot Input.is_action_just_pressed is_action_pressed get_axis get_vector documentation"

Links: [{"title":"Input — Godot Engine (stable) documentation in English","url":"https://docs.godotengine.org/en/stable/classes/class_input.html"},{"title":"Input — Godot Engine (4.3) documentation in English","url":"https://docs.godotengine.org/en/4.3/classes/class_input.html"},{"title":"Introducing the new axis handling system – Godot Engine","url":"https://godotengine.org/article/handling-axis-godot/"},{"title":"Input — Godot Engine (4.4) documentation in English","url":"https://docs.godotengine.org/en/4.4/classes/class_input.html"},{"title":"godot.Input - Haxe/C# Godot API reference","url":"https://haxegodot.github.io/godot/godot/Input.html"},{"title":"godot/core/input/input.cpp at master · godotengine/godot","url":"https://github.com/godotengine/godot/blob/master/core/input/input.cpp"},{"title":"Input — Godot Engine (3.0) documentation in English","url":"https://docs.godotengine.org/en/3.0/classes/class_input.html"},{"title":"Using InputEvent — Godot Engine (stable) documentation in English","url":"https://docs.godotengine.org/en/stable/tutorials/inputs/inputevent.html"},{"title":"Docs on new method to get Input is factually wrong and misleading · Issue #5378 · godotengine/godot-docs","url":"https://github.com/godotengine/godot-docs/issues/5378"},{"title":"Input examples — Godot Engine (stable) documentation in English","url":"https://docs.godotengine.org/en/stable/tutorials/inputs/input_examples.html"}]

Here are the search results for Godot's Input documentation:

## Godot Input Class Documentation

The Input class is a singleton for handling inputs that handles key presses, mouse buttons and movement, gamepads, and input actions.

### Key Methods

**is_action_pressed / is_action_just_pressed:**

- `is_action_just_released` returns true when the user stops pressing the action event, meaning it's true only on the frame that the user released the button. `is_action_pressed` returns true if you are pressing the action event.

**get_axis:**

- `get_axis` gets axis input by specifying two actions, one negative and one positive. This is a shorthand for writing `Input.get_action_strength("positive_action") - Input.get_action_strength("negative_action")`.

**get_vector:**

- The `get_vector` method takes parameters: `negative_x`, `positive_x`, `negative_y`, `positive_y`, and an optional `deadzone` parameter.

### Action Strength System

Actions report a strength represented as a single floating point value ranging from 0.0 to 1.0. For basic buttons or keys, strength will always return either 0 or 1.(no content)To map a single axis, the input mapping system requires two different actions (such as left and right, or up and down). A full axis (-1.0 to 1.0) can be read using: `var horizontal = Input.get_action_strength("right") - Input.get_action_strength("left")`

### Usage Example

A convenient way to get analog input is: `var velocity = Vector2(Input.get_axis("left", "right"), Input.get_axis("up", "down"))` which also applies axis deadzones.

### Official Documentation Links:
... [7 more lines]

Web search results for query: "KaboomJS input keyboard mouse gamepad API documentation"

Links: [{"title":"Kaboom.js","url":"https://kaboomjs.com/"},{"title":"KAPLAY Guides, Buttons API","url":"https://kaplayjs.com/docs/guides/input/"},{"title":"Gamepad","url":"https://www.w3.org/TR/gamepad/"},{"title":"Gamepad API hooks? · replit/kaboom · Discussion #166","url":"https://github.com/replit/kaboom/discussions/166?sort=top"},{"title":"keywords:gamepad - npm search","url":"https://www.npmjs.com/search?q=keywords:gamepad"},{"title":"The best javascript input controller for game. Include gamepad support. · GitHub","url":"https://gist.github.com/grifdail/75d2b8596b8a5895ba19"},{"title":"Implementing controls using the Gamepad API - Game development | MDN","url":"https://developer.mozilla.org/en-US/docs/Games/Techniques/Controls_Gamepad_API"},{"title":"Using The Gamepad API In Web Games — Smashing Magazine","url":"https://www.smashingmagazine.com/2015/11/gamepad-api-in-web-games/"},{"title":"Using the Gamepad API - Web APIs | MDN","url":"https://developer.mozilla.org/en-US/docs/Web/API/Gamepad_API/Using_the_Gamepad_API"},{"title":"How to implement player controls for a 2D top-down mobile web game in Kaboom.js","url":"https://jslegenddev.substack.com/p/how-to-implement-player-controls"}]

Based on the search results, here's information about KaboomJS's input API for keyboard, mouse, and gamepad:

## KaboomJS Input API Documentation

### Mouse Events
From the official KaboomJS documentation:

- "Register an event that runs every frame when a mouse button is being held down."
- "Register an event that runs when user clicks mouse."
- "Register an event that runs when user releases mouse."
- "Register an event that runs whenever user move the mouse."
- "Register an event that runs when mouse wheel scrolled."
- "If mouse moved last frame."

### Touch Events

- "Register an event that runs when a touch starts."
- "Register an event that runs whenever touch moves."
- "Register an event that runs when a touch ends."
- "If translate touch events as mouse clicks (default true)."

### Gamepad Events

- "Register an event that runs every frame when certain gamepad button is held down."
- "Register an event that runs every frame when any gamepad button is held down."
- "Register an event that runs when user presses certain gamepad button."
- "Register an event that runs when a gamepad is connected."
- "Register an event that runs when a gamepad is disconnected."
- "If a gamepad button is currently held down."
... [19 more lines]

Now let me look at the actual cute framework documentation for input specifically.

# Input Functions in Cute Framework

Based on the provided web page content, I cannot extract specific keyboard, mouse, and gamepad input functions with their names and descriptions. 

The page is the home/landing page for the Cute Framework documentation. While there is a navigation link to an "[Input](topics/input/)" topic section, the actual content of that page—which would contain the detailed information about input functions—is not included in the provided material.

To access information about input functions in Cute Framework, you would need to navigate to the Input topic page directly through the framework's documentation site.

Web search results for query: "Unity Input System "WasPressedThisFrame" "WasReleasedThisFrame" "ReadValue" action API"

Links: [{"title":"Class InputAction | Input System | 1.2.0","url":"https://docs.unity3d.com/Packages/[email protected]/api/UnityEngine.InputSystem.InputAction.html"},{"title":"wasPressedThisFrame for actions? - Unity Engine - Unity Discussions","url":"https://discussions.unity.com/t/waspressedthisframe-for-actions/827628"},{"title":"Actions | Input System | 1.5.1","url":"https://docs.unity3d.com/Packages/[email protected]/manual/Actions.html"},{"title":"Actions | Input System | 1.4.4","url":"https://docs.unity3d.com/Packages/[email protected]/manual/Actions.html"},{"title":"Migrate From Old Input System | Package Manager UI ...","url":"https://docs.unity3d.com/Packages/[email protected]/manual/Migration.html"},{"title":"Class InputAction | Input System | 1.1.1","url":"https://docs.unity3d.com/Packages/[email protected]/api/UnityEngine.InputSystem.InputAction.html"},{"title":"InputSystem/Packages/com.unity.inputsystem/Documentation~/Migration.md at develop · Unity-Technologies/InputSystem","url":"https://github.com/Unity-Technologies/InputSystem/blob/develop/Packages/com.unity.inputsystem/Documentation~/Migration.md"},{"title":"WasPressedThisFrame not working with new input system - Unity Engine - Unity Discussions","url":"https://discussions.unity.com/t/waspressedthisframe-not-working-with-new-input-system/848663"},{"title":"Migrating from the old input system | Input System | 1.1.1","url":"https://docs.unity3d.com/Packages/[email protected]/manual/Migration.html"},{"title":"Migrating from the old input system","url":"https://docs.unity3d.com/Packages/[email protected]/manual/Migration.html"}]

Here's what I found about Unity's Input System action API for `WasPressedThisFrame`, `WasReleasedThisFrame`, and `ReadValue`:

## ReadValue\<TValue\>()

`ReadValue<TValue>()` reads the current value of the action. This is the last value received on `started` or `performed`. If the action is in canceled or waiting phase, it returns `default(TValue)`.(no content)This method can be used as an alternative to hooking into `started`, `performed`, and/or `canceled` callbacks. Instead, this API acts more like a polling API that can be called, for example, as part of `MonoBehaviour.Update`.

Example usage:
```csharp
var moveDirection = moveAction.ReadValue<Vector2>();
```

## WasPressedThisFrame()

In the frame where the space bar is pressed, `WasPressedThisFrame()` will be true (because the button/key is now pressed) but `WasPerformedThisFrame` will still be false (because the hold has not been performed yet).(no content)This method will disregard whether the action is currently enabled or disabled. It will keep returning true for the duration of the frame even if the action was subsequently disabled in the frame. The meaning of "frame" is either the current dynamic update (`MonoBehaviour.Update`) or the current fixed update (`MonoBehaviour.FixedUpdate`) depending on the value of the `updateMode` setting.

## WasReleasedThisFrame()

Returns true if the action's value crossed the release threshold (see `buttonReleaseThreshold`) at any point in the frame after being in pressed state. This method works with any type of action, not just buttons. Also note that because this operates on the results of `EvaluateMagnitude()`, it works with many kinds of controls, not just buttons.

## Example Usage

Here's a typical polling pattern in `Update()`:
```csharp
public PlayerInput playerInput;

public void Update() {
... [20 more lines]

Let me search for some more specific patterns and features in input systems.

# Cute Framework Overview

Based on the webpage content, here's what I found:

## Framework Description
Cute Framework is described as "the _cutest_ framework available for making 2D games in C/C++." It's a foundational layer designed for 2D game development that is completely open source and free.

## Key Features
The framework targets broad platform support, including desktops, mobile devices, web browsers, and additional platforms. Development setup takes approximately five minutes using CMake configuration.

## Input Handling
The navigation menu references an **Input** topic section specifically designed to cover keyboard, mouse, and gamepad functionality. However, the actual technical documentation for these input systems isn't included in the provided page content.

## Community & Resources
The project maintains an active Discord community for developer support and collaboration. Comprehensive documentation covers numerous subsystems including file I/O, graphics rendering, audio, networking, collision detection, and multithreading.

The framework appears well-suited for developers seeking a lightweight, cross-platform solution for 2D game creation in C/C++.

Web search results for query: "game input "double tap" "hold duration" "long press" detection API pattern"

No links found.

The search didn't return results for that specific query. Let me try a more focused search:

Links: [{"title":"GitHub - ahmsville/Advanced_capacitive_touch_detection: These Arduino capacitive touch library allows advanced touch detections; such as, Double tap, Short press and Long press. Also featured in the library is a haptics controller.","url":"https://github.com/ahmsville/Advanced_capacitive_touch_detection"},{"title":"How to make Buttons detect tap, double tap and long press gestures in SwiftUI | by Federica Benacquista | Medium","url":"https://federicabenacquista.medium.com/how-to-make-buttons-detect-tap-double-tap-and-long-press-gestures-in-swiftui-ce079c4ef9f8"},{"title":"Gesture detection - libGDX","url":"https://libgdx.com/wiki/input/gesture-detection"},{"title":"Button Double tap and Hold/Long Press in Melee Input | Invector","url":"https://invector.proboards.com/thread/4365/button-double-press-melee-input"},{"title":"Controller Double Tapping :: Help and Tips","url":"https://steamcommunity.com/discussions/forum/1/1621724915803605735/"},{"title":"Interactions | Input System | 1.0.2","url":"https://docs.unity3d.com/Packages/[email protected]/manual/Interactions.html"},{"title":"Double-tap trigger bindings? :: Steam Controller (2015) General Discussions","url":"https://steamcommunity.com/app/353370/discussions/0/135510669594055093/"},{"title":"Detecting a double tap | PlayCanvas Developer Site","url":"https://developer.playcanvas.com/tutorials/detecting-a-double-tap/"},{"title":"Scroll, Press, and Tap: A Guide of Android Gesture Detection | by RobinHoo | Medium","url":"https://medium.com/@robinhoo990512/scroll-press-and-tap-a-guide-of-android-gesture-detection-eb63104c526c"},{"title":"Code to detect single or double click - Programming - Arduino Forum","url":"https://forum.arduino.cc/t/code-to-detect-single-or-double-click/915386"}]

Here are the search results for game input detection patterns related to double tap, hold duration, and long press:

## Key Findings

### Unity Input System (Official API)
A `HoldInteraction` requires the user to hold a Control for duration seconds before the Input System triggers the Action. A `TapInteraction` requires the user to press and release a Control within duration seconds to trigger the Action.(no content)A `SlowTapInteraction` requires the user to press and hold a Control for a minimum duration of duration seconds, and then release it, to trigger the Action. A `MultiTapInteraction` requires the user to press and release a Control within tapTime seconds tapCount times, with no more than tapDelay seconds passing between taps. You can use this to detect double-click or multi-click gestures.(no content)While Performed is typically the phase that triggers the actual response to an Interaction, Started and Canceled can be useful for providing UI feedback while the Interaction is in progress. For example, when a hold is Started, the app can display a progress bar that fills up until the hold time has been reached. If, however, the hold is Canceled before it completes, the app can reset the progress bar to the beginning.

### libGDX GestureDetector
A gesture could be a pinch with two fingers to indicate the desire to zoom, a tap or double tap, a long press and so on. libGDX provides a GestureDetector that lets you detect gestures including tap (user touches and lifts finger). The finger must not move outside a specified square area around the initial touch position for a tap to be registered. Multiple consecutive taps will be detected if the user performs taps within a specified time interval.

### Arduino Capacitive Touch Library
The `detect_touchFromNoise()` function returns 1-4 based on the input detected: 1 = singletap, 2 = doubletap, 3 = shortpress, 4 = longpress.(no content)The library allows setting thresholds with `set_inputTypeThresholds(20, 40, 70, 150)` for the four input types (singletap, shortpress, longpress, doubletapspeed).

### Android GestureDetector
In mobile development, gesture detection is key for your app to understand how users interact, such as single tap, double tap, long press, and scrolling actions. The Android GestureDetector provides an easy way to handle various gestures. With three interfaces — OnGestureListener, OnDoubleTapListener and OnContextClickListener — you can use SimpleOnGestureListener which implements all these interfaces.(no content)For long press: callback on user pressing and holding after a certain amount of time. For single tap: notified after a single tap, with a slight delay to ensure no other gesture on the next touch (such as a double tap).

### SwiftUI Pattern
Order the gestures by their complexity, starting with the most intricate and progressing to simpler ones. For example, if you need a LongPressGesture and a TapGesture, put the former before the latter. If adding a double tap, place it before the single TapGesture and after the LongPressGesture. The reason is that basic gestures like single tap, when placed before complex ones, cause the system to ignore the latter.


REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

Let me search for more details, especially about Unity's Interactions system and the Input library for GameMaker which was mentioned as comprehensive.

Web search results for query: "GameMaker "Input" library Juju Adams verbs chords combos documentation"

Links: [{"title":"Input 6 by Juju Adams | GameMaker: Marketplace","url":"https://marketplace.gamemaker.io/assets/10881/input-6"},{"title":"Input Documentation","url":"https://www.jujuadams.com/Input/"},{"title":"GitHub - JujuAdams/Input: Comprehensive cross-platform input for GameMaker","url":"https://github.com/JujuAdams/Input"},{"title":"GitHub - offalynne/Input: Comprehensive cross-platform input for GameMaker","url":"https://github.com/offalynne/Input"},{"title":"JujuAdams (Juju Adams) · GitHub","url":"https://github.com/JujuAdams/"},{"title":"Asset - Extension - Input 6 - Comprehensive cross-platform input | GameMaker Community","url":"https://forum.gamemaker.io/index.php?threads/input-6-comprehensive-cross-platform-input.96283/"},{"title":"Input Documentation","url":"https://offalynne.github.io/Input/"},{"title":"Input 5 by Juju Adams | GameMaker: Marketplace","url":"https://marketplace.yoyogames.com/assets/10881/input-5"},{"title":"GameMaker - No key equivalent in Input Library by Juju Adams? | GameMaker Community","url":"https://forum.gamemaker.io/index.php?threads/no-key-equivalent-in-input-library-by-juju-adams.108717/"},{"title":"JujuAdams Input Versions - Open Source Agenda","url":"https://www.opensourceagenda.com/projects/jujuadams-input/versions"}]

Here are the search results for the GameMaker "Input" library by Juju Adams:

## Overview

Input is a GameMaker Studio 2 input manager that unifies the native, piecemeal keyboard, mouse, and gamepad support to create an easy and robust mega-library.(no content)Input is built for GMS 2022 LTS and later, uses strictly native GML code, and is supported on every export platform that GameMaker itself supports.

## Features: Verbs, Chords, and Combos

Input adds new ways of checking inputs. Not only does Input allow you to detect double taps, long holds, rapidfire, combos, and chords, but it also introduces easy-to-implement accessibility features.(no content)Configuration has been improved as well, with clear verb and verb group definitions and easier to understand platform settings.(no content)You can use the keyword `all` like so: `input_check(all);` however it will only check assigned verbs.

## Documentation

The documentation is available at:
- **Official Documentation**: https://www.jujuadams.com/Input/ (Juju Adams' site)
- **Alternative Documentation**: https://offalynne.github.io/Input/

## Source Code & Marketplace

- The GitHub repository at JujuAdams/Input offers comprehensive cross-platform input for GameMaker.
- There's also offalynne/Input for comprehensive cross-platform input for GameMaker 2024.13 by Juju Adams, Alynne Keith, and Friends.
- Input is now maintained by offalynne.

## Commercial Use

Input is a commercial-grade library and is being used in Shovel Knight: Pocket Dungeon and Samurai Gunn 2 and many other titles.(no content)Input is free and open source forever, including for commercial use.(no content)Input is released under the MIT license. This means you can use it for whatever purpose you want, including commercial projects. It'd mean a lot to me if you'd drop our names in your credits (Juju Adams and Alynne Keith) and/or say thanks, but you're under no obligation to do so.

... [2 more lines]

Web search results for query: "Unity Input System interactions "HoldInteraction" "TapInteraction" "MultiTapInteraction" configuration"

Links: [{"title":"Interactions | Input System | 1.0.2","url":"https://docs.unity3d.com/Packages/[email protected]/manual/Interactions.html"},{"title":"Interactions | Input System | 1.4.4","url":"https://docs.unity3d.com/Packages/[email protected]/manual/Interactions.html"},{"title":"Class MultiTapInteraction | Input System | 1.0.2","url":"https://docs.unity3d.com/Packages/[email protected]/api/UnityEngine.InputSystem.Interactions.MultiTapInteraction.html"},{"title":"InputSystem/Packages/com.unity.inputsystem/InputSystem/Actions/Interactions/MultiTapInteraction.cs at develop · Unity-Technologies/InputSystem","url":"https://github.com/Unity-Technologies/InputSystem/blob/develop/Packages/com.unity.inputsystem/InputSystem/Actions/Interactions/MultiTapInteraction.cs"},{"title":"Interactions | Input System | 1.1.1","url":"https://docs.unity3d.com/Packages/[email protected]/manual/Interactions.html"},{"title":"Interactions | Input System | 1.13.1","url":"https://docs.unity3d.com/Packages/[email protected]/manual/Interactions.html"},{"title":"Class MultiTapInteraction | Package Manager UI website","url":"https://docs.unity3d.com/Packages/[email protected]/api/UnityEngine.InputSystem.Interactions.MultiTapInteraction.html"},{"title":"Interactions | Input System | 1.5.1","url":"https://docs.unity3d.com/Packages/[email protected]/manual/Interactions.html"},{"title":"Interactions | Input System | 1.2.0","url":"https://docs.unity3d.com/Packages/[email protected]/manual/Interactions.html"},{"title":"Class MultiTapInteraction | Input System | 1.12.0","url":"https://docs.unity3d.com/Packages/[email protected]/api/UnityEngine.InputSystem.Interactions.MultiTapInteraction.html"}]

Here's what I found about Unity Input System interactions configuration:

## Built-in Interactions

### HoldInteraction
A HoldInteraction requires the user to hold a Control for `duration` seconds before the Input System triggers the Action.

### TapInteraction
A TapInteraction requires the user to press and release a Control within `duration` seconds to trigger the Action.

### SlowTapInteraction
A SlowTapInteraction requires the user to press and hold a Control for a minimum duration of `duration` seconds, and then release it, to trigger the Action.

### MultiTapInteraction
A MultiTapInteraction requires the user to press and release a Control within `tapTime` seconds `tapCount` times, with no more than `tapDelay` seconds passing between taps, for the Interaction to trigger.(no content)You can use this to detect double-click or multi-click gestures.

## MultiTapInteraction Configuration Properties

The interaction goes into Started on the first press and then will not trigger again until either the full tap sequence is performed (in which case the interaction triggers Performed) or the multi-tap is aborted by a timeout being hit (in which case the interaction will trigger Canceled).

Key properties:
- **pressPoint**: Magnitude threshold that must be crossed by an actuated control for the control to be considered pressed. If this is less than or equal to 0 (the default), `defaultButtonPressPoint` is used instead.
- **tapCount**: The number of taps required to perform the interaction. "Two means double-tap, three means triple-tap, and so on."
- **tapTime**: The time in seconds within which the control needs to be pressed and released to perform the interaction. If this value is equal to or smaller than zero, the input system will use `InputSettings.defaultTapTime` instead.

## Installing Interactions
... [17 more lines]

Web search results for query: "game input "consumed" "consume input" prevent propagation pattern"

No links found.

It seems that search didn't return any results. Let me try a more focused query:

Links: [{"title":"Godot Event Handling","url":"https://gdscript.com/solutions/godot-event-handling/"},{"title":"Unity - Manual: Runtime UI event system and input handling","url":"https://docs.unity3d.com/6000.4/Documentation/Manual/UIE-Runtime-Event-System.html"},{"title":"Unity - Manual: Runtime UI event system","url":"https://docs.unity3d.com/2023.2/Documentation/Manual/UIE-Runtime-Event-System.html"},{"title":"Change unhandled InputEvent propagation · Issue #1058 · godotengine/godot-proposals","url":"https://github.com/godotengine/godot-proposals/issues/1058"},{"title":"\"Consume input\" doesn't work (the input still propagates everywhere) - Programming & Scripting - Epic Developer Community Forums","url":"https://forums.unrealengine.com/t/consume-input-doesnt-work-the-input-still-propagates-everywhere/1213316"},{"title":"Input.Events","url":"https://docs.phaser.io/api-documentation/event/input-events"},{"title":"Handling Player Input","url":"https://ajweeks.com/blog/2019/02/04/InputHandling/"},{"title":"Prevent input from GUI leaking into the game - Godot Forums","url":"https://godotforums.org/d/36127-prevent-input-from-gui-leaking-into-the-game"},{"title":"How to stop keypress event in Input field from propagating to game? - Questions & Answers - Unity Discussions","url":"https://discussions.unity.com/t/how-to-stop-keypress-event-in-input-field-from-propagating-to-game/254703"},{"title":"Event Queue · Decoupling Patterns · Game Programming Patterns","url":"https://gameprogrammingpatterns.com/event-queue.html"}]

Here are the search results for game input consumed/consume input propagation patterns:

## Key Findings

### General Pattern
In order to allow one system to "consume" an event, thereby preventing other systems from also handling it, a callback system can be added for each event type.(no content)When an event is generated, the event caller can iterate over the listeners until one listener consumes it, at which point the propagation stops.

A common implementation uses an `EventReply` enum:
The callback returns `EventReply::CONSUMED` to indicate it handled the event, or `EventReply::UNCONSUMED` to let it propagate further.

### Godot Engine
There are four stages of Event Handling where a node may override the Event Handler Function to consume the Event and possibly set it as being handled to stop it propagating further.(no content)In the handler code you can set the event as handled so that the following `_unhandled_input(event)` method does not respond to it, effectively disabling game-playing control while a popup GUI is being used.(no content)The `_unhandled_input(event)` method is useful for handling game player inputs whose events have not already been set as handled.

### Unity
"Stopping an event's propagation and giving an element focus are distinct actions."(no content)When you click a button, it stops the propagation and allows only the button to react to being pressed, but it doesn't prevent the other default actions for the click.(no content)Other input modules change what input is consumed, but all events still go through the Event System to execute.

### Unreal Engine
In UE5's Enhanced Input configuration, there's a "Consume Input" flag that can be checked on Input Actions, though there are reports of issues where input still propagates despite this setting.

### Phaser
Higher-up event handlers can stop the propagation of this event. Events flow in a specific order with options to halt propagation.

... [5 more lines]

Let me search for a few more details, particularly about analog/axis handling and virtual joystick patterns.

Web search results for query: "game engine input "last input type" "input device changed" keyboard gamepad detection"

No links found.

The search didn't return any results for that specific query. Let me try a broader search to find relevant information:

Links: [{"title":"Enhanced Input - Detect Gamepad vs Keyboard Input - Programming & Scripting - Epic Developer Community Forums","url":"https://forums.unrealengine.com/t/enhanced-input-detect-gamepad-vs-keyboard-input/1231533"},{"title":"Is there a way to detect ANY gamepad/keyboard input? - Programming & Scripting - Epic Developer Community Forums","url":"https://forums.unrealengine.com/t/is-there-a-way-to-detect-any-gamepad-keyboard-input/332020"},{"title":"How to detect whether keyboard/mouse or controller was interacted with last - C++ - Epic Developer Community Forums","url":"https://forums.unrealengine.com/t/how-to-detect-whether-keyboard-mouse-or-controller-was-interacted-with-last/456679"},{"title":"Detect most recent input device/type? - Unity Engine - Unity Discussions","url":"https://discussions.unity.com/t/detect-most-recent-input-device-type/760071"},{"title":"Optimal Way to Detect Input Source (Keyboard vs. Gamepad) in Control Change System - Scripting Support - Developer Forum | Roblox","url":"https://devforum.roblox.com/t/optimal-way-to-detect-input-source-keyboard-vs-gamepad-in-control-change-system/2668440"},{"title":"Switcheroo | Francesco's GameDev Corner","url":"https://minifloppy.it/tools/switcheroo/"},{"title":"How to know if controller or keyboard? - Unity Engine - Unity Discussions","url":"https://discussions.unity.com/t/how-to-know-if-controller-or-keyboard/869718"},{"title":"Detect when device changes and get corresponding control scheme - Unity Engine - Unity Discussions","url":"https://discussions.unity.com/t/detect-when-device-changes-and-get-corresponding-control-scheme/905624"},{"title":"Detecting The Player’s Controller Type With the Unity Input System – Aidan Takami Game Development","url":"https://aidantakami.com/2021/02/02/detecting-the-players-controller-type-with-the-unity-input-system/"},{"title":"Determine currently used device type !? - Unity Engine - Unity Discussions","url":"https://discussions.unity.com/t/determine-currently-used-device-type/824430"}]

Here are the search results for detecting input device changes between keyboard and gamepad in game engines:

## Unreal Engine

In Unreal Engine's Enhanced Input system, developers ask how to detect if the player has pressed a Gamepad key or a Keyboard key at runtime. With the old input system, you could get the key directly from the input event and check "Is Gamepad."(no content)**Switcheroo** is a lightweight plugin for Unreal Engine that makes it easy to detect whether the player is using a gamepad or the keyboard/mouse combo, and react accordingly.(no content)A common use case is making UI screens auto-adjust their contents based on whether the keyboard/mouse or the controller was touched last by the player. For example, an onscreen button might show which gamepad button to press, but when the mouse is moved or keyboard is touched, it changes to show which keyboard key activates it.

## Unity Input System

Developers want to know if the player is using a controller or keyboard so they can change the UI accordingly. For single player games, knowing what device made the last input is often sufficient.(no content)Some recommend using `InputDeviceChange`, but that only detects when devices are being plugged in and out, which doesn't help when you need to know which connected device is actively being used.(no content)If you have `PlayerInput`, you can implement the method `OnControlsChanged()` which will trigger when device has changed, and also the `currentControlScheme` property which will give you the currently active scheme.(no content)One approach is listening to `InputSystem.onDeviceChange`, which must be assigned to a function that takes an `InputDevice` and `InputDeviceChange`. This event will fire off every time a change to device is detected, including when a controller is added, disconnected, removed, or reconnected.(no content)This technique is used for detecting the device type in single player "gamepad" based games, allowing UI to constantly represent the correct "controls" for the type of device the player is using.

## Roblox

Roblox developers also work on control change systems where they need to detect input sources (keyboard vs. gamepad) to allow players to change key bindings for each action.


REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

# Input API Analysis

Based on the provided web page content, I cannot extract specific information about verbs, chords, combos, long holds, double taps, or the API structure you're asking about.

**What the content actually contains:**

The page code is a Docsify documentation configuration file. It includes:

- Documentation setup scripts (title, meta descriptions, sidebar loading)
- Theme customization using CSS variables and hex-to-HSL color conversion
- Version selector functionality for multiple documentation versions
- Navigation and anchor link handling
- Code syntax highlighting and formatting rules

**Why the requested information isn't present:**

The excerpt you provided appears to be from a documentation *framework* rather than the actual API documentation itself. The code handles how documentation is *displayed*, not what it documents. The actual information about input handling (verbs, chords, combos, etc.) would be in separate markdown files loaded by this framework.

To extract the API structure details you need, you would need to provide the actual documentation content files rather than the configuration script.

Let me search for a couple more useful patterns - rebinding/remapping systems and how different engines handle analog vs digital actions.

Web search results for query: "HaxeFlixel FlxAction "FlxActionDigital" "FlxActionAnalog" analog input axis documentation"

Links: [{"title":"Actions | HaxeFlixel - 2D Game Engine","url":"https://haxeflixel.com/documentation/actions/"},{"title":"flixel-docs/documentation/02_handbook/17-actions.html.md at master · HaxeFlixel/flixel-docs","url":"https://github.com/HaxeFlixel/flixel-docs/blob/master/documentation/02_handbook/17-actions.html.md/"},{"title":"flixel.input.actions.FlxActionAnalog - HaxeFlixel API","url":"https://api.haxeflixel.com/flixel/input/actions/FlxActionAnalog.html"},{"title":"flixel/flixel/input/actions/FlxAction.hx at dev · HaxeFlixel/flixel","url":"https://github.com/HaxeFlixel/flixel/blob/dev/flixel/input/actions/FlxAction.hx"},{"title":"flixel.input.actions.FlxAction - HaxeFlixel API","url":"https://api.haxeflixel.com/flixel/input/actions/FlxAction.html"},{"title":"flixel.input.actions.FlxActionDigital - HaxeFlixel API","url":"https://api.haxeflixel.com/flixel/input/actions/FlxActionDigital.html"},{"title":"flixel-controls (0.0.0)","url":"https://lib.haxe.org/p/flixel-controls"},{"title":"flixel.input.actions.FlxActionInput - HaxeFlixel API","url":"https://api.haxeflixel.com/flixel/input/actions/FlxActionInput.html"},{"title":"flixel.input.actions - HaxeFlixel API","url":"https://api.haxeflixel.com/flixel/input/actions/index.html"},{"title":"Cheat Sheet | HaxeFlixel - 2D Game Engine","url":"https://haxeflixel.com/documentation/cheat-sheet/"}]

Here's the documentation for HaxeFlixel's FlxAction system covering FlxActionDigital and FlxActionAnalog for analog input and axis handling:

## Overview

FlxActions come in two varieties: digital and analog. Digital is for on/off actions like "JUMP" and "SHOOT". Analog is for things that need a range of values, like jumping with more or less force, or moving a player or camera around.

## FlxActionDigital

A digital action is a binary on/off event like "jump" or "fire". FlxActions let you attach multiple inputs to a single in-game action, so "jump" could be performed by a keyboard press, a mouse click, or a gamepad button press.

## FlxActionAnalog

Analog actions are events with continuous (floating-point) values, and up to two axes (x,y). This is for events like "move" and "accelerate" where the event is not simply on or off. FlxActions let you attach multiple inputs to a single in-game action, so "move" could be performed by a gamepad joystick, a mouse movement, etc.

### Creating Actions

To create a FlxAction: `var jump = new FlxActionDigital(); var move = new FlxActionAnalog();` You can optionally pass in a name and a callback in the constructor. If you provide a callback, it will fire whenever the action is triggered.

### Analog Axis Options

For FlxActionInputAnalogGamepad, in addition to having to specify the input (left/right stick or left/right trigger), the trigger state, and the gamepad ID, we also have to specify which analog axis we care about (X, Y, EITHER, BOTH).(no content)Note that for single-axis analog inputs, such as analog triggers, only the x value will change and the y value will always be zero.

### Usage Example

Analog actions let you do things like `moveCharacter(MOVE.x, MOVE.y)` or `fireLaserBeam(LASER_INTENSITY.x)`, nicely hiding whatever devices are actually driving the input, and just providing you with the resulting floating point values.(no content)If you are managing FlxActions yourself (as opposed to using the action manager), you will need to update the actions every frame.

... [15 more lines]

Web search results for query: "game input rebinding remapping "key capture" "wait for input" UI options menu implementation"

No links found.

The search didn't return results with that specific query. Let me try a more focused search:

Links: [{"title":"GitHub - andreybicalho/CustomBindings: UE4 - Bind your game inputs to any key.","url":"https://github.com/andreybicalho/CustomBindings"},{"title":"Remapping controls in-game | Adventure Creator","url":"https://adventurecreator.org/tutorials/remapping-controls-game"},{"title":"Master Key Rebinding with Unity","url":"https://www.toolify.ai/ai-news/master-key-rebinding-with-unity-171876"},{"title":"Rebinding Keys At Runtime in Packaged Game - Old UE4 Wiki","url":"https://nerivec.github.io/old-ue4-wiki/pages/rebinding-keys-at-runtime-in-packaged-game.html"},{"title":"Glossary:Remapping - PCGamingWiki PCGW - bugs, fixes, crashes, mods, guides and improvements for every PC game","url":"https://www.pcgamingwiki.com/wiki/Glossary:Remapping"},{"title":"Unity3d","url":"https://docs.unity3d.com/Packages/[email protected]/api/UnityEngine.InputSystem.Samples.RebindUI.RebindActionUI.html"},{"title":"Is there a good rebinding tutorial for new input system? - Unity Engine - Unity Discussions","url":"https://discussions.unity.com/t/is-there-a-good-rebinding-tutorial-for-new-input-system/821267"},{"title":"InControl: Rebinding At Runtime - Gallant Games","url":"https://www.gallantgames.com/pages/incontrol-rebinding-at-runtime"},{"title":"Input Systems Rebind UI sample and advice - Unity Engine - Unity Discussions","url":"https://discussions.unity.com/t/input-systems-rebind-ui-sample-and-advice/853345"},{"title":"Enhanced Input Key Rebinding | Community tutorial","url":"https://dev.epicgames.com/community/learning/tutorials/m6bL/unreal-engine-enhanced-input-key-rebinding"}]

Here are the search results for game input rebinding/remapping UI implementation:

## Unity Input System

Unity provides an optional UI that is activated when an interactive rebind is started and deactivated when the rebind is finished. This is normally used to display an overlay over the current UI while the system is waiting for a control to be actuated.(no content)If neither rebindPrompt nor rebindOverlay is set, the component will temporarily replace the bindingText with "Waiting...".(no content)Once the UI elements are set up, you can implement the logic to start the rebinding process. When the user clicks the button, you want to hide the button UI and show a waiting message. You also need to switch the player's input to a different action map, which effectively pauses the gameplay.(no content)You can use the Input System's RebindingOperation API to perform the rebinding and configure it with the necessary settings. You should also create a method to handle the completion of the rebinding operation and dispose of the operation to prevent memory leaks.

## Unreal Engine

There's a CustomBindings project demonstrating the use of the KeyBindingUtil library for remapping game input keys. It has a very basic UI menu, made with UMG and Blueprints.(no content)KeyBindingUtil is a C++ library, also exposed to Blueprints, that allows you to create the key rebinding/remapping system for your game, useful for creating traditional Settings/Controls menus.(no content)The Victory BP Library provides nodes for rebinding keys at runtime in a packaged game for use with a UMG Key Rebinding menu. The core C++ code modifies ActionMappings, saves key mappings to disk, and rebuilds input.(no content)There's also an Unreal Engine 5.6 tutorial about rebinding Input Actions to new keys using Enhanced Input User Settings.

## InControl (Third-Party Library)

InControl provides BindingListenOptions with settings like IncludeControllers, IncludeMouseButtons, and IncludeKeys to control what input sources are listened for when rebinding.(no content)You can use OnBindingFound callbacks to handle special cases like canceling with Escape: when a binding is found matching Escape, you can call action.StopListeningForBinding() and return false.


REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

Let me get a few more pieces of information about useful patterns for input systems - specifically about any_key pressed detection, text input, and perhaps some useful API patterns.

Web search results for query: "game input system "any key" "any button" pressed detection API pattern"

Links: [{"title":"How can I know that any button on gamepad is pressed? - Unity Engine - Unity Discussions","url":"https://discussions.unity.com/t/how-can-i-know-that-any-button-on-gamepad-is-pressed/761026"},{"title":"How can I know that any button on gamepad is pressed? - Unity Engine - Unity Discussions","url":"https://forum.unity.com/threads/how-can-i-know-that-any-button-on-gamepad-is-pressed.757322/"}]

Here are the search results for your query:

## Game Input System "Any Key/Any Button" Detection API Patterns

The search results focus primarily on Unity's input system:

### Unity Input System

To know if any keyboard key is pressed, you can use `Keyboard.current.anyKey.isPressed`, but there is no function like this in `Gamepad.current`.(no content)This presents a common challenge: how to detect if any button is pressed on the current gamepad.

The results indicate this is a frequently asked question in game development, particularly when trying to implement "Press any key to continue" functionality that works across both keyboards and gamepads.

---

The search returned limited results (only 2 Unity forum discussions from 2019). Would you like me to perform additional searches with different terms to find more comprehensive information on this topic? For example, I could search for:
- Specific game engines (Unreal, Godot)
- Platform-specific APIs (SDL, XInput)
- More general input handling patterns


REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

Web search results for query: "p5play "kb" "mouse" "contros" input API pressed releasing documentation"

Links: [{"title":"p5play : Input","url":"https://p5play.org/learn/input.html"},{"title":"_Contros - Documentation","url":"https://p5play.org/docs/-_Contros.html"},{"title":"InputDevice - Documentation","url":"https://p5play.org/docs/InputDevice.html"},{"title":"P5play","url":"https://p5play.org/learn/input_devices"},{"title":"_Mouse - Documentation","url":"https://p5play.org/docs/-_Mouse.html"},{"title":"lib/p5.play.js - Code.org p5.play","url":"https://code-dot-org.github.io/p5.play/docs/files/lib_p5.play.js.html"},{"title":"Documentation - p5play | CodeHS","url":"https://codehs.com/documentation/new/p5-play"},{"title":"Input — p5 0.8.1 documentation","url":"https://p5.readthedocs.io/en/latest/reference/input.html"},{"title":"Input - Happy Coding","url":"https://happycoding.io/tutorials/p5js/input"},{"title":"p5.play - Code.org p5.play","url":"https://code-dot-org.github.io/p5.play/docs/classes/p5.play.html"}]

Based on the search results, here's the documentation for p5play's input API:

## p5play Input API

### Input Devices
p5play provides these input devices: `kb` / `keyboard` for the keyboard, `mouse` for the mouse, `contros` / `controllers` for game controllers, and `touches` for touch screen inputs. These input devices all use the same simple functions for getting the state of an input: `presses`, `pressing`, and `released`.

### Input State Values
The input state values work as follows:
- -3 means input was pressed and released on the same frame
- -2 means input was released after being held
- -1 means input was released
- 0 means input is not pressed
- 1 means input was pressed
- >1 means input is still being pressed

### Keyboard (`kb`)
Input devices store the state of all their inputs as properties. For example, `kb.space` stores how many frames the user has been pressing the space key. It gets reset when the user releases the input.(no content)`kb` tracks nearly every key on the keyboard, including 'enter', 'backspace', and 'control'. Note that letter input is not case sensitive.(no content)To check if a user is pressing shift use: `kb.pressing('shift')`.(no content)Since the WASD keys are commonly used to control the player character's movement, you can use the direction names 'up', 'down', 'left', and 'right' to detect WASD and arrow key presses. Arrow keys can also be detected separately using 'arrowUp', 'arrowDown', 'arrowLeft', and 'arrowRight'.(no content)In local two player games it's common for the second player to use the IJKL keys for movement. These keys can be referenced using 'up2', 'down2', 'left2', and 'right2'.

### Mouse
The default mouse input is the 'left' button, a one finger click on trackpads. You can also use 'right' (two finger click) and 'center'.(no content)mouse.x and mouse.y store the position of the mouse in the world, based on the camera's position.(no content)Note that `mouse.x` is the x position of the mouse on the canvas and `sprite.mouse.x` is the x position of the mouse relative to the sprite.

### Controllers (`contros`)
The `contros` array (aka controllers) contains an object for each game controller detected by your web browser.(no content)Each controller object stores the input states of these buttons: a, b, x, y, l (left bumper), r (right bumper), lt (left trigger), rt (right trigger), up, down, left, right (D-pad), lsb (left stick button), rsb (right stick button), start, and select. `leftStick` and `rightStick` represent the positions of the analog sticks as objects with x and y properties. These values range from -1 to 1, with 0 indicating the center position.(no content)Some controllers have analog triggers, and their positions are stored as numbers ranging from 0 to 1 in `leftTrigger` and `rightTrigger`.

### Sprite Mouse Detection
... [4 more lines]

Now I have a comprehensive picture. Let me compile all this information into a thorough analysis document. I'll create a markdown file in the reference folder with all the patterns, insights, and recommendations.

File created successfully at: E:\a327ex\Anchor\reference\input-system-research.md

Now let me open this in NeoVim with markdown preview as the CLAUDE.md instructions suggest for long responses with code.

Command running in background with ID: b4d0336. Output is being written to: C:\Users\adn\AppData\Local\Temp\claude\E--a327ex-Anchor\tasks\b4d0336.output

I've created a comprehensive research document. Let me now provide a summary to the user of the key findings and recommendations.

The user wants me to explain get_axis and get_vector more clearly. Let me break this down with concrete examples.

The user is asking about how hold duration / long press detection actually works in other engines. Let me think about this...

From my research, Unity has "Interactions" like HoldInteraction which triggers the action only AFTER holding for N seconds. So it's not "check if held for X seconds" but rather "this action fires when held for X seconds."

So there are two different patterns:

1. **Query-based**: You call `get_hold_duration(action)` and check yourself: `if get_hold_duration('shoot') > 1.0 then charge_attack() end`

2. **Event/trigger-based**: You define a "hold" interaction on an action, and it only fires `is_pressed` after the hold duration is met. Unity does this.

The Unity approach is more like:
- `TapInteraction` - action triggers only if pressed AND released within duration (quick tap)
- `HoldInteraction` - action triggers only after being held for duration
- `SlowTapInteraction` - action triggers when released after holding for minimum duration
- `MultiTapInteraction` - action triggers after N taps within time window

So in Unity, you'd configure "charge_attack" action with a HoldInteraction of 1 second, and then `is_pressed('charge_attack')` would only be true on the frame where you've held it for 1 second.

This is different from just querying hold duration. It's more declarative - you define the interaction type upfront.

The GameMaker Input library also has this kind of thing built in - you can check for "long holds" directly.

Let me explain both approaches to the user.

The user is asking about items 4 (input type detection) and 5 (rebinding capture mode) which I mentioned had callbacks. They want to see examples of how these would be used to evaluate if locality is maintained.

Let me think about the use cases:

**Input type detection (4):**
The callback version:
```lua
input_on_type_changed(function(new_type)
    update_ui_prompts(new_type)
end)
```

The polling version:
```lua
-- In update
local input_type = input_get_last_type()
if input_type ~= self.last_input_type then
    self.last_input_type = input_type
    update_ui_prompts(input_type)
end
```

Or just query when needed:
```lua
-- When drawing UI
local type = input_get_last_type()
if type == 'gamepad' then
    draw_button_prompt('A')
else
    draw_button_prompt('Space')
end
```

**Rebinding capture mode (5):**
The callback version:
```lua
input_start_capture(function(control)
    input_bind('jump', {control})
    close_rebind_ui()
end)
```

The polling version:
```lua
-- Start capture
input_start_capture()
self.waiting_for_rebind = true

-- In update
if self.waiting_for_rebind then
    local captured = input_get_captured()
    if captured then
        input_bind('jump', {captured})
        input_stop_capture()
        self.waiting_for_rebind = false
        close_rebind_ui()
    end
end
```

The polling version keeps all the logic in one place (the update function of the rebind UI object), while the callback version splits the logic between where you start capture and the callback itself.

Let me show these examples to the user.

The user wants me to explain the rebinding/capture logic more clearly. Let me break it down step by step.

The scenario is: You have an options menu where the player can rebind controls. They click on "Jump: [Space]" and then press a new key, and now Jump is bound to that new key.

The problem is: normally your input system is processing all input as game actions. But when rebinding, you need to capture the raw input (which key was pressed) rather than triggering game actions.

So "capture mode" is a special state where:
1. Normal action processing is paused/ignored
2. The system waits for any key/button press
3. When something is pressed, it records what it was
4. You can then query what was captured and use it for rebinding

Let me explain this more clearly to the user with a concrete walkthrough.

The user wants the full API list. Let me compile everything we've discussed:

1. Get axis / get vector helpers
2. Hold duration via input_bind_hold (interaction-based, not query-based)
3. Sequences (already had this)
4. Input type detection (polling-based)
5. Rebinding capture (polling-based)
6. Chords
7. Any key / any button

Plus the base API we already had. Let me compile the complete list.

The user is right, I forgot to include input_bind_chord for chords (multiple buttons pressed together). Let me add that to the API.

The user is asking why we need separate is_sequence_pressed/down/released functions instead of just using is_pressed/is_down/is_released with the sequence name.

Looking back at the original sequence implementation from the Castle project, the sequence functions were separate:
- is_sequence_pressed(...)
- is_sequence_down(...)
- is_sequence_released(...)

But if we're using input_bind_sequence to register a named sequence upfront, then conceptually the sequence becomes just another "action" that can be queried with is_pressed/is_down/is_released.

The question is: should sequences (and holds and chords) be in the same namespace as regular actions, so you can just use is_pressed('dash') whether 'dash' is a regular action, a sequence, a hold, or a chord?

That would be cleaner - fewer functions, more unified API. The internal implementation would check "is this a regular action, a sequence, a hold, or a chord?" and handle accordingly.

So the answer is: No, they're not necessary if sequences/holds/chords are in the same namespace as actions. You'd just use:
- is_pressed('dash') - works for action, sequence, hold, or chord
- is_down('dash') - same
- is_released('dash') - same

This is simpler and more elegant.

The user is asking if I found any engines using the sequence concept similar to their implementation - where you define a sequence of inputs with timing windows between them, like fighting game combos.

Looking back at my research:

1. **Unity** - Has MultiTapInteraction for double-tap/triple-tap, but that's just repeated presses of the SAME button, not sequences of different buttons.

2. **GameMaker Input Library** - Mentioned "combos" but I didn't get deep details on how they work.

3. **libGDX** - GestureDetector for tap/double-tap, but again same button.

4. **The user's own sequence system** - Allows different actions in sequence with timing: `{'action_1', 0.5, 'action_2'}` - press action_1, then action_2 within 0.5 seconds.

Actually, I didn't find any engine that does exactly what the user's sequence system does - which is arbitrary sequences of DIFFERENT actions with timing windows between them. The closest things were:

- Unity's MultiTapInteraction: same button multiple times
- Fighting game input systems: but those are usually custom implementations, not built into general engines

This is actually a distinctive feature of the user's system. Most engines only handle:
- Double-tap (same button twice)
- Long press / hold
- Chords (multiple buttons at once)

But not: "press A, then within X seconds press B, then within Y seconds press C" which is what the user's sequence system allows.

I should be honest that I didn't find this pattern in the mainstream engines I researched. It's more of a fighting game / action game specific feature that developers usually implement themselves.

The user wants me to update the ANCHOR_IMPLEMENTATION_PLAN.md file to reflect our decisions about the input system API. I need to:

1. Read the current implementation plan
2. Update Phase 5 (Input) with the new API we've designed
3. Partition the implementation logically so each function can be tested individually

Let me read the current plan first.

1→# Anchor Implementation Plan
     2→
     3→C engine with YueScript scripting, OpenGL rendering, targeting Windows and Web.
     4→
     5→---
     6→
     7→## Summary of Key Decisions
     8→
     9→| Area | Decision | Rationale |
    10→|------|----------|-----------|
    11→| Renderer | OpenGL | Smooth rotation, additive blending, performance headroom, console-portable |
    12→| Audio | TBD (miniaudio or SoLoud) | Need pitch shifting; SDL_mixer insufficient |
    13→| Physics | Box2D 3.1 | Already used, true ball-to-ball collisions needed |
    14→| Scripting | Lua 5.4 + YueScript | Build-time compilation with `-r` flag for line numbers |
    15→| Timestep | Fixed 120Hz physics, 60Hz render | Decoupled for pixel-perfect visuals with responsive input |
    16→| Resolution | Per-game configurable | 480×270, 640×360, or custom; aspect-ratio scaling with letterboxing |
    17→| C Structure | Single anchor.c | Monolithic file, easier navigation |
    18→| Resources | Live forever | Games are small enough; no unloading needed |
    19→| Linking | Static | No DLLs; SDL2, Lua, audio all compiled in |
    20→| Distribution | Single executable | Zip-append for game content, extractable by modders |
    21→
    22→---
    23→
    24→## Build Strategy
    25→
    26→### YueScript Compilation
    27→
    28→**Build-time compilation** — compile `.yue` → `.lua` during build, not at runtime.
    29→
    30→```
... [854 more lines]

Now I need to update Phase 5 to reflect our new API. Let me rewrite it with logical partitioning so each function can be tested individually.

The API we agreed on:

**Binding/Configuration:**
- input_bind(action, controls)
- input_unbind(action, control)
- input_unbind_all(action)
- input_bind_all()
- input_bind_chord(name, actions)
- input_bind_sequence(name, sequence)
- input_bind_hold(name, duration, action)
- input_set_deadzone(value)

**Queries (work for actions, chords, sequences, holds):**
- is_pressed(name)
- is_down(name)
- is_released(name)

**Axis Helpers:**
- input_get_axis(negative, positive)
- input_get_vector(left, right, up, down)

**Mouse:**
- mouse_position()
- mouse_delta()
- mouse_set_visible(bool)
- mouse_set_grabbed(bool)

**Gamepad:**
- gamepad_is_connected()
- gamepad_get_axis(axis)

**Input Type Detection:**
- input_get_last_type()

**Rebinding Capture:**
- input_start_capture()
- input_get_captured()
- input_stop_capture()

**Raw Queries:**
- key_is_pressed(key)
- key_is_down(key)
- key_is_released(key)

**Utility:**
- input_any_pressed()

Let me partition these logically for testing:

Step 1: Raw keyboard state tracking
- Internal state tracking (current/previous)
- key_is_pressed, key_is_down, key_is_released

Step 2: Mouse state
- mouse_position, mouse_delta
- mouse_set_visible, mouse_set_grabbed


Step 3: Basic action binding
I'll focus on implementing core action mechanics. This involves creating a robust system for binding individual actions and checking their states. The key functions will enable mapping controls to specific actions and querying their current input status. I'll ensure each action can be precisely tracked and responded to in real-time.

Step 4: Unbinding mechanisms
The unbinding process requires careful implementation. I'll design methods to remove specific control mappings or reset entire action configurations. This provides flexibility for dynamic input reconfiguration during runtime.

Step 5: Axis manipulation
Developing axis helpers involves creating nuanced input translation. I'll implement functions that convert raw input into normalized directional values, supporting complex movement and aiming mechanics across different input types.

Step 6: Gamepad integration
Gamepad support demands a flexible approach. I'll create detection and axis reading capabilities that work seamlessly across different controller types, with configurable deadzone settings to ensure precise input handling.

Step 7: Chord handling
Chord implementation requires tracking multiple simultaneous inputs. I'll design a system that can recognize complex input combinations reliably and consistently across different input scenarios.

Step 8: Sequence tracking
Sequence binding needs a sophisticated state machine that can recognize precise input orders and timings, enabling complex gesture and command input methods.

I'll continue tracking input sequences, allowing intricate multi-step input recognition that supports advanced control schemes.

The file E:\a327ex\Anchor\docs\ANCHOR_IMPLEMENTATION_PLAN.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   457→**Deliverable:** Post-processing effects (outline, shadow) and per-object flash. ✓ Complete
   458→
   459→---
   460→
   461→## Phase 5: Input
   462→
   463→**Goal:** Action-based input system with keyboard, mouse, and gamepad support. Includes advanced features: chords, sequences, holds, input type detection, and rebinding capture.
   464→
   465→See `reference/input-system-research.md` for research on input systems across 17+ game engines.
   466→
   467→---
   468→
   469→### Architecture Overview
   470→
   471→**Action-based input:** Physical inputs (keys, buttons) map to named actions. Game code queries actions, not raw keys.
   472→
   473→**Control string format:** `type:key` — e.g., `'key:space'`, `'mouse:1'`, `'button:a'`, `'axis:leftx+'`
   474→
   475→**Unified query system:** Actions, chords, sequences, and holds all use the same `is_pressed`/`is_down`/`is_released` functions.
   476→
   477→**Edge detection:** Standard previous/current frame comparison for pressed (just this frame) and released (just this frame).
   478→
   479→---
   480→
   481→### Implementation Steps
   482→
   483→**Step 1: Raw keyboard state**
   484→- [ ] Internal state arrays: `keys_current[NUM_KEYS]`, `keys_previous[NUM_KEYS]`
   485→- [ ] SDL event handling: `SDL_KEYDOWN`, `SDL_KEYUP` update `keys_current`
... [175 more lines]

I've updated the implementation plan with the full Phase 5 input system we discussed. The plan now has 12 logical steps, each testable individually.

Let me also update the Phase Summary table to reflect the expanded scope and update the Gamepad Support section in Deferred Features since we're now including it in Phase 5.

The file E:\a327ex\Anchor\docs\ANCHOR_IMPLEMENTATION_PLAN.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   961→| 1 | C Skeleton | OpenGL window + Lua + error handling |
   962→| 2 | Web Build | Emscripten/WebGL parity |
   963→| 3 | Rendering | Shapes, sprites, layers, blend modes |
   964→| 4 | Effects | Post-process shaders (outline, shadow) + per-object flash |
   965→| 5 | Input | Actions, chords, sequences, holds, gamepad, rebinding |
   966→| 6 | Audio | Sound/music with pitch shifting |
   967→| 7 | Physics | Box2D 3.1 with events and queries |
   968→| 8 | Random | Seedable PRNG with replay support |
   969→| 9 | Text | Bitmap + TTF fonts, glyph rendering |

Now let me update the Deferred Features section to remove Gamepad since it's now part of Phase 5.

The file E:\a327ex\Anchor\docs\ANCHOR_IMPLEMENTATION_PLAN.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   997→SDL2 gamepad API is straightforward when needed.
   998→
   999→---
  1000→
  1001→## Deferred Features
  1002→
  1003→Not implementing now, add later if needed:
  1004→
  1005→- **Steam Input** — Steam release prep (beyond basic gamepad)
  1006→- **Hot reloading** — nice for iteration but not essential
  1007→- **Debug console/inspector** — print debugging is sufficient
  1008→- **Advanced audio effects** — reverb, filters (after basic audio works)
  1009→- **Save/load system** — core gameplay first
  1010→- **Networking** — too early to consider
  1011→- **Full UI system** — existing layout system sufficient for now
  1012→
  1013→---
  1014→
  1015→## Technical Notes

I should also remove the Gamepad Support section from Open Decisions since it's now part of Phase 5.

The file E:\a327ex\Anchor\docs\ANCHOR_IMPLEMENTATION_PLAN.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   990→- Instanced particle renderer in C
   991→- Particle pools
   992→- GPU particle system
   993→
   994→## Deferred Features
   995→
   996→Not implementing now, add later if needed:
   997→
   998→- **Steam Input** — Steam release prep (beyond basic gamepad)

I also need to add a missing `---` separator before "## Deferred Features" since I removed it. Let me check the context and fix that.

The file E:\a327ex\Anchor\docs\ANCHOR_IMPLEMENTATION_PLAN.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   988→
   989→If object-based particles become slow for dense effects (hundreds/thousands), consider:
   990→- Instanced particle renderer in C
   991→- Particle pools
   992→- GPU particle system
   993→
   994→---
   995→
   996→## Deferred Features
   997→
   998→Not implementing now, add later if needed:
   999→
  1000→- **Steam Input** — Steam release prep (beyond basic gamepad)

Good, now the implementation plan is updated. Let me provide a summary to the user.

[?2026h[?2026l[?2026h[?2026l[?2026h [1mContext Usage[22m
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[38;2;147;51;234m⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ [39m  [38;2;136;136;136m⛁[39m System prompt: [38;2;153;153;153m2.9k tokens (1.5%)[39m
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[38;2;147;51;234m⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ [39m  [38;2;147;51;234m⛁[39m Messages: [38;2;153;153;153m102.6k tokens (51.3%)[39m
[38;2;147;51;234m⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ [39m  [38;2;153;153;153m⛶[39m Free space: [38;2;153;153;153m33k (16.7%)[39m
[38;2;153;153;153m⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ [39m  [38;2;153;153;153m⛝ Autocompact buffer: 45.0k tokens (22.5%)[39m
[38;2;153;153;153m⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛝ ⛝ ⛝ [39m
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[1mMemory files[22m[38;2;153;153;153m · /memory[39m
└ C:\Users\adn\.claude\CLAUDE.md: [38;2;153;153;153m183 tokens[39m
└ .claude\CLAUDE.md: [38;2;153;153;153m1.0k tokens[39m
[?2026l

The user wants to start implementing Step 1: Raw keyboard state. Let me read the current anchor.c to understand where to add the input system code, then implement the raw keyboard state tracking with the three Lua-exposed functions: key_is_down, key_is_pressed, key_is_released.

1→/*
     2→ * Anchor Engine
     3→ * Phase 1: Window + OpenGL + Lua integration
     4→ * Phase 2: Web build (Emscripten/WebGL)
     5→ * Phase 3: Rendering (layers, shapes, sprites, transforms, blend modes)
     6→ */
     7→
     8→#include <stdio.h>
     9→#include <stdlib.h>
    10→#include <stdbool.h>
    11→#include <string.h>
    12→#include <math.h>
    13→
    14→#ifdef _WIN32
    15→#include <direct.h>  // _chdir
    16→#else
    17→#include <unistd.h>  // chdir
    18→#endif
    19→
    20→#include <SDL.h>
    21→
    22→#ifdef __EMSCRIPTEN__
    23→    #include <emscripten.h>
    24→    #include <emscripten/html5.h>
    25→    #include <GLES3/gl3.h>
    26→#else
    27→    #include <glad/gl.h>
    28→#endif
    29→
    30→#include <lua.h>
... [170 more lines]

Let me continue reading the anchor.c file to find where the main loop is and where I should add the input handling code.

- [in_progress] Step 1: Raw keyboard state
- [pending] Step 2: Mouse state
- [pending] Step 3: Basic action binding
- [pending] Step 4: Unbinding and bind_all
- [pending] Step 5: Axis helpers
- [pending] Step 6: Gamepad support
- [pending] Step 7: Chords
- [pending] Step 8: Sequences
- [pending] Step 9: Holds
- [pending] Step 10: Input type detection
- [pending] Step 11: Rebinding capture
- [pending] Step 12: Utility functions

Let me continue reading the file to find the main loop and event handling code.

1596:static void main_loop_iteration(void) {
1633:    SDL_Event event;
1638:        if (event.type == SDL_KEYDOWN) {
2039:    emscripten_set_main_loop(main_loop_iteration, 0, 1);
2043:        main_loop_iteration();

Found the main loop. Let me read around line 1596 to see the current event handling and where to add input state tracking.

1590→    if (gl_context) { SDL_GL_DeleteContext(gl_context); gl_context = NULL; }
  1591→    if (window) { SDL_DestroyWindow(window); window = NULL; }
  1592→    SDL_Quit();
  1593→}
  1594→
  1595→// One frame of the main loop
  1596→static void main_loop_iteration(void) {
  1597→    Uint64 current_time = SDL_GetPerformanceCounter();
  1598→    double dt = (double)(current_time - last_time) / (double)perf_freq;
  1599→    last_time = current_time;
  1600→
  1601→    // Clamp delta time to handle anomalies (pauses, debugger, sleep resume)
  1602→    if (dt > PHYSICS_RATE * MAX_UPDATES) {
  1603→        dt = PHYSICS_RATE;
  1604→    }
  1605→    if (dt < 0) {
  1606→        dt = 0;
  1607→    }
  1608→
  1609→    // VSync snapping: if dt is close to a known refresh rate, snap to it exactly
  1610→    // This prevents accumulator drift from timer jitter
  1611→    for (int i = 0; i < snap_frequency_count; i++) {
  1612→        double diff = dt - snap_frequencies[i];
  1613→        if (diff < 0) diff = -diff;
  1614→        if (diff < VSYNC_SNAP_TOLERANCE) {
  1615→            dt = snap_frequencies[i];
  1616→            break;
  1617→        }
  1618→    }
  1619→
... [120 more lines]

I see the structure now. The main loop has:
1. Event polling (lines 1633-1657)
2. Fixed timestep update loop (lines 1659-1689)
3. Render phase (lines 1691+)

For input, I need to:
1. Add input state arrays before the main loop
2. Update input state when processing SDL events
3. At end of each physics frame, copy current to previous
4. Add Lua binding functions for key_is_down, key_is_pressed, key_is_released

Let me also check where the Lua bindings are registered to understand the pattern.

1229-static void register_lua_bindings(lua_State* L) {
1230:    lua_register(L, "layer_create", l_layer_create);
1231:    lua_register(L, "layer_rectangle", l_layer_rectangle);
1232:    lua_register(L, "layer_circle", l_layer_circle);
1233:    lua_register(L, "layer_push", l_layer_push);
1234:    lua_register(L, "layer_pop", l_layer_pop);
1235:    lua_register(L, "layer_draw_texture", l_layer_draw_texture);
1236:    lua_register(L, "layer_set_blend_mode", l_layer_set_blend_mode);
1237:    lua_register(L, "texture_load", l_texture_load);
1238:    lua_register(L, "texture_get_width", l_texture_get_width);
1239:    lua_register(L, "texture_get_height", l_texture_get_height);
1240:    lua_register(L, "rgba", l_rgba);
1241:    lua_register(L, "set_shape_filter", l_set_shape_filter);
1242:    lua_register(L, "timing_resync", l_timing_resync);
1243-    // Effect shaders
1244:    lua_register(L, "shader_load_file", l_shader_load_file);
1245:    lua_register(L, "shader_load_string", l_shader_load_string);
1246:    lua_register(L, "shader_destroy", l_shader_destroy);
1247-    // Layer shader uniforms (deferred)
1248:    lua_register(L, "layer_shader_set_float", l_layer_shader_set_float);
1249:    lua_register(L, "layer_shader_set_vec2", l_layer_shader_set_vec2);
1250:    lua_register(L, "layer_shader_set_vec4", l_layer_shader_set_vec4);
1251:    lua_register(L, "layer_shader_set_int", l_layer_shader_set_int);
1252-    // Layer effects
1253:    lua_register(L, "layer_apply_shader", l_layer_apply_shader);
1254:    lua_register(L, "layer_draw", l_layer_draw);
1255:    lua_register(L, "layer_get_texture", l_layer_get_texture);
1256:    lua_register(L, "layer_reset_effects", l_layer_reset_effects);
1257-}

Good, I see the pattern for registering Lua bindings. Now let me find where to add the input state data structures. I'll add them near the other global state (probably near the layer registry).

522:static bool error_state = false;
532:static Layer* layer_registry[MAX_LAYERS];
972:            return layer_registry[i];
989:    layer_registry[layer_count] = layer;
1260:static bool running = true;
1578:        layer_destroy(layer_registry[i]);
1580:        layer_registry[i] = NULL;
1636:            running = false;
1640:                running = false;
1663:            layer_clear_commands(layer_registry[i]);
1667:        if (!error_state) {
1677:                    error_state = true;
1718:            Layer* layer = layer_registry[i];
1722:            if (error_state) {
1789:                layer_reset_effects(layer_registry[i]);
1799:                Layer* layer = layer_registry[i];
1816:    if (!running) {
2002:        error_state = true;
2007:        error_state = true;
2042:    while (running) {

[Showing results with pagination = limit: 20, offset: 0]

Good, I see that the global state is around lines 520-540 and line 1260. Let me read that section to understand the full state layout.

515→    batch_add_vertex(x2, y2, 1.0f, 1.0f, r, g, b, a, type, s0, s1, s2, s3, addR, addG, addB);
   516→    batch_add_vertex(x3, y3, 0.0f, 1.0f, r, g, b, a, type, s0, s1, s2, s3, addR, addG, addB);
   517→}
   518→
   519→static SDL_Window* window = NULL;
   520→static SDL_GLContext gl_context = NULL;
   521→static lua_State* L = NULL;
   522→static bool error_state = false;
   523→static char error_message[4096] = {0};
   524→
   525→// Rendering state
   526→static GLuint shader_program = 0;
   527→static GLuint vao = 0;
   528→static GLuint vbo = 0;
   529→
   530→// Layer registry
   531→#define MAX_LAYERS 16
   532→static Layer* layer_registry[MAX_LAYERS];
   533→static char* layer_names[MAX_LAYERS];
   534→static int layer_count = 0;
   535→
   536→// Screen blit resources
   537→static GLuint screen_shader = 0;
   538→static GLuint screen_vao = 0;
   539→static GLuint screen_vbo = 0;
   540→
   541→// Manual layer compositing queue
   542→typedef struct {
   543→    Layer* layer;
   544→    float x, y;  // Offset in game coordinates
... [20 more lines]

Good, I can see the structure. I'll add the input state after the layer registry section (around line 549). Now let me also check SDL_NUM_SCANCODES to understand how many keys we need to track.

Actually, SDL_NUM_SCANCODES is a standard constant from SDL. It's typically 512 or so keys. Let me implement the input system now.

I need to:
1. Add input state arrays near the other global state (~line 550)
2. Add the input handling in the event loop (update keys_current)
3. Add the end-of-frame copy of current to previous (after physics update)
4. Add Lua binding functions for key_is_pressed, key_is_down, key_is_released
5. Add a function to convert key name strings to SDL scancodes
6. Register the bindings

Let me create the implementation now.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   543→    Layer* layer;
   544→    float x, y;  // Offset in game coordinates
   545→} LayerDrawCommand;
   546→
   547→#define MAX_LAYER_DRAWS 64
   548→static LayerDrawCommand layer_draw_queue[MAX_LAYER_DRAWS];
   549→static int layer_draw_count = 0;
   550→
   551→// Input state
   552→static bool keys_current[SDL_NUM_SCANCODES] = {0};
   553→static bool keys_previous[SDL_NUM_SCANCODES] = {0};
   554→
   555→// Convert key name string to SDL scancode
   556→static SDL_Scancode key_name_to_scancode(const char* name) {
   557→    if (!name) return SDL_SCANCODE_UNKNOWN;
   558→
   559→    // Single character keys (a-z, 0-9)
   560→    if (strlen(name) == 1) {
   561→        char c = name[0];
   562→        if (c >= 'a' && c <= 'z') return SDL_SCANCODE_A + (c - 'a');
   563→        if (c >= 'A' && c <= 'Z') return SDL_SCANCODE_A + (c - 'A');
   564→        if (c >= '0' && c <= '9') return SDL_SCANCODE_0 + (c - '0');
   565→    }
   566→
   567→    // Named keys
   568→    if (strcmp(name, "space") == 0) return SDL_SCANCODE_SPACE;
   569→    if (strcmp(name, "enter") == 0 || strcmp(name, "return") == 0) return SDL_SCANCODE_RETURN;
   570→    if (strcmp(name, "escape") == 0 || strcmp(name, "esc") == 0) return SDL_SCANCODE_ESCAPE;
   571→    if (strcmp(name, "backspace") == 0) return SDL_SCANCODE_BACKSPACE;
... [84 more lines]

Good, now I need to:
1. Add the Lua binding functions (l_key_is_pressed, l_key_is_down, l_key_is_released)
2. Update the SDL event handling to set keys_current
3. Call input_post_update at the end of the physics loop
4. Register the bindings

Let me find where the Lua binding functions are defined (around line 1229 based on earlier search).

1300→}
  1301→
  1302→// Layer effect Lua bindings
  1303→static int l_layer_apply_shader(lua_State* L) {
  1304→    Layer* layer = (Layer*)lua_touserdata(L, 1);
  1305→    GLuint shader = (GLuint)luaL_checkinteger(L, 2);
  1306→    layer_apply_shader(layer, shader);
  1307→    return 0;
  1308→}
  1309→
  1310→static int l_layer_draw(lua_State* L) {
  1311→    Layer* layer = (Layer*)lua_touserdata(L, 1);
  1312→    float x = (lua_gettop(L) >= 2) ? (float)luaL_checknumber(L, 2) : 0.0f;
  1313→    float y = (lua_gettop(L) >= 3) ? (float)luaL_checknumber(L, 3) : 0.0f;
  1314→    layer_queue_draw(layer, x, y);
  1315→    return 0;
  1316→}
  1317→
  1318→static int l_layer_get_texture(lua_State* L) {
  1319→    Layer* layer = (Layer*)lua_touserdata(L, 1);
  1320→    GLuint tex = layer_get_texture(layer);
  1321→    lua_pushinteger(L, (lua_Integer)tex);
  1322→    return 1;
  1323→}
  1324→
  1325→static int l_layer_reset_effects(lua_State* L) {
  1326→    Layer* layer = (Layer*)lua_touserdata(L, 1);
  1327→    layer_reset_effects(layer);
  1328→    return 0;
  1329→}
... [70 more lines]

I see where to add the Lua binding functions. I'll add them just before `register_lua_bindings` (around line 1329), and then register them in `register_lua_bindings`.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1321→    lua_pushinteger(L, (lua_Integer)tex);
  1322→    return 1;
  1323→}
  1324→
  1325→static int l_layer_reset_effects(lua_State* L) {
  1326→    Layer* layer = (Layer*)lua_touserdata(L, 1);
  1327→    layer_reset_effects(layer);
  1328→    return 0;
  1329→}
  1330→
  1331→// Input Lua bindings
  1332→static int l_key_is_down(lua_State* L) {
  1333→    const char* key_name = luaL_checkstring(L, 1);
  1334→    SDL_Scancode scancode = key_name_to_scancode(key_name);
  1335→    if (scancode == SDL_SCANCODE_UNKNOWN) {
  1336→        lua_pushboolean(L, 0);
  1337→    } else {
  1338→        lua_pushboolean(L, keys_current[scancode]);
  1339→    }
  1340→    return 1;
  1341→}
  1342→
  1343→static int l_key_is_pressed(lua_State* L) {
  1344→    const char* key_name = luaL_checkstring(L, 1);
  1345→    SDL_Scancode scancode = key_name_to_scancode(key_name);
  1346→    if (scancode == SDL_SCANCODE_UNKNOWN) {
  1347→        lua_pushboolean(L, 0);
  1348→    } else {
  1349→        lua_pushboolean(L, keys_current[scancode] && !keys_previous[scancode]);
... [20 more lines]

Good. Now I need to:
1. Register the bindings in register_lua_bindings
2. Update SDL event handling to set keys_current
3. Call input_post_update at end of physics loop

Let me first add the registration.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1385→    lua_register(L, "layer_shader_set_vec2", l_layer_shader_set_vec2);
  1386→    lua_register(L, "layer_shader_set_vec4", l_layer_shader_set_vec4);
  1387→    lua_register(L, "layer_shader_set_int", l_layer_shader_set_int);
  1388→    // Layer effects
  1389→    lua_register(L, "layer_apply_shader", l_layer_apply_shader);
  1390→    lua_register(L, "layer_draw", l_layer_draw);
  1391→    lua_register(L, "layer_get_texture", l_layer_get_texture);
  1392→    lua_register(L, "layer_reset_effects", l_layer_reset_effects);
  1393→    // Input
  1394→    lua_register(L, "key_is_down", l_key_is_down);
  1395→    lua_register(L, "key_is_pressed", l_key_is_pressed);
  1396→    lua_register(L, "key_is_released", l_key_is_released);
  1397→}
  1398→
  1399→// Main loop state (needed for emscripten)
  1400→static bool running = true;
  1401→static Uint64 perf_freq = 0;

Good. Now I need to:
1. Update the SDL event handling to set keys_current when keydown/keyup events occur
2. Call input_post_update at the end of the physics loop

Let me find the event handling code again and update it.

1760→    // Accumulate physics lag, capped to prevent spiral of death
  1761→    physics_lag += dt;
  1762→    if (physics_lag > PHYSICS_RATE * MAX_UPDATES) {
  1763→        physics_lag = PHYSICS_RATE * MAX_UPDATES;
  1764→    }
  1765→
  1766→    // Accumulate render lag, capped to prevent unbounded growth
  1767→    render_lag += dt;
  1768→    if (render_lag > RENDER_RATE * 2) {
  1769→        render_lag = RENDER_RATE * 2;
  1770→    }
  1771→
  1772→    // Process events every frame (not tied to fixed timestep)
  1773→    SDL_Event event;
  1774→    while (SDL_PollEvent(&event)) {
  1775→        if (event.type == SDL_QUIT) {
  1776→            running = false;
  1777→        }
  1778→        if (event.type == SDL_KEYDOWN) {
  1779→            if (event.key.keysym.sym == SDLK_ESCAPE) {
  1780→                running = false;
  1781→            }
  1782→            #ifndef __EMSCRIPTEN__
  1783→            // Fullscreen toggle only on desktop
  1784→            if (event.key.keysym.sym == SDLK_F11 ||
  1785→                (event.key.keysym.sym == SDLK_RETURN && (event.key.keysym.mod & KMOD_ALT))) {
  1786→                Uint32 flags = SDL_GetWindowFlags(window);
  1787→                SDL_SetWindowFullscreen(window, (flags & SDL_WINDOW_FULLSCREEN_DESKTOP) ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
  1788→            }
  1789→            #endif
... [30 more lines]

I see the event loop. I need to:
1. Add key state tracking in the event loop (update keys_current on KEYDOWN/KEYUP)
2. Add input_post_update() at the end of the physics loop

Let me update the event handling first.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1768→    if (render_lag > RENDER_RATE * 2) {
  1769→        render_lag = RENDER_RATE * 2;
  1770→    }
  1771→
  1772→    // Process events every frame (not tied to fixed timestep)
  1773→    SDL_Event event;
  1774→    while (SDL_PollEvent(&event)) {
  1775→        if (event.type == SDL_QUIT) {
  1776→            running = false;
  1777→        }
  1778→        // Track keyboard state
  1779→        if (event.type == SDL_KEYDOWN && !event.key.repeat) {
  1780→            SDL_Scancode sc = event.key.keysym.scancode;
  1781→            if (sc < SDL_NUM_SCANCODES) {
  1782→                keys_current[sc] = true;
  1783→            }
  1784→            // Built-in key handling
  1785→            if (event.key.keysym.sym == SDLK_ESCAPE) {
  1786→                running = false;
  1787→            }
  1788→            #ifndef __EMSCRIPTEN__
  1789→            // Fullscreen toggle only on desktop
  1790→            if (event.key.keysym.sym == SDLK_F11 ||
  1791→                (event.key.keysym.sym == SDLK_RETURN && (event.key.keysym.mod & KMOD_ALT))) {
  1792→                Uint32 flags = SDL_GetWindowFlags(window);
  1793→                SDL_SetWindowFullscreen(window, (flags & SDL_WINDOW_FULLSCREEN_DESKTOP) ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
  1794→            }
  1795→            #endif
  1796→        }
... [17 more lines]

Good. Now I need to add `input_post_update()` at the end of the physics loop. Let me find where the physics loop ends.

1820→            lua_pushcfunction(L, traceback);
  1821→            int err_handler = lua_gettop(L);
  1822→            lua_getglobal(L, "update");
  1823→            if (lua_isfunction(L, -1)) {
  1824→                lua_pushnumber(L, PHYSICS_RATE);
  1825→                if (lua_pcall(L, 1, 0, err_handler) != LUA_OK) {
  1826→                    snprintf(error_message, sizeof(error_message), "%s", lua_tostring(L, -1));
  1827→                    fprintf(stderr, "ERROR: %s\n", error_message);
  1828→                    lua_pop(L, 2);  // error + traceback
  1829→                    error_state = true;
  1830→                } else {
  1831→                    lua_pop(L, 1);  // traceback
  1832→                }
  1833→            } else {
  1834→                lua_pop(L, 2);  // nil + traceback
  1835→            }
  1836→        }
  1837→
  1838→        step++;
  1839→        game_time += PHYSICS_RATE;
  1840→        physics_lag -= PHYSICS_RATE;
  1841→    }
  1842→
  1843→    // Render at 60Hz (for chunky pixel movement on high-refresh monitors)
  1844→    if (render_lag >= RENDER_RATE) {
  1845→        render_lag -= RENDER_RATE;
  1846→        frame++;
  1847→
  1848→        // Set up orthographic projection (game coordinates)
  1849→        // Maps (0,0) at top-left to (width, height) at bottom-right
... [10 more lines]

I see. The physics loop ends at line 1841. I should add input_post_update() just before physics_lag -= PHYSICS_RATE.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1834→                lua_pop(L, 2);  // nil + traceback
  1835→            }
  1836→        }
  1837→
  1838→        step++;
  1839→        game_time += PHYSICS_RATE;
  1840→        physics_lag -= PHYSICS_RATE;
  1841→
  1842→        // Copy current input state to previous for next frame's edge detection
  1843→        input_post_update();
  1844→    }
  1845→
  1846→    // Render at 60Hz (for chunky pixel movement on high-refresh monitors)
  1847→    if (render_lag >= RENDER_RATE) {
  1848→        render_lag -= RENDER_RATE;
  1849→        frame++;
  1850→

Now let me build the engine to verify it compiles. Then I'll update the test to verify the input functions work.

anchor.c

src/anchor.c(1092): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Build succeeded. Now let me update the test file to verify the input functions work.

1→print("main.lua loaded - Effects Test")
     2→
     3→set_shape_filter("rough")
     4→
     5→local screen_w, screen_h = 480, 270
     6→
     7→-- Background color from twitter_emoji theme (48, 49, 50)
     8→local bg_color = rgba(231, 232, 233, 255)
     9→
    10→-- Create layers (order matters: first = bottom, last = top)
    11→local bg_layer = layer_create('background')
    12→local shadow_layer = layer_create('shadow')
    13→local outline_layer = layer_create('outline')
    14→local game_layer = layer_create('game')
    15→
    16→-- Load shaders
    17→local shadow_shader = shader_load_file('shaders/shadow.frag')
    18→local outline_shader = shader_load_file('shaders/outline.frag')
    19→print("Shadow shader loaded: " .. tostring(shadow_shader))
    20→print("Outline shader loaded: " .. tostring(outline_shader))
    21→
    22→-- Load textures
    23→local smile_tex = texture_load("assets/slight_smile.png")
    24→local star_tex = texture_load("assets/star.png")
    25→
    26→-- Target display sizes
    27→local smile_size = 36
    28→local star_size = 14
    29→
    30→-- Calculate scale factors (textures are 512x512)
... [146 more lines]

Now I'll update the test file to add keyboard input testing. I'll make the ball controllable with arrow keys or WASD and add visual feedback for key presses.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→print("main.lua loaded - Input Test (Step 1: Raw Keyboard)")
     2→
     3→set_shape_filter("rough")
     4→
     5→local screen_w, screen_h = 480, 270

Now I'll add input handling and visual feedback. I'll modify the ball to be controllable with WASD/arrow keys and show key state feedback.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   100→        layer_pop(layer)
   101→    end
   102→end
   103→
   104→-- Input test state
   105→local move_speed = 150
   106→local pressed_flash = 0  -- Flash timer when space is pressed
   107→
   108→function update(dt)
   109→    game_time = game_time + dt
   110→
   111→    -- === Input Test: Control ball with WASD/Arrow keys ===
   112→    local move_x, move_y = 0, 0
   113→
   114→    -- Check key_is_down for movement (held)
   115→    if key_is_down('w') or key_is_down('up') then move_y = -1 end
   116→    if key_is_down('s') or key_is_down('down') then move_y = 1 end
   117→    if key_is_down('a') or key_is_down('left') then move_x = -1 end
   118→    if key_is_down('d') or key_is_down('right') then move_x = 1 end
   119→
   120→    -- Apply movement
   121→    ball.x = ball.x + move_x * move_speed * dt
   122→    ball.y = ball.y + move_y * move_speed * dt
   123→
   124→    -- Check key_is_pressed for flash effect (edge detection)
   125→    if key_is_pressed('space') then
   126→        pressed_flash = 0.3
   127→        print("Space PRESSED!")
   128→    end
... [23 more lines]

The user wants to test by flashing the emoji or stars based on input. Let me update the draw code to make the ball/emoji flash when space is pressed.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    75→local star_spin_speed = 3.0
    76→
    77→local game_time = 0
    78→
    79→-- Helper to draw objects only (no background) - for outline layer
    80→local function draw_objects(layer)
    81→    -- Draw ball (flashes white when space is pressed)
    82→    local r, g, b = hsv_to_rgb(ball.hue, 1, 1)
    83→    if pressed_flash > 0 then
    84→        -- Flash to white
    85→        local flash_t = pressed_flash / 0.3
    86→        r = math.floor(r + (255 - r) * flash_t)
    87→        g = math.floor(g + (255 - g) * flash_t)
    88→        b = math.floor(b + (255 - b) * flash_t)
    89→    end
    90→    layer_circle(layer, ball.x, ball.y, ball.radius, rgba(r, g, b, 255))
    91→
    92→    -- Draw emoji (flashes when holding shift)
    93→    local emoji_color = rgba(255, 255, 255, 255)
    94→    if key_is_down('shift') then
    95→        -- Yellow tint when shift held
    96→        emoji_color = rgba(255, 255, 100, 255)
    97→    end
    98→    layer_push(layer, emoji.x, emoji.y, emoji.rotation, smile_scale, smile_scale)
    99→        layer_draw_texture(layer, smile_tex, 0, 0, emoji_color)
   100→    layer_pop(layer)
   101→
   102→    -- Draw orbiting stars
   103→    for i = 0, num_stars - 1 do
... [1 more lines]

Wait, I need to check if `layer_draw_texture` supports a color parameter. Let me check the current signature.

1210:static int l_layer_draw_texture(lua_State* L) {
1211-    Layer* layer = (Layer*)lua_touserdata(L, 1);
1212-    Texture* tex = (Texture*)lua_touserdata(L, 2);
1213-    float x = (float)luaL_checknumber(L, 3);
1214-    float y = (float)luaL_checknumber(L, 4);
1215-    uint32_t color = (uint32_t)luaL_optinteger(L, 5, 0xFFFFFFFF);  // Default white (no tint)
1216-    uint32_t flash = (uint32_t)luaL_optinteger(L, 6, 0x00000000);  // Default black (no flash)
1217-    layer_add_image(layer, tex, x, y, color, flash);
1218-    return 0;
1219-}
1220-
1221-static int l_layer_set_blend_mode(lua_State* L) {
1222-    Layer* layer = (Layer*)lua_touserdata(L, 1);
1223-    const char* mode = luaL_checkstring(L, 2);
1224-    if (strcmp(mode, "alpha") == 0) {
1225-        layer_set_blend_mode(layer, BLEND_ALPHA);
1226-    } else if (strcmp(mode, "additive") == 0) {
1227-        layer_set_blend_mode(layer, BLEND_ADDITIVE);
1228-    } else {
1229-        return luaL_error(L, "Invalid blend mode: %s (use 'alpha' or 'additive')", mode);
1230-    }
--
1371:    lua_register(L, "layer_draw_texture", l_layer_draw_texture);
1372-    lua_register(L, "layer_set_blend_mode", l_layer_set_blend_mode);
1373-    lua_register(L, "texture_load", l_texture_load);
1374-    lua_register(L, "texture_get_width", l_texture_get_width);
1375-    lua_register(L, "texture_get_height", l_texture_get_height);
1376-    lua_register(L, "rgba", l_rgba);
1377-    lua_register(L, "set_shape_filter", l_set_shape_filter);
1378-    lua_register(L, "timing_resync", l_timing_resync);
... [13 more lines]

Good, `layer_draw_texture` accepts a color parameter as the 5th argument. The test code should work. But I notice in the original test file, it's called with just 4 arguments. Let me also check the stars to make them flash when a key is pressed.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    98→    layer_push(layer, emoji.x, emoji.y, emoji.rotation, smile_scale, smile_scale)
    99→        layer_draw_texture(layer, smile_tex, 0, 0, emoji_color)
   100→    layer_pop(layer)
   101→
   102→    -- Draw orbiting stars (flash when pressing number keys 1-5)
   103→    for i = 0, num_stars - 1 do
   104→        local angle_offset = (i / num_stars) * math.pi * 2
   105→        local orbit_angle = game_time * orbit_speed + angle_offset
   106→        local star_spin = game_time * star_spin_speed * (i % 2 == 0 and 1 or -1)
   107→
   108→        -- Each star responds to a number key (1-5)
   109→        local key_name = tostring(i + 1)
   110→        local star_color = rgba(255, 255, 255, 255)
   111→        if key_is_down(key_name) then
   112→            star_color = rgba(255, 100, 100, 255)  -- Red when held
   113→        end
   114→
   115→        layer_push(layer, emoji.x, emoji.y, orbit_angle, 1, 1)
   116→            layer_push(layer, orbit_radius, 0, star_spin, star_scale, star_scale)
   117→                layer_draw_texture(layer, star_tex, 0, 0, star_color)
   118→            layer_pop(layer)
   119→        layer_pop(layer)
   120→    end
   121→end
   122→
   123→-- Input test state
   124→local move_speed = 150
   125→local pressed_flash = 0  -- Flash timer when space is pressed

Good, now the test has:
- Ball controlled with WASD/arrow keys (testing key_is_down)
- Ball flashes white when space is pressed (testing key_is_pressed with edge detection)
- Console prints when space is pressed and released (testing key_is_pressed and key_is_released)
- Emoji turns yellow when shift is held (testing key_is_down with 'shift')
- Stars 1-5 turn red when number keys 1-5 are held (testing key_is_down with number keys)

Now I need to build and let the user test it.

anchor.c

src/anchor.c(1092): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Build successful. Let me update the todo to mark step 1 as complete and summarize what's ready to test.

The user hasn't said anything but there was a system reminder and a task notification about the NeoVim preview completing. The user likely needs to test the build themselves. I should wait for their feedback on the test. The task notification is just informational - the NeoVim preview finished. I don't need to read that output file since it was just opening a markdown file for viewing.

Let me just wait for the user's feedback on testing. I shouldn't say anything since they haven't given me a message to respond to.

The error is on line 83 in draw_objects, where we're checking `if pressed_flash > 0`. The issue is that `pressed_flash` is defined after `draw_objects` function, so it's nil when `draw_objects` is called.

Looking at the code structure:
- `draw_objects` is defined around line 79
- `pressed_flash` is defined around line 125

The local variable `pressed_flash` is defined after the function that uses it, so it's not in scope. I need to move the variable declaration before the function definition.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    73→local orbit_radius = 35
    74→local orbit_speed = 2.0
    75→local star_spin_speed = 3.0
    76→
    77→local game_time = 0
    78→
    79→-- Input test state
    80→local move_speed = 150
    81→local pressed_flash = 0  -- Flash timer when space is pressed
    82→
    83→-- Helper to draw objects only (no background) - for outline layer
    84→local function draw_objects(layer)
    85→    -- Draw ball (flashes white when space is pressed)
    86→    local r, g, b = hsv_to_rgb(ball.hue, 1, 1)
    87→    if pressed_flash > 0 then
    88→        -- Flash to white

Now I need to remove the duplicate declaration that was after the function.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   120→            layer_push(layer, orbit_radius, 0, star_spin, star_scale, star_scale)
   121→                layer_draw_texture(layer, star_tex, 0, 0, star_color)
   122→            layer_pop(layer)
   123→        layer_pop(layer)
   124→    end
   125→end
   126→
   127→function update(dt)
   128→    game_time = game_time + dt
   129→
   130→    -- === Input Test: Control ball with WASD/Arrow keys ===
   131→    local move_x, move_y = 0, 0

Good, the duplicate declaration is removed. The code should work now. The user can test it without rebuilding since it's a Lua change, not a C change.

Let me check if the tint logic works at all. Looking at the layer_draw_texture function, it takes color as the 5th parameter. But looking at the original code, it was called with just 4 arguments (layer, tex, x, y). Let me check if there's an issue with how we're passing colors.

Actually, looking more carefully at l_layer_draw_texture:
```c
float x = (float)luaL_checknumber(L, 3);
float y = (float)luaL_checknumber(L, 4);
uint32_t color = (uint32_t)luaL_optinteger(L, 5, 0xFFFFFFFF);
```

So it expects:
1. layer (userdata)
2. tex (userdata)
3. x (number)
4. y (number)
5. color (optional integer, default white)

But we're calling it like:
```lua
layer_draw_texture(layer, smile_tex, 0, 0, emoji_color)
```

Where `emoji_color = rgba(255, 255, 100, 255)`. Let me check what rgba returns - it should return a packed uint32.

Let me also add some debug prints to figure out if the input is working or if it's the tint that's not working.

Actually, let me add a simple test - print when shift is detected so we can isolate if it's input or rendering.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    92→        b = math.floor(b + (255 - b) * flash_t)
    93→    end
    94→    layer_circle(layer, ball.x, ball.y, ball.radius, rgba(r, g, b, 255))
    95→
    96→    -- Draw emoji (flashes when holding shift)
    97→    local emoji_color = rgba(255, 255, 255, 255)
    98→    if key_is_down('shift') then
    99→        -- Yellow tint when shift held
   100→        emoji_color = rgba(255, 255, 100, 255)
   101→        print("Shift is down!")
   102→    end
   103→    if key_is_down('lshift') then
   104→        print("LShift is down!")
   105→    end
   106→    layer_push(layer, emoji.x, emoji.y, emoji.rotation, smile_scale, smile_scale)
   107→        layer_draw_texture(layer, smile_tex, 0, 0, emoji_color)
   108→    layer_pop(layer)
   109→

I also want to add debug for the number keys.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   112→        local angle_offset = (i / num_stars) * math.pi * 2
   113→        local orbit_angle = game_time * orbit_speed + angle_offset
   114→        local star_spin = game_time * star_spin_speed * (i % 2 == 0 and 1 or -1)
   115→
   116→        -- Each star responds to a number key (1-5)
   117→        local key_name = tostring(i + 1)
   118→        local star_color = rgba(255, 255, 255, 255)
   119→        if key_is_down(key_name) then
   120→            star_color = rgba(255, 100, 100, 255)  -- Red when held
   121→            print("Key " .. key_name .. " is down!")
   122→        end
   123→
   124→        layer_push(layer, emoji.x, emoji.y, orbit_angle, 1, 1)
   125→            layer_push(layer, orbit_radius, 0, star_spin, star_scale, star_scale)
   126→                layer_draw_texture(layer, star_tex, 0, 0, star_color)

Now when you test, if you see print output, then input is working but rendering tint isn't. If you don't see print output, then the input detection for those keys isn't working.

So the input is working, but the tint/color is not being applied to the textures. The issue is with how the color is being passed to layer_draw_texture or how the shader handles the color for sprites.

Let me check the layer_add_image function and how it handles the color parameter.

355:static void layer_add_image(Layer* layer, Texture* tex, float x, float y, uint32_t color, uint32_t flash_color) {
356-    DrawCommand* cmd = layer_add_command(layer);
357-    if (!cmd) return;
358-    cmd->type = COMMAND_SPRITE;
359-    cmd->color = color;
360-    cmd->flash_color = flash_color;
361-    cmd->texture_id = tex->id;
362-    cmd->params[0] = x;
363-    cmd->params[1] = y;
364-    cmd->params[2] = (float)tex->width;
365-    cmd->params[3] = (float)tex->height;
366-}
367-
368-// Set the current blend mode for subsequent commands
369-static void layer_set_blend_mode(Layer* layer, uint8_t mode) {
370-    layer->current_blend = mode;
371-}
372-
373-// Batch rendering
374-#define MAX_BATCH_VERTICES 6000  // 1000 quads * 6 vertices
375-#define VERTEX_FLOATS 16         // x, y, u, v, r, g, b, a, type, shape[4], addR, addG, addB
376-
377-// Shape types for uber-shader
378-#define SHAPE_TYPE_RECT   0.0f
379-#define SHAPE_TYPE_CIRCLE 1.0f
380-#define SHAPE_TYPE_SPRITE 2.0f
--
1217:    layer_add_image(layer, tex, x, y, color, flash);
1218-    return 0;
1219-}
... [23 more lines]

The color is stored in cmd->color. Let me check how process_sprite uses the color and passes it to the shader.

894:// Forward declaration of batch_flush (needed for process_sprite)
895-static void batch_flush(void);
896-
897-// Process a sprite command (texture sampling)
898-// Image is centered at (x, y) in local coordinates
899:static void process_sprite(const DrawCommand* cmd) {
900-    float x = cmd->params[0];
901-    float y = cmd->params[1];
902-    float w = cmd->params[2];
903-    float h = cmd->params[3];
904-
905-    // Flush batch if texture changes
906-    if (current_batch_texture != cmd->texture_id && batch_vertex_count > 0) {
907-        batch_flush();
908-    }
909-    current_batch_texture = cmd->texture_id;
910-
911-    // Image is centered at (x, y), so compute corners
912-    float half_w = w * 0.5f;
913-    float half_h = h * 0.5f;
914-
915-    // Local corners (centered at x, y)
916-    float lx0 = x - half_w, ly0 = y - half_h;
917-    float lx1 = x + half_w, ly1 = y - half_h;
918-    float lx2 = x + half_w, ly2 = y + half_h;
919-    float lx3 = x - half_w, ly3 = y + half_h;
920-
921-    // Transform to world coordinates
922-    float wx0, wy0, wx1, wy1, wx2, wy2, wx3, wy3;
923-    transform_point(cmd->transform, lx0, ly0, &wx0, &wy0);
... [58 more lines]

The code does unpack the color and pass it to batch_add_sdf_quad. Let me check how batch_add_sdf_quad is called with these parameters and how the shader uses the color. Looking at the vertex format:- x, y, u, v, r, g, b, a, type, shape[4], addR, addG, addB

So the color should be passed correctly. Let me check the uber-shader to see how sprites are rendered and if they use the color for tinting.

65:    COMMAND_SPRITE,
85://   SPRITE: x,y is center (texture drawn centered at that point)
87:    uint8_t type;           // COMMAND_RECTANGLE, COMMAND_CIRCLE, COMMAND_SPRITE, COMMAND_APPLY_SHADER, COMMAND_SET_UNIFORM_*
97:    // SPRITE: params[0]=x, [1]=y, [2]=w, [3]=h, [4]=ox, [5]=oy (+ texture_id)
104:    GLuint texture_id;      // For SPRITE: texture handle; For APPLY_SHADER: shader handle (4 bytes)
358:    cmd->type = COMMAND_SPRITE;
380:#define SHAPE_TYPE_SPRITE 2.0f
941:                       SHAPE_TYPE_SPRITE, 0.0f, 0.0f, 0.0f, 0.0f,
1051:            case COMMAND_SPRITE:
1441:    "out vec4 vColor;\n"
1452:    "    vColor = aColor;\n"
1461:    "in vec4 vColor;\n"
1526:    "        // vColor is multiply (tint), vAddColor is additive (flash)\n"
1529:    "        vec4 texColor = texture(u_texture, snappedUV);\n"
1530:    "        FragColor = vec4(texColor.rgb * vColor.rgb + vAddColor, texColor.a * vColor.a);\n"
1535:    "    // vColor is multiply (tint), vAddColor is additive (flash)\n"
1542:    "    FragColor = vec4(vColor.rgb + vAddColor, vColor.a * alpha);\n"

The user wants me to try changing the color to white to see if it works. They suspect that the issue might be with the specific color values we're using. Let me change the colors to white in the test.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    92→        b = math.floor(b + (255 - b) * flash_t)
    93→    end
    94→    layer_circle(layer, ball.x, ball.y, ball.radius, rgba(r, g, b, 255))
    95→
    96→    -- Draw emoji (flashes when holding shift)
    97→    local emoji_color = nil  -- Don't pass color normally
    98→    if key_is_down('shift') then
    99→        -- Yellow tint when shift held
   100→        emoji_color = rgba(255, 255, 255, 255)  -- Try white first
   101→        print("Shift is down!")
   102→    end
   103→    layer_push(layer, emoji.x, emoji.y, emoji.rotation, smile_scale, smile_scale)
   104→        layer_draw_texture(layer, smile_tex, 0, 0, emoji_color)
   105→    layer_pop(layer)
   106→

Wait, if I pass nil, it might cause an issue since the C function expects an integer. Actually, looking at the C code:

```c
uint32_t color = (uint32_t)luaL_optinteger(L, 5, 0xFFFFFFFF);  // Default white (no tint)
```

If we pass nil, luaL_optinteger will use the default 0xFFFFFFFF. So passing nil should be the same as passing white.

But actually what we want to test is: does passing an explicit white make it work, vs not passing anything (default white)?

Let me just test with explicit white when shift is held. The idea is:
- When shift is NOT held: don't pass color (use default)
- When shift IS held: pass explicit white

If we see a visual difference when holding shift even though both should be white, then there's something weird with the color handling.

Good question. Let me compare how circles handle color vs how sprites handle color. The circle does flash white when space is pressed, so the color logic works for circles. Let me check the difference between how circles and sprites use color.

809:static void process_rectangle(const DrawCommand* cmd) {
810-    float x = cmd->params[0];
811-    float y = cmd->params[1];
812-    float w = cmd->params[2];
813-    float h = cmd->params[3];
814-
815-    // Add padding for anti-aliasing (1-2 pixels)
816-    float pad = 2.0f;
817-
818-    // Quad size in local space (including padding)
819-    float quad_w = w + 2.0f * pad;
820-    float quad_h = h + 2.0f * pad;
821-
822-    // Rectangle corners with padding (local coordinates)
823-    // 0---1
824-    // |   |
825-    // 3---2
826-    float lx0 = x - pad, ly0 = y - pad;
827-    float lx1 = x + w + pad, ly1 = y - pad;
828-    float lx2 = x + w + pad, ly2 = y + h + pad;
829-    float lx3 = x - pad, ly3 = y + h + pad;
830-
831-    // Transform to world coordinates
832-    float wx0, wy0, wx1, wy1, wx2, wy2, wx3, wy3;
833-    transform_point(cmd->transform, lx0, ly0, &wx0, &wy0);
834-    transform_point(cmd->transform, lx1, ly1, &wx1, &wy1);
835-    transform_point(cmd->transform, lx2, ly2, &wx2, &wy2);
836-    transform_point(cmd->transform, lx3, ly3, &wx3, &wy3);
837-
838-    // Rectangle half-size in local space
... [73 more lines]

I see the difference. Let me look at how each calls `batch_add_sdf_quad`. Circle calls it with the color from `unpack_color(cmd->color, ...)`. Let me check how layer_add_circle gets the color vs layer_add_image.

343:static void layer_add_circle(Layer* layer, float x, float y, float radius, uint32_t color) {
344-    DrawCommand* cmd = layer_add_command(layer);
345-    if (!cmd) return;
346-    cmd->type = COMMAND_CIRCLE;
347-    cmd->color = color;
348-    cmd->params[0] = x;
349-    cmd->params[1] = y;
350-    cmd->params[2] = radius;
351-}
352-
353-// Record a sprite/image command (centered at x, y)
354-// color = multiply/tint color (RGBA), flash_color = additive flash color (RGB, alpha ignored)
355-static void layer_add_image(Layer* layer, Texture* tex, float x, float y, uint32_t color, uint32_t flash_color) {
356-    DrawCommand* cmd = layer_add_command(layer);
357-    if (!cmd) return;
358-    cmd->type = COMMAND_SPRITE;
--
1131:static int l_layer_circle(lua_State* L) {
1132-    Layer* layer = (Layer*)lua_touserdata(L, 1);
1133-    float x = (float)luaL_checknumber(L, 2);
1134-    float y = (float)luaL_checknumber(L, 3);
1135-    float radius = (float)luaL_checknumber(L, 4);
1136-    uint32_t color = (uint32_t)luaL_checkinteger(L, 5);
1137:    layer_add_circle(layer, x, y, radius, color);
1138-    return 0;
1139-}
1140-
1141-static int l_rgba(lua_State* L) {
1142-    int r = (int)luaL_checkinteger(L, 1);
1143-    int g = (int)luaL_checkinteger(L, 2);
... [26 more lines]

I see! Looking at the two Lua bindings:

**l_layer_circle:**
```c
uint32_t color = (uint32_t)luaL_checkinteger(L, 5);
```
Uses `luaL_checkinteger` - requires the argument.

**l_layer_draw_texture:**
```c
uint32_t color = (uint32_t)luaL_optinteger(L, 5, 0xFFFFFFFF);
```
Uses `luaL_optinteger` - optional, defaults to 0xFFFFFFFF.

But both should work the same if we pass an explicit color. Let me check if maybe nil is being passed incorrectly. Actually wait - in the test code we're now passing `nil` when shift is not held:

```lua
local emoji_color = nil  -- Don't pass color normally
if key_is_down('shift') then
    emoji_color = rgba(255, 255, 255, 255)  -- Try white first
end
layer_draw_texture(layer, smile_tex, 0, 0, emoji_color)
```

When `emoji_color` is nil, `luaL_optinteger` should use the default 0xFFFFFFFF. When it's explicitly white (255, 255, 255, 255), it should be 0xFFFFFFFF.

Wait, let me check rgba() output format:
```c
uint32_t color = ((r & 0xFF) << 24) | ((g & 0xFF) << 16) | ((b & 0xFF) << 8) | (a & 0xFF);
```

So rgba(255, 255, 255, 255) = 0xFFFFFFFF. That should be the same as the default.

But wait, there could be a problem with how lua handles large integers. Let me check what `luaL_optinteger` does with 0xFFFFFFFF as a signed value vs unsigned. 

I'm investigating how Lua handles 64-bit signed integers and potential conversion issues. The unsigned 32-bit value 4294967295 should be representable, but there might be nuanced type conversion happening when passing values between Lua and C. The interaction between `luaL_optinteger`, `lua_pushinteger`, and integer representation needs careful examination to understand any potential discrepancies.

The core question is how nil and large integer values are being interpreted during the cross-language function call, particularly when using `rgba()` to generate the color value.

I'll modify the test to simplify the input validation by changing the emoji's visibility based on a shift key press, which will help confirm the input pipeline is functioning correctly before diving deeper into color-specific complexities.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    92→        b = math.floor(b + (255 - b) * flash_t)
    93→    end
    94→    layer_circle(layer, ball.x, ball.y, ball.radius, rgba(r, g, b, 255))
    95→
    96→    -- Draw emoji (hidden when holding shift - to test input works)
    97→    if not key_is_down('shift') then
    98→        layer_push(layer, emoji.x, emoji.y, emoji.rotation, smile_scale, smile_scale)
    99→            layer_draw_texture(layer, smile_tex, 0, 0)
   100→        layer_pop(layer)
   101→    end
   102→
   103→    -- Draw orbiting stars (flash when pressing number keys 1-5)
   104→    for i = 0, num_stars - 1 do
   105→        local angle_offset = (i / num_stars) * math.pi * 2

Now when you hold shift, the emoji should disappear. If it does, then input is working and we can focus on the color/tint issue. Let me also do the same for stars - maybe use position instead of color to test.

Good, so input is working correctly. The issue is with the texture tint/color system. Let me investigate why the color isn't being applied to textures. Let me check the shader code more carefully to see how sprite colors are handled.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    92→        b = math.floor(b + (255 - b) * flash_t)
    93→    end
    94→    layer_circle(layer, ball.x, ball.y, ball.radius, rgba(r, g, b, 255))
    95→
    96→    -- Draw emoji (disappears when holding shift)
    97→    if not key_is_down('shift') then
    98→        layer_push(layer, emoji.x, emoji.y, emoji.rotation, smile_scale, smile_scale)
    99→            layer_draw_texture(layer, smile_tex, 0, 0)
   100→        layer_pop(layer)
   101→    end
   102→
   103→    -- Draw orbiting stars (disappear when pressing their number key 1-5)
   104→    for i = 0, num_stars - 1 do
   105→        local angle_offset = (i / num_stars) * math.pi * 2
   106→        local orbit_angle = game_time * orbit_speed + angle_offset
   107→        local star_spin = game_time * star_spin_speed * (i % 2 == 0 and 1 or -1)
   108→
   109→        -- Each star hides when its number key is held
   110→        local key_name = tostring(i + 1)
   111→        if not key_is_down(key_name) then
   112→            layer_push(layer, emoji.x, emoji.y, orbit_angle, 1, 1)
   113→                layer_push(layer, orbit_radius, 0, star_spin, star_scale, star_scale)
   114→                    layer_draw_texture(layer, star_tex, 0, 0)
   115→                layer_pop(layer)
   116→            layer_pop(layer)
   117→        end
   118→    end
   119→end
   120→
... [2 more lines]

Step 1 is now verified with working tests:
- WASD/Arrow keys move the ball
- Space makes the ball flash white
- Shift hides the emoji
- Keys 1-5 hide the corresponding stars

The texture tint issue is a separate rendering bug from Phase 3/4, not related to input. Let me mark Step 1 complete and move to Step 2.

- [completed] Step 1: Raw keyboard state
- [in_progress] Step 2: Mouse state
- [pending] Step 3: Basic action binding
- [pending] Step 4: Unbinding and bind_all
- [pending] Step 5: Axis helpers
- [pending] Step 6: Gamepad support
- [pending] Step 7: Chords
- [pending] Step 8: Sequences
- [pending] Step 9: Holds
- [pending] Step 10: Input type detection
- [pending] Step 11: Rebinding capture
- [pending] Step 12: Utility functions

Step 1 is verified and complete! Now onto Step 2: Mouse state. I need to implement:- Track: position (x, y), delta (dx, dy), buttons (1-5), wheel
- SDL events: SDL_MOUSEMOTION, SDL_MOUSEBUTTONDOWN/UP, SDL_MOUSEWHEEL
- mouse_position() — returns x, y in game coordinates (scaled from window)
- mouse_delta() — returns dx, dy this frame
- mouse_set_visible(bool)
- mouse_set_grabbed(bool)
- Mouse button edge detection (pressed/released) like keyboard

The user wants to build the web version to test that Step 1 works there too before moving on.

Building with game folder: ../test
Build successful: build-web/anchor.html
To test: cd build-web && python -m http.server 8000
Then open: http://localhost:8000/anchor.html

Web build succeeded. Let me tell the user it's ready to test.

Now I'll implement Step 2: Mouse state. I need to add:
- Track: position (x, y), delta (dx, dy), buttons (1-5), wheel
- SDL events: SDL_MOUSEMOTION, SDL_MOUSEBUTTONDOWN/UP, SDL_MOUSEWHEEL
- mouse_position() — returns x, y in game coordinates (scaled from window)
- mouse_delta() — returns dx, dy this frame
- mouse_set_visible(bool)
- mouse_set_grabbed(bool)
- Mouse button edge detection (pressed/released) like keyboard

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   547→#define MAX_LAYER_DRAWS 64
   548→static LayerDrawCommand layer_draw_queue[MAX_LAYER_DRAWS];
   549→static int layer_draw_count = 0;
   550→
   551→// Input state - Keyboard
   552→static bool keys_current[SDL_NUM_SCANCODES] = {0};
   553→static bool keys_previous[SDL_NUM_SCANCODES] = {0};
   554→
   555→// Input state - Mouse
   556→#define MAX_MOUSE_BUTTONS 5
   557→static bool mouse_buttons_current[MAX_MOUSE_BUTTONS] = {0};
   558→static bool mouse_buttons_previous[MAX_MOUSE_BUTTONS] = {0};
   559→static int mouse_x = 0, mouse_y = 0;           // Window coordinates
   560→static int mouse_dx = 0, mouse_dy = 0;         // Delta this frame
   561→static int mouse_wheel_x = 0, mouse_wheel_y = 0; // Wheel delta this frame
   562→
   563→// Convert key name string to SDL scancode
   564→static SDL_Scancode key_name_to_scancode(const char* name) {
   565→    if (!name) return SDL_SCANCODE_UNKNOWN;

Now I need to:
1. Update input_post_update to also copy mouse state and reset deltas
2. Add mouse event handling in the event loop
3. Add Lua binding functions
4. Register the bindings

Let me update input_post_update first.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   652→
   653→    return SDL_SCANCODE_UNKNOWN;
   654→}
   655→
   656→// Copy current input state to previous (called at end of physics frame)
   657→static void input_post_update(void) {
   658→    memcpy(keys_previous, keys_current, sizeof(keys_previous));
   659→    memcpy(mouse_buttons_previous, mouse_buttons_current, sizeof(mouse_buttons_previous));
   660→    // Reset per-frame deltas
   661→    mouse_dx = 0;
   662→    mouse_dy = 0;
   663→    mouse_wheel_x = 0;
   664→    mouse_wheel_y = 0;
   665→}
   666→
   667→// Queue a layer to be drawn to screen at given offset
   668→static void layer_queue_draw(Layer* layer, float x, float y) {
   669→    if (layer_draw_count >= MAX_LAYER_DRAWS) return;

Now I need to add mouse event handling in the event loop. Let me find where the keyboard events are handled and add mouse events there.

1795→            if (sc < SDL_NUM_SCANCODES) {
  1796→                keys_current[sc] = true;
  1797→            }
  1798→            // Built-in key handling
  1799→            if (event.key.keysym.sym == SDLK_ESCAPE) {
  1800→                running = false;
  1801→            }
  1802→            #ifndef __EMSCRIPTEN__
  1803→            // Fullscreen toggle only on desktop
  1804→            if (event.key.keysym.sym == SDLK_F11 ||
  1805→                (event.key.keysym.sym == SDLK_RETURN && (event.key.keysym.mod & KMOD_ALT))) {
  1806→                Uint32 flags = SDL_GetWindowFlags(window);
  1807→                SDL_SetWindowFullscreen(window, (flags & SDL_WINDOW_FULLSCREEN_DESKTOP) ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
  1808→            }
  1809→            #endif
  1810→        }
  1811→        if (event.type == SDL_KEYUP) {
  1812→            SDL_Scancode sc = event.key.keysym.scancode;
  1813→            if (sc < SDL_NUM_SCANCODES) {
  1814→                keys_current[sc] = false;
  1815→            }
  1816→        }
  1817→        // Handle window focus events - resync timing to prevent catch-up stutter
  1818→        if (event.type == SDL_WINDOWEVENT) {
  1819→            if (event.window.event == SDL_WINDOWEVENT_FOCUS_GAINED) {
  1820→                timing_resync();
  1821→            }
  1822→        }
  1823→    }
  1824→
... [10 more lines]

I see where to add the mouse event handling - after the KEYUP handling and before the window event handling.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1807→                SDL_SetWindowFullscreen(window, (flags & SDL_WINDOW_FULLSCREEN_DESKTOP) ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
  1808→            }
  1809→            #endif
  1810→        }
  1811→        if (event.type == SDL_KEYUP) {
  1812→            SDL_Scancode sc = event.key.keysym.scancode;
  1813→            if (sc < SDL_NUM_SCANCODES) {
  1814→                keys_current[sc] = false;
  1815→            }
  1816→        }
  1817→        // Track mouse motion
  1818→        if (event.type == SDL_MOUSEMOTION) {
  1819→            mouse_x = event.motion.x;
  1820→            mouse_y = event.motion.y;
  1821→            mouse_dx += event.motion.xrel;
  1822→            mouse_dy += event.motion.yrel;
  1823→        }
  1824→        // Track mouse buttons
  1825→        if (event.type == SDL_MOUSEBUTTONDOWN) {
  1826→            int btn = event.button.button - 1;  // SDL buttons are 1-indexed
  1827→            if (btn >= 0 && btn < MAX_MOUSE_BUTTONS) {
  1828→                mouse_buttons_current[btn] = true;
  1829→            }
  1830→        }
  1831→        if (event.type == SDL_MOUSEBUTTONUP) {
  1832→            int btn = event.button.button - 1;
  1833→            if (btn >= 0 && btn < MAX_MOUSE_BUTTONS) {
  1834→                mouse_buttons_current[btn] = false;
  1835→            }
... [11 more lines]

Good, now I need to add the Lua binding functions. I need to convert window coordinates to game coordinates for mouse_position. Let me find the scaling logic used elsewhere in the code.

1930-        int window_w, window_h;
1931-        SDL_GetWindowSize(window, &window_w, &window_h);
1932-
1933:        // Calculate scale to fit window while maintaining aspect ratio
1934-        // Use integer scaling for pixel-perfect rendering
1935:        float scale_x = (float)window_w / GAME_WIDTH;
1936:        float scale_y = (float)window_h / GAME_HEIGHT;
1937-        float scale = (scale_x < scale_y) ? scale_x : scale_y;
1938-        int int_scale = (int)scale;
1939-        if (int_scale < 1) int_scale = 1;
1940-
1941:        // Calculate centered position with letterboxing
1942-        int scaled_w = GAME_WIDTH * int_scale;
1943-        int scaled_h = GAME_HEIGHT * int_scale;
1944-        int offset_x = (window_w - scaled_w) / 2;
1945-        int offset_y = (window_h - scaled_h) / 2;
1946-
1947:        // Clear screen to black (letterbox color)
1948-        glViewport(0, 0, window_w, window_h);
1949-        glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
1950-        glClear(GL_COLOR_BUFFER_BIT);
1951-
1952:        // Set viewport for game area
1953-        glViewport(offset_x, offset_y, scaled_w, scaled_h);
1954-        glUseProgram(screen_shader);
1955-
--
2146-    }
2147-    printf("Screen shader created\n");
2148-
... [4 more lines]

I see. The game uses integer scaling. To convert window coordinates to game coordinates, I need to:
1. Subtract the letterbox offset
2. Divide by the integer scale

The code is in the render loop. I'll need to either store these values globally or recalculate them. Let me add a helper function to convert window mouse coordinates to game coordinates.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   652→
   653→    return SDL_SCANCODE_UNKNOWN;
   654→}
   655→
   656→// Copy current input state to previous (called at end of physics frame)
   657→static void input_post_update(void) {
   658→    memcpy(keys_previous, keys_current, sizeof(keys_previous));
   659→    memcpy(mouse_buttons_previous, mouse_buttons_current, sizeof(mouse_buttons_previous));
   660→    // Reset per-frame deltas
   661→    mouse_dx = 0;
   662→    mouse_dy = 0;
   663→    mouse_wheel_x = 0;
   664→    mouse_wheel_y = 0;
   665→}
   666→
   667→// Convert window mouse coordinates to game coordinates
   668→// Returns false if mouse is outside the game area (in letterbox)
   669→static bool mouse_to_game_coords(int win_x, int win_y, float* game_x, float* game_y) {
   670→    int window_w, window_h;
   671→    SDL_GetWindowSize(window, &window_w, &window_h);
   672→
   673→    // Calculate scale (same logic as render)
   674→    float scale_x = (float)window_w / GAME_WIDTH;
   675→    float scale_y = (float)window_h / GAME_HEIGHT;
   676→    float scale = (scale_x < scale_y) ? scale_x : scale_y;
   677→    int int_scale = (int)scale;
   678→    if (int_scale < 1) int_scale = 1;
   679→
   680→    // Calculate letterbox offset
... [19 more lines]

Good, now I need to add the Lua binding functions. Let me find where the keyboard bindings are and add the mouse bindings after them.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1394→    }
  1395→    return 1;
  1396→}
  1397→
  1398→static int l_key_is_released(lua_State* L) {
  1399→    const char* key_name = luaL_checkstring(L, 1);
  1400→    SDL_Scancode scancode = key_name_to_scancode(key_name);
  1401→    if (scancode == SDL_SCANCODE_UNKNOWN) {
  1402→        lua_pushboolean(L, 0);
  1403→    } else {
  1404→        lua_pushboolean(L, !keys_current[scancode] && keys_previous[scancode]);
  1405→    }
  1406→    return 1;
  1407→}
  1408→
  1409→// Mouse Lua bindings
  1410→static int l_mouse_position(lua_State* L) {
  1411→    float gx, gy;
  1412→    mouse_to_game_coords(mouse_x, mouse_y, &gx, &gy);
  1413→    lua_pushnumber(L, gx);
  1414→    lua_pushnumber(L, gy);
  1415→    return 2;
  1416→}
  1417→
  1418→static int l_mouse_delta(lua_State* L) {
  1419→    // Delta is in window pixels, scale to game pixels
  1420→    int window_w, window_h;
  1421→    SDL_GetWindowSize(window, &window_w, &window_h);
  1422→    float scale_x = (float)window_w / GAME_WIDTH;
... [63 more lines]

Looking at the summary, I was in the middle of implementing Step 2: Mouse state. I had added the mouse state variables, SDL event handling, the coordinate conversion helper, and the Lua binding functions - but I hadn't yet registered those Lua bindings in the `register_lua_bindings()` function.

Let me continue by:
1. Reading the current state of anchor.c to find where I need to add the registrations
2. Adding the mouse Lua binding registrations
3. Building the engine
4. Updating the test to use mouse functions

Let me read anchor.c to see the current state and find the register_lua_bindings function.

E:\a327ex\Anchor\engine\src\anchor.c-1505-    lua_register(L, "layer_apply_shader", l_layer_apply_shader);
E:\a327ex\Anchor\engine\src\anchor.c-1506-    lua_register(L, "layer_draw", l_layer_draw);
E:\a327ex\Anchor\engine\src\anchor.c-1507-    lua_register(L, "layer_get_texture", l_layer_get_texture);
E:\a327ex\Anchor\engine\src\anchor.c-1508-    lua_register(L, "layer_reset_effects", l_layer_reset_effects);
E:\a327ex\Anchor\engine\src\anchor.c-1509-    // Input
E:\a327ex\Anchor\engine\src\anchor.c:1510:    lua_register(L, "key_is_down", l_key_is_down);
E:\a327ex\Anchor\engine\src\anchor.c:1511:    lua_register(L, "key_is_pressed", l_key_is_pressed);
E:\a327ex\Anchor\engine\src\anchor.c:1512:    lua_register(L, "key_is_released", l_key_is_released);
E:\a327ex\Anchor\engine\src\anchor.c-1513-}
E:\a327ex\Anchor\engine\src\anchor.c-1514-
E:\a327ex\Anchor\engine\src\anchor.c-1515-// Main loop state (needed for emscripten)
E:\a327ex\Anchor\engine\src\anchor.c-1516-static bool running = true;
E:\a327ex\Anchor\engine\src\anchor.c-1517-static Uint64 perf_freq = 0;

Good, I found the registration section. The keyboard bindings are at lines 1510-1512, and I need to add the mouse bindings right after them. Let me add the mouse function registrations.

<tool_use_error>File has not been read yet. Read it first before writing to it.</tool_use_error>

I need to read anchor.c first before editing it. Let me do that.

1500→    lua_register(L, "layer_shader_set_float", l_layer_shader_set_float);
  1501→    lua_register(L, "layer_shader_set_vec2", l_layer_shader_set_vec2);
  1502→    lua_register(L, "layer_shader_set_vec4", l_layer_shader_set_vec4);
  1503→    lua_register(L, "layer_shader_set_int", l_layer_shader_set_int);
  1504→    // Layer effects
  1505→    lua_register(L, "layer_apply_shader", l_layer_apply_shader);
  1506→    lua_register(L, "layer_draw", l_layer_draw);
  1507→    lua_register(L, "layer_get_texture", l_layer_get_texture);
  1508→    lua_register(L, "layer_reset_effects", l_layer_reset_effects);
  1509→    // Input
  1510→    lua_register(L, "key_is_down", l_key_is_down);
  1511→    lua_register(L, "key_is_pressed", l_key_is_pressed);
  1512→    lua_register(L, "key_is_released", l_key_is_released);
  1513→}
  1514→
  1515→// Main loop state (needed for emscripten)
  1516→static bool running = true;
  1517→static Uint64 perf_freq = 0;
  1518→static Uint64 last_time = 0;
  1519→static double physics_lag = 0.0;
  1520→static double render_lag = 0.0;
  1521→static Uint64 step = 0;
  1522→static double game_time = 0.0;
  1523→static Uint64 frame = 0;
  1524→
  1525→// VSync snap frequencies (computed at init based on display refresh rate)
  1526→static double snap_frequencies[8];
  1527→static int snap_frequency_count = 0;
  1528→
  1529→// Reset timing accumulators (call on focus gain, scene transitions, etc.)
... [70 more lines]

Good, I can see the register_lua_bindings function ends at line 1513. Now let me edit to add the mouse registrations.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1505→    lua_register(L, "layer_apply_shader", l_layer_apply_shader);
  1506→    lua_register(L, "layer_draw", l_layer_draw);
  1507→    lua_register(L, "layer_get_texture", l_layer_get_texture);
  1508→    lua_register(L, "layer_reset_effects", l_layer_reset_effects);
  1509→    // Input - Keyboard
  1510→    lua_register(L, "key_is_down", l_key_is_down);
  1511→    lua_register(L, "key_is_pressed", l_key_is_pressed);
  1512→    lua_register(L, "key_is_released", l_key_is_released);
  1513→    // Input - Mouse
  1514→    lua_register(L, "mouse_position", l_mouse_position);
  1515→    lua_register(L, "mouse_delta", l_mouse_delta);
  1516→    lua_register(L, "mouse_set_visible", l_mouse_set_visible);
  1517→    lua_register(L, "mouse_set_grabbed", l_mouse_set_grabbed);
  1518→    lua_register(L, "mouse_is_down", l_mouse_is_down);
  1519→    lua_register(L, "mouse_is_pressed", l_mouse_is_pressed);
  1520→    lua_register(L, "mouse_is_released", l_mouse_is_released);
  1521→    lua_register(L, "mouse_wheel", l_mouse_wheel);
  1522→}
  1523→
  1524→// Main loop state (needed for emscripten)
  1525→static bool running = true;
  1526→static Uint64 perf_freq = 0;

Good, now I need to verify that the Lua binding functions themselves were added. Let me check if they exist in the file. From the summary, they should be added somewhere around line 1409-1479. Let me check.

E:\a327ex\Anchor\engine\src\anchor.c-1407-}
E:\a327ex\Anchor\engine\src\anchor.c-1408-
E:\a327ex\Anchor\engine\src\anchor.c-1409-// Mouse Lua bindings
E:\a327ex\Anchor\engine\src\anchor.c:1410:static int l_mouse_position(lua_State* L) {
E:\a327ex\Anchor\engine\src\anchor.c-1411-    float gx, gy;
E:\a327ex\Anchor\engine\src\anchor.c-1412-    mouse_to_game_coords(mouse_x, mouse_y, &gx, &gy);
E:\a327ex\Anchor\engine\src\anchor.c-1413-    lua_pushnumber(L, gx);
--
E:\a327ex\Anchor\engine\src\anchor.c-1511-    lua_register(L, "key_is_pressed", l_key_is_pressed);
E:\a327ex\Anchor\engine\src\anchor.c-1512-    lua_register(L, "key_is_released", l_key_is_released);
E:\a327ex\Anchor\engine\src\anchor.c-1513-    // Input - Mouse
E:\a327ex\Anchor\engine\src\anchor.c:1514:    lua_register(L, "mouse_position", l_mouse_position);
E:\a327ex\Anchor\engine\src\anchor.c-1515-    lua_register(L, "mouse_delta", l_mouse_delta);
E:\a327ex\Anchor\engine\src\anchor.c-1516-    lua_register(L, "mouse_set_visible", l_mouse_set_visible);
E:\a327ex\Anchor\engine\src\anchor.c-1517-    lua_register(L, "mouse_set_grabbed", l_mouse_set_grabbed);

Good, the mouse binding functions exist. Let me also check for SDL_MOUSEMOTION handling to ensure the event handling was added correctly.

E:\a327ex\Anchor\engine\src\anchor.c-1909-            // Built-in key handling
E:\a327ex\Anchor\engine\src\anchor.c-1910-            if (event.key.keysym.sym == SDLK_ESCAPE) {
E:\a327ex\Anchor\engine\src\anchor.c-1911-                running = false;
E:\a327ex\Anchor\engine\src\anchor.c-1912-            }
E:\a327ex\Anchor\engine\src\anchor.c-1913-            #ifndef __EMSCRIPTEN__
E:\a327ex\Anchor\engine\src\anchor.c-1914-            // Fullscreen toggle only on desktop
E:\a327ex\Anchor\engine\src\anchor.c-1915-            if (event.key.keysym.sym == SDLK_F11 ||
E:\a327ex\Anchor\engine\src\anchor.c-1916-                (event.key.keysym.sym == SDLK_RETURN && (event.key.keysym.mod & KMOD_ALT))) {
E:\a327ex\Anchor\engine\src\anchor.c-1917-                Uint32 flags = SDL_GetWindowFlags(window);
E:\a327ex\Anchor\engine\src\anchor.c-1918-                SDL_SetWindowFullscreen(window, (flags & SDL_WINDOW_FULLSCREEN_DESKTOP) ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
E:\a327ex\Anchor\engine\src\anchor.c-1919-            }
E:\a327ex\Anchor\engine\src\anchor.c-1920-            #endif
E:\a327ex\Anchor\engine\src\anchor.c-1921-        }
E:\a327ex\Anchor\engine\src\anchor.c-1922-        if (event.type == SDL_KEYUP) {
E:\a327ex\Anchor\engine\src\anchor.c-1923-            SDL_Scancode sc = event.key.keysym.scancode;
E:\a327ex\Anchor\engine\src\anchor.c-1924-            if (sc < SDL_NUM_SCANCODES) {
E:\a327ex\Anchor\engine\src\anchor.c-1925-                keys_current[sc] = false;
E:\a327ex\Anchor\engine\src\anchor.c-1926-            }
E:\a327ex\Anchor\engine\src\anchor.c-1927-        }
E:\a327ex\Anchor\engine\src\anchor.c-1928-        // Track mouse motion
E:\a327ex\Anchor\engine\src\anchor.c:1929:        if (event.type == SDL_MOUSEMOTION) {
E:\a327ex\Anchor\engine\src\anchor.c-1930-            mouse_x = event.motion.x;
E:\a327ex\Anchor\engine\src\anchor.c-1931-            mouse_y = event.motion.y;
E:\a327ex\Anchor\engine\src\anchor.c-1932-            mouse_dx += event.motion.xrel;
E:\a327ex\Anchor\engine\src\anchor.c-1933-            mouse_dy += event.motion.yrel;
E:\a327ex\Anchor\engine\src\anchor.c-1934-        }
E:\a327ex\Anchor\engine\src\anchor.c-1935-        // Track mouse buttons
E:\a327ex\Anchor\engine\src\anchor.c-1936-        if (event.type == SDL_MOUSEBUTTONDOWN) {
E:\a327ex\Anchor\engine\src\anchor.c-1937-            int btn = event.button.button - 1;  // SDL buttons are 1-indexed
E:\a327ex\Anchor\engine\src\anchor.c-1938-            if (btn >= 0 && btn < MAX_MOUSE_BUTTONS) {
... [11 more lines]

Excellent, all the mouse event handling has been added. The implementation for Step 2 looks complete. Let me now build the engine and update the test file to verify mouse input works.

anchor.c

src/anchor.c(1136): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

The build succeeded. Now let me update the test file to include mouse input testing. I should add:
- A circle that follows the mouse position
- Test mouse_is_pressed/released
- Test mouse_delta for maybe some visual feedback
- Maybe show wheel scrolling

1→print("main.lua loaded - Input Test (Step 1: Raw Keyboard)")
     2→
     3→set_shape_filter("rough")
     4→
     5→local screen_w, screen_h = 480, 270
     6→
     7→-- Background color from twitter_emoji theme (48, 49, 50)
     8→local bg_color = rgba(231, 232, 233, 255)
     9→
    10→-- Create layers (order matters: first = bottom, last = top)
    11→local bg_layer = layer_create('background')
    12→local shadow_layer = layer_create('shadow')
    13→local outline_layer = layer_create('outline')
    14→local game_layer = layer_create('game')
    15→
    16→-- Load shaders
    17→local shadow_shader = shader_load_file('shaders/shadow.frag')
    18→local outline_shader = shader_load_file('shaders/outline.frag')
    19→print("Shadow shader loaded: " .. tostring(shadow_shader))
    20→print("Outline shader loaded: " .. tostring(outline_shader))
    21→
    22→-- Load textures
    23→local smile_tex = texture_load("assets/slight_smile.png")
    24→local star_tex = texture_load("assets/star.png")
    25→
    26→-- Target display sizes
    27→local smile_size = 36
    28→local star_size = 14
    29→
    30→-- Calculate scale factors (textures are 512x512)
... [180 more lines]

I'll update the test to add mouse functionality:
1. A cursor circle that follows the mouse position
2. Change ball color when left-clicking (mouse_is_down)
3. Print messages for mouse_is_pressed/released
4. Change ball size based on scroll wheel

Let me update the test file:

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→print("main.lua loaded - Input Test (Step 2: Mouse)")
     2→
     3→set_shape_filter("rough")
     4→
     5→local screen_w, screen_h = 480, 270

Now I'll add the mouse test state and update the update function to include mouse tests.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    75→local star_spin_speed = 3.0
    76→
    77→local game_time = 0
    78→
    79→-- Input test state
    80→local move_speed = 150
    81→local pressed_flash = 0  -- Flash timer when space is pressed
    82→local mouse_click_flash = 0  -- Flash timer when mouse is clicked
    83→local cursor_radius = 8  -- Cursor size (affected by scroll wheel)
    84→
    85→-- Helper to draw objects only (no background) - for outline layer
    86→local function draw_objects(layer)
    87→    -- Draw ball (flashes white when space is pressed)

Now I need to update the draw_objects function to draw a cursor, and update the update function to handle mouse input. Let me add a cursor drawing and mouse input handling.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    81→local pressed_flash = 0  -- Flash timer when space is pressed
    82→local mouse_click_flash = 0  -- Flash timer when mouse is clicked
    83→local cursor_radius = 8  -- Cursor size (affected by scroll wheel)
    84→
    85→-- Helper to draw objects only (no background) - for outline layer
    86→local function draw_objects(layer)
    87→    -- Draw ball (flashes white when space or mouse is pressed)
    88→    local r, g, b = hsv_to_rgb(ball.hue, 1, 1)
    89→    local flash = math.max(pressed_flash, mouse_click_flash)
    90→    if flash > 0 then
    91→        -- Flash to white
    92→        local flash_t = flash / 0.3
    93→        r = math.floor(r + (255 - r) * flash_t)
    94→        g = math.floor(g + (255 - g) * flash_t)
    95→        b = math.floor(b + (255 - b) * flash_t)
    96→    end
    97→    layer_circle(layer, ball.x, ball.y, ball.radius, rgba(r, g, b, 255))
    98→
    99→    -- Draw mouse cursor (green when clicking, white otherwise)
   100→    local mx, my = mouse_position()
   101→    local cursor_color
   102→    if mouse_is_down(1) then
   103→        cursor_color = rgba(100, 255, 100, 255)  -- Green when left click
   104→    elseif mouse_is_down(2) then
   105→        cursor_color = rgba(255, 100, 100, 255)  -- Red when right click
   106→    elseif mouse_is_down(3) then
   107→        cursor_color = rgba(100, 100, 255, 255)  -- Blue when middle click
   108→    else
   109→        cursor_color = rgba(255, 255, 255, 255)  -- White normally
... [6 more lines]

Now I need to add the mouse input handling to the update function - detecting pressed/released events, handling scroll wheel, and maybe testing mouse delta.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   156→        pressed_flash = 0.3
   157→        print("Space PRESSED!")
   158→    end
   159→
   160→    -- Check key_is_released
   161→    if key_is_released('space') then
   162→        print("Space RELEASED!")
   163→    end
   164→
   165→    -- === Mouse input tests ===
   166→    -- Check mouse_is_pressed for flash effect
   167→    if mouse_is_pressed(1) then
   168→        mouse_click_flash = 0.3
   169→        print("Left mouse PRESSED!")
   170→    end
   171→    if mouse_is_pressed(2) then
   172→        print("Right mouse PRESSED!")
   173→    end
   174→    if mouse_is_pressed(3) then
   175→        print("Middle mouse PRESSED!")
   176→    end
   177→
   178→    -- Check mouse_is_released
   179→    if mouse_is_released(1) then
   180→        print("Left mouse RELEASED!")
   181→    end
   182→
   183→    -- Scroll wheel changes cursor size
   184→    local wheel_x, wheel_y = mouse_wheel()
... [26 more lines]

The test is now updated with mouse input testing:
- A cursor circle follows the mouse position
- The cursor changes color based on which mouse button is held (green=left, red=right, blue=middle, white=none)
- Left click causes a flash effect on the ball
- Print statements for mouse pressed/released
- Scroll wheel changes the cursor size
- Mouse delta is tracked (but only significant movements are printed, and it's commented out to avoid spam)

Now let me build the engine again to make sure everything is good, then let the user test.

anchor.c

src/anchor.c(1136): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Build succeeded. Now I should let the user test the mouse functionality on Windows. After they confirm it works, I'll build for web as well.

The user reports two issues:
1. Middle and right buttons are flipped
2. Mouse delta never prints

For issue 1: In SDL, mouse buttons are:
- SDL_BUTTON_LEFT = 1
- SDL_BUTTON_MIDDLE = 2
- SDL_BUTTON_RIGHT = 3

So button 2 is middle, button 3 is right. But in my Lua test code, I have:
- mouse_is_down(2) → red (right click)
- mouse_is_down(3) → blue (middle click)

That's backwards! I should have:
- mouse_is_down(2) → middle click
- mouse_is_down(3) → right click

For issue 2: Mouse delta never prints. Let me check the code. In the test, I have:
```lua
local dx, dy = mouse_delta()
if math.abs(dx) > 10 or math.abs(dy) > 10 then
    -- Only print large movements to avoid spam
    -- print("Mouse delta: " .. dx .. ", " .. dy)
end
```

The print is commented out! That's why it never prints. But also, let me check if mouse_delta is even working correctly in the C code. Let me look at the implementation.

Actually, the print is commented out on purpose to avoid spam. But let me enable it and also fix the button issue in the test file. Let me also check the C implementation of mouse_delta to make sure it's correct.

1408-
1409-// Mouse Lua bindings
1410-static int l_mouse_position(lua_State* L) {
1411-    float gx, gy;
1412-    mouse_to_game_coords(mouse_x, mouse_y, &gx, &gy);
1413-    lua_pushnumber(L, gx);
1414-    lua_pushnumber(L, gy);
1415-    return 2;
1416-}
1417-
1418:static int l_mouse_delta(lua_State* L) {
1419-    // Delta is in window pixels, scale to game pixels
1420-    int window_w, window_h;
1421-    SDL_GetWindowSize(window, &window_w, &window_h);
1422-    float scale_x = (float)window_w / GAME_WIDTH;
1423-    float scale_y = (float)window_h / GAME_HEIGHT;
1424-    float scale = (scale_x < scale_y) ? scale_x : scale_y;
1425-    int int_scale = (int)scale;
1426-    if (int_scale < 1) int_scale = 1;
1427-
1428-    lua_pushnumber(L, (float)mouse_dx / int_scale);
--
1505-    lua_register(L, "layer_apply_shader", l_layer_apply_shader);
1506-    lua_register(L, "layer_draw", l_layer_draw);
1507-    lua_register(L, "layer_get_texture", l_layer_get_texture);
1508-    lua_register(L, "layer_reset_effects", l_layer_reset_effects);
1509-    // Input - Keyboard
1510-    lua_register(L, "key_is_down", l_key_is_down);
1511-    lua_register(L, "key_is_pressed", l_key_is_pressed);
1512-    lua_register(L, "key_is_released", l_key_is_released);
... [13 more lines]

The mouse_delta implementation looks fine. Let me see the full function and also check where input_post_update is called - it resets mouse_dx and mouse_dy to 0, so maybe it's being called at the wrong time (before the Lua update function has a chance to read the values).

Let me check input_post_update and when it's called.

652-
653-    return SDL_SCANCODE_UNKNOWN;
654-}
655-
656-// Copy current input state to previous (called at end of physics frame)
657:static void input_post_update(void) {
658-    memcpy(keys_previous, keys_current, sizeof(keys_previous));
659-    memcpy(mouse_buttons_previous, mouse_buttons_current, sizeof(mouse_buttons_previous));
660-    // Reset per-frame deltas
661-    mouse_dx = 0;
662-    mouse_dy = 0;
--
1988-        step++;
1989-        game_time += PHYSICS_RATE;
1990-        physics_lag -= PHYSICS_RATE;
1991-
1992-        // Copy current input state to previous for next frame's edge detection
1993:        input_post_update();
1994-    }
1995-
1996-    // Render at 60Hz (for chunky pixel movement on high-refresh monitors)
1997-    if (render_lag >= RENDER_RATE) {
1998-        render_lag -= RENDER_RATE;

I see the problem now. The `input_post_update()` is called at the end of the physics loop iteration, which resets `mouse_dx` and `mouse_dy` to 0. But the mouse motion events accumulate these deltas during the SDL event poll, which happens once at the start of the frame. Then:

1. Events are polled (mouse_dx/dy accumulate)
2. Physics update loop runs N times
3. Each physics iteration calls input_post_update() which resets mouse_dx/dy to 0

So after the first physics iteration, mouse_dx/dy are 0. The Lua update function is called within the physics loop, so it should still see the values... but wait, let me trace through more carefully.

Looking at the loop structure:
1. Poll events (accumulate mouse_dx/dy)
2. Physics loop:
   - Call Lua update with dt
   - Call input_post_update() (resets mouse_dx/dy)
3. Render

So the first physics iteration should see the correct mouse_dx/dy values. Let me check if the Lua test code actually prints - oh wait, I commented out the print statement! Let me check the test code.

Actually, looking at the test code:
```lua
local dx, dy = mouse_delta()
if math.abs(dx) > 10 or math.abs(dy) > 10 then
    -- Only print large movements to avoid spam
    -- print("Mouse delta: " .. dx .. ", " .. dy)
end
```

The print is commented out! That's why it never prints. Let me uncomment it.

Also, the button mapping issue: SDL defines:
- SDL_BUTTON_LEFT = 1
- SDL_BUTTON_MIDDLE = 2
- SDL_BUTTON_RIGHT = 3

So in the test code:
- mouse_is_down(2) should be middle click → should be blue
- mouse_is_down(3) should be right click → should be red


But I had them swapped in the test. I need to fix the print statement and correct the button mappings.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    95→        b = math.floor(b + (255 - b) * flash_t)
    96→    end
    97→    layer_circle(layer, ball.x, ball.y, ball.radius, rgba(r, g, b, 255))
    98→
    99→    -- Draw mouse cursor (green when clicking, white otherwise)
   100→    local mx, my = mouse_position()
   101→    local cursor_color
   102→    if mouse_is_down(1) then
   103→        cursor_color = rgba(100, 255, 100, 255)  -- Green when left click
   104→    elseif mouse_is_down(2) then
   105→        cursor_color = rgba(100, 100, 255, 255)  -- Blue when middle click (SDL button 2)
   106→    elseif mouse_is_down(3) then
   107→        cursor_color = rgba(255, 100, 100, 255)  -- Red when right click (SDL button 3)
   108→    else
   109→        cursor_color = rgba(255, 255, 255, 255)  -- White normally
   110→    end
   111→    layer_circle(layer, mx, my, cursor_radius, cursor_color)
   112→
   113→    -- Draw emoji (disappears when holding shift)
   114→    if not key_is_down('shift') then
   115→        layer_push(layer, emoji.x, emoji.y, emoji.rotation, smile_scale, smile_scale)

Now let me also fix the print statements for mouse buttons and uncomment the mouse delta print:

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   167→    if mouse_is_pressed(1) then
   168→        mouse_click_flash = 0.3
   169→        print("Left mouse PRESSED!")
   170→    end
   171→    if mouse_is_pressed(2) then
   172→        print("Middle mouse PRESSED!")  -- SDL button 2 = middle
   173→    end
   174→    if mouse_is_pressed(3) then
   175→        print("Right mouse PRESSED!")  -- SDL button 3 = right
   176→    end
   177→
   178→    -- Check mouse_is_released
   179→    if mouse_is_released(1) then
   180→        print("Left mouse RELEASED!")

Now let me uncomment the mouse delta print and lower the threshold so it prints more often:

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   189→    if wheel_x ~= 0 then
   190→        print("Wheel X: " .. wheel_x)
   191→    end
   192→
   193→    -- Test mouse_delta (print when significant movement)
   194→    local dx, dy = mouse_delta()
   195→    if math.abs(dx) > 5 or math.abs(dy) > 5 then
   196→        print("Mouse delta: " .. dx .. ", " .. dy)
   197→    end
   198→
   199→    -- Decay flash timers
   200→    if pressed_flash > 0 then
   201→        pressed_flash = pressed_flash - dt

Fixed both issues. Let me build and have the user test again.

anchor.c

src/anchor.c(1136): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Build successful. Let the user test again.

The user says middle and right mouse buttons never trigger release events. Let me check the mouse_is_released implementation and also make sure we're handling release events for all buttons in the test.

First, let me check the C implementation of mouse_is_released:

1455-static int l_mouse_is_pressed(lua_State* L) {
1456-    int button = (int)luaL_checkinteger(L, 1);
1457-    if (button < 1 || button > MAX_MOUSE_BUTTONS) {
1458-        lua_pushboolean(L, 0);
1459-    } else {
1460-        lua_pushboolean(L, mouse_buttons_current[button - 1] && !mouse_buttons_previous[button - 1]);
1461-    }
1462-    return 1;
1463-}
1464-
1465:static int l_mouse_is_released(lua_State* L) {
1466-    int button = (int)luaL_checkinteger(L, 1);
1467-    if (button < 1 || button > MAX_MOUSE_BUTTONS) {
1468-        lua_pushboolean(L, 0);
1469-    } else {
1470-        lua_pushboolean(L, !mouse_buttons_current[button - 1] && mouse_buttons_previous[button - 1]);
1471-    }
1472-    return 1;
1473-}
1474-
1475-static int l_mouse_wheel(lua_State* L) {
--
1510-    lua_register(L, "key_is_down", l_key_is_down);
1511-    lua_register(L, "key_is_pressed", l_key_is_pressed);
1512-    lua_register(L, "key_is_released", l_key_is_released);
1513-    // Input - Mouse
1514-    lua_register(L, "mouse_position", l_mouse_position);
1515-    lua_register(L, "mouse_delta", l_mouse_delta);
1516-    lua_register(L, "mouse_set_visible", l_mouse_set_visible);
1517-    lua_register(L, "mouse_set_grabbed", l_mouse_set_grabbed);
... [13 more lines]

The C implementation looks correct. The issue is that the test code only checks for release events on button 1:

```lua
-- Check mouse_is_released
if mouse_is_released(1) then
    print("Left mouse RELEASED!")
end
```

It doesn't have checks for buttons 2 and 3! I need to add those to the test.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   174→    if mouse_is_pressed(3) then
   175→        print("Right mouse PRESSED!")  -- SDL button 3 = right
   176→    end
   177→
   178→    -- Check mouse_is_released
   179→    if mouse_is_released(1) then
   180→        print("Left mouse RELEASED!")
   181→    end
   182→    if mouse_is_released(2) then
   183→        print("Middle mouse RELEASED!")
   184→    end
   185→    if mouse_is_released(3) then
   186→        print("Right mouse RELEASED!")
   187→    end
   188→
   189→    -- Scroll wheel changes cursor size
   190→    local wheel_x, wheel_y = mouse_wheel()
   191→    if wheel_y ~= 0 then

That was a test bug, not an engine bug. No rebuild needed since it's just Lua. Ready for testing.

Step 2 is complete. Let me update the todo list and build the web version first, then move on to Step 3: Basic action binding.

- [completed] Step 1: Raw keyboard state
- [completed] Step 2: Mouse state
- [in_progress] Step 3: Basic action binding
- [pending] Step 4: Unbinding and bind_all
- [pending] Step 5: Axis helpers
- [pending] Step 6: Gamepad support
- [pending] Step 7: Chords
- [pending] Step 8: Sequences
- [pending] Step 9: Holds
- [pending] Step 10: Input type detection
- [pending] Step 11: Rebinding capture
- [pending] Step 12: Utility functions

Now let me build the web version first before moving on, as per the workflow from the previous session.

Exit code 127
/usr/bin/bash: line 1: ./build-web.bat: No such file or directory

Let me check what build scripts exist for web.

E:/a327ex/Anchor/engine\run-web.bat
E:/a327ex/Anchor/engine\build-web.sh

It's a .sh file, not .bat. Let me use that.

Exit code 1
Usage: ./build-web.sh <game-folder>
Example: ./build-web.sh ../test

I need to specify the game folder.

Building with game folder: ../test
Build successful: build-web/anchor.html
To test: cd build-web && python -m http.server 8000
Then open: http://localhost:8000/anchor.html

Web build successful. Now let me implement Step 3: Basic action binding.

From the implementation plan, Step 3 is:
- `input_bind(action, control)` - bind a control to an action
- `input_is_down(action)`, `input_is_pressed(action)`, `input_is_released(action)`
- Control string format: `'key:space'`, `'mouse:1'`

I need to:
1. Create a data structure to store action bindings (action name → list of controls)
2. Parse control strings like 'key:space', 'mouse:1'
3. Implement the input_bind function
4. Implement input_is_down/pressed/released that check all bound controls

Let me read the implementation plan to refresh my memory on the exact requirements.

200→
   201→---
   202→
   203→### Implementation Steps
   204→
   205→**Step 1: Read existing code** ✓
   206→- [x] Understand Phase 1 & 2 code (window, GL context, shaders, Lua)
   207→
   208→**Step 2: Layer struct + single FBO** ✓
   209→- [x] Layer struct: FBO, color texture, width/height, transform stack (32 deep)
   210→- [x] `layer_create()` / `layer_destroy()` C functions
   211→- [x] Replace hardcoded fbo/fbo_texture with `game_layer`
   212→- [x] Initialize transform stack to identity at depth 0
   213→
   214→**Step 3: DrawCommand + command queue (C only)** ✓
   215→- [x] DrawCommand struct: type, blend_mode, color, transform (2x3), params
   216→- [x] Command queue with dynamic growth (`layer_add_command`)
   217→- [x] C functions: `layer_add_rectangle`, `layer_add_circle`, `layer_clear_commands`
   218→
   219→**Step 4: Rectangle rendering + Lua bindings** ✓
   220→- [x] Batch rendering system (`batch_flush`, `batch_add_vertex`, `batch_add_quad`)
   221→- [x] `process_rectangle()` — transform vertices, add to batch
   222→- [x] `layer_render()` — iterate commands, build vertices, flush
   223→- [x] Lua bindings: `layer_create()`, `layer_rectangle()`, `rgba()`
   224→- [x] Verified on Windows and Web
   225→
   226→**Step 5: Circle with SDF uber-shader** ✓
   227→- [x] Expand vertex format to 13 floats: x, y, u, v, r, g, b, a, type, shape[4]
   228→- [x] Update VAO with 5 vertex attributes (pos, uv, color, type, shape)
   229→- [x] Uber-shader with SDF functions and type branching (RECT, CIRCLE, SPRITE)
... [70 more lines]

Let me continue reading to find Phase 5 implementation steps.

501:**Step 3: Basic action binding**
502-- [ ] Action struct: name, array of controls, pressed/down/released state
503-- [ ] Control struct: type (KEY, MOUSE, BUTTON, AXIS), code, sign (for axes)
504-- [ ] `input_bind(action, controls)` — parse control strings, add to action
505-- [ ] `is_pressed(action)` — true if any bound control just pressed
506-- [ ] `is_down(action)` — true if any bound control held (returns axis value if analog)
507-- [ ] `is_released(action)` — true if any bound control just released
508-- [ ] Per-frame action state computation from raw input states
509-- [ ] Track last input type per action query (for Step 10)
510-
511-**Step 4: Unbinding and bind_all**
512-- [ ] `input_unbind(action, control)` — remove specific control from action
513-- [ ] `input_unbind_all(action)` — remove all controls from action
514-- [ ] `input_bind_all()` — bind every key/button to action with same name
515-  - All keyboard keys → `'a'`, `'space'`, `'left'`, etc.
516-  - Mouse buttons → `'mouse_1'`, `'mouse_2'`, `'wheel_up'`, `'wheel_down'`
517-
518-**Step 5: Axis helpers**
519-- [ ] `input_get_axis(negative, positive)` — returns -1 to 1
520-  - Digital: `is_down(positive) - is_down(negative)`
521-  - Analog: uses actual axis values if bound to gamepad axis
522-- [ ] `input_get_vector(left, right, up, down)` — returns x, y
523-  - Normalized to prevent faster diagonal movement
524-  - `len = sqrt(x*x + y*y); if len > 1 then x, y = x/len, y/len`
525-
526-**Step 6: Gamepad support**
527-- [ ] SDL gamepad initialization and hotplug handling
528-- [ ] `gamepad_is_connected()` — true if at least one gamepad connected
529-- [ ] `gamepad_get_axis(axis)` — raw axis value (-1 to 1)
530-  - Axes: `'leftx'`, `'lefty'`, `'rightx'`, `'righty'`, `'triggerleft'`, `'triggerright'`
... [1 more lines]

Now I have a clear picture of Step 3. I need to:

1. Create an Action struct with:
   - name
   - array of controls
   - pressed/down/released state (computed per frame)

2. Create a Control struct with:
   - type (KEY, MOUSE, BUTTON, AXIS)
   - code (scancode for keys, button number for mouse, etc.)
   - sign (for axes: + or -)

3. Implement:
   - `input_bind(action, control)` - parse control string like 'key:space', 'mouse:1', add to action
   - `is_pressed(action)` - true if any bound control just pressed
   - `is_down(action)` - true if any bound control held
   - `is_released(action)` - true if any bound control just released

4. Per-frame action state computation

Control string format: 'key:space', 'mouse:1', 'button:a', 'axis:leftx+'

Let me implement this in anchor.c. I'll need to add the data structures and functions.

545→} LayerDrawCommand;
   546→
   547→#define MAX_LAYER_DRAWS 64
   548→static LayerDrawCommand layer_draw_queue[MAX_LAYER_DRAWS];
   549→static int layer_draw_count = 0;
   550→
   551→// Input state - Keyboard
   552→static bool keys_current[SDL_NUM_SCANCODES] = {0};
   553→static bool keys_previous[SDL_NUM_SCANCODES] = {0};
   554→
   555→// Input state - Mouse
   556→#define MAX_MOUSE_BUTTONS 5
   557→static bool mouse_buttons_current[MAX_MOUSE_BUTTONS] = {0};
   558→static bool mouse_buttons_previous[MAX_MOUSE_BUTTONS] = {0};
   559→static int mouse_x = 0, mouse_y = 0;           // Window coordinates
   560→static int mouse_dx = 0, mouse_dy = 0;         // Delta this frame
   561→static int mouse_wheel_x = 0, mouse_wheel_y = 0; // Wheel delta this frame
   562→
   563→// Convert key name string to SDL scancode
   564→static SDL_Scancode key_name_to_scancode(const char* name) {
   565→    if (!name) return SDL_SCANCODE_UNKNOWN;
   566→
   567→    // Single character keys (a-z, 0-9)
   568→    if (strlen(name) == 1) {
   569→        char c = name[0];
   570→        if (c >= 'a' && c <= 'z') return SDL_SCANCODE_A + (c - 'a');
   571→        if (c >= 'A' && c <= 'Z') return SDL_SCANCODE_A + (c - 'A');
   572→        if (c >= '0' && c <= '9') return SDL_SCANCODE_0 + (c - '0');
   573→    }
   574→
... [100 more lines]

Now I need to add the action binding system. I'll add:
1. Control type enum (KEY, MOUSE_BUTTON for now, GAMEPAD_BUTTON and AXIS later)
2. Control struct
3. Action struct with name and array of controls
4. Action registry (array of actions)
5. Functions to bind controls, query action state

I'll add this after the mouse_to_game_coords function but before the Lua bindings.

Let me find a good place to insert this code - after input_post_update and mouse_to_game_coords.

685→
   686→    // Convert to game coordinates
   687→    float gx = (float)(win_x - offset_x) / int_scale;
   688→    float gy = (float)(win_y - offset_y) / int_scale;
   689→
   690→    *game_x = gx;
   691→    *game_y = gy;
   692→
   693→    // Check if inside game area
   694→    return (gx >= 0 && gx < GAME_WIDTH && gy >= 0 && gy < GAME_HEIGHT);
   695→}
   696→
   697→// Queue a layer to be drawn to screen at given offset
   698→static void layer_queue_draw(Layer* layer, float x, float y) {
   699→    if (layer_draw_count >= MAX_LAYER_DRAWS) return;
   700→    layer_draw_queue[layer_draw_count].layer = layer;
   701→    layer_draw_queue[layer_draw_count].x = x;
   702→    layer_draw_queue[layer_draw_count].y = y;
   703→    layer_draw_count++;
   704→}
   705→
   706→// Queue a shader application command (deferred - actual work done at frame end)
   707→static void layer_apply_shader(Layer* layer, GLuint shader) {
   708→    if (!shader) return;
   709→    if (layer->command_count >= MAX_COMMAND_CAPACITY) return;
   710→
   711→    DrawCommand* cmd = &layer->commands[layer->command_count++];
   712→    memset(cmd, 0, sizeof(DrawCommand));
   713→    cmd->type = COMMAND_APPLY_SHADER;
   714→    cmd->texture_id = shader;  // Reuse texture_id field for shader handle
... [20 more lines]

Good, I found that mouse_to_game_coords ends at line 695. I should add the action binding system after line 695 (after mouse_to_game_coords) and before line 697 (layer_queue_draw). Let me add the action binding data structures and functions.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   689→
   690→    *game_x = gx;
   691→    *game_y = gy;
   692→
   693→    // Check if inside game area
   694→    return (gx >= 0 && gx < GAME_WIDTH && gy >= 0 && gy < GAME_HEIGHT);
   695→}
   696→
   697→// Action binding system
   698→typedef enum {
   699→    CONTROL_KEY,
   700→    CONTROL_MOUSE_BUTTON,
   701→    CONTROL_GAMEPAD_BUTTON,  // For Step 6
   702→    CONTROL_GAMEPAD_AXIS,    // For Step 6
   703→} ControlType;
   704→
   705→typedef struct {
   706→    ControlType type;
   707→    int code;       // Scancode for keys, button number for mouse/gamepad
   708→    int sign;       // For axes: +1 or -1 (positive or negative direction)
   709→} Control;
   710→
   711→#define MAX_CONTROLS_PER_ACTION 8
   712→#define MAX_ACTIONS 64
   713→#define MAX_ACTION_NAME 32
   714→
   715→typedef struct {
   716→    char name[MAX_ACTION_NAME];
   717→    Control controls[MAX_CONTROLS_PER_ACTION];
... [187 more lines]

Now I need to add the Lua bindings for these functions. Let me find the Lua bindings section and add them.

1668-static int l_mouse_is_released(lua_State* L) {
1669-    int button = (int)luaL_checkinteger(L, 1);
1670-    if (button < 1 || button > MAX_MOUSE_BUTTONS) {
1671-        lua_pushboolean(L, 0);
1672-    } else {
1673-        lua_pushboolean(L, !mouse_buttons_current[button - 1] && mouse_buttons_previous[button - 1]);
1674-    }
1675-    return 1;
1676-}
1677-
1678:static int l_mouse_wheel(lua_State* L) {
1679-    lua_pushinteger(L, mouse_wheel_x);
1680-    lua_pushinteger(L, mouse_wheel_y);
1681-    return 2;
1682-}
1683-
1684-static void register_lua_bindings(lua_State* L) {
1685-    lua_register(L, "layer_create", l_layer_create);
1686-    lua_register(L, "layer_rectangle", l_layer_rectangle);
1687-    lua_register(L, "layer_circle", l_layer_circle);
1688-    lua_register(L, "layer_push", l_layer_push);
--
1714-    lua_register(L, "key_is_pressed", l_key_is_pressed);
1715-    lua_register(L, "key_is_released", l_key_is_released);
1716-    // Input - Mouse
1717-    lua_register(L, "mouse_position", l_mouse_position);
1718-    lua_register(L, "mouse_delta", l_mouse_delta);
1719-    lua_register(L, "mouse_set_visible", l_mouse_set_visible);
1720-    lua_register(L, "mouse_set_grabbed", l_mouse_set_grabbed);
1721-    lua_register(L, "mouse_is_down", l_mouse_is_down);
... [13 more lines]

I found the location. I need to add Lua bindings for:
- input_bind(action, control)
- is_down(action)
- is_pressed(action)
- is_released(action)

Let me add the Lua binding functions after l_mouse_wheel and before register_lua_bindings, then register them.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1674→    }
  1675→    return 1;
  1676→}
  1677→
  1678→static int l_mouse_wheel(lua_State* L) {
  1679→    lua_pushinteger(L, mouse_wheel_x);
  1680→    lua_pushinteger(L, mouse_wheel_y);
  1681→    return 2;
  1682→}
  1683→
  1684→// Action binding Lua bindings
  1685→static int l_input_bind(lua_State* L) {
  1686→    const char* action = luaL_checkstring(L, 1);
  1687→    const char* control = luaL_checkstring(L, 2);
  1688→    lua_pushboolean(L, input_bind_control(action, control));
  1689→    return 1;
  1690→}
  1691→
  1692→static int l_is_down(lua_State* L) {
  1693→    const char* action = luaL_checkstring(L, 1);
  1694→    lua_pushboolean(L, action_is_down(action));
  1695→    return 1;
  1696→}
  1697→
  1698→static int l_is_pressed(lua_State* L) {
  1699→    const char* action = luaL_checkstring(L, 1);
  1700→    lua_pushboolean(L, action_is_pressed(action));
  1701→    return 1;
  1702→}
... [12 more lines]

Now I need to register these new Lua bindings in the register_lua_bindings function. Let me find the right place to add them.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1745→    lua_register(L, "mouse_set_visible", l_mouse_set_visible);
  1746→    lua_register(L, "mouse_set_grabbed", l_mouse_set_grabbed);
  1747→    lua_register(L, "mouse_is_down", l_mouse_is_down);
  1748→    lua_register(L, "mouse_is_pressed", l_mouse_is_pressed);
  1749→    lua_register(L, "mouse_is_released", l_mouse_is_released);
  1750→    lua_register(L, "mouse_wheel", l_mouse_wheel);
  1751→    // Input - Action binding
  1752→    lua_register(L, "input_bind", l_input_bind);
  1753→    lua_register(L, "is_down", l_is_down);
  1754→    lua_register(L, "is_pressed", l_is_pressed);
  1755→    lua_register(L, "is_released", l_is_released);
  1756→}
  1757→
  1758→// Main loop state (needed for emscripten)
  1759→static bool running = true;
  1760→static Uint64 perf_freq = 0;

Good, now let me build and then update the test to use action binding instead of raw input.

anchor.c

src/anchor.c(738): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1339): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Build successful. Now let me update the test to use action bindings instead of raw input.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→print("main.lua loaded - Input Test (Step 3: Action Binding)")
     2→
     3→set_shape_filter("rough")
     4→
     5→local screen_w, screen_h = 480, 270
     6→
     7→-- Set up action bindings
     8→input_bind('move_up', 'key:w')
     9→input_bind('move_up', 'key:up')
    10→input_bind('move_down', 'key:s')
    11→input_bind('move_down', 'key:down')
    12→input_bind('move_left', 'key:a')
    13→input_bind('move_left', 'key:left')
    14→input_bind('move_right', 'key:d')
    15→input_bind('move_right', 'key:right')
    16→input_bind('action', 'key:space')
    17→input_bind('action', 'mouse:1')  -- Left click also triggers action
    18→print("Action bindings set up")
    19→
    20→-- Background color from twitter_emoji theme (48, 49, 50)
    21→local bg_color = rgba(231, 232, 233, 255)
    22→

Now let me update the movement code and action trigger code to use actions instead of raw input:

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   150→
   151→function update(dt)
   152→    game_time = game_time + dt
   153→
   154→    -- === Input Test: Control ball with action bindings ===
   155→    local move_x, move_y = 0, 0
   156→
   157→    -- Use is_down for movement (held) - now uses actions!
   158→    if is_down('move_up') then move_y = -1 end
   159→    if is_down('move_down') then move_y = 1 end
   160→    if is_down('move_left') then move_x = -1 end
   161→    if is_down('move_right') then move_x = 1 end
   162→
   163→    -- Apply movement
   164→    ball.x = ball.x + move_x * move_speed * dt
   165→    ball.y = ball.y + move_y * move_speed * dt
   166→
   167→    -- Check is_pressed for flash effect - triggers on space OR left click
   168→    if is_pressed('action') then
   169→        pressed_flash = 0.3
   170→        print("ACTION PRESSED! (space or left click)")
   171→    end
   172→
   173→    -- Check is_released
   174→    if is_released('action') then
   175→        print("ACTION RELEASED!")
   176→    end
   177→
   178→    -- === Raw mouse tests (for cursor color, wheel, delta) ===
... [17 more lines]

I also need to remove the mouse_click_flash logic since we're now using the unified 'action' binding. Let me also fix the flash decay code to remove the reference to mouse_click_flash.

95→local mouse_click_flash = 0  -- Flash timer when mouse is clicked
    96→local cursor_radius = 8  -- Cursor size (affected by scroll wheel)
    97→
    98→-- Helper to draw objects only (no background) - for outline layer
    99→local function draw_objects(layer)
   100→    -- Draw ball (flashes white when space or mouse is pressed)
   101→    local r, g, b = hsv_to_rgb(ball.hue, 1, 1)
   102→    local flash = math.max(pressed_flash, mouse_click_flash)
   103→    if flash > 0 then
   104→        -- Flash to white
   105→        local flash_t = flash / 0.3
   106→        r = math.floor(r + (255 - r) * flash_t)
   107→        g = math.floor(g + (255 - g) * flash_t)
   108→        b = math.floor(b + (255 - b) * flash_t)
   109→    end
   110→    layer_circle(layer, ball.x, ball.y, ball.radius, rgba(r, g, b, 255))
   111→
   112→    -- Draw mouse cursor (green when clicking, white otherwise)
   113→    local mx, my = mouse_position()
   114→    local cursor_color

I see the mouse_click_flash is still referenced. Let me simplify by removing it and just using pressed_flash:

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    90→local game_time = 0
    91→
    92→-- Input test state
    93→local move_speed = 150
    94→local pressed_flash = 0  -- Flash timer when action is triggered
    95→local cursor_radius = 8  -- Cursor size (affected by scroll wheel)
    96→
    97→-- Helper to draw objects only (no background) - for outline layer
    98→local function draw_objects(layer)
    99→    -- Draw ball (flashes white when space or mouse is pressed)

Now let me fix the flash calculation in draw_objects to remove the reference to mouse_click_flash:

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    93→local move_speed = 150
    94→local pressed_flash = 0  -- Flash timer when action is triggered
    95→local cursor_radius = 8  -- Cursor size (affected by scroll wheel)
    96→
    97→-- Helper to draw objects only (no background) - for outline layer
    98→local function draw_objects(layer)
    99→    -- Draw ball (flashes white when action is triggered)
   100→    local r, g, b = hsv_to_rgb(ball.hue, 1, 1)
   101→    if pressed_flash > 0 then
   102→        -- Flash to white
   103→        local flash_t = flash / 0.3
   104→        r = math.floor(r + (255 - r) * flash_t)
   105→        g = math.floor(g + (255 - g) * flash_t)

Oops, I introduced a bug - now I'm using `flash` variable which doesn't exist anymore. Let me fix that to use `pressed_flash`:

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    97→-- Helper to draw objects only (no background) - for outline layer
    98→local function draw_objects(layer)
    99→    -- Draw ball (flashes white when action is triggered)
   100→    local r, g, b = hsv_to_rgb(ball.hue, 1, 1)
   101→    if pressed_flash > 0 then
   102→        -- Flash to white
   103→        local flash_t = pressed_flash / 0.3
   104→        r = math.floor(r + (255 - r) * flash_t)
   105→        g = math.floor(g + (255 - g) * flash_t)
   106→        b = math.floor(b + (255 - b) * flash_t)
   107→    end

Good. Now I need to check and fix the flash timer decay code at the end of update() to remove the reference to mouse_click_flash:

208-    if pressed_flash > 0 then
209-        pressed_flash = pressed_flash - dt
210-    end
211:    if mouse_click_flash > 0 then
212:        mouse_click_flash = mouse_click_flash - dt
213-    end
214-
215-    -- === Update ball (no auto-movement, just keep in bounds) ===

Found it. Let me remove those lines:

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   204→        print("Mouse delta: " .. dx .. ", " .. dy)
   205→    end
   206→
   207→    -- Decay flash timers
   208→    if pressed_flash > 0 then
   209→        pressed_flash = pressed_flash - dt
   210→    end
   211→
   212→    -- === Update ball (no auto-movement, just keep in bounds) ===
   213→    ball.hue = (ball.hue + ball.hue_speed * dt) % 360
   214→
   215→    -- Keep ball in bounds
   216→    if ball.x - ball.radius < 0 then ball.x = ball.radius end

The test is now updated. Let me build again to make sure everything works.

anchor.c

src/anchor.c(738): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1339): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Build successful. Ready for testing.

Step 3 is complete. Moving to Step 4: Unbinding and bind_all.

From the implementation plan:
- `input_unbind(action, control)` — remove specific control from action
- `input_unbind_all(action)` — remove all controls from action
- `input_bind_all()` — bind every key/button to action with same name
  - All keyboard keys → `'a'`, `'space'`, `'left'`, etc.
  - Mouse buttons → `'mouse_1'`, `'mouse_2'`, `'wheel_up'`, `'wheel_down'`

Let me implement these functions.

- [completed] Step 1: Raw keyboard state
- [completed] Step 2: Mouse state
- [completed] Step 3: Basic action binding
- [in_progress] Step 4: Unbinding and bind_all
- [pending] Step 5: Axis helpers
- [pending] Step 6: Gamepad support
- [pending] Step 7: Chords
- [pending] Step 8: Sequences
- [pending] Step 9: Holds
- [pending] Step 10: Input type detection
- [pending] Step 11: Rebinding capture
- [pending] Step 12: Utility functions

Now implementing Step 4: Unbinding and bind_all.

I need to add:
1. `input_unbind(action, control)` - remove specific control from action
2. `input_unbind_all(action)` - remove all controls from action
3. `input_bind_all()` - bind every key/button to action with same name

For input_bind_all(), I need to create actions for:
- All keyboard keys: 'a'-'z', '0'-'9', 'space', 'enter', 'escape', 'left', 'right', 'up', 'down', etc.
- Mouse buttons: 'mouse_1', 'mouse_2', 'mouse_3', etc.
- Mouse wheel: 'wheel_up', 'wheel_down' (these are special - they're not held, just pressed)

Let me add these functions to anchor.c.

885→}
   886→
   887→// Query action state - is_released returns true if ANY bound control was just released
   888→static bool action_is_released(const char* name) {
   889→    Action* action = action_find(name);
   890→    if (!action) return false;
   891→
   892→    for (int i = 0; i < action->control_count; i++) {
   893→        if (control_is_released(&action->controls[i])) {
   894→            return true;
   895→        }
   896→    }
   897→    return false;
   898→}
   899→
   900→// Queue a layer to be drawn to screen at given offset
   901→static void layer_queue_draw(Layer* layer, float x, float y) {
   902→    if (layer_draw_count >= MAX_LAYER_DRAWS) return;
   903→    layer_draw_queue[layer_draw_count].layer = layer;
   904→    layer_draw_queue[layer_draw_count].x = x;
   905→    layer_draw_queue[layer_draw_count].y = y;
   906→    layer_draw_count++;
   907→}
   908→
   909→// Queue a shader application command (deferred - actual work done at frame end)
   910→static void layer_apply_shader(Layer* layer, GLuint shader) {
   911→    if (!shader) return;
   912→    if (layer->command_count >= MAX_COMMAND_CAPACITY) return;
   913→
   914→    DrawCommand* cmd = &layer->commands[layer->command_count++];

I'll add the unbind and bind_all functions after action_is_released and before layer_queue_draw.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   883→    }
   884→    return false;
   885→}
   886→
   887→// Query action state - is_released returns true if ANY bound control was just released
   888→static bool action_is_released(const char* name) {
   889→    Action* action = action_find(name);
   890→    if (!action) return false;
   891→
   892→    for (int i = 0; i < action->control_count; i++) {
   893→        if (control_is_released(&action->controls[i])) {
   894→            return true;
   895→        }
   896→    }
   897→    return false;
   898→}
   899→
   900→// Unbind a specific control from an action
   901→static bool input_unbind_control(const char* action_name, const char* control_str) {
   902→    Action* action = action_find(action_name);
   903→    if (!action) return false;
   904→
   905→    Control ctrl;
   906→    if (!parse_control_string(control_str, &ctrl)) {
   907→        return false;
   908→    }
   909→
   910→    // Find and remove the control
   911→    for (int i = 0; i < action->control_count; i++) {
... [72 more lines]

Now I need to add the Lua bindings for these functions. Let me find the Lua binding section and add them.

1760→    return 2;
  1761→}
  1762→
  1763→// Action binding Lua bindings
  1764→static int l_input_bind(lua_State* L) {
  1765→    const char* action = luaL_checkstring(L, 1);
  1766→    const char* control = luaL_checkstring(L, 2);
  1767→    lua_pushboolean(L, input_bind_control(action, control));
  1768→    return 1;
  1769→}
  1770→
  1771→static int l_is_down(lua_State* L) {
  1772→    const char* action = luaL_checkstring(L, 1);
  1773→    lua_pushboolean(L, action_is_down(action));
  1774→    return 1;
  1775→}
  1776→
  1777→static int l_is_pressed(lua_State* L) {
  1778→    const char* action = luaL_checkstring(L, 1);
  1779→    lua_pushboolean(L, action_is_pressed(action));
  1780→    return 1;
  1781→}
  1782→
  1783→static int l_is_released(lua_State* L) {
  1784→    const char* action = luaL_checkstring(L, 1);
  1785→    lua_pushboolean(L, action_is_released(action));
  1786→    return 1;
  1787→}
  1788→
  1789→static void register_lua_bindings(lua_State* L) {
... [30 more lines]

Let me add the unbind Lua bindings after the existing action binding bindings:

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1779→    lua_pushboolean(L, action_is_pressed(action));
  1780→    return 1;
  1781→}
  1782→
  1783→static int l_is_released(lua_State* L) {
  1784→    const char* action = luaL_checkstring(L, 1);
  1785→    lua_pushboolean(L, action_is_released(action));
  1786→    return 1;
  1787→}
  1788→
  1789→static int l_input_unbind(lua_State* L) {
  1790→    const char* action = luaL_checkstring(L, 1);
  1791→    const char* control = luaL_checkstring(L, 2);
  1792→    lua_pushboolean(L, input_unbind_control(action, control));
  1793→    return 1;
  1794→}
  1795→
  1796→static int l_input_unbind_all(lua_State* L) {
  1797→    const char* action = luaL_checkstring(L, 1);
  1798→    input_unbind_all_controls(action);
  1799→    return 0;
  1800→}
  1801→
  1802→static int l_input_bind_all(lua_State* L) {
  1803→    (void)L;  // Unused
  1804→    input_bind_all_defaults();
  1805→    return 0;
  1806→}
  1807→
... [5 more lines]

Now I need to register these new functions. Let me find and update the registration section.

1845→    lua_register(L, "mouse_is_down", l_mouse_is_down);
  1846→    lua_register(L, "mouse_is_pressed", l_mouse_is_pressed);
  1847→    lua_register(L, "mouse_is_released", l_mouse_is_released);
  1848→    lua_register(L, "mouse_wheel", l_mouse_wheel);
  1849→    // Input - Action binding
  1850→    lua_register(L, "input_bind", l_input_bind);
  1851→    lua_register(L, "is_down", l_is_down);
  1852→    lua_register(L, "is_pressed", l_is_pressed);
  1853→    lua_register(L, "is_released", l_is_released);
  1854→}
  1855→
  1856→// Main loop state (needed for emscripten)
  1857→static bool running = true;
  1858→static Uint64 perf_freq = 0;
  1859→static Uint64 last_time = 0;
  1860→static double physics_lag = 0.0;
  1861→static double render_lag = 0.0;
  1862→static Uint64 step = 0;
  1863→static double game_time = 0.0;
  1864→static Uint64 frame = 0;
  1865→
  1866→// VSync snap frequencies (computed at init based on display refresh rate)
  1867→static double snap_frequencies[8];
  1868→static int snap_frequency_count = 0;
  1869→
  1870→// Reset timing accumulators (call on focus gain, scene transitions, etc.)
  1871→// This prevents accumulated lag from causing catch-up updates
  1872→static void timing_resync(void) {
  1873→    physics_lag = 0.0;
  1874→    render_lag = 0.0;

Good, now let me add the new registrations after the existing action binding ones:

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1845→    lua_register(L, "mouse_is_down", l_mouse_is_down);
  1846→    lua_register(L, "mouse_is_pressed", l_mouse_is_pressed);
  1847→    lua_register(L, "mouse_is_released", l_mouse_is_released);
  1848→    lua_register(L, "mouse_wheel", l_mouse_wheel);
  1849→    // Input - Action binding
  1850→    lua_register(L, "input_bind", l_input_bind);
  1851→    lua_register(L, "input_unbind", l_input_unbind);
  1852→    lua_register(L, "input_unbind_all", l_input_unbind_all);
  1853→    lua_register(L, "input_bind_all", l_input_bind_all);
  1854→    lua_register(L, "is_down", l_is_down);
  1855→    lua_register(L, "is_pressed", l_is_pressed);
  1856→    lua_register(L, "is_released", l_is_released);
  1857→}
  1858→
  1859→// Main loop state (needed for emscripten)
  1860→static bool running = true;
  1861→static Uint64 perf_freq = 0;

Good. Now let me build and update the test to use these new functions.

anchor.c

src/anchor.c(738): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1418): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Build successful. Now let me update the test to use input_bind_all and test unbinding.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→print("main.lua loaded - Input Test (Step 4: Unbind and bind_all)")
     2→
     3→set_shape_filter("rough")
     4→
     5→local screen_w, screen_h = 480, 270
     6→
     7→-- Use input_bind_all to create default bindings for all keys/mouse buttons
     8→input_bind_all()
     9→print("input_bind_all() called - all keys now have actions")
    10→
    11→-- Set up custom action bindings (these add to what bind_all created)
    12→input_bind('move_up', 'key:w')
    13→input_bind('move_up', 'key:up')
    14→input_bind('move_down', 'key:s')
    15→input_bind('move_down', 'key:down')
    16→input_bind('move_left', 'key:a')
    17→input_bind('move_left', 'key:left')
    18→input_bind('move_right', 'key:d')
    19→input_bind('move_right', 'key:right')
    20→input_bind('action', 'key:space')
    21→input_bind('action', 'mouse:1')
    22→print("Custom action bindings set up")
    23→
    24→-- Background color from twitter_emoji theme (48, 49, 50)
    25→local bg_color = rgba(231, 232, 233, 255)
    26→

Now let me also add a test for unbinding in the update function - like pressing 'u' to unbind mouse from action, and 'r' to rebind it. Let me also test the bind_all action names like 'space', 'mouse_1', etc.

165→    -- Apply movement
   166→    ball.x = ball.x + move_x * move_speed * dt
   167→    ball.y = ball.y + move_y * move_speed * dt
   168→
   169→    -- Check is_pressed for flash effect - triggers on space OR left click
   170→    if is_pressed('action') then
   171→        pressed_flash = 0.3
   172→        print("ACTION PRESSED! (space or left click)")
   173→    end
   174→
   175→    -- Check is_released
   176→    if is_released('action') then
   177→        print("ACTION RELEASED!")
   178→    end
   179→
   180→    -- === Raw mouse tests (for cursor color, wheel, delta) ===
   181→    if mouse_is_pressed(2) then
   182→        print("Middle mouse PRESSED!")  -- SDL button 2 = middle
   183→    end
   184→    if mouse_is_pressed(3) then
   185→        print("Right mouse PRESSED!")  -- SDL button 3 = right
   186→    end
   187→
   188→    if mouse_is_released(2) then
   189→        print("Middle mouse RELEASED!")
   190→    end
   191→    if mouse_is_released(3) then
   192→        print("Right mouse RELEASED!")
   193→    end
   194→
... [20 more lines]

Let me add tests for:
1. Pressing 'u' unbinds mouse from action
2. Pressing 'r' rebinds mouse to action
3. Also test using bind_all actions directly like is_pressed('q'), is_pressed('mouse_2')

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   171→        pressed_flash = 0.3
   172→        print("ACTION PRESSED! (space or left click)")
   173→    end
   174→
   175→    -- Check is_released
   176→    if is_released('action') then
   177→        print("ACTION RELEASED!")
   178→    end
   179→
   180→    -- === Test unbind/rebind with U/R keys ===
   181→    if is_pressed('u') then
   182→        input_unbind('action', 'mouse:1')
   183→        print("UNBIND: mouse:1 removed from 'action' - left click no longer triggers flash!")
   184→    end
   185→    if is_pressed('r') then
   186→        input_bind('action', 'mouse:1')
   187→        print("REBIND: mouse:1 added back to 'action' - left click works again!")
   188→    end
   189→
   190→    -- Test bind_all actions (pressing Q should print via 'q' action)
   191→    if is_pressed('q') then
   192→        print("Q pressed via bind_all action 'q'")
   193→    end
   194→    if is_pressed('mouse_2') then
   195→        print("Middle mouse pressed via bind_all action 'mouse_2'")
   196→    end
   197→    if is_pressed('mouse_3') then
   198→        print("Right mouse pressed via bind_all action 'mouse_3'")
   199→    end
... [6 more lines]

Good, the test is updated. Ready for the user to test.

The user says space makes a star disappear and doesn't trigger flash, and left click does nothing. Let me think about what's happening...

Looking at the test code, we have:
1. `input_bind_all()` - this creates an action 'space' bound to 'key:space'
2. Then we do `input_bind('action', 'key:space')` - this adds 'key:space' to the 'action' action

But wait, in the draw_objects function, we have this code that hides stars when number keys are held:
```lua
-- Each star hides when its number key is held
local key_name = tostring(i + 1)
if not key_is_down(key_name) then
```

So stars 1-5 hide when keys 1-5 are held. That's not space...

Oh wait, I see! The issue is that `input_bind_all()` creates actions for keys including 'space'. But then we're using `is_pressed('action')` which should work...

Actually, let me re-read the code. When input_bind_all() is called, it binds:
- 'space' action to 'key:space' control

Then we call:
- `input_bind('action', 'key:space')` - this should add 'key:space' to the 'action' action

But wait - the logic in action_get_or_create finds existing action by name. So 'space' action exists from bind_all, and 'action' action gets created separately with 'key:space' added to it.

Hmm, let me think about what could be wrong...

Oh! I think I see the issue. When we call `input_bind('action', 'key:space')`, we're adding 'key:space' to a NEW action called 'action'. That should work.

Let me check if there's something wrong with how the action binding is working. Maybe the issue is that the 'action' action isn't being found correctly?


The user also mentions left click does nothing, so `input_bind('action', 'mouse:1')` isn't working either. And if space is making a star disappear, that's strange since the star hiding logic checks for number keys 1-5 or shift for the emoji. Space shouldn't trigger either of those conditions. I need to verify whether the action system itself has a bug or if the bindings aren't being registered properly.

Looking at the C code, `action_is_pressed` calls `action_find` which iterates through the actions array comparing names. The logic appears sound, but `input_bind_all` creates a large number of actions—26 letters, 10 numbers, roughly 30 named keys, and 5 mouse buttons totaling around 71 actions. I should check if there's an issue with how many actions are being created or if there's a limit being exceeded.

The `MAX_ACTIONS` constant is set to 64, which means we're trying to store 71 actions in an array that only holds 64. This causes the later actions—particularly the mouse buttons added at the end—to never get created. When custom actions like 'action' are subsequently bound, they also fail to be added since we've already hit the capacity limit.

Let me verify the count of named keys: 5 (space, enter, escape, backspace, tab) + 4 (arrow keys) + 6 (shift/ctrl/alt variants) + 12 (function keys) + 6 (insert, delete, home, end, pageup, pagedown) = 33 total. Combined with 26 letters, 10 numbers, and 5 mouse buttons, that's 74 actions exceeding our 64-action limit. The overflow means we lose the final 10 actions, and any subsequent custom bindings like 'move_up' or 'move_down' can't be created either.

When input_bind_all() fills the action table to capacity, the custom actions needed for movement and interaction never get registered. This explains why is_down('move_up') and is_pressed('action') both fail—those actions were never bound. The star disappearing with space is puzzling though, since the star logic checks for number keys 1-5, not space. There's something else going on here that I'm missing about how space interacts with the system.

710-
711-#define MAX_CONTROLS_PER_ACTION 8
712:#define MAX_ACTIONS 64
713-#define MAX_ACTION_NAME 32
714-
--
719-} Action;
720-
721:static Action actions[MAX_ACTIONS];
722-static int action_count = 0;
723-
--
731-    }
732-    // Create new
733:    if (action_count >= MAX_ACTIONS) {
734-        printf("Warning: Max actions reached\n");
735-        return NULL;

Let me increase MAX_ACTIONS to 128 to accommodate all the default bindings plus custom ones.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   707→    int code;       // Scancode for keys, button number for mouse/gamepad
   708→    int sign;       // For axes: +1 or -1 (positive or negative direction)
   709→} Control;
   710→
   711→#define MAX_CONTROLS_PER_ACTION 8
   712→#define MAX_ACTIONS 128
   713→#define MAX_ACTION_NAME 32
   714→
   715→typedef struct {
   716→    char name[MAX_ACTION_NAME];
   717→    Control controls[MAX_CONTROLS_PER_ACTION];

Now let me rebuild and the user can test again.

anchor.c

src/anchor.c(738): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1418): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Build successful. The issue was that MAX_ACTIONS was 64 but input_bind_all() creates ~74 actions, so everything after the 64th action (including our custom 'action' binding) failed to be created. Now with MAX_ACTIONS at 128, there's plenty of room.

Step 4 is complete. Moving on to Step 5: Axis helpers.

From the implementation plan:
- `input_get_axis(negative, positive)` — returns -1 to 1
  - Digital: `is_down(positive) - is_down(negative)`
  - Analog: uses actual axis values if bound to gamepad axis
- `input_get_vector(left, right, up, down)` — returns x, y
  - Normalized to prevent faster diagonal movement
  - `len = sqrt(x*x + y*y); if len > 1 then x, y = x/len, y/len`

Since we don't have gamepad support yet (Step 6), the axis helpers will just work with digital inputs for now.

- [completed] Step 1: Raw keyboard state
- [completed] Step 2: Mouse state
- [completed] Step 3: Basic action binding
- [completed] Step 4: Unbinding and bind_all
- [in_progress] Step 5: Axis helpers
- [pending] Step 6: Gamepad support
- [pending] Step 7: Chords
- [pending] Step 8: Sequences
- [pending] Step 9: Holds
- [pending] Step 10: Input type detection
- [pending] Step 11: Rebinding capture
- [pending] Step 12: Utility functions

Now implementing Step 5: Axis helpers.

I need to add:
- `input_get_axis(negative, positive)` - returns -1 to 1
- `input_get_vector(left, right, up, down)` - returns normalized x, y

For now these will work with digital inputs only. Gamepad analog support comes in Step 6.

970→    for (int i = 1; i <= MAX_MOUSE_BUTTONS; i++) {
   971→        char action_name[16];
   972→        char control_str[16];
   973→        snprintf(action_name, sizeof(action_name), "mouse_%d", i);
   974→        snprintf(control_str, sizeof(control_str), "mouse:%d", i);
   975→        input_bind_control(action_name, control_str);
   976→    }
   977→}
   978→
   979→// Queue a layer to be drawn to screen at given offset
   980→static void layer_queue_draw(Layer* layer, float x, float y) {
   981→    if (layer_draw_count >= MAX_LAYER_DRAWS) return;
   982→    layer_draw_queue[layer_draw_count].layer = layer;
   983→    layer_draw_queue[layer_draw_count].x = x;
   984→    layer_draw_queue[layer_draw_count].y = y;
   985→    layer_draw_count++;
   986→}
   987→
   988→// Queue a shader application command (deferred - actual work done at frame end)
   989→static void layer_apply_shader(Layer* layer, GLuint shader) {
   990→    if (!shader) return;
   991→    if (layer->command_count >= MAX_COMMAND_CAPACITY) return;
   992→
   993→    DrawCommand* cmd = &layer->commands[layer->command_count++];
   994→    memset(cmd, 0, sizeof(DrawCommand));
   995→    cmd->type = COMMAND_APPLY_SHADER;
   996→    cmd->texture_id = shader;  // Reuse texture_id field for shader handle
   997→}
   998→
   999→// Queue uniform setting commands (deferred - applied when processing commands)

I'll add the axis helper functions after input_bind_all_defaults and before layer_queue_draw.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   965→        snprintf(control_str, sizeof(control_str), "key:%s", named_keys[i]);
   966→        input_bind_control(named_keys[i], control_str);
   967→    }
   968→
   969→    // Mouse buttons
   970→    for (int i = 1; i <= MAX_MOUSE_BUTTONS; i++) {
   971→        char action_name[16];
   972→        char control_str[16];
   973→        snprintf(action_name, sizeof(action_name), "mouse_%d", i);
   974→        snprintf(control_str, sizeof(control_str), "mouse:%d", i);
   975→        input_bind_control(action_name, control_str);
   976→    }
   977→}
   978→
   979→// Get axis value from two actions (negative and positive)
   980→// Returns -1 to 1 for digital inputs
   981→// Will return analog values when gamepad support is added (Step 6)
   982→static float input_get_axis(const char* negative, const char* positive) {
   983→    float value = 0.0f;
   984→    if (action_is_down(negative)) value -= 1.0f;
   985→    if (action_is_down(positive)) value += 1.0f;
   986→    return value;
   987→}
   988→
   989→// Get 2D vector from four actions, normalized to prevent faster diagonal movement
   990→static void input_get_vector(const char* left, const char* right, const char* up, const char* down, float* out_x, float* out_y) {
   991→    float x = input_get_axis(left, right);
   992→    float y = input_get_axis(up, down);
   993→
... [17 more lines]

Now I need to add the Lua bindings for these functions.

1820→    return 1;
  1821→}
  1822→
  1823→static int l_input_unbind_all(lua_State* L) {
  1824→    const char* action = luaL_checkstring(L, 1);
  1825→    input_unbind_all_controls(action);
  1826→    return 0;
  1827→}
  1828→
  1829→static int l_input_bind_all(lua_State* L) {
  1830→    (void)L;  // Unused
  1831→    input_bind_all_defaults();
  1832→    return 0;
  1833→}
  1834→
  1835→static void register_lua_bindings(lua_State* L) {
  1836→    lua_register(L, "layer_create", l_layer_create);
  1837→    lua_register(L, "layer_rectangle", l_layer_rectangle);
  1838→    lua_register(L, "layer_circle", l_layer_circle);
  1839→    lua_register(L, "layer_push", l_layer_push);
  1840→    lua_register(L, "layer_pop", l_layer_pop);
  1841→    lua_register(L, "layer_draw_texture", l_layer_draw_texture);
  1842→    lua_register(L, "layer_set_blend_mode", l_layer_set_blend_mode);
  1843→    lua_register(L, "texture_load", l_texture_load);
  1844→    lua_register(L, "texture_get_width", l_texture_get_width);
  1845→    lua_register(L, "texture_get_height", l_texture_get_height);
  1846→    lua_register(L, "rgba", l_rgba);
  1847→    lua_register(L, "set_shape_filter", l_set_shape_filter);
  1848→    lua_register(L, "timing_resync", l_timing_resync);
  1849→    // Effect shaders
... [20 more lines]

I need to add the Lua binding functions before register_lua_bindings and then register them. Let me add them after l_input_bind_all.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1825→    input_unbind_all_controls(action);
  1826→    return 0;
  1827→}
  1828→
  1829→static int l_input_bind_all(lua_State* L) {
  1830→    (void)L;  // Unused
  1831→    input_bind_all_defaults();
  1832→    return 0;
  1833→}
  1834→
  1835→static int l_input_get_axis(lua_State* L) {
  1836→    const char* negative = luaL_checkstring(L, 1);
  1837→    const char* positive = luaL_checkstring(L, 2);
  1838→    lua_pushnumber(L, input_get_axis(negative, positive));
  1839→    return 1;
  1840→}
  1841→
  1842→static int l_input_get_vector(lua_State* L) {
  1843→    const char* left = luaL_checkstring(L, 1);
  1844→    const char* right = luaL_checkstring(L, 2);
  1845→    const char* up = luaL_checkstring(L, 3);
  1846→    const char* down = luaL_checkstring(L, 4);
  1847→    float x, y;
  1848→    input_get_vector(left, right, up, down, &x, &y);
  1849→    lua_pushnumber(L, x);
  1850→    lua_pushnumber(L, y);
  1851→    return 2;
  1852→}
  1853→
... [5 more lines]

Now I need to register these functions. Let me find where to add them.

1890→    lua_register(L, "mouse_set_grabbed", l_mouse_set_grabbed);
  1891→    lua_register(L, "mouse_is_down", l_mouse_is_down);
  1892→    lua_register(L, "mouse_is_pressed", l_mouse_is_pressed);
  1893→    lua_register(L, "mouse_is_released", l_mouse_is_released);
  1894→    lua_register(L, "mouse_wheel", l_mouse_wheel);
  1895→    // Input - Action binding
  1896→    lua_register(L, "input_bind", l_input_bind);
  1897→    lua_register(L, "input_unbind", l_input_unbind);
  1898→    lua_register(L, "input_unbind_all", l_input_unbind_all);
  1899→    lua_register(L, "input_bind_all", l_input_bind_all);
  1900→    lua_register(L, "is_down", l_is_down);
  1901→    lua_register(L, "is_pressed", l_is_pressed);
  1902→    lua_register(L, "is_released", l_is_released);
  1903→}
  1904→
  1905→// Main loop state (needed for emscripten)
  1906→static bool running = true;
  1907→static Uint64 perf_freq = 0;
  1908→static Uint64 last_time = 0;
  1909→static double physics_lag = 0.0;
  1910→static double render_lag = 0.0;
  1911→static Uint64 step = 0;
  1912→static double game_time = 0.0;
  1913→static Uint64 frame = 0;
  1914→
  1915→// VSync snap frequencies (computed at init based on display refresh rate)
  1916→static double snap_frequencies[8];
  1917→static int snap_frequency_count = 0;
  1918→
  1919→// Reset timing accumulators (call on focus gain, scene transitions, etc.)

Now let me add the registrations for the axis functions:

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1895→    // Input - Action binding
  1896→    lua_register(L, "input_bind", l_input_bind);
  1897→    lua_register(L, "input_unbind", l_input_unbind);
  1898→    lua_register(L, "input_unbind_all", l_input_unbind_all);
  1899→    lua_register(L, "input_bind_all", l_input_bind_all);
  1900→    lua_register(L, "input_get_axis", l_input_get_axis);
  1901→    lua_register(L, "input_get_vector", l_input_get_vector);
  1902→    lua_register(L, "is_down", l_is_down);
  1903→    lua_register(L, "is_pressed", l_is_pressed);
  1904→    lua_register(L, "is_released", l_is_released);
  1905→}
  1906→
  1907→// Main loop state (needed for emscripten)
  1908→static bool running = true;
  1909→static Uint64 perf_freq = 0;

Now let me build and update the test to use the new axis helpers.

anchor.c

src/anchor.c(738): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1445): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Build successful. Now let me update the test to use input_get_vector instead of individual is_down checks. This will also demonstrate the diagonal normalization.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→print("main.lua loaded - Input Test (Step 5: Axis helpers)")
     2→
     3→set_shape_filter("rough")
     4→
     5→local screen_w, screen_h = 480, 270

Now let me update the movement code to use input_get_vector instead of individual is_down checks:

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   152→
   153→function update(dt)
   154→    game_time = game_time + dt
   155→
   156→    -- === Input Test: Control ball with input_get_vector (normalized diagonal) ===
   157→    -- This replaces 4 separate is_down checks and normalizes diagonal movement
   158→    local move_x, move_y = input_get_vector('move_left', 'move_right', 'move_up', 'move_down')
   159→
   160→    -- Apply movement (diagonal will be ~0.707 speed, not 1.414x)
   161→    ball.x = ball.x + move_x * move_speed * dt
   162→    ball.y = ball.y + move_y * move_speed * dt
   163→
   164→    -- Check is_pressed for flash effect - triggers on space OR left click
   165→    if is_pressed('action') then
   166→        pressed_flash = 0.3

The test is ready. The ball movement now uses input_get_vector which normalizes diagonal movement. Ready for testing.

Step 5 is complete. Moving on to Step 6: Gamepad support.

From the implementation plan:
- SDL gamepad initialization and hotplug handling
- `gamepad_is_connected()` — true if at least one gamepad connected
- `gamepad_get_axis(axis)` — raw axis value (-1 to 1)
  - Axes: `'leftx'`, `'lefty'`, `'rightx'`, `'righty'`, `'triggerleft'`, `'triggerright'`
- `input_set_deadzone(value)` — threshold for axis→button conversion (default 0.5)

I also need to:
- Add gamepad button and axis support to the action binding system (parse 'button:a', 'axis:leftx+')
- Handle gamepad connect/disconnect events
- Update control_is_down etc. to handle gamepad controls

- [completed] Step 1: Raw keyboard state
- [completed] Step 2: Mouse state
- [completed] Step 3: Basic action binding
- [completed] Step 4: Unbinding and bind_all
- [completed] Step 5: Axis helpers
- [in_progress] Step 6: Gamepad support
- [pending] Step 7: Chords
- [pending] Step 8: Sequences
- [pending] Step 9: Holds
- [pending] Step 10: Input type detection
- [pending] Step 11: Rebinding capture
- [pending] Step 12: Utility functions

Now implementing Step 6: Gamepad support. This is a bigger step that includes:1. SDL gamepad state tracking (buttons and axes)
2. Hotplug handling (connect/disconnect)
3. `gamepad_is_connected()`, `gamepad_get_axis(axis)`
4. `input_set_deadzone(value)` for axis→button conversion5. Extend parse_control_string to handle 'button:a', 'axis:leftx+'
6. Extend control_is_down/pressed/released for gamepad controls
7. Update input_get_axis to use analog values when available

Let me start by adding the gamepad state and initialization code.

555→// Input state - Mouse
   556→#define MAX_MOUSE_BUTTONS 5
   557→static bool mouse_buttons_current[MAX_MOUSE_BUTTONS] = {0};
   558→static bool mouse_buttons_previous[MAX_MOUSE_BUTTONS] = {0};
   559→static int mouse_x = 0, mouse_y = 0;           // Window coordinates
   560→static int mouse_dx = 0, mouse_dy = 0;         // Delta this frame
   561→static int mouse_wheel_x = 0, mouse_wheel_y = 0; // Wheel delta this frame
   562→
   563→// Convert key name string to SDL scancode
   564→static SDL_Scancode key_name_to_scancode(const char* name) {
   565→    if (!name) return SDL_SCANCODE_UNKNOWN;
   566→
   567→    // Single character keys (a-z, 0-9)
   568→    if (strlen(name) == 1) {
   569→        char c = name[0];
   570→        if (c >= 'a' && c <= 'z') return SDL_SCANCODE_A + (c - 'a');
   571→        if (c >= 'A' && c <= 'Z') return SDL_SCANCODE_A + (c - 'A');
   572→        if (c >= '0' && c <= '9') return SDL_SCANCODE_0 + (c - '0');
   573→    }
   574→

I'll add the gamepad state after the mouse state. SDL2 has SDL_GameController for gamepad support.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   551→// Input state - Keyboard
   552→static bool keys_current[SDL_NUM_SCANCODES] = {0};
   553→static bool keys_previous[SDL_NUM_SCANCODES] = {0};
   554→
   555→// Input state - Mouse
   556→#define MAX_MOUSE_BUTTONS 5
   557→static bool mouse_buttons_current[MAX_MOUSE_BUTTONS] = {0};
   558→static bool mouse_buttons_previous[MAX_MOUSE_BUTTONS] = {0};
   559→static int mouse_x = 0, mouse_y = 0;           // Window coordinates
   560→static int mouse_dx = 0, mouse_dy = 0;         // Delta this frame
   561→static int mouse_wheel_x = 0, mouse_wheel_y = 0; // Wheel delta this frame
   562→
   563→// Input state - Gamepad
   564→static SDL_GameController* gamepad = NULL;
   565→static bool gamepad_buttons_current[SDL_CONTROLLER_BUTTON_MAX] = {0};
   566→static bool gamepad_buttons_previous[SDL_CONTROLLER_BUTTON_MAX] = {0};
   567→static float gamepad_axes[SDL_CONTROLLER_AXIS_MAX] = {0};
   568→static float gamepad_deadzone = 0.2f;  // Default deadzone for axis→button conversion
   569→
   570→// Convert gamepad button name to SDL button enum
   571→static SDL_GameControllerButton gamepad_button_from_name(const char* name) {
   572→    if (!name) return SDL_CONTROLLER_BUTTON_INVALID;
   573→    if (strcmp(name, "a") == 0) return SDL_CONTROLLER_BUTTON_A;
   574→    if (strcmp(name, "b") == 0) return SDL_CONTROLLER_BUTTON_B;
   575→    if (strcmp(name, "x") == 0) return SDL_CONTROLLER_BUTTON_X;
   576→    if (strcmp(name, "y") == 0) return SDL_CONTROLLER_BUTTON_Y;
   577→    if (strcmp(name, "back") == 0) return SDL_CONTROLLER_BUTTON_BACK;
   578→    if (strcmp(name, "guide") == 0) return SDL_CONTROLLER_BUTTON_GUIDE;
   579→    if (strcmp(name, "start") == 0) return SDL_CONTROLLER_BUTTON_START;
... [51 more lines]

Now I need to:
1. Update input_post_update to copy gamepad state
2. Update parse_control_string to handle 'button:' and 'axis:'
3. Update control_is_down/pressed/released for gamepad
4. Add gamepad event handling in the main loop
5. Add Lua bindings for gamepad functions

Let me find input_post_update and update it first.

705-    if (strcmp(name, "kp6") == 0) return SDL_SCANCODE_KP_6;
706-    if (strcmp(name, "kp7") == 0) return SDL_SCANCODE_KP_7;
707-    if (strcmp(name, "kp8") == 0) return SDL_SCANCODE_KP_8;
708-    if (strcmp(name, "kp9") == 0) return SDL_SCANCODE_KP_9;
709-    if (strcmp(name, "kpenter") == 0) return SDL_SCANCODE_KP_ENTER;
710-    if (strcmp(name, "kpplus") == 0) return SDL_SCANCODE_KP_PLUS;
711-    if (strcmp(name, "kpminus") == 0) return SDL_SCANCODE_KP_MINUS;
712-    if (strcmp(name, "kpmultiply") == 0) return SDL_SCANCODE_KP_MULTIPLY;
713-    if (strcmp(name, "kpdivide") == 0) return SDL_SCANCODE_KP_DIVIDE;
714-    if (strcmp(name, "kpperiod") == 0) return SDL_SCANCODE_KP_PERIOD;
715-
716-    return SDL_SCANCODE_UNKNOWN;
717-}
718-
719-// Copy current input state to previous (called at end of physics frame)
720:static void input_post_update(void) {
721-    memcpy(keys_previous, keys_current, sizeof(keys_previous));
722-    memcpy(mouse_buttons_previous, mouse_buttons_current, sizeof(mouse_buttons_previous));
723-    // Reset per-frame deltas
724-    mouse_dx = 0;
725-    mouse_dy = 0;
726-    mouse_wheel_x = 0;
727-    mouse_wheel_y = 0;
728-}
729-
730-// Convert window mouse coordinates to game coordinates
731-// Returns false if mouse is outside the game area (in letterbox)
732-static bool mouse_to_game_coords(int win_x, int win_y, float* game_x, float* game_y) {
733-    int window_w, window_h;
734-    SDL_GetWindowSize(window, &window_w, &window_h);
... [33 more lines]

Let me update input_post_update to include gamepad state copying:

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   715→
   716→    return SDL_SCANCODE_UNKNOWN;
   717→}
   718→
   719→// Copy current input state to previous (called at end of physics frame)
   720→static void input_post_update(void) {
   721→    memcpy(keys_previous, keys_current, sizeof(keys_previous));
   722→    memcpy(mouse_buttons_previous, mouse_buttons_current, sizeof(mouse_buttons_previous));
   723→    memcpy(gamepad_buttons_previous, gamepad_buttons_current, sizeof(gamepad_buttons_previous));
   724→    // Reset per-frame deltas
   725→    mouse_dx = 0;
   726→    mouse_dy = 0;
   727→    mouse_wheel_x = 0;
   728→    mouse_wheel_y = 0;
   729→}
   730→
   731→// Update gamepad state (call once per frame before input processing)
   732→static void gamepad_update(void) {
   733→    if (!gamepad) return;
   734→
   735→    // Update buttons
   736→    for (int i = 0; i < SDL_CONTROLLER_BUTTON_MAX; i++) {
   737→        gamepad_buttons_current[i] = SDL_GameControllerGetButton(gamepad, (SDL_GameControllerButton)i);
   738→    }
   739→
   740→    // Update axes (normalize from -32768..32767 to -1..1)
   741→    for (int i = 0; i < SDL_CONTROLLER_AXIS_MAX; i++) {
   742→        Sint16 raw = SDL_GameControllerGetAxis(gamepad, (SDL_GameControllerAxis)i);
   743→        gamepad_axes[i] = raw / 32767.0f;
... [8 more lines]

Now I need to update parse_control_string to handle 'button:' and 'axis:' control strings.

813-    }
814-    // Create new
815-    if (action_count >= MAX_ACTIONS) {
816-        printf("Warning: Max actions reached\n");
817-        return NULL;
818-    }
819-    Action* action = &actions[action_count++];
820-    strncpy(action->name, name, MAX_ACTION_NAME - 1);
821-    action->name[MAX_ACTION_NAME - 1] = '\0';
822-    action->control_count = 0;
823-    return action;
824-}
825-
826-// Find action by name (returns NULL if not found)
827-static Action* action_find(const char* name) {
828-    for (int i = 0; i < action_count; i++) {
829-        if (strcmp(actions[i].name, name) == 0) {
830-            return &actions[i];
831-        }
832-    }
833-    return NULL;
834-}
835-
836-\ Parse control string like 'key:space', 'mouse:1'
837-// Returns true on success, fills out control struct
838:static bool parse_control_string(const char* str, Control* ctrl) {
839-    if (!str || !ctrl) return false;
840-
841-    // Find the colon separator
842-    const char* colon = strchr(str, ':');
... [107 more lines]

I see the parse_control_string function at line 838. Let me update it to handle button: and axis:.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   832→    }
   833→    return NULL;
   834→}
   835→
   836→// Parse control string like 'key:space', 'mouse:1', 'button:a', 'axis:leftx+'
   837→// Returns true on success, fills out control struct
   838→static bool parse_control_string(const char* str, Control* ctrl) {
   839→    if (!str || !ctrl) return false;
   840→
   841→    // Find the colon separator
   842→    const char* colon = strchr(str, ':');
   843→    if (!colon) return false;
   844→
   845→    // Get type prefix
   846→    size_t type_len = colon - str;
   847→    const char* value = colon + 1;
   848→
   849→    if (type_len == 3 && strncmp(str, "key", 3) == 0) {
   850→        ctrl->type = CONTROL_KEY;
   851→        ctrl->code = key_name_to_scancode(value);
   852→        ctrl->sign = 0;
   853→        return ctrl->code != SDL_SCANCODE_UNKNOWN;
   854→    }
   855→    else if (type_len == 5 && strncmp(str, "mouse", 5) == 0) {
   856→        ctrl->type = CONTROL_MOUSE_BUTTON;
   857→        ctrl->code = atoi(value);  // 1, 2, 3, etc.
   858→        ctrl->sign = 0;
   859→        return ctrl->code >= 1 && ctrl->code <= MAX_MOUSE_BUTTONS;
   860→    }
... [22 more lines]

Now I need to update control_is_down, control_is_pressed, and control_is_released to handle gamepad controls.

891-    // Check if already bound
892-    for (int i = 0; i < action->control_count; i++) {
893-        if (action->controls[i].type == ctrl.type &&
894-            action->controls[i].code == ctrl.code &&
895-            action->controls[i].sign == ctrl.sign) {
896-            return true;  // Already bound
897-        }
898-    }
899-
900-    // Add new control
901-    if (action->control_count >= MAX_CONTROLS_PER_ACTION) {
902-        printf("Warning: Max controls per action reached for '%s'\n", action_name);
903-        return false;
904-    }
905-
906-    action->controls[action->control_count++] = ctrl;
907-    return true;
908-}
909-
910-// Check if a single control is currently down
911:static bool control_is_down(const Control* ctrl) {
912-    switch (ctrl->type) {
913-        case CONTROL_KEY:
914-            return keys_current[ctrl->code];
915-        case CONTROL_MOUSE_BUTTON:
916-            if (ctrl->code >= 1 && ctrl->code <= MAX_MOUSE_BUTTONS) {
917-                return mouse_buttons_current[ctrl->code - 1];
918-            }
919-            return false;
920-        default:
... [53 more lines]

I need to update control_is_down, control_is_pressed, and control_is_released to include gamepad button and axis handling. Let me do this.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   906→    action->controls[action->control_count++] = ctrl;
   907→    return true;
   908→}
   909→
   910→// Helper: check if gamepad axis exceeds deadzone in specified direction
   911→static bool axis_is_active(int axis, int sign) {
   912→    if (axis < 0 || axis >= SDL_CONTROLLER_AXIS_MAX) return false;
   913→    float value = gamepad_axes[axis];
   914→    if (sign > 0) return value > gamepad_deadzone;   // Positive direction
   915→    if (sign < 0) return value < -gamepad_deadzone;  // Negative direction
   916→    return fabsf(value) > gamepad_deadzone;          // Either direction
   917→}
   918→
   919→// Check if a single control is currently down
   920→static bool control_is_down(const Control* ctrl) {
   921→    switch (ctrl->type) {
   922→        case CONTROL_KEY:
   923→            return keys_current[ctrl->code];
   924→        case CONTROL_MOUSE_BUTTON:
   925→            if (ctrl->code >= 1 && ctrl->code <= MAX_MOUSE_BUTTONS) {
   926→                return mouse_buttons_current[ctrl->code - 1];
   927→            }
   928→            return false;
   929→        case CONTROL_GAMEPAD_BUTTON:
   930→            if (ctrl->code >= 0 && ctrl->code < SDL_CONTROLLER_BUTTON_MAX) {
   931→                return gamepad_buttons_current[ctrl->code];
   932→            }
   933→            return false;
   934→        case CONTROL_GAMEPAD_AXIS:
... [17 more lines]

Now I need to update control_is_pressed and control_is_released to handle gamepad buttons. For axis pressed/released, I need to track previous axis state - but actually I can compare if it just crossed the deadzone threshold. Let me continue updating these functions.

948→                int idx = ctrl->code - 1;
   949→                return mouse_buttons_current[idx] && !mouse_buttons_previous[idx];
   950→            }
   951→            return false;
   952→        default:
   953→            return false;
   954→    }
   955→}
   956→
   957→// Check if a single control was just released
   958→static bool control_is_released(const Control* ctrl) {
   959→    switch (ctrl->type) {
   960→        case CONTROL_KEY:
   961→            return !keys_current[ctrl->code] && keys_previous[ctrl->code];
   962→        case CONTROL_MOUSE_BUTTON:
   963→            if (ctrl->code >= 1 && ctrl->code <= MAX_MOUSE_BUTTONS) {
   964→                int idx = ctrl->code - 1;
   965→                return !mouse_buttons_current[idx] && mouse_buttons_previous[idx];
   966→            }
   967→            return false;
   968→        default:
   969→            return false;
   970→    }
   971→}
   972→
   973→// Query action state - is_down returns true if ANY bound control is down
   974→static bool action_is_down(const char* name) {
   975→    Action* action = action_find(name);
   976→    if (!action) return false;
   977→

I need to add gamepad button and axis handling to control_is_pressed and control_is_released. For axes, I need to track previous axis values to detect when they cross the deadzone threshold. Let me add that state tracking and then update the functions.

Actually, thinking about it more - for axis pressed/released to work, I need to store previous axis values. Let me add that.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   559→static int mouse_x = 0, mouse_y = 0;           // Window coordinates
   560→static int mouse_dx = 0, mouse_dy = 0;         // Delta this frame
   561→static int mouse_wheel_x = 0, mouse_wheel_y = 0; // Wheel delta this frame
   562→
   563→// Input state - Gamepad
   564→static SDL_GameController* gamepad = NULL;
   565→static bool gamepad_buttons_current[SDL_CONTROLLER_BUTTON_MAX] = {0};
   566→static bool gamepad_buttons_previous[SDL_CONTROLLER_BUTTON_MAX] = {0};
   567→static float gamepad_axes[SDL_CONTROLLER_AXIS_MAX] = {0};
   568→static float gamepad_axes_previous[SDL_CONTROLLER_AXIS_MAX] = {0};
   569→static float gamepad_deadzone = 0.2f;  // Default deadzone for axis→button conversion
   570→
   571→// Convert gamepad button name to SDL button enum
   572→static SDL_GameControllerButton gamepad_button_from_name(const char* name) {
   573→    if (!name) return SDL_CONTROLLER_BUTTON_INVALID;

Now let me update input_post_update to copy gamepad axes, and update control_is_pressed/released to handle gamepad.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   716→
   717→    return SDL_SCANCODE_UNKNOWN;
   718→}
   719→
   720→// Copy current input state to previous (called at end of physics frame)
   721→static void input_post_update(void) {
   722→    memcpy(keys_previous, keys_current, sizeof(keys_previous));
   723→    memcpy(mouse_buttons_previous, mouse_buttons_current, sizeof(mouse_buttons_previous));
   724→    memcpy(gamepad_buttons_previous, gamepad_buttons_current, sizeof(gamepad_buttons_previous));
   725→    memcpy(gamepad_axes_previous, gamepad_axes, sizeof(gamepad_axes_previous));
   726→    // Reset per-frame deltas
   727→    mouse_dx = 0;
   728→    mouse_dy = 0;
   729→    mouse_wheel_x = 0;
   730→    mouse_wheel_y = 0;
   731→}
   732→
   733→// Update gamepad state (call once per frame before input processing)
   734→static void gamepad_update(void) {
   735→    if (!gamepad) return;

Now let me update control_is_pressed and control_is_released to add gamepad cases:

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   939→            return false;
   940→    }
   941→}
   942→
   943→// Helper: check if axis WAS active in previous frame
   944→static bool axis_was_active(int axis, int sign) {
   945→    if (axis < 0 || axis >= SDL_CONTROLLER_AXIS_MAX) return false;
   946→    float value = gamepad_axes_previous[axis];
   947→    if (sign > 0) return value > gamepad_deadzone;
   948→    if (sign < 0) return value < -gamepad_deadzone;
   949→    return fabsf(value) > gamepad_deadzone;
   950→}
   951→
   952→// Check if a single control was just pressed
   953→static bool control_is_pressed(const Control* ctrl) {
   954→    switch (ctrl->type) {
   955→        case CONTROL_KEY:
   956→            return keys_current[ctrl->code] && !keys_previous[ctrl->code];
   957→        case CONTROL_MOUSE_BUTTON:
   958→            if (ctrl->code >= 1 && ctrl->code <= MAX_MOUSE_BUTTONS) {
   959→                int idx = ctrl->code - 1;
   960→                return mouse_buttons_current[idx] && !mouse_buttons_previous[idx];
   961→            }
   962→            return false;
   963→        case CONTROL_GAMEPAD_BUTTON:
   964→            if (ctrl->code >= 0 && ctrl->code < SDL_CONTROLLER_BUTTON_MAX) {
   965→                return gamepad_buttons_current[ctrl->code] && !gamepad_buttons_previous[ctrl->code];
   966→            }
   967→            return false;
... [33 more lines]

Now I need to:
1. Add gamepad hotplug handling in the main loop
2. Add Lua bindings for gamepad functions: gamepad_is_connected(), gamepad_get_axis(), input_set_deadzone()
3. Call gamepad_update() each frame

Let me find the event loop and add hotplug handling and the gamepad_update call.

2394-    \ VSync snapping: if dt is close to a known refresh rate, snap to it exactly
2395-    // This prevents accumulator drift from timer jitter
2396-    for (int i = 0; i < snap_frequency_count; i++) {
2397-        double diff = dt - snap_frequencies[i];
2398-        if (diff < 0) diff = -diff;
2399-        if (diff < VSYNC_SNAP_TOLERANCE) {
2400-            dt = snap_frequencies[i];
2401-            break;
2402-        }
2403-    }
2404-
2405-    // Accumulate physics lag, capped to prevent spiral of death
2406-    physics_lag += dt;
2407-    if (physics_lag > PHYSICS_RATE * MAX_UPDATES) {
2408-        physics_lag = PHYSICS_RATE * MAX_UPDATES;
2409-    }
2410-
2411-    // Accumulate render lag, capped to prevent unbounded growth
2412-    render_lag += dt;
2413-    if (render_lag > RENDER_RATE * 2) {
2414-        render_lag = RENDER_RATE * 2;
2415-    }
2416-
2417-    // Process events every frame (not tied to fixed timestep)
2418-    SDL_Event event;
2419-    while (SDL_PollEvent(&event)) {
2420-        if (event.type == SDL_QUIT) {
2421-            running = false;
2422-        }
2423-        // Track keyboard state
... [31 more lines]

I found the event handling. I need to add gamepad hotplug events (SDL_CONTROLLERDEVICEADDED, SDL_CONTROLLERDEVICEREMOVED) and also call gamepad_update() each frame. Let me find where the mouse wheel handling is and add after that.

2454-        }
2455-        // Track mouse buttons
2456-        if (event.type == SDL_MOUSEBUTTONDOWN) {
2457-            int btn = event.button.button - 1;  // SDL buttons are 1-indexed
2458-            if (btn >= 0 && btn < MAX_MOUSE_BUTTONS) {
2459-                mouse_buttons_current[btn] = true;
2460-            }
2461-        }
2462-        if (event.type == SDL_MOUSEBUTTONUP) {
2463-            int btn = event.button.button - 1;
2464-            if (btn >= 0 && btn < MAX_MOUSE_BUTTONS) {
2465-                mouse_buttons_current[btn] = false;
2466-            }
2467-        }
2468-        // Track mouse wheel
2469:        if (event.type == SDL_MOUSEWHEEL) {
2470-            mouse_wheel_x += event.wheel.x;
2471-            mouse_wheel_y += event.wheel.y;
2472-        }
2473-        // Handle window focus events - resync timing to prevent catch-up stutter
2474-        if (event.type == SDL_WINDOWEVENT) {
2475-            if (event.window.event == SDL_WINDOWEVENT_FOCUS_GAINED) {
2476-                timing_resync();
2477-            }
2478-        }
2479-    }
2480-
2481-    // Fixed timestep physics/input loop (120Hz)
2482-    while (physics_lag >= PHYSICS_RATE) {
2483-        // Clear commands on all layers at start of update
... [1 more lines]

Let me add gamepad hotplug handling after the mouse wheel event handling, and also call gamepad_update() after the event loop. I also need to initialize gamepad support at startup.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2464→            if (btn >= 0 && btn < MAX_MOUSE_BUTTONS) {
  2465→                mouse_buttons_current[btn] = false;
  2466→            }
  2467→        }
  2468→        // Track mouse wheel
  2469→        if (event.type == SDL_MOUSEWHEEL) {
  2470→            mouse_wheel_x += event.wheel.x;
  2471→            mouse_wheel_y += event.wheel.y;
  2472→        }
  2473→        // Handle window focus events - resync timing to prevent catch-up stutter
  2474→        if (event.type == SDL_WINDOWEVENT) {
  2475→            if (event.window.event == SDL_WINDOWEVENT_FOCUS_GAINED) {
  2476→                timing_resync();
  2477→            }
  2478→        }
  2479→        // Gamepad hotplug handling
  2480→        if (event.type == SDL_CONTROLLERDEVICEADDED) {
  2481→            if (!gamepad) {
  2482→                gamepad = SDL_GameControllerOpen(event.cdevice.which);
  2483→                if (gamepad) {
  2484→                    printf("Gamepad connected: %s\n", SDL_GameControllerName(gamepad));
  2485→                }
  2486→            }
  2487→        }
  2488→        if (event.type == SDL_CONTROLLERDEVICEREMOVED) {
  2489→            if (gamepad && event.cdevice.which == SDL_JoystickInstanceID(SDL_GameControllerGetJoystick(gamepad))) {
  2490→                printf("Gamepad disconnected\n");
  2491→                SDL_GameControllerClose(gamepad);
  2492→                gamepad = NULL;
... [17 more lines]

Now I need to add SDL gamecontroller initialization. Let me find where SDL_Init is called and ensure game controller is included, and also try to open any already-connected gamepads at startup.

2669-    #endif
2670-}
2671-
2672-int main(int argc, char* argv[]) {
2673-    printf("Anchor Engine starting...\n");
2674-
2675-    // Change working directory to game folder (passed as argument, like LÖVE)
2676-    if (argc > 1) {
2677-        const char* game_folder = argv[1];
2678-        #ifdef _WIN32
2679-        _chdir(game_folder);
2680-        #else
2681-        chdir(game_folder);
2682-        #endif
2683-        printf("Game folder: %s\n", game_folder);
2684-    }
2685-
2686-    printf("Loading: main.lua\n");
2687-
2688-    // Initialize SDL
2689:    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_GAMECONTROLLER) < 0) {
2690:        fprintf(stderr, "SDL_Init failed: %s\n", SDL_GetError());
2691-        return 1;
2692-    }
2693-
2694-    #ifdef __EMSCRIPTEN__
2695-    // Request WebGL 2.0 (OpenGL ES 3.0)
2696-    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
2697-    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
2698-    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
... [12 more lines]

Good, SDL_INIT_GAMECONTROLLER is already included. Now I need to add initialization code that checks for already-connected gamepads at startup. Let me find where I should add this - probably right after window/GL context creation and before the main loop.

No matches found

Let me search for where register_lua_bindings is called:

2827-    \ TexCoord attribute (location 1): 2 floats
2828-    glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(float), (void*)(2 * sizeof(float)));
2829-    glEnableVertexAttribArray(1);
2830-
2831-    glBindVertexArray(0);
2832-    printf("Screen VAO/VBO created\n");
2833-
2834-    // Initialize Lua
2835-    L = luaL_newstate();
2836-    if (!L) {
2837-        fprintf(stderr, "luaL_newstate failed\n");
2838-        shutdown();
2839-        return 1;
2840-    }
2841-    luaL_openlibs(L);
2842:    register_lua_bindings(L);
2843-
2844-    // Load and run script with traceback
2845-    lua_pushcfunction(L, traceback);
2846-    int err_handler = lua_gettop(L);
2847-    if (luaL_loadfile(L, "main.lua") != LUA_OK) {
2848-        snprintf(error_message, sizeof(error_message), "%s", lua_tostring(L, -1));
2849-        fprintf(stderr, "ERROR: %s\n", error_message);
2850-        lua_pop(L, 2);  // error + traceback
2851-        error_state = true;
2852-    } else if (lua_pcall(L, 0, 0, err_handler) != LUA_OK) {
2853-        snprintf(error_message, sizeof(error_message), "%s", lua_tostring(L, -1));
2854-        fprintf(stderr, "ERROR: %s\n", error_message);
2855-        lua_pop(L, 2);  // error + traceback
2856-        error_state = true;
... [1 more lines]

I'll add gamepad initialization right after register_lua_bindings is called. Let me add the gamepad initialization:

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2837→        fprintf(stderr, "luaL_newstate failed\n");
  2838→        shutdown();
  2839→        return 1;
  2840→    }
  2841→    luaL_openlibs(L);
  2842→    register_lua_bindings(L);
  2843→
  2844→    // Initialize gamepad (check for already-connected controllers)
  2845→    for (int i = 0; i < SDL_NumJoysticks(); i++) {
  2846→        if (SDL_IsGameController(i)) {
  2847→            gamepad = SDL_GameControllerOpen(i);
  2848→            if (gamepad) {
  2849→                printf("Gamepad found at startup: %s\n", SDL_GameControllerName(gamepad));
  2850→                break;  // Only use first gamepad
  2851→            }
  2852→        }
  2853→    }
  2854→
  2855→    // Load and run script with traceback
  2856→    lua_pushcfunction(L, traceback);
  2857→    int err_handler = lua_gettop(L);
  2858→    if (luaL_loadfile(L, "main.lua") != LUA_OK) {
  2859→        snprintf(error_message, sizeof(error_message), "%s", lua_tostring(L, -1));

Now I need to add the Lua bindings for gamepad functions:- gamepad_is_connected()
- gamepad_get_axis(axis)
- input_set_deadzone(value)Let me add these after the existing action binding Lua functions.

1950→    return 1;
  1951→}
  1952→
  1953→static int l_input_unbind(lua_State* L) {
  1954→    const char* action = luaL_checkstring(L, 1);
  1955→    const char* control = luaL_checkstring(L, 2);
  1956→    lua_pushboolean(L, input_unbind_control(action, control));
  1957→    return 1;
  1958→}
  1959→
  1960→static int l_input_unbind_all(lua_State* L) {
  1961→    const char* action = luaL_checkstring(L, 1);
  1962→    input_unbind_all_controls(action);
  1963→    return 0;
  1964→}
  1965→
  1966→static int l_input_bind_all(lua_State* L) {
  1967→    (void)L;  // Unused
  1968→    input_bind_all_defaults();
  1969→    return 0;
  1970→}
  1971→
  1972→static int l_input_get_axis(lua_State* L) {
  1973→    const char* negative = luaL_checkstring(L, 1);
  1974→    const char* positive = luaL_checkstring(L, 2);
  1975→    lua_pushnumber(L, input_get_axis(negative, positive));
  1976→    return 1;
  1977→}
  1978→
  1979→static int l_input_get_vector(lua_State* L) {
... [20 more lines]

Let me add the gamepad Lua binding functions before register_lua_bindings:

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1975→    lua_pushnumber(L, input_get_axis(negative, positive));
  1976→    return 1;
  1977→}
  1978→
  1979→static int l_input_get_vector(lua_State* L) {
  1980→    const char* left = luaL_checkstring(L, 1);
  1981→    const char* right = luaL_checkstring(L, 2);
  1982→    const char* up = luaL_checkstring(L, 3);
  1983→    const char* down = luaL_checkstring(L, 4);
  1984→    float x, y;
  1985→    input_get_vector(left, right, up, down, &x, &y);
  1986→    lua_pushnumber(L, x);
  1987→    lua_pushnumber(L, y);
  1988→    return 2;
  1989→}
  1990→
  1991→static int l_gamepad_is_connected(lua_State* L) {
  1992→    lua_pushboolean(L, gamepad != NULL);
  1993→    return 1;
  1994→}
  1995→
  1996→static int l_gamepad_get_axis(lua_State* L) {
  1997→    const char* axis_name = luaL_checkstring(L, 1);
  1998→    int axis_info = gamepad_axis_from_name(axis_name);
  1999→    if (axis_info < 0) {
  2000→        lua_pushnumber(L, 0);
  2001→        return 1;
  2002→    }
  2003→    int axis = axis_info & 0xFF;
... [21 more lines]

Now I need to register these new functions. Let me find the input registration section:

2060→    lua_register(L, "mouse_wheel", l_mouse_wheel);
  2061→    // Input - Action binding
  2062→    lua_register(L, "input_bind", l_input_bind);
  2063→    lua_register(L, "input_unbind", l_input_unbind);
  2064→    lua_register(L, "input_unbind_all", l_input_unbind_all);
  2065→    lua_register(L, "input_bind_all", l_input_bind_all);
  2066→    lua_register(L, "input_get_axis", l_input_get_axis);
  2067→    lua_register(L, "input_get_vector", l_input_get_vector);
  2068→    lua_register(L, "is_down", l_is_down);
  2069→    lua_register(L, "is_pressed", l_is_pressed);
  2070→    lua_register(L, "is_released", l_is_released);
  2071→}
  2072→
  2073→// Main loop state (needed for emscripten)
  2074→static bool running = true;
  2075→static Uint64 perf_freq = 0;
  2076→static Uint64 last_time = 0;
  2077→static double physics_lag = 0.0;
  2078→static double render_lag = 0.0;
  2079→static Uint64 step = 0;
  2080→static double game_time = 0.0;
  2081→static Uint64 frame = 0;
  2082→
  2083→// VSync snap frequencies (computed at init based on display refresh rate)
  2084→static double snap_frequencies[8];
  2085→static int snap_frequency_count = 0;
  2086→
  2087→// Reset timing accumulators (call on focus gain, scene transitions, etc.)
  2088→// This prevents accumulated lag from causing catch-up updates
  2089→static void timing_resync(void) {

Let me add the gamepad registrations after the input action binding ones:

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2063→    lua_register(L, "input_unbind", l_input_unbind);
  2064→    lua_register(L, "input_unbind_all", l_input_unbind_all);
  2065→    lua_register(L, "input_bind_all", l_input_bind_all);
  2066→    lua_register(L, "input_get_axis", l_input_get_axis);
  2067→    lua_register(L, "input_get_vector", l_input_get_vector);
  2068→    lua_register(L, "input_set_deadzone", l_input_set_deadzone);
  2069→    lua_register(L, "is_down", l_is_down);
  2070→    lua_register(L, "is_pressed", l_is_pressed);
  2071→    lua_register(L, "is_released", l_is_released);
  2072→    // Input - Gamepad
  2073→    lua_register(L, "gamepad_is_connected", l_gamepad_is_connected);
  2074→    lua_register(L, "gamepad_get_axis", l_gamepad_get_axis);
  2075→}
  2076→
  2077→// Main loop state (needed for emscripten)
  2078→static bool running = true;
  2079→static Uint64 perf_freq = 0;

Now let me build and then update the test to add gamepad bindings.

anchor.c

src/anchor.c(602): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(596): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data

src/anchor.c(822): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1582): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Build successful. Now let me update the test to add gamepad bindings for movement and action.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→print("main.lua loaded - Input Test (Step 6: Gamepad)")
     2→
     3→set_shape_filter("rough")
     4→
     5→local screen_w, screen_h = 480, 270
     6→
     7→-- Use input_bind_all to create default bindings for all keys/mouse buttons
     8→input_bind_all()
     9→print("input_bind_all() called - all keys now have actions")
    10→
    11→-- Set up custom action bindings (keyboard + mouse)
    12→input_bind('move_up', 'key:w')
    13→input_bind('move_up', 'key:up')
    14→input_bind('move_down', 'key:s')
    15→input_bind('move_down', 'key:down')
    16→input_bind('move_left', 'key:a')
    17→input_bind('move_left', 'key:left')
    18→input_bind('move_right', 'key:d')
    19→input_bind('move_right', 'key:right')
    20→input_bind('action', 'key:space')
    21→input_bind('action', 'mouse:1')
    22→
    23→-- Add gamepad bindings
    24→input_bind('move_up', 'button:dpup')
    25→input_bind('move_up', 'axis:lefty-')     -- Left stick up (negative Y)
    26→input_bind('move_down', 'button:dpdown')
    27→input_bind('move_down', 'axis:lefty+')   -- Left stick down (positive Y)
    28→input_bind('move_left', 'button:dpleft')
    29→input_bind('move_left', 'axis:leftx-')   -- Left stick left (negative X)
... [11 more lines]

Good. Now let me also add a visual indicator for gamepad connection and show raw axis values for debugging. Let me add that to the update function.

195→        input_bind('action', 'mouse:1')
   196→        print("REBIND: mouse:1 added back to 'action' - left click works again!")
   197→    end
   198→
   199→    -- Test bind_all actions (pressing Q should print via 'q' action)
   200→    if is_pressed('q') then
   201→        print("Q pressed via bind_all action 'q'")
   202→    end
   203→    if is_pressed('mouse_2') then
   204→        print("Middle mouse pressed via bind_all action 'mouse_2'")
   205→    end
   206→    if is_pressed('mouse_3') then
   207→        print("Right mouse pressed via bind_all action 'mouse_3'")
   208→    end
   209→
   210→    -- === Raw mouse tests (for cursor color, wheel, delta) ===
   211→    if mouse_is_pressed(2) then
   212→        print("Middle mouse PRESSED!")  -- SDL button 2 = middle
   213→    end
   214→    if mouse_is_pressed(3) then
   215→        print("Right mouse PRESSED!")  -- SDL button 3 = right
   216→    end
   217→
   218→    if mouse_is_released(2) then
   219→        print("Middle mouse RELEASED!")
   220→    end
   221→    if mouse_is_released(3) then
   222→        print("Right mouse RELEASED!")
   223→    end
   224→

Let me add gamepad status printing after the bind_all tests:

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   195→        input_bind('action', 'mouse:1')
   196→        print("REBIND: mouse:1 added back to 'action' - left click works again!")
   197→    end
   198→
   199→    -- Test bind_all actions (pressing Q should print via 'q' action)
   200→    if is_pressed('q') then
   201→        print("Q pressed via bind_all action 'q'")
   202→    end
   203→    if is_pressed('mouse_2') then
   204→        print("Middle mouse pressed via bind_all action 'mouse_2'")
   205→    end
   206→    if is_pressed('mouse_3') then
   207→        print("Right mouse pressed via bind_all action 'mouse_3'")
   208→    end
   209→
   210→    -- === Gamepad tests ===
   211→    -- Print gamepad button presses (A and X are bound to action, B is not)
   212→    if is_pressed('button:b') then
   213→        print("Gamepad B pressed (not bound to action)")
   214→    end
   215→    -- Print raw axis values on G key (for debugging)
   216→    if is_pressed('g') then
   217→        print(string.format("Gamepad axes - LX:%.2f LY:%.2f RX:%.2f RY:%.2f LT:%.2f RT:%.2f",
   218→            gamepad_get_axis('leftx'), gamepad_get_axis('lefty'),
   219→            gamepad_get_axis('rightx'), gamepad_get_axis('righty'),
   220→            gamepad_get_axis('triggerleft'), gamepad_get_axis('triggerright')))
   221→    end
   222→
   223→    -- === Raw mouse tests (for cursor color, wheel, delta) ===
... [4 more lines]

Wait, is_pressed('button:b') won't work because 'button:b' isn't an action name - it's a control string. I need to either:1. Use key_is_down equivalent for buttons (would need to add gamepad_is_pressed)
2. Or create an action for itActually, for now let me just change that to create an action for the B button, to test the system properly. Or better yet, use the bind_all pattern - but bind_all doesn't create gamepad button actions.Let me simplify the test - just remove that line and keep the G key test for axis debugging. The main test is that the movement and action work with gamepad.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   206→    if is_pressed('mouse_3') then
   207→        print("Right mouse pressed via bind_all action 'mouse_3'")
   208→    end
   209→
   210→    -- === Gamepad tests ===
   211→    -- Print raw axis values on G key (for debugging)
   212→    if is_pressed('g') and gamepad_is_connected() then
   213→        print(string.format("Gamepad axes - LX:%.2f LY:%.2f RX:%.2f RY:%.2f LT:%.2f RT:%.2f",
   214→            gamepad_get_axis('leftx'), gamepad_get_axis('lefty'),
   215→            gamepad_get_axis('rightx'), gamepad_get_axis('righty'),
   216→            gamepad_get_axis('triggerleft'), gamepad_get_axis('triggerright')))

Good. Step 6 is ready for testing. Let me present the test checklist to the user.

The user is asking how to connect a PS5 controller (DualSense) to their Windows PC. Let me give them practical instructions.

The user wants to skip gamepad testing for now and move on to Step 7: Chords. That's fine - we can test gamepad later when their controller is charged.

- [completed] Step 1: Raw keyboard state
- [completed] Step 2: Mouse state
- [completed] Step 3: Basic action binding
- [completed] Step 4: Unbinding and bind_all
- [completed] Step 5: Axis helpers
- [completed] Step 6: Gamepad support
- [in_progress] Step 7: Chords
- [pending] Step 8: Sequences
- [pending] Step 9: Holds
- [pending] Step 10: Input type detection
- [pending] Step 11: Rebinding capture
- [pending] Step 12: Utility functions

Moving on to Step 7: Chords. From the implementation plan:

**Step 7: Chords**
- `input_bind_chord(action, controls...)` — multiple controls that must all be held
- Example: `input_bind_chord('sprint_jump', 'key:shift', 'key:space')`
- Chord is "pressed" when ALL controls are down and at least one just became pressed
- Chord is "released" when ANY control is released

I need to:
1. Add a chord binding function that takes an action name and multiple control strings
2. Store chord bindings separately (or as a special type of binding)
3. Update the action state queries to check chords

Let me implement this.

535:**Step 7: Chords**
536-- [ ] Chord struct: name, array of action names, pressed/down/released state
537-- [ ] `input_bind_chord(name, actions)` — e.g., `('sprint_jump', {'shift', 'space'})`
538-- [ ] Chord is down when ALL actions are down
539-- [ ] Chord pressed when it becomes down (wasn't down last frame)
540-- [ ] Chord released when it stops being down
541-- [ ] Chords queryable via `is_pressed`/`is_down`/`is_released` (same namespace as actions)
542-
543-**Step 8: Sequences**
544-- [ ] Sequence struct: name, array of {action, delay} pairs, state machine
545-- [ ] `input_bind_sequence(name, sequence)` — e.g., `('dash', {'right', 0.2, 'right'})`

So chords work with action names, not control strings directly. This is cleaner because:- `input_bind_chord('sprint_jump', {'shift', 'space'})` - uses actions 'shift' and 'space' that were created by input_bind_all()

The chord:- Is down when ALL its actions are down
- Is pressed when it becomes down (wasn't down last frame)- Is released when it stops being downI'll implement this by:1. Creating a Chord struct with name and array of action names2. Storing chords in a separate registry
3. Computing chord state (down/pressed/released) by checking all its actions4. Making chords queryable via the same is_down/is_pressed/is_released functions (check chords if action not found)

Let me implement this.

790→    ControlType type;
   791→    int code;       // Scancode for keys, button number for mouse/gamepad
   792→    int sign;       // For axes: +1 or -1 (positive or negative direction)
   793→} Control;
   794→
   795→#define MAX_CONTROLS_PER_ACTION 8
   796→#define MAX_ACTIONS 128
   797→#define MAX_ACTION_NAME 32
   798→
   799→typedef struct {
   800→    char name[MAX_ACTION_NAME];
   801→    Control controls[MAX_CONTROLS_PER_ACTION];
   802→    int control_count;
   803→} Action;
   804→
   805→static Action actions[MAX_ACTIONS];
   806→static int action_count = 0;
   807→
   808→// Find or create an action by name
   809→static Action* action_get_or_create(const char* name) {
   810→    // Find existing
   811→    for (int i = 0; i < action_count; i++) {
   812→        if (strcmp(actions[i].name, name) == 0) {
   813→            return &actions[i];
   814→        }
   815→    }
   816→    // Create new
   817→    if (action_count >= MAX_ACTIONS) {
   818→        printf("Warning: Max actions reached\n");
   819→        return NULL;
... [20 more lines]

I'll add the Chord struct and registry right after the Action definitions. Then I'll add chord-related functions.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   795→#define MAX_CONTROLS_PER_ACTION 8
   796→#define MAX_ACTIONS 128
   797→#define MAX_ACTION_NAME 32
   798→
   799→typedef struct {
   800→    char name[MAX_ACTION_NAME];
   801→    Control controls[MAX_CONTROLS_PER_ACTION];
   802→    int control_count;
   803→} Action;
   804→
   805→static Action actions[MAX_ACTIONS];
   806→static int action_count = 0;
   807→
   808→// Chord: multiple actions that must all be held simultaneously
   809→#define MAX_ACTIONS_PER_CHORD 4
   810→#define MAX_CHORDS 32
   811→
   812→typedef struct {
   813→    char name[MAX_ACTION_NAME];
   814→    char action_names[MAX_ACTIONS_PER_CHORD][MAX_ACTION_NAME];
   815→    int action_count;
   816→    bool was_down;  // For edge detection
   817→} Chord;
   818→
   819→static Chord chords[MAX_CHORDS];
   820→static int chord_count = 0;
   821→
   822→// Find or create an action by name
   823→static Action* action_get_or_create(const char* name) {
... [1 more lines]

Now I need to add chord functions. Let me find a good place to add them - after the action state functions but before the unbind functions.

1024-
1025-// Query action state - is_pressed returns true if ANY bound control was just pressed
1026-static bool action_is_pressed(const char* name) {
1027-    Action* action = action_find(name);
1028-    if (!action) return false;
1029-
1030-    for (int i = 0; i < action->control_count; i++) {
1031-        if (control_is_pressed(&action->controls[i])) {
1032-            return true;
1033-        }
1034-    }
1035-    return false;
1036-}
1037-
1038-// Query action state - is_released returns true if ANY bound control was just released
1039:static bool action_is_released(const char* name) {
1040-    Action* action = action_find(name);
1041-    if (!action) return false;
1042-
1043-    for (int i = 0; i < action->control_count; i++) {
1044-        if (control_is_released(&action->controls[i])) {
1045-            return true;
1046-        }
1047-    }
1048-    return false;
1049-}
1050-
1051-// Unbind a specific control from an action
1052-static bool input_unbind_control(const char* action_name, const char* control_str) {
1053-    Action* action = action_find(action_name);
... [33 more lines]

I'll add the chord functions after action_is_released and before input_unbind_control. Then I'll need to modify the is_down/is_pressed/is_released Lua functions to also check chords.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1034→    }
  1035→    return false;
  1036→}
  1037→
  1038→// Query action state - is_released returns true if ANY bound control was just released
  1039→static bool action_is_released(const char* name) {
  1040→    Action* action = action_find(name);
  1041→    if (!action) return false;
  1042→
  1043→    for (int i = 0; i < action->control_count; i++) {
  1044→        if (control_is_released(&action->controls[i])) {
  1045→            return true;
  1046→        }
  1047→    }
  1048→    return false;
  1049→}
  1050→
  1051→// Chord functions
  1052→static Chord* chord_find(const char* name) {
  1053→    for (int i = 0; i < chord_count; i++) {
  1054→        if (strcmp(chords[i].name, name) == 0) {
  1055→            return &chords[i];
  1056→        }
  1057→    }
  1058→    return NULL;
  1059→}
  1060→
  1061→// Check if chord is currently down (all actions held)
  1062→static bool chord_is_down(Chord* chord) {
... [63 more lines]

Now I need to:
1. Add input_bind_chord function
2. Call chords_post_update in the frame loop
3. Update the Lua bindings to use the unified input_is_* functions
4. Add Lua binding for input_bind_chord

Let me add input_bind_chord first, then update the Lua bindings.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1082→    bool down_now = chord_is_down(chord);
  1083→    return !down_now && chord->was_down;
  1084→}
  1085→
  1086→// Update chord edge detection state (call at end of frame)
  1087→static void chords_post_update(void) {
  1088→    for (int i = 0; i < chord_count; i++) {
  1089→        chords[i].was_down = chord_is_down(&chords[i]);
  1090→    }
  1091→}
  1092→
  1093→// Bind a chord (multiple actions that must all be held)
  1094→// action_names is an array of action name strings, count is the number of actions
  1095→static bool input_bind_chord_internal(const char* name, const char** action_names, int count) {
  1096→    if (count <= 0 || count > MAX_ACTIONS_PER_CHORD) {
  1097→        printf("Warning: Chord must have 1-%d actions\n", MAX_ACTIONS_PER_CHORD);
  1098→        return false;
  1099→    }
  1100→
  1101→    // Check if chord already exists
  1102→    Chord* chord = chord_find(name);
  1103→    if (chord) {
  1104→        printf("Warning: Chord '%s' already exists\n", name);
  1105→        return false;
  1106→    }
  1107→
  1108→    if (chord_count >= MAX_CHORDS) {
  1109→        printf("Warning: Max chords reached\n");
  1110→        return false;
... [21 more lines]

Now I need to:
1. Update the Lua is_down/is_pressed/is_released bindings to use the unified functions
2. Add the Lua binding for input_bind_chord
3. Call chords_post_update in the frame loopLet me update the Lua bindings first:

916-    // Add new control
917-    if (action->control_count >= MAX_CONTROLS_PER_ACTION) {
918-        printf("Warning: Max controls per action reached for '%s'\n", action_name);
919-        return false;
920-    }
921-
922-    action->controls[action->control_count++] = ctrl;
923-    return true;
924-}
925-
926-\ Helper: check if gamepad axis exceeds deadzone in specified direction
927-static bool axis_is_active(int axis, int sign) {
928-    if (axis < 0 || axis >= SDL_CONTROLLER_AXIS_MAX) return false;
929-    float value = gamepad_axes[axis];
930-    if (sign > 0) return value > gamepad_deadzone;   // Positive direction
931-    if (sign < 0) return value < -gamepad_deadzone;  // Negative direction
932-    return fabsf(value) > gamepad_deadzone;          // Either direction
933-}
934-
935-// Check if a single control is currently down
936:static bool control_is_down(const Control* ctrl) {
937-    switch (ctrl->type) {
938-        case CONTROL_KEY:
939-            return keys_current[ctrl->code];
940-        case CONTROL_MOUSE_BUTTON:
941-            if (ctrl->code >= 1 && ctrl->code <= MAX_MOUSE_BUTTONS) {
942-                return mouse_buttons_current[ctrl->code - 1];
943-            }
944-            return false;
945-        case CONTROL_GAMEPAD_BUTTON:
... [137 more lines]

I need to:1. Update l_is_down, l_is_pressed, l_is_released to use the unified input_is_* functions instead of action_is_*2. Add l_input_bind_chord Lua binding3. Call chords_post_update in the frame loopLet me update the Lua bindings:

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2049→    lua_pushboolean(L, input_bind_control(action, control));
  2050→    return 1;
  2051→}
  2052→
  2053→static int l_is_down(lua_State* L) {
  2054→    const char* name = luaL_checkstring(L, 1);
  2055→    lua_pushboolean(L, input_is_down(name));  // Checks both actions and chords
  2056→    return 1;
  2057→}
  2058→
  2059→static int l_is_pressed(lua_State* L) {
  2060→    const char* name = luaL_checkstring(L, 1);
  2061→    lua_pushboolean(L, input_is_pressed(name));  // Checks both actions and chords
  2062→    return 1;
  2063→}
  2064→
  2065→static int l_is_released(lua_State* L) {
  2066→    const char* name = luaL_checkstring(L, 1);
  2067→    lua_pushboolean(L, input_is_released(name));  // Checks both actions and chords
  2068→    return 1;
  2069→}
  2070→
  2071→// input_bind_chord(name, {action1, action2, ...})
  2072→static int l_input_bind_chord(lua_State* L) {
  2073→    const char* name = luaL_checkstring(L, 1);
  2074→    luaL_checktype(L, 2, LUA_TTABLE);
  2075→
  2076→    const char* action_names[MAX_ACTIONS_PER_CHORD];
  2077→    int count = 0;
... [18 more lines]

Now I need to:1. Register l_input_bind_chord in register_lua_bindings2. Call chords_post_update in the frame loopLet me do both:

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2196→    lua_register(L, "mouse_is_pressed", l_mouse_is_pressed);
  2197→    lua_register(L, "mouse_is_released", l_mouse_is_released);
  2198→    lua_register(L, "mouse_wheel", l_mouse_wheel);
  2199→    // Input - Action binding
  2200→    lua_register(L, "input_bind", l_input_bind);
  2201→    lua_register(L, "input_bind_chord", l_input_bind_chord);
  2202→    lua_register(L, "input_unbind", l_input_unbind);
  2203→    lua_register(L, "input_unbind_all", l_input_unbind_all);
  2204→    lua_register(L, "input_bind_all", l_input_bind_all);
  2205→    lua_register(L, "input_get_axis", l_input_get_axis);
  2206→    lua_register(L, "input_get_vector", l_input_get_vector);
  2207→    lua_register(L, "input_set_deadzone", l_input_set_deadzone);
  2208→    lua_register(L, "is_down", l_is_down);
  2209→    lua_register(L, "is_pressed", l_is_pressed);
  2210→    lua_register(L, "is_released", l_is_released);
  2211→    // Input - Gamepad
  2212→    lua_register(L, "gamepad_is_connected", l_gamepad_is_connected);

Now I need to add the chords_post_update call in the frame loop after input_post_update:

2704-        step++;
2705-        game_time += PHYSICS_RATE;
2706-        physics_lag -= PHYSICS_RATE;
2707-
2708-        // Copy current input state to previous for next frame's edge detection
2709:        input_post_update();
2710-    }
2711-
2712-    // Render at 60Hz (for chunky pixel movement on high-refresh monitors)
2713-    if (render_lag >= RENDER_RATE) {
2714-        render_lag -= RENDER_RATE;

Let me add the chords_post_update call right after input_post_update:

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2704→        step++;
  2705→        game_time += PHYSICS_RATE;
  2706→        physics_lag -= PHYSICS_RATE;
  2707→
  2708→        // Copy current input state to previous for next frame's edge detection
  2709→        input_post_update();
  2710→        chords_post_update();
  2711→    }
  2712→
  2713→    // Render at 60Hz (for chunky pixel movement on high-refresh monitors)
  2714→    if (render_lag >= RENDER_RATE) {
  2715→        render_lag -= RENDER_RATE;
  2716→        frame++;
  2717→

Now let me build and update the test:

anchor.c

src/anchor.c(602): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(596): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data

src/anchor.c(836): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1114): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1120): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1700): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Build successful. Now let me update the test to add a chord example.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→print("main.lua loaded - Input Test (Step 7: Chords)")
     2→
     3→set_shape_filter("rough")
     4→
     5→local screen_w, screen_h = 480, 270
     6→
     7→-- Use input_bind_all to create default bindings for all keys/mouse buttons
     8→input_bind_all()
     9→print("input_bind_all() called - all keys now have actions")
    10→
    11→-- Set up chord: Shift+Space triggers 'super_action'
    12→input_bind_chord('super_action', {'lshift', 'space'})
    13→print("Chord 'super_action' = Shift + Space")
    14→
    15→-- Set up custom action bindings (keyboard + mouse)
    16→input_bind('move_up', 'key:w')
    17→input_bind('move_up', 'key:up')

Now let me add the chord test to the update function:

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   178→    -- Apply movement (diagonal will be ~0.707 speed, not 1.414x)
   179→    ball.x = ball.x + move_x * move_speed * dt
   180→    ball.y = ball.y + move_y * move_speed * dt
   181→
   182→    -- Check is_pressed for flash effect - triggers on space OR left click
   183→    if is_pressed('action') then
   184→        pressed_flash = 0.3
   185→        print("ACTION PRESSED! (space or left click)")
   186→    end
   187→
   188→    -- Check is_released
   189→    if is_released('action') then
   190→        print("ACTION RELEASED!")
   191→    end
   192→
   193→    -- === Chord test: Shift+Space triggers 'super_action' ===
   194→    if is_pressed('super_action') then
   195→        pressed_flash = 0.5  -- Longer flash for chord
   196→        print("SUPER ACTION PRESSED! (Shift + Space chord)")
   197→    end
   198→    if is_released('super_action') then
   199→        print("SUPER ACTION RELEASED!")
   200→    end
   201→
   202→    -- === Test unbind/rebind with U/R keys ===
   203→    if is_pressed('u') then
   204→        input_unbind('action', 'mouse:1')

Step 7 is ready for testing.

The user wants me to write a summary before auto-compaction. Let me summarize everything accomplished in this session.

[2mCompacted (ctrl+o to see full summary)[22m

The user wants to continue with the next step. Based on the summary, we just completed Step 7 (Chords) and the next step is Step 8 (Sequences).

Let me update the todo list to mark Step 7 as completed and start Step 8.

Looking at the implementation plan, Step 8 is:
- Step 8: Sequences - `input_bind_sequence(name, sequence)` for combos like double-tap

I should read the implementation plan to get the exact details of what needs to be done for Step 8.

1→# Anchor Implementation Plan
     2→
     3→C engine with YueScript scripting, OpenGL rendering, targeting Windows and Web.
     4→
     5→---
     6→
     7→## Summary of Key Decisions
     8→
     9→| Area | Decision | Rationale |
    10→|------|----------|-----------|
    11→| Renderer | OpenGL | Smooth rotation, additive blending, performance headroom, console-portable |
    12→| Audio | TBD (miniaudio or SoLoud) | Need pitch shifting; SDL_mixer insufficient |
    13→| Physics | Box2D 3.1 | Already used, true ball-to-ball collisions needed |
    14→| Scripting | Lua 5.4 + YueScript | Build-time compilation with `-r` flag for line numbers |
    15→| Timestep | Fixed 120Hz physics, 60Hz render | Decoupled for pixel-perfect visuals with responsive input |
    16→| Resolution | Per-game configurable | 480×270, 640×360, or custom; aspect-ratio scaling with letterboxing |
    17→| C Structure | Single anchor.c | Monolithic file, easier navigation |
    18→| Resources | Live forever | Games are small enough; no unloading needed |
    19→| Linking | Static | No DLLs; SDL2, Lua, audio all compiled in |
    20→| Distribution | Single executable | Zip-append for game content, extractable by modders |
    21→
    22→---
    23→
    24→## Build Strategy
    25→
    26→### YueScript Compilation
    27→
    28→**Build-time compilation** — compile `.yue` → `.lua` during build, not at runtime.
    29→
    30→```
... [170 more lines]

- [completed] Step 1: Raw keyboard state
- [completed] Step 2: Mouse state
- [completed] Step 3: Basic action binding
- [completed] Step 4: Unbinding and bind_all
- [completed] Step 5: Axis helpers
- [completed] Step 6: Gamepad support
- [completed] Step 7: Chords
- [in_progress] Step 8: Sequences
- [pending] Step 9: Holds
- [pending] Step 10: Input type detection
- [pending] Step 11: Rebinding capture
- [pending] Step 12: Utility functions

Let me read more of the implementation plan to find Step 8 (Sequences) details.

533-- [ ] Control string parsing: `'button:a'`, `'button:start'`, `'axis:leftx+'`, `'axis:lefty-'`
534-
535-**Step 7: Chords**
536-- [ ] Chord struct: name, array of action names, pressed/down/released state
537-- [ ] `input_bind_chord(name, actions)` — e.g., `('sprint_jump', {'shift', 'space'})`
538-- [ ] Chord is down when ALL actions are down
539-- [ ] Chord pressed when it becomes down (wasn't down last frame)
540-- [ ] Chord released when it stops being down
541-- [ ] Chords queryable via `is_pressed`/`is_down`/`is_released` (same namespace as actions)
542-
543:**Step 8: Sequences**
544-- [ ] Sequence struct: name, array of {action, delay} pairs, state machine
545-- [ ] `input_bind_sequence(name, sequence)` — e.g., `('dash', {'right', 0.2, 'right'})`
546-- [ ] State machine tracks: current step, last press time
547-- [ ] Advances when next action pressed within time window
548-- [ ] Resets if timeout or wrong action pressed
549-- [ ] Sequence fires (is_pressed returns true) when final action completes in time
550:- [ ] Sequences queryable via `is_pressed`/`is_down`/`is_released`
551-
552-**Step 9: Holds**
553-- [ ] Hold struct: name, source action, duration, state (waiting/triggered)
554-- [ ] `input_bind_hold(name, duration, action)` — e.g., `('charge', 1.0, 'attack')`
555-- [ ] Tracks how long source action has been held
556-- [ ] `is_pressed` fires on the frame hold duration is reached
557-- [ ] `is_down` true while held after duration reached
558-- [ ] `is_released` fires when released after duration was reached
559-- [ ] Resets when source action released before duration
560-- [ ] Holds queryable via `is_pressed`/`is_down`/`is_released`
--
639-
... [20 more lines]

Now I have the spec for Step 8 (Sequences):

**Step 8: Sequences**
- [ ] Sequence struct: name, array of {action, delay} pairs, state machine
- [ ] `input_bind_sequence(name, sequence)` — e.g., `('dash', {'right', 0.2, 'right'})`
- [ ] State machine tracks: current step, last press time
- [ ] Advances when next action pressed within time window
- [ ] Resets if timeout or wrong action pressed
- [ ] Sequence fires (is_pressed returns true) when final action completes in time
- [ ] Sequences queryable via `is_pressed`/`is_down`/`is_released`

So the design is:
1. A sequence is like "press right, then within 0.2s press right again" for a double-tap dash
2. The state machine needs to track:
   - Current step (which action in the sequence we're waiting for)
   - Last press time (when the last successful step was pressed)
3. When a sequence step is pressed:
   - If we're at step 0, start the sequence
   - If we're at step N and the time since last step is < the delay, advance to step N+1
   - If final step completed in time, fire the sequence
4. Reset conditions:
   - Timeout (time since last step > delay)
   - Wrong action pressed (could be configurable, but let's keep it simple)

The format seems to be alternating: action, delay, action, delay, action
Where the delays are between actions.

Let me read the current anchor.c to see where we are with the input system and add sequences.

805-static Action actions[MAX_ACTIONS];
806-static int action_count = 0;
807-
808-\ Chord: multiple actions that must all be held simultaneously
809-#define MAX_ACTIONS_PER_CHORD 4
810:#define MAX_CHORDS 32
811-
812-typedef struct {
813-    char name[MAX_ACTION_NAME];
814-    char action_names[MAX_ACTIONS_PER_CHORD][MAX_ACTION_NAME];
815-    int action_count;

Good, now let me see more context for the Chord struct and where the unified input functions are, so I can add sequences.

805→static Action actions[MAX_ACTIONS];
   806→static int action_count = 0;
   807→
   808→// Chord: multiple actions that must all be held simultaneously
   809→#define MAX_ACTIONS_PER_CHORD 4
   810→#define MAX_CHORDS 32
   811→
   812→typedef struct {
   813→    char name[MAX_ACTION_NAME];
   814→    char action_names[MAX_ACTIONS_PER_CHORD][MAX_ACTION_NAME];
   815→    int action_count;
   816→    bool was_down;  // For edge detection
   817→} Chord;
   818→
   819→static Chord chords[MAX_CHORDS];
   820→static int chord_count = 0;
   821→
   822→// Find or create an action by name
   823→static Action* action_get_or_create(const char* name) {
   824→    // Find existing
   825→    for (int i = 0; i < action_count; i++) {
   826→        if (strcmp(actions[i].name, name) == 0) {
   827→            return &actions[i];
   828→        }
   829→    }
   830→    // Create new
   831→    if (action_count >= MAX_ACTIONS) {
   832→        printf("Warning: Max actions reached\n");
   833→        return NULL;
   834→    }
... [70 more lines]

Good, now let me find where the unified input functions are (input_is_down, input_is_pressed, input_is_released) and where the chords_post_update function is, so I can add sequences.

1062:static bool chord_is_down(Chord* chord) {
1073:static bool chord_is_pressed(Chord* chord) {
1080:static bool chord_is_released(Chord* chord) {
1087:static void chords_post_update(void) {
1137:static bool input_is_pressed(const char* name) {
2710:        chords_post_update();

Let me read around line 1087 to see the chords_post_update and unified input functions to understand how to add sequences.

1050→
  1051→// Chord functions
  1052→static Chord* chord_find(const char* name) {
  1053→    for (int i = 0; i < chord_count; i++) {
  1054→        if (strcmp(chords[i].name, name) == 0) {
  1055→            return &chords[i];
  1056→        }
  1057→    }
  1058→    return NULL;
  1059→}
  1060→
  1061→// Check if chord is currently down (all actions held)
  1062→static bool chord_is_down(Chord* chord) {
  1063→    if (!chord || chord->action_count == 0) return false;
  1064→    for (int i = 0; i < chord->action_count; i++) {
  1065→        if (!action_is_down(chord->action_names[i])) {
  1066→            return false;
  1067→        }
  1068→    }
  1069→    return true;
  1070→}
  1071→
  1072→// Check if chord was just pressed (is down now, wasn't before)
  1073→static bool chord_is_pressed(Chord* chord) {
  1074→    if (!chord) return false;
  1075→    bool down_now = chord_is_down(chord);
  1076→    return down_now && !chord->was_down;
  1077→}
  1078→
  1079→// Check if chord was just released (was down, isn't now)
... [90 more lines]

Now I have a good understanding of how the chord system works. I need to add sequences. Let me design the sequence system:

1. **Sequence struct**: name, array of steps (action + delay), current step, last press time, and a flag for when the sequence completed

2. **State machine logic**:
   - When an action is pressed, check if it matches the current step's action
   - If it matches and we're within the time window (or this is step 0), advance to next step
   - If the sequence completes, mark it as "just_fired" so is_pressed returns true for one frame
   - If timeout or wrong action, reset to step 0

3. **is_pressed/is_down/is_released for sequences**:
   - is_pressed: true for one frame when sequence completes
   - is_down: probably same as is_pressed (sequences are momentary, not held)
   - is_released: true the frame after is_pressed was true

The format from the spec: `('dash', {'right', 0.2, 'right'})`
This means: press 'right', then within 0.2s press 'right' again.

So the sequence steps are:
- Step 0: action='right', delay=0.2 (time window before step 1)
- Step 1: action='right' (final step)

Wait, let me re-read the spec:
`input_bind_sequence(name, sequence)` — e.g., `('dash', {'right', 0.2, 'right'})`

So the format alternates: action, delay, action, delay, action...
- For `{'right', 0.2, 'right'}`:
  - action1='right', delay_after_action1=0.2, action2='right'

So a 2-step sequence:
- Press 'right' (step 0)
- Within 0.2s, press 'right' again (step 1 - final)


- A longer sequence like `{'a', 0.3, 'b', 0.3, 'c'}` would require pressing 'a', then 'b' within 0.3s, then 'c' within another 0.3s. The delays sit between consecutive actions, so the total steps equals (array length + 1) / 2, with (array length - 1) / 2 delays. I'll store separate arrays for action names and delays, plus the step count and current step index.

For tracking state, I need to record the last press time, a flag for whether the key just fired, and another for detecting release edges. The state machine should work like this: when current_step reaches 0, we're waiting for the first input; pressing it advances to step 1 and logs the timestamp; each subsequent correct press within the time window moves us forward; once current_step matches num_steps, the sequence triggers and resets to idle.

Now I'll structure the data with a Sequence struct holding the action names, timing windows between steps, and tracking variables like current_step, last_press_time, just_fired, and was_fired. The logic checks each sequence on action press: if we're at step 0 and the input matches the first action, advance to step 1.

If we're mid-sequence and the input matches the expected step within the time window, either complete the sequence or move to the next step. If the input doesn't match or we exceed the timing window, reset back to step 0. Wrong actions during a sequence are ignored rather than causing a reset—only timeouts trigger a reset. The update loop monitors each active sequence for timeout conditions by checking if the elapsed time since the last step exceeds the allowed delay. The timeout check should happen each frame rather than continuously. When an action is pressed, I check if it matches the current step—if it does and we're within the time window, advance; otherwise reset and recheck if this action starts a new sequence.

I need a per-frame update function to handle timeout detection and edge state management. The `just_fired` flag should persist for one frame, then get cleared. I'll create `sequences_update(float current_time)` to reset timed-out sequences and manage the fired state transitions, plus `sequences_on_action_pressed(const char* action, float current_time)` to process incoming actions.

2223:static double game_time = 0.0;
2554:    Uint64 current_time = SDL_GetPerformanceCounter();
2555:    double dt = (double)(current_time - last_time) / (double)perf_freq;
2556:    last_time = current_time;
2705:        game_time += PHYSICS_RATE;

[Showing results with pagination = limit: 20, offset: 0]

Good, there's a `game_time` variable. Now let me add the sequence system. I'll:

1. Add the Sequence struct after the Chord struct (around line 820)
2. Add sequence functions (find, is_down, is_pressed, is_released, update, on_action_pressed)
3. Update the unified input functions to check sequences
4. Add a sequences_update call in the main loop
5. Add the Lua binding for input_bind_sequence

Let me write the code:

818→
   819→static Chord chords[MAX_CHORDS];
   820→static int chord_count = 0;
   821→
   822→// Find or create an action by name

Now let me add the Sequence struct and global variables after the Chord stuff:

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   815→    int action_count;
   816→    bool was_down;  // For edge detection
   817→} Chord;
   818→
   819→static Chord chords[MAX_CHORDS];
   820→static int chord_count = 0;
   821→
   822→// Sequence: series of actions that must be pressed in order within time windows
   823→#define MAX_SEQUENCE_STEPS 8
   824→#define MAX_SEQUENCES 32
   825→
   826→typedef struct {
   827→    char name[MAX_ACTION_NAME];
   828→    char action_names[MAX_SEQUENCE_STEPS][MAX_ACTION_NAME];
   829→    float delays[MAX_SEQUENCE_STEPS];  // Time window after each step (delay[i] = time allowed after step i)
   830→    int step_count;
   831→    int current_step;       // Which step we're waiting for (0 = first action)
   832→    float last_press_time;  // When last step was completed
   833→    bool just_fired;        // True for one frame when sequence completes
   834→    bool was_fired;         // For is_released edge detection
   835→} Sequence;
   836→
   837→static Sequence sequences[MAX_SEQUENCES];
   838→static int sequence_count = 0;
   839→
   840→// Find or create an action by name
   841→static Action* action_get_or_create(const char* name) {
   842→    // Find existing
   843→    for (int i = 0; i < action_count; i++) {
... [1 more lines]

Good, now I need to add the sequence functions. Let me find where `input_bind_chord_internal` ends and add the sequence functions after it, but before the unified input functions.

1135→    chord->was_down = false;
  1136→
  1137→    for (int i = 0; i < count; i++) {
  1138→        strncpy(chord->action_names[i], action_names[i], MAX_ACTION_NAME - 1);
  1139→        chord->action_names[i][MAX_ACTION_NAME - 1] = '\0';
  1140→    }
  1141→
  1142→    return true;
  1143→}
  1144→
  1145→// Unified query functions that check both actions and chords
  1146→static bool input_is_down(const char* name) {
  1147→    // Check actions first
  1148→    if (action_is_down(name)) return true;
  1149→    // Check chords
  1150→    Chord* chord = chord_find(name);
  1151→    if (chord) return chord_is_down(chord);
  1152→    return false;
  1153→}
  1154→
  1155→static bool input_is_pressed(const char* name) {
  1156→    // Check actions first
  1157→    if (action_is_pressed(name)) return true;
  1158→    // Check chords
  1159→    Chord* chord = chord_find(name);
  1160→    if (chord) return chord_is_pressed(chord);
  1161→    return false;
  1162→}
  1163→
  1164→static bool input_is_released(const char* name) {

Now I'll add the sequence functions between `input_bind_chord_internal` and the unified input functions.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1138→        strncpy(chord->action_names[i], action_names[i], MAX_ACTION_NAME - 1);
  1139→        chord->action_names[i][MAX_ACTION_NAME - 1] = '\0';
  1140→    }
  1141→
  1142→    return true;
  1143→}
  1144→
  1145→// Sequence functions
  1146→static Sequence* sequence_find(const char* name) {
  1147→    for (int i = 0; i < sequence_count; i++) {
  1148→        if (strcmp(sequences[i].name, name) == 0) {
  1149→            return &sequences[i];
  1150→        }
  1151→    }
  1152→    return NULL;
  1153→}
  1154→
  1155→// Sequences are momentary - is_down returns true only the frame it fires
  1156→static bool sequence_is_down(Sequence* seq) {
  1157→    return seq && seq->just_fired;
  1158→}
  1159→
  1160→static bool sequence_is_pressed(Sequence* seq) {
  1161→    return seq && seq->just_fired;
  1162→}
  1163→
  1164→static bool sequence_is_released(Sequence* seq) {
  1165→    return seq && seq->was_fired && !seq->just_fired;
  1166→}
... [117 more lines]

Good. Now I need to update the other two unified functions (input_is_pressed and input_is_released) to also check sequences. Let me read around line 1281 to see them.

1280→
  1281→static bool input_is_pressed(const char* name) {
  1282→    // Check actions first
  1283→    if (action_is_pressed(name)) return true;
  1284→    // Check chords
  1285→    Chord* chord = chord_find(name);
  1286→    if (chord) return chord_is_pressed(chord);
  1287→    return false;
  1288→}
  1289→
  1290→static bool input_is_released(const char* name) {
  1291→    // Check actions first
  1292→    if (action_is_released(name)) return true;
  1293→    // Check chords
  1294→    Chord* chord = chord_find(name);
  1295→    if (chord) return chord_is_released(chord);
  1296→    return false;
  1297→}
  1298→
  1299→// Unbind a specific control from an action
  1300→static bool input_unbind_control(const char* action_name, const char* control_str) {
  1301→    Action* action = action_find(action_name);
  1302→    if (!action) return false;
  1303→
  1304→    Control ctrl;

I need to update both input_is_pressed and input_is_released to check sequences.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1277→    if (seq) return sequence_is_down(seq);
  1278→    return false;
  1279→}
  1280→
  1281→static bool input_is_pressed(const char* name) {
  1282→    // Check actions first
  1283→    if (action_is_pressed(name)) return true;
  1284→    // Check chords
  1285→    Chord* chord = chord_find(name);
  1286→    if (chord) return chord_is_pressed(chord);
  1287→    // Check sequences
  1288→    Sequence* seq = sequence_find(name);
  1289→    if (seq) return sequence_is_pressed(seq);
  1290→    return false;
  1291→}
  1292→
  1293→static bool input_is_released(const char* name) {
  1294→    // Check actions first
  1295→    if (action_is_released(name)) return true;
  1296→    // Check chords
  1297→    Chord* chord = chord_find(name);
  1298→    if (chord) return chord_is_released(chord);
  1299→    // Check sequences
  1300→    Sequence* seq = sequence_find(name);
  1301→    if (seq) return sequence_is_released(seq);
  1302→    return false;
  1303→}
  1304→
  1305→// Unbind a specific control from an action
... [2 more lines]

Good. Now I need to:

1. Call `sequences_update(game_time)` at the start of each physics frame (or at start of frame before input processing)
2. Call `sequences_on_action_pressed(action_name, game_time)` whenever an action is pressed

For #1, I need to find where the main loop updates and add the call.
For #2, I need to hook into the action system - when an action transitions to pressed, we notify the sequence system.

Let me first find where chords_post_update is called so I know where to add sequences_update.

1100-    bool down_now = chord_is_down(chord);
1101-    return !down_now && chord->was_down;
1102-}
1103-
1104-// Update chord edge detection state (call at end of frame)
1105:static void chords_post_update(void) {
1106-    for (int i = 0; i < chord_count; i++) {
1107-        chords[i].was_down = chord_is_down(&chords[i]);
1108-    }
1109-}
1110-
--
2855-        game_time += PHYSICS_RATE;
2856-        physics_lag -= PHYSICS_RATE;
2857-
2858-        // Copy current input state to previous for next frame's edge detection
2859-        input_post_update();
2860:        chords_post_update();
2861-    }
2862-
2863-    // Render at 60Hz (for chunky pixel movement on high-refresh monitors)
2864-    if (render_lag >= RENDER_RATE) {
2865-        render_lag -= RENDER_RATE;

Good, `chords_post_update()` is called at line 2860 after `input_post_update()`. I need to add:
1. `sequences_update(game_time)` at the START of the frame (before checking is_pressed)
2. Track when actions are pressed and call `sequences_on_action_pressed`

Actually, looking at this more carefully:
- `sequences_update` should be called at the start of each physics frame to clear `just_fired` and check timeouts
- `sequences_on_action_pressed` needs to be called when we detect that an action was just pressed

The challenge is: when do we call `sequences_on_action_pressed`? We need to detect when an action transitions to "pressed" state. 

Looking at how actions work:
- `action_is_pressed` checks if the action is down now and wasn't down in the previous frame
- This is computed on-demand each time is_pressed is called

So I have a few options:
1. Call `sequences_on_action_pressed` for every action that `action_is_pressed` returns true for (but this would require iterating all actions)
2. Hook into the point where we detect key/mouse presses in the event loop
3. Create a helper that checks all pressed actions at the start of the physics frame

Option 3 seems cleanest. I'll add a function that iterates through all actions, checks if each one was just pressed, and notifies the sequence system.

Let me add this:

2845→                    error_state = true;
  2846→                } else {
  2847→                    lua_pop(L, 1);  // traceback
  2848→                }
  2849→            } else {
  2850→                lua_pop(L, 2);  // nil + traceback
  2851→            }
  2852→        }
  2853→
  2854→        step++;
  2855→        game_time += PHYSICS_RATE;
  2856→        physics_lag -= PHYSICS_RATE;
  2857→
  2858→        // Copy current input state to previous for next frame's edge detection
  2859→        input_post_update();
  2860→        chords_post_update();
  2861→    }
  2862→
  2863→    // Render at 60Hz (for chunky pixel movement on high-refresh monitors)
  2864→    if (render_lag >= RENDER_RATE) {
  2865→        render_lag -= RENDER_RATE;
  2866→        frame++;
  2867→
  2868→        // Set up orthographic projection (game coordinates)
  2869→        // Maps (0,0) at top-left to (width, height) at bottom-right
  2870→        float projection[16] = {
  2871→            2.0f / GAME_WIDTH, 0.0f, 0.0f, 0.0f,
  2872→            0.0f, -2.0f / GAME_HEIGHT, 0.0f, 0.0f,
  2873→            0.0f, 0.0f, -1.0f, 0.0f,
  2874→            -1.0f, 1.0f, 0.0f, 1.0f

I need to add two things:
1. A function that notifies sequences when actions are pressed - I'll iterate through all actions and check which ones are pressed
2. Call `sequences_update` and the action-pressed notification at the right time in the main loop

The sequence needs to be notified BEFORE the pressed state is cleared. Looking at the loop order:
1. Physics loop runs, calls lua update
2. After physics: `input_post_update()` copies current to previous (clearing edge detection)
3. After that: `chords_post_update()`

So I should:
1. At the START of the physics iteration (BEFORE lua update), call sequences_update to clear just_fired from previous frame
2. At the START, also check which actions are newly pressed and notify sequencesActually, looking more carefully at the timing:
- `action_is_pressed` returns true when current && !previous
- After `input_post_update`, previous = current, so is_pressed would return false

So the sequence of events should be:1. Check which actions are pressed (before they're cleared)
2. Notify sequences of those pressed actions
3. Update lua4. input_post_update (clears edge detection)5. chords_post_update

But wait, I also need to clear `just_fired` at some point. The flow should be:

Frame N:
1. sequences_update clears just_fired from Frame N-1, checks timeouts
2. Check which actions are pressed, notify sequences (may set just_fired)
3. lua update runs, can check is_pressed('sequence_name') and get true
4. input_post_update
5. chords_post_update

Frame N+1:
1. sequences_update clears just_fired, so sequence isn't pressed anymore
...

That looks right. Let me add a helper function that checks all actions for pressed state and notifies sequences.

1260→
  1261→    for (int i = 0; i < step_count - 1; i++) {
  1262→        seq->delays[i] = delays[i];
  1263→    }
  1264→
  1265→    return true;
  1266→}
  1267→
  1268→// Unified query functions that check actions, chords, and sequences
  1269→static bool input_is_down(const char* name) {
  1270→    // Check actions first
  1271→    if (action_is_down(name)) return true;
  1272→    // Check chords
  1273→    Chord* chord = chord_find(name);
  1274→    if (chord) return chord_is_down(chord);

I'll add a helper function after input_bind_sequence_internal that iterates all actions to find pressed ones and notify sequences. Then I'll call it in the main loop.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1257→        strncpy(seq->action_names[i], action_names[i], MAX_ACTION_NAME - 1);
  1258→        seq->action_names[i][MAX_ACTION_NAME - 1] = '\0';
  1259→    }
  1260→
  1261→    for (int i = 0; i < step_count - 1; i++) {
  1262→        seq->delays[i] = delays[i];
  1263→    }
  1264→
  1265→    return true;
  1266→}
  1267→
  1268→// Check all actions for pressed state and notify sequences
  1269→static void sequences_check_actions(float current_time) {
  1270→    for (int i = 0; i < action_count; i++) {
  1271→        if (action_is_pressed(actions[i].name)) {
  1272→            sequences_on_action_pressed(actions[i].name, current_time);
  1273→        }
  1274→    }
  1275→}
  1276→
  1277→// Unified query functions that check actions, chords, and sequences
  1278→static bool input_is_down(const char* name) {
  1279→    // Check actions first
  1280→    if (action_is_down(name)) return true;
  1281→    // Check chords

Good. Now I need to call these functions in the main loop. Let me find the physics loop start and add the calls there.

2829-            }
2830-        }
2831-    }
2832-
2833-    // Update gamepad state (poll axes and buttons)
2834-    gamepad_update();
2835-
2836-    // Fixed timestep physics/input loop (120Hz)
2837:    while (physics_lag >= PHYSICS_RATE) {
2838-        // Clear commands on all layers at start of update
2839-        for (int i = 0; i < layer_count; i++) {
2840-            layer_clear_commands(layer_registry[i]);
2841-        }
2842-
2843-        // Call Lua update (skip if in error state)
2844-        if (!error_state) {
2845-            lua_pushcfunction(L, traceback);

I see the physics loop starts at line 2837. I need to add the sequence update calls after clearing commands and before calling Lua update. Let me insert them there.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2832→
  2833→    // Update gamepad state (poll axes and buttons)
  2834→    gamepad_update();
  2835→
  2836→    // Fixed timestep physics/input loop (120Hz)
  2837→    while (physics_lag >= PHYSICS_RATE) {
  2838→        // Clear commands on all layers at start of update
  2839→        for (int i = 0; i < layer_count; i++) {
  2840→            layer_clear_commands(layer_registry[i]);
  2841→        }
  2842→
  2843→        // Update sequences (clear just_fired from last frame, check timeouts)
  2844→        sequences_update((float)game_time);
  2845→
  2846→        // Check which actions were pressed and notify sequences
  2847→        sequences_check_actions((float)game_time);
  2848→
  2849→        // Call Lua update (skip if in error state)
  2850→        if (!error_state) {
  2851→            lua_pushcfunction(L, traceback);
  2852→            int err_handler = lua_gettop(L);
  2853→            lua_getglobal(L, "update");

Good. Now I need to add the Lua binding for `input_bind_sequence`. Let me find where `l_input_bind_chord` is defined.

2228-}
2229-
2230-// input_bind_chord(name, {action1, action2, ...})
2231:static int l_input_bind_chord(lua_State* L) {
2232-    const char* name = luaL_checkstring(L, 1);
2233-    luaL_checktype(L, 2, LUA_TTABLE);
2234-

Let me read the full l_input_bind_chord to see the pattern, then add l_input_bind_sequence after it.

2228→}
  2229→
  2230→// input_bind_chord(name, {action1, action2, ...})
  2231→static int l_input_bind_chord(lua_State* L) {
  2232→    const char* name = luaL_checkstring(L, 1);
  2233→    luaL_checktype(L, 2, LUA_TTABLE);
  2234→
  2235→    const char* action_names[MAX_ACTIONS_PER_CHORD];
  2236→    int count = 0;
  2237→
  2238→    lua_pushnil(L);
  2239→    while (lua_next(L, 2) != 0 && count < MAX_ACTIONS_PER_CHORD) {
  2240→        if (lua_isstring(L, -1)) {
  2241→            action_names[count++] = lua_tostring(L, -1);
  2242→        }
  2243→        lua_pop(L, 1);
  2244→    }
  2245→
  2246→    lua_pushboolean(L, input_bind_chord_internal(name, action_names, count));
  2247→    return 1;
  2248→}
  2249→
  2250→static int l_input_unbind(lua_State* L) {
  2251→    const char* action = luaL_checkstring(L, 1);
  2252→    const char* control = luaL_checkstring(L, 2);
  2253→    lua_pushboolean(L, input_unbind_control(action, control));
  2254→    return 1;
  2255→}
  2256→
  2257→static int l_input_unbind_all(lua_State* L) {

Now I need to add `l_input_bind_sequence` after `l_input_bind_chord`. The format should parse a table like `{'right', 0.2, 'right'}` where strings are actions and numbers are delays.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2242→        }
  2243→        lua_pop(L, 1);
  2244→    }
  2245→
  2246→    lua_pushboolean(L, input_bind_chord_internal(name, action_names, count));
  2247→    return 1;
  2248→}
  2249→
  2250→// input_bind_sequence(name, {action1, delay1, action2, delay2, action3, ...})
  2251→// Table alternates: string action, number delay, string action, number delay, string action
  2252→static int l_input_bind_sequence(lua_State* L) {
  2253→    const char* name = luaL_checkstring(L, 1);
  2254→    luaL_checktype(L, 2, LUA_TTABLE);
  2255→
  2256→    const char* action_names[MAX_SEQUENCE_STEPS];
  2257→    float delays[MAX_SEQUENCE_STEPS];
  2258→    int action_count = 0;
  2259→    int delay_count = 0;
  2260→
  2261→    // Iterate through the table by index (array order matters)
  2262→    int len = (int)lua_rawlen(L, 2);
  2263→    for (int i = 1; i <= len && action_count < MAX_SEQUENCE_STEPS; i++) {
  2264→        lua_rawgeti(L, 2, i);
  2265→        if (lua_isstring(L, -1)) {
  2266→            action_names[action_count++] = lua_tostring(L, -1);
  2267→        }
  2268→        else if (lua_isnumber(L, -1) && delay_count < MAX_SEQUENCE_STEPS - 1) {
  2269→            delays[delay_count++] = (float)lua_tonumber(L, -1);
  2270→        }
... [20 more lines]

Good. Now I need to register `input_bind_sequence` in the Lua bindings. Let me find where `input_bind_chord` is registered.

2393-    lua_register(L, "mouse_wheel", l_mouse_wheel);
2394-    // Input - Action binding
2395-    lua_register(L, "input_bind", l_input_bind);
2396:    lua_register(L, "input_bind_chord", l_input_bind_chord);
2397-    lua_register(L, "input_unbind", l_input_unbind);
2398-    lua_register(L, "input_unbind_all", l_input_unbind_all);
2399-    lua_register(L, "input_bind_all", l_input_bind_all);

Perfect, I'll add the input_bind_sequence registration right after input_bind_chord.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2391→    lua_register(L, "mouse_is_pressed", l_mouse_is_pressed);
  2392→    lua_register(L, "mouse_is_released", l_mouse_is_released);
  2393→    lua_register(L, "mouse_wheel", l_mouse_wheel);
  2394→    // Input - Action binding
  2395→    lua_register(L, "input_bind", l_input_bind);
  2396→    lua_register(L, "input_bind_chord", l_input_bind_chord);
  2397→    lua_register(L, "input_bind_sequence", l_input_bind_sequence);
  2398→    lua_register(L, "input_unbind", l_input_unbind);
  2399→    lua_register(L, "input_unbind_all", l_input_unbind_all);
  2400→    lua_register(L, "input_bind_all", l_input_bind_all);
  2401→    lua_register(L, "input_get_axis", l_input_get_axis);
  2402→    lua_register(L, "input_get_vector", l_input_get_vector);

Good. Now let me build the engine to check for errors.

anchor.c

src/anchor.c(602): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(596): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data

src/anchor.c(854): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1132): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1138): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1248): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1257): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1859): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Build successful. Now I need to update the test file to test sequences. Let me add a sequence test - a double-tap dash would be a good example.

1→print("main.lua loaded - Input Test (Step 7: Chords)")
     2→
     3→set_shape_filter("rough")
     4→
     5→local screen_w, screen_h = 480, 270
     6→
     7→-- Use input_bind_all to create default bindings for all keys/mouse buttons
     8→input_bind_all()
     9→print("input_bind_all() called - all keys now have actions")
    10→
    11→-- Set up chord: Shift+Space triggers 'super_action'
    12→input_bind_chord('super_action', {'lshift', 'space'})
    13→print("Chord 'super_action' = Shift + Space")
    14→
    15→-- Set up custom action bindings (keyboard + mouse)
    16→input_bind('move_up', 'key:w')
    17→input_bind('move_up', 'key:up')
    18→input_bind('move_down', 'key:s')
    19→input_bind('move_down', 'key:down')
    20→input_bind('move_left', 'key:a')

Let me update the header and add a sequence binding. I'll add a double-tap 'd' (right) for a dash action.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→print("main.lua loaded - Input Test (Step 8: Sequences)")
     2→
     3→set_shape_filter("rough")
     4→
     5→local screen_w, screen_h = 480, 270
     6→
     7→-- Use input_bind_all to create default bindings for all keys/mouse buttons
     8→input_bind_all()
     9→print("input_bind_all() called - all keys now have actions")
    10→
    11→-- Set up chord: Shift+Space triggers 'super_action'
    12→input_bind_chord('super_action', {'lshift', 'space'})
    13→print("Chord 'super_action' = Shift + Space")
    14→
    15→-- Set up sequence: double-tap D triggers 'dash'
    16→-- Format: {action1, delay, action2} - press D, then D again within 0.3s
    17→input_bind_sequence('dash', {'d', 0.3, 'd'})
    18→print("Sequence 'dash' = D, D (within 0.3s)")
    19→
    20→-- Set up custom action bindings (keyboard + mouse)
    21→input_bind('move_up', 'key:w')
    22→input_bind('move_up', 'key:up')

Now I need to add the sequence test in the update function. Let me find the area where we test chords and add a sequence test after it.

191-    end
192-
193-    -- Check is_released
194-    if is_released('action') then
195-        print("ACTION RELEASED!")
196-    end
197-
198-    -- === Chord test: Shift+Space triggers 'super_action' ===
199:    if is_pressed('super_action') then
200-        pressed_flash = 0.5  -- Longer flash for chord
201-        print("SUPER ACTION PRESSED! (Shift + Space chord)")
202-    end
203-    if is_released('super_action') then
204-        print("SUPER ACTION RELEASED!")
205-    end
206-
207-    -- === Test unbind/rebind with U/R keys ===

Now let me add the sequence test after the chord test.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   194→    if is_released('action') then
   195→        print("ACTION RELEASED!")
   196→    end
   197→
   198→    -- === Chord test: Shift+Space triggers 'super_action' ===
   199→    if is_pressed('super_action') then
   200→        pressed_flash = 0.5  -- Longer flash for chord
   201→        print("SUPER ACTION PRESSED! (Shift + Space chord)")
   202→    end
   203→    if is_released('super_action') then
   204→        print("SUPER ACTION RELEASED!")
   205→    end
   206→
   207→    -- === Sequence test: double-tap D triggers 'dash' ===
   208→    if is_pressed('dash') then
   209→        pressed_flash = 0.5  -- Flash for sequence
   210→        print("DASH PRESSED! (D, D sequence)")
   211→    end
   212→    if is_released('dash') then
   213→        print("DASH RELEASED!")
   214→    end
   215→
   216→    -- === Test unbind/rebind with U/R keys ===
   217→    if is_pressed('u') then
   218→        input_unbind('action', 'mouse:1')
   219→        print("UNBIND: mouse:1 removed from 'action' - left click no longer triggers flash!")
   220→    end

The test is ready. Let me summarize what was implemented:1. **Sequence struct** with:
   - name
   - array of action names (MAX_SEQUENCE_STEPS = 8)
   - array of delays between actions
   - step_count (number of actions in sequence)
   - current_step (which action we're waiting for)
   - last_press_time (when the last step was pressed)
   - just_fired (true for one frame when sequence completes)
   - was_fired (for is_released edge detection)2. **Sequence functions**:
   - `sequence_find(name)` - find sequence by name
   - `sequence_is_down/pressed/released(seq)` - query sequence state
   - `sequences_on_action_pressed(action, time)` - called when an action is pressed, advances sequences
   - `sequences_update(time)` - called each frame to clear just_fired and check timeouts
   - `sequences_check_actions(time)` - checks all actions for pressed state and notifies sequences
   - `input_bind_sequence_internal(name, actions, delays, count)` - bind a new sequence

3. **Unified input functions** updated to check sequences after actions and chords4. **Main loop** updated to call `sequences_update` and `sequences_check_actions` at start of each physics frame

5. **Lua binding** `input_bind_sequence(name, {action1, delay1, action2, delay2, action3})`6. **Test** added double-tap D for 'dash'

The user can now test this by running the game and double-tapping D within 0.3 seconds.

The user is asking a good question. Looking at the implementation:

In `sequences_on_action_pressed`, I'm comparing `action_name` (which comes from the action system) with `seq->action_names[seq->current_step]`.

The `sequences_check_actions` function iterates through all actions and checks `action_is_pressed(actions[i].name)`, then calls `sequences_on_action_pressed(actions[i].name, ...)`.

So the action names being passed are the action names from the action system, like 'd', 'space', etc. (created by `input_bind_all`).

Looking at `input_bind_all`, it creates actions with names like 'a', 'b', 'c', 'd', etc. for keys, not 'key:d'.

So when I call `input_bind_sequence('dash', {'d', 0.3, 'd'})`, the 'd' refers to the action name 'd', which was created by `input_bind_all()`.

This is actually correct! The sequence system works with action names, not control strings. The 'd' action was created by `input_bind_all()` and is bound to 'key:d'.

So `{'d', 0.3, 'd'}` is correct because:
1. `input_bind_all()` creates an action named 'd' bound to 'key:d'
2. The sequence watches for the 'd' action to be pressed
3. When you press the D key, the 'd' action fires, which advances the sequence

The user might be confused because `input_bind` uses 'key:d' format, but that's for binding controls to actions. Sequences work with action names, not controls.

Let me explain this to the user.

Let me think about what could be wrong. The user says pressing D moves the ball right (which is expected since D is bound to move_right), but double-tapping D doesn't trigger the dash sequence.

Let me trace through the logic:

1. `input_bind_all()` creates an action 'd' bound to 'key:d'
2. `input_bind_sequence('dash', {'d', 0.3, 'd'})` creates a sequence watching for action 'd' twice

When D is pressed:
1. `sequences_update()` is called - clears just_fired, checks timeouts
2. `sequences_check_actions()` is called - iterates all actions, checks if pressed
3. For action 'd', if `action_is_pressed('d')` returns true, calls `sequences_on_action_pressed('d', game_time)`

Wait, there's a potential issue. Let me look at the order of operations in the main loop:

```c
// Update sequences (clear just_fired from last frame, check timeouts)
sequences_update((float)game_time);

// Check which actions were pressed and notify sequences
sequences_check_actions((float)game_time);

// Call Lua update (skip if in error state)
```

So sequences_update clears just_fired BEFORE we check for new presses. That seems right.

Then sequences_check_actions checks which actions are pressed and notifies sequences.

Let me look at sequences_on_action_pressed more carefully:

```c
static void sequences_on_action_pressed(const char* action_name, float current_time) {
    for (int i = 0; i < sequence_count; i++) {
        Sequence* seq = &sequences[i];
        if (seq->step_count == 0) continue;

        // Check if this action matches what we're waiting for
        if (strcmp(action_name, seq->action_names[seq->current_step]) == 0) {


```

On the first step, the sequence accepts the action and advances to step 1. For subsequent steps, it checks if the elapsed time since the last press is within the allowed delay window. If so, it advances the step and updates the last press time. When the sequence completes (all steps matched), it should trigger the dash action.

If the elapsed time exceeds the delay window, the sequence resets. However, if the current action matches the first action in the sequence, it restarts the sequence from step 1. This allows the player to begin a new sequence attempt after a timeout.

There's likely an issue with how `action_is_pressed` determines whether an action was pressed in the current frame versus being held from a previous frame. frame. But at 120Hz physics, a single key press might only register as "pressed" for one physics frame.

Actually, that should be fine - when you press D the first time, action_is_pressed('d') returns true for that frame, and we advance current_step to 1. Then when you press D the second time (within 0.3s), action_is_pressed('d') returns true again, and we should advance to step 2 (which equals step_count), triggering the sequence.

Wait, let me check if there's an issue with the order. Looking at the main loop:

```c
while (physics_lag >= PHYSICS_RATE) {
    // Clear commands on all layers at start of update
    for (int i = 0; i < layer_count; i++) {
        layer_clear_commands(layer_registry[i]);
    }

    // Update sequences (clear just_fired from last frame, check timeouts)
    sequences_update((float)game_time);

    // Check which actions were pressed and notify sequences
    sequences_check_actions((float)game_time);

    // Call Lua update (skip if in error state)
    ...

    // Copy current input state to previous for next frame's edge detection
    input_post_update();
    chords_post_update();
}
```

I think I found the issue - sequences_check_actions runs every physics iteration in the while loop. If physics_lag is large at startup or after a pause, the loop executes multiple times with the same input state. On the first iteration, D being pressed advances the sequence to step 1. On subsequent iterations within that same loop, D is still pressed, so it advances again to step 2, firing the sequence immediately instead of waiting for the second key press. previous, so D released is now reflected in action_is_pressed.

After many frames pass, when the second D press happens within the 0.3s window, sequences_update checks if the elapsed time exceeds the delay threshold. If it does, it resets current_step back to 0, which would break the sequence detection.

However, if we're still within the 0.3s window, current_step remains at 1. Then sequences_check_actions sees the D press and should advance to step 2, triggering the action.

The potential issue might be in how sequences_check_actions iterates through the actions and checks for the button press. Let me examine the loop logic more carefully to see if there's a condition preventing the sequence from advancing properly when the second input arrives. 1);
    luaL_checktype(L, 2, LUA_TTABLE);

    const char* action_names[MAX_SEQUENCE_STEPS];
    float delays[MAX_SEQUENCE_STEPS];
    int action_count = 0;
    int delay_count = 0;

    // Iterate through the table by index (array order matters)
    int len = (int)lua_rawlen(L, 2);
    for (int i = 1; i <= len && action_count < MAX_SEQUENCE_STEPS; i++) {
        lua_rawgeti(L, 2, i);
        if (lua_isstring(L, -1)) {
            action_names[action_count++] = lua_tostring(L, -1);
        }
        else if (lua_isnumber(L, -1)) {
            delays[delay_count++] = (float)lua_tonumber(L, -1);
        }
        lua_pop(L, 1);
    }

The binding function extracts action names and delay values from the Lua table in order, storing them separately. This preserves the sequence structure where actions and their timing intervals are interleaved in the original table. I'm noticing a memory safety issue with the string handling. When I call `lua_tostring(L, -1)` and store the pointer in `action_names`, that pointer becomes invalid after `lua_pop(L, 1)` removes the value from the stack. However, looking at `input_bind_sequence_internal`, it does perform `strncpy` to copy the strings into the sequence structure, so the data should be preserved before the pointers dangle. The strings get copied into `seq->action_names[i]` with proper null termination, which means the values are safe by the time the function returns.

Wait—the real problem is that all the strings are popped from the stack before `input_bind_sequence_internal` is even called, so those pointers are already garbage when the copy happens. I need to either copy the strings immediately after retrieving them from Lua, or keep them on the stack until after the internal function processes them. Looking at how I handled this for chords, I should follow that same pattern to ensure the strings remain valid throughout the operation. Lua strings are interned, so the pointers should remain valid as long as the strings exist in the table being iterated over—they won't be garbage collected while still referenced. This is risky design though, since the documentation doesn't guarantee pointer validity after popping from the stack.

Looking at the sequences code, there's a potential issue with `sequences_check_actions` using the global `action_count` when iterating through actions. The function references `actions[i].name` but there's also a local variable that might be shadowing or conflicting with the intended scope.

I should add debug output to trace execution. Printing when sequences are bound and when `sequences_on_action_pressed` is called would help identify whether the sequence is being registered correctly or if the action detection is failing.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1164→static bool sequence_is_released(Sequence* seq) {
  1165→    return seq && seq->was_fired && !seq->just_fired;
  1166→}
  1167→
  1168→// Check if an action press advances any sequence (called when any action is pressed)
  1169→static void sequences_on_action_pressed(const char* action_name, float current_time) {
  1170→    for (int i = 0; i < sequence_count; i++) {
  1171→        Sequence* seq = &sequences[i];
  1172→        if (seq->step_count == 0) continue;
  1173→
  1174→        // Check if this action matches what we're waiting for
  1175→        printf("SEQ DEBUG: action='%s', seq='%s', waiting_for='%s', current_step=%d\n",
  1176→               action_name, seq->name, seq->action_names[seq->current_step], seq->current_step);
  1177→
  1178→        if (strcmp(action_name, seq->action_names[seq->current_step]) == 0) {
  1179→            if (seq->current_step == 0) {
  1180→                // First step - always accept, start the sequence
  1181→                seq->current_step = 1;
  1182→                seq->last_press_time = current_time;
  1183→                printf("SEQ DEBUG: Started sequence '%s', now at step 1\n", seq->name);
  1184→            }
  1185→            else {
  1186→                // Check if we're within the time window
  1187→                float elapsed = current_time - seq->last_press_time;
  1188→                printf("SEQ DEBUG: elapsed=%.3f, max_delay=%.3f\n", elapsed, seq->delays[seq->current_step - 1]);
  1189→                if (elapsed <= seq->delays[seq->current_step - 1]) {
  1190→                    // Within time window - advance
  1191→                    seq->current_step++;
  1192→                    seq->last_press_time = current_time;
... [27 more lines]

Let me also add a debug print when the sequence is bound to verify it's being set up correctly.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1266→        strncpy(seq->action_names[i], action_names[i], MAX_ACTION_NAME - 1);
  1267→        seq->action_names[i][MAX_ACTION_NAME - 1] = '\0';
  1268→    }
  1269→
  1270→    for (int i = 0; i < step_count - 1; i++) {
  1271→        seq->delays[i] = delays[i];
  1272→    }
  1273→
  1274→    printf("SEQ BIND: Created sequence '%s' with %d steps: ", name, step_count);
  1275→    for (int i = 0; i < step_count; i++) {
  1276→        printf("'%s'", seq->action_names[i]);
  1277→        if (i < step_count - 1) printf(" --(%.2fs)--> ", seq->delays[i]);
  1278→    }
  1279→    printf("\n");
  1280→
  1281→    return true;
  1282→}
  1283→
  1284→// Check all actions for pressed state and notify sequences
  1285→static void sequences_check_actions(float current_time) {
  1286→    for (int i = 0; i < action_count; i++) {
  1287→        if (action_is_pressed(actions[i].name)) {
  1288→            sequences_on_action_pressed(actions[i].name, current_time);

Now let me build and have the user test. The debug output will tell us:
1. If the sequence is being created properly
2. If the action is being detected when D is pressed
3. What step the sequence is at
4. If it's timing out or advancing

anchor.c

src/anchor.c(602): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(596): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data

src/anchor.c(854): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1132): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1138): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1257): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1266): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1875): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Good, it built. Now the user should run it and we'll see what the debug output tells us about what's happening with the sequence.

The warning message tells me the sequence binding is failing validation. Let me look at the validation code:

```c
// Validate: should have alternating action, delay, action, delay, action...
// So action_count should be delay_count + 1
if (action_count < 2 || action_count != delay_count + 1) {
    printf("Warning: Sequence format should be {action, delay, action, delay, action, ...}\n");
    lua_pushboolean(L, false);
    return 1;
}
```

So the sequence isn't being created because the validation failed. The input is `{'d', 0.3, 'd'}` which should have:
- action_count = 2 ('d', 'd')
- delay_count = 1 (0.3)

And 2 == 1 + 1 is true, so that should pass. But it's not passing...

Let me look at the parsing loop again:

```c
int len = (int)lua_rawlen(L, 2);
for (int i = 1; i <= len && action_count < MAX_SEQUENCE_STEPS; i++) {
    lua_rawgeti(L, 2, i);
    if (lua_isstring(L, -1)) {
        action_names[action_count++] = lua_tostring(L, -1);
    }
    else if (lua_isnumber(L, -1) && delay_count < MAX_SEQUENCE_STEPS - 1) {
        delays[delay_count++] = (float)lua_tonumber(L, -1);
    }
    lua_pop(L, 1);
}
```

Oh! I think I see the issue. In Lua, `0.3` might be considered both a number AND possibly something else? Let me check...

Actually, wait. In Lua, numbers are numbers. 

Here is the next thinking you need to rewrite: But hold on - what if lua_rawlen is returning 0? That would happen if the table isn't an array (sequence) but a hash table...

Actually no, `{'d', 0.3, 'd'}` is definitely an array in Lua.

Let me think... what if lua_isstring is matching 0.3 somehow? No, that doesn't make sense.

Wait, let me check the loop condition: `action_count < MAX_SEQUENCE_STEPS`. MAX_SEQUENCE_STEPS is 8. So that's fine.

Hmm, let me add more debug output to see what's being parsed.

Actually, I wonder if the issue is that the strings might not be getting parsed correctly. Maybe I need to trace through what's actually being stored in the action_names and delays arrays to see if the counts are even accurate.

Let me add some debug logging to track what values are being extracted from the Lua table at each step.

Actually, I should check if there's an issue with how the strings are being handled - perhaps they're getting corrupted or the pointers are becoming invalid after the Lua operations.

Let me instrument the code to print out exactly what's being read from the table.

Actually, I wonder if the issue is that the strings returned by lua_tostring become invalid after lua_pop. Let me check what's actually being stored...

Actually, the issue might be simpler. Let me add debug output to the Lua binding to see what's being parsed.

The strings from lua_tostring could be getting invalidated after popping from the stack, which would explain why the data appears corrupted. I should add logging throughout the parsing process to track the actual values being extracted and stored in the arrays.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2262→    lua_pushboolean(L, input_bind_chord_internal(name, action_names, count));
  2263→    return 1;
  2264→}
  2265→
  2266→// input_bind_sequence(name, {action1, delay1, action2, delay2, action3, ...})
  2267→// Table alternates: string action, number delay, string action, number delay, string action
  2268→static int l_input_bind_sequence(lua_State* L) {
  2269→    const char* name = luaL_checkstring(L, 1);
  2270→    luaL_checktype(L, 2, LUA_TTABLE);
  2271→
  2272→    const char* action_names[MAX_SEQUENCE_STEPS];
  2273→    float delays[MAX_SEQUENCE_STEPS];
  2274→    int action_count = 0;
  2275→    int delay_count = 0;
  2276→
  2277→    // Iterate through the table by index (array order matters)
  2278→    int len = (int)lua_rawlen(L, 2);
  2279→    printf("SEQ PARSE: table len=%d\n", len);
  2280→    for (int i = 1; i <= len && action_count < MAX_SEQUENCE_STEPS; i++) {
  2281→        lua_rawgeti(L, 2, i);
  2282→        int t = lua_type(L, -1);
  2283→        printf("SEQ PARSE: index %d, type=%d (%s)\n", i, t, lua_typename(L, t));
  2284→        if (lua_isstring(L, -1)) {
  2285→            action_names[action_count++] = lua_tostring(L, -1);
  2286→            printf("SEQ PARSE:   -> string '%s'\n", action_names[action_count-1]);
  2287→        }
  2288→        else if (lua_isnumber(L, -1) && delay_count < MAX_SEQUENCE_STEPS - 1) {
  2289→            delays[delay_count++] = (float)lua_tonumber(L, -1);
  2290→            printf("SEQ PARSE:   -> number %.3f\n", delays[delay_count-1]);
... [21 more lines]

Good, added more debug output. Let me build and have the user test again.

anchor.c

src/anchor.c(602): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(596): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data

src/anchor.c(854): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1132): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1138): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1257): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1266): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1875): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Good, built. Now when the user runs it, we should see more detail about why the parsing is failing.

I see the problem. The number (type=3) is being detected correctly, but then it's printing `-> string '0.3'` which means lua_isstring is returning true for the number!

In Lua, `lua_isstring` returns true for both strings AND numbers because numbers can be converted to strings. From the Lua manual: "lua_isstring returns 1 if the value at the given index is a string or a number (which is always convertible to a string)".

So the check order is wrong - I check `lua_isstring` first, which matches numbers too. I need to check `lua_isnumber` first, or use `lua_type` to check the exact type.

Let me fix this by checking the actual type instead of using lua_isstring/lua_isnumber.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2273→    float delays[MAX_SEQUENCE_STEPS];
  2274→    int action_count = 0;
  2275→    int delay_count = 0;
  2276→
  2277→    // Iterate through the table by index (array order matters)
  2278→    int len = (int)lua_rawlen(L, 2);
  2279→    for (int i = 1; i <= len && action_count < MAX_SEQUENCE_STEPS; i++) {
  2280→        lua_rawgeti(L, 2, i);
  2281→        int t = lua_type(L, -1);
  2282→        // Must check type exactly - lua_isstring returns true for numbers too!
  2283→        if (t == LUA_TSTRING) {
  2284→            action_names[action_count++] = lua_tostring(L, -1);
  2285→        }
  2286→        else if (t == LUA_TNUMBER && delay_count < MAX_SEQUENCE_STEPS - 1) {
  2287→            delays[delay_count++] = (float)lua_tonumber(L, -1);
  2288→        }
  2289→        lua_pop(L, 1);
  2290→    }
  2291→
  2292→    printf("SEQ PARSE: action_count=%d, delay_count=%d\n", action_count, delay_count);
  2293→
  2294→    // Validate: should have alternating action, delay, action, delay, action...

Good, fixed the type checking. Now let me also remove the debug output from the sequence functions since we found and fixed the bug, but I'll leave a minimal print for when the sequence is bound to confirm it works, and maybe one when it fires. Actually, let me just build it with the remaining debug output and see if it works first, then we can clean up.

anchor.c

src/anchor.c(602): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(596): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data

src/anchor.c(854): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1132): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1138): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1257): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1266): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1875): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Good, it built. Now the user should test it and we should see the sequence being created properly and hopefully firing when D is double-tapped.

The sequence system is working. Now I should remove the debug output and clean up the code. I can see from the output that:

1. The sequence is being created properly
2. When D is pressed, it starts the sequence (step 0 -> step 1)
3. When D is pressed again within 0.3s, it fires the sequence
4. The Lua side detects the press and release correctly

Now I need to clean up by removing all the debug printf statements.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1164→static bool sequence_is_released(Sequence* seq) {
  1165→    return seq && seq->was_fired && !seq->just_fired;
  1166→}
  1167→
  1168→// Check if an action press advances any sequence (called when any action is pressed)
  1169→static void sequences_on_action_pressed(const char* action_name, float current_time) {
  1170→    for (int i = 0; i < sequence_count; i++) {
  1171→        Sequence* seq = &sequences[i];
  1172→        if (seq->step_count == 0) continue;
  1173→
  1174→        // Check if this action matches what we're waiting for
  1175→        if (strcmp(action_name, seq->action_names[seq->current_step]) == 0) {
  1176→            if (seq->current_step == 0) {
  1177→                // First step - always accept, start the sequence
  1178→                seq->current_step = 1;
  1179→                seq->last_press_time = current_time;
  1180→            }
  1181→            else {
  1182→                // Check if we're within the time window
  1183→                float elapsed = current_time - seq->last_press_time;
  1184→                if (elapsed <= seq->delays[seq->current_step - 1]) {
  1185→                    // Within time window - advance
  1186→                    seq->current_step++;
  1187→                    seq->last_press_time = current_time;
  1188→
  1189→                    // Check if sequence completed
  1190→                    if (seq->current_step >= seq->step_count) {
  1191→                        seq->just_fired = true;
  1192→                        seq->current_step = 0;  // Reset for next time
... [18 more lines]

Good. Now let me remove the other debug prints - the SEQ BIND print and the SEQ PARSE print.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1257→        strncpy(seq->action_names[i], action_names[i], MAX_ACTION_NAME - 1);
  1258→        seq->action_names[i][MAX_ACTION_NAME - 1] = '\0';
  1259→    }
  1260→
  1261→    for (int i = 0; i < step_count - 1; i++) {
  1262→        seq->delays[i] = delays[i];
  1263→    }
  1264→
  1265→    return true;
  1266→}
  1267→
  1268→// Check all actions for pressed state and notify sequences
  1269→static void sequences_check_actions(float current_time) {
  1270→    for (int i = 0; i < action_count; i++) {

Now let me remove the SEQ PARSE debug output from the Lua binding.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2270→        else if (t == LUA_TNUMBER && delay_count < MAX_SEQUENCE_STEPS - 1) {
  2271→            delays[delay_count++] = (float)lua_tonumber(L, -1);
  2272→        }
  2273→        lua_pop(L, 1);
  2274→    }
  2275→
  2276→    // Validate: should have alternating action, delay, action, delay, action...
  2277→    // So action_count should be delay_count + 1
  2278→    if (action_count < 2 || action_count != delay_count + 1) {
  2279→        printf("Warning: Sequence format should be {action, delay, action, delay, action, ...}\n");
  2280→        lua_pushboolean(L, false);

Good, debug output is cleaned up. Let me build to make sure everything still compiles, then mark Step 8 as complete.

Exit code 1
anchor.c

src/anchor.c(602): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(596): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data

src/anchor.c(854): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1132): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1138): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1248): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1257): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1859): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : fatal error LNK1104: cannot open file 'build\anchor.exe'

Build failed!

The linker error is because the anchor.exe is likely still running. The user needs to close the game first. Let me try building again - sometimes this is a transient issue.

anchor.c

src/anchor.c(602): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(596): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data

src/anchor.c(854): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1132): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1138): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1248): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1257): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1859): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Build successful. Step 8 is complete. Let me update the todo list.

- [completed] Step 1: Raw keyboard state
- [completed] Step 2: Mouse state
- [completed] Step 3: Basic action binding
- [completed] Step 4: Unbinding and bind_all
- [completed] Step 5: Axis helpers
- [completed] Step 6: Gamepad support
- [completed] Step 7: Chords
- [completed] Step 8: Sequences
- [pending] Step 9: Holds
- [pending] Step 10: Input type detection
- [pending] Step 11: Rebinding capture
- [pending] Step 12: Utility functions

Step 8 is complete. Now I can move on to Step 9 (Holds). Let me check what's needed for that step by looking at the implementation plan.

The user wants a function to get the current hold duration while waiting for the hold to trigger. This makes sense for things like charge-up effects where you want to show a progress bar or visual feedback while charging.

So in addition to the hold triggering at a certain duration, we need:
- `input_get_hold_progress(name)` or `input_get_hold_duration(name)` - returns how long the action has been held so far

This could return:
- The raw time in seconds the action has been held
- Or a normalized 0-1 value (current_time / required_duration)

I think returning the raw time is more flexible - the user can normalize it themselves if they want. But actually, looking at the implementation plan again:

> - `input_bind_hold(name, duration, action)` — e.g., `('charge', 1.0, 'attack')`
> - Tracks how long source action has been held

So we're tracking how long the source action has been held. The user wants to be able to query this before it triggers.

Let me think about the API:
- `input_get_hold_duration('charge')` - returns how long 'attack' has been held (0 if not held, up to and beyond 1.0)
- Or maybe `input_get_hold_progress('charge')` - returns 0-1 normalized progress

I think both could be useful. Let me ask or just implement both. Actually, I'll implement a function that returns the raw duration held so far. The user can divide by the target duration to get progress if they want.

Let me proceed with Step 9.

- [completed] Step 1: Raw keyboard state
- [completed] Step 2: Mouse state
- [completed] Step 3: Basic action binding
- [completed] Step 4: Unbinding and bind_all
- [completed] Step 5: Axis helpers
- [completed] Step 6: Gamepad support
- [completed] Step 7: Chords
- [completed] Step 8: Sequences
- [in_progress] Step 9: Holds
- [pending] Step 10: Input type detection
- [pending] Step 11: Rebinding capture
- [pending] Step 12: Utility functions

Now let me implement Step 9: Holds.

I need to add:
1. Hold struct with: name, source action, required duration, current hold time, triggered state, just_triggered, was_triggered
2. `input_bind_hold(name, duration, action)` - create a hold
3. Hold state tracking - each frame check if source action is down and accumulate time
4. `is_pressed` - true when hold duration is first reached
5. `is_down` - true while held after duration reached
6. `is_released` - true when released after duration was reached
7. `input_get_hold_duration(name)` - returns current hold time

Let me add the Hold struct after the Sequence stuff.

835→} Sequence;
   836→
   837→static Sequence sequences[MAX_SEQUENCES];
   838→static int sequence_count = 0;
   839→
   840→// Find or create an action by name
   841→static Action* action_get_or_create(const char* name) {
   842→    // Find existing
   843→    for (int i = 0; i < action_count; i++) {
   844→        if (strcmp(actions[i].name, name) == 0) {

I'll add the Hold struct after the Sequence stuff.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   831→    int current_step;       // Which step we're waiting for (0 = first action)
   832→    float last_press_time;  // When last step was completed
   833→    bool just_fired;        // True for one frame when sequence completes
   834→    bool was_fired;         // For is_released edge detection
   835→} Sequence;
   836→
   837→static Sequence sequences[MAX_SEQUENCES];
   838→static int sequence_count = 0;
   839→
   840→// Hold: action that triggers after being held for a duration
   841→#define MAX_HOLDS 32
   842→
   843→typedef struct {
   844→    char name[MAX_ACTION_NAME];
   845→    char source_action[MAX_ACTION_NAME];
   846→    float required_duration;
   847→    float current_duration;     // How long source has been held
   848→    bool triggered;             // True once duration is reached (stays true while held)
   849→    bool just_triggered;        // True for one frame when duration is first reached
   850→    bool was_triggered;         // For is_released edge detection
   851→} Hold;
   852→
   853→static Hold holds[MAX_HOLDS];
   854→static int hold_count = 0;
   855→
   856→// Find or create an action by name
   857→static Action* action_get_or_create(const char* name) {
   858→    // Find existing
   859→    for (int i = 0; i < action_count; i++) {
... [1 more lines]

Good. Now I need to add the hold functions. Let me add them after the sequence functions (after `sequences_check_actions`).

1275→    }
  1276→
  1277→    for (int i = 0; i < step_count - 1; i++) {
  1278→        seq->delays[i] = delays[i];
  1279→    }
  1280→
  1281→    return true;
  1282→}
  1283→
  1284→// Check all actions for pressed state and notify sequences
  1285→static void sequences_check_actions(float current_time) {
  1286→    for (int i = 0; i < action_count; i++) {
  1287→        if (action_is_pressed(actions[i].name)) {
  1288→            sequences_on_action_pressed(actions[i].name, current_time);
  1289→        }
  1290→    }
  1291→}
  1292→
  1293→// Unified query functions that check actions, chords, and sequences
  1294→static bool input_is_down(const char* name) {

I'll add the hold functions after `sequences_check_actions` and before the unified query functions.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1280→
  1281→    return true;
  1282→}
  1283→
  1284→// Check all actions for pressed state and notify sequences
  1285→static void sequences_check_actions(float current_time) {
  1286→    for (int i = 0; i < action_count; i++) {
  1287→        if (action_is_pressed(actions[i].name)) {
  1288→            sequences_on_action_pressed(actions[i].name, current_time);
  1289→        }
  1290→    }
  1291→}
  1292→
  1293→// Hold functions
  1294→static Hold* hold_find(const char* name) {
  1295→    for (int i = 0; i < hold_count; i++) {
  1296→        if (strcmp(holds[i].name, name) == 0) {
  1297→            return &holds[i];
  1298→        }
  1299→    }
  1300→    return NULL;
  1301→}
  1302→
  1303→static bool hold_is_down(Hold* hold) {
  1304→    return hold && hold->triggered;
  1305→}
  1306→
  1307→static bool hold_is_pressed(Hold* hold) {
  1308→    return hold && hold->just_triggered;
... [82 more lines]

Good. Now I need to update the unified query functions to also check holds.

1386→// Unified query functions that check actions, chords, sequences, and holds
  1387→static bool input_is_down(const char* name) {
  1388→    // Check actions first
  1389→    if (action_is_down(name)) return true;
  1390→    // Check chords
  1391→    Chord* chord = chord_find(name);
  1392→    if (chord) return chord_is_down(chord);
  1393→    // Check sequences
  1394→    Sequence* seq = sequence_find(name);
  1395→    if (seq) return sequence_is_down(seq);
  1396→    return false;
  1397→}
  1398→
  1399→static bool input_is_pressed(const char* name) {
  1400→    // Check actions first
  1401→    if (action_is_pressed(name)) return true;
  1402→    // Check chords
  1403→    Chord* chord = chord_find(name);
  1404→    if (chord) return chord_is_pressed(chord);
  1405→    // Check sequences
  1406→    Sequence* seq = sequence_find(name);
  1407→    if (seq) return sequence_is_pressed(seq);
  1408→    return false;
  1409→}
  1410→
  1411→static bool input_is_released(const char* name) {
  1412→    // Check actions first
  1413→    if (action_is_released(name)) return true;
  1414→    // Check chords
  1415→    Chord* chord = chord_find(name);
... [10 more lines]

I need to update all three unified functions to also check holds.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1382→    Hold* hold = hold_find(name);
  1383→    return hold ? hold->current_duration : 0.0f;
  1384→}
  1385→
  1386→// Unified query functions that check actions, chords, sequences, and holds
  1387→static bool input_is_down(const char* name) {
  1388→    // Check actions first
  1389→    if (action_is_down(name)) return true;
  1390→    // Check chords
  1391→    Chord* chord = chord_find(name);
  1392→    if (chord) return chord_is_down(chord);
  1393→    // Check sequences
  1394→    Sequence* seq = sequence_find(name);
  1395→    if (seq) return sequence_is_down(seq);
  1396→    // Check holds
  1397→    Hold* hold = hold_find(name);
  1398→    if (hold) return hold_is_down(hold);
  1399→    return false;
  1400→}
  1401→
  1402→static bool input_is_pressed(const char* name) {
  1403→    // Check actions first
  1404→    if (action_is_pressed(name)) return true;
  1405→    // Check chords
  1406→    Chord* chord = chord_find(name);
  1407→    if (chord) return chord_is_pressed(chord);
  1408→    // Check sequences
  1409→    Sequence* seq = sequence_find(name);
  1410→    if (seq) return sequence_is_pressed(seq);
... [24 more lines]

Good. Now I need to:
1. Call `holds_update(dt)` in the main loop
2. Add Lua bindings for `input_bind_hold` and `input_get_hold_duration`

Let me find where `sequences_update` is called and add `holds_update` there.

2996-        for (int i = 0; i < layer_count; i++) {
2997-            layer_clear_commands(layer_registry[i]);
2998-        }
2999-
3000-        // Update sequences (clear just_fired from last frame, check timeouts)
3001:        sequences_update((float)game_time);
3002-
3003-        // Check which actions were pressed and notify sequences
3004-        sequences_check_actions((float)game_time);
3005-
3006-        // Call Lua update (skip if in error state)

I'll add holds_update after sequences_check_actions. It needs a dt parameter (the physics rate).

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2996→        for (int i = 0; i < layer_count; i++) {
  2997→            layer_clear_commands(layer_registry[i]);
  2998→        }
  2999→
  3000→        // Update sequences (clear just_fired from last frame, check timeouts)
  3001→        sequences_update((float)game_time);
  3002→
  3003→        // Check which actions were pressed and notify sequences
  3004→        sequences_check_actions((float)game_time);
  3005→
  3006→        // Update holds (track how long actions have been held)
  3007→        holds_update((float)PHYSICS_RATE);
  3008→
  3009→        // Call Lua update (skip if in error state)
  3010→        if (!error_state) {
  3011→            lua_pushcfunction(L, traceback);
  3012→            int err_handler = lua_gettop(L);
  3013→            lua_getglobal(L, "update");

Now I need to add the Lua bindings. Let me find where `l_input_bind_sequence` is and add `l_input_bind_hold` and `l_input_get_hold_duration` after it.

2370:static int l_input_bind_sequence(lua_State* L) {

Let me read around line 2395 to find where l_input_bind_sequence ends and add the hold bindings after it.

2395→    // So action_count should be delay_count + 1
  2396→    if (action_count < 2 || action_count != delay_count + 1) {
  2397→        printf("Warning: Sequence format should be {action, delay, action, delay, action, ...}\n");
  2398→        lua_pushboolean(L, false);
  2399→        return 1;
  2400→    }
  2401→
  2402→    lua_pushboolean(L, input_bind_sequence_internal(name, action_names, delays, action_count));
  2403→    return 1;
  2404→}
  2405→
  2406→static int l_input_unbind(lua_State* L) {
  2407→    const char* action = luaL_checkstring(L, 1);
  2408→    const char* control = luaL_checkstring(L, 2);
  2409→    lua_pushboolean(L, input_unbind_control(action, control));
  2410→    return 1;
  2411→}
  2412→
  2413→static int l_input_unbind_all(lua_State* L) {
  2414→    const char* action = luaL_checkstring(L, 1);

I'll add the hold Lua bindings after l_input_bind_sequence.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2398→        lua_pushboolean(L, false);
  2399→        return 1;
  2400→    }
  2401→
  2402→    lua_pushboolean(L, input_bind_sequence_internal(name, action_names, delays, action_count));
  2403→    return 1;
  2404→}
  2405→
  2406→// input_bind_hold(name, duration, source_action)
  2407→static int l_input_bind_hold(lua_State* L) {
  2408→    const char* name = luaL_checkstring(L, 1);
  2409→    float duration = (float)luaL_checknumber(L, 2);
  2410→    const char* source_action = luaL_checkstring(L, 3);
  2411→    lua_pushboolean(L, input_bind_hold_internal(name, duration, source_action));
  2412→    return 1;
  2413→}
  2414→
  2415→// input_get_hold_duration(name) - returns how long the source action has been held
  2416→static int l_input_get_hold_duration(lua_State* L) {
  2417→    const char* name = luaL_checkstring(L, 1);
  2418→    lua_pushnumber(L, input_get_hold_duration(name));
  2419→    return 1;
  2420→}
  2421→
  2422→static int l_input_unbind(lua_State* L) {
  2423→    const char* action = luaL_checkstring(L, 1);
  2424→    const char* control = luaL_checkstring(L, 2);
  2425→    lua_pushboolean(L, input_unbind_control(action, control));
  2426→    return 1;

Good. Now I need to register these Lua functions. Let me find where `input_bind_sequence` is registered.

2530-    // Input - Action binding
2531-    lua_register(L, "input_bind", l_input_bind);
2532-    lua_register(L, "input_bind_chord", l_input_bind_chord);
2533:    lua_register(L, "input_bind_sequence", l_input_bind_sequence);
2534-    lua_register(L, "input_unbind", l_input_unbind);
2535-    lua_register(L, "input_unbind_all", l_input_unbind_all);
2536-    lua_register(L, "input_bind_all", l_input_bind_all);

I'll add the hold registrations after input_bind_sequence.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2527→    lua_register(L, "mouse_is_pressed", l_mouse_is_pressed);
  2528→    lua_register(L, "mouse_is_released", l_mouse_is_released);
  2529→    lua_register(L, "mouse_wheel", l_mouse_wheel);
  2530→    // Input - Action binding
  2531→    lua_register(L, "input_bind", l_input_bind);
  2532→    lua_register(L, "input_bind_chord", l_input_bind_chord);
  2533→    lua_register(L, "input_bind_sequence", l_input_bind_sequence);
  2534→    lua_register(L, "input_bind_hold", l_input_bind_hold);
  2535→    lua_register(L, "input_get_hold_duration", l_input_get_hold_duration);
  2536→    lua_register(L, "input_unbind", l_input_unbind);
  2537→    lua_register(L, "input_unbind_all", l_input_unbind_all);
  2538→    lua_register(L, "input_bind_all", l_input_bind_all);
  2539→    lua_register(L, "input_get_axis", l_input_get_axis);
  2540→    lua_register(L, "input_get_vector", l_input_get_vector);

Good. Now let me build and update the test file.

anchor.c

src/anchor.c(602): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(596): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data

src/anchor.c(870): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1148): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1154): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1264): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1273): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1367): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1369): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1977): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Build successful. Now let me update the test file to test the hold functionality.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→print("main.lua loaded - Input Test (Step 9: Holds)")
     2→
     3→set_shape_filter("rough")
     4→
     5→local screen_w, screen_h = 480, 270
     6→
     7→-- Use input_bind_all to create default bindings for all keys/mouse buttons
     8→input_bind_all()
     9→print("input_bind_all() called - all keys now have actions")
    10→
    11→-- Set up chord: Shift+Space triggers 'super_action'
    12→input_bind_chord('super_action', {'lshift', 'space'})
    13→print("Chord 'super_action' = Shift + Space")
    14→
    15→-- Set up sequence: double-tap D triggers 'dash'
    16→-- Format: {action1, delay, action2} - press D, then D again within 0.3s
    17→input_bind_sequence('dash', {'d', 0.3, 'd'})
    18→print("Sequence 'dash' = D, D (within 0.3s)")
    19→
    20→-- Set up hold: hold Space for 1 second triggers 'charge'
    21→input_bind_hold('charge', 1.0, 'space')
    22→print("Hold 'charge' = hold Space for 1.0s")
    23→
    24→-- Set up custom action bindings (keyboard + mouse)
    25→input_bind('move_up', 'key:w')
    26→input_bind('move_up', 'key:up')

Now I need to add the test for holds in the update function. Let me find the dash test and add the hold test after it.

207→    if is_released('super_action') then
   208→        print("SUPER ACTION RELEASED!")
   209→    end
   210→
   211→    -- === Sequence test: double-tap D triggers 'dash' ===
   212→    if is_pressed('dash') then
   213→        pressed_flash = 0.5  -- Flash for sequence
   214→        print("DASH PRESSED! (D, D sequence)")
   215→    end
   216→    if is_released('dash') then
   217→        print("DASH RELEASED!")
   218→    end
   219→
   220→    -- === Test unbind/rebind with U/R keys ===
   221→    if is_pressed('u') then
   222→        input_unbind('action', 'mouse:1')
   223→        print("UNBIND: mouse:1 removed from 'action' - left click no longer triggers flash!")
   224→    end
   225→    if is_pressed('r') then
   226→        input_bind('action', 'mouse:1')

I'll add the hold test after the dash test.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   207→    if is_released('super_action') then
   208→        print("SUPER ACTION RELEASED!")
   209→    end
   210→
   211→    -- === Sequence test: double-tap D triggers 'dash' ===
   212→    if is_pressed('dash') then
   213→        pressed_flash = 0.5  -- Flash for sequence
   214→        print("DASH PRESSED! (D, D sequence)")
   215→    end
   216→    if is_released('dash') then
   217→        print("DASH RELEASED!")
   218→    end
   219→
   220→    -- === Hold test: hold Space for 1s triggers 'charge' ===
   221→    -- Show charge progress while holding (before it triggers)
   222→    local charge_duration = input_get_hold_duration('charge')
   223→    if charge_duration > 0 and charge_duration < 1.0 then
   224→        -- Could use this to show a charge bar: charge_duration / 1.0 = progress 0-1
   225→        print(string.format("Charging: %.1f%%", charge_duration * 100))
   226→    end
   227→    if is_pressed('charge') then
   228→        pressed_flash = 0.5
   229→        print("CHARGE TRIGGERED! (held Space for 1s)")
   230→    end
   231→    if is_released('charge') then
   232→        print("CHARGE RELEASED!")
   233→    end
   234→
   235→    -- === Test unbind/rebind with U/R keys ===
... [4 more lines]

Good. The test is set up. Now the user can test by holding Space for 1 second. They should see:
1. "Charging: X.X%" messages as they hold (from 0% up to 100%)
2. "CHARGE TRIGGERED!" when the 1 second is reached
3. "CHARGE RELEASED!" when they release Space after it triggered

Note: There's a potential issue - the "Charging" message will spam the console at 120Hz while holding. That's fine for debugging but might be noisy. The user can see if it works.

Also, I notice there might be a conflict: Space is bound to both 'action' and 'space' (via bind_all). The hold is watching 'space'. Let me check if that's correct...

Actually, looking at the test setup:
- `input_bind_all()` creates action 'space' bound to 'key:space'  
- `input_bind('action', 'key:space')` binds 'key:space' to action 'action' too
- `input_bind_hold('charge', 1.0, 'space')` watches action 'space'

So holding Space will:
1. Trigger 'action' is_pressed (flash)
2. Start accumulating time on 'charge' hold
3. After 1s, 'charge' is_pressed fires

This should work. Let me verify the test is ready.

Step 9 (Holds) is complete. Let me mark it as done and move on to Step 10 (Input type detection).

- [completed] Step 1: Raw keyboard state
- [completed] Step 2: Mouse state
- [completed] Step 3: Basic action binding
- [completed] Step 4: Unbinding and bind_all
- [completed] Step 5: Axis helpers
- [completed] Step 6: Gamepad support
- [completed] Step 7: Chords
- [completed] Step 8: Sequences
- [completed] Step 9: Holds
- [in_progress] Step 10: Input type detection
- [pending] Step 11: Rebinding capture
- [pending] Step 12: Utility functions

Step 10 is Input type detection. Let me check the implementation plan for details.

557-- [ ] `is_down` true while held after duration reached
558-- [ ] `is_released` fires when released after duration was reached
559-- [ ] Resets when source action released before duration
560-- [ ] Holds queryable via `is_pressed`/`is_down`/`is_released`
561-
562:**Step 10: Input type detection**
563-- [ ] Track last input type: `'keyboard'`, `'mouse'`, or `'gamepad'`
564-- [ ] Updated whenever any input is received
565:- [ ] `input_get_last_type()` — returns current type string
566-- [ ] Useful for UI prompt switching (show keyboard vs gamepad icons)
567-
568-**Step 11: Rebinding capture**
569-- [ ] Capture mode flag
570-- [ ] `input_start_capture()` — enter capture mode, suppress normal input processing
--
614-if gamepad_is_connected() then
615-    local rx = gamepad_get_axis('rightx')  -- -1 to 1
616-end
617-
618--- Input type detection (for UI prompts)
619:local input_type = input_get_last_type()  -- 'keyboard', 'mouse', or 'gamepad'
620-
621--- Rebinding capture (for options menu)
622-input_start_capture()
623--- ... wait for user to press something ...
624-local control = input_get_captured()  -- 'key:w' or nil
--
646-- [ ] Step 5: `input_get_axis` returns -1/0/1, `input_get_vector` normalizes diagonal
647-- [ ] Step 6: Gamepad detected, `gamepad_get_axis` returns analog values
648-- [ ] Step 7: Chord fires only when all actions held simultaneously
... [8 more lines]

Step 10 is straightforward:
- Track the last input type as a string: 'keyboard', 'mouse', or 'gamepad'
- Update it whenever any input is received
- Provide `input_get_last_type()` to query it

I'll:
1. Add an enum or string variable to track the input type
2. Update it in the event loop when keyboard/mouse/gamepad input is received
3. Add a Lua binding to query it

Let me implement this.

850→    bool was_triggered;         // For is_released edge detection
   851→} Hold;
   852→
   853→static Hold holds[MAX_HOLDS];
   854→static int hold_count = 0;
   855→
   856→// Find or create an action by name
   857→static Action* action_get_or_create(const char* name) {
   858→    // Find existing
   859→    for (int i = 0; i < action_count; i++) {

I'll add an enum for input type and a variable to track it. Then update it in the event handling code.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   849→    bool just_triggered;        // True for one frame when duration is first reached
   850→    bool was_triggered;         // For is_released edge detection
   851→} Hold;
   852→
   853→static Hold holds[MAX_HOLDS];
   854→static int hold_count = 0;
   855→
   856→// Input type detection - track last input device used
   857→typedef enum {
   858→    INPUT_TYPE_KEYBOARD,
   859→    INPUT_TYPE_MOUSE,
   860→    INPUT_TYPE_GAMEPAD,
   861→} InputType;
   862→
   863→static InputType last_input_type = INPUT_TYPE_KEYBOARD;
   864→
   865→static const char* input_type_to_string(InputType type) {
   866→    switch (type) {
   867→        case INPUT_TYPE_KEYBOARD: return "keyboard";
   868→        case INPUT_TYPE_MOUSE: return "mouse";
   869→        case INPUT_TYPE_GAMEPAD: return "gamepad";
   870→        default: return "keyboard";
   871→    }
   872→}
   873→
   874→// Find or create an action by name
   875→static Action* action_get_or_create(const char* name) {
   876→    // Find existing
   877→    for (int i = 0; i < action_count; i++) {
... [1 more lines]

Good. Now I need to update `last_input_type` in the event handling code. Let me find where keyboard, mouse, and gamepad events are handled.

No matches found

Let me search separately for each event type.

2943-    while (SDL_PollEvent(&event)) {
2944-        if (event.type == SDL_QUIT) {
2945-            running = false;
2946-        }
2947-        // Track keyboard state
2948:        if (event.type == SDL_KEYDOWN && !event.key.repeat) {
2949-            SDL_Scancode sc = event.key.keysym.scancode;
2950-            if (sc < SDL_NUM_SCANCODES) {
2951-                keys_current[sc] = true;
2952-            }
2953-            // Built-in key handling

Let me see more context around the event handling to find all the places where I need to update last_input_type.

2943→    while (SDL_PollEvent(&event)) {
  2944→        if (event.type == SDL_QUIT) {
  2945→            running = false;
  2946→        }
  2947→        // Track keyboard state
  2948→        if (event.type == SDL_KEYDOWN && !event.key.repeat) {
  2949→            SDL_Scancode sc = event.key.keysym.scancode;
  2950→            if (sc < SDL_NUM_SCANCODES) {
  2951→                keys_current[sc] = true;
  2952→            }
  2953→            // Built-in key handling
  2954→            if (event.key.keysym.sym == SDLK_ESCAPE) {
  2955→                running = false;
  2956→            }
  2957→            #ifndef __EMSCRIPTEN__
  2958→            // Fullscreen toggle only on desktop
  2959→            if (event.key.keysym.sym == SDLK_F11 ||
  2960→                (event.key.keysym.sym == SDLK_RETURN && (event.key.keysym.mod & KMOD_ALT))) {
  2961→                Uint32 flags = SDL_GetWindowFlags(window);
  2962→                SDL_SetWindowFullscreen(window, (flags & SDL_WINDOW_FULLSCREEN_DESKTOP) ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
  2963→            }
  2964→            #endif
  2965→        }
  2966→        if (event.type == SDL_KEYUP) {
  2967→            SDL_Scancode sc = event.key.keysym.scancode;
  2968→            if (sc < SDL_NUM_SCANCODES) {
  2969→                keys_current[sc] = false;
  2970→            }
  2971→        }
  2972→        // Track mouse motion
... [30 more lines]

I'll update `last_input_type` in each of these events:- SDL_KEYDOWN -> keyboard
- SDL_MOUSEMOTION, SDL_MOUSEBUTTONDOWN, SDL_MOUSEWHEEL -> mouse
- For gamepad, I need to check where gamepad input is detected. Let me look at gamepad_update.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2943→    while (SDL_PollEvent(&event)) {
  2944→        if (event.type == SDL_QUIT) {
  2945→            running = false;
  2946→        }
  2947→        // Track keyboard state
  2948→        if (event.type == SDL_KEYDOWN && !event.key.repeat) {
  2949→            last_input_type = INPUT_TYPE_KEYBOARD;
  2950→            SDL_Scancode sc = event.key.keysym.scancode;
  2951→            if (sc < SDL_NUM_SCANCODES) {
  2952→                keys_current[sc] = true;
  2953→            }
  2954→            // Built-in key handling
  2955→            if (event.key.keysym.sym == SDLK_ESCAPE) {
  2956→                running = false;
  2957→            }

Good. Now let me add mouse input type tracking.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2969→            if (sc < SDL_NUM_SCANCODES) {
  2970→                keys_current[sc] = false;
  2971→            }
  2972→        }
  2973→        // Track mouse motion
  2974→        if (event.type == SDL_MOUSEMOTION) {
  2975→            last_input_type = INPUT_TYPE_MOUSE;
  2976→            mouse_x = event.motion.x;
  2977→            mouse_y = event.motion.y;
  2978→            mouse_dx += event.motion.xrel;
  2979→            mouse_dy += event.motion.yrel;
  2980→        }
  2981→        // Track mouse buttons
  2982→        if (event.type == SDL_MOUSEBUTTONDOWN) {
  2983→            last_input_type = INPUT_TYPE_MOUSE;
  2984→            int btn = event.button.button - 1;  // SDL buttons are 1-indexed
  2985→            if (btn >= 0 && btn < MAX_MOUSE_BUTTONS) {
  2986→                mouse_buttons_current[btn] = true;
  2987→            }
  2988→        }
  2989→        if (event.type == SDL_MOUSEBUTTONUP) {
  2990→            int btn = event.button.button - 1;
  2991→            if (btn >= 0 && btn < MAX_MOUSE_BUTTONS) {
  2992→                mouse_buttons_current[btn] = false;

Good. Now I need to add gamepad input type tracking. This should happen in the gamepad_update function when buttons or axes change significantly. Let me find that function.

714-    if (strcmp(name, "kpdivide") == 0) return SDL_SCANCODE_KP_DIVIDE;
715-    if (strcmp(name, "kpperiod") == 0) return SDL_SCANCODE_KP_PERIOD;
716-
717-    return SDL_SCANCODE_UNKNOWN;
718-}
719-
720-// Copy current input state to previous (called at end of physics frame)
721-static void input_post_update(void) {
722-    memcpy(keys_previous, keys_current, sizeof(keys_previous));
723-    memcpy(mouse_buttons_previous, mouse_buttons_current, sizeof(mouse_buttons_previous));
724-    memcpy(gamepad_buttons_previous, gamepad_buttons_current, sizeof(gamepad_buttons_previous));
725-    memcpy(gamepad_axes_previous, gamepad_axes, sizeof(gamepad_axes_previous));
726-    // Reset per-frame deltas
727-    mouse_dx = 0;
728-    mouse_dy = 0;
729-    mouse_wheel_x = 0;
730-    mouse_wheel_y = 0;
731-}
732-
733-// Update gamepad state (call once per frame before input processing)
734:static void gamepad_update(void) {
735-    if (!gamepad) return;
736-
737-    // Update buttons
738-    for (int i = 0; i < SDL_CONTROLLER_BUTTON_MAX; i++) {
739-        gamepad_buttons_current[i] = SDL_GameControllerGetButton(gamepad, (SDL_GameControllerButton)i);
740-    }
741-
742-    // Update axes (normalize from -32768..32767 to -1..1)
743-    for (int i = 0; i < SDL_CONTROLLER_AXIS_MAX; i++) {
... [11 more lines]

I should detect gamepad input when buttons are pressed or axes move significantly. Let me modify gamepad_update to track this.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   729→    mouse_wheel_x = 0;
   730→    mouse_wheel_y = 0;
   731→}
   732→
   733→// Update gamepad state (call once per frame before input processing)
   734→static void gamepad_update(void) {
   735→    if (!gamepad) return;
   736→
   737→    // Update buttons
   738→    for (int i = 0; i < SDL_CONTROLLER_BUTTON_MAX; i++) {
   739→        bool was_down = gamepad_buttons_current[i];
   740→        gamepad_buttons_current[i] = SDL_GameControllerGetButton(gamepad, (SDL_GameControllerButton)i);
   741→        // Detect button press for input type tracking
   742→        if (gamepad_buttons_current[i] && !was_down) {
   743→            last_input_type = INPUT_TYPE_GAMEPAD;
   744→        }
   745→    }
   746→
   747→    // Update axes (normalize from -32768..32767 to -1..1)
   748→    for (int i = 0; i < SDL_CONTROLLER_AXIS_MAX; i++) {
   749→        float prev = gamepad_axes[i];
   750→        Sint16 raw = SDL_GameControllerGetAxis(gamepad, (SDL_GameControllerAxis)i);
   751→        gamepad_axes[i] = raw / 32767.0f;
   752→        // Clamp to -1..1 (raw -32768 would give slightly more than -1)
   753→        if (gamepad_axes[i] < -1.0f) gamepad_axes[i] = -1.0f;
   754→        // Detect significant axis movement for input type tracking
   755→        if (fabsf(gamepad_axes[i]) > 0.5f && fabsf(prev) <= 0.5f) {
   756→            last_input_type = INPUT_TYPE_GAMEPAD;
   757→        }
... [6 more lines]

Good. Now I need to add the Lua binding for `input_get_last_type()`.

2436-    const char* name = luaL_checkstring(L, 1);
2437-    float duration = (float)luaL_checknumber(L, 2);
2438-    const char* source_action = luaL_checkstring(L, 3);
2439-    lua_pushboolean(L, input_bind_hold_internal(name, duration, source_action));
2440-    return 1;
2441-}
2442-
2443-// input_get_hold_duration(name) - returns how long the source action has been held
2444:static int l_input_get_hold_duration(lua_State* L) {
2445-    const char* name = luaL_checkstring(L, 1);
2446-    lua_pushnumber(L, input_get_hold_duration(name));
2447-    return 1;
2448-}
2449-
2450-static int l_input_unbind(lua_State* L) {
2451-    const char* action = luaL_checkstring(L, 1);
2452-    const char* control = luaL_checkstring(L, 2);
--
2555-    lua_register(L, "mouse_is_pressed", l_mouse_is_pressed);
2556-    lua_register(L, "mouse_is_released", l_mouse_is_released);
2557-    lua_register(L, "mouse_wheel", l_mouse_wheel);
2558-    // Input - Action binding
2559-    lua_register(L, "input_bind", l_input_bind);
2560-    lua_register(L, "input_bind_chord", l_input_bind_chord);
2561-    lua_register(L, "input_bind_sequence", l_input_bind_sequence);
2562-    lua_register(L, "input_bind_hold", l_input_bind_hold);
2563:    lua_register(L, "input_get_hold_duration", l_input_get_hold_duration);
2564-    lua_register(L, "input_unbind", l_input_unbind);
2565-    lua_register(L, "input_unbind_all", l_input_unbind_all);
2566-    lua_register(L, "input_bind_all", l_input_bind_all);
... [5 more lines]

I'll add the l_input_get_last_type function after l_input_get_hold_duration and then register it.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2439→    lua_pushboolean(L, input_bind_hold_internal(name, duration, source_action));
  2440→    return 1;
  2441→}
  2442→
  2443→// input_get_hold_duration(name) - returns how long the source action has been held
  2444→static int l_input_get_hold_duration(lua_State* L) {
  2445→    const char* name = luaL_checkstring(L, 1);
  2446→    lua_pushnumber(L, input_get_hold_duration(name));
  2447→    return 1;
  2448→}
  2449→
  2450→// input_get_last_type() - returns 'keyboard', 'mouse', or 'gamepad'
  2451→static int l_input_get_last_type(lua_State* L) {
  2452→    lua_pushstring(L, input_type_to_string(last_input_type));
  2453→    return 1;
  2454→}
  2455→
  2456→static int l_input_unbind(lua_State* L) {
  2457→    const char* action = luaL_checkstring(L, 1);
  2458→    const char* control = luaL_checkstring(L, 2);
  2459→    lua_pushboolean(L, input_unbind_control(action, control));
  2460→    return 1;

Good. Now register it.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2564→    // Input - Action binding
  2565→    lua_register(L, "input_bind", l_input_bind);
  2566→    lua_register(L, "input_bind_chord", l_input_bind_chord);
  2567→    lua_register(L, "input_bind_sequence", l_input_bind_sequence);
  2568→    lua_register(L, "input_bind_hold", l_input_bind_hold);
  2569→    lua_register(L, "input_get_hold_duration", l_input_get_hold_duration);
  2570→    lua_register(L, "input_get_last_type", l_input_get_last_type);
  2571→    lua_register(L, "input_unbind", l_input_unbind);
  2572→    lua_register(L, "input_unbind_all", l_input_unbind_all);
  2573→    lua_register(L, "input_bind_all", l_input_bind_all);
  2574→    lua_register(L, "input_get_axis", l_input_get_axis);
  2575→    lua_register(L, "input_get_vector", l_input_get_vector);

Good. Now let me build and update the test.

Exit code 1
anchor.c

src/anchor.c(602): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(596): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data

src/anchor.c(743): error C2065: 'last_input_type': undeclared identifier

src/anchor.c(743): error C2065: 'INPUT_TYPE_GAMEPAD': undeclared identifier

src/anchor.c(756): error C2065: 'last_input_type': undeclared identifier

src/anchor.c(756): error C2065: 'INPUT_TYPE_GAMEPAD': undeclared identifier

src/anchor.c(898): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1176): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1182): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1292): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1301): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1395): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1397): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(2005): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

Build failed!

The issue is that I put the input type enum/variable after the gamepad_update function that uses it. I need to move the enum and variable declaration earlier in the file, before gamepad_update.Let me find where gamepad_update is and move the input type definitions before it.

566-static bool gamepad_buttons_previous[SDL_CONTROLLER_BUTTON_MAX] = {0};
567-static float gamepad_axes[SDL_CONTROLLER_AXIS_MAX] = {0};
568-static float gamepad_axes_previous[SDL_CONTROLLER_AXIS_MAX] = {0};
569:static float gamepad_deadzone = 0.2f;  // Default deadzone for axis→button conversion
570-
571-// Convert gamepad button name to SDL button enum
572-static SDL_GameControllerButton gamepad_button_from_name(const char* name) {

I need to add the input type enum before gamepad_update. Let me add it after the gamepad_deadzone variable.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   565→static bool gamepad_buttons_current[SDL_CONTROLLER_BUTTON_MAX] = {0};
   566→static bool gamepad_buttons_previous[SDL_CONTROLLER_BUTTON_MAX] = {0};
   567→static float gamepad_axes[SDL_CONTROLLER_AXIS_MAX] = {0};
   568→static float gamepad_axes_previous[SDL_CONTROLLER_AXIS_MAX] = {0};
   569→static float gamepad_deadzone = 0.2f;  // Default deadzone for axis→button conversion
   570→
   571→// Input type detection - track last input device used
   572→typedef enum {
   573→    INPUT_TYPE_KEYBOARD,
   574→    INPUT_TYPE_MOUSE,
   575→    INPUT_TYPE_GAMEPAD,
   576→} InputType;
   577→
   578→static InputType last_input_type = INPUT_TYPE_KEYBOARD;
   579→
   580→// Convert gamepad button name to SDL button enum
   581→static SDL_GameControllerButton gamepad_button_from_name(const char* name) {
   582→    if (!name) return SDL_CONTROLLER_BUTTON_INVALID;
   583→    if (strcmp(name, "a") == 0) return SDL_CONTROLLER_BUTTON_A;
   584→    if (strcmp(name, "b") == 0) return SDL_CONTROLLER_BUTTON_B;

Now I need to remove the duplicate definition I added earlier in the Hold section.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   868→    bool just_triggered;        // True for one frame when duration is first reached
   869→    bool was_triggered;         // For is_released edge detection
   870→} Hold;
   871→
   872→static Hold holds[MAX_HOLDS];
   873→static int hold_count = 0;
   874→
   875→// Find or create an action by name
   876→static Action* action_get_or_create(const char* name) {
   877→    // Find existing
   878→    for (int i = 0; i < action_count; i++) {
   879→        if (strcmp(actions[i].name, name) == 0) {

Now I need to add the `input_type_to_string` function near where the enum is defined, or before it's used in the Lua binding. Let me add it right after the enum definition.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   567→static float gamepad_axes[SDL_CONTROLLER_AXIS_MAX] = {0};
   568→static float gamepad_axes_previous[SDL_CONTROLLER_AXIS_MAX] = {0};
   569→static float gamepad_deadzone = 0.2f;  // Default deadzone for axis→button conversion
   570→
   571→// Input type detection - track last input device used
   572→typedef enum {
   573→    INPUT_TYPE_KEYBOARD,
   574→    INPUT_TYPE_MOUSE,
   575→    INPUT_TYPE_GAMEPAD,
   576→} InputType;
   577→
   578→static InputType last_input_type = INPUT_TYPE_KEYBOARD;
   579→
   580→static const char* input_type_to_string(InputType type) {
   581→    switch (type) {
   582→        case INPUT_TYPE_KEYBOARD: return "keyboard";
   583→        case INPUT_TYPE_MOUSE: return "mouse";
   584→        case INPUT_TYPE_GAMEPAD: return "gamepad";
   585→        default: return "keyboard";
   586→    }
   587→}
   588→
   589→// Convert gamepad button name to SDL button enum
   590→static SDL_GameControllerButton gamepad_button_from_name(const char* name) {
   591→    if (!name) return SDL_CONTROLLER_BUTTON_INVALID;
   592→    if (strcmp(name, "a") == 0) return SDL_CONTROLLER_BUTTON_A;
   593→    if (strcmp(name, "b") == 0) return SDL_CONTROLLER_BUTTON_B;

Good. Now let me build again.

anchor.c

src/anchor.c(620): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(614): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data

src/anchor.c(898): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1176): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1182): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1292): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1301): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1395): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1397): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(2005): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Build successful. Now let me update the test file to show the input type.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→print("main.lua loaded - Input Test (Step 10: Input Type Detection)")
     2→
     3→set_shape_filter("rough")
     4→
     5→local screen_w, screen_h = 480, 270

Let me add a test that prints input type changes. I'll track the previous type and print when it changes.

115→-- Stars orbiting the smile
   116→local num_stars = 5
   117→local orbit_radius = 35
   118→local orbit_speed = 2.0
   119→local star_spin_speed = 3.0
   120→
   121→local game_time = 0
   122→
   123→-- Input test state
   124→local move_speed = 150
   125→local pressed_flash = 0  -- Flash timer when action is triggered
   126→local cursor_radius = 8  -- Cursor size (affected by scroll wheel)
   127→
   128→-- Helper to draw objects only (no background) - for outline layer
   129→local function draw_objects(layer)

I'll add a variable to track the previous input type and print when it changes.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   119→local star_spin_speed = 3.0
   120→
   121→local game_time = 0
   122→
   123→-- Input test state
   124→local move_speed = 150
   125→local pressed_flash = 0  -- Flash timer when action is triggered
   126→local cursor_radius = 8  -- Cursor size (affected by scroll wheel)
   127→local last_input_type = "keyboard"  -- Track for change detection
   128→
   129→-- Helper to draw objects only (no background) - for outline layer
   130→local function draw_objects(layer)
   131→    -- Draw ball (flashes white when action is triggered)

Now let me add the input type detection test in the update function.

292-    local dx, dy = mouse_delta()
293-    if math.abs(dx) > 5 or math.abs(dy) > 5 then
294-        print("Mouse delta: " .. dx .. ", " .. dy)
295-    end
296-
297:    -- Decay flash timers
298-    if pressed_flash > 0 then
299-        pressed_flash = pressed_flash - dt
300-    end
301-
302-    -- === Update ball (no auto-movement, just keep in bounds) ===

I'll add the input type detection test before the "Decay flash timers" section.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   293→    if math.abs(dx) > 5 or math.abs(dy) > 5 then
   294→        print("Mouse delta: " .. dx .. ", " .. dy)
   295→    end
   296→
   297→    -- === Input type detection test ===
   298→    local current_input_type = input_get_last_type()
   299→    if current_input_type ~= last_input_type then
   300→        print("Input type changed: " .. last_input_type .. " -> " .. current_input_type)
   301→        last_input_type = current_input_type
   302→    end
   303→
   304→    -- Decay flash timers
   305→    if pressed_flash > 0 then
   306→        pressed_flash = pressed_flash - dt
   307→    end
   308→
   309→    -- === Update ball (no auto-movement, just keep in bounds) ===
   310→    ball.hue = (ball.hue + ball.hue_speed * dt) % 360
   311→
   312→    -- Keep ball in bounds
   313→    if ball.x - ball.radius < 0 then ball.x = ball.radius end

Good, the test is set up. Now when the user switches between keyboard, mouse, and gamepad, they'll see a message like "Input type changed: keyboard -> mouse".Step 10 is complete. Let me summarize what was done.

The user wants to test gamepad functionality. Let me add some gamepad-specific tests to the main.lua file. I should add tests for:
1. Gamepad button presses
2. Gamepad axis values
3. The input type changing to 'gamepad' when using the controller

Let me look at what gamepad bindings are already set up and add some visible tests.

250→    if is_pressed('mouse_2') then
   251→        print("Middle mouse pressed via bind_all action 'mouse_2'")
   252→    end
   253→    if is_pressed('mouse_3') then
   254→        print("Right mouse pressed via bind_all action 'mouse_3'")
   255→    end
   256→
   257→    -- === Gamepad tests ===
   258→    -- Print raw axis values on G key (for debugging)
   259→    if is_pressed('g') and gamepad_is_connected() then
   260→        print(string.format("Gamepad axes - LX:%.2f LY:%.2f RX:%.2f RY:%.2f LT:%.2f RT:%.2f",
   261→            gamepad_get_axis('leftx'), gamepad_get_axis('lefty'),
   262→            gamepad_get_axis('rightx'), gamepad_get_axis('righty'),
   263→            gamepad_get_axis('triggerleft'), gamepad_get_axis('triggerright')))
   264→    end
   265→
   266→    -- === Raw mouse tests (for cursor color, wheel, delta) ===
   267→    if mouse_is_pressed(2) then
   268→        print("Middle mouse PRESSED!")  -- SDL button 2 = middle
   269→    end
   270→    if mouse_is_pressed(3) then
   271→        print("Right mouse PRESSED!")  -- SDL button 3 = right
   272→    end
   273→
   274→    if mouse_is_released(2) then
   275→        print("Middle mouse RELEASED!")
   276→    end
   277→    if mouse_is_released(3) then
   278→        print("Right mouse RELEASED!")
   279→    end

I'll expand the gamepad tests section to include:1. Print when gamepad is connected/disconnected at startup
2. Print when specific gamepad buttons are pressed (A, B, X, Y)
3. Print axis values continuously when they're significant
4. Test that the movement (move_left, move_right, etc.) works with gamepad via action system

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   253→    if is_pressed('mouse_3') then
   254→        print("Right mouse pressed via bind_all action 'mouse_3'")
   255→    end
   256→
   257→    -- === Gamepad tests ===
   258→    if gamepad_is_connected() then
   259→        -- Test gamepad buttons via action system (A and X are bound to 'action')
   260→        -- These should flash the ball just like space/left-click
   261→
   262→        -- Test specific button presses
   263→        if is_pressed('button_a') then
   264→            print("Gamepad A pressed!")
   265→            pressed_flash = 0.3
   266→        end
   267→        if is_pressed('button_b') then
   268→            print("Gamepad B pressed!")
   269→        end
   270→        if is_pressed('button_x') then
   271→            print("Gamepad X pressed!")
   272→            pressed_flash = 0.3
   273→        end
   274→        if is_pressed('button_y') then
   275→            print("Gamepad Y pressed!")
   276→        end
   277→
   278→        -- Print raw axis values on G key (for debugging)
   279→        if is_pressed('g') then
   280→            print(string.format("Gamepad axes - LX:%.2f LY:%.2f RX:%.2f RY:%.2f LT:%.2f RT:%.2f",
   281→                gamepad_get_axis('leftx'), gamepad_get_axis('lefty'),
... [24 more lines]

Wait, I'm using `is_pressed('button_a')` but I need to check if `input_bind_all` creates actions with that name. Looking at the code, `input_bind_all` creates actions for gamepad buttons with names like 'button_a', 'button_b', etc. Let me verify this by checking the implementation.

Actually, looking at my earlier implementation, I need to check what action names `input_bind_all` creates for gamepad buttons. Let me search for that.

1487-static void input_unbind_all_controls(const char* action_name) {
1488-    Action* action = action_find(action_name);
1489-    if (action) {
1490-        action->control_count = 0;
1491-    }
1492-}
1493-
1494-// Bind all standard inputs to actions with matching names
1495-// Keys become actions like 'a', 'space', 'left', etc.
1496-// Mouse buttons become 'mouse_1', 'mouse_2', etc.
1497:static void input_bind_all_defaults(void) {
1498-    // Letters a-z
1499-    for (char c = 'a'; c <= 'z'; c++) {
1500-        char action_name[2] = {c, '\0'};
1501-        char control_str[8];
1502-        snprintf(control_str, sizeof(control_str), "key:%c", c);
1503-        input_bind_control(action_name, control_str);
1504-    }
1505-
1506-    // Numbers 0-9
1507-    for (char c = '0'; c <= '9'; c++) {
--
2461-}
2462-
2463-static int l_input_unbind_all(lua_State* L) {
2464-    const char* action = luaL_checkstring(L, 1);
2465-    input_unbind_all_controls(action);
2466-    return 0;
2467-}
2468-
... [13 more lines]

I see `input_bind_all_defaults` but it only binds keyboard keys and mouse buttons. It doesn't bind gamepad buttons to actions. So `is_pressed('button_a')` won't work.I need to either:
1. Add gamepad button bindings to `input_bind_all_defaults`
2. Or manually bind gamepad buttons in the test Lua fileLet me check if the action 'action' already has gamepad bindings from the manual setup in the Lua file.Looking at the test file, I see:```lua
input_bind('action', 'button:a')
input_bind('action', 'button:x')
```So pressing A or X on the gamepad should trigger the 'action' action, which will flash the ball. But there's no 'button_a' action created.

Let me update the test to use the raw gamepad button checking or add bindings for button_a, button_b, etc.Actually, `input_bind_all_defaults` should include gamepad buttons. Let me add that to the C code.

1494→// Bind all standard inputs to actions with matching names
  1495→// Keys become actions like 'a', 'space', 'left', etc.
  1496→// Mouse buttons become 'mouse_1', 'mouse_2', etc.
  1497→static void input_bind_all_defaults(void) {
  1498→    // Letters a-z
  1499→    for (char c = 'a'; c <= 'z'; c++) {
  1500→        char action_name[2] = {c, '\0'};
  1501→        char control_str[8];
  1502→        snprintf(control_str, sizeof(control_str), "key:%c", c);
  1503→        input_bind_control(action_name, control_str);
  1504→    }
  1505→
  1506→    // Numbers 0-9
  1507→    for (char c = '0'; c <= '9'; c++) {
  1508→        char action_name[2] = {c, '\0'};
  1509→        char control_str[8];
  1510→        snprintf(control_str, sizeof(control_str), "key:%c", c);
  1511→        input_bind_control(action_name, control_str);
  1512→    }
  1513→
  1514→    // Named keys
  1515→    static const char* named_keys[] = {
  1516→        "space", "enter", "escape", "backspace", "tab",
  1517→        "left", "right", "up", "down",
  1518→        "lshift", "rshift", "lctrl", "rctrl", "lalt", "ralt",
  1519→        "f1", "f2", "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", "f11", "f12",
  1520→        "insert", "delete", "home", "end", "pageup", "pagedown",
  1521→        NULL
  1522→    };
  1523→    for (int i = 0; named_keys[i] != NULL; i++) {
... [30 more lines]

I'll add gamepad button bindings to `input_bind_all_defaults`. I'll add actions like 'button_a', 'button_b', etc.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1525→        snprintf(control_str, sizeof(control_str), "key:%s", named_keys[i]);
  1526→        input_bind_control(named_keys[i], control_str);
  1527→    }
  1528→
  1529→    // Mouse buttons
  1530→    for (int i = 1; i <= MAX_MOUSE_BUTTONS; i++) {
  1531→        char action_name[16];
  1532→        char control_str[16];
  1533→        snprintf(action_name, sizeof(action_name), "mouse_%d", i);
  1534→        snprintf(control_str, sizeof(control_str), "mouse:%d", i);
  1535→        input_bind_control(action_name, control_str);
  1536→    }
  1537→
  1538→    // Gamepad buttons
  1539→    static const char* gamepad_buttons[] = {
  1540→        "a", "b", "x", "y",
  1541→        "back", "guide", "start",
  1542→        "leftstick", "rightstick",
  1543→        "leftshoulder", "rightshoulder",
  1544→        "dpup", "dpdown", "dpleft", "dpright",
  1545→        NULL
  1546→    };
  1547→    for (int i = 0; gamepad_buttons[i] != NULL; i++) {
  1548→        char action_name[32];
  1549→        char control_str[32];
  1550→        snprintf(action_name, sizeof(action_name), "button_%s", gamepad_buttons[i]);
  1551→        snprintf(control_str, sizeof(control_str), "button:%s", gamepad_buttons[i]);
  1552→        input_bind_control(action_name, control_str);
  1553→    }
... [5 more lines]

Good, now I also need to increase MAX_ACTIONS since we're adding more actions. Let me check the current value and increase it if needed.

824:#define MAX_ACTIONS 128
837:#define MAX_ACTIONS_PER_CHORD 4

128 should be enough. Let me count:

- 26 letters
- 10 numbers
- ~30 named keys
- 5 mouse buttons
- 15 gamepad buttons
= ~86 actions

That's under 128, so we're fine. Let me build and test.

anchor.c

src/anchor.c(620): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(614): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data

src/anchor.c(898): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1176): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1182): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1292): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1301): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1395): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1397): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(2022): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Build successful. Now the gamepad tests should work. The user can:- Move the ball with the left stick (via move_left/right/up/down bindings)- Press A, B, X, Y buttons and see messages- Pull triggers and see values

- See input type change from keyboard/mouse to gamepadLet me summarize what they should test.

The user wants to remove the mouse delta printing which is spamming the console. Let me find and remove it.

328-    -- Test mouse_delta (print when significant movement)
329-    local dx, dy = mouse_delta()
330-    if math.abs(dx) > 5 or math.abs(dy) > 5 then
331:        print("Mouse delta: " .. dx .. ", " .. dy)
332-    end
333-
334-    -- === Input type detection test ===

Let me remove this section.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   324→    if wheel_x ~= 0 then
   325→        print("Wheel X: " .. wheel_x)
   326→    end
   327→
   328→    -- === Input type detection test ===
   329→    local current_input_type = input_get_last_type()
   330→    if current_input_type ~= last_input_type then
   331→        print("Input type changed: " .. last_input_type .. " -> " .. current_input_type)
   332→        last_input_type = current_input_type

Done. The mouse delta printing has been removed.

The user wants to build the web version to test gamepad support there. Let me run the web build script.

Building with game folder: ../test
Build successful: build-web/anchor.html
To test: cd build-web && python -m http.server 8000
Then open: http://localhost:8000/anchor.html

Web build successful. The user can now test the gamepad in the browser.

The user confirmed gamepad works on web too. The console delay and trigger print issues they mentioned are likely just browser console buffering/timing issues, not actual input problems. They said the actual game behavior was correct.

Let me mark Step 10 as complete and move on to Step 11 (Rebinding capture).

- [completed] Step 1: Raw keyboard state

- [completed] Step 2: Mouse state
- [completed] Step 3: Basic action binding
- [completed] Step 4: Unbinding and bind_all
- [completed] Step 5: Axis helpers
- [completed] Step 6: Gamepad support
- [completed] Step 7: Chords
- [completed] Step 8: Sequences
- [completed] Step 9: Holds
- [completed] Step 10: Input type detection
- [in_progress] Step 11: Rebinding capture
- [pending] Step 12: Utility functions

Now let me check the implementation plan for Step 11 (Rebinding capture).

563-- [ ] Track last input type: `'keyboard'`, `'mouse'`, or `'gamepad'`
564-- [ ] Updated whenever any input is received
565-- [ ] `input_get_last_type()` — returns current type string
566-- [ ] Useful for UI prompt switching (show keyboard vs gamepad icons)
567-
568:**Step 11: Rebinding capture**
569-- [ ] Capture mode flag
570:- [ ] `input_start_capture()` — enter capture mode, suppress normal input processing
571-- [ ] While in capture mode: wait for any key/button/axis press
572-- [ ] Store captured control as string (e.g., `'key:w'`, `'button:a'`)
573:- [ ] `input_get_captured()` — returns control string if captured, nil otherwise
574-- [ ] `input_stop_capture()` — exit capture mode, clear captured value
575-
576-**Step 12: Utility**
577-- [ ] `input_any_pressed()` — true if any bound action was just pressed this frame
578-
--
617-
618--- Input type detection (for UI prompts)
619-local input_type = input_get_last_type()  -- 'keyboard', 'mouse', or 'gamepad'
620-
621--- Rebinding capture (for options menu)
622:input_start_capture()
623--- ... wait for user to press something ...
624:local control = input_get_captured()  -- 'key:w' or nil
625-if control then
626-    input_bind('jump', {control})
627-    input_stop_capture()
628-end
629-

Step 11 is about rebinding capture for options menus. I need to:

1. Add a capture mode flag
2. `input_start_capture()` - enter capture mode, suppress normal input
3. While in capture mode, wait for any key/button/axis press
4. Store captured control as string (e.g., 'key:w', 'button:a')
5. `input_get_captured()` - returns control string if captured, nil otherwise
6. `input_stop_capture()` - exit capture mode, clear captured value

Let me implement this. I'll need:

- A bool `capture_mode` flag
- A string to store the captured control (or NULL if none)
- Modify the event handling to capture inputs when in capture mode
- Lua bindings for the three functions

Let me start implementing.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   576→} InputType;
   577→
   578→static InputType last_input_type = INPUT_TYPE_KEYBOARD;
   579→
   580→static const char* input_type_to_string(InputType type) {
   581→    switch (type) {
   582→        case INPUT_TYPE_KEYBOARD: return "keyboard";
   583→        case INPUT_TYPE_MOUSE: return "mouse";
   584→        case INPUT_TYPE_GAMEPAD: return "gamepad";
   585→        default: return "keyboard";
   586→    }
   587→}
   588→
   589→// Rebinding capture mode
   590→static bool capture_mode = false;
   591→static char captured_control[64] = {0};  // Stores captured control string like "key:space"
   592→
   593→static void input_start_capture(void) {
   594→    capture_mode = true;
   595→    captured_control[0] = '\0';
   596→}
   597→
   598→static const char* input_get_captured(void) {
   599→    if (captured_control[0] != '\0') {
   600→        return captured_control;
   601→    }
   602→    return NULL;
   603→}
   604→
... [10 more lines]

Good. Now I need to modify the event handling to capture inputs when in capture mode. I need to find the keyboard and mouse event handling and add capture logic. Also need to handle gamepad button capture.

Let me modify the event handling code.

2990→    // Accumulate render lag, capped to prevent unbounded growth
  2991→    render_lag += dt;
  2992→    if (render_lag > RENDER_RATE * 2) {
  2993→        render_lag = RENDER_RATE * 2;
  2994→    }
  2995→
  2996→    // Process events every frame (not tied to fixed timestep)
  2997→    SDL_Event event;
  2998→    while (SDL_PollEvent(&event)) {
  2999→        if (event.type == SDL_QUIT) {
  3000→            running = false;
  3001→        }
  3002→        // Track keyboard state
  3003→        if (event.type == SDL_KEYDOWN && !event.key.repeat) {
  3004→            last_input_type = INPUT_TYPE_KEYBOARD;
  3005→            SDL_Scancode sc = event.key.keysym.scancode;
  3006→            if (sc < SDL_NUM_SCANCODES) {
  3007→                keys_current[sc] = true;
  3008→            }
  3009→            // Built-in key handling
  3010→            if (event.key.keysym.sym == SDLK_ESCAPE) {
  3011→                running = false;
  3012→            }
  3013→            #ifndef __EMSCRIPTEN__
  3014→            // Fullscreen toggle only on desktop
  3015→            if (event.key.keysym.sym == SDLK_F11 ||
  3016→                (event.key.keysym.sym == SDLK_RETURN && (event.key.keysym.mod & KMOD_ALT))) {
  3017→                Uint32 flags = SDL_GetWindowFlags(window);
  3018→                SDL_SetWindowFullscreen(window, (flags & SDL_WINDOW_FULLSCREEN_DESKTOP) ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
  3019→            }
... [30 more lines]

I need to add capture logic for keyboard, mouse, and gamepad inputs. I'll need to:

1. For keyboard: capture the key name when a key is pressed in capture mode
2. For mouse buttons: capture "mouse:N" when a button is pressed
3. For gamepad buttons: capture "button:name" when a button is pressed
4. For gamepad axes: capture "axis:name+" or "axis:name-" when an axis is pushed significantly

I'll need a helper function to convert SDL_Scancode to a key name string for capture.

Actually, I already have `scancode_to_name` earlier in the code. Let me check if it exists.

No matches found

I don't have a scancode to name function. I'll need to create one or use SDL_GetScancodeName. Actually, SDL_GetScancodeName exists but returns names like "Space" not "space". Let me create a helper that converts scancode to our format.

Actually, I can use SDL_GetKeyName or SDL_GetScancodeName and then lowercase it and handle special cases. Or I can create a reverse mapping.

For simplicity, let me use SDL_GetScancodeName and convert to lowercase. It returns strings like "A", "Space", "Left Shift", etc. I'll need to handle multi-word names.

Actually, let me look at what key_name_to_scancode returns and create a reverse. But that's a lot of code. Let me use a simpler approach - I'll iterate through known key names and check if any matches the scancode.

Actually, the simplest approach is to use SDL_GetScancodeName and then convert to lowercase and replace spaces with nothing or handle known mappings.

Let me add a helper function that does this conversion.

720→    if (strcmp(name, "home") == 0) return SDL_SCANCODE_HOME;
   721→    if (strcmp(name, "end") == 0) return SDL_SCANCODE_END;
   722→    if (strcmp(name, "pageup") == 0) return SDL_SCANCODE_PAGEUP;
   723→    if (strcmp(name, "pagedown") == 0) return SDL_SCANCODE_PAGEDOWN;
   724→
   725→    // Punctuation and symbols
   726→    if (strcmp(name, "minus") == 0 || strcmp(name, "-") == 0) return SDL_SCANCODE_MINUS;
   727→    if (strcmp(name, "equals") == 0 || strcmp(name, "=") == 0) return SDL_SCANCODE_EQUALS;
   728→    if (strcmp(name, "leftbracket") == 0 || strcmp(name, "[") == 0) return SDL_SCANCODE_LEFTBRACKET;
   729→    if (strcmp(name, "rightbracket") == 0 || strcmp(name, "]") == 0) return SDL_SCANCODE_RIGHTBRACKET;
   730→    if (strcmp(name, "backslash") == 0 || strcmp(name, "\\") == 0) return SDL_SCANCODE_BACKSLASH;
   731→    if (strcmp(name, "semicolon") == 0 || strcmp(name, ";") == 0) return SDL_SCANCODE_SEMICOLON;
   732→    if (strcmp(name, "apostrophe") == 0 || strcmp(name, "'") == 0) return SDL_SCANCODE_APOSTROPHE;
   733→    if (strcmp(name, "grave") == 0 || strcmp(name, "`") == 0) return SDL_SCANCODE_GRAVE;
   734→    if (strcmp(name, "comma") == 0 || strcmp(name, ",") == 0) return SDL_SCANCODE_COMMA;
   735→    if (strcmp(name, "period") == 0 || strcmp(name, ".") == 0) return SDL_SCANCODE_PERIOD;
   736→    if (strcmp(name, "slash") == 0 || strcmp(name, "/") == 0) return SDL_SCANCODE_SLASH;
   737→
   738→    // Numpad
   739→    if (strcmp(name, "kp0") == 0) return SDL_SCANCODE_KP_0;
   740→    if (strcmp(name, "kp1") == 0) return SDL_SCANCODE_KP_1;
   741→    if (strcmp(name, "kp2") == 0) return SDL_SCANCODE_KP_2;
   742→    if (strcmp(name, "kp3") == 0) return SDL_SCANCODE_KP_3;
   743→    if (strcmp(name, "kp4") == 0) return SDL_SCANCODE_KP_4;
   744→    if (strcmp(name, "kp5") == 0) return SDL_SCANCODE_KP_5;
   745→    if (strcmp(name, "kp6") == 0) return SDL_SCANCODE_KP_6;
   746→    if (strcmp(name, "kp7") == 0) return SDL_SCANCODE_KP_7;
   747→    if (strcmp(name, "kp8") == 0) return SDL_SCANCODE_KP_8;
   748→    if (strcmp(name, "kp9") == 0) return SDL_SCANCODE_KP_9;
   749→    if (strcmp(name, "kpenter") == 0) return SDL_SCANCODE_KP_ENTER;

I'll add a `scancode_to_key_name` function that reverses the mapping. Let me add it after `key_name_to_scancode`.

755→
   756→    return SDL_SCANCODE_UNKNOWN;
   757→}
   758→
   759→// Copy current input state to previous (called at end of physics frame)
   760→static void input_post_update(void) {
   761→    memcpy(keys_previous, keys_current, sizeof(keys_previous));
   762→    memcpy(mouse_buttons_previous, mouse_buttons_current, sizeof(mouse_buttons_previous));
   763→    memcpy(gamepad_buttons_previous, gamepad_buttons_current, sizeof(gamepad_buttons_previous));
   764→    memcpy(gamepad_axes_previous, gamepad_axes, sizeof(gamepad_axes_previous));
   765→    // Reset per-frame deltas
   766→    mouse_dx = 0;
   767→    mouse_dy = 0;
   768→    mouse_wheel_x = 0;
   769→    mouse_wheel_y = 0;
   770→}
   771→
   772→// Update gamepad state (call once per frame before input processing)
   773→static void gamepad_update(void) {
   774→    if (!gamepad) return;

I'll add a scancode_to_key_name function after key_name_to_scancode. This will convert a scancode back to the key name string we use. Also need a gamepad button to name function.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   752→    if (strcmp(name, "kpmultiply") == 0) return SDL_SCANCODE_KP_MULTIPLY;
   753→    if (strcmp(name, "kpdivide") == 0) return SDL_SCANCODE_KP_DIVIDE;
   754→    if (strcmp(name, "kpperiod") == 0) return SDL_SCANCODE_KP_PERIOD;
   755→
   756→    return SDL_SCANCODE_UNKNOWN;
   757→}
   758→
   759→// Convert scancode to key name string (reverse of key_name_to_scancode)
   760→// Returns NULL if unknown
   761→static const char* scancode_to_key_name(SDL_Scancode sc) {
   762→    // Letters
   763→    if (sc >= SDL_SCANCODE_A && sc <= SDL_SCANCODE_Z) {
   764→        static char letter[2] = {0};
   765→        letter[0] = 'a' + (sc - SDL_SCANCODE_A);
   766→        return letter;
   767→    }
   768→    // Numbers
   769→    if (sc >= SDL_SCANCODE_1 && sc <= SDL_SCANCODE_9) {
   770→        static char digit[2] = {0};
   771→        digit[0] = '1' + (sc - SDL_SCANCODE_1);
   772→        return digit;
   773→    }
   774→    if (sc == SDL_SCANCODE_0) return "0";
   775→
   776→    // Named keys
   777→    switch (sc) {
   778→        case SDL_SCANCODE_SPACE: return "space";
   779→        case SDL_SCANCODE_RETURN: return "enter";
   780→        case SDL_SCANCODE_ESCAPE: return "escape";
... [74 more lines]

Good. Now I need to modify the event handling to capture inputs when in capture mode. Let me update the keyboard, mouse, and gamepad handling.

3090→        if (event.type == SDL_QUIT) {
  3091→            running = false;
  3092→        }
  3093→        // Track keyboard state
  3094→        if (event.type == SDL_KEYDOWN && !event.key.repeat) {
  3095→            last_input_type = INPUT_TYPE_KEYBOARD;
  3096→            SDL_Scancode sc = event.key.keysym.scancode;
  3097→            if (sc < SDL_NUM_SCANCODES) {
  3098→                keys_current[sc] = true;
  3099→            }
  3100→            // Built-in key handling
  3101→            if (event.key.keysym.sym == SDLK_ESCAPE) {
  3102→                running = false;
  3103→            }
  3104→            #ifndef __EMSCRIPTEN__
  3105→            // Fullscreen toggle only on desktop
  3106→            if (event.key.keysym.sym == SDLK_F11 ||
  3107→                (event.key.keysym.sym == SDLK_RETURN && (event.key.keysym.mod & KMOD_ALT))) {
  3108→                Uint32 flags = SDL_GetWindowFlags(window);
  3109→                SDL_SetWindowFullscreen(window, (flags & SDL_WINDOW_FULLSCREEN_DESKTOP) ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
  3110→            }
  3111→            #endif
  3112→        }
  3113→        if (event.type == SDL_KEYUP) {
  3114→            SDL_Scancode sc = event.key.keysym.scancode;
  3115→            if (sc < SDL_NUM_SCANCODES) {
  3116→                keys_current[sc] = false;
  3117→            }
  3118→        }
  3119→        // Track mouse motion
... [20 more lines]

Let me update the keyboard and mouse handling to capture inputs when in capture mode.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  3089→    while (SDL_PollEvent(&event)) {
  3090→        if (event.type == SDL_QUIT) {
  3091→            running = false;
  3092→        }
  3093→        // Track keyboard state
  3094→        if (event.type == SDL_KEYDOWN && !event.key.repeat) {
  3095→            last_input_type = INPUT_TYPE_KEYBOARD;
  3096→            SDL_Scancode sc = event.key.keysym.scancode;
  3097→            if (sc < SDL_NUM_SCANCODES) {
  3098→                keys_current[sc] = true;
  3099→            }
  3100→            // Capture mode: capture the key
  3101→            if (capture_mode && captured_control[0] == '\0') {
  3102→                const char* key_name = scancode_to_key_name(sc);
  3103→                if (key_name) {
  3104→                    snprintf(captured_control, sizeof(captured_control), "key:%s", key_name);
  3105→                }
  3106→            }
  3107→            // Built-in key handling (skip if in capture mode)
  3108→            if (!capture_mode) {
  3109→                if (event.key.keysym.sym == SDLK_ESCAPE) {
  3110→                    running = false;
  3111→                }
  3112→            }
  3113→            #ifndef __EMSCRIPTEN__
  3114→            // Fullscreen toggle only on desktop
  3115→            if (event.key.keysym.sym == SDLK_F11 ||
  3116→                (event.key.keysym.sym == SDLK_RETURN && (event.key.keysym.mod & KMOD_ALT))) {
  3117→                Uint32 flags = SDL_GetWindowFlags(window);
... [8 more lines]

Good. Now let me update the mouse button handling to capture mouse buttons.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  3132→            mouse_y = event.motion.y;
  3133→            mouse_dx += event.motion.xrel;
  3134→            mouse_dy += event.motion.yrel;
  3135→        }
  3136→        // Track mouse buttons
  3137→        if (event.type == SDL_MOUSEBUTTONDOWN) {
  3138→            last_input_type = INPUT_TYPE_MOUSE;
  3139→            int btn = event.button.button - 1;  // SDL buttons are 1-indexed
  3140→            if (btn >= 0 && btn < MAX_MOUSE_BUTTONS) {
  3141→                mouse_buttons_current[btn] = true;
  3142→            }
  3143→            // Capture mode: capture the mouse button
  3144→            if (capture_mode && captured_control[0] == '\0') {
  3145→                snprintf(captured_control, sizeof(captured_control), "mouse:%d", event.button.button);
  3146→            }
  3147→        }
  3148→        if (event.type == SDL_MOUSEBUTTONUP) {
  3149→            int btn = event.button.button - 1;
  3150→            if (btn >= 0 && btn < MAX_MOUSE_BUTTONS) {
  3151→                mouse_buttons_current[btn] = false;

Good. Now I need to update gamepad button and axis capture in gamepad_update.

858→    mouse_dy = 0;
   859→    mouse_wheel_x = 0;
   860→    mouse_wheel_y = 0;
   861→}
   862→
   863→// Update gamepad state (call once per frame before input processing)
   864→static void gamepad_update(void) {
   865→    if (!gamepad) return;
   866→
   867→    // Update buttons
   868→    for (int i = 0; i < SDL_CONTROLLER_BUTTON_MAX; i++) {
   869→        bool was_down = gamepad_buttons_current[i];
   870→        gamepad_buttons_current[i] = SDL_GameControllerGetButton(gamepad, (SDL_GameControllerButton)i);
   871→        // Detect button press for input type tracking
   872→        if (gamepad_buttons_current[i] && !was_down) {
   873→            last_input_type = INPUT_TYPE_GAMEPAD;
   874→        }
   875→    }
   876→
   877→    // Update axes (normalize from -32768..32767 to -1..1)
   878→    for (int i = 0; i < SDL_CONTROLLER_AXIS_MAX; i++) {
   879→        float prev = gamepad_axes[i];
   880→        Sint16 raw = SDL_GameControllerGetAxis(gamepad, (SDL_GameControllerAxis)i);
   881→        gamepad_axes[i] = raw / 32767.0f;
   882→        // Clamp to -1..1 (raw -32768 would give slightly more than -1)
   883→        if (gamepad_axes[i] < -1.0f) gamepad_axes[i] = -1.0f;
   884→        // Detect significant axis movement for input type tracking
   885→        if (fabsf(gamepad_axes[i]) > 0.5f && fabsf(prev) <= 0.5f) {
   886→            last_input_type = INPUT_TYPE_GAMEPAD;
   887→        }
... [5 more lines]

Let me update gamepad_update to capture button and axis inputs when in capture mode.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   859→    mouse_wheel_x = 0;
   860→    mouse_wheel_y = 0;
   861→}
   862→
   863→// Update gamepad state (call once per frame before input processing)
   864→static void gamepad_update(void) {
   865→    if (!gamepad) return;
   866→
   867→    // Update buttons
   868→    for (int i = 0; i < SDL_CONTROLLER_BUTTON_MAX; i++) {
   869→        bool was_down = gamepad_buttons_current[i];
   870→        gamepad_buttons_current[i] = SDL_GameControllerGetButton(gamepad, (SDL_GameControllerButton)i);
   871→        // Detect button press for input type tracking and capture
   872→        if (gamepad_buttons_current[i] && !was_down) {
   873→            last_input_type = INPUT_TYPE_GAMEPAD;
   874→            // Capture mode: capture the button
   875→            if (capture_mode && captured_control[0] == '\0') {
   876→                const char* btn_name = gamepad_button_to_name((SDL_GameControllerButton)i);
   877→                if (btn_name) {
   878→                    snprintf(captured_control, sizeof(captured_control), "button:%s", btn_name);
   879→                }
   880→            }
   881→        }
   882→    }
   883→
   884→    // Update axes (normalize from -32768..32767 to -1..1)
   885→    for (int i = 0; i < SDL_CONTROLLER_AXIS_MAX; i++) {
   886→        float prev = gamepad_axes[i];
   887→        Sint16 raw = SDL_GameControllerGetAxis(gamepad, (SDL_GameControllerAxis)i);
... [21 more lines]

Good. Now I need to add the Lua bindings for input_start_capture, input_get_captured, and input_stop_capture.

2587-// input_get_hold_duration(name) - returns how long the source action has been held
2588-static int l_input_get_hold_duration(lua_State* L) {
2589-    const char* name = luaL_checkstring(L, 1);
2590-    lua_pushnumber(L, input_get_hold_duration(name));
2591-    return 1;
2592-}
2593-
2594-// input_get_last_type() - returns 'keyboard', 'mouse', or 'gamepad'
2595:static int l_input_get_last_type(lua_State* L) {
2596-    lua_pushstring(L, input_type_to_string(last_input_type));
2597-    return 1;
2598-}
2599-
2600-static int l_input_unbind(lua_State* L) {
2601-    const char* action = luaL_checkstring(L, 1);
2602-    const char* control = luaL_checkstring(L, 2);
2603-    lua_pushboolean(L, input_unbind_control(action, control));
--
2706-    lua_register(L, "mouse_is_released", l_mouse_is_released);
2707-    lua_register(L, "mouse_wheel", l_mouse_wheel);
2708-    // Input - Action binding
2709-    lua_register(L, "input_bind", l_input_bind);
2710-    lua_register(L, "input_bind_chord", l_input_bind_chord);
2711-    lua_register(L, "input_bind_sequence", l_input_bind_sequence);
2712-    lua_register(L, "input_bind_hold", l_input_bind_hold);
2713-    lua_register(L, "input_get_hold_duration", l_input_get_hold_duration);
2714:    lua_register(L, "input_get_last_type", l_input_get_last_type);
2715-    lua_register(L, "input_unbind", l_input_unbind);
2716-    lua_register(L, "input_unbind_all", l_input_unbind_all);
2717-    lua_register(L, "input_bind_all", l_input_bind_all);
... [5 more lines]

I'll add the capture functions after l_input_get_last_type.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2590→    lua_pushnumber(L, input_get_hold_duration(name));
  2591→    return 1;
  2592→}
  2593→
  2594→// input_get_last_type() - returns 'keyboard', 'mouse', or 'gamepad'
  2595→static int l_input_get_last_type(lua_State* L) {
  2596→    lua_pushstring(L, input_type_to_string(last_input_type));
  2597→    return 1;
  2598→}
  2599→
  2600→// Capture mode for rebinding
  2601→static int l_input_start_capture(lua_State* L) {
  2602→    (void)L;
  2603→    input_start_capture();
  2604→    return 0;
  2605→}
  2606→
  2607→static int l_input_get_captured(lua_State* L) {
  2608→    const char* captured = input_get_captured();
  2609→    if (captured) {
  2610→        lua_pushstring(L, captured);
  2611→    } else {
  2612→        lua_pushnil(L);
  2613→    }
  2614→    return 1;
  2615→}
  2616→
  2617→static int l_input_stop_capture(lua_State* L) {
  2618→    (void)L;
... [9 more lines]

Good. Now let me register these functions.

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  2732→    lua_register(L, "input_bind", l_input_bind);
  2733→    lua_register(L, "input_bind_chord", l_input_bind_chord);
  2734→    lua_register(L, "input_bind_sequence", l_input_bind_sequence);
  2735→    lua_register(L, "input_bind_hold", l_input_bind_hold);
  2736→    lua_register(L, "input_get_hold_duration", l_input_get_hold_duration);
  2737→    lua_register(L, "input_get_last_type", l_input_get_last_type);
  2738→    lua_register(L, "input_start_capture", l_input_start_capture);
  2739→    lua_register(L, "input_get_captured", l_input_get_captured);
  2740→    lua_register(L, "input_stop_capture", l_input_stop_capture);
  2741→    lua_register(L, "input_unbind", l_input_unbind);
  2742→    lua_register(L, "input_unbind_all", l_input_unbind_all);
  2743→    lua_register(L, "input_bind_all", l_input_bind_all);
  2744→    lua_register(L, "input_get_axis", l_input_get_axis);
  2745→    lua_register(L, "input_get_vector", l_input_get_vector);

Good. Let me build and then update the test file.

anchor.c

src/anchor.c(641): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(635): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data

src/anchor.c(1025): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1303): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1309): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1419): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1428): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1522): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(1524): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

src/anchor.c(2149): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.

gl.c

Generating Code...

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library

Build successful: build/anchor.exe

Build successful. Now let me update the test file to test capture mode.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→print("main.lua loaded - Input Test (Step 11: Rebinding Capture)")
     2→
     3→set_shape_filter("rough")
     4→
     5→local screen_w, screen_h = 480, 270

Now let me add a test for capture mode. I'll use the C key to toggle capture mode on/off.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   119→local star_spin_speed = 3.0
   120→
   121→local game_time = 0
   122→
   123→-- Input test state
   124→local move_speed = 150
   125→local pressed_flash = 0  -- Flash timer when action is triggered
   126→local cursor_radius = 8  -- Cursor size (affected by scroll wheel)
   127→local last_input_type = "keyboard"  -- Track for change detection
   128→local capture_active = false  -- Track capture mode state
   129→
   130→-- Helper to draw objects only (no background) - for outline layer
   131→local function draw_objects(layer)
   132→    -- Draw ball (flashes white when action is triggered)

Now let me add the capture test in the update function. I'll add it after the input type detection test.

328→
   329→    -- === Input type detection test ===
   330→    local current_input_type = input_get_last_type()
   331→    if current_input_type ~= last_input_type then
   332→        print("Input type changed: " .. last_input_type .. " -> " .. current_input_type)
   333→        last_input_type = current_input_type
   334→    end
   335→
   336→    -- Decay flash timers
   337→    if pressed_flash > 0 then
   338→        pressed_flash = pressed_flash - dt
   339→    end
   340→
   341→    -- === Update ball (no auto-movement, just keep in bounds) ===
   342→    ball.hue = (ball.hue + ball.hue_speed * dt) % 360
   343→
   344→    -- Keep ball in bounds
   345→    if ball.x - ball.radius < 0 then ball.x = ball.radius end
   346→    if ball.x + ball.radius > screen_w then ball.x = screen_w - ball.radius end
   347→    if ball.y - ball.radius < 0 then ball.y = ball.radius end

Let me add the capture test after the input type detection test.

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   325→    if wheel_x ~= 0 then
   326→        print("Wheel X: " .. wheel_x)
   327→    end
   328→
   329→    -- === Input type detection test ===
   330→    local current_input_type = input_get_last_type()
   331→    if current_input_type ~= last_input_type then
   332→        print("Input type changed: " .. last_input_type .. " -> " .. current_input_type)
   333→        last_input_type = current_input_type
   334→    end
   335→
   336→    -- === Capture mode test (press C to start, then press any key/button) ===
   337→    if is_pressed('c') and not capture_active then
   338→        input_start_capture()
   339→        capture_active = true
   340→        print("CAPTURE MODE: Press any key, mouse button, or gamepad button...")
   341→    end
   342→
   343→    if capture_active then
   344→        local captured = input_get_captured()
   345→        if captured then
   346→            print("CAPTURED: " .. captured)
   347→            input_stop_capture()
   348→            capture_active = false
   349→        end
   350→    end
   351→
   352→    -- Decay flash timers
   353→    if pressed_flash > 0 then
... [3 more lines]

Good. The test is set up. Now the user can:

1. Press C to start capture mode2. Press any key, mouse button, or gamepad button3. See the captured control string printedStep 11 is complete. Let me summarize.

The user wants a summary before auto-compaction. Let me summarize what's been done and what's left.