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]

1→# Anchor Phase 2
     2→
     3→## Summary
     4→
     5→This session implemented Phase 2 of the Anchor engine: the Emscripten/WebGL web build. The same C code now compiles and runs identically in the browser.
     6→
     7→**Emscripten Setup:**
     8→- Installed Emscripten SDK to `C:\emsdk`
     9→- Encountered Windows Python app execution aliases blocking `python` command - disabled via Settings
    10→- Git Bash doesn't auto-execute `.bat` files, so `emsdk_env.sh` wasn't adding emcc to PATH properly
    11→- Fixed by adding `source /c/emsdk/emsdk_env.sh` and explicit aliases to `~/.bashrc`
    12→- Verified new terminals have `emcc` available automatically
    13→
    14→**Platform Abstraction in anchor.c:**
    15→- Added `#ifdef __EMSCRIPTEN__` conditional compilation throughout
    16→- Web uses `<GLES3/gl3.h>` instead of glad for OpenGL loading
    17→- Requests OpenGL ES 3.0 context on web (`SDL_GL_CONTEXT_PROFILE_ES`)
    18→- Refactored blocking `while(running)` loop into `main_loop_iteration()` function
    19→- Web uses `emscripten_set_main_loop()` which yields to browser each frame
    20→
    21→**Unified Shader System:**
    22→- Initially had duplicated shader sources for each platform (GLSL 330 core vs 300 es)
    23→- Discussed why desktop OpenGL and WebGL ES are different dialects - can't use `#version 300 es` on desktop
    24→- Refactored to single shader sources without version lines
    25→- `compile_shader()` auto-prepends platform-specific header (version + precision qualifiers for ES)
    26→- Same approach will work for user-authored shaders loaded at runtime
    27→
    28→**HTML Shell and CSS:**
    29→- Created `shell.html` template with canvas, letterboxing CSS, keyboard capture
    30→- Fixed white outline artifact between letterbox and canvas (added `border: none`, `outline: none`, `background: #000`)
... [1413 more lines]

1→# Anchor Phase 9
     2→
     3→## Summary
     4→
     5→Implemented Phase 9 (Text Rendering) of the Anchor engine — font loading, metrics, and glyph rendering on the C side, with FreeType for proper pixel font support.
     6→
     7→**API Design Work:**
     8→
     9→The session began with extensive API design before implementation:
    10→- Analyzed C vs YueScript separation — C handles font loading, metrics, and glyph drawing; YueScript handles tag parsing, layout, and per-character effects
    11→- Layout stays in YueScript because it's intertwined with tag parsing (the `|` character triggers line breaks, spaces inside tagged regions have different wrapping rules, tag delimiters get stripped)
    12→- Researched rich text systems across 19 game engines: LÖVE, Unity, Godot, Construct 3, HaxeFlixel, Heaps, Ceramic, Cute Framework, Phaser, p5play, PixiJS, Defold, KaboomJS, GameMaker, MonoGame, LÖVR, Ren'Py, RPG Maker, GDevelop
    13→- Key findings: tag syntax varies widely (HTML-style, BBCode, curly braces, markdown-style, escape codes), effect application models differ (per-char callback vs per-char objects vs custom effect classes), word-level grouping and named regions are useful patterns
    14→- Created `reference/phase-9-text-analysis.md` with full research and recommendations
    15→- Designed imaginary API with 10 built-in effects (wave, shake, rainbow, typewriter, fade, pulse, jitter, swing, scramble, bounce) — this exercise helped define what C needs to expose
    16→- Rewrote API in YueScript following Anchor conventions: `^` for properties, `>>` and `<<` for tree flow, multiple `()` parentheses for multiple effects on same text span
    17→
    18→**What Was Built:**
    19→- `font_load(name, path, size)` — Load TTF via FreeType, bake 512×512 RGBA glyph atlas
    20→- `font_unload(name)` — Free font resources
    21→- Font registry by name (like layers), max 16 fonts
    22→- `font_get_height(font_name)` — Returns line height
    23→- `font_get_text_width(font_name, text)` — Returns pixel width of UTF-8 string
    24→- `font_get_char_width(font_name, codepoint)` — Returns advance width for single codepoint
    25→- `font_get_glyph_metrics(font_name, codepoint)` — Returns x0, y0, x1, y1, advance
    26→- `layer_draw_text(layer, text, font_name, x, y, color)` — Draw UTF-8 string
    27→- `layer_draw_glyph(layer, codepoint, font_name, x, y, r, sx, sy, color)` — Draw single glyph with transform
    28→
    29→**Filter Mode Changes:**
    30→- Renamed `set_shape_filter` → `set_filter_mode` (global setting for shapes and fonts)
... [120 more lines]

E:\a327ex\Anchor\reference\super emoji box\lun\class.lua
E:\a327ex\Anchor\reference\super emoji box\lun\joint.lua
E:\a327ex\Anchor\reference\super emoji box\lun\music_player.lua
E:\a327ex\Anchor\reference\super emoji box\lun\shake.lua
E:\a327ex\Anchor\reference\super emoji box\lun\spring.lua
E:\a327ex\Anchor\reference\super emoji box\lun\stats.lua
E:\a327ex\Anchor\reference\super emoji box\lun\string.lua
E:\a327ex\Anchor\reference\super emoji box\lun\ui.lua
E:\a327ex\Anchor\reference\super emoji box\lun\mover.lua
E:\a327ex\Anchor\reference\super emoji box\lun\sound.lua
E:\a327ex\Anchor\reference\super emoji box\lun\camera.lua
E:\a327ex\Anchor\reference\super emoji box\lun\random.lua
E:\a327ex\Anchor\reference\super emoji box\lun\color.lua
E:\a327ex\Anchor\reference\super emoji box\lun\input.lua
E:\a327ex\Anchor\reference\super emoji box\lun\mouse_hover.lua
E:\a327ex\Anchor\reference\super emoji box\lun\grid.lua
E:\a327ex\Anchor\reference\super emoji box\lun\text.lua
E:\a327ex\Anchor\reference\super emoji box\lun\animation.lua
E:\a327ex\Anchor\reference\super emoji box\lun\physics_world.lua
E:\a327ex\Anchor\reference\super emoji box\lun\layer.lua
E:\a327ex\Anchor\reference\super emoji box\lun\tiled_map.lua
E:\a327ex\Anchor\reference\super emoji box\lun\array.lua
E:\a327ex\Anchor\reference\super emoji box\lun\lun.lua
E:\a327ex\Anchor\reference\super emoji box\lun\sensor.lua
E:\a327ex\Anchor\reference\super emoji box\lun\sensor_world.lua
E:\a327ex\Anchor\reference\super emoji box\lun\timer.lua
E:\a327ex\Anchor\reference\super emoji box\lun\math.lua
E:\a327ex\Anchor\reference\super emoji box\lun\object.lua
E:\a327ex\Anchor\reference\super emoji box\lun\collider.lua

E:\a327ex\Anchor\website\logs\anchor-review-1.md

1→# Anchor Review 1
     2→
     3→## Summary
     4→
     5→Comprehensive review of the Anchor game engine project, covering implementation status, code quality, and future phase planning.
     6→
     7→**Project Review:**
     8→- Read and analyzed core files: anchor.c, ANCHOR.md, ANCHOR_IMPLEMENTATION_PLAN.md, SHAPES_PLAN.md, frame-timing-analysis.md, pixel-perfect-research.md
     9→- Assessed Phases 1-3 as complete: window/OpenGL/Lua foundation, Emscripten web build, deferred rendering with SDF uber-shader
    10→- Identified strengths: UV-space SDF approach, thorough frame timing work, documented experimentation, clean C code
    11→- Flagged concerns: command queue realloc during gameplay, silent transform stack overflow, missing timing_resync mechanism
    12→
    13→**Code Fixes (anchor.c):**
    14→- Changed command queue from dynamic (realloc) to fixed size: MAX_COMMAND_CAPACITY = 16384 commands per layer
    15→- Added explicit Lua error for transform stack overflow (was just a warning)
    16→- Implemented timing_resync() function to reset physics/render lag accumulators
    17→- Auto-call timing_resync on SDL_WINDOWEVENT_FOCUS_GAINED for smooth resume
    18→- Padded DrawCommand struct to exactly 64 bytes with explicit alignment and static_assert
    19→- Added coordinate conventions documentation (rectangle=top-left, circle/sprite=center)
    20→- Fixed MSVC build: used static_assert instead of _Static_assert with #ifdef conditional
    21→
    22→**Phase Review (AskUserQuestion sessions):**
    23→- Phase 4 (Effects): Shader hot-reload not needed, restart acceptable
    24→- Phase 5 (Input): Runtime rebindable for options menus
    25→- Phase 7 (Physics): Configurable pixel-to-meter scale, collision-first (joints later), string-based tags
    26→- Phase 8 (Random): Deterministic replay support required, save/restore RNG state
    27→- Phase 9 (Text): Both bitmap (pixel-perfect) and TTF (scalable) fonts, full stack trace on errors
    28→- Phase 10 (Object System): Creation order for siblings, timer callbacks receive only self
    29→- Phase 11 (Distribution): Single executable with embedded assets, web polish deferred
    30→
... [170 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]

500→#define FONT_FIRST_CHAR 32
   501→#define FONT_NUM_CHARS 96
   502→
   503→typedef struct {
   504→    float x0, y0, x1, y1;  // Bounding box in pixels (relative to baseline)
   505→    float u0, v0, u1, v1;  // UV coordinates in atlas
   506→    float advance;          // Horizontal advance
   507→} GlyphInfo;
   508→
   509→typedef struct {
   510→    char name[MAX_FONT_NAME];
   511→    GLuint atlas_texture;
   512→    int atlas_width;
   513→    int atlas_height;
   514→    float size;             // Font size in pixels
   515→    float ascent;           // Distance from baseline to top
   516→    float descent;          // Distance from baseline to bottom (negative)
   517→    float line_height;      // Recommended line spacing
   518→    GlyphInfo glyphs[FONT_NUM_CHARS];  // ASCII 32-127
   519→    int filter;             // Filter mode font was loaded with (FILTER_SMOOTH or FILTER_ROUGH)
   520→} Font;
   521→
   522→// Global FreeType library
   523→static FT_Library ft_library = NULL;
   524→
   525→#define MAX_FONTS 16
   526→static Font* font_registry[MAX_FONTS];
   527→static int font_count = 0;
   528→
   529→// UTF-8 decoding helper - returns codepoint and advances pointer
... [470 more lines]

1000→        ma_engine_start(&audio_engine);
  1001→        audio_needs_unlock = false;
  1002→        printf("Audio context unlocked\n");
  1003→    }
  1004→}
  1005→#endif
  1006→
  1007→// Create a layer with FBO at specified resolution
  1008→static Layer* layer_create(int width, int height) {
  1009→    Layer* layer = (Layer*)calloc(1, sizeof(Layer));
  1010→    if (!layer) return NULL;
  1011→
  1012→    layer->width = width;
  1013→    layer->height = height;
  1014→
  1015→    // Initialize transform stack with identity matrix at depth 0
  1016→    layer->transform_depth = 0;
  1017→    float* m = layer->transform_stack;
  1018→    m[0] = 1.0f; m[1] = 0.0f; m[2] = 0.0f;  // row 0
  1019→    m[3] = 0.0f; m[4] = 1.0f; m[5] = 0.0f;  // row 1
  1020→    m[6] = 0.0f; m[7] = 0.0f; m[8] = 1.0f;  // row 2
  1021→
  1022→    // Initialize command queue (fixed size, never grows)
  1023→    layer->commands = (DrawCommand*)malloc(MAX_COMMAND_CAPACITY * sizeof(DrawCommand));
  1024→    if (!layer->commands) {
  1025→        free(layer);
  1026→        return NULL;
  1027→    }
  1028→    layer->command_count = 0;
  1029→    layer->command_capacity = MAX_COMMAND_CAPACITY;
... [470 more lines]

1500→    INPUT_TYPE_MOUSE,
  1501→    INPUT_TYPE_GAMEPAD,
  1502→} InputType;
  1503→
  1504→static InputType last_input_type = INPUT_TYPE_KEYBOARD;
  1505→
  1506→static const char* input_type_to_string(InputType type) {
  1507→    switch (type) {
  1508→        case INPUT_TYPE_KEYBOARD: return "keyboard";
  1509→        case INPUT_TYPE_MOUSE: return "mouse";
  1510→        case INPUT_TYPE_GAMEPAD: return "gamepad";
  1511→        default: return "keyboard";
  1512→    }
  1513→}
  1514→
  1515→// Rebinding capture mode
  1516→static bool capture_mode = false;
  1517→static char captured_control[64] = {0};  // Stores captured control string like "key:space"
  1518→
  1519→static void input_start_capture(void) {
  1520→    capture_mode = true;
  1521→    captured_control[0] = '\0';
  1522→}
  1523→
  1524→static const char* input_get_captured(void) {
  1525→    if (captured_control[0] != '\0') {
  1526→        return captured_control;
  1527→    }
  1528→    return NULL;
  1529→}
... [470 more lines]

2000→    else if (type_len == 4 && strncmp(str, "axis", 4) == 0) {
  2001→        ctrl->type = CONTROL_GAMEPAD_AXIS;
  2002→        int axis_info = gamepad_axis_from_name(value);
  2003→        if (axis_info < 0) return false;
  2004→        ctrl->code = axis_info & 0xFF;        // Axis index
  2005→        ctrl->sign = (axis_info >> 8) & 0xFF; // Sign (0=full, 1=positive, -1=negative as 0xFF)
  2006→        if (ctrl->sign == 0xFF) ctrl->sign = -1;  // Fix sign extension
  2007→        return true;
  2008→    }
  2009→
  2010→    return false;
  2011→}
  2012→
  2013→// Bind a control to an action
  2014→static bool input_bind_control(const char* action_name, const char* control_str) {
  2015→    Action* action = action_get_or_create(action_name);
  2016→    if (!action) return false;
  2017→
  2018→    Control ctrl;
  2019→    if (!parse_control_string(control_str, &ctrl)) {
  2020→        printf("Warning: Invalid control string '%s'\n", control_str);
  2021→        return false;
  2022→    }
  2023→
  2024→    // Check if already bound
  2025→    for (int i = 0; i < action->control_count; i++) {
  2026→        if (action->controls[i].type == ctrl.type &&
  2027→            action->controls[i].code == ctrl.code &&
  2028→            action->controls[i].sign == ctrl.sign) {
  2029→            return true;  // Already bound
... [470 more lines]

2500→static bool input_is_released(const char* name) {
  2501→    // Check actions first
  2502→    if (action_is_released(name)) return true;
  2503→    // Check chords
  2504→    InputChord* chord = chord_find(name);
  2505→    if (chord) return chord_is_released(chord);
  2506→    // Check sequences
  2507→    Sequence* seq = sequence_find(name);
  2508→    if (seq) return sequence_is_released(seq);
  2509→    // Check holds
  2510→    Hold* hold = hold_find(name);
  2511→    if (hold) return hold_is_released(hold);
  2512→    return false;
  2513→}
  2514→
  2515→// Check if any bound action was just pressed this frame
  2516→static bool input_any_pressed(void) {
  2517→    for (int i = 0; i < action_count; i++) {
  2518→        if (action_is_pressed(actions[i].name)) {
  2519→            return true;
  2520→        }
  2521→    }
  2522→    return false;
  2523→}
  2524→
  2525→// Get the name of the first action that was just pressed this frame (or NULL)
  2526→static const char* input_get_pressed_action(void) {
  2527→    for (int i = 0; i < action_count; i++) {
  2528→        if (action_is_pressed(actions[i].name)) {
  2529→            return actions[i].name;
... [470 more lines]

3000→            // Additive blending: result = src * src.a + dst (good for glows, particles)
  3001→            glBlendFunc(GL_SRC_ALPHA, GL_ONE);
  3002→            break;
  3003→    }
  3004→}
  3005→
  3006→// Render all commands on a layer
  3007→// Note: Caller must have set up projection matrix and bound initial FBO before calling
  3008→static void layer_render(Layer* layer) {
  3009→    batch_vertex_count = 0;
  3010→    current_batch_texture = 0;
  3011→    uint8_t current_blend = BLEND_ALPHA;  // Start with default
  3012→    apply_blend_mode(current_blend);
  3013→
  3014→    for (int i = 0; i < layer->command_count; i++) {
  3015→        const DrawCommand* cmd = &layer->commands[i];
  3016→
  3017→        // Handle uniform setting commands
  3018→        // These need to temporarily switch programs, so flush batch first and restore after
  3019→        if (cmd->type == COMMAND_SET_UNIFORM_FLOAT ||
  3020→            cmd->type == COMMAND_SET_UNIFORM_VEC2 ||
  3021→            cmd->type == COMMAND_SET_UNIFORM_VEC4 ||
  3022→            cmd->type == COMMAND_SET_UNIFORM_INT) {
  3023→            // Flush any pending draws before switching programs
  3024→            batch_flush();
  3025→            current_batch_texture = 0;
  3026→
  3027→            glUseProgram(cmd->texture_id);
  3028→            switch (cmd->type) {
  3029→                case COMMAND_SET_UNIFORM_FLOAT:
... [470 more lines]

3500→    GLuint shader = (GLuint)luaL_checkinteger(L, 2);
  3501→    const char* name = luaL_checkstring(L, 3);
  3502→    int value = (int)luaL_checkinteger(L, 4);
  3503→    layer_shader_set_int(layer, shader, name, value);
  3504→    return 0;
  3505→}
  3506→
  3507→// Layer effect Lua bindings
  3508→static int l_layer_apply_shader(lua_State* L) {
  3509→    Layer* layer = (Layer*)lua_touserdata(L, 1);
  3510→    GLuint shader = (GLuint)luaL_checkinteger(L, 2);
  3511→    layer_apply_shader(layer, shader);
  3512→    return 0;
  3513→}
  3514→
  3515→static int l_layer_draw(lua_State* L) {
  3516→    Layer* layer = (Layer*)lua_touserdata(L, 1);
  3517→    float x = (lua_gettop(L) >= 2) ? (float)luaL_checknumber(L, 2) : 0.0f;
  3518→    float y = (lua_gettop(L) >= 3) ? (float)luaL_checknumber(L, 3) : 0.0f;
  3519→    layer_queue_draw(layer, x, y);
  3520→    return 0;
  3521→}
  3522→
  3523→static int l_layer_get_texture(lua_State* L) {
  3524→    Layer* layer = (Layer*)lua_touserdata(L, 1);
  3525→    GLuint tex = layer_get_texture(layer);
  3526→    lua_pushinteger(L, (lua_Integer)tex);
  3527→    return 1;
  3528→}
  3529→
... [470 more lines]

4000→        lua_rawgeti(L, 3, i * 2 + 2);
  4001→        points[i].x = (float)lua_tonumber(L, -2) / pixels_per_meter;
  4002→        points[i].y = (float)lua_tonumber(L, -1) / pixels_per_meter;
  4003→        lua_pop(L, 2);
  4004→    }
  4005→
  4006→    // Parse options table (4th argument, optional)
  4007→    bool is_sensor = false;
  4008→    if (lua_istable(L, 4)) {
  4009→        lua_getfield(L, 4, "sensor");
  4010→        if (!lua_isnil(L, -1)) is_sensor = lua_toboolean(L, -1);
  4011→        lua_pop(L, 1);
  4012→    }
  4013→
  4014→    // Create shape def
  4015→    b2ShapeDef shape_def = b2DefaultShapeDef();
  4016→    setup_shape_def_from_tag(&shape_def, tag, is_sensor);
  4017→
  4018→    // Compute convex hull
  4019→    b2Hull hull = b2ComputeHull(points, vertex_count);
  4020→    if (hull.count == 0) {
  4021→        return luaL_error(L, "Failed to compute convex hull from vertices");
  4022→    }
  4023→
  4024→    // Create polygon from hull
  4025→    b2Polygon polygon = b2MakePolygon(&hull, 0.0f);
  4026→
  4027→    // Create shape
  4028→    b2ShapeId shape_id = b2CreatePolygonShape(*body_id, &shape_def, &polygon);
  4029→
... [470 more lines]

4500→    int tag_a = physics_tag_find(tag_a_name);
  4501→    int tag_b = physics_tag_find(tag_b_name);
  4502→    if (tag_a < 0) return luaL_error(L, "Unknown tag: %s", tag_a_name);
  4503→    if (tag_b < 0) return luaL_error(L, "Unknown tag: %s", tag_b_name);
  4504→
  4505→    lua_newtable(L);
  4506→    int result_index = 1;
  4507→
  4508→    for (int i = 0; i < hit_count; i++) {
  4509→        PhysicsHitEvent* e = &hit_events[i];
  4510→        if (tags_match(e->tag_a, e->tag_b, tag_a, tag_b)) {
  4511→            lua_newtable(L);
  4512→
  4513→            // body_a
  4514→            b2BodyId* body_a_ud = (b2BodyId*)lua_newuserdata(L, sizeof(b2BodyId));
  4515→            *body_a_ud = e->body_a;
  4516→            lua_setfield(L, -2, "body_a");
  4517→
  4518→            // body_b
  4519→            b2BodyId* body_b_ud = (b2BodyId*)lua_newuserdata(L, sizeof(b2BodyId));
  4520→            *body_b_ud = e->body_b;
  4521→            lua_setfield(L, -2, "body_b");
  4522→
  4523→            // shape_a
  4524→            b2ShapeId* shape_a_ud = (b2ShapeId*)lua_newuserdata(L, sizeof(b2ShapeId));
  4525→            *shape_a_ud = e->shape_a;
  4526→            lua_setfield(L, -2, "shape_a");
  4527→
  4528→            // shape_b
  4529→            b2ShapeId* shape_b_ud = (b2ShapeId*)lua_newuserdata(L, sizeof(b2ShapeId));
... [470 more lines]

5000→    *body_ud = body;
  5001→    lua_setfield(L, -2, "body");
  5002→
  5003→    // shape
  5004→    b2ShapeId* shape_ud = (b2ShapeId*)lua_newuserdata(L, sizeof(b2ShapeId));
  5005→    *shape_ud = result.shapeId;
  5006→    lua_setfield(L, -2, "shape");
  5007→
  5008→    // point (convert back to pixels)
  5009→    lua_pushnumber(L, result.point.x * pixels_per_meter);
  5010→    lua_setfield(L, -2, "point_x");
  5011→    lua_pushnumber(L, result.point.y * pixels_per_meter);
  5012→    lua_setfield(L, -2, "point_y");
  5013→
  5014→    // normal
  5015→    lua_pushnumber(L, result.normal.x);
  5016→    lua_setfield(L, -2, "normal_x");
  5017→    lua_pushnumber(L, result.normal.y);
  5018→    lua_setfield(L, -2, "normal_y");
  5019→
  5020→    // fraction
  5021→    lua_pushnumber(L, result.fraction);
  5022→    lua_setfield(L, -2, "fraction");
  5023→
  5024→    return 1;
  5025→}
  5026→
  5027→// physics_raycast_all(x1, y1, x2, y2, tags) -> array of {body, shape, point_x, point_y, normal_x, normal_y, fraction}
  5028→static int l_physics_raycast_all(lua_State* L) {
  5029→    float x1 = (float)luaL_checknumber(L, 1) / pixels_per_meter;
... [470 more lines]

5500→}
  5501→
  5502→static int l_is_down(lua_State* L) {
  5503→    const char* name = luaL_checkstring(L, 1);
  5504→    lua_pushboolean(L, input_is_down(name));  // Checks both actions and chords
  5505→    return 1;
  5506→}
  5507→
  5508→static int l_is_pressed(lua_State* L) {
  5509→    const char* name = luaL_checkstring(L, 1);
  5510→    lua_pushboolean(L, input_is_pressed(name));  // Checks both actions and chords
  5511→    return 1;
  5512→}
  5513→
  5514→static int l_is_released(lua_State* L) {
  5515→    const char* name = luaL_checkstring(L, 1);
  5516→    lua_pushboolean(L, input_is_released(name));  // Checks both actions and chords
  5517→    return 1;
  5518→}
  5519→
  5520→static int l_input_any_pressed(lua_State* L) {
  5521→    lua_pushboolean(L, input_any_pressed());
  5522→    return 1;
  5523→}
  5524→
  5525→static int l_input_get_pressed_action(lua_State* L) {
  5526→    const char* action = input_get_pressed_action();
  5527→    if (action) {
  5528→        lua_pushstring(L, action);
  5529→    } else {
... [470 more lines]

6000→    "        \n"
  6001→    "        // In rough mode, snap to local pixel grid\n"
  6002→    "        if (u_aa_width == 0.0) {\n"
  6003→    "            local_p = floor(local_p) + 0.5;\n"
  6004→    "        }\n"
  6005→    "        \n"
  6006→    "        d = sdf_rect(local_p, center, half_size);\n"
  6007→    "    } else if (vType < 1.5) {\n"
  6008→    "        // Circle: shape = (quad_size, quad_size, radius, unused)\n"
  6009→    "        float quad_size = vShape.x;\n"
  6010→    "        vec2 local_p = vUV * quad_size;\n"
  6011→    "        vec2 center = vec2(quad_size * 0.5);\n"
  6012→    "        float radius = vShape.z;\n"
  6013→    "        // Snap radius for consistent shape\n"
  6014→    "        if (u_aa_width == 0.0) {\n"
  6015→    "            radius = floor(radius + 0.5);\n"
  6016→    "        }\n"
  6017→    "        d = sdf_circle(local_p, center, radius);\n"
  6018→    "    } else {\n"
  6019→    "        // Sprite: sample texture at texel centers for pixel-perfect rendering\n"
  6020→    "        // vColor is multiply (tint), vAddColor is additive (flash)\n"
  6021→    "        ivec2 texSize = textureSize(u_texture, 0);\n"
  6022→    "        vec2 snappedUV = (floor(vUV * vec2(texSize)) + 0.5) / vec2(texSize);\n"
  6023→    "        vec4 texColor = texture(u_texture, snappedUV);\n"
  6024→    "        FragColor = vec4(texColor.rgb * vColor.rgb + vAddColor, texColor.a * vColor.a);\n"
  6025→    "        return;\n"
  6026→    "    }\n"
  6027→    "    \n"
  6028→    "    // Apply anti-aliasing (or hard edges when u_aa_width = 0)\n"
  6029→    "    // vColor is multiply (tint), vAddColor is additive (flash)\n"
... [470 more lines]

6500→            glBindFramebuffer(GL_FRAMEBUFFER, layer->fbo);
  6501→            glViewport(0, 0, layer->width, layer->height);
  6502→
  6503→            if (error_state) {
  6504→                glClearColor(0.3f, 0.1f, 0.1f, 1.0f);  // Dark red for error
  6505→            } else {
  6506→                glClearColor(0.0f, 0.0f, 0.0f, 0.0f);  // Transparent black
  6507→            }
  6508→            glClear(GL_COLOR_BUFFER_BIT);
  6509→
  6510→            layer_render(layer);
  6511→        }
  6512→
  6513→        // === PASS 2: Composite all layers to screen ===
  6514→        glBindFramebuffer(GL_FRAMEBUFFER, 0);
  6515→
  6516→        // Get current window size
  6517→        int window_w, window_h;
  6518→        SDL_GetWindowSize(window, &window_w, &window_h);
  6519→
  6520→        // Calculate scale to fit window while maintaining aspect ratio
  6521→        // Use integer scaling for pixel-perfect rendering
  6522→        float scale_x = (float)window_w / GAME_WIDTH;
  6523→        float scale_y = (float)window_h / GAME_HEIGHT;
  6524→        float scale = (scale_x < scale_y) ? scale_x : scale_y;
  6525→        int int_scale = (int)scale;
  6526→        if (int_scale < 1) int_scale = 1;
  6527→
  6528→        // Calculate centered position with letterboxing
  6529→        int scaled_w = GAME_WIDTH * int_scale;
... [329 more lines]

File created successfully at: E:\a327ex\Anchor\reference\anchor-review-2-analysis.md

Command running in background with ID: b554527. Output is being written to: C:\Users\adn\AppData\Local\Temp\claude\E--a327ex-Anchor\tasks\b554527.output

5827:    lua_register(L, "physics_raycast", l_physics_raycast);
5828:    lua_register(L, "physics_raycast_all", l_physics_raycast_all);

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

2895→                       SHAPE_TYPE_CIRCLE, quad_size, quad_size, radius, 0.0f,
  2896→                       0.0f, 0.0f, 0.0f);
  2897→}
  2898→
  2899→// Forward declaration of batch_flush (needed for process_sprite)
  2900→static void batch_flush(void);
  2901→
  2902→// Process a sprite command (texture sampling)
  2903→// Image is centered at (x, y) in local coordinates
  2904→static void process_sprite(const DrawCommand* cmd) {
  2905→    float x = cmd->params[0];
  2906→    float y = cmd->params[1];
  2907→    float w = cmd->params[2];
  2908→    float h = cmd->params[3];
  2909→

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:
  2893→    batch_add_sdf_quad(wx0, wy0, wx1, wy1, wx2, wy2, wx3, wy3,
  2894→                       r, g, b, a,
  2895→                       SHAPE_TYPE_CIRCLE, quad_size, quad_size, radius, 0.0f,
  2896→                       0.0f, 0.0f, 0.0f);
  2897→}
  2898→
  2899→// Process a sprite command (texture sampling)
  2900→// Image is centered at (x, y) in local coordinates
  2901→static void process_sprite(const DrawCommand* cmd) {
  2902→    float x = cmd->params[0];
  2903→    float y = cmd->params[1];

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

2632-// Returns -1 to 1 for digital inputs
2633:// Will return analog values when gamepad support is added (Step 6)
2634-static float input_get_axis(const char* negative, const char* positive) {
2635-    float value = 0.0f;
2636-    if (action_is_down(negative)) value -= 1.0f;

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:
  2627→        input_bind_control(action_name, control_str);
  2628→    }
  2629→}
  2630→
  2631→// Get axis value from two actions (negative and positive)
  2632→// Returns -1, 0, or 1 based on which actions are held
  2633→static float input_get_axis(const char* negative, const char* positive) {
  2634→    float value = 0.0f;
  2635→    if (action_is_down(negative)) value -= 1.0f;
  2636→    if (action_is_down(positive)) value += 1.0f;
  2637→    return value;

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

3149:static void shader_set_float(GLuint shader, const char* name, float value);
3150:static void shader_set_vec2(GLuint shader, const char* name, float x, float y);
3151:static void shader_set_vec4(GLuint shader, const char* name, float x, float y, float z, float w);
3152:static void shader_set_int(GLuint shader, const char* name, int value);
3153:static void shader_set_texture(GLuint shader, const char* name, GLuint texture, int unit);
6162:static void shader_set_float(GLuint shader, const char* name, float value) {
6168:static void shader_set_vec2(GLuint shader, const char* name, float x, float y) {
6174:static void shader_set_vec4(GLuint shader, const char* name, float x, float y, float z, float w) {
6180:static void shader_set_int(GLuint shader, const char* name, int value) {
6186:static void shader_set_texture(GLuint shader, const char* name, GLuint texture, int unit) {

3145→// Forward declarations for effect shader functions (defined after shader sources)
  3146→static GLuint effect_shader_load_file(const char* path);
  3147→static GLuint effect_shader_load_string(const char* frag_source);
  3148→static void effect_shader_destroy(GLuint shader);
  3149→static void shader_set_float(GLuint shader, const char* name, float value);
  3150→static void shader_set_vec2(GLuint shader, const char* name, float x, float y);
  3151→static void shader_set_vec4(GLuint shader, const char* name, float x, float y, float z, float w);
  3152→static void shader_set_int(GLuint shader, const char* name, int value);
  3153→static void shader_set_texture(GLuint shader, const char* name, GLuint texture, int unit);
  3154→
  3155→// Lua bindings
  3156→static int l_layer_create(lua_State* L) {
  3157→    const char* name = luaL_checkstring(L, 1);
  3158→    Layer* layer = layer_get_or_create(name);
  3159→    if (!layer) {

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:
  3141→    printf("Created layer: %s\n", name);
  3142→    return layer;
  3143→}
  3144→
  3145→// Forward declarations for effect shader functions (defined after shader sources)
  3146→static GLuint effect_shader_load_file(const char* path);
  3147→static GLuint effect_shader_load_string(const char* frag_source);
  3148→static void effect_shader_destroy(GLuint shader);
  3149→
  3150→// Lua bindings
  3151→static int l_layer_create(lua_State* L) {
  3152→    const char* name = luaL_checkstring(L, 1);
  3153→    Layer* layer = layer_get_or_create(name);
  3154→    if (!layer) {

6157:static void shader_set_float(GLuint shader, const char* name, float value) {
6158-    glUseProgram(shader);
6159-    GLint loc = glGetUniformLocation(shader, name);
6160-    if (loc != -1) glUniform1f(loc, value);
6161-}
6162-
6163-static void shader_set_vec2(GLuint shader, const char* name, float x, float y) {
6164-    glUseProgram(shader);
6165-    GLint loc = glGetUniformLocation(shader, name);
6166-    if (loc != -1) glUniform2f(loc, x, y);
6167-}
6168-
6169-static void shader_set_vec4(GLuint shader, const char* name, float x, float y, float z, float w) {
6170-    glUseProgram(shader);
6171-    GLint loc = glGetUniformLocation(shader, name);
6172-    if (loc != -1) glUniform4f(loc, x, y, z, w);
6173-}
6174-
6175-static void shader_set_int(GLuint shader, const char* name, int value) {
6176-    glUseProgram(shader);
6177-    GLint loc = glGetUniformLocation(shader, name);
6178-    if (loc != -1) glUniform1i(loc, value);
6179-}
6180-
6181-static void shader_set_texture(GLuint shader, const char* name, GLuint texture, int unit) {
6182-    glUseProgram(shader);
6183-    glActiveTexture(GL_TEXTURE0 + unit);
6184-    glBindTexture(GL_TEXTURE_2D, texture);
6185-    GLint loc = glGetUniformLocation(shader, name);
6186-    if (loc != -1) glUniform1i(loc, unit);
... [11 more lines]

6148→
  6149→// Destroy an effect shader program
  6150→static void effect_shader_destroy(GLuint shader) {
  6151→    if (shader) {
  6152→        glDeleteProgram(shader);
  6153→    }
  6154→}
  6155→
  6156→// Uniform setters
  6157→static void shader_set_float(GLuint shader, const char* name, float value) {
  6158→    glUseProgram(shader);
  6159→    GLint loc = glGetUniformLocation(shader, name);
  6160→    if (loc != -1) glUniform1f(loc, value);
  6161→}
  6162→
  6163→static void shader_set_vec2(GLuint shader, const char* name, float x, float y) {
  6164→    glUseProgram(shader);
  6165→    GLint loc = glGetUniformLocation(shader, name);
  6166→    if (loc != -1) glUniform2f(loc, x, y);
  6167→}
  6168→
  6169→static void shader_set_vec4(GLuint shader, const char* name, float x, float y, float z, float w) {
  6170→    glUseProgram(shader);
  6171→    GLint loc = glGetUniformLocation(shader, name);
  6172→    if (loc != -1) glUniform4f(loc, x, y, z, w);
  6173→}
  6174→
  6175→static void shader_set_int(GLuint shader, const char* name, int value) {
  6176→    glUseProgram(shader);
  6177→    GLint loc = glGetUniformLocation(shader, name);
... [15 more lines]

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:
  6145→    }
  6146→    return shader;
  6147→}
  6148→
  6149→// Destroy an effect shader program
  6150→static void effect_shader_destroy(GLuint shader) {
  6151→    if (shader) {
  6152→        glDeleteProgram(shader);
  6153→    }
  6154→}
  6155→
  6156→// Error handler that adds stack trace
  6157→static int traceback(lua_State* L) {
  6158→    const char* msg = lua_tostring(L, 1);
  6159→    luaL_traceback(L, L, msg, 1);
  6160→    return 1;

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

3182:static int l_rgba(lua_State* L) {
5368:static int l_noise(lua_State* L) {
5493:static int l_is_down(lua_State* L) {
5499:static int l_is_pressed(lua_State* L) {
5505:static int l_is_released(lua_State* L) {

3180→}
  3181→
  3182→static int l_rgba(lua_State* L) {
  3183→    int r = (int)luaL_checkinteger(L, 1);
  3184→    int g = (int)luaL_checkinteger(L, 2);
  3185→    int b = (int)luaL_checkinteger(L, 3);
  3186→    int a = (int)luaL_optinteger(L, 4, 255);
  3187→    uint32_t color = ((r & 0xFF) << 24) | ((g & 0xFF) << 16) | ((b & 0xFF) << 8) | (a & 0xFF);
  3188→    lua_pushinteger(L, color);
  3189→    return 1;
  3190→}
  3191→

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:
  3178→    layer_add_circle(layer, x, y, radius, color);
  3179→    return 0;
  3180→}
  3181→
  3182→static int l_color_rgba(lua_State* L) {
  3183→    int r = (int)luaL_checkinteger(L, 1);
  3184→    int g = (int)luaL_checkinteger(L, 2);
  3185→    int b = (int)luaL_checkinteger(L, 3);
  3186→    int a = (int)luaL_optinteger(L, 4, 255);

5365→}
  5366→
  5367→// noise(x, y?, z?) - Perlin noise [-1, 1]
  5368→static int l_noise(lua_State* L) {
  5369→    float x = (float)luaL_checknumber(L, 1);
  5370→    float y = (float)luaL_optnumber(L, 2, 0.0);
  5371→    float z = (float)luaL_optnumber(L, 3, 0.0);
  5372→
  5373→    // stb_perlin_noise3 returns [-1, 1]
  5374→    float result = stb_perlin_noise3(x, y, z, 0, 0, 0);
  5375→    lua_pushnumber(L, result);
  5376→    return 1;

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:
  5363→    lua_pushinteger(L, len);
  5364→    return 1;
  5365→}
  5366→
  5367→// noise(x, y?, z?) - Perlin noise [-1, 1]
  5368→static int l_random_noise(lua_State* L) {
  5369→    float x = (float)luaL_checknumber(L, 1);
  5370→    float y = (float)luaL_optnumber(L, 2, 0.0);
  5371→    float z = (float)luaL_optnumber(L, 3, 0.0);
  5372→

5490→    return 1;
  5491→}
  5492→
  5493→static int l_is_down(lua_State* L) {
  5494→    const char* name = luaL_checkstring(L, 1);
  5495→    lua_pushboolean(L, input_is_down(name));  // Checks both actions and chords
  5496→    return 1;
  5497→}
  5498→
  5499→static int l_is_pressed(lua_State* L) {
  5500→    const char* name = luaL_checkstring(L, 1);
  5501→    lua_pushboolean(L, input_is_pressed(name));  // Checks both actions and chords
  5502→    return 1;
  5503→}
  5504→
  5505→static int l_is_released(lua_State* L) {
  5506→    const char* name = luaL_checkstring(L, 1);
  5507→    lua_pushboolean(L, input_is_released(name));  // Checks both actions and chords
  5508→    return 1;
  5509→}
  5510→
  5511→static int l_input_any_pressed(lua_State* L) {
  5512→    lua_pushboolean(L, input_any_pressed());
  5513→    return 1;
  5514→}

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:
  5489→    lua_pushboolean(L, input_bind_control(action, control));
  5490→    return 1;
  5491→}
  5492→
  5493→static int l_input_is_down(lua_State* L) {
  5494→    const char* name = luaL_checkstring(L, 1);
  5495→    lua_pushboolean(L, input_is_down(name));  // Checks both actions and chords
  5496→    return 1;
  5497→}
  5498→
  5499→static int l_input_is_pressed(lua_State* L) {
  5500→    const char* name = luaL_checkstring(L, 1);
  5501→    lua_pushboolean(L, input_is_pressed(name));  // Checks both actions and chords
  5502→    return 1;
  5503→}
  5504→
  5505→static int l_input_is_released(lua_State* L) {
  5506→    const char* name = luaL_checkstring(L, 1);
  5507→    lua_pushboolean(L, input_is_released(name));  // Checks both actions and chords
  5508→    return 1;
  5509→}
  5510→
  5511→static int l_input_any_pressed(lua_State* L) {
  5512→    lua_pushboolean(L, input_any_pressed());
  5513→    return 1;

5729:    lua_register(L, "rgba", l_rgba);
5834:    lua_register(L, "noise", l_noise);
5864:    lua_register(L, "is_down", l_is_down);
5865:    lua_register(L, "is_pressed", l_is_pressed);
5866:    lua_register(L, "is_released", l_is_released);

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:
  5725→    lua_register(L, "music_play", l_music_play);
  5726→    lua_register(L, "music_stop", l_music_stop);
  5727→    lua_register(L, "music_set_volume", l_music_set_volume);
  5728→    lua_register(L, "audio_set_master_pitch", l_audio_set_master_pitch);
  5729→    lua_register(L, "rgba", l_color_rgba);
  5730→    lua_register(L, "set_filter_mode", l_set_filter_mode);
  5731→    lua_register(L, "get_filter_mode", l_get_filter_mode);
  5732→    lua_register(L, "timing_resync", l_timing_resync);
  5733→    // Effect shaders

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:
  5830→    lua_register(L, "random_normal", l_random_normal);
  5831→    lua_register(L, "random_choice", l_random_choice);
  5832→    lua_register(L, "random_choices", l_random_choices);
  5833→    lua_register(L, "random_weighted", l_random_weighted);
  5834→    lua_register(L, "noise", l_random_noise);
  5835→    // Input - Keyboard
  5836→    lua_register(L, "key_is_down", l_key_is_down);
  5837→    lua_register(L, "key_is_pressed", l_key_is_pressed);
  5838→    lua_register(L, "key_is_released", l_key_is_released);

5860→    lua_register(L, "input_bind_all", l_input_bind_all);
  5861→    lua_register(L, "input_get_axis", l_input_get_axis);
  5862→    lua_register(L, "input_get_vector", l_input_get_vector);
  5863→    lua_register(L, "input_set_deadzone", l_input_set_deadzone);
  5864→    lua_register(L, "is_down", l_is_down);
  5865→    lua_register(L, "is_pressed", l_is_pressed);
  5866→    lua_register(L, "is_released", l_is_released);
  5867→    lua_register(L, "input_any_pressed", l_input_any_pressed);
  5868→    lua_register(L, "input_get_pressed_action", l_input_get_pressed_action);
  5869→    // Input - Gamepad
  5870→    lua_register(L, "gamepad_is_connected", l_gamepad_is_connected);
  5871→    lua_register(L, "gamepad_get_axis", l_gamepad_get_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:
  5860→    lua_register(L, "input_bind_all", l_input_bind_all);
  5861→    lua_register(L, "input_get_axis", l_input_get_axis);
  5862→    lua_register(L, "input_get_vector", l_input_get_vector);
  5863→    lua_register(L, "input_set_deadzone", l_input_set_deadzone);
  5864→    lua_register(L, "is_down", l_input_is_down);
  5865→    lua_register(L, "is_pressed", l_input_is_pressed);
  5866→    lua_register(L, "is_released", l_input_is_released);
  5867→    lua_register(L, "input_any_pressed", l_input_any_pressed);
  5868→    lua_register(L, "input_get_pressed_action", l_input_get_pressed_action);
  5869→    // Input - Gamepad
  5870→    lua_register(L, "gamepad_is_connected", l_gamepad_is_connected);

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

124:} DrawCommand;

108→    uint32_t color;         // Packed RGBA for multiply/tint; For SET_UNIFORM_*: uniform location (4 bytes)
   109→
   110→    // Shape parameters (meaning depends on type)
   111→    // RECTANGLE: params[0]=x, [1]=y, [2]=w, [3]=h
   112→    // CIRCLE: params[0]=x, [1]=y, [2]=radius
   113→    // SPRITE: params[0]=x, [1]=y, [2]=w, [3]=h, [4]=ox, [5]=oy (+ texture_id)
   114→    // GLYPH: params[0]=x, [1]=y, [2]=w, [3]=h, [4]=packed(u0,v0), [5]=packed(u1,v1) (+ texture_id)
   115→    // SET_UNIFORM_FLOAT: params[0]=value
   116→    // SET_UNIFORM_VEC2: params[0]=x, [1]=y
   117→    // SET_UNIFORM_VEC4: params[0]=x, [1]=y, [2]=z, [3]=w
   118→    // SET_UNIFORM_INT: params[0]=value (as float, cast to int)
   119→    float params[6];        // 24 bytes (reduced from 8 to fit 64-byte target)
   120→
   121→    GLuint texture_id;      // For SPRITE/GLYPH: texture handle; For APPLY_SHADER: shader handle (4 bytes)
   122→    uint32_t flash_color;   // For SPRITE: packed RGB additive flash (GLYPH uses params for UVs instead)
   123→    // Total: 4 + 24 + 4 + 24 + 4 + 4 = 64 bytes
   124→} DrawCommand;
   125→
   126→// Verify DrawCommand is exactly 64 bytes (compile-time check)
   127→#ifdef _MSC_VER
   128→    static_assert(sizeof(DrawCommand) == 64, "DrawCommand must be 64 bytes");
   129→#else
   130→    _Static_assert(sizeof(DrawCommand) == 64, "DrawCommand must be 64 bytes");
   131→#endif
   132→

95→// DrawCommand — stores one deferred draw call
    96→// Explicitly padded to 64 bytes for consistent memory layout across platforms
    97→//
    98→// Coordinate conventions:
    99→//   RECTANGLE: x,y is top-left corner, w,h extend right and down (matches SDL/LÖVE)
   100→//   CIRCLE: x,y is center, radius extends outward
   101→//   SPRITE: x,y is center (texture drawn centered at that point)
   102→typedef struct {
   103→    uint8_t type;           // COMMAND_RECTANGLE, COMMAND_CIRCLE, COMMAND_SPRITE, COMMAND_APPLY_SHADER, COMMAND_SET_UNIFORM_*
   104→    uint8_t blend_mode;     // BLEND_ALPHA, BLEND_ADDITIVE, BLEND_MULTIPLY
   105→    uint8_t _pad[2];        // Padding to align next field to 4 bytes
   106→
   107→    float transform[6];     // 2D affine matrix (2x3): [m00 m01 m02 m10 m11 m12] (24 bytes)
   108→    uint32_t color;         // Packed RGBA for multiply/tint; For SET_UNIFORM_*: uniform location (4 bytes)
   109→
   110→    // Shape parameters (meaning depends on type)
   111→    // RECTANGLE: params[0]=x, [1]=y, [2]=w, [3]=h
   112→    // CIRCLE: params[0]=x, [1]=y, [2]=radius
   113→    // SPRITE: params[0]=x, [1]=y, [2]=w, [3]=h, [4]=ox, [5]=oy (+ texture_id)
   114→    // GLYPH: params[0]=x, [1]=y, [2]=w, [3]=h, [4]=packed(u0,v0), [5]=packed(u1,v1) (+ texture_id)
   115→    // SET_UNIFORM_FLOAT: params[0]=value
   116→    // SET_UNIFORM_VEC2: params[0]=x, [1]=y
   117→    // SET_UNIFORM_VEC4: params[0]=x, [1]=y, [2]=z, [3]=w
   118→    // SET_UNIFORM_INT: params[0]=value (as float, cast to int)
   119→    float params[6];        // 24 bytes (reduced from 8 to fit 64-byte target)
   120→
   121→    GLuint texture_id;      // For SPRITE/GLYPH: texture handle; For APPLY_SHADER: shader handle (4 bytes)
   122→    uint32_t flash_color;   // For SPRITE: packed RGB additive flash (GLYPH uses params for UVs instead)
   123→    // Total: 4 + 24 + 4 + 24 + 4 + 4 = 64 bytes
   124→} DrawCommand;
... [10 more lines]

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:
    98→// Coordinate conventions:
    99→//   RECTANGLE: x,y is top-left corner, w,h extend right and down (matches SDL/LÖVE)
   100→//   CIRCLE: x,y is center, radius extends outward
   101→//   SPRITE: x,y is center (texture drawn centered at that point)
   102→typedef struct {
   103→    uint8_t type;           // COMMAND_RECTANGLE, COMMAND_CIRCLE, COMMAND_SPRITE, COMMAND_APPLY_SHADER, COMMAND_SET_UNIFORM_*
   104→    uint8_t blend_mode;     // BLEND_ALPHA, BLEND_ADDITIVE, BLEND_MULTIPLY
   105→    uint8_t _pad[2];        // Padding to align next field to 4 bytes
   106→
   107→    float transform[6];     // 2D affine matrix (2x3): [m00 m01 m02 m10 m11 m12] (24 bytes)
   108→
   109→    union {
   110→        uint32_t color;           // Packed RGBA for multiply/tint (shapes)
   111→        uint32_t uniform_location; // Uniform location (SET_UNIFORM_* commands)
   112→    };
   113→
   114→    // Shape parameters (meaning depends on type)
   115→    // RECTANGLE: params[0]=x, [1]=y, [2]=w, [3]=h
   116→    // CIRCLE: params[0]=x, [1]=y, [2]=radius
   117→    // SPRITE: params[0]=x, [1]=y, [2]=w, [3]=h, [4]=ox, [5]=oy (+ texture_id)
   118→    // GLYPH: params[0]=x, [1]=y, [2]=w, [3]=h, [4]=packed(u0,v0), [5]=packed(u1,v1) (+ texture_id)
   119→    // SET_UNIFORM_FLOAT: params[0]=value
   120→    // SET_UNIFORM_VEC2: params[0]=x, [1]=y
   121→    // SET_UNIFORM_VEC4: params[0]=x, [1]=y, [2]=z, [3]=w
   122→    // SET_UNIFORM_INT: params[0]=value (as float, cast to int)
   123→    float params[6];        // 24 bytes (reduced from 8 to fit 64-byte target)
   124→
   125→    union {
   126→        GLuint texture_id;  // Texture handle (SPRITE, GLYPH)
... [9 more lines]

2681:    cmd->texture_id = shader;  // Reuse texture_id field for shader handle
2694:    cmd->texture_id = shader;
2695:    cmd->color = (uint32_t)loc;  // Store uniform location
2708:    cmd->texture_id = shader;
2709:    cmd->color = (uint32_t)loc;
2723:    cmd->texture_id = shader;
2724:    cmd->color = (uint32_t)loc;
2740:    cmd->texture_id = shader;
2741:    cmd->color = (uint32_t)loc;

2675→    if (!shader) return;
  2676→    if (layer->command_count >= MAX_COMMAND_CAPACITY) return;
  2677→
  2678→    DrawCommand* cmd = &layer->commands[layer->command_count++];
  2679→    memset(cmd, 0, sizeof(DrawCommand));
  2680→    cmd->type = COMMAND_APPLY_SHADER;
  2681→    cmd->texture_id = shader;  // Reuse texture_id field for shader handle
  2682→}
  2683→
  2684→// Queue uniform setting commands (deferred - applied when processing commands)
  2685→static void layer_shader_set_float(Layer* layer, GLuint shader, const char* name, float value) {
  2686→    if (!shader || layer->command_count >= MAX_COMMAND_CAPACITY) return;
  2687→
  2688→    GLint loc = glGetUniformLocation(shader, name);
  2689→    if (loc == -1) return;  // Uniform not found
  2690→
  2691→    DrawCommand* cmd = &layer->commands[layer->command_count++];
  2692→    memset(cmd, 0, sizeof(DrawCommand));
  2693→    cmd->type = COMMAND_SET_UNIFORM_FLOAT;
  2694→    cmd->texture_id = shader;
  2695→    cmd->color = (uint32_t)loc;  // Store uniform location
  2696→    cmd->params[0] = value;
  2697→}
  2698→
  2699→static void layer_shader_set_vec2(Layer* layer, GLuint shader, const char* name, float x, float y) {
  2700→    if (!shader || layer->command_count >= MAX_COMMAND_CAPACITY) return;
  2701→
  2702→    GLint loc = glGetUniformLocation(shader, name);
  2703→    if (loc == -1) return;
  2704→
... [50 more lines]

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:
  2674→static void layer_apply_shader(Layer* layer, GLuint shader) {
  2675→    if (!shader) return;
  2676→    if (layer->command_count >= MAX_COMMAND_CAPACITY) return;
  2677→
  2678→    DrawCommand* cmd = &layer->commands[layer->command_count++];
  2679→    memset(cmd, 0, sizeof(DrawCommand));
  2680→    cmd->type = COMMAND_APPLY_SHADER;
  2681→    cmd->shader_id = shader;
  2682→}
  2683→
  2684→// Queue uniform setting commands (deferred - applied when processing commands)
  2685→static void layer_shader_set_float(Layer* layer, GLuint shader, const char* name, float value) {
  2686→    if (!shader || layer->command_count >= MAX_COMMAND_CAPACITY) return;

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:
  2687→
  2688→    GLint loc = glGetUniformLocation(shader, name);
  2689→    if (loc == -1) return;  // Uniform not found
  2690→
  2691→    DrawCommand* cmd = &layer->commands[layer->command_count++];
  2692→    memset(cmd, 0, sizeof(DrawCommand));
  2693→    cmd->type = COMMAND_SET_UNIFORM_FLOAT;
  2694→    cmd->shader_id = shader;
  2695→    cmd->uniform_location = (uint32_t)loc;
  2696→    cmd->params[0] = value;
  2697→}
  2698→
  2699→static void layer_shader_set_vec2(Layer* layer, GLuint shader, const char* name, float x, float y) {
  2700→    if (!shader || layer->command_count >= MAX_COMMAND_CAPACITY) return;
  2701→

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:
  2701→
  2702→    GLint loc = glGetUniformLocation(shader, name);
  2703→    if (loc == -1) return;
  2704→
  2705→    DrawCommand* cmd = &layer->commands[layer->command_count++];
  2706→    memset(cmd, 0, sizeof(DrawCommand));
  2707→    cmd->type = COMMAND_SET_UNIFORM_VEC2;
  2708→    cmd->shader_id = shader;
  2709→    cmd->uniform_location = (uint32_t)loc;
  2710→    cmd->params[0] = x;
  2711→    cmd->params[1] = y;
  2712→}
  2713→
  2714→static void layer_shader_set_vec4(Layer* layer, GLuint shader, const char* name, float x, float y, float z, float w) {
  2715→    if (!shader || layer->command_count >= MAX_COMMAND_CAPACITY) return;
  2716→

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:
  2716→
  2717→    GLint loc = glGetUniformLocation(shader, name);
  2718→    if (loc == -1) return;
  2719→
  2720→    DrawCommand* cmd = &layer->commands[layer->command_count++];
  2721→    memset(cmd, 0, sizeof(DrawCommand));
  2722→    cmd->type = COMMAND_SET_UNIFORM_VEC4;
  2723→    cmd->shader_id = shader;
  2724→    cmd->uniform_location = (uint32_t)loc;
  2725→    cmd->params[0] = x;
  2726→    cmd->params[1] = y;
  2727→    cmd->params[2] = z;
  2728→    cmd->params[3] = w;
  2729→}
  2730→
  2731→static void layer_shader_set_int(Layer* layer, GLuint shader, const char* name, int value) {
  2732→    if (!shader || layer->command_count >= MAX_COMMAND_CAPACITY) return;
  2733→

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:
  2733→
  2734→    GLint loc = glGetUniformLocation(shader, name);
  2735→    if (loc == -1) return;
  2736→
  2737→    DrawCommand* cmd = &layer->commands[layer->command_count++];
  2738→    memset(cmd, 0, sizeof(DrawCommand));
  2739→    cmd->type = COMMAND_SET_UNIFORM_INT;
  2740→    cmd->shader_id = shader;
  2741→    cmd->uniform_location = (uint32_t)loc;
  2742→    cmd->params[0] = (float)value;  // Store as float, cast back when processing
  2743→}
  2744→
  2745→// Execute shader application (ping-pong): read from current buffer, apply shader, write to alternate
  2746→// Called during command processing when COMMAND_APPLY_SHADER is encountered
  2747→static void execute_apply_shader(Layer* layer, GLuint shader) {

1160:    cmd->color = color;
1172:    cmd->color = color;
1184:    cmd->color = color;
1186:    cmd->texture_id = tex->id;
1222:    cmd->color = color;
1223:    cmd->texture_id = atlas_texture;
2855:    unpack_color(cmd->color, &r, &g, &b, &a);
2894:    unpack_color(cmd->color, &r, &g, &b, &a);
2914:    if (current_batch_texture != cmd->texture_id && batch_vertex_count > 0) {
2917:    current_batch_texture = cmd->texture_id;
2938:    unpack_color(cmd->color, &r, &g, &b, &a);
2962:    if (current_batch_texture != cmd->texture_id && batch_vertex_count > 0) {
2965:    current_batch_texture = cmd->texture_id;
2982:    unpack_color(cmd->color, &r, &g, &b, &a);
3030:            glUseProgram(cmd->texture_id);
3033:                    glUniform1f((GLint)cmd->color, cmd->params[0]);
3036:                    glUniform2f((GLint)cmd->color, cmd->params[0], cmd->params[1]);
3039:                    glUniform4f((GLint)cmd->color, cmd->params[0], cmd->params[1], cmd->params[2], cmd->params[3]);
3042:                    glUniform1i((GLint)cmd->color, (int)cmd->params[0]);
3058:            execute_apply_shader(layer, cmd->texture_id);

3025→            cmd->type == COMMAND_SET_UNIFORM_INT) {
  3026→            // Flush any pending draws before switching programs
  3027→            batch_flush();
  3028→            current_batch_texture = 0;
  3029→
  3030→            glUseProgram(cmd->texture_id);
  3031→            switch (cmd->type) {
  3032→                case COMMAND_SET_UNIFORM_FLOAT:
  3033→                    glUniform1f((GLint)cmd->color, cmd->params[0]);
  3034→                    break;
  3035→                case COMMAND_SET_UNIFORM_VEC2:
  3036→                    glUniform2f((GLint)cmd->color, cmd->params[0], cmd->params[1]);
  3037→                    break;
  3038→                case COMMAND_SET_UNIFORM_VEC4:
  3039→                    glUniform4f((GLint)cmd->color, cmd->params[0], cmd->params[1], cmd->params[2], cmd->params[3]);
  3040→                    break;
  3041→                case COMMAND_SET_UNIFORM_INT:
  3042→                    glUniform1i((GLint)cmd->color, (int)cmd->params[0]);
  3043→                    break;
  3044→            }
  3045→
  3046→            // Restore drawing shader for subsequent draw commands
  3047→            glUseProgram(shader_program);
  3048→            continue;
  3049→        }
  3050→
  3051→        // Handle shader application command
  3052→        if (cmd->type == COMMAND_APPLY_SHADER) {
  3053→            // Flush pending draw commands before shader application
  3054→            batch_flush();
... [10 more lines]

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:
  3026→            // Flush any pending draws before switching programs
  3027→            batch_flush();
  3028→            current_batch_texture = 0;
  3029→
  3030→            glUseProgram(cmd->shader_id);
  3031→            switch (cmd->type) {
  3032→                case COMMAND_SET_UNIFORM_FLOAT:
  3033→                    glUniform1f((GLint)cmd->uniform_location, cmd->params[0]);
  3034→                    break;
  3035→                case COMMAND_SET_UNIFORM_VEC2:
  3036→                    glUniform2f((GLint)cmd->uniform_location, cmd->params[0], cmd->params[1]);
  3037→                    break;
  3038→                case COMMAND_SET_UNIFORM_VEC4:
  3039→                    glUniform4f((GLint)cmd->uniform_location, cmd->params[0], cmd->params[1], cmd->params[2], cmd->params[3]);
  3040→                    break;
  3041→                case COMMAND_SET_UNIFORM_INT:
  3042→                    glUniform1i((GLint)cmd->uniform_location, (int)cmd->params[0]);
  3043→                    break;
  3044→            }
  3045→
  3046→            // Restore drawing shader for subsequent draw commands
  3047→            glUseProgram(shader_program);
  3048→            continue;

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:
  3053→            // Flush pending draw commands before shader application
  3054→            batch_flush();
  3055→            current_batch_texture = 0;
  3056→
  3057→            // Execute the shader (ping-pong to alternate buffer)
  3058→            execute_apply_shader(layer, cmd->shader_id);
  3059→
  3060→            // After ping-pong, bind the NEW current FBO for subsequent draws
  3061→            // (execute_apply_shader toggled textures_swapped, so current is now the destination)
  3062→            GLuint current_fbo = layer->textures_swapped ? layer->effect_fbo : layer->fbo;

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

455:} Texture;

448→}
   449→
   450→// Texture
   451→typedef struct {
   452→    GLuint id;
   453→    int width;
   454→    int height;
   455→} Texture;
   456→
   457→// Load a texture from file using stb_image
   458→static Texture* texture_load(const char* path) {
   459→    int width, height, channels;
   460→    stbi_set_flip_vertically_on_load(0);  // Don't flip - we handle Y in our coordinate system
   461→    unsigned char* data = stbi_load(path, &width, &height, &channels, 4);  // Force RGBA
   462→    if (!data) {
   463→        fprintf(stderr, "Failed to load texture: %s\n", path);
   464→        return NULL;
   465→    }
   466→
   467→    Texture* tex = (Texture*)malloc(sizeof(Texture));
   468→    if (!tex) {
   469→        stbi_image_free(data);
   470→        return NULL;
   471→    }
   472→
   473→    tex->width = width;
   474→    tex->height = height;
   475→
   476→    glGenTextures(1, &tex->id);
   477→    glBindTexture(GL_TEXTURE_2D, tex->id);
... [20 more lines]

3241:static int l_texture_load(lua_State* L) {
3242-    const char* path = luaL_checkstring(L, 1);
3243-    Texture* tex = texture_load(path);
3244-    if (!tex) {
3245-        return luaL_error(L, "Failed to load texture: %s", path);
3246-    }
3247-    lua_pushlightuserdata(L, tex);
3248-    return 1;
3249-}
3250-
3251-static int l_texture_get_width(lua_State* L) {
3252-    Texture* tex = (Texture*)lua_touserdata(L, 1);
3253-    lua_pushinteger(L, tex->width);
3254-    return 1;
3255-}
3256-
--
5715:    lua_register(L, "texture_load", l_texture_load);
5716-    lua_register(L, "texture_get_width", l_texture_get_width);
5717-    lua_register(L, "texture_get_height", l_texture_get_height);
5718-    // Font
5719-    lua_register(L, "font_load", l_font_load);
5720-    lua_register(L, "font_unload", l_font_unload);
5721-    lua_register(L, "font_get_height", l_font_get_height);
5722-    lua_register(L, "font_get_text_width", l_font_get_text_width);
5723-    lua_register(L, "font_get_char_width", l_font_get_char_width);
5724-    lua_register(L, "font_get_glyph_metrics", l_font_get_glyph_metrics);
5725-    lua_register(L, "layer_draw_text", l_layer_draw_text);
5726-    lua_register(L, "layer_draw_glyph", l_layer_draw_glyph);
5727-    // Audio
... [3 more lines]

1464:#define MAX_LAYERS 16
1465:static Layer* layer_registry[MAX_LAYERS];
1466:static char* layer_names[MAX_LAYERS];
1467:static int layer_count = 0;
3125:    for (int i = 0; i < layer_count; i++) {
3127:            return layer_registry[i];
3132:    if (layer_count >= MAX_LAYERS) {
3133:        fprintf(stderr, "Error: Maximum number of layers (%d) reached\n", MAX_LAYERS);
3144:    layer_registry[layer_count] = layer;
3145:    layer_names[layer_count] = strdup(name);

[Showing results with pagination = limit: 10, offset: 0]

1460→static GLuint vao = 0;
  1461→static GLuint vbo = 0;
  1462→
  1463→// Layer registry
  1464→#define MAX_LAYERS 16
  1465→static Layer* layer_registry[MAX_LAYERS];
  1466→static char* layer_names[MAX_LAYERS];
  1467→static int layer_count = 0;
  1468→
  1469→// Screen blit resources
  1470→static GLuint screen_shader = 0;
  1471→static GLuint screen_vao = 0;
  1472→static GLuint screen_vbo = 0;
  1473→
  1474→// Manual layer compositing queue

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:
  1459→static GLuint shader_program = 0;
  1460→static GLuint vao = 0;
  1461→static GLuint vbo = 0;
  1462→
  1463→// Layer registry
  1464→#define MAX_LAYERS 16
  1465→static Layer* layer_registry[MAX_LAYERS];
  1466→static char* layer_names[MAX_LAYERS];
  1467→static int layer_count = 0;
  1468→
  1469→// Texture registry (for cleanup on shutdown)
  1470→#define MAX_TEXTURES 256
  1471→static Texture* texture_registry[MAX_TEXTURES];
  1472→static int texture_count = 0;
  1473→
  1474→// Effect shader registry (for cleanup on shutdown)
  1475→#define MAX_EFFECT_SHADERS 64
  1476→static GLuint effect_shader_registry[MAX_EFFECT_SHADERS];
  1477→static int effect_shader_count = 0;
  1478→
  1479→// Screen blit resources
  1480→static GLuint screen_shader = 0;
  1481→static GLuint screen_vao = 0;
  1482→static GLuint screen_vbo = 0;
  1483→

456→
   457→// Load a texture from file using stb_image
   458→static Texture* texture_load(const char* path) {
   459→    int width, height, channels;
   460→    stbi_set_flip_vertically_on_load(0);  // Don't flip - we handle Y in our coordinate system
   461→    unsigned char* data = stbi_load(path, &width, &height, &channels, 4);  // Force RGBA
   462→    if (!data) {
   463→        fprintf(stderr, "Failed to load texture: %s\n", path);
   464→        return NULL;
   465→    }
   466→
   467→    Texture* tex = (Texture*)malloc(sizeof(Texture));
   468→    if (!tex) {
   469→        stbi_image_free(data);
   470→        return NULL;
   471→    }
   472→
   473→    tex->width = width;
   474→    tex->height = height;
   475→
   476→    glGenTextures(1, &tex->id);
   477→    glBindTexture(GL_TEXTURE_2D, tex->id);
   478→    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
   479→    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
   480→    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
   481→    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
   482→    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
   483→    glBindTexture(GL_TEXTURE_2D, 0);
   484→
   485→    stbi_image_free(data);
... [15 more lines]

3248→    return 0;
  3249→}
  3250→
  3251→static int l_texture_load(lua_State* L) {
  3252→    const char* path = luaL_checkstring(L, 1);
  3253→    Texture* tex = texture_load(path);
  3254→    if (!tex) {
  3255→        return luaL_error(L, "Failed to load texture: %s", path);
  3256→    }
  3257→    lua_pushlightuserdata(L, tex);
  3258→    return 1;
  3259→}
  3260→
  3261→static int l_texture_get_width(lua_State* L) {
  3262→    Texture* tex = (Texture*)lua_touserdata(L, 1);
  3263→    lua_pushinteger(L, tex->width);
  3264→    return 1;
  3265→}
  3266→
  3267→static int l_texture_get_height(lua_State* L) {
  3268→    Texture* tex = (Texture*)lua_touserdata(L, 1);
  3269→    lua_pushinteger(L, tex->height);
  3270→    return 1;
  3271→}
  3272→

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:
  3247→    layer_pop(layer);
  3248→    return 0;
  3249→}
  3250→
  3251→static int l_texture_load(lua_State* L) {
  3252→    const char* path = luaL_checkstring(L, 1);
  3253→    Texture* tex = texture_load(path);
  3254→    if (!tex) {
  3255→        return luaL_error(L, "Failed to load texture: %s", path);
  3256→    }
  3257→    // Register for cleanup on shutdown
  3258→    if (texture_count < MAX_TEXTURES) {
  3259→        texture_registry[texture_count++] = tex;
  3260→    }
  3261→    lua_pushlightuserdata(L, tex);
  3262→    return 1;
  3263→}
  3264→
  3265→static int l_texture_unload(lua_State* L) {
  3266→    Texture* tex = (Texture*)lua_touserdata(L, 1);
  3267→    if (!tex) return 0;
  3268→    // Remove from registry
  3269→    for (int i = 0; i < texture_count; i++) {
  3270→        if (texture_registry[i] == tex) {
  3271→            texture_registry[i] = texture_registry[--texture_count];
  3272→            break;
  3273→        }
  3274→    }
  3275→    texture_destroy(tex);
... [8 more lines]

5720→    return 1;
  5721→}
  5722→
  5723→static int l_input_set_deadzone(lua_State* L) {
  5724→    float dz = (float)luaL_checknumber(L, 1);
  5725→    if (dz < 0) dz = 0;
  5726→    if (dz > 1) dz = 1;
  5727→    gamepad_deadzone = dz;
  5728→    return 0;
  5729→}
  5730→
  5731→static void register_lua_bindings(lua_State* L) {
  5732→    // Create RNG metatable (for random_create instances)
  5733→    luaL_newmetatable(L, RNG_METATABLE);
  5734→    lua_pop(L, 1);

5741:    lua_register(L, "layer_draw_texture", l_layer_draw_texture);
5743:    lua_register(L, "texture_load", l_texture_load);
5744:    lua_register(L, "texture_get_width", l_texture_get_width);
5745:    lua_register(L, "texture_get_height", l_texture_get_height);
5780:    lua_register(L, "layer_get_texture", l_layer_get_texture);

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:
  5739→    lua_register(L, "layer_push", l_layer_push);
  5740→    lua_register(L, "layer_pop", l_layer_pop);
  5741→    lua_register(L, "layer_draw_texture", l_layer_draw_texture);
  5742→    lua_register(L, "layer_set_blend_mode", l_layer_set_blend_mode);
  5743→    lua_register(L, "texture_load", l_texture_load);
  5744→    lua_register(L, "texture_unload", l_texture_unload);
  5745→    lua_register(L, "texture_get_width", l_texture_get_width);
  5746→    lua_register(L, "texture_get_height", l_texture_get_height);
  5747→    // Font
  5748→    lua_register(L, "font_load", l_font_load);
  5749→    lua_register(L, "font_unload", l_font_unload);
  5750→    lua_register(L, "font_get_height", l_font_get_height);

3163:static GLuint effect_shader_load_file(const char* path);
3164:static GLuint effect_shader_load_string(const char* frag_source);
3165-static void effect_shader_destroy(GLuint shader);
3166-
3167-// Lua bindings
3168-static int l_layer_create(lua_State* L) {
3169-    const char* name = luaL_checkstring(L, 1);
3170-    Layer* layer = layer_get_or_create(name);
3171-    if (!layer) {
3172-        return luaL_error(L, "Failed to create layer: %s", name);
3173-    }
3174-    lua_pushlightuserdata(L, layer);
3175-    return 1;
3176-}
3177-
3178-static int l_layer_rectangle(lua_State* L) {
3179-    Layer* layer = (Layer*)lua_touserdata(L, 1);
--
6169:static GLuint effect_shader_load_string(const char* frag_source) {
6170-    return create_shader_program(screen_vertex_source, frag_source);
6171-}
6172-
6173-// Create an effect shader program from a fragment shader file
6174:static GLuint effect_shader_load_file(const char* path) {
6175-    char* source = read_file_to_string(path);
6176-    if (!source) return 0;
6177-    GLuint shader = effect_shader_load_string(source);
6178-    free(source);
6179-    if (shader) {
6180-        printf("Loaded effect shader: %s\n", path);
... [9 more lines]

3466:static int l_shader_load_file(lua_State* L) {
3467-    const char* path = luaL_checkstring(L, 1);
3468-    GLuint shader = effect_shader_load_file(path);
3469-    if (!shader) {
3470-        return luaL_error(L, "Failed to load effect shader: %s", path);
3471-    }
3472-    lua_pushinteger(L, (lua_Integer)shader);
3473-    return 1;
3474-}
3475-
3476:static int l_shader_load_string(lua_State* L) {
3477-    const char* source = luaL_checkstring(L, 1);
3478-    GLuint shader = effect_shader_load_string(source);
3479-    if (!shader) {
3480-        return luaL_error(L, "Failed to compile effect shader from string");
3481-    }
3482-    lua_pushinteger(L, (lua_Integer)shader);
3483-    return 1;
3484-}
3485-
3486:static int l_shader_destroy(lua_State* L) {
3487-    GLuint shader = (GLuint)luaL_checkinteger(L, 1);
3488-    effect_shader_destroy(shader);
3489-    return 0;
3490-}
3491-
3492-// Deferred uniform setting Lua bindings (queued to layer's command list)
3493-static int l_layer_shader_set_float(lua_State* L) {
3494-    Layer* layer = (Layer*)lua_touserdata(L, 1);
3495-    GLuint shader = (GLuint)luaL_checkinteger(L, 2);
... [15 more lines]

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:
  3462→    return 0;
  3463→}
  3464→
  3465→// Effect shader Lua bindings
  3466→static int l_shader_load_file(lua_State* L) {
  3467→    const char* path = luaL_checkstring(L, 1);
  3468→    GLuint shader = effect_shader_load_file(path);
  3469→    if (!shader) {
  3470→        return luaL_error(L, "Failed to load effect shader: %s", path);
  3471→    }
  3472→    // Register for cleanup on shutdown
  3473→    if (effect_shader_count < MAX_EFFECT_SHADERS) {
  3474→        effect_shader_registry[effect_shader_count++] = shader;
  3475→    }
  3476→    lua_pushinteger(L, (lua_Integer)shader);
  3477→    return 1;
  3478→}
  3479→
  3480→static int l_shader_load_string(lua_State* L) {
  3481→    const char* source = luaL_checkstring(L, 1);
  3482→    GLuint shader = effect_shader_load_string(source);
  3483→    if (!shader) {
  3484→        return luaL_error(L, "Failed to compile effect shader from string");
  3485→    }
  3486→    // Register for cleanup on shutdown
  3487→    if (effect_shader_count < MAX_EFFECT_SHADERS) {
  3488→        effect_shader_registry[effect_shader_count++] = shader;
  3489→    }
  3490→    lua_pushinteger(L, (lua_Integer)shader);
... [19 more lines]

6214:static void engine_shutdown(void) {
6215-    // Game rendering resources
6216-    if (vbo) { glDeleteBuffers(1, &vbo); vbo = 0; }
6217-    if (vao) { glDeleteVertexArrays(1, &vao); vao = 0; }
6218-    if (shader_program) { glDeleteProgram(shader_program); shader_program = 0; }
6219-    // Layers
6220-    for (int i = 0; i < layer_count; i++) {
6221-        layer_destroy(layer_registry[i]);
6222-        free(layer_names[i]);
6223-        layer_registry[i] = NULL;
6224-        layer_names[i] = NULL;
6225-    }
6226-    layer_count = 0;
6227-    // Screen blit resources
6228-    if (screen_vbo) { glDeleteBuffers(1, &screen_vbo); screen_vbo = 0; }
6229-    if (screen_vao) { glDeleteVertexArrays(1, &screen_vao); screen_vao = 0; }
6230-    if (screen_shader) { glDeleteProgram(screen_shader); screen_shader = 0; }
6231-    // Audio
6232-    if (audio_initialized) {
6233-        sound_cleanup_all();
6234-        ma_engine_uninit(&audio_engine);
6235-        audio_initialized = false;
6236-    }
6237-    // Physics
6238-    if (physics_initialized) {
6239-        b2DestroyWorld(physics_world);
6240-        physics_initialized = false;
6241-    }
6242-    // Other resources
6243-    if (L) { lua_close(L); L = NULL; }
... [1 more lines]

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:
  6210→    luaL_traceback(L, L, msg, 1);
  6211→    return 1;
  6212→}
  6213→
  6214→static void engine_shutdown(void) {
  6215→    // Game rendering resources
  6216→    if (vbo) { glDeleteBuffers(1, &vbo); vbo = 0; }
  6217→    if (vao) { glDeleteVertexArrays(1, &vao); vao = 0; }
  6218→    if (shader_program) { glDeleteProgram(shader_program); shader_program = 0; }
  6219→    // Layers
  6220→    for (int i = 0; i < layer_count; i++) {
  6221→        layer_destroy(layer_registry[i]);
  6222→        free(layer_names[i]);
  6223→        layer_registry[i] = NULL;
  6224→        layer_names[i] = NULL;
  6225→    }
  6226→    layer_count = 0;
  6227→    // Textures
  6228→    for (int i = 0; i < texture_count; i++) {
  6229→        texture_destroy(texture_registry[i]);
  6230→        texture_registry[i] = NULL;
  6231→    }
  6232→    texture_count = 0;
  6233→    // Effect shaders
  6234→    for (int i = 0; i < effect_shader_count; i++) {
  6235→        effect_shader_destroy(effect_shader_registry[i]);
  6236→        effect_shader_registry[i] = 0;
  6237→    }
  6238→    effect_shader_count = 0;
... [21 more lines]

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

5132:#define PI 3.14159265358979323846

5128→}
  5129→
  5130→// Random Lua bindings
  5131→#define RNG_METATABLE "Anchor.RNG"
  5132→#define PI 3.14159265358979323846
  5133→
  5134→// Helper to get RNG from optional last argument, or global
  5135→static PCG32* get_rng(lua_State* L, int arg) {
  5136→    if (lua_isuserdata(L, arg)) {
  5137→        return (PCG32*)luaL_checkudata(L, arg, RNG_METATABLE);

76→// Command types
    77→enum {
    78→    COMMAND_RECTANGLE = 0,
    79→    COMMAND_CIRCLE,
    80→    COMMAND_SPRITE,
    81→    COMMAND_GLYPH,              // Font glyph with custom UVs (uses flash_color for packed UVs)
    82→    COMMAND_APPLY_SHADER,       // Post-process layer through a shader
    83→    COMMAND_SET_UNIFORM_FLOAT,  // Set float uniform on shader
    84→    COMMAND_SET_UNIFORM_VEC2,   // Set vec2 uniform on shader
    85→    COMMAND_SET_UNIFORM_VEC4,   // Set vec4 uniform on shader
    86→    COMMAND_SET_UNIFORM_INT,    // Set int uniform on shader
    87→};
    88→
    89→// Blend modes
    90→enum {

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>
... [50 more lines]

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:
    58→#define PHYSICS_RATE (1.0 / 120.0)  // 120 Hz physics/input timestep
    59→#define RENDER_RATE  (1.0 / 60.0)   // 60 Hz render cap (for chunky pixel movement)
    60→#define MAX_UPDATES 10              // Cap on fixed steps per frame (prevents spiral of death)
    61→
    62→// VSync snapping - snap delta times within 0.2ms of common refresh rates
    63→// This prevents accumulator drift from timer jitter
    64→#define VSYNC_SNAP_TOLERANCE 0.0002
    65→
    66→// Mathematical constants
    67→#define PI 3.14159265358979323846
    68→
    69→// Forward declaration for timing resync (defined with main loop state)
    70→static void timing_resync(void);
    71→
    72→// Transform stack depth
    73→#define MAX_TRANSFORM_DEPTH 32
    74→
    75→// Command queue capacity (fixed size, allocated once)
    76→// 16384 commands × ~64 bytes = ~1MB per layer

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:
  5129→    }
  5130→    return 1;
  5131→}
  5132→
  5133→// Random Lua bindings
  5134→#define RNG_METATABLE "Anchor.RNG"
  5135→
  5136→// Helper to get RNG from optional last argument, or global
  5137→static PCG32* get_rng(lua_State* L, int arg) {
  5138→    if (lua_isuserdata(L, arg)) {
  5139→        return (PCG32*)luaL_checkudata(L, arg, RNG_METATABLE);
  5140→    }

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

anchor.c
src/anchor.c(617): 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(813): 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(1587): 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(1581): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
src/anchor.c(1973): 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(2251): 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(2257): 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(2367): 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(2376): 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(2470): 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(2472): 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(3158): 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.
src/anchor.c(3638): 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.
gl.c
Generating Code...
LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
Build successful: build/anchor.exe

5004:static int l_physics_raycast(lua_State* L) {
5005-    float x1 = (float)luaL_checknumber(L, 1) / pixels_per_meter;
5006-    float y1 = (float)luaL_checknumber(L, 2) / pixels_per_meter;
5007-    float x2 = (float)luaL_checknumber(L, 3) / pixels_per_meter;
5008-    float y2 = (float)luaL_checknumber(L, 4) / pixels_per_meter;
5009-    luaL_checktype(L, 5, LUA_TTABLE);
5010-
5011-    uint64_t mask = build_query_mask_from_table(L, 5);
5012-    if (mask == 0) {
5013-        lua_pushnil(L);
5014-        return 1;
5015-    }
5016-
5017-    b2Vec2 origin = {x1, y1};
5018-    b2Vec2 translation = {x2 - x1, y2 - y1};
5019-
5020-    b2QueryFilter filter = b2DefaultQueryFilter();
5021-    filter.categoryBits = UINT64_MAX;
5022-    filter.maskBits = mask;
5023-
5024-    b2RayResult result = b2World_CastRayClosest(physics_world, origin, translation, filter);
5025-
5026-    if (!result.hit) {
5027-        lua_pushnil(L);
5028-        return 1;
5029-    }
5030-
5031-    // Check tag match (CastRayClosest doesn't do custom filtering)
5032-    int tag_index = (int)(uintptr_t)b2Shape_GetUserData(result.shapeId);
5033-    PhysicsTag* tag = physics_tag_get(tag_index);
... [21 more lines]

4970→    return 1;
  4971→}
  4972→
  4973→// Raycast context for collecting all hits
  4974→typedef struct {
  4975→    b2ShapeId shapes[MAX_QUERY_RESULTS];
  4976→    b2Vec2 points[MAX_QUERY_RESULTS];
  4977→    b2Vec2 normals[MAX_QUERY_RESULTS];
  4978→    float fractions[MAX_QUERY_RESULTS];
  4979→    int count;
  4980→    uint64_t tag_mask;
  4981→} RaycastContext;
  4982→
  4983→static float raycast_all_callback(b2ShapeId shape_id, b2Vec2 point, b2Vec2 normal, float fraction, void* context) {
  4984→    RaycastContext* ctx = (RaycastContext*)context;
  4985→    if (ctx->count >= MAX_QUERY_RESULTS) return 0.0f;  // Stop
  4986→
  4987→    // Check if this shape's tag matches our query
  4988→    int tag_index = (int)(uintptr_t)b2Shape_GetUserData(shape_id);
  4989→    PhysicsTag* tag = physics_tag_get(tag_index);
  4990→    if (!tag) return 1.0f;  // Continue
  4991→
  4992→    if ((tag->category_bit & ctx->tag_mask) == 0) return 1.0f;  // Skip, continue
  4993→
  4994→    ctx->shapes[ctx->count] = shape_id;
  4995→    ctx->points[ctx->count] = point;
  4996→    ctx->normals[ctx->count] = normal;
  4997→    ctx->fractions[ctx->count] = fraction;
  4998→    ctx->count++;
  4999→
... [10 more lines]

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:
  4969→    }
  4970→    return 1;
  4971→}
  4972→
  4973→// Raycast context for finding closest matching hit
  4974→typedef struct {
  4975→    b2ShapeId shape;
  4976→    b2Vec2 point;
  4977→    b2Vec2 normal;
  4978→    float fraction;
  4979→    bool hit;
  4980→    uint64_t tag_mask;
  4981→} RaycastClosestContext;
  4982→
  4983→static float raycast_closest_callback(b2ShapeId shape_id, b2Vec2 point, b2Vec2 normal, float fraction, void* context) {
  4984→    RaycastClosestContext* ctx = (RaycastClosestContext*)context;
  4985→
  4986→    // Check if this shape's tag matches our query
  4987→    int tag_index = (int)(uintptr_t)b2Shape_GetUserData(shape_id);
  4988→    PhysicsTag* tag = physics_tag_get(tag_index);
  4989→    if (!tag) return 1.0f;  // Continue
  4990→
  4991→    if ((tag->category_bit & ctx->tag_mask) == 0) return 1.0f;  // Skip, continue
  4992→
  4993→    // This hit matches - record it and clip the ray to this distance
  4994→    ctx->shape = shape_id;
  4995→    ctx->point = point;
  4996→    ctx->normal = normal;
  4997→    ctx->fraction = fraction;
... [38 more lines]

5033→// physics_raycast(x1, y1, x2, y2, tags) -> {body, shape, point_x, point_y, normal_x, normal_y, fraction} or nil
  5034→static int l_physics_raycast(lua_State* L) {
  5035→    float x1 = (float)luaL_checknumber(L, 1) / pixels_per_meter;
  5036→    float y1 = (float)luaL_checknumber(L, 2) / pixels_per_meter;
  5037→    float x2 = (float)luaL_checknumber(L, 3) / pixels_per_meter;
  5038→    float y2 = (float)luaL_checknumber(L, 4) / pixels_per_meter;
  5039→    luaL_checktype(L, 5, LUA_TTABLE);
  5040→
  5041→    uint64_t mask = build_query_mask_from_table(L, 5);
  5042→    if (mask == 0) {
  5043→        lua_pushnil(L);
  5044→        return 1;
  5045→    }
  5046→
  5047→    b2Vec2 origin = {x1, y1};
  5048→    b2Vec2 translation = {x2 - x1, y2 - y1};
  5049→
  5050→    b2QueryFilter filter = b2DefaultQueryFilter();
  5051→    filter.categoryBits = UINT64_MAX;
  5052→    filter.maskBits = mask;
  5053→
  5054→    b2RayResult result = b2World_CastRayClosest(physics_world, origin, translation, filter);
  5055→
  5056→    if (!result.hit) {
  5057→        lua_pushnil(L);
  5058→        return 1;
  5059→    }
  5060→
  5061→    // Check tag match (CastRayClosest doesn't do custom filtering)
  5062→    int tag_index = (int)(uintptr_t)b2Shape_GetUserData(result.shapeId);
... [15 more lines]

5075→    lua_setfield(L, -2, "body");
  5076→
  5077→    // shape
  5078→    b2ShapeId* shape_ud = (b2ShapeId*)lua_newuserdata(L, sizeof(b2ShapeId));
  5079→    *shape_ud = result.shapeId;
  5080→    lua_setfield(L, -2, "shape");
  5081→
  5082→    // point (convert back to pixels)
  5083→    lua_pushnumber(L, result.point.x * pixels_per_meter);
  5084→    lua_setfield(L, -2, "point_x");
  5085→    lua_pushnumber(L, result.point.y * pixels_per_meter);
  5086→    lua_setfield(L, -2, "point_y");
  5087→
  5088→    // normal
  5089→    lua_pushnumber(L, result.normal.x);
  5090→    lua_setfield(L, -2, "normal_x");
  5091→    lua_pushnumber(L, result.normal.y);
  5092→    lua_setfield(L, -2, "normal_y");
  5093→
  5094→    // fraction
  5095→    lua_pushnumber(L, result.fraction);
  5096→    lua_setfield(L, -2, "fraction");
  5097→
  5098→    return 1;
  5099→}
  5100→
  5101→// physics_raycast_all(x1, y1, x2, y2, tags) -> array of {body, shape, point_x, point_y, normal_x, normal_y, fraction}
  5102→static int l_physics_raycast_all(lua_State* L) {
  5103→    float x1 = (float)luaL_checknumber(L, 1) / pixels_per_meter;
  5104→    float y1 = (float)luaL_checknumber(L, 2) / pixels_per_meter;

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:
  5029→
  5030→    return 1.0f;  // Continue to find all hits
  5031→}
  5032→
  5033→// physics_raycast(x1, y1, x2, y2, tags) -> {body, shape, point_x, point_y, normal_x, normal_y, fraction} or nil
  5034→// Returns the closest hit that matches the tag filter
  5035→static int l_physics_raycast(lua_State* L) {
  5036→    float x1 = (float)luaL_checknumber(L, 1) / pixels_per_meter;
  5037→    float y1 = (float)luaL_checknumber(L, 2) / pixels_per_meter;
  5038→    float x2 = (float)luaL_checknumber(L, 3) / pixels_per_meter;
  5039→    float y2 = (float)luaL_checknumber(L, 4) / pixels_per_meter;
  5040→    luaL_checktype(L, 5, LUA_TTABLE);
  5041→
  5042→    uint64_t mask = build_query_mask_from_table(L, 5);
  5043→    if (mask == 0) {
  5044→        lua_pushnil(L);
  5045→        return 1;
  5046→    }
  5047→
  5048→    RaycastClosestContext ctx = {0};
  5049→    ctx.tag_mask = mask;
  5050→    ctx.hit = false;
  5051→
  5052→    b2Vec2 origin = {x1, y1};
  5053→    b2Vec2 translation = {x2 - x1, y2 - y1};
  5054→
  5055→    b2QueryFilter filter = b2DefaultQueryFilter();
  5056→    filter.categoryBits = UINT64_MAX;
  5057→    filter.maskBits = mask;
... [43 more lines]

5112:    RaycastContext ctx = {0};

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:
  5108→        lua_newtable(L);
  5109→        return 1;
  5110→    }
  5111→
  5112→    RaycastAllContext ctx = {0};
  5113→    ctx.tag_mask = mask;
  5114→
  5115→    b2Vec2 origin = {x1, y1};
  5116→    b2Vec2 translation = {x2 - x1, y2 - y1};

anchor.c
src/anchor.c(617): 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(813): 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(1587): 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(1581): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
src/anchor.c(1973): 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(2251): 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(2257): 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(2367): 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(2376): 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(2470): 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(2472): 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(3158): 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.
src/anchor.c(3638): 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.
gl.c
Generating Code...
LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
Build successful: build/anchor.exe

6907 E:/a327ex/Anchor/engine/src/anchor.c

57:// Timing configuration
62:// VSync snapping - snap delta times within 0.2ms of common refresh rates
63:// This prevents accumulator drift from timer jitter
66:// Mathematical constants
69:// Forward declaration for timing resync (defined with main loop state)
72:// Transform stack depth
75:// Command queue capacity (fixed size, allocated once)
79:// Command types
92:// Blend modes
98:// DrawCommand — stores one deferred draw call
99:// Explicitly padded to 64 bytes for consistent memory layout across platforms
101:// Coordinate conventions:
136:// Verify DrawCommand is exactly 64 bytes (compile-time check)
143:// Layer
170:// Audio globals (declared early so Sound functions can use them)
180:// Physics globals
186:// Physics tag system
201:// Find tag index by name, returns -1 if not found
211:// Get tag by index (NULL if invalid)
217:// Get tag by name (NULL if not found)
224:// Physics event buffers
227:// Contact begin event (two shapes started touching)
237:// Contact end event (two shapes stopped touching)
247:// Hit event (two shapes collided with speed above threshold)
262:// Sensor begin event (shape entered sensor)
272:// Sensor end event (shape left sensor)
282:// Event buffers
298:// Random (PCG32)
299:// PCG32 - Permuted Congruential Generator (32-bit output, 64-bit state)
300:// Fast, excellent statistical quality, small state for easy replay save/restore
... [198 more lines]

5700→}
  5701→
  5702→static int l_input_stop_capture(lua_State* L) {
  5703→    (void)L;
  5704→    input_stop_capture();
  5705→    return 0;
  5706→}
  5707→
  5708→static int l_input_unbind(lua_State* L) {
  5709→    const char* action = luaL_checkstring(L, 1);
  5710→    const char* control = luaL_checkstring(L, 2);
  5711→    lua_pushboolean(L, input_unbind_control(action, control));
  5712→    return 1;
  5713→}
  5714→
  5715→static int l_input_unbind_all(lua_State* L) {
  5716→    const char* action = luaL_checkstring(L, 1);
  5717→    input_unbind_all_controls(action);
  5718→    return 0;
  5719→}
  5720→
  5721→static int l_input_bind_all(lua_State* L) {
  5722→    (void)L;  // Unused
  5723→    input_bind_all_defaults();
  5724→    return 0;
  5725→}
  5726→
  5727→static int l_input_get_axis(lua_State* L) {
  5728→    const char* negative = luaL_checkstring(L, 1);
  5729→    const char* positive = luaL_checkstring(L, 2);
... [70 more lines]

File created successfully at: E:\a327ex\Anchor\reference\anchor-structure-analysis.md

Command running in background with ID: b3130e2. Output is being written to: C:\Users\adn\AppData\Local\Temp\claude\E--a327ex-Anchor\tasks\b3130e2.output

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

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

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:
     1→/*
     2→ * Anchor Engine - Single-file C implementation
     3→ * SDL2 + OpenGL 3.3 (WebGL 2.0) + Lua 5.4 + Box2D 3.x
     4→ *
     5→ * FILE STRUCTURE:
     6→ *
     7→ * [Lines 1-200]      Includes, constants, core structs (DrawCommand, Layer)
     8→ * [Lines 200-500]    Physics foundation (tags, events, PCG32 random)
     9→ * [Lines 500-1100]   Resources (Texture, Font, Sound, Music)
    10→ * [Lines 1100-1550]  Layer system (FBO, transforms, command queue, batching)
    11→ * [Lines 1550-2750]  Input system (keyboard, mouse, gamepad, actions, chords, sequences, holds)
    12→ * [Lines 2750-3250]  Rendering pipeline (shader execution, command processing)
    13→ * [Lines 3250-5250]  Lua bindings: Rendering, Physics
    14→ * [Lines 5250-5900]  Lua bindings: Random, Input
    15→ * [Lines 5900-6100]  Lua registration (register_lua_bindings)
    16→ * [Lines 6100-6350]  Shader sources and compilation
    17→ * [Lines 6350-6950]  Main loop, initialization, shutdown
    18→ */
    19→
    20→#include <stdio.h>
    21→#include <stdlib.h>
    22→#include <stdbool.h>
    23→#include <string.h>
    24→#include <math.h>

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

60→#include <miniaudio.h>
    61→
    62→#include <box2d.h>
    63→
    64→#define WINDOW_TITLE "Anchor"
    65→#define GAME_WIDTH 480
    66→#define GAME_HEIGHT 270
    67→#define INITIAL_SCALE 3
    68→
    69→// Timing configuration
    70→#define PHYSICS_RATE (1.0 / 120.0)  // 120 Hz physics/input timestep
    71→#define RENDER_RATE  (1.0 / 60.0)   // 60 Hz render cap (for chunky pixel movement)
    72→#define MAX_UPDATES 10              // Cap on fixed steps per frame (prevents spiral of death)
    73→
    74→// VSync snapping - snap delta times within 0.2ms of common refresh rates
    75→// This prevents accumulator drift from timer jitter
    76→#define VSYNC_SNAP_TOLERANCE 0.0002
    77→
    78→// Mathematical constants
    79→#define PI 3.14159265358979323846

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:
    58→#define MA_ENABLE_VORBIS
    59→#define MINIAUDIO_IMPLEMENTATION
    60→#include <miniaudio.h>
    61→
    62→#include <box2d.h>
    63→
    64→// ============================================================================
    65→// CONFIGURATION & CONSTANTS
    66→// ============================================================================
    67→
    68→#define WINDOW_TITLE "Anchor"
    69→#define GAME_WIDTH 480
    70→#define GAME_HEIGHT 270
    71→#define INITIAL_SCALE 3
    72→

183-    uint8_t current_blend;
184-} Layer;
185-
186:// Audio globals (declared early so Sound functions can use 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:
   179→    int command_count;
   180→    int command_capacity;
   181→
   182→    // Current state
   183→    uint8_t current_blend;
   184→} Layer;
   185→
   186→// ============================================================================
   187→// PHYSICS & AUDIO GLOBALS
   188→// Physics: Tag system, event buffers, world state
   189→// Audio: miniaudio engine, sound pool
   190→// ============================================================================
   191→
   192→// Audio globals (declared early so Sound functions can use them)
   193→static ma_engine audio_engine;
   194→static bool audio_initialized = false;
   195→static float sound_master_volume = 1.0f;
   196→static float music_master_volume = 1.0f;

472-    }
473-}
474-
475:// Texture

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:
   468→        ev->sensor_body = b2Shape_IsValid(e->sensorShapeId) ? b2Shape_GetBody(e->sensorShapeId) : (b2BodyId){0};
   469→        ev->visitor_body = b2Shape_IsValid(e->visitorShapeId) ? b2Shape_GetBody(e->visitorShapeId) : (b2BodyId){0};
   470→        ev->sensor_tag = sensor_tag;
   471→        ev->visitor_tag = visitor_tag;
   472→    }
   473→}
   474→
   475→// ============================================================================
   476→// RESOURCES: TEXTURE, FONT, AUDIO
   477→// Loading, management, and playback of game assets
   478→// ============================================================================
   479→
   480→// Texture
   481→typedef struct {
   482→    GLuint id;
   483→    int width;
   484→    int height;

1041-}
1042-#endif
1043-
1044:// Create a layer with FBO at specified resolution

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:
  1037→        ma_engine_start(&audio_engine);
  1038→        audio_needs_unlock = false;
  1039→        printf("Audio context unlocked\n");
  1040→    }
  1041→}
  1042→#endif
  1043→
  1044→// ============================================================================
  1045→// LAYER SYSTEM
  1046→// FBO management, transform stack, command queue, drawing primitives
  1047→// ============================================================================
  1048→
  1049→// Create a layer with FBO at specified resolution
  1050→static Layer* layer_create(int width, int height) {
  1051→    Layer* layer = (Layer*)calloc(1, sizeof(Layer));
  1052→    if (!layer) return NULL;
  1053→

1325-    layer->current_blend = mode;
1326-}
1327-
1328:// Batch rendering

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→}
  1322→
  1323→// Set the current blend mode for subsequent commands
  1324→static void layer_set_blend_mode(Layer* layer, uint8_t mode) {
  1325→    layer->current_blend = mode;
  1326→}
  1327→
  1328→// ============================================================================
  1329→// BATCH RENDERING
  1330→// Vertex batching, matrix math, SDF shape rendering
  1331→// ============================================================================
  1332→
  1333→// Batch rendering
  1334→#define MAX_BATCH_VERTICES 6000  // 1000 quads * 6 vertices
  1335→#define VERTEX_FLOATS 16         // x, y, u, v, r, g, b, a, type, shape[4], addR, addG, addB
  1336→
  1337→// Shape types for uber-shader

1531-static LayerDrawCommand layer_draw_queue[MAX_LAYER_DRAWS];
1532-static int layer_draw_count = 0;
1533-
1534:// Input state - 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:
  1527→    float x, y;  // Offset in game coordinates
  1528→} LayerDrawCommand;
  1529→
  1530→#define MAX_LAYER_DRAWS 64
  1531→static LayerDrawCommand layer_draw_queue[MAX_LAYER_DRAWS];
  1532→static int layer_draw_count = 0;
  1533→
  1534→// ============================================================================
  1535→// INPUT SYSTEM
  1536→// Keyboard, mouse, gamepad state; action bindings; chords, sequences, holds
  1537→// ============================================================================
  1538→
  1539→// Input state - Keyboard
  1540→static bool keys_current[SDL_NUM_SCANCODES] = {0};
  1541→static bool keys_previous[SDL_NUM_SCANCODES] = {0};
  1542→
  1543→// Input state - Mouse

2716-    *out_y = y;
2717-}
2718-
2719:// Queue a layer to be drawn to screen at given offset

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:
  2712→        y /= len;
  2713→    }
  2714→
  2715→    *out_x = x;
  2716→    *out_y = y;
  2717→}
  2718→
  2719→// ============================================================================
  2720→// RENDERING PIPELINE
  2721→// Layer draw queue, shader application, command processing
  2722→// ============================================================================
  2723→
  2724→// Queue a layer to be drawn to screen at given offset
  2725→static void layer_queue_draw(Layer* layer, float x, float y) {
  2726→    if (layer_draw_count >= MAX_LAYER_DRAWS) return;
  2727→    layer_draw_queue[layer_draw_count].layer = layer;
  2728→    layer_draw_queue[layer_draw_count].x = x;

3214-static GLuint effect_shader_load_string(const char* frag_source);
3215-static void effect_shader_destroy(GLuint shader);
3216-
3217:// 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:
  3210→}
  3211→
  3212→// Forward declarations for effect shader functions (defined after shader sources)
  3213→static GLuint effect_shader_load_file(const char* path);
  3214→static GLuint effect_shader_load_string(const char* frag_source);
  3215→static void effect_shader_destroy(GLuint shader);
  3216→
  3217→// ============================================================================
  3218→// LUA BINDINGS: RENDERING
  3219→// Layer, texture, font, audio, shaders
  3220→// ============================================================================
  3221→
  3222→// Lua bindings
  3223→static int l_layer_create(lua_State* L) {
  3224→    const char* name = luaL_checkstring(L, 1);
  3225→    Layer* layer = layer_get_or_create(name);
  3226→    if (!layer) {

3629-    return 0;
3630-}
3631-
3632:// Physics 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:
  3625→
  3626→static int l_layer_reset_effects(lua_State* L) {
  3627→    Layer* layer = (Layer*)lua_touserdata(L, 1);
  3628→    layer_reset_effects(layer);
  3629→    return 0;
  3630→}
  3631→
  3632→// ============================================================================
  3633→// LUA BINDINGS: PHYSICS
  3634→// World, bodies, shapes, events, spatial queries, raycasting
  3635→// ============================================================================
  3636→
  3637→// Physics Lua bindings
  3638→static int l_physics_init(lua_State* L) {
  3639→    if (physics_initialized) {
  3640→        return 0;  // Already initialized
  3641→    }

5214-    return 1;
5215-}
5216-
5217:// Random 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:
  5210→        lua_setfield(L, -2, "fraction");
  5211→
  5212→        lua_rawseti(L, -2, i + 1);
  5213→    }
  5214→    return 1;
  5215→}
  5216→
  5217→// ============================================================================
  5218→// LUA BINDINGS: RANDOM
  5219→// PCG32 RNG, distributions, Perlin noise
  5220→// ============================================================================
  5221→
  5222→// Random Lua bindings
  5223→#define RNG_METATABLE "Anchor.RNG"
  5224→
  5225→// Helper to get RNG from optional last argument, or global
  5226→static PCG32* get_rng(lua_State* L, int arg) {

5517-    return 1;
5518-}
5519-
5520:// Input 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:
  5513→
  5514→    // stb_perlin_noise3 returns [-1, 1]
  5515→    float result = stb_perlin_noise3(x, y, z, 0, 0, 0);
  5516→    lua_pushnumber(L, result);
  5517→    return 1;
  5518→}
  5519→
  5520→// ============================================================================
  5521→// LUA BINDINGS: INPUT
  5522→// Keyboard, mouse, gamepad, actions, chords, sequences, holds, capture
  5523→// ============================================================================
  5524→
  5525→// Input Lua bindings
  5526→static int l_key_is_down(lua_State* L) {
  5527→    const char* key_name = luaL_checkstring(L, 1);
  5528→    SDL_Scancode scancode = key_name_to_scancode(key_name);
  5529→    if (scancode == SDL_SCANCODE_UNKNOWN) {

5839-    return 0;
5840-}
5841-
5842:static void register_lua_bindings(lua_State* L) {

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:
  5835→    float dz = (float)luaL_checknumber(L, 1);
  5836→    if (dz < 0) dz = 0;
  5837→    if (dz > 1) dz = 1;
  5838→    gamepad_deadzone = dz;
  5839→    return 0;
  5840→}
  5841→
  5842→// ============================================================================
  5843→// LUA REGISTRATION
  5844→// Binds all C functions to Lua global namespace
  5845→// ============================================================================
  5846→
  5847→static void register_lua_bindings(lua_State* L) {
  5848→    // Create RNG metatable (for random_create instances)
  5849→    luaL_newmetatable(L, RNG_METATABLE);
  5850→    lua_pop(L, 1);
  5851→

6055-    dt_history_filled = false;
6056-}
6057-
6058:// Shader headers - prepended to all shaders based on platform

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:
  6051→    last_time = SDL_GetPerformanceCounter();
  6052→    // Reset dt averaging
  6053→    for (int i = 0; i < DT_HISTORY_COUNT; i++) dt_history[i] = 0;
  6054→    dt_history_index = 0;
  6055→    dt_history_filled = false;
  6056→}
  6057→
  6058→// ============================================================================
  6059→// SHADER SOURCES & COMPILATION
  6060→// GLSL source strings, compile/link utilities, effect shader loading
  6061→// ============================================================================
  6062→
  6063→// Shader headers - prepended to all shaders based on platform
  6064→#ifdef __EMSCRIPTEN__
  6065→    #define SHADER_HEADER_VERT "#version 300 es\n"
  6066→    #define SHADER_HEADER_FRAG "#version 300 es\nprecision mediump float;\n"
  6067→#else

6310-    }
6311-}
6312-
6313:// Error handler that adds stack trace

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:
  6306→// Destroy an effect shader program
  6307→static void effect_shader_destroy(GLuint shader) {
  6308→    if (shader) {
  6309→        glDeleteProgram(shader);
  6310→    }
  6311→}
  6312→
  6313→// ============================================================================
  6314→// MAIN LOOP & INITIALIZATION
  6315→// Engine lifecycle: startup, frame iteration, shutdown
  6316→// ============================================================================
  6317→
  6318→// Error handler that adds stack trace
  6319→static int traceback(lua_State* L) {
  6320→    const char* msg = lua_tostring(L, 1);
  6321→    luaL_traceback(L, L, msg, 1);
  6322→    return 1;

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

86:static void timing_resync(void);
1247:static bool layer_push(Layer* layer, float x, float y, float r, float sx, float sy);
1248:static void layer_pop(Layer* layer);
3213:static GLuint effect_shader_load_file(const char* path);
3214:static GLuint effect_shader_load_string(const char* frag_source);
3215:static void effect_shader_destroy(GLuint shader);

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

6048:static void timing_resync(void) {

3213:static GLuint effect_shader_load_file(const char* path);
6295:static GLuint effect_shader_load_file(const char* path) {

82→// Mathematical constants
    83→#define PI 3.14159265358979323846
    84→
    85→// Forward declaration for timing resync (defined with main loop state)
    86→static void timing_resync(void);
    87→
    88→// Transform stack depth
    89→#define MAX_TRANSFORM_DEPTH 32
    90→
    91→// Command queue capacity (fixed size, allocated once)

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:
    81→
    82→// Mathematical constants
    83→#define PI 3.14159265358979323846
    84→
    85→// Forward declaration (defined at ~line 6050 in MAIN LOOP section)
    86→static void timing_resync(void);
    87→
    88→// Transform stack depth
    89→#define MAX_TRANSFORM_DEPTH 32
    90→

1244→}
  1245→
  1246→// Forward declarations for transform stack (defined later)
  1247→static bool layer_push(Layer* layer, float x, float y, float r, float sx, float sy);
  1248→static void layer_pop(Layer* layer);
  1249→
  1250→// Record a glyph command (top-left positioned, with custom UVs from font atlas)
  1251→// x, y is top-left corner of glyph; w, h is glyph size; UVs are atlas coordinates
  1252→static void layer_add_glyph(Layer* layer, GLuint atlas_texture, float x, float y, float w, float h,
  1253→                            float u0, float v0, float u1, float v1, uint32_t color) {
  1254→    DrawCommand* cmd = layer_add_command(layer);
  1255→    if (!cmd) return;

1247:static bool layer_push(Layer* layer, float x, float y, float r, float sx, float sy);
1374:static bool layer_push(Layer* layer, float x, float y, float r, float sx, float sy) {

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:
  1242→    *u = (packed & 0xFFFF) / 65535.0f;
  1243→    *v = ((packed >> 16) & 0xFFFF) / 65535.0f;
  1244→}
  1245→
  1246→// Forward declarations for transform stack (defined at ~line 1375)
  1247→static bool layer_push(Layer* layer, float x, float y, float r, float sx, float sy);
  1248→static void layer_pop(Layer* layer);
  1249→
  1250→// Record a glyph command (top-left positioned, with custom UVs from font atlas)
  1251→// x, y is top-left corner of glyph; w, h is glyph size; UVs are atlas coordinates
  1252→static void layer_add_glyph(Layer* layer, GLuint atlas_texture, float x, float y, float w, float h,

3210→}
  3211→
  3212→// Forward declarations for effect shader functions (defined after shader sources)
  3213→static GLuint effect_shader_load_file(const char* path);
  3214→static GLuint effect_shader_load_string(const char* frag_source);
  3215→static void effect_shader_destroy(GLuint shader);
  3216→
  3217→// ============================================================================
  3218→// LUA BINDINGS: RENDERING
  3219→// Layer, texture, font, audio, shaders
  3220→// ============================================================================
  3221→

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:
  3208→    printf("Created layer: %s\n", name);
  3209→    return layer;
  3210→}
  3211→
  3212→// Forward declarations for effect shaders (defined at ~line 6290 in SHADER SOURCES section)
  3213→static GLuint effect_shader_load_file(const char* path);
  3214→static GLuint effect_shader_load_string(const char* frag_source);
  3215→static void effect_shader_destroy(GLuint shader);
  3216→
  3217→// ============================================================================
  3218→// LUA BINDINGS: RENDERING
  3219→// Layer, texture, font, audio, shaders

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

244-}
245-
246:// Physics event buffers
247-#define MAX_PHYSICS_EVENTS 256
248-
249-// Contact begin event (two shapes started touching)
250-typedef struct {
251-    b2BodyId body_a;

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:
   242→    if (index < 0) return NULL;
   243→    return &physics_tags[index];
   244→}
   245→
   246→// Physics event buffers
   247→// See also: Event processing at ~line 370, Lua query functions at ~line 4530
   248→#define MAX_PHYSICS_EVENTS 256
   249→
   250→// Contact begin event (two shapes started touching)
   251→typedef struct {
   252→    b2BodyId body_a;

4500-}
4501-
4502:// Step 9: Event query functions
4503-// Helper to check if two tag indices match (in either order)
4504-static bool tags_match(int event_tag_a, int event_tag_b, int query_tag_a, int query_tag_b) {
4505-    return (event_tag_a == query_tag_a && event_tag_b == query_tag_b) ||
4506-           (event_tag_a == query_tag_b && event_tag_b == query_tag_a);
4507-}

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:
  4498→           sensor_begin_count, sensor_end_count);
  4499→    return 0;
  4500→}
  4501→
  4502→// Event query functions
  4503→// See also: Event buffer structs at ~line 250, event processing at ~line 370
  4504→// Helper to check if two tag indices match (in either order)
  4505→static bool tags_match(int event_tag_a, int event_tag_b, int query_tag_a, int query_tag_b) {
  4506→    return (event_tag_a == query_tag_a && event_tag_b == query_tag_b) ||
  4507→           (event_tag_a == query_tag_b && event_tag_b == query_tag_a);
  4508→}

319-static int sensor_end_count = 0;
320-
321:// Random (PCG32)
322-// PCG32 - Permuted Congruential Generator (32-bit output, 64-bit state)
323-// Fast, excellent statistical quality, small state for easy replay save/restore
324-typedef struct {
325-    uint64_t state;      // RNG state (all values are possible)
326-    uint64_t increment;  // Controls which RNG sequence (stream) is selected (must be odd)

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:
   317→
   318→static PhysicsSensorEndEvent sensor_end_events[MAX_PHYSICS_EVENTS];
   319→static int sensor_end_count = 0;
   320→
   321→// Random (PCG32)
   322→// PCG32 - Permuted Congruential Generator (32-bit output, 64-bit state)
   323→// Fast, excellent statistical quality, small state for easy replay save/restore
   324→// See also: Lua bindings at ~line 5220
   325→typedef struct {
   326→    uint64_t state;      // RNG state (all values are possible)
   327→    uint64_t increment;  // Controls which RNG sequence (stream) is selected (must be odd)
   328→    uint64_t seed;       // Original seed (for random_get_seed)

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

5847→// Binds all C functions to Lua global namespace
  5848→// ============================================================================
  5849→
  5850→static void register_lua_bindings(lua_State* L) {
  5851→    // Create RNG metatable (for random_create instances)
  5852→    luaL_newmetatable(L, RNG_METATABLE);
  5853→    lua_pop(L, 1);
  5854→
  5855→    lua_register(L, "layer_create", l_layer_create);
  5856→    lua_register(L, "layer_rectangle", l_layer_rectangle);
  5857→    lua_register(L, "layer_circle", l_layer_circle);
  5858→    lua_register(L, "layer_push", l_layer_push);
  5859→    lua_register(L, "layer_pop", l_layer_pop);
  5860→    lua_register(L, "layer_draw_texture", l_layer_draw_texture);
  5861→    lua_register(L, "layer_set_blend_mode", l_layer_set_blend_mode);
  5862→    lua_register(L, "texture_load", l_texture_load);
  5863→    lua_register(L, "texture_unload", l_texture_unload);
  5864→    lua_register(L, "texture_get_width", l_texture_get_width);
  5865→    lua_register(L, "texture_get_height", l_texture_get_height);
  5866→    // Font
  5867→    lua_register(L, "font_load", l_font_load);
  5868→    lua_register(L, "font_unload", l_font_unload);
  5869→    lua_register(L, "font_get_height", l_font_get_height);
  5870→    lua_register(L, "font_get_text_width", l_font_get_text_width);
  5871→    lua_register(L, "font_get_char_width", l_font_get_char_width);
  5872→    lua_register(L, "font_get_glyph_metrics", l_font_get_glyph_metrics);
  5873→    lua_register(L, "layer_draw_text", l_layer_draw_text);
  5874→    lua_register(L, "layer_draw_glyph", l_layer_draw_glyph);
  5875→    // Audio
  5876→    lua_register(L, "sound_load", l_sound_load);
... [70 more lines]

5945→    lua_register(L, "physics_shape_set_friction", l_physics_shape_set_friction);
  5946→    lua_register(L, "physics_shape_get_friction", l_physics_shape_get_friction);
  5947→    lua_register(L, "physics_shape_set_restitution", l_physics_shape_set_restitution);
  5948→    lua_register(L, "physics_shape_get_restitution", l_physics_shape_get_restitution);
  5949→    lua_register(L, "physics_shape_is_valid", l_physics_shape_is_valid);
  5950→    lua_register(L, "physics_shape_get_body", l_physics_shape_get_body);
  5951→    lua_register(L, "physics_shape_set_density", l_physics_shape_set_density);
  5952→    lua_register(L, "physics_shape_get_density", l_physics_shape_get_density);
  5953→    // Physics - Additional body queries
  5954→    lua_register(L, "physics_get_body_type", l_physics_get_body_type);
  5955→    lua_register(L, "physics_get_mass", l_physics_get_mass);
  5956→    lua_register(L, "physics_is_awake", l_physics_is_awake);
  5957→    lua_register(L, "physics_set_awake", l_physics_set_awake);
  5958→    // Physics - Event debugging (Step 8)
  5959→    lua_register(L, "physics_debug_events", l_physics_debug_events);
  5960→    // Physics - Event queries (Step 9)
  5961→    lua_register(L, "physics_get_collision_begin", l_physics_get_collision_begin);
  5962→    lua_register(L, "physics_get_collision_end", l_physics_get_collision_end);
  5963→    lua_register(L, "physics_get_hit", l_physics_get_hit);
  5964→    lua_register(L, "physics_get_sensor_begin", l_physics_get_sensor_begin);
  5965→    lua_register(L, "physics_get_sensor_end", l_physics_get_sensor_end);
  5966→    // Physics - Spatial queries (Step 10)
  5967→    lua_register(L, "physics_query_point", l_physics_query_point);
  5968→    lua_register(L, "physics_query_circle", l_physics_query_circle);
  5969→    lua_register(L, "physics_query_aabb", l_physics_query_aabb);
  5970→    lua_register(L, "physics_query_box", l_physics_query_box);
  5971→    lua_register(L, "physics_query_capsule", l_physics_query_capsule);
  5972→    lua_register(L, "physics_query_polygon", l_physics_query_polygon);
  5973→    lua_register(L, "physics_raycast", l_physics_raycast);
  5974→    lua_register(L, "physics_raycast_all", l_physics_raycast_all);
... [50 more lines]

6023→    lua_register(L, "input_get_pressed_action", l_input_get_pressed_action);
  6024→    // Input - Gamepad
  6025→    lua_register(L, "gamepad_is_connected", l_gamepad_is_connected);
  6026→    lua_register(L, "gamepad_get_axis", l_gamepad_get_axis);
  6027→}
  6028→
  6029→// Main loop state (needed for emscripten)
  6030→static bool running = true;
  6031→static Uint64 perf_freq = 0;
  6032→static Uint64 last_time = 0;
  6033→static double physics_lag = 0.0;
  6034→static double render_lag = 0.0;
  6035→static Uint64 step = 0;
  6036→static double game_time = 0.0;
  6037→static Uint64 frame = 0;

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:
  5846→// LUA REGISTRATION
  5847→// Binds all C functions to Lua global namespace
  5848→// ============================================================================
  5849→
  5850→static void register_lua_bindings(lua_State* L) {
  5851→    // Create RNG metatable (for random_create instances)
  5852→    luaL_newmetatable(L, RNG_METATABLE);
  5853→    lua_pop(L, 1);
  5854→
  5855→    // --- Layer & Texture ---
  5856→    lua_register(L, "layer_create", l_layer_create);
  5857→    lua_register(L, "layer_rectangle", l_layer_rectangle);
  5858→    lua_register(L, "layer_circle", l_layer_circle);
  5859→    lua_register(L, "layer_push", l_layer_push);
  5860→    lua_register(L, "layer_pop", l_layer_pop);

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:
  5862→    lua_register(L, "layer_set_blend_mode", l_layer_set_blend_mode);
  5863→    lua_register(L, "texture_load", l_texture_load);
  5864→    lua_register(L, "texture_unload", l_texture_unload);
  5865→    lua_register(L, "texture_get_width", l_texture_get_width);
  5866→    lua_register(L, "texture_get_height", l_texture_get_height);
  5867→    // --- Font ---
  5868→    lua_register(L, "font_load", l_font_load);
  5869→    lua_register(L, "font_unload", l_font_unload);
  5870→    lua_register(L, "font_get_height", l_font_get_height);
  5871→    lua_register(L, "font_get_text_width", l_font_get_text_width);

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:
  5871→    lua_register(L, "font_get_text_width", l_font_get_text_width);
  5872→    lua_register(L, "font_get_char_width", l_font_get_char_width);
  5873→    lua_register(L, "font_get_glyph_metrics", l_font_get_glyph_metrics);
  5874→    lua_register(L, "layer_draw_text", l_layer_draw_text);
  5875→    lua_register(L, "layer_draw_glyph", l_layer_draw_glyph);
  5876→    // --- Audio ---
  5877→    lua_register(L, "sound_load", l_sound_load);
  5878→    lua_register(L, "sound_play", l_sound_play);
  5879→    lua_register(L, "sound_set_volume", l_sound_set_volume);
  5880→    lua_register(L, "music_load", l_music_load);

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:
  5884→    lua_register(L, "audio_set_master_pitch", l_audio_set_master_pitch);
  5885→    lua_register(L, "rgba", l_color_rgba);
  5886→    lua_register(L, "set_filter_mode", l_set_filter_mode);
  5887→    lua_register(L, "get_filter_mode", l_get_filter_mode);
  5888→    lua_register(L, "timing_resync", l_timing_resync);
  5889→    // --- Effect Shaders ---
  5890→    lua_register(L, "shader_load_file", l_shader_load_file);
  5891→    lua_register(L, "shader_load_string", l_shader_load_string);
  5892→    lua_register(L, "shader_destroy", l_shader_destroy);
  5893→    // Layer shader uniforms (deferred)

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:
  5888→    lua_register(L, "timing_resync", l_timing_resync);
  5889→    // --- Effect Shaders ---
  5890→    lua_register(L, "shader_load_file", l_shader_load_file);
  5891→    lua_register(L, "shader_load_string", l_shader_load_string);
  5892→    lua_register(L, "shader_destroy", l_shader_destroy);
  5893→    lua_register(L, "layer_shader_set_float", l_layer_shader_set_float);
  5894→    lua_register(L, "layer_shader_set_vec2", l_layer_shader_set_vec2);
  5895→    lua_register(L, "layer_shader_set_vec4", l_layer_shader_set_vec4);
  5896→    lua_register(L, "layer_shader_set_int", l_layer_shader_set_int);
  5897→    lua_register(L, "layer_apply_shader", l_layer_apply_shader);
  5898→    lua_register(L, "layer_draw", l_layer_draw);
  5899→    lua_register(L, "layer_get_texture", l_layer_get_texture);
  5900→    lua_register(L, "layer_reset_effects", l_layer_reset_effects);
  5901→    // --- Physics: World & Bodies ---
  5902→    lua_register(L, "physics_init", l_physics_init);
  5903→    lua_register(L, "physics_set_gravity", l_physics_set_gravity);
  5904→    lua_register(L, "physics_set_meter_scale", l_physics_set_meter_scale);
  5905→    lua_register(L, "physics_set_enabled", l_physics_set_enabled);

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:
  5917→    lua_register(L, "physics_body_is_valid", l_physics_body_is_valid);
  5918→    lua_register(L, "physics_add_circle", l_physics_add_circle);
  5919→    lua_register(L, "physics_add_box", l_physics_add_box);
  5920→    lua_register(L, "physics_add_capsule", l_physics_add_capsule);
  5921→    lua_register(L, "physics_add_polygon", l_physics_add_polygon);
  5922→    // --- Physics: Body Properties ---
  5923→    lua_register(L, "physics_set_position", l_physics_set_position);
  5924→    lua_register(L, "physics_set_angle", l_physics_set_angle);
  5925→    lua_register(L, "physics_set_transform", l_physics_set_transform);
  5926→    lua_register(L, "physics_get_velocity", l_physics_get_velocity);

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:
  5938→    lua_register(L, "physics_set_gravity_scale", l_physics_set_gravity_scale);
  5939→    lua_register(L, "physics_set_fixed_rotation", l_physics_set_fixed_rotation);
  5940→    lua_register(L, "physics_set_bullet", l_physics_set_bullet);
  5941→    lua_register(L, "physics_set_user_data", l_physics_set_user_data);
  5942→    lua_register(L, "physics_get_user_data", l_physics_get_user_data);
  5943→    // --- Physics: Shape Properties ---
  5944→    lua_register(L, "physics_shape_set_friction", l_physics_shape_set_friction);
  5945→    lua_register(L, "physics_shape_get_friction", l_physics_shape_get_friction);
  5946→    lua_register(L, "physics_shape_set_restitution", l_physics_shape_set_restitution);
  5947→    lua_register(L, "physics_shape_get_restitution", l_physics_shape_get_restitution);

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:
  5947→    lua_register(L, "physics_shape_get_restitution", l_physics_shape_get_restitution);
  5948→    lua_register(L, "physics_shape_is_valid", l_physics_shape_is_valid);
  5949→    lua_register(L, "physics_shape_get_body", l_physics_shape_get_body);
  5950→    lua_register(L, "physics_shape_set_density", l_physics_shape_set_density);
  5951→    lua_register(L, "physics_shape_get_density", l_physics_shape_get_density);
  5952→    // --- Physics: Queries ---
  5953→    lua_register(L, "physics_get_body_type", l_physics_get_body_type);
  5954→    lua_register(L, "physics_get_mass", l_physics_get_mass);
  5955→    lua_register(L, "physics_is_awake", l_physics_is_awake);
  5956→    lua_register(L, "physics_set_awake", l_physics_set_awake);

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:
  5952→    // --- Physics: Queries ---
  5953→    lua_register(L, "physics_get_body_type", l_physics_get_body_type);
  5954→    lua_register(L, "physics_get_mass", l_physics_get_mass);
  5955→    lua_register(L, "physics_is_awake", l_physics_is_awake);
  5956→    lua_register(L, "physics_set_awake", l_physics_set_awake);
  5957→    lua_register(L, "physics_debug_events", l_physics_debug_events);
  5958→    // --- Physics: Events ---
  5959→    lua_register(L, "physics_get_collision_begin", l_physics_get_collision_begin);
  5960→    lua_register(L, "physics_get_collision_end", l_physics_get_collision_end);
  5961→    lua_register(L, "physics_get_hit", l_physics_get_hit);
  5962→    lua_register(L, "physics_get_sensor_begin", l_physics_get_sensor_begin);

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:
  5959→    lua_register(L, "physics_get_collision_begin", l_physics_get_collision_begin);
  5960→    lua_register(L, "physics_get_collision_end", l_physics_get_collision_end);
  5961→    lua_register(L, "physics_get_hit", l_physics_get_hit);
  5962→    lua_register(L, "physics_get_sensor_begin", l_physics_get_sensor_begin);
  5963→    lua_register(L, "physics_get_sensor_end", l_physics_get_sensor_end);
  5964→    // --- Physics: Spatial Queries & Raycast ---
  5965→    lua_register(L, "physics_query_point", l_physics_query_point);
  5966→    lua_register(L, "physics_query_circle", l_physics_query_circle);
  5967→    lua_register(L, "physics_query_aabb", l_physics_query_aabb);
  5968→    lua_register(L, "physics_query_box", l_physics_query_box);

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:
  5968→    lua_register(L, "physics_query_box", l_physics_query_box);
  5969→    lua_register(L, "physics_query_capsule", l_physics_query_capsule);
  5970→    lua_register(L, "physics_query_polygon", l_physics_query_polygon);
  5971→    lua_register(L, "physics_raycast", l_physics_raycast);
  5972→    lua_register(L, "physics_raycast_all", l_physics_raycast_all);
  5973→    // --- Random ---
  5974→    lua_register(L, "random_create", l_random_create);
  5975→    lua_register(L, "random_seed", l_random_seed);
  5976→    lua_register(L, "random_get_seed", l_random_get_seed);
  5977→    lua_register(L, "random_float_01", l_random_float_01);

No matches found

15: * [Lines 5900-6100]  Lua registration (register_lua_bindings)
5850:static void register_lua_bindings(lua_State* L) {
6907:    register_lua_bindings(L);

5850→static void register_lua_bindings(lua_State* L) {
  5851→    // Create RNG metatable (for random_create instances)
  5852→    luaL_newmetatable(L, RNG_METATABLE);
  5853→    lua_pop(L, 1);
  5854→
  5855→    // --- Layer & Texture ---
  5856→    lua_register(L, "layer_create", l_layer_create);
  5857→    lua_register(L, "layer_rectangle", l_layer_rectangle);
  5858→    lua_register(L, "layer_circle", l_layer_circle);
  5859→    lua_register(L, "layer_push", l_layer_push);
  5860→    lua_register(L, "layer_pop", l_layer_pop);
  5861→    lua_register(L, "layer_draw_texture", l_layer_draw_texture);
  5862→    lua_register(L, "layer_set_blend_mode", l_layer_set_blend_mode);
  5863→    lua_register(L, "texture_load", l_texture_load);
  5864→    lua_register(L, "texture_unload", l_texture_unload);
  5865→    lua_register(L, "texture_get_width", l_texture_get_width);
  5866→    lua_register(L, "texture_get_height", l_texture_get_height);
  5867→    // --- Font ---
  5868→    lua_register(L, "font_load", l_font_load);
  5869→    lua_register(L, "font_unload", l_font_unload);
  5870→    lua_register(L, "font_get_height", l_font_get_height);
  5871→    lua_register(L, "font_get_text_width", l_font_get_text_width);
  5872→    lua_register(L, "font_get_char_width", l_font_get_char_width);
  5873→    lua_register(L, "font_get_glyph_metrics", l_font_get_glyph_metrics);
  5874→    lua_register(L, "layer_draw_text", l_layer_draw_text);
  5875→    lua_register(L, "layer_draw_glyph", l_layer_draw_glyph);
  5876→    // --- Audio ---
  5877→    lua_register(L, "sound_load", l_sound_load);
  5878→    lua_register(L, "sound_play", l_sound_play);
  5879→    lua_register(L, "sound_set_volume", l_sound_set_volume);
... [170 more lines]

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:
  6018→    lua_register(L, "is_pressed", l_input_is_pressed);
  6019→    lua_register(L, "is_released", l_input_is_released);
  6020→    lua_register(L, "input_any_pressed", l_input_any_pressed);
  6021→    lua_register(L, "input_get_pressed_action", l_input_get_pressed_action);
  6022→    // --- Input: Gamepad ---
  6023→    lua_register(L, "gamepad_is_connected", l_gamepad_is_connected);
  6024→    lua_register(L, "gamepad_get_axis", l_gamepad_get_axis);
  6025→}
  6026→
  6027→// Main loop state (needed for emscripten)

anchor.c
src/anchor.c(646): 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(842): 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(1631): 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(1625): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
src/anchor.c(2017): 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(2295): 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(2301): 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(2411): 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(2420): 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(2514): 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(2516): 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(3207): 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.
src/anchor.c(3697): 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.
gl.c
Generating Code...
LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
Build successful: build/anchor.exe

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

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_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
    24→
    25→### Development
    26→
    27→```bash
    28→cd E:/a327ex/Anchor/engine && ./build.bat    # Build engine (always after C changes)
    29→./scripts/patch-claude-code.sh               # Fix Windows timestamp bug (after CC updates)
    30→```
... [92 more lines]

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:
   101→1. Get moment-to-moment gameplay working first (physics, core mechanics)
   102→2. Then surrounding systems (metagame, UI, progression)
   103→3. Polish and juice come throughout, not as a final phase
   104→
   105→### Long Responses with Code
   106→
   107→When providing answers that are long or contain multiple code examples, create a markdown file in `reference/` and open it in NeoVim with MarkdownPreview (see [Commands](#commands)). Use descriptive filenames like `anchor-loop-analysis.md`, `timer-system-notes.md`.
   108→

E:\a327ex\Anchor\docs\SHAPES_PLAN.md
E:\a327ex\Anchor\docs\ANCHOR.md
E:\a327ex\Anchor\docs\SESSION_WORKFLOW.md
E:\a327ex\Anchor\docs\ANCHOR_CONTEXT_BRIEF.md
E:\a327ex\Anchor\docs\ANCHOR_API_PATTERNS.md
E:\a327ex\Anchor\docs\ANCHOR_IMPLEMENTATION_PLAN.md

=== docs/ ===
ANCHOR_CONTEXT_BRIEF.md
SESSION_WORKFLOW.md

=== archives/ ===
ANCHOR.md
ANCHOR_API_PATTERNS.md
ANCHOR_IMPLEMENTATION_PLAN.md
SHAPES_PLAN.md

5850→static void register_lua_bindings(lua_State* L) {
  5851→    // Create RNG metatable (for random_create instances)
  5852→    luaL_newmetatable(L, RNG_METATABLE);
  5853→    lua_pop(L, 1);
  5854→
  5855→    // --- Layer & Texture ---
  5856→    lua_register(L, "layer_create", l_layer_create);
  5857→    lua_register(L, "layer_rectangle", l_layer_rectangle);
  5858→    lua_register(L, "layer_circle", l_layer_circle);
  5859→    lua_register(L, "layer_push", l_layer_push);
  5860→    lua_register(L, "layer_pop", l_layer_pop);
  5861→    lua_register(L, "layer_draw_texture", l_layer_draw_texture);
  5862→    lua_register(L, "layer_set_blend_mode", l_layer_set_blend_mode);
  5863→    lua_register(L, "texture_load", l_texture_load);
  5864→    lua_register(L, "texture_unload", l_texture_unload);
  5865→    lua_register(L, "texture_get_width", l_texture_get_width);
  5866→    lua_register(L, "texture_get_height", l_texture_get_height);
  5867→    // --- Font ---
  5868→    lua_register(L, "font_load", l_font_load);
  5869→    lua_register(L, "font_unload", l_font_unload);
  5870→    lua_register(L, "font_get_height", l_font_get_height);
  5871→    lua_register(L, "font_get_text_width", l_font_get_text_width);
  5872→    lua_register(L, "font_get_char_width", l_font_get_char_width);
  5873→    lua_register(L, "font_get_glyph_metrics", l_font_get_glyph_metrics);
  5874→    lua_register(L, "layer_draw_text", l_layer_draw_text);
  5875→    lua_register(L, "layer_draw_glyph", l_layer_draw_glyph);
  5876→    // --- Audio ---
  5877→    lua_register(L, "sound_load", l_sound_load);
  5878→    lua_register(L, "sound_play", l_sound_play);
  5879→    lua_register(L, "sound_set_volume", l_sound_set_volume);
... [150 more lines]

4040→        lua_getfield(L, 5, "offset_y");
  4041→        if (!lua_isnil(L, -1)) offset_y = (float)lua_tonumber(L, -1);
  4042→        lua_pop(L, 1);
  4043→    }
  4044→
  4045→    // Create shape def
  4046→    b2ShapeDef shape_def = b2DefaultShapeDef();
  4047→    setup_shape_def_from_tag(&shape_def, tag, is_sensor);
  4048→
  4049→    // Create capsule geometry (vertical, convert to meters)
  4050→    float half_len = (length / 2.0f) / pixels_per_meter;
  4051→    float rad = radius / pixels_per_meter;
  4052→    float ox = offset_x / pixels_per_meter;
  4053→    float oy = offset_y / pixels_per_meter;
  4054→
  4055→    b2Capsule capsule = {
  4056→        .center1 = { ox, oy - half_len },
  4057→        .center2 = { ox, oy + half_len },
  4058→        .radius = rad
  4059→    };
  4060→
  4061→    // Create shape
  4062→    b2ShapeId shape_id = b2CreateCapsuleShape(*body_id, &shape_def, &capsule);
  4063→
  4064→    // Store tag index in shape's user data for event lookup
  4065→    int tag_index = (int)(tag - physics_tags);
  4066→    b2Shape_SetUserData(shape_id, (void*)(uintptr_t)tag_index);
  4067→
  4068→    // Return shape ID as userdata
  4069→    b2ShapeId* ud = (b2ShapeId*)lua_newuserdata(L, sizeof(b2ShapeId));
... [370 more lines]

4840→    ctx.tag_mask = mask;
  4841→
  4842→    b2Vec2 center = {x, y};
  4843→    b2ShapeProxy proxy = b2MakeProxy(&center, 1, radius);
  4844→
  4845→    b2QueryFilter filter = b2DefaultQueryFilter();
  4846→    filter.categoryBits = UINT64_MAX;
  4847→    filter.maskBits = mask;
  4848→
  4849→    b2World_OverlapShape(physics_world, &proxy, filter, query_overlap_callback, &ctx);
  4850→
  4851→    lua_newtable(L);
  4852→    for (int i = 0; i < ctx.count; i++) {
  4853→        b2BodyId* ud = (b2BodyId*)lua_newuserdata(L, sizeof(b2BodyId));
  4854→        *ud = ctx.bodies[i];
  4855→        lua_rawseti(L, -2, i + 1);
  4856→    }
  4857→    return 1;
  4858→}
  4859→
  4860→// physics_query_aabb(x, y, w, h, tags) -> array of bodies
  4861→static int l_physics_query_aabb(lua_State* L) {
  4862→    float x = (float)luaL_checknumber(L, 1) / pixels_per_meter;
  4863→    float y = (float)luaL_checknumber(L, 2) / pixels_per_meter;
  4864→    float w = (float)luaL_checknumber(L, 3) / pixels_per_meter;
  4865→    float h = (float)luaL_checknumber(L, 4) / pixels_per_meter;
  4866→    luaL_checktype(L, 5, LUA_TTABLE);
  4867→
  4868→    uint64_t mask = build_query_mask_from_table(L, 5);
  4869→    if (mask == 0) {
... [370 more lines]

5640→}
  5641→
  5642→static int l_input_is_down(lua_State* L) {
  5643→    const char* name = luaL_checkstring(L, 1);
  5644→    lua_pushboolean(L, input_is_down(name));  // Checks both actions and chords
  5645→    return 1;
  5646→}
  5647→
  5648→static int l_input_is_pressed(lua_State* L) {
  5649→    const char* name = luaL_checkstring(L, 1);
  5650→    lua_pushboolean(L, input_is_pressed(name));  // Checks both actions and chords
  5651→    return 1;
  5652→}
  5653→
  5654→static int l_input_is_released(lua_State* L) {
  5655→    const char* name = luaL_checkstring(L, 1);
  5656→    lua_pushboolean(L, input_is_released(name));  // Checks both actions and chords
  5657→    return 1;
  5658→}
  5659→
  5660→static int l_input_any_pressed(lua_State* L) {
  5661→    lua_pushboolean(L, input_any_pressed());
  5662→    return 1;
  5663→}
  5664→
  5665→static int l_input_get_pressed_action(lua_State* L) {
  5666→    const char* action = input_get_pressed_action();
  5667→    if (action) {
  5668→        lua_pushstring(L, action);
  5669→    } else {
... [190 more lines]

3225:static int l_layer_create(lua_State* L) {
3226-    const char* name = luaL_checkstring(L, 1);
3227-    Layer* layer = layer_get_or_create(name);
3228-    if (!layer) {
3229-        return luaL_error(L, "Failed to create layer: %s", name);
3230-    }
3231-    lua_pushlightuserdata(L, layer);
3232-    return 1;
3233-}
3234-
3235-static int l_layer_rectangle(lua_State* L) {
3236-    Layer* layer = (Layer*)lua_touserdata(L, 1);
3237-    float x = (float)luaL_checknumber(L, 2);
3238-    float y = (float)luaL_checknumber(L, 3);
3239-    float w = (float)luaL_checknumber(L, 4);
3240-    float h = (float)luaL_checknumber(L, 5);

File created successfully at: E:\a327ex\Anchor\docs\ENGINE_API_QUICK.md

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

File created successfully at: E:\a327ex\Anchor\docs\ENGINE_API.md

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

  238 E:/a327ex/Anchor/docs/ENGINE_API_QUICK.md
 1728 E:/a327ex/Anchor/docs/ENGINE_API.md
 1966 total

=== reference/ ===
total 304
drwxr-xr-x 1 adn 197121     0 Jan 10 09:11 ./
drwxr-xr-x 1 adn 197121     0 Jan 10 10:21 ../
-rw-r--r-- 1 adn 197121  9566 Jan  5 16:03 anchor-loop-analysis.md
-rw-r--r-- 1 adn 197121 12618 Jan  8 04:49 anchor-project-review.md
-rw-r--r-- 1 adn 197121  6322 Jan 10 08:45 anchor-review-2-analysis.md
-rw-r--r-- 1 adn 197121 10854 Jan 10 09:11 anchor-structure-analysis.md
-rw-r--r-- 1 adn 197121 11769 Jan  9 06:45 box2d-3-api-proposal.md
-rw-r--r-- 1 adn 197121 17484 Jan  4 09:23 dungeon.yue
-rw-r--r-- 1 adn 197121  5542 Jan  4 09:23 examples.yue
-rw-r--r-- 1 adn 197121  3878 Jan  5 16:34 fixed-timestep-details.md
-rw-r--r-- 1 adn 197121 10788 Jan  7 20:39 frame-timing-analysis.md
-rw-r--r-- 1 adn 197121 15926 Jan  8 15:58 input-system-research.md
drwxr-xr-x 1 adn 197121     0 Jan  7 07:21 love-compare/
-rw-r--r-- 1 adn 197121 13690 Jan  8 08:41 phase-4-effects-analysis.md
-rw-r--r-- 1 adn 197121 14750 Jan  9 17:45 phase-8-random-research.md
-rw-r--r-- 1 adn 197121 49450 Jan  9 22:29 phase-9-text-analysis.md
-rw-r--r-- 1 adn 197121  4381 Jan  8 05:38 phase-review-findings.md
-rw-r--r-- 1 adn 197121  8276 Jan  7 08:21 pixel-perfect-research.md
-rw-r--r-- 1 adn 197121 10380 Jan  5 17:18 shader-setup-explained.md
-rw-r--r-- 1 adn 197121 16656 Jan  4 09:23 snkrx.yue
-rw-r--r-- 1 adn 197121 10542 Jan  5 22:44 strudel-chiptune-guide.md
drwxr-xr-x 1 adn 197121     0 Jan  8 07:22 super emoji box/
-rw-r--r-- 1 adn 197121 20795 Jan  4 09:23 swarm_survival.yue

=== archives/ ===
total 188
drwxr-xr-x 1 adn 197121     0 Jan 10 10:21 ./
drwxr-xr-x 1 adn 197121     0 Jan 10 10:21 ../
... [4 more lines]

E:/a327ex/Anchor/reference
E:/a327ex/Anchor/reference/analysis
E:/a327ex/Anchor/reference/analysis/anchor-loop-analysis.md
E:/a327ex/Anchor/reference/analysis/anchor-project-review.md
E:/a327ex/Anchor/reference/analysis/anchor-review-2-analysis.md
E:/a327ex/Anchor/reference/analysis/anchor-structure-analysis.md
E:/a327ex/Anchor/reference/analysis/box2d-3-api-proposal.md
E:/a327ex/Anchor/reference/analysis/fixed-timestep-details.md
E:/a327ex/Anchor/reference/analysis/frame-timing-analysis.md
E:/a327ex/Anchor/reference/analysis/input-system-research.md
E:/a327ex/Anchor/reference/analysis/phase-4-effects-analysis.md
E:/a327ex/Anchor/reference/analysis/phase-8-random-research.md
E:/a327ex/Anchor/reference/analysis/phase-9-text-analysis.md
E:/a327ex/Anchor/reference/analysis/phase-review-findings.md
E:/a327ex/Anchor/reference/analysis/pixel-perfect-research.md
E:/a327ex/Anchor/reference/analysis/shader-setup-explained.md
E:/a327ex/Anchor/reference/analysis/strudel-chiptune-guide.md
E:/a327ex/Anchor/reference/archives
E:/a327ex/Anchor/reference/archives/ANCHOR.md
E:/a327ex/Anchor/reference/archives/ANCHOR_API_PATTERNS.md
E:/a327ex/Anchor/reference/archives/ANCHOR_IMPLEMENTATION_PLAN.md
E:/a327ex/Anchor/reference/archives/SHAPES_PLAN.md
E:/a327ex/Anchor/reference/examples
E:/a327ex/Anchor/reference/examples/dungeon.yue
E:/a327ex/Anchor/reference/examples/examples.yue
E:/a327ex/Anchor/reference/examples/snkrx.yue
E:/a327ex/Anchor/reference/examples/swarm_survival.yue
E:/a327ex/Anchor/reference/love-compare
E:/a327ex/Anchor/reference/love-compare/anchor
E:/a327ex/Anchor/reference/love-compare/anchor/animation.lua
... [20 more lines]

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_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
    24→
    25→### Development
    26→
    27→```bash
    28→cd E:/a327ex/Anchor/engine && ./build.bat    # Build engine (always after C changes)
    29→./scripts/patch-claude-code.sh               # Fix Windows timestamp bug (after CC updates)
    30→```
... [78 more lines]

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). To tell you how to proceed, the user said:
also add what "engine" vs "game" means right at the top so the terminology is clear and Claude instances have clear knowledge of when they should be each.

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). To tell you how to proceed, the user said:
be more terse in your explanation, remove pointless lines "handles rendering, physics, etc" that's implicit, also remove "uses an. namespace and higher level abstractions" that's also implicit once. Make Engine Mode and Game Mode the same style as the previous two, separated by -- with simple description that follows, it should just be 4 lines, Engine, Game, Engine mode, Game mode

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:
     1→# CLAUDE.md
     2→
     3→Guidelines for Claude Code instances working on Anchor and games built with it.
     4→
     5→---
     6→
     7→## Engine vs Game
     8→
     9→**Engine** — C code in `engine/src/anchor.c` exposing functions to Lua
    10→**Game** — YueScript code using the engine to build games
    11→**Engine Mode** — when modifying anchor.c or engine behavior
    12→**Game Mode** — when writing gameplay code in YueScript
    13→
    14→---
    15→
    16→## Read First
    17→
    18→**Source of truth:** `engine/src/anchor.c` — the complete engine implementation (~7000 lines, single file).
    19→
    20→**Engine API:**
    21→- `docs/ENGINE_API_QUICK.md` — compact function signatures, one per line (for quick lookup)
    22→- `docs/ENGINE_API.md` — detailed documentation with examples for every function
    23→
    24→**Context:**
    25→- `docs/ANCHOR_CONTEXT_BRIEF.md` — design reasoning, developer working style, how to evaluate features
    26→
    27→**Archived docs** (superseded by anchor.c, kept for historical reference):
    28→- `reference/archives/ANCHOR_IMPLEMENTATION_PLAN.md` — original phased implementation plan
    29→- `reference/archives/ANCHOR.md` — original engine specification
... [5 more lines]

<tool_use_error>File does not exist.</tool_use_error>

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]

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]

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1→# Phase 10: YueScript Object System - Detailed Implementation Plan
     2→
     3→## Overview
     4→
     5→Phase 10 transforms Anchor from a C engine with Lua bindings into a full game framework. The core deliverable is the object tree system with operators, plus three engine objects (Timer, Spring, Collider) that wrap C resources.
     6→
     7→---
     8→
     9→## 10.1 YueScript Build Integration
    10→
    11→**Goal:** `.yue` files compile to `.lua` with accurate line number reporting for debugging.
    12→
    13→**Steps:**
    14→1. Install YueScript compiler (via LuaRocks or standalone)
    15→2. Create `compile-yue.bat` script that runs `yue -r` on game folder
    16→3. Modify `build.bat` to call `compile-yue.bat` before embedding Lua
    17→4. Modify `build-web.sh` similarly
    18→5. Test that syntax errors report correct `.yue` line numbers
    19→
    20→**File structure:**
    21→```
    22→game/
    23→├── main.yue          → compiled to main.lua
    24→├── player.yue        → compiled to player.lua
    25→└── yue/              → framework classes
    26→    ├── object.yue
    27→    ├── timer.yue
    28→    ├── spring.yue
    29→    └── collider.yue
    30→```
... [528 more lines]

The file E:\a327ex\Anchor\reference\phase-10-implementation-plan.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→# Phase 10: YueScript Object System - Detailed Implementation Plan
     2→
     3→## Overview
     4→
     5→Phase 10 transforms Anchor from a C engine with Lua bindings into a full game framework. The core deliverable is the object tree system with operators, plus built-in objects (Timer, Spring, Collider, etc.) that wrap C resources.
     6→
     7→---
     8→
     9→## 10.1 YueScript Build Integration
    10→
    11→**Goal:** `.yue` files compile to `.lua` with accurate line number reporting for debugging.
    12→
    13→**Steps:**
    14→1. Install YueScript compiler (via LuaRocks or standalone)
    15→2. Create `compile-yue.bat` script that runs `yue -r` on game folder
    16→3. Modify `build.bat` to call `compile-yue.bat` before embedding Lua
    17→4. Modify `build-web.sh` similarly
    18→5. Test that syntax errors report correct `.yue` line numbers
    19→
    20→**File structure (tentative):**
    21→```
    22→game/
    23→├── main.yue          → compiled to main.lua
    24→├── player.yue        → compiled to player.lua
    25→└── yue/              → framework classes
    26→    ├── object.yue
    27→    ├── timer.yue
    28→    ├── spring.yue
    29→    └── collider.yue
... [370 more lines]

[
  {
    "type": "text",
    "text": "Perfect! Now I have all the information I need. Let me compile my research findings into a comprehensive report.\n\n## Summary of Findings\n\nBased on my investigation of the Anchor engine codebase, build system, and documentation, here's what I discovered about the current architecture and constraints:\n\n### 1. Current Lua Loading Mechanism\n\n**In `engine/src/anchor.c`:**\n- Line 6900: `L = luaL_newstate()` \u2014 Lua state created\n- Line 6906: `luaL_openlibs(L)` \u2014 Standard libraries loaded\n- Line 6907: `register_lua_bindings(L)` \u2014 C functions registered as globals (layer_create, physics_init, etc.)\n- Line 6933: `luaL_loadfile(L, \"main.lua\")` \u2014 Main entry point loaded from disk\n\n**Current behavior:**\n- The engine looks for `main.lua` in the **current working directory** (not a configurable path)\n- `require()` uses default Lua paths (relative to working directory)\n- There's **no custom package.path configuration** \u2014 games rely on standard Lua require behavior\n- The web build uses Emscripten's `--preload-file \"$GAME_FOLDER\"@/` (line 56 in build-web.sh) which mounts the game folder at the root of the virtual filesystem\n\n### 2. Build Script Behavior\n\n**Windows (`build.bat`):**\n- Compiles C to `build/anchor.exe`\n- Takes no game folder argument\n- Expects `main.lua` in the working directory when run\n- No asset bundling currently implemented\n\n**Web (`build-web.sh`):**\n- Takes a game folder as argument: `./build-web.sh ../test`\n- Uses `--preload-file` to embed the game folder at build time\n- Bundles everything into `build-web/anchor.html`\n- Clean separation between engine build and game bundling\n\n### 3. Zip-Append Bundling\n\n**From `ANCHOR_IMPLEMENTATION_PLAN.md` (line 20) and `ANCHOR.md` (line 1433):**\n- **Strategy:** Game content packed into ZIP, appended to executable\n- **Development mode:** Files load from disk during development\n- **Release mode:** Zip archive appended to exe; standard tools (7-Zip, WinRAR) can extract\n- **Status:** Documented but **not yet implemented**\n\n### 4. YueScript Compiler Capabilities\n\n**From YueScript documentation and phase-10 plan:**\n- `-r` flag: Rewrites output to match source line numbers (preserves debugging info)\n- `-t <dir>` flag: Specifies output directory for compiled files\n- `-w` flag: Watches and auto-compiles files in a folder\n- Can compile directories of `.yue` files to `.lua`\n- Compiler available via LuaRocks or standalone binary\n\n**Current plan (phase-10-implementation-plan.md, line 20-30):**\n```\ngame/\n\u251c\u2500\u2500 main.yue          \u2192 compiled to main.lua\n\u251c\u2500\u2500 player.yue        \u2192 compiled to player.lua\n\u2514\u2500\u2500 yue/              \u2192 framework classes\n    \u251c\u2500\u2500 object.yue\n    \u251c\u2500\u2500 timer.yue\n    \u251c\u2500\u2500 spring.yue\n    \u2514\u2500\u2500 collider.yue\n```\n\n### 5. Existing Game Structure\n\n**Test game (`test/`):**\n- `main.lua` at root\n- `assets/` subdirectory\n- `shaders/` subdirectory\n- `input_tests.lua` (separate test file)\n- **No framework files yet** \u2014 just game code\n\n**Emoji-Ball-Battles game (`games/emoji-ball-battles/`):**\n- Currently only a design document\n- Ready for implementation\n\n---\n\n## Proposed Framework Organization Options\n\nGiven the constraints, here are **three concrete options**, each with tradeoffs:\n\n### Option A: Framework in `engine/yue/` (Embedded During Build)\n\n**Structure:**\n```\nAnchor/\n\u251c\u2500\u2500 engine/\n\u2502   \u251c\u2500\u2500 yue/                   # Framework classes (shared by all games)\n\u2502   \u2502   \u251c\u2500\u2500 object.yue\n\u2502   \u2502   \u251c\u2500\u2500 timer.yue\n\u2502   \u2502   \u251c\u2500\u2500 spring.yue\n\u2502   \u2502   \u251c\u2500\u2500 collider.yue\n\u2502   \u2502   \u2514\u2500\u2500 ... (other built-ins)\n\u2502   \u251c\u2500\u2500 build.bat              # Modified to compile engine/yue/ + game folder\n\u2502   \u2514\u2500\u2500 src/anchor.c\n\u251c\u2500\u2500 games/emoji-ball-battles/\n\u2502   \u251c\u2500\u2500 main.yue\n\u2502   \u251c\u2500\u2500 player.yue\n\u2502   \u251c\u2500\u2500 scenes/\n\u2502   \u2514\u2500\u2500 assets/\n\u2514\u2500\u2500 test/\n    \u251c\u2500\u2500 main.lua\n    \u2514\u2500\u2500 assets/\n```\n\n**Build process:**\n1. Compile `engine/yue/*.yue` \u2192 `engine/build/yue/*.lua` (once, reused)\n2. Compile game folder `games/game-name/*.yue` \u2192 `games/game-name/*.lua`\n3. Embed both into executable (or zip if using zip-append)\n\n**Game code requires framework:**\n```yuescript\n-- In games/emoji-ball-battles/main.yue\nyue = require 'yue.object'    -- or just require directly if in package.path\nobject = yue.object\ntimer = yue.timer\n...\n```\n\n**Advantages:**\n- Framework is versioned with engine\n- All games get same framework automatically\n- Single exe contains everything\n- Easy to update framework (rebuild engine)\n\n**Disadvantages:**\n- Games can't override framework classes easily\n- Every engine rebuild recompiles framework\n- Games need to know about `yue.*` namespace or set up requires explicitly\n\n---\n\n### Option B: Framework in Each Game Folder (with Symlink in Development)\n\n**Structure:**\n```\nAnchor/\n\u251c\u2500\u2500 engine/\n\u2502   \u251c\u2500\u2500 framework-template/    # Template copied to each game\n\u2502   \u2502   \u251c\u2500\u2500 object.yue\n\u2502   \u2502   \u251c\u2500\u2500 timer.yue\n\u2502   \u2502   \u2514\u2500\u2500 ...\n\u2502   \u2514\u2500\u2500 build.bat              # Compiles only the game folder\n\u251c\u2500\u2500 games/emoji-ball-battles/\n\u2502   \u251c\u2500\u2500 framework/             # Copied/symlinked from engine/framework-template/\n\u2502   \u2502   \u251c\u2500\u2500 object.yue\n\u2502   \u2502   \u251c\u2500\u2500 timer.yue\n\u2502   \u2502   \u2514\u2500\u2500 ...\n\u2502   \u251c\u2500\u2500 main.yue               # Requires 'framework.object'\n\u2502   \u251c\u2500\u2500 player.yue\n\u2502   \u2514\u2500\u2500 assets/\n\u2514\u2500\u2500 test/\n    \u251c\u2500\u2500 framework/             # Symlink or copy\n    \u251c\u2500\u2500 main.lua\n    \u2514\u2500\u2500 assets/\n```\n\n**Build process:**\n1. Copy/symlink `engine/framework-template/` into game folder (if not present)\n2. Compile game folder (including framework) \u2192 all `.lua`\n3. Embed into executable\n\n**Game code requires framework:**\n```yuescript\n-- In games/emoji-ball-battles/main.yue\nobject = require 'framework.object'\ntimer = require 'framework.timer'\n...\n```\n\n**Advantages:**\n- Games can override framework (local copy takes precedence)\n- Framework versioning is explicit per-game\n- No magic; everything is visible in the game folder\n- Symlinks make development seamless without duplication\n\n**Disadvantages:**\n- Duplication across games (but symlinks mitigate)\n- Need to manage framework updates across games\n- More setup per new game\n\n---\n\n### Option C: Framework in Game Folder Root + Package Path Setup (Hybrid)\n\n**Structure:**\n```\nAnchor/\n\u251c\u2500\u2500 engine/\n\u2502   \u251c\u2500\u2500 yue/                   # Framework source\n\u2502   \u2502   \u251c\u2500\u2500 object.yue\n\u2502   \u2502   \u251c\u2500\u2500 timer.yue\n\u2502   \u2502   \u2514\u2500\u2500 ...\n\u2502   \u251c\u2500\u2500 lib/                   # Compiled framework (generated)\n\u2502   \u2502   \u251c\u2500\u2500 object.lua\n\u2502   \u2502   \u251c\u2500\u2500 timer.lua\n\u2502   \u2502   \u2514\u2500\u2500 ...\n\u2502   \u2514\u2500\u2500 build.bat\n\u251c\u2500\u2500 games/emoji-ball-battles/\n\u2502   \u251c\u2500\u2500 main.yue               # Requires 'object', 'timer', etc.\n\u2502   \u251c\u2500\u2500 player.yue\n\u2502   \u2514\u2500\u2500 assets/\n\u2514\u2500\u2500 test/\n    \u251c\u2500\u2500 main.lua\n    \u2514\u2500\u2500 assets/\n```\n\n**Build process:**\n1. Compile `engine/yue/*.yue` \u2192 `engine/lib/*.lua` (generated once)\n2. Set Lua package.path to include `engine/lib/`\n3. Compile game folder\n4. Embed all into executable with proper virtual FS\n\n**C code modification (anchor.c, after luaL_openlibs):**\n```c\n// Set up package.path to include framework directory\nlua_getglobal(L, \"package\");\nlua_getfield(L, -1, \"path\");\nconst char *old_path = lua_tostring(L, -1);\nconst char *framework_path = \"./yue/?.lua;./?.lua;\";  // Adjust for embedded vs disk\nlua_pushfstring(L, \"%s%s\", framework_path, old_path);\nlua_setfield(L, -3, \"path\");\nlua_pop(L, 2);\n```\n\n**Game code requires framework:**\n```yuescript\n-- Simple, clean requires\nobject = require 'object'\ntimer = require 'timer'\nspring = require 'spring'\n```\n\n**Advantages:**\n- Cleanest game code (no `yue.` prefix)\n- Framework auto-loaded if in path\n- Single source of truth\n- Easy to update framework globally\n- Games can still override by shadowing in their folder\n\n**Disadvantages:**\n- Requires modifying C code to set package.path\n- Virtual filesystem path handling needed for bundled exe\n- More coupling between engine and game runtime setup\n\n---\n\n## Recommendation\n\n**Option C (Hybrid)** is strongest because:\n\n1. **Developer experience is optimal** \u2014 Game code just does `require 'object'` without ceremony\n2. **Aligns with Anchor's \"no bureaucracy\" philosophy** \u2014 Things work without setup\n3. **Bundles cleanly** \u2014 Engine builds framework once, game requires from known location\n4. **Extensible** \u2014 Games can still override by creating local `object.lua`\n5. **C modification is minimal** \u2014 Just package.path setup, no complex embedding logic\n\nFor **zip-append bundling**:\n- Compile engine/yue/ \u2192 engine/lib/ (committed to repo)\n- Compile game/ in-place\n- Zip: `engine/lib/*.lua`, `game/**/*.lua`, `game/assets/`, etc.\n- Append zip to exe\n- In C: Check for appended zip, mount at virtual root, set package.path accordingly\n\n**Implementation sequence:**\n1. Create `engine/yue/object.yue` with base class\n2. Add `compile-yue.bat` script (compiles `engine/yue/` to `engine/lib/`)\n3. Modify `build.bat` to call compile-yue before main build\n4. Modify `anchor.c` to set package.path (for both disk and bundled modes)\n5. Test with game folder using `require 'object'`\n6. When zip-append is implemented, adjust package.path to use virtual root\n\n---\n\nSources:\n- [YueScript Documentation](https://yuescript.org/doc/)"
  },
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    "text": "agentId: a348434 (for resuming to continue this agent's work if needed)"
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blot https://blot.im/clients/git/end/anchor.git (fetch)
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-rwxr-xr-x 1 adn 197121 1798 Jan 10 16:36 build-web.sh*
drwxr-xr-x 1 adn 197121    0 Jan 10 16:36 include/
drwxr-xr-x 1 adn 197121    0 Jan 10 16:36 lib/
-rw-r--r-- 1 adn 197121  104 Jan 10 16:36 run-web.bat
-rw-r--r-- 1 adn 197121 3584 Jan 10 16:36 shell.html
drwxr-xr-x 1 adn 197121    0 Jan 10 16:36 src/

Exit code 1
You do not have sufficient privilege to perform this operation.

total 45
drwxr-xr-x 1 adn 197121     0 Jan 10 16:39 ./
drwxr-xr-x 1 adn 197121     0 Jan 10 16:36 ../
drwxr-xr-x 1 adn 197121     0 Jan 10 16:36 .git/
-rw-r--r-- 1 adn 197121    76 Jan 10 16:36 .gitmodules
drwxr-xr-x 1 adn 197121     0 Jan 10 16:36 anchor/
-rw-r--r-- 1 adn 197121 33228 Jan  4 09:23 EMOJI_BALL_BATTLES_DESIGN.md
drwxr-xr-x 1 adn 197121     0 Jan 10 16:39 yue/

yue: directory

total 0
drwxr-xr-x 1 adn 197121 0 Jan 10 16:39 ./
drwxr-xr-x 1 adn 197121 0 Jan 10 16:39 ../
---
total 4
drwxr-xr-x 1 adn 197121 0 Jan 10 16:38 ./
drwxr-xr-x 1 adn 197121 0 Jan 10 16:38 ../

total 45
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drwxr-xr-x 1 adn 197121     0 Jan 10 16:36 .git/
-rw-r--r-- 1 adn 197121    76 Jan 10 16:36 .gitmodules
drwxr-xr-x 1 adn 197121     0 Jan 10 16:36 anchor/
-rw-r--r-- 1 adn 197121 33228 Jan  4 09:23 EMOJI_BALL_BATTLES_DESIGN.md

Exit code 1

Junction created for yue <<===>> anchor\engine\yue

total 45
drwxr-xr-x 1 adn 197121     0 Jan 10 16:40 ./
drwxr-xr-x 1 adn 197121     0 Jan 10 16:36 ../
drwxr-xr-x 1 adn 197121     0 Jan 10 16:36 .git/
-rw-r--r-- 1 adn 197121    76 Jan 10 16:36 .gitmodules
drwxr-xr-x 1 adn 197121     0 Jan 10 16:36 anchor/
-rw-r--r-- 1 adn 197121 33228 Jan  4 09:23 EMOJI_BALL_BATTLES_DESIGN.md
lrwxrwxrwx 1 adn 197121    46 Jan 10 16:40 yue -> /e/a327ex/emoji-ball-battles/anchor/engine/yue/
---
total 0
drwxr-xr-x 1 adn 197121 0 Jan 10 16:38 ./
drwxr-xr-x 1 adn 197121 0 Jan 10 16:40 ../

test

On branch main
Your branch is up to date with 'origin/main'.

Changes to be committed:
  (use "git restore --staged <file>..." to unstage)
    new file:   .gitmodules
    new file:   anchor

On branch main
Your branch is up to date with 'origin/main'.

Changes to be committed:
  (use "git restore --staged <file>..." to unstage)
    new file:   .gitmodules
    new file:   anchor

File created successfully at: E:\a327ex\emoji-ball-battles\setup.bat

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

docs/
engine/
private/
reference/
scripts/
test/
tools/
website/

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

1→# Phase 10: YueScript Object System - Detailed Implementation Plan
     2→
     3→## Overview
     4→
     5→Phase 10 transforms Anchor from a C engine with Lua bindings into a full game framework. The core deliverable is the object tree system with operators, plus built-in objects (Timer, Spring, Collider, etc.) that wrap C resources.
     6→
     7→---
     8→
     9→## 10.1 YueScript Build Integration
    10→
    11→**Goal:** `.yue` files compile to `.lua` with accurate line number reporting for debugging.
    12→
    13→**Steps:**
    14→1. Install YueScript compiler (via LuaRocks or standalone)
    15→2. Create `compile-yue.bat` script that runs `yue -r` on game folder
    16→3. Modify `build.bat` to call `compile-yue.bat` before embedding Lua
    17→4. Modify `build-web.sh` similarly
    18→5. Test that syntax errors report correct `.yue` line numbers
    19→
    20→**File structure (tentative):**
    21→```
    22→game/
    23→├── main.yue          → compiled to main.lua
    24→├── player.yue        → compiled to player.lua
    25→└── yue/              → framework classes
    26→    ├── object.yue
    27→    ├── timer.yue
    28→    ├── spring.yue
    29→    └── collider.yue
    30→```
... [369 more lines]

The file E:\a327ex\Anchor\reference\phase-10-implementation-plan.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     5→Phase 10 transforms Anchor from a C engine with Lua bindings into a full game framework. The core deliverable is the object tree system with operators, plus built-in objects (Timer, Spring, Collider, etc.) that wrap C resources.
     6→
     7→---
     8→
     9→## 10.1 YueScript Build Integration
    10→
    11→**Goal:** `.yue` files compile to `.lua` with accurate line number reporting for debugging.
    12→
    13→**Steps:**
    14→1. Install YueScript compiler (via LuaRocks or standalone)
    15→2. Create `compile-yue.bat` script that runs `yue -r` on framework and game folders
    16→3. Test that syntax errors report correct `.yue` line numbers
    17→
    18→### Repository Structure
    19→
    20→Each game is its own repository with Anchor as a submodule:
    21→
    22→```
    23→emoji-ball-battles/              # Game repo (self-contained)
    24→├── anchor/                      # Git submodule → Anchor repo
    25→│   ├── engine/
    26→│   │   ├── src/anchor.c
    27→│   │   ├── yue/                 # Framework source files
    28→│   │   │   ├── object.yue
    29→│   │   │   ├── timer.yue
    30→│   │   │   └── ...
    31→│   │   └── build/
    32→│   │       └── anchor.exe
    33→│   └── ...
... [55 more lines]

The file E:\a327ex\Anchor\reference\phase-10-implementation-plan.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   438→11. **Built-in objects** — Timer, Spring, Collider (one at a time, comparing with old Anchor)
   439→
   440→---
   441→
   442→## Open Questions
   443→
   444→1. **Root object:** Old Anchor had `an` as both a global root and a "God object" with singleton-like behavior. TBD whether to do something different this time.
   445→

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

total 224
drwxr-xr-x 1 adn 197121      0 Jan  7 20:34 ./
drwxr-xr-x 1 adn 197121      0 Jan 10 16:41 ../
-rw-r--r-- 1 adn 197121   1304 Jan  7 19:56 build.bat
-rw-r--r-- 1 adn 197121  19965 Jan  7 20:34 monitor_sim.c
-rwxr-xr-x 1 adn 197121 162816 Jan  7 20:34 monitor_sim.exe*
-rw-r--r-- 1 adn 197121  36582 Jan  7 20:34 monitor_sim.obj
---
total 20
drwxr-xr-x 1 adn 197121     0 Jan  5 11:21 ./
drwxr-xr-x 1 adn 197121     0 Jan 10 16:41 ../
-rwxr-xr-x 1 adn 197121 10315 Jan  4 12:13 jsonl-to-markdown.py*
-rwxr-xr-x 1 adn 197121  2252 Jan  5 11:21 patch-claude-code.sh*

1→# Build outputs
     2→*.o
     3→*.obj
     4→*.so
     5→*.dll
     6→
     7→# Editor
     8→*.swp
     9→*.swo
    10→*~
    11→.vscode/
    12→.idea/
    13→
    14→# OS
    15→.DS_Store
    16→Thumbs.db
    17→
    18→# Lua build
    19→lua/*.lua
    20→
    21→# Session data (keep in .claude but not tracked)
    22→.claude/session-timestamps.log
    23→
    24→# Private game repos (nested git repos)
    25→games/
    26→
    27→# Private documents
    28→private/
    29→
    30→# Real-life todos (personal, not tracked)
... [2 more lines]

build.bat
jsonl-to-markdown.py*
monitor_sim.c
patch-claude-code.sh*

The file E:\a327ex\Anchor\.gitignore has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→# Build outputs
     2→*.o
     3→*.obj
     4→*.so
     5→*.dll
     6→*.exe
     7→
     8→# Editor
     9→*.swp
    10→*.swo

The file E:\a327ex\Anchor\.gitignore has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    21→
    22→# Session data (keep in .claude but not tracked)
    23→.claude/session-timestamps.log
    24→
    25→# Private documents
    26→private/
    27→
    28→# Real-life todos (personal, not tracked)
    29→todos/

On branch main
Your branch is up to date with 'origin/main'.

Changes to be committed:
  (use "git restore --staged <file>..." to unstage)
    new file:   .gitmodules
    new file:   anchor

Untracked files:
  (use "git add <file>..." to include in what will be committed)
    setup.bat

On branch main
Your branch is up to date with 'origin/main'.

Changes to be committed:
  (use "git restore --staged <file>..." to unstage)
    modified:   .claude/CLAUDE.md
    modified:   .gitignore
    new file:   docs/ENGINE_API.md
    new file:   docs/ENGINE_API_QUICK.md
    modified:   engine/build/anchor.exe
    modified:   engine/src/anchor.c
    new file:   engine/yue/README.md
    renamed:    reference/anchor-loop-analysis.md -> reference/analysis/anchor-loop-analysis.md
    renamed:    reference/anchor-project-review.md -> reference/analysis/anchor-project-review.md
    new file:   reference/analysis/anchor-review-2-analysis.md
    new file:   reference/analysis/anchor-structure-analysis.md
    renamed:    reference/box2d-3-api-proposal.md -> reference/analysis/box2d-3-api-proposal.md
    renamed:    reference/fixed-timestep-details.md -> reference/analysis/fixed-timestep-details.md
    renamed:    reference/frame-timing-analysis.md -> reference/analysis/frame-timing-analysis.md
    renamed:    reference/input-system-research.md -> reference/analysis/input-system-research.md
    renamed:    reference/phase-4-effects-analysis.md -> reference/analysis/phase-4-effects-analysis.md
    renamed:    reference/phase-8-random-research.md -> reference/analysis/phase-8-random-research.md
    renamed:    reference/phase-9-text-analysis.md -> reference/analysis/phase-9-text-analysis.md
    renamed:    reference/phase-review-findings.md -> reference/analysis/phase-review-findings.md
    renamed:    reference/pixel-perfect-research.md -> reference/analysis/pixel-perfect-research.md
    renamed:    reference/shader-setup-explained.md -> reference/analysis/shader-setup-explained.md
    renamed:    reference/strudel-chiptune-guide.md -> reference/analysis/strudel-chiptune-guide.md
    renamed:    docs/ANCHOR.md -> reference/archives/ANCHOR.md
    renamed:    docs/ANCHOR_API_PATTERNS.md -> reference/archives/ANCHOR_API_PATTERNS.md
    renamed:    docs/ANCHOR_IMPLEMENTATION_PLAN.md -> reference/archives/ANCHOR_IMPLEMENTATION_PLAN.md
... [42 more lines]

[main aab2e37] Anchor Review 2: Reorganize docs, add API reference, prepare for Phase 10
 35 files changed, 3393 insertions(+), 140 deletions(-)
 create mode 100644 docs/ENGINE_API.md
 create mode 100644 docs/ENGINE_API_QUICK.md
 create mode 100644 engine/yue/README.md
 rename reference/{ => analysis}/anchor-loop-analysis.md (100%)
 rename reference/{ => analysis}/anchor-project-review.md (100%)
 create mode 100644 reference/analysis/anchor-review-2-analysis.md
 create mode 100644 reference/analysis/anchor-structure-analysis.md
 rename reference/{ => analysis}/box2d-3-api-proposal.md (100%)
 rename reference/{ => analysis}/fixed-timestep-details.md (100%)
 rename reference/{ => analysis}/frame-timing-analysis.md (100%)
 rename reference/{ => analysis}/input-system-research.md (100%)
 rename reference/{ => analysis}/phase-4-effects-analysis.md (100%)
 rename reference/{ => analysis}/phase-8-random-research.md (100%)
 rename reference/{ => analysis}/phase-9-text-analysis.md (100%)
 rename reference/{ => analysis}/phase-review-findings.md (100%)
 rename reference/{ => analysis}/pixel-perfect-research.md (100%)
 rename reference/{ => analysis}/shader-setup-explained.md (100%)
 rename reference/{ => analysis}/strudel-chiptune-guide.md (100%)
 rename {docs => reference/archives}/ANCHOR.md (100%)
 rename {docs => reference/archives}/ANCHOR_API_PATTERNS.md (100%)
 rename {docs => reference/archives}/ANCHOR_IMPLEMENTATION_PLAN.md (100%)
 rename {docs => reference/archives}/SHAPES_PLAN.md (100%)
 rename reference/{ => examples}/dungeon.yue (100%)
 rename reference/{ => examples}/examples.yue (100%)
 rename reference/{ => examples}/snkrx.yue (100%)
 rename reference/{ => examples}/swarm_survival.yue (100%)
 create mode 100644 reference/file-organization-walkthrough.md
 create mode 100644 reference/phase-10-implementation-plan.md
... [3 more lines]

To github.com:a327ex/Anchor.git
   090c0e7..aab2e37  main -> main

Updating 090c0e7..aab2e37
Fast-forward
 .claude/CLAUDE.md                                  |   41 +-
 .gitignore                                         |    4 +-
 docs/ENGINE_API.md                                 | 1728 ++++++++++++++++++++
 docs/ENGINE_API_QUICK.md                           |  238 +++
 engine/build/anchor.exe                            |  Bin 4076544 -> 4076544 bytes
 engine/src/anchor.c                                |  363 ++--
 engine/yue/README.md                               |   11 +
 reference/{ => analysis}/anchor-loop-analysis.md   |    0
 reference/{ => analysis}/anchor-project-review.md  |    0
 reference/analysis/anchor-review-2-analysis.md     |  170 ++
 reference/analysis/anchor-structure-analysis.md    |  273 ++++
 reference/{ => analysis}/box2d-3-api-proposal.md   |    0
 reference/{ => analysis}/fixed-timestep-details.md |    0
 reference/{ => analysis}/frame-timing-analysis.md  |    0
 reference/{ => analysis}/input-system-research.md  |    0
 .../{ => analysis}/phase-4-effects-analysis.md     |    0
 .../{ => analysis}/phase-8-random-research.md      |    0
 reference/{ => analysis}/phase-9-text-analysis.md  |    0
 reference/{ => analysis}/phase-review-findings.md  |    0
 reference/{ => analysis}/pixel-perfect-research.md |    0
 reference/{ => analysis}/shader-setup-explained.md |    0
 reference/{ => analysis}/strudel-chiptune-guide.md |    0
 {docs => reference/archives}/ANCHOR.md             |    0
 .../archives}/ANCHOR_API_PATTERNS.md               |    0
 .../archives}/ANCHOR_IMPLEMENTATION_PLAN.md        |    0
 {docs => reference/archives}/SHAPES_PLAN.md        |    0
 reference/{ => examples}/dungeon.yue               |    0
 reference/{ => examples}/examples.yue              |    0
... [42 more lines]

On branch main
Your branch is up to date with 'origin/main'.

Changes to be committed:
  (use "git restore --staged <file>..." to unstage)
    new file:   .gitmodules
    new file:   anchor
    new file:   setup.bat
    new file:   yue/README.md
warning: in the working copy of 'setup.bat', LF will be replaced by CRLF the next time Git touches it

[main 8f22ab0] Add Anchor engine as submodule
 4 files changed, 31 insertions(+)
 create mode 100644 .gitmodules
 create mode 160000 anchor
 create mode 100644 setup.bat
 create mode 100644 yue/README.md

To github.com:a327ex/emoji-ball-battles.git
   1583fe2..8f22ab0  main -> main

Exit code 127
/usr/bin/bash: line 1: gh: command not found

Exit code 127
/usr/bin/bash: line 1: gh: command not found

gh version 2.83.2 (2025-12-10)
https://github.com/cli/cli/releases/tag/v2.83.2

File created successfully at: E:\a327ex\Anchor\scripts\new-game.sh

github.com
  ✓ Logged in to github.com account a327ex (keyring)
  - Active account: true
  - Git operations protocol: ssh
  - Token: gho_************************************
  - Token scopes: 'admin:public_key', 'gist', 'read:org', 'repo'

[main 0235fb6] Add new-game.sh script for creating Anchor game projects
 1 file changed, 231 insertions(+)
 create mode 100644 scripts/new-game.sh
warning: in the working copy of 'scripts/new-game.sh', LF will be replaced by CRLF the next time Git touches it
To github.com:a327ex/Anchor.git
   aab2e37..0235fb6  main -> main

1→# CLAUDE.md
     2→
     3→Guidelines for Claude Code instances working on Anchor and games built with it.
     4→
     5→---
     6→
     7→## Engine vs Game
     8→
     9→**Engine** — C code in `engine/src/anchor.c` exposing functions to Lua
    10→**Game** — YueScript code using the engine to build games
    11→**Engine Mode** — when modifying anchor.c or engine behavior
    12→**Game Mode** — when writing gameplay code in YueScript
    13→
    14→---
    15→
    16→## Read First
    17→
    18→**Source of truth:** `engine/src/anchor.c` — the complete engine implementation (~7000 lines, single file).
    19→
    20→**Engine API:**
    21→- `docs/ENGINE_API_QUICK.md` — compact function signatures, one per line (for quick lookup)
    22→- `docs/ENGINE_API.md` — detailed documentation with examples for every function
    23→
    24→**Context:**
    25→- `docs/ANCHOR_CONTEXT_BRIEF.md` — design reasoning, developer working style, how to evaluate features
    26→
    27→**Archived docs** (superseded by anchor.c, kept for historical reference):
    28→- `reference/archives/ANCHOR_IMPLEMENTATION_PLAN.md` — original phased implementation plan
    29→- `reference/archives/ANCHOR.md` — original engine specification
    30→- `reference/archives/ANCHOR_API_PATTERNS.md` — speculative API patterns
... [89 more lines]

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:
     1→# CLAUDE.md
     2→
     3→Guidelines for Claude Code instances working on the Anchor engine.
     4→
     5→---
     6→
     7→## Engine vs Game
     8→
     9→**Engine** — C code in `engine/src/anchor.c` exposing functions to Lua
    10→**Game** — YueScript code using the engine to build games
    11→**Engine Mode** — when modifying anchor.c or engine behavior
    12→**Game Mode** — when writing gameplay code in YueScript
    13→
    14→This is the **Engine** repository. For Game Mode, work from a game's repository (e.g., `emoji-ball-battles/`).
    15→
    16→---
    17→
    18→## Read First
    19→
    20→**Source of truth:** `engine/src/anchor.c` — the complete engine implementation (~7000 lines, single file).
    21→
    22→**Engine API:**
    23→- `docs/ENGINE_API_QUICK.md` — compact function signatures, one per line (for quick lookup)
    24→- `docs/ENGINE_API.md` — detailed documentation with examples for every function
    25→
    26→**Context:**
    27→- `docs/ANCHOR_CONTEXT_BRIEF.md` — design reasoning, developer working style, how to evaluate features
    28→
    29→**YueScript Framework:**
... [91 more lines]

File created successfully at: E:\a327ex\emoji-ball-battles\.claude\CLAUDE.md

File created successfully at: E:\a327ex\emoji-ball-battles\ENGINE_WANTS.md

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 file E:\a327ex\emoji-ball-battles\.claude\CLAUDE.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    25→---
    26→
    27→## Engine Wants
    28→
    29→When you encounter something that would require an engine change (new C function, API modification, etc.) but isn't blocking current work, add it to `docs/ENGINE_WANTS.md` instead of switching to Engine Mode. These get batched and tackled in dedicated Engine Mode sessions.
    30→
    31→---
    32→
    33→## Commands

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.

1→# CLAUDE.md
     2→
     3→Guidelines for Claude Code instances working on Emoji Ball Battles.
     4→
     5→---
     6→
     7→## Engine vs Game
     8→
     9→**Engine** — C code in `anchor/engine/src/anchor.c` exposing functions to Lua  
    10→**Game** — YueScript code using the engine to build games  
    11→**Engine Mode** — when modifying anchor.c or engine behavior  
    12→**Game Mode** — when writing gameplay code in YueScript  
    13→
    14→This is a **Game** repository. For Engine Mode, work from the Anchor repository (`E:/a327ex/Anchor/`).
    15→
    16→---
    17→
    18→## Engine Documentation
    19→
    20→The engine lives in `anchor/` (submodule). Key docs:
    21→- `anchor/docs/ENGINE_API_QUICK.md` — function signatures
    22→- `anchor/docs/ENGINE_API.md` — detailed API with examples
    23→- `anchor/docs/ANCHOR_CONTEXT_BRIEF.md` — design reasoning
    24→
    25→---
    26→
    27→## Engine Wants
    28→
    29→When you encounter something that would require an engine change (new C function, API modification, etc.) but isn't blocking current work, add it to `docs/ENGINE_WANTS.md` instead of switching to Engine Mode. These get batched and tackled in dedicated Engine Mode sessions.
    30→
... [25 more lines]

The file E:\a327ex\emoji-ball-battles\.claude\CLAUDE.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    40→git add -A && git commit -m "Title..."                                                     # Commit
    41→git push origin main                                                                       # Push to GitHub
    42→```
    43→
    44→### Long Responses
    45→
    46→When providing answers that are long or contain multiple code examples, create a markdown file in `reference/` and open it in NeoVim with MarkdownPreview. Use descriptive filenames like `player-movement-notes.md`, `collision-system-analysis.md`.
    47→
    48→```bash
    49→~/bin/neovim.exe reference/filename.md -- -c "MarkdownPreview"   # Open markdown with preview
    50→```
    51→
    52→---
    53→
    54→## Session Workflow

 aab2e376ec9f05dc0ea82303d3b4b9b3f7eb2b16 anchor (heads/main)

User has answered your questions: "The test/ folder in Anchor has .lua files (not .yue). Is this intentional as the engine test harness, or should it eventually migrate to .yue like games?"="We'll remove this in phase 10, we could remove this now, but I want to keep the examples around for a while longer for safety.", "The new-game.sh script creates main.yue, but YueScript compilation isn't integrated yet (Phase 10 work). Should we note this limitation, or hold off using the script until Phase 10?"="We won't use that script for a long time, so it's fine for now, later we'll update it.", "CLAUDE.md mentions syncing docs to website/context/ at session end. Is this still the workflow you want, or has it changed?"="Yes, additionally it should be noted that when files are removed from docs/, website/context/ needs to have those files removed as well.". You can now continue with the user's answers in mind.

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]

The file E:\a327ex\Anchor\docs\ANCHOR_CONTEXT_BRIEF.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   110→## How to Evaluate New Features
   111→
   112→When reviewing other engines/frameworks, ask:
   113→
   114→1. **Does Anchor already have this?** (Check `reference/archives/ANCHOR.md`, the object tree might already cover it)
   115→
   116→2. **Does this fit the locality principle?** (Keeps related code together vs. scatters it)
   117→
   118→3. **What's the bureaucracy cost?** (Setup, configuration, boilerplate)

1→# CLAUDE.md
     2→
     3→Guidelines for Claude Code instances working on the Anchor engine.
     4→
     5→---
     6→
     7→## Engine vs Game
     8→
     9→**Engine** — C code in `engine/src/anchor.c` exposing functions to Lua  
    10→**Game** — YueScript code using the engine to build games  
    11→**Engine Mode** — when modifying anchor.c or engine behavior  
    12→**Game Mode** — when writing gameplay code in YueScript  
    13→
    14→This is the **Engine** repository. For Game Mode, work from a game's repository (e.g., `emoji-ball-battles/`).
    15→
    16→---
    17→
    18→## Read First
    19→
    20→**Source of truth:** `engine/src/anchor.c` — the complete engine implementation (~7000 lines, single file).
    21→
    22→**Engine API:**
    23→- `docs/ENGINE_API_QUICK.md` — compact function signatures, one per line (for quick lookup)
    24→- `docs/ENGINE_API.md` — detailed documentation with examples for every function
    25→
    26→**Context:**
    27→- `docs/ANCHOR_CONTEXT_BRIEF.md` — design reasoning, developer working style, how to evaluate features
    28→
    29→**YueScript Framework:**
    30→- `engine/yue/` — framework classes (object, timer, spring, collider, etc.)
... [90 more lines]

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:
    46→./scripts/new-game.sh <name>                  # Create new game project
    47→./scripts/patch-claude-code.sh               # Fix Windows timestamp bug (after CC updates)
    48→```
    49→
    50→### Session End
    51→
    52→```bash
    53→ls -t ~/.claude/projects/E--a327ex-Anchor/*.jsonl | grep -v agent | head -1   # Find latest transcript
    54→python scripts/jsonl-to-markdown.py [in.jsonl] website/logs/title-slug.md     # Convert transcript
    55→cp .claude/CLAUDE.md docs/* website/context/                                   # Sync context files
    56→git add -A && git commit -m "Title..."                                         # Commit (see format below)
    57→git push origin main                                                           # Push to GitHub
    58→git subtree push --prefix=website blot master                                  # Push website to Blot
    59→```
    60→
    61→**Note:** If files are removed from `docs/`, also remove them from `website/context/`.
    62→
    63→### Quick Website Push
    64→
    65→```bash

ANCHOR.md
ANCHOR_API_PATTERNS.md
ANCHOR_CONTEXT_BRIEF.md
ANCHOR_IMPLEMENTATION_PLAN.md
CLAUDE.md
dungeon.yue
SESSION_WORKFLOW.md
SHAPES_PLAN.md
snkrx.yue
swarm_survival.yue

ANCHOR_CONTEXT_BRIEF.md
CLAUDE.md
ENGINE_API.md
ENGINE_API_QUICK.md
SESSION_WORKFLOW.md

On branch main
Your branch is up to date with 'origin/main'.

Changes not staged for commit:
  (use "git add/rm <file>..." to update what will be committed)
  (use "git restore <file>..." to discard changes in working directory)
    modified:   .claude/CLAUDE.md
    modified:   docs/ANCHOR_CONTEXT_BRIEF.md
    deleted:    website/context/ANCHOR.md
    deleted:    website/context/ANCHOR_API_PATTERNS.md
    modified:   website/context/ANCHOR_CONTEXT_BRIEF.md
    deleted:    website/context/ANCHOR_IMPLEMENTATION_PLAN.md
    modified:   website/context/CLAUDE.md
    deleted:    website/context/SHAPES_PLAN.md
    deleted:    website/context/dungeon.yue
    deleted:    website/context/snkrx.yue
    deleted:    website/context/swarm_survival.yue

Untracked files:
  (use "git add <file>..." to include in what will be committed)
    website/context/ENGINE_API.md
    website/context/ENGINE_API_QUICK.md

no changes added to commit (use "git add" and/or "git commit -a")

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 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:
    91→### Always Build, Never Run
    92→
    93→**Always build the engine after making C code changes** (see [Commands](#commands)). **Never run the executable** — the user will run and test themselves. Don't execute `./build/anchor.exe`, `run-web.bat`, or similar.
    94→
    95→### When to Ask
    96→
    97→Use the `AskUserQuestion` tool liberally. The developer prefers being asked over having Claude guess wrong.
    98→
    99→**Ask first:**
   100→- Architecture decisions
   101→- API design choices
   102→- Anything that could be done multiple valid ways
   103→- When uncertain about intent or priorities
   104→- When you have multiple questions (batch them into one AskUserQuestion call)
   105→
   106→**Proceed, then explain:**
   107→- Implementation details where the path is clear
   108→- Performance optimization (get it working first, optimize later)
   109→
   110→### Pacing
   111→
   112→- Work incrementally — complete one piece, let them test, get feedback

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.

1→# CLAUDE.md
     2→
     3→Guidelines for Claude Code instances working on Emoji Ball Battles.
     4→
     5→---
     6→
     7→## Engine vs Game
     8→
     9→**Engine** — C code in `anchor/engine/src/anchor.c` exposing functions to Lua  
    10→**Game** — YueScript code using the engine to build games  
    11→**Engine Mode** — when modifying anchor.c or engine behavior  
    12→**Game Mode** — when writing gameplay code in YueScript  
    13→
    14→This is a **Game** repository. For Engine Mode, work from the Anchor repository (`E:/a327ex/Anchor/`).
    15→
    16→---
    17→
    18→## Engine Documentation
    19→
    20→The engine lives in `anchor/` (submodule). Key docs:
    21→- `anchor/docs/ENGINE_API_QUICK.md` — function signatures
    22→- `anchor/docs/ENGINE_API.md` — detailed API with examples
    23→- `anchor/docs/ANCHOR_CONTEXT_BRIEF.md` — design reasoning
    24→
    25→---
    26→
    27→## Engine Wants
    28→
    29→When you encounter something that would require an engine change (new C function, API modification, etc.) but isn't blocking current work, add it to `docs/ENGINE_WANTS.md` instead of switching to Engine Mode. These get batched and tackled in dedicated Engine Mode sessions.
    30→
... [27 more lines]

The file E:\a327ex\emoji-ball-battles\.claude\CLAUDE.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    50→```
    51→
    52→---
    53→
    54→## When to Ask
    55→
    56→Use the `AskUserQuestion` tool liberally. The developer prefers being asked over having Claude guess wrong.
    57→
    58→**Ask first:**
    59→- Design decisions (gameplay feel, mechanics, UI)
    60→- Anything that could be done multiple valid ways
    61→- When uncertain about intent or priorities
    62→- When you have multiple questions (batch them into one AskUserQuestion call)
    63→
    64→**Proceed, then explain:**
    65→- Implementation details where the path is clear
    66→
    67→---
    68→
    69→## Session Workflow
    70→
    71→When the user asks to end the session, convert the transcript and commit. Game sessions don't push to Blot (that's Anchor's website).
    72→

/c/Users/adn/.claude/projects/E--a327ex-Anchor/28203af7-838b-4755-951e-5a7454f9a6ee.jsonl

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