Anchor Review 3

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1→# Anchor Review 2
     2→
     3→## Summary
     4→
     5→Comprehensive review, code cleanup, documentation, and reorganization of the Anchor project. Established "Engine" vs "Game" terminology and separated the engine repository from game repositories using git submodules.
     6→
     7→**anchor.c Low-Level Code Fixes:**
     8→- Removed redundant `batch_flush` forward declaration
     9→- Updated outdated gamepad comment
    10→- Removed unused `shader_set_*` functions
    11→- Renamed functions for consistency: `l_is_down` → `l_input_is_down`, `l_rgba` → `l_color_rgba`, `l_noise` → `l_random_noise`
    12→- Added unions to `DrawCommand` struct for cleaner field usage (color/uniform_location, texture_id/shader_id)
    13→- Added texture registry and `texture_unload` function
    14→- Added effect shader registry for cleanup
    15→- Fixed `physics_raycast` tag filtering bug (now uses callback-based approach to filter during raycast)
    16→- Moved PI definition to top of file
    17→
    18→**anchor.c Organizational Improvements:**
    19→- Added file overview comment with structural roadmap at top
    20→- Added section banners throughout (CONFIGURATION, PHYSICS, RESOURCES, LAYER, BATCH RENDERING, INPUT, RENDERING PIPELINE, LUA BINDINGS, MAIN LOOP)
    21→- Updated forward declarations with line number references
    22→- Added see-also cross-references for scattered code (physics events, PCG32)
    23→- Added consistent subsystem comments in `register_lua_bindings()` (Layer & Texture, Font, Audio, Effect Shaders, Physics sections, Random, Input sections)
    24→
    25→**Engine vs Game Terminology:**
    26→- Established "Engine" = C code in anchor.c, "Game" = YueScript gameplay code
    27→- Established "Engine Mode" = modifying anchor.c, "Game Mode" = writing gameplay code
    28→- Removed "Comment Style" guideline from CLAUDE.md
    29→
    30→**Engine API Documentation:**
... [170 more lines]

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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>
    25→
    26→#ifdef _WIN32
    27→#include <direct.h>  // _chdir
    28→#else
    29→#include <unistd.h>  // chdir
    30→#endif
... [970 more lines]

1000→
  1001→    // Create OpenGL texture from RGBA atlas
  1002→    // Use appropriate filtering based on mode
  1003→    GLint tex_filter = (filter_mode == FILTER_ROUGH) ? GL_NEAREST : GL_LINEAR;
  1004→    glGenTextures(1, &font->atlas_texture);
  1005→    glBindTexture(GL_TEXTURE_2D, font->atlas_texture);
  1006→    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, FONT_ATLAS_SIZE, FONT_ATLAS_SIZE, 0,
  1007→                 GL_RGBA, GL_UNSIGNED_BYTE, rgba_bitmap);
  1008→    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, tex_filter);
  1009→    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, tex_filter);
  1010→    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
  1011→    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
  1012→    glBindTexture(GL_TEXTURE_2D, 0);
  1013→
  1014→    free(rgba_bitmap);
  1015→
  1016→    // Register font
  1017→    font_registry[font_count++] = font;
  1018→    printf("Loaded font: %s (%.1fpx, %s) atlas=%dx%d\n", name, size,
  1019→           filter_mode == FILTER_ROUGH ? "rough" : "smooth",
  1020→           FONT_ATLAS_SIZE, FONT_ATLAS_SIZE);
  1021→    return font;
  1022→}
  1023→
  1024→static void font_unload(const char* name) {
  1025→    for (int i = 0; i < font_count; i++) {
  1026→        if (strcmp(font_registry[i]->name, name) == 0) {
  1027→            Font* font = font_registry[i];
  1028→            if (font->atlas_texture) glDeleteTextures(1, &font->atlas_texture);
  1029→            free(font);
... [970 more lines]

2000→    if (strcmp(name, "leftshoulder") == 0 || strcmp(name, "lb") == 0) return SDL_CONTROLLER_BUTTON_LEFTSHOULDER;
  2001→    if (strcmp(name, "rightshoulder") == 0 || strcmp(name, "rb") == 0) return SDL_CONTROLLER_BUTTON_RIGHTSHOULDER;
  2002→    if (strcmp(name, "dpup") == 0) return SDL_CONTROLLER_BUTTON_DPAD_UP;
  2003→    if (strcmp(name, "dpdown") == 0) return SDL_CONTROLLER_BUTTON_DPAD_DOWN;
  2004→    if (strcmp(name, "dpleft") == 0) return SDL_CONTROLLER_BUTTON_DPAD_LEFT;
  2005→    if (strcmp(name, "dpright") == 0) return SDL_CONTROLLER_BUTTON_DPAD_RIGHT;
  2006→    return SDL_CONTROLLER_BUTTON_INVALID;
  2007→}
  2008→
  2009→// Convert gamepad axis name to SDL axis enum
  2010→// Returns axis index in lower bits, sign in bit 8 (0x100 = positive, 0 = negative)
  2011→static int gamepad_axis_from_name(const char* name) {
  2012→    if (!name) return -1;
  2013→    int len = strlen(name);
  2014→    if (len < 2) return -1;
  2015→
  2016→    // Check for +/- suffix
  2017→    int sign = 0;  // 0 = full axis (no sign), 1 = positive, -1 = negative
  2018→    char axis_name[32];
  2019→    strncpy(axis_name, name, sizeof(axis_name) - 1);
  2020→    axis_name[sizeof(axis_name) - 1] = '\0';
  2021→
  2022→    if (axis_name[len - 1] == '+') {
  2023→        sign = 1;
  2024→        axis_name[len - 1] = '\0';
  2025→    } else if (axis_name[len - 1] == '-') {
  2026→        sign = -1;
  2027→        axis_name[len - 1] = '\0';
  2028→    }
  2029→
... [970 more lines]

3000→            action->controls[i].code == ctrl.code &&
  3001→            action->controls[i].sign == ctrl.sign) {
  3002→            // Shift remaining controls down
  3003→            for (int j = i; j < action->control_count - 1; j++) {
  3004→                action->controls[j] = action->controls[j + 1];
  3005→            }
  3006→            action->control_count--;
  3007→            return true;
  3008→        }
  3009→    }
  3010→    return false;
  3011→}
  3012→
  3013→// Unbind all controls from an action
  3014→static void input_unbind_all_controls(const char* action_name) {
  3015→    Action* action = action_find(action_name);
  3016→    if (action) {
  3017→        action->control_count = 0;
  3018→    }
  3019→}
  3020→
  3021→// Bind all standard inputs to actions with matching names
  3022→// Keys become actions like 'a', 'space', 'left', etc.
  3023→// Mouse buttons become 'mouse_1', 'mouse_2', etc.
  3024→static void input_bind_all_defaults(void) {
  3025→    // Letters a-z
  3026→    for (char c = 'a'; c <= 'z'; c++) {
  3027→        char action_name[2] = {c, '\0'};
  3028→        char control_str[8];
  3029→        snprintf(control_str, sizeof(control_str), "key:%c", c);
... [970 more lines]

6300→    const char* name = luaL_checkstring(L, 1);
  6301→    float duration = (float)luaL_checknumber(L, 2);
  6302→    const char* source_action = luaL_checkstring(L, 3);
  6303→    lua_pushboolean(L, input_bind_hold_internal(name, duration, source_action));
  6304→    return 1;
  6305→}
  6306→
  6307→// input_get_hold_duration(name) - returns how long the source action has been held
  6308→static int l_input_get_hold_duration(lua_State* L) {
  6309→    const char* name = luaL_checkstring(L, 1);
  6310→    lua_pushnumber(L, input_get_hold_duration(name));
  6311→    return 1;
  6312→}
  6313→
  6314→// input_get_last_type() - returns 'keyboard', 'mouse', or 'gamepad'
  6315→static int l_input_get_last_type(lua_State* L) {
  6316→    lua_pushstring(L, input_type_to_string(last_input_type));
  6317→    return 1;
  6318→}
  6319→
  6320→// Capture mode for rebinding
  6321→static int l_input_start_capture(lua_State* L) {
  6322→    (void)L;
  6323→    input_start_capture();
  6324→    return 0;
  6325→}
  6326→
  6327→static int l_input_get_captured(lua_State* L) {
  6328→    const char* captured = input_get_captured();
  6329→    if (captured) {
... [770 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

4000→    if (loc != -1) glUniform1f(loc, value);
  4001→    return 0;
  4002→}
  4003→
  4004→static int l_shader_set_vec2(lua_State* L) {
  4005→    GLuint shader = (GLuint)luaL_checkinteger(L, 1);
  4006→    const char* name = luaL_checkstring(L, 2);
  4007→    float x = (float)luaL_checknumber(L, 3);
  4008→    float y = (float)luaL_checknumber(L, 4);
  4009→    glUseProgram(shader);
  4010→    GLint loc = glGetUniformLocation(shader, name);
  4011→    if (loc != -1) glUniform2f(loc, x, y);
  4012→    return 0;
  4013→}
  4014→
  4015→static int l_shader_set_vec4(lua_State* L) {
  4016→    GLuint shader = (GLuint)luaL_checkinteger(L, 1);
  4017→    const char* name = luaL_checkstring(L, 2);
  4018→    float x = (float)luaL_checknumber(L, 3);
  4019→    float y = (float)luaL_checknumber(L, 4);
  4020→    float z = (float)luaL_checknumber(L, 5);
  4021→    float w = (float)luaL_checknumber(L, 6);
  4022→    glUseProgram(shader);
  4023→    GLint loc = glGetUniformLocation(shader, name);
  4024→    if (loc != -1) glUniform4f(loc, x, y, z, w);
  4025→    return 0;
  4026→}
  4027→
  4028→static int l_shader_set_int(lua_State* L) {
  4029→    GLuint shader = (GLuint)luaL_checkinteger(L, 1);
... [1770 more lines]

1→# Engine API Reference
     2→
     3→Detailed documentation for all C-to-Lua bindings in the Anchor engine. For a compact signature list, see `ENGINE_API_QUICK.md`.
     4→
     5→---
     6→
     7→## Layer & Texture
     8→
     9→### layer_create
    10→
    11→`layer_create(name) -> layer`
    12→
    13→Gets or creates a named layer. Layers are FBOs that can be drawn to and composited.
    14→
    15→```lua
    16→local game_layer = layer_create("game")
    17→local ui_layer = layer_create("ui")
    18→```
    19→
    20→### layer_rectangle
    21→
    22→`layer_rectangle(layer, x, y, w, h, color)`
    23→
    24→Draws a filled rectangle with top-left corner at (x, y).
    25→
    26→```lua
    27→layer_rectangle(layer, 100, 100, 50, 30, rgba(255, 0, 0))  -- top-left at (100, 100)
    28→```
    29→
    30→### layer_circle
... [1836 more lines]

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5540→    return 1;
  5541→}
  5542→
  5543→// physics_query_polygon(x, y, vertices, tags) -> array of bodies
  5544→static int l_physics_query_polygon(lua_State* L) {
  5545→    float x = (float)luaL_checknumber(L, 1) / pixels_per_meter;
  5546→    float y = (float)luaL_checknumber(L, 2) / pixels_per_meter;
  5547→    luaL_checktype(L, 3, LUA_TTABLE);
  5548→    luaL_checktype(L, 4, LUA_TTABLE);
  5549→
  5550→    // Get vertices from table
  5551→    int vertex_count = (int)lua_rawlen(L, 3);
  5552→    if (vertex_count < 3 || vertex_count > B2_MAX_POLYGON_VERTICES) {
  5553→        return luaL_error(L, "Polygon must have 3-%d vertices, got %d", B2_MAX_POLYGON_VERTICES, vertex_count);
  5554→    }
  5555→
  5556→    b2Vec2 points[B2_MAX_POLYGON_VERTICES];
  5557→    for (int i = 0; i < vertex_count; i++) {
  5558→        lua_rawgeti(L, 3, i + 1);  // Get vertex table at index i+1
  5559→        if (!lua_istable(L, -1)) {
  5560→            return luaL_error(L, "Vertex %d must be a table {x, y}", i + 1);
  5561→        }
  5562→        lua_rawgeti(L, -1, 1);  // Get x
  5563→        lua_rawgeti(L, -2, 2);  // Get y
  5564→        float vx = (float)lua_tonumber(L, -2) / pixels_per_meter;
  5565→        float vy = (float)lua_tonumber(L, -1) / pixels_per_meter;
  5566→        points[i] = (b2Vec2){vx, vy};
  5567→        lua_pop(L, 3);  // Pop x, y, vertex table
  5568→    }
  5569→
... [30 more lines]

4695→    return 1;
  4696→}
  4697→
  4698→// Step 7: Body properties - Position/rotation setters
  4699→static int l_physics_set_position(lua_State* L) {
  4700→    b2BodyId* body_id = (b2BodyId*)lua_touserdata(L, 1);
  4701→    if (!body_id || !b2Body_IsValid(*body_id)) {
  4702→        return luaL_error(L, "Invalid body");
  4703→    }
  4704→    float x = (float)luaL_checknumber(L, 2) / pixels_per_meter;
  4705→    float y = (float)luaL_checknumber(L, 3) / pixels_per_meter;
  4706→    b2Rot rot = b2Body_GetRotation(*body_id);
  4707→    b2Body_SetTransform(*body_id, (b2Vec2){x, y}, rot);
  4708→    return 0;
  4709→}
  4710→
  4711→static int l_physics_set_angle(lua_State* L) {
  4712→    b2BodyId* body_id = (b2BodyId*)lua_touserdata(L, 1);
  4713→    if (!body_id || !b2Body_IsValid(*body_id)) {
  4714→        return luaL_error(L, "Invalid body");
  4715→    }
  4716→    float angle = (float)luaL_checknumber(L, 2);
  4717→    b2Vec2 pos = b2Body_GetPosition(*body_id);
  4718→    b2Body_SetTransform(*body_id, pos, b2MakeRot(angle));
  4719→    return 0;
  4720→}
  4721→
  4722→static int l_physics_set_transform(lua_State* L) {
  4723→    b2BodyId* body_id = (b2BodyId*)lua_touserdata(L, 1);
  4724→    if (!body_id || !b2Body_IsValid(*body_id)) {
... [130 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

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:
  5539→    }
  5540→    return 1;
  5541→}
  5542→
  5543→// physics_query_polygon(x, y, vertices, tags) -> array of bodies
  5544→// vertices is a flat array: {x1, y1, x2, y2, ...}
  5545→static int l_physics_query_polygon(lua_State* L) {
  5546→    float x = (float)luaL_checknumber(L, 1) / pixels_per_meter;
  5547→    float y = (float)luaL_checknumber(L, 2) / pixels_per_meter;
  5548→    luaL_checktype(L, 3, LUA_TTABLE);
  5549→    luaL_checktype(L, 4, LUA_TTABLE);
  5550→
  5551→    // Get vertices from flat array {x1, y1, x2, y2, ...}
  5552→    int len = (int)lua_rawlen(L, 3);
  5553→    if (len < 6 || len % 2 != 0) {
  5554→        return luaL_error(L, "Polygon needs at least 3 vertices (6 numbers)");
  5555→    }
  5556→
  5557→    int vertex_count = len / 2;
  5558→    if (vertex_count > B2_MAX_POLYGON_VERTICES) {
  5559→        return luaL_error(L, "Too many vertices (max %d)", B2_MAX_POLYGON_VERTICES);
  5560→    }
  5561→
  5562→    b2Vec2 points[B2_MAX_POLYGON_VERTICES];
  5563→    for (int i = 0; i < vertex_count; i++) {
  5564→        lua_rawgeti(L, 3, i * 2 + 1);
  5565→        lua_rawgeti(L, 3, i * 2 + 2);
  5566→        points[i].x = (float)lua_tonumber(L, -2) / pixels_per_meter;
  5567→        points[i].y = (float)lua_tonumber(L, -1) / pixels_per_meter;
... [6 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

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:
  3989→    effect_shader_destroy(shader);
  3990→    return 0;
  3991→}
  3992→
  3993→// Immediate shader uniform setters (applied now, for use with layer_draw_from)
  3994→static int l_shader_set_float_immediate(lua_State* L) {
  3995→    GLuint shader = (GLuint)luaL_checkinteger(L, 1);
  3996→    const char* name = luaL_checkstring(L, 2);
  3997→    float value = (float)luaL_checknumber(L, 3);
  3998→    glUseProgram(shader);
  3999→    GLint loc = glGetUniformLocation(shader, name);
  4000→    if (loc != -1) glUniform1f(loc, value);
  4001→    return 0;
  4002→}
  4003→
  4004→static int l_shader_set_vec2_immediate(lua_State* L) {
  4005→    GLuint shader = (GLuint)luaL_checkinteger(L, 1);
  4006→    const char* name = luaL_checkstring(L, 2);
  4007→    float x = (float)luaL_checknumber(L, 3);
  4008→    float y = (float)luaL_checknumber(L, 4);
  4009→    glUseProgram(shader);
  4010→    GLint loc = glGetUniformLocation(shader, name);
  4011→    if (loc != -1) glUniform2f(loc, x, y);
  4012→    return 0;
  4013→}
  4014→
  4015→static int l_shader_set_vec4_immediate(lua_State* L) {
  4016→    GLuint shader = (GLuint)luaL_checkinteger(L, 1);
  4017→    const char* name = luaL_checkstring(L, 2);
... [23 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:
  6545→    // --- Effect Shaders ---
  6546→    lua_register(L, "shader_load_file", l_shader_load_file);
  6547→    lua_register(L, "shader_load_string", l_shader_load_string);
  6548→    lua_register(L, "shader_destroy", l_shader_destroy);
  6549→    lua_register(L, "shader_set_float_immediate", l_shader_set_float_immediate);
  6550→    lua_register(L, "shader_set_vec2_immediate", l_shader_set_vec2_immediate);
  6551→    lua_register(L, "shader_set_vec4_immediate", l_shader_set_vec4_immediate);
  6552→    lua_register(L, "shader_set_int_immediate", l_shader_set_int_immediate);
  6553→    lua_register(L, "layer_shader_set_float", l_layer_shader_set_float);
  6554→    lua_register(L, "layer_shader_set_vec2", l_layer_shader_set_vec2);
  6555→    lua_register(L, "layer_shader_set_vec4", l_layer_shader_set_vec4);
  6556→    lua_register(L, "layer_shader_set_int", l_layer_shader_set_int);

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

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 (search for section banners):
     6→ *
     7→ * - Includes, constants, core structs (DrawCommand, Layer)
     8→ * - Physics foundation (tags, events, PCG32 random)
     9→ * - Resources (Texture, Font, Sound, Music)
    10→ * - Layer system (FBO, transforms, command queue, batching)
    11→ * - Input system (keyboard, mouse, gamepad, actions, chords, sequences, holds)
    12→ * - Rendering pipeline (shader execution, command processing)
    13→ * - Lua bindings: Rendering, Physics, Random, Input
    14→ * - Lua registration (register_lua_bindings)
    15→ * - Shader sources and compilation
    16→ * - Main loop, initialization, shutdown
    17→ */
    18→
    19→#include <stdio.h>
    20→#include <stdlib.h>
    21→#include <stdbool.h>

4697:// Step 7: Body properties - Position/rotation setters
4733:// Step 7: Body properties - Velocity
4776:// Step 7: Body properties - Forces/impulses
4847:// Step 7: Body properties - Damping, gravity scale, fixed rotation, bullet
4900:// Step 7: Body properties - User data
4921:// Step 7: Shape properties - Friction and restitution
5049:// Step 8: Debug function to print event counts

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:
  4693→    *ud = shape_id;
  4694→    return 1;
  4695→}
  4696→
  4697→static int l_physics_set_position(lua_State* L) {
  4698→    b2BodyId* body_id = (b2BodyId*)lua_touserdata(L, 1);
  4699→    if (!body_id || !b2Body_IsValid(*body_id)) {
  4700→        return luaL_error(L, "Invalid body");
  4701→    }

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:
  4728→    b2Body_SetTransform(*body_id, (b2Vec2){x, y}, b2MakeRot(angle));
  4729→    return 0;
  4730→}
  4731→
  4732→static int l_physics_get_velocity(lua_State* L) {
  4733→    b2BodyId* body_id = (b2BodyId*)lua_touserdata(L, 1);
  4734→    if (!body_id || !b2Body_IsValid(*body_id)) {
  4735→        return luaL_error(L, "Invalid body");
  4736→    }

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:
  4770→    b2Body_SetAngularVelocity(*body_id, av);
  4771→    return 0;
  4772→}
  4773→
  4774→static int l_physics_apply_force(lua_State* L) {
  4775→    b2BodyId* body_id = (b2BodyId*)lua_touserdata(L, 1);
  4776→    if (!body_id || !b2Body_IsValid(*body_id)) {
  4777→        return luaL_error(L, "Invalid body");
  4778→    }

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:
  4840→    b2Body_ApplyAngularImpulse(*body_id, impulse, true);
  4841→    return 0;
  4842→}
  4843→
  4844→static int l_physics_set_linear_damping(lua_State* L) {
  4845→    b2BodyId* body_id = (b2BodyId*)lua_touserdata(L, 1);
  4846→    if (!body_id || !b2Body_IsValid(*body_id)) {
  4847→        return luaL_error(L, "Invalid body");
  4848→    }

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:
  4892→    b2Body_SetBullet(*body_id, bullet);
  4893→    return 0;
  4894→}
  4895→
  4896→static int l_physics_set_user_data(lua_State* L) {
  4897→    b2BodyId* body_id = (b2BodyId*)lua_touserdata(L, 1);
  4898→    if (!body_id || !b2Body_IsValid(*body_id)) {
  4899→        return luaL_error(L, "Invalid body");
  4900→    }

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:
  4912→    lua_pushinteger(L, (lua_Integer)(intptr_t)data);
  4913→    return 1;
  4914→}
  4915→
  4916→static int l_physics_shape_set_friction(lua_State* L) {
  4917→    b2ShapeId* shape_id = (b2ShapeId*)lua_touserdata(L, 1);
  4918→    if (!shape_id || !b2Shape_IsValid(*shape_id)) {
  4919→        return luaL_error(L, "Invalid shape");
  4920→    }

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:
  5039→    b2Body_SetAwake(*body_id, awake);
  5040→    return 0;
  5041→}
  5042→
  5043→static int l_physics_debug_events(lua_State* L) {
  5044→    printf("Physics Events - Contact Begin: %d, End: %d, Hit: %d | Sensor Begin: %d, End: %d\n",
  5045→           contact_begin_count, contact_end_count, hit_count,
  5046→           sensor_begin_count, sensor_end_count);
  5047→    return 0;

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

5051:// See also: Event buffer structs at ~line 250, event processing at ~line 370

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:
  5046→           sensor_begin_count, sensor_end_count);
  5047→    return 0;
  5048→}
  5049→
  5050→// Event query functions
  5051→// Helper to check if two tag indices match (in either order)
  5052→static bool tags_match(int event_tag_a, int event_tag_b, int query_tag_a, int query_tag_b) {
  5053→    return (event_tag_a == query_tag_a && event_tag_b == query_tag_b) ||
  5054→           (event_tag_a == query_tag_b && event_tag_b == query_tag_a);
  5055→}

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

The file E:\a327ex\Anchor\docs\ENGINE_API.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   150→-- Copy without shader (passthrough)
   151→layer_draw_from(composite_layer, game_layer)
   152→```
   153→
   154→### shader_set_float_immediate
   155→
   156→`shader_set_float_immediate(shader, name, value)`
   157→
   158→Sets a float uniform on a shader immediately. Use before `layer_draw_from`.
   159→
   160→```lua
   161→shader_set_float_immediate(blur_shader, "u_radius", 5.0)
   162→```
   163→
   164→### shader_set_vec2_immediate
   165→
   166→`shader_set_vec2_immediate(shader, name, x, y)`
   167→
   168→Sets a vec2 uniform on a shader immediately.
   169→
   170→```lua
   171→shader_set_vec2_immediate(outline_shader, "u_pixel_size", 1/480, 1/270)
   172→```
   173→
   174→### shader_set_vec4_immediate
   175→
   176→`shader_set_vec4_immediate(shader, name, x, y, z, w)`
   177→
   178→Sets a vec4 uniform on a shader immediately.
... [18 more lines]

The file E:\a327ex\Anchor\docs\ENGINE_API.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1290→```lua
  1291→local in_path = physics_query_capsule(start_x, start_y, end_x, end_y, 10, {"wall"})
  1292→```
  1293→
  1294→### physics_query_polygon
  1295→
  1296→`physics_query_polygon(x, y, vertices, tags) -> [body, ...]`
  1297→
  1298→Finds all bodies overlapping a polygon. Vertices are a flat array: {x1, y1, x2, y2, ...}.
  1299→
  1300→```lua
  1301→local verts = {-20, -20, 20, -20, 0, 30}
  1302→local in_triangle = physics_query_polygon(100, 100, verts, {"enemy"})
  1303→```
  1304→
  1305→### physics_raycast
  1306→
  1307→`physics_raycast(x1, y1, x2, y2, tags) -> {body, shape, point_x, point_y, normal_x, normal_y, fraction} | nil`

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

The file E:\a327ex\Anchor\docs\ENGINE_API_QUICK.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    17→layer_reset_effects(layer)
    18→layer_render(layer)
    19→layer_clear(layer)
    20→layer_draw_from(dst, src, shader?)
    21→shader_set_float_immediate(shader, name, value)
    22→shader_set_vec2_immediate(shader, name, x, y)
    23→shader_set_vec4_immediate(shader, name, x, y, z, w)
    24→shader_set_int_immediate(shader, name, value)
    25→texture_load(path) -> texture
    26→texture_unload(texture)
    27→texture_get_width(texture) -> int
    28→texture_get_height(texture) -> int

175:physics_query_polygon(x, y, vertices, tags) -> [body, ...]

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(217): warning C4996: 'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(894): 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(1094): 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(2018): 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(2012): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
src/anchor.c(2404): 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(2682): 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(2688): 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(2798): 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(2807): 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(2901): 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(2903): 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(3603): 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(4251): 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(7010): warning C4996: 'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(7014): warning C4996: 'strcat': This function or variable may be unsafe. Consider using strcat_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(7019): warning C4996: 'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(7023): warning C4996: 'strcat': This function or variable may be unsafe. Consider using strcat_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(7029): warning C4996: 'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(7033): warning C4996: 'strcat': This function or variable may be unsafe. Consider using strcat_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(7039): warning C4996: 'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(7043): warning C4996: 'strcat': This function or variable may be unsafe. Consider using strcat_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
Copied to emoji-ball-battles/tools/

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

The file E:\a327ex\Anchor\reference\anchor-review-3-findings.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   122→- Consider adding a note about the polygon vertex format difference
   123→
   124→---
   125→
   126→## Recommended Actions
   127→
   128→1. **Decide on polygon format** - Choose one format and update the inconsistent function
   129→2. **Remove or update** the FILE STRUCTURE header line numbers
   130→3. **Remove** the "Step N:" development comments
   131→4. **Update or remove** the cross-reference line numbers at line 5059
   132→
   133→---
   134→
   135→## Actions Taken
   136→
   137→All issues have been resolved:
   138→
   139→1. **Polygon vertex format** - Unified to flat arrays. `physics_query_polygon` now uses `{x1, y1, x2, y2, ...}` format, matching `physics_add_polygon`.
   140→
   141→2. **Immediate shader functions** - Renamed for clarity:
   142→   - `shader_set_float` → `shader_set_float_immediate`
   143→   - `shader_set_vec2` → `shader_set_vec2_immediate`
   144→   - `shader_set_vec4` → `shader_set_vec4_immediate`
   145→   - `shader_set_int` → `shader_set_int_immediate`
   146→
   147→3. **FILE STRUCTURE header** - Removed line numbers, now just lists sections with "(search for section banners)" guidance.
   148→
   149→4. **Step N comments** - All removed.
   150→
... [6 more lines]

E:\a327ex\Anchor\framework\main.yue:816:  shader_set_vec2 an.shaders.outline, "u_pixel_size", 1/W, 1/H
E:\a327ex\Anchor\framework\main.lua:816:shader_set_vec2(an.shaders.outline, "u_pixel_size", 1 / W, 1 / H)
E:\a327ex\Anchor\framework\anchor\layer.lua:191:layer_apply_shader(self.handle, shader)end, shader_set_float = function(self, shader, name, value)return 
E:\a327ex\Anchor\framework\anchor\layer.lua:205:layer_shader_set_float(self.handle, shader, name, value)end, shader_set_vec2 = function(self, shader, name, x, y)return 
E:\a327ex\Anchor\framework\anchor\layer.lua:219:layer_shader_set_vec2(self.handle, shader, name, x, y)end, shader_set_vec4 = function(self, shader, name, x, y, z, w)return 
E:\a327ex\Anchor\framework\anchor\layer.lua:233:layer_shader_set_vec4(self.handle, shader, name, x, y, z, w)end, shader_set_int = function(self, shader, name, value)return 
E:\a327ex\Anchor\framework\anchor\layer.lua:247:layer_shader_set_int(self.handle, shader, name, value)end, get_texture = function(self)return 
E:\a327ex\Anchor\framework\anchor\layer.yue:197:      layer\shader_set_float an.shaders.blur, 'u_radius', 5.0
E:\a327ex\Anchor\framework\anchor\layer.yue:204:  shader_set_float: (shader, name, value) =>
E:\a327ex\Anchor\framework\anchor\layer.yue:205:    layer_shader_set_float @handle, shader, name, value
E:\a327ex\Anchor\framework\anchor\layer.yue:211:      layer\shader_set_vec2 an.shaders.outline, 'u_pixel_size', 1/480, 1/270
E:\a327ex\Anchor\framework\anchor\layer.yue:218:  shader_set_vec2: (shader, name, x, y) =>
E:\a327ex\Anchor\framework\anchor\layer.yue:219:    layer_shader_set_vec2 @handle, shader, name, x, y
E:\a327ex\Anchor\framework\anchor\layer.yue:225:      layer\shader_set_vec4 an.shaders.tint, 'u_color', 1.0, 0.5, 0.0, 1.0
E:\a327ex\Anchor\framework\anchor\layer.yue:232:  shader_set_vec4: (shader, name, x, y, z, w) =>
E:\a327ex\Anchor\framework\anchor\layer.yue:233:    layer_shader_set_vec4 @handle, shader, name, x, y, z, w
E:\a327ex\Anchor\framework\anchor\layer.yue:239:      layer\shader_set_int an.shaders.effect, 'u_mode', 2
E:\a327ex\Anchor\framework\anchor\layer.yue:246:  shader_set_int: (shader, name, value) =>
E:\a327ex\Anchor\framework\anchor\layer.yue:247:    layer_shader_set_int @handle, shader, name, value
E:\a327ex\Anchor\framework\anchor\layer.yue:254:      layer\shader_set_int shader, "u_texture", tex

810→
   811→  -- 2. Create derived layers (copy through shaders)
   812→  shadow\clear!
   813→  shadow\draw_from game, an.shaders.shadow
   814→  shadow\draw_from game_2, an.shaders.shadow
   815→
   816→  shader_set_vec2 an.shaders.outline, "u_pixel_size", 1/W, 1/H
   817→  game_outline\clear!
   818→  game_outline\draw_from game, an.shaders.outline
   819→  game_2_outline\clear!
   820→  game_2_outline\draw_from game_2, an.shaders.outline
   821→
   822→  -- 3. Composite to screen (visual back-to-front order)
   823→  bg\draw!
   824→  shadow\draw 4, 4
   825→  game_outline\draw!
   826→  game\draw!
   827→  game_2_outline\draw!
   828→  game_2\draw!
   829→  ui\draw!

The file E:\a327ex\Anchor\framework\main.yue has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   812→  shadow\clear!
   813→  shadow\draw_from game, an.shaders.shadow
   814→  shadow\draw_from game_2, an.shaders.shadow
   815→
   816→  shader_set_vec2_immediate an.shaders.outline, "u_pixel_size", 1/W, 1/H
   817→  game_outline\clear!
   818→  game_outline\draw_from game, an.shaders.outline
   819→  game_2_outline\clear!
   820→  game_2_outline\draw_from game_2, an.shaders.outline

E:\a327ex\Anchor\framework\main.lua:816:shader_set_vec2(an.shaders.outline, "u_pixel_size", 1 / W, 1 / H)
E:\a327ex\Anchor\framework\anchor\layer.lua:191:layer_apply_shader(self.handle, shader)end, shader_set_float = function(self, shader, name, value)return 
E:\a327ex\Anchor\framework\anchor\layer.lua:205:layer_shader_set_float(self.handle, shader, name, value)end, shader_set_vec2 = function(self, shader, name, x, y)return 
E:\a327ex\Anchor\framework\anchor\layer.lua:219:layer_shader_set_vec2(self.handle, shader, name, x, y)end, shader_set_vec4 = function(self, shader, name, x, y, z, w)return 
E:\a327ex\Anchor\framework\anchor\layer.lua:233:layer_shader_set_vec4(self.handle, shader, name, x, y, z, w)end, shader_set_int = function(self, shader, name, value)return 
E:\a327ex\Anchor\framework\anchor\layer.yue:197:      layer\shader_set_float an.shaders.blur, 'u_radius', 5.0
E:\a327ex\Anchor\framework\anchor\layer.yue:204:  shader_set_float: (shader, name, value) =>
E:\a327ex\Anchor\framework\anchor\layer.yue:211:      layer\shader_set_vec2 an.shaders.outline, 'u_pixel_size', 1/480, 1/270
E:\a327ex\Anchor\framework\anchor\layer.yue:218:  shader_set_vec2: (shader, name, x, y) =>
E:\a327ex\Anchor\framework\anchor\layer.yue:225:      layer\shader_set_vec4 an.shaders.tint, 'u_color', 1.0, 0.5, 0.0, 1.0
E:\a327ex\Anchor\framework\anchor\layer.yue:232:  shader_set_vec4: (shader, name, x, y, z, w) =>
E:\a327ex\Anchor\framework\anchor\layer.yue:239:      layer\shader_set_int an.shaders.effect, 'u_mode', 2
E:\a327ex\Anchor\framework\anchor\layer.yue:246:  shader_set_int: (shader, name, value) =>
E:\a327ex\Anchor\framework\anchor\layer.yue:254:      layer\shader_set_int shader, "u_texture", tex

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

E:\a327ex\Anchor\framework\anchor\object.yue
E:\a327ex\Anchor\framework\anchor\image.yue
E:\a327ex\Anchor\framework\anchor\font.yue
E:\a327ex\Anchor\framework\anchor\collider.yue
E:\a327ex\Anchor\framework\anchor\timer.yue
E:\a327ex\Anchor\framework\anchor\layer.yue
E:\a327ex\Anchor\framework\anchor\camera.yue
E:\a327ex\Anchor\framework\anchor\math.yue
E:\a327ex\Anchor\framework\anchor\spring.yue
E:\a327ex\Anchor\framework\anchor\shake.yue
E:\a327ex\Anchor\framework\anchor\random.yue
E:\a327ex\Anchor\framework\anchor\color.yue
E:\a327ex\Anchor\framework\anchor\array.yue
E:\a327ex\Anchor\framework\anchor\init.yue
E:\a327ex\Anchor\framework\main.yue

1→global *
     2→
     3→--[[
     4→  Anchor framework initialization.
     5→
     6→  This file:
     7→    1. Requires all framework classes (object, layer, image, font)
     8→    2. Creates the root object 'an' with resource registries
     9→    3. Attaches registration methods to 'an'
    10→    4. Defines the global update() function called by the C engine
    11→
    12→  The 'an' object is the root of the object tree and the central access point
    13→  for all framework resources (layers, images, fonts).
    14→]]
    15→
    16→require 'anchor.object'
    17→require 'anchor.layer'
    18→require 'anchor.image'
    19→require 'anchor.font'
    20→require 'anchor.timer'
    21→require 'anchor.math'
    22→require 'anchor.collider'
    23→require 'anchor.spring'
    24→require 'anchor.camera'
    25→require 'anchor.shake'
    26→require 'anchor.random'
    27→require 'anchor.color'
    28→require 'anchor.array'
    29→
    30→--[[
... [1295 more lines]

1→global *
     2→
     3→--[[
     4→  Camera child object for viewport control.
     5→
     6→  Usage:
     7→    an\add camera 480, 270
     8→    an.camera.x = 100
     9→    an.camera.y = 200
    10→    an.camera.zoom = 2
    11→
    12→  Camera is added as a child object, typically to 'an'.
    13→  Layers automatically use an.camera by default (configurable via layer.camera).
    14→
    15→  Camera methods:
    16→    attach       - Apply camera transform to a layer (called automatically)
    17→    detach       - Remove camera transform from a layer (called automatically)
    18→    to_world     - Convert screen coordinates to world coordinates
    19→    to_screen    - Convert world coordinates to screen coordinates
    20→    get_effects  - Collect transform effects from child objects
    21→
    22→  Properties:
    23→    x, y         - Camera center position in world coordinates
    24→    w, h         - Viewport dimensions
    25→    rotation     - Rotation in radians
    26→    zoom         - Zoom level (1 = normal, 2 = 2x magnification)
    27→    mouse        - Table with x, y of mouse in world coordinates
    28→]]
    29→class camera extends object
    30→  --[[
... [233 more lines]

1→global *
     2→
     3→--[[
     4→  Array utilities for the list/array part of Lua tables.
     5→
     6→  All operations that modify the array do so in-place.
     7→  If you need to preserve the original, copy it first using a comprehension:
     8→    copy = [v for v in *original]
     9→
    10→  Note: Functions superseded by YueScript idioms are not included here:
    11→    - map: use [f(v) for v in *t]
    12→    - select/filter: use [v for v in *t when condition]
    13→    - copy: use [v for v in *t]
    14→    - indexes: use [i for i, v in ipairs t when condition]
    15→
    16→  Array functions:
    17→    all                       - check if all elements pass predicate
    18→    any                       - check if any element passes predicate
    19→    average                   - compute average of values
    20→    count                     - count elements or occurrences
    21→    delete                    - remove all instances of value
    22→    flatten                   - flatten nested arrays
    23→    get                       - get element(s) by index with negative support
    24→    get_circular_buffer_index - wrap index for circular buffer
    25→    has                       - check if element exists
    26→    index                     - find first index of element
    27→    join                      - concatenate to string
    28→    max                       - find maximum value
    29→    print                     - debug print array
    30→    random                    - get random element(s)
... [580 more lines]

1→global *
     2→
     3→require 'anchor'
     4→
     5→-- =============================================================================
     6→-- ENGINE STATE TESTS
     7→-- =============================================================================
     8→print "=== ENGINE STATE TESTS ==="
     9→print "Static values (set at init):"
    10→print "  an.width = #{an.width}"
    11→print "  an.height = #{an.height}"
    12→print "  an.dt = #{an.dt}"
    13→print "  an.platform = #{an.platform}"
    14→
    15→-- =============================================================================
    16→-- COLOR TESTS (Phase 1: Basic creation, RGB, packed value)
    17→-- =============================================================================
    18→print "=== COLOR TESTS ==="
    19→
    20→-- Test 1: Creation with defaults
    21→c1 = color!
    22→print "Test 1 - Default color: r=#{c1.r} g=#{c1.g} b=#{c1.b} a=#{c1.a}"
    23→print "  Expected: r=255 g=255 b=255 a=255"
    24→
    25→-- Test 2: Creation with RGB
    26→c2 = color 255, 0, 0
    27→print "Test 2 - Red color: r=#{c2.r} g=#{c2.g} b=#{c2.b} a=#{c2.a}"
    28→print "  Expected: r=255 g=0 b=0 a=255"
    29→
    30→-- Test 3: Creation with RGBA
... [800 more lines]

E:\a327ex\Anchor\framework\anchor\collider.lua:122:physics_add_capsule(self.body, tag, length, radius, opts)end, add_polygon = function(self, tag, vertices, opts)if 
E:\a327ex\Anchor\framework\anchor\collider.lua:134:physics_add_polygon(self.body, tag, vertices, opts)end, get_mass = function(self)return 
E:\a327ex\Anchor\framework\anchor\collider.lua:158:[Omitted long matching line]
E:\a327ex\Anchor\framework\anchor\collider.yue:40:        physics_add_polygon @body, @tag, shape_args[1], opts
E:\a327ex\Anchor\framework\anchor\collider.yue:129:      shape = @collider\add_polygon 'hitbox', verts
E:\a327ex\Anchor\framework\anchor\collider.yue:133:  add_polygon: (tag, vertices, opts={}) =>
E:\a327ex\Anchor\framework\anchor\collider.yue:134:    physics_add_polygon @body, tag, vertices, opts

120→  ]]
   121→  add_capsule: (tag, length, radius, opts={}) =>
   122→    physics_add_capsule @body, tag, length, radius, opts
   123→
   124→  --[[
   125→    Adds an additional polygon shape to this body.
   126→
   127→    Usage:
   128→      verts = {{-16, -16}, {16, -16}, {16, 16}, {-16, 16}}
   129→      shape = @collider\add_polygon 'hitbox', verts
   130→
   131→    Returns: shape handle
   132→  ]]
   133→  add_polygon: (tag, vertices, opts={}) =>
   134→    physics_add_polygon @body, tag, vertices, opts
   135→
   136→  --[[
   137→    Returns the total mass of this body (sum of all shape densities * areas).
   138→  ]]
   139→  get_mass: => physics_get_mass @body
   140→
   141→  --[[
   142→    Returns the body type: 'static', 'kinematic', or 'dynamic'.
   143→  ]]
   144→  get_body_type: => physics_get_body_type @body
   145→
   146→  --[[
   147→    Returns true if the body is awake (actively simulating).
   148→    Bodies sleep when they come to rest to save CPU.
   149→  ]]
... [10 more lines]

1→global *
     2→
     3→--[[
     4→  Collider class - wraps a Box2D physics body.
     5→
     6→  A child object added to game objects. Dies when parent dies.
     7→  Name defaults to 'collider' so parent accesses it as @collider.
     8→
     9→  Usage:
    10→    @\add collider 'player', 'dynamic', 'circle', 16
    11→    @\add collider 'wall', 'static', 'box', 64, 32
    12→
    13→  Multiple colliders on one object:
    14→    hitbox = collider 'player_hitbox', 'dynamic', 'circle', 12
    15→    hitbox.name = 'hitbox'
    16→    @\add hitbox
    17→]]
    18→-- Unique ID counter for colliders
    19→collider_next_id = 1
    20→
    21→class collider extends object
    22→  new: (@tag, @body_type, @shape_type, ...) =>
    23→    super 'collider'
    24→    @body = physics_create_body @body_type, 0, 0
    25→
    26→    -- Add initial shape based on shape_type
    27→    -- Last arg can be opts table (e.g. {sensor: true})
    28→    shape_args = {...}
    29→    opts = {}
    30→    if type(shape_args[#shape_args]) == 'table'
... [20 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

The file E:\a327ex\Anchor\framework\anchor\collider.yue has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   120→  ]]
   121→  add_capsule: (tag, length, radius, opts={}) =>
   122→    physics_add_capsule @body, tag, length, radius, opts
   123→
   124→  --[[
   125→    Adds an additional polygon shape to this body.
   126→
   127→    Usage:
   128→      verts = {-16, -16, 16, -16, 16, 16, -16, 16}
   129→      shape = @collider\add_polygon 'hitbox', verts
   130→
   131→    Vertices are a flat array: {x1, y1, x2, y2, ...}
   132→    Returns: shape handle
   133→  ]]
   134→  add_polygon: (tag, vertices, opts={}) =>
   135→    physics_add_polygon @body, tag, vertices, opts
   136→
   137→  --[[

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

File created successfully at: E:\a327ex\Anchor\docs\FRAMEWORK_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

E:/a327ex/Anchor/docs\ANCHOR_CONTEXT_BRIEF.md
E:/a327ex/Anchor/docs\SESSION_WORKFLOW.md
E:/a327ex/Anchor/docs\PHASE_10_PROGRESS.md
E:/a327ex/Anchor/docs\ENGINE_API.md
E:/a327ex/Anchor/docs\ENGINE_API_QUICK.md
E:/a327ex/Anchor/docs\FRAMEWORK_API_QUICK.md
E:/a327ex/Anchor/docs\FRAMEWORK_API.md

1→# Phase 10 Progress
     2→
     3→This document captures the current state of Phase 10 implementation and decisions made.
     4→
     5→---
     6→
     7→## Project Structure
     8→
     9→We moved away from submodules and symlinks to a simpler copy-based approach.
    10→
    11→### Anchor Repository
    12→
    13→```
    14→Anchor/
    15→├── engine/
    16→│   ├── src/anchor.c
    17→│   ├── build/
    18→│   │   └── anchor.exe
    19→│   ├── build.bat           # Build C code (desktop)
    20→│   ├── build-web.sh        # Build C code (web)
    21→│   └── run.bat             # Run engine with framework/ (no yue compile)
    22→├── framework/              # Framework testing environment
    23→│   ├── anchor/             # Master framework (YueScript source)
    24→│   │   ├── init.yue
    25→│   │   ├── object.yue
    26→│   │   ├── layer.yue
    27→│   │   ├── image.yue
    28→│   │   ├── font.yue
    29→│   │   ├── timer.yue
    30→│   │   ├── collider.yue
... [1465 more lines]

E:\a327ex\Anchor\docs\ENGINE_API_QUICK.md:21:shader_set_float_immediate(shader, name, value)
E:\a327ex\Anchor\docs\ENGINE_API_QUICK.md:22:shader_set_vec2_immediate(shader, name, x, y)
E:\a327ex\Anchor\docs\ENGINE_API_QUICK.md:23:shader_set_vec4_immediate(shader, name, x, y, z, w)
E:\a327ex\Anchor\docs\ENGINE_API_QUICK.md:24:shader_set_int_immediate(shader, name, value)
E:\a327ex\Anchor\docs\ENGINE_API_QUICK.md:77:layer_shader_set_float(layer, shader, name, value)
E:\a327ex\Anchor\docs\ENGINE_API_QUICK.md:78:layer_shader_set_vec2(layer, shader, name, x, y)
E:\a327ex\Anchor\docs\ENGINE_API_QUICK.md:79:layer_shader_set_vec4(layer, shader, name, x, y, z, w)
E:\a327ex\Anchor\docs\ENGINE_API_QUICK.md:80:layer_shader_set_int(layer, shader, name, value)
E:\a327ex\Anchor\docs\ENGINE_API.md:107:layer_shader_set_int(layer, shader, "u_texture", tex)
E:\a327ex\Anchor\docs\ENGINE_API.md:154:### shader_set_float_immediate
E:\a327ex\Anchor\docs\ENGINE_API.md:156:`shader_set_float_immediate(shader, name, value)`
E:\a327ex\Anchor\docs\ENGINE_API.md:161:shader_set_float_immediate(blur_shader, "u_radius", 5.0)
E:\a327ex\Anchor\docs\ENGINE_API.md:164:### shader_set_vec2_immediate
E:\a327ex\Anchor\docs\ENGINE_API.md:166:`shader_set_vec2_immediate(shader, name, x, y)`
E:\a327ex\Anchor\docs\ENGINE_API.md:171:shader_set_vec2_immediate(outline_shader, "u_pixel_size", 1/480, 1/270)
E:\a327ex\Anchor\docs\ENGINE_API.md:174:### shader_set_vec4_immediate
E:\a327ex\Anchor\docs\ENGINE_API.md:176:`shader_set_vec4_immediate(shader, name, x, y, z, w)`
E:\a327ex\Anchor\docs\ENGINE_API.md:181:shader_set_vec4_immediate(tint_shader, "u_color", 1.0, 0.5, 0.0, 1.0)
E:\a327ex\Anchor\docs\ENGINE_API.md:184:### shader_set_int_immediate
E:\a327ex\Anchor\docs\ENGINE_API.md:186:`shader_set_int_immediate(shader, name, value)`
E:\a327ex\Anchor\docs\ENGINE_API.md:191:shader_set_int_immediate(effect_shader, "u_mode", 2)
E:\a327ex\Anchor\docs\ENGINE_API.md:554:### layer_shader_set_float
E:\a327ex\Anchor\docs\ENGINE_API.md:556:`layer_shader_set_float(layer, shader, name, value)`
E:\a327ex\Anchor\docs\ENGINE_API.md:561:layer_shader_set_float(layer, blur_shader, "u_radius", 5.0)
E:\a327ex\Anchor\docs\ENGINE_API.md:564:### layer_shader_set_vec2
E:\a327ex\Anchor\docs\ENGINE_API.md:566:`layer_shader_set_vec2(layer, shader, name, x, y)`
E:\a327ex\Anchor\docs\ENGINE_API.md:571:layer_shader_set_vec2(layer, shader, "u_resolution", 480, 270)
E:\a327ex\Anchor\docs\ENGINE_API.md:574:### layer_shader_set_vec4
E:\a327ex\Anchor\docs\ENGINE_API.md:576:`layer_shader_set_vec4(layer, shader, name, x, y, z, w)`
E:\a327ex\Anchor\docs\ENGINE_API.md:581:layer_shader_set_vec4(layer, shader, "u_color", 1.0, 0.5, 0.0, 1.0)
... [13 more lines]

575→### Shader Uniforms
   576→
   577→For shaders used with `draw_from`, set uniforms immediately before the call:
   578→
   579→```yuescript
   580→shader_set_vec2 an.shaders.outline, "u_pixel_size", 1/W, 1/H
   581→outline\draw_from game, an.shaders.outline
   582→```
   583→
   584→### Example draw() Function
   585→
   586→```yuescript
   587→draw = ->
   588→  -- 1. Render source layers (process queued commands to FBOs)
   589→  bg\render!
   590→  game\render!
   591→  ui\render!
   592→
   593→  -- 2. Create derived layers (copy from game through shaders)
   594→  shadow\clear!
   595→  shadow\draw_from game, an.shaders.shadow
   596→
   597→  outline\clear!
   598→  shader_set_vec2 an.shaders.outline, "u_pixel_size", 1/W, 1/H
   599→  outline\draw_from game, an.shaders.outline
   600→
   601→  -- 3. Composite to screen (visual back-to-front order)
   602→  bg\draw!
   603→  shadow\draw 4, 4
   604→  outline\draw!
... [5 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:
    21→## Read First
    22→
    23→**Source of truth:** `engine/src/anchor.c` — the complete engine implementation (~7000 lines, single file).
    24→
    25→**Engine API:**
    26→- `docs/ENGINE_API_QUICK.md` — compact function signatures, one per line (for quick lookup)
    27→- `docs/ENGINE_API.md` — detailed documentation with examples for every function
    28→
    29→**Framework API:**
    30→- `docs/FRAMEWORK_API_QUICK.md` — compact function signatures for YueScript framework classes
    31→- `docs/FRAMEWORK_API.md` — detailed documentation with examples for framework classes
    32→
    33→**Context:**
    34→- `docs/ANCHOR_CONTEXT_BRIEF.md` — design reasoning, developer working style, how to evaluate features
    35→
    36→**YueScript Framework:**
    37→- `framework/anchor/` — framework classes (object, layer, image, font, etc.)
    38→- `framework/main.yue` — test file for framework development
    39→- `reference/phase-10-implementation-plan.md` — Phase 10 implementation details
    40→
    41→**Archived docs** (superseded by anchor.c, kept for historical reference):
    42→- `reference/archives/ANCHOR_IMPLEMENTATION_PLAN.md` — original phased implementation plan
    43→- `reference/archives/ANCHOR.md` — original engine specification

Found 28 files
docs\FRAMEWORK_API.md
docs\FRAMEWORK_API_QUICK.md
framework\anchor\layer.lua
reference\anchor-review-3-findings.md
docs\ENGINE_API_QUICK.md
docs\ENGINE_API.md
engine\src\anchor.c
website\context\PHASE_10_PROGRESS.md
website\context\ENGINE_API_QUICK.md
website\context\ENGINE_API.md
website\logs\anchor-phase-10-part-11.md
website\logs\anchor-review-2.md
website\logs\anchor-phase-9.md
website\logs\anchor-phase-7.md
website\logs\anchor-phase-8.md
website\logs\anchor-phase-5.md
website\logs\anchor-phase-4.md
website\logs\anchor-phase-10-part-9.md
website\logs\anchor-phase-10-part-7.md
website\logs\anchor-phase-10-part-8.md
website\logs\anchor-phase-10-part-10.md
framework\anchor\layer.yue
reference\analysis\anchor-review-2-analysis.md
reference\archives\ANCHOR_IMPLEMENTATION_PLAN.md
test\main.lua
test\input_tests.lua
reference\archives\ANCHOR.md
reference\analysis\phase-4-effects-analysis.md

E:/a327ex/Anchor/website/context\CLAUDE.md
E:/a327ex/Anchor/website/context\ANCHOR_CONTEXT_BRIEF.md
E:/a327ex/Anchor/website/context\ENGINE_API.md
E:/a327ex/Anchor/website/context\ENGINE_API_QUICK.md
E:/a327ex/Anchor/website/context\PHASE_10_PROGRESS.md
E:/a327ex/Anchor/website/context\SESSION_WORKFLOW.md

1→# Anchor Review 3 - Findings
     2→
     3→Review of `anchor.c` code quality, organization, and documentation accuracy.
     4→
     5→---
     6→
     7→## Code Quality Issues
     8→
     9→### 1. Outdated FILE STRUCTURE Line Numbers
    10→
    11→The header comment at lines 1-18 provides a file structure index with line numbers, but these are likely out of sync with the current file structure. This comment should be updated to reflect current line numbers, or removed if maintenance burden is too high.
    12→
    13→### 2. Leftover "Step N:" Development Comments
    14→
    15→Several functions contain remnant comments from phased development that could be cleaned up:
    16→
    17→- Line 4698: `// Step 7: Body properties - Position/rotation setters`
    18→- Line 4734: `// Step 7: Body properties - Velocity`
    19→- Line 4777: `// Step 7: Body properties - Forces/impulses`
    20→- Line 4848: `// Step 7: Body properties - Damping, gravity scale, fixed rotation, bullet`
    21→- Line 4901: `// Step 7: Body properties - User data`
    22→- Line 4922: `// Step 7: Shape properties - Friction and restitution`
    23→- Line 5050: `// Step 8: Debug function to print event counts`
    24→
    25→These could be:
    26→- Removed entirely (the section banners already organize the file)
    27→- Converted to more descriptive subsection comments
    28→
    29→### 3. Outdated Cross-Reference Line Numbers
    30→
... [126 more lines]

The file E:\a327ex\Anchor\reference\anchor-review-3-findings.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   151→5. **Cross-reference comment** - Removed the outdated line number references.
   152→
   153→6. **Documentation** - Updated both ENGINE_API.md and ENGINE_API_QUICK.md to reflect all changes.
   154→
   155→7. **Build** - Engine compiles successfully.
   156→
   157→---
   158→
   159→## Framework Review (Continuation)
   160→
   161→Reviewed all 14 YueScript framework files for issues and consistency.
   162→
   163→### Issues Found and Fixed
   164→
   165→**1. Polygon vertex format documentation (2 locations)**
   166→- `init.yue` line 853: `query_polygon` example showed nested tables `{{0, 0}, {100, 0}, {50, 100}}`
   167→- `collider.yue` line 128: `add_polygon` example showed nested tables `{{-16, -16}, ...}`
   168→- **Fixed**: Both now show flat arrays `{0, 0, 100, 0, 50, 100}` with note "Vertices are a flat array: {x1, y1, x2, y2, ...}"
   169→
   170→**2. PHASE_10_PROGRESS.md outdated shader function names**
   171→- Lines 580 and 598 used `shader_set_vec2` instead of `shader_set_vec2_immediate`
   172→- **Fixed**: Updated to use `_immediate` suffix
   173→
   174→**3. CLAUDE.md missing framework API references**
   175→- "Read First" section didn't mention the new framework API documentation
   176→- **Fixed**: Added "Framework API" section with links to FRAMEWORK_API.md and FRAMEWORK_API_QUICK.md
   177→
   178→### Documentation Created
   179→
... [39 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

input_tests.lua
main.lua
old_main.lua
shaders/

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:
     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→
... [83 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:
    90→```bash
    91→~/bin/neovim.exe reference/filename.md -- -c "MarkdownPreview"   # Open markdown with preview
    92→```
    93→
    94→---
    95→
    96→## The Engine
    97→
    98→**Anchor** — a game engine written in C with Lua scripting, SDL2, OpenGL, and Box2D. Games are written in YueScript using the framework classes in `framework/anchor/`.

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:
    26→- Human cognition (limited working memory)
    27→- LLM cognition (finite context window)
    28→- Solo developer workflow (must understand own code months later)
    29→
    30→A class definition keeps everything together — properties, behaviors, and relationships are all visible in one place:
    31→
    32→```yuescript
    33→class player extends object
    34→  new: (@x, @y) =>
    35→    super!
    36→    @\tag 'player'
    37→    @\add collider 'player', 'dynamic', 'circle', 16
    38→    @\add timer!
    39→
    40→  update: (dt) =>
    41→    @x += @vx * dt
    42→    game\circle @x, @y, 16, white!
    43→```
    44→
    45→Compare to systems where you define a class in one file, register components elsewhere, wire up behaviors in a third place. Same expressiveness, but the understanding is scattered.
    46→
    47→**When evaluating features:** Does this keep related things together, or scatter them?

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