Anchor Phase 10 Part 5

Summary

This session implemented the YueScript framework layer for drawing and reorganized the Anchor repository folder structure.

Comparing Old vs New Anchor:

Read old LÖVE-based Anchor in reference/love-compare/anchor/layer.lua
Old Anchor: command queue with z-ordering, deferred execution, Lua table allocations per draw
Initially (incorrectly) assessed new C engine as "immediate mode" — no queuing, draws happen immediately

C Engine Architecture Correction:

User corrected the assessment; after reading anchor.c discovered it ALSO uses command queuing
DrawCommand structs (64 bytes each, up to 16384 per layer) stored in pre-allocated C arrays
Commands deferred and processed at frame end via layer_render() with GL batching
Each DrawCommand stores transform[6] matrix copied from layer's transform stack
Key difference from old Anchor: no z-ordering (FIFO order), no GC pressure, flash overlay built-in

API Design:

Explicit registration: an\layer 'game', an\image 'name', 'path', an\font 'name', 'path', size
Drawing only through layer methods, not image methods
Layer receives handles that map to C calls

YueScript Idioms Learned:

Auto-assignment: new: (@name, path, @size) => automatically sets @name and @size
Default values work with auto-assignment: new: (@name='default', @size=16) =>

Drawing Implementation:

Created layer.yue with methods: rectangle, circle, image, text, push/pop, draw
Created image.yue wrapping texture handles with width/height
Created font.yue wrapping font names with text_width, char_width, glyph_metrics
Tested with rotating emoji (512x512 scaled to 0.1), rectangle, circle, text

Run Scripts:

Created framework/run.bat — compile .yue + run desktop
Created framework/run-web.bat — compile .yue + full Emscripten rebuild + run browser
Created engine/run.bat — run engine with framework/ (no yue compile)
Fixed path issues with cd /d "%~dp0" and .\yue.exe
file_packager.py approach for quick web rebuilds doesn't work — requires full Emscripten rebuild

Folder Reorganization:

Renamed game/ → framework/anchor/ (anchor subfolder for require compatibility with games)
Moved assets/, main.yue, yue.exe into framework/
Updated all requires from 'game.xxx' to 'anchor.xxx'
Updated new-game.sh, CLAUDE.md, PHASE_10_PROGRESS.md

Hello, Claude. Let's continue with phase 10. Please read @docs/PHASE_10_PROGRESS.md.

I've reviewed the Phase 10 progress document. Here's where things stand:

Completed

Object system with tree management, tagging, actions (3-phase), horizontal links
Initialization methods (set, build, flow_to)
Short aliases (T, Y, U, E, X, L, A, F, K)
42 tests passing
Full documentation

What's Next (from the doc)

Category	Items	Status
Pure utilities	math (lerp, angle, easing), array, string	Not started
Value objects	color	Not started
Resource manager	sounds, music, images, layers, fonts on `an`	Not started
Child objects	random, input, timer, spring, collider, camera, animation, shake	Not started
External libs	lua-geo2d for collision	Not started

The document suggests starting with pure utilities (math, array, string) since they're stateless and have no dependencies on other framework pieces.

What would you like to tackle first?

Let's get something drawing on the screen. For that, we need images and layers. What's your plan of attack? You need to read the C API to understand what we have implemented.

Let me read the engine API to understand what's available for images and layers.

Read (E:\a327ex\Anchor\docs\ENGINE_API.md)

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 centered at (x, y).
    25→
    26→```lua
    27→layer_rectangle(layer, 100, 100, 50, 30, rgba(255, 0, 0))
    28→```
    29→
    30→### layer_circle
... [1699 more lines]

Now I understand the C API. Here's what we have:

C Engine API (relevant parts)

Textures:

texture_load(path) -> texture — loads image from file
texture_unload(texture) — frees GPU memory
texture_get_width/height(texture) -> int

Layers:

layer_create(name) -> layer — creates/gets named FBO
layer_draw_texture(layer, texture, x, y, color?, flash?) — draws texture
layer_rectangle(layer, x, y, w, h, color) — filled rectangle (centered)
layer_circle(layer, x, y, radius, color) — filled circle
layer_push/pop(layer, x?, y?, r?, sx?, sy?) — transform stack
layer_draw(layer, x?, y?) — queues layer to screen
layer_set_blend_mode(layer, mode) — "alpha" or "additive"

Utility:

rgba(r, g, b, a?) -> color — pack color integer
set_filter_mode("smooth" | "rough") — texture filtering

Plan of Attack

1. Image class — wraps texture handle

Caches width/height on load
Provides draw(layer, x, y, r, sx, sy, color, flash) method
Maybe also draw_centered vs draw_topleft?

2. Layer class — wraps layer handle

rectangle(x, y, w, h, color), circle(x, y, r, color)
draw_image(image, x, y, ...) or just let images draw themselves
push/pop for transforms
draw() to queue to screen

3. Resource manager on an

an.images — table of loaded images by path/name
an.layers — table of layers by name (auto-creates on access?)
Need to decide: explicit registration vs lazy creation

Questions for you:

Image loading: Should an.images.player auto-load "assets/player.png" on first access, or require explicit an\load_image "player", "assets/player.png"?
Layer access: Should an.layers.game auto-create on first access, or require an\add_layer "game"?
Drawing API style: Should drawing go through the layer (layer\draw_image img, x, y) or through the image (img\draw layer, x, y)? Or both?
Transforms: The C API uses layer_push(layer, x, y, r, sx, sy) for combined translate+rotate+scale. Do you want a similar combined method, or separate translate/rotate/scale methods?

Read how layers and images work in @reference/love-compare/anchor. How does it differ from your approach? And where is your approach better vs. the approach used in the old Anchor version?

Glob (reference/love-compare/anchor/*/.lua)

E:\a327ex\Anchor\reference\love-compare\anchor\external\sort.lua
E:\a327ex\Anchor\reference\love-compare\anchor\external\profile.lua
E:\a327ex\Anchor\reference\love-compare\anchor\external\utf8.lua
E:\a327ex\Anchor\reference\love-compare\anchor\external\mlib.lua
E:\a327ex\Anchor\reference\love-compare\anchor\string.lua
E:\a327ex\Anchor\reference\love-compare\anchor\spring.lua
E:\a327ex\Anchor\reference\love-compare\anchor\stats.lua
E:\a327ex\Anchor\reference\love-compare\anchor\shake.lua
E:\a327ex\Anchor\reference\love-compare\anchor\class.lua
E:\a327ex\Anchor\reference\love-compare\anchor\timer.lua
E:\a327ex\Anchor\reference\love-compare\anchor\camera.lua
E:\a327ex\Anchor\reference\love-compare\anchor\music_player.lua
E:\a327ex\Anchor\reference\love-compare\anchor\sound.lua
E:\a327ex\Anchor\reference\love-compare\anchor\random.lua
E:\a327ex\Anchor\reference\love-compare\anchor\collision.lua
E:\a327ex\Anchor\reference\love-compare\anchor\mouse_hover.lua
E:\a327ex\Anchor\reference\love-compare\anchor\grid.lua
E:\a327ex\Anchor\reference\love-compare\anchor\physics_world.lua
E:\a327ex\Anchor\reference\love-compare\anchor\joint.lua
E:\a327ex\Anchor\reference\love-compare\anchor\color.lua
E:\a327ex\Anchor\reference\love-compare\anchor\array.lua
E:\a327ex\Anchor\reference\love-compare\anchor\animation.lua
E:\a327ex\Anchor\reference\love-compare\anchor\input.lua
E:\a327ex\Anchor\reference\love-compare\anchor\tiled_map.lua
E:\a327ex\Anchor\reference\love-compare\anchor\collider.lua
E:\a327ex\Anchor\reference\love-compare\anchor\ui.lua
E:\a327ex\Anchor\reference\love-compare\anchor\layout.lua
E:\a327ex\Anchor\reference\love-compare\anchor\text.lua
E:\a327ex\Anchor\reference\love-compare\anchor\init.lua
E:\a327ex\Anchor\reference\love-compare\anchor\math.lua
... [2 more lines]

Read (E:\a327ex\Anchor\reference\love-compare\anchor\layer.lua)

1→--[[
     2→  Functions that call love.graphics.* functions are stored in this graphics table.
     3→  When commands are queued, they're stored in each layer's .draw_commands table, and then when layer_draw_commands is called, that data is fed to these graphics.* functions to do the actual drawing.
     4→  This is done this way so that I can tell the computer to draw from anywhere in the codebase without having to worry about where or the order in which those calls happen.
     5→]]--
     6→local graphics = {}
     7→
     8→function graphics.arc(x, y, rs, r1, r2, arctype, color, line_width)
     9→  graphics.shape('arc', color, line_width, arctype or 'pie', x, y, rs, r1, r2)
    10→end
    11→
    12→function graphics.circle(x, y, rs, color, line_width)
    13→  graphics.shape('circle', color, line_width, x, y, rs)
    14→end
    15→
    16→function graphics.dashed_circle(x, y, rs, dash_size, gap_size, color, line_width)
    17→  local r, g, b, a = love.graphics.getColor()
    18→  if color then love.graphics.setColor(color.r, color.g, color.b, color.a) end
    19→  if line_width then love.graphics.setLineWidth(line_width) end
    20→
    21→  local r = 0
    22→  local dash_or_gap = 'dash'
    23→  while r <= 2*math.pi do
    24→    if dash_or_gap == 'dash' then
    25→      local x1, y1 = x + rs*math.cos(r), y + rs*math.sin(r)
    26→      r = r + math.asin(dash_size/rs)
    27→      local x2, y2 = x + rs*math.cos(r), y + rs*math.sin(r)
    28→      love.graphics.line(x1, y1, x2, y2)
    29→      dash_or_gap = 'gap'
    30→    elseif dash_or_gap == 'gap' then
... [658 more lines]

Now I understand the old approach. Let me break this down:

Old Anchor Approach (LÖVE-based)

Command Queue Pattern

-- Drawing queues a command (doesn't draw immediately)
layer:circle(x, y, r, color, nil, z)  -- z for depth sorting

-- Stored as: {type='circle', args={x, y, r, color}, z=0}

-- At end of frame:
layer_draw_commands()  -- sorts by z, executes all queued draws

Key Features:

Z-ordering: Every draw call has a z parameter — commands get stable-sorted by z before execution
Deferred execution: Draw from anywhere, order determined at frame end
Multiple canvases per layer: layer:layer_add_canvas('outline') for multi-pass effects
Camera auto-attachment: Camera transform wraps all draw commands
Rich primitives: dashed_line, dashed_circle, gapped_line, arrow, diamond, triangle

Resource Loading:

an:image('player', 'assets/player.png')   -- registers to an.images.player
an:font('main', 'assets/font.ttf', 16)
-- Images are objects with .source, .w, .h

New C Engine Approach

Immediate Mode

layer_rectangle(layer, x, y, w, h, color)  -- draws NOW to layer's FBO
layer_draw(layer)                           -- queues layer to screen

Key Features:

No z-ordering: Draw order = call order
Transform stack: layer_push/pop built-in
Flash parameter: layer_draw_texture(layer, tex, x, y, color, flash) — flash overlay built into C
Raw texture handles: No wrapper object

Trade-offs

Aspect	Old Anchor	New C Engine
Z-ordering	Built-in per-call	None (call order)
Performance	Allocates table per draw	No allocation
Deferred draws	Yes (queue anywhere)	No (immediate)
Multi-canvas	Yes per layer	One FBO per layer
Draw primitives	Many (dashed, arrow, etc.)	Basic (rect, circle, line)
Transform	Manual push/pop	Built-in stack
Complexity	Higher	Lower

Where Old is Better:

Z-ordering is genuinely useful — particles behind player, UI on top, etc.
Deferred drawing lets you draw from update() without worrying about order
Multiple canvases useful for outline/glow effects

Where New is Better:

No GC pressure — no table per draw call
Simpler mental model — draw happens when you say it
Flash built-in — common game effect handled at C level
Transform stack — cleaner than old push/pop pattern

Questions for You:

Z-ordering: Do we want to bring back command queueing? Or require users to structure their code to draw in order (early_action for background, late_action for UI)?
Multiple canvases per layer: Still needed? Or can effects be handled with multiple layers?
Extended primitives: Add dashed_line, arrow, etc. in YueScript framework? Or just skip them until needed?
Image wrapper: Thin class with image\draw layer, x, y or just functions on raw texture handles?

Your assessment of how current Anchor works is incorrect, please read more documents or the source code itself.

Let me read the actual C source code to understand how the engine really works.

Read (E:\a327ex\Anchor\engine\src\anchor.c)

File content (89307 tokens) exceeds maximum allowed tokens (25000). Please use offset and limit parameters to read specific portions of the file, or use the GrepTool to search for specific content.

Grep (layer_draw|layer_create|draw_commands)

1052:static Layer* layer_create(int width, int height) {
1271:static void layer_draw_glyph(Layer* layer, const char* font_name, uint32_t codepoint,
1298:static void layer_draw_text(Layer* layer, const char* text, const char* font_name,
1533:static LayerDrawCommand layer_draw_queue[MAX_LAYER_DRAWS];
1534:static int layer_draw_count = 0;
2728:    if (layer_draw_count >= MAX_LAYER_DRAWS) return;
2729:    layer_draw_queue[layer_draw_count].layer = layer;
2730:    layer_draw_queue[layer_draw_count].x = x;
2731:    layer_draw_queue[layer_draw_count].y = y;
2732:    layer_draw_count++;
3199:    Layer* layer = layer_create(GAME_WIDTH, GAME_HEIGHT);
3225:static int l_layer_create(lua_State* L) {
3414:static int l_layer_draw_text(lua_State* L) {
3421:    layer_draw_text(layer, text, font_name, x, y, color);
3425:static int l_layer_draw_glyph(lua_State* L) {
3435:    layer_draw_glyph(layer, font_name, codepoint, x, y, r, sx, sy, color);
3498:static int l_layer_draw_texture(lua_State* L) {
3613:static int l_layer_draw(lua_State* L) {
5856:    lua_register(L, "layer_create", l_layer_create);
5861:    lua_register(L, "layer_draw_texture", l_layer_draw_texture);
5874:    lua_register(L, "layer_draw_text", l_layer_draw_text);
5875:    lua_register(L, "layer_draw_glyph", l_layer_draw_glyph);
5898:    lua_register(L, "layer_draw", l_layer_draw);
6679:        if (layer_draw_count > 0) {
6680:            // Manual compositing: use layer_draw queue
6681:            for (int i = 0; i < layer_draw_count; i++) {
6682:                LayerDrawCommand* cmd = &layer_draw_queue[i];
6707:            layer_draw_count = 0;

I see there's a layer_draw_queue - so there IS a command queue. Let me read the relevant sections.

Read (E:\a327ex\Anchor\engine\src\anchor.c)

6660→
  6661→        // Calculate centered position with letterboxing
  6662→        int scaled_w = GAME_WIDTH * int_scale;
  6663→        int scaled_h = GAME_HEIGHT * int_scale;
  6664→        int offset_x = (window_w - scaled_w) / 2;
  6665→        int offset_y = (window_h - scaled_h) / 2;
  6666→
  6667→        // Clear screen to black (letterbox color)
  6668→        glViewport(0, 0, window_w, window_h);
  6669→        glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
  6670→        glClear(GL_COLOR_BUFFER_BIT);
  6671→
  6672→        // Set viewport for game area
  6673→        glViewport(offset_x, offset_y, scaled_w, scaled_h);
  6674→        glUseProgram(screen_shader);
  6675→
  6676→        // Get offset uniform location
  6677→        GLint offset_loc = glGetUniformLocation(screen_shader, "u_offset");
  6678→
  6679→        if (layer_draw_count > 0) {
  6680→            // Manual compositing: use layer_draw queue
  6681→            for (int i = 0; i < layer_draw_count; i++) {
  6682→                LayerDrawCommand* cmd = &layer_draw_queue[i];
  6683→                Layer* layer = cmd->layer;
  6684→
  6685→                // Convert game coordinates to NDC offset
  6686→                // Game coords: (0,0) top-left, positive Y down
  6687→                // NDC: (-1,-1) bottom-left, positive Y up
  6688→                // Offset in NDC = (game_offset / game_size) * 2
  6689→                float ndc_x = (cmd->x / GAME_WIDTH) * 2.0f;
... [70 more lines]

Now I see the layer_draw queue is for compositing layers to screen. Let me understand what happens when drawing TO a layer - is it immediate or queued?

Grep (DrawCommand|COMMAND_)

7: * [Lines 1-200]      Includes, constants, core structs (DrawCommand, Layer)
93:#define MAX_COMMAND_CAPACITY 16384
97:    COMMAND_RECTANGLE = 0,
98:    COMMAND_CIRCLE,
99:    COMMAND_SPRITE,
100:    COMMAND_GLYPH,              // Font glyph with custom UVs (uses flash_color for packed UVs)
101:    COMMAND_APPLY_SHADER,       // Post-process layer through a shader
102:    COMMAND_SET_UNIFORM_FLOAT,  // Set float uniform on shader
103:    COMMAND_SET_UNIFORM_VEC2,   // Set vec2 uniform on shader
104:    COMMAND_SET_UNIFORM_VEC4,   // Set vec4 uniform on shader
105:    COMMAND_SET_UNIFORM_INT,    // Set int uniform on shader
114:// DrawCommand — stores one deferred draw call
122:    uint8_t type;           // COMMAND_RECTANGLE, COMMAND_CIRCLE, COMMAND_SPRITE, COMMAND_APPLY_SHADER, COMMAND_SET_UNIFORM_*
150:} DrawCommand;
152:// Verify DrawCommand is exactly 64 bytes (compile-time check)
154:    static_assert(sizeof(DrawCommand) == 64, "DrawCommand must be 64 bytes");
156:    _Static_assert(sizeof(DrawCommand) == 64, "DrawCommand must be 64 bytes");
178:    DrawCommand* commands;
1067:    layer->commands = (DrawCommand*)malloc(MAX_COMMAND_CAPACITY * sizeof(DrawCommand));
1073:    layer->command_capacity = MAX_COMMAND_CAPACITY;
1157:// Copy current transform to a 2x3 array (for DrawCommand)
1166:// Returns NULL if queue is full (MAX_COMMAND_CAPACITY reached)
1167:static DrawCommand* layer_add_command(Layer* layer) {
1180:    DrawCommand* cmd = &layer->commands[layer->command_count++];
1181:    memset(cmd, 0, sizeof(DrawCommand));
1194:    DrawCommand* cmd = layer_add_command(layer);
1196:    cmd->type = COMMAND_RECTANGLE;
1206:    DrawCommand* cmd = layer_add_command(layer);
1208:    cmd->type = COMMAND_CIRCLE;
1218:    DrawCommand* cmd = layer_add_command(layer);
... [22 more lines]

So the C engine DOES queue draw commands per layer! Let me read the command processing code.

Grep (layer_flush|process.*command|command_count)

179:    int command_count;
1072:    layer->command_count = 0;
1147:// Reset effect state for start of frame (call after layer_flush, before new frame)
1168:    if (layer->command_count >= layer->command_capacity) {
1180:    DrawCommand* cmd = &layer->commands[layer->command_count++];
1189:    layer->command_count = 0;
2738:    if (layer->command_count >= MAX_COMMAND_CAPACITY) return;
2740:    DrawCommand* cmd = &layer->commands[layer->command_count++];
2746:// Queue uniform setting commands (deferred - applied when processing commands)
2748:    if (!shader || layer->command_count >= MAX_COMMAND_CAPACITY) return;
2753:    DrawCommand* cmd = &layer->commands[layer->command_count++];
2762:    if (!shader || layer->command_count >= MAX_COMMAND_CAPACITY) return;
2767:    DrawCommand* cmd = &layer->commands[layer->command_count++];
2777:    if (!shader || layer->command_count >= MAX_COMMAND_CAPACITY) return;
2782:    DrawCommand* cmd = &layer->commands[layer->command_count++];
2794:    if (!shader || layer->command_count >= MAX_COMMAND_CAPACITY) return;
2799:    DrawCommand* cmd = &layer->commands[layer->command_count++];
3079:    for (int i = 0; i < layer->command_count; i++) {

Read (E:\a327ex\Anchor\engine\src\anchor.c)

3050→
  3051→    // Add glyph quad with custom UVs
  3052→    batch_add_uv_quad(wx0, wy0, wx1, wy1, wx2, wy2, wx3, wy3,
  3053→                      u0, v0, u1, v1,
  3054→                      r, g, b, a);
  3055→}
  3056→
  3057→// Apply GL blend state based on blend mode
  3058→static void apply_blend_mode(uint8_t mode) {
  3059→    switch (mode) {
  3060→        case BLEND_ALPHA:
  3061→            // Standard alpha blending: result = src * src.a + dst * (1 - src.a)
  3062→            glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
  3063→            break;
  3064→        case BLEND_ADDITIVE:
  3065→            // Additive blending: result = src * src.a + dst (good for glows, particles)
  3066→            glBlendFunc(GL_SRC_ALPHA, GL_ONE);
  3067→            break;
  3068→    }
  3069→}
  3070→
  3071→// Render all commands on a layer
  3072→// Note: Caller must have set up projection matrix and bound initial FBO before calling
  3073→static void layer_render(Layer* layer) {
  3074→    batch_vertex_count = 0;
  3075→    current_batch_texture = 0;
  3076→    uint8_t current_blend = BLEND_ALPHA;  // Start with default
  3077→    apply_blend_mode(current_blend);
  3078→
  3079→    for (int i = 0; i < layer->command_count; i++) {
... [120 more lines]

Now I understand much better. The C engine DOES use command queuing per layer. Let me also check how textures work.

Grep (texture_load|Texture*|texture_registry)

490:static Texture* texture_load(const char* path) {
499:    Texture* tex = (Texture*)malloc(sizeof(Texture));
522:static void texture_destroy(Texture* tex) {
1217:static void layer_add_image(Layer* layer, Texture* tex, float x, float y, uint32_t color, uint32_t flash_color) {
1513:static Texture* texture_registry[MAX_TEXTURES];
3308:static int l_texture_load(lua_State* L) {
3310:    Texture* tex = texture_load(path);
3316:        texture_registry[texture_count++] = tex;
3323:    Texture* tex = (Texture*)lua_touserdata(L, 1);
3327:        if (texture_registry[i] == tex) {
3328:            texture_registry[i] = texture_registry[--texture_count];
3337:    Texture* tex = (Texture*)lua_touserdata(L, 1);
3343:    Texture* tex = (Texture*)lua_touserdata(L, 1);
3500:    Texture* tex = (Texture*)lua_touserdata(L, 2);
5863:    lua_register(L, "texture_load", l_texture_load);
6341:        texture_destroy(texture_registry[i]);
6342:        texture_registry[i] = NULL;

[Showing results with pagination = limit: 40, offset: 0]

Grep (z_sort|sort|z_index|depth)

88:// Transform stack depth
175:    int transform_depth;
1059:    // Initialize transform stack with identity matrix at depth 0
1060:    layer->transform_depth = 0;
1152:// Get pointer to current transform (mat3 at current depth)
1154:    return &layer->transform_stack[layer->transform_depth * 9];
1377:    if (layer->transform_depth >= MAX_TRANSFORM_DEPTH - 1) {
1396:    // Increment depth
1397:    layer->transform_depth++;
1409:    if (layer->transform_depth > 0) {
1410:        layer->transform_depth--;
3297:        return luaL_error(L, "Transform stack overflow (max depth: %d)", MAX_TRANSFORM_DEPTH);

Now I have the full picture. Let me also check if there's anything about when layer_render is called.

Grep (layer_render()

3070-
3071-// Render all commands on a layer
3072-\ Note: Caller must have set up projection matrix and bound initial FBO before calling
3073:static void layer_render(Layer* layer) {
3074-    batch_vertex_count = 0;
3075-    current_batch_texture = 0;
3076-    uint8_t current_blend = BLEND_ALPHA;  // Start with default
--
6640-            }
6641-            glClear(GL_COLOR_BUFFER_BIT);
6642-
6643:            layer_render(layer);
6644-        }
6645-
6646-        \ === PASS 2: Composite all layers to screen ===

Read (E:\a327ex\Anchor\engine\src\anchor.c)

6600→        // Copy current input state to previous for next frame's edge detection
  6601→        input_post_update();
  6602→        chords_post_update();
  6603→    }
  6604→
  6605→    // Render at 60Hz (for chunky pixel movement on high-refresh monitors)
  6606→    if (render_lag >= RENDER_RATE) {
  6607→        render_lag -= RENDER_RATE;
  6608→        frame++;
  6609→
  6610→        // Set up orthographic projection (game coordinates)
  6611→        // Maps (0,0) at top-left to (width, height) at bottom-right
  6612→        float projection[16] = {
  6613→            2.0f / GAME_WIDTH, 0.0f, 0.0f, 0.0f,
  6614→            0.0f, -2.0f / GAME_HEIGHT, 0.0f, 0.0f,
  6615→            0.0f, 0.0f, -1.0f, 0.0f,
  6616→            -1.0f, 1.0f, 0.0f, 1.0f
  6617→        };
  6618→
  6619→        glUseProgram(shader_program);
  6620→        GLint proj_loc = glGetUniformLocation(shader_program, "projection");
  6621→        glUniformMatrix4fv(proj_loc, 1, GL_FALSE, projection);
  6622→
  6623→        // Set AA width based on filter mode (0 = rough/hard edges, 1 = smooth)
  6624→        GLint aa_loc = glGetUniformLocation(shader_program, "u_aa_width");
  6625→        float aa_width = (filter_mode == FILTER_SMOOTH) ? 1.0f : 0.0f;
  6626→        glUniform1f(aa_loc, aa_width);
  6627→
  6628→        // === PASS 1: Render each layer to its FBO ===
  6629→        glBindTexture(GL_TEXTURE_2D, 0);  // Unbind to avoid feedback loop
... [50 more lines]

Grep (an_update|an_draw|lua_getglobal.*\"an)

No matches found

Grep (pcall|lua_call|update.*lua)

6583:                if (lua_pcall(L, 1, 0, err_handler) != LUA_OK) {
6938:    } else if (lua_pcall(L, 0, 0, err_handler) != LUA_OK) {

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

Read (E:\a327ex\Anchor\engine\src\anchor.c)

6570→        if (physics_initialized && physics_enabled) {
  6571→            physics_clear_events();  // Clear event buffers before step
  6572→            b2World_Step(physics_world, (float)PHYSICS_RATE, 4);  // 4 sub-steps recommended
  6573→            physics_process_events();  // Buffer events for Lua queries
  6574→        }
  6575→
  6576→        // Call Lua update (skip if in error state)
  6577→        if (!error_state) {
  6578→            lua_pushcfunction(L, traceback);
  6579→            int err_handler = lua_gettop(L);
  6580→            lua_getglobal(L, "update");
  6581→            if (lua_isfunction(L, -1)) {
  6582→                lua_pushnumber(L, PHYSICS_RATE);
  6583→                if (lua_pcall(L, 1, 0, err_handler) != LUA_OK) {
  6584→                    snprintf(error_message, sizeof(error_message), "%s", lua_tostring(L, -1));
  6585→                    fprintf(stderr, "ERROR: %s\n", error_message);
  6586→                    lua_pop(L, 2);  // error + traceback
  6587→                    error_state = true;
  6588→                } else {
  6589→                    lua_pop(L, 1);  // traceback
  6590→                }
  6591→            } else {
  6592→                lua_pop(L, 2);  // nil + traceback
  6593→            }
  6594→        }
  6595→
  6596→        step++;
  6597→        game_time += PHYSICS_RATE;
  6598→        physics_lag -= PHYSICS_RATE;
  6599→
... [10 more lines]

Now I have the complete picture. Here's my corrected understanding:

Corrected: C Engine Architecture

Command Queue Pattern (Same as Old Anchor!)

// Each Layer has:
DrawCommand* commands;          // Array of 16384 commands
int command_count;

// When you call layer_rectangle(), it adds a command:
DrawCommand* cmd = layer_add_command(layer);
cmd->type = COMMAND_RECTANGLE;
cmd->x = x; cmd->y = y; ...

Frame Loop

Update Phase (144Hz): Lua update(dt) called → game code queues draw commands to layers
Render Phase (60Hz):
- Pass 1: For each layer, layer_render() processes all commands to FBO
- Pass 2: Composite all layers to screen (either auto or via layer_draw queue)
Command Reset: layer->command_count = 0 at frame start (via layer_reset_effects)

Key Similarities to Old Anchor:

Both use command queuing — draws during update, execution at frame end
Both have deferred rendering — draw from anywhere, order determined by call order
Both have layer-based compositing

Key Differences:

Aspect	Old Anchor	New C Engine
Z-ordering	Yes (z param, stable sort)	No (FIFO order)
Multiple canvases/layer	Yes (`layer_add_canvas`)	No (just effect ping-pong)
Command storage	Lua tables (GC'd)	Pre-allocated C arrays (64-byte structs)
Batching	None	Yes (efficient GL batching)
Transform	Per-command in old push/pop	Per-layer stack (mat3 × 32 depth)
Flash overlay	Manual	Built-in parameter
Primitives	Many (dashed, arrow, etc)	Basic (rect, circle, sprite, glyph)

Plan of Attack for Framework

Given this architecture, my plan:

1. Layer wrapper class — thin wrapper with draw methods moonscript layer = an.layers.game layer\rectangle x, y, w, h, color layer\circle x, y, r, color layer\draw_image image, x, y, r, sx, sy, color, flash layer\push x, y, r, sx, sy layer\pop! layer\draw! -- queue to screen

2. Image wrapper class — caches width/height moonscript image = an\load_image "player", "assets/player.png" image.width, image.height -- cached image\draw layer, x, y, r, sx, sy, color, flash

3. No z-ordering at framework level initially — users draw in order via early_action/action/late_action structure. We can add z-ordering later if needed.

Questions:

Do you want an.layers.game to auto-create on first access, or require explicit an\add_layer "game"?
Same for images — auto-load or explicit registration?
Should Image have a draw method, or should drawing only go through Layer?

It should be declared upfront, an\layer 'game'

Same, an\image 'player', 'assets/player.png'

Only through a layer and the layer function receives whatever handle makes most sense, eventually what the C call needs

Clear. So the API:

-- Registration (upfront)
an\layer 'game'
an\image 'player', 'assets/player.png'

-- Access
layer = an.layers.game
image = an.images.player

-- Drawing (through layer only)
layer\rectangle x, y, w, h, color
layer\circle x, y, r, color
layer\image image, x, y, r, sx, sy, color, flash
layer\text "hello", font, x, y, color
layer\push x, y, r, sx, sy
layer\pop!
layer\draw!  -- queue to screen

Let me check the current framework structure to understand where this fits.

Glob (game/*.yue)

E:\a327ex\Anchor\game\init.yue
E:\a327ex\Anchor\game\object.yue

Read (E:\a327ex\Anchor\game\object.yue)

1→global *
     2→
     3→class object
     4→  --[[
     5→    Creates a new object with optional name.
     6→
     7→    Usage:
     8→      obj = object!           -- anonymous object
     9→      obj = object 'player'   -- named object
    10→
    11→    Properties initialized:
    12→      @name     - string or nil, used for bidirectional links
    13→      @parent   - reference to parent object, nil if root
    14→      @children - array of child objects
    15→      @dead     - boolean, true when killed (removed at end of frame)
    16→      @tags     - set of tags, used for querying with all(tag) and is()
    17→  ]]
    18→  new: (name) =>
    19→    @name = name
    20→    @parent = nil
    21→    @children = {}
    22→    @dead = false
    23→    @tags = {}
    24→
    25→  --[[
    26→    Adds a child to this object's tree.
    27→
    28→    Usage:
    29→      @\add child
    30→      @\add(object 'timer')\add(object 'collider')  -- chainable
... [476 more lines]

Let me check how transforms work with texture drawing in the C engine.

Read (E:\a327ex\Anchor\engine\src\anchor.c)

1215→// Record a sprite/image command (centered at x, y)
  1216→// color = multiply/tint color (RGBA), flash_color = additive flash color (RGB, alpha ignored)
  1217→static void layer_add_image(Layer* layer, Texture* tex, float x, float y, uint32_t color, uint32_t flash_color) {
  1218→    DrawCommand* cmd = layer_add_command(layer);
  1219→    if (!cmd) return;
  1220→    cmd->type = COMMAND_SPRITE;
  1221→    cmd->color = color;
  1222→    cmd->flash_color = flash_color;
  1223→    cmd->texture_id = tex->id;
  1224→    cmd->params[0] = x;
  1225→    cmd->params[1] = y;
  1226→    cmd->params[2] = (float)tex->width;
  1227→    cmd->params[3] = (float)tex->height;
  1228→}
  1229→
  1230→// Pack two UV coordinates (0.0-1.0) into a float via bit reinterpretation (16 bits each)
  1231→static float pack_uv_pair(float u, float v) {
  1232→    uint16_t ui = (uint16_t)(u * 65535.0f);
  1233→    uint16_t vi = (uint16_t)(v * 65535.0f);
  1234→    uint32_t packed = ((uint32_t)ui) | ((uint32_t)vi << 16);
  1235→    float result;
  1236→    memcpy(&result, &packed, sizeof(float));
  1237→    return result;
  1238→}
  1239→
  1240→// Unpack two UV coordinates from a float
  1241→static void unpack_uv_pair(float packed_float, float* u, float* v) {
  1242→    uint32_t packed;
  1243→    memcpy(&packed, &packed_float, sizeof(uint32_t));
  1244→    *u = (packed & 0xFFFF) / 65535.0f;
... [30 more lines]

Read (E:\a327ex\Anchor\engine\src\anchor.c)

114→// DrawCommand — stores one deferred draw call
   115→// Explicitly padded to 64 bytes for consistent memory layout across platforms
   116→//
   117→// Coordinate conventions:
   118→//   RECTANGLE: x,y is top-left corner, w,h extend right and down (matches SDL/LÖVE)
   119→//   CIRCLE: x,y is center, radius extends outward
   120→//   SPRITE: x,y is center (texture drawn centered at that point)
   121→typedef struct {
   122→    uint8_t type;           // COMMAND_RECTANGLE, COMMAND_CIRCLE, COMMAND_SPRITE, COMMAND_APPLY_SHADER, COMMAND_SET_UNIFORM_*
   123→    uint8_t blend_mode;     // BLEND_ALPHA, BLEND_ADDITIVE, BLEND_MULTIPLY
   124→    uint8_t _pad[2];        // Padding to align next field to 4 bytes
   125→
   126→    float transform[6];     // 2D affine matrix (2x3): [m00 m01 m02 m10 m11 m12] (24 bytes)
   127→
   128→    union {
   129→        uint32_t color;           // Packed RGBA for multiply/tint (shapes)
   130→        uint32_t uniform_location; // Uniform location (SET_UNIFORM_* commands)
   131→    };
   132→
   133→    // Shape parameters (meaning depends on type)
   134→    // RECTANGLE: params[0]=x, [1]=y, [2]=w, [3]=h
   135→    // CIRCLE: params[0]=x, [1]=y, [2]=radius
   136→    // SPRITE: params[0]=x, [1]=y, [2]=w, [3]=h, [4]=ox, [5]=oy (+ texture_id)
   137→    // GLYPH: params[0]=x, [1]=y, [2]=w, [3]=h, [4]=packed(u0,v0), [5]=packed(u1,v1) (+ texture_id)
   138→    // SET_UNIFORM_FLOAT: params[0]=value
   139→    // SET_UNIFORM_VEC2: params[0]=x, [1]=y
   140→    // SET_UNIFORM_VEC4: params[0]=x, [1]=y, [2]=z, [3]=w
   141→    // SET_UNIFORM_INT: params[0]=value (as float, cast to int)
   142→    float params[6];        // 24 bytes (reduced from 8 to fit 64-byte target)
   143→
... [20 more lines]

Read (E:\a327ex\Anchor\engine\src\anchor.c)

1165→// Add a command to the layer's queue (returns pointer to the new command)
  1166→// Returns NULL if queue is full (MAX_COMMAND_CAPACITY reached)
  1167→static DrawCommand* layer_add_command(Layer* layer) {
  1168→    if (layer->command_count >= layer->command_capacity) {
  1169→        // Fixed size queue - don't grow, just drop the command
  1170→        // This should never happen in normal use (16384 commands per frame is huge)
  1171→        static bool warned = false;
  1172→        if (!warned) {
  1173→            fprintf(stderr, "Error: Command queue full (%d commands). Dropping draw calls.\n",
  1174→                    layer->command_capacity);
  1175→            warned = true;
  1176→        }
  1177→        return NULL;
  1178→    }
  1179→
  1180→    DrawCommand* cmd = &layer->commands[layer->command_count++];
  1181→    memset(cmd, 0, sizeof(DrawCommand));
  1182→    cmd->blend_mode = layer->current_blend;
  1183→    layer_copy_transform(layer, cmd->transform);
  1184→    return cmd;
  1185→}
  1186→
  1187→// Clear all commands (call at frame end after rendering)
  1188→static void layer_clear_commands(Layer* layer) {
  1189→    layer->command_count = 0;
  1190→}
  1191→
  1192→// Record a rectangle command
  1193→static void layer_add_rectangle(Layer* layer, float x, float y, float w, float h, uint32_t color) {
  1194→    DrawCommand* cmd = layer_add_command(layer);
... [5 more lines]

Now I understand. Each DrawCommand stores a copy of the current transform matrix (transform[6]). So transforms work like this:

-- Option 1: No transform (position only)
layer\image img, x, y, color, flash

-- Option 2: With transform
layer\push x, y, r, sx, sy
layer\image img, 0, 0, color, flash  -- transform applied
layer\pop!

This is cleaner than old Anchor where every draw call had r, sx, sy, ox, oy parameters.

Implementation Plan

1. game/layer.yue — Layer class

class layer
  new: (name) =>
    @name = name
    @handle = layer_create name

  rectangle: (x, y, w, h, color) =>
    layer_rectangle @handle, x, y, w, h, color

  circle: (x, y, radius, color) =>
    layer_circle @handle, x, y, radius, color

  image: (img, x, y, color, flash) =>
    layer_draw_texture @handle, img.handle, x, y, color or 0xFFFFFFFF, flash or 0

  text: (text, font_name, x, y, color) =>
    layer_draw_text @handle, text, font_name, x, y, color

  push: (x, y, r, sx, sy) =>
    layer_push @handle, x, y, r, sx, sy

  pop: =>
    layer_pop @handle

  set_blend_mode: (mode) =>
    layer_set_blend_mode @handle, mode

  draw: (x, y) =>
    layer_draw @handle, x or 0, y or 0

2. game/image.yue — Image class (minimal wrapper)

class image
  new: (handle) =>
    @handle = handle
    @width = texture_get_width handle
    @height = texture_get_height handle

3. Updates to game/init.yue — Registration methods

an.layers = {}
an.images = {}

an.layer = (name) =>
  @layers[name] = layer name
  @layers[name]

an.image = (name, path) =>
  handle = texture_load path
  @images[name] = image handle
  @images[name]

Does this look right? Should I proceed with implementation?

Yes, but also let's decide on fonts, since the text function already uses it and it seems related. What's your initial idea there?

Looking at the C API for fonts:

font_load(name, path, size)           -- registers font by name
font_unload(name)
font_get_height(name) -> number
font_get_text_width(name, text) -> number
font_get_char_width(name, codepoint) -> number
font_get_glyph_metrics(name, codepoint) -> {width, height, advance, bearingX, bearingY}
layer_draw_text(layer, text, font_name, x, y, color)
layer_draw_glyph(layer, codepoint, font_name, x, y, r?, sx?, sy?, color)

Key difference from images: fonts are name-based in the C API, not handle-based. You register with a name, then all functions take that name string.

Initial Idea

Registration: moonscript an\font 'main', 'assets/font.ttf', 16

Font class (wraps the name, provides query methods): ```moonscript class font new: (name, path, size) => font_load name, path, size @name = name @size = size @height = font_get_height name

text_width: (text) => font_get_text_width @name, text

char_width: (codepoint) => font_get_char_width @name, codepoint

glyph_metrics: (codepoint) => font_get_glyph_metrics @name, codepoint ```

Usage: ```moonscript an\font 'main', 'assets/font.ttf', 16

font = an.fonts.main font.height -- cached font\text_width "Hello" -- query

layer\text "Hello", font, x, y, color ```

Layer text method accepts font object (extracts name internally): moonscript text: (text, font, x, y, color) => layer_draw_text @handle, text, font.name, x, y, color

Questions

Should layer\text accept both font objects AND raw strings? (flexibility vs consistency) moonscript layer\text "Hi", an.fonts.main, x, y, color -- font object layer\text "Hi", "main", x, y, color -- raw string (skip wrapper)
Do we need layer\glyph for per-character drawing now, or add later when needed?
Should font store @size (the size it was loaded at)? Useful for knowing what you have, but not used by C API.

Sure.

Later.

Sure.

For all functions, there's a YueScript pattern where you can just use new: (@name, path, @size) and it automatically sets @name = name, @size = size. The same applies to default values, so if we had a default name and size we could say (@name='main', path, @size=16). Use these patterns where it makes sense, add this to the YueScript idioms section of CLAUDE.md.

Good to know those patterns. Let me update CLAUDE.md first, then implement.

Read (E:\a327ex\Anchor.claude\CLAUDE.md)

1→# CLAUDE.md
     2→
     3→Guidelines for Claude Code instances working on the Anchor engine.
     4→
     5→---
     6→
     7→## Engine vs Game vs Framework
     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→**Framework** — YueScript framework classes in `Anchor/game/` (object.yue, init.yue, etc.)
    12→
    13→**Engine Mode** — when modifying anchor.c or engine behavior
    14→**Game Mode** — when writing gameplay code in YueScript (from a game's repository)
    15→**Framework Mode** — when editing the YueScript framework classes in `Anchor/game/`
    16→
    17→This is the **Engine** and **Framework** repository. For Game Mode, work from a game's repository (e.g., `emoji-ball-battles/`).
    18→
    19→---
    20→
    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→**Context:**
    30→- `docs/ANCHOR_CONTEXT_BRIEF.md` — design reasoning, developer working style, how to evaluate features
... [128 more lines]

Edit (E:\a327ex\Anchor.claude\CLAUDE.md)

The file E:\a327ex\Anchor\.claude\CLAUDE.md has been updated successfully.

Now let me implement the classes. I'll show you each one for review.

game/layer.yue:

global *

class layer
  new: (@name) =>
    @handle = layer_create @name

  rectangle: (x, y, w, h, color) =>
    layer_rectangle @handle, x, y, w, h, color

  circle: (x, y, radius, color) =>
    layer_circle @handle, x, y, radius, color

  image: (image, x, y, color, flash) =>
    layer_draw_texture @handle, image.handle, x, y, color or 0xFFFFFFFF, flash or 0

  text: (text, font, x, y, color) =>
    font_name = if type(font) == 'string' then font else font.name
    layer_draw_text @handle, text, font_name, x, y, color

  push: (x, y, r, sx, sy) =>
    layer_push @handle, x, y, r, sx, sy

  pop: =>
    layer_pop @handle

  set_blend_mode: (mode) =>
    layer_set_blend_mode @handle, mode

  draw: (x, y) =>
    layer_draw @handle, x or 0, y or 0

game/image.yue:

global *

class image
  new: (@handle) =>
    @width = texture_get_width @handle
    @height = texture_get_height @handle

game/font.yue:

global *

class font
  new: (@name, path, @size) =>
    font_load @name, path, @size
    @height = font_get_height @name

  text_width: (text) =>
    font_get_text_width @name, text

  char_width: (codepoint) =>
    font_get_char_width @name, codepoint

  glyph_metrics: (codepoint) =>
    font_get_glyph_metrics @name, codepoint

Updates to game/init.yue:

global *

require 'game.object'
require 'game.layer'
require 'game.image'
require 'game.font'

an = object 'an'
an.layers = {}
an.images = {}
an.fonts = {}

an.layer = (name) =>
  @layers[name] = layer name
  @layers[name]

an.image = (name, path) =>
  handle = texture_load path
  @images[name] = image handle
  @images[name]

an.font = (name, path, size) =>
  @fonts[name] = font name, path, size
  @fonts[name]

update = (dt) ->
  all_objects = {an}
  all_objects[] = obj for obj in *an\all!
  obj\_early_update dt for obj in *all_objects
  obj\_update dt for obj in *all_objects
  obj\_late_update dt for obj in *all_objects
  an\cleanup!

Does this look right?

Yes.

Write (E:\a327ex\Anchor\game\init.yue)

The file E:\a327ex\Anchor\game\init.yue has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→global *
     2→
     3→require 'game.object'
     4→require 'game.layer'
     5→require 'game.image'
     6→require 'game.font'
     7→
     8→an = object 'an'
     9→an.layers = {}
    10→an.images = {}
    11→an.fonts = {}
    12→
    13→an.layer = (name) =>
    14→  @layers[name] = layer name
    15→  @layers[name]
    16→
    17→an.image = (name, path) =>
    18→  handle = texture_load path
    19→  @images[name] = image handle
    20→  @images[name]
    21→
    22→an.font = (name, path, size) =>
    23→  @fonts[name] = font name, path, size
    24→  @fonts[name]
    25→
    26→update = (dt) ->
    27→  all_objects = {an}
    28→  all_objects[] = obj for obj in *an\all!
    29→  obj\_early_update dt for obj in *all_objects
... [4 more lines]

Created all four files:

game/layer.yue — Layer class with draw methods
game/image.yue — Image wrapper with width/height
game/font.yue — Font wrapper with query methods
game/init.yue — Updated with registration methods

You can now test with something like:

-- in main.yue
require 'game.init'

an\layer 'game'
an\font 'main', 'assets/font.ttf', 16

an\action =>
  game = an.layers.game
  game\rectangle 240, 135, 50, 50, rgba(255, 0, 0, 255)
  game\circle 100, 100, 20, rgba(0, 255, 0, 255)
  game\text "Hello!", an.fonts.main, 200, 50, rgba(255, 255, 255, 255)
  game\draw!

Test with an image also, there's one in the assets folder.

Glob (engine/yue/assets/*)

No files found

Glob (*/assets/.png)

E:\a327ex\Anchor\reference\super emoji box\assets\hit1.png
E:\a327ex\Anchor\reference\super emoji box\assets\blossom.png
E:\a327ex\Anchor\reference\super emoji box\assets\four_leaf_clover.png
E:\a327ex\Anchor\reference\super emoji box\assets\seedling.png
E:\a327ex\Anchor\reference\super emoji box\assets\sheaf.png
E:\a327ex\Anchor\reference\super emoji box\assets\tulip.png
E:\a327ex\Anchor\reference\super emoji box\assets\a.png
E:\a327ex\Anchor\reference\super emoji box\assets\b.png
E:\a327ex\Anchor\reference\super emoji box\assets\c.png
E:\a327ex\Anchor\reference\super emoji box\assets\d.png
E:\a327ex\Anchor\reference\super emoji box\assets\e.png
E:\a327ex\Anchor\reference\super emoji box\assets\f.png
E:\a327ex\Anchor\reference\super emoji box\assets\g.png
E:\a327ex\Anchor\reference\super emoji box\assets\h.png
E:\a327ex\Anchor\reference\super emoji box\assets\i.png
E:\a327ex\Anchor\reference\super emoji box\assets\j.png
E:\a327ex\Anchor\reference\super emoji box\assets\k.png
E:\a327ex\Anchor\reference\super emoji box\assets\l.png
E:\a327ex\Anchor\reference\super emoji box\assets\m.png
E:\a327ex\Anchor\reference\super emoji box\assets\n.png
E:\a327ex\Anchor\reference\super emoji box\assets\o.png
E:\a327ex\Anchor\reference\super emoji box\assets\p.png
E:\a327ex\Anchor\reference\super emoji box\assets\q.png
E:\a327ex\Anchor\reference\super emoji box\assets\r.png
E:\a327ex\Anchor\reference\super emoji box\assets\s.png
E:\a327ex\Anchor\reference\super emoji box\assets\t.png
E:\a327ex\Anchor\reference\super emoji box\assets\u.png
E:\a327ex\Anchor\reference\super emoji box\assets\v.png
E:\a327ex\Anchor\reference\super emoji box\assets\w.png
E:\a327ex\Anchor\reference\super emoji box\assets\x.png
... [18 more lines]

Found them in assets/:

slight_smile.png
star.png
LanaPixel.ttf

Updated test:

-- in main.yue
require 'game.init'

an\layer 'game'
an\font 'main', 'assets/LanaPixel.ttf', 11
an\image 'star', 'assets/star.png'

an\action =>
  game = an.layers.game
  game\rectangle 240, 135, 50, 50, rgba(255, 0, 0, 255)
  game\circle 100, 100, 20, rgba(0, 255, 0, 255)
  game\image an.images.star, 300, 100, rgba(255, 255, 255, 255)
  game\text "Hello!", an.fonts.main, 200, 50, rgba(255, 255, 255, 255)
  game\draw!

Use the slight_smile emoji and have it rotate, remember that it's a 512x512 image, so it has to be scaled down heavily to fit the screen properly

Let me check how layer_push works in the C engine to get the transform right.

Read (E:\a327ex\Anchor\engine\src\anchor.c)

1370→    C[8] = 1.0f;
  1371→}
  1372→
  1373→// Push a transform onto the layer's stack
  1374→// Builds TRS matrix (Translate * Rotate * Scale) and multiplies with current
  1375→// Returns false if stack overflow (caller should error)
  1376→static bool layer_push(Layer* layer, float x, float y, float r, float sx, float sy) {
  1377→    if (layer->transform_depth >= MAX_TRANSFORM_DEPTH - 1) {
  1378→        return false;  // Stack overflow
  1379→    }
  1380→
  1381→    // Build TRS matrix: result of Translate(x,y) * Rotate(r) * Scale(sx,sy)
  1382→    // [sx*cos  -sy*sin  x]
  1383→    // [sx*sin   sy*cos  y]
  1384→    // [   0        0    1]
  1385→    float c = cosf(r);
  1386→    float s = sinf(r);
  1387→    float m[9] = {
  1388→        sx * c, -sy * s, x,
  1389→        sx * s,  sy * c, y,
  1390→        0.0f,    0.0f,   1.0f
  1391→    };
  1392→
  1393→    // Get parent transform
  1394→    float* parent = layer_get_transform(layer);
  1395→
  1396→    // Increment depth
  1397→    layer->transform_depth++;
  1398→
  1399→    // Get new current transform slot
... [30 more lines]

The C engine uses standard TRS (Translate * Rotate * Scale) - so push(x, y, r, sx, sy) means: scale, then rotate, then translate to (x, y). Drawing at (0, 0) after push places the sprite at (x, y).

Test with rotating scaled emoji:

-- in main.yue
require 'game.init'

an\layer 'game'
an\font 'main', 'assets/LanaPixel.ttf', 11
an\image 'smile', 'assets/slight_smile.png'

an.angle = 0

an\action (dt) =>
  @angle += dt * 2
  game = an.layers.game
  game\push 240, 135, @angle, 0.1, 0.1  -- center of screen, rotate, scale to ~51px
  game\image an.images.smile, 0, 0
  game\pop!
  game\text "Hello!", an.fonts.main, 240, 220, rgba(255, 255, 255, 255)
  game\draw!

Yes, let's test it.

Glob (**/main.yue)

E:\a327ex\Anchor\main.yue

Read (E:\a327ex\Anchor\main.yue)

1→global *
     2→
     3→require 'game.init'
     4→
     5→frame = 0
     6→test_num = 0
     7→
     8→log = (msg) ->
     9→  print "  #{msg}"
    10→
    11→test = (name, fn) ->
    12→  test_num += 1
    13→  print "\n=== Test #{test_num}: #{name} ==="
    14→  fn!
    15→
    16→names = (list) ->
    17→  table.concat [obj.name for obj in *list], ', '
    18→
    19→-- Test 1: Complex tree structure
    20→test_complex_tree = ->
    21→  test "Complex tree (4 levels deep)", ->
    22→    an\add object 'a'
    23→    an.a\add object 'b'
    24→    an.a.b\add object 'c'
    25→    an.a.b.c\add object 'd'
    26→    an.a\add object 'e'
    27→    an\add object 'f'
    28→    an.f\add object 'g'
    29→    an.f\add object 'h'
    30→    an.f.h\add object 'i'
... [410 more lines]

Write (E:\a327ex\Anchor\main.yue)

The file E:\a327ex\Anchor\main.yue has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→global *
     2→
     3→require 'game.init'
     4→
     5→an\layer 'game'
     6→an\font 'main', 'assets/LanaPixel.ttf', 11
     7→an\image 'smile', 'assets/slight_smile.png'
     8→
     9→an.angle = 0
    10→
    11→an\action (dt) =>
    12→  @angle += dt * 2
    13→  game = an.layers.game
    14→  game\push 240, 135, @angle, 0.1, 0.1
    15→  game\image an.images.smile, 0, 0
    16→  game\pop!
    17→  game\text "Hello!", an.fonts.main, 240, 220, rgba(255, 255, 255, 255)
    18→  game\draw!
    19→

Ready to test. Run the engine from the Anchor folder and you should see:

A rotating emoji (scaled down to ~51px) in the center
"Hello!" text below it

Can you create a run script that runs it correctly for me?

Glob (*.bat)

E:\a327ex\Anchor\reference\super emoji box\tools\run.bat
E:\a327ex\Anchor\reference\love-compare\tools\run.bat
E:\a327ex\Anchor\engine\run-web.bat
E:\a327ex\Anchor\scripts\build.bat
E:\a327ex\Anchor\engine\build.bat

Write (E:\a327ex\Anchor\run.bat)

File created successfully at: E:\a327ex\Anchor\run.bat

Created run.bat in the root. Run it with:

./run.bat

This script should also compile the .yue files, which you forgot to do now also.

Glob (/yue)

E:\a327ex\Anchor\reference\love-compare\tools\yue.exe
E:\a327ex\Anchor\reference\super emoji box\tools\yue.exe
E:\a327ex\Anchor\reference\examples\snkrx.yue
E:\a327ex\Anchor\reference\examples\swarm_survival.yue
E:\a327ex\Anchor\reference\examples\examples.yue
E:\a327ex\Anchor\reference\examples\dungeon.yue
E:\a327ex\Anchor\website\files\Opus 4.5\snkrx.yue
E:\a327ex\Anchor\website\files\Opus 4.5\dungeon.yue
E:\a327ex\Anchor\website\files\Opus 4.5\swarm_survival.yue
E:\a327ex\Anchor\yue.exe
E:\a327ex\Anchor\game\object.yue
E:\a327ex\Anchor\game\layer.yue
E:\a327ex\Anchor\game\image.yue
E:\a327ex\Anchor\game\font.yue
E:\a327ex\Anchor\game\init.yue
E:\a327ex\Anchor\main.yue

Read (E:\a327ex\Anchor\reference\love-compare\tools\run.bat)

1→cd /D "%~dp0"
     2→call love.exe --console ..
     3→

The way to do this is in your CLAUDE.md, no?

Grep (yue|compile)

9-**Engine** — C code in `engine/src/anchor.c` exposing functions to Lua
10-**Game** — YueScript code using the engine to build games
11:**Framework** — YueScript framework classes in `Anchor/game/` (object.yue, init.yue, etc.)
12-
13-**Engine Mode** — when modifying anchor.c or engine behavior
--
86-## The Engine
87-
88:**Anchor** — a game engine written in C with Lua scripting, SDL2, OpenGL, and Box2D. Games are written in YueScript using the framework classes in `engine/yue/`.
89-
90----
--
154-- Use `for item in *list` for array iteration (values only)
155-- Use `for i, item in ipairs list` for index-value pairs
156:- Use `\method!` for method calls (compiles to `obj:method()`)
157-- Use `@\method!` for self method calls in class methods
158-- Use `@` prefix in constructor parameters for auto-assignment: `new: (@name, @x, @y) =>` automatically sets `@name = name`, etc.

I don't see the compilation command documented there. Let me check for existing .lua files to understand the pattern.

Bash (cd E:/a327ex/Anchor && ./yue.exe --help 2>&1 | head -30)

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.

Read the documents in docs/*, I believe it's in one of them.

Glob (docs/*)

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

Grep (yue)

E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md-19-│   └── build.bat
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md-20-├── game/                   # Master framework (YueScript source)
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md:21:│   ├── init.yue
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md-22-│   ├── init.lua
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md:23:│   ├── object.yue
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md-24-│   └── object.lua
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md:25:├── main.yue                # Test file (runs from Anchor/ root)
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md-26-├── main.lua
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md:27:├── yue.exe                 # YueScript compiler
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md-28-├── assets/                 # Test assets
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md-29-├── docs/
--
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md-42-├── tools/
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md-43-│   ├── anchor.exe          # Copied from Anchor/engine/build/
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md:44:│   └── yue.exe             # YueScript compiler
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md-45-├── anchor/                 # Framework (copied from Anchor/game/ or previous game)
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md:46:│   ├── init.yue
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md-47-│   ├── init.lua
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md:48:│   ├── object.yue
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md-49-│   └── object.lua
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md:50:├── main.yue                # Game code
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md-51-├── main.lua
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md-52-└── assets/
--
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md-66-From Anchor/:
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md-67-```bash
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md:68:./yue.exe -r game/init.yue
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md:69:./yue.exe -r game/object.yue
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md:70:./yue.exe -r main.yue
E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.md-71-```
... [53 more lines]

Found it in PHASE_10_PROGRESS.md:

./yue.exe -r game/init.yue
./yue.exe -r game/object.yue
./yue.exe -r main.yue

Let me update run.bat to compile all .yue files first:

Write (E:\a327ex\Anchor\run.bat)

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:
make the command compile all files in game

Write (E:\a327ex\Anchor\run.bat)

The file E:\a327ex\Anchor\run.bat has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→@echo off
     2→yue.exe -r main.yue
     3→yue.exe -r game/
     4→engine\build\anchor.exe .
     5→

Updated. Now ./run.bat will:

Compile main.yue
Compile all .yue files in game/
Run the engine

I see the emoji, I see hello!, was I supposed to see something else?

The emoji should be rotating. Is it static or spinning?

If it's static, the issue might be with dt or the action. Let me check - try adding a print to verify:

an\action (dt) =>
  @angle += dt * 2
  print @angle  -- see if angle is increasing
  game = an.layers.game
  ...

Or maybe the rotation is just slow (one full rotation every ~3 seconds at dt * 2). Try increasing the speed to make it obvious:

@angle += dt * 5  -- faster rotation

Is it rotating at all?

It is rotating. I was just wondering if you had shapes drawn also, but I see now that you don't. Add them.

Edit (E:\a327ex\Anchor\main.yue)

The file E:\a327ex\Anchor\main.yue has been updated successfully.

Added a red rectangle at (80, 80) and a green circle at (400, 80). Run again to see them.

<local-command-caveat>Caveat: The messages below were generated by the user while running local commands. DO NOT respond to these messages or otherwise consider them in your response unless the user explicitly asks you to.</local-command-caveat>

<command-name>/context</command-name>
            <command-message>context</command-message>
            <command-args></command-args>

<local-command-stdout>[?2026h[?2026l[?2026h[?2026l[?2026h [1mContext Usage[22m
[38;2;136;136;136m⛁ ⛀ [38;2;153;153;153m⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ [39m  [38;2;153;153;153mclaude-opus-4-5-20251101 · 128k/200k tokens (64%)[39m
[38;2;215;119;87m⛁ [38;2;147;51;234m⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ [39m  [38;2;136;136;136m⛁[39m System prompt: [38;2;153;153;153m3.1k tokens (1.6%)[39m
[38;2;147;51;234m⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ [39m  [38;2;153;153;153m⛁[39m System tools: [38;2;153;153;153m16.7k tokens (8.4%)[39m
[38;2;147;51;234m⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ [39m  [38;2;215;119;87m⛁[39m Memory files: [38;2;153;153;153m1.8k tokens (0.9%)[39m
[38;2;147;51;234m⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ [39m  [38;2;147;51;234m⛁[39m Messages: [38;2;153;153;153m106.0k tokens (53.0%)[39m
[38;2;147;51;234m⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ [39m  [38;2;153;153;153m⛶[39m Free space: [38;2;153;153;153m27k (13.7%)[39m
[38;2;147;51;234m⛁ ⛁ ⛁ ⛁ [38;2;153;153;153m⛶ ⛶ ⛶ ⛶ ⛶ ⛶ [39m  [38;2;153;153;153m⛝ Autocompact buffer: 45.0k tokens (22.5%)[39m
[38;2;153;153;153m⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛝ ⛝ ⛝ [39m
[38;2;153;153;153m⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ [39m
[38;2;153;153;153m⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ [39m

[1mMemory files[22m[38;2;153;153;153m · /memory[39m
└ C:\Users\adn\.claude\CLAUDE.md: [38;2;153;153;153m183 tokens[39m
└ .claude\CLAUDE.md: [38;2;153;153;153m1.6k tokens[39m
[?2026l</local-command-stdout>

Perfect, everything works. Let's try making sure this all works on the web too. Please read how this was done for testing the anchor.c + Lua files on the web, I believe the process should be the same, except slightly different? There's a web build script somewhere in the directory.

Glob (/web)

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

Read (E:\a327ex\Anchor\engine\build-web.sh)

1→#!/bin/bash
     2→# Anchor Engine - Web Build (Emscripten)
     3→# Usage: ./build-web.sh <game-folder>
     4→# Example: ./build-web.sh ../test
     5→
     6→cd "$(dirname "$0")"
     7→
     8→# Check for game folder argument
     9→if [ -z "$1" ]; then
    10→    echo "Usage: ./build-web.sh <game-folder>"
    11→    echo "Example: ./build-web.sh ../test"
    12→    exit 1
    13→fi
    14→
    15→GAME_FOLDER="$1"
    16→
    17→if [ ! -d "$GAME_FOLDER" ]; then
    18→    echo "Error: Game folder not found: $GAME_FOLDER"
    19→    exit 1
    20→fi
    21→
    22→if [ ! -f "$GAME_FOLDER/main.lua" ]; then
    23→    echo "Error: main.lua not found in $GAME_FOLDER"
    24→    exit 1
    25→fi
    26→
    27→echo "Building with game folder: $GAME_FOLDER"
    28→
    29→# Create build directory
    30→mkdir -p build-web
... [38 more lines]

The web build process:

Compile .yue to .lua (same as native)
Run build-web.sh from engine/ with game folder as argument — this recompiles the entire engine with Emscripten and bundles assets
Run with emrun or a local server

From the Anchor root, the command would be: bash cd engine && ./build-web.sh ..

This bundles the root folder (main.lua, game/, assets/) into the web build.

Want me to create a run-web.bat in the root that:

Compiles all .yue files
Runs the web build
Launches in browser

We need this one, but also another where we don't recompile the C code, since most of the time we'll be making changes only to .yue files. Can you create both those scripts? Or are two scripts not necessary?

Two scripts make sense:

build-web.bat — Full rebuild (C code + assets). Slow, but needed when C changes.
run-web.bat — Compile .yue, repackage assets only, run. Fast for YueScript iteration.

The trick for the fast one is using Emscripten's file_packager.py to regenerate just the .data file without recompiling C.

Write (E:\a327ex\Anchor\run-web.bat)

File created successfully at: E:\a327ex\Anchor\run-web.bat

Created both scripts:

build-web.bat — Full rebuild (compiles .yue, then C + assets via build-web.sh)
run-web.bat — Quick iteration (compiles .yue, repackages assets with file_packager.py, runs)

Note: The run-web.bat approach with file_packager.py might need adjustment — it depends on how the original build bundled the JS loading code. If it doesn't work, fall back to build-web.bat.

Try build-web.bat first to create the initial build, then run-web.bat for subsequent YueScript changes.

Run run-web.bat to test it.

Bash (cd E:/a327ex/Anchor && ./run-web.bat 2>&1)

Exit code 137
[Request interrupted by user for tool use]
'yue.exe' is not recognized as an internal or external command,
operable program or batch file.
'yue.exe' is not recognized as an internal or external command,
operable program or batch file.
file_packager: warning: Remember to build the main file with `-sFORCE_FILESYSTEM` so that it includes support for loading this file package
Now listening at http://0.0.0.0:6931/
Anchor Engine starting...
Loading: main.lua
WebGL 2.0 (OpenGL ES 3.0) context created
Renderer: WebKit WebGL
Shader program created
Game VAO/VBO created (stride=64 bytes)
Screen shader created
Screen VAO/VBO created
Audio engine initialized
ERROR: main.lua:1: unexpected symbol near '<\199>'
Initialization complete. Press ESC to exit, F11 for fullscreen.
Display refresh rate: 60Hz
Audio context unlocked

Did you catch the error?

Yes - yue.exe wasn't found, so the .yue files weren't compiled. The main.lua has stale/garbage content.

The issue is path resolution. Let me fix the script:

Edit (E:\a327ex\Anchor\run-web.bat)

The file E:\a327ex\Anchor\run-web.bat has been updated successfully.

Edit (E:\a327ex\Anchor\build-web.bat)

The file E:\a327ex\Anchor\build-web.bat has been updated successfully.

Also let me fix run.bat for consistency:

Edit (E:\a327ex\Anchor\run.bat)

The file E:\a327ex\Anchor\run.bat has been updated successfully.

Fixed all three scripts to use cd /d "%~dp0" (changes to script's directory) and .\yue.exe (explicit path). Try again.

Run run-web.bat to test it.

Bash (cd E:/a327ex/Anchor && ./run-web.bat 2>&1)

Exit code 137
[Request interrupted by user for tool use]
Rewritten built main.lua
Rewritten built game/font.lua
Rewritten built game/image.lua
Rewritten built game/init.lua
Rewritten built game/layer.lua
Rewritten built game/object.lua
file_packager: warning: Remember to build the main file with `-sFORCE_FILESYSTEM` so that it includes support for loading this file package
Now listening at http://0.0.0.0:6931/
Anchor Engine starting...
Loading: main.lua
WebGL 2.0 (OpenGL ES 3.0) context created
Renderer: WebKit WebGL
Shader program created
Game VAO/VBO created (stride=64 bytes)
Screen shader created
Screen VAO/VBO created
Audio engine initialized
ERROR: main.lua:1: unexpected symbol near '<\199>'
Initialization complete. Press ESC to exit, F11 for fullscreen.
Display refresh rate: 60Hz

Did you catch the error?

Yes — the .yue files compiled successfully, but the error persists. The problem is that file_packager.py creates a new .data file, but the original anchor.js still has the old file loading code baked in from the initial emcc build. They don't match up.

The quick repackage approach doesn't work cleanly with Emscripten. We need the full rebuild for web.

Let me simplify — just one script that does everything:

Write (E:\a327ex\Anchor\run-web.bat)

The file E:\a327ex\Anchor\run-web.bat has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→@echo off
     2→REM Web build and run - compiles YueScript, rebuilds with Emscripten, launches browser
     3→
     4→cd /d "%~dp0"
     5→
     6→REM Compile YueScript files
     7→.\yue.exe -r main.yue
     8→.\yue.exe -r game/
     9→
    10→REM Build with Emscripten and run
    11→cd engine
    12→call bash -c "./build-web.sh .."
    13→cd build-web
    14→C:\emsdk\upstream\emscripten\emrun.bat --browser chrome anchor.html
    15→cd ..\..
    16→

Now run-web.bat does the full Emscripten rebuild. It's slower but will work correctly. Try it.

Try it.

Bash (cd E:/a327ex/Anchor && ./run-web.bat 2>&1)

Exit code 137
[Request interrupted by user for tool use]
Rewritten built main.lua
Rewritten built game/font.lua
Rewritten built game/image.lua
Rewritten built game/init.lua
Rewritten built game/layer.lua
Rewritten built game/object.lua
Building with game folder: ..
In file included from src/anchor.c:6990:
include\stb_vorbis.c:1404:75: warning: pointer comparison always evaluates to false [-Wtautological-compare]
 1404 |       if (f->stream_start + loc >= f->stream_end || f->stream_start + loc < f->stream_start) {
      |                                                                           ^
1 warning generated.
Build successful: build-web/anchor.html
To test: cd build-web && python -m http.server 8000
Then open: http://localhost:8000/anchor.html
Now listening at http://0.0.0.0:6931/
Anchor Engine starting...
Loading: main.lua
WebGL 2.0 (OpenGL ES 3.0) context created
Renderer: WebKit WebGL
Shader program created
Game VAO/VBO created (stride=64 bytes)
Screen shader created
Screen VAO/VBO created
Audio engine initialized
Created layer: game
Loaded font: main (11.0px, rough) atlas=512x512
Loaded texture: assets/slight_smile.png (512x512)
... [2 more lines]

OK, it all works. We need two scripts. One ONLY for the anchor.c file when we're making changes exclusive to C. That was the script that was there, it should be inside engine/. And then this one that includes the YueScript side too. They should be named appropriately according to the engine, framework ideas.

Got it. Let me organize:

engine/build-web.sh — Already exists, engine-only C build (takes game folder arg)
run-web.bat — Root script for framework testing (compiles .yue + calls engine build + runs)

I'll remove the redundant build-web.bat from root:

Bash (rm E:/a327ex/Anchor/build-web.bat)

Now we have:

engine/build-web.sh — Engine-level: builds C code for web, bundles game folder passed as argument
engine/run-web.bat — Engine-level: runs the web build in browser (already existed)
run-web.bat — Framework-level: compiles .yue + builds web + runs in browser

Clean separation between engine and framework workflows.

And what are the scripts that run only on desktop, for both engine and framework?

Glob (engine/*.bat)

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

Current state:

Level	Desktop	Web
Engine (`engine/`)	`build.bat`	`build-web.sh`, `run-web.bat`
Framework (root)	`run.bat`	`run-web.bat`

Makes sense:

Engine level has build scripts (compile C code)
Framework level has run scripts (compile .yue + run)

Missing: engine/run.bat for desktop — to test engine changes without recompiling .yue. Want me to add it?

<local-command-caveat>Caveat: The messages below were generated by the user while running local commands. DO NOT respond to these messages or otherwise consider them in your response unless the user explicitly asks you to.</local-command-caveat>

<command-name>/context</command-name>
            <command-message>context</command-message>
            <command-args></command-args>

<local-command-stdout>[?2026h[?2026l[?2026h[?2026l[?2026h [1mContext Usage[22m
[38;2;136;136;136m⛁ ⛀ [38;2;153;153;153m⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ [39m  [38;2;153;153;153mclaude-opus-4-5-20251101 · 107k/200k tokens (53%)[39m
[38;2;215;119;87m⛁ [38;2;147;51;234m⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ [39m  [38;2;136;136;136m⛁[39m System prompt: [38;2;153;153;153m3.1k tokens (1.6%)[39m
[38;2;147;51;234m⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ [39m  [38;2;153;153;153m⛁[39m System tools: [38;2;153;153;153m16.7k tokens (8.4%)[39m
[38;2;147;51;234m⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ [39m  [38;2;215;119;87m⛁[39m Memory files: [38;2;153;153;153m1.8k tokens (0.9%)[39m
[38;2;147;51;234m⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ [39m  [38;2;147;51;234m⛁[39m Messages: [38;2;153;153;153m85.4k tokens (42.7%)[39m
[38;2;147;51;234m⛁ ⛁ ⛁ ⛀ [38;2;153;153;153m⛶ ⛶ ⛶ ⛶ ⛶ ⛶ [39m  [38;2;153;153;153m⛶[39m Free space: [38;2;153;153;153m48k (24.0%)[39m
[38;2;153;153;153m⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ [39m  [38;2;153;153;153m⛝ Autocompact buffer: 45.0k tokens (22.5%)[39m
[38;2;153;153;153m⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛶ ⛝ ⛝ ⛝ [39m
[38;2;153;153;153m⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ [39m
[38;2;153;153;153m⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ ⛝ [39m

[1mMemory files[22m[38;2;153;153;153m · /memory[39m
└ C:\Users\adn\.claude\CLAUDE.md: [38;2;153;153;153m183 tokens[39m
└ .claude\CLAUDE.md: [38;2;153;153;153m1.6k tokens[39m
[?2026l</local-command-stdout>

Let's try to organize this folder properly. engine/ contains C code, framework/ should contain the .yue code. How would the scripts look (from a high-level, not the details of how they're written) like this? assets/ would also live in framework/. How would we require from main.yue and so on?

Proposed structure:

Anchor/
├── engine/
│   ├── src/anchor.c
│   ├── include/
│   ├── build/
│   ├── build.bat           # build C (desktop)
│   ├── build-web.sh        # build C (web)
│   └── run-web.bat         # run web build
│
├── framework/
│   ├── anchor/             # framework classes
│   │   ├── init.yue
│   │   ├── object.yue
│   │   ├── layer.yue
│   │   ├── image.yue
│   │   └── font.yue
│   ├── assets/
│   │   ├── LanaPixel.ttf
│   │   └── slight_smile.png
│   ├── main.yue            # test file
│   ├── yue.exe
│   ├── run.bat             # compile .yue + run desktop
│   └── run-web.bat         # compile .yue + build web + run
│
└── scripts/                # utilities (jsonl converter, etc.)

Requires from main.yue: moonscript require 'anchor.init' -- loads anchor/init.lua

Scripts (high-level):

Script	What it does
`engine/build.bat`	Build C → `engine/build/anchor.exe`
`engine/build-web.sh <folder>`	Build C + bundle folder → web
`framework/run.bat`	Compile .yue → run `engine/build/anchor.exe framework/`
`framework/run-web.bat`	Compile .yue → call `engine/build-web.sh ../framework` → run browser

The engine scripts don't know about YueScript. The framework scripts compile .yue then call engine scripts.

Does this structure make sense?

What does emoji-ball-battle's folder structure look like? E:/a327ex/emoji-ball-battles, and how did we decided that would look like for new games? You can see it in the new game script.

Bash (ls -la E:/a327ex/emoji-ball-battles/)

total 55
drwxr-xr-x 1 adn 197121     0 Jan 12 18:40 ./
drwxr-xr-x 1 adn 197121     0 Jan 10 16:36 ../
drwxr-xr-x 1 adn 197121     0 Jan 14 03:06 .claude/
drwxr-xr-x 1 adn 197121     0 Jan 12 18:40 .git/
drwxr-xr-x 1 adn 197121     0 Jan 12 18:18 anchor/
drwxr-xr-x 1 adn 197121     0 Jan 10 17:49 docs/
-rw-r--r-- 1 adn 197121 33228 Jan  4 09:23 EMOJI_BALL_BATTLES_DESIGN.md
-rw-r--r-- 1 adn 197121  1191 Jan 12 18:18 main.lua
-rw-r--r-- 1 adn 197121  1080 Jan 12 18:16 main.yue
drwxr-xr-x 1 adn 197121     0 Jan 10 17:53 reference/
-rw-r--r-- 1 adn 197121    29 Jan 12 18:39 tmpclaude-3c3c-cwd
-rw-r--r-- 1 adn 197121    29 Jan 12 18:40 tmpclaude-6afd-cwd
-rw-r--r-- 1 adn 197121    29 Jan 12 18:40 tmpclaude-ae72-cwd
drwxr-xr-x 1 adn 197121     0 Jan 12 18:39 tools/

The game structure is:

emoji-ball-battles/
├── tools/
│   ├── anchor.exe
│   └── yue.exe
├── anchor/             # framework (copied from Anchor/game/)
│   ├── init.yue
│   └── object.yue
├── main.yue
└── assets/

And main.yue uses: moonscript require 'anchor' -- loads anchor/init.lua

So for consistency, Anchor repo should mirror this:

Anchor/
├── engine/
│   ├── src/anchor.c
│   ├── build/
│   ├── build.bat
│   └── build-web.sh
│
├── anchor/             # rename game/ → anchor/
│   ├── init.yue
│   ├── object.yue
│   ├── layer.yue
│   └── ...
│
├── assets/
│   ├── LanaPixel.ttf
│   └── slight_smile.png
│
├── main.yue
├── yue.exe
├── run.bat
└── run-web.bat

This way:

Anchor repo has same layout as game repos
require 'anchor' works in both
new-game.sh copies Anchor/anchor/ → <game>/anchor/

Should I rename game/ to anchor/ and update the requires?

Let's not mirror. We'll have our own organization for the Anchor folder, and then games do it another way. When copying to a new game (or from a game into framework/), we just change the name of anchor/ to framework/ or vice-versa, does that make sense?

Yes, makes sense:

Anchor repo: framework/ — the master source
Game repos: anchor/ — a copy for that game

Requires:

In Anchor: require 'framework'
In games: require 'anchor'

When copying:

new-game.sh: copies Anchor/framework/ → <game>/anchor/
Pulling changes back: copy <game>/anchor/ → Anchor/framework/

So Anchor structure:

Anchor/
├── engine/
│   ├── src/anchor.c
│   ├── build.bat
│   └── build-web.sh
│
├── framework/
│   ├── init.yue
│   ├── object.yue
│   ├── layer.yue
│   ├── image.yue
│   ├── font.yue
│   ├── assets/
│   ├── main.yue
│   ├── yue.exe
│   ├── run.bat
│   └── run-web.bat
│
└── scripts/

Should I do this reorganization now?

Yes, do this reorganization, create run.bat for engine/, change new-game.sh accordingly, and change all documentation around this too so nothing is out of date.

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Bash (cd E:/a327ex/Anchor && mkdir -p framework && mv game/* framework/ && rmdir game)

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Bash (cd E:/a327ex/Anchor && mv assets/ framework/ && mv main.yue framework/ && mv mai...)

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Read (E:\a327ex\Anchor\framework\init.yue)

1→global *
     2→
     3→require 'game.object'
     4→require 'game.layer'
     5→require 'game.image'
     6→require 'game.font'
     7→
     8→an = object 'an'
     9→an.layers = {}
    10→an.images = {}
    11→an.fonts = {}
    12→
    13→an.layer = (name) =>
    14→  @layers[name] = layer name
    15→  @layers[name]
    16→
    17→an.image = (name, path) =>
    18→  handle = texture_load path
    19→  @images[name] = image handle
    20→  @images[name]
    21→
    22→an.font = (name, path, size) =>
    23→  @fonts[name] = font name, path, size
    24→  @fonts[name]
    25→
    26→update = (dt) ->
    27→  all_objects = {an}
    28→  all_objects[] = obj for obj in *an\all!
    29→  obj\_early_update dt for obj in *all_objects
    30→  obj\_update dt for obj in *all_objects
... [3 more lines]

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Read (E:\a327ex\Anchor\framework\main.yue)

1→global *
     2→
     3→require 'game.init'
     4→
     5→an\layer 'game'
     6→an\font 'main', 'assets/LanaPixel.ttf', 11
     7→an\image 'smile', 'assets/slight_smile.png'
     8→
     9→an.angle = 0
    10→
    11→an\action (dt) =>
    12→  @angle += dt * 2
    13→  game = an.layers.game
    14→  game\rectangle 80, 80, 50, 50, rgba(255, 0, 0, 255)
    15→  game\circle 400, 80, 25, rgba(0, 255, 0, 255)
    16→  game\push 240, 135, @angle, 0.1, 0.1
    17→  game\image an.images.smile, 0, 0
    18→  game\pop!
    19→  game\text "Hello!", an.fonts.main, 240, 220, rgba(255, 255, 255, 255)
    20→  game\draw!
    21→

Wait, I need to reconsider the structure. Currently the .yue files are at the root of framework/, but for require 'framework' to work (like games use require 'anchor'), we need a subfolder:

framework/
├── framework/        # actual framework code
│   ├── init.yue
│   ├── object.yue
│   └── ...
├── assets/
├── main.yue          # requires 'framework'
└── ...

Let me fix this:

Bash (cd E:/a327ex/Anchor/framework && mkdir -p framework && mv init.yue init.lua obje...)

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:
name that subfolder anchor/ then, which will be like in the games.

Bash (cd E:/a327ex/Anchor/framework && mkdir -p anchor && mv init.yue init.lua object....)

Edit (E:\a327ex\Anchor\framework\anchor\init.yue)

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

Read (E:\a327ex\Anchor\framework\anchor\init.yue)

1→global *
     2→
     3→require 'framework.object'
     4→require 'framework.layer'
     5→require 'framework.image'
     6→require 'framework.font'
     7→
     8→an = object 'an'
     9→an.layers = {}
    10→an.images = {}
    11→an.fonts = {}
    12→
    13→an.layer = (name) =>
    14→  @layers[name] = layer name
    15→  @layers[name]
    16→
    17→an.image = (name, path) =>
    18→  handle = texture_load path
    19→  @images[name] = image handle
    20→  @images[name]
    21→
    22→an.font = (name, path, size) =>
    23→  @fonts[name] = font name, path, size
    24→  @fonts[name]
    25→
    26→update = (dt) ->
    27→  all_objects = {an}
    28→  all_objects[] = obj for obj in *an\all!
    29→  obj\_early_update dt for obj in *all_objects
    30→  obj\_update dt for obj in *all_objects
... [3 more lines]

Edit (E:\a327ex\Anchor\framework\anchor\init.yue)

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Edit (E:\a327ex\Anchor\framework\main.yue)

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Read (E:\a327ex\Anchor\framework\run-web.bat)

1→@echo off
     2→REM Web build and run - compiles YueScript, rebuilds with Emscripten, launches browser
     3→
     4→cd /d "%~dp0"
     5→
     6→REM Compile YueScript files
     7→.\yue.exe -r main.yue
     8→.\yue.exe -r game/
     9→
    10→REM Build with Emscripten and run
    11→cd engine
    12→call bash -c "./build-web.sh .."
    13→cd build-web
    14→C:\emsdk\upstream\emscripten\emrun.bat --browser chrome anchor.html
    15→cd ..\..
    16→

Write (E:\a327ex\Anchor\framework\run-web.bat)

The file E:\a327ex\Anchor\framework\run-web.bat has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→@echo off
     2→REM Web build and run - compiles YueScript, rebuilds with Emscripten, launches browser
     3→
     4→cd /d "%~dp0"
     5→
     6→REM Compile YueScript files
     7→.\yue.exe -r main.yue
     8→.\yue.exe -r anchor/
     9→
    10→REM Build with Emscripten and run
    11→cd ..\engine
    12→call bash -c "./build-web.sh ../framework"
    13→cd build-web
    14→C:\emsdk\upstream\emscripten\emrun.bat --browser chrome anchor.html
    15→cd ..\..
    16→

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Read (E:\a327ex\Anchor\scripts\new-game.sh)

1→#!/bin/bash
     2→#
     3→# new-game.sh - Create a new Anchor game project
     4→#
     5→# USAGE:
     6→#   ./scripts/new-game.sh <game-name> [--from <previous-game>]
     7→#
     8→# EXAMPLES:
     9→#   ./scripts/new-game.sh my-awesome-game
    10→#   ./scripts/new-game.sh my-new-game --from emoji-ball-battles
    11→#
    12→# This creates:
    13→#   E:/a327ex/my-awesome-game/
    14→#   ├── tools/
    15→#   │   ├── anchor.exe    (copied from Anchor/engine/build/)
    16→#   │   └── yue.exe       (copied from previous game or downloaded)
    17→#   ├── anchor/           (framework: copied from Anchor/game/ or previous game)
    18→#   │   ├── init.yue
    19→#   │   └── object.yue
    20→#   ├── main.yue          (game entry point template)
    21→#   └── assets/           (empty assets folder)
    22→#
    23→# And a private GitHub repo at: github.com/a327ex/my-awesome-game
    24→#
    25→# ============================================================================
    26→# PREREQUISITES (run these once on a new computer)
    27→# ============================================================================
    28→#
    29→# 1. Git with SSH key configured for GitHub
    30→# 2. GitHub CLI (gh) for creating repos: https://cli.github.com/
... [204 more lines]

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Read (E:\a327ex\Anchor.claude\CLAUDE.md)

1→# CLAUDE.md
     2→
     3→Guidelines for Claude Code instances working on the Anchor engine.
     4→
     5→---
     6→
     7→## Engine vs Game vs Framework
     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→**Framework** — YueScript framework classes in `Anchor/game/` (object.yue, init.yue, etc.)
    12→
    13→**Engine Mode** — when modifying anchor.c or engine behavior
    14→**Game Mode** — when writing gameplay code in YueScript (from a game's repository)
    15→**Framework Mode** — when editing the YueScript framework classes in `Anchor/game/`
    16→
    17→This is the **Engine** and **Framework** repository. For Game Mode, work from a game's repository (e.g., `emoji-ball-battles/`).
    18→
    19→---
    20→
    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→**Context:**
    30→- `docs/ANCHOR_CONTEXT_BRIEF.md` — design reasoning, developer working style, how to evaluate features
... [130 more lines]

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Read (E:\a327ex\Anchor\docs\PHASE_10_PROGRESS.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
    20→├── game/                   # Master framework (YueScript source)
    21→│   ├── init.yue
    22→│   ├── init.lua
    23→│   ├── object.yue
    24→│   └── object.lua
    25→├── main.yue                # Test file (runs from Anchor/ root)
    26→├── main.lua
    27→├── yue.exe                 # YueScript compiler
    28→├── assets/                 # Test assets
    29→├── docs/
    30→├── reference/
... [520 more lines]

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Grep (game/)

No matches found

Grep (Anchor/game)

Found 11 files
website\context\PHASE_10_PROGRESS.md
website\context\CLAUDE.md
website\logs\anchor-phase-10-part-2.md
website\logs\anchor-phase-10-part-1.md
website\logs\anchor-review-2.md
website\logs\2026-01-04_12-15.md
website\logs\2026-01-02_10-00.md
website\logs\2026-01-03_18-20.md
website\logs\2026-01-02_18-59.md
website\logs\2026-01-01_07-37.md
website\logs\2026-01-03_12-30.md

Let me sync the website/context files:

Bash (cp E:/a327ex/Anchor/.claude/CLAUDE.md E:/a327ex/Anchor/docs/* E:/a327ex/Anchor/w...)

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.

Are you done with the edits?

Yes, the reorganization is complete:

✅ Renamed game/ → framework/anchor/ (inside framework/)
✅ Moved assets, main.yue, yue.exe, run scripts into framework/
✅ Updated all requires to use 'anchor'
✅ Created engine/run.bat
✅ Updated new-game.sh
✅ Updated CLAUDE.md
✅ Updated PHASE_10_PROGRESS.md

The website/context files can be synced at session end per the normal workflow.

You should test framework/run.bat to make sure everything works with the new structure.

Please print the folder of all scripts for building and running both engine and framework for both desktop and web.

Bash (echo "=== ENGINE (engine/) ===" && ls -la E:/a327ex/Anchor/engine/*.bat E:/a327e...)

=== ENGINE (engine/) ===
-rw-r--r-- 1 adn 197121 4830 Jan 12 18:19 E:/a327ex/Anchor/engine/build.bat
-rwxr-xr-x 1 adn 197121 1731 Jan  9 23:43 E:/a327ex/Anchor/engine/build-web.sh*
-rw-r--r-- 1 adn 197121  198 Jan 14 18:52 E:/a327ex/Anchor/engine/run.bat
-rw-r--r-- 1 adn 197121  101 Jan  6 13:22 E:/a327ex/Anchor/engine/run-web.bat

=== FRAMEWORK (framework/) ===
-rw-r--r-- 1 adn 197121  96 Jan 14 18:51 E:/a327ex/Anchor/framework/run.bat
-rw-r--r-- 1 adn 197121 365 Jan 14 18:51 E:/a327ex/Anchor/framework/run-web.bat

Engine (engine/): | Script | Platform | Purpose | |--------|----------|---------| | build.bat | Desktop | Build C code → build/anchor.exe | | build-web.sh <folder> | Web | Build C code + bundle game folder | | run.bat | Desktop | Run engine with ../framework (no yue compile) | | run-web.bat | Web | Run existing web build in browser |

Framework (framework/): | Script | Platform | Purpose | |--------|----------|---------| | run.bat | Desktop | Compile .yue + run engine | | run-web.bat | Web | Compile .yue + full web build + run browser |

Paste the full command required to run each, and from which folder

Engine scripts (run from E:/a327ex/Anchor/engine/):

cd E:/a327ex/Anchor/engine

./build.bat                    # Build C code (desktop)
./build-web.sh ../framework    # Build C code + bundle folder (web)
./run.bat                      # Run with ../framework (desktop, no yue compile)
./run-web.bat                  # Run existing web build in browser

Framework scripts (run from E:/a327ex/Anchor/framework/):

cd E:/a327ex/Anchor/framework

./run.bat                      # Compile .yue + run (desktop)
./run-web.bat                  # Compile .yue + full web build + run (web)

%~dp0 in those scripts is the folder it was run from?

No — %~dp0 is the folder where the script is located, not where it was run from.

%0 = the script itself
%~d0 = drive letter of the script
%~p0 = path of the script
%~dp0 = drive + path = script's directory

So cd /d "%~dp0" changes to the script's own directory. This means you can run the script from anywhere:

# These all work the same:
cd E:/a327ex/Anchor/framework && ./run.bat
cd E:/a327ex && ./Anchor/framework/run.bat
cd / && E:/a327ex/Anchor/framework/run.bat

The script will always cd to framework/ first, so paths like .\yue.exe and ..\engine\build\anchor.exe work correctly.

Try running engine/run.bat

Bash (cd E:/a327ex/Anchor/engine && ./run.bat 2>&1)

ERROR: main.lua:3: module 'game.init' not found:
    no field package.preload['game.init']
    no file 'E:\a327ex\Anchor\engine\build\lua\game\init.lua'
    no file 'E:\a327ex\Anchor\engine\build\lua\game\init\init.lua'
    no file 'E:\a327ex\Anchor\engine\build\game\init.lua'
    no file 'E:\a327ex\Anchor\engine\build\game\init\init.lua'
    no file 'E:\a327ex\Anchor\engine\build\..\share\lua\5.4\game\init.lua'
    no file 'E:\a327ex\Anchor\engine\build\..\share\lua\5.4\game\init\init.lua'
    no file '.\game\init.lua'
    no file '.\game\init\init.lua'
    no file 'E:\a327ex\Anchor\engine\build\game\init.dll'
    no file 'E:\a327ex\Anchor\engine\build\..\lib\lua\5.4\game\init.dll'
    no file 'E:\a327ex\Anchor\engine\build\loadall.dll'
    no file '.\game\init.dll'
    no file 'E:\a327ex\Anchor\engine\build\game.dll'
    no file 'E:\a327ex\Anchor\engine\build\..\lib\lua\5.4\game.dll'
    no file 'E:\a327ex\Anchor\engine\build\loadall.dll'
    no file '.\game.dll'
stack traceback:
    [C]: in function 'require'
    main.lua:3: in main chunk
Anchor Engine starting...
Game folder: ..\framework
Loading: main.lua
OpenGL 3.3 loaded
Renderer: NVIDIA GeForce RTX 2060/PCIe/SSE2
Shader program created
Game VAO/VBO created (stride=64 bytes)
Screen shader created
Screen VAO/VBO created
... [4 more lines]

The .lua files are stale — they still have require 'game.init'. Need to recompile the .yue files:

Bash (cd E:/a327ex/Anchor/framework && ./yue.exe -r main.yue && ./yue.exe -r anchor/)

Rewritten built main.lua
Rewritten built anchor/font.lua
Rewritten built anchor/image.lua
Rewritten built anchor/init.lua
Rewritten built anchor/layer.lua
Rewritten built anchor/object.lua

The error happened because:

I edited the .yue files (changed require 'game.init' → require 'anchor')
But didn't compile them to .lua
The stale .lua files still had require 'game.init'
engine/run.bat ran the stale .lua — which tried to load game.init (doesn't exist)

This is expected behavior — engine/run.bat intentionally skips YueScript compilation (it's for testing C changes with existing .lua files). If .lua files are stale, you get errors.

Now that they're compiled, engine/run.bat should work. Want me to try it again?

Ah, you mean why the error message appears before "Anchor Engine starting..."?

That's stdout/stderr buffering. The C engine prints startup messages to stdout, but the Lua error goes to stderr. They get interleaved out of order because:

stderr is typically unbuffered (prints immediately)
stdout is line-buffered or block-buffered (may delay)

So the actual order was:

Engine starts, prints "Anchor Engine starting..." (buffered in stdout)
Loads main.lua, hits error, prints to stderr (immediate)
stdout buffer flushes, showing startup messages after the error

The 2>&1 in my bash command merges both streams, but the ordering is already mixed by the time they reach the shell.

Perfect, it all works. You're going to compact soon, so I'll just compact you and then we'll end the session.

TodoWrite

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

Sounds good. This session we:

Implemented layer, image, font classes — drawing primitives work (tested rotating emoji, shapes, text)
Created run scripts — run.bat and run-web.bat for both desktop and web
Reorganized folder structure:
- engine/ — C code + engine scripts
- framework/ — test environment with anchor/ subfolder (master framework)
Updated all documentation — CLAUDE.md, PHASE_10_PROGRESS.md, new-game.sh

Ready for compaction and session end.

This session is being continued from a previous conversation that ran out of context. The summary below covers the earlier portion of the conversation.

Analysis: Let me chronologically analyze the conversation:

Session Start: User asks to continue with Phase 10, reading PHASE_10_PROGRESS.md

Initial Task - Get Drawing Working: User wants to get something drawing on screen, needs images and layers. I incorrectly assessed the C engine as immediate mode, but user corrected me to read more documentation.

C Engine Analysis: I read anchor.c and discovered:

The C engine DOES use command queuing per layer (DrawCommand structs)

Commands are deferred and processed at frame end via layer_render()

Each DrawCommand stores a transform[6] matrix copied from the current layer transform stack

No z-ordering (FIFO order)

API Design Discussion: User clarified:

an\layer 'game' - explicit declaration

an\image 'player', 'path' - explicit registration

Drawing only through layer, handle passed to C

Font Discussion: Added font class with same pattern

YueScript Idioms: User taught me:

(@name, path, @size) - auto-assignment in constructors

Default values work with auto-assignment

Implementation: Created layer.yue, image.yue, font.yue, updated init.yue

Testing: Created main.yue test with rotating emoji, shapes, text

Run Scripts: Created run.bat, had to fix:

Missing yue compilation

Path issues with cd /d "%~dp0"

Web Testing: Created run-web.bat, discovered file_packager.py approach doesn't work, simplified to full rebuild

Folder Reorganization: Major restructuring:

game/ → framework/anchor/

Moved assets, main.yue, yue.exe, scripts into framework/

Updated all requires from 'game.xxx' to 'anchor.xxx'

Created engine/run.bat

Updated new-game.sh, CLAUDE.md, PHASE_10_PROGRESS.md

Final Testing: Ran engine/run.bat, got error due to stale .lua files, fixed by compiling .yue

Key user feedback: - "Your assessment of how current Anchor works is incorrect" - led to deeper C code analysis - "make the command compile all files in game" - use directory instead of listing files - "name that subfolder anchor/ then" - keep same require path as games - "Let's not mirror" - framework/ has anchor/ inside, different from game structure

Errors encountered: - yue.exe not found - fixed with cd /d "%~dp0" and .\yue.exe - file_packager.py approach for quick web builds doesn't work - simplified to full rebuild - Stale .lua files after reorganization - needed to recompile .yue

Summary: 1. Primary Request and Intent: - Continue Phase 10 development by implementing drawing functionality (layers, images, fonts) - Create run scripts for both desktop and web, for both engine and framework development - Reorganize the Anchor repository folder structure to separate engine/ and framework/ - Update all documentation to reflect new structure

Key Technical Concepts:

C engine uses command queuing per layer (DrawCommand structs, 64 bytes each, up to 16384)

Commands are deferred and processed at frame end via layer_render() with batching

Each DrawCommand stores transform[6] matrix copied from layer's transform stack

No z-ordering (FIFO order) - draw order = call order

layer_push(x, y, r, sx, sy) creates TRS (Translate * Rotate * Scale) matrix

YueScript auto-assignment: new: (@name, @size) => automatically sets instance variables

%~dp0 in batch scripts = script's own directory (not caller's directory)

Web builds require full Emscripten rebuild; file_packager.py alone doesn't work

Files and Code Sections:

framework/anchor/layer.yue (NEW): ```moonscript global *

class layer new: (@name) => @handle = layer_create @name

rectangle: (x, y, w, h, color) => layer_rectangle @handle, x, y, w, h, color

circle: (x, y, radius, color) => layer_circle @handle, x, y, radius, color

image: (image, x, y, color, flash) => layer_draw_texture @handle, image.handle, x, y, color or 0xFFFFFFFF, flash or 0

text: (text, font, x, y, color) => font_name = if type(font) == 'string' then font else font.name layer_draw_text @handle, text, font_name, x, y, color

push: (x, y, r, sx, sy) => layer_push @handle, x, y, r, sx, sy

pop: => layer_pop @handle

set_blend_mode: (mode) => layer_set_blend_mode @handle, mode

draw: (x, y) => layer_draw @handle, x or 0, y or 0 ```

framework/anchor/image.yue (NEW): ```moonscript global *

class image new: (@handle) => @width = texture_get_width @handle @height = texture_get_height @handle ```

framework/anchor/font.yue (NEW): ```moonscript global *

class font new: (@name, path, @size) => font_load @name, path, @size @height = font_get_height @name

text_width: (text) => font_get_text_width @name, text

char_width: (codepoint) => font_get_char_width @name, codepoint

glyph_metrics: (codepoint) => font_get_glyph_metrics @name, codepoint ```

framework/anchor/init.yue (UPDATED): ```moonscript global *

require 'anchor.object' require 'anchor.layer' require 'anchor.image' require 'anchor.font'

an = object 'an' an.layers = {} an.images = {} an.fonts = {}

an.layer = (name) => @layers[name] = layer name @layers[name]

an.image = (name, path) => handle = texture_load path @images[name] = image handle @images[name]

an.font = (name, path, size) => @fonts[name] = font name, path, size @fonts[name]

update = (dt) -> all_objects = {an} all_objects[] = obj for obj in an\all! obj_early_update dt for obj in all_objects obj_update dt for obj in all_objects obj_late_update dt for obj in all_objects an\cleanup! ```

framework/main.yue (UPDATED - test file): ```moonscript global *

require 'anchor'

an\layer 'game' an\font 'main', 'assets/LanaPixel.ttf', 11 an\image 'smile', 'assets/slight_smile.png'

an.angle = 0

an\action (dt) => @angle += dt * 2 game = an.layers.game game\rectangle 80, 80, 50, 50, rgba(255, 0, 0, 255) game\circle 400, 80, 25, rgba(0, 255, 0, 255) game\push 240, 135, @angle, 0.1, 0.1 game\image an.images.smile, 0, 0 game\pop! game\text "Hello!", an.fonts.main, 240, 220, rgba(255, 255, 255, 255) game\draw! ```

framework/run.bat (NEW): batch @echo off cd /d "%~dp0" .\yue.exe -r main.yue .\yue.exe -r anchor/ ..\engine\build\anchor.exe .

framework/run-web.bat (NEW): ```batch @echo off REM Web build and run - compiles YueScript, rebuilds with Emscripten, launches browser

cd /d "%~dp0"

REM Compile YueScript files .\yue.exe -r main.yue .\yue.exe -r anchor/

REM Build with Emscripten and run cd ..\engine call bash -c "./build-web.sh ../framework" cd build-web C:\emsdk\upstream\emscripten\emrun.bat --browser chrome anchor.html cd .... ```

engine/run.bat (NEW): ```batch @echo off REM Run engine with framework/ as game folder (no YueScript compilation) REM Use this for testing engine-only changes with existing .lua files

cd /d "%~dp0" build\anchor.exe ..\framework ```

scripts/new-game.sh (UPDATED): Changed paths from Anchor/game/ to Anchor/framework/anchor/

.claude/CLAUDE.md (UPDATED): Updated paths, added new YueScript idioms about auto-assignment

docs/PHASE_10_PROGRESS.md (UPDATED): Updated folder structure, build commands, what's implemented

Errors and fixes:

yue.exe not found in run-web.bat: Scripts were running from bash with different working directory. Fixed by adding cd /d "%~dp0" and using .\yue.exe

file_packager.py approach for quick web rebuilds: The separately generated .data file doesn't work with the existing anchor.js. Simplified to always do full Emscripten rebuild.

main.lua:3 module 'game.init' not found: After reorganization, .lua files were stale (still had old requires). Fixed by recompiling .yue files with ./yue.exe -r main.yue && ./yue.exe -r anchor/

User feedback on folder naming: When I proposed framework/framework/ subfolder, user said "name that subfolder anchor/ then" - so both Anchor repo and games use require 'anchor'

Problem Solving:

Analyzed C engine architecture by reading anchor.c - discovered command queue system similar to old LÖVE-based Anchor

Designed layer/image/font classes with thin wrappers around C handles

Created dual script system: engine/ for C development, framework/ for YueScript development

Reorganized folder structure maintaining compatibility with game repos (both use require 'anchor')

All user messages:

"Hello, Claude. Let's continue with phase 10. Please read @docs/PHASE_10_PROGRESS.md."

"Let's get something drawing on the screen. For that, we need images and layers. What's your plan of attack? You need to read the C API to understand what we have implemented."

"Read how layers and images work in @reference/love-compare/anchor. How does it differ from your approach? And where is your approach better vs. the approach used in the old Anchor version?"

"Your assessment of how current Anchor works is incorrect, please read more documents or the source code itself."

"1. It should be declared upfront, an\layer 'game' 2. Same, an\image 'player', 'assets/player.png' 3. Only through a layer and the layer function receives whatever handle makes most sense, eventually what the C call needs"

"1. Sure. 2. Later. 3. Sure. For all functions, there's a YueScript pattern where you can just use new: (@name, path, @size)..."

"Yes."

"Use the slight_smile emoji and have it rotate, remember that it's a 512x512 image, so it has to be scaled down heavily to fit the screen properly"

"Yes, let's test it."

"Can you create a run script that runs it correctly for me?"

"This script should also compile the .yue files, which you forgot to do now also."

"Read the documents in docs/*, I believe it's in one of them."

"make the command compile all files in game"

"I see the emoji, I see hello!, was I supposed to see something else?"

"It is rotating. I was just wondering if you had shapes drawn also, but I see now that you don't. Add them."

"Perfect, everything works. Let's try making sure this all works on the web too..."

"Run run-web.bat to test it."

"Did you catch the error?" (twice - about yue.exe not found and main.lua error)

"OK, it all works. We need two scripts..."

"Try it." (for run-web.bat)

"What does emoji-ball-battle's folder structure look like?"

"Let's not mirror. We'll have our own organization for the Anchor folder, and then games do it another way..."

"Yes, do this reorganization, create run.bat for engine/, change new-game.sh accordingly, and change all documentation around this too so nothing is out of date."

"name that subfolder anchor/ then, which will be like in the games."

"Are you done with the edits?"

"Please print the folder of all scripts for building and running both engine and framework for both desktop and web."

"Paste the full command required to run each, and from which folder"

"%~dp0 in those scripts is the folder it was run from?"

"Try running engine/run.bat"

"Why does it error like that?"

"Perfect, it all works. You're going to compact soon, so I'll just compact you and then we'll end the session."

Pending Tasks:

None explicitly pending - session is ending

Current Work: Completed folder reorganization and testing. Final structure:

engine/ - C code with build.bat, build-web.sh, run.bat, run-web.bat

framework/ - Test environment with anchor/ subfolder, run.bat, run-web.bat

All scripts tested and working. User confirmed "Perfect, it all works."

Optional Next Step: Session is ending per user's statement: "Perfect, it all works. You're going to compact soon, so I'll just compact you and then we'll end the session."

No pending tasks - ready for session end workflow (transcript conversion, commit, etc.)

If you need specific details from before compaction (like exact code snippets, error messages, or content you generated), read the full transcript at: C:\Users\adn.claude\projects\E--a327ex-Anchor\92c01151-f397-43c6-9d2f-c818c8007998.jsonl

<local-command-caveat>Caveat: The messages below were generated by the user while running local commands. DO NOT respond to these messages or otherwise consider them in your response unless the user explicitly asks you to.</local-command-caveat>

<command-name>/compact</command-name>
            <command-message>compact</command-message>
            <command-args></command-args>

<local-command-stdout>[2mCompacted (ctrl+o to see full summary)[22m</local-command-stdout>

Alright, let's end the session, title it "Anchor Phase 10 Part 5", read the whole log to create an accurate summary, please.

Bash (ls -t ~/.claude/projects/E--a327ex-Anchor/*.jsonl | grep -v agent | head -1)

/c/Users/adn/.claude/projects/E--a327ex-Anchor/92c01151-f397-43c6-9d2f-c818c8007998.jsonl