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This reverts commit efd31237be.

.claude/animation.md

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+# Animation System
+
+Source: `src/dusk/animation/`
+
+Lightweight keyframe-based value interpolation using fixed-point math throughout.
+
+---
+
+## Easing (`animation/easing.h`)
+
+`easingApply(type, t)` applies an easing function to a normalized time value `t ∈ [0, FIXED_ONE]` and returns the eased value in the same range.
+
+All functions are also callable directly:
+
+```c
+fixed_t t = FIXED(0.5f);
+fixed_t out = easingApply(EASING_IN_OUT_CUBIC, t);
+```
+
+Available easing types (all in `easingtype_t`):
+
+| Enum value | Curve |
+|---|---|
+| `EASING_LINEAR` | straight line |
+| `EASING_IN_SINE` / `OUT` / `IN_OUT` | sinusoidal |
+| `EASING_IN_QUAD` / `OUT` / `IN_OUT` | quadratic |
+| `EASING_IN_CUBIC` / `OUT` / `IN_OUT` | cubic |
+| `EASING_IN_QUART` / `OUT` / `IN_OUT` | quartic |
+| `EASING_IN_BACK` / `OUT` / `IN_OUT` | overshoots slightly |
+
+`EASING_FUNCTIONS[EASING_COUNT]` is a table of `easingfn_t` function pointers for when you need to pick an easing at runtime without a switch.
+
+---
+
+## Keyframes (`animation/keyframe.h`)
+
+```c
+typedef struct {
+  fixed_t time;          // time point this keyframe is at
+  fixed_t value;         // output value at this time
+  easingtype_t easing;   // easing to apply when interpolating toward the NEXT keyframe
+} keyframe_t;
+```
+
+Keyframe arrays should be sorted ascending by `time`.
+
+---
+
+## Animation (`animation/animation.h`)
+
+`animation_t` wraps a keyframe array and provides value lookup:
+
+```c
+keyframe_t frames[] = {
+  { FIXED(0.0f), FIXED(0.0f), EASING_LINEAR },
+  { FIXED(1.0f), FIXED(1.0f), EASING_IN_OUT_CUBIC },
+  { FIXED(2.0f), FIXED(0.0f), EASING_LINEAR },
+};
+
+animation_t anim;
+animationInit(&anim, frames, 3);
+
+fixed_t value = animationGetValue(&anim, FIXED(0.75f));   // interpolated
+```
+
+`animationGetValue` finds the surrounding keyframes for the given `time`, computes the local `t` within that segment, applies the keyframe's easing, and linearly interpolates between the two keyframe values.
+
+The animation does not own the keyframe array — it holds a pointer. Pass a static or long-lived array.
+
+---
+
+## Usage in the engine
+
+Entity animations (`entityanim_t`) do NOT use this system — they use a simple countdown timer (`animTime`) and a state enum. The `animation_t` system is intended for property animation: UI transitions, camera easing, visual effects, anything that needs a time → value curve.

.claude/architecture.md

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+# Architecture
+
+## Platform abstraction
+
+Every subsystem that differs across platforms (display, input, asset loading, save, time, network, log) follows the same pattern:
+
+1. `src/dusk/<subsystem>/<subsystem>platform.h` — included by the public header. Contains `#include "path/to/platform-specific-header.h"` resolved by the build system include path.
+2. `src/dusk{platform}/<subsystem>/<subsystem>platform.h` — the actual platform-specific header included above (e.g. `src/duskgl/display/framebuffer/framebufferplatform.h`).
+3. The shared header (`src/dusk/<subsystem>/<subsystem>.h`) `#error`s at compile time if the platform doesn't define the expected macros/types.
+
+The active platform backends are selected by `DUSK_TARGET_SYSTEM` in CMake, which includes `cmake/targets/<system>.cmake`. That file sets compile definitions (`DUSK_LINUX`, `DUSK_SDL2`, `DUSK_OPENGL`, …) and links platform libraries.
+
+Platform source directories:
+- `src/duskgl/` — OpenGL rendering (used on Linux and as the GL layer for SDL2)
+- `src/dusksdl2/` — SDL2 window/input/time (Linux desktop)
+- `src/dusklinux/` — Linux filesystem/save/network
+- `src/duskdolphin/` — GameCube & Wii (GX renderer, libogc)
+- `src/duskpsp/` — PSP (GU renderer, PSPSDK)
+- `src/duskvita/` — PS Vita
+
+## Subsystem lifecycle
+
+All subsystems follow `init → update (per frame) → dispose`. Engine initialization order matters and is centralized in `engine.c`:
+
+```
+systemInit → timeInit → consoleInit → inputInit → assetInit →
+localeManagerInit → displayInit → uiInit → uiTextboxInit →
+cutsceneInit → rpgInit → networkInit → sceneInit
+```
+
+Dispose runs in reverse. Each call uses `errorChain()` to propagate failures.
+
+## Error handling
+
+Functions that can fail return `errorret_t` (a code + pointer to thread-local error state). Three core macros:
+
+```c
+errorThrow("message %s", arg);        // sets error, returns from current function
+errorChain(someCall());               // if someCall() fails, propagates and returns
+errorOk();                            // returns success
+```
+
+Check with `errorIsOk(ret)` / `errorIsNotOk(ret)`. The error state carries file/function/line info for a stack-like trace.
+
+## Fixed-point math
+
+`fixed_t` is `int32_t` with Q24.8 format (8 fractional bits, ~0.004 resolution). Use it for all world/game values:
+
+```c
+fixed_t x = FIXED(1.5);              // compile-time literal
+fixed_t y = fixedFromI32(3);         // runtime conversion
+fixed_t z = fixedMul(x, y);          // arithmetic
+float_t f = fixedToFloat(z);         // only where float is needed (e.g. GL uniforms)
+```
+
+## Code generation from CSV
+
+Several subsystems define their data in CSV files and have corresponding Python tools that generate C headers at build time (via CMake `add_custom_command`):
+
+| CSV | Tool | Output |
+|-----|------|--------|
+| `src/dusk/input/input.csv` | `tools/input/csv/` | input action enum + names |
+| `src/dusk/display/color.csv` | `tools/color/csv/` | color constants |
+| `src/dusk/rpg/item/item.csv` | `tools/item/csv/` | item enum + metadata |
+| `src/dusk/rpg/story/storyflag.csv` | `tools/story/csv/` | story flag enum + initial values |
+
+Generated headers are written to `build-<target>/generated/` and included via `target_include_directories`.
+
+## Asset system
+
+Assets are packed into `dusk.dsk` (a zip archive) at build time from the `assets/` directory. At runtime `asset.c` opens the archive and serves files from it.
+
+Loading is asynchronous: `assetLock()` registers a load request; the background thread calls the appropriate loader; call `assetRequireLoaded()` to block until ready. `assetUnlock()` / `assetUnlockEntry()` releases the entry so it can be reclaimed.
+
+Loaders are registered per type (`assetloadertype_t`) and live under `src/dusk/asset/loader/`. Platform-specific asset init (finding the .dsk file) is in `src/dusk{platform}/asset/`.
+
+## Display subsystem
+
+The display system is currently organized around immediate GPU-style rendering: `mesh_t` (vertex buffers), `shader_t` (GLSL on GL / TEV state on Dolphin), `texture_t`, and `framebuffer_t`. See [display-refactor.md](display-refactor.md) for the planned move to a render-queue model (needed for a future Saturn port).
+
+The `spritebatch_t` (`display/spritebatch/`) accumulates 2D quads and flushes in batches — the primary 2D drawing primitive used by the RPG layer.

.claude/asset.md

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+# Asset System
+
+Source: `src/dusk/asset/`
+
+All game assets are packed into `dusk.dsk` (a zip archive) at build time and served from it at runtime. The asset system manages async loading, reference counting, and platform-specific archive location.
+
+See [architecture.md](architecture.md#asset-system) for the high-level overview.
+
+---
+
+## Asset archive
+
+The archive is opened at `assetInit()`. `assetFileExists(filename)` checks for a file without loading it. The file path format inside the archive matches the layout of the `assets/` source directory.
+
+On each platform, `assetInitPlatform()` locates the `.dsk` file (e.g. adjacent to the binary on Linux, on the SD card on PSP).
+
+---
+
+## Entry lifecycle
+
+An `assetentry_t` represents one file being managed by the system. States:
+
+```
+NOT_STARTED → PENDING_ASYNC → LOADING_ASYNC → PENDING_SYNC → LOADING_SYNC → LOADED
+                                                                           └→ ERROR
+```
+
+- **PENDING_ASYNC / LOADING_ASYNC**: the background thread is handling I/O (file reads, decompression).
+- **PENDING_SYNC / LOADING_SYNC**: the main thread needs to finish loading (e.g. uploading to GPU), triggered during `assetUpdate()`.
+
+The async/sync split exists because GPU operations must happen on the main thread.
+
+---
+
+## Using assets
+
+```c
+// Acquire a loaded entry (blocks until loaded):
+assetentry_t *entry = assetLock(filename, ASSET_LOADER_TYPE_TEXTURE, &input);
+errorChain(assetRequireLoaded(entry));
+
+// Use the loaded data:
+texture_t *tex = &entry->data.texture.texture;
+
+// Release when done:
+assetUnlockEntry(entry);
+```
+
+`assetLock` finds-or-creates an entry and increments its reference count. `assetUnlock` / `assetUnlockEntry` decrements it; when it reaches zero the entry is reclaimed at the next `assetUpdate()`.
+
+To subscribe to async completion instead of blocking:
+```c
+eventSubscribe(&entry->onLoaded, myCallback, myUser);
+```
+
+---
+
+## Loader types
+
+| Type constant | File | Output struct accessed via |
+|---|---|---|
+| `ASSET_LOADER_TYPE_TEXTURE` | `.png` etc. | `entry->data.texture.texture` |
+| `ASSET_LOADER_TYPE_TILESET` | tileset descriptor | `entry->data.tileset.tileset` |
+| `ASSET_LOADER_TYPE_MESH` | mesh data | `entry->data.mesh.mesh` |
+| `ASSET_LOADER_TYPE_LOCALE` | `.po` file | internal to locale manager |
+| `ASSET_LOADER_TYPE_JSON` | `.json` | `entry->data.json.*` |
+
+Each loader type registers `loadAsync`, `loadSync`, and `dispose` callbacks in `ASSET_LOADER_CALLBACKS[]`.
+
+The async callback runs on the loader thread; the sync callback runs on the main thread during `assetUpdate()`. Most loaders do file I/O async and GPU upload sync.
+
+### Error handling inside loaders
+
+Use these macros instead of `errorThrow` / `errorChain` inside loader callbacks — they also set the entry state to ERROR:
+
+```c
+assetLoaderErrorChain(loading, someCall());
+assetLoaderErrorThrow(loading, "Descriptive message");
+```
+
+---
+
+## Low-level file I/O (`asset/assetfile.h`)
+
+`assetfile_t` wraps a `zip_file_t` handle and provides streaming reads:
+
+```c
+assetFileInit(&file, "textures/player.png", NULL, NULL);
+assetFileOpen(&file);
+assetFileRead(&file, buffer, size);
+assetFileClose(&file);
+assetFileDispose(&file);
+
+// Read entire file into a malloc'd buffer:
+uint8_t *buf; size_t size;
+assetFileReadEntire(&file, &buf, &size);   // caller frees buf
+```
+
+For line-by-line text parsing (`assetfilelinereader_t`):
+```c
+assetFileLineReaderInit(&reader, &file, readBuf, readBufSize, outBuf, outBufSize);
+while(!reader.eof) {
+  errorChain(assetFileLineReaderNext(&reader));
+  // reader.outBuffer contains the line, reader.lineLength its length
+}
+```
+
+---
+
+## Background loader thread
+
+`assetUpdateAsync(thread)` is the thread entry point. It calls `assetUpdate()` in a loop, sleeping briefly between iterations, until `threadShouldStop()` returns true. The main thread also calls `assetUpdate()` once per frame to process the sync phase.
+
+Up to `ASSET_LOADING_COUNT_MAX` (4) entries can be loading concurrently.
+Up to `ASSET_ENTRY_COUNT_MAX` (128) entries can exist at once.

.claude/display-refactor-progress.md

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+# Display Refactor Progress
+
+## Immediate Goal
+Render a 32x32 white square through the new render opcode stack on Linux.
+
+## Architecture (summary)
+See `.claude/display-refactor.md` for the full design.
+
+- `src/dusk/render/` -- opcode format + buffer + submission API (the *contract*).
+- Platform backends (e.g. `src/duskgl/`) consume the buffer and translate to native API calls.
+- `src/dusk/display/` -- orchestration shell only: `displayInit`, `displayUpdate`, `displayDispose`.
+- Scenes call `renderSprite(...)`, `renderClear(...)`. The backend executes the intent.
+
+## Opcode format (32 bytes)
+Every command starts with a 4-byte `ropheader_t` (opcode, flags, depth). Two commands defined:
+- `ROP_CLEAR` (32 bytes) -- clear with a color.
+- `ROP_DRAW_SPRITE` (32 bytes) -- screen-space int16 x/y/w/h + tint color.
+
+## Milestone 1 -- Archive + strip existing display deps ✓
+- [x] Old `src/dusk/display/` archived (now deleted from working tree via git).
+- [x] Old `src/duskgl/display/` removed (new GL renderer replaces it).
+- [x] `engine.c` stripped to minimal subsystems, set to `SCENE_TYPE_TEST`.
+- [x] `scene.c` stripped of old display/shader/screen references.
+- [x] `console.c` stripped of display deps.
+- [x] `ui/CMakeLists.txt` gutted (re-implementation deferred).
+- [x] `asset/loader/CMakeLists.txt` -- display loaders disabled.
+- [x] `asset/loader/assetloader.h` -- display loader types removed.
+- [x] `rpg/overworld/chunk.h` -- mesh_t / meshvertex_t removed.
+- [x] `rpg/overworld/map.c` -- mesh/spritebatch calls removed.
+- [x] `scene/overworld/sceneoverworld.c` -- stubbed to empty callbacks.
+- [x] Test suite display tests disabled.
+
+## Milestone 2 -- Render opcode system ✓
+- [x] `src/dusk/render/rop.h` -- `ropheader_t`, `ropclear_t`, `ropsprite_t`.
+- [x] `src/dusk/render/ropbuffer.h/.c` -- `ROPBUFFER` global, reset, alloc.
+- [x] `src/dusk/render/render.h/.c` -- `renderClear()`, `renderSprite()`.
+- [x] `src/dusk/render/CMakeLists.txt`.
+
+## Milestone 3 -- New minimal display shell ✓
+- [x] `src/dusk/display/display.h/.c` -- init/update/dispose, calls platform hooks.
+- [x] `src/dusk/display/displaystate.h` -- cull/depth/blend flags.
+- [x] `src/dusk/display/color.csv` + `CMakeLists.txt` -- color generation kept.
+
+## Milestone 4 -- GL backend ✓
+- [x] `src/duskgl/render/rendergl.h/.c`:
+  - GL 3.3 core shader (ortho projection, solid color, no texture yet).
+  - `renderGLInit` -- creates VAO/VBO/shader.
+  - `renderGLFlush(buf, w, h)` -- walks ROPBUFFER, GL calls per opcode.
+  - `ROP_CLEAR` → `glClearColor` + `glClear`.
+  - `ROP_DRAW_SPRITE` → 6-vertex quad, `glDrawArrays`.
+- [x] `src/duskgl/error/errorgl.h/.c` -- `errorGLCheck`.
+- [x] `src/duskgl/CMakeLists.txt`.
+- [x] `src/dusksdl2/display/displaysdl2.h/.c` updated:
+  - `displaySDL2Init` -- SDL2 window + GL 3.3 context + `renderGLInit`.
+  - `displaySDL2Flush(ropbuffer_t *)` -- MakeCurrent + `renderGLFlush`.
+  - `displaySDL2Swap` -- SDL_GL_SwapWindow.
+- [x] `src/dusklinux/display/displayplatform.h` updated with new macros.
+
+## Milestone 5 -- Test scene ✓
+- [x] `SCENE_TYPE_TEST` added to `scenetype.h/.c`.
+- [x] `src/dusk/scene/test/scenetest.h/.c`:
+  - `renderClear(color(32, 32, 48, 255))` -- dark blue-grey background.
+  - `renderSprite(100, 100, 32, 32, COLOR_WHITE)` -- 32x32 white square.
+- [x] `engine.c` starts with `SCENE_TYPE_TEST`.
+
+## Milestone 6 -- Verified ✓
+- [x] Build succeeds with no errors (2026-06-18).
+- [x] Engine initializes: SDL window + GL context + shader + test scene.
+- [x] No crashes running for 5+ seconds.
+- [ ] 32x32 white square visually confirmed on screen.
+
+---
+
+## Status: BUILD PASSING -- awaiting visual confirmation
+
+---
+
+## Decisions log
+
+**2026-06-18** -- `color_t = color4b_t` (from generated `display/color.h`). The color generation pipeline (color.csv + Python tool) is kept in the new minimal `src/dusk/display/CMakeLists.txt`.
+
+**2026-06-18** -- `ROP_SIZE = 32`. All opcodes fixed 32 bytes. 3D quads will be 64 bytes when added later.
+
+**2026-06-18** -- Depth sort deferred. Buffer stores unsorted commands; painter platforms sort on flush. GL uses Z-buffer.
+
+**2026-06-18** -- Texture system not yet wired into the opcode pipeline. `ROP_DRAW_SPRITE` with `texture=0` uses solid tint color only (no sampler). Texture handle system comes next.
+
+**2026-06-18** -- GL backend uses GL 3.3 Core profile. Shader takes screen-space pixel coordinates and converts to clip space using window size queried from SDL each frame.
+
+**2026-06-18** -- `ROPBUFFER` is a global (4096 slots × 32 bytes = 128 KB). Reset at start of each frame in `displayUpdate`.
+
+**2026-06-18** -- `ui/`, `rpg/overworld` display code, asset display loaders all temporarily stubbed/disabled. Will be rewritten against the new render API.

.claude/display.md

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+# Display System
+
+Source: `src/dusk/display/`
+
+The display system is the rendering pipeline. It is abstracted across platforms via `displayplatform.h` — see [architecture.md](architecture.md) for the abstraction pattern. The current concrete backends are OpenGL (`src/duskgl/`) and GX/Dolphin (`src/duskdolphin/`).
+
+For the planned render-queue refactor (required for Saturn), see [display-refactor.md](display-refactor.md).
+
+---
+
+## Initialization order
+
+Within the display system, init must follow this order (enforced in `engine.c`):
+
+```
+displayInit → uiInit → uiTextboxInit
+```
+
+Within `displayInit`, the platform typically initialises: framebuffer → screen → shader list → textures → spritebatch → text system.
+
+---
+
+## `display_t` / `displaystate_t`
+
+`display_t DISPLAY` is the global display instance (type alias for `displayplatform_t`).
+
+`displaystate_t` carries per-draw-call render state flags:
+
+```c
+DISPLAY_STATE_FLAG_CULL       // face culling
+DISPLAY_STATE_FLAG_DEPTH_TEST // depth testing
+DISPLAY_STATE_FLAG_BLEND      // alpha blending
+```
+
+Set state before drawing with `displaySetState(state)`.
+
+---
+
+## Screen (`display/screen/`)
+
+`screen_t SCREEN` manages the logical viewport that game content renders into. On dynamic-size platforms (Linux/SDL2) the screen can differ from the native window/framebuffer resolution.
+
+Screen modes:
+```
+SCREEN_MODE_BACKBUFFER           — maps 1:1 to backbuffer
+SCREEN_MODE_FIXED_SIZE           — fixed pixel dimensions
+SCREEN_MODE_ASPECT_RATIO         — fixed aspect, scale to fit
+SCREEN_MODE_FIXED_HEIGHT         — fixed height, width scales
+SCREEN_MODE_FIXED_WIDTH          — fixed width, height scales
+SCREEN_MODE_FIXED_VIEWPORT_HEIGHT — fixed viewport height
+```
+
+The linux target defines `DUSK_DISPLAY_SCREEN_HEIGHT=240`, producing a 240p fixed-height viewport.
+
+Render loop usage:
+```c
+screenBind();       // set up viewport, projection
+// ... draw game content ...
+screenUnbind();
+screenRender();     // blit to backbuffer / current framebuffer
+```
+
+`SCREEN.width` / `SCREEN.height` are the logical dimensions used for world-to-screen math — always prefer these over the framebuffer dimensions.
+
+---
+
+## Framebuffer (`display/framebuffer/`)
+
+`framebuffer_t FRAMEBUFFER_BACKBUFFER` is the platform backbuffer. `FRAMEBUFFER_BOUND` points to the currently-bound framebuffer (or `NULL` for backbuffer).
+
+```c
+frameBufferInitBackBuffer();                        // called once at startup
+frameBufferBind(fb);                                // NULL → backbuffer
+frameBufferClear(FRAMEBUFFER_CLEAR_COLOR | FRAMEBUFFER_CLEAR_DEPTH, COLOR_BLACK);
+frameBufferGetWidth(fb) / frameBufferGetHeight(fb) / frameBufferGetAspect(fb);
+```
+
+On platforms with `DUSK_DISPLAY_SIZE_DYNAMIC`, off-screen framebuffers can be created with `frameBufferInit(fb, w, h)` and disposed with `frameBufferDispose(fb)`. Fixed-resolution platforms (PSP, GameCube) only ever use the backbuffer.
+
+---
+
+## Mesh (`display/mesh/`)
+
+`mesh_t` is a vertex buffer. The type is `meshplatform_t` (e.g. a VAO+VBO on GL, a GX display list on Dolphin).
+
+```c
+meshInit(&mesh, MESH_PRIMITIVE_TYPE_TRIANGLES, vertexCount, verticesPtr);
+meshFlush(&mesh, offset, count);  // upload CPU vertices → GPU
+meshDraw(&mesh, offset, count);   // draw; pass -1 for count to draw all
+meshDispose(&mesh);
+```
+
+**Key distinction**: `meshFlush` uploads data to GPU memory; `meshDraw` issues the draw call. For static geometry (chunk meshes) you call `meshFlush` once on load, then `meshDraw` every frame. For dynamic geometry (spritebatch) you `meshFlush` + `meshDraw` each frame.
+
+`meshvertex_t` (`display/mesh/meshvertex.h`) contains:
+- `float_t uv[2]` — texture coordinates
+- `float_t pos[3]` — position
+- Optionally `color_t color` if `MESH_ENABLE_COLOR` is defined (off by default)
+
+Primitive mesh generators live alongside `mesh.h`: `quad.h`, `plane.h`, `cube.h`, `sphere.h`, `capsule.h`, `triprism.h`.
+
+---
+
+## Shader (`display/shader/`)
+
+`shader_t` is `shaderplatform_t` (GLSL program on GL, TEV state block on Dolphin).
+
+```c
+shaderInit(&shader, &definition);
+shaderBind(&shader);
+shaderSetMatrix(&shader, "uModel", modelMat);
+shaderSetTexture(&shader, "uTexture", &texture);
+shaderSetColor(&shader, "uColor", COLOR_WHITE);
+shaderSetMaterial(&shader, &material);
+shaderDispose(&shader);
+```
+
+### Shader list (`display/shader/shaderlist.h`)
+
+The engine maintains a small set of built-in shaders in `SHADER_LIST_DEFS[]`. Currently only one is defined:
+
+- `SHADER_LIST_SHADER_UNLIT` → `SHADER_UNLIT` — unlit textured/colored rendering, used for all world and entity drawing.
+
+`shaderListInit()` compiles/uploads all built-in shaders and sets shared projection/view matrices. Call once after display init.
+
+### Materials (`display/shader/shadermaterial.h`)
+
+`shadermaterial_t` is a union of all shader-specific material structs. Currently only `shaderunlitmaterial_t`:
+
+```c
+shadermaterial_t mat = {
+  .unlit = {
+    .color = COLOR_WHITE,
+    .texture = &myTexture,   // NULL for solid color
+  }
+};
+shaderSetMaterial(&SHADER_UNLIT, &mat);
+```
+
+---
+
+## Texture (`display/texture/`)
+
+```c
+textureInit(&texture, width, height, format, data);
+textureDispose(&texture);
+```
+
+Width and height **must be powers of two** (asserted at init time).
+
+`textureformat_t` is `textureformatplatform_t`. Supported formats vary by platform; the common ones are `TEXTURE_FORMAT_RGBA` and `TEXTURE_FORMAT_PALETTE`.
+
+`texturedata_t` is a union:
+```c
+// RGBA:
+data.rgbaColors = colorArray;
+
+// Paletted:
+data.paletted.indices = indexArray;
+data.paletted.palette = &palette;   // palette color count must be power of two
+```
+
+**Built-in textures** (defined in `texture.c`, no asset loading needed):
+- `TEXTURE_WHITE` — 4×4 solid white
+- `TEXTURE_TEST` — 4×4 black/magenta checkerboard
+
+### Palette (`display/texture/palette.h`)
+
+Up to `PALETTE_COUNT` (6) global palettes in `PALETTES[]`, each holding up to `PALETTE_COLOR_COUNT` (255) `color_t` entries.
+
+### Tileset (`display/texture/tileset.h`)
+
+A tileset slices a texture into a grid of equal-sized tiles. Used by fonts and UI frames. The tileset does not own the texture — it references a `texture_t *`.
+
+---
+
+## SpriteBatch (`display/spritebatch/`)
+
+The primary 2D/billboard drawing primitive. Accumulates `spritebatchsprite_t` quads and flushes them in batches of `SPRITEBATCH_FLUSH_COUNT` (16) sprites at a time.
+
+```c
+// Per frame:
+spriteBatchClear();
+spriteBatchBuffer(sprites, count, &SHADER_UNLIT, material);  // auto-flushes when batch full
+spriteBatchFlush();  // flush remaining
+
+// Low-level: write directly to an external mesh (for baking static geometry):
+spriteBatchBufferToMesh(sprites, count, vertices, verticesSize);
+```
+
+`spritebatchsprite_t`:
+```c
+typedef struct {
+  vec3 min, max;     // 3D bounding box
+  vec2 uvMin, uvMax; // texture region
+} spritebatchsprite_t;
+```
+
+The global `SPRITEBATCH` and its vertex backing array `SPRITEBATCH_VERTICES[]` are defined externally to the struct to satisfy alignment requirements on certain platforms.
+
+---
+
+## Text (`display/text/`)
+
+Text rendering uses `FONT_DEFAULT` (loaded during `textInit()`), which references a texture and a tileset. Characters start at ASCII `!` (`TEXT_CHAR_START`).
+
+```c
+textDraw(x, y, "Hello", COLOR_WHITE, &FONT_DEFAULT);
+textMeasure("Hello", &FONT_DEFAULT, &outWidth, &outHeight);
+
+// Single-char sprite for manual layout:
+spritebatchsprite_t s = textGetSprite(pos, 'A', &FONT_DEFAULT);
+```
+
+`font_t` holds a `texture_t *` and a `tileset_t *` — both are owned by the asset system, not the font struct.

.claude/input.md

@@ -0,0 +1,93 @@
+# Input System
+
+Source: `src/dusk/input/`
+
+The input system decouples physical hardware buttons from logical game actions via a binding layer. Actions are defined in `src/dusk/input/input.csv` and code-generated into `inputaction_t` enum values — see [architecture.md](architecture.md#code-generation-from-csv).
+
+---
+
+## Concepts
+
+**Button** (`inputbutton_t`) — a physical input source: a keyboard scancode, gamepad button, gamepad axis, or pointer axis. The available button types depend on which `DUSK_INPUT_*` defines are active for the target platform.
+
+**Action** (`inputaction_t`) — a logical game input (e.g. `INPUT_ACTION_UP`, `INPUT_ACTION_CONFIRM`, `INPUT_ACTION_RAGEQUIT`). Each action accumulates a float value `[0.0, 1.0]` from all buttons bound to it.
+
+**Binding** — a many-to-one mapping from buttons to actions. Bindings are registered at runtime with `inputBind(button, action)`.
+
+---
+
+## Querying actions
+
+```c
+// Boolean helpers (current frame):
+inputIsDown(action)        // value > 0 this frame
+inputPressed(action)       // down this frame but not last
+inputReleased(action)      // down last frame but not this
+
+// Last frame state:
+inputWasDown(action)
+
+// Raw float value:
+inputGetCurrentValue(action)   // [0.0, 1.0]
+inputGetLastValue(action)
+
+// Axis helpers — combine two opposing actions into a signed float:
+float_t h = inputAxis(INPUT_ACTION_LEFT, INPUT_ACTION_RIGHT);  // -1.0 to 1.0
+inputAxis2D(negX, posX, negY, posY, result);   // fills vec2
+inputAngle2D(negX, posX, negY, posY, result);  // atan2-based normalized direction
+
+// Deadzone:
+float_t clean = inputDeadzone(rawValue, 0.1f);
+```
+
+---
+
+## Dynamic values (`DUSK_TIME_DYNAMIC`)
+
+On platforms with variable frame rates, each action also tracks `dynamicDelta`-scaled values:
+
+```c
+inputGetCurrentValueDynamic(action)
+inputGetLastValueDynamic(action)
+```
+
+These account for the actual time elapsed since the last frame, so movement calculated from them is frame-rate independent.
+
+---
+
+## Events on actions
+
+Each `inputactiondata_t` exposes `onPressed` and `onReleased` events:
+
+```c
+eventSubscribe(&INPUT.actions[INPUT_ACTION_CONFIRM].onPressed, myCallback, myUser);
+```
+
+The callback signature is `void cb(void *params, void *user)`. `params` is always `NULL` for input events.
+
+---
+
+## Buttons and bindings
+
+Physical buttons are typed via `inputbuttontype_t`:
+
+| Constant | When available | Payload |
+|---|---|---|
+| `INPUT_BUTTON_TYPE_KEYBOARD` | `DUSK_INPUT_KEYBOARD` | `inputscancode_t` |
+| `INPUT_BUTTON_TYPE_GAMEPAD` | `DUSK_INPUT_GAMEPAD` | `inputgamepadbutton_t` |
+| `INPUT_BUTTON_TYPE_GAMEPAD_AXIS` | `DUSK_INPUT_GAMEPAD` | axis + positive direction flag |
+| `INPUT_BUTTON_TYPE_POINTER` | `DUSK_INPUT_POINTER` | `inputpointeraxis_t` |
+
+Button names and default bindings are defined in `input.csv`. Look up a button by name:
+```c
+inputbutton_t btn = inputButtonGetByName("keyboard_w");
+inputBind(btn, INPUT_ACTION_UP);
+```
+
+`INPUT_BUTTON_DATA[]` holds runtime state (current/last raw values) for every physical button.
+
+---
+
+## Platform platform-specific reads
+
+`inputButtonGetValuePlatform(button)` is the one required platform function — it returns the current raw `[0.0, 1.0]` value for a button. The platform implementations live in `src/dusk{platform}/input/`.

.claude/rpg/cutscene.md

@@ -0,0 +1,149 @@
+# Cutscenes
+
+Two distinct layers: a low-level engine sequencer (`src/dusk/cutscene/`) and a higher-level RPG wrapper (`src/dusk/rpg/cutscene/`). Almost all game code works with the RPG layer.
+
+---
+
+## Engine sequencer (`src/dusk/cutscene/`)
+
+`cutscene_t CUTSCENE` is a minimal event runner with up to `CUTSCENE_EVENT_COUNT_MAX` (16) `cutsceneevent_t` slots. Each event has three callbacks:
+
+```c
+typedef struct {
+  errorret_t (*onStart)(void);
+  errorret_t (*onUpdate)(void);
+  errorret_t (*onEnd)(void);
+} cutsceneevent_t;
+```
+
+API:
+```c
+cutscenePlay(events, count);   // copy events array and start from index 0
+cutsceneAdvance();             // end current event, start next (deactivates after last)
+cutsceneStop();                // abort immediately
+cutsceneIsActive();            // bool
+```
+
+This layer is primarily used by the RPG cutscene system — game code doesn't normally touch it directly.
+
+---
+
+## RPG cutscene layer (`src/dusk/rpg/cutscene/`)
+
+### Data structures
+
+A `cutscene_t` is just a pointer to an item array and a count:
+
+```c
+typedef struct cutscene_s {
+  const cutsceneitem_t *items;
+  uint8_t itemCount;
+} cutscene_t;
+```
+
+A `cutsceneitem_t` is a tagged union of all item types:
+
+```c
+typedef struct cutsceneitem_s {
+  cutsceneitemtype_t type;
+  union {
+    cutscenetext_t    text;      // display text in textbox
+    cutscenecallback_t callback; // call a void(*)(void) function
+    cutscenewait_t    wait;      // pause for a fixed_t duration (seconds)
+    const cutscene_t *cutscene;  // nest another cutscene
+  };
+} cutsceneitem_t;
+```
+
+### Item types
+
+| Type constant | Payload | Behaviour |
+|---|---|---|
+| `CUTSCENE_ITEM_TYPE_TEXT` | `cutscenetext_t` — `text[256]` + `rpgtextboxpos_t position` | Shows textbox; advances on player confirm input |
+| `CUTSCENE_ITEM_TYPE_CALLBACK` | `cutscenecallback_t` (function pointer) | Calls the function once, then immediately advances |
+| `CUTSCENE_ITEM_TYPE_WAIT` | `cutscenewait_t` (a `fixed_t` in seconds) | Counts down `animTime` each frame, then advances |
+| `CUTSCENE_ITEM_TYPE_CUTSCENE` | `const cutscene_t *` | Plays the nested cutscene before continuing |
+
+### Runtime state
+
+`cutscenesystem_t CUTSCENE_SYSTEM` tracks:
+- `scene` — pointer to the active `cutscene_t`
+- `currentItem` — index into `scene->items[]`
+- `data` — per-item runtime data (`cutsceneitemdata_t`, currently just `cutscenewaitdata_t`)
+- `mode` — the current `cutscenemode_t`
+
+API:
+```c
+cutsceneSystemStartCutscene(cutscene);   // begin playing a cutscene
+cutsceneSystemNext();                    // advance to next item
+cutsceneSystemUpdate();                  // called each frame from rpgUpdate
+cutsceneSystemGetCurrentItem();          // inspect active item
+```
+
+### Cutscene mode (`cutscenemode.h`)
+
+Each item can run in one of three modes:
+
+```c
+CUTSCENE_MODE_NONE           // no cutscene active
+CUTSCENE_MODE_FULL_FREEZE    // pause everything (not yet used)
+CUTSCENE_MODE_INPUT_FREEZE   // player input blocked (default: CUTSCENE_MODE_INITIAL)
+CUTSCENE_MODE_GAMEPLAY       // player can still move during cutscene
+```
+
+`cutsceneModeIsInputAllowed()` is checked by `entityUpdate()` before invoking the movement callback — the player cannot walk when in INPUT_FREEZE mode.
+
+### Defining a cutscene
+
+Cutscenes are defined as `static const` arrays in header files under `rpg/cutscene/scene/`. Example (`testcutscene.h`):
+
+```c
+static const cutsceneitem_t MY_CUTSCENE_ITEMS[] = {
+  {
+    .type = CUTSCENE_ITEM_TYPE_TEXT,
+    .text = { .text = "Hello!", .position = RPG_TEXTBOX_POS_BOTTOM }
+  },
+  {
+    .type = CUTSCENE_ITEM_TYPE_WAIT,
+    .wait = FIXED(1.5f)
+  },
+  {
+    .type = CUTSCENE_ITEM_TYPE_CUTSCENE,
+    .cutscene = &ANOTHER_CUTSCENE
+  },
+};
+
+static const cutscene_t MY_CUTSCENE = {
+  .items = MY_CUTSCENE_ITEMS,
+  .itemCount = sizeof(MY_CUTSCENE_ITEMS) / sizeof(cutsceneitem_t)
+};
+```
+
+Attach to an NPC via its interact component:
+```c
+entity->interact.type = ENTITY_INTERACT_CUTSCENE;
+entity->interact.data.cutscene = &MY_CUTSCENE;
+```
+
+---
+
+## Textbox (`src/dusk/rpg/rpgtextbox.h`)
+
+`rpgtextbox_t RPG_TEXTBOX` is the global textbox state:
+
+```c
+typedef struct {
+  rpgtextboxpos_t position;      // RPG_TEXTBOX_POS_TOP or RPG_TEXTBOX_POS_BOTTOM
+  bool_t visible;
+  char_t text[RPG_TEXTBOX_MAX_CHARS];   // 256 chars
+} rpgtextbox_t;
+```
+
+API:
+```c
+rpgTextboxShow(position, text);   // copies text, sets visible = true
+rpgTextboxHide();                 // sets visible = false
+rpgTextboxIsVisible();            // bool
+```
+
+The textbox state is read by `ui/uitextbox.c` during the UI render pass to draw the dialogue box on screen. `rpgtextbox.c` itself does no rendering.

.claude/rpg/entity.md

@@ -0,0 +1,140 @@
+# Entities
+
+Source: `src/dusk/rpg/entity/`
+
+---
+
+## Storage
+
+Entities live in a single fixed global array:
+
+```c
+entity_t ENTITIES[ENTITY_COUNT];   // ENTITY_COUNT = 64
+```
+
+A slot is "empty" when `entity->type == ENTITY_TYPE_NULL`. Never allocate entity memory dynamically — always find a free slot with `entityGetAvailable()`, which returns its index (`0xFF` if none free).
+
+---
+
+## `entity_t` structure
+
+```c
+typedef struct entity_s {
+  uint8_t id;                  // index in ENTITIES[]
+  entitytype_t type;           // ENTITY_TYPE_NULL / PLAYER / NPC
+  entitytypedata_t data;       // union: player_t | npc_t
+
+  entitydir_t direction;       // facing direction (N/S/E/W)
+  fixed_t position[3];         // current sub-tile position (x, y, z)
+  fixed_t lastPosition[3];     // position before last move (for interpolation)
+
+  entityanim_t animation;      // IDLE / TURN / WALK
+  fixed_t animTime;            // countdown timer for current animation
+
+  entityinteract_t interact;   // optional interact component
+} entity_t;
+```
+
+---
+
+## Type system
+
+Entity types are defined in `entitytype.h` using the enum+integer-typedef pattern:
+
+```c
+typedef enum { ENTITY_TYPE_NULL, ENTITY_TYPE_PLAYER, ENTITY_TYPE_NPC, ENTITY_TYPE_COUNT } entitytype_enum_t;
+typedef uint8_t entitytype_t;
+```
+
+Each type has a `entitycallback_t` entry in the `ENTITY_CALLBACKS[ENTITY_TYPE_COUNT]` static table:
+
+```c
+typedef struct {
+  void (*init)(entity_t *entity);
+  void (*movement)(entity_t *entity);
+  bool_t (*interact)(entity_t *player, entity_t *entity);
+} entitycallback_t;
+```
+
+Callbacks not applicable to a type are `NULL`; `entityUpdate()` guards against this before calling.
+
+Type-specific data sits in `entitytypedata_t` (a union of `player_t` and `npc_t`). Currently both are stubs (`void *nothing`).
+
+---
+
+## Direction (`entitydir.h`)
+
+```c
+ENTITY_DIR_NORTH / EAST / SOUTH / WEST
+```
+
+Aliases: `UP = NORTH`, `DOWN = SOUTH`, `LEFT = WEST`, `RIGHT = EAST`.
+
+Utilities:
+- `entityDirGetOpposite(dir)` — returns the opposite direction.
+- `entityDirGetRelative(dir, &relX, &relY)` — fills in the ±1 XY delta for that direction.
+- `assertValidEntityDir(dir, msg)` — assertion macro.
+
+---
+
+## Animation (`entityanim.h`)
+
+```c
+ENTITY_ANIM_IDLE   // standing still
+ENTITY_ANIM_TURN   // turning to a new direction (ENTITY_ANIM_TURN_DURATION = FIXED(0.06))
+ENTITY_ANIM_WALK   // mid-step (ENTITY_ANIM_WALK_DURATION = FIXED(0.1))
+```
+
+`entityAnimUpdate(entity)` decrements `animTime` each frame and transitions back to `IDLE` when it reaches zero.
+
+`entityCanWalk(entity)` / `entityCanTurn(entity)` both return true only when `animation == ENTITY_ANIM_IDLE`.
+
+The renderer interpolates between `lastPosition` and `position` using `animTime / WALK_DURATION` to produce smooth motion even at low frame rates.
+
+---
+
+## Movement
+
+`entityWalk(entity, direction)`:
+
+1. Converts `entity->position` to a `worldpos_t` (truncates fractional part).
+2. Applies the directional delta to get `newPos`.
+3. Checks the current and target tiles for ramp raise/fall logic (see [world.md](world.md)).
+4. Checks `ENTITIES[]` for another entity occupying `newPos` — blocks if found.
+5. On success: copies `position` to `lastPosition`, updates `position` to `newPos` (via `worldPosToFixed`), sets `animation = ENTITY_ANIM_WALK`.
+
+`entityTurn(entity, direction)`: sets `direction` and starts a brief turn animation.
+
+---
+
+## Interaction (`entityinteract.h`)
+
+The `entityinteract_t` component is embedded in every entity. It is optional — set `type = ENTITY_INTERACT_NULL` for non-interactable entities.
+
+```c
+typedef enum {
+  ENTITY_INTERACT_NULL,
+  ENTITY_INTERACT_CUTSCENE,   // plays a cutscene_t *
+  ENTITY_INTERACT_PRINT,      // prints a short message[32]
+} entityinteracttype_t;
+```
+
+`entityInteractWith(player, target)` dispatches:
+1. If the interact component's `type != NULL`, handles it (starts the cutscene or prints the message).
+2. Otherwise falls back to `ENTITY_CALLBACKS[type].interact` if set.
+
+---
+
+## Player (`player.h` / `player.c`)
+
+`playerInit()` is called via `ENTITY_CALLBACKS[ENTITY_TYPE_PLAYER].init`.
+
+`playerInput(entity)` is the movement callback. It reads `PLAYER_INPUT_DIR_MAP[]` — a static table mapping input actions (`INPUT_ACTION_UP/DOWN/LEFT/RIGHT`) to entity directions — and calls `entityWalk` or `entityTurn` accordingly.
+
+The player entity is normally `ENTITIES[0]` but there is no hardcoded assumption about its index beyond being initialized with `ENTITY_TYPE_PLAYER`.
+
+---
+
+## NPC (`npc.h` / `npc.c`)
+
+`npcInit()`, `npcMovement()`, and `npcInteract()` provide the NPC type callbacks. Currently stubs; movement does nothing, interact returns false.

.claude/rpg/index.md

@@ -0,0 +1,18 @@
+# RPG Layer
+
+The RPG layer lives in `src/dusk/rpg/` and is the game-logic tier above the engine. It is initialized and ticked by `engine.c` via `rpgInit` / `rpgUpdate` / `rpgDispose`. The `rpg_t` struct is currently a stub; all meaningful state lives in the subsystems below.
+
+## Contents
+
+- [world.md](world.md) — scene manager, overworld map, chunks, tiles, coordinate system, camera
+- [entity.md](entity.md) — entity pool, types, direction, animation, interaction, player, NPC
+- [cutscene.md](cutscene.md) — cutscene system, item types, mode control, textbox
+- [story.md](story.md) — story flags, items, inventory, backpack, save system
+
+## Scene system
+
+The scene manager (`src/dusk/scene/`) sits above the RPG layer and owns the single active scene. Scenes are identified by `scenetype_t` and registered in `SCENE_TYPES[]` (`scene/scenetype.c`) as `scenecallbacks_t` (init / update / render / dispose).
+
+`scenedata_t` is a union so all scene structs share memory. `sceneSet(type)` defers the transition — the old scene disposes before the new one inits.
+
+Currently the only scene is `SCENE_TYPE_OVERWORLD` → `src/dusk/scene/overworld/sceneoverworld.c`.

.claude/rpg/story.md

@@ -0,0 +1,124 @@
+# Story, Items & Save
+
+---
+
+## Story flags (`src/dusk/rpg/story/`)
+
+Story flags are the primary mechanism for tracking game-world state (quest progress, one-time events, unlocks). Each flag is a `uint8_t` value (`storyflagvalue_t`), so they can hold booleans or small counts.
+
+### Defining flags
+
+Flags are defined in `src/dusk/rpg/story/storyflag.csv`:
+
+```
+id,description,initial
+test,"Test flag for debugging purposes",1
+```
+
+The build tool generates:
+- A `storyflag_t` enum (e.g. `STORY_FLAG_TEST`) in the generated header.
+- `STORY_FLAG_VALUES[]` — the runtime array, pre-populated with the `initial` column values.
+
+To add a flag: add a row to the CSV. The build re-runs the Python tool automatically on the next CMake build.
+
+### Access
+
+```c
+storyflagvalue_t v = storyFlagGet(STORY_FLAG_TEST);   // macro: array read
+storyFlagSet(STORY_FLAG_TEST, 1);                      // function: also marks save dirty
+```
+
+`storyFlagGet` is a macro that directly indexes `STORY_FLAG_VALUES[]` — no function call overhead.
+
+---
+
+## Items (`src/dusk/rpg/item/`)
+
+### Item definitions
+
+Items are defined in `src/dusk/rpg/item/item.csv`. The build tool generates `itemid_t` enum values and item metadata. `itemid_t` is a generated `uint8_t` typedef.
+
+### Inventory (`inventory.h`)
+
+`inventory_t` is a generic container backed by a caller-supplied `inventorystack_t` array:
+
+```c
+typedef struct {
+  itemid_t item;
+  uint8_t quantity;        // max ITEM_STACK_QUANTITY_MAX (255)
+} inventorystack_t;
+
+typedef struct {
+  inventorystack_t *storage;
+  uint8_t storageSize;
+} inventory_t;
+```
+
+Key operations:
+
+```c
+inventoryInit(&inv, storageArray, size);
+inventoryAdd(&inv, ITEM_POTION, 3);
+inventoryRemove(&inv, ITEM_POTION);
+inventorySet(&inv, ITEM_POTION, 10);
+inventoryGetCount(&inv, ITEM_POTION);   // returns 0 if not present
+inventoryItemExists(&inv, ITEM_POTION);
+inventoryIsFull(&inv);
+inventorySort(&inv, INVENTORY_SORT_BY_ID, false);
+```
+
+`inventory_t` itself holds no data — the backing array is always external. This avoids fixed-size struct limits and lets different inventories (backpack, shop, chest) share the same logic.
+
+### Backpack (`backpack.h`)
+
+The player's inventory is the global `BACKPACK` instance:
+
+```c
+extern inventorystack_t BACKPACK_STORAGE[BACKPACK_STORAGE_SIZE_MAX];  // 20 slots
+extern inventory_t BACKPACK;
+
+backpackInit();   // wires BACKPACK_STORAGE into BACKPACK
+```
+
+---
+
+## Save system (`src/dusk/save/`)
+
+The save system is stubbed out — it exists and compiles but is commented out of engine init (`engine.c`). What follows describes the design as implemented.
+
+### Slots
+
+`save_t SAVE` holds `SAVE_FILE_COUNT_MAX` slots:
+
+```c
+typedef struct {
+  savefile_t files[SAVE_FILE_COUNT_MAX];
+  saveplatform_t platform;   // platform-specific state (paths, card handles)
+} save_t;
+```
+
+### Streams
+
+`savestream_t` (`save/savestream.h`) is a raw byte cursor used to serialize/deserialize `savefile_t`. Platform backends in `src/dusk{platform}/save/` implement the actual I/O:
+- Linux: filesystem files in a save directory.
+- GameCube/Wii: memory card via libogc.
+
+### API
+
+```c
+saveInit();
+saveLoad(slot);     // reads platform storage → savefile_t
+saveWrite(slot);    // writes savefile_t → platform storage
+saveDelete(slot);
+saveExists(slot);   // bool
+saveGet(slot);      // returns savefile_t *
+saveDispose();
+```
+
+---
+
+## Locale / i18n (`src/dusk/locale/`)
+
+Translations are loaded from `.po` files in `assets/locale/` (e.g. `en_US.po`). `localemanager.c` manages the active locale and exposes a key→string lookup. `assetlocaleloader.c` parses the PO format via the asset system.
+
+All player-visible strings must go through the locale system rather than being hardcoded. The locale is loaded asynchronously via the asset system so it is available before the first scene renders.

.claude/rpg/world.md

@@ -0,0 +1,114 @@
+# World
+
+Source: `src/dusk/rpg/overworld/`
+
+---
+
+## Coordinate system
+
+Three nested coordinate spaces, each defined in `worldpos.h`:
+
+| Type | Description | Unit |
+|---|---|---|
+| `worldpos_t` | Tile-level absolute position `{x, y, z}` | `worldunit_t` (int16) |
+| `chunkpos_t` | Chunk-grid position `{x, y, z}` | `chunkunit_t` (int16) |
+| `fixed_t[3]` | Smooth sub-tile position used by entities | Q24.8 fixed-point |
+
+One chunk = `CHUNK_WIDTH × CHUNK_HEIGHT × CHUNK_DEPTH` tiles (16 × 16 × 8).
+The loaded world window = `MAP_CHUNK_WIDTH × MAP_CHUNK_HEIGHT × MAP_CHUNK_DEPTH` chunks (5 × 5 × 3).
+
+Conversion helpers (all in `worldpos.c`):
+
+```c
+worldPosToChunkPos(&worldPos, &chunkPos);   // tile → chunk grid
+chunkPosToWorldPos(&chunkPos, &worldPos);   // chunk grid → tile origin
+worldPosToChunkTileIndex(&worldPos);        // tile → index within its chunk
+chunkPosToIndex(&chunkPos);                 // chunk grid → linear index in MAP.chunks[]
+worldPosToFixed(&worldPos, fixedOut);       // tile → entity fixed position
+fixedToWorldPos(fixedPos);                  // entity fixed → tile (truncates frac)
+```
+
+---
+
+## Tiles
+
+Defined in `tile.h` as a plain `tile_t` enum:
+
+```
+TILE_SHAPE_NULL    — empty / unloaded
+TILE_SHAPE_GROUND  — solid flat tile
+TILE_SHAPE_RAMP_*  — directional ramps (N/S/E/W + diagonals NE/NW/SE/SW)
+```
+
+Key predicates:
+- `tileIsWalkable(tile)` — true for GROUND and all ramp shapes.
+- `tileIsRamp(tile)` — true only for ramp shapes.
+
+Entity walk code (`entity.c`) checks both the current tile and the target tile to decide whether the entity steps forward flat, raises one Z level (walking up a ramp), or falls one Z level (stepping onto a downward ramp from above).
+
+---
+
+## Chunks
+
+`chunk_t` (`chunk.h`) holds:
+- `position` — its `chunkpos_t` in the world grid
+- `tiles[CHUNK_TILE_COUNT]` — flat array of `tile_t`, indexed by `chunkGetTileIndex()`
+- `vertices[CHUNK_VERTEX_COUNT]` / `mesh` — pre-baked mesh uploaded to GPU on load
+- `entities[CHUNK_ENTITY_COUNT_MAX]` — indices into `ENTITIES[]` currently in this chunk (sentinel `0xFF`)
+- `testColor` — temporary debug color (checkerboard), will be replaced by real tileset data
+
+Tile layout within a chunk is `z * W*H + y * W + x` (Z-major, row-major in XY).
+
+---
+
+## Map
+
+`map_t MAP` (`map.h`) is the single global map instance.
+
+```c
+chunk_t chunks[MAP_CHUNK_COUNT];         // flat storage — index is NOT world position
+chunk_t *chunkOrder[MAP_CHUNK_COUNT];    // draw-order sorted pointers into chunks[]
+chunkpos_t chunkPosition;               // world-grid origin of the loaded window
+bool_t loaded;
+```
+
+### Load / unload
+
+`mapInit()` allocates chunk meshes and performs the initial load of all chunks in the starting window.
+
+`mapPositionSet(newPos)` shifts the window:
+1. Determines which of the `MAP_CHUNK_COUNT` slots remain within the new window vs. fall outside it.
+2. Calls `mapChunkUnload()` on every chunk that falls outside (nulls its entity slots, zeroes `vertCount`).
+3. Reuses freed slots for newly-in-range chunks; calls `mapChunkLoad()` on each.
+4. Rebuilds `chunkOrder[]` in XYZ order for the new position.
+
+### Chunk load (current stub)
+
+`mapChunkLoad()` currently:
+- Fills all tiles with `TILE_SHAPE_GROUND`
+- Assigns a checkerboard debug color based on chunk XY parity
+- Bakes a flat sprite-batch quad mesh for the z=0 layer and uploads it via `meshFlush()`
+- Skips mesh generation for z > 0 chunks (they're empty)
+
+### Tile lookup
+
+```c
+tile_t mapGetTile(const worldpos_t position);
+```
+
+Converts `position` to its chunk, looks up the chunk in `chunkOrder`, then indexes into `chunk->tiles[]`. Returns `TILE_SHAPE_NULL` for any out-of-bounds position or when the map is not loaded.
+
+---
+
+## Camera
+
+`rpgcamera_t RPG_CAMERA` (`rpgcamera.h`) has two modes:
+
+```c
+RPG_CAMERA_MODE_FREE            // free worldpos; camera.free holds the position
+RPG_CAMERA_MODE_FOLLOW_ENTITY   // tracks ENTITIES[followEntityId]
+```
+
+`rpgCameraGetPosition()` returns the active world tile position in either mode.
+
+The scene renderer (`sceneoverworld.c`) uses `rpgCameraGetPosition()` to build the `glm_lookat` view matrix. When following an entity, it sub-tile interpolates between `entity->lastPosition` and `entity->position` using `entity->animTime / ENTITY_ANIM_WALK_DURATION` to smooth movement.

.claude/save.md

@@ -0,0 +1,96 @@
+# Save & Locale
+
+---
+
+## Save system (`src/dusk/save/`)
+
+Slot-based persistent storage. Currently disabled in engine init (commented out in `engine.c`) — the system is fully implemented but not yet wired up.
+
+### Slots
+
+Up to `SAVE_FILE_COUNT_MAX` (3) save slots. The global `SAVE` holds all slots:
+
+```c
+saveInit();
+saveExists(slot);          // bool_t — check before load
+saveLoad(slot);            // read from platform storage → SAVE.files[slot]
+saveWrite(slot);           // write SAVE.files[slot] → platform storage
+saveDelete(slot);
+savefile_t *f = saveGet(slot);
+saveDispose();
+```
+
+### Save file format
+
+`savefile_t` is the serialized struct stored per slot. Currently minimal:
+
+```c
+typedef struct {
+  char_t header[3];    // "DSK"
+  uint32_t version;    // SAVE_FILE_VERSION = 1
+  bool_t exists;
+} savefile_t;
+```
+
+Extend this struct to add game-specific save data (player position, story flags, etc.).
+
+### Stream serialization (`save/savestream.h`)
+
+`savestream_t` is a cursor used to read/write a save slot's bytes. It CRC32-checksums all data written through it and verifies the checksum on read.
+
+Write a save:
+```c
+savestream_t stream;
+// (platform opens stream for slot)
+saveFileWriteHeader(&stream, SAVE_FILE_HEADER);
+saveFileWriteVersion(&stream, SAVE_FILE_VERSION);
+saveFileWriteBool(&stream, myFlag);
+saveFileWriteInt32(&stream, myInt);
+saveFileWriteString(&stream, myString, sizeof(myString));
+saveStreamFinalizeWriteImpl(&stream);   // writes CRC
+```
+
+Read a save:
+```c
+saveFileReadHeader(&stream, headerBuf);
+saveFileReadVersion(&stream, &version);
+saveFileReadBool(&stream, &myFlag);
+saveFileReadInt32(&stream, &myInt);
+saveFileReadString(&stream, myString, sizeof(myString));
+saveStreamVerifyChecksumImpl(&stream, slot);   // returns error if CRC mismatch
+```
+
+All multi-byte values are stored in little-endian byte order. The `saveFile*` macros are thin wrappers over the `*Impl` functions that integrate `errorChain` — always use the macros.
+
+### Platform backends
+
+Each `src/dusk{platform}/save/` provides `saveplatform_t` (e.g. a file path on Linux, a memory-card handle on GameCube). The stream implementations (`savestream{platform}.c`) do the actual I/O.
+
+---
+
+## Locale / i18n (`src/dusk/locale/`)
+
+Translations are stored as GNU `.po` files in `assets/locale/`. Only `en_US.po` currently exists.
+
+### Loading
+
+`localemanager_t LOCALE` tracks the active locale and its in-progress asset entry:
+
+```c
+localeManagerInit();                         // loads en_US by default
+localeManagerSetLocale(&LOCALE_EN_US);       // switch locale (async load)
+localeManagerDispose();
+```
+
+`LOCALE_EN_US` is a predefined `localeinfo_t` constant (`name = "en-US"`, `file = "locale/en_US.po"`).
+
+### Looking up strings
+
+```c
+char_t buf[128];
+localeManagerGetText("my.key", buf, sizeof(buf), 1, /* format args */ );
+```
+
+The macro handles plural forms and `printf`-style format arguments. Pass plural `1` for singular, any other value for plural.
+
+`assetlocaleloader.c` parses the `.po` format (msgid / msgstr pairs) into a key→string table during the async asset load phase.

.claude/style.md

@@ -0,0 +1,382 @@
+# Coding Style
+
+All source is C11. Everything below is derived from the existing codebase — match it exactly.
+
+---
+
+## File structure
+
+### Headers (`.h`)
+
+```c
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "direct/dependency.h"
+```
+
+- `#pragma once` always, never `#ifndef` guards.
+- No blank line between the license block and `#pragma once`.
+- One blank line between `#pragma once` and the first `#include`.
+
+### Sources (`.c`)
+
+```c
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "thisfile.h"
+#include "assert/assert.h"
+#include "util/memory.h"
+```
+
+- First include is always the matching `.h` for this `.c` file.
+- Remaining includes follow with no separator unless logically grouped (then one blank line between groups — see [Include order](#include-order)).
+
+---
+
+## Include order
+
+In `.c` files, include in this order with a blank line between each group:
+
+1. The matching header (e.g. `#include "entity.h"`)
+2. Core utilities (`assert/assert.h`, `util/memory.h`, `util/math.h`, etc.)
+3. Engine subsystems (`display/...`, `input/...`, etc.)
+4. Domain subsystems (`rpg/...`, `scene/...`, etc.)
+
+In `.h` files, only include what the header directly requires. Never include more than necessary to make the type definitions in that header compile.
+
+All include paths are relative to `src/dusk/` (the root include directory). Use the full path:
+```c
+#include "rpg/overworld/map.h"   // correct
+#include "map.h"                  // wrong
+```
+
+---
+
+## Line length
+
+80-character limit. Break before it, not after.
+
+Multi-parameter function signatures break one param per line, with 2-space indent, closing `)` on its own line before `{`:
+
+```c
+errorret_t textureInit(
+  texture_t *texture,
+  const int32_t width,
+  const int32_t height,
+  const textureformat_t format,
+  const texturedata_t data
+) {
+```
+
+Same rule for calls that don't fit on one line:
+
+```c
+assertTrue(
+  data.paletted.palette->count ==
+  mathNextPowTwo(data.paletted.palette->count),
+  "Palette color count must be a power of 2"
+);
+```
+
+---
+
+## Indentation and spacing
+
+- **2 spaces** per indent level. No tabs.
+- No space between a control keyword and its `(`:
+  ```c
+  if(x) {        // correct
+  if (x) {       // wrong
+  ```
+- No space between a function name and its `(` in either declarations or calls.
+- Opening brace on the same line:
+  ```c
+  void entityUpdate(entity_t *entity) {
+  if(x) {
+  for(int i = 0; i < n; i++) {
+  ```
+- Closing brace always on its own line, except `} else {` and `} while(...)`.
+- One blank line between function definitions in `.c` files.
+- No trailing whitespace.
+
+---
+
+## Naming
+
+| Kind | Convention | Example |
+|---|---|---|
+| Types (struct/union/typedef) | `snake_case_t` | `entity_t`, `worldpos_t` |
+| Struct tags | `struct name_s` | `struct entity_s` |
+| Union tags | `union name_u` | `union texturedata_u` |
+| Enum tags (when typedef'd separately) | `name_enum_t` | `entitytype_enum_t` |
+| Functions | `subsystemVerb` (camelCase, noun-first) | `entityInit`, `mapGetTile` |
+| Macro constants | `UPPER_SNAKE_CASE` | `CHUNK_WIDTH`, `FIXED_ONE` |
+| Function-like macros | `camelCase` (same as functions) | `errorThrow`, `assertNotNull` |
+| Global subsystem instances | `UPPER_SNAKE_CASE` | `ENGINE`, `MAP`, `ENTITIES` |
+| Local variables | `camelCase` | `tileNew`, `spriteCount` |
+| Parameters | `camelCase` | `texture`, `worldPos` |
+
+Subsystem prefix always comes first in function names: `textureInit`, `shaderBind`, `spriteBatchFlush`. The verb describes the action: `Init`, `Update`, `Dispose`, `Get`, `Set`, `Is`, etc.
+
+---
+
+## Typedefs
+
+### Structs
+
+```c
+typedef struct {
+  uint8_t id;
+  entitytype_t type;
+} entity_t;
+```
+
+Use a named tag (`struct entity_s`) only when forward declaration is required:
+
+```c
+typedef struct entity_s {
+  // ...
+} entity_t;
+```
+
+### Unions
+
+```c
+typedef union texturedata_u {
+  struct {
+    uint8_t *indices;
+    palette_t *palette;
+  } paletted;
+  color_t *rgbaColors;
+} texturedata_t;
+```
+
+### Enums
+
+When the enum values need to be a compact integer (common for arrays and flags), declare the enum separately and typedef an integer type:
+
+```c
+typedef enum {
+  ENTITY_TYPE_NULL,
+  ENTITY_TYPE_PLAYER,
+  ENTITY_TYPE_NPC,
+  ENTITY_TYPE_COUNT
+} entitytype_enum_t;
+
+typedef uint8_t entitytype_t;  // actual type used everywhere
+```
+
+Always include `_NULL` as the first value (zero) and `_COUNT` as the last value.
+
+---
+
+## `#define` constants
+
+All-caps, underscores. Wrap multi-token expressions in parentheses:
+
+```c
+#define CHUNK_WIDTH 16
+#define CHUNK_HEIGHT CHUNK_WIDTH
+#define CHUNK_TILE_COUNT (CHUNK_WIDTH * CHUNK_HEIGHT * CHUNK_DEPTH)
+```
+
+Multi-line macros: backslash continuation, body indented 2 spaces, closing line has no backslash:
+
+```c
+#define errorThrow(message, ...) \
+  return errorThrowImpl(\
+    &ERROR_STATE, ERROR_NOT_OK, __FILE__, __func__, __LINE__, (message), \
+    ##__VA_ARGS__ \
+  )
+```
+
+---
+
+## `const` usage
+
+Mark every pointer and value parameter `const` unless the function modifies it:
+
+```c
+void entityTurn(entity_t *entity, const entitydir_t direction);
+errorret_t textureInit(texture_t *texture, const int32_t width, ...);
+```
+
+`entity_t *entity` is non-const because the function writes to it; `direction` is const because it is read-only.
+
+---
+
+## `void` in no-argument functions
+
+Use `(void)` in definitions and declarations of zero-parameter functions:
+
+```c
+errorret_t engineUpdate(void);
+errorret_t spriteBatchFlush(void);
+```
+
+---
+
+## Global subsystem state
+
+Each subsystem exposes a single global instance declared `extern` in the header and defined (once) in the `.c` file:
+
+```c
+// entity.h
+extern entity_t ENTITIES[ENTITY_COUNT];
+
+// entity.c
+entity_t ENTITIES[ENTITY_COUNT];
+```
+
+Never define a subsystem global as `static` in a header.
+
+---
+
+## Assertions
+
+Place assertions at the very top of a function, before any logic:
+
+```c
+void entityInit(entity_t *entity, const entitytype_t type) {
+  assertNotNull(entity, "Entity pointer cannot be NULL");
+  assertTrue(type < ENTITY_TYPE_COUNT, "Invalid entity type");
+  // ... actual logic
+}
+```
+
+Available assertion macros (from `assert/assert.h`):
+- `assertNotNull(ptr, msg)`
+- `assertNull(ptr, msg)`
+- `assertTrue(expr, msg)`
+- `assertFalse(expr, msg)`
+- `assertUnreachable(msg)`
+- `assertStringEqual(a, b, msg)`
+- `assertIsMainThread(msg)` / `assertNotMainThread(msg)`
+
+---
+
+## Error handling style
+
+Functions that can fail return `errorret_t`. Three patterns:
+
+```c
+// Propagate a child call's failure and return from this function:
+errorChain(someCall());
+
+// Return success:
+errorOk();
+
+// Return failure:
+errorThrow("Descriptive message %s", variable);
+```
+
+`errorChain` is used inline — do not capture the result first:
+```c
+errorChain(textureInitPlatform(texture, width, height, format, data));  // correct
+errorret_t r = textureInitPlatform(...); errorChain(r);                 // wrong
+```
+
+---
+
+## Struct initialization
+
+Use C99 designated initializers for any struct literal with more than one field:
+
+```c
+static const entitycallback_t ENTITY_CALLBACKS[ENTITY_TYPE_COUNT] = {
+  [ENTITY_TYPE_NULL] = { NULL },
+
+  [ENTITY_TYPE_PLAYER] = {
+    .init = playerInit,
+    .movement = playerInput
+  },
+};
+```
+
+```c
+shadermaterial_t material = {
+  .unlit = {
+    .color = COLOR_WHITE,
+    .texture = NULL
+  }
+};
+```
+
+---
+
+## Fixed-size array iteration
+
+Prefer pointer arithmetic with `do/while` over index loops for iterating through fixed global arrays:
+
+```c
+entity_t *ent = ENTITIES;
+do {
+  if(ent->type == ENTITY_TYPE_NULL) continue;
+  // ...
+} while(++ent, ent < &ENTITIES[ENTITY_COUNT]);
+```
+
+Use `for` loops when an index variable is actually needed.
+
+---
+
+## Comments
+
+Comments explain *why*, not *what*. One short inline comment is fine; multi-line block comments for non-obvious invariants only.
+
+```c
+// Walking up a ramp — only the direction the ramp faces is valid.
+if(tileIsRamp(tileCurrent) && ...) {
+```
+
+Section labels inside long functions are acceptable:
+
+```c
+// Chunks
+{
+  ...
+}
+
+// Entities
+{
+  ...
+}
+```
+
+Doc comments on public functions use Javadoc style with `@param` / `@return`:
+
+```c
+/**
+ * Gets the tile at the given world position.
+ *
+ * @param position The world position.
+ * @return The tile at that position, or TILE_NULL if the chunk is unloaded.
+ */
+tile_t mapGetTile(const worldpos_t position);
+```
+
+---
+
+## Platform-conditional code
+
+Use the `DUSK_*` compile-definition macros set by `cmake/targets/<target>.cmake`:
+
+```c
+#ifdef DUSK_THREAD_PTHREAD
+  #include "thread/thread.h"
+  extern pthread_t ASSERT_MAIN_THREAD_ID;
+#endif
+```
+
+Never use `#ifdef __linux__`, `#ifdef _WIN32`, etc. directly — go through the engine macros.

.claude/systems.md

@@ -0,0 +1,177 @@
+# Engine Systems
+
+Smaller systems that support the engine but don't warrant their own file each.
+
+---
+
+## Time (`src/dusk/time/`)
+
+`dusktime_t TIME` tracks fixed and dynamic delta time.
+
+```c
+TIME.delta         // fixed_t: always DUSK_TIME_STEP (16ms default) on fixed-rate platforms
+TIME.time          // fixed_t: total elapsed time in seconds
+```
+
+On platforms with `DUSK_TIME_DYNAMIC` (Linux/SDL2):
+```c
+TIME.dynamicDelta  // fixed_t: actual time since last frame
+TIME.dynamicTime   // fixed_t: total elapsed (dynamic)
+TIME.dynamicUpdate // bool_t: true when a real tick occurred
+```
+
+Call `timeUpdate()` once per frame (before input/logic). `timeGetEpoch()` returns the current wall-clock time as a `dusktimeepoch_t`.
+
+### Epoch time (`time/timeepoch.h`)
+
+`dusktimeepoch_t` stores a Unix timestamp (double) with timezone offset. Utilities:
+
+```c
+dusktimeepoch_t e = timeGetEpoch();
+timeEpochGetHours(e)      // 0–23
+timeEpochGetMinutes(e)    // 0–59
+timeEpochGetSeconds(e)    // 0–59
+timeEpochGetDayOfMonth(e) // 0–30
+timeEpochGetMonth(e)      // 0–11
+timeEpochGetYear(e)
+
+// Format: %Y year, %m month, %d day, %H hour, %M minute, %S second
+timeEpochFormat(e, "%Y-%m-%d %H:%M:%S", buf, sizeof(buf));
+
+// Compare: returns -1, 0, 1
+timeEpochCompare(a, b);
+
+// Timezone shift:
+dusktimeepoch_t local = timeEpochSwitchTimeZone(e, offsetHours);
+```
+
+---
+
+## Thread (`src/dusk/thread/`)
+
+Currently only the pthread backend (`DUSK_THREAD_PTHREAD`) exists. Thread objects are `thread_t` — used primarily by the asset loader.
+
+```c
+threadInit(&thread, myCallback);   // myCallback: void (*)(thread_t *)
+threadStart(&thread);              // blocks until thread is RUNNING
+threadStop(&thread);               // requests stop, blocks until STOPPED
+
+// Inside the thread callback:
+while(!threadShouldStop(&thread)) { /* work */ }
+```
+
+State flow: `STOPPED → STARTING → RUNNING → (STOP_REQUESTED) → STOPPED`.
+
+### Mutex (`thread/threadmutex.h`)
+
+```c
+threadMutexInit(&lock);
+threadMutexLock(&lock);
+threadMutexUnlock(&lock);
+threadMutexTryLock(&lock);       // non-blocking; returns false if already held
+threadMutexWaitLock(&lock);      // release lock and sleep until signalled
+threadMutexSignal(&lock);        // wake a thread waiting on this mutex
+threadMutexDispose(&lock);
+```
+
+### Thread-local storage
+
+`THREAD_LOCAL` expands to `__thread` (GCC) on pthread platforms. Used for the per-thread error state (`ERROR_STATE` in `error/error.h`).
+
+---
+
+## Event (`src/dusk/event/`)
+
+A fixed-capacity multicast callback list.
+
+```c
+// Declare backing arrays (choose a size):
+eventcallback_t cbs[4];
+void *users[4];
+event_t myEvent;
+eventInit(&myEvent, cbs, users, 4);
+
+eventSubscribe(&myEvent, myCallback, myUser);
+eventUnsubscribe(&myEvent, myCallback);
+eventInvoke(&myEvent, params);   // calls all subscribers; params passed as-is
+```
+
+Callback signature: `void cb(void *params, void *user)`.
+
+`event_t` does not own its callback/user arrays. Always declare them alongside the event in the same struct or as static arrays.
+
+---
+
+## Console (`src/dusk/console/`)
+
+`CONSOLE` is a scrolling in-game terminal for debug output. On POSIX platforms (`DUSK_CONSOLE_POSIX`) it also polls stdin in a thread so commands can be typed during a running session.
+
+```c
+consolePrint("Value is %d", x);   // printf-style; thread-safe
+consoleDraw();                     // renders visible history lines to screen
+```
+
+Configuration constants (`consoledefs.h`):
+- `CONSOLE_LINE_MAX` — 512 chars per line
+- `CONSOLE_HISTORY_MAX` — 16 lines of scrollback
+- `CONSOLE_EXEC_BUFFER_MAX` — 32 pending exec commands
+
+`CONSOLE.visible` controls whether `consoleDraw()` actually renders anything.
+
+---
+
+## Log (`src/dusk/log/`)
+
+Two simple output functions, implemented per-platform:
+
+```c
+logDebug("format %s", arg);   // debug output (stdout on Linux, debug channel on consoles)
+logError("format %s", arg);   // error output; may pause execution on some platforms
+```
+
+These go directly to the platform's native output and are not buffered by the console history.
+
+---
+
+## System / Platform (`src/dusk/system/`)
+
+`systemInit()` runs platform-specific startup (e.g. Wii PAD init, PSP kernel setup). Must be the first call in `engineInit()`.
+
+```c
+systemplatform_t p = systemGetPlatform();   // SYSTEM_PLATFORM_LINUX, _PSP, etc.
+systemdialogtype_t d = systemGetActiveDialogType();
+// SYSTEM_DIALOG_TYPE_NONE / RENDER_BLOCKING / TICK_BLOCKING
+```
+
+The full platform list is defined via X-macro in `system/systemplatformlist.h`:
+
+| Constant | Value |
+|---|---|
+| `SYSTEM_PLATFORM_LINUX` | 0 |
+| `SYSTEM_PLATFORM_KNULLI` | 1 |
+| `SYSTEM_PLATFORM_PSP` | 2 |
+| `SYSTEM_PLATFORM_GAMECUBE` | 3 |
+| `SYSTEM_PLATFORM_WII` | 4 |
+
+---
+
+## Network (`src/dusk/network/`)
+
+`network_t NETWORK` manages platform connection state. The engine calls `networkInit` / `networkUpdate` / `networkDispose`; game code uses the request API:
+
+```c
+networkRequestConnection(onConnected, onFailed, onDisconnect, user);
+networkRequestDisconnection(onComplete, user);
+networkIsConnected();   // bool_t
+```
+
+State machine: `DISCONNECTED → CONNECTING → CONNECTED → DISCONNECTING → DISCONNECTED`.
+
+Network address info (after connection):
+```c
+networkinfo_t info = networkGetInfo();
+// info.type = NETWORK_TYPE_IPV4 / IPV6
+// info.ipv4.ip[4] or info.ipv6.ip[16]
+```
+
+Platform backends implement `networkPlatformInit/Update/Dispose/IsConnected`. Currently only Linux (socket-based) and PSP/Vita are implemented.

.claude/ui.md

@@ -0,0 +1,123 @@
+# UI System
+
+Source: `src/dusk/ui/`
+
+The UI system is an immediate-mode layer drawn on top of the game scene each frame. Elements register themselves; `uiUpdate()` ticks all elements and `uiRender()` draws them. All coordinates are in screen pixels.
+
+---
+
+## Lifecycle
+
+```
+uiInit() → uiTextboxInit()   // init order matters — textbox depends on display being ready
+uiUpdate()                   // each frame, before rendering
+uiRender()                   // each frame, after scene render
+uiDispose()
+uiTextboxDispose()
+```
+
+---
+
+## Element registration (`ui/uielement.h`)
+
+Elements are stored in `UI_ELEMENTS[]`. Each has a type and a `draw` callback:
+
+```c
+typedef struct {
+  uielementtype_t type;
+  errorret_t (*draw)();
+} uielement_t;
+```
+
+Currently `UI_ELEMENT_TYPE_NATIVE` elements call their `draw` function directly. New debug/HUD elements are registered by adding to this array.
+
+---
+
+## Textbox (`ui/uitextbox.h`)
+
+`UI_TEXTBOX` is the global dialogue box. It word-wraps text, paginates it, and plays a typewriter scroll effect.
+
+```c
+uiTextboxSetText("Long dialogue string...");  // wraps to charsPerLine, paginates
+uiTextboxUpdate();                            // each frame: advance scroll, check input
+uiTextboxDraw();                              // draw box + text
+
+// Pagination:
+uiTextboxPageIsComplete()   // true when all chars of current page are visible
+uiTextboxHasNextPage()
+uiTextboxNextPage()
+
+// Subscibe to page events:
+eventSubscribe(&UI_TEXTBOX.onPageComplete, cb, user);
+eventSubscribe(&UI_TEXTBOX.onLastPage, cb, user);
+```
+
+`UI_TEXTBOX.advanceAction` defaults to the input action that advances dialogue — set it before calling `uiTextboxInit()` if the default doesn't suit.
+
+Layout constants:
+- `UI_TEXTBOX_TEXT_MAX` — 1024 chars
+- `UI_TEXTBOX_LINES_MAX` — 64 lines
+- `UI_TEXTBOX_LINES_PER_PAGE_MAX` — 3 lines visible at once
+- `UI_TEXTBOX_SCROLL_CHARS_PER_TICK` — 1 char per tick (typewriter speed)
+
+The textbox uses `UI_TEXTBOX.frame` (a `uiframe_t`) for its border rendering and `UI_TEXTBOX.font` for text.
+
+---
+
+## UI Frame (`ui/uiframe.h`)
+
+9-slice bordered box rendered with a tileset:
+
+```c
+uiFrameInit(&frame);
+uiFrameDraw(&frame, x, y, width, height);
+uiFrameDispose(&frame);
+```
+
+The tileset is loaded from the asset system during `uiFrameInit()`. The 9 slices are arranged in the tileset grid as: top-left corner, top edge, top-right corner, left edge, fill, right edge, bottom-left, bottom edge, bottom-right.
+
+---
+
+## Loading overlay (`ui/uiloading.h`)
+
+`UI_LOADING` is a full-screen loading indicator with fade-in/fade-out transitions:
+
+```c
+uiLoadingShow(onShownCallback, user);   // fade in; calls callback when fully opaque
+uiLoadingHide(onHiddenCallback, user);  // fade out; calls callback when fully transparent
+uiLoadingUpdate(delta);                 // each frame
+uiLoadingDraw();                        // each frame, over everything
+```
+
+`UI_LOADING_FADE_DURATION` is `FIXED(0.5f)` seconds. Subscribe to `UI_LOADING.onTransitionEnd` for completion events.
+
+---
+
+## Full-box overlay (`ui/uifullbox.h`)
+
+Two global full-screen color overlays: `UI_FULLBOX_UNDER` (drawn before game content) and `UI_FULLBOX_OVER` (drawn after). Used for scene transitions (fade to black, etc.):
+
+```c
+uiFullboxTransition(
+  &UI_FULLBOX_OVER,
+  COLOR_TRANSPARENT, COLOR_BLACK,
+  FIXED(0.5f),
+  EASING_IN_OUT_CUBIC
+);
+eventSubscribe(&UI_FULLBOX_OVER.onTransitionEnd, myCallback, NULL);
+
+uiFullboxUnderDraw();   // draw under layer
+uiFullboxOverDraw();    // draw over layer
+```
+
+---
+
+## FPS counter (`ui/uifps.h`)
+
+`UIFPS` tracks a rolling average FPS. `uiFPSDraw()` renders it in the corner. Currently drawn as part of the debug HUD (not wired to an element slot).
+
+---
+
+## Player position HUD (`ui/uiplayerpos.h`)
+
+`uiplayerpos.c` draws the player's current world tile coordinates. Debug overlay, currently drawn directly in the scene render.

.claude/util.md

@@ -0,0 +1,162 @@
+# Utilities
+
+Source: `src/dusk/util/`
+
+---
+
+## String (`util/string.h`)
+
+**Always use these instead of stdlib equivalents** (`strcmp`, `strcpy`, `sprintf`, etc.).
+
+```c
+stringCopy(dest, src, destSize);           // safe strncpy; always null-terminates
+stringCompare(a, b);                       // -1 / 0 / 1
+stringEquals(a, b);                        // bool_t
+stringCompareInsensitive(a, b);            // case-insensitive -1 / 0 / 1
+stringTrim(str);                           // in-place strip leading/trailing whitespace
+stringFindLastChar(str, c);                // last occurrence pointer or NULL
+stringFormat(dest, destSize, fmt, ...);    // snprintf wrapper; pass NULL dest to get length
+stringFormatVA(dest, destSize, fmt, args); // va_list version
+
+stringIsWhitespace(c);                     // bool_t
+
+// Parse:
+stringToI32(str, &out)   → bool_t
+stringToI64(str, &out)   → bool_t
+stringToI16(str, &out)   → bool_t
+stringToU16(str, &out)   → bool_t
+stringToF32(str, &out)   → bool_t
+
+// Suffix checks:
+stringEndsWith(str, suffix)                 → bool_t
+stringEndsWithCaseInsensitive(str, suffix)  → bool_t
+stringIncludesString(haystack, needle)      → bool_t
+```
+
+---
+
+## Memory (`util/memory.h`)
+
+**Always use these instead of `malloc`/`free`/`memcpy`/`memset` directly.**
+
+```c
+memoryAllocate(size)          → void *      // malloc + tracks pointer count
+memoryAlign(alignment, size)  → void *      // aligned malloc
+memoryFree(ptr)                             // free + decrements count
+memoryReallocate(&ptr, size)               // realloc
+memoryResize(&ptr, oldSize, newSize)       // realloc + copy (safe reshape)
+memoryTrack(ptr)                           // track externally-malloc'd pointer
+
+memoryCopy(dest, src, size)                // memcpy
+memoryMove(dest, src, size)                // memmove
+memorySet(dest, value, size)               // memset
+memoryZero(dest, size)                     // memset 0
+memoryCompare(a, b, size)     → int_t      // memcmp
+
+// Useful for uploading vertex data with different source/dest layouts:
+memoryCopyInterleaved(dest, destStride, src, srcStride, elementSize, count);
+memoryCopyRangeSafe(dest, start, end, sizeMax);  // copy with bounds check
+
+memoryGetAllocatedCount()     → size_t     // current malloc'd block count
+```
+
+---
+
+## Math (`util/math.h`)
+
+```c
+mathNextPowTwo(value)    → uint32_t   // next power of two >= value
+mathMax(a, b)                         // macro
+mathMin(a, b)                         // macro
+mathClamp(x, lower, upper)            // macro
+mathAbs(amt)                          // macro
+mathModFloat(x, y)       → float_t    // always non-negative modulo
+mathLerp(a, b, t)        → float_t    // linear interpolation (floats)
+```
+
+For fixed-point lerp use `fixedLerp(a, b, t)` from `util/fixed.h`.
+
+`MATH_PI` is defined as `M_PI`.
+
+---
+
+## Fixed-point (`util/fixed.h`)
+
+Q24.8 format: 24-bit integer part, 8-bit fractional part (`int32_t`). See [architecture.md](architecture.md#fixed-point-math) for the full API.
+
+Quick reference:
+```c
+FIXED(1.5f)               // compile-time literal
+fixedFromI32(3)           // runtime int → fixed
+fixedToFloat(f)           // fixed → float (only for GL/platform APIs)
+fixedMul(a, b)            // multiplication (not just addition)
+fixedDiv(a, b)            // division
+fixedLerp(a, b, t)        // lerp where t ∈ [0, FIXED_ONE]
+```
+
+---
+
+## Array (`util/array.h`)
+
+```c
+arrayReverse(array, count, size);   // in-place reverse; size = sizeof(element)
+```
+
+---
+
+## Sort (`util/sort.h`)
+
+```c
+sortQuick(array, count, size, compare);   // quicksort
+sortBubble(array, count, size, compare);  // bubble sort (small arrays)
+sort(array, count, size, compare);        // macro alias for sortQuick
+
+// Convenience uint8_t sorter:
+sortArrayU8(array, count);
+int sortArrayU8Compare(const void *a, const void *b);   // comparator
+```
+
+`sortcompare_t` matches `qsort` comparator signature: `int (*)(const void *, const void *)`.
+
+---
+
+## Reference counting (`util/ref.h`)
+
+```c
+refInit(&ref, dataPtr, onLock, onUnlock, onAllUnlocked);
+refLock(&ref);              // increments count, calls onLock
+bool_t hit_zero = refUnlock(&ref);   // decrements; calls onAllUnlocked when 0
+```
+
+Used internally by the asset entry system to track how many callers hold a reference to a loaded asset entry.
+
+---
+
+## CRC32 (`util/crypt.h`)
+
+```c
+// One-shot:
+uint32_t crc = cryptCRC32(data, size);
+
+// Streaming:
+uint32_t acc = cryptCRC32Begin();
+cryptCRC32Update(&acc, chunk1, len1);
+cryptCRC32Update(&acc, chunk2, len2);
+uint32_t final = cryptCRC32End(acc);
+```
+
+Used by the save stream to checksum save files.
+
+---
+
+## Endian (`util/endian.h`)
+
+All serialized data (save files, asset headers) is little-endian. Convert to/from host byte order:
+
+```c
+uint32_t val = endianLittleToHost32(rawU32);
+uint16_t val = endianLittleToHost16(rawU16);
+float_t  val = endianLittleToHostFloat(rawFloat);
+```
+
+`isHostLittleEndian()` returns a bool at runtime. The compile-time defines `DUSK_PLATFORM_ENDIAN_LITTLE` / `DUSK_PLATFORM_ENDIAN_BIG` are set by `cmake/targets/<target>.cmake`.

.github/workflows/build.yml

@@ -1,11 +1,8 @@
 name: Build Dusk
 on:
   push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - main
+    tags:
+      - '*'
 jobs:
   run-tests:
     runs-on: ubuntu-latest
@@ -53,21 +50,21 @@ jobs:
           path: ./git-artifcats/Dusk
           if-no-files-found: error
 
-  build-vita:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v6
-      - name: Set up Docker
-        uses: docker/setup-docker-action@v5
-      - name: Build Vita
-        run: ./scripts/build-vita-docker.sh
-      - name: Upload Vita binary
-        uses: actions/upload-artifact@v6
-        with:
-          name: dusk-vita
-          path: build-vita/Dusk.vpk
-          if-no-files-found: error
+  # build-vita:
+  #   runs-on: ubuntu-latest
+  #   steps:
+  #     - name: Checkout repository
+  #       uses: actions/checkout@v6
+  #     - name: Set up Docker
+  #       uses: docker/setup-docker-action@v5
+  #     - name: Build Vita
+  #       run: ./scripts/build-vita-docker.sh
+  #     - name: Upload Vita binary
+  #       uses: actions/upload-artifact@v6
+  #       with:
+  #         name: dusk-vita
+  #         path: build-vita/Dusk.vpk
+  #         if-no-files-found: error
 
   build-knulli:
     runs-on: ubuntu-latest
@@ -110,6 +107,28 @@ jobs:
           path: ./git-artifcats/Dusk
           if-no-files-found: error
 
+  build-gamecube-iso:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+      - name: Set up Docker
+        uses: docker/setup-docker-action@v5
+      - name: Build GameCube ISO
+        run: ./scripts/build-gamecube-iso-docker.sh
+      - name: Copy output files.
+        run: |
+          mkdir -p ./git-artifcats/Dusk
+          cp build-gamecube-iso/Dusk-NTSC-J.iso ./git-artifcats/Dusk/Dusk-NTSC-J.iso
+          cp build-gamecube-iso/Dusk-NTSC-U.iso ./git-artifcats/Dusk/Dusk-NTSC-U.iso
+          cp build-gamecube-iso/Dusk-PAL.iso    ./git-artifcats/Dusk/Dusk-PAL.iso
+      - name: Upload GameCube ISO
+        uses: actions/upload-artifact@v6
+        with:
+          name: dusk-gamecube-iso
+          path: ./git-artifcats/Dusk
+          if-no-files-found: error
+
   build-wii:
     runs-on: ubuntu-latest
     steps:
@@ -122,12 +141,34 @@ jobs:
       - name: Copy output files.
         run: |
           mkdir -p ./git-artifcats/Dusk/apps/Dusk
-          cp build-wii/Dusk.dol ./git-artifcats/Dusk/apps/Dusk/boot.dol
+          cp build-wii/boot.dol ./git-artifcats/Dusk/apps/Dusk/boot.dol
           cp build-wii/dusk.dsk ./git-artifcats/Dusk/apps/Dusk/dusk.dsk
-          cp docker/dolphin/meta.xml ./git-artifcats/Dusk/apps/Dusk/meta.xml
+          cp build-wii/meta.xml ./git-artifcats/Dusk/apps/Dusk/meta.xml
       - name: Upload Wii binary
         uses: actions/upload-artifact@v6
         with:
           name: dusk-wii
           path: ./git-artifcats/Dusk
           if-no-files-found: error
+
+  build-wii-iso:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+      - name: Set up Docker
+        uses: docker/setup-docker-action@v5
+      - name: Build Wii ISO
+        run: ./scripts/build-wii-iso-docker.sh
+      - name: Copy output files.
+        run: |
+          mkdir -p ./git-artifcats/Dusk
+          cp build-wii-iso/Dusk-NTSC-J.iso ./git-artifcats/Dusk/Dusk-NTSC-J.iso
+          cp build-wii-iso/Dusk-NTSC-U.iso ./git-artifcats/Dusk/Dusk-NTSC-U.iso
+          cp build-wii-iso/Dusk-PAL.iso    ./git-artifcats/Dusk/Dusk-PAL.iso
+      - name: Upload Wii ISO
+        uses: actions/upload-artifact@v6
+        with:
+          name: dusk-wii-iso
+          path: ./git-artifcats/Dusk
+          if-no-files-found: error

.gitignore

@@ -106,3 +106,4 @@ yarn.lock
 /build*
 /assets/test
 /tools_old
+/assets/test.png

CLAUDE.md

@@ -0,0 +1,65 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project
+
+Dusk is a C11 RPG game targeting resource-constrained hardware (PSP, GameCube, Wii, PS Vita, Knulli handhelds) and Linux/OpenGL. All game code lives in `src/dusk/`; platform-specific backends live in `src/dusk{platform}/` (e.g. `src/duskgl/`, `src/duskpsp/`, `src/duskdolphin/`).
+
+Assets are zipped into `dusk.dsk` at build time and loaded at runtime via the asset system.
+
+## Build
+
+```bash
+# Linux (host)
+./scripts/build-linux.sh          # outputs build-linux/Dusk
+
+# Other targets (require Docker)
+./scripts/build-psp-docker.sh
+./scripts/build-gamecube-docker.sh
+./scripts/build-wii-docker.sh
+./scripts/build-knulli-docker.sh
+```
+
+Each script is a thin wrapper around:
+```bash
+cmake -S . -B build-<target> -DDUSK_TARGET_SYSTEM=<target>
+cmake --build build-<target> -- -j$(nproc)
+```
+
+## Tests
+
+```bash
+./scripts/test-linux.sh           # builds and runs all tests
+
+# Manually run a single test binary after building:
+./build-tests/test/<module>/test_<name>
+```
+
+Tests use [cmocka](https://cmocka.org/) and are only compiled when `DUSK_BUILD_TESTS=ON`. Test sources live under `test/`.
+
+## Key conventions
+
+- Use `stringCompare`, `stringCopy`, `stringEquals`, etc. from `util/string.h` — never `strcmp`, `strcpy`, and friends directly.
+- All functions that can fail return `errorret_t`. Use `errorThrow(...)`, `errorChain(call())`, and `errorOk()` macros — see `error/error.h`.
+- Positions and game-world values use `fixed_t` (Q24.8 fixed-point, `int32_t`) — not `float`. Use `FIXED(x)` for literals and the `fixedFrom*`/`fixedTo*` helpers in `util/fixed.h`.
+
+## Coding style
+
+See [`.claude/style.md`](.claude/style.md) for the full style guide: indentation, line length, naming, typedefs, defines, include order, `const` usage, assertion placement, error handling, struct initialization, and platform conditionals.
+
+## Architecture & systems
+
+| Doc | Covers |
+|---|---|
+| [`.claude/architecture.md`](.claude/architecture.md) | Platform abstraction pattern, subsystem lifecycle, error handling, code-generation pipeline |
+| [`.claude/display.md`](.claude/display.md) | Rendering pipeline: display state, screen, framebuffer, mesh, shader, texture, spritebatch, text |
+| [`.claude/input.md`](.claude/input.md) | Input actions, buttons, bindings, axis helpers, events |
+| [`.claude/asset.md`](.claude/asset.md) | Asset archive, entry lifecycle, loader types, async/sync split, low-level file I/O |
+| [`.claude/ui.md`](.claude/ui.md) | UI element system, textbox, frames, loading overlay, fullbox transitions, FPS counter |
+| [`.claude/animation.md`](.claude/animation.md) | Keyframe animation, easing functions |
+| [`.claude/systems.md`](.claude/systems.md) | Time, threading, mutex, events, console, logging, system/platform, network |
+| [`.claude/util.md`](.claude/util.md) | String, memory, math, fixed-point, array, sort, ref counting, CRC32, endian |
+| [`.claude/save.md`](.claude/save.md) | Save slots, stream serialization with CRC, locale/i18n |
+| [`.claude/rpg/index.md`](.claude/rpg/index.md) | RPG layer overview → [world](.claude/rpg/world.md), [entities](.claude/rpg/entity.md), [cutscenes](.claude/rpg/cutscene.md), [story/items](.claude/rpg/story.md) |
+| [`.claude/display-refactor.md`](.claude/display-refactor.md) | Planned render-queue refactor (Saturn port context) |

CMakeLists.txt

@@ -4,14 +4,22 @@
 # https://opensource.org/licenses/MIT
 
 # Setup
-cmake_minimum_required(VERSION 3.18)
+cmake_minimum_required(VERSION 3.13)
 
 set(CMAKE_C_STANDARD 11)
 set(CMAKE_C_STANDARD_REQUIRED ON)
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules)
+cmake_policy(SET CMP0079 NEW)
+# set(FETCHCONTENT_UPDATES_DISCONNECTED ON)
 
 option(DUSK_BUILD_TESTS "Enable tests" OFF)
 
+# Game identity — override these per-project
+set(DUSK_GAME_NAME              "Dusk"               CACHE STRING "Game display name")
+set(DUSK_GAME_AUTHOR            "YouWish"             CACHE STRING "Game author / coder")
+set(DUSK_GAME_SHORT_DESCRIPTION "Dusk game"           CACHE STRING "One-line description")
+set(DUSK_GAME_LONG_DESCRIPTION  "No description yet." CACHE STRING "Full description")
+
 # Prep cache
 set(DUSK_CACHE_TARGET "dusk-target")
 
@@ -68,10 +76,19 @@ else()
   set(DUSK_LIBRARY_TARGET_NAME "${DUSK_BINARY_TARGET_NAME}" CACHE INTERNAL ${DUSK_CACHE_TARGET})
 endif()
 
+if(NOT DEFINED DUSK_VERSION)
+  string(TIMESTAMP DUSK_VERSION "debug-%y%m%d%H%M%S")
+endif()
+
 # Definitions
 target_compile_definitions(${DUSK_LIBRARY_TARGET_NAME}
   PUBLIC
     DUSK_TARGET_SYSTEM="${DUSK_TARGET_SYSTEM}"
+    DUSK_GAME_NAME="${DUSK_GAME_NAME}"
+    DUSK_GAME_AUTHOR="${DUSK_GAME_AUTHOR}"
+    DUSK_GAME_SHORT_DESCRIPTION="${DUSK_GAME_SHORT_DESCRIPTION}"
+    DUSK_GAME_LONG_DESCRIPTION="${DUSK_GAME_LONG_DESCRIPTION}"
+    DUSK_VERSION="${DUSK_VERSION}"
 )
 
 # Toolchains

archive/old_display_system/display/CMakeLists.txt

@@ -0,0 +1,28 @@
+# Copyright (c) 2025 Dominic Masters
+#
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DUSK_LIBRARY_TARGET_NAME}
+  PUBLIC
+    display.c
+)
+
+# Subdirectories
+add_subdirectory(framebuffer)
+add_subdirectory(mesh)
+add_subdirectory(screen)
+add_subdirectory(shader)
+add_subdirectory(spritebatch)
+add_subdirectory(text)
+add_subdirectory(texture)
+
+# Color definitions
+dusk_run_python(
+  dusk_color_defs
+  tools.color.csv
+    --csv ${CMAKE_CURRENT_SOURCE_DIR}/color.csv
+    --output ${DUSK_GENERATED_HEADERS_DIR}/display/color.h
+)
+add_dependencies(${DUSK_LIBRARY_TARGET_NAME} dusk_color_defs)

archive/old_display_system/display/color.csv

@@ -0,0 +1,23 @@
+name,r,g,b,a
+black,0,0,0,1
+white,1,1,1,1
+red,1,0,0,1
+green,0,1,0,1
+blue,0,0,1,1
+yellow,1,1,0,1
+cyan,0,1,1,1
+magenta,1,0,1,1
+transparent,0,0,0,0
+transparent_white,1,1,1,0
+transparent_black,0,0,0,0
+gray,0.5,0.5,0.5,1
+light_gray,0.75,0.75,0.75,1
+dark_gray,0.25,0.25,0.25,1
+orange,1,0.65,0,1
+purple,0.5,0,0.5,1
+brown,0.6,0.4,0.2,1
+pink,1,0.75,0.8,1
+lime,0.75,1,0,1
+navy,0,0,0.5,1
+teal,0,0.5,0.5,1
+cornflower_blue,0.39,0.58,0.93,1

archive/old_display_system/display/display.c

@@ -0,0 +1,116 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "display/display.h"
+#include "display/framebuffer/framebuffer.h"
+#include "scene/scene.h"
+#include "display/spritebatch/spritebatch.h"
+#include "display/mesh/quad.h"
+#include "display/mesh/cube.h"
+#include "display/mesh/sphere.h"
+#include "display/mesh/plane.h"
+#include "display/mesh/capsule.h"
+#include "display/mesh/triprism.h"
+#include "display/screen/screen.h"
+#include "ui/ui.h"
+#include "display/text/text.h"
+#include "assert/assert.h"
+#include "util/memory.h"
+#include "util/string.h"
+#include "asset/asset.h"
+#include "display/shader/shaderlist.h"
+#include "time/time.h"
+
+display_t DISPLAY = { 0 };
+
+errorret_t displayInit(void) {
+  memoryZero(&DISPLAY, sizeof(DISPLAY));
+
+  #ifdef displayPlatformInit
+    errorChain(displayPlatformInit());
+  #endif
+  errorChain(displaySetState((displaystate_t){ .flags = 0 }));
+  errorChain(textureInit(
+    &TEXTURE_WHITE, 4, 4,
+    TEXTURE_FORMAT_RGBA, (texturedata_t){ .rgbaColors = TEXTURE_WHITE_PIXELS }
+  ));
+  errorChain(textureInit(
+    &TEXTURE_TEST, 4, 4,
+    TEXTURE_FORMAT_RGBA, (texturedata_t){ .rgbaColors = TEXTURE_TEST_PIXELS }
+  ));
+
+  // Standard meshes
+  errorChain(quadInit());
+  errorChain(cubeInit());
+  errorChain(sphereInit());
+  errorChain(planeInit());
+  errorChain(capsuleInit());
+  errorChain(triPrismInit());
+  
+  errorChain(frameBufferInitBackBuffer());
+  errorChain(spriteBatchInit());
+  errorChain(textInit());
+  errorChain(screenInit());
+
+  // Setup initial shader with default values
+
+  errorChain(shaderListInit());
+
+  errorOk();
+}
+
+errorret_t displayUpdate(void) {
+  #ifdef displayPlatformUpdate
+    errorChain(displayPlatformUpdate());
+  #endif
+
+  // Reset state
+  spriteBatchClear();
+  errorChain(frameBufferBind(NULL));
+  
+  // Bind screen and render scene
+  errorChain(screenBind());
+  frameBufferClear(
+    FRAMEBUFFER_CLEAR_COLOR | FRAMEBUFFER_CLEAR_DEPTH,
+    SCREEN.background
+  );
+
+  errorChain(sceneRender());
+
+  // Finish up
+  screenUnbind();
+  screenRender();
+
+  // Swap and return.
+  #ifdef displayPlatformSwap
+    errorChain(displayPlatformSwap());
+  #endif
+  errorOk();
+}
+
+errorret_t displaySetState(displaystate_t state) {
+  #ifdef displayPlatformSetState
+    errorChain(displayPlatformSetState(state));
+  #endif
+  errorOk();
+}
+
+errorret_t displayDispose(void) {
+  errorChain(shaderListDispose());
+  errorChain(spriteBatchDispose());
+  screenDispose();
+  errorChain(textDispose());
+  errorChain(textureDispose(&TEXTURE_WHITE));
+  errorChain(textureDispose(&TEXTURE_TEST));
+  
+  #ifdef displayPlatformDispose
+    displayPlatformDispose();
+  #endif
+
+  // For now, we just return an OK error.
+  errorOk();
+}

archive/old_display_system/display/display.h

@@ -0,0 +1,65 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "display/displayplatform.h"
+
+// Expecting some definitions to be provided
+#ifndef DUSK_DISPLAY_SIZE_DYNAMIC
+  #ifndef DUSK_DISPLAY_WIDTH
+    #error "DUSK_DISPLAY_WIDTH must be defined."
+  #endif
+  #ifndef DUSK_DISPLAY_HEIGHT
+    #error "DUSK_DISPLAY_HEIGHT must be defined"
+  #endif
+  #define DUSK_DISPLAY_WIDTH_DEFAULT DUSK_DISPLAY_WIDTH
+  #define DUSK_DISPLAY_HEIGHT_DEFAULT DUSK_DISPLAY_HEIGHT
+#else
+  #ifndef DUSK_DISPLAY_WIDTH_DEFAULT
+    #error "DUSK_DISPLAY_WIDTH_DEFAULT must be defined."
+  #endif
+  #ifndef DUSK_DISPLAY_HEIGHT_DEFAULT
+    #error "DUSK_DISPLAY_HEIGHT_DEFAULT must be defined."
+  #endif
+  #ifdef DUSK_DISPLAY_WIDTH
+    #error "DUSK_DISPLAY_WIDTH should not be defined."
+  #endif
+  #ifdef DUSK_DISPLAY_HEIGHT
+    #error "DUSK_DISPLAY_HEIGHT should not be defined."
+  #endif
+#endif
+
+// Main Display Struct, platform-speicifc
+typedef displayplatform_t display_t;
+
+extern display_t DISPLAY;
+
+/**
+ * Initializes the display system.
+ * @return An errorret_t indicating success or failure.
+ */
+errorret_t displayInit(void);
+
+/**
+ * Tells the display system to actually draw the frame.
+ * @return An errorret_t indicating success or failure.
+ */
+errorret_t displayUpdate(void);
+
+/**
+ * Sets the display state.
+ * 
+ * @param state The state to set.
+ * @return An errorret_t indicating success or failure.
+ */
+errorret_t displaySetState(displaystate_t state);
+
+/**
+ * Disposes of the display system.
+ * @return An errorret_t indicating success or failure.
+ */
+errorret_t displayDispose(void);

archive/old_display_system/display/displaystate.h

@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dusk.h"
+
+#define DISPLAY_STATE_FLAG_CULL (1 << 0)
+#define DISPLAY_STATE_FLAG_DEPTH_TEST (1 << 1)
+#define DISPLAY_STATE_FLAG_BLEND (1 << 2)
+
+typedef struct {
+  uint8_t flags;
+} displaystate_t;

archive/old_display_system/display/framebuffer/framebuffer.c

@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2025 Dominic Masters
+ * Copyright (c) 2026 Dominic Masters
  * 
  * This software is released under the MIT License.
  * https://opensource.org/licenses/MIT
@@ -40,6 +40,17 @@ uint32_t frameBufferGetHeight(const framebuffer_t *framebuffer) {
   return frameBufferPlatformGetHeight(framebuffer);
 }
 
+float_t frameBufferGetAspect(const framebuffer_t *framebuffer) {
+  #ifdef frameBufferPlatformGetAspect
+    return frameBufferPlatformGetAspect(framebuffer);
+  #endif
+  
+  uint32_t width = frameBufferGetWidth(framebuffer);
+  uint32_t height = frameBufferGetHeight(framebuffer);
+  if(height == 0) return 1.0f; // Avoid divide by zero, just return 1:1 aspect.
+  return (float_t)width / (float_t)height;
+}
+
 void frameBufferClear(const uint8_t flags, const color_t color) {
   frameBufferPlatformClear(flags, color);
 }

archive/old_display_system/display/framebuffer/framebuffer.h

@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2025 Dominic Masters
+ * Copyright (c) 2026 Dominic Masters
  * 
  * This software is released under the MIT License.
  * https://opensource.org/licenses/MIT
@@ -58,6 +58,16 @@ uint32_t frameBufferGetWidth(const framebuffer_t *framebuffer);
  */
 uint32_t frameBufferGetHeight(const framebuffer_t *framebuffer);
 
+/**
+ * Returns the aspect ratio of the framebuffer. This is ALMOST always just
+ * the width / height, however some platforms may choose to override this if
+ * they have stretched styled back buffers, e.g. 640x480 stretched.
+ * 
+ * @param framebuffer The framebuffer to get the aspect ratio of.
+ * @return The aspect ratio of the framebuffer.
+ */
+float_t frameBufferGetAspect(const framebuffer_t *framebuffer);
+
 /**
  * Binds the framebuffer for rendering, or the backbuffer if the framebuffer 
  * provided is NULL.

archive/old_display_system/display/mesh/capsule.c

@@ -119,8 +119,12 @@ void capsuleBuffer(
   {
     const float_t yTop = cy + halfHeight;
     const float_t yBot = cy - halfHeight;
-    const float_t vTop = 1.0f - (float_t)capRings       / (float_t)(2 * capRings + 1);
-    const float_t vBot = 1.0f - (float_t)(capRings + 1) / (float_t)(2 * capRings + 1);
+    const float_t vTop = (
+      1.0f - (float_t)capRings / (float_t)(2 * capRings + 1)
+    );
+    const float_t vBot = (
+      1.0f - (float_t)(capRings + 1) / (float_t)(2 * capRings + 1)
+    );
 
     for(int32_t j = 0; j < sectors; j++) {
       const float_t t1 = (float_t)j       * sectorStep;
@@ -152,8 +156,12 @@ void capsuleBuffer(
     const float_t lxz1 = radius * cosf(phi1);
     const float_t lxz2 = radius * cosf(phi2);
 
-    const float_t v1 = 1.0f - (float_t)(capRings + 1 + i)     / (float_t)(2 * capRings + 1);
-    const float_t v2 = 1.0f - (float_t)(capRings + 1 + i + 1) / (float_t)(2 * capRings + 1);
+    const float_t v1 = (
+      1.0f - (float_t)(capRings + 1 + i) / (float_t)(2 * capRings + 1)
+    );
+    const float_t v2 = (
+      1.0f - (float_t)(capRings + 1 + i + 1) / (float_t)(2 * capRings + 1)
+    );
 
     for(int32_t j = 0; j < sectors; j++) {
       const float_t t1 = (float_t)j       * sectorStep;

archive/old_display_system/display/mesh/cube.h

@@ -28,7 +28,7 @@ errorret_t cubeInit();
  * Buffers a 3D axis-aligned cube into the provided vertex array.
  * Writes CUBE_VERTEX_COUNT vertices (6 faces x 6 vertices, CCW winding).
  *
- * @param vertices The vertex array to buffer into (must hold CUBE_VERTEX_COUNT).
+ * @param vertices The vertex array to buffer into.
  * @param min The minimum XYZ corner of the cube.
  * @param max The maximum XYZ corner of the cube.
  * @param color The color applied to all vertices.

archive/old_display_system/display/mesh/mesh.c

@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2025 Dominic Masters
+ * Copyright (c) 2026 Dominic Masters
  * 
  * This software is released under the MIT License.
  * https://opensource.org/licenses/MIT
@@ -34,10 +34,14 @@ errorret_t meshFlush(
   #ifdef meshFlushPlatform
     assertNotNull(mesh, "Mesh cannot be NULL");
     assertTrue(vertexOffset >= 0, "Vertex offset must be non-negative.");
-    assertTrue(vertexCount == -1 || vertexCount > 0, "Vertex count incorrect.");
+    assertTrue(
+      vertexCount == -1 || vertexCount > 0, "Vertex count incorrect."
+    );
 
     int32_t vertCount = meshGetVertexCount(mesh);
-    assertTrue(vertexOffset < (vertCount - 1), "Need at least one vert to draw");
+    assertTrue(
+      vertexOffset < (vertCount - 1), "Need at least one vert to draw"
+    );
 
     int32_t drawCount = vertexCount;
     if(vertexCount == -1) {

archive/old_display_system/display/mesh/mesh.h

@@ -1,4 +1,4 @@
-// Copyright (c) 2025 Dominic Masters
+// Copyright (c) 2026 Dominic Masters
 // 
 // This software is released under the MIT License.
 // https://opensource.org/licenses/MIT

archive/old_display_system/display/mesh/plane.c

@@ -74,7 +74,7 @@ void planeBuffer(
   const float_t u0 = uvMin[0], u1 = uvMax[0];
   const float_t v0 = uvMin[1], v1 = uvMax[1];
 
-  switch (axis) {
+  switch(axis) {
     case PLANE_AXIS_XY: {
       /* Flat in XY at z = min[2]; spans X and Y. */
       const float_t z = min[2];

archive/old_display_system/display/mesh/quad.c

@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2025 Dominic Masters
+ * Copyright (c) 2026 Dominic Masters
  * 
  * This software is released under the MIT License.
  * https://opensource.org/licenses/MIT

archive/old_display_system/display/mesh/quad.h

@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2025 Dominic Masters
+ * Copyright (c) 2026 Dominic Masters
  * 
  * This software is released under the MIT License.
  * https://opensource.org/licenses/MIT

archive/old_display_system/display/mesh/triprism.h

@@ -9,12 +9,6 @@
 #include "display/mesh/mesh.h"
 #include "display/color.h"
 
-/**
- * Vertex layout:
- *   2 triangular end-caps  (3 verts each) = 6
- *   3 rectangular side faces (6 verts each) = 18
- *   Total = 24
- */
 #define TRIPRISM_VERTEX_COUNT 24
 #define TRIPRISM_PRIMITIVE_TYPE MESH_PRIMITIVE_TYPE_TRIANGLES
 
@@ -35,7 +29,7 @@ errorret_t triPrismInit();
  * the prism is extruded along the Z axis between minZ and maxZ.
  * Writes TRIPRISM_VERTEX_COUNT (24) vertices (CCW winding).
  *
- * @param vertices  Vertex array to write into (must hold TRIPRISM_VERTEX_COUNT).
+ * @param vertices  Vertex array to write into.
  * @param x0,y0 First triangle vertex (XY).
  * @param x1,y1 Second triangle vertex (XY).
  * @param x2,y2 Third triangle vertex (XY).

archive/old_display_system/display/screen/screen.c

@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2025 Dominic Masters
+ * Copyright (c) 2026 Dominic Masters
  * 
  * This software is released under the MIT License.
  * https://opensource.org/licenses/MIT
@@ -52,7 +52,7 @@ errorret_t screenBind() {
       // Screen mode backbuffer uses the full display size
       SCREEN.width = frameBufferGetWidth(FRAMEBUFFER_BOUND);
       SCREEN.height = frameBufferGetHeight(FRAMEBUFFER_BOUND);
-      SCREEN.aspect = (float_t)SCREEN.width / (float_t)SCREEN.height;
+      SCREEN.aspect = frameBufferGetAspect(FRAMEBUFFER_BOUND);
 
       // No needd for a framebuffer.
       #ifdef DUSK_DISPLAY_SIZE_DYNAMIC
@@ -100,8 +100,7 @@ errorret_t screenBind() {
         int32_t fbWidth, fbHeight;
         fbWidth = frameBufferGetWidth(FRAMEBUFFER_BOUND);
         fbHeight = frameBufferGetHeight(FRAMEBUFFER_BOUND);
-
-        float_t currentAspect = (float_t)fbWidth / (float_t)fbHeight;
+        float_t currentAspect = frameBufferGetAspect(FRAMEBUFFER_BOUND);
         if(currentAspect == SCREEN.aspectRatio.ratio) {
           // No need to use framebuffer.
           SCREEN.width = fbWidth;
@@ -129,13 +128,14 @@ errorret_t screenBind() {
         if(SCREEN.framebufferReady) {
           // Is current framebuffer the correct size?
           int32_t curFbWidth, curFbHeight;
+          float_t curFbAspect = frameBufferGetAspect(&SCREEN.framebuffer);
           curFbWidth = frameBufferGetWidth(&SCREEN.framebuffer);
           curFbHeight = frameBufferGetHeight(&SCREEN.framebuffer);
           if(curFbWidth == newFbWidth && curFbHeight == newFbHeight) {
             // Correct size, nothing to do.
             SCREEN.width = newFbWidth;
             SCREEN.height = newFbHeight;
-            SCREEN.aspect = (float_t)SCREEN.width / (float_t)SCREEN.height;
+            SCREEN.aspect = curFbAspect;
             errorChain(frameBufferBind(&SCREEN.framebuffer));
             errorOk();
           }

archive/old_display_system/display/screen/screen.h

@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2025 Dominic Masters
+ * Copyright (c) 2026 Dominic Masters
  * 
  * This software is released under the MIT License.
  * https://opensource.org/licenses/MIT

archive/old_display_system/display/shader/CMakeLists.txt

@@ -7,5 +7,6 @@
 target_sources(${DUSK_LIBRARY_TARGET_NAME}
   PUBLIC
     shader.c
+    shaderlist.c
     shaderunlit.c
 )

archive/old_display_system/display/shader/shader.c

@@ -8,6 +8,7 @@
 #include "shader.h"
 #include "shadermaterial.h"
 #include "assert/assert.h"
+#include "log/log.h"
 
 shader_t *bound = NULL;
 
@@ -57,6 +58,7 @@ errorret_t shaderSetColor(
 ) {
   assertNotNull(shader, "Shader cannot be null");
   assertStrLenMin(name, 1, "Uniform name cannot be empty");
+  assertTrue(bound == shader, "Shader must be bound.");
   errorChain(shaderSetColorPlatform(shader, name, color));
   errorOk();
 }

archive/old_display_system/display/shader/shaderlist.c

@@ -0,0 +1,87 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ *
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "shaderlist.h"
+#include "display/screen/screen.h"
+#include "assert/assert.h"
+
+shaderlistdef_t SHADER_LIST_DEFS[SHADER_LIST_SHADER_COUNT] = {
+  [SHADER_LIST_SHADER_UNLIT] = {
+    .shader = &SHADER_UNLIT,
+    .definition = &SHADER_UNLIT_DEFINITION
+  },
+};
+
+errorret_t shaderListInit() {
+  mat4 view, proj, model;
+  glm_lookat(
+    (vec3){ 0.0f, 0.0f, 1.0f },
+    (vec3){ 0.0f, 0.0f, 0.0f },
+    (vec3){ 0.0f, 1.0f, 0.0f },
+    view
+  );
+
+  glm_perspective(
+    glm_rad(45.0f),
+    SCREEN.aspect,
+    0.1f,
+    100.0f,
+    proj
+  );
+
+  glm_mat4_identity(model);
+
+  for(shaderlistshader_t i = 0; i < SHADER_LIST_SHADER_COUNT; i++) {
+    if(i == SHADER_LIST_SHADER_NULL) {
+      continue;
+    }
+
+    assertNotNull(
+      SHADER_LIST_DEFS[i].shader, "Shader cannot be null"
+    );
+    assertNotNull(
+      SHADER_LIST_DEFS[i].definition, "Shader definition cannot be null"
+    );
+
+    errorChain(shaderInit(
+      SHADER_LIST_DEFS[i].shader, SHADER_LIST_DEFS[i].definition
+    ));
+    errorChain(shaderBind(SHADER_LIST_DEFS[i].shader));
+    errorChain(shaderSetMatrix(
+      SHADER_LIST_DEFS[i].shader, SHADER_UNLIT_PROJECTION, proj
+    ));
+    errorChain(shaderSetMatrix(
+      SHADER_LIST_DEFS[i].shader, SHADER_UNLIT_VIEW, view
+    ));
+    errorChain(shaderSetMatrix(
+      SHADER_LIST_DEFS[i].shader, SHADER_UNLIT_MODEL, model
+    ));
+    errorChain(shaderSetTexture(
+      SHADER_LIST_DEFS[i].shader, SHADER_UNLIT_TEXTURE, NULL
+    ));
+    errorChain(shaderSetColor(
+      SHADER_LIST_DEFS[i].shader, SHADER_UNLIT_COLOR, COLOR_WHITE
+    ));
+  }
+
+  errorOk();
+}
+
+errorret_t shaderListDispose(void) {
+  for(shaderlistshader_t i = 0; i < SHADER_LIST_SHADER_COUNT; i++) {
+    if(i == SHADER_LIST_SHADER_NULL) {
+      continue;
+    }
+
+    assertNotNull(
+      SHADER_LIST_DEFS[i].shader, "Shader cannot be null"
+    );
+
+    errorChain(shaderDispose(SHADER_LIST_DEFS[i].shader));
+  }
+  errorOk();
+}

archive/old_display_system/display/shader/shaderlist.h

@@ -0,0 +1,40 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ *
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "display/shader/shader.h"
+#include "display/shader/shaderunlit.h"
+
+typedef enum {
+  SHADER_LIST_SHADER_NULL,
+
+  SHADER_LIST_SHADER_UNLIT,
+  
+  SHADER_LIST_SHADER_COUNT
+} shaderlistshader_t;
+
+typedef struct {
+  shader_t *shader;
+  shaderdefinition_t *definition;
+} shaderlistdef_t;
+
+extern shaderlistdef_t SHADER_LIST_DEFS[SHADER_LIST_SHADER_COUNT];
+
+/**
+ * Initializes all default shaders and uploads the initial view, projection,
+ * and model matrices to each.
+ *
+ * @return Error state.
+ */
+errorret_t shaderListInit();
+
+/**
+ * Disposes all default shaders.
+ *
+ * @return Error state.
+ */
+errorret_t shaderListDispose(void);

archive/old_display_system/display/shader/shadermaterial.h

@@ -6,7 +6,7 @@
  */
 
 #pragma once
-#include "display/shader/shaderunlit.h"
+#include "display/shader/shaderlist.h"
 
 typedef union shadermaterial_u {
   shaderunlitmaterial_t unlit;

archive/old_display_system/display/spritebatch/spritebatch.c

@@ -0,0 +1,179 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ *
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "spritebatch.h"
+#include "assert/assert.h"
+#include "util/memory.h"
+#include "util/math.h"
+#include "display/shader/shadermaterial.h"
+
+meshvertex_t SPRITEBATCH_VERTICES[SPRITEBATCH_VERTEX_COUNT];
+spritebatch_t SPRITEBATCH;
+
+errorret_t spriteBatchInit() {
+  memoryZero(&SPRITEBATCH, sizeof(spritebatch_t));
+  errorChain(meshInit(
+    &SPRITEBATCH.mesh,
+    QUAD_PRIMITIVE_TYPE,
+    SPRITEBATCH_VERTEX_COUNT,
+    SPRITEBATCH_VERTICES
+  ));
+  errorOk();
+}
+
+errorret_t spriteBatchBuffer(
+  const spritebatchsprite_t *sprites,
+  const uint32_t count,
+  shader_t *shader,
+  const shadermaterial_t material
+) {
+  assertNotNull(sprites, "Sprites cannot be null");
+  assertTrue(count > 0, "Count must be greater than zero");
+  assertNotNull(shader, "Shader cannot be null");
+
+  // Did the shader or material data change?
+  if(shader != SPRITEBATCH.shader) {
+    errorChain(spriteBatchFlush());
+    SPRITEBATCH.shader = shader;
+    SPRITEBATCH.material = material;
+  } else if(memoryCompare(
+    &material, &SPRITEBATCH.material, sizeof(shadermaterial_t)
+  ) != 0) {
+    // Did the material data change?
+    errorChain(spriteBatchFlush());
+    SPRITEBATCH.shader = shader;
+    SPRITEBATCH.material = material;
+  }
+
+  // Buffer the vertices.
+  uint32_t remaining = count;
+  do {
+    uint32_t spritesBeforeFlush = (
+      SPRITEBATCH_SPRITES_MAX_PER_FLUSH - SPRITEBATCH.spriteCount
+    );
+
+    if(spritesBeforeFlush == 0) {
+      // Flush if we have no capacity before flushing.
+      errorChain(spriteBatchFlush());
+      spritesBeforeFlush = SPRITEBATCH_SPRITES_MAX_PER_FLUSH;
+    }
+
+    // Many we buffering?
+    const uint32_t batchCount = mathMin(
+      remaining,
+      spritesBeforeFlush
+    );
+
+    // Destination
+    meshvertex_t *v = &SPRITEBATCH_VERTICES[
+      (SPRITEBATCH.spriteCount + (SPRITEBATCH.spriteFlush *
+      SPRITEBATCH_SPRITES_MAX_PER_FLUSH)) * QUAD_VERTEX_COUNT
+    ];
+
+    // Buffer to the mesh vertices.
+    spriteBatchBufferToMesh(
+      sprites, batchCount, v, batchCount * QUAD_VERTEX_COUNT
+    );
+    SPRITEBATCH.spriteCount += batchCount;
+    remaining -= batchCount;
+  } while(remaining > 0);
+  
+  errorOk();
+}
+
+void spriteBatchBufferToMesh(
+  const spritebatchsprite_t *sprites,
+  const uint32_t count,
+  meshvertex_t *vertices,
+  const uint32_t verticesSize
+) {
+  assertNotNull(sprites, "Sprites cannot be null");
+  assertTrue(count > 0, "Count must be greater than zero");
+  assertNotNull(vertices, "Vertices cannot be null");
+  assertTrue(
+    verticesSize >= count * QUAD_VERTEX_COUNT, "Vertices array too small"
+  );
+  
+  for(uint32_t i = 0; i < count; i++ ){
+    spritebatchsprite_t sprite = sprites[i];
+    meshvertex_t *v = &vertices[i * QUAD_VERTEX_COUNT];
+    
+    // Buffer the quad
+    v[0].pos[0] = sprite.min[0];
+    v[0].pos[1] = sprite.min[1];
+    v[0].pos[2] = sprite.min[2];
+    v[0].uv[0] = sprite.uvMin[0];
+    v[0].uv[1] = sprite.uvMin[1];
+
+    v[1].pos[0] = sprite.max[0];
+    v[1].pos[1] = sprite.min[1];
+    v[1].pos[2] = sprite.min[2];
+    v[1].uv[0] = sprite.uvMax[0];
+    v[1].uv[1] = sprite.uvMin[1];
+
+    v[2].pos[0] = sprite.max[0];
+    v[2].pos[1] = sprite.max[1];
+    v[2].pos[2] = sprite.max[2];
+    v[2].uv[0] = sprite.uvMax[0];
+    v[2].uv[1] = sprite.uvMax[1];
+
+    v[3].pos[0] = sprite.min[0];
+    v[3].pos[1] = sprite.min[1];
+    v[3].pos[2] = sprite.min[2];
+    v[3].uv[0] = sprite.uvMin[0];
+    v[3].uv[1] = sprite.uvMin[1];
+
+    v[4].pos[0] = sprite.max[0];
+    v[4].pos[1] = sprite.max[1];
+    v[4].pos[2] = sprite.max[2];
+    v[4].uv[0] = sprite.uvMax[0];
+    v[4].uv[1] = sprite.uvMax[1];
+
+    v[5].pos[0] = sprite.min[0];
+    v[5].pos[1] = sprite.max[1];
+    v[5].pos[2] = sprite.max[2];
+    v[5].uv[0] = sprite.uvMin[0];
+    v[5].uv[1] = sprite.uvMax[1];
+  }
+}
+
+void spriteBatchClear() {
+  SPRITEBATCH.spriteCount = 0;
+  SPRITEBATCH.spriteFlush = 0;
+  SPRITEBATCH.shader = NULL;
+  memoryZero(&SPRITEBATCH.material, sizeof(shadermaterial_t));
+}
+
+errorret_t spriteBatchFlush() {
+  if(SPRITEBATCH.spriteCount == 0) {
+    errorOk();
+  }
+
+  size_t vertexCount = QUAD_VERTEX_COUNT * SPRITEBATCH.spriteCount;
+  size_t vertexOffset = (
+    SPRITEBATCH.spriteFlush * SPRITEBATCH_SPRITES_MAX_PER_FLUSH *
+    QUAD_VERTEX_COUNT
+  );
+
+  errorChain(shaderBind(SPRITEBATCH.shader));
+  errorChain(shaderSetMaterial(SPRITEBATCH.shader, &SPRITEBATCH.material));
+  errorChain(meshFlush(&SPRITEBATCH.mesh, vertexOffset, vertexCount));
+  errorChain(meshDraw(&SPRITEBATCH.mesh, vertexOffset, vertexCount));
+
+  SPRITEBATCH.spriteFlush++;
+  if(SPRITEBATCH.spriteFlush >= SPRITEBATCH_FLUSH_COUNT) {
+    SPRITEBATCH.spriteFlush = 0;
+  }
+  SPRITEBATCH.spriteCount = 0;
+
+  errorOk();
+}
+
+errorret_t spriteBatchDispose() {
+  errorChain(meshDispose(&SPRITEBATCH.mesh));
+  errorOk();
+}

archive/old_display_system/display/spritebatch/spritebatch.h

@@ -0,0 +1,107 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ *
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "display/mesh/quad.h"
+#include "display/texture/texture.h"
+#include "display/shader/shadermaterial.h"
+
+#define SPRITEBATCH_SPRITES_MAX 512
+#define SPRITEBATCH_VERTEX_COUNT (SPRITEBATCH_SPRITES_MAX * QUAD_VERTEX_COUNT)
+#define SPRITEBATCH_FLUSH_COUNT 16
+#define SPRITEBATCH_SPRITES_MAX_PER_FLUSH (\
+  SPRITEBATCH_SPRITES_MAX / SPRITEBATCH_FLUSH_COUNT \
+)
+
+typedef struct {
+  vec3 min;
+  vec3 max;
+  vec2 uvMin;
+  vec2 uvMax;
+} spritebatchsprite_t;
+
+typedef struct {
+  mesh_t mesh;
+  int32_t spriteCount;
+  int32_t spriteFlush;
+
+  shader_t *shader;
+  shadermaterial_t material;
+} spritebatch_t;
+
+// Have to define these separately because of alignment on certain platforms.
+extern meshvertex_t SPRITEBATCH_VERTICES[SPRITEBATCH_VERTEX_COUNT];
+extern spritebatch_t SPRITEBATCH;
+
+/**
+ * Initializes the global sprite batch and its internal mesh buffer.
+ *
+ * @return Error state.
+ */
+errorret_t spriteBatchInit();
+
+/**
+ * Lowest-level buffer function. Writes sprites into the internal vertex buffer.
+ * Flushes automatically when the per-flush capacity is reached. Does not
+ * modify material state - call spriteBatchSetState or use a high-level push
+ * function before buffering.
+ *
+ * @param sprites Pointer to the sprite array.
+ * @param count Number of sprites to buffer.
+ * @param shader Shader to use when flushing.
+ * @param material Material information passed to the shader when flushing.
+ * @return Error state.
+ */
+errorret_t spriteBatchBuffer(
+  const spritebatchsprite_t *sprites,
+  const uint32_t count,
+  shader_t *shader,
+  const shadermaterial_t material
+);
+
+/**
+ * Buffers an array of sprites to a given array of mesh vertices. This is the
+ * internal method that is used to buffer to the internal spritebatch mesh, but
+ * you can use it to achieve sprite buffering to a mesh you own.
+ * 
+ * verticesSize is the size of the vertices array, we use this to ensure no 
+ * buffer overflows.
+ * 
+ * @param sprites Pointer to the sprite array.
+ * @param count Number of sprites to buffer.
+ * @param vertices Pointer to the vertex array to write to.
+ * @param verticesSize Size of the vertex array, in number of vertices.
+ */
+void spriteBatchBufferToMesh(
+  const spritebatchsprite_t *sprites,
+  const uint32_t count,
+  meshvertex_t *vertices,
+  const uint32_t verticesSize
+);
+
+/**
+ * Resets sprite and flush counters and clears the current material state.
+ * Calling spriteBatchFlush after this renders nothing.
+ */
+void spriteBatchClear();
+
+/**
+ * Uploads and draws all buffered sprites. If a material type has been set via
+ * spriteBatchSetState or spriteBatchCheckState, the shader is bound and the
+ * material is applied first. If matType is NULL the caller is responsible for
+ * having the correct shader already bound. Does nothing if the buffer is empty.
+ *
+ * @return Error state.
+ */
+errorret_t spriteBatchFlush();
+
+/**
+ * Disposes of the sprite batch and frees its internal mesh buffer.
+ *
+ * @return Error state.
+ */
+errorret_t spriteBatchDispose();

archive/old_display_system/display/text/font.h

@@ -0,0 +1,15 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ *
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "display/texture/texture.h"
+#include "display/texture/tileset.h"
+
+typedef struct {
+  texture_t *texture;
+  tileset_t *tileset;
+} font_t;

archive/old_display_system/display/text/text.c

@@ -0,0 +1,148 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ *
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "text.h"
+#include "assert/assert.h"
+#include "util/memory.h"
+#include "display/spritebatch/spritebatch.h"
+#include "asset/asset.h"
+#include "asset/loader/display/assettextureloader.h"
+#include "asset/loader/display/assettilesetloader.h"
+#include "display/shader/shaderunlit.h"
+
+font_t FONT_DEFAULT;
+
+errorret_t textInit(void) {
+  assetloaderinput_t input = { .texture = TEXTURE_FORMAT_RGBA };
+  assetentry_t *entryTexture = assetLock(
+    "ui/minogram.png", ASSET_LOADER_TYPE_TEXTURE, &input
+  );
+  assetentry_t *entryTileset = assetLock(
+    "ui/minogram.dtf", ASSET_LOADER_TYPE_TILESET, NULL
+  );
+  errorChain(assetRequireLoaded(entryTexture));
+  errorChain(assetRequireLoaded(entryTileset));
+
+  FONT_DEFAULT.texture = &entryTexture->data.texture;
+  FONT_DEFAULT.tileset = &entryTileset->data.tileset;
+  errorOk();
+}
+
+errorret_t textDispose(void) {
+  FONT_DEFAULT.texture = NULL;
+  FONT_DEFAULT.tileset = NULL;
+  assetUnlock("ui/minogram.png");
+  assetUnlock("ui/minogram.dtf");
+  errorOk();
+}
+
+spritebatchsprite_t textGetSprite(
+  const vec2 pos, const char_t c, const font_t *font
+) {
+  assertNotNull(font, "Font cannot be NULL");
+
+  // Change char from ASCII to a tile index.
+  int32_t tileIndex = (int32_t)(c) - TEXT_CHAR_START;
+  if(tileIndex < 0 || tileIndex >= font->tileset->tileCount) {
+    tileIndex = ((int32_t)'@') - TEXT_CHAR_START;
+  }
+  assertTrue(
+    tileIndex >= 0 && tileIndex <= font->tileset->tileCount,
+    "Character is out of bounds for font tiles"
+  );
+
+  // Create sprite.
+  vec4 uv;
+  tilesetTileGetUV(font->tileset, tileIndex, uv);
+
+  spritebatchsprite_t sprite;
+  sprite.min[0] = pos[0];
+  sprite.min[1] = pos[1];
+  sprite.min[2] = 0.0f;
+  sprite.max[0] = pos[0] + font->tileset->tileWidth;
+  sprite.max[1] = pos[1] + font->tileset->tileHeight;
+  sprite.max[2] = 0.0f;
+  sprite.uvMin[0] = uv[0];
+  sprite.uvMin[1] = uv[1];
+  sprite.uvMax[0] = uv[2];
+  sprite.uvMax[1] = uv[3];
+  return sprite;
+}
+
+errorret_t textDraw(
+  const float_t x,
+  const float_t y,
+  const char_t *text,
+  const color_t color,
+  font_t *font
+) {
+  assertNotNull(text, "Text cannot be NULL");
+
+  spritebatchsprite_t sprite;
+  shadermaterial_t material = {
+    .unlit = {
+      .color = color,
+      .texture = font->texture
+    }
+  };
+
+  float_t posX = x;
+  float_t posY = y;
+
+  char_t c;
+  int32_t i = 0;
+  while((c = text[i++]) != '\0') {
+    if(c == '\n') {
+      posX = x;
+      posY += font->tileset->tileHeight;
+      continue;
+    }
+
+    if(c == ' ') {
+      posX += font->tileset->tileWidth;
+      continue;
+    }
+
+    sprite = textGetSprite((vec2){posX, posY}, c, font);
+    errorChain(spriteBatchBuffer(&sprite, 1, &SHADER_UNLIT, material));
+    posX += font->tileset->tileWidth;
+  }
+  errorOk();
+}
+
+void textMeasure(
+  const char_t *text,
+  const font_t *font,
+  int32_t *outWidth,
+  int32_t *outHeight
+) {
+  assertNotNull(text, "Text cannot be NULL");
+  assertNotNull(outWidth, "Output width pointer cannot be NULL");
+  assertNotNull(outHeight, "Output height pointer cannot be NULL");
+
+  int32_t width = 0;
+  int32_t height = font->tileset->tileHeight;
+  int32_t lineWidth = 0;
+
+  char_t c;
+  int32_t i = 0;
+  while((c = text[i++]) != '\0') {
+    if(c == '\n') {
+      if(lineWidth > width) width = lineWidth;
+      lineWidth = 0;
+      height += font->tileset->tileHeight;
+      continue;
+    }
+
+    lineWidth += font->tileset->tileWidth;
+  }
+
+  if(lineWidth > width) width = lineWidth;
+
+  *outWidth = width;
+  *outHeight = height;
+}

archive/old_display_system/display/text/text.h

@@ -7,13 +7,12 @@
 
 #pragma once
 #include "asset/asset.h"
-#include "display/texture/texture.h"
-#include "display/texture/tileset.h"
+#include "display/text/font.h"
+#include "display/spritebatch/spritebatch.h"
 
 #define TEXT_CHAR_START '!'
 
-extern texture_t DEFAULT_FONT_TEXTURE;
-extern tileset_t DEFAULT_FONT_TILESET;
+extern font_t FONT_DEFAULT;
 
 /**
  * Initializes the text system.
@@ -30,25 +29,17 @@ errorret_t textInit(void);
 errorret_t textDispose(void);
 
 /**
- * Draws a single character at the specified position.
+ * Builds a sprite for a single character at the given position.
  *
- * @param x The x-coordinate to draw the character at.
- * @param y The y-coordinate to draw the character at.
- * @param c The character to draw.
- * @param color The color to draw the character in.
- * @param tileset Font tileset to use for rendering.
- * @param texture Texture containing the font tileset image.
- * @return Either an error or success result.
+ * @param pos The (x, y) position of the character in screen/world space.
+ * @param c The character to build a sprite for.
+ * @param font Font to use for tile lookup.
+ * @return The populated sprite ready for spriteBatchBuffer.
  */
-errorret_t textDrawChar(
-  const float_t x,
-  const float_t y,
+spritebatchsprite_t textGetSprite(
+  const vec2 pos,
   const char_t c,
-  #if MESH_ENABLE_COLOR
-    const color_t color,
-  #endif
-  const tileset_t *tileset,
-  texture_t *texture
+  const font_t *font
 );
 
 /**
@@ -58,32 +49,28 @@ errorret_t textDrawChar(
  * @param y The y-coordinate to draw the text at.
  * @param text The null-terminated string of text to draw.
  * @param color The color to draw the text in.
- * @param tileset Font tileset to use for rendering.
- * @param texture Texture containing the font tileset image.
+ * @param font Font to use for rendering.
  * @return Either an error or success result.
  */
 errorret_t textDraw(
   const float_t x,
   const float_t y,
   const char_t *text,
-  #if MESH_ENABLE_COLOR
   const color_t color,
-  #endif
-  const tileset_t *tileset,
-  texture_t *texture
+  font_t *font
 );
 
 /**
  * Measures the width and height of the given text string when rendered.
  *
  * @param text The null-terminated string of text to measure.
- * @param tileset Font tileset to use for measurement.
+ * @param font Font to use for measurement.
  * @param outWidth Pointer to store the measured width in pixels.
  * @param outHeight Pointer to store the measured height in pixels.
  */
 void textMeasure(
   const char_t *text,
-  const tileset_t *tileset,
+  const font_t *font,
   int32_t *outWidth,
   int32_t *outHeight
 );

archive/old_display_system/display/texture/texture.c

@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2025 Dominic Masters
+ * Copyright (c) 2026 Dominic Masters
  * 
  * This software is released under the MIT License.
  * https://opensource.org/licenses/MIT
@@ -19,6 +19,14 @@ color_t TEXTURE_WHITE_PIXELS[4*4] = {
   COLOR_WHITE, COLOR_WHITE, COLOR_WHITE, COLOR_WHITE,
 };
 
+texture_t TEXTURE_TEST;
+color_t TEXTURE_TEST_PIXELS[4*4] = {
+  COLOR_BLACK, COLOR_MAGENTA, COLOR_BLACK, COLOR_MAGENTA,
+  COLOR_MAGENTA, COLOR_BLACK, COLOR_MAGENTA, COLOR_BLACK,
+  COLOR_BLACK, COLOR_MAGENTA, COLOR_BLACK, COLOR_MAGENTA,
+  COLOR_MAGENTA, COLOR_BLACK, COLOR_MAGENTA, COLOR_BLACK,
+};
+
 errorret_t textureInit(
   texture_t *texture,
   const int32_t width,

archive/old_display_system/display/texture/texture.h

@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2025 Dominic Masters
+ * Copyright (c) 2026 Dominic Masters
  * 
  * This software is released under the MIT License.
  * https://opensource.org/licenses/MIT
@@ -30,6 +30,8 @@ typedef union texturedata_u {
 
 extern texture_t TEXTURE_WHITE;
 extern color_t TEXTURE_WHITE_PIXELS[4*4];
+extern texture_t TEXTURE_TEST;
+extern color_t TEXTURE_TEST_PIXELS[4*4];
 
 /**
  * Initializes a texture.

archive/old_display_system/display/texture/tileset.c

@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2025 Dominic Masters
+ * Copyright (c) 2026 Dominic Masters
  * 
  * This software is released under the MIT License.
  * https://opensource.org/licenses/MIT

archive/old_display_system/display/texture/tileset.h

@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2025 Dominic Masters
+ * Copyright (c) 2026 Dominic Masters
  * 
  * This software is released under the MIT License.
  * https://opensource.org/licenses/MIT

archive/rpg/rpgcamera.h

@@ -16,7 +16,6 @@ typedef enum {
 
 typedef struct {
   rpgcameramode_t mode;
-
   union {
     worldpos_t free;
     struct {

assets/init.js

@@ -0,0 +1,21 @@
+// Copyright (c) 2026 Dominic Masters
+//
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+const platformNames = {
+  [System.PLATFORM_LINUX]:    'Linux',
+  [System.PLATFORM_KNULLI]:   'Knulli',
+  [System.PLATFORM_PSP]:      'PSP',
+  [System.PLATFORM_GAMECUBE]: 'GameCube',
+  [System.PLATFORM_WII]:      'Wii',
+};
+
+Console.print('Platform: ' + (platformNames[System.platform] || 'Unknown'));
+
+UIFullboxOver.setColor(Color.BLACK);
+
+requireAsync('testscene.js').then(Scene.set).catch(err => {
+  Console.print('Error loading scene: ' + err);
+  Engine.exit();
+});

assets/init.lua

@@ -1,76 +0,0 @@
-module('input')
-module('platform')
-module('scene')
-module('locale')
-
--- Default Input bindings.
-if PSP then
-  inputBind("up", INPUT_ACTION_UP)
-  inputBind("down", INPUT_ACTION_DOWN)
-  inputBind("left", INPUT_ACTION_LEFT)
-  inputBind("right", INPUT_ACTION_RIGHT)
-  inputBind("accept", INPUT_ACTION_ACCEPT)
-  inputBind("cancel", INPUT_ACTION_CANCEL)
-  inputBind("select", INPUT_ACTION_RAGEQUIT)
-  inputBind("lstick_up", INPUT_ACTION_UP)
-  inputBind("lstick_down", INPUT_ACTION_DOWN)
-  inputBind("lstick_left", INPUT_ACTION_LEFT)
-  inputBind("lstick_right", INPUT_ACTION_RIGHT)
-
-elseif DOLPHIN then
-  inputBind("up", INPUT_ACTION_UP)
-  inputBind("down", INPUT_ACTION_DOWN)
-  inputBind("left", INPUT_ACTION_LEFT)
-  inputBind("right", INPUT_ACTION_RIGHT)
-  inputBind("b", INPUT_ACTION_CANCEL)
-  inputBind("a", INPUT_ACTION_ACCEPT)
-  inputBind("z", INPUT_ACTION_RAGEQUIT)
-  inputBind("lstick_up", INPUT_ACTION_UP)
-  inputBind("lstick_down", INPUT_ACTION_DOWN)
-  inputBind("lstick_left", INPUT_ACTION_LEFT)
-  inputBind("lstick_right", INPUT_ACTION_RIGHT)
-
-elseif LINUX then
-  if INPUT_KEYBOARD then
-    inputBind("w", INPUT_ACTION_UP)
-    inputBind("s", INPUT_ACTION_DOWN)
-    inputBind("a", INPUT_ACTION_LEFT)
-    inputBind("d", INPUT_ACTION_RIGHT)
-
-    inputBind("left", INPUT_ACTION_LEFT)
-    inputBind("right", INPUT_ACTION_RIGHT)
-    inputBind("up", INPUT_ACTION_UP)
-    inputBind("down", INPUT_ACTION_DOWN)
-
-    inputBind("enter", INPUT_ACTION_ACCEPT)
-    inputBind("e", INPUT_ACTION_ACCEPT)
-    
-    inputBind("q", INPUT_ACTION_CANCEL)
-    
-    inputBind("escape", INPUT_ACTION_RAGEQUIT)
-  end
-
-  if INPUT_GAMEPAD then
-    inputBind("gamepad_up", INPUT_ACTION_UP)
-    inputBind("gamepad_down", INPUT_ACTION_DOWN)
-    inputBind("gamepad_left", INPUT_ACTION_LEFT)
-    inputBind("gamepad_right", INPUT_ACTION_RIGHT)
-
-    inputBind("gamepad_a", INPUT_ACTION_ACCEPT)
-    inputBind("gamepad_b", INPUT_ACTION_CANCEL)
-    inputBind("gamepad_back", INPUT_ACTION_RAGEQUIT)
-
-    inputBind("gamepad_lstick_up", INPUT_ACTION_UP)
-    inputBind("gamepad_lstick_down", INPUT_ACTION_DOWN)
-    inputBind("gamepad_lstick_left", INPUT_ACTION_LEFT)
-    inputBind("gamepad_lstick_right", INPUT_ACTION_RIGHT)
-  end
-
-  if INPUT_POINTER then
-    inputBind("mouse_x", INPUT_ACTION_POINTERX)
-    inputBind("mouse_y", INPUT_ACTION_POINTERY)
-  end
-
-else
-  print("Unknown platform, no default input bindings set.")
-end

assets/player.js

@@ -0,0 +1,63 @@
+// Copyright (c) 2026 Dominic Masters
+//
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+const PLAYER_SPEED = 5.0;
+// 1 world unit = 16 pixels.
+const PIXEL_SCALE = 1.0 / 16.0;
+// Player sprite is 32x32 px (test.png dimensions).
+const PLAYER_W = 32 * PIXEL_SCALE;
+const PLAYER_H = 32 * PIXEL_SCALE;
+
+var player = {};
+
+player.getAssets = () => {
+  return [
+    { path: 'test.png', type: Asset.TYPE_TEXTURE, format: Texture.FORMAT_RGBA }
+  ];
+}
+
+player.init = function(scene) {
+  var texture = scene.assets.getAssetByPath('test.png');
+  Console.print('Player init: got texture ' + texture);
+
+  _entity   = Entity.create();
+  _position = _entity.add(Component.POSITION);
+  _physics  = _entity.add(Component.PHYSICS);
+
+  _physics.bodyType   = Physics.DYNAMIC;
+  _physics.shape      = Physics.SHAPE_CUBE;
+  _physics.gravityScale = 1.0;
+
+  var r       = _entity.add(Component.RENDERABLE);
+  r.texture   = texture.texture;
+  r.type      = Renderable.SPRITEBATCH;
+  r.color     = new Color(220, 80, 80);
+  // Upright quad centered on X, bottom-aligned on Y.
+  r.sprites = [[-PLAYER_W/2, 0, 0, PLAYER_W/2, PLAYER_H, 0, 0, 1, 1, 0]];
+
+  _position.localPosition = new Vec3(0, PLAYER_H, 0);
+};
+
+player.getPosition = function() {
+  return _position;
+};
+
+player.update = function() {
+  if(!_physics) return;
+  var vx = Input.axis(INPUT_ACTION_LEFT, INPUT_ACTION_RIGHT) * PLAYER_SPEED;
+  var vz = Input.axis(INPUT_ACTION_DOWN, INPUT_ACTION_UP) * PLAYER_SPEED;
+  // Preserve vertical velocity so gravity and landing work correctly.
+  var vy = _physics.velocity.y;
+  _physics.velocity = new Vec3(vx, vy, vz);
+};
+
+player.dispose = function() {
+  Entity.dispose(_entity);
+  _entity   = null;
+  _position = null;
+  _physics  = null;
+};
+
+module.exports = player;

assets/testscene.js

@@ -0,0 +1,42 @@
+// Copyright (c) 2026 Dominic Masters
+//
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+var scene  = {};
+
+// Pokemon DS-style camera: ~34 degrees elevation (atan(6/9)).
+// CAM_HEIGHT / CAM_DIST ratio controls the tilt - keep it under 0.7 for
+// the characteristically shallow DS angle.
+const CAM_HEIGHT = 6;
+const CAM_DIST   = 9;
+
+scene.init = async function() {
+  // Camera
+  scene.cam = Entity.create();
+  var camPos = scene.cam.add(Component.POSITION);
+  var cam = scene.cam.add(Component.CAMERA);
+  camPos.localPosition = new Vec3(3, 3, 3);
+  camPos.lookAt(new Vec3(0, 0, 0));
+  
+  // Floor - large flat slab, no texture needed.
+  scene.floor = Entity.create();
+  var floorPos = scene.floor.add(Component.POSITION);
+  var floorR = scene.floor.add(Component.RENDERABLE);
+  floorR.type  = Renderable.SHADER_MATERIAL;
+  floorR.color = Color.BLUE;
+  // floorPos.localScale = new Vec3(16, 0.2, 16);
+  // floorPos.localPosition = new Vec3(0, -0.1, 0);
+
+  await UIFullboxOver.transition(Color.BLACK, Color.TRANSPARENT, 1.0);
+};
+
+scene.update = function() {
+};
+
+scene.dispose = function() {
+  Entity.dispose(scene.floor);
+  Entity.dispose(scene.cam);
+};
+
+module.exports = scene;

assets/ui/test.js

@@ -0,0 +1,6 @@
+module = {
+  render() {
+    Text.draw(0, 0, "Hello World");
+    SpriteBatch.flush();
+  }
+};

cmake/targets/dolphin.cmake

@@ -1,57 +1,69 @@
-# Target definitions
+# Build type: DOL (SD/USB via libfat) or ISO (DVD disc via libogc DVD driver)
+set(DUSK_DOLPHIN_BUILD_TYPE "DOL" CACHE STRING "Dolphin asset source: DOL (SD/USB) or ISO (DVD disc)")
+set_property(CACHE DUSK_DOLPHIN_BUILD_TYPE PROPERTY STRINGS "DOL" "ISO")
+
+# Numeric tokens so #if DUSK_DOLPHIN_BUILD_TYPE == DOL works in C.
+# DUSK_DOLPHIN_BUILD_TYPE is passed without quotes so it expands to the identifier.
 target_compile_definitions(${DUSK_LIBRARY_TARGET_NAME} PUBLIC
   DUSK_DOLPHIN
   DUSK_INPUT_GAMEPAD
   DUSK_DISPLAY_WIDTH=640
   DUSK_DISPLAY_HEIGHT=480
+  DUSK_THREAD_PTHREAD
+  DOL=1
+  ISO=2
+  DUSK_DOLPHIN_BUILD_TYPE=${DUSK_DOLPHIN_BUILD_TYPE}
 )
 
 # Custom compiler flags
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti -fno-exceptions")
 
-# Need PkgConfig
-find_package(PkgConfig REQUIRED)
-pkg_check_modules(zip IMPORTED_TARGET libzip)
-
 # Disable all warnings
 target_compile_options(${DUSK_LIBRARY_TARGET_NAME} PRIVATE -w)
 
-# Custom flags for cglm
-set(CGLM_SHARED OFF CACHE BOOL "Build cglm shared" FORCE)
-set(CGLM_STATIC ON  CACHE BOOL "Build cglm static" FORCE)
+# cglm: fetched at source level via Findcglm.cmake (FetchContent, headers only)
 find_package(cglm REQUIRED)
 
-# Compile lua
-include(FetchContent)
-FetchContent_Declare(
-  liblua
-  URL https://www.lua.org/ftp/lua-5.5.0.tar.gz
-)
-FetchContent_MakeAvailable(liblua)
-set(LUA_SRC_DIR "${liblua_SOURCE_DIR}/src")
-set(LUA_C_FILES 
-  lapi.c lauxlib.c lbaselib.c lcode.c lcorolib.c lctype.c ldblib.c ldebug.c
-  ldo.c ldump.c lfunc.c lgc.c linit.c liolib.c llex.c lmathlib.c lmem.c
-  loadlib.c lobject.c lopcodes.c loslib.c lparser.c lstate.c lstring.c
-  lstrlib.c ltable.c ltablib.c ltm.c lundump.c lutf8lib.c lvm.c lzio.c
-)
-list(TRANSFORM LUA_C_FILES PREPEND "${LUA_SRC_DIR}/")
-add_library(liblua STATIC ${LUA_C_FILES})
-target_include_directories(liblua PUBLIC "${LUA_SRC_DIR}")
-target_compile_definitions(liblua PRIVATE LUA_USE_C89)
-add_library(lua::lua ALIAS liblua)
-set(Lua_FOUND TRUE CACHE BOOL "Lua found" FORCE)
+# Pre-create ZLIB::ZLIB so any downstream cmake module that resolves it
+# (FindZLIB, pkg-config IMPORTED_TARGET Requires processing) gets plain -lz
+# rather than an unresolvable IMPORTED target that the PPC linker rejects.
+if(NOT TARGET ZLIB::ZLIB)
+  add_library(ZLIB::ZLIB INTERFACE IMPORTED GLOBAL)
+  set_target_properties(ZLIB::ZLIB PROPERTIES INTERFACE_LINK_LIBRARIES "z")
+endif()
 
-# Link libraries
+# Mark libzip as found so src/dusk/CMakeLists.txt skips Findlibzip.cmake.
+# Findlibzip.cmake calls find_package(ZLIB) which can recreate a broken
+# ZLIB::ZLIB IMPORTED target, bypassing the shim above.
+set(libzip_FOUND TRUE CACHE BOOL "libzip found (devkitpro portlibs)" FORCE)
+
+# Locate zip.h in the devkitpro sysroot (respects CMAKE_FIND_ROOT_PATH).
+find_path(_dusk_zip_inc NAMES zip.h)
+if(_dusk_zip_inc)
+  target_include_directories(${DUSK_LIBRARY_TARGET_NAME} PRIVATE "${_dusk_zip_inc}")
+endif()
+
+# Link libraries.
+# zip/z/lzma use target_link_options (raw flags) to bypass cmake target
+# resolution — pkg-config-generated targets for these carry ZLIB::ZLIB in
+# INTERFACE_LINK_LIBRARIES which breaks the PPC link step.
 target_link_libraries(${DUSK_LIBRARY_TARGET_NAME} PRIVATE
   cglm
-  liblua
   m
-  fat
-  PkgConfig::zip
+  zip
+  bz2
+  zstd
+  z
+  lzma
 )
 
-# Postbuild
+if(DUSK_DOLPHIN_BUILD_TYPE STREQUAL "ISO")
+  target_compile_definitions(${DUSK_LIBRARY_TARGET_NAME} PUBLIC DUSK_DOLPHIN_BUILD_ISO)
+else()
+  target_link_libraries(${DUSK_LIBRARY_TARGET_NAME} PRIVATE fat)
+endif()
+
+# Postbuild: ELF -> DOL
 set(DUSK_BINARY_TARGET_NAME_DOL "${DUSK_BUILD_DIR}/Dusk.dol")
 add_custom_command(TARGET ${DUSK_BINARY_TARGET_NAME} POST_BUILD
   COMMAND elf2dol

cmake/targets/gamecube.cmake

@@ -3,3 +3,22 @@ include(cmake/targets/dolphin.cmake)
 target_compile_definitions(${DUSK_LIBRARY_TARGET_NAME} PUBLIC
   DUSK_GAMECUBE
 )
+
+# Link libraries
+target_link_libraries(${DUSK_LIBRARY_TARGET_NAME} PRIVATE
+  # bba
+)
+
+# ISO post-build: produce NTSC-J, NTSC-U and PAL disc images
+if(DUSK_DOLPHIN_BUILD_TYPE STREQUAL "ISO")
+  add_custom_command(TARGET ${DUSK_BINARY_TARGET_NAME} POST_BUILD
+    COMMAND ${Python3_EXECUTABLE}
+            "${CMAKE_SOURCE_DIR}/tools/makedolphiniso.py"
+            "GCN"
+            "${DUSK_BINARY_TARGET_NAME_DOL}"
+            "${DUSK_ASSETS_ZIP}"
+            "${DUSK_GAME_NAME}"
+            "${DUSK_BUILD_DIR}"
+    COMMENT "Building GameCube ISO images (NTSC-J, NTSC-U, PAL)"
+  )
+endif()

cmake/targets/knulli.cmake

@@ -34,6 +34,7 @@ target_compile_definitions(${DUSK_LIBRARY_TARGET_NAME} PUBLIC
   DUSK_OPENGL
   DUSK_OPENGL_ES
   DUSK_LINUX
+  DUSK_KNULLI
   DUSK_DISPLAY_SIZE_DYNAMIC
   DUSK_DISPLAY_WIDTH_DEFAULT=640
   DUSK_DISPLAY_HEIGHT_DEFAULT=480

cmake/targets/linux.cmake

@@ -26,10 +26,13 @@ target_link_libraries(${DUSK_LIBRARY_TARGET_NAME} PUBLIC
   # CURL::libcurl
 )
 
+set(DUSK_BACKTRACE ON CACHE BOOL "Enable backtrace support for assert failures.")
+
 # Define platform-specific macros.
 target_compile_definitions(${DUSK_LIBRARY_TARGET_NAME} PUBLIC
   DUSK_SDL2
   DUSK_OPENGL
+  DUSK_CONSOLE_POSIX
   # DUSK_OPENGL_LEGACY
   DUSK_LINUX
   DUSK_DISPLAY_SIZE_DYNAMIC
@@ -41,5 +44,5 @@ target_compile_definitions(${DUSK_LIBRARY_TARGET_NAME} PUBLIC
   DUSK_INPUT_GAMEPAD
   DUSK_TIME_DYNAMIC
   DUSK_NETWORK_IPV6
-  THREAD_PTHREAD=1
+  DUSK_THREAD_PTHREAD
 )

cmake/targets/psp.cmake

@@ -1,6 +1,16 @@
+set(CMAKE_AR "$ENV{PSPDEV}/bin/psp-ar" CACHE FILEPATH "" FORCE)
+set(CMAKE_RANLIB "$ENV{PSPDEV}/bin/psp-ranlib" CACHE FILEPATH "" FORCE)
+set(CMAKE_C_COMPILER_AR "$ENV{PSPDEV}/bin/psp-ar" CACHE FILEPATH "" FORCE)
+set(CMAKE_C_COMPILER_RANLIB "$ENV{PSPDEV}/bin/psp-ranlib" CACHE FILEPATH "" FORCE)
+set(CMAKE_C_ARCHIVE_CREATE "$ENV{PSPDEV}/bin/psp-ar qc <TARGET> <LINK_FLAGS> <OBJECTS>")
+set(CMAKE_C_ARCHIVE_APPEND "$ENV{PSPDEV}/bin/psp-ar q <TARGET> <LINK_FLAGS> <OBJECTS>")
+set(CMAKE_C_ARCHIVE_FINISH "$ENV{PSPDEV}/bin/psp-ranlib <TARGET>")
+set(CMAKE_INTERPROCEDURAL_OPTIMIZATION OFF CACHE BOOL "" FORCE)
+set(CMAKE_INTERPROCEDURAL_OPTIMIZATION_C OFF CACHE BOOL "" FORCE)
+
 find_package(SDL2 REQUIRED)
 find_package(OpenGL REQUIRED)
-target_link_libraries(${DUSK_LIBRARY_TARGET_NAME} PUBLIC
+target_link_libraries(${DUSK_BINARY_TARGET_NAME} PUBLIC
   ${SDL2_LIBRARIES}
   SDL2
   pthread
@@ -31,11 +41,11 @@ target_link_libraries(${DUSK_LIBRARY_TARGET_NAME} PUBLIC
   pspssl
 )
 
-target_include_directories(${DUSK_LIBRARY_TARGET_NAME} PRIVATE
+target_include_directories(${DUSK_BINARY_TARGET_NAME} PRIVATE
   ${SDL2_INCLUDE_DIRS}
 )
 
-target_compile_definitions(${DUSK_LIBRARY_TARGET_NAME} PUBLIC
+target_compile_definitions(${DUSK_BINARY_TARGET_NAME} PUBLIC
   DUSK_SDL2
   DUSK_OPENGL
   DUSK_PSP
@@ -44,7 +54,7 @@ target_compile_definitions(${DUSK_LIBRARY_TARGET_NAME} PUBLIC
   DUSK_OPENGL_LEGACY
   DUSK_DISPLAY_WIDTH=480
   DUSK_DISPLAY_HEIGHT=272
-  THREAD_PTHREAD=1
+  DUSK_THREAD_PTHREAD
 )
 
 # Postbuild, create .pbp file for PSP.

cmake/targets/vita.cmake

@@ -20,31 +20,9 @@ set(CGLM_SHARED OFF CACHE BOOL "Build cglm shared" FORCE)
 set(CGLM_STATIC ON  CACHE BOOL "Build cglm static" FORCE)
 find_package(cglm REQUIRED)
 
-# Compile lua
-include(FetchContent)
-FetchContent_Declare(
-  liblua
-  URL https://www.lua.org/ftp/lua-5.5.0.tar.gz
-)
-FetchContent_MakeAvailable(liblua)
-set(LUA_SRC_DIR "${liblua_SOURCE_DIR}/src")
-set(LUA_C_FILES 
-  lapi.c lauxlib.c lbaselib.c lcode.c lcorolib.c lctype.c ldblib.c ldebug.c
-  ldo.c ldump.c lfunc.c lgc.c linit.c liolib.c llex.c lmathlib.c lmem.c
-  loadlib.c lobject.c lopcodes.c loslib.c lparser.c lstate.c lstring.c
-  lstrlib.c ltable.c ltablib.c ltm.c lundump.c lutf8lib.c lvm.c lzio.c
-)
-list(TRANSFORM LUA_C_FILES PREPEND "${LUA_SRC_DIR}/")
-add_library(liblua STATIC ${LUA_C_FILES})
-target_include_directories(liblua PUBLIC "${LUA_SRC_DIR}")
-target_compile_definitions(liblua PRIVATE LUA_USE_C89)
-add_library(lua::lua ALIAS liblua)
-set(Lua_FOUND TRUE CACHE BOOL "Lua found" FORCE)
-
 # Link libraries
 target_link_libraries(${DUSK_LIBRARY_TARGET_NAME} PUBLIC
   ${SDL2_LIBRARIES}
-  liblua
   cglm
   SDL2
   SDL2main

cmake/targets/wii.cmake

@@ -3,3 +3,25 @@ include(cmake/targets/dolphin.cmake)
 target_compile_definitions(${DUSK_LIBRARY_TARGET_NAME} PUBLIC
   DUSK_WII
 )
+
+# Generate Homebrew Channel meta.xml from project identity variables
+string(TIMESTAMP DUSK_BUILD_DATE "%Y%m%d000000" UTC)
+configure_file(
+  "${CMAKE_SOURCE_DIR}/docker/dolphin/meta.xml.in"
+  "${DUSK_BUILD_DIR}/meta.xml"
+  @ONLY
+)
+
+# ISO post-build: produce NTSC-J, NTSC-U and PAL disc images
+if(DUSK_DOLPHIN_BUILD_TYPE STREQUAL "ISO")
+  add_custom_command(TARGET ${DUSK_BINARY_TARGET_NAME} POST_BUILD
+    COMMAND ${Python3_EXECUTABLE}
+            "${CMAKE_SOURCE_DIR}/tools/makedolphiniso.py"
+            "WII"
+            "${DUSK_BINARY_TARGET_NAME_DOL}"
+            "${DUSK_ASSETS_ZIP}"
+            "${DUSK_GAME_NAME}"
+            "${DUSK_BUILD_DIR}"
+    COMMENT "Building Wii ISO images (NTSC-J, NTSC-U, PAL)"
+  )
+endif()

docker/dolphin/Dockerfile

@@ -1,6 +1,7 @@
-FROM devkitpro/devkitppc
+FROM ghcr.io/extremscorner/libogc2
 WORKDIR /workdir
 RUN apt update && \
-    apt install -y python3 python3-pip python3-polib python3-pil python3-dotenv python3-pyqt5 python3-opengl && \
-    dkp-pacman -S --needed --noconfirm gamecube-sdl2 ppc-liblzma ppc-libzip
+    dkp-pacman -Syu --noconfirm && \
+    apt install -y python3 python3-pip python3-polib python3-pil python3-dotenv python3-pyqt5 python3-opengl xorriso && \
+    dkp-pacman -S --needed --noconfirm gamecube-sdl2 ppc-liblzma ppc-libzip libogc2 gamecube-tools ppc-libmad ppc-zlib-ng ppc-liblzma ppc-bzip2 ppc-zstd
 VOLUME ["/workdir"]

docker/dolphin/meta.xml

@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<app version="1">
-	<name>Dusk</name>
-	<version>1.00</version>
-	<release_date></release_date>
-	<coder>YouWish</coder>
-	<short_description>Dusk game</short_description>
-	<long_description>No description yet.</long_description>
-  <ahb_access/>
-</app>

docker/dolphin/meta.xml.in

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<app version="1">
+	<name>@DUSK_GAME_NAME@</name>
+	<version>@PROJECT_VERSION@</version>
+	<release_date>@DUSK_BUILD_DATE@</release_date>
+	<coder>@DUSK_GAME_AUTHOR@</coder>
+	<short_description>@DUSK_GAME_SHORT_DESCRIPTION@</short_description>
+	<long_description>@DUSK_GAME_LONG_DESCRIPTION@</long_description>
+	<ahb_access/>
+</app>

docker/linux/Dockerfile

@@ -14,8 +14,8 @@ RUN apt-get install -y \
   python3-dotenv \
   python3-pyqt5 \
   python3-opengl \
-  liblua5.3-dev \
   xz-utils \
+  liblzma-dev \
   libbz2-dev \
   zlib1g-dev \
   libzip-dev \

scripts/build-gamecube-docker.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
 docker build -t dusk-dolphin -f docker/dolphin/Dockerfile .
-docker run --rm -v $(pwd):/workdir dusk-dolphin /bin/bash -c "./scripts/build-gamecube.sh"
+docker run --rm -v "$(pwd):/workdir" dusk-dolphin /bin/bash -c "./scripts/build-gamecube.sh"

scripts/build-gamecube-iso-docker.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+docker build -t dusk-dolphin -f docker/dolphin/Dockerfile .
+docker run --rm -v "$(pwd):/workdir" dusk-dolphin /bin/bash -c "./scripts/build-gamecube-iso.sh"

scripts/build-gamecube-iso.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+if [ -z "$DEVKITPRO" ]; then
+  echo "DEVKITPRO environment variable is not set. Please set it to the path of your DEVKITPRO installation."
+  exit 1
+fi
+
+mkdir -p build-gamecube-iso
+cmake -S. -Bbuild-gamecube-iso \
+  -DDUSK_TARGET_SYSTEM=gamecube \
+  -DDUSK_DOLPHIN_BUILD_TYPE=ISO \
+  -DCMAKE_TOOLCHAIN_FILE="$DEVKITPRO/cmake/GameCube.cmake"
+cd build-gamecube-iso
+make -j$(nproc) VERBOSE=1

scripts/build-gamecube.sh

@@ -5,6 +5,10 @@ if [ -z "$DEVKITPRO" ]; then
 fi
 
 mkdir -p build-gamecube
-cmake -S. -Bbuild-gamecube -DDUSK_TARGET_SYSTEM=gamecube -DCMAKE_TOOLCHAIN_FILE="$DEVKITPRO/cmake/GameCube.cmake"
+cmake -S. -Bbuild-gamecube \
+  -DDUSK_TARGET_SYSTEM=gamecube \
+  -DDUSK_DOLPHIN_BUILD_TYPE=DOL \
+  -DCMAKE_TOOLCHAIN_FILE="$DEVKITPRO/cmake/GameCube.cmake" \
+  -DDKP_OGC_PLATFORM_LIBRARY=libogc2
 cd build-gamecube
 make -j$(nproc) VERBOSE=1

scripts/build-knulli-docker.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
 docker build -t dusk-knulli -f docker/knulli/Dockerfile .
-docker run --rm -v $(pwd):/workdir dusk-knulli /bin/bash -c "./scripts/build-knulli.sh"
+docker run --rm -v "$(pwd):/workdir" dusk-knulli /bin/bash -c "./scripts/build-knulli.sh"

scripts/build-linux-docker.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
 docker build -t dusk-linux -f docker/linux/Dockerfile .
-docker run --rm -v $(pwd):/workdir dusk-linux /bin/bash -c "./scripts/build-linux.sh"
+docker run --rm -v "$(pwd):/workdir" dusk-linux /bin/bash -c "./scripts/build-linux.sh"

scripts/build-psp-docker.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
 docker build -t dusk-psp -f docker/psp/Dockerfile .
-docker run --rm -v $(pwd):/workdir dusk-psp /bin/bash -c "./scripts/build-psp.sh"
+docker run --rm -v "$(pwd):/workdir" dusk-psp /bin/bash -c "./scripts/build-psp.sh"

scripts/build-vita-docker.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
 docker build -t dusk-vita -f docker/vita/Dockerfile .
-docker run --rm -v $(pwd):/workdir dusk-vita /bin/bash -c "./scripts/build-vita.sh"
+docker run --rm -v "$(pwd):/workdir" dusk-vita /bin/bash -c "./scripts/build-vita.sh"

scripts/build-wii-docker.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
 docker build -t dusk-dolphin -f docker/dolphin/Dockerfile .
-docker run --rm -v $(pwd):/workdir dusk-dolphin /bin/bash -c "./scripts/build-wii.sh"
+docker run --rm -v "$(pwd):/workdir" dusk-dolphin /bin/bash -c "./scripts/build-wii.sh"

scripts/build-wii-iso-docker.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+docker build -t dusk-dolphin -f docker/dolphin/Dockerfile .
+docker run --rm -v "$(pwd):/workdir" dusk-dolphin /bin/bash -c "./scripts/build-wii-iso.sh"

scripts/build-wii-iso.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+if [ -z "$DEVKITPRO" ]; then
+  echo "DEVKITPRO environment variable is not set. Please set it to the path of your DEVKITPRO installation."
+  exit 1
+fi
+
+mkdir -p build-wii-iso
+cmake -S. -Bbuild-wii-iso \
+  -DDUSK_TARGET_SYSTEM=wii \
+  -DDUSK_DOLPHIN_BUILD_TYPE=ISO \
+  -DCMAKE_TOOLCHAIN_FILE="$DEVKITPRO/cmake/Wii.cmake"
+cd build-wii-iso
+make -j$(nproc) VERBOSE=1

scripts/build-wii.sh

@@ -5,6 +5,10 @@ if [ -z "$DEVKITPRO" ]; then
 fi
 
 mkdir -p build-wii
-cmake -S. -Bbuild-wii -DDUSK_TARGET_SYSTEM=wii -DCMAKE_TOOLCHAIN_FILE="$DEVKITPRO/cmake/Wii.cmake"
+cmake -S. -Bbuild-wii \
+  -DDUSK_TARGET_SYSTEM=wii \
+  -DCMAKE_TOOLCHAIN_FILE="$DEVKITPRO/cmake/Wii.cmake" \
+  -DDUSK_DOLPHIN_BUILD_TYPE=DOL
 cd build-wii
 make -j$(nproc) VERBOSE=1
+mv Dusk.dol boot.dol

scripts/test-linux-docker.sh

@@ -1,3 +1,7 @@
 #!/bin/bash
 docker build -t dusk-linux -f docker/linux/Dockerfile .
-docker run --rm -v $(pwd):/workdir dusk-linux /bin/bash -c "./scripts/test-linux.sh"
+docker run \
+  --rm \
+  -v "${GITHUB_WORKSPACE}:/workdir" \
+  dusk-linux \
+  /bin/bash -c "./scripts/test-linux.sh"

scripts/test-linux.sh

@@ -1,4 +1,6 @@
 #!/bin/bash
+set -e
+rm -rf build-tests
 cmake -S . -B build-tests -DDUSK_BUILD_TESTS=ON -DDUSK_TARGET_SYSTEM=linux
 cmake --build build-tests -- -j$(nproc)
 ctest --output-on-failure --test-dir build-tests