The theme asks for Source Sans 3 at weight 500, but fonts.ts only
loaded 400, 600 and 700. The browser synthesised the 500 text. The
issue comment also asked for the symbols the font lacks to become SVG
icons. A scan of src/ against the font's cmap found 20 such characters
in 30 places.
- fonts.ts loads source-sans-3-latin-500-normal.woff2 as well.
- Menus draw their ticks and the "current" dot as icons. The dot is a
new MenuItem.current field and no longer part of the label text.
- Inspector action buttons (reset, apply, fit width/height) are
icons. The menu arrow behind them is the drawn Dropdown chevron.
- Kind marks come from a table in markIcons.ts. Picture kinds use an
icon, # and Aa stay text because the font has them.
- Scene marks in the asset panel, sound play/stop and the transition
arrows are icons too.
- Apply is an icon although the font has the arrow. It sits next to
the reset icon and would look different as a glyph.
- A new Icon widget draws on redraw like Button, so Node tests need no
DOMParser.
- Tests find icons through the SVG id. The new hook
__gm.locateIcons(id) and the harness helpers findIcon/clickIcon
replace locate() on the old characters.
Findings:
- Weight 700 is loaded but the theme never uses it. Left as is.
- The old scene-mark check in module 35 accepted any play glyph on
screen. It now checks the mark on the start scene's row.
- Module 44 needs the textures from module 37 and fails without it.
Tests:
- ./check.sh: 145 files, 2187 tests, exit 0 (before 144 / 2143).
- New tests/ui/fonts.test.ts: every theme weight is loaded, and every
character in src/ exists in every shipped face. The cmap reader
matches fontTools (231 characters).
- Icon tests cover the 19 new files. Each kind mark is either an
icon or text, never both.
- e2e 1-16,22,30,34,35,43,44: 586 green, 0 FAIL, then 44 stopped
for lack of module 37. e2e 1-16,37,44,47,48: 618 green.
e2e 1-14 on the final build: 454 green.
- Two new e2e checks: loaded weights in 14, a reset icon pixel in 04.
- Counter-probes all fail as expected: 500 removed, a play glyph put
back, the struct icon removed (one unit test each). In the browser,
500 removed and reset icon hidden fail exactly the two new checks.
- Editor-suite check sum 1312 (1310 measured by CI at 056a622, +2).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Game Maker
A browser-based tool "one step before a game engine": create assets (scenes, cameras, sprites), place them into scenes, tweak their properties in an inspector and press Play – all in one program, all drawn inside a single WebGL canvas.
Live: https://nockal.com/game-maker/ · Widget playground: https://nockal.com/game-maker/?playground
The documentation is the wiki: https://git.nockal.com/meleki/game-maker/wiki – every concept, node, tab and shortcut, plus the architecture and the development workflow. This file is the short way in.
In one screen
- An asset is a named, typed thing (scene, camera, sprite, text, behavior, collider, rigidbody, container, texture, vector art, pixel art, palette, font, sound, animation, state machine, shader, particles, variables, tile, tilemap) with properties and no position.
- A scene object places an asset: position, sparse overrides of its properties, an optional parent. Only what differs from the asset is stored; the inspector paints it gold and offers ↺ / ↑.
- A container is a reusable group edited once and placed many times; its content is resolved from the template on every read. A screen is a container switched on and off.
- A behavior is logic as a node graph, placed like anything else and parented to the object it acts on. Play has no built-in behaviour – everything that happens is a graph.
- An account owns projects: the editor asks for a user name and a password first, and each account sees only its own projects. The Account menu at the far right of the toolbar changes the password and signs out.
- Play runs a throwaway copy of the project; every panel stays usable and Stop brings back exactly what was saved.
Quick start
Node 22 is required.
npm install
npm run dev # http://localhost:5175/game-maker/dist/ – API calls are proxied to production
npm run check # typecheck + lint + format:check + unit tests – the gate CI runs too
npm run build # writes dist/ and regenerates index.html; the folder is what nginx serves
The browser suite and the three example games need a machine with a GPU:
node tools/seed-e2e.mjs && node tools/e2e.mjs # the editor, 1312 checks (GM_STEPS=20 for one step)
# every tool signs in first – see the Accounts page
node tools/seed-jumprun.mjs && node tools/smoke-jumprun.mjs
node tools/seed-tetris.mjs && node tools/smoke-tetris.mjs
node tools/seed-actor.mjs && node tools/smoke-actor.mjs
Every push runs all of it on the Gitea runner – the gate as one job, build and suite as another beside it – so locally take the gate plus the step your change touches and leave the full run to CI. Details, the GPU requirement and the detached runner are in Development.
Documentation
| Page | What it covers |
|---|---|
| Concepts | Assets, scene objects, overrides, play mode, the camera, the console |
| Accounts | Signing in and out, the accounts, who a project belongs to, what the check tools need |
| Scenes | The edited scene, the start scene, and switching scenes from a graph |
| Scene editing | Placing, z-order, hierarchy, the editor offset |
| Behaviors | Node graphs: variables, the node set, structs and lists, loops, nesting, editing |
| Colliders | Shapes (box, circle, capsule, polygon), collision events, blocking movement, one-way colliders and raycasts |
| Physics | Rigidbodies, the collider material, gravity, the fixed step |
| Textures | Images, frames, nine-slice, the filter, upload limits |
| Vector art | Pictures drawn from shapes: the pen, curves, gradients and texture fills, combining shapes |
| Pixel art | Pictures painted pixel by pixel: the palette, the tools, layers and frames |
| Fonts | Font assets, the picker, what a text falls back to |
| Sounds | Sound assets and Play sound |
| Animations | Animation assets and the Animation tab |
| Shaders | Shader graphs a sprite wears, their node set, the properties they declare |
| Particles | Particle graphs: a particle as a function of its age |
| State machines | The asset, named transitions, State branch, Set state and State transition |
| Containers | Templates, instances, screens |
| Tiles | The tile asset, plain tiles and the two autotile kinds, the pictures as animation steps, the Tile tab |
| Tilemaps | The tilemap asset, painting in the scene view, layers, what it looks like in the game |
| Plugins | Extending the editor: the plugin file, how it is loaded, switching one on and off, API v1 |
| Keyboard | Every shortcut |
| Architecture | Stack, source layout, the rules that keep it organised |
| Development | Commands, the e2e suite, the example games, CI |
| API | The PHP JSON API and the project document |
Ideas, gaps and bugs
They live in the issue tracker: https://git.nockal.com/meleki/game-maker/issues. What is not there yet is listed on the wiki's Home page.
