adminandClaude Opus 5
6e3e8d23c5
Until now every boolean operation on vector art threw the curves away. The shapes were flattened into line segments, the operation ran on those segments, and the result came back as a polygon. A circle that nothing even touched came out of an Exclude with 40 corners instead of its four points and handles. Now the result carries the original curves again, and only the edges the operation really drew stay straight. - While flattening, every sample point remembers which curve it came from and where on that curve it sits. The operation runs on the same segments as before, so nothing about the boolean result changes. - When a run of result points walks along one of those curves, that piece is cut out of the original curve again with de Casteljau. This is an exact cut, not a fit through the points. - An edge whose two ends sit on the same curve but whose middle does not follow it stays straight. Without that rule a cut-off cap would bulge back into the shape. - A closed contour keeps at least three points, so a lens shape does not collapse into two. - The rule lives in its own module, src/core/model/vectorCurves.ts. vectorBoolean.ts only hands it the table of sampled points. Findings: - The two intersection points themselves sit up to 0.09 canvas pixels off the original curve. Clipper cuts the flattened segments, not the curves, so this was the case before as well and stays inside the 0.2 px sampling tolerance. - Refining those points with Newton steps on the curve was measured and gave nothing back (0.02952 px instead of 0.02978 px), because the error is in the intersection itself and not in the estimate. The code was removed again. - Theme.ts rowHeight 22 -> 24 is in this commit. The change is not mine, it was already in the working tree; gate and module 47 are green with it. Tests: - ./check.sh: 143 files, 2133 tests, exit 0 (was 2127) - e2e module 47 on a fresh seed: all passed, 59 checks (was 57) - 6 new unit tests: untouched circle, untouched side plus a straight cut edge, a cut in the middle of a curve, a chord crossing one curve twice, two overlapping circles, the three point minimum - 2 new e2e checks in block 47p: point count and handles from the model, plus a pixel pair on the round edge - Four counter-proofs, all bite: no reconstruction -> 5 unit tests and the e2e check fail with 35 points and nothing curved; no chord test -> the cap bulges back to 28.28; no three point rule -> the lens test fails; handles halved -> the pixel check reads background Co-Authored-By: Claude Opus 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, 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, 1304 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 |
| 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.