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Stages 1 and 2 gave the asset a model and a picture, but the only way to put a shape into it was a test calling mutate. The tab closes that gap: what you draw there is what the sprite in the scene carries, with no extra step, because the fingerprint changes and the picture registry of #185 redraws. - The tab has a header with Select, Pen, Grid and Fit, a chequerboard behind the canvas and the canvas itself as a frame. It paints with the same commands as the rasterizer, paintDrawing being exported from viewport/vectorArtPicture.ts for it, so the tab cannot drift away from the picture. - Pen sets points on a click and pulls the handles out on a drag, both of them mirrored; a click on the first point closes the ring and Esc ends an open line. - Select drags a point, a handle or a whole shape, a click on an edge puts a point there, a double click takes one away, and Alt turns a corner round and back. Delete removes the selected shape. - The rules grew inside polygonEdit.ts instead of a second module, as the plan says, so a collider polygon and a frame outline get the same behaviour where it applies. - A point on a curved edge splits the curve by de Casteljau instead of cutting it: both halves together draw exactly what was there before. - A curved edge is walked instead of measured over its chord, or a click on the bow of a curve would grab nothing; the same walk carries the test for the inside of a ring. - One gesture is one undo step. The preview writes the model directly and the old state is put back on release before the command runs, which is the pattern the frame outlines of #141 already use. - state.ts gained a selection kind "shape". The inspector shows the rows of the asset for it, the shape list with colour, opacity and stroke being stage 4. One counter-check was no counter-check: disabling the pen's closing tolerance by multiplying it with 0 left the run green, and rightly so, because the closing click lands on exactly the screen coordinate point 0 came from, so the distance is 0 and <= 0 is true. Only an unsatisfiable condition really switched it off, and then 2 checks fail. A second trap on the way: a false && in front of the guard breaks the TS narrowing, npm run build bails out, and two runs went against the old bundle. Tests: check.sh 127 files, 1878 tests, EXIT 0 (was 126 / 1860). Full e2e suite ALL PASSED - 1172 checks, module 47 alone 17 (was 10). 18 new unit tests in tests/editor/ring-edit.test.ts and 7 new e2e checks in blocks 47c and 47d. Two counter-checks hold: no de Casteljau fails 1 unit test, measuring a curve over its chord fails another. Originals checked back with cmp and rebuilt.
6.0 KiB
6.0 KiB
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, 1172 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.