adminandClaude Opus 5.5
a526e1b40f
A calculation needed in several shaders (a greyscale, a noise, an outline) had to be built again in every one of them. A shader function keeps it as an asset of its own, called like a behavior is since #16. - New asset type `shaderfunction` ("Shader function"), edited in the Shader tab. The panel beside the graph shows no picture, the readout counts its inputs and outputs. - Two new nodes: `Function input` and `Function output`. Their declared ports, numbers or colours only, are the ports of every call. One of each per function, like Start and End. - The call is node `ShaderCall`, named after the function. The palette lists every function, it can be dragged in from the Assets panel, and a double-click opens it. - The compiler sets the function in where it is called (`inlineFunctions`). It renames the copied nodes `<call>/<node>` and turns an unconnected port into a constant. Passes, Time, the Edge cut and the corner walk then see a plain graph. - A problem inside a function is reported at the call, in the function's words. The function's own tab checks it on its own (`checkShaderFunction`). - `ShaderLibrary` keys a shader on its graph and on every function it calls, however deep, so a change reaches every caller. - The port commands mirror a new, renamed or removed port into every call, as for a behavior's Start and End. `NodeDef.portKinds` holds the two ends to Number and Color. - As agreed in the issue: no `Property`, `Color property`, Output or Vertex output in a function, and `Time` is the caller's clock. - Own decision: a `Pass` may stand in a function. It becomes a pass of the calling shader, so a wide blur can be a function. - A function calling itself, also through another, says so at the node and is not set in. The palette does not offer such a call. - The Shader tab showed only the compiler's problems. A call nothing reaches was never compiled and looked healthy, so a call now also shows its own problem there, as in a behavior. Tests: - Gate: 228 files, 3510 tests, CHECK EXIT 0 (+13: 11 in tests/core/shader-functions.test.ts, 2 for the new icon) - e2e 28: 100 checks, all passed (+3 in 28l-viii). Called and in place both #606060/#a2a2a2, halved in the function #303030/#515151. - Counter-check: a fingerprint without the called functions fails 1 unit test, and in the browser the change check (#606060 stays). - The first e2e runs found two faults, both fixed: a double-click only selected the function, and an unreached call of itself showed no problem. - e2e total 1728 is computed (1725 + 3). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
6.8 KiB
6.8 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, variables, struct, collider, rigidbody, container, clip area, texture, vector art, pixel art, palette, animation, curve, tile, tilemap, state machine, shader, font, sound, particles) 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. Release… shares a link that plays the saved game on its own, without the editor and without signing in.
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, 1728 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 |
| Structs | Struct assets: a named shape that struct variables, fields and Pack/Expand follow |
| 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 |
| Curves | Easings drawn by hand, the Curve tab, using one on a key or a Lerp |
| 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.