adminandClaude Opus 5.5
f02adabcf9
The result of Add, Multiply, Mix and the other arithmetic nodes of a shader graph was drawn as any, whatever went in. The compiler already lifts a colour on any side to a colour result, so the pin said less than the code knew. A colour result could also be wired into a number input, and the shader then failed to compile. - liftedType in core/shader/nodes.ts is the one rule. The compiler reads it when it lifts two operands, and the editor reads it through liftedPortType for the ports it draws. - A SharedPortGroup may bring its own rule as agree. Without one it is agreedType, as before. The thirteen arithmetic nodes share their type by liftedPortType. - Only the any inputs decide. An input nothing feeds counts as the number typed into it. t, edge, exponent, min and max have no say. - The type travels through a chain of such nodes without code of its own, because #210 hands a shared type on. - In a ring the result stays any, unless a colour has settled it. - A number may feed a colour input. Without that a number result no longer fitted Output.color, although the compiler spreads it over three channels. The rule sits in portsCompatible, but only the shader graph has colour ports. - A colour result no longer fits a number input. An edge laid before the colour came in stays and is drawn in the danger colour, and the node at its end names the problem. - The nine shaders in the stored projects (108 edges) all stay valid under the new rule. Tests: - Gate on melektaus-atx: 212 files, 3260 tests (3240 + 20), exit 0. The gate right before this commit ran on the tree of this and the next commit together, with the same numbers. - e2e 28 on melektaus-atx: 81 checks, all pass. - e2e 1-31: 1059 pass, 1 fail in module 18 (the editor clock read 1.97 s after a stop). A rerun of 1-18 passed with 602 checks and 0.18 s. 1-31 was not run in full again. - No full run and no smokes. The sum of 1676 (1673 + 3) is reckoned. - Twenty unit tests in shader-port-types.test.ts, one of them runs all thirteen nodes through every mix of number and colour and compares what is drawn with the code made. - Two tests in shaders.test.ts now lay the edge first and bring the colour in after, the only order that still wires such a graph. - Three e2e checks in module 28 with the real mouse: a colour into Multiply, the red edge with its message, and the colour result refused at alpha and taken at color. - Fifteen unit counter-probes and two browser counter-probes all fail their tests. - Not checked in the browser: the one-input nodes, Mix and the ring, and a number wired straight into a colour input. Nothing was looked at after the build. 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, 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, 1676 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.