adminandClaude Opus 5.5
46c620ae3b
A behavior run by another one had a single flow port at its Start and at its End, so it could not branch for its caller. And it could not be used as an event: a call needs a pulse at its flow input, and the events of a called graph never fire. An input like "Confirm" (Space or Enter) had to be built again in every graph. - A declared port of a Start or an End node can be of the kind Flow. It sits above the values and shares their names, exec stays reserved. Only these two nodes declare one, a struct does not. - Run behavior shows a flow port of the Start as a further flow input. A call arriving through it leaves the Start through the output of that name and not through exec. - Run behavior shows a flow port of the End as a further flow output. The call goes on through the one the End was reached by last, and then through exec. exec fires always, as before. - On behavior is a new event node without a flow input. The behavior it names runs at the node for as long as the behavior around it runs, with all of its own events and one set of variables per node. - Its outputs are those of the End. It fires once the inner pulse is through, by the output the End was reached by last, exec only for End.exec. A pulse that never reaches the End is not seen. - The value ports of the Start are its inputs, read anew for each inner pulse. The Start itself never fires there. - It nests to any depth. Under a Run behavior it stays silent. A behavior hearing itself, however far round, is not started and the node says "A behavior cannot listen to itself". - The palette offers every other behavior with an End once more as "On <name>". A node naming one without End says so. - An On node removed while the game runs ends its behavior with On disable and On destroy. The sounds of the entity end only with the behavior placed on it. - Renaming and deleting a declared port follows the edges at On behavior nodes as it does at Run behavior nodes. - The flow outputs of the Start of a behavior placed on an object never fire, like its exec. - The engine prompt of the benchmark names flow ports and On behavior. Tests: - Gate on melektaus-atx right before this commit: 215 files, 3319 tests (3278 + 41), exit 0. - e2e 19 on melektaus-atx: 39 checks (+4), all pass. e2e 1-6,17-24,26,36,51: 628 checks, all pass. - 19 unit tests in flow-ports.test.ts, 19 in on-behavior.test.ts on a real world, the rest in the node catalog. - Four new e2e checks in module 19: a flow port declared by mouse at the End, On Confirm in the graph, the call leaving through the further output while playing, Enter and Space on a real keyboard. - 19 unit counter-probes all fail their tests. One did not at first (a removed node kept its instance), a test was added. Two browser counter-probes fail their checks. - One screenshot looked at: On Confirm with exec and pressed, the second flow pin at the calling node. - The e2e sum of 1680 is counted (1676 + 4), the full suite and the smokes did not run. - Not seen in the browser: flow inputs at the Start, nesting, the ring, values through On behavior, the palette entry. No test holds that the sounds of the entity go on when a heard behavior ends. 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, 1680 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.