The groups of the inspector had a small grey label as their title, in the same grid as a property row, so with many rows one group hardly stood apart from the next. Now every group has a band as its head, from edge to edge of the panel, and a click on it folds the group. - A band runs across the padding of its column in the header colour, with the title and a mark that says whether the group is open. The titles stay as they are, as answered in the issue. - A click on a band folds its group: the rows go, the band stays and the next band moves up against it. A control in the band (Open, + Variable, + Property) does its own job and folds nothing. - A placed object has a group SWITCHES under its name, asset and parent: Enabled, Keep on scene load and the switches of a behavior. An asset has SWITCHES and PROPERTIES, and a group without rows is left out. - The same bands head the tilemap panel, the Variables tab, the side of the Pixel art tab and the shape list of vector art. A list with a title (Layers, Frames, Shapes) folds with a click on its header, clear of its plus. - ui/sections.ts holds the rules as pure functions, SectionStack is the column and SectionHeader the band. Every title of the inspector goes through addTitle or sectionHeader in inspector/host.ts. Decided here: - A fold is kept for good, in localStorage of this browser. The issue asked whether for the session or for good and the answer left it open. - A fold is remembered by title, per panel. PROPERTIES folded once is folded on every object, asset and node. A number in a title does not count. - A behavior asset has all its rows under SWITCHES. A Variables asset and a state machine get a group SCOPE. - A greyed out control in a band takes the click too. Without that the click fell through to the band and folded the group. - The Curve tab has no column of this kind and is unchanged. Found on the way: - The inspector of a sprite is taller than the 800 pixel window of the checks now. The hooks that hand out a row scroll it into view first, and module 28 scrolls before it looks for a row by its text. Tests: - Gate: 202 files, 3008 tests (2982 + 26), exit 0 - e2e: no complete run for this state. Modules 28 to 61 passed alone (749 checks). A full run was cut off in the accounts module at 1492 passes without a failure, the modules after it and the smokes are missing. The sum of 1639 (1635 + 4) is reckoned, CI measures it. - 26 unit tests in tests/editor/sections.test.ts - Four e2e checks with a real mouse, three in module 02 and one in module 48 - 25 unit counter-probes all fail tests, run on stein2 - Screenshots of the bands looked at before the last build, none after it Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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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, 1639 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.
