Patterns could only be heard one at a time, in their own tab or from a behavior. A song lays patterns and sounds out on tracks along one time axis and plays them through the scheduler of #332, the third piece of the music tools of #330. - New asset type song under the heading Songs, with four empty tracks, 120 BPM in 4/4 and a grid of a bar. Tempo, meter and grid are rows in the inspector. Tracks, items and the loop are the asset's data, held to their rules on load and in every command. - A track has a name, volume, pan, mute and solo. Each is heard on a bus of its own, so a change reaches what is sounding at once. - A pattern item repeats its pattern for as long as it is, with a transpose and another instrument if wanted. A sound item plays its sound as a clip at its own speed, round and round, through a sound FX if wanted. Both have a volume on top of their track's. - Cut back at the left end or split, an item starts as far into what it plays as the cut is: ticks into a pattern, seconds into a sound. - The tab shows the heads with M, S, volume and pan, the ruler of the Pattern tab and the items, a pattern with its notes, a sound with its waveform, a missing asset red. Patterns and sounds are dragged in from the Assets panel. Body, right and left end move, lengthen and cut back, Alt leaves the grid. Ctrl+C/V/D/A, Ctrl+E splits where playing starts, Delete, arrows. A double-click opens a pattern item in its tab. - What is picked is a new selection of its own, so the inspector shows the item or the track, with a button to delete it. - The scheduler plans clips beside notes. Where the playhead starts or jumps back inside a clip, it is taken up that far into its sound. A clip fades out at the end of its item or of the loop. - The editor plays one piece at a time: a pattern started stops the song and the other way round. - The rules are pure functions in core/music/song, editor/song/ songView and songEdit. Findings: - The suites of4ea752fand2a3b90bwere red at e2e 54: the Pattern pushed Struct below the fold of the + menu. The module now scrolls to it, as e2e 47 does for Vector art. It also left the menu open, which made e2e 55 fail behind it. - The Assets panel only dragged assets a scene can place. Patterns and sounds are dragged now as well, and a scene says why it does not take one instead of calling every asset a scene. Tests: - song.test.ts (new, 14) and song-edit.test.ts (new, 9): model, round trip, sequence of patterns and clips, mute and solo, cuts, clips on the scheduler, moving, sizing, trimming, splitting, duplicating, hits, head parts. sound-library.test.ts +5: clip offset, end fade, pitched clip, track bus, peaks. - e2e 65 (new) on melektaus-atx: ALL PASSED, 18 checks. e2e 54 and 55 with the fix: ALL PASSED, 33 checks. e2e 4 with 30 asset types: ALL PASSED, 62 checks. - Gate on melektaus-atx: CHECK EXIT 0, 250 test files, 3884 tests. - Counter-checks: no taking up of a clip, no pattern offset, no clip end each fail 3, 1 and 1 tests. - Probe on stein2: the tab with four tracks, before and while playing, looked at in two screenshots. 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, joint, container, clip area, texture, vector art, pixel art, palette, animation, curve, tile, tilemap, state machine, shader, shader function, 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, 1744 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 runners – 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, joints |
| 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 that sprites, texts, particle fields and cameras wear, their node set, passes, shader functions |
| 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.
