adminandClaude Opus 5.5
9c71eb1a0d
Without an envelope a note set in hard and broke off 10 ms after its end. An instrument now has an Envelope node with attack, decay, sustain and release. On the way of the sound it is the volume. Its output "value" moves a number of the note with the same curve, from "From" to "To", for a filter sweep among others. A new Filter node gives that sweep something to move. - Envelope (instrument only): attack a straight line, decay and release ease out and are 60 dB of the way at their time. A release takes 10 ms at least. Defaults 0.005 / 0.1 / 1 / 0.1. - The end of a note goes to the Envelope instead of the 10 ms fade. A Gate or Loop Sample under it plays on through the release, "Loop, then release" leaves its loop too, and the voice ends with the release. A One-shot under an Envelope of its own plays through. - A note ending before attack and decay releases from the level it has reached. Chrome holds it with cancelAndHoldAtTime, Firefox gets the level worked out from the shape. - New port type "envelope" (coral). It fits only a number input that says it can follow one (PortDef.followsEnvelope): Filter cutoff and resonance, Pitch, Gain, the EQ bands and Mix. Not the Delay, not the Envelope's own numbers. portsMeet() decides it for ConnectCommand, the drag and the drawn edges. - On the audio thread every Envelope of a note is one ConstantSourceNode. A number it moves gets the curve through a WaveShaper, in equal ratios for a cutoff and a gain. A number an Envelope moves is no longer reached by a parameter. - Filter (sound FX and instrument): low-, high- or band-pass, cutoff in Hz, resonance 0 to 1 as a Q. A low- or high-pass is flat at 0 and rises 20 dB at 1, a band-pass goes from Q 0.7 to 20. - Stop sound with "let ring" lets a note with an Envelope fall away in its release. Without it, and with Stop in the tab, it is cut. - The same note again during a release is a voice of its own. - The Envelope's numbers are set when the note starts. They can come from velocity or a parameter, later changes do not bend the note. Tests: - envelope.test.ts (new, 12): curve, ratios, Filter Q, compiling an Envelope, its value into each number, a Delay refused - sound-library +7: attack and decay on the clock, release from the level reached, One-shot held, Stop sound with and without let ring, a cutoff and a pitch moved by the curve - e2e 34: ALL PASSED, 50 checks (+2). Offline in Chrome the curve rendered 0.5 / 1 / 0.5005 at 0.05 / 0.1 / 0.3 s, released at 0.5 s it was 0.0158 at 0.65 s and 0.0005 at 0.8 s, released mid-attack it fell from 0.5 to 0.05 in 0.1 s. A Gain moved 0.25 to 1 was 0.5 halfway. A looped note of 0.2 s with a release of 1 s was gone after 1.32 s. - Five counter-checks (release end, One-shot hold, the follows check, ratios, pitch sum) failed 3, 1, 1, 2 and 2 tests. - Gate on melektaus-atx: CHECK EXIT 0, 245 files, 3812 tests 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.