adminandClaude Opus 5.5
393b8ec7f9
The built-in eases cover the usual shapes, but a game often wants its own: a coin that bounces twice, a door that overshoots and settles. A new asset type holds such a curve, and keys and the Lerp node can pick it instead of a built-in ease. - New asset type "curve": points like in Vector art, x is t and y is the value. A new curve is the straight line from (0, 0) to (1, 1). - One pure evaluation in src/core/model/curve.ts serves the timeline preview, the running game and the Lerp node. - The curve always has one value per t. The end points stay at t 0 and 1, points cannot pass each other, and a handle that reaches past its neighbour is shortened along its direction. Loading a hand-edited file applies the same rules. - Curve tab: click on the line to insert a point that keeps the shape, click on free space to put one there, drag points and handles, double-click or Delete removes, Alt-click toggles round and sharp. Every step is one undo step. - Presets: all 30 built-in eases plus Linear, fitted with adaptive subdivision. Each stays within 0.4 % of the built-in ease. - Preview: a dot runs along the curve once a second, a second dot shows only the value. The Preview button stops it. - Animation keys get "Curve" under Easing with a curve picker. Lerp gets "Curve" under Ease, and its result may overshoot b. - A missing or unpicked curve runs linear. The inspector says so, the node shows it as a problem, and deleting a used curve warns with the number of keys and Lerp nodes. Tests: - ./check.sh: 180 files, 2612 tests, CHECK EXIT 0 - GM_STEPS=1-6,25,53: ALL PASSED, 309 checks - New e2e module 53 with 13 checks, all with the real mouse. Expected values come from its own Bezier evaluation. - Counter-checks bite: without Bezier evaluation 4 unit tests fail, without handle clamping 2. In the browser, a key that cannot find its curve, a click that sets no point and a handle drag that moves the point all turn checks red. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
6.5 KiB
6.5 KiB
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, collider, rigidbody, container, texture, vector art, pixel art, palette, font, sound, animation, state machine, shader, particles, variables, tile, tilemap) 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.
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, 1472 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 |
| 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.