Building a curve by mouse alone was fiddly: there was no way to put a point on an exact value, no grid, and the running preview could not be stopped at a chosen moment. The hand cursor over points also looked like a link instead of a drawing tool. - Number fields t and v in the header show the selected point. Typing or dragging on them goes through the same rules as a mouse drag, so points never overtake and handles stay clamped. One undo step each. t is greyed out on the two end points. - The magnet button from Vector art snaps points and handles to a 0.05 grid in t and v, when placing on free space and when dragging. - Points and handles keep the default arrow in the curve tab and in Vector art. The pixel art palette dropped pointer as well, which is beyond the issue. Collider corners never had it. - The preview now starts off. A vertical time line with a knob under the t axis sets t when dragged sideways. Dragging the dot on the rail jumps to the first t where the curve reaches that value, or to the closest one if it never does. - The rules are pure functions in curveView.ts (withCurvePointSet, snappedToGrid, shareAtValue, previewSecondsAt), the canvas only calls them. Tests: - ./check.sh: 180 files, 2616 tests, CHECK EXIT 0 - GM_STEPS=1,47,53: ALL PASSED, 87 checks - 4 new unit tests in curve-view.test.ts, 4 new e2e checks in 53 (53h-53k) and 1 in 47, all with real mouse and keyboard - Counter-probes bite: without "first t" 1 unit test fails, with pointer, no snap, no field commit, no scrub or preview on 5 browser checks fail, pointer in Vector art fails the new 47 check Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
92 lines
6.5 KiB
Markdown
92 lines
6.5 KiB
Markdown
# 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.
|
||
|
||
```bash
|
||
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:
|
||
|
||
```bash
|
||
node tools/seed-e2e.mjs && node tools/e2e.mjs # the editor, 1477 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](https://git.nockal.com/meleki/game-maker/wiki/Development).
|
||
|
||
## Documentation
|
||
|
||
| Page | What it covers |
|
||
|---|---|
|
||
| [Concepts](https://git.nockal.com/meleki/game-maker/wiki/Concepts) | Assets, scene objects, overrides, play mode, the camera, the console |
|
||
| [Accounts](https://git.nockal.com/meleki/game-maker/wiki/Accounts) | Signing in and out, the accounts, who a project belongs to, what the check tools need |
|
||
| [Scenes](https://git.nockal.com/meleki/game-maker/wiki/Scenes) | The edited scene, the start scene, and switching scenes from a graph |
|
||
| [Scene editing](https://git.nockal.com/meleki/game-maker/wiki/Scene-editing) | Placing, z-order, hierarchy, the editor offset |
|
||
| [Behaviors](https://git.nockal.com/meleki/game-maker/wiki/Behaviors) | Node graphs: variables, the node set, structs and lists, loops, nesting, editing |
|
||
| [Colliders](https://git.nockal.com/meleki/game-maker/wiki/Colliders) | Shapes (box, circle, capsule, polygon), collision events, blocking movement, one-way colliders and raycasts |
|
||
| [Physics](https://git.nockal.com/meleki/game-maker/wiki/Physics) | Rigidbodies, the collider material, gravity, the fixed step |
|
||
| [Textures](https://git.nockal.com/meleki/game-maker/wiki/Textures) | Images, frames, nine-slice, the filter, upload limits |
|
||
| [Vector art](https://git.nockal.com/meleki/game-maker/wiki/Vector-Art) | Pictures drawn from shapes: the pen, curves, gradients and texture fills, combining shapes |
|
||
| [Pixel art](https://git.nockal.com/meleki/game-maker/wiki/Pixel-Art) | Pictures painted pixel by pixel: the palette, the tools, layers and frames |
|
||
| [Fonts](https://git.nockal.com/meleki/game-maker/wiki/Fonts) | Font assets, the picker, what a text falls back to |
|
||
| [Sounds](https://git.nockal.com/meleki/game-maker/wiki/Sounds) | Sound assets and `Play sound` |
|
||
| [Animations](https://git.nockal.com/meleki/game-maker/wiki/Animations) | Animation assets and the Animation tab |
|
||
| [Curves](https://git.nockal.com/meleki/game-maker/wiki/Curves) | Easings drawn by hand, the Curve tab, using one on a key or a `Lerp` |
|
||
| [Shaders](https://git.nockal.com/meleki/game-maker/wiki/Shaders) | Shader graphs a sprite wears, their node set, the properties they declare |
|
||
| [Particles](https://git.nockal.com/meleki/game-maker/wiki/Particles) | Particle graphs: a particle as a function of its age |
|
||
| [State machines](https://git.nockal.com/meleki/game-maker/wiki/State-machines) | The asset, named transitions, `State branch`, `Set state` and `State transition` |
|
||
| [Containers](https://git.nockal.com/meleki/game-maker/wiki/Containers) | Templates, instances, screens |
|
||
| [Tiles](https://git.nockal.com/meleki/game-maker/wiki/Tiles) | The tile asset, plain tiles and the two autotile kinds, the pictures as animation steps, the Tile tab |
|
||
| [Tilemaps](https://git.nockal.com/meleki/game-maker/wiki/Tilemaps) | The tilemap asset, painting in the scene view, layers, what it looks like in the game |
|
||
| [Plugins](https://git.nockal.com/meleki/game-maker/wiki/Plugins) | Extending the editor: the plugin file, how it is loaded, switching one on and off, API v1 |
|
||
| [Keyboard](https://git.nockal.com/meleki/game-maker/wiki/Keyboard) | Every shortcut |
|
||
| [Architecture](https://git.nockal.com/meleki/game-maker/wiki/Architecture) | Stack, source layout, the rules that keep it organised |
|
||
| [Development](https://git.nockal.com/meleki/game-maker/wiki/Development) | Commands, the e2e suite, the example games, CI |
|
||
| [API](https://git.nockal.com/meleki/game-maker/wiki/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](https://git.nockal.com/meleki/game-maker/wiki) page.
|