A link could only be removed through the menu of its port, and the line itself took no input. A transition of a state machine could only be deleted in the list of the inspector. Now the line is the handle, in a behavior's graph and between states alike. - A click on a line selects that link and draws a halo behind it. A press counts within 6 screen pixels of the line, and where two cross the one drawn last wins. - Ctrl-click or Shift-click adds a link or takes it away. The rubber band takes every line it crosses, into the same selection as the nodes and boxes it caught. - Delete or Backspace removes what is picked as one undo step. A right-click on a line offers Hide link and Delete link. - The inspector shows a picked link: the node and port at each end and the type it carries, with Hide link and Delete link below. For several it says how many. - The arrow of a transition is picked the same way, on its name too. Delete or a right-click with Delete transition removes it. - The menu of a port is unchanged, Disconnect included, as answered in the issue. - editor/graph/edgeHit.ts holds the hit test as pure functions, and editor/inspector/edgeSection.ts builds the section. The selection has a new kind edge, and node and annotation carry edgeIds. Decided here: - A hidden link has no line and is never picked this way, also while it is shown on loan. Its mark at the port stays its handle. - The menu of a line speaks about the whole selection, like the menu of a box. With nodes or boxes held alongside it reads Delete N items. - Hiding picked links lets go of them, since no line is left. - A link wins over the box it crosses, and a mark wins over a link. - A transition has no Hide entry. - With nodes or boxes in the selection the inspector keeps showing the node or box, not the link. Tests: - Gate: 201 files, 2982 tests (2967 + 15), exit 0 - e2e, full run: 1635 checks passed (1629 + 6), exit 0 - Smokes: 24 / 19 / 21, exit 0 - The full run was done for exactly this state. - 15 unit tests in tests/editor/edge-selection.test.ts - Six e2e checks with a real mouse, block 6z-xi in module 06 and 26e7 in module 26 - 12 unit counter-probes all fail tests, run on stein2 - Three browser counter-probes fail, the build went through each time: no hit on the line, no halo, a band that skips lines - Screenshots of a picked link and a picked transition 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, 1635 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.
