adminandClaude Opus 5
d7a2521ca7
Until now every port of "First not empty" was grey and typeless, so the
editor could not tell you what actually travels through the node. The
output is now typed as soon as both inputs agree, and every any-input is
painted in the colour of its own edge. Nothing changes at runtime.
- A NodeDef can declare which of its ports carry the same value
(`sharedType: { inputs, outputs }`). The rule itself lives as a pure
function `agreedType` in `src/core/graph/portTypes.ts`.
- Only the output inherits. It becomes the shared type when every input
of the group is connected and they all carry the same type, otherwise
it stays `any`.
- The inputs stay `any` on purpose. `canConnect` checks against the port
type and a busy input is replaced by the new edge, so a typed `a`
could never be re-plugged with a text without disconnecting first.
- Chains do not propagate. When looking up what feeds an input, a node
of the same kind reports the `any` it is registered with, so two of
them in a row stay untyped and a data cycle cannot ask itself in a
circle.
- An edge that the new type makes invalid stays where it is and turns
red. `EdgeLayer` already paints a mismatching edge with `danger`,
nothing is disconnected on its own.
- New `PortDef.paintType`: colour only, never truth. It is set in
`drawnDef` and read in `NodeView.redraw`, so `canConnect`, the
interpreter and the compiler keep seeing `any`. Every connected
any-input is painted, not just members of a `sharedType` group; ghost
ports keep their hollow red look.
- The pin now matches the edge that ends in it, because both take the
colour from the resolved output type of the neighbour. Mixed sources
therefore show two colours, which explains why the output stays grey.
- New hooks `__gm.graph.portTypes(id)`, `__gm.graph.edgeColor(id)` and
`__gm.themeColor(name)`. `portTypes` reports type and paint colour
separately so the type checks do not silently become colour checks.
Findings:
- `resolveDef` only appends derived ports to the registered ones, so a
fixed port cannot be retyped that way -- it would appear twice. The
shared type is therefore resolved before the ports are built.
- Answer 5 of the issue (inline field follows the type) has no case left
under variant A: an unconnected input stays `any` and keeps its text
field.
- `Item at`, `Join` and `Equals` do not profit: `Item at` has no
any-input, the other two have fixed outputs. The next candidates are
the shader arithmetic nodes, which were left alone.
Tests:
- ./check.sh -> 143 files, 2127 tests, exit 0 (was 142 / 2113)
- GM_STEPS=1-6 fresh -> ALL PASSED, 245 checks (was 242), 9 of them new
- 14 new unit tests in tests/core/shared-port-type.test.ts
- 9 new e2e checks in block 6z, one of them a pixel check straight on
the pin via pixelAt + themeColor
- Counter-probes all bite: filtering unconnected inputs out of
`agreedType` fails 3 unit tests, ignoring `inherit` fails 1, killing
the derivation in the bundle fails exactly the 2 expected e2e checks,
and never setting `paintType` fails 4 unit tests plus the 3 pin
checks (#bdbdbd instead of #e6a8ff / #6fcf97)
- Screenshot read: `a` pink, `b` green, output `value` grey, edges in
the same colours
- Check total 1302 (1299 + 3), 1293 was measured by CI at 1a3babf
Co-Authored-By: Claude Opus 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, collider, rigidbody, container, texture, 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, 1302 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 |
| Fonts | Font assets, the picker, what a text falls back to |
| Sounds | Sound assets and Play sound |
| Animations | Animation assets and the Animation tab |
| 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.