adminandClaude Opus 5.5
2c19c89878
Variables of a behavior, the fields of a struct, the ports of a start or end node and the items of a list could only be added and removed. Changing their order meant removing and adding them again. Now each of them is dragged by the mark in front of its row. - sortBlocks (ui/blockDrag.ts) makes the rows of one column sortable. A block is every row it covers, so a struct moves with its fields and a list item with its nested list. The block is dimmed while it is carried, an accent line shows where it lands, and a scrolled panel follows the pointer at its edge. Less than 4 px stays a click. - The arithmetic is pure and lives in ui/sortable.ts: blockGap, gapLineY, dropSlot and edgeScroll. dropIndex of the tile strip moved there too, so the reorder maths sits in one file. - MoveVariableCommand, MoveStructFieldCommand and MovePortCommand build on the existing MoveCommand. Undo moves back. - Lists need no command. InlineList replaces the list as a whole, as it does for every other edit of its items. - The grip is the kind mark, for a list item its number. Moving only happens among siblings: a field stays in its struct. - On a Struct asset the move runs through WithStructTypes. Typed variables, Pack/Expand ports and split outputs follow the new order. - Values and edges hang on names, so only the order changes. Nodes running a behavior read their ports from the start node, the new order reaches them without a copy. - Not sortable by design: the variables of a placed object, the fields of a typed struct (moved on the Struct asset) and the picked ports of Variables/Properties nodes. - Test hook __gm.inspectorMark(label) finds the mark of a row. Tests: - Gate on melektaus-atx: 235 files, 3572 tests, CHECK EXIT 0 (+9). - tests/core/reorder.test.ts: a variable, a field two levels deep, a Struct asset reaching a typed variable and Pack, and start ports reaching the calling node with edges and result kept. - e2e 22: ALL PASSED, 39 checks (+4, sum 1739). 22f-iii drags a variable past a struct of several rows, then a field inside it. - Counter-probes: dropSlot by top edge instead of middle and a field move that ignores its path fail 3 unit tests. With sortBlocks switched off, the three order checks of 22f-iii fail. 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, 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, 1739 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.