adminandClaude Opus 5.5
1aa824ecb4
A Load scene destroyed every object of the old scene. A player, a HUD or a music object had to be built again in each scene, with its state pushed through shared variables. A top-level object with the new switch Keep on scene load now travels into the next scene as the same entity, with everything below it. - The switch is a common property right under Enabled, off by default, on the asset and on a placed object. The inspector shows the row on top-level objects of a scene only, as answered in the issue. - runtime/keptObjects.ts holds the rules as pure functions. keptEntities picks what travels, objectsToBring copies the stored objects as the run parents them, and bringObjects puts them into the next scene. - World.instantiate takes a handed entity as it is instead of making one. The next syncToModel then writes the run's values into the scene. - BehaviorSystem.release takes the running instances out before the old world is destroyed, and the next system adopts them. They hear no On destroy and no second On start, and their sounds play on. - PhysicsSystem.resume gives a dynamic body the velocity and spin it had. - Duplicates: the object brought along wins. The next scene does not build its own object with the same id, which is the way back into the scene the object came from. - Decided here: the next scene does not build a top-level object of the same asset that is kept itself either. The issue only names the id. With the id alone a level that places its own player would hold two after a swap. - Decided here: kept objects land behind the scene's own, the switch is no animation row, and collisions are found anew. A finding, fixed along with it: Load scene did not build a scene as it is stored, but as the run had left it. A moved object stayed moved and a destroyed one stayed gone. The way back into a scene needs a clean build. - GameRun copies a scene's objects and groups before it first builds it and puts them back before it builds it again. - GameRun.end puts every such scene back. The player calls it on stop, so spawned objects no longer stay for "Click to play again". - The consequence: an edit made in a scene during Play is gone the next time that scene is loaded. Tests: - Gate: 199 files, 2944 tests (2929 + 15), exit 0 - e2e, full run: 1625 checks passed (1619 + 6), exit 0 - Smokes: 24 / 19 / 21, exit 0 - 15 unit tests in tests/core/keep-on-scene-load.test.ts - Six e2e checks in module 35: the switch is set with a real mouse, the child has no row, the object is in the new scene, its counter still reads 1, its sound plays on, and the stored scenes are unchanged after Stop - Eleven tests with fixed row lists only count the new schema row - 16 unit counter-probes all fail tests, run on stein2. One did not fail at first (same id not left out), it has its own test now. - The browser counter-probe fails 4 of the 6 new checks - Not looked at in the browser: the switch as a port of the Properties node, and a released game with a kept object Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
6.8 KiB
6.8 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, 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, 1625 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.