melonjs/melonJS

Agent skills in the GitHub repository melonjs/melonJS, each with its code score out of 100.

A modern & fully featured HTML5 game engine (2D & 3D) for JavaScript/TypeScript, with WebGL/WebGPU rendering, built-in physics, Tiled map & glTF support and WebAudio.

Repository score

56 / 100 C

Skills

25

Verified

0

Average skill score

52

GitHub stars

6,500

License

MIT

Open melonjs/melonJS on GitHub

25 skills in this repository

1. melonjs-20-migration

   Use this skill when writing melonJS code that may be based on pre-20.x knowledge, when migrating a game from melonJS 19.x or earlier, or when an API you expected does not exist. C…

   65C
2. melonjs-renderables

   Use this skill when subclassing Renderable, writing a custom draw() method, handling pointer or click events on game objects, applying post effects and shaders, or controlling dra…

   64C
3. melonjs

   Use this skill FIRST for any melonJS task; it routes to the right specialised skill and lists the companion packages. melonJS is an open-source 2D, 2.5D and 3D HTML5 game engine r…

   58C
4. melonjs-display-and-scaling

   Use this skill when a melonJS game looks blurry, soft, shimmering or cropped, or when choosing how the canvas fills its page. Covers the design resolution, scale and scaleMethod,…

   58C
5. melonjs-getting-started

   Use this skill when starting or bootstrapping a melonJS game, creating the Application, choosing a renderer, or setting up the first scene. Covers the mandatory async init, the wo…

   57C
6. melonjs-audio

   Use this skill for sound and music in melonJS — loading audio, playing effects, background tracks, audio sprites, volume and muting, spatial audio, procedural tone/noise generatio…

   56C
7. melonjs-renderer-backends

   Use this skill when a feature works on one machine and not another, when choosing or pinning a renderer, or when writing code that must degrade gracefully. Covers the WebGPU to We…

   55C
8. melonjs-camera-and-drawing

   Use this skill for camera control and immediate-mode drawing in melonJS — following a target, viewport bounds, shake and fade, secondary cameras and what each one draws, and drawi…

   54D
9. melonjs-deployment

   Use this skill when packaging, shipping or scaffolding a melonJS game — starting a project with create-melonjs, building for the web, wrapping as a native app with Capacitor or Co…

   53D
10. melonjs-lighting

    Use this skill for 2D dynamic lighting in melonJS — Light2d, ambient light on a Stage, multiple lights, and per-pixel normal-mapped sprites authored in SpriteIlluminator. Covers s…

    53D
11. melonjs-events

    Use this skill for the melonJS event bus and lifecycle hooks — subscribing to engine events, the per-frame and per-state event names, renderable lifecycle callbacks, and how to un…

    52D
12. melonjs-physics

    Use this skill for collision, physics bodies, movement, and spatial queries in melonJS — the built-in SAT world and the planck, matter and Rapier adapters. Covers bodyDef vs Body,…

    52D
13. melonjs-3d

    Use this skill for anything 3D or 2.5D in melonJS — Camera3d, Mesh, InstancedMesh, Sprite3d billboards, Light3d, ground shadows, glTF/GLB scenes, and depth sorting. Covers the Y-d…

    51D
14. melonjs-performance

    Use this skill when a melonJS game drops frames, allocates heavily, or needs to scale to many objects. Covers object pooling, draw-call batching, atlases, baking with CanvasRender…

    51D
15. melonjs-3d-assets

    Use this skill when loading 3D models into melonJS — glTF and GLB scenes, OBJ/MTL models, materials, imported lights, node animation, ground shadows and GPU instancing. Covers lev…

    50D
16. melonjs-plugins

    Use this skill when adding a melonJS plugin or adapter — the debug panel, Spine skeletal animation, compressed Tiled map support, on-screen touch controls, Capacitor packaging — o…

    50D
17. melonjs-sprites-and-animation

    Use this skill when creating sprites, playing frame animations, or working with texture atlases in melonJS. Covers Sprite construction from a plain image or an atlas region, addAn…

    49D
18. melonjs-tilemaps

    Use this skill for Tiled maps in melonJS — loading TMX/TSX levels, spawning entities from Tiled objects, collision shapes authored in Tiled, isometric and hexagonal maps, and imag…

    49D
19. melonjs-particles-and-trails

    Use this skill for particle effects and motion trails in melonJS — ParticleEmitter configuration, burst versus stream emission, the referenceSpace frame of reference introduced in…

    47D
20. melonjs-input

    Use this skill for keyboard, pointer, mouse, touch and gamepad input in melonJS. Covers the bindKey action indirection, registerPointerEvent on regions, the isKinematic requiremen…

    46D
21. melonjs-loading-assets

    Use this skill for loading and managing game assets in melonJS — the resource descriptor format, the full asset type list, organising a multi-level game's assets as bundles (an as…

    45D
22. melonjs-ui-and-text

    Use this skill for HUDs, buttons, menus, options screens, dialogue panels, progress bars and on-screen text in melonJS. Covers UIBaseElement/UISpriteElement/UITextButton, UICheckb…

    45D
23. melonjs-math

    Use this skill for vector and matrix maths in melonJS — Vector2d, Vector3d, their observable variants, Matrix2d, Matrix3d, and the math utility functions. Covers which methods mut…

    44D
24. melonjs-scenes-and-state

    Use this skill for scene structure and game flow in melonJS — Stage subclasses, the state manager, transitions, pausing, the update loop, timers and tweens. Covers onResetEvent ve…

    44D
25. melonjs-effects-and-shaders

    Use this skill for post-processing effects, custom shaders, blend modes and colour grading in melonJS. Covers the built-in ShaderEffect presets, addPostEffect on renderables and c…

    43D

Scores come from a snapshot of 300 public GitHub repositories taken on 12 November 2026. Every score is the result of fixed checks run by code; no AI is involved. How scoring works.