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melonjs/melonjs-3d-assets

Utilisez cette compétence lors du chargement de modèles 3D dans melonJS — scènes glTF et GLB, modèles OBJ/MTL, matériaux, lumières importées, animation de nœuds, ombres au sol et instanciation GPU. Couvre les options level.load, y compris le drapeau async, la conversion rightHanded, et exactement ce que le chargeur supporte ou non.

Qu'est-ce que melonjs-3d-assets ?

Cette compétence est conçue pour les développeurs utilisant melonJS afin de charger efficacement des actifs 3D. Elle couvre les formats glTF, GLB, OBJ et MTL, ainsi que les fonctionnalités avancées telles que l'instanciation GPU via l'extension EXT_mesh_gpu_instancing, les lumières ponctuelles importées (KHR_lights_punctual), le skinning, l'animation de nœuds et les ombres au sol. Elle détaille précisément les options de la méthode level.load, y compris l'utilisation du drapeau 'async' pour le chargement asynchrone, la conversion 'rightHanded' pour les modèles exportés depuis Blender, et les limites de ce que le chargeur supporte (par exemple, pas de compression Draco, pas de textures KTX2). Cette compétence est utile pour tout projet nécessitant l'intégration d'actifs 3D externes dans melonJS, que ce soit pour des jeux, des visualisations ou des applications interactives, en fournissant une guidance claire pour éviter les pièges courants et optimiser le rendu.

Compatible avec~Claude Code~Codex CLI~Cursor
npx skills add https://github.com/melonjs/melonJS/tree/master/packages/melonjs/skills/melonjs-3d-assets
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Documentation

Que fait melonjs-3d-assets ?

Utilisez cette compétence lors du chargement de modèles 3D dans melonJS — scènes glTF et GLB, modèles OBJ/MTL, matériaux, lumières importées, animation de nœuds, ombres au sol et instanciation GPU. Couvre les options de level.load, y compris le drapeau async, la conversion rightHanded, et exactement ce que le chargeur supporte ou non. Se déclenche sur : glTF, gltf, glb, OBJ, MTL, modèle 3D, getGLTF, getOBJ, getMTL, GLTFModel, GLTFScene, level.load glb, rightHanded, lightIntensityScale, castGroundShadow, shadowGroundY, EXT_mesh_gpu_instancing, KHR_lights_punctual, skinning, export Blender, actif 3D.

Individual skills in this repo

This repo contains 10 individual skills — each has its own dedicated page.

melonjs/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-down/+Z-forward convention that is the inverse of OpenGL, the cameraClass opt-in, clip planes, and what does not work on the Canvas fallback. Triggers on: Camera3d, Mesh, InstancedMesh, Sprite3d, Light3d, billboard, glTF, glb, 3D, 2.5D, depth, cameraClass, fov, setClipPlanes, setFog, fog, distance fog, height fog, heightFalloff, transparent, transparency, alpha, blendMode, fade, castGroundShadow, lit.

melonjs/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 drawing shapes, lines and gradients inside a custom draw(). Covers world versus screen coordinate conversion, clipping and masking, and baking with CanvasRenderTarget. Triggers on: Camera2d, viewport, follow, setBounds, shake, fadeIn, fadeOut, worldToLocal, localToWorld, colorMatrix, renderer.fill, renderer.stroke, Rect, Ellipse, Polygon, Line, Gradient, clipRect, mask, CanvasRenderTarget, NoiseTexture2d.

melonjs/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 cameras, writing a custom dual-language GLSL/WGSL effect, the screen_texture builtins, and why effects silently do nothing on the Canvas fallback. Triggers on: ShaderEffect, addPostEffect, removePostEffect, getPostEffect, VignetteEffect, GlowEffect, BlurEffect, PixelateEffect, ScanlineEffect, shader, GLSL, WGSL, uniform, setUniform, setTexture, setTime, blendMode, colorMatrix, screen_texture, toFrameTexture, post effect, filter.

melonjs/melonjs-loading-assets

Use this skill for loading and managing game assets in melonJS — the resource descriptor format, the full asset type list, preload versus load, retrieving loaded assets, base URLs and cross-origin settings, and the loading screen. Triggers on: loader, loader.preload, loader.load, resources, getImage, getJSON, getTMX, getGLTF, getVideo, getFont, setBaseURL, setOptions, crossOrigin, withCredentials, credentials, cookies, authenticated assets, CORS, asset, preload, LOADER_COMPLETE, loading screen, unload.

melonjs/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 CanvasRenderTarget, instancing, culling and alwaysUpdate, the debug plugin, and where the real costs are. Triggers on: performance, slow, frame rate, fps, lag, pool, pool.register, pool.pull, batching, draw calls, InstancedMesh, culling, alwaysUpdate, inViewport, CanvasRenderTarget, optimise, profiling, debug plugin, memory.

melonjs/melonjs-physics

Use this skill for collision, physics bodies, movement, and spatial queries in melonJS — the built-in SAT world and the planck/matter adapters. Covers bodyDef vs Body, collision types and masks, the collision callback family and their firing rules, raycast/queryAABB/querySphere, and the behaviour differences between adapters. Triggers on: Body, bodyDef, collision, collisionType, collisionMask, onCollision, onCollisionStart, onCollisionActive, raycast, queryAABB, querySphere, PlanckAdapter, MatterAdapter, gravity, velocity, applyForce, isGrounded, SAT.

melonjs/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 draw order. Covers the pos-relative draw contract, isKinematic and input, addPostEffect vs the deprecated shader property, and z-ordering. Triggers on: Renderable, extends Renderable, draw(, update(, isKinematic, pointerEvent, registerPointerEvent, onClick, addPostEffect, removePostEffect, ShaderEffect, addChild, z-order, anchorPoint, floating.

melonjs/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 WebGL 2 to Canvas fallback ladder, what each backend supports, capability detection, and the subsystems that warn once and then stop working on Canvas. Triggers on: video.AUTO, video.WEBGPU, video.WEBGL, video.CANVAS, renderer.type, supportsDepthBuffer, shaderLanguage, WebGPU, WebGL2, Canvas fallback, context loss, backen

melonjs/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 versus the constructor, state.set before state.change, the camera and world lifecycle per stage, and pause-aware timing. Triggers on: Stage, state, state.set, state.change, state.transition, state.pause, onResetEvent, onDestroyEvent, onActivateEvent, onDeactivateEvent, PLAY, MENU, LOADING, update loop, GAME_UPDATE, timer, setTimeout, setInterval, Tween, freeze.

melonjs/melonjs-ui-and-text

Use this skill for HUDs, buttons, menus, dialogue panels and on-screen text in melonJS. Covers UIBaseElement/UISpriteElement/UITextButton, Draggable and DropTarget, the floating screen-space container pattern, Text and BitmapText, web font loading, and NineSliceSprite panels. Triggers on: UI, HUD, button, UIBaseElement, UISpriteElement, UITextButton, Draggable, DropTarget, menu, dialogue, Text, BitmapText, font, fontface, wordWrapWidth, NineSliceSprite, score display, floating.

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