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melonjs/melonjs-3d

Use esta skill para tudo que é 3D ou 2.5D no melonJS — Camera3d, Mesh, InstancedMesh, Sprites 3D (billboards), Light3d, sombras no chão, cenas glTF/GLB e ordenação por profundidade. Abrange a convenção Y-down/+Z-forward (inversa do OpenGL), a adoção opcional do cameraClass, planos de recorte e o que não funciona no fallback Canvas.

O que é melonjs-3d?

Esta skill cobre todos os recursos 3D e 2.5D do motor de jogo melonJS. Ela permite trabalhar com objetos como Camera3d, Mesh, InstancedMesh, Sprite3d (para billboards), Light3d, sombras projetadas no chão (ground shadows) e importação de modelos glTF/GLB. Também gerencia a ordenação por profundidade (depth sorting) de objetos transparentes. A skill explica a convenção de coordenadas Y-para-baixo e Z-para-frente, que é oposta à do OpenGL, e detalha como ativar o cameraClass para usar a câmera 3D padrão. Além disso, cobre planos de recorte (clip planes), configuração de névoa (distance fog e height fog) e modos de mesclagem (blendMode). Importante: informa quais funcionalidades não funcionam no fallback do renderizador Canvas. A skill é acionada por termos como Camera3d, Mesh, Sprite3d, Light3d, billboard, glTF, 3D, profundidade, fov, clip planes, fog, transparência, alpha, blendMode, fade, sombras e iluminação.

Funciona com~Claude Code~Codex CLI~Cursor
npx skills add https://github.com/melonjs/melonJS/tree/master/packages/melonjs/skills/melonjs-3d
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Documentação

O que melonjs-3d faz?

Use esta skill para tudo que é 3D ou 2.5D no melonJS — Camera3d, Mesh, InstancedMesh, Sprites 3D (billboards), Light3d, sombras no chão, cenas glTF/GLB e ordenação por profundidade. Abrange a convenção Y-down/+Z-forward (inversa do OpenGL), a adoção opcional do cameraClass, planos de recorte e o que não funciona no fallback Canvas. Aciona-se com: Camera3d, Mesh, InstancedMesh, Sprite3d, Light3d, billboard, glTF, glb, 3D, 2.5D, profundidade, cameraClass, fov, setClipPlanes, setFog, fog, névoa por distância, névoa por altura, heightFalloff, transparente, transparência, alpha, blendMode, fade, castGroundShadow, lit.

Individual skills in this repo

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

melonjs/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 level.load options including the async flag, the rightHanded conversion, and exactly what the loader does and does not support. Triggers on: glTF, gltf, glb, OBJ, MTL, 3D model, getGLTF, getOBJ, getMTL, GLTFModel, GLTFScene, level.load glb, rightHanded, lightIntensityScale, castGroundShadow, shadowGroundY, EXT_mesh_gpu_instancing, KHR_lights_punctual, skinning, Blender export, 3D asset.

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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