Skill

Review

Audit score 70

aframe-webxr

freshtechbro/claudedesignskills

Source View on skills.sh

How to install aframe-webxr

npx skills add https://github.com/freshtechbro/claudedesignskills --skill aframe-webxr

Claude Code

Cursor

Windsurf

Cline

Full instructions (SKILL.md)

Source of truth, from freshtechbro/claudedesignskills.

name: aframe-webxr description: Declarative web framework for building browser-based 3D, VR, and AR experiences using HTML and entity-component architecture. Use this skill when creating WebXR applications, VR experiences, AR experiences, 360-degree media viewers, or immersive web content with minimal JavaScript. Triggers on tasks involving A-Frame, WebXR, VR development, AR development, entity-component-system, declarative 3D, or HTML-based 3D scenes. Built on Three.js with accessible HTML-first approach.

A-Frame WebXR Skill

When to Use This Skill

Build VR/AR experiences with minimal JavaScript
Create cross-platform WebXR applications (desktop, mobile, headset)
Prototype 3D scenes quickly with HTML primitives
Implement VR controller interactions
Add 3D content to web pages declaratively
Build 360° image/video experiences
Develop AR experiences with hit testing

Core Concepts

1. Entity-Component-System (ECS)

A-Frame uses an entity-component-system architecture where:

Entities are containers (like <div> in HTML)
Components add functionality/appearance to entities
Systems provide global functionality

<!-- Entity with components -->
<a-entity
  geometry="primitive: box; width: 2"
  material="color: red; metalness: 0.5"
  position="0 1.5 -3"
  rotation="0 45 0">
</a-entity>

Primitives are shortcuts for common entity + component combinations:

<!-- Primitive (shorthand) -->
<a-box color="red" position="0 1.5 -3" rotation="0 45 0" width="2"></a-box>

<!-- Equivalent entity-component form -->
<a-entity
  geometry="primitive: box; width: 2"
  material="color: red"
  position="0 1.5 -3"
  rotation="0 45 0">
</a-entity>

2. Scene Setup

Every A-Frame app starts with <a-scene>:

<!DOCTYPE html>
<html>
  <head>
    <script src="https://aframe.io/releases/1.7.1/aframe.min.js"></script>
  </head>
  <body>
    <a-scene>
      <!-- Entities go here -->
      <a-box position="-1 0.5 -3" color="#4CC3D9"></a-box>
      <a-sphere position="0 1.25 -5" radius="1.25" color="#EF2D5E"></a-sphere>
      <a-cylinder position="1 0.75 -3" radius="0.5" height="1.5" color="#FFC65D"></a-cylinder>
      <a-plane position="0 0 -4" rotation="-90 0 0" width="4" height="4" color="#7BC8A4"></a-plane>
      <a-sky color="#ECECEC"></a-sky>
    </a-scene>
  </body>
</html>

The scene automatically injects:

Default camera (position: 0 1.6 0)
Look controls (mouse drag)
WASD controls (keyboard movement)

3. Camera Systems

Default Camera (auto-injected if none specified):

<a-entity camera="active: true" look-controls wasd-controls position="0 1.6 0"></a-entity>

Custom Camera:

<a-camera position="0 2 5" look-controls wasd-controls="acceleration: 50"></a-camera>

Camera Rig (for independent movement and rotation):

<a-entity id="rig" position="0 0 0">
  <!-- Camera for head tracking -->
  <a-camera look-controls></a-camera>

  <!-- Movement applied to rig, not camera -->
</a-entity>

VR Camera Rig with Controllers:

<a-entity id="rig" position="0 0 0">
  <!-- Camera at eye level -->
  <a-camera position="0 1.6 0"></a-camera>

  <!-- Left hand controller -->
  <a-entity
    hand-controls="hand: left"
    laser-controls="hand: left">
  </a-entity>

  <!-- Right hand controller -->
  <a-entity
    hand-controls="hand: right"
    laser-controls="hand: right">
  </a-entity>
</a-entity>

4. Lighting

Ambient Light (global illumination):

<a-entity light="type: ambient; color: #BBB; intensity: 0.5"></a-entity>

Directional Light (like sunlight):

<a-entity light="type: directional; color: #FFF; intensity: 0.8" position="1 2 1"></a-entity>

Point Light (radiates in all directions):

<a-entity light="type: point; color: #F00; intensity: 2; distance: 50" position="0 3 0"></a-entity>

Spot Light (cone-shaped beam):

<a-entity light="type: spot; angle: 45; intensity: 1.5" position="0 5 0" rotation="-90 0 0"></a-entity>

5. Materials and Textures

Standard Material:

<a-sphere
  material="color: #FF0000; metalness: 0.5; roughness: 0.3"
  position="0 1 -3">
</a-sphere>

Textured Material:

<a-assets>
  <img id="woodTexture" src="wood.jpg">
</a-assets>

<a-box material="src: #woodTexture" position="0 1 -3"></a-box>

Flat Shading (no lighting):

<a-plane material="shader: flat; color: #4CC3D9"></a-plane>

6. Animations

Property Animation:

<a-box
  position="0 1 -3"
  animation="property: rotation; to: 0 360 0; loop: true; dur: 5000">
</a-box>

Multiple Animations (use animation__* naming):

<a-sphere
  position="0 1 -3"
  animation__position="property: position; to: 0 3 -3; dir: alternate; loop: true; dur: 2000"
  animation__rotation="property: rotation; to: 360 360 0; loop: true; dur: 4000"
  animation__scale="property: scale; to: 1.5 1.5 1.5; dir: alternate; loop: true; dur: 1000">
</a-sphere>

Event-Based Animation:

<a-box
  color="blue"
  animation__mouseenter="property: scale; to: 1.2 1.2 1.2; startEvents: mouseenter"
  animation__mouseleave="property: scale; to: 1 1 1; startEvents: mouseleave"
  animation__click="property: rotation; from: 0 0 0; to: 0 360 0; startEvents: click">
</a-box>

7. Assets Management

Preload assets for better performance:

<a-scene>
  <a-assets>
    <!-- Images -->
    <img id="texture1" src="texture.jpg">
    <img id="skyTexture" src="sky.jpg">

    <!-- Videos -->
    <video id="video360" src="360video.mp4" autoplay loop></video>

    <!-- Audio -->
    <audio id="bgMusic" src="music.mp3" preload="auto"></audio>

    <!-- Models -->
    <a-asset-item id="tree" src="tree.gltf"></a-asset-item>

    <!-- Mixins (reusable component sets) -->
    <a-mixin id="redMaterial" material="color: red; metalness: 0.7"></a-mixin>
  </a-assets>

  <!-- Use assets -->
  <a-entity gltf-model="#tree" position="2 0 -5"></a-entity>
  <a-sphere mixin="redMaterial" position="0 1 -3"></a-sphere>
  <a-sky src="#skyTexture"></a-sky>
</a-scene>

8. Custom Components

AFRAME.registerComponent('rotate-on-click', {
  // Component schema (configuration)
  schema: {
    speed: {type: 'number', default: 1}
  },

  // Lifecycle: called once when component attached
  init: function() {
    this.el.addEventListener('click', () => {
      this.rotating = !this.rotating;
    });
  },

  // Lifecycle: called every frame
  tick: function(time, timeDelta) {
    if (this.rotating) {
      var rotation = this.el.getAttribute('rotation');
      rotation.y += this.data.speed;
      this.el.setAttribute('rotation', rotation);
    }
  }
});

<a-box rotate-on-click="speed: 2" position="0 1 -3"></a-box>

Common Patterns

Pattern 1: VR Controller Interactions

Problem: Enable object grabbing and manipulation in VR

Solution: Use hand-controls and custom grab component

<a-scene>
  <!-- VR Camera Rig -->
  <a-entity id="rig">
    <a-camera position="0 1.6 0"></a-camera>

    <a-entity
      id="leftHand"
      hand-controls="hand: left"
      laser-controls="hand: left">
    </a-entity>

    <a-entity
      id="rightHand"
      hand-controls="hand: right"
      laser-controls="hand: right">
    </a-entity>
  </a-entity>

  <!-- Grabbable objects -->
  <a-box class="grabbable" position="-1 1.5 -3" color="#4CC3D9"></a-box>
  <a-sphere class="grabbable" position="1 1.5 -3" color="#EF2D5E"></a-sphere>
</a-scene>

<script>
AFRAME.registerComponent('grabbable', {
  init: function() {
    var el = this.el;

    el.addEventListener('triggerdown', function(evt) {
      console.log('Grabbed by', evt.detail.hand);
      el.setAttribute('color', 'green');
    });

    el.addEventListener('triggerup', function(evt) {
      el.setAttribute('color', 'blue');
    });

    el.addEventListener('gripdown', function(evt) {
      // Attach object to controller
      var controllerEl = evt.detail.controller;
      controllerEl.object3D.attach(el.object3D);
    });

    el.addEventListener('gripup', function(evt) {
      // Detach from controller
      var sceneEl = el.sceneEl.object3D;
      sceneEl.attach(el.object3D);
    });
  }
});

// Apply grabbable component
document.querySelectorAll('.grabbable').forEach(el => {
  el.setAttribute('grabbable', '');
});
</script>

Pattern 2: 360° Image Gallery

Problem: Create an interactive 360° photo viewer

Solution: Use sky primitive and clickable thumbnails

<a-scene>
  <a-assets>
    <img id="city" src="city.jpg">
    <img id="forest" src="forest.jpg">
    <img id="beach" src="beach.jpg">
    <img id="city-thumb" src="city-thumb.jpg">
    <img id="forest-thumb" src="forest-thumb.jpg">
    <img id="beach-thumb" src="beach-thumb.jpg">
    <audio id="click-sound" src="click.mp3"></audio>
  </a-assets>

  <!-- 360 image sphere -->
  <a-sky id="image-360" src="#city" rotation="0 -130 0"></a-sky>

  <!-- Thumbnail menu -->
  <a-entity id="menu" position="0 1.6 -2">
    <a-entity class="link"
      geometry="primitive: plane; width: 0.7; height: 0.7"
      material="shader: flat; src: #city-thumb"
      position="-1 0 0"
      sound="on: click; src: #click-sound"
      event-set__mouseenter="scale: 1.2 1.2 1"
      event-set__mouseleave="scale: 1 1 1"
      event-set__click="_target: #image-360; material.src: #city">
    </a-entity>

    <a-entity class="link"
      geometry="primitive: plane; width: 0.7; height: 0.7"
      material="shader: flat; src: #forest-thumb"
      position="0 0 0"
      sound="on: click; src: #click-sound"
      event-set__mouseenter="scale: 1.2 1.2 1"
      event-set__mouseleave="scale: 1 1 1"
      event-set__click="_target: #image-360; material.src: #forest">
    </a-entity>

    <a-entity class="link"
      geometry="primitive: plane; width: 0.7; height: 0.7"
      material="shader: flat; src: #beach-thumb"
      position="1 0 0"
      sound="on: click; src: #click-sound"
      event-set__mouseenter="scale: 1.2 1.2 1"
      event-set__mouseleave="scale: 1 1 1"
      event-set__click="_target: #image-360; material.src: #beach">
    </a-entity>
  </a-entity>

  <!-- Camera with cursor for gaze interaction -->
  <a-camera>
    <a-cursor raycaster="objects: .link"></a-cursor>
  </a-camera>
</a-scene>

Pattern 3: AR Hit Testing (Place Objects in Real World)

Problem: Place virtual objects on detected real-world surfaces

Solution: Use ar-hit-test component

<a-scene
  webxr="optionalFeatures: hit-test, dom-overlay; overlayElement: #overlay"
  ar-hit-test="target: #furniture; type: footprint">

  <a-assets>
    <a-asset-item id="chair" src="chair.gltf"></a-asset-item>
  </a-assets>

  <!-- Object to place -->
  <a-entity id="furniture" gltf-model="#chair" scale="0.5 0.5 0.5"></a-entity>

  <!-- AR instructions overlay -->
  <div id="overlay" style="position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
                           background: rgba(0,0,0,0.7); color: white; padding: 15px;
                           border-radius: 8px; font-family: sans-serif;">
    <p id="message">Tap to enter AR mode</p>
  </div>
</a-scene>

<script>
const sceneEl = document.querySelector('a-scene');
const message = document.getElementById('message');

sceneEl.addEventListener('enter-vr', function() {
  if (this.is('ar-mode')) {
    message.textContent = '';

    this.addEventListener('ar-hit-test-start', function() {
      message.innerHTML = 'Scanning environment, finding surface.';
    }, { once: true });

    this.addEventListener('ar-hit-test-achieved', function() {
      message.innerHTML = 'Tap on the screen to place the object.';
    }, { once: true });

    this.addEventListener('ar-hit-test-select', function() {
      message.textContent = 'Object placed!';
      setTimeout(() => message.textContent = '', 2000);
    }, { once: true });
  }
});

sceneEl.addEventListener('exit-vr', function() {
  message.textContent = 'Tap to enter AR mode';
});
</script>

Pattern 4: Mouse/Gaze Interactions

Problem: Enable click interactions with desktop mouse or VR gaze

Solution: Use cursor component and raycaster

<a-scene>
  <!-- Interactive objects -->
  <a-box
    class="interactive"
    position="-1 1.5 -3"
    color="#4CC3D9"
    event-set__mouseenter="color: yellow"
    event-set__mouseleave="color: #4CC3D9"
    event-set__click="scale: 1.5 1.5 1.5">
  </a-box>

  <a-sphere
    class="interactive"
    position="1 1.5 -3"
    color="#EF2D5E"
    event-set__click="color: orange; scale: 2 2 2">
  </a-sphere>

  <a-plane position="0 0 -4" rotation="-90 0 0" width="10" height="10" color="#7BC8A4"></a-plane>

  <!-- Camera with cursor -->
  <a-camera position="0 1.6 0">
    <!-- Raycaster targets .interactive class -->
    <a-cursor
      raycaster="objects: .interactive"
      fuse="true"
      fuse-timeout="1500">
    </a-cursor>
  </a-camera>
</a-scene>

<script>
// Advanced click handling with JavaScript
document.querySelectorAll('.interactive').forEach(el => {
  el.addEventListener('click', function(evt) {
    console.log('Clicked:', this.id || this.tagName);
    console.log('Intersection point:', evt.detail.intersection.point);
  });
});
</script>

Pattern 5: Dynamic Scene Generation

Problem: Programmatically create and manipulate entities

Solution: Use JavaScript DOM manipulation

<a-scene>
  <a-camera position="0 1.6 5"></a-camera>
  <a-entity light="type: ambient; color: #888"></a-entity>
  <a-entity light="type: directional; color: #FFF" position="1 2 1"></a-entity>
</a-scene>

<script>
const scene = document.querySelector('a-scene');

// Create sphere
function createSphere(x, y, z, color) {
  const entity = document.createElement('a-entity');

  entity.setAttribute('geometry', {
    primitive: 'sphere',
    radius: 0.5
  });

  entity.setAttribute('material', {
    color: color,
    metalness: 0.5,
    roughness: 0.3
  });

  entity.setAttribute('position', {x, y, z});

  // Add animation
  entity.setAttribute('animation', {
    property: 'position',
    to: `${x} ${y + 1} ${z}`,
    dir: 'alternate',
    loop: true,
    dur: 2000
  });

  scene.appendChild(entity);
  return entity;
}

// Generate grid of spheres
for (let x = -3; x <= 3; x += 1.5) {
  for (let z = -5; z <= -2; z += 1.5) {
    const color = `#${Math.floor(Math.random()*16777215).toString(16)}`;
    createSphere(x, 1, z, color);
  }
}

// Listen to component changes
scene.addEventListener('componentchanged', function(evt) {
  console.log('Component changed:', evt.detail.name);
});

// Access Three.js objects directly
setTimeout(() => {
  const entities = document.querySelectorAll('a-entity[geometry]');
  entities.forEach(el => {
    el.object3D.visible = true; // Direct Three.js manipulation
  });
}, 1000);
</script>

Pattern 6: Environment and Skybox

Problem: Create immersive environments quickly

Solution: Use community components and 360 images

<html>
  <head>
    <script src="https://aframe.io/releases/1.7.1/aframe.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/@fern-solutions/aframe-sky-background/dist/sky-background.umd.min.js"></script>
    <script src="https://cdn.jsdelivr.net/gh/c-frame/aframe-extras@7.5.0/dist/aframe-extras.min.js"></script>
  </head>
  <body>
    <a-scene>
      <!-- Gradient sky -->
      <a-sky-background
        top-color="#4A90E2"
        bottom-color="#87CEEB">
      </a-sky-background>

      <!-- Or textured sky -->
      <!-- <a-sky src="sky.jpg" rotation="0 -130 0"></a-sky> -->

      <!-- Ocean -->
      <a-entity
        ocean="density: 20; width: 50; depth: 50; speed: 4"
        material="color: #9CE3F9; opacity: 0.75; metalness: 0; roughness: 1"
        rotation="-90 0 0">
      </a-entity>

      <!-- Particle system for atmosphere -->
      <a-entity
        particle-system="preset: snow; particleCount: 2000; color: #FFF">
      </a-entity>

      <a-entity light="type: ambient; color: #888"></a-entity>
      <a-entity light="type: directional; color: #FFF; intensity: 0.7" position="1 2 1"></a-entity>
    </a-scene>
  </body>
</html>

Pattern 7: GLTF Model Loading

Problem: Load and display 3D models

Solution: Use gltf-model component with asset management

<a-scene>
  <a-assets>
    <a-asset-item id="robot" src="robot.gltf"></a-asset-item>
    <a-asset-item id="building" src="building.glb"></a-asset-item>
  </a-assets>

  <!-- Load model -->
  <a-entity
    gltf-model="#robot"
    position="0 0 -3"
    scale="0.5 0.5 0.5"
    animation="property: rotation; to: 0 360 0; loop: true; dur: 10000">
  </a-entity>

  <!-- Load with extras (animations) -->
  <a-entity
    gltf-model="#building"
    position="5 0 -10"
    animation-mixer="clip: *; loop: repeat">
  </a-entity>

  <a-camera position="0 1.6 5"></a-camera>
  <a-entity light="type: ambient; intensity: 0.5"></a-entity>
  <a-entity light="type: directional; intensity: 0.8" position="2 4 2"></a-entity>
</a-scene>

<script>
// Handle model loading events
document.querySelector('[gltf-model="#robot"]').addEventListener('model-loaded', (evt) => {
  console.log('Model loaded:', evt.detail.model);

  // Access Three.js object
  const model = evt.detail.model;
  model.traverse(node => {
    if (node.isMesh) {
      console.log('Mesh found:', node.name);
    }
  });
});

document.querySelector('[gltf-model="#robot"]').addEventListener('model-error', (evt) => {
  console.error('Model loading error:', evt.detail);
});
</script>

Integration Patterns

With Three.js

Access underlying Three.js objects:

// Get Three.js scene
const scene = document.querySelector('a-scene').object3D;

// Get entity's Three.js object
const box = document.querySelector('a-box');
const threeObject = box.object3D;

// Direct Three.js manipulation
threeObject.position.set(1, 2, 3);
threeObject.rotation.y = Math.PI / 4;

// Add custom Three.js objects
const geometry = new THREE.BoxGeometry(1, 1, 1);
const material = new THREE.MeshStandardMaterial({ color: 0xff0000 });
const mesh = new THREE.Mesh(geometry, material);
scene.add(mesh);

With GSAP (Animation)

Animate A-Frame entities with GSAP:

<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/3.12.2/gsap.min.js"></script>
<script>
const box = document.querySelector('a-box');

// Animate position
gsap.to(box.object3D.position, {
  x: 3,
  y: 2,
  z: -5,
  duration: 2,
  ease: 'power2.inOut'
});

// Animate rotation
gsap.to(box.object3D.rotation, {
  y: Math.PI * 2,
  duration: 3,
  repeat: -1,
  ease: 'none'
});

// Animate attributes
gsap.to(box.components.material.material, {
  opacity: 0.5,
  duration: 1
});
</script>

With React

Integrate A-Frame in React components:

import React, { useEffect, useRef } from 'react';
import 'aframe';

function VRScene() {
  const sceneRef = useRef(null);

  useEffect(() => {
    const scene = sceneRef.current;

    // Create entities dynamically
    const entity = document.createElement('a-sphere');
    entity.setAttribute('position', '0 1.5 -3');
    entity.setAttribute('color', '#EF2D5E');
    scene.appendChild(entity);

    // Listen to events
    scene.addEventListener('enter-vr', () => {
      console.log('Entered VR mode');
    });
  }, []);

  return (
    <a-scene ref={sceneRef}>
      <a-box position="-1 0.5 -3" rotation="0 45 0" color="#4CC3D9" />
      <a-sphere position="0 1.25 -5" radius="1.25" color="#EF2D5E" />
      <a-cylinder position="1 0.75 -3" radius="0.5" height="1.5" color="#FFC65D" />
      <a-plane position="0 0 -4" rotation="-90 0 0" width="4" height="4" color="#7BC8A4" />
      <a-sky color="#ECECEC" />
    </a-scene>
  );
}

export default VRScene;

Performance Best Practices

1. Use Asset Management

Preload assets to avoid blocking:

<a-assets>
  <img id="texture1" src="large-texture.jpg">
  <video id="video360" src="360video.mp4" preload="auto"></video>
  <a-asset-item id="model" src="complex-model.gltf"></a-asset-item>
</a-assets>

2. Pool Entities

Reuse entities instead of creating/destroying:

AFRAME.registerComponent('bullet-pool', {
  init: function() {
    this.pool = [];
    this.used = [];

    // Pre-create bullets
    for (let i = 0; i < 20; i++) {
      const bullet = document.createElement('a-sphere');
      bullet.setAttribute('radius', 0.1);
      bullet.setAttribute('visible', false);
      this.el.sceneEl.appendChild(bullet);
      this.pool.push(bullet);
    }
  },

  getBullet: function() {
    if (this.pool.length > 0) {
      const bullet = this.pool.pop();
      bullet.setAttribute('visible', true);
      this.used.push(bullet);
      return bullet;
    }
  },

  returnBullet: function(bullet) {
    bullet.setAttribute('visible', false);
    const index = this.used.indexOf(bullet);
    if (index > -1) {
      this.used.splice(index, 1);
      this.pool.push(bullet);
    }
  }
});

3. Optimize Geometry

Use low-poly models and LOD:

<!-- Low-poly for distant objects -->
<a-sphere radius="1" segments-width="8" segments-height="6"></a-sphere>

<!-- High-poly for close objects -->
<a-sphere radius="1" segments-width="32" segments-height="32"></a-sphere>

4. Limit Draw Calls

Use instancing for repeated objects:

AFRAME.registerComponent('instanced-trees', {
  init: function() {
    // Use Three.js InstancedMesh for repeated geometry
    const scene = this.el.sceneEl.object3D;
    const geometry = new THREE.ConeGeometry(0.5, 2, 8);
    const material = new THREE.MeshStandardMaterial({ color: 0x228B22 });
    const mesh = new THREE.InstancedMesh(geometry, material, 100);

    // Position instances
    for (let i = 0; i < 100; i++) {
      const matrix = new THREE.Matrix4();
      matrix.setPosition(
        Math.random() * 20 - 10,
        0,
        Math.random() * 20 - 10
      );
      mesh.setMatrixAt(i, matrix);
    }

    scene.add(mesh);
  }
});

5. Throttle tick() Functions

Don't update every frame if unnecessary:

AFRAME.registerComponent('throttled-update', {
  init: function() {
    this.lastUpdate = 0;
    this.updateInterval = 100; // ms
  },

  tick: function(time, timeDelta) {
    if (time - this.lastUpdate >= this.updateInterval) {
      // Expensive operation here
      this.lastUpdate = time;
    }
  }
});

6. Use Stats Component for Monitoring

<a-scene stats>
  <!-- Shows FPS and performance metrics -->
</a-scene>

Common Pitfalls and Solutions

Pitfall 1: Entities Not Appearing

Problem: Entity added but not visible

Causes:

Entity positioned behind camera
Scale is 0 or very small
Material opacity is 0
Entity outside camera frustum

Solution:

// Wait for scene to load
const scene = document.querySelector('a-scene');
scene.addEventListener('loaded', () => {
  const entity = document.createElement('a-box');
  entity.setAttribute('position', '0 1.5 -3'); // In front of camera
  entity.setAttribute('color', 'red');
  scene.appendChild(entity);
});

// Debug: Check entity position
console.log(entity.getAttribute('position'));

// Debug: Check if entity is in scene
console.log(entity.parentNode); // Should be <a-scene>

Pitfall 2: Events Not Firing

Problem: Click/mouseenter events don't trigger

Cause: Missing raycaster or cursor

Solution:

<!-- Add cursor to camera -->
<a-camera>
  <a-cursor raycaster="objects: .interactive"></a-cursor>
</a-camera>

<!-- Add class to interactive objects -->
<a-box class="interactive" position="0 1 -3"></a-box>

<!-- Or use raycaster directly -->
<a-entity raycaster="objects: [geometry]" cursor></a-entity>

Pitfall 3: Performance Degradation

Problem: Low FPS with many entities

Causes:

Too many draw calls
Complex geometries
Unoptimized textures
Too many tick() updates

Solutions:

// 1. Use object pooling (see Performance section)
// 2. Simplify geometry
// 3. Optimize textures (reduce size, use compression)
// 4. Throttle updates

AFRAME.registerComponent('optimize-far-entities', {
  tick: function() {
    const camera = this.el.sceneEl.camera;
    const entities = document.querySelectorAll('[geometry]');

    entities.forEach(el => {
      const distance = el.object3D.position.distanceTo(camera.position);

      // Hide distant entities
      el.object3D.visible = distance < 50;
    });
  }
});

Pitfall 4: Z-Fighting (Overlapping Surfaces)

Problem: Flickering when surfaces overlap

Cause: Two surfaces at same position

Solution:

<!-- Offset surfaces slightly -->
<a-plane position="0 0.01 0" rotation="-90 0 0"></a-plane>
<a-plane position="0 0.02 0" rotation="-90 0 0"></a-plane>

<!-- Or use renderOrder -->
<a-entity
  geometry="primitive: plane"
  material="src: #texture1; transparent: true"
  class="has-render-order">
</a-entity>

<script>
document.querySelector('.has-render-order').object3D.renderOrder = 1;
</script>

Pitfall 5: Mobile VR Performance

Problem: Low performance on mobile VR

Solutions:

<!-- Reduce renderer max canvas size -->
<a-scene renderer="maxCanvasWidth: 1920; maxCanvasHeight: 1920">

<!-- Use low-poly models -->
<a-sphere radius="1" segments-width="8" segments-height="6"></a-sphere>

<!-- Limit lights (expensive on mobile) -->
<a-entity light="type: ambient; intensity: 0.6"></a-entity>
<a-entity light="type: directional; intensity: 0.4" position="1 2 1"></a-entity>

<!-- Disable antialiasing if needed -->
<a-scene renderer="antialias: false">
</a-scene>

Pitfall 6: Asset Loading Issues

Problem: Assets not loading or CORS errors

Solutions:

<!-- Use crossorigin attribute -->
<a-assets>
  <img id="texture" src="https://example.com/texture.jpg" crossorigin="anonymous">
</a-assets>

<!-- Wait for assets to load -->
<script>
const assets = document.querySelector('a-assets');
assets.addEventListener('loaded', () => {
  console.log('All assets loaded');
  // Safe to use assets now
});

assets.addEventListener('timeout', () => {
  console.error('Asset loading timeout');
});
</script>

<!-- Handle loading errors -->
<script>
const img = document.querySelector('img#texture');
img.addEventListener('error', () => {
  console.error('Failed to load texture');
  // Use fallback
  img.src = 'fallback-texture.jpg';
});
</script>

Resources

A-Frame Documentation
A-Frame GitHub
A-Frame School
A-Frame Community Components
WebXR Device API
Three.js Documentation (A-Frame built on Three.js)

Related Skills

threejs-webgl: For advanced Three.js control beyond A-Frame's declarative API
babylonjs-engine: Alternative 3D engine with different architecture
gsap-scrolltrigger: For animating A-Frame entities with GSAP
react-three-fiber: React approach to Three.js (compare with A-Frame's HTML approach)

Related skills

More from freshtechbro/claudedesignskills and the wider catalog.

animated-component-libraries

freshtechbro/claudedesignskills

Pre-built animated React component collections combining Magic UI (150+ TypeScript/Tailwind/Motion components) and React Bits (90+ minimal-dependency animated components). Use this skill when building landing pages, marketing sites, dashboards, or interactive UIs requiring pre-made animated components instead of hand-crafting animations. Triggers on tasks involving animated UI components, Magic UI, React Bits, shadcn/ui integration, Tailwind CSS components, or component library selection. Alternative to manually implementing animations with Framer Motion or GSAP.

1.3k installs

animejs

freshtechbro/claudedesignskills

Versatile JavaScript animation engine for DOM, CSS, SVG, and JavaScript objects. Use when creating timeline-based animations, stagger effects, SVG morphing, keyframe sequences, or complex choreographed animations. Triggers on tasks involving Anime.js, timeline animations, staggered sequences, SVG path animations, morphing, or multi-step animation choreography. Alternative to GSAP for SVG-heavy animations and React-independent projects.

1.1k installsAudited

babylonjs-engine

freshtechbro/claudedesignskills

Comprehensive skill for Babylon.js 3D web rendering engine. Use this skill when building real-time 3D experiences, browser-based games, interactive visualizations, or immersive web applications. Triggers on tasks involving Babylon.js, 3D scenes, WebGL/WebGPU rendering, entity-component systems, physics simulations, PBR materials, shadow mapping, or 3D model loading. Alternative to Three.js with built-in editor integration and game engine features.

1.1k installs

barba-js

freshtechbro/claudedesignskills

Page transitions library for creating fluid, smooth transitions between website pages. Use this skill when implementing page transitions, creating SPA-like experiences, adding animated route changes, or building websites with smooth navigation. Triggers on tasks involving Barba.js, page transitions, routing, view management, transition hooks, GSAP integration, or smooth page navigation. Works with gsap-scrolltrigger for transition animations.

1.0k installs

blender-web-pipeline

freshtechbro/claudedesignskills

Export Blender 3D models to web-optimized glTF with Python automation and asset optimization.

1.3k installsAudited

gsap-scrolltrigger

freshtechbro/claudedesignskills

Comprehensive skill for GSAP (GreenSock Animation Platform) and ScrollTrigger plugin. Use this skill when creating web animations, scroll-driven experiences, timelines, tweens, scroll-triggered animations, pinning, scrubbing, parallax effects, or animating DOM elements, SVG, Canvas, WebGL, or Three.js. Triggers on tasks involving GSAP, ScrollTrigger, smooth animations, scroll effects, or animation sequencing.

1.2k installsAudited