webxr-hello/hello-2.html at main · ben-mig/webxr-hello · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>WebXR Hello World</title>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r128/three.min.js"></script>
    <style>
        body {
            margin: 0;
            font-family: Arial, sans-serif;
            overflow: hidden;
            background: #000;
        }

        #desktop-view {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            text-align: center;
            transition: opacity 0.5s;
        }

        #desktop-view h1 {
            font-size: 4rem;
            margin: 0;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }

        #desktop-view p {
            font-size: 1.2rem;
            margin-top: 1rem;
            opacity: 0.8;
        }

        #vr-canvas {
            display: none;
            position: absolute;
            top: 0;
            left: 0;
        }

        #vr-button {
            position: absolute;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            padding: 12px 24px;
            background: rgba(0,0,0,0.8);
            color: white;
            border: 2px solid white;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
            display: none;
            z-index: 1000;
        }

        #vr-button:hover {
            background: rgba(255,255,255,0.2);
        }
    </style>
</head>
<body>
    <div id="desktop-view">
        <div>
            <h1>Hello World</h1>
            <p>A simple WebXR experience</p>
            <p id="vr-hint" style="display: none; font-size: 0.9rem; margin-top: 2rem;">
                🥽 VR headset detected! Click "Enter VR" to explore...
            </p>
        </div>
    </div>

    <canvas id="vr-canvas"></canvas>
    <button id="vr-button">Enter VR</button>

    <script>
        let scene, camera, renderer;
        let vrButton = document.getElementById('vr-button');
        let desktopView = document.getElementById('desktop-view');
        let vrCanvas = document.getElementById('vr-canvas');
        let vrHint = document.getElementById('vr-hint');
        let isInVR = false;

        // Check if WebXR is supported
        if ('xr' in navigator) {
            navigator.xr.isSessionSupported('immersive-vr').then((supported) => {
                if (supported) {
                    vrButton.style.display = 'block';
                    vrHint.style.display = 'block';
                    initVRScene();
                }
            });
        }

        function initVRScene() {
            // Initialize Three.js scene
            scene = new THREE.Scene();
            scene.background = new THREE.Color(0x000000);

            // Camera
            camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
            camera.position.set(0, 1.6, 3);

            // Renderer
            renderer = new THREE.WebGLRenderer({
                canvas: vrCanvas,
                antialias: true,
                alpha: true
            });
            renderer.setPixelRatio(window.devicePixelRatio);
            renderer.setSize(window.innerWidth, window.innerHeight);
            renderer.xr.enabled = true;

            // Lighting
            const ambientLight = new THREE.AmbientLight(0xffffff, 0.6);
            scene.add(ambientLight);

            const directionalLight = new THREE.DirectionalLight(0xffffff, 0.8);
            directionalLight.position.set(5, 10, 5);
            scene.add(directionalLight);

            // Create the 2D "Hello World" panel that appears in front
            const panelGeometry = new THREE.PlaneGeometry(4, 2);
            const panelMaterial = new THREE.MeshBasicMaterial({
                color: 0x667eea,
                side: THREE.DoubleSide
            });
            const panel = new THREE.Mesh(panelGeometry, panelMaterial);
            panel.position.z = -2;
            panel.position.y = 1.6;
            scene.add(panel);

            // Add text to panel (using canvas texture)
            const canvas = document.createElement('canvas');
            canvas.width = 512;
            canvas.height = 256;
            const ctx = canvas.getContext('2d');
            ctx.fillStyle = '#667eea';
            ctx.fillRect(0, 0, 512, 256);
            ctx.fillStyle = 'white';
            ctx.font = 'bold 60px Arial';
            ctx.textAlign = 'center';
            ctx.fillText('Hello World', 256, 120);
            ctx.font = '30px Arial';
            ctx.fillText('Look behind you! 👀', 256, 180);

            const textTexture = new THREE.CanvasTexture(canvas);
            panel.material = new THREE.MeshBasicMaterial({ map: textTexture });

            // Easter Egg 1: Floating crystal behind the user
            const crystalGeometry = new THREE.OctahedronGeometry(0.5, 0);
            const crystalMaterial = new THREE.MeshPhongMaterial({
                color: 0x00ffff,
                emissive: 0x0044aa,
                shininess: 100
            });
            const crystal = new THREE.Mesh(crystalGeometry, crystalMaterial);
            crystal.position.set(0, 2, 5);
            scene.add(crystal);

            // Easter Egg 2: Hidden message on the "floor"
            const floorCanvas = document.createElement('canvas');
            floorCanvas.width = 512;
            floorCanvas.height = 512;
            const floorCtx = floorCanvas.getContext('2d');
            floorCtx.fillStyle = '#1a1a1a';
            floorCtx.fillRect(0, 0, 512, 512);
            floorCtx.fillStyle = '#444';
            floorCtx.font = 'bold 40px Arial';
            floorCtx.textAlign = 'center';
            floorCtx.save();
            floorCtx.translate(256, 256);
            floorCtx.rotate(-Math.PI / 2);
            floorCtx.fillText('🎮 Achievement Unlocked!', 0, 0);
            floorCtx.fillText('VR Explorer', 0, 50);
            floorCtx.restore();

            const floorTexture = new THREE.CanvasTexture(floorCanvas);
            const floorGeometry = new THREE.PlaneGeometry(10, 10);
            const floorMaterial = new THREE.MeshBasicMaterial({
                map: floorTexture,
                side: THREE.DoubleSide
            });
            const floor = new THREE.Mesh(floorGeometry, floorMaterial);
            floor.rotation.x = -Math.PI / 2;
            floor.position.y = -0.5;
            scene.add(floor);

            // Easter Egg 3: Orbiting spheres around the crystal
            const orbitGroup = new THREE.Group();
            for (let i = 0; i < 6; i++) {
                const orbGeometry = new THREE.SphereGeometry(0.1, 16, 16);
                const orbMaterial = new THREE.MeshPhongMaterial({
                    color: new THREE.Color().setHSL(i / 6, 1, 0.5),
                    emissive: new THREE.Color().setHSL(i / 6, 1, 0.3)
                });
                const orb = new THREE.Mesh(orbGeometry, orbMaterial);
                const angle = (i / 6) * Math.PI * 2;
                orb.position.x = Math.cos(angle) * 1;
                orb.position.z = Math.sin(angle) * 1;
                orbitGroup.add(orb);
            }
            orbitGroup.position.copy(crystal.position);
            scene.add(orbitGroup);

            // Easter Egg 4: Hidden portal on the ceiling
            const portalGeometry = new THREE.RingGeometry(0.5, 1, 32);
            const portalMaterial = new THREE.MeshBasicMaterial({
                color: 0xff00ff,
                side: THREE.DoubleSide,
                transparent: true,
                opacity: 0.8
            });
            const portal = new THREE.Mesh(portalGeometry, portalMaterial);
            portal.position.y = 4;
            portal.rotation.x = -Math.PI / 2;
            scene.add(portal);

            // Easter Egg 5: Particle system around the portal
            const particlesGeometry = new THREE.BufferGeometry();
            const particleCount = 100;
            const positions = new Float32Array(particleCount * 3);

            for (let i = 0; i < particleCount * 3; i += 3) {
                const angle = Math.random() * Math.PI * 2;
                const radius = 0.5 + Math.random() * 1;
                positions[i] = Math.cos(angle) * radius;
                positions[i + 1] = 4 + (Math.random() - 0.5) * 0.5;
                positions[i + 2] = Math.sin(angle) * radius;
            }

            particlesGeometry.setAttribute('position', new THREE.BufferAttribute(positions, 3));
            const particlesMaterial = new THREE.PointsMaterial({
                color: 0xff00ff,
                size: 0.05,
                transparent: true,
                opacity: 0.6
            });
            const particles = new THREE.Points(particlesGeometry, particlesMaterial);
            scene.add(particles);

            // Animation loop
            function animate() {
                // Rotate crystal
                crystal.rotation.x += 0.01;
                crystal.rotation.y += 0.02;

                // Orbit spheres
                orbitGroup.rotation.y += 0.01;

                // Pulse portal
                portal.scale.x = 1 + Math.sin(Date.now() * 0.001) * 0.1;
                portal.scale.y = 1 + Math.sin(Date.now() * 0.001) * 0.1;

                // Animate particles
                particles.rotation.y += 0.005;

                renderer.render(scene, camera);
            }

            renderer.setAnimationLoop(animate);
        }

        // VR button click handler
        vrButton.addEventListener('click', async () => {
            if (!isInVR) {
                const session = await navigator.xr.requestSession('immersive-vr', {
                    optionalFeatures: ['local-floor', 'bounded-floor']
                });

                renderer.xr.setSession(session);

                // Hide desktop view and show VR canvas
                desktopView.style.display = 'none';
                vrCanvas.style.display = 'block';
                vrButton.textContent = 'Exit VR';
                isInVR = true;

                session.addEventListener('end', () => {
                    desktopView.style.display = 'flex';
                    vrCanvas.style.display = 'none';
                    vrButton.textContent = 'Enter VR';
                    isInVR = false;
                });
            } else {
                renderer.xr.getSession().end();
            }
        });

        // Handle window resize
        window.addEventListener('resize', () => {
            if (camera && renderer) {
                camera.aspect = window.innerWidth / window.innerHeight;
                camera.updateProjectionMatrix();
                renderer.setSize(window.innerWidth, window.innerHeight);
            }
        });
    </script>
</body>
</html>