webxr-hello/hello-3.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 isInVR = false;

        // Check if WebXR is supported
        if ('xr' in navigator) {
            navigator.xr.isSessionSupported('immersive-vr').then((supported) => {
                if (supported) {
                    vrButton.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: Creepy figure behind the user
            const figureGroup = new THREE.Group();

            // Body
            const bodyGeometry = new THREE.CylinderGeometry(0.3, 0.4, 1.8, 8);
            const bodyMaterial = new THREE.MeshPhongMaterial({
                color: 0x2a2a2a,
                emissive: 0x111111,
                shininess: 10
            });
            const body = new THREE.Mesh(bodyGeometry, bodyMaterial);
            body.position.y = 0.9;
            figureGroup.add(body);

            // Head
            const headGeometry = new THREE.SphereGeometry(0.25, 8, 6);
            const headMaterial = new THREE.MeshPhongMaterial({
                color: 0x3a3a3a,
                emissive: 0x0a0a0a
            });
            const head = new THREE.Mesh(headGeometry, headMaterial);
            head.position.y = 2;
            figureGroup.add(head);

            // Glowing eyes
            const eyeGeometry = new THREE.SphereGeometry(0.05, 4, 4);
            const eyeMaterial = new THREE.MeshBasicMaterial({
                color: 0xff0000,
                emissive: 0xff0000
            });
            const leftEye = new THREE.Mesh(eyeGeometry, eyeMaterial);
            leftEye.position.set(-0.08, 2, -0.2);
            const rightEye = new THREE.Mesh(eyeGeometry, eyeMaterial);
            rightEye.position.set(0.08, 2, -0.2);
            figureGroup.add(leftEye);
            figureGroup.add(rightEye);

            // Arms
            const armGeometry = new THREE.CylinderGeometry(0.1, 0.1, 1, 6);
            const leftArm = new THREE.Mesh(armGeometry, bodyMaterial);
            leftArm.position.set(-0.4, 1.2, 0);
            leftArm.rotation.z = 0.3;
            const rightArm = new THREE.Mesh(armGeometry, bodyMaterial);
            rightArm.position.set(0.4, 1.2, 0);
            rightArm.rotation.z = -0.3;
            figureGroup.add(leftArm);
            figureGroup.add(rightArm);

            figureGroup.position.set(0, 0, 4);
            scene.add(figureGroup);

            // Audio context for mumbling
            let audioContext = null;
            let oscillator = null;
            let gainNode = null;
            let isPlaying = false;

            function startMumbling() {
                if (isPlaying) return;

                audioContext = new (window.AudioContext || window.webkitAudioContext)();
                oscillator = audioContext.createOscillator();
                gainNode = audioContext.createGain();

                oscillator.type = 'sawtooth';
                oscillator.frequency.value = 80;
                gainNode.gain.value = 0.1;

                oscillator.connect(gainNode);
                gainNode.connect(audioContext.destination);
                oscillator.start();
                isPlaying = true;

                // Modulate the mumbling
                setInterval(() => {
                    if (oscillator && isPlaying) {
                        oscillator.frequency.value = 60 + Math.random() * 40;
                        gainNode.gain.value = 0.05 + Math.random() * 0.1;
                    }
                }, 100);
            }

            // Check if user is looking at the figure
            let hasTriggered = false;
            function checkUserFacing() {
                if (!camera || hasTriggered) return;

                const cameraDirection = new THREE.Vector3();
                camera.getWorldDirection(cameraDirection);

                // Check if camera is facing towards positive Z (behind initial view)
                if (cameraDirection.z > 0.5) {
                    hasTriggered = true;
                    startMumbling();
                }
            }

            // 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: Floating crystals scattered around
            const crystals = [];
            for (let i = 0; i < 5; i++) {
                const crystalGeometry = new THREE.OctahedronGeometry(0.3, 0);
                const crystalMaterial = new THREE.MeshPhongMaterial({
                    color: new THREE.Color().setHSL(Math.random(), 0.5, 0.5),
                    emissive: 0x0044aa,
                    shininess: 100
                });
                const crystal = new THREE.Mesh(crystalGeometry, crystalMaterial);
                crystal.position.set(
                    (Math.random() - 0.5) * 6,
                    1 + Math.random() * 2,
                    (Math.random() - 0.5) * 6
                );
                crystals.push(crystal);
                scene.add(crystal);
            }

            // 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() {
                // Check if user turned around
                checkUserFacing();

                // Twitch the figure
                if (hasTriggered) {
                    figureGroup.rotation.y = Math.sin(Date.now() * 0.01) * 0.1;
                    head.rotation.x = Math.sin(Date.now() * 0.02) * 0.2;
                    head.rotation.z = Math.cos(Date.now() * 0.015) * 0.15;
                    leftArm.rotation.x = Math.sin(Date.now() * 0.03) * 0.3;
                    rightArm.rotation.x = Math.cos(Date.now() * 0.025) * 0.3;

                    // Eye glow pulsing
                    const eyeIntensity = 0.5 + Math.sin(Date.now() * 0.01) * 0.5;
                    leftEye.material.emissiveIntensity = eyeIntensity;
                    rightEye.material.emissiveIntensity = eyeIntensity;
                }

                // Rotate crystals
                crystals.forEach((crystal, i) => {
                    crystal.rotation.x += 0.01 * (i + 1);
                    crystal.rotation.y += 0.02 * (i + 1);
                    crystal.position.y += Math.sin(Date.now() * 0.001 + i) * 0.002;
                });

                // 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;
                    hasTriggered = false;
                    if (isPlaying && oscillator) {
                        oscillator.stop();
                        isPlaying = 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>