mSnake

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zxciop commited on Jun 9, 2025

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f8a4443

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Create index.html

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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">
+    <!-- For loading alternate resource paths
+      <script type="module" src="{{ url_for('static', filename='game.js') }}"></script>
+    <link rel="stylesheet" href="{{ url_for('static', filename='style.css') }}">
+    -->
+    <title>Matrix Snake 3D - Enhanced</title>
+    <style>
+        body {
+            margin: 0;
+            overflow: hidden;
+            background-color: #000;
+            color: #0f0;
+            text-shadow: 1px 1px 3px #0f0;
+            font-family: 'Courier New', Courier, monospace;
+        }
+        canvas {
+            display: block;
+        }
+        .game-ui {
+            position: absolute;
+            padding: 10px;
+            background-color: rgba(0, 20, 0, 0.9);
+            border: 1px solid #0f0;
+            border-radius: 5px;
+            font-size: 1.2em;
+            pointer-events: none;
+        }
+        #info {
+            top: 10px;
+            left: 10px;
+        }
+        #combo {
+            top: 10px;
+            right: 10px;
+            color: #0ff;
+            opacity: 0;
+            transition: opacity 0.3s;
+        }
+        #gameScreen {
+            position: absolute;
+            top: 0;
+            left: 0;
+            width: 100%;
+            height: 100%;
+            display: flex;
+            flex-direction: column;
+            justify-content: center;
+            align-items: center;
+            background-color: rgba(0, 10, 0, 0.0);
+            z-index: 10;
+        }
+        #startScreen, #gameOverScreen {
+            padding: 30px;
+            background-color: rgba(0, 30, 0, 0.7);
+            border: 2px solid #00ff00;
+            color: #2eff00;
+            text-shadow: lime 3px 3px 3px;
+            border-radius: 10px;
+            text-align: center;
+            max-width: 500px;
+            text-emphasis-color: #91ff83;
+        }
+        #gameOverScreen {
+            border-color: #f00;
+        }
+        .title {
+            font-size: 2.5em;
+            margin-bottom: 20px;
+            text-shadow: 2px 2px 5px #11ff00, 1px 1px 3px #eeff00, -3px -3px 3px #11ff00, 0px 2px 5px #2eff00;
+        }
+        .subtitle {
+            font-size: 1.2em;
+            margin-bottom: 30px;
+        }
+        .button {
+            display: inline-block;
+            padding: 10px 20px;
+            margin: 10px;
+            background-color: rgba(0, 40, 0, 0.5);
+            border: 1px solid #aaff00;
+            border-radius: 5px;
+            color: #0f0;
+            cursor: pointer;
+            transition: all 0.2s;
+            pointer-events: auto;
+        }
+        .button:hover {
+            background-color: rgba(0, 120, 0, 0.9);
+            transform: translateY(-5px);
+            box-shadow: 0px 2px 10px #2eff00;
+        }
+        .controls {
+            margin-top: 20px;
+            font-size: 0.9em;
+            opacity: 0.8;
+        }
+        #highScores {
+            margin-top: 20px;
+            text-align: left;
+            width: 100%;
+        }
+        #highScores table {
+            width: 100%;
+            border-collapse: collapse;
+        }
+        #highScores th, #highScores td {
+            padding: 5px;
+            border-bottom: 1px solid rgba(0, 255, 0, 0.5);
+        }
+        #touchControls {
+            position: absolute;
+            bottom: 20px;
+            left: 50%;
+            transform: translateX(-50%);
+            display: none; /* Hidden by default, shown on mobile */
+        }
+        .touchBtn {
+            width: 60px;
+            height: 60px;
+            background-color: rgba(0, 120, 0, 0.7);
+            border: 1px solid #0f0;
+            border-radius: 50%;
+            margin: 5px;
+            display: inline-flex;
+            justify-content: center;
+            align-items: center;
+            font-size: 20px;
+            cursor: pointer;
+            pointer-events: auto;
+        }
+        /* Matrix animation background */
+        #matrixCanvas {
+            position: fixed;
+            top: 0;
+            left: 0;
+            z-index: -1;
+        }
+    </style>
+</head>
+<body>
+<!-- Matrix background -->
+<canvas id="matrixCanvas"></canvas>
+<!-- Game canvas -->
+<canvas id="gameCanvas"></canvas>
+<!-- Game UI -->
+<div id="info" class="game-ui">Score: 0 | High: 0</div>
+<div id="combo" class="game-ui">Combo x1!</div>
+<!-- Touch controls for mobile -->
+<div id="touchControls">
+    <div class="touchBtn" id="upBtn">↑</div>
+    <div style="display: flex;">
+        <div class="touchBtn" id="leftBtn">←</div>
+        <div class="touchBtn" id="downBtn">↓</div>
+        <div class="touchBtn" id="rightBtn">→</div>
+    </div>
+</div>
+<!-- Game screens -->
+<div id="gameScreen">
+    <div id="startScreen">
+        <div class="title">MATRIX SNAKE 3D</div>
+        <div class="subtitle">Navigate the digital realm. Collect data packets. Avoid system firewalls.</div>
+        <div class="button" id="startBtn">START GAME</div>
+        <div class="button" id="difficultyBtn">DIFFICULTY: NORMAL</div>
+        <div class="controls">
+            Use Arrow Keys to change direction<br>
+            Press P to pause the game
+        </div>
+        <div id="highScores">
+            <h3>HIGH SCORES</h3>
+            <table id="scoresTable">
+                <tr><th>RANK</th><th>SCORE</th><th>DIFFICULTY</th></tr>
+            </table>
+        </div>
+    </div>
+    <div id="gameOverScreen" style="display: none;">
+        <div class="title" style="color: #f00;">SYSTEM FAILURE</div>
+        <div id="finalScore" class="subtitle">Final Score: 0</div>
+        <div class="button" id="restartBtn">RESTART</div>
+        <div class="button" id="menuBtn">MAIN MENU</div>
+    </div>
+    <div id="pauseScreen" style="display: none;">
+        <div class="title">PAUSED</div>
+        <div class="subtitle">Press P to resume</div>
+        <div class="button" id="resumeBtn">RESUME</div>
+        <div class="button" id="quitBtn">QUIT</div>
+    </div>
+</div>
+<!-- Audio elements -->
+<audio id="eatSound" preload="auto">
+    <source src="data:audio/mpeg;base64,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" type="audio/mpeg">
+</audio>
+<audio id="gameOverSound" preload="auto">
+    <source src="data:audio/mpeg;base64,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" type="audio/mpeg">
+</audio>
+<audio id="bgMusic" loop preload="auto">
+    <source src="data:audio/mpeg;base64,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" type="audio/mpeg">
+</audio>
+<script type="importmap">
+    {
+        "imports": {
+            "three": "https://unpkg.com/three@0.160.0/build/three.module.js",
+            "three/addons/": "https://unpkg.com/three@0.160.0/examples/jsm/"
+        }
+    }
+</script>
+<script type="module">
+    import * as THREE from 'https://unpkg.com/three@0.160.0/build/three.module.js';
+    import { EffectComposer } from 'https://unpkg.com/three@0.160.0/examples/jsm/postprocessing/EffectComposer.js';
+    import { RenderPass } from 'https://unpkg.com/three@0.160.0/examples/jsm/postprocessing/RenderPass.js';
+    import { UnrealBloomPass } from 'https://unpkg.com/three@0.160.0/examples/jsm/postprocessing/UnrealBloomPass.js';
+    // Game configuration
+    const CONFIG = {
+        GRID_SIZE: 25,           // Number of units across/deep
+        CELL_SIZE: 1,            // Size of each grid cell/snake segment
+        BASE_SPEED: 150,         // Base milliseconds between updates
+        DIFFICULTY_LEVELS: {
+            'EASY': { speedMultiplier: 1.3, obstacleMultiplier: 0.5 },
+            'NORMAL': { speedMultiplier: 1.0, obstacleMultiplier: 1.0 },
+            'HARD': { speedMultiplier: 0.7, obstacleMultiplier: 1.5 }
+        },
+        MAX_OBSTACLE_COUNT: 10,  // Maximum number of obstacles
+        FOOD_TYPES: [
+            { type: 'regular', color: 0x00ff00, points: 1, speedEffect: 0 },
+            { type: 'special', color: 0x00ffff, points: 5, speedEffect: -10 },
+            { type: 'rare', color: 0xff00ff, points: 10, speedEffect: 10 }
+        ],
+        COMBO_TIMEOUT: 5000,     // Milliseconds to get next food for combo
+        HIGH_SCORES_COUNT: 5     // Number of high scores to save
+    };
+    // --- Particle System for Effects ---
+    class ParticleSystem {
+        constructor(scene) {
+            this.scene = scene;
+            this.particles = [];
+            this.geometry = new THREE.BoxGeometry(0.2, 0.1, 0.2); // Shared geometry
+        }
+        createFoodEffect(position, color) {
+            const count = 20;
+            for (let i = 0; i < count; i++) {
+                const material = new THREE.MeshBasicMaterial({
+                    color: color || 0x00ff00,
+                    transparent: true,
+                    opacity: 0.8
+                });
+                const particle = new THREE.Mesh(this.geometry, material);
+                particle.position.copy(position);
+                const velocity = new THREE.Vector3(
+                    (Math.random() - 0.5) * 0.1,
+                    (Math.random()) * 0.25,
+                    (Math.random() - 0.5) * 0.1
+                );
+                this.scene.add(particle);
+                this.particles.push({
+                    mesh: particle,
+                    velocity: velocity,
+                    life: 1.0,
+                    decay: 0.02 + Math.random() * 0.03
+                });
+            }
+        }
+        update() {
+            for (let i = this.particles.length - 1; i >= 0; i--) {
+                const particle = this.particles[i];
+                particle.mesh.position.add(particle.velocity);
+                particle.velocity.y -= 0.005; // Gravity
+                particle.life -= particle.decay;
+                particle.mesh.material.opacity = particle.life;
+                if (particle.life <= 0) {
+                    this.scene.remove(particle.mesh);
+                    particle.mesh.material.dispose();
+                    // particle.mesh.geometry.dispose(); // Geometry is shared, don't dispose here
+                    this.particles.splice(i, 1);
+                }
+            }
+        }
+        clear() {
+            for (const particle of this.particles) {
+                this.scene.remove(particle.mesh);
+                particle.mesh.material.dispose();
+            }
+            this.particles = [];
+            // Note: Shared geometry (this.geometry) is not disposed here,
+            // as it might be needed again. Dispose it if ParticleSystem itself is destroyed.
+        }
+    }
+    // Game state management
+    const GameState = {
+        MENU: 'menu',
+        PLAYING: 'playing',
+        PAUSED: 'paused',
+        GAME_OVER: 'gameOver',
+        currentState: 'menu',
+        changeState(newState) {
+            this.currentState = newState;
+            switch(newState) {
+                case this.MENU:
+                    document.getElementById('gameScreen').style.display = 'flex';
+                    document.getElementById('startScreen').style.display = 'block';
+                    document.getElementById('gameOverScreen').style.display = 'none';
+                    document.getElementById('pauseScreen').style.display = 'none';
+                    break;
+                case this.PLAYING:
+                    document.getElementById('gameScreen').style.display = 'none';
+                    break;
+                case this.PAUSED:
+                    document.getElementById('gameScreen').style.display = 'flex';
+                    document.getElementById('startScreen').style.display = 'none';
+                    document.getElementById('gameOverScreen').style.display = 'none';
+                    document.getElementById('pauseScreen').style.display = 'block';
+                    break;
+                case this.GAME_OVER:
+                    document.getElementById('gameScreen').style.display = 'flex';
+                    document.getElementById('startScreen').style.display = 'none';
+                    document.getElementById('gameOverScreen').style.display = 'block';
+                    document.getElementById('pauseScreen').style.display = 'none';
+                    document.getElementById('gameOverSound').play();
+                    break;
+            }
+        }
+    };
+    // --- Matrix Rain Background Effect ---
+    class MatrixRain {
+        constructor() {
+            this.canvas = document.getElementById('matrixCanvas');
+            this.ctx = this.canvas.getContext('2d');
+            this.resize();
+            this.fontSize = 14;
+            this.columns = Math.floor(this.canvas.width / this.fontSize);
+            this.drops = [];
+            this.characters = '01アイウエオカキクケコサシスセソタチツテトナニヌネ<>{}[]()+-*/%=#@&?*:･ﾟ✧≡░▒░▒░▒▓║│·⁞▏ ▏⁚⁝.';
+            this.katakana = 'ｱｲｳｴｵｶｷｸｹｺｻｼｽｾｿﾀﾁﾂﾃﾄﾅﾆﾇﾈﾉﾊﾋﾌﾍﾎﾏﾐﾑﾒﾓﾔﾕﾖﾗﾘﾙﾚﾛﾜﾝ';
+            this.characters += this.katakana;
+            this.resetDrops();
+            this.animate = this.animate.bind(this);
+            this.animate(); // Start animation
+            window.addEventListener('resize', this.handleResize.bind(this));
+        }
+        handleResize() {
+            this.resize();
+            this.columns = Math.floor(this.canvas.width / this.fontSize);
+            this.resetDrops();
+        }
+        resize() {
+            this.canvas.width = window.innerWidth;
+            this.canvas.height = window.innerHeight;
+        }
+        resetDrops() {
+            this.drops = [];
+            for(let i = 0; i < this.columns; i++) {
+                this.drops[i] = Math.floor(Math.random() * -100); // Start off-screen
+            }
+        }
+        animate() {
+            // Show rain on all screens as per previous request, including PLAYING
+            if (GameState.currentState === GameState.MENU ||
+                GameState.currentState === GameState.PAUSED ||
+                GameState.currentState === GameState.GAME_OVER ||
+                GameState.currentState === GameState.PLAYING) {
+                this.ctx.fillStyle = 'rgba(0, 0, 0, 0.03)'; // Fading effect
+                this.ctx.fillRect(0, 0, this.canvas.width, this.canvas.height);
+                this.ctx.fillStyle = '#00ff00'; // Matrix character color
+                this.ctx.emissiveColor = '#76ff76';
+                this.ctx.emissiveIntensity = '6';
+                this.ctx.font = this.fontSize + 'px monospace';
+                for(let i = 0; i < this.drops.length; i++) {
+                    const text = this.characters.charAt(Math.floor(Math.random() * this.characters.length));
+                    this.ctx.fillText(text, i * this.fontSize, this.drops[i] * this.fontSize);
+                    if(this.drops[i] * this.fontSize > this.canvas.height && Math.random() > 0.975) {
+                        this.drops[i] = 0; // Reset drop
+                    }
+                    this.drops[i]++;
+                }
+            }
+            requestAnimationFrame(this.animate);
+        }
+    } // <-- Make sure this curly brace properly closes the MatrixRain class
+    // --- Object pooling for performance optimization ---
+    class ObjectPool {
+        constructor(createFunc, initialCount = 10) {
+            this.pool = [];
+            this.createFunc = createFunc;
+            for (let i = 0; i < initialCount; i++) {
+                this.pool.push(this.createFunc());
+            }
+        }
+        get() {
+            if (this.pool.length > 0) {
+                return this.pool.pop();
+            }
+            return this.createFunc();
+        }
+        release(object) {
+            this.pool.push(object);
+        }
+        clear() {
+            this.pool = [];
+            // Note: This doesn't dispose Three.js objects.
+            // Disposal should be handled by the code that uses the pool
+            // when objects are truly no longer needed by the scene.
+        }
+    }
+    // --- Main Game Class ---
+    class SnakeGame {
+        constructor() {
+            this.scene = null;
+            this.camera = null;
+            this.renderer = null;
+            this.composer = null; // For post-processing
+            this.snake = [];
+            this.food = null;
+            this.obstacles = [];
+            this.direction = new THREE.Vector3(CONFIG.CELL_SIZE, 0, 0);
+            this.nextDirection = new THREE.Vector3(CONFIG.CELL_SIZE, 0, 0);
+            this.score = 0;
+            this.highScore = this.loadHighScores()[0]?.score || 0;
+            this.gameSpeed = CONFIG.BASE_SPEED;
+            this.lastUpdateTime = 0;
+            this.isGameOver = false;
+            this.isPaused = false;
+            this.gameLoopId = null;
+            this.bounds = Math.floor(CONFIG.GRID_SIZE / 2) * CONFIG.CELL_SIZE;
+            this.obstacleCount = CONFIG.MAX_OBSTACLE_COUNT;
+            this.comboCount = 0;
+            this.lastFoodTime = 0;
+            this.currentDifficulty = 'NORMAL';
+            this.particleSystem = null;
+            this.headLight = null;
+            this.materials = {
+                snakeHead: new THREE.MeshStandardMaterial({
+                    color: 0x39FF14, emissive: 0x39FF14, roughness: 0.1, metalness: 0.25
+                }),
+                snakeBody: new THREE.MeshStandardMaterial({
+                    color: 0x00ff00, emissive: 0x005500, roughness: 0.1, metalness: 1.5
+                }),
+                obstacle: new THREE.MeshStandardMaterial({ // Changed to Standard for lighting
+                    color: 0xff0000, emissive: 0x550000, roughness: 0.3, metalness: 1, wireframe: false
+                }),
+                // Food materials defined per type in chooseFoodType
+            };
+            this.geometries = {
+                segment: new THREE.BoxGeometry(CONFIG.CELL_SIZE, CONFIG.CELL_SIZE, CONFIG.CELL_SIZE),
+                foodBox: new THREE.BoxGeometry(CONFIG.CELL_SIZE * 0.8, CONFIG.CELL_SIZE * 0.8, CONFIG.CELL_SIZE * 0.8),
+                foodSphere: new THREE.SphereGeometry(CONFIG.CELL_SIZE * 0.5, 16, 12),
+                foodTetrahedron: new THREE.TetrahedronGeometry(CONFIG.CELL_SIZE * 0.6, 0),
+                obstacle: new THREE.BoxGeometry(CONFIG.CELL_SIZE * 0.9, CONFIG.CELL_SIZE * 1.5, CONFIG.CELL_SIZE * 0.9) // Taller obstacles
+            };
+            this.segmentPool = new ObjectPool(() => {
+                const segment = new THREE.Mesh(this.geometries.segment, this.materials.snakeBody.clone());
+                segment.castShadow = true; // If using shadows
+                return segment;
+            }, 20);
+            this.obstaclePool = new ObjectPool(() => {
+                const obstacle = new THREE.Mesh(this.geometries.obstacle, this.materials.obstacle.clone());
+                obstacle.castShadow = true; // If using shadows
+                return obstacle;
+            }, CONFIG.MAX_OBSTACLE_COUNT * 1.5);
+            this.init(); // Call init before matrixRain if matrixRain depends on game elements
+            this.matrixRain = new MatrixRain(); // Initialize after main game setup if it interacts
+            this.setupEventListeners();
+            this.updateHighScoresTable();
+            GameState.changeState(GameState.MENU); // Start in menu
+        }
+        init() {
+            this.scene = new THREE.Scene();
+            this.scene.background = null; // For Matrix rain to show through
+// Add fog for depth with brighter color
+            this.scene.fog = new THREE.Fog(0x001100, CONFIG.GRID_SIZE * 0.8, CONFIG.GRID_SIZE * 2.5);
+            this.camera = new THREE.PerspectiveCamera(65, window.innerWidth / window.innerHeight, 0.1, 1000);
+            this.camera.position.set(0, CONFIG.GRID_SIZE * 0.4, CONFIG.GRID_SIZE * 0.9);
+            this.camera.lookAt(0, -CONFIG.GRID_SIZE * 0.1, 0);
+            this.renderer = new THREE.WebGLRenderer({
+                canvas: document.getElementById('gameCanvas'),
+                antialias: true,
+                alpha: true // Crucial for transparency
+            });
+            this.renderer.setSize(window.innerWidth, window.innerHeight);
+            this.renderer.setPixelRatio(window.devicePixelRatio);
+            this.renderer.shadowMap.enabled = true; // If you add shadows
+            // Post-processing for bloom
+            const renderPass = new RenderPass(this.scene, this.camera);
+            const bloomPass = new UnrealBloomPass(new THREE.Vector2(window.innerWidth, window.innerHeight), 1.2, 0.8, 0.75);
+            bloomPass.threshold = 0.0;
+            bloomPass.strength = 1.3; // Play with these
+            bloomPass.radius = 0.3;
+            this.composer = new EffectComposer(this.renderer);
+            this.composer.addPass(renderPass);
+            this.composer.addPass(bloomPass);
+            const gridHelper = new THREE.GridHelper(CONFIG.GRID_SIZE * CONFIG.CELL_SIZE, CONFIG.GRID_SIZE, 0x008800, 0x00FF00);
+            gridHelper.position.y = -CONFIG.CELL_SIZE / 2; // Align with snake plane
+            this.scene.add(gridHelper);
+            const ambientLight = new THREE.AmbientLight(0x404060, 0.1); // Soft ambient
+            this.scene.add(ambientLight);
+            const directionalLight = new THREE.DirectionalLight(0xffffee, 1.6);
+            directionalLight.position.set(75, 13, 10);
+            directionalLight.castShadow = true;
+            directionalLight.shadow.mapSize.width = 1024;
+            directionalLight.shadow.mapSize.height = 1024;
+            this.scene.add(directionalLight);
+            this.headLight = new THREE.PointLight(0x39FF14, 2, CONFIG.CELL_SIZE * 5); // Brighter, green light
+            this.headLight.castShadow = false; // Point lights can be expensive for shadows
+            this.scene.add(this.headLight);
+            this.particleSystem = new ParticleSystem(this.scene);
+            window.addEventListener('resize', () => {
+                this.camera.aspect = window.innerWidth / window.innerHeight;
+                this.camera.updateProjectionMatrix();
+                this.renderer.setSize(window.innerWidth, window.innerHeight);
+                this.composer.setSize(window.innerWidth, window.innerHeight); // Resize composer too
+            }, false);
+        }
+        placeFood() {
+            let foodPos;
+            let validPosition = false;
+            let attempts = 0;
+            const maxAttempts = 100;
+            const numCells = CONFIG.GRID_SIZE;
+            while (!validPosition && attempts < maxAttempts) {
+                // Generate random indices within the grid
+                const xIndex = Math.floor(Math.random() * numCells) - Math.floor((numCells - 1) / 2);
+                const zIndex = Math.floor(Math.random() * numCells) - Math.floor((numCells - 1) / 2);
+                foodPos = new THREE.Vector3(
+                    xIndex * CONFIG.CELL_SIZE,
+                    0, // Food on the grid plane
+                    zIndex * CONFIG.CELL_SIZE
+                );
+                let collisionWithSnake = this.snake.some(segment =>
+                    segment.position.distanceToSquared(foodPos) < (CONFIG.CELL_SIZE * 0.9)**2 // Use distanceSquared
+                );
+                let collisionWithObstacle = this.obstacles.some(obstacle =>
+                    obstacle.position.distanceToSquared(foodPos) < (CONFIG.CELL_SIZE * 0.9)**2
+                );
+                validPosition = !collisionWithSnake && !collisionWithObstacle;
+                attempts++;
+            }
+            if (validPosition) {
+                this.food.position.copy(foodPos);
+            } else {
+                console.warn("Could not find valid position for food. Placing at a default safe spot.");
+                // Fallback: try placing near origin, hoping it's clear
+                this.food.position.set(
+                    (Math.floor(Math.random() * 3) - 1) * CONFIG.CELL_SIZE,
+                    0,
+                    (Math.floor(Math.random() * 3) - 1) * CONFIG.CELL_SIZE
+                );
+            }
+        }
+        createObstacles() {
+            this.obstacles.forEach(obstacle => {
+                this.scene.remove(obstacle);
+                this.obstaclePool.release(obstacle);
+            });
+            this.obstacles = [];
+            const numCells = CONFIG.GRID_SIZE;
+            for (let i = 0; i < this.obstacleCount; i++) {
+                let obstaclePos;
+                let validPosition = false;
+                let attempts = 0;
+                const maxAttempts = 50;
+                while (!validPosition && attempts < maxAttempts) {
+                    const xIndex = Math.floor(Math.random() * numCells) - Math.floor((numCells - 1) / 2);
+                    const zIndex = Math.floor(Math.random() * numCells) - Math.floor((numCells - 1) / 2);
+                    obstaclePos = new THREE.Vector3(
+                        xIndex * CONFIG.CELL_SIZE,
+                        0, // Obstacles on the grid plane, but mesh is taller
+                        zIndex * CONFIG.CELL_SIZE
+                    );
+                    let tooCloseToStart = obstaclePos.lengthSq() < (CONFIG.CELL_SIZE * 4)**2; // Check squared length
+                    let collisionWithSnake = this.snake.some(segment =>
+                        segment.position.distanceToSquared(obstaclePos) < (CONFIG.CELL_SIZE * 2)**2
+                    );
+                    let collisionWithOtherObstacle = this.obstacles.some(existingObstacle =>
+                        existingObstacle.position.distanceToSquared(obstaclePos) < (CONFIG.CELL_SIZE * 1.5)**2 // Ensure spacing
+                    );
+                    validPosition = !tooCloseToStart && !collisionWithSnake && !collisionWithOtherObstacle;
+                    attempts++;
+                }
+                if (validPosition) {
+                    const obstacle = this.obstaclePool.get();
+                    obstacle.position.copy(obstaclePos);
+                    obstacle.position.y = (CONFIG.CELL_SIZE * 1.5 - CONFIG.CELL_SIZE) / 2 - CONFIG.CELL_SIZE / 2; // Adjust Y to sit on grid
+                    this.obstacles.push(obstacle);
+                    this.scene.add(obstacle);
+                }
+            }
+        }
+        clearGameObjects() {
+            this.snake.forEach(segment => {
+                this.scene.remove(segment);
+                this.segmentPool.release(segment);
+            });
+            this.snake = [];
+            if (this.food) {
+                this.scene.remove(this.food);
+                // No pool for food as it's a single, changing object
+            }
+            this.food = null;
+            this.obstacles.forEach(obstacle => {
+                this.scene.remove(obstacle);
+                this.obstaclePool.release(obstacle);
+            });
+            this.obstacles = [];
+            this.particleSystem.clear();
+        }
+        update(time) {
+            if (this.isPaused || this.isGameOver || GameState.currentState !== GameState.PLAYING) {
+                return;
+            }
+            if (time - this.lastUpdateTime < this.gameSpeed) {
+                return;
+            }
+            this.lastUpdateTime = time;
+            this.direction.copy(this.nextDirection); // More robust copy
+            const head = this.snake[0];
+            const newHeadPos = head.position.clone().add(this.direction); // CELL_SIZE is incorporated in direction
+            const halfGridWorld = (CONFIG.GRID_SIZE / 2) * CONFIG.CELL_SIZE;
+            if (
+                newHeadPos.x >= halfGridWorld || newHeadPos.x < -halfGridWorld ||
+                newHeadPos.z >= halfGridWorld || newHeadPos.z < -halfGridWorld
+            ) {
+                this.triggerGameOver();
+                return;
+            }
+            for (let i = 1; i < this.snake.length; i++) {
+                if (newHeadPos.distanceToSquared(this.snake[i].position) < (CONFIG.CELL_SIZE * 0.1)**2) { // Tighter collision
+                    this.triggerGameOver();
+                    return;
+                }
+            }
+            for (const obstacle of this.obstacles) {
+                if (newHeadPos.distanceToSquared(obstacle.position) < (CONFIG.CELL_SIZE * 0.75)**2) { // Check collision with obstacle
+                    this.triggerGameOver();
+                    return;
+                }
+            }
+            const newHead = this.segmentPool.get();
+            newHead.position.copy(newHeadPos);
+            newHead.material = this.materials.snakeHead; // Head material
+            if (this.snake.length > 0) {
+                this.snake[0].material = this.materials.snakeBody; // Old head becomes body
+            }
+            this.snake.unshift(newHead);
+            this.scene.add(newHead);
+            this.headLight.position.copy(newHeadPos); // Light follows head
+            if (this.food && newHeadPos.distanceToSquared(this.food.position) < (CONFIG.CELL_SIZE * 0.75)**2) {
+                const foodType = this.food.userData;
+                const basePoints = foodType.points || 1;
+                const currentTime = performance.now();
+                if (currentTime - this.lastFoodTime < CONFIG.COMBO_TIMEOUT) {
+                    this.comboCount++;
+                } else {
+                    this.comboCount = 1;
+                }
+                this.lastFoodTime = currentTime;
+                const points = basePoints * this.comboCount;
+                this.score += points;
+                if (this.comboCount > 1) {
+                    const comboElement = document.getElementById('combo');
+                    comboElement.textContent = `Combo x${this.comboCount}! +${points}`;
+                    comboElement.style.opacity = 1;
+                    setTimeout(() => { comboElement.style.opacity = 0; }, 2000);
+                }
+                document.getElementById('info').textContent = `Score: ${this.score} | High: ${Math.max(this.score, this.highScore)}`;
+                if (foodType.speedEffect) {
+                    this.gameSpeed = Math.max(50, this.gameSpeed + foodType.speedEffect); // Note: special food had -10, rare had +10
+                }
+                document.getElementById('eatSound').currentTime = 0;
+                document.getElementById('eatSound').play();
+                this.particleSystem.createFoodEffect(this.food.position.clone(), new THREE.Color(foodType.color));
+                this.chooseFoodType(); // Gets new food type, applies material
+                this.placeFood();      // Places it
+            } else {
+                const tail = this.snake.pop();
+                this.scene.remove(tail);
+                this.segmentPool.release(tail);
+            }
+            this.particleSystem.update();
+            for (let i = 0; i < this.snake.length; i++) {
+                const segment = this.snake[i];
+                // segment.rotation.y += Math.sin(time * 0.1 + i * 0.1) * 0.01; // Slower, more subtle
+                // segment.position.y = Math.sin(time * 0.01 + i * 0.2) * 0.1;  // Subtle bob
+//                segment.position.y = Math.sin(time * 0.01 + i * 0.2) * 1.5;  // Jumping
+            }
+            if (this.food) {
+                this.food.rotation.x += 0.01;
+                this.food.rotation.y += 0.02;
+                this.food.position.y = Math.sin(time * 0.0055) * 0.25 + 0.1; // Bobbing food
+            }
+        }
+        chooseFoodType() {
+            const rand = Math.random();
+            let foodTypeData;
+            let geometry;
+            if (rand < 0.05) { // 5% rare
+                foodTypeData = CONFIG.FOOD_TYPES[2];
+                geometry = this.geometries.foodTetrahedron;
+            } else if (rand < 0.25) { // 20% special
+                foodTypeData = CONFIG.FOOD_TYPES[1];
+                geometry = this.geometries.foodSphere;
+            } else { // 75% regular
+                foodTypeData = CONFIG.FOOD_TYPES[0];
+                geometry = this.geometries.foodBox;
+            }
+            const material = new THREE.MeshStandardMaterial({ // Use Standard for lighting
+                color: foodTypeData.color,
+                emissive: foodTypeData.color, // Make food glow
+                emissiveIntensity: 0.7,
+                roughness: 0.1,
+                metalness: 0.7,
+                wireframe: true
+            });
+            if (!this.food) {
+                this.food = new THREE.Mesh(geometry, material);
+                this.scene.add(this.food);
+            } else {
+                this.food.geometry.dispose(); // Dispose old geometry
+                this.food.geometry = geometry;
+                this.food.material.dispose(); // Dispose old material
+                this.food.material = material;
+            }
+            this.food.userData = foodTypeData;
+        }
+        resetGame() {
+            this.clearGameObjects();
+            // Stop sounds
+            ['eatSound', 'gameOverSound', 'bgMusic'].forEach(id => {
+                const sound = document.getElementById(id);
+                sound.pause();
+                sound.currentTime = 0;
+            });
+            this.direction.set(CONFIG.CELL_SIZE, 0, 0);
+            this.nextDirection.set(CONFIG.CELL_SIZE, 0, 0);
+            this.score = 0;
+            this.gameSpeed = CONFIG.BASE_SPEED * CONFIG.DIFFICULTY_LEVELS[this.currentDifficulty].speedMultiplier;
+            this.isGameOver = false;
+            this.isPaused = false;
+            GameState.currentState = GameState.PLAYING; // Set this before calling things that depend on it.
+            this.comboCount = 0;
+            this.lastFoodTime = 0;
+            this.obstacleCount = Math.floor(CONFIG.MAX_OBSTACLE_COUNT * CONFIG.DIFFICULTY_LEVELS[this.currentDifficulty].obstacleMultiplier);
+            const startSegment = this.segmentPool.get();
+            startSegment.position.set(0, 0, 0);
+            startSegment.material = this.materials.snakeHead; // Start with head material
+            this.snake.push(startSegment);
+            this.scene.add(startSegment);
+            this.headLight.position.copy(startSegment.position); // Initial light pos
+            this.chooseFoodType();
+            this.placeFood();
+            this.createObstacles();
+            document.getElementById('info').textContent = `Score: ${this.score} | High: ${this.highScore}`;
+            const music = document.getElementById('bgMusic');
+            music.volume = 0.2; // Quieter music
+            music.play().catch(e => console.warn("Music play failed:", e)); // Catch promise
+        }
+        startGame() {
+            this.resetGame(); // This sets GameState.PLAYING internally now
+            GameState.changeState(GameState.PLAYING); // Ensure UI updates
+            this.lastUpdateTime = performance.now(); // Initialize lastUpdateTime
+            if (this.gameLoopId) cancelAnimationFrame(this.gameLoopId); // Clear old loop
+            this.gameLoop();
+        }
+        triggerGameOver() {
+            if (this.isGameOver) return; // Prevent multiple triggers
+            this.isGameOver = true;
+            document.getElementById('finalScore').textContent = `Final Score: ${this.score}`;
+            const highScores = this.loadHighScores();
+            if (this.score > 0) {
+                highScores.push({ score: this.score, difficulty: this.currentDifficulty, date: new Date().toLocaleDateString() });
+                highScores.sort((a, b) => b.score - a.score);
+                const topScores = highScores.slice(0, CONFIG.HIGH_SCORES_COUNT);
+                localStorage.setItem('snakeHighScores', JSON.stringify(topScores));
+                this.highScore = Math.max(this.score, this.highScore); // Update current session high score
+            }
+            this.updateHighScoresTable();
+            document.getElementById('bgMusic').pause();
+            GameState.changeState(GameState.GAME_OVER);
+        }
+        gameLoop(time) { // time is passed by requestAnimationFrame
+            if (!this.isGameOver && GameState.currentState === GameState.PLAYING) {
+                this.update(time || performance.now()); // Use performance.now if time is undefined initially
+            }
+            this.render();
+            if (!this.isGameOver) { // Only loop if not game over
+                this.gameLoopId = requestAnimationFrame(this.gameLoop.bind(this));
+            } else {
+                if (this.gameLoopId) cancelAnimationFrame(this.gameLoopId); // Ensure loop stops
+            }
+        }
+        render() {
+            // this.renderer.render(this.scene, this.camera); // When using composer
+            if (this.composer) {
+                this.composer.render(this.scene, this.camera);
+            } else if (this.renderer && this.scene && this.camera) {
+                this.renderer.render(this.scene, this.camera);
+            }
+        }
+        setupEventListeners() {
+            document.addEventListener('keydown', this.handleKeyDown.bind(this));
+            const touchControlsDiv = document.getElementById('touchControls');
+            const preventDefaultAndStopPropagation = (e) => { e.preventDefault(); e.stopPropagation(); };
+            document.getElementById('upBtn').addEventListener('touchstart', (e) => { preventDefaultAndStopPropagation(e); this.handleDirectionChange(0, 0, -CONFIG.CELL_SIZE); });
+            document.getElementById('downBtn').addEventListener('touchstart', (e) => { preventDefaultAndStopPropagation(e); this.handleDirectionChange(0, 0, CONFIG.CELL_SIZE); });
+            document.getElementById('leftBtn').addEventListener('touchstart', (e) => { preventDefaultAndStopPropagation(e); this.handleDirectionChange(-CONFIG.CELL_SIZE, 0, 0); });
+            document.getElementById('rightBtn').addEventListener('touchstart', (e) => { preventDefaultAndStopPropagation(e); this.handleDirectionChange(CONFIG.CELL_SIZE, 0, 0); });
+            const gameCanvas = document.getElementById('gameCanvas');
+            gameCanvas.addEventListener('touchstart', preventDefaultAndStopPropagation, { passive: false });
+            gameCanvas.addEventListener('touchmove', preventDefaultAndStopPropagation, { passive: false });
+            if (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)) {
+                touchControlsDiv.style.display = 'block';
+            }
+            document.getElementById('startBtn').addEventListener('click', () => this.startGame());
+            document.getElementById('restartBtn').addEventListener('click', () => this.startGame());
+            document.getElementById('menuBtn').addEventListener('click', () => GameState.changeState(GameState.MENU));
+            document.getElementById('difficultyBtn').addEventListener('click', () => this.cycleDifficulty());
+            document.getElementById('resumeBtn').addEventListener('click', () => this.togglePause());
+            document.getElementById('quitBtn').addEventListener('click', () => {
+                this.isPaused = false; // Ensure unpaused
+                if (this.gameLoopId) cancelAnimationFrame(this.gameLoopId); // Stop game loop
+                document.getElementById('bgMusic').pause();
+                GameState.changeState(GameState.MENU);
+            });
+        }
+        cycleDifficulty() {
+            const difficulties = Object.keys(CONFIG.DIFFICULTY_LEVELS);
+            const currentIndex = difficulties.indexOf(this.currentDifficulty);
+            const nextIndex = (currentIndex + 1) % difficulties.length;
+            this.currentDifficulty = difficulties[nextIndex];
+            document.getElementById('difficultyBtn').textContent = `DIFFICULTY: ${this.currentDifficulty.toUpperCase()}`;
+        }
+        handleKeyDown(event) {
+            if (GameState.currentState === GameState.PLAYING && !this.isPaused) {
+                switch(event.key) {
+                    case 'ArrowUp': case 'w': case 'W': this.handleDirectionChange(0, 0, -CONFIG.CELL_SIZE); event.preventDefault(); break;
+                    case 'ArrowDown': case 's': case 'S': this.handleDirectionChange(0, 0, CONFIG.CELL_SIZE); event.preventDefault(); break;
+                    case 'ArrowLeft': case 'a': case 'A': this.handleDirectionChange(-CONFIG.CELL_SIZE, 0, 0); event.preventDefault(); break;
+                    case 'ArrowRight': case 'd': case 'D': this.handleDirectionChange(CONFIG.CELL_SIZE, 0, 0); event.preventDefault(); break;
+                    case 'p': case 'P': this.togglePause(); event.preventDefault(); break;
+                }
+            } else if (GameState.currentState === GameState.PAUSED && (event.key === 'p' || event.key === 'P')) {
+                this.togglePause(); event.preventDefault();
+            } else if ((GameState.currentState === GameState.GAME_OVER || GameState.currentState === GameState.MENU) && event.key === 'Enter') {
+                this.startGame(); event.preventDefault();
+            }
+        }
+        handleDirectionChange(dx, dy, dz) {
+            const newDir = new THREE.Vector3(dx, dy, dz);
+            // Prevent 180-degree turns. Dot product will be negative.
+            // direction is already scaled by CELL_SIZE
+            if (this.direction.dot(newDir) < - (CONFIG.CELL_SIZE * CONFIG.CELL_SIZE * 0.5) ) { // Compare against negative magnitude squared
+                return;
+            }
+            this.nextDirection.copy(newDir);
+        }
+        togglePause() {
+            if (GameState.currentState !== GameState.PLAYING && GameState.currentState !== GameState.PAUSED) return;
+            this.isPaused = !this.isPaused;
+            if (this.isPaused) {
+                GameState.changeState(GameState.PAUSED);
+                document.getElementById('bgMusic').pause();
+                if (this.gameLoopId) cancelAnimationFrame(this.gameLoopId); // Pause game loop
+            } else {
+                GameState.changeState(GameState.PLAYING);
+                document.getElementById('bgMusic').play().catch(e => console.warn("Music play failed:", e));
+                this.lastUpdateTime = performance.now(); // Reset update timer to prevent jump
+                this.gameLoop(); // Resume game loop
+            }
+        }
+        loadHighScores() {
+            const scores = localStorage.getItem('snakeHighScores');
+            return scores ? JSON.parse(scores) : [];
+        }
+        updateHighScoresTable() {
+            const highScores = this.loadHighScores();
+            const table = document.getElementById('scoresTable');
+            while (table.rows.length > 1) { table.deleteRow(1); } // Clear existing
+            highScores.forEach((entry, index) => {
+                const row = table.insertRow(-1);
+                row.insertCell(0).textContent = index + 1;
+                row.insertCell(1).textContent = entry.score;
+                row.insertCell(2).textContent = entry.difficulty;
+            });
+        }
+    }
+    // Create and start the game
+    const game = new SnakeGame();
+</script>
+</body>
+</html>