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index.html
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<!DOCTYPE html>
<html>
<head>
<title>AI Snake</title>
<style>
:root {
--bg-color: #1a1a1a;
--card-bg: #2d2d2d;
--text-color: #ffffff;
--primary: #00ff88;
--secondary: #696969;
}
body {
font-family: 'Segoe UI', sans-serif;
background-color: var(--bg-color);
color: var(--text-color);
margin: 0;
padding: 20px;
}
.container {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
gap: 2rem;
max-width: 1400px;
margin: 0 auto;
}
.card {
background: var(--card-bg);
border-radius: 12px;
padding: 1.5rem;
box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
canvas {
border-radius: 8px;
background: #000;
}
.controls {
display: flex;
flex-wrap: wrap;
gap: 1rem;
margin: 1rem 0;
}
.param-group {
display: flex;
flex-direction: column;
gap: 0.5rem;
min-width: 180px;
}
input[type="range"], input[type="number"] {
width: 100%;
accent-color: var(--primary);
}
button {
background: var(--primary);
color: #000;
border: none;
padding: 0.8rem 1.5rem;
border-radius: 6px;
cursor: pointer;
font-weight: 600;
transition: opacity 0.2s;
}
button:hover {
opacity: 0.8;
}
.model-management {
display: flex;
gap: 1rem;
align-items: center;
margin-bottom: 1rem;
}
select {
background: var(--secondary);
color: white;
border: none;
padding: 0.5rem;
border-radius: 4px;
}
.stats {
display: grid;
gap: 0.5rem;
margin-top: 1rem;
}
.stats span {
color: var(--primary);
font-weight: bold;
}
</style>
</head>
<body>
<div class="container">
<div class="card">
<h2>Model Management</h2>
<div class="model-management">
<input type="text" id="modelName" placeholder="Model name" style="flex:1">
<button onclick="saveModel()">💾 Save</button>
<select id="savedModels" onchange="loadModel(this.value)"></select>
</div>
<div class="controls">
<div class="param-group">
<label>α (Learning Rate)</label>
<input type="number" id="alpha" min="0" max="1" step="0.01" value="0.1">
</div>
<div class="param-group">
<label>γ (Discount Factor)</label>
<input type="number" id="gamma" min="0" max="1" step="0.01" value="0.9">
</div>
<div class="param-group">
<label>ε (Exploration)</label>
<input type="number" id="epsilon" min="0" max="1" step="0.01" value="0">
</div>
<div class="param-group">
<label>ε Decay</label>
<input type="number" id="epsilonDecay" min="0.9" max="0.999" step="0.001" value="0.995">
</div>
</div>
</div>
<div class="card">
<h2>Training Mode</h2>
<div class="controls">
<div class="param-group">
<label>Speed</label>
<input type="range" id="trainSpeed" min="1" max="100" value="50">
</div>
</div>
<canvas id="gameCanvas" width="400" height="400"></canvas>
<div class="stats">
<div>Score: <span id="score">0</span></div>
<div>High Score: <span id="highScore">0</span></div>
<div>Games Played: <span id="gamesPlayed">0</span></div>
<div>Current ε: <span id="epsilonValue">0.00</span></div>
</div>
</div>
<div class="card">
<h2>Play Mode</h2>
<div class="controls">
<button id="playButton">▶ Start Play</button>
<div class="param-group">
<label>Speed</label>
<input type="range" id="playSpeed" min="50" max="500" value="200">
</div>
</div>
<canvas id="playCanvas" width="400" height="400"></canvas>
<div class="stats">
<div>Score: <span id="playScore">0</span></div>
<div>High Score: <span id="playHighScore">0</span></div>
</div>
</div>
</div>
<script>
class SnakeGame {
constructor(canvas, gridSize = 20) {
this.canvas = canvas;
this.ctx = canvas.getContext('2d');
this.gridSize = gridSize;
this.reset();
}
reset() {
this.snake = [{x: 10, y: 10}];
this.food = this.generateFood();
this.dx = 1;
this.dy = 0;
this.score = 0;
this.gameOver = false;
}
generateFood() {
while(true) {
const food = {
x: Math.floor(Math.random() * (this.canvas.width / this.gridSize)),
y: Math.floor(Math.random() * (this.canvas.height / this.gridSize))
};
if (!this.snake.some(segment => segment.x === food.x && segment.y === food.y)) {
return food;
}
}
}
getState() {
const head = this.snake[0];
const state = {
dangerUp: head.y === 0 || this.snake.some(segment => segment.x === head.x && segment.y === head.y - 1),
dangerDown: head.y === (this.canvas.height / this.gridSize) - 1 || this.snake.some(segment => segment.x === head.x && segment.y === head.y + 1),
dangerLeft: head.x === 0 || this.snake.some(segment => segment.x === head.x - 1 && segment.y === head.y),
dangerRight: head.x === (this.canvas.width / this.gridSize) - 1 || this.snake.some(segment => segment.x === head.x + 1 && segment.y === head.y),
foodUp: head.y > this.food.y,
foodDown: head.y < this.food.y,
foodLeft: head.x > this.food.x,
foodRight: head.x < this.food.x,
dirUp: this.dy === -1,
dirDown: this.dy === 1,
dirLeft: this.dx === -1,
dirRight: this.dx === 1
};
return Object.values(state).map(Number).join('');
}
step(action) {
if (this.gameOver) return -10;
const directions = [
[-1, 0], [1, 0], [0, -1], [0, 1]
];
const [newDx, newDy] = directions[action];
if (this.dx + newDx !== 0 || this.dy + newDy !== 0) {
this.dx = newDx;
this.dy = newDy;
}
const newHead = {
x: this.snake[0].x + this.dx,
y: this.snake[0].y + this.dy
};
if (newHead.x < 0 || newHead.x >= this.canvas.width / this.gridSize ||
newHead.y < 0 || newHead.y >= this.canvas.height / this.gridSize ||
this.snake.some(segment => segment.x === newHead.x && segment.y === newHead.y)) {
this.gameOver = true;
return -10;
}
this.snake.unshift(newHead);
if (newHead.x === this.food.x && newHead.y === this.food.y) {
this.score += 1;
this.food = this.generateFood();
return 10;
}
this.snake.pop();
return -0.1;
}
draw() {
this.ctx.fillStyle = 'black';
this.ctx.fillRect(0, 0, this.canvas.width, this.canvas.height);
this.snake.forEach((segment, index) => {
this.ctx.fillStyle = index === 0 ? '#00ff88' : '#007a46';
this.ctx.fillRect(
segment.x * this.gridSize,
segment.y * this.gridSize,
this.gridSize - 2,
this.gridSize - 2
);
});
this.ctx.fillStyle = 'red';
this.ctx.fillRect(
this.food.x * this.gridSize,
this.food.y * this.gridSize,
this.gridSize - 2,
this.gridSize - 2
);
}
}
class RLAgent {
constructor() {
this.loadParams();
this.loadQTable('default');
}
loadParams() {
this.alpha = parseFloat(alpha.value);
this.gamma = parseFloat(gamma.value);
this.epsilon = parseFloat(epsilon.value);
this.epsilonDecay = parseFloat(epsilonDecay.value);
this.saveParams();
}
saveParams() {
localStorage.setItem(`${this.currentModel}_params`, JSON.stringify({
alpha: this.alpha,
gamma: this.gamma,
epsilon: this.epsilon,
epsilonDecay: this.epsilonDecay
}));
}
loadQTable(modelName) {
this.currentModel = modelName;
this.qTable = JSON.parse(localStorage.getItem(modelName)) || {};
const params = JSON.parse(localStorage.getItem(`${modelName}_params`));
if (params) {
this.alpha = params.alpha;
this.gamma = params.gamma;
this.epsilon = params.epsilon;
this.epsilonDecay = params.epsilonDecay;
updateParamInputs(params);
}
}
saveQTable() {
localStorage.setItem(this.currentModel, JSON.stringify(this.qTable));
this.saveParams();
}
getAction(state, training = true) {
if (training && Math.random() < this.epsilon) {
return Math.floor(Math.random() * 4);
}
return this.qTable[state] ? this.qTable[state].indexOf(Math.max(...this.qTable[state])) : 0;
}
learn(state, action, reward, nextState) {
if (!this.qTable[state]) this.qTable[state] = [0, 0, 0, 0];
if (!this.qTable[nextState]) this.qTable[nextState] = [0, 0, 0, 0];
const predict = this.qTable[state][action];
const target = reward + this.gamma * Math.max(...this.qTable[nextState]);
this.qTable[state][action] += this.alpha * (target - predict);
}
decayEpsilon() {
this.epsilon = Math.max(0.01, this.epsilon * this.epsilonDecay);
}
}
function saveModel() {
const modelName = document.getElementById('modelName').value || `model_${Date.now()}`;
agent.currentModel = modelName;
agent.saveQTable();
updateModelList();
}
function loadModel(modelName) {
agent.loadQTable(modelName);
epsilonValue.textContent = agent.epsilon.toFixed(2);
}
function updateModelList() {
const select = document.getElementById('savedModels');
select.innerHTML = Object.keys(localStorage)
.filter(k => !k.endsWith('_params'))
.map(k => `<option>${k}</option>`);
}
function updateParamInputs(params) {
alpha.value = params.alpha;
gamma.value = params.gamma;
epsilon.value = params.epsilon;
epsilonDecay.value = params.epsilonDecay;
}
const agent = new RLAgent();
const game = new SnakeGame(document.getElementById('gameCanvas'));
const playGame = new SnakeGame(document.getElementById('playCanvas'));
let playInterval = null;
let isPlaying = false;
const scoreElement = document.getElementById('score');
const highScoreElement = document.getElementById('highScore');
const gamesPlayedElement = document.getElementById('gamesPlayed');
const epsilonValue = document.getElementById('epsilonValue');
const playScoreElement = document.getElementById('playScore');
const playHighScoreElement = document.getElementById('playHighScore');
const trainSpeed = document.getElementById('trainSpeed');
const playSpeed = document.getElementById('playSpeed');
let highScore = 0;
let gamesPlayed = 0;
let playHighScore = 0;
let trainInterval = null;
[alpha, gamma, epsilon, epsilonDecay].forEach(input => {
input.addEventListener('change', () => {
agent.loadParams();
epsilonValue.textContent = agent.epsilon.toFixed(2);
});
});
document.getElementById('playButton').addEventListener('click', () => {
isPlaying = !isPlaying;
document.getElementById('playButton').textContent = isPlaying ? '⏹ Stop Play' : '▶ Start Play';
if (isPlaying) {
playGame.reset();
playInterval = setInterval(playLoop, playSpeed.value);
} else {
clearInterval(playInterval);
}
});
trainSpeed.addEventListener('input', () => {
clearInterval(trainInterval);
trainInterval = setInterval(gameLoop, trainSpeed.value);
});
playSpeed.addEventListener('input', () => {
if (isPlaying) {
clearInterval(playInterval);
playInterval = setInterval(playLoop, playSpeed.value);
}
});
function gameLoop() {
if (game.gameOver) {
gamesPlayed++;
gamesPlayedElement.textContent = gamesPlayed;
if (game.score > highScore) {
highScore = game.score;
highScoreElement.textContent = highScore;
}
agent.decayEpsilon();
epsilonValue.textContent = agent.epsilon.toFixed(2);
game.reset();
}
const state = game.getState();
const action = agent.getAction(state);
const reward = game.step(action);
const nextState = game.getState();
agent.learn(state, action, reward, nextState);
game.draw();
scoreElement.textContent = game.score;
agent.saveQTable();
}
function playLoop() {
if (playGame.gameOver) {
if (playGame.score > playHighScore) {
playHighScore = playGame.score;
playHighScoreElement.textContent = playHighScore;
}
playGame.reset();
}
const state = playGame.getState();
const action = agent.getAction(state, false);
playGame.step(action);
playGame.draw();
playScoreElement.textContent = playGame.score;
}
updateModelList();
trainInterval = setInterval(gameLoop, trainSpeed.value);
epsilonValue.textContent = agent.epsilon.toFixed(2);
</script>
</body>