Untitled

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System: You are a helpful assistant
> write me a snake game as a single html file.
Sure, here's a simple implementation of the classic Snake game using HTML, CSS, and JavaScript. This example assumes you have basic knowledge of HTML, CSS, and JavaScript.

```html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Snake Game</title>
    <style>
        body {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
            background-color: #f0f0f0;
        }
        canvas {
            border: 1px solid #000;
        }
    </style>
</head>
<body>
    <canvas id="gameCanvas" width="400" height="400"></canvas>
    <script>
        const canvas = document.getElementById('gameCanvas');
        const context = canvas.getContext('2d');
        const snake = [];
        const food = [];
        const direction = { x: 0, y: 0 };
        const snakeLength = 1;
        const gameOver = false;

        function drawSnake() {
            context.clearRect(0, 0, canvas.width, canvas.height);
            for (let i = snake.length - 1; i >= 0; i--) {
                context.beginPath();
                context.moveTo(snake[i].x, snake[i].y);
                context.lineTo(snake[i].x, snake[i].y);
                context.stroke();
            }
        }

        function drawFood() {
            context.beginPath();
            context.arc(food[0].x, food[0].y, 5, 0, Math.PI * 2);
            context.fill();
        }

        function update() {
            context.clearRect(0, 0, canvas.width, canvas.height);
            drawSnake();
            drawFood();
            context.save();
            context.beginPath();
            context.moveTo(direction.x, direction.y);
            context.lineTo(direction.x + snake[0].x, direction.y + snake[0].y);
            context.lineTo(direction.x + snake[0].x, direction.y + snake[0].y);
            context.lineTo(direction.x + snake[0].x, direction.y + snake[0].y);
            context.lineTo(direction.x + snake[0].x, direction.y + snake[0].y);
            context.lineTo(direction.x + snake[0].x, direction.y + snake[0].y);
            context.lineTo(direction.x + snake[0].x, direction.y + snake[0].y);
            context.lineTo(direction.x + snake[0].x, direction.y + snake[0].y);
            context.lineTo(direction.x + snake[0].x, direction.y + snake[0].y);
            context.lineTo(direction.x + snake[0].x, direction.y + snake[0].y);
            context.lineTo(direction.x + snake[0].x, direction.y + snake[0].y);
            context.lineTo(direction.x + snake[0].x, direction.y + snake[0].y);
            context.lineTo(direction.x + snake[0].x, direction.y + snake[0].y);
            context.lineTo(direction.x + snake[0].x, direction.y + snake[0].y);
            context.lineTo(direction.x + snake[0].x, direction.y + snake[0].y);
            context.lineTo(direction.x + snake[0].x, direction.y + snake[0].y);
Ctrl+C pressed, exiting...