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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>Pong Game</title>
    <style>
        body {
            margin: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            height: 100vh;
            background-color: #000;
        }
        canvas {
            border: 2px solid #fff;
        }
        .controls {
            margin-top: 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        .speed-control {
            margin-top: 10px;
        }
    </style>
</head>
<body>
    <canvas id="pongCanvas"></canvas>
    <div class="controls">
        <button id="playerVsPlayer">Player vs Player</button>
        <button id="playerVsAI">Player vs AI</button>
        <div class="speed-control">
            <label for="ballSpeed">Ball Speed:</label>
            <input type="range" id="ballSpeed" min="1" max="10" value="7" oninput="updateBallSpeed(this.value)">
        </div>
    </div>
    <script>
        const canvas = document.getElementById('pongCanvas');
        const ctx = canvas.getContext('2d');

        // Set canvas dimensions
        canvas.width = 800;
        canvas.height = 600;

        // Ball properties
        const ball = {
            x: canvas.width / 2,
            y: canvas.height / 2,
            radius: 10,
            speed: 7,
            dx: 4,
            dy: -4
        };

        // Paddle properties
        const paddleWidth = 10;
        const paddleHeight = 100;
        const leftPaddle = {
            x: 0,
            y: (canvas.height - paddleHeight) / 2,
            width: paddleWidth,
            height: paddleHeight,
            speed: 8
        };
        const rightPaddle = {
            x: canvas.width - paddleWidth,
            y: (canvas.height - paddleHeight) / 2,
            width: paddleWidth,
            height: paddleHeight,
            speed: 8
        };

        // Player scores
        let leftScore = 0;
        let rightScore = 0;

        // Game mode
        let isPlayerVsAI = false;

        // Update ball speed
        function updateBallSpeed(newSpeed) {
            ball.speed = newSpeed;
            ball.dx = Math.sign(ball.dx) * newSpeed;
            ball.dy = Math.sign(ball.dy) * newSpeed;
        }

        // Draw functions
        function drawBall() {
            ctx.beginPath();
            ctx.arc(ball.x, ball.y, ball.radius, 0, Math.PI * 2);
            ctx.fillStyle = '#fff';
            ctx.fill();
            ctx.closePath();
        }

        function drawPaddle(paddle) {
            ctx.beginPath();
            ctx.rect(paddle.x, paddle.y, paddle.width, paddle.height);
            ctx.fillStyle = '#fff';
            ctx.fill();
            ctx.closePath();
        }

        function drawScores() {
            ctx.font = '30px Arial';
            ctx.fillStyle = '#fff';
            ctx.fillText(leftScore, canvas.width / 4, 50);
            ctx.fillText(rightScore, 3 * canvas.width / 4, 50);
        }

        // Update game state
        function update() {
            // Move ball
            ball.x += ball.dx;
            ball.y += ball.dy;

            // Bounce ball off top and bottom walls
            if (ball.y + ball.radius > canvas.height || ball.y - ball.radius < 0) {
                ball.dy = -ball.dy;
            }

            // Bounce ball off paddles
            if (ball.x - ball.radius < leftPaddle.x + leftPaddle.width &&
                ball.y > leftPaddle.y && ball.y < leftPaddle.y + leftPaddle.height) {
                ball.dx = -ball.dx;
            }
            if (ball.x + ball.radius > rightPaddle.x &&
                ball.y > rightPaddle.y && ball.y < rightPaddle.y + rightPaddle.height) {
                ball.dx = -ball.dx;
            }

            // Score points
            if (ball.x - ball.radius < 0) {
                rightScore++;
                resetBall();
            }
            if (ball.x + ball.radius > canvas.width) {
                leftScore++;
                resetBall();
            }

            // Move paddles
            if (!isPlayerVsAI) {
                if (keys['ArrowUp'] && rightPaddle.y > 0) {
                    rightPaddle.y -= rightPaddle.speed;
                }
                if (keys['ArrowDown'] && rightPaddle.y < canvas.height - rightPaddle.height) {
                    rightPaddle.y += rightPaddle.speed;
                }
            } else {
                // AI logic
                if (rightPaddle.y + rightPaddle.height / 2 < ball.y) {
                    rightPaddle.y += rightPaddle.speed;
                } else if (rightPaddle.y + rightPaddle.height / 2 > ball.y) {
                    rightPaddle.y -= rightPaddle.speed;
                }
            }

            if (keys['w'] && leftPaddle.y > 0) {
                leftPaddle.y -= leftPaddle.speed;
            }
            if (keys['s'] && leftPaddle.y < canvas.height - leftPaddle.height) {
                leftPaddle.y += leftPaddle.speed;
            }
        }

        // Reset ball position
        function resetBall() {
            ball.x = canvas.width / 2;
            ball.y = canvas.height / 2;
            ball.dx = -ball.dx;
        }

        // Draw everything
        function draw() {
            ctx.clearRect(0, 0, canvas.width, canvas.height);
            drawBall();
            drawPaddle(leftPaddle);
            drawPaddle(rightPaddle);
            drawScores();
        }

        // Game loop
        function gameLoop() {
            update();
            draw();
            requestAnimationFrame(gameLoop);
        }

        // Key handling
        const keys = {};
        document.addEventListener('keydown', function(e) {
            keys[e.key] = true;
        });
        document.addEventListener('keyup', function(e) {
            delete keys[e.key];
        });

        // Button event listeners
        document.getElementById('playerVsPlayer').addEventListener('click', function() {
            isPlayerVsAI = false;
        });

        document.getElementById('playerVsAI').addEventListener('click', function() {
            isPlayerVsAI = true;
        });

        // Start the game
        gameLoop();
    </script>
</body>
</html>