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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> |