2D Ping Pong
A 2D Ping Pong game in the style of Atari Pong.
AI
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A 2D Ping Pong game in the style of Atari Pong.
<html>
<head>
<script type="text/javascript"> window.addEventListener('error', function(event) { var message = JSON.parse(JSON.stringify(event.message)); var source = event.filename; var lineno = event.lineno; var colno = event.colno; var error = event.error; window.parent.postMessage({ type: 'iframeError', details: { message: message, source: source, lineno: lineno, colno: colno, error: error ? error.stack : '' } }, '*'); }); window.addEventListener('unhandledrejection', function(event) { window.parent.postMessage({ type: 'iframePromiseRejection', details: { reason: event.reason } }, '*'); }); </script>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>2D Ping Pong</title>
<meta name="description" content="A 2D Ping Pong game in the style of Atari Pong.">
<meta name="keywords" content="2D, Ping Pong, Atari, Pong">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
<!-- Built-In Functions for Apps -->
<script type="text/javascript">
var localStoragePrefix = "ct-168115255771388";
var lastSave = 0;
// save to localstorage
function saveLocal(data) {
if (Date.now() - lastSave < 1000) {
return;
}
// save to cookie
let cookie = localStoragePrefix + "=" + JSON.stringify(data) + "; path=" + window.location.pathname + "'; SameSite=Strict";
cookie += "; expires=" + new Date(Date.now() + 1000 * 60 * 60 * 24 * 365 * 1000).toUTCString();
document.cookie = cookie;
lastSave = Date.now();
}
// load from localstorage
function loadLocal() {
var cookiePrefix = localStoragePrefix + "=";
var cookieStart = document.cookie.indexOf(cookiePrefix);
if (cookieStart > -1) {
let cookieEnd = document.cookie.indexOf(";", cookieStart);
if (cookieEnd == -1) {
cookieEnd = document.cookie.length;
}
var cookieData = document.cookie.substring(cookieStart + cookiePrefix.length, cookieEnd);
return JSON.parse(cookieData);
}
}
</script>
<script type="text/javascript">
// App Javascript Goes Here
var canvas;
var ctx;
var ballX;
var ballY;
var ballSpeedX;
var ballSpeedY;
var player1Y;
var player2Y;
var player1Score;
var player2Score;
var WINNING_SCORE = 10;
var showingWinScreen;
var paddleHeight = 100;
var paddleWidth = 10;
var aiDifficulty = 5;
var ballRadius = 10;
function calculateMousePos(evt) {
var rect = canvas.getBoundingClientRect();
var root = document.documentElement;
var mouseX = evt.clientX - rect.left - root.scrollLeft;
var mouseY = evt.clientY - rect.top - root.scrollTop;
return {
x: mouseX,
y: mouseY
};
}
function handleMouseClick(evt) {
if (showingWinScreen) {
player1Score = 0;
player2Score = 0;
showingWinScreen = false;
}
}
function computerMovement() {
var player2YCenter = player2Y + (paddleHeight / 2);
if (player2YCenter < ballY - aiDifficulty) {
player2Y += aiDifficulty;
} else if (player2YCenter > ballY + aiDifficulty) {
player2Y -= aiDifficulty;
}
}
function ballReset() {
if (player1Score >= WINNING_SCORE || player2Score >= WINNING_SCORE) {
showingWinScreen = true;
}
ballX = canvas.width / 2;
ballY = canvas.height / 2;
ballSpeedX = -ballSpeedX;
}
function moveEverything() {
if (showingWinScreen) {
return;
}
computerMovement();
ballX += ballSpeedX;
ballY += ballSpeedY;
if (ballX < 0) {
if (ballY > player1Y && ballY < player1Y + paddleHeight) {
ballSpeedX = -ballSpeedX;
var deltaY = ballY - (player1Y + paddleHeight / 2);
ballSpeedY = deltaY * 0.35;
} else {
player2Score++; // must be before ballReset()
ballReset();
}
}
if (ballX > canvas.width) {
if (ballY > player2Y && ballY < player2Y + paddleHeight) {
ballSpeedX = -ballSpeedX;
var deltaY = ballY - (player2Y + paddleHeight / 2);
ballSpeedY = deltaY * 0.35;
} else {
player1Score++; // must be before ballReset()
ballReset();
}
}
if (ballY < 0) {
ballSpeedY = -ballSpeedY;
}
if (ballY > canvas.height) {
ballSpeedY = -ballSpeedY;
}
}
function drawNet() {
for (var i = 0; i < canvas.height; i += 40) {
colorRect(canvas.width / 2 - 1, i, 2, 20, 'white');
}
}
function drawEverything() {
// canvas
colorRect(0, 0, canvas.width, canvas.height, 'black');
if (showingWinScreen) {
ctx.fillStyle = 'white';
if (player1Score >= WINNING_SCORE) {
ctx.fillText("You Won!", canvas.width / 2, canvas.height / 2);
} else if (player2Score >= WINNING_SCORE) {
ctx.fillText("Computer Won!", canvas.width / 2, canvas.height / 2);
}
ctx.fillText("Click to Continue", canvas.width / 2, canvas.height / 2 + 50);
return;
}
drawNet();
// player paddle
colorRect(0, player1Y, paddleWidth, paddleHeight, 'white');
// computer paddle
colorRect(canvas.width - paddleWidth, player2Y, paddleWidth, paddleHeight, 'white');
// ball
ctx.beginPath();
ctx.arc(ballX, ballY, ballRadius, 0, Math.PI * 2, true);
ctx.fillStyle = 'white';
ctx.fill();
// score
ctx.fillText(player1Score, 100, 100);
ctx.fillText(player2Score, canvas.width - 100, 100);
}
function colorRect(leftX, topY, width, height, drawColor) {
ctx.fillStyle = drawColor;
ctx.fillRect(leftX, topY, width, height);
}
function startGame() {
canvas = document.getElementById('gameCanvas');
ctx = canvas.getContext('2d');
player1Score = 0;
player2Score = 0;
ballReset();
showingWinScreen = false;
player1Y = canvas.height / 2 - paddleHeight / 2;
player2Y = canvas.height / 2 - paddleHeight / 2;
canvas.addEventListener('mousedown', handleMouseClick);
setInterval(function() {
moveEverything();
drawEverything();
}, 1000 / 60);
}
</script>
<style>
/* App CSS Goes Here */
canvas {
width: 800px;
height: 600px;
background-color: black;
}
.container {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
}
.container canvas {
border: 2px solid white;
}
.container p {
color: white;
font-size: 36px;
text-align: center;
}
.container button {
margin-top: 20px;
padding: 10px 20px;
font-size: 24px;
background-color: white;
color: black;
border: none;
cursor: pointer;
}
</style>
<link rel="canonical" href="https://calculator.tools/prompt/80/">
<meta charset="utf-8">
</head>
<body onload="startGame()">
<div id="main-container" class="container">
<canvas id="gameCanvas"></canvas>
</div>
<script type="text/javascript"> var localStoragePrefix = "ct-{{ cachebreaker }}"; var lastSave = 0; function saveLocal(data) { if (Date.now() - lastSave < 1000) { return; } let cookie = localStoragePrefix + "=" + JSON.stringify(data) + "; path=" + window.location.pathname + "'; SameSite=Strict"; cookie += "; expires=" + new Date(Date.now() + 1000 * 60 * 60 * 24 * 365 * 1000).toUTCString(); document.cookie = cookie; lastSave = Date.now(); } function loadLocal() { var cookiePrefix = localStoragePrefix + "="; var cookieStart = document.cookie.indexOf(cookiePrefix); if (cookieStart > -1) { let cookieEnd = document.cookie.indexOf(";", cookieStart); if (cookieEnd == -1) { cookieEnd = document.cookie.length; } var cookieData = document.cookie.substring(cookieStart + cookiePrefix.length, cookieEnd); return JSON.parse(cookieData); } } </script>
<script type="text/javascript"> window.addEventListener('load', function() { var observer = new MutationObserver(function() { window.parent.postMessage({height: document.documentElement.scrollHeight || document.body.scrollHeight},"*"); }); observer.observe(document.body, {attributes: true, childList: true, subtree: true}); window.parent.postMessage({height: document.documentElement.scrollHeight || document.body.scrollHeight},"*"); }); </script>
</body>
</html>
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