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script.js
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script.js
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var ball = document.getElementById('ball');
var rod1 = document.getElementById('rod1');
var rod2 = document.getElementById('rod2');
const storeName = "PPName";
const storeScore = "PPMaxScore";
const rod1Name = "Rod 1";
const rod2Name = "Rod 2";
let score,
maxScore,
movement,
rod,
ballSpeedX = 2,
ballSpeedY = 2;
let gameOn = false;
let windowWidth = window.innerWidth,
windowHeight = window.innerHeight;
(function () {
rod = localStorage.getItem(storeName);
maxScore = localStorage.getItem(storeScore);
if (rod === "null" || maxScore === "null") {
alert("This is the first time you are playing this game. LET'S START");
maxScore = 0;
rod = "Rod1"
} else {
alert(rod + " has maximum score of " + maxScore * 100);
}
resetBoard(rod);
})();
function resetBoard(rodName) {
rod1.style.left = (window.innerWidth - rod1.offsetWidth) / 2 + 'px';
rod2.style.left = (window.innerWidth - rod2.offsetWidth) / 2 + 'px';
ball.style.left = (windowWidth - ball.offsetWidth) / 2 + 'px';
// Lossing player gets the ball
if (rodName === rod2Name) {
ball.style.top = (rod1.offsetTop + rod1.offsetHeight) + 'px';
ballSpeedY = 2;
} else if (rodName === rod1Name) {
ball.style.top = (rod2.offsetTop - rod2.offsetHeight) + 'px';
ballSpeedY = -2;
}
score = 0;
gameOn = false;
}
function storeWin(rod, score) {
if (score > maxScore) {
maxScore = score;
localStorage.setItem(storeName, rod);
localStorage.setItem(storeScore, maxScore);
}
clearInterval(movement);
resetBoard(rod);
alert(rod + " wins with a score of " + (score * 100) + ". Max score is: " + (maxScore * 100));
}
window.addEventListener('keypress', function () {
let rodSpeed = 20;
let rodRect = rod1.getBoundingClientRect();
if (event.code === "KeyD" && ((rodRect.x + rodRect.width) < window.innerWidth)) {
rod1.style.left = (rodRect.x) + rodSpeed + 'px';
rod2.style.left = rod1.style.left;
} else if (event.code === "KeyA" && (rodRect.x > 0)) {
rod1.style.left = (rodRect.x) - rodSpeed + 'px';
rod2.style.left = rod1.style.left;
}
if (event.code === "Enter") {
if (!gameOn) {
gameOn = true;
let ballRect = ball.getBoundingClientRect();
let ballX = ballRect.x;
let ballY = ballRect.y;
let ballDia = ballRect.width;
let rod1Height = rod1.offsetHeight;
let rod2Height = rod2.offsetHeight;
let rod1Width = rod1.offsetWidth;
let rod2Width = rod2.offsetWidth;
movement = setInterval(function () {
// Move ball
ballX += ballSpeedX;
ballY += ballSpeedY;
rod1X = rod1.getBoundingClientRect().x;
rod2X = rod2.getBoundingClientRect().x;
ball.style.left = ballX + 'px';
ball.style.top = ballY + 'px';
if ((ballX + ballDia) > windowWidth || ballX < 0) {
ballSpeedX = -ballSpeedX; // Reverses the direction
}
// It specifies the center of the ball on the viewport
let ballPos = ballX + ballDia / 2;
// Check for Rod 1
if (ballY <= rod1Height) {
ballSpeedY = -ballSpeedY; // Reverses the direction
score++;
// Check if the game ends
if ((ballPos < rod1X) || (ballPos > (rod1X + rod1Width))) {
storeWin(rod2Name, score);
}
}
// Check for Rod 2
else if ((ballY + ballDia) >= (windowHeight - rod2Height)) {
ballSpeedY = -ballSpeedY; // Reverses the direction
score++;
// Check if the game ends
if ((ballPos < rod2X) || (ballPos > (rod2X + rod2Width))) {
storeWin(rod1Name, score);
}
}
}, 10);
}
}
});