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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>Space Invaders</title>
<style>
body {
margin: 0;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
background-color: black;
color: white;
font-family: Arial, sans-serif;
}
.game {
position: relative;
width: 600px;
height: 600px;
background-color: #111;
overflow: hidden;
}
.player {
position: absolute;
bottom: 20px;
left: 50%;
width: 40px;
height: 40px;
background-color: white;
transform: translateX(-50%);
}
.invaders {
position: absolute;
top: 20px;
left: 0;
width: 100%;
display: flex;
flex-wrap: wrap;
}
.invader {
width: 40px;
height: 40px;
background-color: red;
margin: 5px;
}
.bullet {
position: absolute;
width: 5px;
height: 20px;
background-color: yellow;
}
.scoreboard {
position: absolute;
top: 10px;
left: 10px;
font-size: 20px;
}
.start-menu {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
text-align: center;
}
.start-menu button {
margin: 10px;
padding: 10px 20px;
font-size: 16px;
}
.game-over-message {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
font-size: 24px;
text-align: center;
display: none;
}
.restart-button {
position: absolute;
top: 60%;
left: 50%;
transform: translate(-50%, -50%);
font-size: 24px;
text-align: center;
display: none;
padding: 10px 20px;
background-color: #333;
color: white;
border: none;
cursor: pointer;
}
</style>
</head>
<body>
<!-- Added audio element for background music -->
<audio id="backgroundMusic" src="Jupiter.mp3" loop></audio>
<div class="game">
<div class="scoreboard">Score: 0</div>
<div class="player"></div>
<div class="invaders"></div>
<div class="game-over-message">Game Over, <span id="username-display"></span>! Your score is: <span id="score-display"></span></div>
<button class="restart-button">Restart</button>
<div class="start-menu">
<h2>Enter Your Name</h2>
<input type="text" id="username" placeholder="Your name">
<h2>Select Difficulty</h2>
<button data-speed="1">Slow</button>
<button data-speed="2">Medium</button>
<button data-speed="3">Fast</button>
</div>
</div>
<script>
document.addEventListener('DOMContentLoaded', () => {
const game = document.querySelector('.game');
const player = document.querySelector('.player');
const invadersContainer = document.querySelector('.invaders');
const scoreboard = document.querySelector('.scoreboard');
const startMenu = document.querySelector('.start-menu');
const buttons = document.querySelectorAll('.start-menu button');
const usernameInput = document.getElementById('username');
const gameOverMessage = document.querySelector('.game-over-message');
const usernameDisplay = document.getElementById('username-display');
const scoreDisplay = document.getElementById('score-display');
const restartButton = document.querySelector('.restart-button');
const backgroundMusic = document.getElementById('backgroundMusic');
const playerSpeed = 10;
let playerPosition = 280;
let score = 0;
let invaderSpeed = 2;
let invaderInterval;
let username = '';
// Determine if touch events are supported
const isTouchDevice = 'ontouchstart' in window || navigator.maxTouchPoints > 0 || navigator.msMaxTouchPoints > 0;
if (isTouchDevice) {
// Touch events for mobile devices
game.addEventListener('touchstart', handleTouchStart);
game.addEventListener('touchmove', handleTouchMove);
game.addEventListener('touchend', handleTouchEnd);
} else {
// Keyboard events for desktop
document.addEventListener('keydown', movePlayer);
}
buttons.forEach(button => {
button.addEventListener('click', (e) => {
username = usernameInput.value.trim();
if (username === '') {
alert('Please enter your name.');
return;
}
invaderSpeed = parseInt(e.target.getAttribute('data-speed'));
startMenu.style.display = 'none';
startGame();
});
});
function startGame() {
// Adjust invader speed based on difficulty level
if (invaderSpeed === 1) {
invaderSpeed = 8; // Medium level
} else if (invaderSpeed === 3) {
invaderSpeed = 14; // Fast level (3 times faster)
}
createInvaders();
invaderInterval = setInterval(moveInvaders, 500);
setInterval(createInvaders, 5000); // Create new invaders every 5 seconds
// Play background music
backgroundMusic.play();
}
function createInvaders() {
const invaderCount = 30;
const invaderWidth = 50; // Including margin
const maxCols = Math.floor(game.offsetWidth / invaderWidth);
for (let i = 0; i < invaderCount; i++) {
const invader = document.createElement('div');
invader.classList.add('invader');
invader.style.position = 'absolute';
invader.style.left = (i % maxCols) * invaderWidth + 'px';
invader.style.top = Math.floor(i / maxCols) * 50 + 'px';
invadersContainer.appendChild(invader);
}
}
// Handle touch events for player movement and shooting
let touchStartX = null;
function handleTouchStart(event) {
const touch = event.touches[0];
touchStartX = touch.clientX;
}
function handleTouchMove(event) {
event.preventDefault();
}
function handleTouchEnd(event) {
const touch = event.changedTouches[0];
const touchEndX = touch.clientX;
// Determine swipe direction or tap for shooting
if (touchEndX < touchStartX) {
// Swipe left
movePlayer({ key: 'ArrowLeft' });
} else if (touchEndX > touchStartX) {
// Swipe right
movePlayer({ key: 'ArrowRight' });
} else {
// Tap for shooting
shoot();
}
}
// Move player based on keyboard events
function movePlayer(e) {
switch (e.key) {
case 'ArrowLeft':
if (playerPosition > 0) {
playerPosition -= playerSpeed;
player.style.left = playerPosition + 'px';
}
break;
case 'ArrowRight':
if (playerPosition < game.offsetWidth - player.offsetWidth) {
playerPosition += playerSpeed;
player.style.left = playerPosition + 'px';
}
break;
case ' ':
shoot();
break;
}
}
// Shoot bullet
function shoot() {
const bullet = document.createElement('div');
bullet.classList.add('bullet');
bullet.style.left = playerPosition + 17.5 + 'px'; // Center bullet to player
bullet.style.bottom = '60px'; // Starting position above player
game.appendChild(bullet);
moveBullet(bullet);
}
// Move bullet
function moveBullet(bullet) {
const bulletInterval = setInterval(() => {
const bulletBottom = parseInt(bullet.style.bottom.replace('px', ''));
if (bulletBottom >= game.offsetHeight) {
clearInterval(bulletInterval);
bullet.remove();
} else {
bullet.style.bottom = bulletBottom + 5 + 'px';
}
checkBulletCollision(bullet, bulletInterval);
}, 20);
}
// Check bullet collision with invaders
function checkBulletCollision(bullet, bulletInterval) {
const bulletRect = bullet.getBoundingClientRect();
document.querySelectorAll('.invader').forEach(invader => {
const invaderRect = invader.getBoundingClientRect();
if (bulletRect.top <= invaderRect.bottom && bulletRect.bottom >= invaderRect.top &&
bulletRect.left <= invaderRect.right && bulletRect.right >= invaderRect.left) {
bullet.remove();
invader.remove();
clearInterval(bulletInterval);
score++;
scoreboard.textContent = `Score: ${score}`;
}
});
}
// Move invaders
function moveInvaders() {
const invaders = Array.from(document.querySelectorAll('.invader'));
invaders.forEach(invader => {
const currentTop = parseInt(invader.style.top.replace('px', ''));
invader.style.top = currentTop + invaderSpeed + 'px';
});
// Check if invaders reach the bottom
invaders.forEach(invader => {
const invaderBottom = parseInt(invader.style.top.replace('px', '')) + invader.offsetHeight;
if (invaderBottom >= game.offsetHeight) {
gameOverMessage.style.display = 'block';
restartButton.style.display = 'block';
usernameDisplay.textContent = username;
scoreDisplay.textContent = score;
clearInterval(invaderInterval);
// Stop background music on game over
backgroundMusic.pause();
}
});
}
// Add event listener to restart button
restartButton.addEventListener('click', () => {
restartGame();
});
// Function to restart the game
function restartGame() {
// Reset game variables
playerPosition = 280;
score = 0;
invaderSpeed = 2;
username = '';
// Hide game over message and restart button
gameOverMessage.style.display = 'none';
restartButton.style.display = 'none';
// Reset player position
player.style.left = playerPosition + 'px';
// Reset scoreboard
scoreboard.textContent = `Score: ${score}`;
// Remove all invaders and bullets
document.querySelectorAll('.invader').forEach(invader => {
invader.remove();
});
document.querySelectorAll('.bullet').forEach(bullet => {
bullet.remove();
});
// Show start menu
startMenu.style.display = 'block';
// Restart background music
backgroundMusic.currentTime = 0;
backgroundMusic.play();
}
});
</script>
</body>
</html>
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