Geometry Dash Game Clone HTML CSS JavaScript

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<!DOCTYPE html>
<html>
<head>
    <title>Geometry Dash Clone</title>
    <style>
        body {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
            background-color: #f0f0f0;
            font-family: sans-serif;
        }

#game {
            width: 600px;
            height: 200px;
            border: 5px solid #333;
            background-color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        }

#ground {
            position: absolute;
            bottom: 0;
            width: 100%;
            height: 20px;
            background-color: #333;
        }

#player {
            width: 20px;
            height: 20px;
            background-color: #ff5733;
            position: absolute;
            bottom: 20px; /* Starts on the ground */
            left: 50px;
            transition: bottom 0.3s cubic-bezier(0.25, 1, 0.5, 1); /* Smoother jump transition */
        }

.jump {
            bottom: 120px !important; /* Jump height */
        }

.obstacle {
            width: 20px;
            height: 20px;
            background-color: #4CAF50;
            position: absolute;
            bottom: 20px;
            animation: moveObstacle 1.5s linear infinite;
        }

@keyframes moveObstacle {
            0% { right: -20px; }
            100% { right: 600px; }
        }

#score {
            position: absolute;
            top: 10px;
            left: 10px;
            font-size: 1.2em;
            color: #333;
        }

#message {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: rgba(0, 0, 0, 0.8);
            color: white;
            padding: 20px;
            border-radius: 5px;
            display: none;
            cursor: pointer;
            z-index: 10;
        }
    </style>
</head>
<body>

<div id="game">
        <div id="score">Score: 0</div>
        <div id="player"></div>
        <div id="ground"></div>
        <div id="message">
            Game Over! Click to Restart.
        </div>
    </div>

let isJumping = false;
        let score = 0;
        let gameRunning = true;
        let obstacleInterval;
        let gameLoopInterval;

// --- Game Controls ---
        function jump() {
            if (!isJumping && gameRunning) {
                isJumping = true;
                player.classList.add('jump');

// Gravity simulation (remove jump class after transition)
                setTimeout(() => {
                    player.classList.remove('jump');
                    isJumping = false;
                }, 300); // Matches the CSS transition time
            }
        }

document.addEventListener('keydown', (event) => {
            if (event.code === 'Space' || event.key === ' ' || event.key === 'ArrowUp') {
                jump();
            }
        });

// --- Obstacle Generation ---
        function createObstacle() {
            if (!gameRunning) return;

const obstacle = document.createElement('div');
            obstacle.classList.add('obstacle');
            
            // Randomize height (optional for simple dash game)
            const height = Math.random() * 10 + 20;
            obstacle.style.height = `${height}px`;

// Set animation duration based on score (making it faster)
            const speedFactor = 1.5 - (score / 500);
            obstacle.style.animationDuration = `${Math.max(0.8, speedFactor)}s`;

game.appendChild(obstacle);

// Clean up old obstacles after they pass
            obstacle.addEventListener('animationend', () => {
                if (gameRunning) {
                    score++;
                    scoreDisplay.textContent = `Score: ${score}`;
                }
                obstacle.remove();
            });
        }
        
        function startGame() {
            // Clear previous state
            gameRunning = true;
            score = 0;
            scoreDisplay.textContent = `Score: 0`;
            message.style.display = 'none';
            player.classList.remove('jump');
            
            // Remove all existing obstacles
            document.querySelectorAll('.obstacle').forEach(o => o.remove());

// Start intervals
            obstacleInterval = setInterval(createObstacle, 1500); // Generate new obstacle every 1.5s
            gameLoopInterval = setInterval(checkCollision, 10); // Check collision 100 times per second
        }

function stopGame() {
            gameRunning = false;
            clearInterval(obstacleInterval);
            clearInterval(gameLoopInterval);
            message.style.display = 'block';
            
            // Stop all current CSS animations immediately
            document.querySelectorAll('.obstacle').forEach(o => {
                o.style.animationPlayState = 'paused';
            });
        }

// --- Collision Detection ---
        function checkCollision() {
            if (!gameRunning) return;

const playerRect = player.getBoundingClientRect();
            const gameRect = game.getBoundingClientRect();

// Adjust player coordinates relative to the game container
            const playerBottom = gameRect.bottom - playerRect.bottom;
            const playerLeft = playerRect.left - gameRect.left;
            const playerRight = playerLeft + playerRect.width;

document.querySelectorAll('.obstacle').forEach(obstacle => {
                const obsRect = obstacle.getBoundingClientRect();

const obsBottom = gameRect.bottom - obsRect.bottom;
                const obsLeft = obsRect.left - gameRect.left;
                const obsRight = obsLeft + obsRect.width;

// Collision logic:
                // 1. Player is horizontally overlapping with obstacle
                const horizontalOverlap = playerRight > obsLeft && playerLeft < obsRight;
                
                // 2. Player is vertically overlapping (i.e., not jumped high enough)
                const verticalOverlap = playerBottom < obsRect.height;

if (horizontalOverlap && verticalOverlap) {
                    stopGame();
                }
            });
        }

// --- Initialization ---
        message.addEventListener('click', startGame);
        
        // Initial setup instruction
        message.innerHTML = 'Click to Start Game (Use SPACE to Jump)';
        message.style.display = 'block';

</script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Geometry Dash Concept</title>
    <style>
        body {
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            margin: 0;
            background-color: #000;
            overflow: hidden;
            font-family: sans-serif;
        }

.game-container {
            width: 800px;
            height: 200px;
            background-color: #1a1a1a;
            position: relative;
            border: 5px solid #fff;
            box-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
        }

/* The Ground Plane */
        .ground {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 20px;
            background-color: #333;
            border-top: 3px solid #ff0000; /* Red line indicator */
        }

/* The Player Cube */
        .player {
            width: 40px;
            height: 40px;
            background-color: #ffd700; /* Gold/Yellow */
            position: absolute;
            bottom: 20px; /* Sits on the ground */
            left: 50px;
            border: 3px solid #000;
            box-shadow: 0 0 10px rgba(255, 255, 0, 0.8);
            
            /* Simple jump/bounce simulation */
            animation: jump 2s infinite ease-in-out;
        }
        
        @keyframes jump {
            0% { transform: translateY(0) rotate(0deg); }
            40% { transform: translateY(-80px) rotate(90deg); }
            60% { transform: translateY(-80px) rotate(90deg); }
            100% { transform: translateY(0) rotate(180deg); }
        }

/* The Spike Obstacle */
        .spike {
            position: absolute;
            bottom: 20px; /* Sits on the ground */
            left: 300px;
            width: 0;
            height: 0;
            border-left: 25px solid transparent;
            border-right: 25px solid transparent;
            border-bottom: 40px solid #ff0000; /* Red triangle */
            z-index: 10;
        }

/* Decorative text */
        .title {
            position: absolute;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            color: #fff;
            font-size: 24px;
            font-weight: bold;
            text-shadow: 0 0 5px #ff0000;
        }

</style>
</head>
<body>

<div class="game-container">
        <div class="title">GEOMETRY DASH (CSS Simulation)</div>
        <div class="ground"></div>
        <div class="spike"></div>
        <div class="player"></div>
    </div>

</body>
</html>

CSS

Geometry Dash Game Clone HTML CSS JavaScript

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