Games-code/Flappy_Bird.html at main · MilindLate/Games-code · GitHub

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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>Flappy Bird Game</title>
    <!-- Load Tailwind CSS for utility classes on the container and controls -->
    <script src="https://cdn.tailwindcss.com"></script>
    <style>
        /* Custom styles for the game container and canvas */
        body {
            font-family: 'Inter', sans-serif;
            background-color: #1f2937; /* Dark background */
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            margin: 0;
            padding: 20px;
        }

        #game-container {
            width: 100%;
            max-width: 480px; /* Standard mobile/game width */
            border: 8px solid #fcd34d; /* Yellow border */
            border-radius: 12px;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5), inset 0 0 15px rgba(255, 255, 255, 0.2);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            background-color: #374151; /* Darker internal background */
        }

        #gameCanvas {
            display: block;
            width: 100%;
            /* Aspect ratio 16:9 for the canvas area */
            aspect-ratio: 16 / 9;
            background: linear-gradient(to bottom, #7dd3fc, #3b82f6); /* Blue sky gradient */
            cursor: pointer;
        }

        .game-ui {
            padding: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: #f3f4f6;
            font-size: 1.25rem;
            font-weight: bold;
        }

        .control-panel {
            padding: 1rem;
            display: flex;
            justify-content: center;
        }

        .game-button {
            padding: 0.75rem 1.5rem;
            border-radius: 8px;
            font-weight: bold;
            text-transform: uppercase;
            cursor: pointer;
            transition: all 0.2s;
            box-shadow: 0 4px #c2410c;
            background-color: #f97316; /* Orange button */
            color: white;
            border: none;
        }

        .game-button:hover {
            background-color: #ea580c;
        }

        .game-button:active {
            box-shadow: 0 0 #c2410c;
            transform: translateY(4px);
        }

        #messageBox {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            color: white;
            display: flex;
            justify-content: center;
            align-items: center;
            flex-direction: column;
            text-align: center;
            visibility: hidden;
            opacity: 0;
            transition: opacity 0.3s;
            border-radius: 12px;
        }

        #messageBox.active {
            visibility: visible;
            opacity: 1;
        }

        #messageBox h2 {
            font-size: 3rem;
            margin-bottom: 0.5rem;
            text-shadow: 0 0 10px #fcd34d;
        }

        #messageBox p {
            font-size: 1.5rem;
            margin-bottom: 2rem;
        }

        #highScoreText {
            color: #fcd34d; /* Yellow for high score */
        }
    </style>
</head>
<body>

<div id="game-container" class="relative">
    <div class="game-ui">
        <div id="scoreDisplay">Score: 0</div>
        <div id="highScoreText">High Score: 0</div>
    </div>
    <canvas id="gameCanvas"></canvas>

    <div id="messageBox">
        <h2 id="messageTitle">Flappy Bird Clone</h2>
        <p id="messageBody">Click or press Space to jump!</p>
        <button id="startButton" class="game-button">Start Game</button>
    </div>

    <div class="control-panel">
        <button id="restartButton" class="game-button hidden">Restart Game</button>
    </div>
</div>

<script>
    // --- CANVAS AND CONTEXT SETUP ---
    const canvas = document.getElementById('gameCanvas');
    const ctx = canvas.getContext('2d');
    const gameContainer = document.getElementById('game-container');
    const scoreDisplay = document.getElementById('scoreDisplay');
    const highScoreText = document.getElementById('highScoreText');
    const messageBox = document.getElementById('messageBox');
    const messageTitle = document.getElementById('messageTitle');
    const messageBody = document.getElementById('messageBody');
    const startButton = document.getElementById('startButton');
    const restartButton = document.getElementById('restartButton');

    // --- GAME CONSTANTS AND STATE ---
    let game;
    let highscore = parseInt(localStorage.getItem('flappyHighScore')) || 0;

    // Function to handle canvas resize and keep it responsive
    function resizeCanvas() {
        // Set canvas dimensions based on the container width and aspect ratio (16:9)
        const containerWidth = gameContainer.clientWidth;
        canvas.width = containerWidth;
        canvas.height = containerWidth * (9 / 16);
        // Redraw content if necessary (for persistent elements, but here only for the start message)
        if (game && !game.isRunning) {
            drawStartScreen();
        }
    }

    // Initial resize and listener
    resizeCanvas();
    window.addEventListener('resize', resizeCanvas);

    // --- GAME CLASSES ---

    class Bird {
        constructor(x, y, radius) {
            this.x = x;
            this.y = y;
            this.radius = radius;
            this.vy = 0; // Vertical velocity
            this.gravity = 0.5;
            this.jumpStrength = -9;
            this.color = '#fcd34d'; // Yellow
        }

        update() {
            // Apply gravity
            this.vy += this.gravity;
            this.y += this.vy;

            // Simple velocity damping for smooth flight
            this.vy *= 0.98;

            // Keep bird within bounds (though hitting the ground is a game over)
            if (this.y + this.radius > canvas.height) {
                this.y = canvas.height - this.radius;
                this.vy = 0;
            }
            if (this.y - this.radius < 0) {
                this.y = this.radius;
                this.vy = 0;
            }
        }

        jump() {
            this.vy = this.jumpStrength;
        }

        draw() {
            ctx.beginPath();
            ctx.arc(this.x, this.y, this.radius, 0, Math.PI * 2);
            ctx.fillStyle = this.color;
            ctx.fill();
            ctx.strokeStyle = '#92400e';
            ctx.lineWidth = 2;
            ctx.stroke();

            // Draw a simple eye
            ctx.beginPath();
            ctx.arc(this.x + this.radius / 3, this.y - this.radius / 3, this.radius / 6, 0, Math.PI * 2);
            ctx.fillStyle = 'black';
            ctx.fill();
        }
    }

    class Pipe {
        constructor(x, width, gapHeight, gapY) {
            this.x = x;
            this.width = width;
            this.gapHeight = gapHeight;
            this.gapY = gapY; // Y-coordinate of the gap center
            this.vx = -3; // Pipe horizontal speed
            this.scored = false;
            this.color = '#10b981'; // Green pipe
        }

        update() {
            this.x += this.vx;
        }

        draw() {
            ctx.fillStyle = this.color;

            // Draw top pipe
            ctx.fillRect(this.x, 0, this.width, this.gapY - this.gapHeight / 2);

            // Draw bottom pipe
            ctx.fillRect(this.x, this.gapY + this.gapHeight / 2, this.width, canvas.height - (this.gapY + this.gapHeight / 2));

            // Add a darker border for depth
            ctx.strokeStyle = '#047857';
            ctx.lineWidth = 3;
            ctx.strokeRect(this.x, 0, this.width, this.gapY - this.gapHeight / 2);
            ctx.strokeRect(this.x, this.gapY + this.gapHeight / 2, this.width, canvas.height - (this.gapY + this.gapHeight / 2));
        }
    }

    class FlappyGame {
        constructor() {
            this.bird = new Bird(canvas.width / 4, canvas.height / 2, 20);
            this.pipes = [];
            this.score = 0;
            this.isRunning = false;
            this.pipeGap = 160;
            this.pipeWidth = 50;
            this.pipeSpawnInterval = 1500; // ms
            this.lastPipeTime = 0;
        }

        reset() {
            this.bird = new Bird(canvas.width / 4, canvas.height / 2, 20);
            this.pipes = [];
            this.score = 0;
            this.isRunning = true;
            this.lastPipeTime = performance.now();
            scoreDisplay.textContent = `Score: ${this.score}`;
            highScoreText.textContent = `High Score: ${highscore}`;
            messageBox.classList.remove('active');
            restartButton.classList.add('hidden');
        }

        spawnPipe() {
            // Random Y position for the gap center, ensuring it's not too close to top/bottom
            const minGapY = canvas.height * 0.25;
            const maxGapY = canvas.height * 0.75;
            const gapY = minGapY + (Math.random() * (maxGapY - minGapY));

            this.pipes.push(new Pipe(canvas.width, this.pipeWidth, this.pipeGap, gapY));
        }

        checkCollision() {
            const bird = this.bird;

            // 1. Check ground and ceiling collision
            if (bird.y + bird.radius >= canvas.height || bird.y - bird.radius <= 0) {
                return true;
            }

            // 2. Check pipe collisions
            for (const pipe of this.pipes) {
                // Check if the bird is horizontally aligned with the pipe
                if (bird.x + bird.radius > pipe.x && bird.x - bird.radius < pipe.x + pipe.width) {

                    // Top pipe collision
                    const topPipeBottom = pipe.gapY - pipe.gapHeight / 2;
                    if (bird.y - bird.radius < topPipeBottom) {
                        return true;
                    }

                    // Bottom pipe collision
                    const bottomPipeTop = pipe.gapY + pipe.gapHeight / 2;
                    if (bird.y + bird.radius > bottomPipeTop) {
                        return true;
                    }
                }
            }

            return false;
        }

        update(deltaTime) {
            if (!this.isRunning) return;

            this.bird.update();

            // Handle pipe spawning
            if (deltaTime - this.lastPipeTime > this.pipeSpawnInterval) {
                this.spawnPipe();
                this.lastPipeTime = deltaTime;
            }

            // Update and clean up pipes
            this.pipes = this.pipes.filter(pipe => {
                pipe.update();

                // Score check
                if (!pipe.scored && pipe.x + pipe.width < this.bird.x - this.bird.radius) {
                    this.score++;
                    pipe.scored = true;
                    scoreDisplay.textContent = `Score: ${this.score}`;
                }

                // Keep pipes that are still visible
                return pipe.x + pipe.width > 0;
            });

            // Check for game over
            if (this.checkCollision()) {
                this.endGame();
            }
        }

        draw() {
            // Clear canvas for the next frame
            ctx.clearRect(0, 0, canvas.width, canvas.height);

            // Draw ground (a simple green strip at the bottom)
            ctx.fillStyle = '#4ade80';
            ctx.fillRect(0, canvas.height - 30, canvas.width, 30);

            // Draw ground border
            ctx.strokeStyle = '#16a34a';
            ctx.lineWidth = 4;
            ctx.beginPath();
            ctx.moveTo(0, canvas.height - 30);
            ctx.lineTo(canvas.width, canvas.height - 30);
            ctx.stroke();


            this.pipes.forEach(pipe => pipe.draw());
            this.bird.draw();
        }

        endGame() {
            this.isRunning = false;

            // Update High Score
            if (this.score > highscore) {
                highscore = this.score;
                localStorage.setItem('flappyHighScore', highscore);
            }

            // Display Game Over message
            messageTitle.textContent = "Game Over!";
            messageBody.innerHTML = `Your Score: ${this.score}<br>High Score: ${highscore}`;
            startButton.classList.add('hidden');
            restartButton.classList.remove('hidden');
            messageBox.classList.add('active');

            // Update UI
            scoreDisplay.textContent = `Score: ${this.score}`;
            highScoreText.textContent = `High Score: ${highscore}`;
        }
    }

    // --- GAME LOOP AND INITIALIZATION ---
    let lastTime = 0;

    function gameLoop(time) {
        if (!game || !game.isRunning) {
            // If the game is not running, stop the loop and wait for start
            drawStartScreen();
            return;
        }

        const deltaTime = time - lastTime;
        lastTime = time;

        game.update(time);
        game.draw();

        // Use requestAnimationFrame to loop
        requestAnimationFrame(gameLoop);
    }

    function drawStartScreen() {
        // Clear canvas
        ctx.clearRect(0, 0, canvas.width, canvas.height);

        // Draw ground
        ctx.fillStyle = '#4ade80';
        ctx.fillRect(0, canvas.height - 30, canvas.width, 30);
        ctx.strokeStyle = '#16a34a';
        ctx.lineWidth = 4;
        ctx.beginPath();
        ctx.moveTo(0, canvas.height - 30);
        ctx.lineTo(canvas.width, canvas.height - 30);
        ctx.stroke();

        // Draw a static bird in the middle
        const tempBird = new Bird(canvas.width / 4, canvas.height / 2, 20);
        tempBird.draw();

        // Update high score display
        highScoreText.textContent = `High Score: ${highscore}`;
    }

    // --- EVENT LISTENERS ---

    // Jump handler
    function handleJump() {
        if (game && game.isRunning) {
            game.bird.jump();
        }
    }

    // Click/Touch input
    canvas.addEventListener('click', handleJump);
    canvas.addEventListener('touchstart', (e) => {
        e.preventDefault(); // Prevent scrolling on touch
        handleJump();
    });

    // Keyboard input (Spacebar)
    document.addEventListener('keydown', (e) => {
        if (e.code === 'Space' || e.key === ' ') {
            e.preventDefault();
            handleJump();
        }

        // Handle restart/start on spacebar
        if (!game || !game.isRunning) {
            if (e.code === 'Space' || e.key === ' ') {
                startGame();
            }
        }
    });

    // Start/Restart button handlers
    startButton.addEventListener('click', startGame);
    restartButton.addEventListener('click', startGame);

    function startGame() {
        if (!game) {
            game = new FlappyGame();
        }
        game.reset();
        lastTime = performance.now();
        requestAnimationFrame(gameLoop);
    }

    // Initialize the game state when the page loads
    window.onload = () => {
        resizeCanvas();
        game = new FlappyGame();
        drawStartScreen();
        // Show the initial start message
        messageBox.classList.add('active');
        startButton.classList.remove('hidden');
        restartButton.classList.add('hidden');
    };

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