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404x505

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Script

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<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
    <style>
        body { margin: 0; background: #000; color: #fff; text-align: center; touch-action: none; overflow: hidden; height: 100vh; display: flex; flex-direction: column; justify-content: center; }
        canvas { background: #111; border: 2px solid #444; width: 95vw; max-width: 400px; margin: 0 auto; display: block; }
        #startBtn { background: #28a745; color: #fff; border: none; padding: 20px; font-size: 20px; border-radius: 10px; margin-top: 20px; -webkit-appearance: none; }
    </style>
</head>
<body>
    <div id="score">SCORE: 0</div>
    <canvas id="g" width="400" height="500"></canvas>
    <button id="startBtn" onclick="startGame()">點擊這裡開始遊戲</button>

<script>
    const canvas = document.getElementById("g"), ctx = canvas.getContext("2d");
    let x, y, dx, dy, px, score = 0, bricks = [], alive = false;

    function startGame() {
        document.getElementById("startBtn").style.display = "none";
        x = 200; y = 400; dx = 4; dy = -4; px = 150; score = 0; alive = true;
        bricks = [];
        for(let i=0; i<4; i++) {
            for(let j=0; j<5; j++) bricks.push({x: j*80+5, y: i*30+50, v: 1});
        }
        loop();
    }

    function loop() {
        if(!alive) return;
        ctx.clearRect(0, 0, 400, 500);
        
        // 畫磚塊
        ctx.fillStyle = "orange";
        bricks.forEach(b => {
            if(b.v) {
                ctx.fillRect(b.x, b.y, 70, 20);
                if(x>b.x && x<b.x+70 && y>b.y && y<b.y+20) { dy=-dy; b.v=0; score++; document.getElementById("score").innerText="SCORE: "+score; }
            }
        });

        // 畫球與擋板
        ctx.fillStyle = "#00d2ff"; ctx.beginPath(); ctx.arc(x,y,10,0,Math.PI*2); ctx.fill();
        ctx.fillStyle = "#fff"; ctx.fillRect(px, 480, 100, 15);

        // 碰撞
        if(x<10 || x>390) dx=-dx;
        if(y<10) dy=-dy;
        if(y>470 && x>px && x<px+100) dy=-dy;
        if(y>500) { alert("Game Over"); location.reload(); }

        x+=dx; y+=dy;
        requestAnimationFrame(loop);
    }

    // 手指滑動控制
    canvas.addEventListener("touchmove", (e) => {
        let r = canvas.getBoundingClientRect();
        px = (e.touches[0].clientX - r.left) * (400/r.width) - 50;
        e.preventDefault();
    }, {passive: false});
</script>
</body>
</html>

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3KB

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3KB

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92.0ms

Dom Content Loaded

192.0ms

First Paint

92.0ms

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