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360x360

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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=1.0, maximum-scale=1.0, user-scalable=no">
    <style>
        /* FIX LAG: Sử dụng GPU để render giao diện */
        body { 
            background: #000; margin: 0; overflow: hidden; 
            touch-action: none; -webkit-font-smoothing: antialiased;
        }
        #ui { position: absolute; width: 100%; text-align: center; color: #0f0; font: 20px Arial; top: 10px; pointer-events: none; }
        canvas { 
            display: block; margin: 20px auto; background: #000; 
            box-shadow: 0 0 10px #222; transform: translateZ(0); /* Kích hoạt tăng tốc phần cứng */
        }
        .ctrls { display: grid; grid-template-areas: ". u ." "l d r"; gap: 10px; justify-content: center; margin-top: 5px; }
        .b { 
            width: 65px; height: 65px; background: rgba(50,50,50,0.8); 
            border-radius: 15px; display: flex; justify-content: center; 
            align-items: center; color: #fff; font-size: 24px;
            -webkit-tap-highlight-color: transparent; /* Xóa khung xanh khi bấm trên iPhone */
        }
    </style>
</head>
<body>
    <div id="ui">SCORE: <span id="s">0</span></div>
    <canvas id="g"></canvas>
    <div class="ctrls">
        <div class="b" style="grid-area:u" ontouchstart="move('U')">▲</div>
        <div class="b" style="grid-area:l" ontouchstart="move('L')">◀</div>
        <div class="b" style="grid-area:d" ontouchstart="move('D')">▼</div>
        <div class="b" style="grid-area:r" ontouchstart="move('R')">▶</div>
    </div>

<script>
    const cvs = document.getElementById("g"), ctx = cvs.getContext("2d", { alpha: false }); // Tăng tốc bằng cách tắt alpha channel
    const scoreEl = document.getElementById("s");
    const size = 20;
    let snk = [{x:10, y:10}], fd = {x:5, y:5}, dr = "R", nxt = "R", sc = 0, lastT = 0;

    // Tự động chỉnh kích thước canvas mượt hơn
    cvs.width = 360; cvs.height = 360;
    const tile = cvs.width / size;

    function move(d) {
        if(d=="L" && dr!="R") nxt="L"; if(d=="U" && dr!="D") nxt="U";
        if(d=="R" && dr!="L") nxt="R"; if(d=="D" && dr!="U") nxt="D";
    }

    // FIX LAG: Sử dụng requestAnimationFrame thay vì setInterval
    function loop(t) {
        requestAnimationFrame(loop);
        if (t - lastT < 120) return; // Khóa FPS ở mức ổn định (~8 FPS cho rắn)
        lastT = t;

        dr = nxt;
        let h = {...snk[0]};
        if(dr=="L") h.x--; if(dr=="U") h.y--; if(dr=="R") h.x++; if(dr=="D") h.y++;

        // Xuyên tường
        if(h.x<0) h.x=size-1; if(h.x>=size) h.x=0;
        if(h.y<0) h.y=size-1; if(h.y>=size) h.y=0;

        if(snk.some((p,i)=>i!==0 && p.x==h.x && p.y==h.y)) return location.reload();

        snk.unshift(h);
        if(h.x==fd.x && h.y==fd.y) {
            sc += 10; scoreEl.innerText = sc;
            fd = {x:Math.floor(Math.random()*size), y:Math.floor(Math.random()*size)};
        } else snk.pop();

        render();
    }

    function render() {
        ctx.fillStyle = "#000"; ctx.fillRect(0,0,cvs.width,cvs.height);
        ctx.fillStyle = "#f00"; ctx.beginPath(); ctx.arc(fd.x*tile+tile/2, fd.y*tile+tile/2, tile/2-2, 0, 7); ctx.fill();
        ctx.fillStyle = "#0f0";
        snk.forEach(p => ctx.fillRect(p.x*tile+1, p.y*tile+1, tile-2, tile-2));
    }

    requestAnimationFrame(loop);
</script>
</body>
</html>

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Network Timeline

Performance Summary

Requests

Domains

4KB

Transfer Size

4KB

Content Size

202.0ms

Dom Content Loaded

596.0ms

First Paint

204.0ms

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Header Size (bytes)

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Timings (ms)

Total Time

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