test/breakout.html at main · nukelon/test · GitHub

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no"/>
<title>打砖块 - 单文件</title>
<style>
  :root { color-scheme: light dark; }
  html, body {
    height: 100%;
    margin: 0;
    background: radial-gradient(1200px 800px at 50% 20%, rgba(0,0,0,0.08), transparent) ,
                linear-gradient(180deg, #0e1116, #1b2130);
    font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    color: #eee;
    display: grid;
    place-items: center;
  }
  #wrap {
    width: min(92vw, 560px);
    aspect-ratio: 3/4;              /* 让画布自适应，避免被拉伸 */
    position: relative;
  }
  canvas {
    width: 100%;
    height: 100%;
    display: block;
    background: #0d0f14;
    border-radius: 12px;
    box-shadow: 0 18px 60px rgba(0,0,0,.4), inset 0 0 0 1px rgba(255,255,255,.06);
  }
  .hud {
    position: absolute; inset: 10px 12px auto 12px;
    display: flex; justify-content: space-between; align-items: center;
    pointer-events: none; font-weight: 600; letter-spacing: .3px;
    text-shadow: 0 1px 0 rgba(0,0,0,.5);
  }
  .hud .btns { pointer-events: auto; display: flex; gap: 8px; }
  .hud button {
    appearance: none; border: none; border-radius: 8px; padding: 6px 10px;
    background: rgba(255,255,255,.08); color: #fff; font-weight: 600; cursor: pointer;
    transition: transform .06s ease, background .2s ease;
  }
  .hud button:active { transform: translateY(1px) scale(.98); }
  .tips {
    position: absolute; inset: auto 0 8px 0; text-align: center; font-size: 12px; opacity: .7;
    user-select: none;
  }
</style>
</head>
<body>
  <div id="wrap" aria-label="打砖块游戏容器">
    <canvas id="game" aria-label="游戏画布" role="img"></canvas>
    <div class="hud">
      <div id="info">分数: 0　关卡: 1　生命: 3　最佳: 0</div>
      <div class="btns">
        <button id="btnPause" title="暂停(P)">暂停</button>
        <button id="btnReset" title="重开(R)">重开</button>
      </div>
    </div>
    <div class="tips">键盘 ←/→ 或 A/D 移动挡板 · 鼠标/触摸可拖动 · P 暂停 · R 重开</div>
  </div>

<script>
(() => {
  const canvas = document.getElementById('game');
  const infoEl = document.getElementById('info');
  const btnPause = document.getElementById('btnPause');
  const btnReset = document.getElementById('btnReset');
  const ctx = canvas.getContext('2d');

  // ====== 设备像素比处理，保持高清 ======
  function fitCanvas() {
    const dpr = Math.max(1, Math.min(window.devicePixelRatio || 1, 2));
    const rect = canvas.getBoundingClientRect();
    canvas.width = Math.round(rect.width * dpr);
    canvas.height = Math.round(rect.height * dpr);
    ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
  }

  // ====== 游戏状态 ======
  const state = {
    running: true,
    level: 1,
    score: 0,
    lives: 3,
    best: Number(localStorage.getItem('breakout_best') || 0),
  };

  // ====== 对象定义 ======
  const paddle = { x: 0, y: 0, w: 96, h: 12, speed: 480, targetX: null };
  const ball = { x: 0, y: 0, r: 7, dx: 0, dy: 0, speed: 320, launched: false };
  const bricks = {
    rows: 6,
    cols: 8,
    marginTop: 64,
    marginSide: 18,
    padding: 8,
    w: 0,
    h: 20,
    list: []
  };

  function resetLevel(firstTime = false) {
    const W = canvas.clientWidth, H = canvas.clientHeight;
    // 随关卡变化
    bricks.rows = Math.min(3 + state.level, 12);
    bricks.cols = Math.min(6 + Math.floor(state.level/2), 12);
    paddle.w = Math.max(56, 110 - state.level * 6);
    ball.speed = Math.min(650, 320 + state.level * 30);
    bricks.h = Math.max(16, 22 - Math.floor(state.level/3));
    bricks.marginTop = 56;

    // 计算砖块尺寸
    const usableW = W - bricks.marginSide * 2;
    bricks.w = (usableW - (bricks.cols - 1) * bricks.padding) / bricks.cols;

    // 创建砖块
    bricks.list = [];
    for (let r = 0; r < bricks.rows; r++) {
      for (let c = 0; c < bricks.cols; c++) {
        const x = bricks.marginSide + c * (bricks.w + bricks.padding);
        const y = bricks.marginTop + r * (bricks.h + bricks.padding);
        const hp = 1 + Math.floor((r + state.level) / 5); // 偶尔两层血
        bricks.list.push({ x, y, w: bricks.w, h: bricks.h, hp });
      }
    }

    // 放置挡板与球
    paddle.x = (W - paddle.w) / 2;
    paddle.y = H - 48;
    ball.x = W / 2;
    ball.y = H - 60 - ball.r;
    ball.launched = false;
    const angle = randBetween(35, 145) * Math.PI / 180;
    ball.dx = Math.cos(angle);
    ball.dy = -Math.abs(Math.sin(angle));

    if (firstTime) {
      state.score = 0;
      state.lives = 3;
      state.level = 1;
    }
  }

  function allBricksCleared() {
    return bricks.list.every(b => b.hp <= 0);
  }

  // ====== 输入控制 ======
  const keys = new Set();
  window.addEventListener('keydown', (e) => {
    if (['ArrowLeft','ArrowRight','a','d','A','D','p','P','r','R',' '].includes(e.key)) e.preventDefault();
    if (e.key === 'p' || e.key === 'P') { togglePause(); return; }
    if (e.key === 'r' || e.key === 'R') { hardReset(); return; }
    if (e.key === ' ') { ball.launched = true; return; }
    keys.add(e.key);
  });
  window.addEventListener('keyup', (e) => keys.delete(e.key));

  // 鼠标/触控移动挡板
  function movePaddleTo(clientX) {
    const rect = canvas.getBoundingClientRect();
    paddle.targetX = Math.min(Math.max(clientX - rect.left - paddle.w/2, 0), rect.width - paddle.w);
  }
  canvas.addEventListener('mousemove', (e) => movePaddleTo(e.clientX));
  canvas.addEventListener('touchstart', (e) => { ball.launched = true; movePaddleTo(e.touches[0].clientX); }, {passive:false});
  canvas.addEventListener('touchmove', (e) => { movePaddleTo(e.touches[0].clientX); e.preventDefault(); }, {passive:false});
  canvas.addEventListener('click', () => { if (!state.running) togglePause(); else ball.launched = true; });

  btnPause.addEventListener('click', togglePause);
  btnReset.addEventListener('click', hardReset);

  function togglePause() {
    state.running = !state.running;
    btnPause.textContent = state.running ? '暂停' : '继续';
  }

  function hardReset() {
    state.running = true;
    state.level = 1; state.score = 0; state.lives = 3;
    btnPause.textContent = '暂停';
    resetLevel();
  }

  // ====== 工具函数 ======
  function randBetween(min, max) { return Math.random() * (max - min) + min; }
  function clamp(v, lo, hi) { return Math.min(Math.max(v, lo), hi); }

  // ====== 渲染 ======
  function drawBackground() {
    const W = canvas.clientWidth, H = canvas.clientHeight;
    // 顶部渐变光
    const g = ctx.createLinearGradient(0, 0, 0, H);
    g.addColorStop(0, 'rgba(0,180,255,0.08)');
    g.addColorStop(1, 'rgba(0,0,0,0)');
    ctx.fillStyle = g;
    ctx.fillRect(0, 0, W, H);
  }

  function drawPaddle() {
    ctx.fillStyle = '#8bd3dd';
    roundRect(ctx, paddle.x, paddle.y, paddle.w, paddle.h, 6, true);
  }

  function drawBall() {
    const g = ctx.createRadialGradient(ball.x-2, ball.y-2, 1, ball.x, ball.y, ball.r);
    g.addColorStop(0, '#fff');
    g.addColorStop(1, '#80b3ff');
    ctx.fillStyle = g;
    ctx.beginPath();
    ctx.arc(ball.x, ball.y, ball.r, 0, Math.PI*2);
    ctx.fill();
  }

  function drawBricks() {
    bricks.list.forEach((b, i) => {
      if (b.hp <= 0) return;
      const hue = (i * 17 + state.level * 23) % 360;
      ctx.fillStyle = `hsl(${hue} 70% ${b.hp > 1 ? 48 : 58}% / 0.95)`;
      roundRect(ctx, b.x, b.y, b.w, b.h, 5, true);
    });
  }

  function drawOverlay(text, sub) {
    const W = canvas.clientWidth, H = canvas.clientHeight;
    ctx.fillStyle = 'rgba(0,0,0,.35)';
    ctx.fillRect(0, 0, W, H);
    ctx.fillStyle = '#fff';
    ctx.font = '600 24px system-ui, sans-serif';
    ctx.textAlign = 'center';
    ctx.fillText(text, W/2, H/2 - 8);
    ctx.font = '14px system-ui, sans-serif';
    ctx.fillStyle = 'rgba(255,255,255,.9)';
    ctx.fillText(sub, W/2, H/2 + 20);
  }

  function roundRect(ctx, x, y, w, h, r, fill) {
    const rr = Math.min(r, w/2, h/2);
    ctx.beginPath();
    ctx.moveTo(x+rr, y);
    ctx.arcTo(x+w, y, x+w, y+h, rr);
    ctx.arcTo(x+w, y+h, x, y+h, rr);
    ctx.arcTo(x, y+h, x, y, rr);
    ctx.arcTo(x, y, x+w, y, rr);
    ctx.closePath();
    if (fill) ctx.fill();
  }

  // ====== 逻辑更新 ======
  let lastTime = 0;
  function update(dt) {
    const W = canvas.clientWidth, H = canvas.clientHeight;

    // 键盘控制
    let vx = 0;
    if (keys.has('ArrowLeft') || keys.has('a') || keys.has('A')) vx -= 1;
    if (keys.has('ArrowRight') || keys.has('d') || keys.has('D')) vx += 1;
    if (paddle.targetX != null) {
      // 平滑跟随鼠标/触控
      const desired = paddle.targetX;
      const diff = desired - paddle.x;
      paddle.x += clamp(diff, -paddle.speed*dt, paddle.speed*dt);
      if (Math.abs(diff) < 0.5) paddle.targetX = null;
    }
    if (vx !== 0) {
      paddle.x += vx * paddle.speed * dt;
      paddle.targetX = null; // 键盘输入时忽略鼠标锁定
    }
    paddle.x = clamp(paddle.x, 0, W - paddle.w);

    // 球发射前跟随挡板
    if (!ball.launched) {
      ball.x = clamp(paddle.x + paddle.w/2, ball.r, W - ball.r);
      return;
    }

    // 球运动
    const v = ball.speed;
    ball.x += ball.dx * v * dt;
    ball.y += ball.dy * v * dt;

    // 撞墙
    if (ball.x < ball.r) { ball.x = ball.r; ball.dx *= -1; }
    if (ball.x > W - ball.r) { ball.x = W - ball.r; ball.dx *= -1; }
    if (ball.y < ball.r) { ball.y = ball.r; ball.dy *= -1; }

    // 掉落
    if (ball.y > H + ball.r) {
      state.lives -= 1;
      if (state.lives <= 0) {
        state.best = Math.max(state.best, state.score);
        localStorage.setItem('breakout_best', state.best);
        state.running = false;
      } else {
        // 复位当前球
        ball.launched = false;
        ball.y = H - 60 - ball.r;
      }
    }

    // 挡板碰撞（圆-矩形）
    if (circleRectOverlap(ball, paddle)) {
      // 让反弹角度由击中位置决定，中心为 0，左负右正
      const hit = (ball.x - (paddle.x + paddle.w/2)) / (paddle.w/2);
      const maxAngle = 75 * Math.PI/180;
      const angle = hit * maxAngle;
      const speed = Math.hypot(ball.dx, ball.dy); // 单位向量
      ball.dx = Math.sin(angle);
      ball.dy = -Math.cos(angle);
      // 确保向上
      if (ball.dy > -0.2) ball.dy = -0.2;
      // 轻微提速
      ball.speed = Math.min(ball.speed * 1.01, 760);
      // 把球移出挡板以免卡住
      ball.y = paddle.y - ball.r - 0.5;
    }

    // 砖块碰撞（简化：逐个检测，命中就反弹一次）
    for (const b of bricks.list) {
      if (b.hp <= 0) continue;
      if (circleRectOverlap(ball, b)) {
        b.hp -= 1;
        state.score += 10;
        // 判断撞击侧：比较与矩形中心的差值
        const cx = clamp(ball.x, b.x, b.x + b.w);
        const cy = clamp(ball.y, b.y, b.y + b.h);
        const dx = ball.x - cx;
        const dy = ball.y - cy;
        if (Math.abs(dx) > Math.abs(dy)) {
          ball.dx *= -1;
        } else {
          ball.dy *= -1;
        }
        break; // 一帧只反弹一次，避免穿透
      }
    }

    // 过关检测
    if (allBricksCleared()) {
      state.level += 1;
      // 奖励生命（每两关 +1）
      if (state.level % 2 === 0) state.lives = Math.min(5, state.lives + 1);
      resetLevel();
    }
  }

  function circleRectOverlap(c, r) {
    // 最近点法
    const nx = clamp(c.x, r.x, r.x + r.w);
    const ny = clamp(c.y, r.y, r.y + r.h);
    const dx = c.x - nx, dy = c.y - ny;
    return (dx*dx + dy*dy) <= (c.r * c.r);
  }

  // ====== 主循环 ======
  function loop(t) {
    requestAnimationFrame(loop);
    const now = t / 1000;
    const dt = Math.min(0.033, now - (lastTime || now));
    lastTime = now;

    fitCanvas();
    const W = canvas.clientWidth, H = canvas.clientHeight;

    // 渲染
    ctx.clearRect(0, 0, W, H);
    drawBackground();

    if (state.running) update(dt);

    drawBricks();
    drawPaddle();
    drawBall();

    infoEl.textContent = `分数: ${state.score}　关卡: ${state.level}　生命: ${state.lives}　最佳: ${Math.max(state.best, state.score)}`;

    if (!state.running) {
      drawOverlay('游戏结束', '点击画布或按 R 重开');
    } else if (!ball.launched) {
      drawOverlay('准备发射', '按空格 / 点击 / 触摸以发射小球');
    }
  }

  // 初始
  fitCanvas();
  resetLevel(true);
  requestAnimationFrame(loop);

  // 响应窗口尺寸变化（节流）
  let resizeTimer = null;
  window.addEventListener('resize', () => {
    clearTimeout(resizeTimer);
    resizeTimer = setTimeout(() => { fitCanvas(); resetLevel(); }, 150);
  });
})();
</script>
</body>
</html>