Windmill 3d! Rotating motion!'s game

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No:8896

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Windmill 3d! Rotating motion!
Developer User3589｜Date and time 23/7/19 10:52:56
Build time 20.04 sec｜Game capacity 3.154KB｜

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Click here for free DL of the app version that can save data.

<!DOCTYPE html>
<html lang="ja">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>風車3D回転モーション</title>
  <style>
    body {
      margin: 0;
      padding: 0;
      display: flex;
      justify-content: center;
      align-items: center;
      height: 100vh;
      overflow: hidden;
      background-color: #F3F3F3;
    }

#container {
      width: 200px;
      height: 200px;
      position: relative;
      perspective: 1200px;
    }

#wheel {
      width: 100%;
      height: 100%;
      position: absolute;
      transform-style: preserve-3d;
      animation: spin 5s infinite linear;
    }

.blade {
      position: absolute;
      width: 2px;
      height: 100%;
      left: calc(50% - 1px);
      background-color: #333;
      transform-origin: 50% 50%;
    }

.blade:nth-child(1) {
      transform: rotateX(45deg);
    }

.blade:nth-child(2) {
      transform: rotateX(135deg);
    }

.blade:nth-child(3) {
      transform: rotateX(225deg);
    }

.blade:nth-child(4) {
      transform: rotateX(315deg);
    }

@keyframes spin {
      from {
        transform: rotateY(0deg);
      }
      to {
        transform: rotateY(1turn);
      }
    }

.ball {
      position: absolute;
      top: 0;
      left: calc(50% - 5px);
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background-color: red;
      animation: fall 5s linear infinite;
    }

@keyframes fall {
      0% {
        transform: translateY(0);
      }
      100% {
        transform: translateY(100vh);
      }
    }
  </style>
</head>
<body>
  <div id="container">
    <div id="wheel">
      <div class="blade"></div>
      <div class="blade"></div>
      <div class="blade"></div>
      <div class="blade"></div>
    </div>
    <div class="ball"></div>
  </div>

wheel.addEventListener("click", () => {
      if (isPaused) {
        wheel.style.animationPlayState = "running";
        isPaused = false;
      } else {
        wheel.style.animationPlayState = "paused";
        isPaused = true;
      }
    });

setInterval(() => {
      balls.forEach((ball) => {
        const ballTop = ball.offsetTop;
        const ballBottom = ball.offsetTop + ball.offsetHeight;
        const bladeTop = wheel.offsetTop;
        const bladeBottom = wheel.offsetTop + wheel.offsetHeight;

if (
          (ballTop >= bladeTop && ballTop <= bladeBottom) ||
          (ballBottom >= bladeTop && ballBottom <= bladeBottom)
        ) {
          const currentDirection = getComputedStyle(ball).animationDirection;
          if (currentDirection === "normal") {
            ball.style.animationDirection = "reverse";
          } else {
            ball.style.animationDirection = "normal";
          }
        }
      });
    }, 100);
  </script>
</body>
</html>