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Bouncy Numbers
Developer User21309｜Date and time 24/3/8 16:24:44
Build time 5.725 sec｜Game capacity 1.122KB｜

Script

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[PR]現在の欲しいものランキング

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

<!DOCTYPE html>
<html lang="ru">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Bouncy Numbers</title>
<style>
  body {
    font-family: Arial, sans-serif;
    text-align: center;
  }
  canvas {
    border: 1px solid black;
  }
</style>
</head>
<body>
<canvas id="canvas" width="400" height="400"></canvas>
<script>
  const canvas = document.getElementById('canvas');
  const ctx = canvas.getContext('2d');
  
  let x = canvas.width/2;
  let y = canvas.height/2;
  let dx = 2;
  let dy = 2;
  
  function drawBall() {
    ctx.beginPath();
    ctx.arc(x, y, 20, 0, Math.PI*2);
    ctx.fillStyle = 'blue';
    ctx.fill();
    ctx.closePath();
  }
  
  function updateBall() {
    ctx.clearRect(0, 0, canvas.width, canvas.height);
    drawBall();
    
    if(x + dx > canvas.width - 20 || x + dx < 20) {
      dx = -dx;
    }
    if(y + dy > canvas.height - 20 || y + dy < 20) {
      dy = -dy;
    }
    
    x += dx;
    y += dy;
  }
  
  function gameLoop() {
    updateBall();
    requestAnimationFrame(gameLoop);
  }
  
  gameLoop();
</script>
</body>
</html>