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particle
Developer User20334｜Date and time 24/2/26 22:34:53
Build time 6.155 sec｜Game capacity 1.082KB｜

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[PR]現在の売れ筋ゲームアプリランキング

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

<!DOCTYPE html>
<html>
<head>
  <title>Particle Game</title>
</head>
<body>
  <canvas id="gameCanvas" width="400" height="400"></canvas>
  <script>
    const canvas = document.getElementById('gameCanvas');
    const ctx = canvas.getContext('2d');

let particle = {
      x: 200,
      y: 200,
      size: 10,
      color: 'red',
      speedX: 2,
      speedY: 1
    };

function drawParticle() {
      ctx.beginPath();
      ctx.arc(particle.x, particle.y, particle.size, 0, Math.PI * 2);
      ctx.fillStyle = particle.color;
      ctx.fill();
    }

function update() {
      particle.x += particle.speedX;
      particle.y += particle.speedY;

if (particle.x - particle.size < 0 || particle.x + particle.size > canvas.width) {
        particle.speedX *= -1;
      }

if (particle.y - particle.size < 0 || particle.y + particle.size > canvas.height) {
        particle.speedY *= -1;
      }

ctx.clearRect(0, 0, canvas.width, canvas.height);
      drawParticle();

requestAnimationFrame(update);
    }

update();
  </script>
</body>
</html>