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particle
Developer User9173｜Date and time 23/10/11 9:51:44
Build time 69.591 sec｜Game capacity 1.676KB｜

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<!DOCTYPE html>
<html>
<head>
  <title>Particle Game</title>
  <style>
    body {
      margin: 0;
      padding: 0;
      overflow: hidden;
      background-color: black;
    }
  </style>
</head>
<body>
  <canvas id="gameCanvas"></canvas>

// Particle class
    class Particle {
      constructor(x, y, radius, color) {
        this.x = x;
        this.y = y;
        this.radius = radius;
        this.color = color;
        this.velocity = {
          x: (Math.random() - 0.5) * 8,
          y: (Math.random() - 0.5) * 8
        };
      }

draw() {
        ctx.beginPath();
        ctx.arc(this.x, this.y, this.radius, 0, Math.PI * 2, false);
        ctx.fillStyle = this.color;
        ctx.fill();
      }

update() {
        this.draw();
        this.x += this.velocity.x;
        this.y += this.velocity.y;
      }
    }

// Game loop
    function gameLoop() {
      requestAnimationFrame(gameLoop);
      ctx.clearRect(0, 0, canvas.width, canvas.height);

// Create particles on touch/click
      canvas.addEventListener("touchstart", function(event) {
        const touchX = event.touches[0].clientX;
        const touchY = event.touches[0].clientY;
        const particle = new Particle(touchX, touchY, 20, "white");
        particle.draw();
      });

particles.forEach(particle => {
        particle.update();
      });
    }

// Start the game
    const particles = [];
    gameLoop();
  </script>
</body>
</html>