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particle
Developer User21222｜Date and time 24/3/7 14:33:51
Build time 8.287 sec｜Game capacity 1.94KB｜

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<!DOCTYPE html>
<html>
<head>
  <title>Particle Game</title>
  <style>
    canvas {
      border: 1px solid black;
    }
  </style>
</head>
<body>
  <canvas id="gameCanvas" width="400" height="400"></canvas>
  <script>
    const canvas = document.getElementById('gameCanvas');
    const ctx = canvas.getContext('2d');
    
    let particles = [];
    
    class Particle {
      constructor(x, y, color) {
        this.x = x;
        this.y = y;
        this.color = color;
        this.radius = 5;
        this.dx = Math.random() * 2 - 1;
        this.dy = Math.random() * 2 - 1;
      }
      
      update() {
        this.x += this.dx;
        this.y += this.dy;
        
        if (this.x + this.radius > canvas.width || this.x - this.radius < 0) {
          this.dx *= -1;
        }
        if (this.y + this.radius > canvas.height || this.y - this.radius < 0) {
          this.dy *= -1;
        }
      }
      
      draw() {
        ctx.beginPath();
        ctx.arc(this.x, this.y, this.radius, 0, Math.PI * 2);
        ctx.fillStyle = this.color;
        ctx.fill();
        ctx.closePath();
      }
    }
    
    function createParticles() {
      for (let i = 0; i < 10; i++) {
        const x = Math.random() * canvas.width;
        const y = Math.random() * canvas.height;
        const color = `rgb(${Math.random() * 255}, ${Math.random() * 255}, ${Math.random() * 255})`;
        particles.push(new Particle(x, y, color));
      }
    }
    
    function updateParticles() {
      particles.forEach(particle => {
        particle.update();
      });
    }
    
    function drawParticles() {
      ctx.clearRect(0, 0, canvas.width, canvas.height);
      particles.forEach(particle => {
        particle.draw();
      });
    }
    
    function gameLoop() {
      updateParticles();
      drawParticles();
      requestAnimationFrame(gameLoop);
    }
    
    createParticles();
    gameLoop();
  </script>
</body>
</html>