AI game creator

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No:8850

4034

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Old particles
Developer User3589｜Date and time 23/7/19 0:34:15
Build time 17.577 sec｜Game capacity 1.725KB｜

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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>
<head>
<style>
  canvas {
    border: 1px solid #000;
  }
</style>
</head>
<body>
<canvas id="game" width="400" height="400"></canvas>

class Particle {
    constructor(x, y, radius, color, dx, dy) {
      this.x = x;
      this.y = y;
      this.radius = radius;
      this.color = color;
      this.dx = dx;
      this.dy = dy;
    }

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

update() {
      this.x += this.dx;
      this.y += this.dy;

if (this.x + this.radius > canvas.width || this.x - this.radius < 0) {
        this.dx = -this.dx;
      }

if (this.y + this.radius > canvas.height || this.y - this.radius < 0) {
        this.dy = -this.dy;
      }

this.draw();
    }
  }

function animate() {
    requestAnimationFrame(animate);
    
    ctx.clearRect(0, 0, canvas.width, canvas.height);
    
    for (let i = 0; i < particles.length; i++) {
      particles[i].update();
    }
  }

init();
  animate();
</script>
</body>
</html>