constructor(x, y, pr) {

    this.x = x;

    this.y = y;

    this.n = 4; 

    this.pack = [];

    this.num = 50;

    this.pr = pr;

    this.m = 0;

    for (let i=0; i<this.n; i++) {

      this.pack[i] = new Circle(colors[i%3], i*50, this.pr+i*5, i+1, this.num/(i+1), this.num);

    }

  }

  display() {

    for (let i=0; i<this.n; i++) {

      push();

      translate(this.x, this.y);

      this.move();

      this.pack[i].display(this.m);

      pop();

    }

  }

  move() {

    let distance = dist(mouseX, mouseY, this.x, this.y);

    if (distance < 50) {

      this.m = floor(distance/10) + 1;

    } else {

      this.m = 0;

    }

  }

}