let bubble2;

​

function setup() {

  createCanvas(600, 400);

  bubble1 = new Bubble();

  bubble2 = new Bubble();

}

​

class Bubble{

  contructor(){

    this.x = 200;

    this.y = 150;

  }    

  move() {

      this.x = this.x + (random(-5), random(5));

      this.y = this.y + (random(-5), random(5));          

}

  show(){

  stroke(255);

  strokeWeight(4);

  noFill();

  ellipse(this.x, this.y, 24, 24);

  }

}

​

function draw() {

  background(0);

  bubble1.move();

  bubble1.show();

  bubble2.move();

  bubble2.show(); 

}

​

​

​