let ball2;

​

function setup() {

  createCanvas(600, 400);

  ball1=new Ball(50,100,4,-5);

  ball2=new Ball(100,200,-5,8);

}

​

function draw() {

  background(0);

  ball1.move();

  ball1.display();

  ball1.bounce();

  ball2.move();

  ball2.display();

  ball2.bounce();

}

​

​