​

function setup() {

  createCanvas(600, 400);

}

​

function mousePressed() {

  size = 20

  let b = new Ball(mouseX, mouseY)

  balls.push(b);

}

​

function draw() {

  background(0);

  for (let i = 0; i < balls.length; i++) {

    balls[i].display();

  }

}

​