let bubble;

​

function setup() {

  createCanvas(400, 400);

}

​

function mouseDragged() {

  let x = mouseX;

  let y = mouseY;

  let r = 40;

  let b = new Bubble(x, y, r);

  bubbles.push(b);

}

​

function draw() {

  background(0);

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

    if (bubbles[i].contains(mouseX, mouseY)) {

      bubbles[i].changeColor(255);

    } else {

      bubbles[i].changeColor(0);

    }

    bubbles[i].move();

    bubbles[i].displayCircle();

  }

  if (bubbles.length > 10) {

    bubbles.splice(0,1);

  }

}

​