let xSpeed, ySpeed;

let r, g, b;

​

​

function setup() {

  createCanvas(400, 400);

  background(220);

  x = width/2

  y = height/2

}

​

function draw() {

  xSpeed = random(-5, 5);

  ySpeed = random(-5, 5);

  //update position

  x = x + xSpeed;

  y = y + ySpeed;

  // display circle

  fill(random(255), random(255), random(255))

  circle(x, y, 50)

}