let y;

let xspeed;

let yspeed;

let dvd;

​

function preload() {

  dvd = loadImage("dvd_logo.png");

}

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  x = random(width);

  y = random(height);

  xspeed = 3;

  yspeed = 3;

}

​

function draw() {

  background(0);

  image(dvd, x, y);

  x = x + xspeed;

  y = y + yspeed;

  if (x + dvd.width >= width) {

    xspeed = -xspeed;

    x = width - dvd.width;

  } else if (x <= 0) {

    xspeed = -xspeed;

    x = 0;

  }

    if (y + dvd.height >= height) {

    yspeed = -yspeed;

    y = height - dvd.height;

  } else if (y <= 0) {

    yspeed = -yspeed;

    y = 0;

  }

}

​