"focused" boolean - OpenProcessing

mySketch
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let needsScreenWipe = false;
​
function setup() {
  createCanvas(windowWidth, windowHeight);
}
​
function draw() {
  if (!focused) {
    drawComeBackMessage();
    needsScreenWipe = true;
  } else {
    if (needsScreenWipe) {
      background("pink");
      needsScreenWipe = false;
    }
    drawDroplets();
    drawBoxes();
  }
}
​
function drawComeBackMessage() {
  background(0)
  textAlign(CENTER, CENTER)
  textSize(width / 10)
  fill('red')
  text(`Come back!`, width / 2, height / 2)
​
}
​
function drawDroplets() {
  noStroke();
  fill(255)
  circle(random(0, width), random(0, height), random(0, 20))
}
​
function drawBoxes() {
  if (mouseIsPressed === true) {
    needsScreenWipe = true;
    fill('blue')
    square(random(0, width), random(0, height), random(0, 20))
  } else {
    fill('lime')
    rect(random(0, width), random(0, height), 30, random(0, 20))
  }
}