y = -2;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

​

}

​

function draw() {

  let rColorR = random(0, 250);

  let rColorG = random(0, 250);

  let rColorB = random(0, 250);

  let rShape = random(5, 50);

  fill(rColorR, rColorG, rColorB);

  rect(x, y, rShape, 50);

  x = x + rShape;

  if (x > width) {

    x = -2;

    y = y + rShape;

  }

​

  if (y > height) {

    noLoop()

  }

​

}