​

function setup() {

  createCanvas(720, 400);

  // Starts in the middle

  x = width / 2;

  y = height;

  textSize(30);

  textAlign(CENTER);

}

​

function draw() {

  background(200);

  // Draw a circle

  stroke(50);

  fill(100);

  ellipse(x, y, 24, 24);

  // Moving up at a constant speed

  y = y - 1;

  // Reset to the bottom

if (y < 0) {

    y = height;

  }

text(frameCount, (width / 2) - 50, height / 2);

​

}

​

​