createCanvas(400, 400);

}

​

let smiley_x = 100;

let smiley_speed = 1;

​

function draw() {

  background(220, 220, 255);

  noStroke();

  fill(255, 255, 0)

  ellipse(smiley_x, 200, 80, 80);

  fill(0, 0, 0);

  ellipse(smiley_x - 20, 200, 10, 10);

  fill(0, 0, 0);

  ellipse(smiley_x + 20, 200, 10, 10);

  fill(0, 0, 0);

  rect(smiley_x - 10, 210, 20, 5)

  if (smiley_x > 400 || smiley_x <= 0) {

    smiley_speed = smiley_speed * -1;

  }

  smiley_x = smiley_x + smiley_speed;

}