createCanvas(320, 240);

  noStroke();

}

​

let xP = 20;

let xChange = 4;

​

function draw() {

    background(255, 230, 246);

    fill(0, 125, 62);

    ellipse(xP, 20, 15, 15);

    xP = xP + xChange;

    if (xP > 200) {

      xP = 20;

    }

}

​