// https://editor.p5js.org/whatmakeart/sketches/5sv6ZjTeOv

​

let m = 0;

let mDirection = 1;

​

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  background(220);

  for (let turtle = 0; turtle < 255; turtle++) {

    console.log("turtle = " + turtle);

    m = m + mDirection;

    console.log("m = " + m);

  }

  if (m > 1500 || m < 0) {

    mDirection = mDirection * -1;

  }

}