const ballB = [100, 150];

const size = 20;

const differentMovements = [1, 60, 120, 300, 30, 40, 50, 25, 35];

​

const speed = [1, 7, 5, 4, 9, 12, 11, 8, 2];

​

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  const r = Math.floor( random() * differentMovements.length);

  const r2 = Math.floor( random() * differentMovements.length);

  background(255);

​

  fill(255, 0, 0);

  ellipse(ballA[0], ballA[1], size, size);

​

  fill(0, 255, 0);

  ellipse(ballB[0], ballB[1], size, size);

​

  if (frameCount % differentMovements[r] === 0) {

    ballA[0] += speed[r];

  }

​

  if (frameCount % differentMovements[r2] === 0) {

    ballB[0] += speed[r2];

  }

​

}