let walkers = [];

​

function setup() {

  createCanvas(400, 400);

  background(220);

  for (let i=0; i < numWalkers; i++){

    walkers[i] = new Walker(random(width), random(height));

  }

}

​

function draw() {

  for(let i = 0; i < walkers.length; i++){

    walkers[i].update();

    walkers[i].display();

  }

}

​

class Walker {

​

  constructor(x, y) {

    this.posX = x;

    this.posY = y;

    this.size = random(8,32);

    this.color = color(random(255), random(255), random(255));

  }

  //updates the varaibles of wallker

  update() {

    this.posX += random(-2, 2);

    this.posY += random(-2, 2);

  }

  //display the elements of walker 

  display() {

    fill(this.color);

    ellipse(this.posX, this.posY, this.size, this.size);

  }

}