​

function setup() {

  createCanvas(windowWidth, windowHeight);

  initWalkers();

}

​

function draw(){

  drawWalkers();

  moveWalkers();

}

​

function initWalkers(){

  for(let i = 0; i < 100; i++){ // loop to create 100 walkers

    let w = createVector(random(width), random(height)); // create a random vector

    walkers.push(w) // add the walker to the walkers array

  }

}

​

function drawWalkers(){

  for(let i = 0; i < 100; i++){ // loop to display the 100 walkers

    circle(walkers[i].x, walkers[i].y, 10); // display walker at index i

  }

}

​

function moveWalkers() {

  for(let i = 0; i < 100; i++){ // loop to display the 100 walkers

    walkers[i].x += random(-5,5); // update walkers[i] x position

    walkers[i].y += random(-5,5); // update walkers[i] y position

  }

}