// Chapter 1 : Vectors

​

let walkers = [];

let speed = 2;

​

function setup() {

  createCanvas(400, 400);

  for (let i = 0; i < 10; i++) {

    walkers[i] = new Walker(random(40, width - 40), random(40, height - 40));

  }

}

​

function mouseReleased() {

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

    walkers[i].vel.setMag(speed);

  }

}

​

function draw() {

  background(0);

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

    walkers[i].update();

    walkers[i].show();

    walkers[i].edges();

  }

}