let offset = 40;

let desired=null;

​

function setup() {

  createCanvas(640, 240);

  vehicle = new Vehicle(width / 2, height / 2);

}

​

function draw() {

  background(255);

    stroke(0);

    noFill();

    rectMode(CENTER);

    rect(width / 2, height / 2, width - offset * 2, height - offset * 2);

  if (this.position.x <offset) {

    desired = createVector (this.maxspeed, this.velocity.y);

  } else if (this.position.y > width -offset) {

    desired = createVector (-this.maxspeed, this.velocity.y);

  } 

  if (this.position.y < offset){

    desired = createVector (this.velocity.x, this.maxspeed);

  } else if (this.position.y > height - offset) {

    desired = createVector (this.velocity.x,-this.maxspeed);

  }

​

  // Call the appropriate steering behaviors for our agents

  vehicle.boundaries(offset);

  vehicle.update();

  vehicle.show();

​

}

​

​

​