this.pos = createVector(random(width),random(height));

  this.target = createVector(x,y);

  this.vel = p5.Vector.random2D();

  this.acc = createVector();

  this.r = 8;

  this.maxspeed = 10;

  this.maxforce = 1;

}

​

Vehicle.prototype.behaviors = function(){

  var arrive = this.arrive(this.target);

  var mouse = createVector(mouseX,mouseY);

  var flee = this.flee(mouse);

  arrive.mult(1);

  flee.mult(5);

  this.applyForce(flee);

  this.applyForce(arrive);

}

​

Vehicle.prototype.applyForce = function(f){

 this.acc.add(f);

}

​

Vehicle.prototype.update = function(){

  this.pos.add(this.vel);

  this.vel.add(this.acc);

  this.acc.mult(0);

}

​

Vehicle.prototype.show = function(){

  stroke(255);

  strokeWeight(8);

  point(this.pos.x,this.pos.y);

}

​

Vehicle.prototype.arrive = function(target){

  var desired = p5.Vector.sub(target,this.pos);

  var d = desired.mag();

  var speed = this.maxspeed;

  if (d < 100){

   speed = map (d,0,100,0,this.maxspeed);

  }

  desired.setMag(speed);

  var steer = p5.Vector.sub(desired,this.vel);

  steer.limit(this.maxforce);

  return steer;

}

​

Vehicle.prototype.flee= function(target){

  var desired = p5.Vector.sub(target,this.pos);

  var d = desired.mag();

  if(d < 50){

  desired.setMag(this.maxspeed);

  desired.mult(-1);

  var steer = p5.Vector.sub(desired,this.vel);

  steer.limit(this.maxforce);

  return steer;

  }else{

    return createVector(0,0);

  }

}