/// <summary>
 /// Creates a new instance of ConstrainToRectangleBehavior.
 /// </summary>
 /// <param name="rectangle">The rectangle within which the actor is to be trapped.</param>
 public ConstrainToRectangleBehavior(ActorManager actorManager, Rectangle rectangle,
     Physics.Enums.CollisionCategories collisionCategory)
     : base(actorManager)
 {
     this.rectangle = rectangle;
     this.collisionCategory = collisionCategory;
 }
        /// <summary>
        /// This just kills the actor if it's hit something.
        /// </summary>
        public bool CollisionHandler(Physics.Collisions.Geom geom1, Physics.Collisions.Geom geom2, Physics.Collisions.ContactList contacts)
        {
            parentActor.Kill();

            return true;
        }