using System;
using System.Diagnostics;


namespace SpaceInvaders
{
    public class ShipMoveObserver : CollisionObserver
    {
        //-------------------------------------------------------------------
        //  CONSTRUCTION
        //-------------------------------------------------------------------

        public ShipMoveObserver() : base()
        {  }


        //-------------------------------------------------------------------
        //  PUBLIC METHODS
        //-------------------------------------------------------------------

        public override void Notify()
        {
            //grab current ship & bumper
            Ship pShip = ShipMan.GetShip();
            Bumpers pBumper = (Bumpers)this.pSubject.pObjB;

            //ship collide w/ left bumper
            if(pBumper.GetBumperType() == Bumpers.BumperType.LeftBumper)
            {
                pShip.SetMoveState(ShipMan.MoveState.MoveRight);
            }
            
            //ship collide w/ right bumper
            if(pBumper.GetBumperType() == Bumpers.BumperType.RightBumper)
            {
                pShip.SetMoveState(ShipMan.MoveState.MoveLeft);
            }
        }


    } // end class

} // end namespace