using System;
using System.Diagnostics;


namespace SpaceInvaders
{
    public class WallGroup : Composite
    {
        //-------------------------------------------------------------------
        //  CONSTRUCTION
        //-------------------------------------------------------------------

        public WallGroup(GameObject.ObjectName name, Sprite.SpriteName spriteName, float x, float y) 
            : base(name, spriteName)
        {
            this.name = name;

            this.x = x;
            this.y = y;

            this.pColObj.pCollisionSprite.SetColor(1.0f, 1.0f, 1.0f);
        }


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

        public override void Update()
        {
            base.UpdateBoundingBox(this);
            base.Update();
        }


        //-------------------------------------------------------------------
        //  VISITOR METHODS
        //-------------------------------------------------------------------

        public override void Accept(Visitor other)
        {
            other.Visit(this);
        }

        //Alien Collision
        public override void Visit(AlienGrid alien)
        {
            //alien grid vs wall group
            CollisionPair.CollidePair(alien, (GameObject)ForwardIterator.GetChild(this));
        }

        public override void Visit(UFOAlienRoot alien)
        {
            CollisionPair.CollidePair((GameObject)ForwardIterator.GetChild(this), alien);
        }

        //Missile Collision
        public override void Visit(MissileGroup missile)
        {
            //missile group vs wall group
            CollisionPair.CollidePair((GameObject)ForwardIterator.GetChild(missile), this);
        }

        public override void Visit(Missile missile)
        {
            //missile vs wall group
            CollisionPair.CollidePair(missile, (GameObject)ForwardIterator.GetChild(this));
        }

    }
}