using System;
using System.Diagnostics;


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

        public AlienColumn(GameObject.ObjectName objName, Sprite.SpriteName spriteName, float x, float y)
            : base(objName, spriteName)
        {
            this.x = x;
            this.y = y;
            this.pColObj.pCollisionSprite.SetColor(0.0f, 0.0f, 1.0f);
        }


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

        public void ResurrectCol(float x, float y)
        {
            this.x = x;
            this.y = y;

            this.SetCollisionColor(0.0f, 0.0f, 1.0f);
            base.Ressurect();
        }

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

        public override void Remove()
        {
            Debug.WriteLine("Removing: {0}", this.name);

            this.pColObj.pCollisionRect.Set(0.0f, 0.0f, 0.0f, 0.0f);
            base.Update();

            //update parent (root)
            GameObject pParent = (GameObject)this.pParent;
            pParent.Update();

            //remove it
            base.Remove();
        }

        public override void PrintComponent()
        {
            Debug.WriteLine("\nColumn:");

            // walk through the list and render
            Iterator pIt = this.pDLinkMan.GetIterator();
            Debug.Assert(pIt != null);

            GameObject pNode = (GameObject)pIt.First();

            // Walk through the nodes
            while (!pIt.IsDone())
            {
                // Update the node
                Debug.Assert(pNode != null);
                pNode.PrintComponent();

                pNode = (GameObject)pIt.Next();
            }
        }


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

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

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


    } //end class

} //end namespace