public GameObject Create(GameObject.Name name, AlienCategory.Type type, float posX = 0.0f, float posY = 0.0f)
{
GameObject pGameObj = null;
switch (type)
{
case AlienCategory.Type.Green:
pGameObj = new GreenAlien(GameObject.Name.GreenAlien, GameSprite.Name.GreenAlien, posX, posY);
break;
case AlienCategory.Type.Red:
pGameObj = new RedAlien(GameObject.Name.RedAlien, GameSprite.Name.RedAlien, posX, posY);
break;
case AlienCategory.Type.White:
pGameObj = new WhiteAlien(GameObject.Name.WhiteAlien, GameSprite.Name.WhiteAlien, posX, posY);
break;
case AlienCategory.Type.Yellow:
pGameObj = new YellowAlien(GameObject.Name.YellowAlien, GameSprite.Name.YellowAlien, posX, posY);
break;
case AlienCategory.Type.Blue:
pGameObj = new BlueAlien(GameObject.Name.BlueAlien, GameSprite.Name.BlueAlien, posX, posY);
break;
case AlienCategory.Type.Grid:
pGameObj = new AlienGrid(name, GameSprite.Name.NullObject, posX, posY);
break;
case AlienCategory.Type.Column:
pGameObj = new AlienColumn(name, GameSprite.Name.NullObject, posX, posY);
break;
default:
// something is wrong
Debug.Assert(false);
break;
}
Debug.Assert(pGameObj != null);
pGameObj.ActivateGameSprite(this.pSpriteBatch);
pGameObj.ActivateCollisionSprite(this.pBoxSpriteBatch);
GameObjectMan.Attach(pGameObj);
return(pGameObj);
}
public virtual void VisitYellowAlien(YellowAlien b)
{
// no differed to subcass
Debug.WriteLine("Visit by YellowAlien not implemented");
Debug.Assert(false);
}