//this observer triggers the explosion animation before removing an alien;
public override void Notify()
{
//todo - create an explosion manager that can add and remove explosion objects
//can't simply swap image of the alien object due to proxy pattern - stupid
//get the coordinates of the destroyed subject;
this.pos_x = this.pSubject.pObjB.x;
this.pos_y = this.pSubject.pObjB.y;
//create a game object to temporarily render in the position of the destroyed subject
//game sprites and sprite batch stuff is taken care of in the constructor;
this.pAlienExplosionObj = new ExplodingAlien(GameObject.Name.ExplodingAlien, GameSprite.Name.AlienExplosion, 0, this.pos_x, this.pos_y);
this.pAlienExplosionObj.x = this.pos_x;
this.pAlienExplosionObj.y = this.pos_y;
GameObjectManager.AttachTree(this.pAlienExplosionObj);
this.pAlienExplosionObj.Update();
//pass to delay manager
AnimateAlienExplosionObserver pObserver = new AnimateAlienExplosionObserver(this);
DelayedObjectManager.Attach(pObserver);
}
public AnimateAlienExplosionObserver(AnimateAlienExplosionObserver m)
{
//transfer data here;
this.pAlienExplosionObj = m.pAlienExplosionObj;
this.pos_x = m.pos_x;
this.pos_y = m.pos_y;
}