// method adding observer to a game object
public void AddObserver(Subject.Name name, GameObject go)
{
Observer raw = (Observer)this.PullFromReserved();
// adding derived observer based on name
if (name == Subject.Name.LeftKey || name == Subject.Name.RightKey)
{
// for left key and right key event
// create a move observer to listen
MoveObserver mo = (MoveObserver)raw;
mo.set(name, (MoveProxy)go.pProxy); // downcasting dangerous
// Add new observer to the list
this.Add(mo);
}
}
// Subscribe game object to subject
public void Subscribe(GameObject go)
{
// TODO: add null observer
Observer obs = null;
// adding derived observer based on name
if (name == Subject.Name.LeftKey || name == Subject.Name.RightKey)
{
// for left key and right key event
// create a move observer to listen
obs = new MoveObserver();
((MoveObserver)obs).set(name, (MoveProxy)go.pProxy);
}
else if (name == Name.SpaceKey)
{
// for space key, create a shoot observer
obs = new ShootObserver();
}
// Add new observer to the list
this.AddObserver(obs);
}
