private EventGenericDelegate addDelegate <T> (EventGenericDelegate <T> del) where T : GameEvent
{
// Early-out if we've already registered this delegate
if (delegateLookup.ContainsKey(del))
{
return(null);
}
// Create a new non-generic delegate which calls our generic one.
// This is the delegate we actually invoke.
EventGenericDelegate internalDelegate = (e) => del((T)e);
delegateLookup[del] = internalDelegate;
EventGenericDelegate thisEvent = null;
if (delegates.TryGetValue(typeof(T), out thisEvent))
{
delegates[typeof(T)] = thisEvent += internalDelegate;
}
else
{
delegates[typeof(T)] = internalDelegate;
}
Debugger.printLog("Start listening to event: " + internalDelegate.ToString());
return(internalDelegate);
}
public void AddListenerOnce <T>(EventGenericDelegate <T> del) where T : GameEvent
{
EventGenericDelegate result = addDelegate <T>(del);
if (result != null)
{
// remember this is only called once
onceLookups[result] = del;
}
}
/// <summary>
/// Removes method to be invoked when event raised.
/// </summary>
/// <typeparam name="T">The event associated with the event delegate.</typeparam>
/// <param name="del">The method to be removed.</param>
public void RemoveListener <T>(EventGenericDelegate <T> del) where T : GameEvent
{
EventGenericDelegate internalDelegate;
if (delegateLookup.TryGetValue(del, out internalDelegate))
{
EventGenericDelegate tempDel;
if (delegates.TryGetValue(typeof(T), out tempDel))
{
tempDel -= internalDelegate;
if (tempDel == null)
{
delegates.Remove(typeof(T));
}
else
{
delegates[typeof(T)] = tempDel;
}
}
Debugger.printLog("Remove event: " + del.ToString());
delegateLookup.Remove(del);
}
}
///<summary>
/// Adds method to be invoked when event raised.
/// </summary>
/// <typeparam name="T">The event associated with the event delegate.</typeparam>
/// <param name="del">The method to be stored and invoked if the event is raised.</param>
public void AddListener <T>(EventGenericDelegate <T> del) where T : GameEvent
{
addDelegate <T>(del);
}
public bool HasListener <T>(EventGenericDelegate <T> del) where T : GameEvent
{
return(delegateLookup.ContainsKey(del));
}
