Generic Event Listener. Example : http://imgur.com/a4yVrQ1

EventListener.cs

using UnityEngine;
using System.Collections;
using System.Collections.Generic;


public static class EventListener
{
	private const int listListenerSizeMin = 10;
	
	public static bool debugCalls = false;
	
	// player events delegate
	public delegate void Callback(object newValue);
	
	// list of listeners
	private static Dictionary<string, List<Callback>> callbacks = new Dictionary<string, List<Callback>>(21);
	
	
	// sub
	public static void Add(object eventValue, Callback callback)
	{
		string key = GenerateKey(eventValue);
		
		// no key ? >> add list with new key
		if(!callbacks.ContainsKey(key)) callbacks.Add(key, new List<Callback>(listListenerSizeMin));
		
		// not in list >> add to list
		if(!callbacks[key].Contains(callback)) callbacks[key].Add(callback);
		
	}// Add()
	
	
	// un-sub
	public static void Remove(object eventValue, Callback callback)
	{
		string key = GenerateKey(eventValue);
		
		// has key >> remove
		if(callbacks.ContainsKey(key)) callbacks[key].Remove(callback);
		
	}// Remove()
	
	
	// launch event
	public static void Launch(object eventValue){Launch(eventValue, null);}
	public static void Launch(object eventValue, object newValue)
	{
		string key = GenerateKey(eventValue);
		
		// has key ?
		if(callbacks.ContainsKey(key))
		{
			List<Callback> listCallback = callbacks[key];
			
			// callbacks
			for(int i = 0; i < listCallback.Count; i++) listCallback[i](newValue);
			
			// debug ?
			if(debugCalls) DebugEventLaunch(key);
		}
		
	}// Launch()
	
	
	private static void DebugEventLaunch(string key)
	{
		Debug.Log(key + "\n" + TimeManager.TIME.ToString("F0") + "," + TimeManager.Tick());
		
	}// DebugEventLaunch
	
	
	private static string GenerateKey(object eventType){return eventType.GetType().ToString() + eventType.ToString();}
	
	
}// EventListener