public static void StartListening(string eventName, UnityAction <string> listener)
{
SkillEvent currentEvent;
if (Instance._events.TryGetValue(eventName, out currentEvent))
{
currentEvent.AddListener(listener);
}
else
{
currentEvent = new SkillEvent();
currentEvent.AddListener(listener);
Instance._events.Add(eventName, currentEvent);
}
}