public DisableEvent(UnityEvent <T> evt, UnityAction <T> action)
{
this.evt = evt;
this.index = evt.IndexOf(action);
Set(false);
return;
}
public static void AddListenerIfNotExist <T>(this UnityEvent <T> evt, UnityAction <T> action)
{
if (evt.IndexOf(action) >= 0)
{
return;
}
UnityEventTools.AddPersistentListener(evt, action);
}