public void RegisterCallback <TEventType>(EventCallback <TEventType> callback, TrickleDown useTrickleDown = TrickleDown.NoTrickleDown) where TEventType : EventBase <TEventType>, new()
{
if (m_CallbackRegistry == null)
{
m_CallbackRegistry = new EventCallbackRegistry();
}
m_CallbackRegistry.RegisterCallback <TEventType>(callback, useTrickleDown);
GlobalCallbackRegistry.RegisterListeners <TEventType>(this, callback, useTrickleDown);
}
