Unity EventManager with delegate instead of UnityEvent

Question

I am looking for c# delegate version of this Manager using UnityEvent. I don\'t want to use this because UnityEvent is slower than C# event at most time.

Any clue on

Answer 1

A little late to the party , @programmer answer at top really helped a lot , but still wanted to share an answer if some wants to trigger events with a return value , ofcourse moderators will know what to do with this answer.

.net provides func and action , func or func

here is @programmers code with return value :

 private Dictionary> eventDictionary;

private static EventManager eventManager;

public static EventManager instance
{
    get
    {
        if (!eventManager)
        {
            eventManager = FindObjectOfType(typeof(EventManager)) as EventManager;

            if (!eventManager)
            {
                Debug.LogError("There needs to be one active EventManger script on a GameObject in your scene.");
            }
            else
            {
                eventManager.Init();
            }
        }
        return eventManager;
    }
}

void Init()
{
    if (eventDictionary == null)
    {
        eventDictionary = new Dictionary>();
    }
}

public static void StartListening(string eventName,Func listener)
{
    Func thisEvent;
    if (instance.eventDictionary.TryGetValue(eventName, out thisEvent))
    {

        thisEvent += listener;


        instance.eventDictionary[eventName] = thisEvent;
    }
    else
    {

        thisEvent += listener;
        instance.eventDictionary.Add(eventName, thisEvent);
    }
}

public static void StopListening(string eventName, Func listener)
{
    if (eventManager == null) return;
    Func thisEvent;
    if (instance.eventDictionary.TryGetValue(eventName, out thisEvent))
    {

        thisEvent -= listener;


        instance.eventDictionary[eventName] = thisEvent;
    }
}

public static bool TriggerEvent(string eventName, EventParam eventParam)
{
    Func thisEvent = null;
    if (instance.eventDictionary.TryGetValue(eventName, out thisEvent))
    {
        bool value;
        value = thisEvent.Invoke(eventParam);
        return value;
    }
    return false;
}

}

public struct EventParam { public string param1;

}

So now Trigger can be called like this

EventParam newparam = new EventParam();
    newparam.param1 = "Ty Mr Programmer this custom eventmanager";
    bool checkme;
    checkme =  EventManager.TriggerEvent("API", newparam);