Need help with EventTriggers

Unity Engine
1

The problem i’m having is that we want to run en Editor Script that would generate all the level play buttons for a given number of levels. We are using EventTriggers to call LoadLevel(int level) function witch then loads a level.
Here is the code:

[MenuItem("Custom/Add Event Trigger", false, 12)]
    public static void AddEventTrigger()
    {
        GameObject temp = GameObject.Find ("PlayButton");
        temp.AddComponent<EventTrigger> ();
        AddEventTriggerListener (temp.GetComponent<EventTrigger> (), EventTriggerType.PointerClick, 5);
    }

    public static void AddEventTriggerListener(EventTrigger trigger,
        EventTriggerType eventType,
        int levelToLoad)
    {
        LevelController levelController = GameObject.Find ("Level Controller").GetComponent<LevelController> ();
        EventTrigger.Entry entry = new EventTrigger.Entry();
        entry.eventID = eventType;
        entry.callback = new EventTrigger.TriggerEvent ();
        entry.callback.AddListener( (eventData) => { levelController.LoadLevel(levelToLoad); } );
        trigger.triggers.Add(entry);
    }

The problem is that when the EventTrigger is added to the object the on click is empty like this

2

That list only shows persistent event subscribers, not ones added by the runtime api. Persistent ones are those that are serialised into the scene. If you want to add a persistent listener you need to use this, its editor only;

3

Yes i used it to add functions to Buttons on click but couldn’t figure it out for EventTriggers can you give me en example?

The code i used for the button :

UnityEventTools.AddPersistentListener (GameObject.Find ("StartButton").GetComponent<Button> ().onClick, GameObject.Find ("GameControllers").GetComponent<GameControllerMenu> ().LogoHolderStartBtn);

this code is called from en EditorScript.

4

I am having this problem as well, does anyone know how to assign callback function to Event Trigger via custom Editor script?

5

I finally figured out how to add persistent listener to Event Trigger through Editor script!

EventTrigger trigger = Find("yourEventTrigger").GetComponent<EventTrigger>();
EventTrigger.Entry entry = new EventTrigger.Entry();
entry.eventID = EventTriggerType.PointerDown;
UnityEventTools.AddVoidPersistentListener(entry.callback, new UnityAction(YourCallback));
trigger.triggers.Clear();
trigger.triggers.Add(entry);
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