Get timeline marker callbacks from referenced events

Unity
1

I’m implementing some rhythm-based mechanics where things happen in the game in response to timeline marker callbacks. The rhythmic pattern of callbacks is repetitive, and I want to contain all those markers in a referenced event for ease of comprehension and editing. However, it seems that Unity is no longer getting those marker callbacks when they are inside a referenced event. Is it possible to get these callbacks in Unity?

fmod-referenced-event-01
fmod-referenced-event-01760×604 70.3 KB
fmod-referenced-event-02
fmod-referenced-event-02766×283 22.9 KB

2

Which version of FMOD are you using?
We fixed an issue with marker callbacks not propagating from nested events in 2.00.11.

3

I’m using FMOD version 2.00.11 (and the associated Unity integration) and Unity 2019.3.15

4

I couldn’t tell from your image but are those markers two levels deep? I’ve just done a test here and timeline markers fire to callbacks for Events and Nested Events, just not any deeper than that. I’ve issued a task to have that fixed, it’s supposed to work for any level of nesting.

5

That’s only a single level of nesting - the timeline markers are in the event that the top-level event references. To be crystal clear: the first image is the top-level event, with references to the second event in the first layer (named “Markers”) and the second image is the full contents of said event. That’s what you mean by a single level of nesting, correct?

Thanks for looking into it! I’ll experiment some more and let you know if I figure anything out.

6

Yes, that certainly sounds like a single level of nesting and if you are on 2.00.11 that should be working. Is there any chance the libs you are using are from an older version?

7

I re-downloaded and -imported 2.00.11 unity integration - libs are all current - still no luck

8

Hey BadDreamGames

Can you confirm that you are registering the callback on the top level event, not on the nested event?

9

I’m calling EventInstance::setCallback on the top level event, is that what you mean?

_musicFmodCallback = new EVENT_CALLBACK(FMODEventCallback); _musicEventInstance.setCallback(_musicFmodCallback, EVENT_CALLBACK_TYPE.TIMELINE_BEAT | EVENT_CALLBACK_TYPE.TIMELINE_MARKER);

[AOT.MonoPInvokeCallback(typeof(EVENT_CALLBACK))] static FMOD.RESULT FMODEventCallback(EVENT_CALLBACK_TYPE type, EventInstance instance, IntPtr parameterPtr) { //... }

…where _musicEventInstance is the top-level event (1st image).

10

I’ve just done a quick proof of concept test in 2.00.11 and it’s working for me. Perhaps compare what I have here with your version.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CallbackTest : MonoBehaviour
{
    FMOD.Studio.EVENT_CALLBACK _musicFmodCallback;
    FMOD.Studio.EventInstance _musicEventInstance;


    [AOT.MonoPInvokeCallback(typeof(FMOD.Studio.EVENT_CALLBACK))]
    static FMOD.RESULT FMODEventCallback(FMOD.Studio.EVENT_CALLBACK_TYPE type, FMOD.Studio.EventInstance instance, System.IntPtr parameterPtr)
    {
        if (type == FMOD.Studio.EVENT_CALLBACK_TYPE.TIMELINE_MARKER)
        {
            var parameter = (FMOD.Studio.TIMELINE_MARKER_PROPERTIES)System.Runtime.InteropServices.Marshal.PtrToStructure(parameterPtr, typeof(FMOD.Studio.TIMELINE_MARKER_PROPERTIES));
            UnityEngine.Debug.LogFormat("Marker: {0}", (string)parameter.name);
        }

        return FMOD.RESULT.OK;
    }

    // Start is called before the first frame update
    void Start()
    {
        FMOD.Studio.EventDescription desc = FMODUnity.RuntimeManager.GetEventDescription("event:/Parent");
        desc.createInstance(out _musicEventInstance);
        
        _musicFmodCallback = new FMOD.Studio.EVENT_CALLBACK(FMODEventCallback);

        _musicEventInstance.setCallback(_musicFmodCallback, FMOD.Studio.EVENT_CALLBACK_TYPE.TIMELINE_BEAT | FMOD.Studio.EVENT_CALLBACK_TYPE.TIMELINE_MARKER);

        _musicEventInstance.start();
    }

    // Update is called once per frame
    void Update()
    {
        
    }
}

image
image1210×748 51.6 KB

11

Hey Mathew & Tristan! After making some changes I got it working as expected, but to be honest I’m not quite sure where the issue was. I’ll post again when I pin-point the problem.