Question OpenXR/New input System, detect HMD removed?

I have the same issue, but only in builds.

In editor (Unity 2022.2.18) everything works fine when I'm using Quest 2 with a link cable. But when I'm make a build the userPresence.Started event is most of the times are not called (chance of workin is about 10%).
Input System package 1.5.1

Tested with Oculus XR Plugin 4.0.0 and with OpenXR 1.7.0, both do the same.

 

Hi, I have a similar issue where the user presence always returns true on the Samsung Odyssey WMR headset, when the OpenXR runtime is set to WMR, but it works correctly when using SteamVR runtime.
Is there a way to get the user presence correctly with WMR runtime?

 

Update using Unity 2022.1.2f1
Using the "user presence" input action described previously in thread works for both Valve Index and Quest 2 in Rift mode. However, I have not found any method to let it work on standalone Quest 2. I've also tried using a session open XR feature described in another thread which had the exact same results.
InputDevices.GetDeviceAtXRNode(XRNode.Head); Hasn't worked for me either.

Anyone have any luck?

 

I've been grappling with this for some time. I've just revisited and I think I've found a way around it for Quest 2.

I am using Unity 2021.3.4f1 with OpenXR. I do however have Oculus Integration package installed, but only the Platform, Spatializer and VR folders (to try and cut down on bloat). I have found that using OVRPlugin.userPresent within the update returns a bool if the user is present (aka at the light sensor). This works without having the OVRManager component and can be inputted in scripts away from the XROrigin. You can then use that bool to check for user presence.

I'm just working on the code now but will publish once I have something working

 

Here is my script with a countdown timer for when the headset is removed (so that I can restart the video the user will be watching in my use case)

Code (CSharp):

1. using UnityEngine;
2.  
3. public class DetectHeadsetPresenceView : MonoBehaviour
4. {
5.     bool isUserPresent;
6.     bool presenceReset = false;
7.     bool countingDown = false;
8.  
9.     [SerializeField]
10.     // Set this to 0 if you don't want a timeout duration
11.     float timeoutDuration = 10f;
12.  
13.     float count = 0f;
14.  
15.     void Update()
16.     {
17.         // Set user presence bool
18.         isUserPresent = OVRPlugin.userPresent;
19.         //Debug.Log("IS USER PRESENT: " + isUserPresent);
20.  
21.         // Reset countdown
22.         if (isUserPresent && (countingDown || count != 0f))
23.         {
24.             countingDown = false;
25.             count = 0f;
26.         }
27.  
28.         // Begin the countdown
29.         if (!isUserPresent && !countingDown && !presenceReset)
30.         {
31.             countingDown = true;
32.         }
33.         // Run the countdown
34.         else if(!isUserPresent && countingDown && count < timeoutDuration)
35.         {
36.             count += Time.deltaTime;
37.             //Debug.Log("Presence count: " + count);
38.         }
39.         // Countdown complete and call Absent event
40.         else if (!isUserPresent && countingDown && count >= timeoutDuration)
41.         {
42.             GameManager.HeadsetPresenceController.OnUserAbsent?.Invoke();
43.             countingDown = false;
44.             count = 0f;
45.             presenceReset = true;
46.         }
47.         // Call Present event
48.         else if (isUserPresent & presenceReset)
49.         {
50.             GameManager.HeadsetPresenceController.OnUserPresent?.Invoke();
51.             countingDown = false;
52.             count = 0f;
53.             presenceReset = false;
54.         }
55.         // Else, User is present
56.     }
57. }
58.  

 

Hi,
I'm trying this solution, but on the Quest 2 it always returns true even when I remove the visor.
Is there anything I can update to make it work?

I'm using Unity 2021.7, OpenXR, XR Interaction 2.3.2

 

OpenXR for me also doesn't properly show userPresence (both for the InputActionReference or the TryGetFeatureValue(CommonUsage...) approaches).

Switching to the OculusXR plugin though reports userPresence correctly through both approaches mentioned above.

For OpenXR, I get constant true for the TryGetFeatureValue, while false for the InputActionReference.

Using Quest 2 in Rift mode and will be using it with a Windows build.

Not sure if the Meta Quest Support for OpenXR in Android mode works properly.

PS: OpenXR also has a sort of pause-like behaviour when the proximity sensor of Q2 detects no user, which resumes when a user is present (mounted headset). On the other hand, OculusXR plugin does nothing of the sort.

 

Did you do anything special to get the build to run on Quest? I get errors when trying to access OVRPlugin while using openxr, it can't find the DLL

 

Looks like there will be a fix soon - from the other thread about this: https://forum.unity.com/threads/ocu...ce-state-should-it-work.1451983/#post-9431270