Unity 2020 build for Hololens：WorldManager.state is Unavailable

Unity Engine
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1

Hello,
When I use unity2020 build for Hololens, the WorldManager.state is always “Unavailable”. I have set the XR Plug-in Management like this:
6412149--716223--upload_2020-10-13_15-14-33.png

And it works well on Unity2019.3. The state is Active, then I can start my process.
I alse notice this:

6412149--716229--upload_2020-10-13_15-17-50.png
6412149--716229--upload_2020-10-13_15-17-50.png986×203 11.2 KB

Dose this means the “state” is unuseful? So how can I get the Hololens world state?

2

WorldManager is part of the Legacy VR API that was deprecated in 2019.3 and removed in 2020. What is it you need from the world state specifically?

3

My Process is

  1. start app
  2. check state
  3. if state is active, then set anchor position, and the next action; if state is unavailable, stop and return;

So I need to known current world state. Is there anything replace “World.state”?

4

In General SessionSubsystem.trackingState is what you want : Class XRSessionSubsystem | AR Subsystems | 2.2.0-preview.6
Enum TrackingState | AR Subsystems | 2.2.0-preview.6

For a Windows MR platform specific API only (which matches the old WorldManager.state) you can use the XRInputSubsystem extension method
WindowsMRInput.GetSpatialLocatability: Class WindowsMRInput | Windows XR Plugin | 2.4.1

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