SteamVR plugin - what is responsible for moving the camera in response to HMD movement?

Target Platforms XR
1

I’m using the SteamVR plugin, and I’ve been looking through its scripts trying to find what actually moves the in-game camera when the HMD moves. As in, if this script was disabled, the camera in-game wouldn’t move at all when I moved the HMD. I haven’t been able to find a script that does this in the Assets>SteamVR>Scripts folder. Where is the script responsible for this, and what is it named?

2

Since Unity 5.4, movement of the camera is done natively by Unity itself, not the SteamVR asset.

3

Thanks! Is there any way to configure unity’s camera movement?

4

The actual camera node itself, I don’t think so. But you can parent the camera under another transform and move that.

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5

Hey, I tried parenting the camera to a cube, but was still able to look around inside the HMD. Any other ideas?

6

Correct. This just allows you to offset the camera, for example if you wanted to put the person in a moving car.
As far as I know there is no option to control the local transform of the camera and I don’t think there should be one. It sounds like you want to either disable the tracking of the headset or manually control the camera, but this would create a very unpleasant experience for the user.

7

This is for research purposes – not an actual game – so that is exactly the kind of stuff I want to break and tweak.

8

You would have to look through the SteamVR SDK to see if there is some sort of command to disable it. For example I know in the Oculus SDK you can turn off positional tracking, but I’ve never seen anything to disable rotation.

9

Take a look at XRDevice.DisableAutoXRCameraTracking(_camera, true);

This stops the camera moving and rotating, letting you set the locations manually.

10

Did you ever find a way to do this?