[VR][VIVE] allow rotation only ?

[Kerbiriou]

Hi, I’m making a VR game with VIVE, and I want the view to be locked at a certain position, but still allowed to look around.
In other words, I want to simulate Occulus behaviour with a VIVE setup

At first sight I thought it would be piece of cake, but I’m fairly stuck in my project, I tried a lot to modify the SteamVR scripts, to apply “(local)position = Vector3.zero every Updates”, nothing works…

I did not found this issue on unity’s forum so If you have any ideas, let me know,
thanks a lot

[Kerbiriou]

I finally figured out a solution: Moving the camera rig to offset the head position, but it only works if you use localPosition, there is my script: (put it directly on [CameraRig])

public class CameraRigStabilizer : MonoBehaviour {

    private Vector3 InitialPos;
    private Vector3 hmdPos;
    public GameObject HMD;
    public Transform CameraPos;
	
	void Start ()
    {
         InitialPos = transform.position;
	}
	
	// Update is called once per frame
	void LateUpdate ()
    {
        //hmdPos = HMD.transform.position;                         Can't work in world position
        //transform.position = InitialPos - hmdPos;                for some reason
        hmdPos = HMD.transform.localPosition;
        transform.position = CameraPos.position - hmdPos;
	}
    
 }

HMD = camera (head)
, CameraPos = Where you want your head to be

hope that will help someone

[FalconCK]

UnityEngine.XR.InputTracking.disablePositionalTracking = true;

[LukeSkypewalker]

Dear @Kerbiriou ,

I have a similar task, (but I have to discard Z_rotation) and your script looks like a great place to start. Anyway, I can’t reproduce your solution even without any changes. Can you share a demo scene (work37 gmail com) or explain more verbosely how to use your scipt?

I’ve attached it to [CameraRig], HMD = camera (head) ,
CameraPos = I’ve made an empty GameObject in the Root of the hierarchy. Maybe something here is wrong

Thanks!

[pnewyork]

Dear @Kerbiriou ,

I tried to use your script for allowing rotation only.
(I put this script on [CameraRig], and I attached Camera(head) object as HMD, empty gameObjcect as CamerPos)

But, camera still move around.

Do you have any idea to solve this problem?

Thanks!

I’m working on Unity 5.5.