Up and Coming

Reset Rift yaw when game starts

14 replies
3255 views

Hey Unity users,

I am building a demo of a (virtual) scene to experience while being sit on a chair with the Rift.
When my Unity software starts, the screen is all black so that no image is displayed during the time I am giving the Rift to the participant for the demo. He has time to put the Rift on his head and when he is ready, I am pressing a key and the virtual world fades in on the screen.

The problem with this is that when I start my software, it uses the Rift yaw value at that moment for the 'forward' direction of the camera. If then I pass the Rift the someone who puts it on but is not oriented as the Rift was when my software started, he will see the virtual world has he had already rotated...

I need to make sure that no matter what the current Rift yaw value is, when I press the key to start displaying my virtual world on the screen, it should be 'reset' so that the camera direction will be straight forward. This way I can press the key when the guy is looking straight in front of him and make sure he sees what I want him to see at startup.

Any idea how to do that ? I know in the Oculus demos, a key is used to reset the sensor data. In my case only the yaw is needed.
I tought InitializeInputs or SetCameras from OVRPlayerController would do that but it does not help...

Thanks !

This topic has been closed for replies.

C

cybereality

Inspiring

You can use the following:

OVRDevice.ResetOrientation(0);

B

bdeschryverAuthor

Up and Coming

thank you for your asnwer Cyberreality.

I am trying to use this from a script attached to the OVRPlayerController, using this command:


GetComponentInChildren<OVRDevice>().SendMessage ("ResetOrientation",0);

but I am getting an error of "SendMessage ResetOrientation has no receiver".
Would you know why ?

Thank you !

R

raidho36

Up and Coming

You can just call it directly from pretty much anywhere.

GameObject.Find("OVRCameraController").GetComponent<OVRDevice>().ResetOrientation(0);

B

bdeschryverAuthor

Up and Coming

thanks ! I'll try that asap !

B

bdeschryverAuthor

Up and Coming

raidho36,

I tried your code but it does not work, as ResetOrientation is a static function.
I went around this by adding my own non-static function in OVR device script which in turns calls the official ResetOrientation.
Can you confirm this ?

Thanks again !

R

raidho36

Up and Coming

I just popped out that out of my head so I forgot it was static.

What you actually do is just directly invoke the function, exactly like cyberreality posted it.

P

phileday

Up and Coming

I'm still having trouble with this. I using Javascript and use this code:

GameObject.Find("OVRCameraController").OVRDevice.ResetOrientation(0);

and get this error

NullReferenceException: Object reference not set to an instance of an object
Boo.Lang.Runtime.RuntimeServices.GetDispatcher (System.Object target, System.String cacheKeyName, System.Type[] cacheKeyTypes, Boo.Lang.Runtime.DynamicDispatching.DispatcherFactory factory)
Boo.Lang.Runtime.RuntimeServices.GetDispatcher (System.Object target, System.Object[] args, System.String cacheKeyName, Boo.Lang.Runtime.DynamicDispatching.DispatcherFactory factory)
Boo.Lang.Runtime.RuntimeServices.Invoke (System.Object target, System.String name, System.Object[] args)
UnityScript.Lang.UnityRuntimeServices.Invoke (System.Object target, System.String name, System.Object[] args, System.Type scriptBaseType)
Player Script.Update () (at Assets/Scripts/Player Script.js:350)

Any help would be great appreciated.

Phil

B

bdeschryverAuthor

Up and Coming

I don't know if this applies to you in Javascript, but you can't call the function ResetOrientation like you do because then you are trying to use it on a specific instance (the gameboject you are finding with GameObject.Find("OVRCameraController")).
As it is a static function, you can call it only from inside the class itslef.
My solution was to add in the OVRDevice class a non-static function called ResetOrientation2 which calls ResetOrientation(0) directly.

Someone corrects me if I am wrong...

P

phileday

Up and Coming

I'm not sure how classes are dealt with in Java. I'm relatively new to unity so I'm still learning.

Ultamitly what I'm hopeing to achive is when the user hits a key the orientation is reset. It doesn't have to be part of another script or attached to a curtain object or in Javascript just as long as the player can hit say "R" at any point of the game and the orientation is reset.

An example of a complete script with wrong code is provided below.
------------------------------------------------------------------------------------------------------------
#pragma strict

function Start () {
}

function Update () {
if ((Input.GetButtonDown ("Fire1"))){
GameObject.Find("OVRCameraController").OVRDevice.ResetOrientation(0); (Wrong code)
}
}
----------------------------------------------------------------------------------------------------------

As I mentioned it doesn't even have to be in Java.

Hopefully that might make it easier to give me advice on how to apply this. If i come up with an answer with my research I'll also post it here so if you having trouble yourself keep checking back.

Cheers.

B

bdeschryverAuthor

Up and Coming

I was trying to do the same exact thing and it works if you do it like I described in my last message.
When hitting a key, trigger a non static function that you add to the OVRDevice class. This function will call the static one.

Show more replies

Get Help

Sign up

Login with SSO

Login to the community

Login with SSO