What are MotionControllerLeftAim and MotionControllerRightAim used for?

[ViaCognita]

Hi!

I’m using Unreal 5.3.2 and I’ve just started to learn how to develop VR games.

Now I’m checking everything on the VR Template, in particular the VRPawn. And I don’t know what these controllers are used for.

I think the MotionControllerLeftGrip and MotionControllerRightGrip are used to get things in the game, but:

What are MotionControllerLeftAim and MotionControllerRightAim used for?

Thanks!

[Rectus_SA (Rectus)]

By default they are probably only used for attachment points for the UI interaction lasers. The OpenXR spec specifies where the grip and aim transforms are across different controllers:
https://registry.khronos.org/OpenXR/specs/1.0/html/xrspec.html#semantic-path-standard-pose-identifiers