What are MotionControllerLeftAim and MotionControllerRightAim used for?

Development Platform & Builds XR Development
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1

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.

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

What are MotionControllerLeftAim and MotionControllerRightAim used for?

Thanks!

2

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