Wrist Tracker - Developer Resources

Wrist Tracker

XR_HTC_vive_wrist_tracker_interaction enables the use of VIVE Wrist Tracker interaction profiles in OpenXR.

Edit > Plugins > Search for OpenXR and ViveOpenXR, and make sure they are enabled.
Note that the " SteamVR " and " OculusVR " plugin must be disabled for OpenXR to work.
Restart the engine for the changes to take effect.

Make sure ViveOpenXR is enabled.
Select Edit > Project Settings > Plugins > Vive OpenXR > Enable Wrist Tracker under Wrist Tracker to enable OpenXR Wrist Tracker extension.
Restart the engine to apply new settings after clicking Enable Wrist Tracker.
Use Motion Controller Component and set Motion Source to LeftWristTracker or RightWristTracker to get the tracking pose.
Register Wrist Tracker key in EnhancedInput to get the key events.

The Menu key is on the top of Tracker and the Primary key is at the bottom of Tracker.

Note: Menu key on the Right device is a reserved key and cannot be retrieved.
For more available WristTracker functions, please refer to ViveOpenXRWristTrackerFunctionLibrary.h.
Type Wrist Tracker to get Wrist Tracker blueprint functions your content needs.

i. Get Wrist Tracker Location and Rotation

Provide location and rotation of the Wrist Tracker.
Get the pose of the right-hand Wrist Tracker which R light is on if Is Right is enabled.
ii. Is Wrist Tracker Key Down

To check if the buttons on the Wrist Tracker are pressed or not.

Make sure the OpenXR Wrist Tracker extension is enabled, the setting is in Edit > Project Settings > Plugins > Vive OpenXR.
The sample map is under Content > WristTracker > Map.
Sample map controls.
Press Right-hand Primary key: Change the color of right-hand ring.
Press Left-hand Primary or Menu key: Change the color of left-hand ring.
Start playing the WristTracker map, you can see the rings which represent WristTracker and the color change of the rings when you are pressing the Primary buttons.