Vive Mocap Kit - Support

[YuriNK]

@Mr.M

Hi @

For some reason, Motion Controller components added in runtime to existing actor don’t work. It’s a bug which appeared in 4.22 and presists in 4.23. I changed “Spawn Vive Trackers” function in your project this way:

You also can modify BeginPlay event of BP_MotionController blueprint to use another mesh for trackers like here: https://sun9-48.userapi.com/c850420/v850420363/1bd9ee/sjbOg0UpdRg.jpg

It doesn’t affect the plugin itself. CaptureDevice component uses raw function (Get Tracked Device Position And Orientation) and don’t need motion controller components to work.

@Mr.M

Hi @
I test the No-HMD map in the 4.22 demo project today, and only right controller show up, rest of vive trackers and left hand don’t show up. I didn’t modify any setting, so wonder why?

Unfortunately, non-HMD mode just doesn’t work after 4.21 by the same reason. I’m thinking about workaround, but it’ll be only implemented in the demo project for 4.23.

@Mr.M

Hi @
ps2. I noticed that in No-HMD map you used Get Valid Tracked Device Ids, and in HMD map, you simply use a c++ “Spawn Trackers” function, could it be the reason why trackers don’t show up?

“Spawn Trackers” function spawns BP_Tracker actors and then updates their position in Tick using function “Get Tracked Device Position And Orientation” (just like Capture Device component). So, it avoids using Motion Controller component, and that’s why it works smoothly.