Body tracking with 2 right arms don't work

[IsabelleCA]

I have a problem with the second right arm. I have a right arm behind the character, I made another to have my hand in front of the skirt, with a trigger to make it appear. But when I activate body tracking, only the arm that goes in front of the skirt moves, the one behind the character is completely dead. As if I would only be entitled to one right arm. The two right arms are rigger and the shoulder, elbow and wrist have been assigned to the right place. And when I activate the body tracking, I deactivate the dragger.

[TheOriginalGC]

May I ask if you have the two arms in a swap set?

[IsabelleCA]

it is only the upper arm that has a trigger to change the arm, I press the same trigger again to return to the lower arm (Default arm)

[TheOriginalGC]

Thank you for the clarification. I must admit that I'm stumped. Maybe @oksamurai has some ideas.

[IsabelleCA]

And in dragger mode, although I have deposited 0 a Stretchiness in the IK Limb, the lower body arm continues to stretch, but the upper body arm does not stretch. If that gave a clue. As if the Limb IK behavior does not recognize the lower arm of the body

[TheOriginalGC]

Perhaps the Dragger tag is interfering with the Body tracking? Have you tried removing it completely?

[alank99101739]

In the "Body" behavior added to the puppet, if you expand the "Handles" section, is the count next to the right arm joints "1" or "2"? If they are all "1" the problem might be related to the behavior not finding all the body parts.

[alank99101739]

Oh, or the behavior does not support 2 sets of body parts per profile.... One workaround for other behaviors in that case was to add a second behavior, possibly with some "fake" layers above the second arm so you can add a behavior there to bind to the second arm - behaviors look for children with tags on them, so adding at the root might be finding the first set of tagged layers and stopping. So you need to add a second behavior above the second right arm (but not above the first right arm - hence the need sometimes to add some fake layers around the second arm).

No idea if this is true for Body as well, but the trick has worked sometimes with other behaviors.

[IsabelleCA]

I just tried and it doesn't change a thing at all

[IsabelleCA]

I just tried delete the dragger and it doesn't change a thing at all

[oksamurai]

First off, great looking character!

Yeah, the issue here seems to be the two right arms. Behaviors like Limb IK and body tracking are only looking for the FIRST instance of each tag. So if it sees right elbow, right shoulder, etc - it's going to ignore any others things tagged as those things that come after it.

The primary way people get around this is adding extra behaviors. So if you added an extra Body and Limb IK behavior to that second right arm group, it should theoretically work - although two body behaviors could run into some performance issues as even one can be pretty processor intensive.

[IsabelleCA]

I added a body behavior on the second right arm and it works! thank you everyone !!!

Isabelle