Combine multiple Rigidbodies?

I have several nodes with rigidbody. I want to “join” them as one object.

A quick search on Bullet forum, I found the solution is using Fixed Constraint. But, Urho3d don’t have the implementation of this constraint. Do anyone know alternative solutions?

Urho does have constraints.
Also if u just want to combine the shapes into a single rigid body you can create compound shapes.
read:

Oh, I didn’t know we can use several shapes.
Thank you, this is what I’m looking for.