Compound rigid body in cycles I would like to create a compound rigid body. I had a look at this video, therein compound bodies were created by sampling primitive bodies together. The collision shape was set to a primitive like box or capsule. Than these bodies were all parented an so connected to each other and acted as a complex body.

However, the video used the blender-game mode, where the physics panel looked different to the one available in cycles-mode. In opposite to the video there is no option to set the collision bounds to compound.

But probably some images to explain:

That hook is the a hierarchy of 9 cylinders, each is a rigid body. 



That is how it looks like in the outline:



This is the view of the physics panel:



Finally I connected each body with another, using »fixed« as constraint type, but all in all, the resulting body is not stiff and deforms, what is not what I want. I would like to have a completely stiff body. How can I gain that?
This is not possible in official blender at the moment, however this feature was written as part of the 2013 GSOC.
I haven't seen word of it since, so if someone knows why it hasn't been integrated with master yet, please tell me :P

The closest you can get is the Mesh collision shape: