Island Simulation question

[xakepp35]

I am using btDiscreteDynamicsWorld and btRigidBody to model space physics.
I had turned off world's gravity for some purposes.
Every still object then starts to freeze after several seconds or so.
(e.g. objects with zero linear velocity and non-zero angular velocity stops rotating)

i think this is due to island simulation.
How can i turn off island simulator sleeping or otherwise "reenable" frozen objects?

[anthrax11]

You can prevent bodies from deactivating with body->setActivationState(DISABLE_DEACTIVATION) or reactivate them with body->setActivationState(ACTIVE_TAG).

By default, bodies are deactivated after being still for some time to speed up the simulation. I don't think it's related to islands.

[xakepp35]

Thanks, this helps a lot!