make an object active/deative

[LoveBumblebee]

What is the cheapest way to make a dynamic object active/deative?(not awake/sleep)

1. use INarrowPhaseCallbacks.AllowContactGeneration
2. set a far away position and sleep (deactive),restore positon and awake (active)
3. remove and add again
   Or is there another cheapest way?

[RossNordby]

If you just want a body to use very little resources and not collide with anything, then probably just remove it from the simulation and readd it later.

Making callbacks to ignore it would require a bit of effort, and moving things really far away and sleeping them would both cost more immediately (sleeping moves just as much memory around as removing a body from the simulation) and it would make the broadphase have to do more topological updates to deal with the long distance teleport.