How to force rigid body's callbacks invocated?

The document said the world will detect which body doesnt move since last update and then ignore it next update time. But this make my camera move difficult, say, when I press W key, I add a velocity to it, and after I released the key, of course it shouldnt move any more. But then the world will think all things is ok, and skipped the callback, regardless of the velocities I have added. So is there some way to force these functions invocated? Or some other way I might do to inform the world that something have changed?


body->setAutoFreeze( 0 );

this will force the body to stay "awake" and not fall "asleep" if it doesn't move.

Thank you walaber,
I have tried your suggestion, but it doesnt make any change . After my app started, I can keep the camera's control for a little while, then it stucked at some point and refused to move forever. Exactly as before.
Would you tell me why?

Let me make some more about it. The actual scenario is I control the camera's body to move towards any direction and if too far away(about 100 units or so), it got stuck. But if I keep it move only a little step, all things are ok. But that doesnt seem very good.
How do you think about this?
thanks in advance.

The "getting stuck" behavior you describe happens when your OgreNewt world is too small. The default size often is too small and you have to increase it.

Here is how I do it... (well, how others did it and I copied them )

// create the OgreNewt world. this must be done before any other commands can be called.
m_pNewtWorld = new OgreNewt::World();
// necessary to set, otherwise objects stick to invisible walls of small default size world
m_pNewtWorld->setWorldSize(Ogre::AxisAlignedBox(-30000,-10000,-30000,30000,30000,30000));

Oh, really, really thank you.
Not only my camera, but also I was stuck for so many days. And, at last, you rescued me!