Getting stuck on a btStaticPlane

[regen]

Hi all,

I'm fairly new to bullet, and have just been trying some basic things out to get the hang of it. I have some boxes constrained by some btStaticPlaneShapes, and am applying an impulse using

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applyCentralImpulse(ForceVector);

Everything works perfectly until the box settles into a stationary position. After that it won't budge off of the ground plane when I apply an impulse, and only comes loose if it collides with another object.

Am I doing something wrong, or is this a bug with either the box or plane object?

[EDIT]

...or is there a flag I have to unset to tell the engine that my stationary object is moving again?

[regen]

I'll reply to my question with the answer (admins feel free to delete the whole thread)

The collision object was using motionstates, so when the box came to a stationary state, it's activation state was changed to ISLAND_SLEEPING.

In order to get the box moving again, I had to run

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setActivationState(1)

hope this helps anyone else who has the issue!