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I'm using Bullet and want to take some action once all objects in a dynamic world have reached 0 velocity (or at least a value that's very close).

I was trying to iterate over all of them all the time and when a counter equals getNumCollisionObjects() then do that action. But it's a complex procedure and I'm beginning to think it's unnecessary.

Is there a better way, perhaps by comparing two frames or a Bullet built-in?

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Are there not callbacks for objects coming to rest and awakening? –  Patrick Hughes Jan 16 '12 at 22:49
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