title: Bullet physics engine, how to freeze an object?
body: <p>Using Bullet 2.76 I'm trying to freeze an object (rigid body) so that it instantly stops moving, but still responds to collisions.</p>
  
  <p>I tried setting it's activation state to DISABLE_SIMULATION, but then it's virtually nonexistent to other objects. Furthermore, if objects "collide" with it when it's disabled, strange things begin to happen (object's falling through static bodies, etc.)</p>
  
  <p>I suppose, temporarily converting it to a static rigid body could work, but is there an existing "native" way to achieve this on Bullet's side?</p>
  
  <p><b>Edit:</b> Is there a way to turn off gravity for a specific object?</p>