void DoSimuate( int numFrames )
{
   InitUE();   // initialize UE engine
   scene = CreateScene();   // create a scene with some objects and characters
   fpr (int i = 0; i < numFrames; ++i) {
     Step();  // tick, update the scene
     for (int i  = 0; i < scene->numObjects; ++i)  //
      GrabObjectAnimation(secne, i);   // grab objects (bones) motions
   }
   CloseScene(scene);  // destroy the scene
}