I have to simulate a box pushing in stage. 

I create a box with a puck model like this:

define puck model(

  size [ 0.3 0.3]
  mass 0.02
  obstacle_return 0
  gui_movemask 3
  fiducial_return 1 


With this model, the robot pass over the box(with obstacle_return 0) or crash (with obstacle_return 1) and the box don't move.

Are there any way to do a box pushing in stage? 


Elizabeth Duane