Navigation problem

[Jeff]

When viewpoint collision is enabled a collision event will be generated when the viewpoint collides with an object. Information about the collision, including position, is available.

import viz
viz.go()

gallery = viz.add('gallery.ive')

viz.collision(viz.ON)

def onCollision(info):
    print 'Collided at point',info.point

viz.callback(viz.COLLISION_EVENT, onCollision)

[TopazFrost]

Actually, I am using the CaveView. The problem is the the collision callback even only works 50% of the time. I hit a wall, and sometimes it shows up, then the next time it won't. Changing the step size seems to help a bit, but not enough for a user not to get stuck on a regular basis.