- 'StairCollider2', 'StairCollisionPlane': Extended stair colliders for
the control room to properly reach the lower floor.
- 'PelletRmFloor': Added step-up ramps.
- 'TunnelCollision': Reduced slope of step-up ramp.
- 'HallExtent': Removed collision geometry exactly matching the drawable
stairs and replaced with a step-up ramp.
- 'HallExtent01': Deleted physical - it was an exact duplicate of the
drawable geometry. The object 'HallExtent02Proxy' is coincident with
this object.
- 'HallExtent02Proxy': Corrected step-up ramp to extend to the top of the
stairs.