RedRock an obstacle object with infinite mass
Inherits from: RedObject
the differences from RedObject are that it is not possilbe to change the mass and the mass is always infinite.
instance variables:
<>mass
inf. will not change.
a= RedWorld.new
b= RedRock(a)
b.mass
b.mass= 4 //no effect
b.mass
a.objects
b.dump
//see examples folder