hey everyone. I'm new to all this. Had the game for over a week and I think I've found where I want to build a base but have a question. I'm going to build on the roof of a 6 story apartment building I've found (as soon as I figure out how to get up there) and was wondering if I spike alternate stairways each story is the Zombie AI smart enough to have them change stairwells each time? was asking cause id like to have a quick safe way down through the building. Thanks.