Would it be possible for you to add if..then.. statements to the robots? I would want to be able to have one of the robots walk around and pickup stuff, but they get stuck on an item because they cant find it. If there is something that does this already then i have yet to find it.

IF ELSE has been asked for already. 

Yes, this is on the cards :) You can usually (well, sometimes then) work around the lack of specific conditional statements thru cunning use of Repeat until hands full/empty.