http://starbounder.org/Human_Shield_Generator If player can lock there creation, building dungeon take a new dimension ! How to do it ? The best behavior i see could be : as default behavior : lock every tiles within some range around any active not wired generator. (look simple and usable) as advanced usage : lock tiles delimited by a custom shape. The player use a specific chain wireable delimiter to mark the area to lock, then, he link one of the delimiter to the generator to make it switch from basic circular area lock to custom user shape defined area lock.