Fife and snares

A simple pass through the building graph annotating each node with the action costs of the products required as inputs on each building. Oh dear. Oh dear this is bad. Action ranges for drains run between 3 for a Granary and 15 for a Shipyard or even 22 for a Train Station. Not good at all. The top end should probably be no higher than 15. It wouldn’t hurt for the lowest drain to bump up a step either.