Experiments in pathfinding for Illy using the ngraph library written by anvaka.

Cost of movement between tiles is based on the combat terrains and rather

than have to fetch all that from the server all the combat terrain info is

stored in a hidden bitmap (it takes a few secs to load initially but much

faster than waiting on my slow server for each path).

A major part of this current experiment is playing with the adjustments

of how difficult each terrain is to travel through. In the future I may look

at also incorporating boime information in this difficulty (jungle is much

harder to cross than plains).