Shields cover a 3x3 atmosphic square. Does this assume that the city with the shield generator is in the center of that square?
If this is the case then are squares on the opposite side of the map covered if the the city is located on the edge for example city with generator 0,1 and another city is at 11,1. Assuming of course the planet is round.
Bound in a nutshell I am the king of infinite space.