MassiveCraft/Factions — pull request #190 by AEtherSurfer (2012-12-01 18:53:52+00:00)
Title: Enemy territory can only be claimed at the corners.  No more bee lines straight to bases.

Implements the border check algorithm documented at:
https://docs.google.com/spreadsheet/ccc?key=0AtzhKJgvHXCKdFZvR1hWMXZJVjg1S2RtMUQ1eC1qR0E

May need to have a config to switch between classic style and corner style.

Above doc shows a couple of other border check algorithms.