TheDarklingWolf/Cataclysm-DDA — pull request #843 by kevingranade (2013-05-05 03:36:15+00:00)
Title: Push adjacent overmap variables up into overmap::draw_overmap() instead ...

...overmap::draw() and only reload when necessary.
Partially addresses #713
Makes the lag when scrolling around the overmap manageable (there's a brief pause when you hit the overmap border , but not on every refresh like there was previously.)