CleverRaven/Cataclysm-DDA — pull request #5049 by ianestrachan (2013-12-14 00:09:14+00:00)
Title: Make lightning illuminate surroundings

Brings back lightning! Sort of.

No explosions nearby as in the old days; instead, this PR makes it so that periodic lightning strikes will cause your surroundings to light up for one turn, as bright as day. Obviously, this is most interesting when encountered at night, and most hazardous when there are also zombies around.