CleverRaven/Cataclysm-DDA — pull request #4005 by atomicdryad (2013-10-31 07:53:22+00:00)
Title: [BUGFIX] Prevent basement-related teleportation by constraining stair searching to current  overmap tile

Tested a few mines / hotels / labs to ensure they don't break. In theory, stairs would be generated in the same 2x2 submap chunk everywhere.