CleverRaven/Cataclysm-DDA — pull request #2173 by atomicdryad (2013-07-24 22:42:57+00:00)
Title: Big honkin mapgen speedup: fix http://i.imgur.com/Q3i8FSr.png

speed up map::load over %1000 by using tinymap, potentially eliminating 4212 needless temporary submaps in map::generate (which resulted in 2343168+ std::vector constructor/destructors)

before: total 626ms, generate(36): 611ms, 4356 submaps created (4212 temporary)
now: total: 44ms, map::generate x 36: 30ms, 144 submaps created