progwml6/Natura — pull request #193 by Cheeseum (2014-09-20 18:28:23+00:00)
Title: Fix some berry/cactus generation checks.

world.getBlock no longer returns null when it finds air blocks, this changes those into world.isAirBlock checks.
Saguaro cactus was also not generating in most of the desert because sand wasn't a valid "ground" block.