SpoutDev/Vanilla — pull request #18 by Pamelloes (2012-01-30 02:19:50+00:00)
Title: Improved world generation significantly.

The new system no longer fills the world with holes :D For each chunk, one random point is selected and all blocks (in that chunk) within 6 blocks away are changed if the value returned by a 3d perlin mesh (for their point) is greater then 0. It only changes stone blocks so ore is preserved and it doesn't breach the surface.