It takes about a half a second to run an operation over this entire map
(Castle.smf, 16x16; AMD64 X2 3800+). If someone wanted to try making
tides, then you'd have to do it by adjusting map segments. It would probably
cause units on the boundary to get stuck.
P.S. This is smoth's fault. He asked me to make sure that ground flattening
was handled properly for LuaGaia (before even having played with it).
From there, I fixed the ground flattening for new mobile units from builders,
adjusted the .give ground flattening, I added this stupid in-game map mod
feature.
FlatLand

WaterWorld
