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Remove unnecessary smooth 3D noises. Squash 3D noise vertical scales. Flatter lowlands

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paramat
2014-04-30 07:32:01 +01:00
parent 123ab76e4f
commit dfb5a5660f
4 changed files with 16 additions and 66 deletions
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30
functions.lua
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@ -237,35 +237,19 @@ if SINGLENODE then
local np_rough = {
offset = 0,
scale = 1,
spread = {x=512, y=512, z=512},
spread = {x=512, y=256, z=512},
seed = 593,
octaves = 6,
persist = 0.67
}
local np_smooth = {
offset = 0,
scale = 1,
spread = {x=512, y=512, z=512},
seed = 593,
octaves = 5,
persist = 0.33
}
local np_roughalt = {
offset = 0,
scale = 1,
spread = {x=414, y=414, z=414},
spread = {x=414, y=207, z=414},
seed = -9003,
octaves = 6,
persist = 0.67
}
local np_smoothalt = {
offset = 0,
scale = 1,
spread = {x=414, y=414, z=414},
seed = -9003,
octaves = 5,
persist = 0.33
}
local np_base = {
offset = 0,
scale = 1,
@ -297,9 +281,7 @@ if SINGLENODE then
local minposxz = {x=x0, y=z0}
local nvals_rough = minetest.get_perlin_map(np_rough, chulens):get3dMap_flat(minposxyz)
local nvals_smooth = minetest.get_perlin_map(np_smooth, chulens):get3dMap_flat(minposxyz)
local nvals_roughalt = minetest.get_perlin_map(np_roughalt, chulens):get3dMap_flat(minposxyz)
local nvals_smoothalt = minetest.get_perlin_map(np_smoothalt, chulens):get3dMap_flat(minposxyz)
local nvals_base = minetest.get_perlin_map(np_base, chulens):get2dMap_flat(minposxz)
local nvals_xlscale = minetest.get_perlin_map(np_xlscale, chulens):get2dMap_flat(minposxz)
@ -310,19 +292,15 @@ if SINGLENODE then
for y = y0, y1 do
for x = x0, x1 do
local n_rough = nvals_rough[nixyz]
local n_smooth = nvals_smooth[nixyz]
local n_roughalt = nvals_roughalt[nixyz]
local n_smoothalt = nvals_smoothalt[nixyz]
local n_base = nvals_base[nixz]
local n_xlscale = nvals_xlscale[nixz]
local grad = math.atan((TERCEN - y) / TERSCA) * ATANAMP
local densitybase = (1 - math.abs(n_base)) * BASAMP + n_xlscale * XLSAMP + grad
local terblen = (math.max(1 - math.abs(n_base), 0)) ^ BLENEXP
local canexp = 0.5 + terblen
local canamp = 0.03 + terblen * CANAMP
local density = densitybase +
math.abs((n_rough + n_roughalt) * 0.5 * terblen +
(n_smooth + n_smoothalt) * 0.5 * (1 - terblen)) ^ canexp * canamp
local canamp = 0.01 + terblen * CANAMP
local density = densitybase + math.abs((n_rough + n_roughalt) * 0.5) ^ canexp * canamp
if y >= 1 and density > -0.01 and density < 0 then
ysp = y + 1
xsp = x