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Snowy berg if humid. Harmonic noise returns. Flatter lowlands. New node icydirt: tundra surface

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paramat
2014-04-19 19:52:33 +01:00
parent ba596b269f
commit 410f1b39d1
5 changed files with 92 additions and 31 deletions
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32
functions.lua
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@ -240,14 +240,30 @@ if SINGLENODE then
spread = {x=512, y=512, z=512},
seed = 593,
octaves = 6,
persist = 0.63
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},
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 = {
@ -282,6 +298,8 @@ if SINGLENODE then
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)
@ -291,12 +309,18 @@ if SINGLENODE then
for z = z0, z1 do
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 + nvals_xlscale[nixz] * XLSAMP + grad
local densitybase = (1 - math.abs(n_base)) * BASAMP + n_xlscale * XLSAMP + grad
local terblen = math.max(1 - math.abs(n_base), 0)
local density = densitybase
+ math.abs(nvals_rough[nixyz] * terblen + nvals_smooth[nixyz] * (1 - terblen)) ^ CANEXP * CANAMP
local density = densitybase +
math.abs((n_rough + n_roughalt) * 0.5 * terblen +
(n_smooth + n_smoothalt) * 0.25 * (1 - terblen)) ^ CANEXP * CANAMP
if y >= 1 and density > -0.01 and density < 0 then
ysp = y + 1
xsp = x