nalc/watershed
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Craft 8 lights at once. Mid colour blend water. Flatter lowlands: terblen exponent, vary canexp, canamp. Grassy sides on mod grass

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paramat
2014-04-22 14:21:21 +01:00
parent c6acea60cb
commit 123ab76e4f
7 changed files with 121 additions and 32 deletions
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14
functions.lua
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@ -229,8 +229,8 @@ if SINGLENODE then
local ATANAMP = 1.1 -- Arctan function amplitude, smaller = more and larger floatlands above ridges
local XLSAMP = 0.2 -- Extra large scale height variation amplitude
local BASAMP = 0.4 -- Base terrain amplitude
local CANAMP = 0.4 -- Canyon terrain amplitude
local CANEXP = 1.33 -- Canyon shape exponent
local CANAMP = 0.4 -- Canyon terrain maximum amplitude
local BLENEXP = 2 -- Terrain blend exponent
local xsp
local ysp
local zsp
@ -271,7 +271,7 @@ if SINGLENODE then
scale = 1,
spread = {x=4096, y=4096, z=4096},
seed = 8890,
octaves = 4,
octaves = 3,
persist = 0.33
}
local np_xlscale = {
@ -280,7 +280,7 @@ if SINGLENODE then
spread = {x=8192, y=8192, z=8192},
seed = -72,
octaves = 3,
persist = 0.4
persist = 0.33
}
for chunk = 1, 64 do
print ("[watershed] searching for spawn "..chunk)
@ -317,10 +317,12 @@ if SINGLENODE then
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)
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) * 0.25 * (1 - terblen)) ^ CANEXP * CANAMP
(n_smooth + n_smoothalt) * 0.5 * (1 - terblen)) ^ canexp * canamp
if y >= 1 and density > -0.01 and density < 0 then
ysp = y + 1
xsp = x