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New rivergen tuned. Independant vertical ore scale

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This commit is contained in:
paramat 2014-05-05 11:27:50 +01:00
parent a871585a5e
commit 37bc4d25b2
2 changed files with 25 additions and 22 deletions
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4
functions.lua
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@ -268,8 +268,8 @@ if SINGLENODE then
}
for chunk = 1, 64 do
print ("[watershed] searching for spawn "..chunk)
local x0 = 80 * math.random(-24, 24) - 32
local z0 = 80 * math.random(-24, 24) - 32
local x0 = 80 * math.random(-32, 32) - 32
local z0 = 80 * math.random(-32, 32) - 32
local y0 = -32
local x1 = x0 + 79
local z1 = z0 + 79

43
init.lua
View File

@ -4,9 +4,8 @@
-- License: code WTFPL, textures CC BY-SA
-- Red cobble texture CC BY-SA by brunob.santos
-- less grass and shrubs
-- stone waterseal around streams
-- fog in humid valleys
-- ore/strata vertical scale of 512
-- tune params via riverdev
-- Parameters
@ -19,21 +18,22 @@ local SAMP = 3 -- Sandline amplitude
local YCLOMIN = 207 -- Minimum height of mod clouds
local CLOUDS = true -- Mod clouds?
local TERSCA = 256 -- Vertical terrain scale
local XLSAMP = 0.2 -- Extra large scale height variation amplitude
local BASAMP = 0.4 -- Base terrain amplitude
local MIDAMP = 0.2 -- Mid terrain amplitude
local CANAMP = 0.5 -- Canyon terrain maximum amplitude
local ATANAMP = 1.1 -- Arctan function amplitude, smaller = more and larger floatlands above ridges
local TERSCA = 512 -- Vertical terrain scale
local XLSAMP = 0.1 -- Extra large scale height variation amplitude
local BASAMP = 0.3 -- Base terrain amplitude
local MIDAMP = 0.1 -- Mid terrain amplitude
local CANAMP = 0.4 -- Canyon terrain maximum amplitude
local ATANAMP = 1 -- Arctan function amplitude, smaller = more and larger floatlands above ridges
local TSTONE = 0.02 -- Density threshold for stone, depth of soil at TERCEN
local TRIVER = -0.03
local TRSAND = -0.033
local TSTREAM = -0.01
local TSSAND = -0.011
local TRIVER = -0.028
local TRSAND = -0.035
local TSTREAM = -0.004
local TSSAND = -0.005
local TLAVA = 2.3 -- Maximum densitybase threshold for lava, small because grad is non-linear
local TFIS = 0.01 -- Fissure threshold, controls width
local TSEAM = 0.1 -- Seam threshold, width of seams
local ORESCA = 512 -- Seam system vertical scale
local ORETHI = 0.002 -- Ore seam thickness tuner
local BERGDEP = 32 -- Maximum iceberg depth
local TFOG = -0.04 -- Fog top densitymid threshold
@ -283,18 +283,21 @@ minetest.register_on_generated(function(minp, maxp, seed)
local n_absbase = math.abs(nvals_base[nixz])
local n_xlscale = nvals_xlscale[nixz]
local n_magma = nvals_magma[nixz]
-- get densitybase and density
-- get densities
local n_invbase = (1 - n_absbase)
local grad = math.atan((TERCEN - y) / TERSCA) * ATANAMP
local densitybase = (1 - n_absbase) * BASAMP + n_xlscale * XLSAMP + grad
local densitybase = n_invbase * BASAMP + grad + 0.1
local densitymid = n_absmid * MIDAMP + densitybase
local density = n_absterrain * CANAMP * n_absmid + densitymid
local canexp = 0.2 + n_invbase * 0.8
local canamp = n_invbase * CANAMP
local density = n_absterrain ^ canexp * canamp * n_absmid + densitymid
-- other values
local terblen = math.max(1 - n_absbase, 0) -- = 1 at ridge
local triver = TRIVER * n_absbase -- river threshold
local trsand = TRSAND * n_absbase -- sand
local tstream = TSTREAM * (1 - n_absmid) -- river sand
local trsand = TRSAND * n_absbase -- river sand
local tstream = TSTREAM * (1 - n_absmid) -- stream threshold
local tssand = TSSAND * (1 - n_absmid) -- stream sand
local tstone = TSTONE * (1 + grad * 0.5) -- stone threshold
local tstone = TSTONE * (1 + grad) -- stone threshold
local tlava = TLAVA * (1 - n_magma ^ 4 * terblen ^ 16 * 0.5) -- lava threshold
local ysand = YSAV + n_fissure * SAMP + math.random() * 2 -- sandline
local bergdep = math.abs(n_seam) * BERGDEP -- iceberg depth
@ -380,7 +383,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
or (density >= tstone and density < TSTONE * 1.2 and y <= YWAT) -- stone around water
or (density >= tstone and density < TSTONE * 1.2 and densitybase >= triver ) -- stone around river
or (density >= tstone and density < TSTONE * 1.2 and densitymid >= tstream ) then -- stone around stream
local densitystr = n_strata * 0.25 + (TERCEN - y) / TERSCA
local densitystr = n_strata * 0.25 + (TERCEN - y) / ORESCA
local densityper = densitystr - math.floor(densitystr) -- periodic strata 'density'
if (densityper >= 0.05 and densityper <= 0.09) -- sandstone strata
or (densityper >= 0.25 and densityper <= 0.28)