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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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45
init.lua
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@ -1,10 +1,13 @@
-- watershed 0.3.13 by paramat
-- watershed 0.3.14 by paramat
-- For latest stable Minetest and back to 0.4.8
-- Depends default bucket
-- License: code WTFPL, textures CC BY-SA
-- Red cobble texture CC BY-SA by brunob.santos
-- y = 47 bugfix: add snowblocks in chunk above
-- light crafting gives 8 lights
-- mid colour water at y == 2
-- flatter lowlands: terblen exponent, vary canexp, canamp
-- grassy sides on mod grass
-- Parameters
@ -20,9 +23,9 @@ local CLOUDS = true -- Mod clouds?
local TERSCA = 512 -- Vertical terrain scale
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 ATANAMP = 1.1 -- Arctan function amplitude, smaller = more and larger floatlands above ridges
local BLENEXP = 2 -- Terrain blend exponent
local TSTONE = 0.02 -- Density threshold for stone, depth of soil at TERCEN
local TRIV = -0.02 -- Maximum densitybase threshold for river water
@ -160,7 +163,7 @@ local np_base = {
scale = 1,
spread = {x=4096, y=4096, z=4096},
seed = 8890,
octaves = 4,
octaves = 3,
persist = 0.33
}
@ -172,7 +175,7 @@ local np_xlscale = {
spread = {x=8192, y=8192, z=8192},
seed = -72,
octaves = 3,
persist = 0.4
persist = 0.33
}
-- 2D noise for magma surface
@ -242,6 +245,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
local c_obsidian = minetest.get_content_id("default:obsidian")
local c_wsfreshwater = minetest.get_content_id("watershed:freshwater")
local c_wsmixwater = minetest.get_content_id("watershed:mixwater")
local c_wsstone = minetest.get_content_id("watershed:stone")
local c_wsredstone = minetest.get_content_id("watershed:redstone")
local c_wsgrass = minetest.get_content_id("watershed:grass")
@ -304,12 +308,14 @@ minetest.register_on_generated(function(minp, maxp, seed)
local n_xlscale = nvals_xlscale[nixz]
local n_magma = nvals_magma[nixz]
-- get densitybase and density
local grad = math.atan((TERCEN - y) / TERSCA) * ATANAMP -- vertical density gradient
local densitybase = (1 - math.abs(n_base)) * BASAMP + n_xlscale * XLSAMP + grad -- base terrain
local terblen = math.max(1 - math.abs(n_base), 0) -- canyon terrain blend of rough and smooth
local density = densitybase + -- add canyon terrain
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) * 0.25 * (1 - terblen)) ^ CANEXP * CANAMP
(n_smooth + n_smoothalt) * 0.5 * (1 - terblen)) ^ canexp * canamp
-- other values
local triv = TRIV * (1 - terblen) -- river threshold
local tsand = TSAND * (1 - terblen) -- sand threshold
@ -396,8 +402,8 @@ minetest.register_on_generated(function(minp, maxp, seed)
stable[si] = 1
under[si] = 0
elseif density >= tstone and nofis -- stone cut by fissures
or (density >= tstone and density < TSTONE * 2 and y <= YWAT) -- stone around water
or (density >= tstone and density < TSTONE * 2 and densitybase >= triv ) then -- stone around river
or (density >= tstone and density < TSTONE * 1.5 and y <= YWAT) -- stone around water
or (density >= tstone and density < TSTONE * 1.5 and densitybase >= triv ) then -- stone around river
local densitystr = n_strata * 0.25 + (TERCEN - y) / TERSCA
local densityper = densitystr - math.floor(densitystr) -- periodic strata 'density'
if (densityper >= 0.05 and densityper <= 0.09) -- sandstone strata
@ -408,7 +414,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
or (densityper >= 0.84 and densityper <= 0.87)
or (densityper >= 0.95 and densityper <= 0.98) then
data[vi] = c_sandstone
elseif biome == 7 and density < TSTONE * 4 then -- desert stone as surface layer
elseif biome == 7 and density < TSTONE * 3 then -- desert stone as surface layer
data[vi] = c_wsredstone
elseif math.abs(n_seam) < SEAMT then
if densityper >= 0 and densityper <= ORETHI * 4 then -- ore seams
@ -491,7 +497,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
stable[si] = 0
under[si] = 0
end
elseif y >= YWAT - bergdep and y <= YWAT + bergdep / 8 and n_temp < ICETET -- iceberg
elseif y >= YWAT - bergdep and y <= YWAT + bergdep / 8 and n_temp < ICETET -- icesheet
and density < tstone and math.abs(n_fissure) > 0.01 then
data[vi] = c_ice
under[si] = 12
@ -504,7 +510,11 @@ minetest.register_on_generated(function(minp, maxp, seed)
if n_temp < ICETET then
data[vi] = c_wsfreshice
else
data[vi] = c_wsfreshwater
if y == YWAT + 1 then
data[vi] = c_wsmixwater
else
data[vi] = c_wsfreshwater
end
end
stable[si] = 0
under[si] = 0
@ -598,7 +608,8 @@ minetest.register_on_generated(function(minp, maxp, seed)
if math.random(PAPCHA) == 2 then
watershed_papyrus(x, y, z, area, data)
end
elseif under[si] == 12 and n_humid > LOHUT then -- snowy iceberg
elseif under[si] == 12
and n_humid > LOHUT + (math.random() - 0.5) * BLEND then -- snowy iceberg
data[vi] = c_snowblock
end
end