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16x16 clouds, cacti, papyrus, ice, dryshrubs
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paramat
71
init.lua
71
init.lua
@ -1,22 +1,25 @@
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-- watershed 0.2.2 by paramat
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-- watershed 0.2.3 by paramat
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-- For latest stable Minetest and back to 0.4.8
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-- Depends default
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-- License: code WTFPL
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-- 0.2.3 clouds, cacti, ice, papyrus, dry shrub
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-- Parameters
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local YMIN = 6000
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local YMAX = 8000 -- Top of atmosphere / mountains / floatlands
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local TERCEN = 7008 -- Terrain centre
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local YMIN = 6000 -- Approximate base of realm stone
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local YMAX = 8000 -- Approximate top of atmosphere / mountains / floatlands
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local TERCEN = 7960 -- Terrain 'centre'. Approximate average seabed level
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local YWAT = 7024 -- Sea level
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local CLOUDY = 7152 -- Cloud level
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local TERSCA = 384 -- Vertical terrain scale
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local XLSAMP = 0 -- Extra large scale height variation amplitude
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local BASAMP = 0.3 -- Base terrain amplitude
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local CANAMP = 0.7 -- Canyon terrain amplitude
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local CANEXP = 1.33 -- Canyon shape exponent
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local TSTONE = 0.015 -- Density threshold for stone
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local TRIV = -0.027 -- Maximum densitybase threshold for river water
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local TSAND = -0.03 -- Maximum densitybase threshold for sand
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local TRIV = -0.017 -- Maximum densitybase threshold for river water
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local TSAND = -0.02 -- Maximum densitybase threshold for sand
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local FIST = 0 -- Fissure threshold at surface. Controls size of fissure entrances at surface
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local FISEXP = 0.02 -- Fissure expansion rate under surface
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local ORECHA = 1 / (7 * 7 * 7) -- Ore chance per stone node
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@ -25,9 +28,12 @@ local PINCHA = 47 -- Pine tree 1/x chance per node
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local APTCHA = 47 -- Appletree
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local FLOCHA = 36 -- Flower
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local FOGCHA = 9 -- Forest grass
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local GRACHA = 5 -- Grassland grasses
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local GRACHA = 3 -- Grassland grasses
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local JUTCHA = 16 -- Jungletree
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local JUGCHA = 9 -- Junglegrass
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local CACCHA = 529 -- Cactus
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local DRYCHA = 361 -- Dry shrub
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local PAPCHA = 3 -- Papyrus
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-- 3D noise for rough terrain
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@ -95,6 +101,17 @@ local np_xlscale = {
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persist = 0.4
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}
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-- 2D noise for clouds
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local np_cloud = {
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offset = 0,
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scale = 1,
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spread = {x=207, y=207, z=207},
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seed = 2113,
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octaves = 4,
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persist = 0.8
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}
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-- Stuff
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watershed = {}
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@ -128,8 +145,10 @@ minetest.register_on_generated(function(minp, maxp, seed)
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local c_sand = minetest.get_content_id("default:sand")
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local c_desand = minetest.get_content_id("default:desert_sand")
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local c_snowblock = minetest.get_content_id("default:snowblock")
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local c_ice = minetest.get_content_id("default:ice")
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local c_dirtsnow = minetest.get_content_id("default:dirt_with_snow")
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local c_jungrass = minetest.get_content_id("default:junglegrass")
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local c_dryshrub = minetest.get_content_id("default:dry_shrub")
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local c_stodiam = minetest.get_content_id("default:stone_with_diamond")
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local c_stomese = minetest.get_content_id("default:stone_with_mese")
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local c_stogold = minetest.get_content_id("default:stone_with_gold")
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@ -142,6 +161,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
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local c_wsredstone = minetest.get_content_id("watershed:redstone")
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local c_wsgrass = minetest.get_content_id("watershed:grass")
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local c_wsdirt = minetest.get_content_id("watershed:dirt")
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local c_wscloud = minetest.get_content_id("watershed:cloud")
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local sidelen = x1 - x0 + 1
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local chulens = {x=sidelen, y=sidelen, z=sidelen}
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@ -155,6 +175,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
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local nvals_base = minetest.get_perlin_map(np_base, chulens):get2dMap_flat(minposxz)
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local nvals_biome = minetest.get_perlin_map(np_biome, chulens):get2dMap_flat(minposxz)
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local nvals_xlscale = minetest.get_perlin_map(np_xlscale, chulens):get2dMap_flat(minposxz)
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local nvals_cloud = minetest.get_perlin_map(np_cloud, chulens):get2dMap_flat(minposxz)
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local nixyz = 1
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local nixz = 1
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@ -196,7 +217,8 @@ minetest.register_on_generated(function(minp, maxp, seed)
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end
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if density >= tstone and nofis -- stone cut by fissures
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or (density >= tstone and density < TSTONE * 2 and y <= YWAT) then -- or stone layer around water
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or (density >= tstone and density < TSTONE * 3 and y <= YWAT) -- or stone layer around water
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or (density >= tstone and density < TSTONE * 3 and densitybase >= triv ) then -- or stone layer around river
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if n_biome > 0.7 then
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data[vi] = c_wsredstone
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elseif math.random() < ORECHA then
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@ -243,17 +265,38 @@ minetest.register_on_generated(function(minp, maxp, seed)
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under[si] = 0
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end
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elseif y <= YWAT and density < tstone then -- sea water, not in fissures
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data[vi] = c_water
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if y == YWAT and n_biome < -1 then
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data[vi] = c_ice
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else
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data[vi] = c_water
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if y == YWAT and n_biome > 0.2 and stable[si] >= 1
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and math.random(PAPCHA) == 2 then -- papyrus in desert and rainforest
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watershed_papyrus(x, y, z, area, data)
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end
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end
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stable[si] = 0
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under[si] = 0
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elseif densitybase >= triv and density < tstone then -- river water, not in fissures
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data[vi] = c_wswater
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if n_biome < -1 then
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data[vi] = c_ice
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else
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data[vi] = c_wswater
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end
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stable[si] = 0
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under[si] = 0
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elseif y == CLOUDY then -- clouds
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local xrq = 16 * math.floor((x - x0) / 16)
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local zrq = 16 * math.floor((z - z0) / 16)
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local qixz = zrq * sidelen + xrq + 1
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if nvals_cloud[qixz] > 0.5 then
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data[vi] = c_wscloud
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end
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stable[si] = 0
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under[si] = 0
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else -- possible above surface air node
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if y >= YWAT and under[si] ~= 0 then
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if under[si] == 1 then
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if math.random(PINCHA) == 2 then
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if n_biome > -1 and math.random(PINCHA) == 2 then
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watershed_pinetree(x, y, z, area, data)
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else
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data[viu] = c_dirtsnow
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@ -290,6 +333,12 @@ minetest.register_on_generated(function(minp, maxp, seed)
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data[vi] = c_jungrass
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end
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end
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elseif under[si] == 5 then
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if n_biome < 0.8 and math.random(CACCHA) == 2 then
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watershed_cactus(x, y, z, area, data)
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elseif n_biome < 0.8 and math.random(DRYCHA) == 2 then
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data[vi] = c_dryshrub
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end
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end
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end
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stable[si] = 0
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