3 biomes, tune parameters, range 3 water
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paramat
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@ -1,4 +1,4 @@
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watershed 0.1.0 by paramat
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watershed 0.1.1 by paramat
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For latest stable Minetest back to 0.4.8
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Depends default
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Licenses: code WTFPL
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135
init.lua
135
init.lua
@ -1,4 +1,4 @@
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-- watershed 0.1.0 by paramat
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-- watershed 0.1.1 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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@ -7,58 +7,59 @@
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local YMIN = 6000
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local YMAX = 8000
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local TERCEN = 7000 -- Terrain centre
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local YWAT = 7256 -- Sea level
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local TERCEN = 7008 -- Terrain centre
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local YWAT = 7024 -- Sea level
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local TERSCA = 512 -- Vertical terrain scale
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local TSTONE = 0.02 -- Density threshold for stone
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local RINAMP = 0.5 -- Ridge noise amplitude
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local RIDEXP = 1.2 -- Ridge exponent, controls sharpness of ridges
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local TRIV = -0.08 -- Ridge density threshold for river water at sea level
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local TEREXP = 0.8 -- Terrain exponent, controls shape of river canyons
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local TERAMP = 0.5 -- Terrain amplitude relative to ridge
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local TDIRT = 0.01 -- Density threshold for dirt
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local BASAMP = 0.5 -- Base terrain amplitude
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local BASEXP = 0.8 -- Base terrain exponent
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local CANAMP = 0.5 -- Canyon terrain amplitude
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local TRIV = -0.012 -- Maximum densitybase threshold for river water
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local TSAND = -0.015 -- Maximum densitybase threshold for sand
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-- 3D noise for rough terrain
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local np_terrough = {
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local np_rough = {
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offset = 0,
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scale = 1,
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spread = {x=414, y=414, z=414},
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seed = 5900033,
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spread = {x=512, y=512, z=512},
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seed = 593,
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octaves = 6,
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persist = 0.6
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}
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-- 3D noise for smooth terrain
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local np_terrsmoo = {
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local np_smooth = {
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offset = 0,
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scale = 1,
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spread = {x=414, y=414, z=414},
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seed = 5900033,
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spread = {x=512, y=512, z=512},
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seed = 593,
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octaves = 6,
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persist = 0.4
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}
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-- 3D noise for ridge noise
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-- 2D noise for base terrain / riverbed height, terrain blend, river and river sand depth
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local np_terridge = {
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local np_base = {
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offset = 0,
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scale = 1,
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spread = {x=1024, y=1024, z=1024},
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seed = -4747,
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spread = {x=4096, y=4096, z=4096},
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seed = 8890,
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octaves = 3,
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persist = 0.4
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persist = 0.5
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}
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-- 2D noise for ranges and terrain blend
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-- 2D noise for biomes
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local np_range = {
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local np_biome = {
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offset = 0,
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scale = 1,
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spread = {x=2048, y=2048, z=2048}, -- spread is still stated with xyz values
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seed = -188900,
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octaves = 2,
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persist = 0.4
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spread = {x=2048, y=2048, z=2048},
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seed = -677772,
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octaves = 3,
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persist = 0.5
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}
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-- Stuff
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@ -67,6 +68,24 @@ watershed = {}
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-- Nodes
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minetest.register_node("watershed:grass", {
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description = "WS Grass",
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tiles = {"default_grass.png", "default_dirt.png", "default_grass.png"},
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is_ground_content = false,
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groups = {crumbly=3,soil=1},
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drop = "default:dirt",
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sounds = default.node_sound_dirt_defaults({
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footstep = {name="default_grass_footstep", gain=0.25},
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}),
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})
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minetest.register_node("watershed:redstone", {
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description = "WS Red Stone",
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tiles = {"default_desert_stone.png"},
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groups = {cracky=3},
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sounds = default.node_sound_stone_defaults(),
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})
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minetest.register_node("watershed:stone", {
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description = "WS Stone",
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tiles = {"default_stone.png"},
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@ -95,7 +114,7 @@ minetest.register_node("watershed:water", {
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liquid_alternative_source = "watershed:water",
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liquid_viscosity = WATER_VISC,
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liquid_renewable = false,
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liquid_range = 1,
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liquid_range = 3,
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post_effect_color = {a=64, r=100, g=100, b=200},
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groups = {water=3, liquid=3, puts_out_fire=1},
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})
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@ -132,7 +151,7 @@ minetest.register_node("watershed:waterflow", {
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liquid_alternative_source = "watershed:water",
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liquid_viscosity = WATER_VISC,
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liquid_renewable = false,
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liquid_range = 1,
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liquid_range = 3,
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post_effect_color = {a=64, r=100, g=100, b=200},
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groups = {water=3, liquid=3, puts_out_fire=1, not_in_creative_inventory=1},
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})
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@ -159,21 +178,27 @@ minetest.register_on_generated(function(minp, maxp, seed)
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local data = vm:get_data()
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local c_air = minetest.get_content_id("air")
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local c_wsstone = minetest.get_content_id("watershed:stone")
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local c_sand = minetest.get_content_id("default:sand")
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local c_wswater = minetest.get_content_id("watershed:water")
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local c_water = minetest.get_content_id("default:water_source")
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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_dirt = minetest.get_content_id("default:dirt")
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local c_wswater = minetest.get_content_id("watershed:water")
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local c_wsstone = minetest.get_content_id("watershed:stone")
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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 sidelen = x1 - x0 + 1
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local chulens = {x=sidelen, y=sidelen, z=sidelen}
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local minposxyz = {x=x0, y=y0, z=z0}
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local minposxz = {x=x0, y=z0}
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local nvals_terrough = minetest.get_perlin_map(np_terrough, chulens):get3dMap_flat(minposxyz)
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local nvals_terrsmoo = minetest.get_perlin_map(np_terrsmoo, chulens):get3dMap_flat(minposxyz)
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local nvals_terridge = minetest.get_perlin_map(np_terridge, chulens):get3dMap_flat(minposxyz)
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local nvals_rough = minetest.get_perlin_map(np_rough, chulens):get3dMap_flat(minposxyz)
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local nvals_smooth = minetest.get_perlin_map(np_smooth, chulens):get3dMap_flat(minposxyz)
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local nvals_range = minetest.get_perlin_map(np_range, chulens):get2dMap_flat(minposxz)
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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 nixyz = 1
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local nixz = 1
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@ -193,22 +218,44 @@ minetest.register_on_generated(function(minp, maxp, seed)
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local vi = area:index(x0, y, z)
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for x = x0, x1 do -- for each node do
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local si = x - x0 + 1
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local ridge = 1 - math.abs(nvals_range[nixz]) ^ RIDEXP + nvals_terridge[nixyz] * RINAMP
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local grad = (TERCEN - y) / TERSCA
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local denridge = ridge + grad
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local terblen = math.max((1 - math.abs(nvals_range[nixz])), 0)
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local n_base = nvals_base[nixz]
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local terblen = math.max(1 - math.abs(n_base) ^ BASEXP, 0)
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local densitybase = terblen * BASAMP
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+ grad
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local triv = TRIV * (1 - terblen)
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local density = ridge + grad
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+ math.abs(nvals_terrough[nixyz] * terblen + nvals_terrsmoo[nixyz] * (1 - terblen)) ^ TEREXP * TERAMP
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if density >= TSTONE then
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local tsand = TSAND * (1 - terblen)
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local tstone = TSTONE -- by height not terblen
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local canexp = 1.2
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local density = densitybase
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+ math.abs(nvals_rough[nixyz] * terblen + nvals_smooth[nixyz] * (1 - terblen)) ^ canexp * CANAMP
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local n_biome = nvals_biome[nixz]
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if density >= tstone then -- stone
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if n_biome > 0.5 then
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data[vi] = c_wsredstone
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else
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data[vi] = c_wsstone
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end
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stable[si] = stable[si] + 1
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elseif density >= 0 and density < TSTONE and stable[si] >= 2 then
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data[vi] = c_sand
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elseif density >= 0 and density < tstone and stable[si] >= 2 then -- fine materials
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if densitybase >= tsand or y <= YWAT + math.random(3) then
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data[vi] = c_sand -- riverbed, seabed
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else
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if n_biome > 0.5 then
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data[vi] = c_desand
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elseif density > TDIRT then
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data[vi] = c_dirt
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elseif n_biome < -0.5 then
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data[vi] = c_snowblock
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else
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data[vi] = c_wsgrass
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end
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end
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elseif y <= YWAT then -- sea level water
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data[vi] = c_water
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stable[si] = 0
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elseif denridge >= triv then -- river water
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elseif densitybase >= triv then -- river water
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data[vi] = c_wswater
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stable[si] = 0
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else
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@ -229,5 +276,5 @@ minetest.register_on_generated(function(minp, maxp, seed)
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vm:calc_lighting()
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vm:write_to_map(data)
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local chugent = math.ceil((os.clock() - t1) * 1000)
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print ("[noise23] "..chugent.." ms")
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print ("[watershed] "..chugent.." ms")
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end)
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