Tune parameters. Link trees to soil depth
Mat
parent
b1fee3d90c
commit
8ee8c4f0b0
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@ -82,3 +82,46 @@ minetest.register_abm({
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vm:update_map()
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end,
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})
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-- Spawn flat facing south
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function riverdev_flatsouth(pos)
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local x = pos.x
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local y = pos.y
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local z = pos.z
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local c_air = minetest.get_content_id("air")
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local c_tree = minetest.get_content_id("default:tree")
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local vm = minetest.get_voxel_manip()
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local pos1 = {x=x-2, y=y-5, z=z-2}
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local pos2 = {x=x+9, y=y+4, z=z+9}
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local emin, emax = vm:read_from_map(pos1, pos2)
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local area = VoxelArea:new({MinEdge=emin, MaxEdge=emax})
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local data = vm:get_data()
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for j = -5, 4 do
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for k = -2, 9 do
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local vi = area:index(x-2, y+j, z+k)
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for i = -2, 9 do
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local nodid = data[vi]
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if nodid == c_tree then
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data[vi] = c_air
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--for j = -2, 2 do
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--for k = -2, 2 do
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--for i = -2, 2 do
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--end
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--end
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--end
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end
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vi = vi + 1
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end
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end
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end
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vm:set_data(data)
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vm:write_to_map()
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vm:update_map()
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local path = minetest.get_modpath("riverdev") .. "/schems/flat.mts"
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minetest.place_schematic({x=x, y=y, z=z}, path, 270, nil, false)
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end
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95
init.lua
95
init.lua
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@ -12,25 +12,25 @@ local YSAND = 4 -- Top of beach y
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local YTER = -64 -- Deepest seabed y
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local TERSCA = 512 -- Terrain vertical scale in nodes
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local BASAMP = 0.3 -- Base amplitude. Ridge network structure
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local MIDAMP = 0.05 -- Mid amplitude. River valley structure
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local TERAMP = 0.65 -- 3D noise terrain amplitude. Path valley structure
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local BASAMP = 0.3 -- Base amplitude relative to 3D noise amplitude. Ridge network structure
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local MIDAMP = 0.05 -- Mid amplitude relative to 3D noise amplitude. River valley structure
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local TSTONE = 0.02
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local TRIVER = -0.018
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local TRSAND = -0.02
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local TPFLO = 0.02 -- Width of flora clearing around paths
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local TPFLO = 0.03 -- Width of flora clearing around paths
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local APPCHA = 1 / 4 ^ 2 -- Appletree maximum chance per grass node. 1 / n ^ 2 where n = average minimum distance between flora
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local GRACHA = 1 / 4 ^ 2 -- Grasses maximum chance per grass node
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-- 3D noise for terrain
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-- 3D noise for highland terrain
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local np_terrain = {
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offset = 0,
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scale = 1,
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spread = {x=384, y=192, z=384},
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spread = {x=192, y=192, z=192},
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seed = 5900033,
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octaves = 5,
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octaves = 4,
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persist = 0.67
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}
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@ -39,7 +39,7 @@ local np_terrain = {
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local np_mid = {
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offset = 0,
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scale = 1,
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spread = {x=512, y=512, z=512},
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spread = {x=768, y=768, z=768},
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seed = 85546,
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octaves = 5,
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persist = 0.4
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@ -50,9 +50,9 @@ local np_mid = {
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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=2048, y=2048, z=2048},
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spread = {x=3072, y=3072, z=3072},
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seed = -990054,
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octaves = 3,
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octaves = 2,
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persist = 0.4
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}
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@ -61,9 +61,9 @@ local np_base = {
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local np_patha = {
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offset = 0,
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scale = 1,
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spread = {x=512, y=512, z=512},
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spread = {x=768, y=768, z=768},
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seed = 7000023,
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octaves = 3,
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octaves = 4,
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persist = 0.4
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}
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@ -72,9 +72,9 @@ local np_patha = {
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local np_pathb = {
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offset = 0,
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scale = 1,
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spread = {x=512, y=512, z=512},
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spread = {x=768, y=768, z=768},
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seed = 23,
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octaves = 3,
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octaves = 4,
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persist = 0.4
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}
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@ -83,10 +83,21 @@ local np_pathb = {
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local np_tree = {
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offset = 0,
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scale = 1,
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spread = {x=256, y=256, z=256},
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spread = {x=192, y=192, z=192},
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seed = 133338,
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octaves = 3,
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persist = 0.6
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persist = 0.5
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}
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-- 2D noise for grasses
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local np_grass = {
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offset = 0,
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scale = 1,
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spread = {x=192, y=192, z=192},
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seed = 133,
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octaves = 2,
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persist = 0.5
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}
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-- Stuff
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@ -126,6 +137,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
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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_wood = minetest.get_content_id("default:wood")
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local c_grass5 = minetest.get_content_id("default:grass_5")
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local c_dirt = minetest.get_content_id("riverdev:dirt")
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local c_grass = minetest.get_content_id("riverdev:grass")
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@ -149,6 +161,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
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local nvals_patha = minetest.get_perlin_map(np_patha, chulensxz):get2dMap_flat(minposxz)
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local nvals_pathb = minetest.get_perlin_map(np_pathb, chulensxz):get2dMap_flat(minposxz)
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local nvals_tree = minetest.get_perlin_map(np_tree, chulensxz):get2dMap_flat(minposxz)
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local nvals_grass = minetest.get_perlin_map(np_grass, chulensxz):get2dMap_flat(minposxz)
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local viu = area:index(x0, y0-1, z0)
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local ungen = data[viu] == c_ignore
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@ -159,16 +172,17 @@ minetest.register_on_generated(function(minp, maxp, seed)
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local under = {}
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for z = z0 - 1, z1 do
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for y = y0 - 1, y1 + 1 do
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local si = 1
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local vi = area:index(x0-1, y, z)
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local viu = area:index(x0-1, y-1, z)
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local n_xprepatha = false
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local n_xprepathb = false
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for x = x0 - 1, x1 do
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local si = x - x0 + 2
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local nodid = data[vi]
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local nodidu = data[viu]
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local chunkxz = x >= x0 and z >= z0
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local n_tree = math.min(math.max(nvals_tree[nixz], 0), 1)
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local n_grass = math.min(math.max(nvals_grass[nixz], 0), 1)
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local n_patha = nvals_patha[nixz]
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local n_abspatha = math.abs(n_patha)
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@ -186,9 +200,9 @@ minetest.register_on_generated(function(minp, maxp, seed)
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local grad = (YTER - y) / TERSCA
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local densitybase = n_invbase * BASAMP + grad
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local densitymid = n_absmid * MIDAMP + densitybase
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local density = n_terrain * n_invbase * n_absmid * n_abspatha ^ 1.2 * n_abspathb ^ 1.2 * TERAMP + densitymid
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local density = n_terrain * n_invbase * n_absmid * n_abspatha ^ 1.5 * n_abspathb ^ 1.5 + densitymid
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local tstone = TSTONE * (1 + grad * 2)
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local tstone = TSTONE * (1 + grad * 3)
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local triver = TRIVER * n_absbase
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local trsand = TRSAND * n_absbase
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@ -247,7 +261,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
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stable[si] = 0
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under[si] = 0
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elseif density >= 0 and density < tstone and stable[si] >= 2 then -- fine materials
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if y <= YSAND + math.random() * 2
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if y <= YSAND + math.random(0, 1)
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or densitybase >= trsand + math.random() * 0.002 then
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data[vi] = c_sand
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under[si] = 2
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@ -268,12 +282,16 @@ minetest.register_on_generated(function(minp, maxp, seed)
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stable[si] = 0
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under[si] = 0
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elseif density < 0 and under[si] ~= 0 then -- air above surface
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if under[si] == 1 and nodidu ~= c_path then
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if math.random() < APPCHA * n_tree
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if under[si] == 1 and nodid ~= c_path and nodidu ~= c_path
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and nodid ~= c_wood and nodidu ~= c_wood then
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if math.random() < APPCHA * n_tree and tstone > 0.005
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and n_abspatha > TPFLO and n_abspathb > TPFLO then
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riverdev_appletree(x, y, z, area, data)
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else
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data[viu] = c_grass
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if math.random() < GRACHA * n_grass then -- grasses
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data[vi] = c_grass5
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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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@ -282,9 +300,35 @@ minetest.register_on_generated(function(minp, maxp, seed)
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stable[si] = 0
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under[si] = 0
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end
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elseif chunkxz and y == y1 + 1 then -- overgeneration, detect surface, add surface nodes
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if density < 0 and under[si] ~= 0 then
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if under[si] == 1 and nodidu ~= c_path then
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elseif chunkxz and y == y1 + 1 then -- overgeneration
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if y > YSAND
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and ((not wood and density < 0 and under[si] ~= 0)
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or (wood and densitybase > trsand * 2 and densitybase < trsand * 2 + 0.002))
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and (((n_patha >= 0 and n_xprepatha < 0) or (n_patha < 0 and n_xprepatha >= 0)) -- patha
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or ((n_patha >= 0 and n_zprepatha < 0) or (n_patha < 0 and n_zprepatha >= 0))
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or ((n_pathb >= 0 and n_xprepathb < 0) or (n_pathb < 0 and n_xprepathb >= 0)) -- pathb
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or ((n_pathb >= 0 and n_zprepathb < 0) or (n_pathb < 0 and n_zprepathb >= 0))) then
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if wood and math.random() < 0.1 then
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local vi = area:index(x, y-2, z)
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for j = 1, 16 do
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data[vi] = c_wood
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vi = vi - 112
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end
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end
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for k = -1, 1 do
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local vi = area:index(x-1, y-1, z+k)
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for i = -1, 1 do
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if wood then
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data[vi] = c_wood
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else
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data[vi] = c_path
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end
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vi = vi + 1
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end
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end
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elseif density < 0 and under[si] ~= 0 then
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if under[si] == 1 and nodid ~= c_path and nodidu ~= c_path
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and nodid ~= c_wood and nodidu ~= c_wood then
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data[viu] = c_grass
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end
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end
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@ -296,6 +340,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
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nixz = nixz + 1
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vi = vi + 1
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viu = viu + 1
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si = si + 1
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end
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nixz = nixz - sidelen - 1
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end
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