Remove tunnel expansion. Add caves from 5 3D noises. Jungletree auto-limits height near y=47. Add fissures. 3d noise boulders, some sandstone
paramat
parent
86b1330e3d
commit
eae273e641
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@ -1,4 +1,4 @@
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riverdev 0.5.5 by paramat
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riverdev 0.5.6 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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@ -139,11 +139,11 @@ function riverdev_snowypine(x, y, z, area, data)
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data[vilaa] = c_snowblock
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end
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function riverdev_jungletree(x, y, z, area, data)
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function riverdev_jungletree(x, y, z, area, data, y1)
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local c_juntree = minetest.get_content_id("default:jungletree")
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local c_junleaf = minetest.get_content_id("riverdev:jungleleaf")
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local c_vine = minetest.get_content_id("riverdev:vine")
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local top = math.random(17,23)
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local top = math.min(math.random(17,23), y1 +16 - y) -- avoid chopped trees
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local branch = math.floor(top * 0.6)
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for j = -5, top do
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if j == top or j == top - 1 or j == branch + 1 or j == branch + 2 then
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@ -183,18 +183,34 @@ function riverdev_jungletree(x, y, z, area, data)
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end
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function riverdev_boulder(x, y, z, area, data)
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local c_stone = minetest.get_content_id("riverdev:stone")
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local dx = math.random() * 15 + 1
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local dy = math.random() * 15 + 1
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local dz = math.random() * 15 + 1
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local np_boulder = {
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offset = 0,
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scale = 1,
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spread = {x=16, y=16, z=16},
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seed = 5933,
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octaves = 2,
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persist = 0.67
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}
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local chulens = {x=17, y=17, z=17}
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local minpos = {x=x-8, y=y-8, z=z-8}
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local nvals_boulder = minetest.get_perlin_map(np_boulder, chulens):get3dMap_flat(minpos)
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local c_boulder
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if math.random() < 0.2 then
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c_boulder = minetest.get_content_id("default:sandstone")
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else
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c_boulder = minetest.get_content_id("riverdev:stone")
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end
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local avrad = 2 + math.random() * 3
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local ni = 1
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for k = -8, 8 do
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for j = -8, 8 do
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local vi = area:index(x-8, y+j, z+k)
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for i = -8, 8 do
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if (i ^ 2 * dx + j ^ 2 * dy + k ^ 2 * dz) ^ 0.5 < 8 then
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data[vi] = c_stone
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if (i ^ 2 + j ^ 2 + k ^ 2) ^ 0.5 < avrad * (1 + nvals_boulder[ni] * 0.7) then
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data[vi] = c_boulder
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end
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vi = vi + 1
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ni = ni + 1
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end
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end
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end
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112
init.lua
112
init.lua
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@ -1,14 +1,22 @@
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-- riverdev 0.5.5 by paramat
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-- riverdev 0.5.6 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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-- base terrain 2 octaves
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-- update depends
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-- remove tunnel expansion
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-- add caves using 5 noises
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-- jungletrees auto-limit height to avoid chop
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-- add fissures
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-- 3d noise boulders, some sandstone
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-- TODO
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-- regeneration command: use of mapgen loop function
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-- noise controlled canyon shape exponent: widen river at places to create lakes?
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-- update snowypines
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-- coloured stone: desertstone orange sandstone green blue violet
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-- inclined strata with 3d biomes of coloured stone mixes
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-- ores in strata
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-- add humidity from water distance
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-- add all watershed biomes
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-- gravel in tunnels/caves
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-- Parameters
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@ -16,7 +24,7 @@ local YMIN = -33000 -- Y limits of realm generation
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local YMAX = 1024
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local YWATER = 1 -- Water surface y
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local YSAND = 4 -- Top of beach y
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local YTER = -64 -- Deepest seabed y
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local YTER = -92 -- Deepest seabed y
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local YPINE = 47 -- Pines above this y
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local TERSCA = 512 -- Terrain vertical scale in nodes
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@ -27,12 +35,16 @@ local TSTONE = 0.02 -- Depth of stone under surface
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local TRIVER = -0.018 -- River depth
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local TRSAND = -0.02 -- Depth of river sand
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local TPFLO = 0.02 -- Width of flora clearing around paths
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local TTUN = 0.02 -- Tunnel/fissure width
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local TMAG = 0.01 -- Magma tunnel width
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local TOBS = 0.02 -- Obsidian tube width
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local TTUN = 0.02 -- Tunnel width
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local TFIS = 0.005 -- Fissure width
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local TCAV = 1 -- Cavern threshold
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local TMAG = 0.015 -- Magma tunnel width
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local TOBS = 0.025 -- Obsidian tube width
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local ORECHA = 1 / 5 ^ 3 -- Ore chance per stone node. 1 / n ^ 3 where n = average distance between ores
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local BOLCHA = 1 / 127 ^ 2 -- Boulder maximum chance per grass node. 1 / n ^ 2 where n = average minimum distance between flora
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local ORECHA = 1 / 5 ^ 3 -- Ore chance per stone node
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-- 1 / n ^ 3 where n = average distance between ores
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local BOLCHA = 1 / 32 ^ 2 -- Boulder maximum chance per grass node.
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-- 1 / n ^ 2 where n = average minimum distance between flora
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local APPCHA = 1 / 5 ^ 2 -- Appletree maximum chance per grass node
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local PINCHA = 1 / 6 ^ 2 -- Pinetree maximum chance per grass node
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local JUNCHA = 1 / 4 ^ 2 -- Jungletree maximum chance per grass node
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@ -70,8 +82,8 @@ local np_base = {
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scale = 1,
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spread = {x=3072, y=3072, z=3072},
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seed = -990054,
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octaves = 2,
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persist = 0.4
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octaves = 3,
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persist = 0.33
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}
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-- 2D noises for patha / top terrain
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@ -118,17 +130,6 @@ local np_tree = {
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persist = 0.6
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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=384, y=384, z=384},
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seed = 133,
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octaves = 3,
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persist = 0.6
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}
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-- 3D noises for tunnels
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local np_weba = {
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@ -169,6 +170,28 @@ local np_webd = {
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persist = 0.4
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}
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-- 3D noise for fissures
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local np_fissure = {
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offset = 0,
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scale = 1,
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spread = {x=768, y=1536, z=768},
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seed = -2332339,
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octaves = 6,
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persist = 0.4
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}
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-- 3D noise for rock strata inclination
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local np_strata = {
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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 = 92219,
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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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dofile(minetest.get_modpath("riverdev").."/functions.lua")
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@ -176,7 +199,8 @@ dofile(minetest.get_modpath("riverdev").."/nodes.lua")
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-- Mapgen functions
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local function riverdev_pathbrush(x, y, z, area, data, y0, wood, emerlen, stable, under, si)
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local function riverdev_pathbrush(x, y, z, area, data,
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y0, wood, emerlen, stable, under, si)
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local c_stone = minetest.get_content_id("riverdev:stone")
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local c_path = minetest.get_content_id("riverdev:path")
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local c_wood = minetest.get_content_id("default:junglewood")
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@ -213,7 +237,8 @@ local function riverdev_pathbrush(x, y, z, area, data, y0, wood, emerlen, stable
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under[si] = 0
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end
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local function riverdev_surface(x, y, z, area, data, vi, viu, n_abspatha, n_abspathb, n_tree, n_grass, n_temp, under, si)
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local function riverdev_surface(x, y, z, area, data, y1, vi, viu,
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n_abspatha, n_abspathb, n_tree, n_grass, n_temp, under, si)
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local c_grass = minetest.get_content_id("riverdev:grass")
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local c_grass5 = minetest.get_content_id("default:grass_5")
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local c_snowblock = minetest.get_content_id("default:snowblock")
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@ -252,7 +277,7 @@ local function riverdev_surface(x, y, z, area, data, vi, viu, n_abspatha, n_absp
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elseif under[si] == 4 then -- rainforest
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if math.random() < JUNCHA
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and n_abspatha > TPFLO / 2 and n_abspathb > TPFLO / 2 then
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riverdev_jungletree(x, y, z, area, data)
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riverdev_jungletree(x, y, z, area, data, y1)
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else
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data[viu] = c_grass
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if math.random() < GRACHA then
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@ -326,6 +351,8 @@ minetest.register_on_generated(function(minp, maxp, seed)
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local nvals_webb = minetest.get_perlin_map(np_webb, chulensxyz):get3dMap_flat(minposxyz)
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local nvals_webc = minetest.get_perlin_map(np_webc, chulensxyz):get3dMap_flat(minposxyz)
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local nvals_webd = minetest.get_perlin_map(np_webd, chulensxyz):get3dMap_flat(minposxyz)
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local nvals_strata = minetest.get_perlin_map(np_strata, chulensxyz):get3dMap_flat(minposxyz)
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local nvals_fissure = minetest.get_perlin_map(np_fissure, chulensxyz):get3dMap_flat(minposxyz)
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local nvals_mid = minetest.get_perlin_map(np_mid, chulensxz):get2dMap_flat(minposxz)
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local nvals_base = minetest.get_perlin_map(np_base, chulensxz):get2dMap_flat(minposxz)
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@ -333,7 +360,6 @@ minetest.register_on_generated(function(minp, maxp, seed)
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local nvals_pathb = minetest.get_perlin_map(np_pathb, chulensxz):get2dMap_flat(minposxz)
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local nvals_temp = minetest.get_perlin_map(np_temp, 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 noiset = math.ceil((os.clock() - t0) * 1000)
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--print ("[riverdev] noise "..noiset.." ms")
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@ -359,7 +385,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
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local n_temp = nvals_temp[nixz]
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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_grass = math.min(math.max(-nvals_tree[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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@ -369,13 +395,15 @@ minetest.register_on_generated(function(minp, maxp, seed)
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local n_abspathb = math.abs(n_pathb)
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local n_zprepathb = nvals_pathb[(nixz - overlen)]
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local n_absweba = math.abs(nvals_weba[nixyz])
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local n_abswebb = math.abs(nvals_webb[nixyz])
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local n_abswebc = math.abs(nvals_webc[nixyz])
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local n_abswebd = math.abs(nvals_webd[nixyz])
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local webexpc = 0.5 * math.max(n_abswebc - 0.8, 0)
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local webexpd = 0.5 * math.max(n_abswebd - 0.8, 0)
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local weba = math.abs(nvals_weba[nixyz]) < TTUN + webexpc
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local webb = math.abs(nvals_webb[nixyz]) < TTUN + webexpd
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local novoid = not (weba and webb)
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local n_absfissure = math.abs(nvals_fissure[nixyz])
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local novoid = not ((n_absweba < TTUN and n_abswebb < TTUN)
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or n_absweba > TCAV or n_abswebb > TCAV
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or n_abswebc > TCAV or n_abswebd > TCAV
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or n_absfissure < TFIS or n_absfissure > TCAV)
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local n_terrain = (nvals_terrain[nixyz] + 2) / 2
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local n_absmid = (math.abs(nvals_mid[nixz])) ^ 0.8
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@ -385,15 +413,17 @@ minetest.register_on_generated(function(minp, maxp, seed)
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local grad = (YTER - y) / TERSCA -- noise gradient
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local densitybase = n_invbase * BASAMP + grad -- ridge surface
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local densitymid = n_absmid * MIDAMP + densitybase -- river valley surface
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local density = n_terrain * n_invbase * n_absmid * n_abspatha ^ 1.5 * n_abspathb ^ 1.5
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local density =
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n_terrain * n_invbase * n_absmid * n_abspatha ^ 1.5 * n_abspathb ^ 1.5
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+ densitymid -- actual surface
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local tstone = TSTONE * (1 + grad * 2)
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local triver = TRIVER * n_absbase
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local trsand = TRSAND * n_absbase
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local wood = densitybase > trsand * 2 and density < 0
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local tobs = TOBS + (density + tstone)
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local n_strata = nvals_strata[nixyz]
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local densitystrata = grad + n_strata * 0.5
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if chunkxz and y == y0 - 1 then -- overgeneration, initialise tables
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under[si] = 0
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@ -416,11 +446,11 @@ minetest.register_on_generated(function(minp, maxp, seed)
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end
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end
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elseif chunkxz and y >= y0 and y <= y1 then -- chunk generation
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if density >= -tstone -- magma/obsidian system
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if density >= -tstone -- magma/obsidian network
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and ((n_abswebc <= TOBS and n_abswebd <= TOBS)
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or (density < tstone and n_abswebc <= tobs and n_abswebd <= tobs)) then
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if n_abswebc < TMAG and n_abswebd < TMAG then
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if density >= tstone * 2 then -- magma
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if density >= TSTONE * 2 then -- magma
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data[vi] = c_lava
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stable[si] = 0
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under[si] = 0
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@ -479,11 +509,11 @@ minetest.register_on_generated(function(minp, maxp, seed)
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data[vi] = c_dirt -- deciduous forest/grassland
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under[si] = 2
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end
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elseif y <= YWATER and density < tstone then -- sea water
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elseif y <= YWATER and density < tstone and nodid ~= c_stone then -- sea water
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data[vi] = c_water
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stable[si] = 0
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under[si] = 0
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elseif densitybase >= triver and density < tstone then -- river water
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elseif densitybase >= triver and density < tstone and nodid ~= c_stone then -- river water
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if y == YWATER + 1 then
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data[vi] = c_mixwater
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else
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@ -497,7 +527,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
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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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riverdev_surface(x, y, z, area, data, vi, viu,
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riverdev_surface(x, y, z, area, data, y1, vi, viu,
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n_abspatha, n_abspathb, n_tree, n_grass, n_temp, under, si)
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stable[si] = 0
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@ -524,7 +554,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
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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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riverdev_surface(x, y, z, area, data, vi, viu,
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riverdev_surface(x, y, z, area, data, y1, vi, viu,
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n_abspatha, n_abspathb, n_tree, n_grass, n_temp, under, si)
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end
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