273 lines
7.3 KiB
Lua
273 lines
7.3 KiB
Lua
-- intersecting 0.2.2 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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-- stable sand, drops default
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-- luxore in stone, above stone, craftable to lights
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-- TODO
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-- integrate caves as cava = math.abs(n_weba) > CAVT
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-- include lava, to replace v6 cavegen
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-- Parameters
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local TFIS = 0.02 -- Fissure and tunnel width
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local LUX = true -- Enable luxore
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local LUXCHA = 1 / 8 ^ 3 -- Luxore chance per stone node.
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-- 3D noise for fissure a
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local np_weba = {
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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 = 5900033,
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octaves = 3,
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persist = 0.5
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}
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-- 3D noise for fissure b
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local np_webb = {
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offset = 0,
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scale = 1,
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spread = {x=191, y=191, z=191},
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seed = 33,
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octaves = 3,
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persist = 0.5
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}
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-- 3D noise for fissure c
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local np_webc = {
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offset = 0,
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scale = 1,
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spread = {x=190, y=190, z=190},
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seed = -18000001,
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octaves = 3,
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persist = 0.5
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}
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-- 3D noise for tunnel/fissure combinations
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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},
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seed = -181,
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octaves = 1,
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persist = 0
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}
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-- Stuff
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intersecting = {}
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-- Nodes
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minetest.register_node("intersecting:sand", {
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description = "Stable sand",
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tiles = {"default_sand.png"},
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is_ground_content = false,
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groups = {crumbly=2, sand=1},
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drop = "default:sand",
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sounds = default.node_sound_sand_defaults(),
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})
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minetest.register_node("intersecting:luxoff", {
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description = "Dark Lux Ore",
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tiles = {"intersecting_luxore.png"},
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light_source = 14,
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groups = {cracky=3},
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sounds = default.node_sound_glass_defaults(),
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})
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minetest.register_node("intersecting:luxore", {
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description = "Lux Ore",
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tiles = {"intersecting_luxore.png"},
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light_source = 14,
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groups = {cracky=3},
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sounds = default.node_sound_glass_defaults(),
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})
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minetest.register_node("intersecting:light", {
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description = "Light",
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tiles = {"intersecting_light.png"},
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light_source = 14,
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groups = {cracky=3,oddly_breakable_by_hand=3},
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sounds = default.node_sound_glass_defaults(),
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})
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-- Crafting.
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minetest.register_craft({
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output = "intersecting:light 8",
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recipe = {
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{"default:glass", "default:glass", "default:glass"},
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{"default:glass", "intersecting:luxore", "default:glass"},
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{"default:glass", "default:glass", "default:glass"},
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},
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})
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minetest.register_craft({
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output = "intersecting:light 8",
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recipe = {
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{"default:obsidian_glass", "default:obsidian_glass", "default:obsidian_glass"},
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{"default:obsidian_glass", "intersecting:luxore", "default:obsidian_glass"},
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{"default:obsidian_glass", "default:obsidian_glass", "default:obsidian_glass"},
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},
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})
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-- ABM spread luxore light
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minetest.register_abm({
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nodenames = {"intersecting:luxoff"},
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interval = 7,
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chance = 1,
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action = function(pos, node)
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minetest.remove_node(pos)
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minetest.place_node(pos, {name="intersecting:luxore"})
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end,
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})
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-- On generated function
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minetest.register_on_generated(function(minp, maxp, seed)
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if minp.y > 48 then
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return
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end
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local t1 = os.clock()
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local x1 = maxp.x
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local y1 = maxp.y
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local z1 = maxp.z
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local x0 = minp.x
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local y0 = minp.y
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local z0 = minp.z
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print ("[intersecting] chunk minp ("..x0.." "..y0.." "..z0..")")
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local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
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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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local c_air = minetest.get_content_id("air")
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local c_water = minetest.get_content_id("default:water_source")
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local c_dirt = minetest.get_content_id("default:dirt")
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local c_grass = minetest.get_content_id("default:dirt_with_grass")
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local c_tree = minetest.get_content_id("default:tree")
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local c_jtree = minetest.get_content_id("default:jungletree")
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local c_stone = minetest.get_content_id("default:stone")
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local c_desertstone = minetest.get_content_id("default:desert_stone")
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local c_sand = minetest.get_content_id("intersecting:sand")
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local c_luxore = minetest.get_content_id("intersecting:luxoff")
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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 nvals_weba = minetest.get_perlin_map(np_weba, chulens):get3dMap_flat(minposxyz)
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local nvals_webb = minetest.get_perlin_map(np_webb, chulens):get3dMap_flat(minposxyz)
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local nvals_webc = minetest.get_perlin_map(np_webc, chulens):get3dMap_flat(minposxyz)
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local nvals_biome = minetest.get_perlin_map(np_biome, chulens):get3dMap_flat(minposxyz)
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local cavbel = {}
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local stobel = {}
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local nixyz = 1
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for z = z0, z1 do -- for each xy plane progressing northwards
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for y = y0, y1 do -- for each x row progressing upwards
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local vi = area:index(x0, y, z)
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local via = area:index(x0, y+1, z)
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local vin = area:index(x0, y, z+1)
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local vis = area:index(x0, y, z-1)
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local vie = vi + 1
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local viw = vi - 1
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for x = x0, x1 do -- for each node do
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local ti = x - x0 + 1
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local nodid = data[vi]
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local nodida = data[via]
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local nodide = data[vie]
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local nodidw = data[viw]
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local nodidn = data[vin]
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local nodids = data[vis]
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local watadj = nodida == c_water or nodidw == c_water or nodide == c_water or nodidn == c_water or nodids == c_water
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if nodid ~= c_air and nodid ~= c_water and not watadj
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and not ((nodid == c_sand or nodid == c_dirt or nodid == c_grass) and y <= 2) then
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local weba = math.abs(nvals_weba[nixyz]) < TFIS
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local webb = math.abs(nvals_webb[nixyz]) < TFIS
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local webc = math.abs(nvals_webc[nixyz]) < TFIS
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local n_biome = nvals_biome[nixyz]
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local void
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if n_biome < -0.65 then -- 2 tun ac ab
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void = (weba and webc) or (weba and webb)
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elseif n_biome < -0.4 then -- 2 tun bc ab
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void = (webb and webc) or (weba and webb)
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elseif n_biome < -0.15 then -- 2 tun bc ac
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void = (webb and webc) or (weba and webc)
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elseif n_biome < -0.05 then -- 1 fis 1 tun
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void = webb or (weba and webc)
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elseif n_biome < 0.05 then -- 2 fis
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void = weba or webb
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elseif n_biome < 0.15 then -- 1 fis 1 tun
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void = weba or (webb and webc)
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elseif n_biome < 0.4 then -- 2 tun
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void = (weba and webc) or (webb and webc)
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elseif n_biome < 0.65 then -- 2 tun
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void = (weba and webc) or (webb and webc)
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else -- 2 tun bc ac
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void = (webb and webc) or (weba and webc)
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end
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if void then
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data[vi] = c_air
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cavbel[ti] = 1
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stobel[ti] = 0
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if nodid == c_tree or nodid == c_jtree then
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for j = -12, 12 do
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local vit = area:index(x, y+j, z)
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if data[vit] == c_tree or data[vit] == c_jtree then
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data[vit] = c_air
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end
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end
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end
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else
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cavbel[ti] = 0
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if LUX and nodid == c_stone or nodid == c_desertstone then
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if math.random() < LUXCHA and stobel[ti] == 1 and y > y0 then
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data[vi] = c_luxore
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end
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stobel[ti] = 1
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end
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end
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else
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if (nodid == c_water or watadj) and cavbel[ti] == 1 then
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for j = -1, -16, -1 do
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local vip = area:index(x, y+j, z)
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if data[vip] == c_air then
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data[vip] = c_sand
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end
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end
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end
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cavbel[ti] = 0
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stobel[ti] = 0
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end
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nixyz = nixyz + 1
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vi = vi + 1
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via = via + 1
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vin = vin + 1
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vis = vis + 1
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vie = vie + 1
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viw = viw + 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:set_lighting({day=0, night=0})
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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 ("[intersecting] "..chugent.." ms")
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end)
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