254 lines
6.3 KiB
Lua
254 lines
6.3 KiB
Lua
-- noisegrid 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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-- Add black and white road nodes, crossings, paths. 256n mountains.
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-- Parameters
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local YVAL = 5
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local YSAND = 3
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local TERSCA = 192
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local TROAD = 0.1
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local TVAL = 0.11
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-- 2D noise for base terrain
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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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seed = -9111,
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octaves = 6,
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persist = 0.6
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}
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-- Stuff
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noisegrid = {}
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-- Nodes
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minetest.register_node("noisegrid:grass", {
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description = "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("noisegrid:dirt", {
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description = "Dirt",
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tiles = {"default_dirt.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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})
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minetest.register_node("noisegrid:stone", {
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description = "Stone",
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tiles = {"default_stone.png"},
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groups = {cracky=3},
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drop = "default:cobble",
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sounds = default.node_sound_stone_defaults(),
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})
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minetest.register_node("noisegrid:roadblack", {
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description = "Road Black",
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tiles = {"noisegrid_roadblack.png"},
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groups = {cracky=2},
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sounds = default.node_sound_stone_defaults(),
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})
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minetest.register_node("noisegrid:roadwhite", {
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description = "Road White",
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tiles = {"noisegrid_roadwhite.png"},
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groups = {cracky=2},
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sounds = default.node_sound_stone_defaults(),
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})
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minetest.register_node("noisegrid:path", {
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description = "Path",
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tiles = {"noisegrid_path.png"},
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groups = {cracky=2},
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sounds = default.node_sound_stone_defaults(),
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})
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-- Set mapgen parameters
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minetest.register_on_mapgen_init(function(mgparams)
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minetest.set_mapgen_params({mgname="singlenode"})
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end)
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-- Spawn player
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function spawnplayer(player)
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player:setpos({x=0, y=2, z=0})
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end
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minetest.register_on_newplayer(function(player)
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spawnplayer(player)
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end)
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minetest.register_on_respawnplayer(function(player)
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spawnplayer(player)
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return true
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end)
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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 < -272 or minp.y > 208 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 ("[noisegrid] 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_grass = minetest.get_content_id("noisegrid:grass")
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local c_dirt = minetest.get_content_id("noisegrid:dirt")
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local c_stone = minetest.get_content_id("noisegrid:stone")
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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_roadblack = minetest.get_content_id("noisegrid:roadblack")
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local c_roadwhite = minetest.get_content_id("noisegrid:roadwhite")
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local c_path = minetest.get_content_id("noisegrid:path")
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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_base = minetest.get_perlin_map(np_base, chulens):get2dMap_flat(minposxz)
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local cross = false
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local nroad = false
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local eroad = false
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local sroad = false
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local wroad = false
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if math.abs(nvals_base[6359]) < TROAD then
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nroad = true
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end
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if math.abs(nvals_base[3121]) < TROAD then
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wroad = true
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end
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if math.abs(nvals_base[3160]) < TROAD then
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cross = true
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end
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if math.abs(nvals_base[3200]) < TROAD then
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eroad = true
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end
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if math.abs(nvals_base[39]) < TROAD then
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sroad = true
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end
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local nixz = 1
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for z = z0, z1 do
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for y = y0, y1 do
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local vi = area:index(x0, y, z)
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for x = x0, x1 do
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local xr = x - x0
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local zr = z - z0
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local ysurf
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local n_base = nvals_base[nixz]
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local n_absbase = math.abs(n_base)
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if n_base > TVAL then
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ysurf = YVAL + math.floor((n_base - TVAL) * TERSCA)
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elseif n_base < -TVAL then
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ysurf = YVAL - math.floor((-TVAL - n_base) * TERSCA)
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else
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ysurf = YVAL
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end
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if y == YVAL and n_absbase <= TVAL then
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if xr >= 36 and xr <= 42 and zr >= 36 and zr <= 42 -- centre
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and (nroad or eroad or sroad or wroad) and cross then
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data[vi] = c_roadblack
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elseif xr >= 34 and xr <= 44 and zr >= 43 -- north
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and nroad and cross then
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if xr == 39
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or (zr <= 44 and (xr == 37 or xr == 41)) then
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data[vi] = c_roadwhite
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elseif xr >= 36 and xr <= 42 then
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data[vi] = c_roadblack
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else
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data[vi] = c_path
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end
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elseif xr >= 43 and zr >= 34 and zr <= 44 -- east
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and eroad and cross then
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if zr == 39
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or (xr <= 44 and (zr == 37 or zr == 41)) then
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data[vi] = c_roadwhite
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elseif zr >= 36 and zr <= 42 then
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data[vi] = c_roadblack
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else
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data[vi] = c_path
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end
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elseif xr >= 34 and xr <= 44 and zr <= 35 -- south
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and sroad and cross then
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if xr == 39
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or (zr >= 34 and (xr == 37 or xr == 41)) then
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data[vi] = c_roadwhite
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elseif xr >= 36 and xr <= 42 then
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data[vi] = c_roadblack
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else
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data[vi] = c_path
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end
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elseif xr <= 35 and zr >= 34 and zr <= 44 -- west
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and wroad and cross then
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if zr == 39
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or (xr >= 34 and (zr == 37 or zr == 41)) then
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data[vi] = c_roadwhite
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elseif zr >= 36 and zr <= 42 then
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data[vi] = c_roadblack
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else
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data[vi] = c_path
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end
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elseif xr >= 34 and xr <= 44 and zr >= 34 and zr <= 44
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and cross then
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data[vi] = c_path
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else
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data[vi] = c_grass
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end
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elseif y < ysurf - 3 then
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data[vi] = c_stone
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elseif y <= ysurf and y <= YSAND then
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data[vi] = c_sand
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elseif y == ysurf then
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data[vi] = c_grass
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elseif y < ysurf then
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data[vi] = c_dirt
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elseif y <= 1 then
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data[vi] = c_water
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end
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nixz = nixz + 1
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vi = vi + 1
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end
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nixz = nixz - 80
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end
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nixz = nixz + 80
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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 ("[noisegrid] "..chugent.." ms")
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end) |