150 lines
3.3 KiB
Lua
150 lines
3.3 KiB
Lua
-- noisegrid 0.1.0 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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-- Parameters
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local TERSCA = 40
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local TROAD = 0.1
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local TVAL = 0.12
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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 = 5,
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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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-- 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 ~= -32 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_sand = minetest.get_content_id("default:sand")
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local c_obsidian = minetest.get_content_id("default:obsidian")
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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 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[6360]) < TROAD then
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nroad = true
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end
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if math.abs(nvals_base[3201]) < TROAD then
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wroad = true
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end
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if math.abs(nvals_base[3240]) < TROAD then
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cross = true
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end
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if math.abs(nvals_base[3280]) < TROAD then
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eroad = true
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end
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if math.abs(nvals_base[40]) < 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_absbase = math.abs(nvals_base[nixz])
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if n_absbase <= TVAL then
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ysurf = 1
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else
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ysurf = 1 + math.floor((n_absbase - TVAL) * TERSCA)
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end
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if y == 1 then
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if xr >= 36 and xr <= 43 and zr >= 36 and zr <= 43 -- centre
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and (nroad or eroad or sroad or wroad) and cross then
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data[vi] = c_obsidian
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elseif xr >= 36 and xr <= 43 and zr >= 44 -- north
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and nroad and cross then
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data[vi] = c_obsidian
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elseif xr >= 44 and zr >= 36 and zr <= 43 -- east
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and eroad and cross then
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data[vi] = c_obsidian
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elseif xr >= 36 and xr <= 43 and zr <= 35 -- south
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and sroad and cross then
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data[vi] = c_obsidian
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elseif xr <= 35 and zr >= 36 and zr <= 43 -- west
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and wroad and cross then
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data[vi] = c_obsidian
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else
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data[vi] = c_sand
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end
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elseif y <= ysurf then
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data[vi] = c_sand
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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) |