771 lines
20 KiB
Lua
771 lines
20 KiB
Lua
-- Parameters
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local WALK = true -- Walkable paths
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local YMAXMINP = 48 -- Maximum minp.y of generated chunks
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-- (-32 for default mapgen v6. 48, 128, 208 for higher)
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local HSAMP = 0.85 -- Height select amplitude. Maximum steepness of paths
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local HSOFF = -0.2 -- Height select noise offset.
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-- Bias paths towards base (-) or higher (+) terrain
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local TCOL = 0.3 -- Column noise threshold. Bridge column density
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-- Mapgen v6 parameters
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-- 2D noise for base terrain
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local np_base = {
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offset = -4,
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scale = 20,
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spread = {x = 250, y = 250, z = 250},
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seed = 82341,
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octaves = 5,
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persist = 0.6
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}
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-- 2D noise for higher terrain
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local np_higher = {
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offset = 20,
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scale = 16,
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spread = {x = 500, y = 500, z = 500},
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seed = 85039,
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octaves = 5,
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persist = 0.6
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}
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-- 2D noise for height select
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local np_hselect = {
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offset = 0.5,
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scale = 1,
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spread = {x = 250, y = 250, z = 250},
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seed = 4213,
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octaves = 5,
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persist = 0.4 -- default = 0.69
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}
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-- 2D noise for mud
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local np_mud = {
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offset = 4,
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scale = 2,
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spread = {x = 200, y = 200, z = 200},
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seed = 91013,
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octaves = 3,
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persist = 0.55
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}
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-- Mod path parameters
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-- 2D noise for patha
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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 = 1024, y = 1024, z = 1024},
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seed = 11711,
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octaves = 3,
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persist = 0.4
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}
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-- 2D noise for pathb
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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 = 2048, y = 2048, z = 2048},
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seed = -8017,
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octaves = 4,
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persist = 0.4
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}
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-- 2D noise for pathc
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local np_pathc = {
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offset = 0,
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scale = 1,
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spread = {x = 4096, y = 4096, z = 4096},
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seed = 300707,
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octaves = 5,
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persist = 0.4
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}
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-- 2D noise for pathd
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local np_pathd = {
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offset = 0,
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scale = 1,
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spread = {x = 8192, y = 8192, z = 8192},
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seed = -80033,
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octaves = 6,
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persist = 0.4
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}
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-- 2D noise for columns
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local np_column = {
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offset = 0,
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scale = 1,
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spread = {x = 8, y = 8, z = 8},
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seed = 1728833,
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octaves = 3,
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persist = 2
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}
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-- Do files
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dofile(minetest.get_modpath("pathv6alt") .. "/nodes.lua")
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-- Initialize noise objects to nil
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local nobj_base = nil
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local nobj_higher = nil
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local nobj_hselect = nil
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local nobj_mud = nil
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local nobj_patha = nil
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local nobj_pathb = nil
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local nobj_pathc = nil
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local nobj_pathd = nil
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local nobj_column = nil
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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 or minp.y > YMAXMINP 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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local c_air = minetest.get_content_id("air")
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local c_ignore = minetest.get_content_id("ignore")
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local c_tree = minetest.get_content_id("default:tree")
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local c_sand = minetest.get_content_id("default:sand")
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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_desand = minetest.get_content_id("default:desert_sand")
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local c_stone = minetest.get_content_id("default:stone")
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local c_destone = minetest.get_content_id("default:desert_stone")
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local c_wood = minetest.get_content_id("pathv6alt:junglewood")
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local c_path = minetest.get_content_id("pathv6alt:path")
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local c_column = minetest.get_content_id("pathv6alt:bridgewood")
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local c_stairn = minetest.get_content_id("pathv6alt:stairn")
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local c_stairs = minetest.get_content_id("pathv6alt:stairs")
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local c_staire = minetest.get_content_id("pathv6alt:staire")
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local c_stairw = minetest.get_content_id("pathv6alt:stairw")
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local c_stairne = minetest.get_content_id("pathv6alt:stairne")
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local c_stairnw = minetest.get_content_id("pathv6alt:stairnw")
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local c_stairse = minetest.get_content_id("pathv6alt:stairse")
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local c_stairsw = minetest.get_content_id("pathv6alt:stairsw")
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local c_pstairn = minetest.get_content_id("pathv6alt:pstairn")
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local c_pstairs = minetest.get_content_id("pathv6alt:pstairs")
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local c_pstaire = minetest.get_content_id("pathv6alt:pstaire")
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local c_pstairw = minetest.get_content_id("pathv6alt:pstairw")
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local c_pstairne = minetest.get_content_id("pathv6alt:pstairne")
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local c_pstairnw = minetest.get_content_id("pathv6alt:pstairnw")
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local c_pstairse = minetest.get_content_id("pathv6alt:pstairse")
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local c_pstairsw = minetest.get_content_id("pathv6alt:pstairsw")
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local sidelen = x1 - x0 + 1
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local overlen = sidelen + 5 -- noisemap x, z from minp-3 to maxp+2
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local chulens = {x = overlen, y = overlen, z = 1}
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local minpos = {x = x0 - 3, y = z0 - 3}
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nobj_base = nobj_base or minetest.get_perlin_map(np_base, chulens)
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nobj_higher = nobj_higher or minetest.get_perlin_map(np_higher, chulens)
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nobj_hselect = nobj_hselect or minetest.get_perlin_map(np_hselect, chulens)
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nobj_mud = nobj_mud or minetest.get_perlin_map(np_mud, chulens)
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nobj_patha = nobj_patha or minetest.get_perlin_map(np_patha, chulens)
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nobj_pathb = nobj_pathb or minetest.get_perlin_map(np_pathb, chulens)
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nobj_pathc = nobj_pathc or minetest.get_perlin_map(np_pathc, chulens)
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nobj_pathd = nobj_pathd or minetest.get_perlin_map(np_pathd, chulens)
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nobj_column = nobj_column or minetest.get_perlin_map(np_column, chulens)
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-- these 4 minpos are mgv6 noise offsets - 3
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local nvals_base = nobj_base:get2dMap_flat({x = x0 + 122, y = z0 + 122})
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local nvals_higher = nobj_higher:get2dMap_flat({x = x0 + 247, y = z0 + 247})
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local nvals_hselect = nobj_hselect:get2dMap_flat({x = x0 + 122, y = z0 + 122})
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local nvals_mud = nobj_mud:get2dMap_flat({x = x0 + 97, y = z0 + 97})
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local nvals_patha = nobj_patha:get2dMap_flat(minpos)
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local nvals_pathb = nobj_pathb:get2dMap_flat(minpos)
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local nvals_pathc = nobj_pathc:get2dMap_flat(minpos)
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local nvals_pathd = nobj_pathd:get2dMap_flat(minpos)
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local nvals_column = nobj_column:get2dMap_flat(minpos)
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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 emerlen = sidelen + 32
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local ni = 1
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local stable = {}
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for z = z0 - 3, z1 + 2 do
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local n_xprepatha = false
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local n_xprepathb = false
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local n_xprepathc = false
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local n_xprepathd = false
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-- x0-3, z0-3 is to setup initial values of 'xprepath_', 'zprepath_'
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for x = x0 - 3, x1 + 2 do
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local n_patha = nvals_patha[ni]
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local n_zprepatha = nvals_patha[(ni - overlen)]
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local n_pathb = nvals_pathb[ni]
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local n_zprepathb = nvals_pathb[(ni - overlen)]
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local n_pathc = nvals_pathc[ni]
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local n_zprepathc = nvals_pathc[(ni - overlen)]
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local n_pathd = nvals_pathd[ni]
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local n_zprepathd = nvals_pathd[(ni - overlen)]
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-- paths overgenerate by 2 nodes to erase mudflow griefing
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if x >= x0 - 2 and z >= z0 - 2 then
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local abscol = math.abs(nvals_column[ni])
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local base = nvals_base[ni]
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local higher = nvals_higher[ni]
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local hselect = nvals_hselect[ni]
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local mudadd = nvals_mud[ni] / 2 + 0.5
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if higher < base then
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higher = base
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end
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local tblend = 0.5 + HSAMP * (hselect + HSOFF)
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tblend = math.min(math.max(tblend, 0), 1)
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local tlevel = base * (1 - tblend) + higher * tblend + mudadd
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local pathy = math.floor(math.max(tlevel, 6))
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-- paths a and b
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if (n_patha >= 0 and n_xprepatha < 0)
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or (n_patha < 0 and n_xprepatha >= 0)
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or (n_patha >= 0 and n_zprepatha < 0)
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or (n_patha < 0 and n_zprepatha >= 0)
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or (n_pathb >= 0 and n_xprepathb < 0)
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or (n_pathb < 0 and n_xprepathb >= 0)
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or (n_pathb >= 0 and n_zprepathb < 0)
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or (n_pathb < 0 and n_zprepathb >= 0) then
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if pathy > y1 then -- build columns through this chunk
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if abscol < TCOL then
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local vi = area:index(x, y1, z)
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for y = 1, sidelen do
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local nodid = data[vi]
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if nodid == c_stone
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or nodid == c_destone then
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break
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else
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data[vi] = c_column
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end
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vi = vi - emerlen
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end
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end
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elseif pathy >= y0 then -- path in chunk, place path node brush
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local wood = true -- scan disk at path level for ground
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for k = -1, 1 do
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local vi = area:index(x - 1, pathy, z + k)
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for i = -1, 1 do
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local nodid = data[vi]
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if nodid == c_sand
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or nodid == c_desand
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or nodid == c_dirt
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or nodid == c_grass
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or nodid == c_stone
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or nodid == c_destone then
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wood = false -- use dirt path node
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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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local tunnel = false -- scan disk above path for stone
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local excatop
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for k = -1, 1 do
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local vi = area:index(x - 1, pathy + 5, z + k)
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for i = -1, 1 do
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local nodid = data[vi]
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if nodid == c_stone
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or nodid == c_destone then
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tunnel = true
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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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if tunnel then
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excatop = pathy + 5 -- tunnel
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else
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excatop = y1 -- excavate to chunk top
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end
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if WALK then
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if wood then
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local vi = area:index(x - 1, pathy, z - 1)
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if data[vi] ~= c_wood
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and data[vi] ~= c_path then
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data[vi] = c_stairne
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end
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vi = vi + 1
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if data[vi] ~= c_wood
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and data[vi] ~= c_path then
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data[vi] = c_stairn
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end
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vi = vi + 1
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if data[vi] ~= c_wood
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and data[vi] ~= c_path then
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data[vi] = c_stairnw
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end
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local vi = area:index(x - 1, pathy, z)
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if data[vi] ~= c_wood
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and data[vi] ~= c_path then
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data[vi] = c_staire
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end
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vi = vi + 1
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data[vi] = c_wood
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vi = vi + 1
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if data[vi] ~= c_wood
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and data[vi] ~= c_path then
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data[vi] = c_stairw
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end
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local vi = area:index(x - 1, pathy, z + 1)
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if data[vi] ~= c_wood
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and data[vi] ~= c_path then
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data[vi] = c_stairse
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end
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vi = vi + 1
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if data[vi] ~= c_wood
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and data[vi] ~= c_path then
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data[vi] = c_stairs
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end
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vi = vi + 1
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if data[vi] ~= c_wood
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and data[vi] ~= c_path then
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data[vi] = c_stairsw
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end
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else
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local vi = area:index(x - 1, pathy, z - 1)
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if data[vi] ~= c_path
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and data[vi] ~= c_wood then
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data[vi] = c_pstairne
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end
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vi = vi + 1
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if data[vi] ~= c_path
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and data[vi] ~= c_wood then
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data[vi] = c_pstairn
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end
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vi = vi + 1
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if data[vi] ~= c_path
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and data[vi] ~= c_wood then
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data[vi] = c_pstairnw
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end
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local vi = area:index(x - 1, pathy, z)
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if data[vi] ~= c_path
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and data[vi] ~= c_wood then
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data[vi] = c_pstaire
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end
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vi = vi + 1
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data[vi] = c_path
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vi = vi + 1
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if data[vi] ~= c_path
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and data[vi] ~= c_wood then
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data[vi] = c_pstairw
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end
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local vi = area:index(x - 1, pathy, z + 1)
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if data[vi] ~= c_path
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and data[vi] ~= c_wood then
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data[vi] = c_pstairse
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end
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vi = vi + 1
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if data[vi] ~= c_path
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and data[vi] ~= c_wood then
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data[vi] = c_pstairs
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end
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vi = vi + 1
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if data[vi] ~= c_path
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and data[vi] ~= c_wood then
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data[vi] = c_pstairsw
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end
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end
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for y = pathy + 1, excatop do
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for k = -1, 1 do
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local vi = area:index(x - 1, y, z + k)
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for i = -1, 1 do
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local nodid = data[vi]
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if y == excatop then
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if nodid == c_dirt
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or nodid == c_grass then
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data[vi] = c_stone
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elseif nodid == c_desand then
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data[vi] = c_destone
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end
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else
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if nodid ~= c_wood
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and nodid ~= c_path
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and nodid ~= c_stairn
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and nodid ~= c_stairs
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and nodid ~= c_staire
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and nodid ~= c_stairw
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and nodid ~= c_stairne
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and nodid ~= c_stairnw
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and nodid ~= c_stairse
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and nodid ~= c_stairsw
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and nodid ~= c_pstairn
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and nodid ~= c_pstairs
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and nodid ~= c_pstaire
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and nodid ~= c_pstairw
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and nodid ~= c_pstairne
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and nodid ~= c_pstairnw
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and nodid ~= c_pstairse
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and nodid ~= c_pstairsw then
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data[vi] = c_air
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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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else -- non walkable option
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for y = pathy, excatop do
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for k = -1, 1 do
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local vi = area:index(x - 1, y, z + k)
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for i = -1, 1 do
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local nodid = data[vi]
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if y == pathy then
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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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elseif nodid ~= c_wood
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and nodid ~= c_path then
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data[vi] = c_air
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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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end
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if wood then
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local vi = area:index(x, pathy - 1, z) -- bridge structure
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data[vi] = c_column
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vi = vi - emerlen
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data[vi] = c_column
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if abscol < TCOL then -- columns
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local vi = area:index(x, pathy - 3, z)
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for y = pathy - 3, y0, -1 do
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local nodid = data[vi]
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if nodid == c_stone
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or nodid == c_destone then
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break
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else
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data[vi] = c_column
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end
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vi = vi - emerlen
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end
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end
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end
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end
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-- paths c and d
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elseif (n_pathc >= 0 and n_xprepathc < 0)
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or (n_pathc < 0 and n_xprepathc >= 0)
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or (n_pathc >= 0 and n_zprepathc < 0)
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or (n_pathc < 0 and n_zprepathc >= 0)
|
|
or (n_pathd >= 0 and n_xprepathd < 0)
|
|
or (n_pathd < 0 and n_xprepathd >= 0)
|
|
or (n_pathd >= 0 and n_zprepathd < 0)
|
|
or (n_pathd < 0 and n_zprepathd >= 0) then
|
|
if pathy > y1 then -- build columns through this chunk
|
|
if abscol < TCOL then
|
|
for i = -1, 1, 2 do
|
|
for k = -1, 1, 2 do
|
|
local vi = area:index(x + i, y1, z + k)
|
|
for y = 1, sidelen do
|
|
local nodid = data[vi]
|
|
if nodid == c_stone
|
|
or nodid == c_destone then
|
|
break
|
|
else
|
|
data[vi] = c_column
|
|
end
|
|
vi = vi - emerlen
|
|
end
|
|
end
|
|
end
|
|
end
|
|
elseif pathy >= y0 then -- path in chunk, place path node brush
|
|
local wood = true -- scan disk at path level for ground
|
|
for k = -2, 2 do
|
|
local vi = area:index(x - 2, pathy, z + k)
|
|
for i = -2, 2 do
|
|
local nodid = data[vi]
|
|
if nodid == c_sand
|
|
or nodid == c_desand
|
|
or nodid == c_dirt
|
|
or nodid == c_grass
|
|
or nodid == c_stone
|
|
or nodid == c_destone then
|
|
wood = false
|
|
end
|
|
vi = vi + 1
|
|
end
|
|
end
|
|
|
|
local tunnel = false -- scan disk above path for stone
|
|
local excatop
|
|
for k = -2, 2 do
|
|
local vi = area:index(x - 2, pathy + 5, z + k)
|
|
for i = -2, 2 do
|
|
local nodid = data[vi]
|
|
if nodid == c_stone
|
|
or nodid == c_destone then
|
|
tunnel = true
|
|
end
|
|
vi = vi + 1
|
|
end
|
|
end
|
|
|
|
if tunnel then
|
|
excatop = pathy + 5 -- tunnel
|
|
else
|
|
excatop = y1 -- excavate to chunk top
|
|
end
|
|
|
|
if WALK then
|
|
if wood then
|
|
local vi = area:index(x - 2, pathy, z - 2)
|
|
if data[vi] ~= c_path
|
|
and data[vi] ~= c_wood then
|
|
data[vi] = c_stairne
|
|
end
|
|
for iter = 1, 3 do
|
|
vi = vi + 1
|
|
if data[vi] ~= c_path
|
|
and data[vi] ~= c_wood then
|
|
data[vi] = c_stairn
|
|
end
|
|
end
|
|
vi = vi + 1
|
|
if data[vi] ~= c_path
|
|
and data[vi] ~= c_wood then
|
|
data[vi] = c_stairnw
|
|
end
|
|
|
|
for k = -1, 1 do
|
|
local vi = area:index(x - 2, pathy, z + k)
|
|
if data[vi] ~= c_path
|
|
and data[vi] ~= c_wood then
|
|
data[vi] = c_staire
|
|
end
|
|
for iter = 1, 3 do
|
|
vi = vi + 1
|
|
data[vi] = c_wood
|
|
end
|
|
vi = vi + 1
|
|
if data[vi] ~= c_path
|
|
and data[vi] ~= c_wood then
|
|
data[vi] = c_stairw
|
|
end
|
|
end
|
|
|
|
local vi = area:index(x - 2, pathy, z + 2)
|
|
if data[vi] ~= c_path
|
|
and data[vi] ~= c_wood then
|
|
data[vi] = c_stairse
|
|
end
|
|
for iter = 1, 3 do
|
|
vi = vi + 1
|
|
if data[vi] ~= c_path
|
|
and data[vi] ~= c_wood then
|
|
data[vi] = c_stairs
|
|
end
|
|
end
|
|
vi = vi + 1
|
|
if data[vi] ~= c_path
|
|
and data[vi] ~= c_wood then
|
|
data[vi] = c_stairsw
|
|
end
|
|
else
|
|
local vi = area:index(x - 2, pathy, z - 2)
|
|
if data[vi] ~= c_path
|
|
and data[vi] ~= c_wood then
|
|
data[vi] = c_pstairne
|
|
end
|
|
for iter = 1, 3 do
|
|
vi = vi + 1
|
|
if data[vi] ~= c_path
|
|
and data[vi] ~= c_wood then
|
|
data[vi] = c_pstairn
|
|
end
|
|
end
|
|
vi = vi + 1
|
|
if data[vi] ~= c_path
|
|
and data[vi] ~= c_wood then
|
|
data[vi] = c_pstairnw
|
|
end
|
|
|
|
for k = -1, 1 do
|
|
local vi = area:index(x - 2, pathy, z + k)
|
|
if data[vi] ~= c_path
|
|
and data[vi] ~= c_wood then
|
|
data[vi] = c_pstaire
|
|
end
|
|
for iter = 1, 3 do
|
|
vi = vi + 1
|
|
data[vi] = c_path
|
|
end
|
|
vi = vi + 1
|
|
if data[vi] ~= c_path
|
|
and data[vi] ~= c_wood then
|
|
data[vi] = c_pstairw
|
|
end
|
|
end
|
|
|
|
local vi = area:index(x - 2, pathy, z + 2)
|
|
if data[vi] ~= c_path
|
|
and data[vi] ~= c_wood then
|
|
data[vi] = c_pstairse
|
|
end
|
|
for iter = 1, 3 do
|
|
vi = vi + 1
|
|
if data[vi] ~= c_path
|
|
and data[vi] ~= c_wood then
|
|
data[vi] = c_pstairs
|
|
end
|
|
end
|
|
vi = vi + 1
|
|
if data[vi] ~= c_path
|
|
and data[vi] ~= c_wood then
|
|
data[vi] = c_pstairsw
|
|
end
|
|
end
|
|
|
|
for y = pathy + 1, excatop do
|
|
for k = -2, 2 do
|
|
local vi = area:index(x - 2, y, z + k)
|
|
for i = -2, 2 do
|
|
local nodid = data[vi]
|
|
if y == excatop then
|
|
if nodid == c_dirt
|
|
or nodid == c_grass then
|
|
data[vi] = c_stone
|
|
elseif nodid == c_desand then
|
|
data[vi] = c_destone
|
|
end
|
|
else
|
|
if nodid ~= c_wood
|
|
and nodid ~= c_path
|
|
and nodid ~= c_stairn
|
|
and nodid ~= c_stairs
|
|
and nodid ~= c_staire
|
|
and nodid ~= c_stairw
|
|
and nodid ~= c_stairne
|
|
and nodid ~= c_stairnw
|
|
and nodid ~= c_stairse
|
|
and nodid ~= c_stairsw
|
|
and nodid ~= c_pstairn
|
|
and nodid ~= c_pstairs
|
|
and nodid ~= c_pstaire
|
|
and nodid ~= c_pstairw
|
|
and nodid ~= c_pstairne
|
|
and nodid ~= c_pstairnw
|
|
and nodid ~= c_pstairse
|
|
and nodid ~= c_pstairsw then
|
|
data[vi] = c_air
|
|
end
|
|
end
|
|
vi = vi + 1
|
|
end
|
|
end
|
|
end
|
|
else -- non walkable option
|
|
for y = pathy, excatop do
|
|
for k = -2, 2 do
|
|
local vi = area:index(x - 2, y, z + k)
|
|
for i = -2, 2 do
|
|
if math.abs(k) + math.abs(i) <= 3 then
|
|
local nodid = data[vi]
|
|
if y == pathy then
|
|
if wood then
|
|
data[vi] = c_wood
|
|
else
|
|
data[vi] = c_path
|
|
end
|
|
elseif nodid ~= c_wood
|
|
and nodid ~= c_path then
|
|
data[vi] = c_air
|
|
end
|
|
end
|
|
vi = vi + 1
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
if wood then
|
|
for i = -1, 1 do -- bridge structure
|
|
for k = -1, 1 do
|
|
if not (i == 0 and k == 0) then
|
|
local vi = area:index(x + i, pathy - 1, z + k)
|
|
for y = 1, 2 do
|
|
data[vi] = c_column
|
|
vi = vi - emerlen
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
if abscol < TCOL then -- columns
|
|
for i = -1, 1, 2 do
|
|
for k = -1, 1, 2 do
|
|
local vi = area:index(x + i, pathy - 3, z + k)
|
|
for y = pathy - 3, y0, -1 do
|
|
local nodid = data[vi]
|
|
if nodid == c_stone
|
|
or nodid == c_destone then
|
|
break
|
|
else
|
|
data[vi] = c_column
|
|
end
|
|
vi = vi - emerlen
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
n_xprepatha = n_patha
|
|
n_xprepathb = n_pathb
|
|
n_xprepathc = n_pathc
|
|
n_xprepathd = n_pathd
|
|
ni = ni + 1
|
|
end
|
|
end
|
|
|
|
vm:set_data(data)
|
|
vm:set_lighting({day = 0, night = 0})
|
|
vm:calc_lighting()
|
|
vm:write_to_map(data)
|
|
|
|
local chugent = math.ceil((os.clock() - t1) * 1000)
|
|
print ("[pathv6alt] " .. chugent .. " ms")
|
|
end)
|