83 lines
1.7 KiB
Lua
83 lines
1.7 KiB
Lua
local has_vacuum_mod = minetest.get_modpath("vacuum")
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-- http://dev.minetest.net/PerlinNoiseMap
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-- basic planet noise
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local planet_params = {
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offset = 0,
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scale = 1,
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spread = {x=2000, y=200, z=2000},
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seed = 345465738,
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octaves = 3,
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persist = 0.6
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}
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local c_base = minetest.get_content_id("default:stone")
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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_vacuum
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if has_vacuum_mod then
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c_vacuum = minetest.get_content_id("vacuum:vacuum")
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end
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local planet_perlin
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local planet_perlin_map = {}
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planetoids.mapgen_oreplanet = function(minp, maxp, vm, area)
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local data = vm:get_data()
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local side_length = maxp.x - minp.x + 1 -- 80
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local map_lengths_xyz = {x=side_length, y=side_length, z=side_length}
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planet_perlin = planet_perlin or minetest.get_perlin_map(planet_params, map_lengths_xyz)
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planet_perlin:get_3d_map_flat(minp, planet_perlin_map)
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local i = 1
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for z=minp.z,maxp.z do
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for y=minp.y,maxp.y do
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for x=minp.x,maxp.x do
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local index = area:index(x,y,z)
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if data[index] == c_air or data[index] == c_vacuum or data[index] == c_ignore then
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-- unpopulated node
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local planet_n = planet_perlin_map[i]
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if planet_n > planetoids.min_chance then
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-- planet
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data[index] = c_base
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for _,ore in pairs(planetoids.ores) do
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if planet_n > ore.chance then
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if ore.id then
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-- "plain" layer
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data[index] = ore.id
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elseif ore.id_list then
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-- mixed layer
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data[index] = ore.id_list[math.random(1,#ore.id_list)]
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end
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break
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end
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end
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end
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end
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i = i + 1
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end --x
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end --y
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end --z
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vm:set_data(data)
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minetest.generate_ores(vm, minp, maxp)
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end
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