99 lines
2.1 KiB
Lua
99 lines
2.1 KiB
Lua
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local has_bedrock_mod = minetest.get_modpath("bedrock")
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-- http://dev.minetest.net/PerlinNoiseMap
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-- basic planet height noise
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local base_params = {
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offset = 0,
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scale = 1,
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spread = {x=1024, y=512, z=1024},
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seed = 3468584,
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octaves = 5,
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persist = 0.6
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}
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-- ore params
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local ore_params = {
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offset = 0,
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scale = 1,
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spread = {x=128, y=64, z=128},
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seed = 935472,
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octaves = 4,
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persist = 0.6
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}
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local c_base = minetest.get_content_id("default:desert_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 = minetest.get_content_id("vacuum:vacuum")
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local c_clay = minetest.get_content_id("default:clay")
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local c_bedrock
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if has_bedrock_mod then
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c_bedrock = minetest.get_content_id("bedrock:bedrock")
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end
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local y_min = 11000
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local y_max = 11280
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local y_diff = y_max - y_min
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minetest.register_on_generated(function(minp, maxp, seed)
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if minp.y < y_min or minp.y > y_max then
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return
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end
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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 is_solid = minp.y < y_min+100
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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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local base_perlin_map = minetest.get_perlin_map(base_params, map_lengths_xyz):get3dMap_flat(minp)
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local ore_perlin_map = minetest.get_perlin_map(ore_params, map_lengths_xyz):get3dMap_flat(minp)
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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 y >= y_min and y < y_min+10 and has_bedrock_mod then
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data[index] = c_bedrock
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elseif 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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-- higher elevation = lower chance
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local chance = (y-minp.y) / side_length
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local base_n = math.min(0, base_perlin_map[i] + 1)
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local ore_n = ore_perlin_map[i]
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if is_solid or base_n > chance then
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-- basic material
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data[index] = c_base
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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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vm:write_to_map()
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end)
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print("[OK] Planet: mars")
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