81 lines
2.1 KiB
Lua
81 lines
2.1 KiB
Lua
local def_setting = mapgen_rivers.define_setting
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mapgen_rivers.noise_params = {
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base = def_setting('np_base', 'noise', {
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offset = 0,
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scale = 300,
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seed = 2469,
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octaves = 8,
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spread = {x=2048, y=2048, z=2048},
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persist = 0.6,
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lacunarity = 2,
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flags = "eased",
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}),
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distort_x = def_setting('np_distort_x', 'noise', {
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offset = 0,
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scale = 1,
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seed = -4574,
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spread = {x=64, y=32, z=64},
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octaves = 3,
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persistence = 0.75,
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lacunarity = 2,
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}),
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distort_z = def_setting('np_distort_z', 'noise', {
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offset = 0,
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scale = 1,
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seed = -7940,
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spread = {x=64, y=32, z=64},
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octaves = 3,
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persistence = 0.75,
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lacunarity = 2,
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}),
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distort_amplitude = def_setting('np_distort_amplitude', 'noise', {
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offset = 0,
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scale = 10,
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seed = 676,
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spread = {x=1024, y=1024, z=1024},
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octaves = 5,
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persistence = 0.5,
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lacunarity = 2,
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flags = "absvalue",
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}),
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heat = minetest.get_mapgen_setting_noiseparams('mg_biome_np_heat'),
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heat_blend = minetest.get_mapgen_setting_noiseparams('mg_biome_np_heat_blend'),
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}
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-- Convert to number because Minetest API is not able to do it cleanly...
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for name, np in pairs(mapgen_rivers.noise_params) do
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for field, value in pairs(np) do
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if field ~= 'flags' and type(value) == 'string' then
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np[field] = tonumber(value) or value
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elseif field == 'spread' then
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for dir, v in pairs(value) do
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value[dir] = tonumber(v) or v
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end
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end
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end
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end
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local heat = mapgen_rivers.noise_params.heat
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local base = mapgen_rivers.noise_params.base
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local settings = mapgen_rivers.settings
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heat.offset = heat.offset + settings.sea_level * settings.elevation_chill
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base.spread.x = base.spread.x / settings.blocksize
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base.spread.y = base.spread.y / settings.blocksize
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base.spread.z = base.spread.z / settings.blocksize
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for name, np in pairs(mapgen_rivers.noise_params) do
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local lac = np.lacunarity or 2
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if lac > 1 then
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local omax = math.floor(math.log(math.min(np.spread.x, np.spread.y, np.spread.z)) / math.log(lac))+1
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if np.octaves > omax then
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minetest.log("warning", "[mapgen_rivers] Noise " .. name .. ": 'octaves' reduced to " .. omax)
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np.octaves = omax
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end
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end
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end
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