-- This file configures the Valleys mapgen settings to produce much larger-scale, more explorable terrain.
-- These settings were originally posted by voxelproof on the Minetest forum: https://forum.luanti.org/viewtopic.php?p=336441#p336441

minetest.set_mapgen_setting_noiseparams("mgvalleys_np_terrain_height", {
    flags = "defaults",
    lacunarity = 1,
    offset = -10,
    scale = 1000,
    spread = vector.new(2048,2048,4096),
    seed = 4541,
    octaves = 6,
    persistence = 0.45,
}, true)
minetest.set_mapgen_setting_noiseparams("mgvalleys_np_inter_valley_slope", {
    flags = "defaults",
    lacunarity = 2,
    offset = 0.5,
    scale = 0.5,
    spread = vector.new(128,128,1024),
    seed = 746,
    octaves = 1,
    persistence = 1,
}, true)
minetest.set_mapgen_setting_noiseparams("mgvalleys_np_inter_valley_fill", {
    flags = "defaults",
    lacunarity = 2,
    offset = 0,
    scale = 1,
    spread = vector.new(256,512,256),
    seed = 1993,
    octaves = 6,
    persistence = 0.8,
}, true)
minetest.set_mapgen_setting_noiseparams("mgvalleys_np_filler_depth", {
    flags = "defaults",
    lacunarity = 2,
    offset = 0,
    scale = 1.2,
    spread = vector.new(256,256,256),
    seed = 1605,
    octaves = 3,
    persistence = 0.5,
}, true)
minetest.set_mapgen_setting_noiseparams("mgvalleys_np_massive_caves", {
    flags = "defaults",
    lacunarity = 2,
    offset = 0,
    scale = 1,
    spread = vector.new(512,256,256),
    seed = 59033,
    octaves = 6,
    persistence = 0.63,
}, true)
minetest.set_mapgen_setting_noiseparams("mgvalleys_np_cave2", {
    flags = "defaults",
    lacunarity = 2,
    offset = 0,
    scale = 23, -- 13
    spread = vector.new(67,67,67),
    seed = 10325,
    octaves = 3,
    persistence = 0.5,
}, true)
minetest.set_mapgen_setting_noiseparams("mgvalleys_np_cave1", {
    flags = "defaults",
    lacunarity = 2,
    offset = 0,
    scale = 23, -- 13
    spread = vector.new(61,61,61),
    seed = 52534,
    octaves = 3,
    persistence = 0.3,
}, true)
--mgvalleys_cave_width = 0.01
--mgvalleys_river_size = 2
--mg_flags = caves, dungeons, light, decorations
--chunksize = 5
--mgvalleys_lava_features = 0
--mg_name = valleys
--mapgen_limit = 31000
--water_level = 1
--seed = 18446744073709545565
minetest.set_mapgen_setting_noiseparams("mgvalleys_np_rivers", {
    flags = "defaults",
    lacunarity = 2,
    offset = 0,
    scale = 2,
    spread = vector.new(512,512,128),
    seed = -6050,
    octaves = 5,
    persistence = 0.6,
}, true)
minetest.set_mapgen_setting_noiseparams("mg_biome_np_heat", {
    flags = "defaults",
    lacunarity = 2,
    offset = 50,
    scale = 50,
    spread = vector.new(1000,1000,1000),
    seed = 5349,
    octaves = 3,
    persistence = 0.5,
}, true)
--mgvalleys_water_features = 0
minetest.set_mapgen_setting_noiseparams("mg_biome_np_heat_blend", {
    flags = "defaults",
    lacunarity = 2,
    offset = 0,
    scale = 1.5,
    spread = vector.new(8,8,8),
    seed = 13,
    octaves = 2,
    persistence = 1,
}, true)
minetest.set_mapgen_setting_noiseparams("mg_biome_np_humidity", {
    flags = "defaults",
    lacunarity = 2,
    offset = 50,
    scale = 50,
    spread = vector.new(1000,1000,1000),
    seed = 842,
    octaves = 3,
    persistence = 0.5,
}, true)
minetest.set_mapgen_setting_noiseparams("mg_biome_np_humidity_blend", {
    flags = "defaults",
    lacunarity = 2,
    offset = 0,
    scale = 1.5,
    spread = vector.new(8,8,8),
    seed = 90003,
    octaves = 2,
    persistence = 1,
}, true)
minetest.set_mapgen_setting("mgvalleys_spflags", "altitude_chill, humid_rivers")
minetest.set_mapgen_setting_noiseparams("mgvalleys_np_valley_depth", {
    flags = "defaults",
    lacunarity = 2,
    offset = 5,
    scale = 4,
    spread = vector.new(512,512,1024),
    seed = -1914,
    octaves = 1,
    persistence = 1,
}, true)
minetest.set_mapgen_setting("mgvalleys_altitude_chill", 90)
minetest.set_mapgen_setting_noiseparams("mgvalleys_np_valley_profile", {
    flags = "defaults",
    lacunarity = 2,
    offset = 0.6,
    scale = 0.5,
    spread = vector.new(64,2048,1024),
    seed = 777,
    octaves = 1,
    persistence = 1,
}, true)
--mgvalleys_large_cave_depth = -33
--mgvalleys_massive_cave_depth = -256
minetest.set_mapgen_setting("mgvalleys_river_depth", 0, true)

-- This ensures both that caverns are appropriately hard to reach and that they won't be reached on a large scale by oceans.
minetest.set_mapgen_setting("mgvalleys_cavern_limit", -1400, true)