dfcaverns/biomes.lua

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local c_water = minetest.get_content_id("default:water_source")
local c_air = minetest.get_content_id("air")
local c_stone = minetest.get_content_id("default:stone")
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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")
local c_coal_ore = minetest.get_content_id("default:stone_with_coal")
local c_gravel = minetest.get_content_id("default:gravel")
local c_obsidian = minetest.get_content_id("default:obsidian")
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local c_sweet_pod = minetest.get_content_id("dfcaverns:sweet_pod_6") -- param2 = 0
local c_quarry_bush = minetest.get_content_id("dfcaverns:quarry_bush_5") -- param2 = 4
local c_plump_helmet = minetest.get_content_id("dfcaverns:plump_helmet_4") -- param2 = 0-3
local c_pig_tail = minetest.get_content_id("dfcaverns:pig_tail_8") -- param2 = 3
local c_dimple_cup = minetest.get_content_id("dfcaverns:dimple_cup_4") -- param2 = 0
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local c_cave_wheat = minetest.get_content_id("dfcaverns:cave_wheat_8") -- param2 = 3
local c_dead_fungus = minetest.get_content_id("dfcaverns:dead_fungus") -- param2 = 0
local c_cavern_fungi = minetest.get_content_id("dfcaverns:cavern_fungi") -- param2 = 0
local c_dirt_moss = minetest.get_content_id("dfcaverns:dirt_with_cave_moss")
local c_cobble_fungus = minetest.get_content_id("dfcaverns:cobble_with_floor_fungus")
local c_wet_flowstone = minetest.get_content_id("dfcaverns:wet_flowstone")
local shallow_cave_floor = function(area, data, ai, vi, bi, param2_data)
if data[bi] ~= c_stone then
return
end
local drip_rand = subterrane:vertically_consistent_random(vi, area)
if drip_rand < 0.025 then
local param2 = drip_rand*1000000 - math.floor(drip_rand*1000000/4)*4
local height = math.floor(drip_rand/0.025 * 4)
subterrane:small_stalagmite(vi, area, data, param2_data, param2, height, dfcaverns.dry_stalagmite_ids)
end
end
local shallow_cave_ceiling = function(area, data, ai, vi, bi, param2_data)
if data[ai] ~= c_stone then
return
end
local drip_rand = subterrane:vertically_consistent_random(vi, area)
if drip_rand < 0.025 then
local param2 = drip_rand*1000000 - math.floor(drip_rand*1000000/4)*4
local height = math.floor(drip_rand/0.025 * 5)
subterrane:small_stalagmite(vi, area, data, param2_data, param2, -height, dfcaverns.dry_stalagmite_ids)
end
end
local perlin_cave = {
offset = 0,
scale = 1,
spread = {x=dfcaverns.config.horizontal_cavern_scale, y=dfcaverns.config.vertical_cavern_scale, z=dfcaverns.config.horizontal_cavern_scale},
seed = -400000000089,
octaves = 3,
persist = 0.67
}
local perlin_wave = {
offset = 0,
scale = 1,
spread = {x=dfcaverns.config.horizontal_cavern_scale * 2, y=dfcaverns.config.vertical_cavern_scale, z=dfcaverns.config.horizontal_cavern_scale * 2}, -- squashed 2:1
seed = 59033,
octaves = 6,
persist = 0.63
}
-- default mapgen registers an "underground" biome that gets in the way of everything.
subterrane:override_biome({
name = "underground",
y_min = dfcaverns.config.ymax,
y_max = -113,
heat_point = 50,
humidity_point = 50,
_subterrane_cave_floor_decor = shallow_cave_floor,
_subterrane_cave_ceiling_decor = shallow_cave_ceiling,
})
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subterrane:register_cave_decor(-113, dfcaverns.config.ymax)
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subterrane:register_cave_layer({
minimum_depth = dfcaverns.config.ymax,
maximum_depth = dfcaverns.config.level1_min,
cave_threshold = dfcaverns.config.cavern_threshold,
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perlin_cave = perlin_cave,
perlin_wave = perlin_wave,
columns = {
maximum_radius = 10,
minimum_radius = 4,
node = c_wet_flowstone,
weight = 0.25,
maximum_count = 20,
minimum_count = 0,
},
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})
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subterrane:register_cave_layer({
minimum_depth = dfcaverns.config.level1_min,
maximum_depth = dfcaverns.config.level2_min,
cave_threshold = dfcaverns.config.cavern_threshold,
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perlin_cave = perlin_cave,
perlin_wave = perlin_wave,
columns = {
maximum_radius = 15,
minimum_radius = 4,
node = c_wet_flowstone,
weight = 0.25,
maximum_count = 30,
minimum_count = 5,
},
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})
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subterrane:register_cave_layer({
minimum_depth = dfcaverns.config.level2_min,
maximum_depth = dfcaverns.config.level3_min,
cave_threshold = dfcaverns.config.cavern_threshold,
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perlin_cave = perlin_cave,
perlin_wave = perlin_wave,
columns = {
maximum_radius = 20,
minimum_radius = 5,
node = c_wet_flowstone,
weight = 0.25,
maximum_count = 50,
minimum_count = 10,
},
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})
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local perlin_cave_lava = {
offset = 0,
scale = 1,
spread = {x=dfcaverns.config.horizontal_cavern_scale * 2, y=dfcaverns.config.vertical_cavern_scale * 0.5, z=dfcaverns.config.horizontal_cavern_scale * 2},
seed = -400000000089,
octaves = 3,
persist = 0.67
}
local perlin_wave_lava = {
offset = 0,
scale = 1,
spread = {x=dfcaverns.config.horizontal_cavern_scale * 4, y=dfcaverns.config.vertical_cavern_scale * 0.5, z=dfcaverns.config.horizontal_cavern_scale * 4}, -- squashed 2:1
seed = 59033,
octaves = 6,
persist = 0.63
}
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subterrane:register_cave_layer({
minimum_depth = dfcaverns.config.level3_min,
maximum_depth = dfcaverns.config.sunless_sea_min,
cave_threshold = dfcaverns.config.lava_sea_threshold,
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perlin_cave = perlin_cave_lava,
perlin_wave = perlin_wave_lava,
columns = {
maximum_radius = 25,
minimum_radius = 5,
node = c_stone,
weight = 0.25,
maximum_count = 100,
minimum_count = 25,
},
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})
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if dfcaverns.config.enable_lava_sea then
subterrane:register_cave_layer({
minimum_depth = dfcaverns.config.lava_sea_max,
maximum_depth = dfcaverns.config.lava_sea_min,
cave_threshold = dfcaverns.config.lava_sea_threshold,
perlin_cave = perlin_cave_lava,
perlin_wave = perlin_wave_lava,
columns = {
maximum_radius = 30,
minimum_radius = 5,
node = c_obsidian,
weight = 0.5,
maximum_count = 100,
minimum_count = 25,
},
})
end
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dfcaverns.can_support_vegetation = {[c_sand] = true, [c_dirt] = true, [c_coal_ore] = true, [c_gravel] = true}
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dfcaverns.place_shrub = function(data, vi, param2_data, shrub_list)
local shrub = shrub_list[math.random(#shrub_list)]
if shrub == c_quarry_bush then
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data[vi] = c_quarry_bush
param2_data[vi] = 4
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elseif shrub == c_plump_helmet then
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data[vi] = c_plump_helmet
param2_data[vi] = math.random(0,3)
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elseif shrub == c_pig_tail then
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data[vi] = c_pig_tail
param2_data[vi] = 3
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elseif shrub == c_cave_wheat then
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data[vi] = c_cave_wheat
param2_data[vi] = 3
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else
data[vi] = shrub
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param2_data[vi] = 0
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end
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end