dfcaverns/df_caverns/shared.lua
FaceDeer 882395ef75
Modpack refactor (#4)
Split this mod into a set of sub-mods in a modpack, and in the process did a whole bunch of renovations.

* updated Subterrane's API to allow for more patterned placement of things
* added "warrens"
* clean separation of flooded and non-flooded caverns
* rearranged biomes to make cavern layers more distinct
* added oil layer
* added underworld layer
2018-12-31 11:46:27 -07:00

210 lines
7.7 KiB
Lua

-- This file contains code that is used by multiple different cavern layers.
local c_water = minetest.get_content_id("default:water_source")
local c_air = minetest.get_content_id("air")
local c_dirt = minetest.get_content_id("default:dirt")
local c_gravel = minetest.get_content_id("default:gravel")
local c_dirt_moss = minetest.get_content_id("df_mapitems:dirt_with_cave_moss")
local c_cobble_fungus = minetest.get_content_id("df_mapitems:cobble_with_floor_fungus")
local c_cobble_fungus_fine = minetest.get_content_id("df_mapitems:cobble_with_floor_fungus_fine")
local c_cobble = minetest.get_content_id("default:cobble")
local c_mossycobble = minetest.get_content_id("default:mossycobble")
local c_wet_flowstone = minetest.get_content_id("df_mapitems:wet_flowstone")
local c_dry_flowstone = minetest.get_content_id("df_mapitems:dry_flowstone")
df_caverns.data_param2 = {}
--------------------------------------------------
df_caverns.stalagmites = function(abs_cracks, vert_rand, vi, area, data, data_param2, wet, reverse_sign)
local flowstone
local stalagmite_ids
if wet then
flowstone = c_wet_flowstone
stalagmite_ids = df_mapitems.wet_stalagmite_ids
else
flowstone = c_dry_flowstone
stalagmite_ids = df_mapitems.dry_stalagmite_ids
end
local height_mult = 1
local ystride = area.ystride
if reverse_sign then
ystride = - ystride
height_mult = -1
end
if vert_rand < 0.004 then
if reverse_sign then
subterrane.big_stalactite(vi+ystride, area, data, 6, 15, flowstone, flowstone, flowstone)
else
subterrane.big_stalagmite(vi+ystride, area, data, 6, 15, flowstone, flowstone, flowstone)
end
else
local param2 = abs_cracks*1000000 - math.floor(abs_cracks*1000000/4)*4
local height = math.floor(abs_cracks * 50)
subterrane.stalagmite(vi+ystride, area, data, data_param2, param2, height*height_mult, stalagmite_ids)
end
data[vi] = flowstone
end
df_caverns.stalactites = function(abs_cracks, vert_rand, vi, area, data, data_param2, wet)
df_caverns.stalagmites(abs_cracks, vert_rand, vi, area, data, data_param2, wet, true)
end
--------------------------------------------------
df_caverns.flooded_cavern_floor = function(abs_cracks, vert_rand, vi, area, data)
local ystride = area.ystride
if abs_cracks < 0.25 then
data[vi] = c_mossycobble
elseif data[vi-ystride] ~= c_water then
data[vi] = c_dirt
end
-- put in only the large stalagmites that won't get in the way of the water
if abs_cracks < 0.1 then
if vert_rand < 0.004 then
subterrane.big_stalagmite(vi+ystride, area, data, 6, 15, c_wet_flowstone, c_wet_flowstone, c_wet_flowstone)
end
end
end
local c_dead_fungus
if minetest.get_modpath("df_farming") then
c_dead_fungus = minetest.get_content_id("df_farming:dead_fungus")
end
df_caverns.dry_cavern_floor = function(abs_cracks, vert_rand, vi, area, data, data_param2)
if abs_cracks < 0.075 then
df_caverns.stalagmites(abs_cracks, vert_rand, vi, area, data, data_param2, false)
elseif abs_cracks < 0.4 then
data[vi] = c_cobble
elseif abs_cracks < 0.6 then
data[vi] = c_cobble_fungus_fine
else
data[vi] = c_cobble_fungus
if c_dead_fungus and math.random() < 0.05 then
data[vi+area.ystride] = c_dead_fungus
end
end
end
df_caverns.wet_cavern_floor = function(abs_cracks, vert_rand, vi, area, data, data_param2)
if abs_cracks < 0.1 then
df_caverns.stalagmites(abs_cracks, vert_rand, vi, area, data, data_param2, true)
elseif abs_cracks < 0.6 then
data[vi] = c_cobble
else
data[vi] = c_mossycobble
if c_dead_fungus and math.random() < 0.05 then
data[vi+area.ystride] = c_dead_fungus
end
end
end
--------------------------------------
df_caverns.glow_worm_cavern_ceiling = function(abs_cracks, vert_rand, vi, area, data, data_param2)
if abs_cracks < 0.1 then
df_caverns.stalactites(abs_cracks, vert_rand, vi, area, data, data_param2, true)
elseif abs_cracks < 0.5 and abs_cracks > 0.3 and math.random() < 0.3 then
df_mapitems.glow_worm_ceiling(area, data, vi-area.ystride)
end
end
local content_in_list=function(content, list)
for i, v in ipairs(list) do
if content == v then return true end
end
return false
end
df_caverns.tunnel_floor = function(minp, maxp, area, vi, nvals_cracks, data, data_param2, wet)
local ystride = area.ystride
local index2d = mapgen_helper.index2di(minp, maxp, area, vi)
local cracks = nvals_cracks[index2d]
local abs_cracks = math.abs(cracks)
if wet then
if abs_cracks < 0.05 and data[vi+ystride] == c_air and not content_in_list(data[vi], df_mapitems.wet_stalagmite_ids) then -- make sure data[vi] is not already flowstone. Stalagmites from lower levels are acting as base for further stalagmites
local param2 = abs_cracks*1000000 - math.floor(abs_cracks*1000000/4)*4
local height = math.floor(abs_cracks * 100)
subterrane.stalagmite(vi+ystride, area, data, data_param2, param2, height, df_mapitems.wet_stalagmite_ids)
data[vi] = c_wet_flowstone
end
else
if abs_cracks < 0.025 and data[vi+ystride] == c_air and not content_in_list(data[vi], df_mapitems.dry_stalagmite_ids) then -- make sure data[vi] is not already flowstone. Stalagmites from lower levels are acting as base for further stalagmites
local param2 = abs_cracks*1000000 - math.floor(abs_cracks*1000000/4)*4
local height = math.floor(abs_cracks * 100)
subterrane.stalagmite(vi+ystride, area, data, data_param2, param2, height, df_mapitems.dry_stalagmite_ids)
elseif cracks > 0.5 and data[vi-ystride] ~= c_air then
data[vi] = c_gravel
end
end
end
df_caverns.tunnel_ceiling = function(minp, maxp, area, vi, nvals_cracks, data, data_param2, wet)
local ystride = area.ystride
local index2d = mapgen_helper.index2di(minp, maxp, area, vi)
local cracks = nvals_cracks[index2d]
local abs_cracks = math.abs(cracks)
if wet then
if abs_cracks < 0.05 and data[vi-ystride] == c_air and not content_in_list(data[vi], df_mapitems.wet_stalagmite_ids) then -- make sure data[vi] is not already flowstone. Stalagmites from lower levels are acting as base for further stalagmites
local param2 = abs_cracks*1000000 - math.floor(abs_cracks*1000000/4)*4
local height = math.floor(abs_cracks * 100)
subterrane.stalactite(vi-ystride, area, data, data_param2, param2, height, df_mapitems.wet_stalagmite_ids)
data[vi] = c_wet_flowstone
end
else
if abs_cracks < 0.025 and data[vi-ystride] == c_air and not content_in_list(data[vi], df_mapitems.dry_stalagmite_ids) then -- make sure data[vi] is not already flowstone. Stalagmites from lower levels are acting as base for further stalagmites
local param2 = abs_cracks*1000000 - math.floor(abs_cracks*1000000/4)*4
local height = math.floor(abs_cracks * 100)
subterrane.stalactite(vi-ystride, area, data, data_param2, param2, height, df_mapitems.dry_stalagmite_ids)
end
end
end
df_caverns.perlin_cave = {
offset = 0,
scale = 1,
spread = {x=df_caverns.config.horizontal_cavern_scale, y=df_caverns.config.vertical_cavern_scale, z=df_caverns.config.horizontal_cavern_scale},
seed = -400000000089,
octaves = 3,
persist = 0.67
}
df_caverns.perlin_wave = {
offset = 0,
scale = 1,
spread = {x=df_caverns.config.horizontal_cavern_scale * 2, y=df_caverns.config.vertical_cavern_scale, z=df_caverns.config.horizontal_cavern_scale * 2}, -- squashed 2:1
seed = 59033,
octaves = 6,
persist = 0.63
}
-- Used for making lines of dripstone, and in various other places where small-scale patterns are needed
df_caverns.np_cracks = {
offset = 0,
scale = 1,
spread = {x = 20, y = 20, z = 20},
seed = 5717,
octaves = 3,
persist = 0.63,
lacunarity = 2.0,
}
---------------------------------------------------------------------------------
df_caverns.place_shrub = function(vi, area, data, param2_data, shrub_list)
if shrub_list == nil then
return
end
local shrub = shrub_list[math.random(#shrub_list)]
shrub(vi, area, data, param2_data)
end