many worldgen mods and gonna try technic now

mods/dfcaverns/.gitattributes

@@ -0,0 +1,17 @@
+# Auto detect text files and perform LF normalization
+* text=auto
+
+# Custom for Visual Studio
+*.cs     diff=csharp
+
+# Standard to msysgit
+*.doc	 diff=astextplain
+*.DOC	 diff=astextplain
+*.docx diff=astextplain
+*.DOCX diff=astextplain
+*.dot  diff=astextplain
+*.DOT  diff=astextplain
+*.pdf  diff=astextplain
+*.PDF	 diff=astextplain
+*.rtf	 diff=astextplain
+*.RTF	 diff=astextplain

mods/dfcaverns/.gitmodules

@@ -0,0 +1,8 @@
+[submodule "mapgen_helper"]
+	path = mapgen_helper
+	url = https://github.com/minetest-mods/mapgen_helper
+	branch = master
+[submodule "subterrane"]
+	path = subterrane
+	url = https://github.com/minetest-mods/subterrane
+	branch = master

mods/dfcaverns/API.md

@@ -0,0 +1,60 @@
+# Chat commands
+
+There are not many chat commands provided by this modpack since it's primarily a mapgen mod. Only one is available to non-server-admins:
+
+`mute_df_ambience`: Mutes or unmutes ambient sounds in deep caverns. This muted state is saved per-player, so players that are bothered by ambient sounds can disable them for themselves.
+
+The following are only available for server admins:
+
+`find_pit`: Finds the nearest glowing pit in the Underworld layer.
+
+`mapgen_helper_loc` and `mapgen_helper_tour`: only available if the `mapgen_helper_log_locations` setting has been set to true. mapgen_helper will then record the locations of various types of mapgen feature as they are generated, and these commands will teleport the server admin to them.
+
+`find_pit_caves`: Lists the locations of nearby vertical shaft caverns, including the top and bottom elevations.
+	
+# APIs
+
+Not all APIs are listed here, this list focuses on APIs that modders may wish to use in sub-mods that modify DF Caverns' functionality in the existing context of this modpack.
+
+## bones_loot
+
+This mod populates the bones in the underworld with loot.
+
+`bones_loot.register_loot`
+
+Uses same table format as dungeon_loot from the default minetest_game. eg, {{name = "bucket:bucket_water", chance = 0.45, types = {"sandstone", "desert"}},
+
+if dungeon_loot is installed it uses dungeon_loot's registration function directly.
+
+## chasms
+
+`chasms.register_ignore(node_name)`: Use this to set node types to be left alone by chasm-carving
+
+`chasms.is_in_chasm(pos)`: returns true if pos is inside a chasm.
+
+## df_ambience
+
+`df_ambience.add_set(def)`: adds a sound set to the ambience mod. See soundsets.lua for a bunch of examples of what can go in the `def` table.
+
+This mod has a lot of similarities to the [https://notabug.org/TenPlus1/ambience](ambience) mod, but after struggling to get that mod to "play nice" with df_caverns' needs it turned out to be easier to just re-implement the specific parts of the mod that were needed here.
+
+## df_caverns
+
+`df_caverns.get_biome(pos)`: returns the string name of the df_cavern biome that pos is located in, or nil if it's outside of any of df_caverns' cavern layers. df_caverns uses a homebrew biome system rather than the built-in biome registration system.
+
+`df_caverns.is_ground_content(node_id)`: used by subterrane's mapgen to avoid removing nodes placed by df_caverns' mapgen. If you're adding new map features inside dfcavern's hollow spaces and they're being chopped in half at mapblock boundaries then you may be able to solve this by overriding this method with one that recognizes the nodes you're adding.
+
+This was never really expected to be something that someone would need to do, though, so this is a little clunky. If you're having trouble with this please file an issue.
+
+`df_caverns.populate_puzzle_chest(pos)`: When a "puzzle chest" is generated in the Underworld ruins this method gets called to populate its contents. If you wish to override the contents of the puzzle chest then you can override this method. Place items in the "main" inventory at the pos parameter's location.
+
+## looped_node_sound
+
+`looped_node_sound.register(def)`: A simple mod for making nodes emit a looped sound when the player is nearby.
+
+  def = {
+    node_list = {"df_trees:torchspine_1_lit"},
+    sound = "dfcaverns_torchspine_loop",
+    max_gain = 0.5,
+    gain_per_node = 0.05,
+  }

mods/dfcaverns/LICENSE.txt

@@ -0,0 +1,26 @@
+Dwarf Fortress is copyright 2018 by Tarn Adams. This mod uses no assets or other copyrighted materials from Dwarf Fortress.
+
+Sounds and textures are under various licenses, see the license.txt file in the /sounds and /textures directories for details.
+
+License for Code
+----------------
+
+Copyright (C) 2021 FaceDeer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

mods/dfcaverns/README.md

@@ -0,0 +1,45 @@
+Inspired by the world of Dwarf Fortress, this mod adds a series of vast cavern layers to the depths of Minetest with a variety of biomes that are populated with the flora of Dwarf Fortress.
+
+## Cavern Layers
+
+The underground is divided into a number of cavern "layers" with a variety of biomes and other features distributed throughout. As one goes deeper one will find increasingly bizzare flora and exotic environments that provide new challenges and opportunities for players.
+
+The uppermost layer is home to relatively conventional tree-like fungal growths of Fungiwood and Tower-Cap mushrooms. These provide a source of underground wood. Also found in this region are plump helmets (an edible farmable mushroom), and cave wheat (a pale grass-like growth whose seeds can be ground for flour).
+
+The next layer down has more exotic growths. Here you can find Goblin Cap mushrooms, the squatter cousins of the Tower Caps. Spore Trees sprout in the warmer and wetter corners of the caverns, raising a climbable three-dimensional mesh or hyphyae above the ground that emits a gentle rain of spore powder. Tunnel Tubes grow in the hottest regions - tall, curved stalks with fruiting bodies at the tips that burst violently when ripe. Smaller growths found here include plump helmets, cave wheat, pig tails (a fibrous fungus that can be grown and harvested for thread) and sweet pods (whose fruiting bodies can be milled for sugar or processed into syrup).
+
+In the third cavern layer yet stranger forms of life flourish in the hostile conditions. The coal-black caverns of the Black Cap forests, rich with carbonaceous deposits that have accumulated over millions of years and lit by smouldering Torchspines, are found here. The frigid Nethercaps, blue-tinted mushrooms leaching heat out of their environment in ways that shouldn't be thermodynamically possible, fill their caverns with ice and snow. In the hotter areas the vicious Bloodthorn grows, with wicked spines that suck moisture from anything they can pierce. In caves too dry to support biological life enormous glowing crystals grow instead. Smaller plants that can be found here include quarry bushes (farmable for their spicy leaves) and dimple cups (whose eponymous parts can be ground to produce a brilliant blue dye).
+
+After the third layer are the shores of the Sunless Sea, the ultimate destination of all water that flows downward through the twisty caves of Minetest. Familiar growths crowd its fertile shores, with Tower Cap, Goblin Cap, Fungiwood and Spore Trees able to take root in this relatively hospitable zone. The caverns of the Sunless Sea are vast in extent but are mostly flooded with water, and below the surface grows treacherous Snareweed and underwater citadels of softly-glowing Cave Coral. Twisting rivers connect the various caverns of the Sunless Sea.
+
+Below the Sunless Sea are seas of a more dangerous sort: lakes of oil and the magma ocean. These caverns are filled with dangerous substances, though there are riches to be had as well; mineral growths fed by the heat and pressure and bountiful fuel sources.
+
+At the very foundation of the world lies an ancient impenetrable realm. There are signs that life once existed here but it is now long gone. Its dead hollows rest on a layer of Slade, a dense material impervious to conventional mining efforts.
+
+Unconventional methods of penetrating the Slade do exist, however. And should it be breached, the exotic Primordial cavern layer can be found beneath.
+
+## Other Features
+
+The giant caverns generated by this mod differ slightly from the default giant caverns found in some mapgens, they use an additional source of noise to generate more ledges and horizontal floors. They also contain stalactites and stalagmites of various sizes - from single-node spikes decorating the default twisty tunnels to mountainous behemoths in the main caverns that can reach tens of meters in diameter and hundreds of meters in height.
+
+The trees and plants mentioned above are all farmable, but in contrast to the usual farmable plants and trees they only grow in the *absence* of bright light. Attempting to plant them in sunlight will kill them. A set of recipes is added for cooking the edible ones into a variety of biscuits, stews, and roasts, and sweet pods can be refined into syrup.
+
+Some of the other cave decorations provide dim bioluminescent lighting in some caverns. Cave moss and hanging glow-worms are most common. There is also non-glowing floor fungus found coating the stone in less hospitable biomes, capable of spreading to adjacent cobblestone structures like a slow-creeping infection.
+
+[A more comprehensive guide can be found here.](guide.md)
+
+[APIs and player commands can be found here.](API.md)
+
+## Synergies with other mods
+
+"[dynamic liquid](https://github.com/minetest-mods/dynamic_liquid)" is recommended to provide Dwarf Fortress-like fluid dynamics and to deal with water that might spill into caverns.
+
+"[magma conduits](https://github.com/FaceDeer/magma_conduits/)" is recommended for a Dwarf Fortress like magmatic landscape. If not magma conduits, it is at least recommended that mapgen magma be disabled on whatever mapgen you're adding this mod to; mapgen magma is difficult for lua mapgens like this to tidy up and it will often spill into caverns setting large swaths of fungal forests on fire. Depending on the mapgen you're using this mod with you could do this by setting ``mgv5_lava_depth, mgv7_lava_depth``, ``mgcarpathian_lava_depth``, ``mgflat_lava_depth``, ``mgfractal_lava_depth``, or ``mgvalleys_lava_depth`` to -2800 (near the default depth of the magma sea).
+
+The "[doc](https://forum.minetest.net/viewtopic.php?f=9&t=15912&p=240152)" mod is supported to provide in-game documentation for all of the new items and nodes this mod adds.
+
+"[ropes](https://github.com/minetest-mods/ropes)" are very useful for navigating some of the large open spaces this mod provides. Some are large enough that a [glider](https://github.com/CBugDCoder/glider) may be well suited.
+
+"[radiant damage](https://github.com/FaceDeer/radiant_damage)" greatly increases the danger of the Magma Sea if heat radiance is enabled, as well as several of the rare crystals in the deeper layers that emit Mese radiation if that damage type is enabled.
+
+Adding "[named_waypoints](https://github.com/FaceDeer/named_waypoints)" and "[namegen](https://github.com/FaceDeer/namegen)" will provide some landmarks in the Underworld that a player can use to navigate by.

mods/dfcaverns/big_webs/LICENSE.txt

@@ -0,0 +1,24 @@
+Sounds and textures are under various licenses, see the license.txt file in the /sounds and /textures directories for details.
+
+License for Code
+----------------
+
+Copyright (C) 2021 FaceDeer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

mods/dfcaverns/big_webs/init.lua

@@ -0,0 +1,201 @@
+local modname = minetest.get_current_modname()
+local S = minetest.get_translator(modname)
+
+local sound
+if df_dependencies.sound_leaves then
+	sound = df_dependencies.sound_leaves()
+end
+
+local get_node_box = function(connector_thickness)
+	return {
+		type = "connected",
+		--fixed = {-hub_thickness,-hub_thickness,-hub_thickness,hub_thickness,hub_thickness,hub_thickness},
+		connect_top = {-connector_thickness, 0, -connector_thickness, connector_thickness, 0.5, connector_thickness},
+		connect_bottom = {-connector_thickness, -0.5, -connector_thickness, connector_thickness, 0, connector_thickness},
+		connect_back = {-connector_thickness, -connector_thickness, 0, connector_thickness, connector_thickness, 0.5},
+		connect_right = {0, -connector_thickness, -connector_thickness, 0.5, connector_thickness, connector_thickness},
+		connect_front = {-connector_thickness, -connector_thickness, -0.5, connector_thickness, connector_thickness, 0},
+		connect_left = {-0.5, -connector_thickness, -connector_thickness, 0, connector_thickness, connector_thickness},
+		disconnected = {-connector_thickness, -connector_thickness, -connector_thickness, connector_thickness, connector_thickness, connector_thickness},
+	}
+end
+
+local anchor_groups = {"group:soil", "group:stone", "group:tree", "group:wood", "group:webbing", "group:solid"}
+
+local in_anchor_group = function(name)
+	for _, group in pairs(anchor_groups) do
+		if minetest.get_item_group(name, string.sub(group, 7)) then
+			return true
+		end
+	end
+	if name == "ignore" then
+		return true
+	end
+end
+
+local cardinal_directions = {
+	{x=1,y=0,z=0},
+	{x=-1,y=0,z=0},
+	{x=0,y=1,z=0},
+	{x=0,y=-1,z=0},
+	{x=0,y=0,z=1},
+	{x=0,y=0,z=-1}
+}
+
+local cardinal_planes = {
+	{3,5},
+	{3,5},
+	{1,5},
+	{1,5},
+	{1,3},
+	{1,3},
+}
+
+local insert_if_not_in_hashtable = function(pos, insert_into, if_not_in)
+	local hash = minetest.hash_node_position(pos)
+	if if_not_in[hash] then
+		return
+	end
+	table.insert(insert_into, pos)
+end
+
+-- flood fill through the web to get all web and anchor locations
+local get_web_nodes = function(pos, webs, anchors)
+	local to_check = {}
+	table.insert(to_check, pos)
+	while next(to_check) ~= nil do
+		local check_pos = table.remove(to_check)
+		local check_node = minetest.get_node(check_pos)
+		if minetest.get_item_group(check_node.name, "webbing") > 0 then
+			webs[minetest.hash_node_position(check_pos)] = true
+			for _, dir in pairs(cardinal_directions) do
+				insert_if_not_in_hashtable(vector.add(check_pos, dir), to_check, webs)
+			end
+		elseif in_anchor_group(check_node.name) then
+			anchors[minetest.hash_node_position(check_pos)] = true
+		end		
+	end	
+end
+
+local web_line = function(pos, dir, distance)
+	local anchored
+	local web_spine = {}
+	for i = 0, distance do
+		local web_pos = vector.add(pos, vector.multiply(dir,i))
+		local node_name = minetest.get_node(web_pos).name
+		if node_name == "air" or node_name == "big_webs:webbing" then
+			table.insert(web_spine, web_pos)
+		elseif in_anchor_group(node_name) then
+			anchored=true
+			break
+		else
+			anchored=false
+			break
+		end
+	end
+
+	if anchored then
+		for _, web_pos in pairs(web_spine) do
+			if math.random() < 0.9 then
+				minetest.set_node(web_pos, {name="big_webs:webbing"})
+			end
+		end
+		return web_spine
+	end
+	return nil
+end
+
+local generate_web = function(pos)
+	local dir_choice = math.random(1, 6)
+	local dir = cardinal_directions[dir_choice]
+	local web_spine = web_line(pos, dir, 30)
+	if web_spine then
+		local dir2 = cardinal_directions[cardinal_planes[dir_choice][math.random(1, 2)]]
+		local dir2_opposite = vector.multiply(dir2, -1)
+		for _, web_pos in pairs(web_spine) do
+			web_line(web_pos, dir2, 15)
+			web_line(web_pos, dir2_opposite, 15)
+		end
+	end
+end
+
+minetest.register_node("big_webs:webbing", {
+	description = S("Giant Cave Spider Webbing"),
+	_doc_items_longdesc = S("Thick ropes of sticky, springy silk, strung between cavern walls in hopes of catching bats and even larger beasts."),
+	_doc_items_usagehelp = S("Webbing can be collected and re-strung elsewhere to aid in climbing. It absorbs all falling damage when you land on it."),
+	tiles = {
+		{name="big_webs.png"},
+	},
+	use_texture_alpha = "blend",
+    connects_to = anchor_groups,
+    connect_sides = { "top", "bottom", "front", "left", "back", "right" },
+	drawtype = "nodebox",
+	node_box = get_node_box(0.0625),
+	collision_box = get_node_box(0.0625),
+	inventory_image = "big_webs_item.png",
+	wield_image = "big_webs_item.png",
+	paramtype = "light",
+	is_ground_content = false,
+	climbable = true,
+	groups = {snappy = 2, choppy = 2, webbing = 1, shearsy = 1,  swordy=1, flammable=1, destroy_by_lava_flow=1, fall_damage_add_percent=-100, bouncy=20},
+	sounds = sound,
+	on_construct = function(pos)
+		minetest.get_node_timer(pos):start(30)
+	end,
+	on_destruct = function(pos)
+		for _, dir in pairs(cardinal_directions) do
+			local neighbor_pos = vector.add(pos, dir)
+			if minetest.get_item_group(minetest.get_node(neighbor_pos).name, "webbing") > 0 then
+				minetest.get_node_timer(neighbor_pos):start(30)
+			end
+		end
+		minetest.get_node_timer(pos):stop()
+	end,
+	on_timer = function(pos, elapsed)
+		local webs = {}
+		local anchors = {}
+		get_web_nodes(pos, webs, anchors)
+		local first_anchor = next(anchors)
+		for hash, _ in pairs(webs) do
+			local web_pos = minetest.get_position_from_hash(hash)
+			if first_anchor == nil then
+				-- unsupported web
+				minetest.set_node(web_pos, {name="air"})
+				minetest.item_drop(ItemStack("big_webs:webbing"), nil, web_pos)
+			end
+			minetest.get_node_timer(web_pos):stop() -- no need to recheck
+		end	
+	end,
+	_mcl_blast_resistance = 1.0,
+	_mcl_hardness = 0.5,
+})
+
+minetest.register_node("big_webs:web_egg", {
+	description = S("Giant Cave Spider Web Generator"),
+	tiles = {
+		{name="big_webs.png"},
+	},
+	use_texture_alpha = "blend",
+    connects_to = anchor_groups,
+    connect_sides = { "top", "bottom", "front", "left", "back", "right" },
+	drawtype = "nodebox",
+	node_box = get_node_box(0.0625),
+	collision_box = get_node_box(0.0625),
+	inventory_image = "big_webs_item.png",
+	wield_image = "big_webs_item.png",
+	paramtype = "light",
+	is_ground_content = false,
+	climbable = true,
+	floodable = true,
+	groups = {snappy = 2, choppy = 2, webbing = 1, flammable=1, fall_damage_add_percent=-100, bouncy=20},
+	sounds = sound,
+	on_construct = function(pos)
+		minetest.get_node_timer(pos):start(1)
+	end,
+	on_timer = function(pos, elapsed)
+		minetest.set_node(pos, {name="air"})
+		generate_web(pos)
+	end,
+	_mcl_blast_resistance = 1.0,
+	_mcl_hardness = 0.5,
+})

mods/dfcaverns/big_webs/locale/template.txt

@@ -0,0 +1,12 @@
+# textdomain: big_webs
+
+
+### init.lua ###
+
+Giant Cave Spider Web Generator=
+Giant Cave Spider Webbing=
+
+Thick ropes of sticky, springy silk, strung between cavern walls in hopes of catching bats and even larger beasts.=
+
+Webbing can be collected and re-strung elsewhere to aid in climbing. It absorbs all falling damage when you land on it.=
+

mods/dfcaverns/big_webs/mod.conf

@@ -0,0 +1,2 @@
+name=big_webs
+optional_depends=df_dependencies

mods/dfcaverns/bones_loot/LICENSE.txt

@@ -0,0 +1,22 @@
+License for Code
+----------------
+
+Copyright (C) 2019 FaceDeer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

mods/dfcaverns/bones_loot/init.lua

@@ -0,0 +1,205 @@
+local S = minetest.get_translator(minetest.get_current_modname())
+
+local dungeon_loot_path = minetest.get_modpath("dungeon_loot")
+
+bones_loot = {}
+
+local bones_formspec =
+	"size[8,9]"
+	.."list[current_name;main;0,0.3;8,4;]"
+	.."list[current_player;main;0,4.85;8,1;]"
+	.."list[current_player;main;0,6.08;8,3;8]"
+	.."listring[current_name;main]"
+	.."listring[current_player;main]"
+	..df_dependencies.get_itemslot_bg(0,0.3,8,4)
+	..df_dependencies.get_itemslot_bg(0,4.85,8,1)
+	..df_dependencies.get_itemslot_bg(0,6.08,8,3)
+if minetest.get_modpath("default") then
+	bones_formspec = bones_formspec .. default.get_hotbar_bg(0,4.85)
+end
+
+if minetest.get_modpath("bones") then
+	df_dependencies.node_name_bones = "bones:bones"
+else
+
+	local function drop_item_stack(pos, stack)
+		if not stack or stack:is_empty() then return end
+		local drop_offset = vector.new(math.random() - 0.5, 0, math.random() - 0.5)
+		minetest.add_item(vector.add(pos, drop_offset), stack)
+	end
+
+	minetest.register_node("bones_loot:bones", {
+		description = S("Bones"),
+		tiles = {
+			"bones_top.png^[transform2",
+			"bones_bottom.png",
+			"bones_side.png",
+			"bones_side.png",
+			"bones_rear.png",
+			"bones_front.png"
+		},
+		paramtype2 = "facedir",
+		groups = {oddly_diggable_by_hand=1, handy=1, container=2},
+		sounds = df_dependencies.sound_gravel(),
+		_mcl_hardness = 1.5,
+		_mcl_blast_resistance = 6,
+		can_dig = function(pos, player)
+			local inv = minetest.get_meta(pos):get_inventory()
+			return inv:is_empty("main")
+		end,
+	
+		on_construct = function(pos)
+			local meta = minetest.get_meta(pos)
+			meta:set_string("formspec", bones_formspec)
+			local inv = meta:get_inventory()
+			inv:set_size("main", 8*4)
+		end,
+
+		on_blast = function(pos, intensity)
+			local meta = minetest.get_meta(pos)
+			local inv = meta:get_inventory()
+			for i = 1, inv:get_size("main") do
+				drop_item_stack(pos, inv:get_stack("main", i))
+			end
+			meta:from_table()
+			minetest.remove_node(pos)
+			if math.random(1, math.floor((intensity or 1) * 2)) ~= 1 then return end
+			drop_item_stack(pos, "bones_loot:bones")
+		end
+	})
+
+	df_dependencies.node_name_bones = "bones_loot:bones"
+end
+
+local bones_node = df_dependencies.node_name_bones
+
+local local_loot = {}
+local local_loot_register = function(t)
+	if t.name ~= nil then
+		t = {t} -- single entry
+	end
+	for _, loot in ipairs(t) do
+		table.insert(local_loot, loot)
+	end
+end
+
+-- we could do this for the dungeon_loot registered loot table as well,
+-- but best not to meddle in other mods' internals if it can be helped.
+local clean_up_local_loot = function()
+	if local_loot == nil then return end
+	for i = #local_loot, 1, -1 do
+		if not minetest.registered_items[local_loot[i].name] then
+			table.remove(local_loot, i)
+		end
+	end
+end
+
+-- Uses same table format as dungeon_loot
+-- eg, 	{name = "bucket:bucket_water", chance = 0.45, types = {"sandstone", "desert"}},
+-- if dungeon_loot is installed it uses dungeon_loot's registration function directly.
+if dungeon_loot_path then
+	bones_loot.register_loot = dungeon_loot.register
+else
+	bones_loot.register_loot = local_loot_register
+	minetest.after(0, clean_up_local_loot)
+end
+
+local get_loot_list = function(pos, loot_type, exclusive_loot_type)
+	local loot_table
+	if dungeon_loot_path then
+		loot_table = dungeon_loot.registered_loot
+	else
+		loot_table = local_loot
+	end
+	
+	local item_list = {}
+	local pos_y = pos.y
+	for _, loot in ipairs(loot_table) do
+		if loot.y == nil or (pos_y >= loot.y[1] and pos_y <= loot.y[2]) then
+			if (not exclusive_loot_type and loot.types == nil) or
+				(loot.types and table.indexof(loot.types, loot_type) ~= -1) then
+				table.insert(item_list, loot)
+			end
+		end
+	end
+
+	return item_list
+end
+
+local shuffle = function(tbl)
+	for i = #tbl, 2, -1 do
+		local rand = math.random(i)
+		tbl[i], tbl[rand] = tbl[rand], tbl[i]
+	end
+	return tbl
+end
+
+-- "exclusive" set to true means that loot table entries without a loot_type won't be considered.
+bones_loot.get_loot = function(pos, loot_type, max_stacks, exclusive_loot_type)
+	local item_list = get_loot_list(pos, loot_type, exclusive_loot_type)
+	shuffle(item_list)
+	
+	-- apply chances / randomized amounts and collect resulting items
+	local items = {}
+	for _, loot in ipairs(item_list) do
+		if math.random() <= loot.chance then
+			local itemdef = minetest.registered_items[loot.name]
+			if itemdef then
+				local amount = 1
+				if loot.count ~= nil then
+					amount = math.random(loot.count[1], loot.count[2])
+				end
+			
+				if itemdef.tool_capabilities then
+					for n = 1, amount do
+						local wear = math.random(0.20 * 65535, 0.75 * 65535) -- 20% to 75% wear
+						table.insert(items, ItemStack({name = loot.name, wear = wear}))
+						max_stacks = max_stacks - 1
+						if max_stacks <= 0 then break end
+					end
+				else
+					local stack_max = itemdef.stack_max
+					while amount > 0 do
+						table.insert(items, ItemStack({name = loot.name, count = math.min(stack_max, amount)}))
+						amount = amount - stack_max
+						max_stacks = max_stacks - 1
+						if max_stacks <= 0 then break end
+					end
+				end
+			end
+		end
+		if max_stacks <= 0 then break end
+	end	
+	return items
+end
+
+bones_loot.place_bones = function(pos, loot_type, max_stacks, infotext, exclusive_loot_type)
+	minetest.set_node(pos, {name=bones_node, param2 = math.random(1,4)-1})
+	local meta = minetest.get_meta(pos)
+	if infotext == nil then
+		infotext = S("Someone's old bones")
+	end
+	meta:set_string("infotext", infotext)
+	meta:set_string("formspec", bones_formspec)
+	
+	if max_stacks and max_stacks > 0 then
+		local loot = bones_loot.get_loot(pos, loot_type, max_stacks, exclusive_loot_type)
+		local inv = meta:get_inventory()
+		inv:set_size("main", 8 * 4)
+		for _, item in ipairs(loot) do
+			inv:add_item("main", item)
+		end
+	end
+end
+
+minetest.register_lbm({
+	label = "Repair underworld bones formspec",
+	name = "bones_loot:repair_underworld_bones_formspec",
+	nodenames = {bones_node},	
+	action = function(pos, node)
+		local meta = minetest.get_meta(pos)
+		if not meta:get("formspec") then
+			meta:set_string("formspec", bones_formspec)
+		end	
+	end,
+})

mods/dfcaverns/bones_loot/locale/bones_loot.de.tr

@@ -0,0 +1,19 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=Knochen
+#WARNING: AUTOTRANSLATED BY GOOGLE TRANSLATE
+Someone's old bones=Jemandes alte Knochen
+
+
+##### not used anymore #####
+
+@1's old bones=Alte Knochen von @1
+@1 died at @2.=@1 starb bei @2.
+@1 died at @2, and dropped their inventory.=@1 starb bei @2 und ließ das Inventar fallen.
+@1 died at @2, and bones were placed.=@1 starb bei @2 und Knochen wurden platziert.
+@1's fresh bones=Frische Knochen von @1
+@1's bones=Knochen von @1

mods/dfcaverns/bones_loot/locale/bones_loot.eo.tr

@@ -0,0 +1,18 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=Ostoj
+Someone's old bones=
+
+
+##### not used anymore #####
+
+@1's old bones=La malfreŝaj ostoj de @1
+@1 died at @2.=@1 mortis ĉe @2
+@1 died at @2, and dropped their inventory.=@1 mortis ĉe @2, kaj delasis sian stokon.
+@1 died at @2, and bones were placed.=@1 mortis ĉe @2, kaj ostoj estas demetitaj.
+@1's fresh bones=La freŝaj ostoj de @1
+@1's bones=La ostoj de @1

mods/dfcaverns/bones_loot/locale/bones_loot.es.tr

@@ -0,0 +1,18 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=Huesos
+Someone's old bones=
+
+
+##### not used anymore #####
+
+@1's old bones=Huesos antiguos de @1
+@1 died at @2.=@1 murió en @2.
+@1 died at @2, and dropped their inventory.=@1 murió en @2, y su inventario se desprendió.
+@1 died at @2, and bones were placed.=@1 murió en @2, y sus huesos fueron depositados.
+@1's fresh bones=Huesos recientes de @1
+@1's bones=Huesos de @1

mods/dfcaverns/bones_loot/locale/bones_loot.fr.tr

@@ -0,0 +1,18 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=Os
+Someone's old bones=
+
+
+##### not used anymore #####
+
+@1's old bones=Vieux os de @1
+@1 died at @2.=@1 est mort à @2.
+@1 died at @2, and dropped their inventory.=@1 est mort à @2 et a laissé tomber son inventaire.
+@1 died at @2, and bones were placed.=@1 est mort à @2 et ses os ont été placés.
+@1's fresh bones=Os frais de @1
+@1's bones=Os de @1

mods/dfcaverns/bones_loot/locale/bones_loot.id.tr

@@ -0,0 +1,18 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=Tulang
+Someone's old bones=
+
+
+##### not used anymore #####
+
+@1's old bones=Tulang lama @1
+@1 died at @2.=@1 mati di @2.
+@1 died at @2, and dropped their inventory.=@1 mati di @2 dan meninggalkan barangnya.
+@1 died at @2, and bones were placed.=@1 mati di @2 dan tulangnya diletakkan.
+@1's fresh bones=Tulang segar @1
+@1's bones=Tulang @1

mods/dfcaverns/bones_loot/locale/bones_loot.it.tr

@@ -0,0 +1,19 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=Ossa
+#WARNING: AUTOTRANSLATED BY GOOGLE TRANSLATE
+Someone's old bones=Le vecchie ossa di qualcuno
+
+
+##### not used anymore #####
+
+@1's old bones=Ossa vecchie di @1
+@1 died at @2.=@1 è morto alla posizione @2.
+@1 died at @2, and dropped their inventory.=@1 è morto alla posizione @2, e ha lasciato a terra il contenuto del suo inventario.
+@1 died at @2, and bones were placed.=@1 è morto alla posizione @2, e vi sono state posizionate delle ossa.
+@1's fresh bones=Ossa fresche di @1
+@1's bones=Ossa di @1

mods/dfcaverns/bones_loot/locale/bones_loot.ja.tr

@@ -0,0 +1,18 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=骨
+Someone's old bones=
+
+
+##### not used anymore #####
+
+@1's old bones=@1の古い骨
+@1 died at @2.=@1は@2で死亡しました。
+@1 died at @2, and dropped their inventory.=@1は@2で死亡して持ち物を落としました。
+@1 died at @2, and bones were placed.=@1は@2で死亡して骨が残されました。
+@1's fresh bones=@1の新鮮な骨
+@1's bones=@1の骨

mods/dfcaverns/bones_loot/locale/bones_loot.jbo.tr

@@ -0,0 +1,18 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=lo bongu gunma
+Someone's old bones=
+
+
+##### not used anymore #####
+
+@1's old bones=.i ti tolci'o ke bongu gunma po'a la'o zo'i.@1.zo'i
+@1 died at @2.=.i la'o zo'i.@1.zo'i  pu morsi di'o lo me zoi pos.@2.pos.
+@1 died at @2, and dropped their inventory.=.i la'o zo'i.@1.zo'i goi ly. pu morsi di'o lo me zoi pos.@2.pos. .ije ly. te farlu lo me le dacti liste po ly.
+@1 died at @2, and bones were placed.=.i la'o zo'i.@1.zo'i goi ly. pu morsi di'o lo me zoi pos.@2.pos. .ije lo bongu gunma pu se punji
+@1's fresh bones=.i ti cnino ke bongu gunma po'a la'o zo'i.@1.zo'i
+@1's bones=.i ti bongu gunma po'a la'o zo'i.@1.zo'i

mods/dfcaverns/bones_loot/locale/bones_loot.ms.tr

@@ -0,0 +1,18 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=Tulang
+Someone's old bones=
+
+
+##### not used anymore #####
+
+@1's old bones=Tulang lama @1
+@1 died at @2.=@1 mati di @2.
+@1 died at @2, and dropped their inventory.=@1 mati di @2, dan menjatuhkan inventorinya.
+@1 died at @2, and bones were placed.=@1 mati di @2, dan tulang diletakkan.
+@1's fresh bones=Tulang segar @1
+@1's bones=Tulang @1

mods/dfcaverns/bones_loot/locale/bones_loot.pl.tr

@@ -0,0 +1,18 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=Kości
+Someone's old bones=
+
+
+##### not used anymore #####
+
+@1's old bones=Stare kości @1
+@1 died at @2.=@1 umarł w @2.
+@1 died at @2, and dropped their inventory.=@1 umarł w @2, i upuścił swój ekwipunek.
+@1 died at @2, and bones were placed.=@1 umarł w @2, kości zostały położone.
+@1's fresh bones=Świeże kości @1
+@1's bones=Kości @1

mods/dfcaverns/bones_loot/locale/bones_loot.pt_BR.tr

@@ -0,0 +1,18 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=Ossos
+Someone's old bones=
+
+
+##### not used anymore #####
+
+@1's old bones=Ossos antigos de @1
+@1 died at @2.=@1 morreu em @2.
+@1 died at @2, and dropped their inventory.=@1 morreu em @2, e seu inventário foi derrubado.
+@1 died at @2, and bones were placed.=@1 morreu em @2, e os ossos foram colocados.
+@1's fresh bones=Ossos recentes de @1
+@1's bones=Ossos de @1

mods/dfcaverns/bones_loot/locale/bones_loot.ru.tr

@@ -0,0 +1,18 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=Кости
+Someone's old bones=
+
+
+##### not used anymore #####
+
+@1's old bones=Старые кости @1
+@1 died at @2.=@1 умер в @2.
+@1 died at @2, and dropped their inventory.=@1 умер в @2 и потерял содержимое своего инвентаря. 
+@1 died at @2, and bones were placed.=@1 умер в @2, помещены кости.
+@1's fresh bones=новые кости @1
+@1's bones=кости @1

mods/dfcaverns/bones_loot/locale/bones_loot.sk.tr

@@ -0,0 +1,18 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=Kosti
+Someone's old bones=
+
+
+##### not used anymore #####
+
+@1's old bones=Staré kosti hráča @1
+@1 died at @2.=@1 zomrel na pozícií @2.
+@1 died at @2, and dropped their inventory.=@1 zomrel na pozícií @2 a vysypal svoj inventár.
+@1 died at @2, and bones were placed.=@1 zomrel na pozícií @2 a ostali po ňom kosti.
+@1's fresh bones=Čerstvé kosti hráča @1
+@1's bones=Kosti hráča  @1

mods/dfcaverns/bones_loot/locale/bones_loot.sv.tr

@@ -0,0 +1,18 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=Ben
+Someone's old bones=
+
+
+##### not used anymore #####
+
+@1's old bones=@1s Gamla ben
+@1 died at @2.=@1 dog på @a.
+@1 died at @2, and dropped their inventory.=@1 dog på @a, och tappade deras saker.
+@1 died at @2, and bones were placed.=@1 dog på @2, och deras ben var placerade.
+@1's fresh bones=@1s färska ben
+@1's bones=@1s ben

mods/dfcaverns/bones_loot/locale/bones_loot.uk.tr

@@ -0,0 +1,18 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=Кістки
+Someone's old bones=
+
+
+##### not used anymore #####
+
+@1's old bones=старі кістки @1
+@1 died at @2.=@1 помер в @2.
+@1 died at @2, and dropped their inventory.=@1 помер в @2, та загубив вміст свого інвентарю.
+@1 died at @2, and bones were placed.=@1 помер в @2, розміщені кістки.
+@1's fresh bones=нові кістки @1
+@1's bones=кістки @1

mods/dfcaverns/bones_loot/locale/bones_loot.zh_CN.tr

@@ -0,0 +1,18 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=骨骸
+Someone's old bones=
+
+
+##### not used anymore #####
+
+@1's old bones=@1的旧骨骸
+@1 died at @2.=@1在@2死亡。
+@1 died at @2, and dropped their inventory.=@1在@2死亡，丢掉了所有物品。
+@1 died at @2, and bones were placed.=@1在@2死亡，已放置骨骸。
+@1's fresh bones=@1的新鲜骨骸
+@1's bones=@1的骨骸

mods/dfcaverns/bones_loot/locale/bones_loot.zh_TW.tr

@@ -0,0 +1,18 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=骨骸
+Someone's old bones=
+
+
+##### not used anymore #####
+
+@1's old bones=@1的舊骨骸
+@1 died at @2.=@1在@2死亡。
+@1 died at @2, and dropped their inventory.=@1在@2死亡，丟掉了物品欄。
+@1 died at @2, and bones were placed.=@1在@2死亡，骨骸被放置。
+@1's fresh bones=@1的新鮮骨骸
+@1's bones=@1的骨骸

mods/dfcaverns/bones_loot/locale/template.txt

@@ -0,0 +1,8 @@
+# textdomain: bones_loot
+
+
+### init.lua ###
+
+# textdomain: bones
+Bones=
+Someone's old bones=

mods/dfcaverns/bones_loot/mod.conf

@@ -0,0 +1,4 @@
+name = bones_loot
+description = An API that allows bones to be placed procedurally with randomly generated loot
+depends = df_dependencies
+optional_depends = dungeon_loot, bones

mods/dfcaverns/bones_loot/textures/bones_license.txt

@@ -0,0 +1,58 @@
+License of source code
+----------------------
+
+The MIT License (MIT)
+Copyright (C) 2012-2016 PilzAdam
+Copyright (C) 2012-2016 Various Minetest developers and contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this
+software and associated documentation files (the "Software"), to deal in the Software
+without restriction, including without limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of the Software, and to permit
+persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or
+substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+
+For more details:
+https://opensource.org/licenses/MIT
+
+
+Licenses of media (textures)
+----------------------------
+
+Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
+Copyright (C) 2016 paramat
+
+You are free to:
+Share — copy and redistribute the material in any medium or format.
+Adapt — remix, transform, and build upon the material for any purpose, even commercially.
+The licensor cannot revoke these freedoms as long as you follow the license terms.
+
+Under the following terms:
+
+Attribution — You must give appropriate credit, provide a link to the license, and
+indicate if changes were made. You may do so in any reasonable manner, but not in any way
+that suggests the licensor endorses you or your use.
+
+ShareAlike — If you remix, transform, or build upon the material, you must distribute
+your contributions under the same license as the original.
+
+No additional restrictions — You may not apply legal terms or technological measures that
+legally restrict others from doing anything the license permits.
+
+Notices:
+
+You do not have to comply with the license for elements of the material in the public
+domain or where your use is permitted by an applicable exception or limitation.
+No warranties are given. The license may not give you all of the permissions necessary
+for your intended use. For example, other rights such as publicity, privacy, or moral
+rights may limit how you use the material.
+

mods/dfcaverns/chasms/LICENSE.txt

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021 FaceDeer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

mods/dfcaverns/chasms/init.lua

@@ -0,0 +1,190 @@
+local data = {}
+
+chasms = {}
+
+local ignore = {}
+
+-- Use this to set node types to be left alone by chasm-carving
+chasms.register_ignore = function(node_name)
+	ignore[minetest.get_content_id(node_name)] = true
+end
+
+chasms.ignore_content_id = function(content_id)
+	return ignore[content_id]
+end
+
+local maxy = tonumber(minetest.settings:get("chasms_maxy")) or -50
+local miny = tonumber(minetest.settings:get("chasms_miny")) or -2500
+local falloff = tonumber(minetest.settings:get("chasms_falloff")) or 100
+
+local web_probability = 0.15 -- the chance that a given mapblock will have webbing criss-crossing the chasm
+
+local chasms_threshold = tonumber(minetest.settings:get("chasms_threshold")) or 0.9
+local np_chasms_default = {
+	offset = 0,
+	scale = 1,
+	spread = {x = 50, y = 1000, z = 3000},
+	seed = 94586,
+	octaves = 2,
+	persist = 0.63,
+	lacunarity = 2.0,
+}
+local np_chasms = minetest.settings:get_np_group("chasms_params") or np_chasms_default
+-- For some reason, these numbers are returned as strings by get_np_group.
+local tonumberize_params = function(params)
+	params.scale = tonumber(params.scale)
+	params.lacunarity = tonumber(params.lacunarity)
+	params.spread.x = tonumber(params.spread.x)
+	params.spread.y = tonumber(params.spread.y)
+	params.spread.z = tonumber(params.spread.z)
+	params.offset = tonumber(params.offset)
+	params.persistence = tonumber(params.persistence)
+end
+tonumberize_params(np_chasms)
+local nobj_chasm
+local chasm_data = {}
+
+local waver_strength = 8
+local waver_vector = {x=waver_strength, y=0, z=0}
+local np_waver = {
+	offset = 0,
+	scale = waver_strength,
+	spread = {x = 50, y = 50, z = 50},
+	seed = 49585,
+	octaves = 2,
+	persist = 0.63,
+	lacunarity = 2.0,
+}
+local nobj_waver
+local waver_data = {}
+
+local minfalloff = miny + falloff
+local maxfalloff = maxy - falloff
+local get_intensity = function(y)
+	if y < miny or y > maxy then
+		return 0
+	end
+	if y <= maxfalloff and y >= minfalloff then
+		return 1
+	end
+	if y < minfalloff then
+		return (y-miny)/falloff
+	end
+--	if y > maxfalloff then
+	return (maxy-y)/falloff
+--	end
+end
+
+local c_air = minetest.get_content_id("air")
+local c_web
+
+local log_location
+if mapgen_helper.log_location_enabled then
+	log_location = mapgen_helper.log_first_location
+end
+
+local big_webs_path = minetest.get_modpath("big_webs")
+if big_webs_path then
+	c_web = minetest.get_content_id("big_webs:webbing")
+end
+
+local z_displace = 10000
+
+
+local calculate_web_array = function(minp, maxp)
+	local seed = math.random()*10000000
+	math.randomseed(minp.y + z_displace*minp.z) -- use consistent seeds across the x axis
+	local webs = {}
+	for count = 1, math.random(5,20) do
+		local width = math.random(5, 25)
+		local direction_vertical = math.random() > 0.5
+		local web_y = math.random(minp.y+8, maxp.y-8)
+		local web_z = math.random(minp.z+8, maxp.z-8)
+		for i = -math.floor(width/2), math.ceil(width/2) do
+			if direction_vertical then
+				webs[(web_y+i) + web_z*z_displace] = true
+			else
+				webs[web_y + (web_z+i)*z_displace] = true
+			end
+		end
+	end
+	math.randomseed(seed)
+	return webs
+end
+
+minetest.register_on_generated(function(minp, maxp, seed)
+	if minp.y >= maxy or maxp.y <= miny then
+		return
+	end
+	
+	-- check if webs are present
+	local webs
+	local webs_present = false
+	if big_webs_path then
+		local seed = math.random()*10000000
+		math.randomseed(minp.y + z_displace*minp.z) -- use consistent seeds across the x axis
+		if math.random() < web_probability then
+			webs_present = true
+		end
+		math.randomseed(seed)
+	end
+	
+	local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
+	vm:get_data(data)
+
+	nobj_chasm = nobj_chasm or minetest.get_perlin_map(np_chasms, {x = emax.x - emin.x + 1 + waver_strength*2, y = emax.y - emin.y + 1, z = emax.z - emin.z + 1})
+	nobj_chasm:get_3d_map_flat(vector.subtract(emin, waver_vector), chasm_data)
+
+	nobj_waver = nobj_waver or minetest.get_perlin_map(np_waver, {x = emax.x - emin.x + 1, y = emax.y - emin.y + 1, z = emax.z - emin.z + 1})
+	nobj_waver:get_3d_map_flat(emin, waver_data)
+
+	local chasm_area = VoxelArea:new{MinEdge = vector.subtract(emin, waver_vector), MaxEdge = vector.add(emax, waver_vector)}
+	local data_area = VoxelArea:new{MinEdge = emin, MaxEdge = emax}
+
+	for i, x, y, z in data_area:iterp_xyz(emin, emax) do
+		local waver = math.min(math.max(math.floor(waver_data[i]+0.5), -waver_strength), waver_strength)
+		local intensity = get_intensity(y)
+		if chasm_data[chasm_area:index(x+waver, y, z)]*intensity > chasms_threshold then
+			if not ignore[data[i]] then
+				if webs_present then
+					webs = webs or calculate_web_array(minp, maxp) -- only calculate webs when we know we're in a chasm
+					if webs[y + z*z_displace] and math.random() < 0.85 then -- random holes in the web
+						data[i] = c_web
+						local web_pos = vector.new(x,y,z)
+						minetest.get_node_timer(web_pos):start(1) -- this timer will check for unsupported webs
+						if log_location then log_location("chasm_web", web_pos) end
+					else
+						data[i] = c_air
+					end
+				else
+					data[i] = c_air
+				end
+				if log_location then log_location("chasm", vector.new(x,y,z)) end
+			end
+		end
+	end
+	
+	vm:set_data(data)
+	vm:calc_lighting()
+	vm:write_to_map()
+end)
+
+local nobj_local_chasm = minetest.get_perlin(np_chasms)
+local nobj_local_waver = minetest.get_perlin(np_waver)
+
+chasms.is_in_chasm = function(pos)
+	nobj_local_chasm = nobj_local_chasm or minetest.get_perlin(np_chasms)
+	nobj_local_waver = nobj_local_waver or minetest.get_perlin(np_waver)
+	local waver = math.min(math.max(math.floor(nobj_local_waver:get_3d(pos)+0.5), -waver_strength), waver_strength)
+	local chasm_value = nobj_local_chasm:get_3d({x=pos.x+waver, y=pos.y, z=pos.z})
+	return chasm_value*get_intensity(pos.y) > chasms_threshold
+end
+
+-- A little cheaper to run, for mapgens that know they don't have to worry about the tops and bottoms of chasms
+chasms.is_in_chasm_without_taper = function(pos)
+	nobj_local_chasm = nobj_local_chasm or minetest.get_perlin(np_chasms)
+	nobj_local_waver = nobj_local_waver or minetest.get_perlin(np_waver)
+	local waver = math.min(math.max(math.floor(nobj_local_waver:get_3d(pos)+0.5), -waver_strength), waver_strength)
+	local chasm_value = nobj_local_chasm:get_3d({x=pos.x+waver, y=pos.y, z=pos.z})
+	return chasm_value > chasms_threshold
+end

mods/dfcaverns/chasms/mod.conf

@@ -0,0 +1,3 @@
+name=chasms
+depends=mapgen_helper
+optional_depends=big_webs

mods/dfcaverns/chasms/settingtypes.txt

@@ -0,0 +1,5 @@
+chasms_params (Noise params for chasms) noise_params_3d 0, 1, (50, 1000, 3000), 94586, 2, 0.63, 2.0
+chasms_threshold (Noise threshold for chasms) float 0.9
+chasms_maxy (Maximum Y) int -50
+chasms_miny (Minimum Y) int -2500
+chasms_falloff (Taper range when approaching max or min) int 100

mods/dfcaverns/description.txt

@@ -0,0 +1 @@
+Adds vast underground caverns in the style of Dwarf Fortress, complete with underground flora in diverse biomes.

mods/dfcaverns/df_achievements/dig.lua

@@ -0,0 +1,164 @@
+local S = minetest.get_translator(minetest.get_current_modname())
+
+local steel_pick = df_dependencies.texture_tool_steelpick
+local steel_shovel = df_dependencies.texture_tool_steelshovel
+
+local crossed_pick_and_shovel = "((("..steel_shovel.."^[transformFX)^"..steel_pick..")^[resize:32x32)"
+
+local gas_seep = "(("..df_dependencies.texture_stone.."^"..df_dependencies.texture_mineral_coal.."^[combine:16x80:0,-16=crack_anylength.png)^[resize:32x32)"
+
+awards.register_achievement("dfcaverns_destroyed_gas_seep", {
+	title = S("Destroy a Gas Seep"),
+	description = S("Plug a crack that mine gas is seeping out of to make the caves just a little bit safer."),
+	icon = "dfcaverns_awards_backgroundx32.png^" .. gas_seep .."^dfcaverns_awards_foregroundx32.png",
+	difficulty = 2,
+	trigger = {
+		type = "dig",
+		node = "mine_gas:gas_seep",
+		target = 1
+	},
+})
+
+awards.register_achievement("dfcaverns_giant_web", {
+	title = S("Collect Giant Webbing"),
+	description = S("Collect a piece of giant webbing found in a cave."),
+	icon ="dfcaverns_awards_backgroundx32.png^big_webs_item.png^dfcaverns_awards_foregroundx32.png",
+	difficulty = 1,
+	trigger = {
+		type = "dig",
+		node = "big_webs:webbing",
+		target = 1
+	},
+})
+
+-- too common
+--awards.register_achievement("dfcaverns_glow_worms", {
+--	title = S("Collect Glow Worms"),
+--	description = S(""),
+--	icon =,
+--	trigger = {
+--		type = "dig",
+--		node = "df_mapitems:glow_worm",
+--		target = 1
+--	},
+--})
+
+---------------------------------------------------------------
+
+awards.register_achievement("dfcaverns_cave_pearls", {
+	title = S("Collect Cave Pearls"),
+	description = S("Collect some cave pearls from the wall of a cave."),
+	icon = "dfcaverns_awards_backgroundx32.png^dfcaverns_cave_pearls_achievement.png^dfcaverns_awards_foregroundx32.png",
+	difficulty = 1,
+	trigger = {
+		type = "dig",
+		node = "df_mapitems:cave_pearls",
+		target = 1
+	},
+	_dfcaverns_achievements = {"dfcaverns_prospector"},
+})
+
+awards.register_achievement("dfcaverns_castle_coral", {
+	title = S("Collect Castle Coral"),
+	description = S("Collect a piece of Castle Coral from the Sunless Sea."),
+	icon ="dfcaverns_awards_backgroundx32.png^dfcaverns_castle_coral_achievement.png^dfcaverns_awards_foregroundx32.png",
+	trigger = {
+		type = "dig",
+		node = "df_mapitems:castle_coral",
+		target = 1
+	},
+	difficulty = 2,
+	_dfcaverns_achievements = {"dfcaverns_prospector"},
+})
+
+awards.register_achievement("dfcaverns_ruby_crystals", {
+	title = S("Collect Giant Red Crystal"),
+	description = S("Collect one of the giant red crystals found in large barren caverns."),
+	icon ="dfcaverns_awards_backgroundx32.png^dfcaverns_big_red_crystal_achievement.png^dfcaverns_awards_foregroundx32.png",
+	trigger = {
+		type = "dig",
+		node = "group:dfcaverns_big_crystal",
+		target = 1
+	},
+	difficulty = 1,
+	_dfcaverns_achievements = {"dfcaverns_prospector"},
+})
+
+awards.register_achievement("dfcaverns_cave_coral", {
+	title = S("Collect Cave Coral"),
+	description = S("Collect a piece of Cave Coral from the Sunless Sea."),
+	icon ="dfcaverns_awards_backgroundx32.png^dfcaverns_cave_coral_achievement.png^dfcaverns_awards_foregroundx32.png",
+	trigger = {
+		type = "dig",
+		node = "group:dfcaverns_cave_coral",
+		target = 1
+	},
+	difficulty = 1,
+	_dfcaverns_achievements = {"dfcaverns_prospector"},
+})
+
+awards.register_achievement("dfcaverns_flawless_mese", {
+	title = S("Collect Flawless Mese Crystal Block"),
+	description = S("Collect a flawless Mese crystal block from the Magma Sea."),
+	icon ="dfcaverns_awards_backgroundx32.png^dfcaverns_glowmese_achievement.png^dfcaverns_awards_foregroundx32.png",
+	trigger = {
+		type = "dig",
+		node = "df_mapitems:glow_mese",
+		target = 1
+	},
+	difficulty = 3,
+	_dfcaverns_achievements = {"dfcaverns_prospector"},
+})
+
+awards.register_achievement("dfcaverns_luminous_salt", {
+	title = S("Collect Luminous Salt Crystal"),
+	description = S("Collect a luminous salt crystal from the dry caverns where Bloodthorns live."),
+	icon ="dfcaverns_awards_backgroundx32.png^dfcaverns_salt_achievement.png^dfcaverns_awards_foregroundx32.png",
+	trigger = {
+		type = "dig",
+		node = "df_mapitems:salt_crystal",
+		target = 1
+	},
+	difficulty = 1,
+	_dfcaverns_achievements = {"dfcaverns_prospector"},
+})
+
+awards.register_achievement("dfcaverns_glow_amethyst", {
+	title = S("Collect Glowing Amethyst"),
+	description = S("Collect a block of glowing amethyst crystal from the Underworld."),
+	icon ="dfcaverns_awards_backgroundx32.png^dfcaverns_amethyst_achievement.png^dfcaverns_awards_foregroundx32.png",
+	trigger = {
+		type = "dig",
+		node = "df_underworld_items:glow_amethyst",
+		target = 1
+	},
+	difficulty = 2,
+	_dfcaverns_achievements = {"dfcaverns_prospector"},
+})
+
+awards.register_achievement("dfcaverns_glow_stone", {
+	title = S('"Collect" Lightseam Stone'),
+	description = S("Attempt to collect a piece of Lightseam, a strange glowing mineral found deep underground."),
+	icon ="dfcaverns_awards_backgroundx32.png^dfcaverns_glowstone_achievement.png^dfcaverns_awards_foregroundx32.png",
+	trigger = {
+		type = "dig",
+		node = "df_underworld_items:glowstone",
+		target = 1
+	},
+	difficulty = 2,
+	_dfcaverns_achievements = {"dfcaverns_prospector"},
+})
+
+------------------------------------------------------------------
+
+awards.register_achievement("dfcaverns_prospector", {
+	title = S("Deep Prospector"),
+	description = S("Collect various different exotic items from various caverns."),
+	icon = "dfcaverns_awards_backgroundx32.png^"..crossed_pick_and_shovel.."^dfcaverns_awards_foregroundx32.png",
+	difficulty = 3 / df_achievements.get_child_achievement_count("dfcaverns_prospector"),
+	trigger = {
+		type="dfcaverns_achievements",
+		achievement_name="dfcaverns_prospector",
+		target=df_achievements.get_child_achievement_count("dfcaverns_prospector"),
+	},
+})

mods/dfcaverns/df_achievements/farming.lua

@@ -0,0 +1,154 @@
+local S = minetest.get_translator(minetest.get_current_modname())
+local nethercap_name = df_dependencies.nethercap_name
+
+local hoe_texture = df_dependencies.texture_tool_steelhoe
+local soil_texture = df_dependencies.texture_farming_soil
+local ice_texture = df_dependencies.texture_ice
+local coal_ore = "(".. df_dependencies.texture_stone .."^".. df_dependencies.texture_mineral_coal ..")"
+
+local make_texture = function(plant_texture, bg_tex)
+	bg_tex = bg_tex or soil_texture
+	return "dfcaverns_awards_backgroundx32.png^[combine:32x32:3,4="..bg_tex.."^[combine:32x32:3,2="..plant_texture.."^[combine:32x32:14,13="..hoe_texture.."^dfcaverns_awards_foregroundx32.png"
+end
+
+-- forestry
+
+local plant_node_achievements =
+{
+	["df_trees:black_cap_sapling"] = {achievement="dfcaverns_plant_black_cap",
+		title=S("Plant Black Cap"), icon=make_texture("dfcaverns_black_cap_sapling.png", coal_ore), _dfcaverns_achievements={"dfcaverns_plant_all_upper_trees", "dfcaverns_plant_all_underground_trees"}, difficulty = 1,},
+	["df_trees:fungiwood_sapling"] = {achievement="dfcaverns_plant_fungiwood",
+		title=S("Plant Fungiwood"), icon=make_texture("dfcaverns_fungiwood_sapling.png"), _dfcaverns_achievements={"dfcaverns_plant_all_upper_trees", "dfcaverns_plant_all_underground_trees"}, difficulty = 1,},
+	["df_trees:goblin_cap_sapling"] = {achievement="dfcaverns_plant_goblin_cap",
+		title=S("Plant Goblin Cap"), icon=make_texture("dfcaverns_goblin_cap_sapling.png"), _dfcaverns_achievements={"dfcaverns_plant_all_upper_trees", "dfcaverns_plant_all_underground_trees"}, difficulty = 1,},
+	["df_trees:nether_cap_sapling"] = {achievement="dfcaverns_plant_nethercap",
+		title=S("Plant @1", nethercap_name), icon=make_texture("dfcaverns_nether_cap_sapling.png", ice_texture), _dfcaverns_achievements={"dfcaverns_plant_all_upper_trees", "dfcaverns_plant_all_underground_trees"}, difficulty = 1,},
+	["df_trees:spore_tree_sapling"] = {achievement="dfcaverns_plant_spore_tree",
+		title=S("Plant Spore Tree"), icon=make_texture("dfcaverns_spore_tree_sapling.png"), _dfcaverns_achievements={"dfcaverns_plant_all_upper_trees", "dfcaverns_plant_all_underground_trees"}, difficulty = 1,},
+	["df_trees:tower_cap_sapling"] = {achievement="dfcaverns_plant_tower_cap",
+		title=S("Plant Tower Cap"), icon=make_texture("dfcaverns_tower_cap_sapling.png"), _dfcaverns_achievements={"dfcaverns_plant_all_upper_trees", "dfcaverns_plant_all_underground_trees"}, difficulty = 1,},
+	["df_trees:tunnel_tube_sapling"] = {achievement="dfcaverns_plant_tunnel_tube",
+		title=S("Plant Tunnel Tube"), icon=make_texture("dfcaverns_tunnel_tube_sapling.png"), _dfcaverns_achievements={"dfcaverns_plant_all_upper_trees", "dfcaverns_plant_all_underground_trees"}, difficulty = 1,},
+	["df_trees:torchspine_ember"] = {achievement="dfcaverns_plant_torchspine",
+		title=S("Plant Torchspine"), icon=make_texture("dfcaverns_torchspine_achievement.png", coal_ore), _dfcaverns_achievements={"dfcaverns_plant_all_upper_trees", "dfcaverns_plant_all_underground_trees"}, difficulty = 1,},
+	["df_trees:spindlestem_seedling"] = {achievement="dfcaverns_plant_spindlestem",
+		title=S("Plant Spindlestem"), icon=make_texture("dfcaverns_spindlestem_achievement.png"), _dfcaverns_achievements={"dfcaverns_plant_all_upper_trees", "dfcaverns_plant_all_underground_trees"}, difficulty = 1,},
+	["df_trees:blood_thorn"] = {achievement="dfcaverns_plant_bloodthorn",
+		title=S("Plant Bloodthorn"), icon=make_texture("dfcaverns_bloodthorn_achievement.png"), _dfcaverns_achievements={"dfcaverns_plant_all_upper_trees", "dfcaverns_plant_all_underground_trees"}, difficulty = 1,},
+	["df_primordial_items:giant_hypha_apical_meristem"] = {achievement="dfcaverns_plant_giant_mycelium",
+		title=S("Plant Primordial Mycelium"), icon=make_texture("dfcaverns_mush_soil.png"), secret = true, _dfcaverns_achievements={"dfcaverns_plant_all_primordial", "dfcaverns_plant_all_underground_trees"}, difficulty = 3,},
+	["df_primordial_items:fern_sapling"] = {achievement="dfcaverns_plant_primordial_fern",
+		title=S("Plant Primordial Fern"), icon=make_texture("dfcaverns_jungle_fern_03.png"), secret = true, _dfcaverns_achievements={"dfcaverns_plant_all_primordial", "dfcaverns_plant_all_underground_trees"}, difficulty = 3,},
+	["df_primordial_items:jungle_mushroom_sapling"] = {achievement="dfcaverns_plant_primordial_jungle_mushroom",
+		title=S("Plant Primordial Jungle Mushroom"), icon=make_texture("dfcaverns_jungle_mushroom_02.png"), secret = true, _dfcaverns_achievements={"dfcaverns_plant_all_primordial", "dfcaverns_plant_all_underground_trees"}, difficulty = 3,},
+	["df_primordial_items:jungletree_sapling"] = {achievement="dfcaverns_plant_primordial_jungletree",
+		title=S("Plant Primordial Jungle Tree"), icon=make_texture("dfcaverns_jungle_sapling.png"), secret = true, _dfcaverns_achievements={"dfcaverns_plant_all_primordial", "dfcaverns_plant_all_underground_trees"}, difficulty = 3,},
+	["df_primordial_items:mush_sapling"] = {achievement="dfcaverns_plant_primordial_mushroom",
+		title=S("Plant Primordial Mushroom"), icon=make_texture("dfcaverns_mush_sapling.png"), secret = true, _dfcaverns_achievements={"dfcaverns_plant_all_primordial", "dfcaverns_plant_all_underground_trees"}, difficulty = 3,},
+	["df_farming:cave_wheat_seed"] = {achievement="dfcaverns_plant_cave_wheat",
+		title=S("Plant Cave Wheat"), icon=make_texture("dfcaverns_cave_wheat_8.png"), _dfcaverns_achievements={"dfcaverns_plant_all_farmables"}, difficulty = 1,},
+	["df_farming:dimple_cup_seed"] = {achievement="dfcaverns_plant_dimple_cup",
+		title=S("Plant Dimple Cup"), icon=make_texture("dfcaverns_dimple_cup_4.png"), _dfcaverns_achievements={"dfcaverns_plant_all_farmables"}, difficulty = 1,},
+	["df_farming:pig_tail_seed"] = {achievement="dfcaverns_plant_pig_tail",
+		title=S("Plant Pig Tail"), icon=make_texture("dfcaverns_pig_tail_8.png"), _dfcaverns_achievements={"dfcaverns_plant_all_farmables"}, difficulty = 1,},
+	["df_farming:plump_helmet_spawn"] = {achievement="dfcaverns_plant_plump_helmet",
+		title=S("Plant Plump Helmet"), icon=make_texture("dfcaverns_plump_helmet_achievement.png"), _dfcaverns_achievements={"dfcaverns_plant_all_farmables"}, difficulty = 1,},
+	["df_farming:quarry_bush_seed"] = {achievement="dfcaverns_plant_quarry_bush",
+		title=S("Plant Quarry Bush"), icon=make_texture("dfcaverns_quarry_bush_5.png"), _dfcaverns_achievements={"dfcaverns_plant_all_farmables"}, difficulty = 1,},
+	["df_farming:sweet_pod_seed"] = {achievement="dfcaverns_plant_sweet_pod",
+		title=S("Plant Sweet Pod"), icon=make_texture("dfcaverns_sweet_pod_6.png"), _dfcaverns_achievements={"dfcaverns_plant_all_farmables"}, difficulty = 1,},
+}
+
+minetest.register_on_placenode(function(pos, newnode, placer, oldnode, itemstack, pointed_thing)
+	if placer == nil then return end
+	local player_name = placer:get_player_name()
+	if player_name == nil then return end
+	local player_awards = awards.player(player_name)
+	local achievement = plant_node_achievements[newnode.name]
+	if not achievement then return end
+	local achievement_name = achievement.achievement
+	if not player_awards.unlocked or player_awards.unlocked[achievement_name] ~= achievement_name then
+		-- all of the growable plants in DFCaverns are timer-based. If you place
+		-- a seedling or seed and the resulting node has a timer running, then
+		-- it's passed the checks to see if it was placed in a growable area.
+		if minetest.get_node_timer(pos):is_started() then
+			awards.unlock(player_name, achievement_name)
+		end
+	end
+end)
+
+for seed_item, def in pairs(plant_node_achievements) do
+	awards.register_achievement(def.achievement, {
+		title = def.title,
+		description = S("Plant a @1 in a place where it can grow.", minetest.registered_items[seed_item].description),
+		icon = def.icon,
+		secret = def.secret,
+		_dfcaverns_achievements = def._dfcaverns_achievements,
+	})
+end
+
+awards.register_achievement("dfcaverns_plant_all_upper_trees", {
+	title = S("Fungal Arborist"),
+	description = S("Plant one of every kind of 'tree' found in the caverns above the Sunless Sea."),
+	icon = "dfcaverns_awards_backgroundx32.png^"
+		.."(dfcaverns_awards_cavern_towercapx32.png^dfcaverns_awards_cavern_fungiwoodx32.png^dfcaverns_awards_cavern_goblincapx32.png)^[transformFX"
+		.."^[combine:32x32:16,15="..hoe_texture.."^dfcaverns_awards_foregroundx32.png",
+	difficulty = 1 / df_achievements.get_child_achievement_count("dfcaverns_plant_all_upper_trees"),
+	trigger = {
+		type="dfcaverns_achievements",
+		achievement_name="dfcaverns_plant_all_upper_trees",
+		target=df_achievements.get_child_achievement_count("dfcaverns_plant_all_upper_trees"),
+	},
+})
+
+awards.register_achievement("dfcaverns_plant_all_primordial", {
+	title = S("Primordial Arborist"),
+	description = S("Plant one of every kind of 'tree' from the Primordial caverns."),
+	icon = "dfcaverns_awards_backgroundx32.png^"
+		.."(dfcaverns_awards_cavern_primordial_mushx32.png^dfcaverns_awards_cavern_junglex32.png)^[transformFX"
+		.."^[combine:32x32:16,15="..hoe_texture.."^dfcaverns_awards_foregroundx32.png",
+	secret = true,
+	difficulty = 3 / df_achievements.get_child_achievement_count("dfcaverns_plant_all_primordial"),
+	trigger = {
+		type="dfcaverns_achievements",
+		achievement_name="dfcaverns_plant_all_primordial",
+		target=df_achievements.get_child_achievement_count("dfcaverns_plant_all_primordial"),
+	},
+})
+
+awards.register_achievement("dfcaverns_plant_all_underground_trees", {
+	title = S("Underground Arborist"),
+	description = S("Plant one of every kind of 'tree' found in the caverns beneath the surface."),
+	icon = "dfcaverns_awards_backgroundx32.png^"
+		.."(dfcaverns_awards_cavern_towercapx32.png^dfcaverns_awards_cavern_fungiwoodx32.png^dfcaverns_awards_cavern_goblincapx32.png)^[transformFX"
+		.. "^dfcaverns_awards_cavern_primordial_mushx32.png^dfcaverns_awards_cavern_junglex32.png"
+		.."^[combine:32x32:16,15="..hoe_texture.."^dfcaverns_awards_foregroundx32.png",
+	difficulty = 4 / df_achievements.get_child_achievement_count("dfcaverns_plant_all_underground_trees"),
+	trigger = {
+		type="dfcaverns_achievements",
+		achievement_name="dfcaverns_plant_all_underground_trees",
+		target=df_achievements.get_child_achievement_count("dfcaverns_plant_all_underground_trees"),
+	},
+})
+
+awards.register_achievement("dfcaverns_plant_all_farmables", {
+	title = S("Underground Farmer"),
+	description = S("Plant one of every kind of small farmable plant found in the caverns beneath the surface."),
+	icon = "dfcaverns_awards_backgroundx32.png"
+		.."^[combine:32x32:0,0="..soil_texture
+		.."^[combine:32x32:0,16="..soil_texture
+		.."^[combine:32x32:16,0="..soil_texture
+		.."^[combine:32x32:16,16="..soil_texture
+		.."^[combine:32x32:0,0=dfcaverns_cave_wheat_8.png"
+		.."^[combine:32x32:16,0=dfcaverns_dimple_cup_4.png"
+		.."^[combine:32x32:8,8=dfcaverns_plump_helmet_achievement.png"
+		.."^[combine:32x32:0,16=dfcaverns_sweet_pod_6.png"
+		.."^[combine:32x32:16,16=dfcaverns_quarry_bush_5.png"		
+		.."^[combine:32x32:16,15="..hoe_texture.."^dfcaverns_awards_foregroundx32.png",
+	difficulty = 1 / df_achievements.get_child_achievement_count("dfcaverns_plant_all_farmables"),
+	trigger = {
+		type="dfcaverns_achievements",
+		achievement_name="dfcaverns_plant_all_farmables",
+		target=df_achievements.get_child_achievement_count("dfcaverns_plant_all_farmables"),
+	},
+})

mods/dfcaverns/df_achievements/food.lua

@@ -0,0 +1,88 @@
+local S = minetest.get_translator(minetest.get_current_modname())
+
+for itemname, def in pairs(minetest.registered_items) do
+	--"df_farming:"..item_name.."_"..recipe_type.name.."_meal"
+	if string.sub(itemname, 1, 11) == "df_farming:" and string.sub(itemname, -5, -1) == "_meal" then
+		local meal_name = string.sub(itemname, 12, -1)
+		local meal_desc = def.description
+		local image = string.sub(def.inventory_image, 1, -7) .. "32.png"
+	
+		awards.register_achievement("dfcaverns_meal_"..meal_name, {
+			title = S("Eat @1", meal_desc),
+			description = S("One of the many delights that can be crafted only from fungal growths found deep underground."),
+			icon = "dfcaverns_awards_backgroundx32.png^" .. image .. "^dfcaverns_awards_foregroundx32.png",
+			trigger = {
+				type = "eat",
+				item = itemname,
+				target = 1
+			},
+			difficulty = 2,
+			_dfcaverns_achievements = {"dfcaverns_gourmand"},
+		})
+	end
+end
+
+local bread_def = minetest.registered_items["df_farming:cave_bread"]
+awards.register_achievement("dfcaverns_meal_dwarven_bread", {
+	title = S("Eat @1", bread_def.description),
+	description = S("It's a basic staple of the underground, but at least it's not Plump Helmet."),
+	icon = "dfcaverns_awards_backgroundx32.png^dfcaverns_prepared_food13x32.png^dfcaverns_awards_foregroundx32.png",
+	trigger = {
+		type = "eat",
+		item = "df_farming:cave_bread",
+		target = 1,
+	},
+	difficulty = 1,
+	_dfcaverns_achievements = {"dfcaverns_gourmand"},
+})
+
+awards.register_achievement("dfcaverns_gourmand", {
+	title = S("Dwarven Gourmand"),
+	description = S("Eat one of each of the various meals that can be cooked or crafted from underground ingredients."),
+	icon ="dfcaverns_awards_backgroundx32.png^dfcaverns_prepared_food28x32.png^dfcaverns_gourmand_achievement.png^dfcaverns_awards_foregroundx32.png",
+	difficulty = 2 / df_achievements.get_child_achievement_count("dfcaverns_gourmand"),
+	trigger = {
+		type="dfcaverns_achievements",
+		achievement_name="dfcaverns_gourmand",
+		target=df_achievements.get_child_achievement_count("dfcaverns_gourmand"),
+	},
+})
+
+if minetest.get_modpath("df_primordial_items") then
+	awards.register_achievement("dfcaverns_primordial_fruit", {
+		title = S("Eat a Primordial Fruit"),
+		description = S("Eat one of the strange fruits found only deep underground in the Primordial caverns."),
+		icon ="dfcaverns_awards_backgroundx32.png^dfcaverns_primordial_fruit.png^dfcaverns_awards_foregroundx32.png",
+		difficulty = 3,
+		trigger = {
+			type = "eat",
+			item = "df_primordial_items:primordial_fruit",
+			target = 1
+		},
+		secret = true,
+	})
+
+	awards.register_achievement("dfcaverns_glowtato", {
+		title = S("Eat a Glowtato"),
+		description = S("Slightly less prestigious than the Primordial Fruit, but still rare and exotic compared to surface world fare."),
+		icon ="dfcaverns_awards_backgroundx32.png^dfcaverns_glowtato.png^dfcaverns_awards_foregroundx32.png",
+		difficulty = 3,
+		trigger = {
+			type = "eat",
+			item = "df_primordial_items:glowtato",
+			target = 1
+		},
+	})
+
+-- too mundane compared to the other achievements
+--	awards.register_achievement("dfcaverns_diced_mushroom", {
+--		title = S("Eat Diced Mushroom"),
+--		description = S(""),
+--		icon =,
+--		trigger = {
+--			type = "eat",
+--			item = "df_primordial_items:diced_mushroom",
+--			target = 1
+--		},
+--	})
+end

mods/dfcaverns/df_achievements/init.lua

@@ -0,0 +1,102 @@
+if not minetest.get_modpath("awards") then
+	minetest.log("warning", "[df_achievements] the df_achievements mod was installed but the [awards] mod was not."
+		.. " df_achievements depends on awards, but it is listed as an optional dependency so that installing the"
+		.. " dfcaverns modpack won't automatically enable it. If you want df_achievements to function please"
+		.. " install awards as well, otherwise you should disable df_achievements.")
+	return
+end
+
+df_achievements = {}
+
+local old_awards_version = false
+if awards.run_trigger_callbacks then
+	-- older versions of awards crash when attempting to use newer versions of triggers
+	-- this "run_trigger_callbacks" API call is present in those older versions, so using that
+	-- as a fingerprint to discover them
+	old_awards_version = true
+	
+	minetest.register_on_dignode(function(pos, oldnode, digger)
+		-- the old version of awards doesn't handle groups when triggering dug nodes, use this to hack around that
+		local node_name = oldnode.name
+		if minetest.get_item_group(node_name, "dfcaverns_big_crystal") > 0 then
+			awards.unlock(digger:get_player_name(), "dfcaverns_ruby_crystals")
+		elseif minetest.get_item_group(node_name, "dfcaverns_cave_coral") > 0 then
+			awards.unlock(digger:get_player_name(), "dfcaverns_cave_coral")
+		end
+	end)	
+else
+	-- used to track the progress of achievements that are based off of other achievements
+	awards.register_trigger("dfcaverns_achievements", {
+		type="counted_key",
+		progress = "@1/@2", -- awards seems to use a conflicting syntax with internationalization, ick. Avoid words here.
+		get_key = function(self, def)
+			return def.trigger.achievement_name
+		end,
+	})
+end
+
+
+local achievement_parents = {}
+df_achievements.get_child_achievement_count = function(parent_achievement)
+	return #achievement_parents[parent_achievement]
+end
+
+local register_achievement_old = awards.register_achievement
+awards.register_achievement = function(achievement_name, achievement_def, ...)
+	if old_awards_version and achievement_def.trigger and achievement_def.trigger.type=="dfcaverns_achievements" then
+		-- there's a significant difference between how triggers work
+		-- in older versions of the awards mod. The new version of the trigger doesn't
+		-- work with the old. Rather than do a bunch of work to support old versions, strip them out.
+		achievement_def.trigger = nil
+	end
+
+	-- The achievement being registered has "parent" achievements that progress when it is unlocked,
+	-- track that here
+	if achievement_def._dfcaverns_achievements then
+		for _, parent_achievement in pairs(achievement_def._dfcaverns_achievements) do
+			local parent_source_list = achievement_parents[parent_achievement] or {}
+			achievement_parents[parent_achievement] = parent_source_list
+			table.insert(parent_source_list, achievement_name)
+		end
+	end
+
+	register_achievement_old(achievement_name, achievement_def, ...)
+end
+
+local modpath = minetest.get_modpath(minetest.get_current_modname())
+
+awards.register_on_unlock(function(player_name, def)
+	local def_dfcaverns_achievements = def._dfcaverns_achievements
+	if not def_dfcaverns_achievements then return end
+	local player_awards = awards.player(player_name)
+	if not player_awards then return end	
+	local unlocked = player_awards.unlocked
+	if not unlocked then return end
+	
+	-- the achievement that just got unlocked had one or more "parent" achievements associated with it.
+	for _, achievement_parent in pairs(def_dfcaverns_achievements) do
+		player_awards.dfcaverns_achievements = player_awards.dfcaverns_achievements or {}
+		local source_list = achievement_parents[achievement_parent]
+		local total = #source_list
+		local count = 0
+		for _, source_achievement in pairs(source_list) do
+			if unlocked[source_achievement] == source_achievement then count = count + 1 end
+		end
+		player_awards.dfcaverns_achievements[achievement_parent] = count
+		awards.save()
+		if count >= total then
+			minetest.after(4, awards.unlock, player_name, achievement_parent)
+		end			
+	end
+end)
+
+
+
+dofile(modpath.."/travel.lua")
+dofile(modpath.."/farming.lua")
+dofile(modpath.."/dig.lua")
+dofile(modpath.."/food.lua")
+dofile(modpath.."/misc.lua")
+
+-- not used outside this mod
+df_achievements.test_list = nil

mods/dfcaverns/df_achievements/locale/template.txt

@@ -0,0 +1,180 @@
+# textdomain: df_achievements
+
+
+### dig.lua ###
+
+"Collect" Lightseam Stone=
+
+Attempt to collect a piece of Lightseam, a strange glowing mineral found deep underground.=
+
+Collect Castle Coral=
+Collect Cave Coral=
+Collect Cave Pearls=
+Collect Flawless Mese Crystal Block=
+Collect Giant Red Crystal=
+Collect Giant Webbing=
+Collect Glow Worms=
+Collect Glowing Amethyst=
+Collect Luminous Salt Crystal=
+
+Collect a block of glowing amethyst crystal from the Underworld.=
+
+Collect a flawless Mese crystal block from the Magma Sea.=
+
+Collect a luminous salt crystal from the dry caverns where Bloodthorns live.=
+
+Collect a piece of Castle Coral from the Sunless Sea.=
+Collect a piece of Cave Coral from the Sunless Sea.=
+Collect a piece of giant webbing found in a cave.=
+
+Collect one of the giant red crystals found in large barren caverns.=
+
+Collect some cave pearls from the wall of a cave.=
+Collect various different exotic items from various caverns.=
+Deep Prospector=
+Destroy a Gas Seep=
+
+Plug a crack that mine gas is seeping out of to make the caves just a little bit safer.=
+
+
+### dig.lua ###
+### food.lua ###
+### misc.lua ###
+
+=
+
+### farming.lua ###
+
+Fungal Arborist=
+Plant @1=
+Plant Black Cap=
+Plant Bloodthorn=
+Plant Cave Wheat=
+Plant Dimple Cup=
+Plant Fungiwood=
+Plant Goblin Cap=
+Plant Pig Tail=
+Plant Plump Helmet=
+Plant Primordial Fern=
+Plant Primordial Jungle Mushroom=
+Plant Primordial Jungle Tree=
+Plant Primordial Mushroom=
+Plant Primordial Mycelium=
+Plant Quarry Bush=
+Plant Spindlestem=
+Plant Spore Tree=
+Plant Sweet Pod=
+Plant Torchspine=
+Plant Tower Cap=
+Plant Tunnel Tube=
+Plant a @1 in a place where it can grow.=
+
+Plant one of every kind of 'tree' found in the caverns above the Sunless Sea.=
+
+Plant one of every kind of 'tree' found in the caverns beneath the surface.=
+
+Plant one of every kind of 'tree' from the Primordial caverns.=
+
+Plant one of every kind of small farmable plant found in the caverns beneath the surface.=
+
+Primordial Arborist=
+Underground Arborist=
+Underground Farmer=
+
+### food.lua ###
+
+Dwarven Gourmand=
+Eat @1=
+Eat Diced Mushroom=
+Eat a Glowtato=
+Eat a Primordial Fruit=
+
+Eat one of each of the various meals that can be cooked or crafted from underground ingredients.=
+
+Eat one of the strange fruits found only deep underground in the Primordial caverns.=
+
+It's a basic staple of the underground, but at least it's not Plump Helmet.=
+
+One of the many delights that can be crafted only from fungal growths found deep underground.=
+
+Slightly less prestigious than the Primordial Fruit, but still rare and exotic compared to surface world fare.=
+
+
+### misc.lua ###
+
+Activating a puzzle seal has produced a breach in the slade foundations of the world.=
+
+Capture an Ice Sprite=
+Decipher the code of the ancients. Do you dare turn the key?=
+Detonate Mine Gas=
+Get Attacked by an Underworld Guardian=
+Loot 100 Ancient Warrior Bones=
+Loot Ancient Warrior Bones=
+Punch Veinstone=
+Punch a vein to hear the heartbeat of the stone.=
+Repair 100 Ancient Lanterns=
+Repair an Ancient Lantern=
+Solve a Puzzle Seal=
+Trigger a Slade Breacher=
+
+You may not be able to build new ones, but at least you can get the old ones shining brightly again.=
+
+You've captured an ice sprite and placed it in a bottle. It dances and sparkles and sheds light through the frosted glass while making a faint tinkling sound. Pretty.=
+
+You've discovered something important about those mysterious slade statues in the Underworld.=
+
+
+### travel.lua ###
+
+Discover @1s=
+Discover All Fungal Cavern Types=
+Discover All Overworld Cavern Types=
+Discover All Underground Cavern Types=
+Discover Black Caps=
+Discover Bloodthorns=
+Discover Fungiwood=
+Discover Goblin Caps=
+Discover Spore Trees=
+Discover Tower Caps=
+Discover Tunnel Tubes=
+Discover a Deep Chasm=
+Discover a Deep Sinkhole=
+Discover a Glowing Pit=
+Discover a cavern containing oil deep underground.=
+Discover a cavern where @1s grow in the wild.=
+Discover a cavern where Black Caps grow in the wild.=
+Discover a cavern where Bloodthorns grow in the wild.=
+Discover a cavern where Fungiwoods grow in the wild.=
+Discover a cavern where Goblin Caps grow in the wild.=
+Discover a cavern where Spore Trees grow in the wild.=
+Discover a cavern where Tower Caps grow in the wild.=
+Discover a cavern where Tunnel Tubes grow in the wild.=
+Discover a deep natural sinkhole.=
+Discover a gigantic underground natural chasm.=
+
+Discover a glowing pit in the slade foundations of the world.=
+
+Discover all Primordial Cavern Types=
+Discover all major kinds of giant cavern environment.=
+
+Discover all of the major types of cavern below the foundations of the world.=
+
+Discover all of the major types of cavern environments between the Sunless Sea and the foundations of the world.=
+
+Discover examples of all of the fungal cavern biomes.=
+Discover the Magma Sea=
+Discover the Oil Sea=
+Discover the Primordial Fungus=
+Discover the Primordial Jungle=
+Discover the Sunless Sea=
+Discover the Underworld=
+
+Discover the ancient caverns at the foundations of the world.=
+
+Discover the fungus-ridden caverns below the foundations of the world.=
+
+Discover the giant caverns to which all water from the surface ultimately drain.=
+
+Discover the lost jungles below the foundations of the world.=
+
+Discover the sea of magma that volcanoes draw from.=

mods/dfcaverns/df_achievements/misc.lua

@@ -0,0 +1,103 @@
+local S = minetest.get_translator(minetest.get_current_modname())
+
+-- misc
+if df_dependencies.node_name_glass_bottle then
+	awards.register_achievement("dfcaverns_captured_ice_sprite", {
+		title = S("Capture an Ice Sprite"),
+		description = S("You've captured an ice sprite and placed it in a bottle. It dances and sparkles and sheds light through the frosted glass while making a faint tinkling sound. Pretty."),
+		icon = "dfcaverns_awards_backgroundx32.png^ice_sprites_bottle.png^dfcaverns_awards_foregroundx32.png",
+		difficulty = 2,
+		trigger = {
+			type = "craft",
+			item = "ice_sprites:ice_sprite_bottle",
+			target = 1,
+		},
+	})
+end
+
+df_mapitems.on_veinstone_punched = function(pos, node, puncher, pointed_thing)
+	awards.unlock(puncher:get_player_name(), "dfcaverns_punched_veinstone")
+end
+awards.register_achievement("dfcaverns_punched_veinstone", {
+	title = S("Punch Veinstone"),
+	description = S("Punch a vein to hear the heartbeat of the stone."),
+	difficulty = 2,
+	icon = "dfcaverns_awards_backgroundx32.png^((".. df_dependencies.texture_stone .. "^dfcaverns_veins.png)^[resize:32x32)^dfcaverns_awards_foregroundx32.png",
+})
+
+if minetest.get_modpath("df_underworld_items") then
+
+	if minetest.get_modpath("hunter_statue") then
+		hunter_statue.player_punched = function(node_name, pos, player)
+			if node_name ~= "df_underworld_items:hunter_statue" then return end
+			awards.unlock(player:get_player_name(), "dfcaverns_attacked_by_guardian_statue")
+		end
+		awards.register_achievement("dfcaverns_attacked_by_guardian_statue", {
+			title = S("Get Attacked by an Underworld Guardian"),
+			difficulty = 2,
+			description = S("You've discovered something important about those mysterious slade statues in the Underworld."),
+			icon = "dfcaverns_awards_backgroundx32.png^dfcaverns_guardian_achievement.png^dfcaverns_awards_foregroundx32.png",
+			secret=true,
+		})
+	end
+
+	df_underworld_items.puzzle_seal_solved = function(pos, player)
+		if player == nil then return end
+		awards.unlock(player:get_player_name(), "dfcaverns_solved_puzzle_seal")
+	end 
+	awards.register_achievement("dfcaverns_solved_puzzle_seal", {
+		title = S("Solve a Puzzle Seal"),
+		difficulty = 4,
+		description = S("Decipher the code of the ancients. Do you dare turn the key?"),
+		icon = "dfcaverns_puzzle_seal_solvedx32.png^dfcaverns_awards_foregroundx32.png",
+	})
+	
+	df_underworld_items.slade_breacher_triggered = function(pos, player)
+		awards.unlock(player:get_player_name(), "dfcaverns_triggered_slade_breacher")
+	end
+	awards.register_achievement("dfcaverns_triggered_slade_breacher", {
+		title = S("Trigger a Slade Breacher"),
+		difficulty = 1,
+		description = S("Activating a puzzle seal has produced a breach in the slade foundations of the world."),
+		icon = "dfcaverns_puzzle_seal_activex32.png^dfcaverns_awards_foregroundx32.png",
+		secret=true,
+	})
+	
+	df_underworld_items.ancient_lantern_fixed = function(pos, player)
+		awards.unlock(player:get_player_name(), "dfcaverns_repaired_lantern")
+	end
+	awards.register_achievement("dfcaverns_repaired_lantern", {
+		title = S("Repair an Ancient Lantern"),
+		difficulty = 2,
+		description = S("You may not be able to build new ones, but at least you can get the old ones shining brightly again."),
+		icon = "dfcaverns_awards_backgroundx32.png^((dfcaverns_slade_brick.png^(" .. df_dependencies.texture_meselamp .. "^[mask:dfcaverns_lantern_mask.png))^[resize:32x32)^dfcaverns_awards_foregroundx32.png",
+		secret=true,
+	})
+
+--	awards.register_achievement("dfcaverns_repaired_100_lanterns", {
+--		title = S("Repair 100 Ancient Lanterns"),
+--		description = S(""),
+--		icon =,
+--	})
+
+end
+
+
+-- can't think of an easy way to detect these
+--awards.register_achievement("dfcaverns_torch_detonated_mine_gas", {
+--	title = S("Detonate Mine Gas"),
+--	description = S(""),
+--	icon =,
+--})
+
+--awards.register_achievement("dfcaverns_looted_underworld_bones", {
+--	title = S("Loot Ancient Warrior Bones"),
+--	description = S(""),
+--	icon =,
+--})
+--
+--awards.register_achievement("dfcaverns_looted_100_underworld_bones", {
+--	title = S("Loot 100 Ancient Warrior Bones"),
+--	description = S(""),
+--	icon =,
+--})

mods/dfcaverns/df_achievements/mod.conf

@@ -0,0 +1,4 @@
+name=df_achievements
+description=Achievements for DFCaverns
+depends=df_caverns, df_trees, df_farming, df_mapitems, df_dependencies, pit_caves
+optional_depends=df_underworld_items, hunter_statue, awards