Update API.md

API.md

@@ -54,7 +54,7 @@ under can do this.
 Liquids can never be passed down to hardened dripstones.
 3. If the dripstone is a spike size, it can release the droplet downwards to the
 ground or to an object (such as a dripstone spike or a cauldron) that can catch
-the droplet. If there's no surface within 25 blocks, the droplet evaporates. If
+the droplet. If there's no surface within 50 blocks, the droplet evaporates. If
 there's a surface that is unable to catch the droplet, a new spike will grow on
 top, effectively forming a new stalagmite.
 
@@ -85,17 +85,115 @@ Huge dripstone cannot be upgraded to a dripstone block, however.
 
 ## Lua modders
 
-The following API functions are exposed for you to manipulate this mod with.
+Everything until this section has been an introduction to how the mod has
+implemented dripstone. However, you are welcome to make changes and add your
+own types!
 
-- `noordstar_dripstone.add_lava_source(nodename)` Add a node name that the mod
-should consider a source of lava droplets above dripstone blocks.
-- `noordstar_dripstone.add_water_source(nodename)` Add a node name that the mod
-should consider a source of water droplets above dripstone blocks.
-- `noordstar_dripstone.add_lava_catcher(oldnodename, newnodename)` Register a
-node that can catch lava droplets to transform into a new node, such as a
-cauldron.
-- `noordstar_dripstone.add_water_catcher(oldnodename, newnodename)` Register a
-node that can catch water droplets to transform into a new node, such as a
-cauldron.
+Matter of fact, everything until this section has been written using this
+publicly available mod. So take a look at [the init.lua file](init.lua) if
+you'd prefer to look at a real example.
 
-All input values are strings in this API.
+This mod uses **droplets** to build the dripstone. These are incredibly tiny
+drops of liquid that flow down a dripstone. Currently, there are two
+types in use: `water` and `lava`.
+
+### noordstar_dripstone.register_droplet(droplet)
+
+Every droplet type is a unique string. Different droplets interact uniquely
+with different dripstones.
+
+```lua
+noordstar_dripstone.register_droplet("magma")
+noordstar_dripstone.register_droplet("mercury")
+noordstar_dripstone.register_droplet("mineral_water")
+```
+
+### noordstar_dripstone.add_droplet_source(droplet, nodename)
+
+In order to let droplets stream down dripstone nodes, you need to define which
+nodes a full dripstone block can absorb liquid from. Absorbing liquid does not
+affect the liquid node: this mod creates a way for players to duplicate liquid
+nodes.
+
+Generally, you are recommended to use liquid source blocks to create droplets.
+However, you don't need to do this! You could use any node, as long as it has a
+name.
+
+```lua
+noordstar_dripstone.add_droplet_source("water", "mymod:swamp_water_source")
+```
+
+### noordstar_dripstone.add_droplet_catcher(droplet, oldnodename, newnodename)
+
+Similarly, on the other side of the dripstone, you can create a catcher that
+can catch any of the liquid drops dripping down. You can use this to create
+orchids, or to create other interactions with nodes that might change from a
+tiny bit of liquid.
+
+```lua
+noordstar_dripstone.add_droplet_catcher("water", "mymod:cauldron_empty", "mymod:water_cauldron")
+noordstar_dripstone.add_droplet_catcher("water", "mymod:dirt", "mymod:farmland")
+noordstar_dripstone.add_droplet_catcher("lava", "mymod:precious_orchid", "mymod:dead_bush")
+```
+
+### noordstar_dripstone.register_dripstone(flavor, def)
+
+You can define your own dripstone type. You need to pick a flavor (which you
+shouldn't namespace) and you need to offer a dripstone definition, which is
+defined as follows:
+
+```
+{
+    -- What item is dropped when the dripstone is broken.
+    -- When left nil, the spike of the dripstone type is dropped.
+    drop = "dry"
+
+    -- What flavor to become when using liquid to grow.
+    -- Leave to nil when unable to grow.
+    grow_to = "dry"
+
+    -- When receiving a droplet of a given type, transform into a different
+    -- dripstone type. When a droplet is unspecified, the block cannot
+    -- receive the droplet.
+    on_droplet_receive = {
+        water = "watered",
+        lava = "molten",
+    }
+
+    -- Sounds that the dripstone makes
+    sounds = <standard sound definition for a node>
+
+    -- Node tiles for layout
+    tiles = <node tile layout>
+
+    -- Droplet type that the dripstone flavor can pass down.
+    -- When the droplet is passed down, the dripstone converts to the
+    -- "grow_to" type
+    trickle_down = "water"
+
+    -- Speed of how often a droplet trickles down.
+    trickle_speed = 5
+}
+```
+
+For examples, refer to [this mod's init.lua file](init.lua).
+
+### noordstar_dripstone.size_to_name(flavor, size)
+
+Lastly, this function serves as a tool to help you find the node name of a
+dripstone of a given flavor and size. Remember that dripstone size range from 1
+to 8.
+
+```lua
+noordstar_dripstone.size_to_name("dry", 1)
+-- Returns "noordstar_dripstone:dry_dripstone_spike"
+
+noordstar_dripstone.size_to_name("lol", 3)
+-- Returns "noordstar_dripstone:small_lol_dripstone"
+
+noordstar_dripstone.size_to_name("cool", 8)
+-- Returns "noordstar_dripstone:cool_dripstone_block"
+```
+
+Note how the function even returns a string if the dripstone type hasn't been
+registered.

api.lua

@@ -0,0 +1,492 @@
+noordstar_dripstone = {}
+
+-- Internal values that cannot be changed by other mods (directly).
+local internal = {
+	-- These values are not meant to be changed during runtime.
+	constant = {
+		-- How many nodes downwards a droplet is able to drop from a stalactite
+		-- before the droplet evaporates.
+		drop_down_reach = 50,
+
+		-- The number of seconds it takes for a dripstone node to grow 1 unit
+		-- (NOTE: Not one node size! One unit, which quadratically increases
+		-- per node size.)
+		growth_factor = 3,
+
+		-- This mod's name.
+		modname = minetest.get_current_modname(),
+
+		-- The number of samples that each ABM should execute.
+		-- Make sure this is a whole number and less than speed_factor.
+		samples_per_interval = 30,
+
+		-- Factor deciding this mod's relative speed.
+		-- Set this value to 1 if you wish to debug and let the dripstone
+		-- change rapidly.
+		-- Rule of thumb: with a setting of 60, it takes a lava farm about 30
+		-- minutes to fill a cauldron with lava.
+		speed_factor = 60,
+
+		-- Names of the various dripstone widths
+		width_names = {
+			"spike", "tiny", "small", "medium",
+			"great", "large", "huge", "block",
+		},
+	},
+
+	-- Nodes that function as cauldrons
+	cauldrons = {},
+
+	-- Nodes that provide droplets
+	sources = {},
+
+	-- Nodes that allow a droplet to trickle down if it is directly below a
+	-- node that passes down that droplet.
+	tricklers = {},
+}
+
+
+-------------------------------------------------------------------------------
+-------------------------------------------------------------------------------
+---------------------------     PUBLIC API     --------------------------------
+-------------------------------------------------------------------------------
+-------------------------------------------------------------------------------
+
+-- Register a node that can catch a droplet from a dripstone stalactite.
+function noordstar_dripstone.add_droplet_catcher(droplet, oldnodename, newnodename)
+	return internal.add_droplet_catcher(droplet, oldnodename, newnodename)
+end
+
+-- Register a new source node that can provide droplets to dripstone blocks.
+function noordstar_dripstone.add_droplet_source(droplet, nodename)
+	return internal.add_droplet_source(droplet, nodename)
+end
+
+-- Register a new dripstone type.
+--
+-- {
+-- 		-- What item is dropped when the dripstone is broken.
+--		-- When left nil, the spike of the dripstone type is dropped.
+--		drop = "dry"
+--
+-- 		-- What flavor to become when using liquid to grow.
+-- 		-- Leave to nil when unable to grow.
+-- 		grow_to = "dry"
+--
+-- 		-- When receiving a droplet of a given type, transform into a different
+-- 		-- dripstone type. When a droplet is unspecified, the block cannot
+-- 		-- receive the droplet.
+-- 		on_droplet_receive = {
+-- 			water = "watered",
+-- 			lava = "molten",
+-- 		}
+--
+--		-- Sounds that the dripstone makes
+--      sounds = <standard sound definition for a node>
+--
+-- 		-- Node tiles for layout
+-- 		tiles = <node tile layout>
+--
+-- 		-- Droplet type that the dripstone flavor can pass down.
+-- 		-- When the droplet is passed down, the dripstone converts to the
+--		-- "grow_to" type
+-- 		trickle_down = "water"
+-- 
+--  	-- Speed of how often a droplet trickles down.
+-- 		trickle_speed = 5
+-- }
+function noordstar_dripstone.register_dripstone(flavor, def)
+	return internal.register_dripstone_flavor(flavor, def)
+end
+
+-- Register a new droplet type that can be absorbed and passed on by dripstone.
+function noordstar_dripstone.register_droplet(droplet)
+	if internal.cauldrons[droplet] == nil then
+		internal.cauldrons[droplet] = {}
+	end
+	if internal.sources[droplet] == nil then
+		internal.sources[droplet] = {}
+	end
+	if internal.tricklers[droplet] == nil then
+		internal.tricklers[droplet] = {}
+	end
+end
+
+-- Get a dripstone's node name based on its flavor and size.
+function noordstar_dripstone.size_to_name(flavor, size)
+	return internal.size_to_name(flavor, size)
+end
+
+-------------------------------------------------------------------------------
+-------------------------------------------------------------------------------
+-------------------------------------------------------------------------------
+-------------------------------------------------------------------------------
+-------------------------------------------------------------------------------
+
+-- Add a droplet catcher, which is a node that allows a stalactite spike to
+-- change the name using a droplet.
+function internal.add_droplet_catcher(droplet, oldnodename, newnodename)
+	return internal.register_cauldron(droplet, oldnodename, newnodename)
+end
+
+function internal.add_droplet_source(droplet, nodename)
+	if internal.sources[droplet] == nil then
+		internal.uninitialized_droplet_error(droplet)
+	end
+	table.insert(internal.sources[droplet], nodename)
+end
+
+-- Add a droplet trickler, which is a dripstone node that allows a droplet to
+-- be trickled down from the node directly above it.
+-- Running this function overrides previous values.
+function internal.add_droplet_trickler(droplet, oldnodename, newnodename)
+	if internal.tricklers[droplet] == nil then
+		internal.uninitialized_droplet_error(droplet)
+	end
+
+	internal.tricklers[droplet][oldnodename] = newnodename
+end
+
+-- Capitalize a string
+function internal.capitalize(str)
+	return (str:gsub("^%l", string.upper))
+end
+
+function internal.drawtype_of_size(size)
+	if size >= 8 then
+		return "normal"
+	else
+		return "nodebox"
+	end
+end
+
+function internal.hit_with_droplet(pos, node, droplet, spikename)
+	local m = internal.cauldrons[droplet] or {}
+
+	if m[node.name] == nil then
+		-- Not a cauldron! Therefore we place a spike on top.
+		pos = vector.offset(pos, 0, 1, 0)
+		node = minetest.get_node(pos)
+		node.name = spikename
+		minetest.set_node(pos, node)
+	else
+		node.name = m[node.name]
+		minetest.set_node(pos, node)
+	end
+end
+
+-- Determine whether this mod considers a node an air node.
+function internal.is_air(nodename)
+	if nodename == "air" then
+		return true
+	else
+		return minetest.get_item_group(nodename, "air") ~= 0
+	end
+end
+
+-- Create a node box for any given dripstone size.
+-- Size 8 is a normal block size
+function internal.nodebox_of_size(size)
+	if size >= 8 then
+		return nil
+	else
+		return {
+			type = "fixed",
+			fixed = {
+				{ - size / 16, -0.5, - size / 16, size / 16, 0.5, size / 16 },
+			},
+		}
+	end
+end
+
+function internal.register_absorb_abm(droplet, oldnodename, newnodename)
+	minetest.register_abm({
+		nodenames = { oldnodename },
+		interval = internal.constant.speed_factor / internal.constant.samples_per_interval,
+		chance = internal.constant.samples_per_interval,
+		catch_up = true,
+		action = function (pos, node, aoc, aocw)
+			local pos_above = vector.offset(pos, 0, 1, 0)
+			local node_above = minetest.get_node(pos_above)
+
+			for _, source in pairs(internal.sources[droplet] or {}) do
+				if node_above.name == source then
+					node.name = newnodename
+					minetest.set_node(pos, node)
+					return
+				end
+			end
+		end
+	})
+end
+
+function internal.register_cauldron(droplet, oldnodename, newnodename)
+	if internal.cauldrons[droplet] == nil then
+		internal.uninitialized_droplet_error(droplet)
+	end
+
+	internal.cauldrons[droplet][oldnodename] = newnodename
+end
+
+function internal.register_dripstone_craft(newnodename, oldnodename, spikename)
+	minetest.register_craft({
+		output = newnodename,
+		recipe = {
+			{ spikename, spikename  , spikename },
+			{ spikename, oldnodename, spikename },
+			{ spikename, spikename  , spikename },
+		}
+	})
+end
+
+function internal.register_dripstone_flavor(flavor, def)
+	-- Guaranteed values
+	local drop = def.drop or internal.size_to_name(flavor, 1)
+	local on_droplet_receive = def.on_droplet_receive or {}
+	local trickle_speed = def.trickle_speed or 1
+
+	-- Potentially nil, might need to be checked before assumed safe
+	local dry_up = def.grow_to
+	local sounds = def.sounds
+	local tiles = def.tiles
+	local trickl = def.trickle_down
+
+	-- Register nodes
+	for width = 1, 8, 1 do
+		internal.register_dripstone_node(flavor, width, tiles, sounds, drop)
+	end
+
+	-- Register upgrade crafting recipes
+	for width = 1, 6, 1 do
+		internal.register_dripstone_craft(
+			internal.size_to_name(flavor, width + 1),
+			internal.size_to_name(flavor, width),
+			internal.size_to_description(flavor, 1)
+		)
+	end
+
+	-- Allow dripstone nodes to trickle down droplets
+	for droplet, new_flavor in pairs(on_droplet_receive) do
+		for width = 1, 8, 1 do
+			internal.add_droplet_trickler(
+				droplet,
+				internal.size_to_name(flavor, width),
+				internal.size_to_name(new_flavor, width)
+			)
+		end
+	end
+
+	-- Allow spike stalagmites to catch droplets
+	for droplet, new_flavor in pairs(on_droplet_receive) do
+		internal.register_cauldron(
+			droplet,
+			internal.size_to_name(flavor, 1),
+			internal.size_to_name(new_flavor, 1)
+		)
+	end
+
+	-- Register ABM to grow when possible.
+	if dry_up then
+		for width = 1, 6, 1 do
+			internal.register_grow_abm(
+				internal.size_to_name(flavor, width),
+				internal.size_to_name(dry_up, width + 1),
+				width
+			)
+		end
+	end
+
+	-- Register ABM to grow when possible
+	if trickl and dry_up then
+		for width = 1, 8, 1 do
+			internal.register_trickle_down_abm(
+				trickl,
+				width,
+				internal.size_to_name(flavor, width),
+				internal.size_to_name(dry_up, width),
+				dry_up,
+				trickle_speed
+			)
+		end
+	end
+
+	-- Register ABM to absorb liquids from above
+	for droplet, new_flavor in pairs(on_droplet_receive) do
+		internal.register_absorb_abm(
+			droplet,
+			internal.size_to_name(flavor, 8),
+			internal.size_to_name(new_flavor, 8)
+		)
+	end
+
+	-- Register ABM to drop down droplets from a stalactite spike
+	if dry_up and trickl then
+		internal.register_drop_down_abm(
+			trickl,
+			internal.size_to_name(flavor, 1),
+			internal.size_to_name(dry_up, 1),
+			trickle_speed
+		)
+
+		-- Makes dripstone stalagmite spikes delete droplets.
+		-- Without this, stalactites remain very thick and short while
+		-- stalagmites become absurdly long and thin.
+		-- A watered stalagmite can't accept a water droplet and the stalagmite
+		-- therefore grows one per droplet. To mitigate this, a watered spike
+		-- can still act as a water droplet cauldron without changing.
+		-- This way, no new droplets are passed on if the stalagmite is already
+		-- full, and the structure simply waits for a dripstone node to grow.
+		-- This behaviour is designed to be easy to override. (For example: if
+		-- you want a HEAVY watered dripstone type that holds 2 droplets.)
+		internal.add_droplet_catcher(
+			trickl,
+			internal.size_to_name(flavor, 1),
+			internal.size_to_name(flavor, 1)
+		)
+	end
+end
+
+function internal.register_dripstone_node(flavor, size, tiles, sounds, drop)
+	minetest.register_node(internal.size_to_name(flavor, size), {
+		description = internal.size_to_description(flavor, size),
+		tiles = tiles,
+		groups = {
+			pickaxey=2,
+			material_stone=1,
+			fall_damage_add_percent = math.max(4 - size, 0) / 4 * 100
+		},
+		is_ground_content = true,
+		drop = {
+			max_items = math.floor((size + 1) / 2),
+			items = {
+				{ rarity = 1
+				, items = { drop }
+				},
+				{ rarity = 2
+				, items = { drop }
+				},
+				{ rarity = 4
+				, items = { drop }
+				},
+				{ rarity = 4
+				, items = { drop }
+				},
+			}
+		},
+		sounds = sounds,
+		drawtype = internal.drawtype_of_size(size),
+		paramtype = "light",
+		sunlight_propagates = size < 8,
+		node_box = internal.nodebox_of_size(size),
+		_mcl_hardness = 1.0 + size / 8,
+		_mcl_blast_resistance = 1 + size / 2,
+		_mcl_silk_touch_drop = true,
+	})
+end
+
+function internal.register_drop_down_abm(droplet, spikename, dryspikename, trickle_speed)
+	minetest.register_abm({
+		nodenames = { spikename },
+		interval = trickle_speed * internal.constant.speed_factor / internal.constant.samples_per_interval,
+		chance = internal.constant.samples_per_interval,
+		catch_up = true,
+		action = function (pos, node, aoc, aocw)
+			local pos_below = vector.offset(pos, 0, -1, 0)
+			local node_below = minetest.get_node(pos_below)
+
+			if not internal.is_air(node_below.name) then
+				-- Node below is not air! Unable to drop a droplet down.
+				return
+			end
+
+			for dy = 2, internal.constant.drop_down_reach, 1 do
+				pos_below = vector.offset(pos, 0, -dy, 0)
+				node_below = minetest.get_node(pos_below)
+
+				if not internal.is_air(node_below.name) then
+					-- Node is not air! If it is a cauldron, update the node.
+					internal.hit_with_droplet(
+						pos_below,
+						node_below,
+						droplet,
+						dryspikename
+					)
+					break
+				end
+			end
+
+			node.name = dryspikename
+			minetest.set_node(pos, node)
+		end
+	})
+end
+
+function internal.register_grow_abm(oldnodename, newnodename, width)
+	minetest.register_abm({
+		nodenames = { oldnodename },
+		-- 2(w + 1) * 2(w + 1) - 2w * 2w = 8w + 4
+		interval = (8 * width + 4) * internal.constant.speed_factor * internal.constant.growth_factor / internal.constant.samples_per_interval,
+		chance = internal.constant.samples_per_interval,
+		catch_up = true,
+		action = function (pos, node, aoc, aocw)
+			node.name = newnodename
+			minetest.set_node(pos, node)
+		end
+	})
+end
+
+function internal.register_trickle_down_abm(droplet, width, old_source, new_source, dry_up, trickle_speed)
+	minetest.register_abm({
+		nodenames = { old_source },
+		interval = trickle_speed * internal.constant.speed_factor / internal.constant.samples_per_interval,
+		chance = internal.constant.samples_per_interval,
+		catch_up = true,
+		action = function (pos, node, aoc, aocw)
+			local pos_below = vector.offset(pos, 0, -1, 0)
+			local node_below = minetest.get_node(pos_below)
+
+			local m = internal.tricklers[droplet] or {}
+
+			if m[node_below.name] ~= nil then
+				-- Trickler found below!
+				node_below.name = m[node_below.name]
+			elseif width > 1 and internal.is_air(node_below.name) then
+				-- Air node found below a non-spike, turn it into a spike.
+				node_below.name = internal.size_to_name(dry_up, 1)
+			else
+				return -- Prevent droplet from leaking away
+			end
+			
+			node.name = new_source
+			minetest.set_node(pos_below, node_below)
+			minetest.set_node(pos, node)
+		end
+	})
+end
+
+function internal.size_to_description(flavor, size)
+	local width_name = internal.constant.width_names[size]
+
+	if size == 1 or size == 8 then
+		return internal.capitalize(flavor) .. " dripstone " .. width_name
+	else
+		return internal.capitalize(width_name) .. " " .. flavor .. " dripstone"
+	end
+end
+
+function internal.size_to_name(flavor, size)
+	local namespace = internal.constant.modname .. ":"
+	local width_name = internal.constant.width_names[size]
+
+	if size == 1 or size == 8 then
+		return namespace .. flavor .. "_dripstone_" .. width_name
+	else
+		return namespace .. width_name .. "_" .. flavor .. "_dripstone"
+	end
+end
+
+function internal.uninitialized_droplet_error(droplet)
+	error(
+		"Droplet " .. droplet .. " has not been initialized yet!"
+	)
+end

init.lua

@@ -1,750 +1,87 @@
-noordstar_dripstone = {}
+-- Load dripstone API
 
--- Constants
-local speed_factor = 30
-local seconds_per_growth = 10 * speed_factor
-local seconds_per_water_trickle = 1 * speed_factor
-local seconds_per_lava_trickle = 6 * speed_factor
-local samples_per_interval = 30
+local modpath = minetest.get_modpath(minetest.get_current_modname())
 
--- Namespaced node names
-local dry_dripstone_block = "noordstar_dripstone:dripstone_block"
-local dry_dripstone_huge = "noordstar_dripstone:huge_dripstone"
-local dry_dripstone_large = "noordstar_dripstone:large_dripstone"
-local dry_dripstone_great = "noordstar_dripstone:great_dripstone"
-local dry_dripstone_medium = "noordstar_dripstone:medium_dripstone"
-local dry_dripstone_small = "noordstar_dripstone:small_dripstone"
-local dry_dripstone_tiny = "noordstar_dripstone:tiny_dripstone"
-local dry_dripstone_spike = "noordstar_dripstone:dripstone_spike"
-local hardened_dripstone_block = "noordstar_dripstone:hardened_dripstone_block"
-local hardened_dripstone_huge = "noordstar_dripstone:huge_hardened_dripstone"
-local hardened_dripstone_large = "noordstar_dripstone:large_hardened_dripstone"
-local hardened_dripstone_great = "noordstar_dripstone:great_hardened_dripstone"
-local hardened_dripstone_medium = "noordstar_dripstone:medium_hardened_dripstone"
-local hardened_dripstone_small = "noordstar_dripstone:small_hardened_dripstone"
-local hardened_dripstone_tiny = "noordstar_dripstone:tiny_hardened_dripstone"
-local hardened_dripstone_spike = "noordstar_dripstone:hardened_dripstone_spike"
-local molten_dripstone_block = "noordstar_dripstone:molten_dripstone_block"
-local molten_dripstone_huge = "noordstar_dripstone:huge_molten_dripstone"
-local molten_dripstone_large = "noordstar_dripstone:large_molten_dripstone"
-local molten_dripstone_great = "noordstar_dripstone:great_molten_dripstone"
-local molten_dripstone_medium = "noordstar_dripstone:medium_molten_dripstone"
-local molten_dripstone_small = "noordstar_dripstone:small_molten_dripstone"
-local molten_dripstone_tiny = "noordstar_dripstone:tiny_molten_dripstone"
-local molten_dripstone_spike = "noordstar_dripstone:molten_dripstone_spike"
-local watered_dripstone_block = "noordstar_dripstone:watered_dripstone_block"
-local watered_dripstone_huge = "noordstar_dripstone:huge_watered_dripstone"
-local watered_dripstone_large = "noordstar_dripstone:large_watered_dripstone"
-local watered_dripstone_great = "noordstar_dripstone:great_watered_dripstone"
-local watered_dripstone_medium = "noordstar_dripstone:medium_watered_dripstone"
-local watered_dripstone_small = "noordstar_dripstone:small_watered_dripstone"
-local watered_dripstone_tiny = "noordstar_dripstone:tiny_watered_dripstone"
-local watered_dripstone_spike = "noordstar_dripstone:watered_dripstone_spike"
-
-local internal = {
-    -- Nodes that the mod should consider as sources to extract water from
-    water_nodes =
-        { "default:river_water_source"
-        , "default:water_source"
-        , "mcl_core:water_source"
-        , "mclx_core:river_water_source"
-        },
-    
-    -- Nodes that the mod should consider as sources to extract lava from
-    lava_nodes =
-        { "default:lava_source"
-        , "mcl_core:lava_source"
-        },
-
-    -- Nodes that can catch a lava droplet instead of letting a spike grow on top
-    lava_cauldrons = {
-        { from = dry_dripstone_spike, to = molten_dripstone_spike },
-        { from = "mcl_cauldrons:cauldron", to = "mcl_cauldrons:cauldron_1_lava" },
-        { from = "mcl_cauldrons:cauldron_1_lava", to = "mcl_cauldrons:cauldron_2_lava" },
-        { from = "mcl_cauldrons:cauldron_2_lava", to = "mcl_cauldrons:cauldron_3_lava" },
-    },
-
-    -- Nodes that can catch a water droplet instead of letting a spike grow on top
-    water_cauldrons = {
-        { from = dry_dripstone_spike, to = watered_dripstone_spike },
-        { from = "mcl_cauldrons:cauldron", to = "mcl_cauldrons:cauldron_1" },
-        { from = "mcl_cauldrons:cauldron_1", to = "mcl_cauldrons:cauldron_2" },
-        { from = "mcl_cauldrons:cauldron_2", to = "mcl_cauldrons:cauldron_3" },
-    }
-}
-
-function noordstar_dripstone.add_lava_source(nodename)
-    table.insert(internal.lava_nodes)
-end
-function noordstar_dripstone.add_water_source(nodename)
-    table.insert(internal.water_nodes, nodename)
+local function load(name)
+    dofile(modpath.."/"..name..".lua")
 end
 
-function noordstar_dripstone.add_lava_catcher(nodename, newnodename)
-    table.insert(internal.lava_cauldrons, { from = nodename, to = newnodename })
-end
-function noordstar_dripstone.add_water_catcher(nodename, newnodename)
-    table.insert(internal.water_cauldrons, { from = nodename, to = newnodename })
+load("api")
+
+-- Choose dripstone sounds
+local dripstone_sounds
+if minetest.get_modpath("mcl_sounds") then
+	dripstone_sounds = mcl_sounds.node_sound_stone_defaults()
 end
 
+-- Register droplet types
+noordstar_dripstone.register_droplet("water")
+noordstar_dripstone.register_droplet("lava")
 
--- Create a node box for any given dripstone size.
--- Size 8 is a normal block size
-local function nodebox_of_size(size)
-    if size >= 8 then
-        return nil
-    else
-        return {
-            type = "fixed",
-            fixed = {
-                { - size / 16, -0.5, - size / 16, size / 16, 0.5, size / 16 },
-            },
-        }
-    end
+-- Register dripstone types
+noordstar_dripstone.register_dripstone("dry", {
+	sounds = dripstone_sounds,
+	tiles = {
+		"noordstar_dripstone_dripstone_top.png",
+		"noordstar_dripstone_dripstone_top.png",
+		"noordstar_dripstone_dripstone_side.png",
+	},
+	on_droplet_receive = {
+		water = "watered",
+		lava = "molten",
+	},
+})
+noordstar_dripstone.register_dripstone("watered", {
+	drop = noordstar_dripstone.size_to_name("dry", 1),
+	grow_to = "dry",
+	on_droplet_receive = {
+		lava = "hardened",
+	},
+	sounds = dripstone_sounds,
+	tiles = {
+		"noordstar_dripstone_watered_dripstone_top.png",
+		"noordstar_dripstone_watered_dripstone_top.png",
+		"noordstar_dripstone_watered_dripstone_side.png",
+	},
+	trickle_down = "water",
+})
+noordstar_dripstone.register_dripstone("molten", {
+	drop = noordstar_dripstone.size_to_name("dry", 1),
+	grow_to = "dry",
+	on_droplet_receive = {
+		water = "hardened",
+	},
+	sounds = dripstone_sounds,
+	tiles = {
+		"noordstar_dripstone_molten_dripstone_top.png",
+		"noordstar_dripstone_molten_dripstone_top.png",
+		"noordstar_dripstone_molten_dripstone_side.png",
+	},
+	trickle_down = "lava",
+	trickle_speed = 6,
+})
+noordstar_dripstone.register_dripstone("hardened", {
+	sounds = dripstone_sounds,
+	tiles = {
+		"noordstar_dripstone_hardened_dripstone_top.png",
+		"noordstar_dripstone_hardened_dripstone_top.png",
+		"noordstar_dripstone_hardened_dripstone_side.png",
+	}
+})
+
+-- Register droplet sources above dripstone blocks
+
+if minetest.get_modpath("default") then
+	noordstar_dripstone.add_droplet_source("water", "default:river_water_source")
+	noordstar_dripstone.add_droplet_source("water", "default:water_source")
+	noordstar_dripstone.add_droplet_source("lava", "default:lava_source")
 end
 
-local function nodebox_type(size)
-    if size >= 8 then
-        return "normal"
-    else
-        return "nodebox"
-    end
+if minetest.get_modpath("mcl_core") then
+	noordstar_dripstone.add_droplet_source("water", "mcl_core:water_source")
+	noordstar_dripstone.add_droplet_source("lava", "mcl_core:lava_source")
 end
 
--- Sounds
-local dripstone_sounds = nil
-if mcl_sounds then
-    dripstone_sounds = mcl_sounds.node_sound_stone_defaults()
+if minetest.get_modpath("mclx_core") then
+	noordstar_dripstone.add_droplet_source("water", "mclx_core:river_water_source")
 end
-
--- Trickle down config
-
-local lava_trickle_down = {
-    { from = dry_dripstone_block, to = molten_dripstone_block },
-    { from = dry_dripstone_huge, to = molten_dripstone_huge },
-    { from = dry_dripstone_large, to = molten_dripstone_large },
-    { from = dry_dripstone_great, to = molten_dripstone_great },
-    { from = dry_dripstone_medium, to = molten_dripstone_medium },
-    { from = dry_dripstone_small, to = molten_dripstone_small },
-    { from = dry_dripstone_tiny, to = molten_dripstone_tiny },
-    { from = dry_dripstone_spike, to = molten_dripstone_spike },
-    { from = watered_dripstone_block, to = hardened_dripstone_block },
-    { from = watered_dripstone_huge, to = hardened_dripstone_huge },
-    { from = watered_dripstone_large, to = hardened_dripstone_large },
-    { from = watered_dripstone_great, to = hardened_dripstone_great },
-    { from = watered_dripstone_medium, to = hardened_dripstone_medium },
-    { from = watered_dripstone_small, to = hardened_dripstone_small },
-    { from = watered_dripstone_tiny, to = hardened_dripstone_tiny },
-    { from = watered_dripstone_spike, to = hardened_dripstone_spike },
-    { from = "air", to = dry_dripstone_spike },
-}
-local water_trickle_down = {
-    { from = dry_dripstone_block, to = watered_dripstone_block },
-    { from = dry_dripstone_huge, to = watered_dripstone_huge },
-    { from = dry_dripstone_large, to = watered_dripstone_large },
-    { from = dry_dripstone_great, to = watered_dripstone_great },
-    { from = dry_dripstone_medium, to = watered_dripstone_medium },
-    { from = dry_dripstone_small, to = watered_dripstone_small },
-    { from = dry_dripstone_tiny, to = watered_dripstone_tiny },
-    { from = dry_dripstone_spike, to = watered_dripstone_spike },
-    { from = molten_dripstone_block, to = hardened_dripstone_block },
-    { from = molten_dripstone_huge, to = hardened_dripstone_huge },
-    { from = molten_dripstone_large, to = hardened_dripstone_large },
-    { from = molten_dripstone_great, to = hardened_dripstone_great },
-    { from = molten_dripstone_medium, to = hardened_dripstone_medium },
-    { from = molten_dripstone_small, to = hardened_dripstone_small },
-    { from = molten_dripstone_tiny, to = hardened_dripstone_tiny },
-    { from = molten_dripstone_spike, to = hardened_dripstone_spike },
-    { from = "air", to = dry_dripstone_spike },
-}
-
-local lava_trickle_down_spike = {
-    { from = dry_dripstone_block, to = molten_dripstone_block },
-    { from = dry_dripstone_huge, to = molten_dripstone_huge },
-    { from = dry_dripstone_large, to = molten_dripstone_large },
-    { from = dry_dripstone_great, to = molten_dripstone_great },
-    { from = dry_dripstone_medium, to = molten_dripstone_medium },
-    { from = dry_dripstone_small, to = molten_dripstone_small },
-    { from = dry_dripstone_tiny, to = molten_dripstone_tiny },
-    { from = dry_dripstone_spike, to = molten_dripstone_spike },
-    { from = watered_dripstone_block, to = hardened_dripstone_block },
-    { from = watered_dripstone_huge, to = hardened_dripstone_huge },
-    { from = watered_dripstone_large, to = hardened_dripstone_large },
-    { from = watered_dripstone_great, to = hardened_dripstone_great },
-    { from = watered_dripstone_medium, to = hardened_dripstone_medium },
-    { from = watered_dripstone_small, to = hardened_dripstone_small },
-    { from = watered_dripstone_tiny, to = hardened_dripstone_tiny },
-    { from = watered_dripstone_spike, to = hardened_dripstone_spike },
-}
-local water_trickle_down_spike = {
-    { from = dry_dripstone_block, to = watered_dripstone_block },
-    { from = dry_dripstone_huge, to = watered_dripstone_huge },
-    { from = dry_dripstone_large, to = watered_dripstone_large },
-    { from = dry_dripstone_great, to = watered_dripstone_great },
-    { from = dry_dripstone_medium, to = watered_dripstone_medium },
-    { from = dry_dripstone_small, to = watered_dripstone_small },
-    { from = dry_dripstone_tiny, to = watered_dripstone_tiny },
-    { from = dry_dripstone_spike, to = watered_dripstone_spike },
-    { from = molten_dripstone_block, to = hardened_dripstone_block },
-    { from = molten_dripstone_huge, to = hardened_dripstone_huge },
-    { from = molten_dripstone_large, to = hardened_dripstone_large },
-    { from = molten_dripstone_great, to = hardened_dripstone_great },
-    { from = molten_dripstone_medium, to = hardened_dripstone_medium },
-    { from = molten_dripstone_small, to = hardened_dripstone_small },
-    { from = molten_dripstone_tiny, to = hardened_dripstone_tiny },
-    { from = molten_dripstone_spike, to = hardened_dripstone_spike },
-}
-
--- Tiles for dripstone
-
-local dry_dripstone_tiles =
-    { "noordstar_dripstone_dripstone_top.png"
-    , "noordstar_dripstone_dripstone_top.png"
-    , "noordstar_dripstone_dripstone_side.png"
-    }
-local hardened_dripstone_tiles =
-    { "noordstar_dripstone_hardened_dripstone_top.png"
-    , "noordstar_dripstone_hardened_dripstone_top.png"
-    , "noordstar_dripstone_hardened_dripstone_side.png"
-    }
-local molten_dripstone_tiles =
-    { "noordstar_dripstone_molten_dripstone_top.png"
-    , "noordstar_dripstone_molten_dripstone_top.png"
-    , "noordstar_dripstone_molten_dripstone_side.png"
-    }
-local watered_dripstone_tiles =
-    { "noordstar_dripstone_watered_dripstone_top.png"
-    , "noordstar_dripstone_watered_dripstone_top.png"
-    , "noordstar_dripstone_watered_dripstone_side.png"
-    }
-
--- Register dripstone nodes
-
-local function make_dripstone(name, desc, longdesc, tiles, drop, size)
-    local sunlight_propagates = nil
-    if size < 8 then
-        sunlight_propagates = true
-    end
-
-    minetest.register_node(name,
-        { description = desc
-        , _doc_items_longdesc = longdesc
-        , tiles = tiles
-        , groups = { pickaxey=2, material_stone=1, fall_damage_add_percent = math.max(4 - size, 0) / 4 * 100 }
-        , is_ground_content = true
-        , drop = {
-            max_items = math.floor((size + 1) / 2),
-            items = {
-                { rarity = 1
-                , items = { drop }
-                },
-                { rarity = 2
-                , items = { drop }
-                },
-                { rarity = 4
-                , items = { drop }
-                },
-                { rarity = 4
-                , items = { drop }
-                },
-            }
-        }
-        , sounds = dripstone_sounds
-        , drawtype = nodebox_type(size)
-        , paramtype = "light"
-        , sunlight_propagates = sunlight_propagates
-        , node_box = nodebox_of_size(size)
-        , _mcl_hardness = 1.0 + size / 8
-        , _mcl_blast_resistance = 1 + size / 2
-        , _mcl_silk_touch_drop = true
-        }
-    )
-end
-
--- BASE BLOCKS
--- These blocks are able to absorb water or lava from above them.
-
-make_dripstone(
-    dry_dripstone_block,
-    "Dripstone block",
-    "Dripstone block that can suck up liquids above it and creates stalactites below it.",
-    dry_dripstone_tiles,
-    dry_dripstone_spike,
-    8
-)
-make_dripstone(
-    hardened_dripstone_block,
-    "Hardened dripstone block",
-    "Dripstone block that is no longer able to absorb liquids above it.",
-    hardened_dripstone_tiles,
-    dry_dripstone_spike,
-    8
-)
-make_dripstone(
-    molten_dripstone_block,
-    "Molten dripstone block",
-    "A dripstone block that has absorbed some lava, allowing it to form a stalactite.",
-    molten_dripstone_tiles,
-    dry_dripstone_spike,
-    8
-)
-make_dripstone(
-watered_dripstone_block,
-    "Watered dripstone block",
-    "A dripstone block that has absorbed some water, allowing it to form a stalactite.",
-    watered_dripstone_tiles,
-    dry_dripstone_spike,
-    8
-)
-
--- HUGE DRIPSTONE
--- This is the largest form a non-block can get.
-
-make_dripstone(
-    dry_dripstone_huge,
-    "Huge dripstone",
-    "Dripstone in the largest shape it can reach.",
-    dry_dripstone_tiles,
-    dry_dripstone_spike,
-    7
-)
-make_dripstone(
-    hardened_dripstone_huge,
-    "Huge hardened dripstone",
-    "Dripstone in the largest shape it can reach. It is no longer able to grow or absorb liquids.",
-    hardened_dripstone_tiles,
-    hardened_dripstone_spike,
-    7
-)
-make_dripstone(
-    molten_dripstone_huge,
-    "Huge molten dripstone",
-    "Dripstone in the largest shape it can reach. It has absorbed some lava, but it can no longer grow in thickness.",
-    molten_dripstone_tiles,
-    dry_dripstone_spike,
-    7
-)
-make_dripstone(
-    watered_dripstone_huge,
-    "Huge watered dripstone",
-    "Dripstone in the largest shape it can reach. It has absorbed some water, but it can no longer grow in thickness.",
-    watered_dripstone_tiles,
-    dry_dripstone_spike,
-    7
-)
-
--- LARGE DRIPSTONE
-
-make_dripstone(
-    dry_dripstone_large,
-    "Large dripstone",
-    "A thick layer of dripstone.",
-    dry_dripstone_tiles,
-    dry_dripstone_spike,
-    6
-)
-make_dripstone(
-    hardened_dripstone_large,
-    "Large hardened dripstone",
-    "A thick layer of dripstone. It is no longer able to grow or absorb liquids.",
-    hardened_dripstone_tiles,
-    hardened_dripstone_spike,
-    6
-)
-make_dripstone(
-    molten_dripstone_large,
-    "Large molten dripstone",
-    "A thick layer of dripstone. It has absorbed some lava, so it is able to grow in thickness.",
-    molten_dripstone_tiles,
-    dry_dripstone_spike,
-    6
-)
-make_dripstone(
-    watered_dripstone_large,
-    "Large watered dripstone",
-    "A thick layer of dripstone. It has absorbed some water, so it is able to grow in thickness.",
-    watered_dripstone_tiles,
-    dry_dripstone_spike,
-    6
-)
-
--- GREAT DRIPSTONE
-
-make_dripstone(
-    dry_dripstone_great,
-    "Great dripstone",
-    "A thick layer of dripstone.",
-    dry_dripstone_tiles,
-    dry_dripstone_spike,
-    5
-)
-make_dripstone(
-    hardened_dripstone_great,
-    "Great hardened dripstone",
-    "A thick layer of dripstone. It is no longer able to grow or absorb liquids.",
-    hardened_dripstone_tiles,
-    hardened_dripstone_spike,
-    5
-)
-make_dripstone(
-    molten_dripstone_great,
-    "Great molten dripstone",
-    "A thick layer of dripstone. It has absorbed some lava, so it is able to grow in thickness.",
-    molten_dripstone_tiles,
-    dry_dripstone_spike,
-    5
-)
-make_dripstone(
-    watered_dripstone_great,
-    "Great watered dripstone",
-    "A thick layer of dripstone. It has absorbed some water, so it is able to grow in thickness.",
-    watered_dripstone_tiles,
-    dry_dripstone_spike,
-    5
-)
-
--- MEDIUM DRIPSTONE
-
-make_dripstone(
-    dry_dripstone_medium,
-    "Medium dripstone",
-    "A thick layer of dripstone.",
-    dry_dripstone_tiles,
-    dry_dripstone_spike,
-    4
-)
-make_dripstone(
-    hardened_dripstone_medium,
-    "Medium hardened dripstone",
-    "A thick layer of dripstone. It is no longer able to grow or absorb liquids.",
-    hardened_dripstone_tiles,
-    hardened_dripstone_spike,
-    4
-)
-make_dripstone(
-    molten_dripstone_medium,
-    "Medium molten dripstone",
-    "A thick layer of dripstone. It has absorbed some lava, so it is able to grow in thickness.",
-    molten_dripstone_tiles,
-    dry_dripstone_spike,
-    4
-)
-make_dripstone(
-    watered_dripstone_medium,
-    "Medium watered dripstone",
-    "A thick layer of dripstone. It has absorbed some water, so it is able to grow in thickness.",
-    watered_dripstone_tiles,
-    dry_dripstone_spike,
-    4
-)
-
--- SMALL DRIPSTONE
-
-make_dripstone(
-    dry_dripstone_small,
-    "Small dripstone",
-    "A thick layer of dripstone.",
-    dry_dripstone_tiles,
-    dry_dripstone_spike,
-    3
-)
-make_dripstone(
-    hardened_dripstone_small,
-    "Small hardened dripstone",
-    "A thick layer of dripstone. It is no longer able to grow or absorb liquids.",
-    hardened_dripstone_tiles,
-    hardened_dripstone_spike,
-    3
-)
-make_dripstone(
-    molten_dripstone_small,
-    "Small molten dripstone",
-    "A thick layer of dripstone. It has absorbed some lava, so it is able to grow in thickness.",
-    molten_dripstone_tiles,
-    dry_dripstone_spike,
-    3
-)
-make_dripstone(
-    watered_dripstone_small,
-    "Small watered dripstone",
-    "A thick layer of dripstone. It has absorbed some water, so it is able to grow in thickness.",
-    watered_dripstone_tiles,
-    dry_dripstone_spike,
-    3
-)
-
--- TINY DRIPSTONE
-
-make_dripstone(
-    dry_dripstone_tiny,
-    "Tiny dripstone",
-    "A thick layer of dripstone.",
-    dry_dripstone_tiles,
-    dry_dripstone_spike,
-    2
-)
-make_dripstone(
-    hardened_dripstone_tiny,
-    "Tiny hardened dripstone",
-    "A thick layer of dripstone. It is no longer able to grow or absorb liquids.",
-    hardened_dripstone_tiles,
-    hardened_dripstone_spike,
-    2
-)
-make_dripstone(
-    molten_dripstone_tiny,
-    "Tiny molten dripstone",
-    "A thick layer of dripstone. It has absorbed some lava, so it is able to grow in thickness.",
-    molten_dripstone_tiles,
-    dry_dripstone_spike,
-    2
-)
-make_dripstone(
-    watered_dripstone_tiny,
-    "Tiny watered dripstone",
-    "A thick layer of dripstone. It has absorbed some water, so it is able to grow in thickness.",
-    watered_dripstone_tiles,
-    dry_dripstone_spike,
-    2
-)
-
--- DRIPSTONE SPIKE
-
-make_dripstone(
-    dry_dripstone_spike,
-    "Dripstone spike",
-    "A thick layer of dripstone.",
-    dry_dripstone_tiles,
-    dry_dripstone_spike,
-    1
-)
-make_dripstone(
-    hardened_dripstone_spike,
-    "Hardened dripstone spike",
-    "A thick layer of dripstone. It is no longer able to grow or absorb liquids.",
-    hardened_dripstone_tiles,
-    hardened_dripstone_spike,
-    1
-)
-make_dripstone(
-    molten_dripstone_spike,
-    "Molten dripstone spike",
-    "A thick layer of dripstone. It has absorbed some lava, so it is able to grow in thickness.",
-    molten_dripstone_tiles,
-    dry_dripstone_spike,
-    1
-)
-make_dripstone(
-    watered_dripstone_spike,
-    "Watered dripstone spike",
-    "A thick layer of dripstone. It has absorbed some water, so it is able to grow in thickness.",
-    watered_dripstone_tiles,
-    dry_dripstone_spike,
-    1
-)
-
--- ACTIONS
-
-local function absorb_liquid(pos, node, aoc, aocw)
-    local node_above = minetest.get_node({ x = pos.x, y = pos.y + 1, z = pos.z }) or {}
-    local na_name = node_above.name
-
-    for _, water in pairs(noordstar_dripstone.water_nodes) do
-        if water == na_name then
-            -- Make block watery
-            node.name = watered_dripstone_block
-            minetest.set_node(pos, node)
-            return
-        end
-    end
-
-    for _, lava in pairs(noordstar_dripstone.lava_nodes) do
-        if lava == na_name then
-            -- Make block molten
-            node.name = molten_dripstone_block
-            minetest.set_node(pos, node)
-            return
-        end
-    end
-end
-
-local function drop_down_to(options, dry_up_node_name)
-    return function(pos, node, aoc, aocw)
-        for i = 1, 25 do
-            local pos_rel = { x = pos.x, y = pos.y - i, z = pos.z }
-            local node_rel = minetest.get_node(pos_rel) or {}
-            local node_name = node_rel.name or ""
-
-            if node_name == "air" then
-            else
-                -- Non-air node has been found!
-                -- Check if it reacts to the dripstone and if it can be
-                -- activated.
-                for _, option in pairs(options) do
-                    if node_name == option.from then
-                        node_rel.name = option.to
-                        node.name = dry_up_node_name
-
-                        minetest.set_node(pos, node)
-                        minetest.set_node(pos_rel, node_rel)
-                        return
-                    end
-                end
-
-                -- The node cannot be changed and hence a new spike starts on top
-                -- of it.
-                if i > 1 then
-                    pos_rel = { x = pos.x, y = pos.y - i + 1, z = pos.z }
-                    minetest.set_node(pos_rel, { name = dry_dripstone_spike })
-
-                    node.name = dry_up_node_name
-                    minetest.set_node(pos, node)
-                end
-                return
-            end
-        end
-    end
-end
-
-local function grow_to(dry_grown_node_name)
-    return function(pos, node, aoc, aocw)
-        node.name = dry_grown_node_name
-        minetest.set_node(pos, node)
-    end
-end
-
-local function harden(harden_nodes_func)
-    return function(pos, node, aoc, aocw)
-        local node_above = minetest.get_node({ x = pos.x, y = pos.y + 1, z = pos.z }) or {}
-        local na_name = node_above.name
-
-        for _, hardener in pairs(harden_nodes_func()) do
-            if hardener == na_name then
-                -- Harden dripstone block
-                node.name = hardened_dripstone_block
-                minetest.set_node(pos, node)
-                return
-            end
-        end
-    end
-end
-
-local function trickle_down(options, dry_up_node_name)
-    return function(pos, node, aoc, aocw)
-        local pos_below = { x = pos.x, y = pos.y - 1, z = pos.z }
-        local node_below = minetest.get_node(pos_below) or {}
-        local nb_name = node_below.name or ""
-
-        for _, option in pairs(options) do
-            local expected_node_name = option.from or nil
-            local resulted_node_name = option.to
-
-            if nb_name == expected_node_name then
-                node.name = dry_up_node_name
-                node_below.name = resulted_node_name
-
-                minetest.set_node(pos, node)
-                minetest.set_node(pos_below, node_below)
-                return
-            end
-        end
-    end
-end
-
-local function make_abm(nodename, expected_duration, action)
-    minetest.register_abm(
-        { nodenames = { nodename }
-        , interval = expected_duration / samples_per_interval
-        , chance = samples_per_interval
-        , catch_up = true
-        , action = action
-    }
-)
-end
-
--- ABSORB LIQUIDS
-
-make_abm(dry_dripstone_block, seconds_per_water_trickle, absorb_liquid)
-make_abm(molten_dripstone_block, seconds_per_lava_trickle, harden(function ()
-    return noordstar_dripstone.water_nodes
-end))
-make_abm(watered_dripstone_block, seconds_per_water_trickle, harden(function ()
-    return noordstar_dripstone.lava_nodes
-end))
-
--- TRICKLE DOWN
-
-make_abm(molten_dripstone_block, seconds_per_lava_trickle, trickle_down(lava_trickle_down, dry_dripstone_block))
-make_abm(watered_dripstone_block, seconds_per_water_trickle, trickle_down(water_trickle_down, dry_dripstone_block))
-make_abm(molten_dripstone_huge, seconds_per_lava_trickle, trickle_down(lava_trickle_down, dry_dripstone_huge))
-make_abm(watered_dripstone_huge, seconds_per_water_trickle, trickle_down(water_trickle_down, dry_dripstone_huge))
-make_abm(molten_dripstone_large, seconds_per_lava_trickle, trickle_down(lava_trickle_down, dry_dripstone_large))
-make_abm(watered_dripstone_large, seconds_per_water_trickle, trickle_down(water_trickle_down, dry_dripstone_large))
-make_abm(molten_dripstone_great, seconds_per_lava_trickle, trickle_down(lava_trickle_down, dry_dripstone_great))
-make_abm(watered_dripstone_great, seconds_per_water_trickle, trickle_down(water_trickle_down, dry_dripstone_great))
-make_abm(molten_dripstone_medium, seconds_per_lava_trickle, trickle_down(lava_trickle_down, dry_dripstone_medium))
-make_abm(watered_dripstone_medium, seconds_per_water_trickle, trickle_down(water_trickle_down, dry_dripstone_medium))
-make_abm(molten_dripstone_small, seconds_per_lava_trickle, trickle_down(lava_trickle_down, dry_dripstone_small))
-make_abm(watered_dripstone_small, seconds_per_water_trickle, trickle_down(water_trickle_down, dry_dripstone_small))
-make_abm(molten_dripstone_tiny, seconds_per_lava_trickle, trickle_down(lava_trickle_down, dry_dripstone_tiny))
-make_abm(watered_dripstone_tiny, seconds_per_water_trickle, trickle_down(water_trickle_down, dry_dripstone_tiny))
-make_abm(molten_dripstone_spike, seconds_per_lava_trickle, trickle_down(lava_trickle_down_spike, dry_dripstone_spike))
-make_abm(watered_dripstone_spike, seconds_per_water_trickle, trickle_down(water_trickle_down_spike, dry_dripstone_spike))
-
--- GROW
-
-make_abm(molten_dripstone_large, seconds_per_growth*(14*14 - 12*12), grow_to(dry_dripstone_huge))
-make_abm(watered_dripstone_large, seconds_per_growth*(14*14 - 12*12), grow_to(dry_dripstone_huge))
-make_abm(molten_dripstone_great, seconds_per_growth*(12*12 - 10*10), grow_to(dry_dripstone_large))
-make_abm(watered_dripstone_great, seconds_per_growth*(12*12 - 10*10), grow_to(dry_dripstone_large))
-make_abm(molten_dripstone_medium, seconds_per_growth*(10*10 - 8*8), grow_to(dry_dripstone_great))
-make_abm(watered_dripstone_medium, seconds_per_growth*(10*10 - 8*8), grow_to(dry_dripstone_great))
-make_abm(molten_dripstone_small, seconds_per_growth*(8*8 - 6*6), grow_to(dry_dripstone_medium))
-make_abm(watered_dripstone_small, seconds_per_growth*(8*8 - 6*6), grow_to(dry_dripstone_medium))
-make_abm(molten_dripstone_tiny, seconds_per_growth*(6*6 - 4*4), grow_to(dry_dripstone_small))
-make_abm(watered_dripstone_tiny, seconds_per_growth*(6*6 - 4*4), grow_to(dry_dripstone_small))
-make_abm(molten_dripstone_spike, seconds_per_growth*(4*4 - 2*2), grow_to(dry_dripstone_tiny))
-make_abm(watered_dripstone_spike, seconds_per_growth*(4*4 - 2*2), grow_to(dry_dripstone_tiny))
-
--- DROP DOWN
-
-make_abm(molten_dripstone_spike, seconds_per_lava_trickle, drop_down_to(lava_drop_down, dry_dripstone_spike))
-make_abm(watered_dripstone_spike, seconds_per_water_trickle, drop_down_to(water_drop_down, dry_dripstone_spike))
-
--- CRATING RECIPES
-
-local function gapple_recipe(gold, apple, gapple)
-    minetest.register_craft({
-        output = gapple,
-        recipe = {
-            { gold,  gold, gold },
-            { gold, apple, gold },
-            { gold,  gold, gold },
-        }
-    })
-end
-
-gapple_recipe(dry_dripstone_spike, dry_dripstone_spike, dry_dripstone_tiny)
-gapple_recipe(dry_dripstone_spike, dry_dripstone_tiny, dry_dripstone_small)
-gapple_recipe(dry_dripstone_spike, dry_dripstone_small, dry_dripstone_medium)
-gapple_recipe(dry_dripstone_spike, dry_dripstone_medium, dry_dripstone_great)
-gapple_recipe(dry_dripstone_spike, dry_dripstone_great, dry_dripstone_large)
-gapple_recipe(dry_dripstone_spike, dry_dripstone_large, dry_dripstone_huge)
-gapple_recipe(hardened_dripstone_spike, hardened_dripstone_spike, hardened_dripstone_tiny)
-gapple_recipe(hardened_dripstone_spike, hardened_dripstone_tiny, hardened_dripstone_small)
-gapple_recipe(hardened_dripstone_spike, hardened_dripstone_small, hardened_dripstone_medium)
-gapple_recipe(hardened_dripstone_spike, hardened_dripstone_medium, hardened_dripstone_great)
-gapple_recipe(hardened_dripstone_spike, hardened_dripstone_great, hardened_dripstone_large)
-gapple_recipe(hardened_dripstone_spike, hardened_dripstone_large, hardened_dripstone_huge)
-gapple_recipe(molten_dripstone_spike, molten_dripstone_spike, molten_dripstone_tiny)
-gapple_recipe(molten_dripstone_spike, molten_dripstone_tiny, molten_dripstone_small)
-gapple_recipe(molten_dripstone_spike, molten_dripstone_small, molten_dripstone_medium)
-gapple_recipe(molten_dripstone_spike, molten_dripstone_medium, molten_dripstone_great)
-gapple_recipe(molten_dripstone_spike, molten_dripstone_great, molten_dripstone_large)
-gapple_recipe(molten_dripstone_spike, molten_dripstone_large, molten_dripstone_huge)
-gapple_recipe(watered_dripstone_spike, watered_dripstone_spike, watered_dripstone_tiny)
-gapple_recipe(watered_dripstone_spike, watered_dripstone_tiny, watered_dripstone_small)
-gapple_recipe(watered_dripstone_spike, watered_dripstone_small, watered_dripstone_medium)
-gapple_recipe(watered_dripstone_spike, watered_dripstone_medium, watered_dripstone_great)
-gapple_recipe(watered_dripstone_spike, watered_dripstone_great, watered_dripstone_large)
-gapple_recipe(watered_dripstone_spike, watered_dripstone_large, watered_dripstone_huge)