merge upstream / solve conflicts

.luacheckrc

@@ -7,6 +7,9 @@ read_globals = {
 	"default",
 	"stairs", "doors", "xpanes",
 	"xdecor", "xbg",
-	table = { fields = { "copy" } },
+	table = {fields = {"copy"}},
+	string = {fields = {"split"}},
 	"unpack",
+	"stairsplus",
+	"mesecon"
 }

depends.txt

@@ -8,4 +8,5 @@ stairs
 xpanes
 fire?
 oresplus?
-moreblocks?
+moreblocks?
+mesecons_doors?

handlers/animations.lua

@@ -19,24 +19,29 @@ function xdecor.sit(pos, node, clicker, pointed_thing)
 	if default.player_attached[player_name] then
 		pos.y = pos.y - 0.5
 		clicker:setpos(pos)
-		clicker:set_eye_offset({x=0, y=0, z=0}, {x=0, y=0, z=0})
+		clicker:set_eye_offset(vector.new(), vector.new())
-		clicker:set_physics_override(1, 1, 1)
+		clicker:set_physics_override({speed = 1, jump = 1, gravity = 1})
 		default.player_attached[player_name] = false
 		default.player_set_animation(clicker, "stand", 30)
 
 	elseif not default.player_attached[player_name] and node.param2 <= 3 and
-			not ctrl.sneak and vector.equals(vel, {x=0,y=0,z=0}) then
+			not ctrl.sneak and vector.equals(vel, vector.new()) then
 
-		clicker:set_eye_offset({x=0, y=-7, z=2}, {x=0, y=0, z=0})
+		clicker:set_eye_offset({x = 0, y = -7, z = 2}, vector.new())
-		clicker:set_physics_override(0, 0, 0)
+		clicker:set_physics_override({speed = 0, jump = 0, gravity = 1})
 		clicker:setpos(pos)
 		default.player_attached[player_name] = true
 		default.player_set_animation(clicker, "sit", 30)
 
-		if     node.param2 == 0 then clicker:set_look_yaw(3.15)
+		if node.param2 == 0 then
-		elseif node.param2 == 1 then clicker:set_look_yaw(7.9)
+			clicker:set_look_yaw(3.15)
-		elseif node.param2 == 2 then clicker:set_look_yaw(6.28)
+		elseif node.param2 == 1 then
-		elseif node.param2 == 3 then clicker:set_look_yaw(4.75) end
+			clicker:set_look_yaw(7.9)
+		elseif node.param2 == 2 then
+			clicker:set_look_yaw(6.28)
+		elseif node.param2 == 3 then
+			clicker:set_look_yaw(4.75)
+		end
 	end
 end
 
@@ -47,6 +52,7 @@ function xdecor.sit_dig(pos, digger)
 			return false
 		end
 	end
+
 	return true
 end
 

handlers/helpers.lua

@@ -2,21 +2,31 @@
 function xdecor.maxn(T)
 	local n = 0
 	for k in pairs(T) do
-		if k > n then n = k end
+		if k > n then
+			n = k
+		end
 	end
+
 	return n
 end
 
 -- Returns the length of an hash table.
 function xdecor.tablelen(T)
 	local n = 0
-	for _ in pairs(T) do n = n + 1 end
+
+	for _ in pairs(T) do
+		n = n + 1
+	end
+
 	return n
 end
 
 -- Deep copy of a table. Borrowed from mesecons mod (https://github.com/Jeija/minetest-mod-mesecons).
 function xdecor.tablecopy(T)
-	if type(T) ~= "table" then return T end -- No need to copy.
+	if type(T) ~= "table" then
+		return T -- No need to copy.
+	end
+
 	local new = {}
 
 	for k, v in pairs(T) do
@@ -26,6 +36,7 @@ function xdecor.tablecopy(T)
 			new[k] = v
 		end
 	end
+
 	return new
 end
 

handlers/nodeboxes.lua

@@ -1,7 +1,13 @@
 xdecor.box = {
 	slab_y = function(height, shift)
-		return {-0.5, -0.5 + (shift or 0), -0.5, 0.5, -0.5 + height +
+		return {
-			(shift or 0), 0.5}
+			-0.5,
+			-0.5 + (shift or 0),
+			-0.5,
+			 0.5,
+			-0.5 + height + (shift or 0),
+			 0.5
+		}
 	end,
 	slab_z = function(depth)
 		return {-0.5, -0.5, -0.5 + depth, 0.5, 0.5, 0.5}
@@ -15,16 +21,18 @@ xdecor.box = {
 }
 
 xdecor.nodebox = {
-	regular = {type="regular"},
+	regular = {type = "regular"},
-	null = {type="fixed", fixed={0,0,0,0,0,0}}
+	null = {
+		type = "fixed", fixed = {0,0,0,0,0,0}
+	}
 }
 
 xdecor.pixelbox = function(size, boxes)
 	local fixed = {}
-	for _, box in pairs(boxes) do
+	for _, box in ipairs(boxes) do
 		-- `unpack` has been changed to `table.unpack` in newest Lua versions.
 		local x, y, z, w, h, l = unpack(box)
-		fixed[#fixed+1] = {
+		fixed[#fixed + 1] = {
 			(x / size) - 0.5,
 			(y / size) - 0.5,
 			(z / size) - 0.5,
@@ -33,26 +41,27 @@ xdecor.pixelbox = function(size, boxes)
 			((z + l) / size) - 0.5
 		}
 	end
-	return {type="fixed", fixed=fixed}
+
+	return {type = "fixed", fixed = fixed}
 end
 
 local mt = {}
+
 mt.__index = function(table, key)
 	local ref = xdecor.box[key]
 	local ref_type = type(ref)
 
 	if ref_type == "function" then
 		return function(...)
-			return {type="fixed", fixed=ref(...)}
+			return {type = "fixed", fixed = ref(...)}
 		end
 	elseif ref_type == "table" then
-		return {type="fixed", fixed=ref}
+		return {type = "fixed", fixed = ref}
 	elseif ref_type == "nil" then
-		error(key.."could not be found among nodebox presets and functions")
+		error(key .. "could not be found among nodebox presets and functions")
 	end
 
-	error("unexpected datatype "..tostring(type(ref)).." while looking for "..key)
+	error("unexpected datatype " .. tostring(type(ref)) .. " while looking for " .. key)
 end
 
 setmetatable(xdecor.nodebox, mt)
-

handlers/registration.lua

@@ -1,4 +1,4 @@
-xbg = default.gui_bg..default.gui_bg_img..default.gui_slots
+xbg = default.gui_bg .. default.gui_bg_img .. default.gui_slots
 local default_inventory_size = 32
 
 local default_inventory_formspecs = {
@@ -6,30 +6,30 @@ local default_inventory_formspecs = {
 		list[context;main;0,0;8,1;]
 		list[current_player;main;0,2;8,4;]
 		listring[current_player;main]
-		listring[context;main] ]]
+		listring[context;main] ]] ..
-		..default.get_hotbar_bg(0,2),
+		default.get_hotbar_bg(0,2),
 
 	["16"] = [[ size[8,7]
 		list[context;main;0,0;8,2;]
 		list[current_player;main;0,3;8,4;]
 		listring[current_player;main]
-		listring[context;main] ]]
+		listring[context;main] ]] ..
-		..default.get_hotbar_bg(0,3),
+		default.get_hotbar_bg(0,3),
 
 	["24"] = [[ size[8,8]
 		list[context;main;0,0;8,3;]
 		list[current_player;main;0,4;8,4;]
 		listring[current_player;main]
-		listring[context;main]" ]]
+		listring[context;main]" ]] ..
-		..default.get_hotbar_bg(0,4),
+		default.get_hotbar_bg(0,4),
 
 	["32"] = [[ size[8,9]
 		list[context;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_player;main]
-		listring[context;main] ]]
+		listring[context;main] ]] ..
-		..default.get_hotbar_bg(0,4.85)
+		default.get_hotbar_bg(0,4.85)
 }
 
 local function get_formspec_by_size(size)
@@ -42,13 +42,13 @@ local default_can_dig = function(pos)
 	return inv:is_empty("main")
 end
 
-function xdecor.register(name, def)
+local function xdecor_stairs_alternative(nodename, def)
-	local function xdecor_stairs_alternative(nodename, def)
 		local mod, name = nodename:match("(.*):(.*)")
+
 		for groupname, value in pairs(def.groups) do
 			if groupname ~= "cracky"    and groupname ~= "choppy"  and
 			   groupname ~= "flammable" and groupname ~= "crumbly" and
-			   groupname ~= "snappy"    then
+			   groupname ~= "snappy" then
 				def.groups.groupname = nil
 			end
 		end
@@ -65,17 +65,18 @@ function xdecor.register(name, def)
 					sounds = def.sounds,
 				}
 			)
-		elseif minetest.get_modpath("stairs") then	
+		elseif minetest.get_modpath("stairs") then
 			stairs.register_stair_and_slab(name,nodename,
 				def.groups,
 				def.tiles,
 				("%s Stair"):format(def.description),
 				("%s Slab"):format(def.description),
 				def.sounds
-			)	
+			)
-		end	
+		end
 	end
 
+function xdecor.register(name, def)
 	def.drawtype = def.drawtype or (def.mesh and "mesh") or (def.node_box and "nodebox")
 	def.sounds = def.sounds or default.node_sound_defaults()
 
@@ -108,11 +109,14 @@ function xdecor.register(name, def)
 
 			local size = inventory.size or default_inventory_size
 			local inv = meta:get_inventory()
+
 			inv:set_size("main", size)
-			meta:set_string("formspec", (inventory.formspec or
+			meta:set_string("formspec",
-					get_formspec_by_size(size))..xbg)
+				(inventory.formspec or get_formspec_by_size(size)) .. xbg)
 		end
+
 		def.can_dig = def.can_dig or default_can_dig
+
 	elseif infotext and not def.on_construct then
 		def.on_construct = function(pos)
 			local meta = minetest.get_meta(pos)
@@ -120,12 +124,12 @@ function xdecor.register(name, def)
 		end
 	end
 
-	minetest.register_node("xdecor:"..name, def)
+	minetest.register_node("xdecor:" .. name, def)
 
 	local workbench = minetest.settings:get_bool("enable_xdecor_workbench")
 
 	if workbench == false and
-	   (minetest.get_modpath("moreblocks") or minetest.get_modpath("stairs")) then
+	  (minetest.get_modpath("moreblocks") or minetest.get_modpath("stairs")) then
 		if xdecor.stairs_valid_def(def) then
 			xdecor_stairs_alternative("xdecor:"..name, def)
 		end

init.lua

@@ -1,29 +1,15 @@
 --local t = os.clock()
 
-local mver_major, mver_minor, mver_patch = 0, 4, 16 -- Minetest 0.4.16 minimum.
-
-local client_version = minetest.get_version().string
-local major, minor, patch = client_version:match("(%d+).(%d+).(%d+)")
-
-if (major and minor and patch)     and
-   ((tonumber(major) < mver_major) or
-    (mver_major == tonumber(major) and tonumber(minor) < mver_minor)  or
-    (mver_minor == tonumber(minor) and tonumber(patch) < mver_patch)) then
-	minetest.log("error", "[xdecor] Your Minetest client is too old to run this mod. Disabling.")
-	return
-end
-
 xdecor = {}
 local modpath = minetest.get_modpath("xdecor")
 
-dofile(modpath.."/handlers/animations.lua")
+dofile(modpath .. "/handlers/animations.lua")
-dofile(modpath.."/handlers/helpers.lua")
+dofile(modpath .. "/handlers/helpers.lua")
-dofile(modpath.."/handlers/nodeboxes.lua")
+dofile(modpath .. "/handlers/nodeboxes.lua")
-dofile(modpath.."/handlers/registration.lua")
+dofile(modpath .. "/handlers/registration.lua")
 
-dofile(modpath.."/src/alias.lua")
+dofile(modpath .. "/src/nodes.lua")
-dofile(modpath.."/src/nodes.lua")
+dofile(modpath .. "/src/recipes.lua")
-dofile(modpath.."/src/recipes.lua")
 
 local subpart = {
 	"chess",
@@ -34,13 +20,13 @@ local subpart = {
 	"mailbox",
 	"mechanisms",
 	"rope",
-	"workbench"
+	"workbench",
 }
 
-for _, name in pairs(subpart) do
+for _, name in ipairs(subpart) do
-	local enable = minetest.settings:get_bool("enable_xdecor_"..name)
+	local enable = minetest.settings:get_bool("enable_xdecor_" .. name)
 	if enable or enable == nil then
-		dofile(modpath.."/src/"..name..".lua")
+		dofile(modpath .. "/src/" .. name .. ".lua")
 	end
 end
 

src/chess.lua

@@ -2,9 +2,15 @@ local realchess = {}
 screwdriver = screwdriver or {}
 
 local function index_to_xy(idx)
+	if not idx then
+		return nil
+	end
+
 	idx = idx - 1
+
 	local x = idx % 8
 	local y = (idx - x) / 8
+
 	return x, y
 end
 
@@ -19,14 +25,6 @@ end
 local chat_prefix = minetest.colorize("#FFFF00", "[Chess] ")
 local letters = {'A','B','C','D','E','F','G','H'}
 
-local rowDirs = {-1, -1, -1, 0, 0, 1, 1, 1}
-local colDirs = {-1, 0, 1, -1, 1, -1, 0, 1}
-
-local bishopThreats = {true,  false, true,  false, false, true,  false, true}
-local rookThreats   = {false, true,  false, true,  true,  false, true,  false}
-local queenThreats  = {true,  true,  true,  true,  true,  true,  true,  true}
-local kingThreats   = {true,  true,  true,  true,  true,  true,  true,  true}
-
 local function board_to_table(inv)
 	local t = {}
 	for i = 1, 64 do
@@ -36,6 +34,431 @@ local function board_to_table(inv)
 	return t
 end
 
+local piece_values = {
+	pawn   = 10,
+	knight = 30,
+	bishop = 30,
+	rook   = 50,
+	queen  = 90,
+	king   = 900
+}
+
+local function get_possible_moves(board, from_idx)
+	local piece, color = board[from_idx]:match(":(%w+)_(%w+)")
+	if not piece then return end
+	local moves = {}
+	local from_x, from_y = index_to_xy(from_idx)
+
+	for i = 1, 64 do
+		local stack_name = board[i]
+		if stack_name:find((color == "black" and "white" or "black")) or
+				stack_name == "" then
+			moves[i] = 0
+		end
+	end
+
+	for to_idx in pairs(moves) do
+		local pieceTo    = board[to_idx]
+		local to_x, to_y = index_to_xy(to_idx)
+
+		-- PAWN
+		if piece == "pawn" then
+			if color == "white" then
+				local pawnWhiteMove = board[xy_to_index(from_x, from_y - 1)]
+				-- white pawns can go up only
+				if from_y - 1 == to_y then
+					if from_x == to_x then
+						if pieceTo ~= "" then
+							moves[to_idx] = nil
+						end
+					elseif from_x - 1 == to_x or from_x + 1 == to_x then
+						if not pieceTo:find("black") then
+							moves[to_idx] = nil
+						end
+					else
+						moves[to_idx] = nil
+					end
+				elseif from_y - 2 == to_y then
+					if pieceTo ~= "" or from_y < 6 or pawnWhiteMove ~= "" then
+						moves[to_idx] = nil
+					end
+				else
+					moves[to_idx] = nil
+				end
+
+				--[[
+				     if x not changed
+				          ensure that destination cell is empty
+				     elseif x changed one unit left or right
+				          ensure the pawn is killing opponent piece
+				     else
+				          move is not legal - abort
+				]]
+
+				if from_x == to_x then
+					if pieceTo ~= "" then
+						moves[to_idx] = nil
+					end
+				elseif from_x - 1 == to_x or from_x + 1 == to_x then
+					if not pieceTo:find("black") then
+						moves[to_idx] = nil
+					end
+				else
+					moves[to_idx] = nil
+				end
+
+			elseif color == "black" then
+				local pawnBlackMove = board[xy_to_index(from_x, from_y + 1)]
+				-- black pawns can go down only
+				if from_y + 1 == to_y then
+					if from_x == to_x then
+						if pieceTo ~= "" then
+							moves[to_idx] = nil
+						end
+					elseif from_x - 1 == to_x or from_x + 1 == to_x then
+						if not pieceTo:find("white") then
+							moves[to_idx] = nil
+						end
+					else
+						moves[to_idx] = nil
+					end
+				elseif from_y + 2 == to_y then
+					if pieceTo ~= "" or from_y > 1 or pawnBlackMove ~= "" then
+						moves[to_idx] = nil
+					end
+				else
+					moves[to_idx] = nil
+				end
+
+				--[[
+				     if x not changed
+				          ensure that destination cell is empty
+				     elseif x changed one unit left or right
+				          ensure the pawn is killing opponent piece
+				     else
+				          move is not legal - abort
+				]]
+
+				if from_x == to_x then
+					if pieceTo ~= "" then
+						moves[to_idx] = nil
+					end
+				elseif from_x - 1 == to_x or from_x + 1 == to_x then
+					if not pieceTo:find("white") then
+						moves[to_idx] = nil
+					end
+				else
+					moves[to_idx] = nil
+				end
+			else
+				moves[to_idx] = nil
+			end
+
+		-- ROOK
+		elseif piece == "rook" then
+			if from_x == to_x then
+				-- Moving vertically
+				if from_y < to_y then
+					-- Moving down
+					-- Ensure that no piece disturbs the way
+					for i = from_y + 1, to_y - 1 do
+						if board[xy_to_index(from_x, i)] ~= "" then
+							moves[to_idx] = nil
+						end
+					end
+				else
+					-- Mocing up
+					-- Ensure that no piece disturbs the way
+					for i = to_y + 1, from_y - 1 do
+						if board[xy_to_index(from_x, i)] ~= "" then
+							moves[to_idx] = nil
+						end
+					end
+				end
+			elseif from_y == to_y then
+				-- Mocing horizontally
+				if from_x < to_x then
+					-- mocing right
+					-- ensure that no piece disturbs the way
+					for i = from_x + 1, to_x - 1 do
+						if board[xy_to_index(i, from_y)] ~= "" then
+							moves[to_idx] = nil
+						end
+					end
+				else
+					-- Mocing left
+					-- Ensure that no piece disturbs the way
+					for i = to_x + 1, from_x - 1 do
+						if board[xy_to_index(i, from_y)] ~= "" then
+							moves[to_idx] = nil
+						end
+					end
+				end
+			else
+				-- Attempt to move arbitrarily -> abort
+				moves[to_idx] = nil
+			end
+
+		-- KNIGHT
+		elseif piece == "knight" then
+			-- Get relative pos
+			local dx = from_x - to_x
+			local dy = from_y - to_y
+
+			-- Get absolute values
+			if dx < 0 then
+				dx = -dx
+			end
+
+			if dy < 0 then
+				dy = -dy
+			end
+
+			-- Sort x and y
+			if dx > dy then
+				dx, dy = dy, dx
+			end
+
+			-- Ensure that dx == 1 and dy == 2
+			if dx ~= 1 or dy ~= 2 then
+				moves[to_idx] = nil
+			end
+			-- Just ensure that destination cell does not contain friend piece
+			-- ^ It was done already thus everything ok
+
+		-- BISHOP
+		elseif piece == "bishop" then
+			-- Get relative pos
+			local dx = from_x - to_x
+			local dy = from_y - to_y
+
+			-- Get absolute values
+			if dx < 0 then
+				dx = -dx
+			end
+
+			if dy < 0 then
+				dy = -dy
+			end
+
+			-- Ensure dx and dy are equal
+			if dx ~= dy then
+				moves[to_idx] = nil
+			end
+
+			if from_x < to_x then
+				if from_y < to_y then
+					-- Moving right-down
+					-- Ensure that no piece disturbs the way
+					for i = 1, dx - 1 do
+						if board[xy_to_index(from_x + i, from_y + i)] ~= "" then
+							moves[to_idx] = nil
+						end
+					end
+				else
+					-- Moving right-up
+					-- Ensure that no piece disturbs the way
+					for i = 1, dx - 1 do
+						if board[xy_to_index(from_x + i, from_y - i)] ~= "" then
+							moves[to_idx] = nil
+						end
+					end
+				end
+			else
+				if from_y < to_y then
+					-- Moving left-down
+					-- Ensure that no piece disturbs the way
+					for i = 1, dx - 1 do
+						if board[xy_to_index(from_x - i, from_y + i)] ~= "" then
+							moves[to_idx] = nil
+						end
+					end
+				else
+					-- Moving left-up
+					-- ensure that no piece disturbs the way
+					for i = 1, dx - 1 do
+						if board[xy_to_index(from_x - i, from_y - i)] ~= "" then
+							moves[to_idx] = nil
+						end
+					end
+				end
+			end
+
+		-- QUEEN
+		elseif piece == "queen" then
+			local dx = from_x - to_x
+			local dy = from_y - to_y
+
+			-- Get absolute values
+			if dx < 0 then
+				dx = -dx
+			end
+
+			if dy < 0 then
+				dy = -dy
+			end
+
+			-- Ensure valid relative move
+			if dx ~= 0 and dy ~= 0 and dx ~= dy then
+				moves[to_idx] = nil
+			end
+
+			if from_x == to_x then
+				-- Moving vertically
+				if from_y < to_y then
+					-- Moving down
+					-- Ensure that no piece disturbs the way
+					for i = from_y + 1, to_y - 1 do
+						if board[xy_to_index(from_x, i)] ~= "" then
+							moves[to_idx] = nil
+						end
+					end
+				else
+					-- Mocing up
+					-- Ensure that no piece disturbs the way
+					for i = to_y + 1, from_y - 1 do
+						if board[xy_to_index(from_x, i)] ~= "" then
+							moves[to_idx] = nil
+						end
+					end
+				end
+			elseif from_x < to_x then
+				if from_y == to_y then
+					-- Goes right
+					-- Ensure that no piece disturbs the way
+					for i = 1, dx - 1 do
+						if board[xy_to_index(from_x + i, from_y)] ~= "" then
+							moves[to_idx] = nil
+						end
+					end
+				elseif from_y < to_y then
+					-- Goes right-down
+					-- Ensure that no piece disturbs the way
+					for i = 1, dx - 1 do
+						if board[xy_to_index(from_x + i, from_y + i)] ~= "" then
+							moves[to_idx] = nil
+						end
+					end
+				else
+					-- Goes right-up
+					-- Ensure that no piece disturbs the way
+					for i = 1, dx - 1 do
+						if board[xy_to_index(from_x + i, from_y - i)] ~= "" then
+							moves[to_idx] = nil
+						end
+					end
+				end
+			else
+				if from_y == to_y then
+					-- Mocing horizontally
+					if from_x < to_x then
+						-- mocing right
+						-- ensure that no piece disturbs the way
+						for i = from_x + 1, to_x - 1 do
+							if board[xy_to_index(i, from_y)] ~= "" then
+								moves[to_idx] = nil
+							end
+						end
+					else
+						-- Mocing left
+						-- Ensure that no piece disturbs the way
+						for i = to_x + 1, from_x - 1 do
+							if board[xy_to_index(i, from_y)] ~= "" then
+								moves[to_idx] = nil
+							end
+						end
+					end
+				elseif from_y < to_y then
+					-- Goes left-down
+					-- Ensure that no piece disturbs the way
+					for i = 1, dx - 1 do
+						if board[xy_to_index(from_x - i, from_y + i)] ~= "" then
+							moves[to_idx] = nil
+						end
+					end
+				else
+					-- Goes left-up
+					-- Ensure that no piece disturbs the way
+					for i = 1, dx - 1 do
+						if board[xy_to_index(from_x - i, from_y - i)] ~= "" then
+							moves[to_idx] = nil
+						end
+					end
+				end
+			end
+
+		-- KING
+		elseif piece == "king" then
+			local dx = from_x - to_x
+			local dy = from_y - to_y
+
+			if dx < 0 then
+				dx = -dx
+			end
+
+			if dy < 0 then
+				dy = -dy
+			end
+
+			if dx > 1 or dy > 1 then
+				moves[to_idx] = nil
+			end
+		end
+	end
+
+	if not next(moves) then return end
+
+	for i in pairs(moves) do
+		local stack_name = board[tonumber(i)]
+		if stack_name ~= "" then
+			for p, value in pairs(piece_values) do
+				if stack_name:find(p) then
+					moves[i] = value
+				end
+			end
+		end
+	end
+
+	return moves
+end
+
+local function best_move(moves)
+	local value, choices = 0, {}
+
+	for from, _ in pairs(moves) do
+	for to, val in pairs(_) do
+		if val > value then
+			value = val
+			choices = {{
+				from = from,
+				to = to
+			}}
+		elseif val == value then
+			choices[#choices + 1] = {
+				from = from,
+				to = to
+			}
+		end
+	end
+	end
+
+	local random = math.random(1, #choices)
+	local choice_from, choice_to = choices[random].from, choices[random].to
+
+	return tonumber(choice_from), choice_to
+end
+
+local rowDirs = {-1, -1, -1, 0, 0, 1, 1, 1}
+local colDirs = {-1, 0, 1, -1, 1, -1, 0, 1}
+
+local rowDirsKnight = { 2,  1, 2, 1, -2, -1, -2, -1}
+local colDirsKnight = {-1, -2, 1, 2,  1,  2, -1, -2}
+
+local bishopThreats = {true,  false, true,  false, false, true,  false, true}
+local rookThreats   = {false, true,  false, true,  true,  false, true,  false}
+local queenThreats  = {true,  true,  true,  true,  true,  true,  true,  true}
+local kingThreats   = {true,  true,  true,  true,  true,  true,  true,  true}
+
 local function attacked(color, idx, board)
 	local threatDetected = false
 	local kill           = color == "white"
@@ -78,6 +501,21 @@ local function attacked(color, idx, board)
 					end
 				end
 			end
+
+			local colK, rowK = index_to_xy(idx)
+			colK, rowK = colK + 1, rowK + 1
+			rowK = rowK + rowDirsKnight[dir]
+			colK = colK + colDirsKnight[dir]
+
+			if rowK >= 1 and rowK <= 8 and colK >= 1 and colK <= 8 then
+				local square            = get_square(rowK, colK)
+				local square_name       = board[square]
+				local piece, pieceColor = square_name:match(":(%w+)_(%w+)")
+
+				if piece and pieceColor ~= color and piece == "knight" then
+					threatDetected = true
+				end
+			end
 		end
 	end
 
@@ -147,6 +585,14 @@ for i = 1, #pieces do
 end
 pieces_str = pieces_str .. "69=mailbox_blank16.png"
 
+local fs_init = [[
+	size[4,1.2;]
+	no_prepend[]
+	label[0,0;Select a mode:]
+	button[0,0.5;2,1;single;Singleplayer]
+	button[2,0.5;2,1;multi;Multiplayer]
+]]
+
 local fs = [[
 	size[14.7,10;]
 	no_prepend[]
@@ -159,7 +605,34 @@ local fs = [[
 ]] ..  "tablecolumns[image," .. pieces_str ..
 		";text;color;text;color;text;image," .. pieces_str .. "]"
 
-local function get_moves_list(meta, pieceFrom, pieceTo, pieceTo_s, from_x, to_x, from_y, to_y)
+local function update_formspec(meta)
+	local black_king_attacked = meta:get_string("blackAttacked") == "true"
+	local white_king_attacked = meta:get_string("whiteAttacked") == "true"
+
+	local playerWhite = meta:get_string("playerWhite")
+	local playerBlack = meta:get_string("playerBlack")
+
+	local moves     = meta:get_string("moves")
+	local eaten_img = meta:get_string("eaten_img")
+	local lastMove  = meta:get_string("lastMove")
+	local turnBlack = minetest.colorize("#000001", (lastMove == "white" and playerBlack ~= "") and
+			  playerBlack .. "..." or playerBlack)
+	local turnWhite = minetest.colorize("#000001", (lastMove == "black" and playerWhite ~= "") and
+			  playerWhite .. "..." or playerWhite)
+	local check_s   = minetest.colorize("#FF0000", "\\[check\\]")
+
+	local formspec = fs ..
+		"label[1.9,0.3;"  .. turnBlack .. (black_king_attacked and " " .. check_s or "") .. "]" ..
+		"label[1.9,9.15;" .. turnWhite .. (white_king_attacked and " " .. check_s or "") .. "]" ..
+		"table[8.9,1.05;5.07,3.75;moves;" .. moves:sub(1,-2) .. ";1]" ..
+		eaten_img
+
+	meta:set_string("formspec", formspec)
+end
+
+local function get_moves_list(meta, pieceFrom, pieceTo, pieceTo_s, from_idx, to_idx)
+	local from_x, from_y  = index_to_xy(from_idx)
+	local to_x, to_y      = index_to_xy(to_idx)
 	local moves           = meta:get_string("moves")
 	local pieceFrom_s     = pieceFrom:match(":(%w+_%w+)")
 	local pieceFrom_si_id = pieces_str:match("(%d+)=" .. pieceFrom_s)
@@ -202,7 +675,7 @@ local function get_eaten_list(meta, pieceTo, pieceTo_s)
 		end
 
 		eaten_img = eaten_img ..
-			"image[" .. ((X + (is_white and 11.7 or 8.8)) - (X * 0.45)) .. "," ..
+			"image[" .. ((X + (is_white and 11.67 or 8.8)) - (X * 0.45)) .. "," ..
 				    ((Y + 5.56) - (Y * 0.2)) .. ";1,1;" .. eaten_t[i] .. ".png]"
 	end
 
@@ -213,7 +686,7 @@ function realchess.init(pos)
 	local meta = minetest.get_meta(pos)
 	local inv  = meta:get_inventory()
 
-	meta:set_string("formspec", fs)
+	meta:set_string("formspec", fs_init)
 	meta:set_string("infotext", "Chess Board")
 	meta:set_string("playerBlack", "")
 	meta:set_string("playerWhite", "")
@@ -229,6 +702,7 @@ function realchess.init(pos)
 
 	meta:set_string("moves", "")
 	meta:set_string("eaten", "")
+	meta:set_string("mode", "")
 
 	inv:set_list("board", pieces)
 	inv:set_size("board", 64)
@@ -483,7 +957,8 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
 				-- Moving right-down
 				-- Ensure that no piece disturbs the way
 				for i = 1, dx - 1 do
-					if inv:get_stack(from_list, xy_to_index(from_x + i, from_y + i)):get_name() ~= "" then
+					if inv:get_stack(
+						from_list, xy_to_index(from_x + i, from_y + i)):get_name() ~= "" then
 						return 0
 					end
 				end
@@ -491,7 +966,8 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
 				-- Moving right-up
 				-- Ensure that no piece disturbs the way
 				for i = 1, dx - 1 do
-					if inv:get_stack(from_list, xy_to_index(from_x + i, from_y - i)):get_name() ~= "" then
+					if inv:get_stack(
+						from_list, xy_to_index(from_x + i, from_y - i)):get_name() ~= "" then
 						return 0
 					end
 				end
@@ -501,7 +977,8 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
 				-- Moving left-down
 				-- Ensure that no piece disturbs the way
 				for i = 1, dx - 1 do
-					if inv:get_stack(from_list, xy_to_index(from_x - i, from_y + i)):get_name() ~= "" then
+					if inv:get_stack(
+						from_list, xy_to_index(from_x - i, from_y + i)):get_name() ~= "" then
 						return 0
 					end
 				end
@@ -509,7 +986,8 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
 				-- Moving left-up
 				-- ensure that no piece disturbs the way
 				for i = 1, dx - 1 do
-					if inv:get_stack(from_list, xy_to_index(from_x - i, from_y - i)):get_name() ~= "" then
+					if inv:get_stack(
+						from_list, xy_to_index(from_x - i, from_y - i)):get_name() ~= "" then
 						return 0
 					end
 				end
@@ -535,7 +1013,8 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
 				-- Goes down
 				-- Ensure that no piece disturbs the way
 				for i = 1, dx - 1 do
-					if inv:get_stack(from_list, xy_to_index(from_x, from_y + i)):get_name() ~= "" then
+					if inv:get_stack(
+						from_list, xy_to_index(from_x, from_y + i)):get_name() ~= "" then
 						return 0
 					end
 				end
@@ -543,7 +1022,8 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
 				-- Goes up
 				-- Ensure that no piece disturbs the way
 				for i = 1, dx - 1 do
-					if inv:get_stack(from_list, xy_to_index(from_x, from_y - i)):get_name() ~= "" then
+					if inv:get_stack(
+						from_list, xy_to_index(from_x, from_y - i)):get_name() ~= "" then
 						return 0
 					end
 				end
@@ -553,7 +1033,8 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
 				-- Goes right
 				-- Ensure that no piece disturbs the way
 				for i = 1, dx - 1 do
-					if inv:get_stack(from_list, xy_to_index(from_x + i, from_y)):get_name() ~= "" then
+					if inv:get_stack(
+						from_list, xy_to_index(from_x + i, from_y)):get_name() ~= "" then
 						return 0
 					end
 				end
@@ -561,7 +1042,8 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
 				-- Goes right-down
 				-- Ensure that no piece disturbs the way
 				for i = 1, dx - 1 do
-					if inv:get_stack(from_list, xy_to_index(from_x + i, from_y + i)):get_name() ~= "" then
+					if inv:get_stack(
+						from_list, xy_to_index(from_x + i, from_y + i)):get_name() ~= "" then
 						return 0
 					end
 				end
@@ -569,7 +1051,8 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
 				-- Goes right-up
 				-- Ensure that no piece disturbs the way
 				for i = 1, dx - 1 do
-					if inv:get_stack(from_list, xy_to_index(from_x + i, from_y - i)):get_name() ~= "" then
+					if inv:get_stack(
+						from_list, xy_to_index(from_x + i, from_y - i)):get_name() ~= "" then
 						return 0
 					end
 				end
@@ -579,7 +1062,8 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
 				-- Goes left
 				-- Ensure that no piece disturbs the way and destination cell does
 				for i = 1, dx - 1 do
-					if inv:get_stack(from_list, xy_to_index(from_x - i, from_y)):get_name() ~= "" then
+					if inv:get_stack(
+						from_list, xy_to_index(from_x - i, from_y)):get_name() ~= "" then
 						return 0
 					end
 				end
@@ -587,7 +1071,8 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
 				-- Goes left-down
 				-- Ensure that no piece disturbs the way
 				for i = 1, dx - 1 do
-					if inv:get_stack(from_list, xy_to_index(from_x - i, from_y + i)):get_name() ~= "" then
+					if inv:get_stack(
+						from_list, xy_to_index(from_x - i, from_y + i)):get_name() ~= "" then
 						return 0
 					end
 				end
@@ -595,7 +1080,8 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
 				-- Goes left-up
 				-- Ensure that no piece disturbs the way
 				for i = 1, dx - 1 do
-					if inv:get_stack(from_list, xy_to_index(from_x - i, from_y - i)):get_name() ~= "" then
+					if inv:get_stack(
+						from_list, xy_to_index(from_x - i, from_y - i)):get_name() ~= "" then
 						return 0
 					end
 				end
@@ -620,6 +1106,7 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
 								return 0
 							end
 						end
+
 						inv:set_stack(from_list, 57, "")
 						inv:set_stack(from_list, 59, "realchess:rook_white_1")
 						check = false
@@ -634,6 +1121,7 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
 								return 0
 							end
 						end
+
 						inv:set_stack(from_list, 62, "realchess:rook_white_2")
 						inv:set_stack(from_list, 64, "")
 						check = false
@@ -705,11 +1193,15 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
 	board[from_index] = ""
 
 	local black_king_idx, white_king_idx = locate_kings(board)
+	if not black_king_idx or not white_king_idx then
+		return 0
+	end
 	local blackAttacked = attacked("black", black_king_idx, board)
 	local whiteAttacked = attacked("white", white_king_idx, board)
 
 	if blackAttacked then
-		if thisMove == "black" and meta:get_string("blackAttacked") == "true" then
+		if thisMove == "black" then
+			--[(*)[ and meta:get_string("blackAttacked") == "true" ]] then
 			return 0
 		else
 			meta:set_string("blackAttacked", "true")
@@ -719,7 +1211,8 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
 	end
 
 	if whiteAttacked then
-		if thisMove == "white" and meta:get_string("whiteAttacked") == "true" then
+		if thisMove == "white" then
+			--[(*)[ and meta:get_string("whiteAttacked") == "true" ]] then
 			return 0
 		else
 			meta:set_string("whiteAttacked", "true")
@@ -728,47 +1221,139 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
 		meta:set_string("whiteAttacked", "")
 	end
 
-	lastMove = thisMove
+	--(*) Allow a piece to move and put its king in check. Maybe not in the chess rules though?
 
+	lastMove = thisMove
 	meta:set_string("lastMove", lastMove)
 	meta:set_int("lastMoveTime", minetest.get_gametime())
-	meta:set_string("playerWhite", playerWhite)
+
-	meta:set_string("playerBlack", playerBlack)
+	if meta:get_string("playerWhite") == "" then
+		meta:set_string("playerWhite", playerWhite)
+	elseif meta:get_string("playerBlack") == "" then
+		meta:set_string("playerBlack", playerBlack)
+	end
 
 	local pieceTo_s = pieceTo ~= "" and pieceTo:match(":(%w+_%w+)") or ""
-	get_moves_list(meta, pieceFrom, pieceTo, pieceTo_s, from_x, to_x, from_y, to_y)
+	get_moves_list(meta, pieceFrom, pieceTo, pieceTo_s, from_index, to_index)
 	get_eaten_list(meta, pieceTo, pieceTo_s)
 
 	return 1
 end
 
+local function ai_move(inv, meta)
+	local board_t = board_to_table(inv)
+	local lastMove = meta:get_string("lastMove")
+
+	if lastMove == "white" then
+		update_formspec(meta)
+		local moves = {}
+
+		for i = 1, 64 do
+			local possibleMoves = get_possible_moves(board_t, i)
+			local stack_name    = inv:get_stack("board", i):get_name()
+
+			if stack_name:find("black") then
+				moves[tostring(i)] = possibleMoves
+			end
+		end
+
+		local choice_from, choice_to = best_move(moves)
+
+		local pieceFrom = inv:get_stack("board", choice_from):get_name()
+		local pieceTo   = inv:get_stack("board", choice_to):get_name()
+		local pieceTo_s = pieceTo ~= "" and pieceTo:match(":(%w+_%w+)") or ""
+
+		local board          = board_to_table(inv)
+		local black_king_idx = locate_kings(board)
+		local blackAttacked  = attacked("black", black_king_idx, board)
+		local kingSafe       = true
+		local bestMoveSaveFrom, bestMoveSaveTo
+
+		if blackAttacked then
+			kingSafe = false
+			meta:set_string("blackAttacked", "true")
+			local save_moves = {}
+
+			for from_idx, _ in pairs(moves) do
+			for to_idx, value in pairs(_) do
+				from_idx = tonumber(from_idx)
+				local from_idx_bak, to_idx_bak = board[from_idx], board[to_idx]
+				board[to_idx]   = board[from_idx]
+				board[from_idx] = ""
+				black_king_idx  = locate_kings(board)
+
+				if black_king_idx then
+					blackAttacked = attacked("black", black_king_idx, board)
+					if not blackAttacked then
+						save_moves[from_idx] = save_moves[from_idx] or {}
+						save_moves[from_idx][to_idx] = value
+					end
+				end
+
+				board[from_idx], board[to_idx] = from_idx_bak, to_idx_bak
+			end
+			end
+
+			if next(save_moves) then
+				bestMoveSaveFrom, bestMoveSaveTo = best_move(save_moves)
+			end
+		end
+
+		minetest.after(1.0, function()
+			local lastMoveTime = meta:get_int("lastMoveTime")
+			if lastMoveTime > 0 then
+				if not kingSafe then
+					if bestMoveSaveTo then
+						inv:set_stack("board", bestMoveSaveTo, board[bestMoveSaveFrom])
+						inv:set_stack("board", bestMoveSaveFrom, "")
+						meta:set_string("blackAttacked", "")
+					else
+						return
+					end
+				else
+					if pieceFrom:find("pawn") and choice_to >= 57 and choice_to <= 64 then
+						inv:set_stack("board", choice_to, "realchess:queen_black")
+					else
+						inv:set_stack("board", choice_to, pieceFrom)
+					end
+
+					inv:set_stack("board", choice_from, "")
+				end
+
+				board = board_to_table(inv)
+				local _, white_king_idx = locate_kings(board)
+				local whiteAttacked = attacked("white", white_king_idx, board)
+
+				if whiteAttacked then
+					meta:set_string("whiteAttacked", "true")
+				end
+
+				if meta:get_string("playerBlack") == "" then
+					meta:set_string("playerBlack", "Dumb AI")
+				end
+
+				meta:set_string("lastMove", "black")
+				meta:set_int("lastMoveTime", minetest.get_gametime())
+
+				get_moves_list(meta, pieceFrom, pieceTo, pieceTo_s, choice_from, choice_to)
+				get_eaten_list(meta, pieceTo, pieceTo_s)
+
+				update_formspec(meta)
+			end
+		end)
+	else
+		update_formspec(meta)
+	end
+end
+
 function realchess.on_move(pos, from_list, from_index)
 	local meta = minetest.get_meta(pos)
 	local inv  = meta:get_inventory()
-	inv:set_stack(from_list, from_index, '')
+	inv:set_stack(from_list, from_index, "")
 
-	local black_king_attacked = meta:get_string("blackAttacked") == "true"
+	if meta:get_string("mode") == "single" then
-	local white_king_attacked = meta:get_string("whiteAttacked") == "true"
+		ai_move(inv, meta)
-
+	end
-	local playerWhite = meta:get_string("playerWhite")
-	local playerBlack = meta:get_string("playerBlack")
-
-	local moves       = meta:get_string("moves")
-	local eaten_img   = meta:get_string("eaten_img")
-	local lastMove    = meta:get_string("lastMove")
-	local turnBlack   = minetest.colorize("#000001", (lastMove == "white" and playerBlack ~= "") and
-			    playerBlack .. "..." or playerBlack)
-	local turnWhite   = minetest.colorize("#000001", (lastMove == "black" and playerWhite ~= "") and
-			    playerWhite .. "..." or playerWhite)
-	local check_s     = minetest.colorize("#FF0000", "\\[check\\]")
-
-	local formspec = fs ..
-		"label[1.9,0.3;"  .. turnBlack .. (black_king_attacked and " " .. check_s or "") .. "]" ..
-		"label[1.9,9.15;" .. turnWhite .. (white_king_attacked and " " .. check_s or "") .. "]" ..
-		"table[8.9,1.05;5.07,3.75;moves;" .. moves:sub(1,-2) .. ";1]" ..
-		eaten_img
-
-	meta:set_string("formspec", formspec)
 
 	return false
 end
@@ -794,12 +1379,18 @@ function realchess.fields(pos, _, fields, sender)
 	local lastMoveTime  = meta:get_int("lastMoveTime")
 	if fields.quit then return end
 
+	if fields.single or fields.multi then
+		meta:set_string("mode", (fields.single and "single" or "multi"))
+		update_formspec(meta)
+		return
+	end
+
 	-- Timeout is 5 min. by default for resetting the game (non-players only)
 	if fields.new then
 		if (playerWhite == playerName or playerBlack == playerName) then
 			realchess.init(pos)
 
-		elseif lastMoveTime ~= 0 then
+		elseif lastMoveTime > 0 then
 			if minetest.get_gametime() >= timeout_limit and
 					(playerWhite ~= playerName or playerBlack ~= playerName) then
 				realchess.init(pos)

src/cooking.lua

@@ -17,7 +17,9 @@ cauldron.cbox = {
 
 function cauldron.stop_sound(pos)
 	local spos = minetest.hash_node_position(pos)
-	if sounds[spos] then minetest.sound_stop(sounds[spos]) end
+	if sounds[spos] then
+		minetest.sound_stop(sounds[spos])
+	end
 end
 
 function cauldron.idle_construct(pos)
@@ -29,7 +31,10 @@ end
 function cauldron.boiling_construct(pos)
 	local spos = minetest.hash_node_position(pos)
 	sounds[spos] = minetest.sound_play("xdecor_boiling_water", {
-		pos=pos, max_hear_distance=5, gain=0.8, loop=true
+		pos = pos,
+		max_hear_distance = 5,
+		gain = 0.8,
+		loop = true
 	})
 
 	local meta = minetest.get_meta(pos)
@@ -57,23 +62,25 @@ function cauldron.filling(pos, node, clicker, itemstack)
 			else
 				itemstack:replace("bucket:bucket_water")
 			end
-			minetest.set_node(pos, {name="xdecor:cauldron_empty", param2=node.param2})
+			minetest.set_node(pos, {name = "xdecor:cauldron_empty", param2 = node.param2})
+
 		elseif wield_item:sub(-6) == "_water" and node.name:sub(-6) == "_empty" then
-			minetest.set_node(pos, {name="xdecor:cauldron_idle", param2=node.param2})
+			minetest.set_node(pos, {name = "xdecor:cauldron_idle", param2 = node.param2})
 			itemstack:replace("bucket:bucket_empty")
 		end
+
 		return itemstack
 	end
 end
 
 function cauldron.idle_timer(pos)
-	local below_node = {x=pos.x, y=pos.y-1, z=pos.z}
+	local below_node = {x = pos.x, y = pos.y - 1, z = pos.z}
 	if not minetest.get_node(below_node).name:find("fire") then
 		return true
 	end
 
 	local node = minetest.get_node(pos)
-	minetest.set_node(pos, {name="xdecor:cauldron_boiling", param2=node.param2})
+	minetest.set_node(pos, {name = "xdecor:cauldron_boiling", param2 = node.param2})
 	return true
 end
 
@@ -82,13 +89,17 @@ local function eatable(itemstring)
 	local item = itemstring:match("[%w_:]+")
 	local on_use_def = minetest.registered_items[item].on_use
 	if not on_use_def then return end
+
 	return string.format("%q", string.dump(on_use_def)):find("item_eat")
 end
 
 function cauldron.boiling_timer(pos)
 	local node = minetest.get_node(pos)
 	local objs = minetest.get_objects_inside_radius(pos, 0.5)
-	if not next(objs) then return true end
+
+	if not next(objs) then
+		return true
+	end
 
 	local ingredients = {}
 	for _, obj in pairs(objs) do
@@ -96,31 +107,38 @@ function cauldron.boiling_timer(pos)
 			local itemstring = obj:get_luaentity().itemstring
 			local food = itemstring:match(":([%w_]+)")
 
-			for _, ingredient in pairs(ingredients_list) do
+			for _, ingredient in ipairs(ingredients_list) do
 				if food and (eatable(itemstring) or food:find(ingredient)) then
-					ingredients[#ingredients+1] = food break
+					ingredients[#ingredients + 1] = food
+					break
 				end
 			end
 		end
 	end
 
 	if #ingredients >= 2 then
-		for _, obj in pairs(objs) do obj:remove() end
+		for _, obj in pairs(objs) do
-		minetest.set_node(pos, {name="xdecor:cauldron_soup", param2=node.param2})
+			obj:remove()
+		end
+
+		minetest.set_node(pos, {name = "xdecor:cauldron_soup", param2 = node.param2})
 	end
 
-	local node_under = {x=pos.x, y=pos.y-1, z=pos.z}
+	local node_under = {x = pos.x, y = pos.y - 1, z = pos.z}
+
 	if not minetest.get_node(node_under).name:find("fire") then
-		minetest.set_node(pos, {name="xdecor:cauldron_idle", param2=node.param2})
+		minetest.set_node(pos, {name = "xdecor:cauldron_idle", param2 = node.param2})
 	end
+
 	return true
 end
 
 function cauldron.take_soup(pos, node, clicker, itemstack)
 	local inv = clicker:get_inventory()
 	local wield_item = clicker:get_wielded_item()
+	local item_name = wield_item:get_name()
 
-	if wield_item:get_name() == "xdecor:bowl" then
+	if item_name == "xdecor:bowl" or item_name == "farming:bowl" then
 		if wield_item:get_count() > 1 then
 			if inv:room_for_item("main", "xdecor:bowl_soup 1") then
 				itemstack:take_item()
@@ -134,8 +152,9 @@ function cauldron.take_soup(pos, node, clicker, itemstack)
 			itemstack:replace("xdecor:bowl_soup 1")
 		end
 
-		minetest.set_node(pos, {name="xdecor:cauldron_empty", param2=node.param2})
+		minetest.set_node(pos, {name = "xdecor:cauldron_empty", param2 = node.param2})
 	end
+
 	return itemstack
 end
 
@@ -145,11 +164,11 @@ xdecor.register("cauldron_empty", {
 	on_rotate = screwdriver.rotate_simple,
 	tiles = {"xdecor_cauldron_top_empty.png", "xdecor_cauldron_sides.png"},
 	infotext = "Cauldron (empty)",
+	collision_box = xdecor.pixelbox(16, cauldron.cbox),
+	on_rightclick = cauldron.filling,
 	on_construct = function(pos)
 		cauldron.stop_sound(pos)
 	end,
-	on_rightclick = cauldron.filling,
-	collision_box = xdecor.pixelbox(16, cauldron.cbox)
 })
 
 xdecor.register("cauldron_idle", {
@@ -161,7 +180,7 @@ xdecor.register("cauldron_idle", {
 	collision_box = xdecor.pixelbox(16, cauldron.cbox),
 	on_rightclick = cauldron.filling,
 	on_construct = cauldron.idle_construct,
-	on_timer = cauldron.idle_timer
+	on_timer = cauldron.idle_timer,
 })
 
 xdecor.register("cauldron_boiling", {
@@ -170,32 +189,40 @@ xdecor.register("cauldron_boiling", {
 	drop = "xdecor:cauldron_empty",
 	infotext = "Cauldron (active) - Drop foods inside to make a soup",
 	damage_per_second = 2,
-	tiles = {{name="xdecor_cauldron_top_anim_boiling_water.png",
+	tiles = {
-			animation={type="vertical_frames", length=3.0}},
+		{
-		"xdecor_cauldron_sides.png"},
+			name = "xdecor_cauldron_top_anim_boiling_water.png",
+			animation = {type = "vertical_frames", length = 3.0}
+		},
+		"xdecor_cauldron_sides.png"
+	},
 	collision_box = xdecor.pixelbox(16, cauldron.cbox),
 	on_rightclick = cauldron.filling,
 	on_construct = cauldron.boiling_construct,
+	on_timer = cauldron.boiling_timer,
 	on_destruct = function(pos)
 		cauldron.stop_sound(pos)
 	end,
-	on_timer = cauldron.boiling_timer
 })
 
 xdecor.register("cauldron_soup", {
-	groups = {cracky=2, oddly_breakable_by_hand=1, not_in_creative_inventory=1},
+	groups = {cracky = 2, oddly_breakable_by_hand = 1, not_in_creative_inventory = 1},
 	on_rotate = screwdriver.rotate_simple,
 	drop = "xdecor:cauldron_empty",
 	infotext = "Cauldron (active) - Use a bowl to eat the soup",
 	damage_per_second = 2,
-	tiles = {{name="xdecor_cauldron_top_anim_soup.png",
+	tiles = {
-			animation={type="vertical_frames", length=3.0}},
+		{
-		"xdecor_cauldron_sides.png"},
+			name = "xdecor_cauldron_top_anim_soup.png",
+			animation = {type = "vertical_frames", length = 3.0}
+		},
+		"xdecor_cauldron_sides.png"
+	},
 	collision_box = xdecor.pixelbox(16, cauldron.cbox),
 	on_rightclick = cauldron.take_soup,
 	on_destruct = function(pos)
 		cauldron.stop_sound(pos)
-	end
+	end,
 })
 
 -- Craft items

src/enchanting.lua

@@ -1,5 +1,6 @@
 screwdriver = screwdriver or {}
 local ceil, abs, random = math.ceil, math.abs, math.random
+local reg_tools = minetest.registered_tools
 
 -- Cost in Mese crystal(s) for enchanting.
 local mese_cost = 1
@@ -11,13 +12,17 @@ local enchanting = {
 	damages  = 1,    -- Sharpness
 }
 
-local function cap(S) return S:gsub("^%l", string.upper) end
+local function cap(S) return
+	S:gsub("^%l", string.upper)
+end
+
 local function to_percent(orig_value, final_value)
 	return abs(ceil(((final_value - orig_value) / orig_value) * 100))
 end
 
 function enchanting:get_tooltip(enchant, orig_caps, fleshy)
-	local bonus = {durable=0, efficiency=0, damages=0}
+	local bonus = {durable = 0, efficiency = 0, damages = 0}
+
 	if orig_caps then
 		bonus.durable = to_percent(orig_caps.uses, orig_caps.uses * enchanting.uses)
 		local sum_caps_times = 0
@@ -28,23 +33,25 @@ function enchanting:get_tooltip(enchant, orig_caps, fleshy)
 		bonus.efficiency = to_percent(average_caps_time, average_caps_time -
 					      enchanting.times)
 	end
+
 	if fleshy then
 		bonus.damages = to_percent(fleshy, fleshy + enchanting.damages)
 	end
 
 	local specs = { -- not finished, to complete
-		durable = {"#00baff", " (+"..bonus.durable.."%)"},
+		durable = {"#00baff", " (+" .. bonus.durable .. "%)"},
-		fast    = {"#74ff49", " (+"..bonus.efficiency.."%)"},
+		fast    = {"#74ff49", " (+" .. bonus.efficiency .. "%)"},
-		sharp   = {"#ffff00", " (+"..bonus.damages.."%)"},
+		sharp   = {"#ffff00", " (+" .. bonus.damages .. "%)"},
 	}
+
 	return minetest.colorize and minetest.colorize(specs[enchant][1],
-			"\n"..cap(enchant)..specs[enchant][2]) or
+			"\n" .. cap(enchant) .. specs[enchant][2]) or
-			"\n"..cap(enchant)..specs[enchant][2]
+			"\n" .. cap(enchant) .. specs[enchant][2]
 end
 
 local enchant_buttons = {
-	[[ image_button[3.9,0.85;4,0.92;bg_btn.png;fast;Efficiency]
+	"image_button[3.9,0.85;4,0.92;bg_btn.png;fast;Efficiency]" ..
-	image_button[3.9,1.77;4,1.12;bg_btn.png;durable;Durability] ]],
+	"image_button[3.9,1.77;4,1.12;bg_btn.png;durable;Durability]",
 	"image_button[3.9,2.9;4,0.92;bg_btn.png;sharp;Sharpness]",
 }
 
@@ -63,10 +70,10 @@ function enchanting.formspec(pos, num)
 			image[2,2.9;1,1;mese_layout.png]
 			tooltip[sharp;Your weapon inflicts more damages]
 			tooltip[durable;Your tool last longer]
-			tooltip[fast;Your tool digs faster] ]]
+			tooltip[fast;Your tool digs faster] ]] ..
-			..default.gui_slots..default.get_hotbar_bg(0.5,4.5)
+			default.gui_slots .. default.get_hotbar_bg(0.5,4.5)
 
-	formspec = formspec..(enchant_buttons[num] or "")
+	formspec = formspec .. (enchant_buttons[num] or "")
 	meta:set_string("formspec", formspec)
 end
 
@@ -78,7 +85,7 @@ function enchanting.on_put(pos, listname, _, stack)
 			"sword",
 		}
 
-		for idx, tools in pairs(tool_groups) do
+		for idx, tools in ipairs(tool_groups) do
 			if tools:find(stackname:match(":(%w+)")) then
 				enchanting.formspec(pos, idx)
 			end
@@ -93,11 +100,14 @@ function enchanting.fields(pos, _, fields, sender)
 	local mese = inv:get_stack("mese", 1)
 	local orig_wear = tool:get_wear()
 	local mod, name = tool:get_name():match("(.*):(.*)")
-	local enchanted_tool = (mod or "")..":enchanted_"..(name or "").."_"..next(fields)
+	local enchanted_tool = (mod or "") .. ":enchanted_" .. (name or "") .. "_" .. next(fields)
 
-	if mese:get_count() >= mese_cost and minetest.registered_tools[enchanted_tool] then
+	if mese:get_count() >= mese_cost and reg_tools[enchanted_tool] then
 		minetest.sound_play("xdecor_enchanting", {
-			to_player=sender:get_player_name(), gain=0.8})
+			to_player = sender:get_player_name(),
+			gain = 0.8
+		})
+
 		tool:replace(enchanted_tool)
 		tool:add_wear(orig_wear)
 		mese:take_item(mese_cost)
@@ -112,11 +122,13 @@ function enchanting.dig(pos)
 end
 
 local function allowed(tool)
-	if not tool then return false end
+	if not tool then return end
-	for item in pairs(minetest.registered_tools) do
+
-		if item:find("enchanted_"..tool) then return true end
+	for item in pairs(reg_tools) do
+		if item:find("enchanted_" .. tool) then
+			return true
+		end
 	end
-	return false
 end
 
 function enchanting.put(_, listname, _, stack)
@@ -126,23 +138,26 @@ function enchanting.put(_, listname, _, stack)
 	elseif listname == "tool" and allowed(stackname:match("[^:]+$")) then
 		return 1
 	end
+
 	return 0
 end
 
 function enchanting.on_take(pos, listname)
-	if listname == "tool" then enchanting.formspec(pos, nil) end
+	if listname == "tool" then
+		enchanting.formspec(pos)
+	end
 end
 
 function enchanting.construct(pos)
 	local meta = minetest.get_meta(pos)
 	meta:set_string("infotext", "Enchantment Table")
-	enchanting.formspec(pos, nil)
+	enchanting.formspec(pos)
 
 	local inv = meta:get_inventory()
 	inv:set_size("tool", 1)
 	inv:set_size("mese", 1)
 
-	minetest.add_entity({x=pos.x, y=pos.y+0.85, z=pos.z}, "xdecor:book_open")
+	minetest.add_entity({x = pos.x, y = pos.y + 0.85, z = pos.z}, "xdecor:book_open")
 	local timer = minetest.get_node_timer(pos)
 	timer:start(0.5)
 end
@@ -160,39 +175,45 @@ end
 function enchanting.timer(pos)
 	local num = #minetest.get_objects_inside_radius(pos, 0.9)
 	if num == 0 then
-		minetest.add_entity({x=pos.x, y=pos.y+0.85, z=pos.z}, "xdecor:book_open")
+		minetest.add_entity({x = pos.x, y = pos.y + 0.85, z = pos.z}, "xdecor:book_open")
 	end
 
-	local minp = {x=pos.x-2, y=pos.y, z=pos.z-2}
+	local minp = {x = pos.x - 2, y = pos.y,     z = pos.z - 2}
-	local maxp = {x=pos.x+2, y=pos.y+1, z=pos.z+2}
+	local maxp = {x = pos.x + 2, y = pos.y + 1, z = pos.z + 2}
+
 	local bookshelves = minetest.find_nodes_in_area(minp, maxp, "default:bookshelf")
-	if #bookshelves == 0 then return true end
+	if #bookshelves == 0 then
+		return true
+	end
 
 	local bookshelf_pos = bookshelves[random(1, #bookshelves)]
 	local x = pos.x - bookshelf_pos.x
 	local y = bookshelf_pos.y - pos.y
 	local z = pos.z - bookshelf_pos.z
 
-	if tostring(x..z):find(2) then
+	if tostring(x .. z):find(2) then
 		minetest.add_particle({
 			pos = bookshelf_pos,
-			velocity = {x=x, y=2-y, z=z},
+			velocity = {x = x, y = 2 - y, z = z},
-			acceleration = {x=0, y=-2.2, z=0},
+			acceleration = {x = 0, y = -2.2, z = 0},
 			expirationtime = 1,
 			size = 1.5,
 			glow = 5,
-			texture = "xdecor_glyph"..random(1,18)..".png"
+			texture = "xdecor_glyph" .. random(1,18) .. ".png"
 		})
 	end
+
 	return true
 end
 
 xdecor.register("enchantment_table", {
 	description = "Enchantment Table",
-	tiles = {"xdecor_enchantment_top.png",  "xdecor_enchantment_bottom.png",
+	tiles = {
-		 "xdecor_enchantment_side.png", "xdecor_enchantment_side.png",
+		"xdecor_enchantment_top.png",  "xdecor_enchantment_bottom.png",
-		 "xdecor_enchantment_side.png", "xdecor_enchantment_side.png"},
+		"xdecor_enchantment_side.png", "xdecor_enchantment_side.png",
-	groups = {cracky=1, level=1},
+		"xdecor_enchantment_side.png", "xdecor_enchantment_side.png"
+	},
+	groups = {cracky = 1, level = 1},
 	light_source = 6,
 	sounds = default.node_sound_stone_defaults(),
 	on_rotate = screwdriver.rotate_simple,
@@ -204,7 +225,9 @@ xdecor.register("enchantment_table", {
 	on_metadata_inventory_put = enchanting.on_put,
 	on_metadata_inventory_take = enchanting.on_take,
 	allow_metadata_inventory_put = enchanting.put,
-	allow_metadata_inventory_move = function() return 0 end
+	allow_metadata_inventory_move = function()
+		return 0
+	end,
 })
 
 minetest.register_entity("xdecor:book_open", {
@@ -215,7 +238,7 @@ minetest.register_entity("xdecor:book_open", {
 	textures = {"xdecor_book_open.png"},
 	on_activate = function(self)
 		local pos = self.object:getpos()
-		local pos_under = {x=pos.x, y=pos.y-1, z=pos.z}
+		local pos_under = {x = pos.x, y = pos.y - 1, z = pos.z}
 
 		if minetest.get_node(pos_under).name ~= "xdecor:enchantment_table" then
 			self.object:remove()
@@ -227,7 +250,7 @@ function enchanting:register_tools(mod, def)
 	for tool in pairs(def.tools) do
 	for material in def.materials:gmatch("[%w_]+") do
 	for enchant in def.tools[tool].enchants:gmatch("[%w_]+") do
-		local original_tool = minetest.registered_tools[mod..":"..tool.."_"..material]
+		local original_tool = reg_tools[mod .. ":" .. tool .. "_" .. material]
 		if not original_tool then break end
 		local original_toolcaps = original_tool.tool_capabilities
 
@@ -251,12 +274,12 @@ function enchanting:register_tools(mod, def)
 				fleshy = fleshy + enchanting.damages
 			end
 
-			minetest.register_tool(":"..mod..":enchanted_"..tool.."_"..material.."_"..enchant, {
+			minetest.register_tool(":" .. mod .. ":enchanted_" .. tool .. "_" .. material .. "_" .. enchant, {
-				description = "Enchanted "..cap(material).." "..cap(tool)..
+				description = "Enchanted " .. cap(material) .. " " .. cap(tool) ..
 					self:get_tooltip(enchant, original_groupcaps[group], fleshy),
-				inventory_image = original_tool.inventory_image.."^[colorize:violet:50",
+				inventory_image = original_tool.inventory_image .. "^[colorize:violet:50",
 				wield_image = original_tool.wield_image,
-				groups = {not_in_creative_inventory=1},
+				groups = {not_in_creative_inventory = 1},
 				tool_capabilities = {
 					groupcaps = groupcaps, damage_groups = {fleshy = fleshy},
 					full_punch_interval = full_punch_interval,

src/hive.lua

@@ -12,8 +12,8 @@ function hive.construct(pos)
 			list[context;honey;5,0;1,1;]
 			list[current_player;main;0,1.35;8,4;]
 			listring[current_player;main]
-			listring[context;honey] ]]
+			listring[context;honey] ]] ..
-			..xbg..default.get_hotbar_bg(0,1.35)
+			xbg .. default.get_hotbar_bg(0,1.35)
 
 	meta:set_string("formspec", formspec)
 	meta:set_string("infotext", "Artificial Hive")
@@ -25,7 +25,9 @@ end
 
 function hive.timer(pos)
 	local time = (minetest.get_timeofday() or 0) * 24000
-	if time < 5500 or time > 18500 then return true end
+	if time < 5500 or time > 18500 then
+		return true
+	end
 
 	local inv = minetest.get_meta(pos):get_inventory()
 	local honeystack = inv:get_stack("honey", 1)
@@ -40,8 +42,10 @@ function hive.timer(pos)
 		inv:add_item("honey", "mobs:honey")
 	elseif honey == honey_max then
 		local timer = minetest.get_node_timer(pos)
-		timer:stop() return true
+		timer:stop()
+		return true
 	end
+
 	return true
 end
 
@@ -53,11 +57,12 @@ xdecor.register("hive", {
 	groups = {choppy=3, oddly_breakable_by_hand=2, flammable=1},
 	on_construct = hive.construct,
 	on_timer = hive.timer,
+
 	can_dig = function(pos)
 		local inv = minetest.get_meta(pos):get_inventory()
 		return inv:is_empty("honey")
 	end,
-	on_punch = function(pos, node, puncher)
+	on_punch = function(pos, player, puncher)
         if math.random(1, 4) == 1 then
             minetest.add_entity(pos, "mobs_animal:bee_angry")
         end
@@ -66,7 +71,11 @@ xdecor.register("hive", {
             minetest.add_entity(pos, "mobs_animal:bee_angry")
         end
 	end,
-	allow_metadata_inventory_put = function() return 0 end,
+
+	allow_metadata_inventory_put = function()
+		return 0
+	end,
+
 	on_metadata_inventory_take = function(pos, _, _, stack)
 		if stack:get_count() == honey_max then
 			local timer = minetest.get_node_timer(pos)
@@ -81,8 +90,13 @@ minetest.register_craftitem("xdecor:honey", {
 	description = "Honey",
 	inventory_image = "xdecor_honey.png",
 	wield_image = "xdecor_honey.png",
-	groups = {food_honey = 1, food_sugar = 1, flammable = 2, not_in_creative_inventory=1},
+	on_use = minetest.item_eat(2),
-	on_use = minetest.item_eat(2)
+	groups = {
+		food_honey = 1,
+		food_sugar = 1,
+		flammable = 2,
+		not_in_creative_inventory = 1,
+	},
 })
 
 -- Recipes

src/itemframe.lua

@@ -6,15 +6,18 @@ local function remove_item(pos, node)
 	if not objs then return end
 
 	for _, obj in pairs(objs) do
-		if obj and obj:get_luaentity() and
+		local ent = obj:get_luaentity()
-				obj:get_luaentity().name == "xdecor:f_item" then
+		if obj and ent and ent.name == "xdecor:f_item" then
 			obj:remove() break
 		end
 	end
 end
 
 local facedir = {
-	[0] = {x=0, y=0, z=1}, {x=1, y=0, z=0}, {x=0, y=0, z=-1}, {x=-1, y=0, z=0}
+	[0] = {x = 0,  y = 0, z = 1},
+	      {x = 1,  y = 0, z = 0},
+	      {x = 0,  y = 0, z = -1},
+	      {x = -1, y = 0, z = 0}
 }
 
 local function update_item(pos, node)
@@ -29,8 +32,8 @@ local function update_item(pos, node)
 	tmp.texture = ItemStack(itemstring):get_name()
 
 	local entity = minetest.add_entity(pos, "xdecor:f_item")
-	local yaw = math.pi*2 - node.param2 * math.pi/2
+	local yaw = (math.pi * 2) - node.param2 * (math.pi / 2)
-	entity:setyaw(yaw)
+	entity:set_yaw(yaw)
 
 	local timer = minetest.get_node_timer(pos)
 	timer:start(15.0)
@@ -53,7 +56,7 @@ function itemframe.after_place(pos, placer, itemstack)
 	local meta = minetest.get_meta(pos)
 	local name = placer:get_player_name()
 	meta:set_string("owner", name)
-	meta:set_string("infotext", "Item Frame (owned by "..name..")")
+	meta:set_string("infotext", "Item Frame (owned by " .. name .. ")")
 end
 
 function itemframe.timer(pos)
@@ -64,6 +67,7 @@ function itemframe.timer(pos)
 	if num == 0 and meta:get_string("item") ~= "" then
 		update_item(pos, node)
 	end
+
 	return true
 end
 
@@ -91,8 +95,9 @@ function itemframe.punch(pos, node, puncher)
 	local owner = meta:get_string("owner")
 	local admin = minetest.check_player_privs(player_name, "protection_bypass")
 
-	if not admin and player_name ~= owner then return end
+	if admin and player_name == owner then
-	drop_item(pos, node)
+		drop_item(pos, node)
+	end
 end
 
 function itemframe.dig(pos, player)
@@ -107,14 +112,16 @@ end
 
 xdecor.register("itemframe", {
 	description = "Item Frame",
-	groups = {choppy=3, oddly_breakable_by_hand=2, flammable=3},
+	groups = {choppy = 3, oddly_breakable_by_hand = 2, flammable = 3},
 	sounds = default.node_sound_wood_defaults(),
 	on_rotate = screwdriver.disallow,
 	sunlight_propagates = true,
 	inventory_image = "xdecor_itemframe.png",
 	node_box = xdecor.nodebox.slab_z(0.9375),
-	tiles = {"xdecor_wood.png", "xdecor_wood.png", "xdecor_wood.png",
+	tiles = {
-		 "xdecor_wood.png", "xdecor_wood.png", "xdecor_itemframe.png"},
+		"xdecor_wood.png", "xdecor_wood.png", "xdecor_wood.png",
+		"xdecor_wood.png", "xdecor_wood.png", "xdecor_itemframe.png"
+	},
 	after_place_node = itemframe.after_place,
 	on_timer = itemframe.timer,
 	on_rightclick = itemframe.rightclick,
@@ -125,12 +132,12 @@ xdecor.register("itemframe", {
 
 minetest.register_entity("xdecor:f_item", {
 	visual = "wielditem",
-	visual_size = {x=0.33, y=0.33},
+	visual_size = {x = 0.33, y = 0.33},
 	collisionbox = {0},
 	physical = false,
 	textures = {"air"},
 	on_activate = function(self, staticdata)
-		local pos = self.object:getpos()
+		local pos = self.object:get_pos()
 		if minetest.get_node(pos).name ~= "xdecor:itemframe" then
 			self.object:remove()
 		end
@@ -148,13 +155,16 @@ minetest.register_entity("xdecor:f_item", {
 			end
 		end
 		if self.texture then
-			self.object:set_properties({textures={self.texture}})
+			self.object:set_properties({
+				textures = {self.texture}
+			})
 		end
 	end,
 	get_staticdata = function(self)
 		if self.nodename and self.texture then
-			return self.nodename..";"..self.texture
+			return self.nodename .. ";" .. self.texture
 		end
+
 		return ""
 	end
 })

src/mailbox.lua

@@ -2,17 +2,25 @@ local mailbox = {}
 screwdriver = screwdriver or {}
 
 local function get_img(img)
+	if not img then return end
 	local img_name = img:match("(.*)%.png")
-	if img_name then return img_name..".png" end
+
+	if img_name then
+		return img_name .. ".png"
+	end
 end
 
 local function img_col(stack)
 	local def = minetest.registered_items[stack]
-	if not def then return "" end
+	if not def then
+		return ""
+	end
 
 	if def.inventory_image ~= "" then
 		local img = get_img(def.inventory_image)
-		if img then return img end
+		if img then
+			return img
+		end
 	end
 
 	if def.tiles then
@@ -22,30 +30,34 @@ local function img_col(stack)
 		elseif type(tile) == "string" then
 			img = get_img(tile)
 		end
-		if img then return img end
+
+		if img then
+			return img
+		end
 	end
 
 	return ""
 end
 
 function mailbox:formspec(pos, owner, is_owner)
-	local spos = pos.x..","..pos.y..","..pos.z
+	local spos = pos.x .. "," .. pos.y .. "," .. pos.z
 	local meta = minetest.get_meta(pos)
 	local giver, img = "", ""
 
 	if is_owner then
 		for i = 1, 7 do
-			local giving = meta:get_string("giver"..i)
+			local giving = meta:get_string("giver" .. i)
 			if giving ~= "" then
-				local stack = meta:get_string("stack"..i)
+				local stack = meta:get_string("stack" .. i)
 				local giver_name = giving:sub(1,12)
 				local stack_name = stack:match("[%w_:]+")
 				local stack_count = stack:match("%s(%d+)") or 1
 
-				giver = giver.."#FFFF00,"..giver_name..","..i..
+				giver = giver .. "#FFFF00," .. giver_name .. "," .. i ..
-					",#FFFFFF,x "..stack_count..","
+					",#FFFFFF,x " .. stack_count .. ","
-				img = img..i.."="..
+
-					img_col(stack_name).."^\\[resize:16x16,"
+				img = img .. i .. "=" ..
+					img_col(stack_name) .. "^\\[resize:16x16,"
 			end
 		end
 
@@ -55,20 +67,21 @@ function mailbox:formspec(pos, owner, is_owner)
 			box[6,0.72;3.3,3.5;#555555]
 			listring[current_player;main]
 			list[current_player;main;0.75,5.25;8,4;]
-			tableoptions[background=#00000000;highlight=#00000000;border=false] ]]..
+			tableoptions[background=#00000000;highlight=#00000000;border=false] ]] ..
-			"tablecolumns[color;text;image,"..img.."0;color;text]"..
+			"tablecolumns[color;text;image," .. img .. "0;color;text]" ..
-			"table[6,0.75;3.3,4;givers;"..giver.."]"..
+			"table[6,0.75;3.3,4;givers;" .. giver .. "]" ..
-			"list[nodemeta:"..spos..";mailbox;0,0.75;6,4;]"..
+			"list[nodemeta:" .. spos .. ";mailbox;0,0.75;6,4;]" ..
-			"listring[nodemeta:"..spos..";mailbox]"..
+			"listring[nodemeta:" .. spos .. ";mailbox]" ..
-			xbg..default.get_hotbar_bg(0.75,5.25)
+			xbg .. default.get_hotbar_bg(0.75, 5.25)
 	end
-	return [[ size[8,5]
+
-		list[current_player;main;0,1.25;8,4;] ]]..
+	return  "size[8,5]" ..
-		"label[0,0;Send your goods to\n"..
+		"list[current_player;main;0,1.25;8,4;]" ..
+		"label[0,0;Send your goods to\n" ..
 		(minetest.colorize and
-			minetest.colorize("#FFFF00", owner) or owner).."]"..
+			minetest.colorize("#FFFF00", owner) or owner) .. "]" ..
-		"list[nodemeta:"..spos..";drop;3.5,0;1,1;]"..
+		"list[nodemeta:" .. spos .. ";drop;3.5,0;1,1;]" ..
-		xbg..default.get_hotbar_bg(0,1.25)
+		xbg .. default.get_hotbar_bg(0, 1.25)
 end
 
 function mailbox.dig(pos, player)
@@ -85,10 +98,10 @@ function mailbox.after_place_node(pos, placer)
 	local player_name = placer:get_player_name()
 
 	meta:set_string("owner", player_name)
-	meta:set_string("infotext", player_name.."'s Mailbox")
+	meta:set_string("infotext", player_name .. "'s Mailbox")
 
 	local inv = meta:get_inventory()
-	inv:set_size("mailbox", 6*4)
+	inv:set_size("mailbox", 6 * 4)
 	inv:set_size("drop", 1)
 end
 
@@ -97,8 +110,9 @@ function mailbox.rightclick(pos, node, clicker, itemstack, pointed_thing)
 	local player = clicker:get_player_name()
 	local owner = meta:get_string("owner")
 
-	minetest.show_formspec(player, "xdecor:mailbox", mailbox:formspec(pos,
+	minetest.show_formspec(player, "xdecor:mailbox",
-			       owner, (player == owner)))
+		mailbox:formspec(pos, owner, (player == owner)))
+
 	return itemstack
 end
 
@@ -109,9 +123,10 @@ function mailbox.put(pos, listname, _, stack, player)
 			return -1
 		else
 			minetest.chat_send_player(player:get_player_name(),
-						  "The mailbox is full")
+				"The mailbox is full")
 		end
 	end
+
 	return 0
 end
 
@@ -124,8 +139,8 @@ function mailbox.on_put(pos, listname, _, stack, player)
 		inv:add_item("mailbox", stack)
 
 		for i = 7, 2, -1 do
-			meta:set_string("giver"..i, meta:get_string("giver"..(i-1)))
+			meta:set_string("giver" .. i, meta:get_string("giver" .. (i - 1)))
-			meta:set_string("stack"..i, meta:get_string("stack"..(i-1)))
+			meta:set_string("stack" .. i, meta:get_string("stack" .. (i - 1)))
 		end
 
 		meta:set_string("giver1", player:get_player_name())
@@ -139,6 +154,7 @@ function mailbox.allow_take(pos, listname, index, stack, player)
 	if player:get_player_name() ~= meta:get_string("owner") then
 		return 0
 	end
+
 	return stack:get_count()
 end
 
@@ -151,7 +167,7 @@ xdecor.register("mailbox", {
 	tiles = {"xdecor_mailbox_top.png", "xdecor_mailbox_bottom.png",
 		 "xdecor_mailbox_side.png", "xdecor_mailbox_side.png",
 		 "xdecor_mailbox.png", "xdecor_mailbox.png"},
-	groups = {cracky=3, oddly_breakable_by_hand=1},
+	groups = {cracky = 3, oddly_breakable_by_hand = 1},
 	on_rotate = screwdriver.rotate_simple,
 	can_dig = mailbox.dig,
 	on_rightclick = mailbox.rightclick,

src/mechanisms.lua

@@ -12,14 +12,14 @@ local function door_toggle(pos_actuator, pos_door, player)
 
 	if actuator.name:sub(-4) == "_off" then
 		minetest.set_node(pos_actuator,
-			{name=actuator.name:gsub("_off", "_on"), param2=actuator.param2})
+			{name = actuator.name:gsub("_off", "_on"), param2 = actuator.param2})
 	end
 	door:open(player)
 
 	minetest.after(2, function()
 		if minetest.get_node(pos_actuator).name:sub(-3) == "_on" then
 			minetest.set_node(pos_actuator,
-				{name=actuator.name, param2=actuator.param2})
+				{name = actuator.name, param2 = actuator.param2})
 		end
 		-- Re-get player object (or nil) because 'player' could
 		-- be an invalid object at this time (player left)
@@ -35,74 +35,78 @@ end
 function plate.timer(pos)
 	local objs = minetest.get_objects_inside_radius(pos, 0.8)
 	if not next(objs) or not doors.get then return true end
-	local minp = {x=pos.x-2, y=pos.y, z=pos.z-2}
+
-	local maxp = {x=pos.x+2, y=pos.y, z=pos.z+2}
+	local minp = {x = pos.x - 2, y = pos.y, z = pos.z - 2}
+	local maxp = {x = pos.x + 2, y = pos.y, z = pos.z + 2}
 	local doors = minetest.find_nodes_in_area(minp, maxp, "group:door")
 
 	for _, player in pairs(objs) do
 		if player:is_player() then
-			for i=1, #doors do
+			for i = 1, #doors do
 				door_toggle(pos, doors[i], player)
 			end
 			break
 		end
 	end
+
 	return true
 end
 
---function plate.register(material, desc, def)
+--[[function plate.register(material, desc, def)
---	xdecor.register("pressure_"..material.."_off", {
+	xdecor.register("pressure_" .. material .. "_off", {
---		description = desc.." Pressure Plate",
+		description = desc .. " Pressure Plate",
---		tiles = {"xdecor_pressure_"..material..".png"},
+		tiles = {"xdecor_pressure_" .. material .. ".png"},
---		drawtype = "nodebox",
+		drawtype = "nodebox",
---		node_box = xdecor.pixelbox(16, {{1, 0, 1, 14, 1, 14}}),
+		node_box = xdecor.pixelbox(16, {{1, 0, 1, 14, 1, 14}}),
---		groups = def.groups,
+		groups = def.groups,
---		sounds = def.sounds,
+		sounds = def.sounds,
---		sunlight_propagates = true,
+		sunlight_propagates = true,
---		on_rotate = screwdriver.rotate_simple,
+		on_rotate = screwdriver.rotate_simple,
---		on_construct = plate.construct,
+		on_construct = plate.construct,
---		on_timer = plate.timer
+		on_timer = plate.timer
---	})
+	})
---	xdecor.register("pressure_"..material.."_on", {
+	xdecor.register("pressure_" .. material .. "_on", {
---		tiles = {"xdecor_pressure_"..material..".png"},
+		tiles = {"xdecor_pressure_" .. material .. ".png"},
---		drawtype = "nodebox",
+		drawtype = "nodebox",
---		node_box = xdecor.pixelbox(16, {{1, 0, 1, 14, 0.4, 14}}),
+		node_box = xdecor.pixelbox(16, {{1, 0, 1, 14, 0.4, 14}}),
---		groups = def.groups,
+		groups = def.groups,
---		sounds = def.sounds,
+		sounds = def.sounds,
---		drop = "xdecor:pressure_"..material.."_off",
+		drop = "xdecor:pressure_" .. material .. "_off",
---		sunlight_propagates = true,
+		sunlight_propagates = true,
---		on_rotate = screwdriver.rotate_simple
+		on_rotate = screwdriver.rotate_simple
---	})
+	})
---end
+end
 
---plate.register("wood", "Wooden", {
+plate.register("wood", "Wooden", {
---	sounds = default.node_sound_wood_defaults(),
+	sounds = default.node_sound_wood_defaults(),
---	groups = {choppy=3, oddly_breakable_by_hand=2, flammable=2}
+	groups = {choppy = 3, oddly_breakable_by_hand = 2, flammable = 2}
---})
+})
 
---plate.register("stone", "Stone", {
+plate.register("stone", "Stone", {
---	sounds = default.node_sound_stone_defaults(),
+	sounds = default.node_sound_stone_defaults(),
---	groups = {cracky=3, oddly_breakable_by_hand=2}
+	groups = {cracky = 3, oddly_breakable_by_hand = 2}
---})
+})]]
 
 xdecor.register("lever_off", {
 	description = "Lever",
 	tiles = {"xdecor_lever_off.png"},
 	drawtype = "nodebox",
 	node_box = xdecor.pixelbox(16, {{2, 1, 15, 12, 14, 1}}),
-	groups = {cracky=3, oddly_breakable_by_hand=2},
+	groups = {cracky = 3, oddly_breakable_by_hand = 2},
 	sounds = default.node_sound_stone_defaults(),
 	sunlight_propagates = true,
 	on_rotate = screwdriver.rotate_simple,
+
 	on_rightclick = function(pos, node, clicker, itemstack)
 		if not doors.get then return itemstack end
-		local minp = {x=pos.x-2, y=pos.y-1, z=pos.z-2}
+		local minp = {x = pos.x - 2, y = pos.y - 1, z = pos.z - 2}
-		local maxp = {x=pos.x+2, y=pos.y+1, z=pos.z+2}
+		local maxp = {x = pos.x + 2, y = pos.y + 1, z = pos.z + 2}
 		local doors = minetest.find_nodes_in_area(minp, maxp, "group:door")
 
-		for i=1, #doors do
+		for i = 1, #doors do
 			door_toggle(pos, doors[i], clicker)
 		end
+
 		return itemstack
 	end
 })
@@ -111,7 +115,7 @@ xdecor.register("lever_on", {
 	tiles = {"xdecor_lever_on.png"},
 	drawtype = "nodebox",
 	node_box = xdecor.pixelbox(16, {{2, 1, 15, 12, 14, 1}}),
-	groups = {cracky=3, oddly_breakable_by_hand=2, not_in_creative_inventory=1},
+	groups = {cracky = 3, oddly_breakable_by_hand = 2, not_in_creative_inventory = 1},
 	sounds = default.node_sound_stone_defaults(),
 	sunlight_propagates = true,
 	on_rotate = screwdriver.rotate_simple,

src/nodes.lua

@@ -3,12 +3,12 @@ screwdriver = screwdriver or {}
 local function register_pane(name, desc, def)
 	xpanes.register_pane(name, {
 		description = desc,
-		tiles = {"xdecor_"..name..".png"},
+		tiles = {"xdecor_" .. name .. ".png"},
 		drawtype = "airlike",
 		paramtype = "light",
-		textures = {"xdecor_"..name..".png", "xdecor_"..name..".png", "xpanes_space.png"},
+		textures = {"xdecor_" .. name .. ".png", "xdecor_" .. name .. ".png", "xpanes_space.png"},
-		inventory_image = "xdecor_"..name..".png",
+		inventory_image = "xdecor_" .. name .. ".png",
-		wield_image = "xdecor_"..name..".png",
+		wield_image = "xdecor_" .. name .. ".png",
 		groups = def.groups,
 		sounds = def.sounds or default.node_sound_defaults(),
 		recipe = def.recipe
@@ -16,33 +16,41 @@ local function register_pane(name, desc, def)
 end
 
 register_pane("bamboo_frame", "Bamboo Frame", {
-	groups = {choppy=3, oddly_breakable_by_hand=2, pane=1, flammable=2},
+	groups = {choppy = 3, oddly_breakable_by_hand = 2, pane = 1, flammable = 2},
-	recipe = {{"default:papyrus", "default:papyrus", "default:papyrus"},
+	recipe = {
-		  {"default:papyrus", "farming:cotton",  "default:papyrus"},
+		{"default:papyrus", "default:papyrus", "default:papyrus"},
-		  {"default:papyrus", "default:papyrus", "default:papyrus"}}
+		{"default:papyrus", "farming:cotton",  "default:papyrus"},
+		{"default:papyrus", "default:papyrus", "default:papyrus"}
+	}
 })
 
 register_pane("chainlink", "Chainlink", {
-	groups = {cracky=3, oddly_breakable_by_hand=2, pane=1},
+	groups = {cracky = 3, oddly_breakable_by_hand = 2, pane = 1},
-	recipe = {{"default:steel_ingot", "", "default:steel_ingot"},
+	recipe = {
-		  {"", "default:steel_ingot", ""},
+		{"default:steel_ingot", "", "default:steel_ingot"},
-		  {"default:steel_ingot", "", "default:steel_ingot"}}
+		{"", "default:steel_ingot", ""},
+		{"default:steel_ingot", "", "default:steel_ingot"}
+	}
 })
 
 register_pane("rusty_bar", "Rusty Iron Bars", {
 	sounds = default.node_sound_stone_defaults(),
-	groups = {cracky=2, pane=1},
+	groups = {cracky = 2, pane = 1},
-	recipe = {{"", "default:dirt", ""},
+	recipe = {
-		  {"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
+		{"", "default:dirt", ""},
-		  {"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"}}
+		{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
+		{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"}
+	}
 })
 
 register_pane("wood_frame", "Wood Frame", {
 	sounds = default.node_sound_wood_defaults(),
-	groups = {choppy=2, pane=1, flammable=2},
+	groups = {choppy = 2, pane = 1, flammable = 2},
-	recipe = {{"group:wood", "group:stick", "group:wood"},
+	recipe = {
-		  {"group:stick", "group:stick", "group:stick"},
+		{"group:wood", "group:stick", "group:wood"},
-		  {"group:wood", "group:stick", "group:wood"}}
+		{"group:stick", "group:stick", "group:stick"},
+		{"group:wood", "group:stick", "group:wood"}
+	}
 })
 
 xdecor.register("baricade", {
@@ -51,7 +59,7 @@ xdecor.register("baricade", {
 	paramtype2 = "facedir",
 	inventory_image = "xdecor_baricade.png",
 	tiles = {"xdecor_baricade.png"},
-	groups = {choppy=2, oddly_breakable_by_hand=1, flammable=2},
+	groups = {choppy = 2, oddly_breakable_by_hand = 1, flammable = 2},
 	damage_per_second = 4,
 	selection_box = xdecor.nodebox.slab_y(0.3),
 	collision_box = xdecor.pixelbox(2, {{0, 0, 1, 2, 2, 0}})
@@ -61,50 +69,62 @@ xdecor.register("barrel", {
 	description = "Barrel",
 	tiles = {"xdecor_barrel_top.png", "xdecor_barrel_top.png", "xdecor_barrel_sides.png"},
 	on_place = minetest.rotate_node,
-	groups = {choppy=2, oddly_breakable_by_hand=1, flammable=2},
+	groups = {choppy = 2, oddly_breakable_by_hand = 1, flammable = 2},
 	sounds = default.node_sound_wood_defaults()
 })
 
 local function register_storage(name, desc, def)
 	xdecor.register(name, {
 		description = desc,
-		inventory = {size=def.inv_size or 24},
+		inventory = {size = def.inv_size or 24},
 		infotext = desc,
 		tiles = def.tiles,
 		node_box = def.node_box,
 		on_rotate = def.on_rotate,
 		on_place = def.on_place,
-		groups = def.groups or {choppy=2, oddly_breakable_by_hand=1, flammable=2},
+		groups = def.groups or {choppy = 2, oddly_breakable_by_hand = 1, flammable = 2},
 		sounds = default.node_sound_wood_defaults()
 	})
 end
 
 register_storage("cabinet", "Wooden Cabinet", {
 	on_rotate = screwdriver.rotate_simple,
-	tiles = {"xdecor_cabinet_sides.png", "xdecor_cabinet_sides.png",
+	tiles = {
-		 "xdecor_cabinet_sides.png", "xdecor_cabinet_sides.png",
+		"xdecor_cabinet_sides.png", "xdecor_cabinet_sides.png",
-		 "xdecor_cabinet_sides.png", "xdecor_cabinet_front.png"}
+		"xdecor_cabinet_sides.png", "xdecor_cabinet_sides.png",
+		"xdecor_cabinet_sides.png", "xdecor_cabinet_front.png"
+	}
 })
 
 register_storage("cabinet_half", "Half Wooden Cabinet", {
 	inv_size = 8,
 	node_box = xdecor.nodebox.slab_y(0.5, 0.5),
 	on_rotate = screwdriver.rotate_simple,
-	tiles = {"xdecor_cabinet_sides.png", "xdecor_cabinet_sides.png",
+	tiles = {
-		 "xdecor_half_cabinet_sides.png", "xdecor_half_cabinet_sides.png",
+		"xdecor_cabinet_sides.png", "xdecor_cabinet_sides.png",
-		 "xdecor_half_cabinet_sides.png", "xdecor_half_cabinet_front.png"}
+		"xdecor_half_cabinet_sides.png", "xdecor_half_cabinet_sides.png",
+		"xdecor_half_cabinet_sides.png", "xdecor_half_cabinet_front.png"
+	}
 })
 
-register_storage("empty_shelf", "Empty Shelf", {
+if minetest.get_modpath("moreblocks") then
-	on_rotate = screwdriver.rotate_simple,
+	minetest.register_alias("xdecor:empty_shelf", "moreblocks:empty_shelf")
-	tiles = {"default_wood.png", "default_wood.png", "default_wood.png",
+else
-		 "default_wood.png", "default_wood.png^xdecor_empty_shelf.png"}
+	register_storage("empty_shelf", "Empty Shelf", {
-})
+		on_rotate = screwdriver.rotate_simple,
+		tiles = {
+			"default_wood.png", "default_wood.png", "default_wood.png",
+			"default_wood.png", "default_wood.png^xdecor_empty_shelf.png"
+		}
+	})
+end
 
 register_storage("multishelf", "Multi Shelf", {
 	on_rotate = screwdriver.rotate_simple,
-	tiles = {"default_wood.png", "default_wood.png", "default_wood.png",
+	tiles = {
-		 "default_wood.png", "default_wood.png^xdecor_multishelf.png"},
+		"default_wood.png", "default_wood.png", "default_wood.png",
+		"default_wood.png", "default_wood.png^xdecor_multishelf.png"
+	},
 })
 
 xdecor.register("candle", {
@@ -115,13 +135,20 @@ xdecor.register("candle", {
 	wield_image = "xdecor_candle_wield.png",
 	paramtype2 = "wallmounted",
 	walkable = false,
-	groups = {dig_immediate=3, attached_node=1},
+	groups = {dig_immediate = 3, attached_node = 1},
-	tiles = {{name = "xdecor_candle_floor.png",
+	tiles = {
-			animation = {type="vertical_frames", length=1.5}},
+		{
-		{name = "xdecor_candle_floor.png",
+			name = "xdecor_candle_floor.png",
-			animation = {type="vertical_frames", length=1.5}},
+			animation = {type="vertical_frames", length = 1.5}
-		{name = "xdecor_candle_wall.png",
+		},
-			animation = {type="vertical_frames", length=1.5}}
+		{
+			name = "xdecor_candle_floor.png",
+			animation = {type="vertical_frames", length = 1.5}
+		},
+		{
+			name = "xdecor_candle_wall.png",
+			animation = {type="vertical_frames", length = 1.5}
+		}
 	},
 	selection_box = {
 		type = "wallmounted",
@@ -135,12 +162,15 @@ xdecor.register("chair", {
 	description = "Chair",
 	tiles = {"xdecor_wood.png"},
 	sounds = default.node_sound_wood_defaults(),
-	groups = {choppy=3, oddly_breakable_by_hand=2, flammable=2},
+	groups = {choppy = 3, oddly_breakable_by_hand = 2, flammable = 2},
 	on_rotate = screwdriver.rotate_simple,
 	node_box = xdecor.pixelbox(16, {
-		{3,  0, 11,   2, 16, 2}, {11, 0, 11,  2, 16, 2},
+		{3,  0, 11,   2, 16, 2},
-		{5,  9, 11.5, 6,  6, 1}, {3,  0,  3,  2,  6, 2},
+		{11, 0, 11,   2, 16, 2},
-		{11, 0,  3,   2,  6, 2}, {3,  6,  3, 10, 2, 8}
+		{5,  9, 11.5, 6,  6, 1},
+		{3,  0,  3,   2,  6, 2},
+		{11, 0,  3,   2,  6, 2},
+		{3,  6,  3,  10,  2, 8}
 	}),
 	can_dig = xdecor.sit_dig,
 	on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
@@ -163,7 +193,7 @@ xdecor.register("cobweb", {
 	liquid_range = 0,
 	walkable = false,
 	selection_box = {type = "regular"},
-	groups = {snappy=3, liquid=3, flammable=3},
+	groups = {snappy = 3, liquid = 3, flammable = 3},
 	sounds = default.node_sound_leaves_defaults()
 })
 ]]
@@ -171,51 +201,53 @@ local curtain_colors = {
 	"red",
 }
 
-for _, c in pairs(curtain_colors) do
+for _, c in ipairs(curtain_colors) do
-	xdecor.register("curtain_"..c, {
+	xdecor.register("curtain_" .. c, {
-		description = c:gsub("^%l", string.upper).." Curtain",
+		description = c:gsub("^%l", string.upper) .. " Curtain",
 		walkable = false,
 		tiles = {"wool_white.png"},
 		color = c,
-		inventory_image = "wool_white.png^[colorize:"..c..
+		inventory_image = "wool_white.png^[colorize:" .. c ..
 			":170^xdecor_curtain_open_overlay.png^[makealpha:255,126,126",
-		wield_image = "wool_white.png^[colorize:"..c..":170",
+		wield_image = "wool_white.png^[colorize:" .. c .. ":170",
 		drawtype = "signlike",
 		paramtype2 = "colorwallmounted",
-		groups = {dig_immediate=3, flammable=3},
+		groups = {dig_immediate = 3, flammable = 3},
-		selection_box = {type="wallmounted"},
+		selection_box = {type = "wallmounted"},
 		on_rightclick = function(pos, node, _, itemstack)
-			minetest.set_node(pos, {name="xdecor:curtain_open_"..c, param2=node.param2})
+			minetest.set_node(pos, {name = "xdecor:curtain_open_" .. c, param2 = node.param2})
 			return itemstack
 		end
 	})
 
-	xdecor.register("curtain_open_"..c, {
+	xdecor.register("curtain_open_" .. c, {
 		tiles = {"wool_white.png^xdecor_curtain_open_overlay.png^[makealpha:255,126,126"},
 		color = c,
 		drawtype = "signlike",
 		paramtype2 = "colorwallmounted",
 		walkable = false,
-		groups = {dig_immediate=3, flammable=3, not_in_creative_inventory=1},
+		groups = {dig_immediate = 3, flammable = 3, not_in_creative_inventory = 1},
 		selection_box = {type="wallmounted"},
-		drop = "xdecor:curtain_"..c,
+		drop = "xdecor:curtain_" .. c,
 		on_rightclick = function(pos, node, _, itemstack)
-			minetest.set_node(pos, {name="xdecor:curtain_"..c, param2=node.param2})
+			minetest.set_node(pos, {name="xdecor:curtain_" .. c, param2 = node.param2})
 			return itemstack
 		end
 	})
 
 	minetest.register_craft({
-		output = "xdecor:curtain_"..c.." 4",
+		output = "xdecor:curtain_" .. c .. " 4",
-		recipe = {{"", "wool:"..c, ""},
+		recipe = {
-			  {"", "wool:"..c, ""}}
+			{"", "wool:" .. c, ""},
+			{"", "wool:" .. c, ""}
+		}
 	})
 end
 
 xdecor.register("cushion", {
 	description = "Cushion",
 	tiles = {"xdecor_cushion.png"},
-	groups = {snappy=3, flammable=3, fall_damage_add_percent=-50},
+	groups = {snappy = 3, flammable = 3, fall_damage_add_percent = -50},
 	on_place = minetest.rotate_node,
 	node_box = xdecor.nodebox.slab_y(0.5),
 	can_dig = xdecor.sit_dig,
@@ -229,7 +261,7 @@ xdecor.register("cushion", {
 xdecor.register("cushion_block", {
 	description = "Cushion Block",
 	tiles = {"xdecor_cushion.png"},
-	groups = {snappy=3, flammable=3, fall_damage_add_percent=-75, not_in_creative_inventory=1}
+	groups = {snappy = 3, flammable = 3, fall_damage_add_percent = -75, not_in_creative_inventory = 1}
 })
 
 local function door_access(name)
@@ -240,38 +272,67 @@ local xdecor_doors = {
 	japanese = {
 		{"group:wood", "default:paper"},
 		{"default:paper", "group:wood"},
-		{"group:wood", "default:paper"} },
+		{"group:wood", "default:paper"}
+	},
 	prison = {
 		{"xpanes:bar_flat", "xpanes:bar_flat",},
 		{"xpanes:bar_flat", "xpanes:bar_flat",},
-		{"xpanes:bar_flat", "xpanes:bar_flat"} },
+		{"xpanes:bar_flat", "xpanes:bar_flat"}
+	},
 	rusty_prison = {
 		{"xpanes:rusty_bar_flat", "xpanes:rusty_bar_flat",},
 		{"xpanes:rusty_bar_flat", "xpanes:rusty_bar_flat",},
-		{"xpanes:rusty_bar_flat", "xpanes:rusty_bar_flat"} },
+		{"xpanes:rusty_bar_flat", "xpanes:rusty_bar_flat"}
+	},
 	screen = {
 		{"group:wood", "group:wood"},
 		{"xpanes:chainlink_flat", "xpanes:chainlink_flat"},
-		{"group:wood", "group:wood"} },
+		{"group:wood", "group:wood"}
+	},
 	slide = {
 		{"default:paper", "default:paper"},
 		{"default:paper", "default:paper"},
-		{"group:wood", "group:wood"} },
+		{"group:wood", "group:wood"}
+	},
 	woodglass = {
 		{"default:glass", "default:glass"},
 		{"group:wood", "group:wood"},
-		{"group:wood", "group:wood"} }
+		{"group:wood", "group:wood"}
+	},
 }
 
+local mesecons_register
+
+if minetest.global_exists("mesecon") then
+	mesecons_register = { effector = {
+		action_on = function(pos, node)
+			local door = doors.get(pos)
+			if door then
+				door:open()
+			end
+		end,
+		action_off = function(pos, node)
+			local door = doors.get(pos)
+			if door then
+				door:close()
+			end
+		end,
+		rules = mesecon.rules.pplate
+	}}
+end
+
 for name, recipe in pairs(xdecor_doors) do
 	if not doors.register then break end
-	doors.register(name.."_door", {
+	doors.register(name .. "_door", {
-		tiles = {{name = "xdecor_"..name.."_door.png", backface_culling=true}},
+		tiles = {
-		description = name:gsub("%f[%w]%l", string.upper):gsub("_", " ").." Door",
+			{name = "xdecor_" .. name .. "_door.png", backface_culling = true}
-		inventory_image = "xdecor_"..name.."_door_inv.png",
+		},
+		description = name:gsub("%f[%w]%l", string.upper):gsub("_", " ") .. " Door",
+		inventory_image = "xdecor_" .. name .. "_door_inv.png",
 		protected = door_access(name),
-		groups = {choppy=2, cracky=2, oddly_breakable_by_hand=1, door=1},
+		groups = {choppy = 2, cracky = 2, oddly_breakable_by_hand = 1, door = 1},
-		recipe = recipe
+		recipe = recipe,
+		mesecons = mesecons_register,
 	})
 end
 minetest.register_alias("xdecor:prison_rust_door", "doors:rusty_prison_door")
@@ -282,10 +343,12 @@ minetest.register_alias("xdecor:prison_rust_door_b_2", "doors:rusty_prison_door_
 
 xdecor.register("enderchest", {
 	description = "Ender Chest",
-	tiles = {"xdecor_enderchest_top.png", "xdecor_enderchest_top.png",
+	tiles = {
-		 "xdecor_enderchest_side.png", "xdecor_enderchest_side.png",
+		"xdecor_enderchest_top.png", "xdecor_enderchest_top.png",
-		 "xdecor_enderchest_side.png", "xdecor_enderchest_front.png"},
+		"xdecor_enderchest_side.png", "xdecor_enderchest_side.png",
-	groups = {cracky=1, choppy=1},
+		"xdecor_enderchest_side.png", "xdecor_enderchest_front.png"
+	},
+	groups = {cracky = 1, choppy = 1},
 	sounds = default.node_sound_stone_defaults(),
 	on_rotate = screwdriver.rotate_simple,
 	on_construct = function(pos)
@@ -295,7 +358,8 @@ xdecor.register("enderchest", {
 				list[current_player;main;0,5;8,4;]
 				listring[current_player;enderchest]
 				listring[current_player;main] ]]
-				..xbg..default.get_hotbar_bg(0,5))
+				 .. xbg .. default.get_hotbar_bg(0,5))
+
 		meta:set_string("infotext", "Ender Chest")
 	end
 })
@@ -310,7 +374,7 @@ xdecor.register("ivy", {
 	drawtype = "signlike",
 	walkable = false,
 	climbable = true,
-	groups = {snappy=3, flora=1, attached_node=1, plant=1, flammable=3},
+	groups = {snappy = 3, flora = 1, attached_node = 1, plant = 1, flammable = 3},
 	paramtype2 = "wallmounted",
 	selection_box = {type="wallmounted"},
 	tiles = {"xdecor_ivy.png"},
@@ -327,38 +391,45 @@ xdecor.register("lantern", {
 	wield_image = "xdecor_lantern_inv.png",
 	paramtype2 = "wallmounted",
 	walkable = false,
-	groups = {snappy=3, attached_node=1},
+	groups = {snappy = 3, attached_node = 1},
-	tiles = {{name="xdecor_lantern.png", animation={type="vertical_frames", length=1.5}}},
+	tiles = {
+		{
+			name = "xdecor_lantern.png",
+			animation = {type="vertical_frames", length = 1.5}
+		}
+	},
 	selection_box = xdecor.pixelbox(16, {{4, 0, 4, 8, 16, 8}})
 })
 
-for _, l in pairs({"iron", "wooden"}) do
+for _, l in ipairs({"iron", "wooden"}) do
-	xdecor.register(l.."_lightbox", {
+	xdecor.register(l .. "_lightbox", {
-		description = l:gsub("^%l", string.upper).." Light Box",
+		description = l:gsub("^%l", string.upper) .. " Light Box",
-		tiles = {"xdecor_"..l.."_lightbox.png"},
+		tiles = {"xdecor_" .. l .. "_lightbox.png"},
-		groups = {cracky=3, choppy=3, oddly_breakable_by_hand=2},
+		groups = {cracky = 3, choppy = 3, oddly_breakable_by_hand = 2},
 		light_source = 13,
 		sounds = default.node_sound_glass_defaults()
 	})
 end
 
-for _, f in pairs({"dandelion_white", "dandelion_yellow", "geranium",
+for _, f in ipairs({"dandelion_white", "dandelion_yellow", "geranium",
 		"rose", "tulip", "viola"}) do
-	xdecor.register("potted_"..f, {
+	xdecor.register("potted_" .. f, {
-		description = "Potted "..f:gsub("%f[%w]%l", string.upper):gsub("_", " "),
+		description = "Potted " .. f:gsub("%f[%w]%l", string.upper):gsub("_", " "),
 		walkable = false,
-		groups = {snappy=3, flammable=3, plant=1, flower=1},
+		groups = {snappy = 3, flammable = 3, plant = 1, flower = 1},
-		tiles = {"xdecor_"..f.."_pot.png"},
+		tiles = {"xdecor_" .. f .. "_pot.png"},
-		inventory_image = "xdecor_"..f.."_pot.png",
+		inventory_image = "xdecor_" .. f .. "_pot.png",
 		drawtype = "plantlike",
 		sounds = default.node_sound_leaves_defaults(),
 		selection_box = xdecor.nodebox.slab_y(0.3)
 	})
 
 	minetest.register_craft({
-		output = "xdecor:potted_"..f,
+		output = "xdecor:potted_" .. f,
-		recipe = {{"default:clay_brick", "flowers:"..f,
+		recipe = {
-			   "default:clay_brick"}, {"", "default:clay_brick", ""}}
+			{"default:clay_brick", "flowers:" .. f, "default:clay_brick"},
+			{"", "default:clay_brick", ""}
+		}
 	})
 end
 
@@ -376,30 +447,37 @@ xdecor.register("painting_1", {
 	wield_image = "xdecor_painting_empty.png",
 	paramtype2 = "wallmounted",
 	sunlight_propagates = true,
-	groups = {choppy=3, oddly_breakable_by_hand=2, flammable=2, attached_node=1},
+	groups = {choppy = 3, oddly_breakable_by_hand = 2, flammable = 2, attached_node = 1},
 	sounds = default.node_sound_wood_defaults(),
 	node_box = painting_box,
 	node_placement_prediction = "",
 	on_place = function(itemstack, placer, pointed_thing)
 		local num = math.random(4)
 		local leftover = minetest.item_place_node(
-			ItemStack("xdecor:painting_"..num), placer, pointed_thing)
+			ItemStack("xdecor:painting_" .. num), placer, pointed_thing)
+
 		if leftover:get_count() == 0 and
 				not minetest.setting_getbool("creative_mode") then
 			itemstack:take_item()
 		end
+
 		return itemstack
 	end
 })
 
 for i = 2, 4 do
-	xdecor.register("painting_"..i, {
+	xdecor.register("painting_" .. i, {
-		tiles = {"xdecor_painting_"..i..".png"},
+		tiles = {"xdecor_painting_" .. i .. ".png"},
 		paramtype2 = "wallmounted",
 		drop = "xdecor:painting_1",
 		sunlight_propagates = true,
-		groups = {choppy=3, oddly_breakable_by_hand=2, flammable=2,
+		groups = {
-			  attached_node=1, not_in_creative_inventory=1},
+			choppy = 3,
+			oddly_breakable_by_hand = 2,
+			flammable = 2,
+			attached_node = 1,
+			not_in_creative_inventory = 1
+		},
 		sounds = default.node_sound_wood_defaults(),
 		node_box = painting_box
 	})
@@ -408,7 +486,7 @@ end
 xdecor.register("stonepath", {
 	description = "Garden Stone Path",
 	tiles = {"default_stone.png"},
-	groups = {snappy=3},
+	groups = {snappy = 3},
 	on_rotate = screwdriver.rotate_simple,
 	sounds = default.node_sound_stone_defaults(),
 	sunlight_propagates = true,
@@ -423,8 +501,8 @@ local function register_hard_node(name, desc, def)
 	def = def or {}
 	xdecor.register(name, {
 		description = desc,
-		tiles = {"xdecor_"..name..".png"},
+		tiles = {"xdecor_" .. name .. ".png"},
-		groups = def.groups or {cracky=1},
+		groups = def.groups or {cracky = 1},
 		sounds = def.sounds or default.node_sound_stone_defaults()
 	})
 end
@@ -436,19 +514,21 @@ register_hard_node("hard_clay", "Hardened Clay")
 register_hard_node("moonbrick", "Moon Brick")
 register_hard_node("stone_tile", "Stone Tile")
 register_hard_node("stone_rune", "Runestone")
+
 register_hard_node("packed_ice", "Packed Ice", {
-	groups = {cracky=1, puts_out_fire=1, slippery=3},
+	groups = {cracky = 1, puts_out_fire = 1, slippery = 3},
 	sounds = default.node_sound_glass_defaults()
 })
+
 register_hard_node("wood_tile", "Wooden Tile", {
-	groups = {choppy=1, wood=1, flammable=2},
+	groups = {choppy = 1, wood = 1, flammable = 2},
 	sounds = default.node_sound_wood_defaults()
 })
 
 xdecor.register("table", {
 	description = "Table",
 	tiles = {"xdecor_wood.png"},
-	groups = {choppy=2, oddly_breakable_by_hand=1, flammable=2},
+	groups = {choppy = 2, oddly_breakable_by_hand = 1, flammable = 2},
 	sounds = default.node_sound_wood_defaults(),
 	node_box = xdecor.pixelbox(16, {
 		{0, 14, 0, 16, 2, 16}, {5.5, 0, 5.5, 5, 14, 6}
@@ -459,7 +539,7 @@ xdecor.register("tatami", {
 	description = "Tatami",
 	tiles = {"xdecor_tatami.png"},
 	wield_image = "xdecor_tatami.png",
-	groups = {snappy=3, flammable=3},
+	groups = {snappy = 3, flammable = 3},
 	sunlight_propagates = true,
 	node_box = xdecor.nodebox.slab_y(0.0625)
 })
@@ -467,22 +547,31 @@ xdecor.register("tatami", {
 xdecor.register("trampoline", {
 	description = "Trampoline",
 	tiles = {"xdecor_trampoline.png", "mailbox_blank16.png", "xdecor_trampoline_sides.png"},
-	groups = {cracky=3, oddly_breakable_by_hand=1, fall_damage_add_percent=-80, bouncy=90},
+	groups = {cracky = 3, oddly_breakable_by_hand = 1, fall_damage_add_percent = -80, bouncy = 90},
 	node_box = xdecor.nodebox.slab_y(0.5),
-	sounds = {footstep = {name="xdecor_bouncy", gain=0.8}}
+	sounds = {
+		footstep = {
+			name = "xdecor_bouncy",
+			gain = 0.8
+		}
+	}
 })
 
 xdecor.register("tv", {
 	description = "Television",
 	light_source = 11,
-	groups = {cracky=3, oddly_breakable_by_hand=2},
+	groups = {cracky = 3, oddly_breakable_by_hand = 2},
 	on_rotate = screwdriver.rotate_simple,
-	tiles = {"xdecor_television_left.png^[transformR270",
+	tiles = {
-		 "xdecor_television_left.png^[transformR90",
+		"xdecor_television_left.png^[transformR270",
-		 "xdecor_television_left.png^[transformFX",
+		"xdecor_television_left.png^[transformR90",
-		 "xdecor_television_left.png", "xdecor_television_back.png",
+		"xdecor_television_left.png^[transformFX",
-		{name="xdecor_television_front_animated.png",
+		"xdecor_television_left.png", "xdecor_television_back.png",
-		 animation = {type="vertical_frames", length=80.0}} }
+		{
+			name = "xdecor_television_front_animated.png",
+			animation = {type = "vertical_frames", length = 80.0}
+		}
+	}
 })
 
 xdecor.register("woodframed_glass", {
@@ -490,6 +579,6 @@ xdecor.register("woodframed_glass", {
 	drawtype = "glasslike_framed",
 	sunlight_propagates = true,
 	tiles = {"xdecor_woodframed_glass.png", "xdecor_woodframed_glass_detail.png"},
-	groups = {cracky=2, oddly_breakable_by_hand=1},
+	groups = {cracky = 2, oddly_breakable_by_hand = 1},
 	sounds = default.node_sound_glass_defaults()
 })

src/recipes.lua

@@ -95,14 +95,16 @@ minetest.register_craft({
 	}
 })
 
-minetest.register_craft({
+if not minetest.get_modpath("moreblocks") then
-	output = "xdecor:empty_shelf",
+	minetest.register_craft({
-	recipe = {
+		output = "xdecor:empty_shelf",
-		{"group:wood", "group:wood", "group:wood"},
+		recipe = {
-		{"", "", ""},
+			{"group:wood", "group:wood", "group:wood"},
-		{"group:wood", "group:wood", "group:wood"}
+			{"", "", ""},
-	}
+			{"group:wood", "group:wood", "group:wood"}
-})
+		}
+	})
+end
 
 minetest.register_craft({
 	output = "xdecor:enderchest",
@@ -201,7 +203,7 @@ minetest.register_craft({
 minetest.register_craft({
 	output = "xdecor:painting_1",
 	recipe = {
-		{"default:sign_wall_wood", "dye:blue"}
+		{"default:sign_wall_wood", "group:dye"}
 	}
 })
 

src/rope.lua

@@ -6,6 +6,7 @@ function rope.place(itemstack, placer, pointed_thing)
 		local pos = pointed_thing.above
 		local oldnode = minetest.get_node(pos)
 		local stackname = itemstack:get_name()
+
 		if minetest.is_protected(pos, placer:get_player_name()) then
 			return itemstack
 		end
@@ -18,12 +19,13 @@ function rope.place(itemstack, placer, pointed_thing)
 			oldnode = minetest.get_node(pos)
 		end
 	end
+
 	return itemstack
 end
 
 function rope.remove(pos, oldnode, digger, rope_name)
 	local num = 0
-	local below = {x=pos.x, y=pos.y, z=pos.z}
+	local below = {x = pos.x, y = pos.y, z = pos.z}
 	local digger_inv = digger:get_inventory()
 
 	while minetest.get_node(below).name == rope_name do
@@ -31,8 +33,10 @@ function rope.remove(pos, oldnode, digger, rope_name)
 		below.y = below.y - 1
 		num = num + 1
 	end
+
 	if num == 0 then return end
 	digger_inv:add_item("main", rope_name.." "..num)
+
 	return true
 end
 
@@ -41,14 +45,16 @@ xdecor.register("rope", {
 	drawtype = "plantlike",
 	walkable = false,
 	climbable = true,
-	groups = {snappy=3, flammable=3},
+	groups = {snappy = 3, flammable = 3},
 	tiles = {"xdecor_rope.png"},
 	inventory_image = "xdecor_rope_inv.png",
 	wield_image = "xdecor_rope_inv.png",
 	selection_box = xdecor.pixelbox(8, {{3, 0, 3, 2, 8, 2}}),
 	on_place = rope.place,
+
 	on_punch = function(pos, node, puncher, pointed_thing)
 		local player_name = puncher:get_player_name()
+
 		if not minetest.is_protected(pos, player_name) or
 			minetest.get_player_privs(player_name).protection_bypass then
 			rope.remove(pos, node, puncher, "xdecor:rope")
@@ -65,4 +71,4 @@ minetest.register_craft({
 		{"farming:string"},
 		{"farming:string"}
 	}
-})
+})

src/workbench.lua

@@ -9,7 +9,7 @@ local registered_nodes = minetest.registered_nodes
 local nodes = {}
 for node, def in pairs(registered_nodes) do
 	if xdecor.stairs_valid_def(def) then
-		nodes[#nodes+1] = node
+		nodes[#nodes + 1] = node
 	end
 end
 
@@ -20,102 +20,117 @@ WB.custom_nodes_register = {
 
 setmetatable(nodes, {
 	__concat = function(t1, t2)
-		for i=1, #t2 do
+		for i = 1, #t2 do
-			t1[#t1+1] = t2[i]
+			t1[#t1 + 1] = t2[i]
 		end
+
 		return t1
 	end
 })
 
-nodes = nodes..WB.custom_nodes_register
+nodes = nodes .. WB.custom_nodes_register
 
 -- Nodeboxes definitions
 workbench.defs = {
-	-- Name       Yield   X  Y   Z  W   H  L
+	-- Name YieldX  YZ  WH  L
 	{"nanoslab",	16, { 0, 0,  0, 8,  1, 8  }},
 	{"micropanel",	16, { 0, 0,  0, 16, 1, 8  }},
 	{"microslab",	8,  { 0, 0,  0, 16, 1, 16 }},
 	{"thinstair",	8,  { 0, 7,  0, 16, 1, 8  },
-			    { 0, 15, 8, 16, 1, 8  }},
+			 { 0, 15, 8, 16, 1, 8  }},
 	{"cube", 	4,  { 0, 0,  0, 8,  8, 8  }},
 	{"panel",	4,  { 0, 0,  0, 16, 8, 8  }},
 	{"slab", 	2,  nil			  },
 	{"doublepanel", 2,  { 0, 0,  0, 16, 8, 8  },
-			    { 0, 8,  8, 16, 8, 8  }},
+			 { 0, 8,  8, 16, 8, 8  }},
 	{"halfstair",	2,  { 0, 0,  0, 8,  8, 16 },
-			    { 0, 8,  8, 8,  8, 8  }},
+			 { 0, 8,  8, 8,  8, 8  }},
-	{"outerstair",	1,  { 0, 0,  0, 16, 8, 16 },
+	{"stair_outer",	1,  nil			  },
-			    { 0, 8,  8, 8,  8, 8  }},
 	{"stair",	1,  nil			  },
-	{"innerstair",	1,  { 0, 0,  0, 16, 8, 16 },
+	{"stair_inner",	1,  nil			  }
-			    { 0, 8,  8, 16, 8, 8  },
-			    { 0, 8,  0, 8,  8, 8  }}
 }
 
+local repairable_tools = {"pick", "axe", "shovel", "sword", "hoe", "armor", "shield"}
+
 -- Tools allowed to be repaired
 function workbench:repairable(stack)
-	local tools = {"pick", "axe", "shovel", "sword", "hoe", "armor", "shield"}
+	for _, t in ipairs(repairable_tools) do
-	for _, t in pairs(tools) do
+		if stack:find(t) then
-		if stack:find(t) then return true end
+			return true
+		end
 	end
-	return false
 end
 
 function workbench:get_output(inv, input, name)
 	local output = {}
-	for i=1, #self.defs do
+	for i = 1, #self.defs do
 		local nbox = self.defs[i]
 		local count = min(nbox[2] * input:get_count(), input:get_stack_max())
-		local item = name.."_"..nbox[1]
+		local item = name .. "_" .. nbox[1]
-		item = nbox[3] and item or "stairs:"..nbox[1].."_"..name:match(":(.*)")
+
-		output[#output+1] = item.." "..count
+		item = nbox[3] and item or "stairs:" .. nbox[1] .. "_" .. name:match(":(.*)")
+		output[#output + 1] = item .. " " .. count
 	end
 
 	inv:set_list("forms", output)
 end
 
+local main_fs = [[
+	label[0.9,1.23;Cut]
+	label[0.9,2.23;Repair]
+	box[-0.05,1;2.05,0.9;#555555]
+	box[-0.05,2;2.05,0.9;#555555]
+	button[0,0;2,1;craft;Crafting]
+	button[2,0;2,1;storage;Storage]
+	image[3,1;1,1;gui_furnace_arrow_bg.png^[transformR270]
+	image[0,1;1,1;worktable_saw.png]
+	image[0,2;1,1;worktable_anvil.png]
+	image[3,2;1,1;hammer_layout.png]
+	list[context;input;2,1;1,1;]
+	list[context;tool;2,2;1,1;]
+	list[context;hammer;3,2;1,1;]
+	list[context;forms;4,0;4,3;]
+	listring[current_player;main]
+	listring[context;tool]
+	listring[current_player;main]
+	listring[context;hammer]
+	listring[current_player;main]
+	listring[context;forms]
+	listring[current_player;main]
+	listring[context;input]
+]]
+
+local crafting_fs = [[
+	image[5,1;1,1;gui_furnace_arrow_bg.png^[transformR270]
+	button[0,0;1.5,1;back;< Back]
+	list[current_player;craft;2,0;3,3;]
+	list[current_player;craftpreview;6,1;1,1;]
+	listring[current_player;main]
+	listring[current_player;craft]
+]]
+
+local storage_fs = [[
+	list[context;storage;0,1;8,2;]
+	button[0,0;1.5,1;back;< Back]
+	listring[context;storage]
+	listring[current_player;main]
+]]
+
 local formspecs = {
 	-- Main formspec
-	[[ label[0.9,1.23;Cut]
+	main_fs,
-	   label[0.9,2.23;Repair]
+
-	   box[-0.05,1;2.05,0.9;#555555]
-	   box[-0.05,2;2.05,0.9;#555555]
-	   button[0,0;2,1;craft;Crafting]
-	   button[2,0;2,1;storage;Storage]
-	   image[3,1;1,1;gui_furnace_arrow_bg.png^[transformR270]
-	   image[0,1;1,1;worktable_saw.png]
-	   image[0,2;1,1;worktable_anvil.png]
-	   image[3,2;1,1;hammer_layout.png]
-	   list[context;input;2,1;1,1;]
-	   list[context;tool;2,2;1,1;]
-	   list[context;hammer;3,2;1,1;]
-	   list[context;forms;4,0;4,3;]
-	   listring[current_player;main]
-	   listring[context;tool]
-	   listring[current_player;main]
-	   listring[context;hammer]
-	   listring[current_player;main]
-	   listring[context;forms]
-	   listring[current_player;main]
-	   listring[context;input] ]],
 	-- Crafting formspec
-	[[ image[5,1;1,1;gui_furnace_arrow_bg.png^[transformR270]
+	crafting_fs,
-	   button[0,0;1.5,1;back;< Back]
+
-	   list[current_player;craft;2,0;3,3;]
-	   list[current_player;craftpreview;6,1;1,1;]
-	   listring[current_player;main]
-	   listring[current_player;craft] ]],
 	-- Storage formspec
-	[[ list[context;storage;0,1;8,2;]
+	storage_fs,
-	   button[0,0;1.5,1;back;< Back]
-	   listring[context;storage]
-	   listring[current_player;main] ]]
 }
 
 function workbench:set_formspec(meta, id)
 	meta:set_string("formspec",
-			"size[8,7;]list[current_player;main;0,3.25;8,4;]"..
+		"size[8,7;]list[current_player;main;0,3.25;8,4;]" ..
-			formspecs[id]..xbg..default.get_hotbar_bg(0,3.25))
+		formspecs[id] .. xbg .. default.get_hotbar_bg(0,3.25))
 end
 
 function workbench.construct(pos)
@@ -134,11 +149,11 @@ end
 
 function workbench.fields(pos, _, fields)
 	if fields.quit then return end
+
 	local meta = minetest.get_meta(pos)
-	local id = fields.back and 1 or
+	local id = fields.back and 1 or fields.craft and 2 or fields.storage and 3
-		   fields.craft and 2 or
-		   fields.storage and 3
 	if not id then return end
+
 	workbench:set_formspec(meta, id)
 end
 
@@ -159,24 +174,26 @@ function workbench.timer(pos)
 		return
 	end
 
-	-- Tool's wearing range: 0-65535 | 0 = new condition
+	-- Tool's wearing range: 0-65535; 0 = new condition
 	tool:add_wear(-500)
 	hammer:add_wear(700)
 
 	inv:set_stack("tool", 1, tool)
 	inv:set_stack("hammer", 1, hammer)
+
 	return true
 end
 
 function workbench.put(_, listname, _, stack)
 	local stackname = stack:get_name()
 	if (listname == "tool" and stack:get_wear() > 0 and
-	    workbench:repairable(stackname)) or
+		workbench:repairable(stackname)) or
-	   (listname == "input" and registered_nodes[stackname.."_cube"]) or
+	   (listname == "input" and registered_nodes[stackname .. "_cube"]) or
 	   (listname == "hammer" and stackname == "cottages:hammer") or
 	    listname == "storage" then
 		return stack:get_count()
 	end
+
 	return 0
 end
 
@@ -202,7 +219,7 @@ function workbench.on_take(pos, listname, index, stack, player)
 	local stackname = stack:get_name()
 
 	if listname == "input" then
-		if stackname == inputname and registered_nodes[inputname.."_cube"] then
+		if stackname == inputname and registered_nodes[inputname .. "_cube"] then
 			workbench:get_output(inv, input, stackname)
 		else
 			inv:set_list("forms", {})
@@ -224,11 +241,13 @@ end
 
 xdecor.register("workbench", {
 	description = "Work Bench",
-	groups = {cracky=2, choppy=2, oddly_breakable_by_hand=1},
+	groups = {cracky = 2, choppy = 2, oddly_breakable_by_hand = 1},
 	sounds = default.node_sound_wood_defaults(),
-	tiles = {"xdecor_workbench_top.png",   "xdecor_workbench_top.png",
+	tiles = {
-		 "xdecor_workbench_sides.png", "xdecor_workbench_sides.png",
+		"xdecor_workbench_top.png","xdecor_workbench_top.png",
-		 "xdecor_workbench_front.png", "xdecor_workbench_front.png"},
+		"xdecor_workbench_sides.png", "xdecor_workbench_sides.png",
+		"xdecor_workbench_front.png", "xdecor_workbench_front.png"
+	},
 	on_rotate = screwdriver.rotate_simple,
 	can_dig = workbench.dig,
 	on_timer = workbench.timer,
@@ -240,12 +259,13 @@ xdecor.register("workbench", {
 	allow_metadata_inventory_move = workbench.move
 })
 
-for _, d in pairs(workbench.defs) do
+for _, d in ipairs(workbench.defs) do
-for i=1, #nodes do
+for i = 1, #nodes do
 	local node = nodes[i]
+	local mod_name, item_name = node:match("^(.-):(.*)")
 	local def = registered_nodes[node]
 
-	if d[3] then
+	if item_name and d[3] then
 		local groups = {}
 		local tiles
 		groups.not_in_creative_inventory = 1
@@ -266,14 +286,14 @@ for i=1, #nodes do
 			tiles = {def.tile_images[1]}
 		end
 
-		if not registered_nodes["stairs:slab_"..node:match(":(.*)")] then
+		if not registered_nodes["stairs:slab_" .. item_name] then
-			stairs.register_stair_and_slab(node:match(":(.*)"), node,
+			stairs.register_stair_and_slab(item_name, node,
-				groups, tiles, def.description.." Stair",
+				groups, tiles, def.description .. " Stair",
-				def.description.." Slab", def.sounds)
+				def.description .. " Slab", def.sounds)
 		end
 
-		minetest.register_node(":"..node.."_"..d[1], {
+		minetest.register_node(":" .. node .. "_" .. d[1], {
-			description = def.description.." "..d[1]:gsub("^%l", string.upper),
+			description = def.description .. " " .. d[1]:gsub("^%l", string.upper),
 			paramtype = "light",
 			paramtype2 = "facedir",
 			drawtype = "nodebox",
@@ -285,6 +305,16 @@ for i=1, #nodes do
 			sunlight_propagates = true,
 			on_place = minetest.rotate_node
 		})
+
+	elseif item_name and mod_name then
+		minetest.register_alias_force(
+			("%s:%s_innerstair"):format(mod_name, item_name),
+			("stairs:stair_inner_%s"):format(item_name)
+		)
+		minetest.register_alias_force(
+			("%s:%s_outerstair"):format(mod_name, item_name),
+			("stairs:stair_outer_%s"):format(item_name)
+		)
 	end
 end
 end
@@ -295,7 +325,9 @@ minetest.register_tool("xdecor:hammer", {
 	description = "Hammer",
 	inventory_image = "xdecor_hammer.png",
 	wield_image = "xdecor_hammer.png",
-	on_use = function() do return end end
+	on_use = function() do
+		return end
+	end
 })
 
 -- Recipes