Merge pull request 'Formspec Refactoring' (#2635) from AFCMS/MineClone2:formspec-v4 into master

Reviewed-on: https://git.minetest.land/MineClone2/MineClone2/pulls/2635
Reviewed-by: 𝕵𝖔𝖍𝖆𝖓𝖓𝖊𝖘 𝕱𝖗𝖎𝖙𝖟 <mrrar@noreply.git.minetest.land>
Reviewed-by: ancientmarinerdev <ancientmariner_dev@proton.me>

.luacheckrc

@@ -1,10 +1,12 @@
+---@diagnostic disable
+
 unused_args = false
 allow_defined_top = true
 max_line_length = false
 redefined = false
 
 globals = {
-    "minetest", "core",
+	"minetest", "core",
 }
 
 read_globals = {
@@ -40,16 +42,16 @@ read_globals = {
 			"factorial"
 		}
 	},
-    ------
-    --MODS
-    ------
+	------
+	--MODS
+	------
 
-    --GENERAL
-    "default",
+	--GENERAL
+	"default",
 
-    --ENTITIES
-    "cmi",
+	--ENTITIES
+	"cmi",
 
-    --HUD
-    "sfinv", "sfinv_buttons", "unified_inventory", "cmsg", "inventory_plus",
-}
+	--HUD
+	"sfinv", "sfinv_buttons", "unified_inventory", "cmsg", "inventory_plus",
+}

.luarc.json

@@ -0,0 +1,22 @@
+{
+  "runtime.version": "LuaJIT",
+  "diagnostics": { "disable": ["lowercase-global"] },
+  "diagnostics.globals": [
+    "minetest",
+    "dump",
+    "dump2",
+    "Raycast",
+    "Settings",
+    "PseudoRandom",
+    "PerlinNoise",
+    "VoxelManip",
+    "SecureRandom",
+    "VoxelArea",
+    "PerlinNoiseMap",
+    "PcgRandom",
+    "ItemStack",
+    "AreaStore",
+    "vector"
+  ],
+  "workspace.ignoreDir": [".luacheckrc"]
+}

mods/HUD/mcl_experience/init.lua

@@ -147,13 +147,13 @@ function mcl_experience.throw_xp(pos, total_xp)
 
 		obj:set_velocity(vector.new(
 			math.random(-2, 2) * math.random(),
-			math.random( 2, 5),
+			math.random(2, 5),
 			math.random(-2, 2) * math.random()
 		))
 
 		i = i + xp
 		j = j + 1
-		table.insert(obs,obj)
+		table.insert(obs, obj)
 	end
 	return obs
 end
@@ -179,18 +179,18 @@ function mcl_experience.setup_hud(player)
 	if not minetest.is_creative_enabled(player:get_player_name()) then
 		hud_bars[player] = player:hud_add({
 			hud_elem_type = "image",
-			position = {x = 0.5, y = 1},
-			offset = {x = (-9 * 28) - 3, y = -(48 + 24 + 16 - 5)},
-			scale = {x = 0.35, y = 0.375},
-			alignment = {x = 1, y = 1},
+			position = { x = 0.5, y = 1 },
+			offset = { x = (-9 * 28) - 3, y = -(48 + 24 + 16 - 5) },
+			scale = { x = 0.35, y = 0.375 },
+			alignment = { x = 1, y = 1 },
 			z_index = 11,
 		})
 
 		hud_levels[player] = player:hud_add({
 			hud_elem_type = "text",
-			position = {x = 0.5, y = 1},
+			position = { x = 0.5, y = 1 },
 			number = 0x80FF20,
-			offset = {x = 0, y = -(48 + 24 + 24)},
+			offset = { x = 0, y = -(48 + 24 + 24) },
 			z_index = 12,
 		})
 	end
@@ -221,7 +221,7 @@ function mcl_experience.update(player)
 end
 
 function mcl_experience.register_on_add_xp(func, priority)
-	table.insert(mcl_experience.on_add_xp, {func = func, priority = priority or 0})
+	table.insert(mcl_experience.on_add_xp, { func = func, priority = priority or 0 })
 end
 
 -- callbacks
@@ -232,9 +232,9 @@ minetest.register_on_joinplayer(function(player)
 end)
 
 minetest.register_on_leaveplayer(function(player)
-    hud_bars[player] = nil
-    hud_levels[player] = nil
-    caches[player] = nil
+	hud_bars[player] = nil
+	hud_levels[player] = nil
+	caches[player] = nil
 end)
 
 minetest.register_on_dieplayer(function(player)
@@ -247,3 +247,12 @@ end)
 minetest.register_on_mods_loaded(function()
 	table.sort(mcl_experience.on_add_xp, function(a, b) return a.priority < b.priority end)
 end)
+
+mcl_gamemode.register_on_gamemode_change(function(player, old_gamemode, new_gamemode)
+	if new_gamemode == "survival" then
+		mcl_experience.setup_hud(player)
+		mcl_experience.update(player)
+	elseif new_gamemode == "creative" then
+		mcl_experience.remove_hud(player)
+	end
+end)

mods/HUD/mcl_experience/mod.conf

@@ -1,3 +1,4 @@
 name = mcl_experience
 author = oilboi
 description = eXPerience mod 
+depends = mcl_gamemode

mods/HUD/mcl_formspec/API.md

@@ -0,0 +1,40 @@
+# MineClone2 Formspec API
+
+## `mcl_formspec.label_color`
+
+Contains the color used for formspec labels, currently `#313131`.
+
+## `mcl_formspec.get_itemslot_bg(x, y, w, h)`
+
+Get the background of inventory slots (formspec version = 1)
+
+ex:
+
+```lua
+local formspec = table.concat({
+	mcl_formspec.get_itemslot_bg(0, 0, 5, 2),
+	"list[current_player;super_inventory;0,0;5,2;]",
+})
+```
+
+## `mcl_formspec.get_itemslot_bg_v4(x, y, w, h, size, texture)`
+
+Get the background of inventory slots (formspec version > 1)
+
+Works basically the same as `mcl_formspec.get_itemslot_bg(x, y, w, h)` but have more customisation options:
+
+- `size`: allow you to customize the size of the slot borders, default is 0.05
+- `texture`: allow you to specify a custom texture tu use instead of the default one
+
+ex:
+
+```lua
+local formspec = table.concat({
+	mcl_formspec.get_itemslot_bg_v4(0.375, 0.375, 5, 2, 0.1, "super_slot_background.png"),
+	"list[current_player;super_inventory;0.375,0.375;5,2;]",
+})
+```
+
+## `mcl_formspec.itemslot_border_size`
+
+Contains the default item slot border size used by `mcl_formspec.get_itemslot_bg_v4`, currently 0.05

mods/HUD/mcl_formspec/FORMSPEC_GUIDE.md

@@ -0,0 +1,21 @@
+# MineClone2 Formspec Guide
+
+**_This guide will teach you the rules for creating formspecs for the MineClone2 game._**
+
+Formspecs are an important part of game and mod development.
+
+First of all, MineClone2 aims to support ONLY last formspec version. Many utility functions will not work with formspec v1 or v2.
+
+The typical width of an 9 slots width inventory formspec is `0.375 + 9 + ((9-1) * 0.25) + 0.375 = 11.75`
+
+Margins are 0.375.
+
+The labels color is `mcl_formspec.label_color`
+
+Space between 1st inventory line and the rest of inventory is 0.45
+
+Labels should have 0.375 space above if there is no other stuff above and 0.45 between content
+
+- 0.375 under
+
+According to minetest modding book, table.concat is faster than string concatenation, so this method should be prefered (the code is also more clear)

mods/HUD/mcl_formspec/init.lua

@@ -1,10 +1,55 @@
 mcl_formspec = {}
 
+mcl_formspec.label_color = "#313131"
+
+---Get the background of inventory slots (formspec version = 1)
+---@param x number
+---@param y number
+---@param w number
+---@param h number
+---@return string
 function mcl_formspec.get_itemslot_bg(x, y, w, h)
 	local out = ""
 	for i = 0, w - 1, 1 do
 		for j = 0, h - 1, 1 do
-			out = out .."image["..x+i..","..y+j..";1,1;mcl_formspec_itemslot.png]"
+			out = out .. "image[" .. x + i .. "," .. y + j .. ";1,1;mcl_formspec_itemslot.png]"
+		end
+	end
+	return out
+end
+
+---This function will replace mcl_formspec.get_itemslot_bg then every formspec will be upgrade to version 4
+---@param x number
+---@param y number
+---@param size number
+---@param texture? string
+---@return string
+---@nodiscard
+local function get_slot(x, y, size, texture)
+	local t = "image[" .. x - size .. "," .. y - size .. ";" .. 1 + (size * 2) ..
+		"," .. 1 + (size * 2) .. ";" .. (texture and texture or "mcl_formspec_itemslot.png") .. "]"
+	return t
+end
+
+mcl_formspec.itemslot_border_size = 0.05
+
+---Get the background of inventory slots (formspec version > 1)
+---@param x number
+---@param y number
+---@param w integer
+---@param h integer
+---@param size? number Optional size of the slot border (default: 0.05)
+---@param texture? string Optional texture to replace the default one
+---@return string
+---@nodiscard
+function mcl_formspec.get_itemslot_bg_v4(x, y, w, h, size, texture)
+	if not size then
+		size = mcl_formspec.itemslot_border_size
+	end
+	local out = ""
+	for i = 0, w - 1, 1 do
+		for j = 0, h - 1, 1 do
+			out = out .. get_slot(x + i + (i * 0.25), y + j + (j * 0.25), size, texture)
 		end
 	end
 	return out

mods/HUD/mcl_inventory/API.md

@@ -0,0 +1,35 @@
+# `mcl_inventory`
+
+## `mcl_inventory.register_survival_inventory_tab(def)`
+
+```lua
+mcl_inventory.register_survival_inventory_tab({
+	-- Page identifier
+	-- Used to uniquely identify the tab
+	id = "test",
+
+	-- The tab description, can be translated
+	description = "Test",
+
+	-- The name of the item that will be used as icon
+	item_icon = "mcl_core:stone",
+
+	-- If true, the main inventory will be shown at the bottom of the tab
+	-- Listrings need to be added by hand
+	show_inventory = true,
+
+	-- This function must return the tab's formspec for the player
+	build = function(player)
+		return "label[1,1;Hello hello]button[2,2;2,2;Hello;hey]"
+	end,
+
+	-- This function will be called in the on_player_receive_fields callback if the tab is currently open
+	handle = function(player, fields)
+		print(dump(fields))
+	end,
+
+	-- This function will be called to know if a player can see the tab
+	-- Returns true by default
+	access = function(player)
+	end,
+```

mods/HUD/mcl_inventory/creative.lua

@@ -3,19 +3,35 @@ local F = minetest.formspec_escape
 local C = minetest.colorize
 
 -- Prepare player info table
+---@type table<string, {page: string, filter: string, start_i: integer, inv_size: integer}>
 local players = {}
 
 -- Containing all the items for each Creative Mode tab
+---@type table<string, string[]>
 local inventory_lists = {}
 
---local mod_player = minetest.get_modpath("mcl_player")
-
 -- Create tables
-local builtin_filter_ids = {"blocks","deco","redstone","rail","food","tools","combat","mobs","brew","matr","misc","all"}
+---@type string[]
+local builtin_filter_ids = {
+	"blocks",
+	"deco",
+	"redstone",
+	"rail",
+	"food",
+	"tools",
+	"combat",
+	"mobs",
+	"brew",
+	"matr",
+	"misc",
+	"all"
+}
+
 for _, f in pairs(builtin_filter_ids) do
 	inventory_lists[f] = {}
 end
 
+---@param tbl string[]
 local function replace_enchanted_books(tbl)
 	for k, item in ipairs(tbl) do
 		if item:find("mcl_enchanting:book_enchanted") == 1 then
@@ -28,20 +44,32 @@ local function replace_enchanted_books(tbl)
 	end
 end
 
---[[ Populate all the item tables. We only do this once. Note this code must be
-executed after loading all the other mods in order to work. ]]
+-- Populate all the item tables. We only do this once.
+-- Note this code must be executed after loading all the other mods in order to work.
 minetest.register_on_mods_loaded(function()
-	for name,def in pairs(minetest.registered_items) do
-		if (not def.groups.not_in_creative_inventory or def.groups.not_in_creative_inventory == 0) and def.description and def.description ~= "" then
+	for name, def in pairs(minetest.registered_items) do
+		if (not def.groups.not_in_creative_inventory or def.groups.not_in_creative_inventory == 0) and def.description and
+			def.description ~= "" then
+			---@param def mt.ItemDef|mt.NodeDef
 			local function is_redstone(def)
-				return def.mesecons or def.groups.mesecon or def.groups.mesecon_conductor_craftable or def.groups.mesecon_effecor_off
+				return def.mesecons or def.groups.mesecon or def.groups.mesecon_conductor_craftable or
+					def.groups.mesecon_effecor_off
 			end
+
+			---@param def mt.ItemDef|mt.NodeDef
 			local function is_tool(def)
 				return def.groups.tool or (def.tool_capabilities and def.tool_capabilities.damage_groups == nil)
 			end
+
+			---@param def mt.ItemDef|mt.NodeDef
 			local function is_weapon_or_armor(def)
-				return def.groups.weapon or def.groups.weapon_ranged or def.groups.ammo or def.groups.combat_item or ((def.groups.armor_head or def.groups.armor_torso or def.groups.armor_legs or def.groups.armor_feet or def.groups.horse_armor) and def.groups.non_combat_armor ~= 1)
+				return def.groups.weapon or def.groups.weapon_ranged or def.groups.ammo or def.groups.combat_item or
+					(
+						(
+							def.groups.armor_head or def.groups.armor_torso or def.groups.armor_legs or def.groups.armor_feet or
+							def.groups.horse_armor) and def.groups.non_combat_armor ~= 1)
 			end
+
 			-- Is set to true if it was added in any category besides misc
 			local nonmisc = false
 			if def.groups.building_block then
@@ -110,6 +138,11 @@ minetest.register_on_mods_loaded(function()
 	end
 end)
 
+---@param name string
+---@param description string
+---@param lang mt.LangCode
+---@param filter string
+---@return integer
 local function filter_item(name, description, lang, filter)
 	local desc
 	if not lang then
@@ -120,13 +153,16 @@ local function filter_item(name, description, lang, filter)
 	return string.find(name, filter, nil, true) or string.find(desc, filter, nil, true)
 end
 
+---@param filter string
+---@param player mt.PlayerObjectRef
 local function set_inv_search(filter, player)
 	local playername = player:get_player_name()
-	local inv = minetest.get_inventory({type="detached", name="creative_"..playername})
+	local inv = minetest.get_inventory({ type = "detached", name = "creative_" .. playername })
 	local creative_list = {}
 	local lang = minetest.get_player_information(playername).lang_code
-	for name,def in pairs(minetest.registered_items) do
-		if (not def.groups.not_in_creative_inventory or def.groups.not_in_creative_inventory == 0) and def.description and def.description ~= "" then
+	for name, def in pairs(minetest.registered_items) do
+		if (not def.groups.not_in_creative_inventory or def.groups.not_in_creative_inventory == 0) and def.description and
+			def.description ~= "" then
 			if filter_item(string.lower(def.name), def.description, lang, filter) then
 				table.insert(creative_list, name)
 			end
@@ -147,9 +183,11 @@ local function set_inv_search(filter, player)
 	inv:set_list("main", creative_list)
 end
 
+---@param page string
+---@param player mt.PlayerObjectRef
 local function set_inv_page(page, player)
 	local playername = player:get_player_name()
-	local inv = minetest.get_inventory({type="detached", name="creative_"..playername})
+	local inv = minetest.get_inventory({ type = "detached", name = "creative_" .. playername })
 	inv:set_size("main", 0)
 	local creative_list = {}
 	if inventory_lists[page] then -- Standard filter
@@ -160,9 +198,11 @@ local function set_inv_page(page, player)
 	inv:set_list("main", creative_list)
 end
 
+
+---@param player mt.PlayerObjectRef
 local function init(player)
 	local playername = player:get_player_name()
-	minetest.create_detached_inventory("creative_"..playername, {
+	minetest.create_detached_inventory("creative_" .. playername, {
 		allow_move = function(inv, from_list, from_index, to_list, to_index, count, player)
 			if minetest.is_creative_enabled(playername) then
 				return count
@@ -197,24 +237,45 @@ local trash = minetest.create_detached_inventory("trash", {
 		inv:set_stack(listname, index, "")
 	end,
 })
+
 trash:set_size("main", 1)
 
-local noffset = {} -- numeric tab offset
-local offset = {} -- string offset:
-local boffset = {} --
-local hoch = {}
-local filtername = {}
---local bg = {}
+------------------------------
+-- Formspec Precalculations --
+------------------------------
 
-local noffset_x_start = -0.24
+-- Numeric position of tab background image, indexed by tab name
+---@type table<string, {[0]: number, [1]: number}>
+local noffset = {}
+
+-- String position of tab button background image, indexed by tab name
+---@type table<string, string>
+local offset = {}
+
+-- String position of tab button, indexed by tab name
+---@type table<string, string>
+local boffset = {}
+
+-- Used to determine the tab button background image
+---@type table<string, ""|"_down">
+local button_bg_postfix = {}
+
+-- Tab caption/tooltip translated string, indexed by tab name
+---@type table<string, string>
+local filtername = {}
+
+local noffset_x_start = 0.2
 local noffset_x = noffset_x_start
-local noffset_y = -0.25
+local noffset_y = -1.34
+
+---@param id string
+---@param right? boolean
 local function next_noffset(id, right)
 	if right then
-		noffset[id] = { 8.94, noffset_y }
+		noffset[id] = { 11.3, noffset_y }
 	else
 		noffset[id] = { noffset_x, noffset_y }
-		noffset_x = noffset_x + 1.25
+		noffset_x = noffset_x + 1.6
 	end
 end
 
@@ -228,7 +289,7 @@ next_noffset("misc")
 next_noffset("nix", true)
 
 noffset_x = noffset_x_start
-noffset_y = 8.12
+noffset_y = 8.64
 
 -- Lower row
 next_noffset("food")
@@ -238,25 +299,25 @@ next_noffset("mobs")
 next_noffset("matr")
 next_noffset("inv", true)
 
-for k,v in pairs(noffset) do
+for k, v in pairs(noffset) do
 	offset[k] = tostring(v[1]) .. "," .. tostring(v[2])
-	boffset[k] = tostring(v[1]+0.19) .. "," .. tostring(v[2]+0.25)
+	boffset[k] = tostring(v[1] + 0.24) .. "," .. tostring(v[2] + 0.25)
 end
 
-hoch["blocks"] = ""
-hoch["deco"] = ""
-hoch["redstone"] = ""
-hoch["rail"] = ""
-hoch["brew"] = ""
-hoch["misc"] = ""
-hoch["nix"] = ""
-hoch["default"] = ""
-hoch["food"] = "_down"
-hoch["tools"] = "_down"
-hoch["combat"] = "_down"
-hoch["mobs"] = "_down"
-hoch["matr"] = "_down"
-hoch["inv"] = "_down"
+button_bg_postfix["blocks"] = ""
+button_bg_postfix["deco"] = ""
+button_bg_postfix["redstone"] = ""
+button_bg_postfix["rail"] = ""
+button_bg_postfix["brew"] = ""
+button_bg_postfix["misc"] = ""
+button_bg_postfix["nix"] = ""
+button_bg_postfix["default"] = ""
+button_bg_postfix["food"] = "_down"
+button_bg_postfix["tools"] = "_down"
+button_bg_postfix["combat"] = "_down"
+button_bg_postfix["mobs"] = "_down"
+button_bg_postfix["matr"] = "_down"
+button_bg_postfix["inv"] = "_down"
 
 filtername["blocks"] = S("Building Blocks")
 filtername["deco"] = S("Decoration Blocks")
@@ -291,197 +352,252 @@ filtername["inv"] = S("Survival Inventory")
 	bg["default"] = dark_bg
 end]]
 
+-- Item name representing a tab, indexed by tab name
+---@type table<string, string>
+local tab_icon = {
+	blocks = "mcl_core:brick_block",
+	deco = "mcl_flowers:peony",
+	redstone = "mesecons:redstone",
+	rail = "mcl_minecarts:golden_rail",
+	misc = "mcl_buckets:bucket_lava",
+	nix = "mcl_compass:compass",
+	food = "mcl_core:apple",
+	tools = "mcl_core:axe_iron",
+	combat = "mcl_core:sword_gold",
+	mobs = "mobs_mc:cow",
+	brew = "mcl_potions:dragon_breath",
+	matr = "mcl_core:stick",
+	inv = "mcl_chests:chest",
+}
+
+-- Get the player configured stack size when taking items from creative inventory
+---@param player mt.PlayerObjectRef
+---@return integer
 local function get_stack_size(player)
 	return player:get_meta():get_int("mcl_inventory:switch_stack")
 end
 
+-- Set the player configured stack size when taking items from creative inventory
+---@param player mt.PlayerObjectRef
+---@param n integer
 local function set_stack_size(player, n)
 	player:get_meta():set_int("mcl_inventory:switch_stack", n)
 end
 
-minetest.register_on_joinplayer(function (player)
+minetest.register_on_joinplayer(function(player)
 	if get_stack_size(player) == 0 then
 		set_stack_size(player, 64)
 	end
 end)
 
+---@param player mt.PlayerObjectRef
 function mcl_inventory.set_creative_formspec(player)
 	local playername = player:get_player_name()
 	if not players[playername] then return end
 
 	local start_i = players[playername].start_i
-	local pagenum = start_i / (9*5) + 1
-	local name = players[playername].page
+	local pagenum = start_i / (9 * 5) + 1
+	local page = players[playername].page
 	local inv_size = players[playername].inv_size
 	local filter = players[playername].filter
-	local pagemax = math.max(1, math.floor((inv_size-1) / (9*5) + 1))
+
+	if not inv_size then
+		if page == "nix" then
+			local inv = minetest.get_inventory({ type = "detached", name = "creative_" .. playername })
+			inv_size = inv:get_size("main")
+		elseif page and page ~= "inv" then
+			inv_size = #(inventory_lists[page])
+		else
+			inv_size = 0
+		end
+	end
+	local pagemax = math.max(1, math.floor((inv_size - 1) / (9 * 5) + 1))
+	local name = "nix"
 	local main_list
-	local listrings = "listring[detached:creative_"..playername..";main]"..
-		"listring[current_player;main]"..
-		"listring[detached:trash;main]"
+	local listrings = table.concat({
+		"listring[detached:creative_" .. playername .. ";main]",
+		"listring[current_player;main]",
+		"listring[detached:trash;main]",
+	})
+
+	if page then
+		name = page
+		if players[playername] then
+			players[playername].page = page
+		end
+	end
 
-	local inv_bg = "crafting_inventory_creative.png"
 	if name == "inv" then
-		inv_bg = "crafting_inventory_creative_survival.png"
-
 		-- Background images for armor slots (hide if occupied)
 		local armor_slot_imgs = ""
 		local inv = player:get_inventory()
 		if inv:get_stack("armor", 2):is_empty() then
-			armor_slot_imgs = armor_slot_imgs .. "image[2.5,1.3;1,1;mcl_inventory_empty_armor_slot_helmet.png]"
+			armor_slot_imgs = armor_slot_imgs .. "image[3.5,0.375;1,1;mcl_inventory_empty_armor_slot_helmet.png]"
 		end
 		if inv:get_stack("armor", 3):is_empty() then
-			armor_slot_imgs = armor_slot_imgs .. "image[2.5,2.75;1,1;mcl_inventory_empty_armor_slot_chestplate.png]"
+			armor_slot_imgs = armor_slot_imgs .. "image[3.5,2.125;1,1;mcl_inventory_empty_armor_slot_chestplate.png]"
 		end
 		if inv:get_stack("armor", 4):is_empty() then
-			armor_slot_imgs = armor_slot_imgs .. "image[5.5,1.3;1,1;mcl_inventory_empty_armor_slot_leggings.png]"
+			armor_slot_imgs = armor_slot_imgs .. "image[7.25,0.375;1,1;mcl_inventory_empty_armor_slot_leggings.png]"
 		end
 		if inv:get_stack("armor", 5):is_empty() then
-			armor_slot_imgs = armor_slot_imgs .. "image[5.5,2.75;1,1;mcl_inventory_empty_armor_slot_boots.png]"
+			armor_slot_imgs = armor_slot_imgs .. "image[7.25,2.125;1,1;mcl_inventory_empty_armor_slot_boots.png]"
 		end
 
 		if inv:get_stack("offhand", 1):is_empty() then
-			armor_slot_imgs = armor_slot_imgs .. "image[1.5,2.025;1,1;mcl_inventory_empty_armor_slot_shield.png]"
+			armor_slot_imgs = armor_slot_imgs .. "image[2.25,1.25;1,1;mcl_inventory_empty_armor_slot_shield.png]"
 		end
 
 		local stack_size = get_stack_size(player)
 
 		-- Survival inventory slots
-		main_list = "list[current_player;main;0,3.75;9,3;9]" ..
-			mcl_formspec.get_itemslot_bg(0, 3.75, 9, 3) ..
-			
+		main_list = table.concat({
+			mcl_formspec.get_itemslot_bg_v4(0.375, 3.375, 9, 3),
+			"list[current_player;main;0.375,3.375;9,3;9]",
+
 			-- Armor
-			"list[current_player;armor;2.5,1.3;1,1;1]" ..
-			"list[current_player;armor;2.5,2.75;1,1;2]" ..
-			"list[current_player;armor;5.5,1.3;1,1;3]" ..
-			"list[current_player;armor;5.5,2.75;1,1;4]" ..
-			mcl_formspec.get_itemslot_bg(2.5, 1.3, 1, 1) ..
-			mcl_formspec.get_itemslot_bg(2.5, 2.75, 1, 1) ..
-			mcl_formspec.get_itemslot_bg(5.5, 1.3, 1, 1) ..
-			mcl_formspec.get_itemslot_bg(5.5, 2.75, 1, 1) ..
-			"list[current_player;offhand;1.5,2.025;1,1]" ..
-			mcl_formspec.get_itemslot_bg(1.5, 2.025, 1, 1) ..
-			armor_slot_imgs ..
-			
+			mcl_formspec.get_itemslot_bg_v4(3.5, 0.375, 1, 1),
+			mcl_formspec.get_itemslot_bg_v4(3.5, 2.125, 1, 1),
+			mcl_formspec.get_itemslot_bg_v4(7.25, 0.375, 1, 1),
+			mcl_formspec.get_itemslot_bg_v4(7.25, 2.125, 1, 1),
+			"list[current_player;armor;3.5,0.375;1,1;1]",
+			"list[current_player;armor;3.5,2.125;1,1;2]",
+			"list[current_player;armor;7.25,0.375;1,1;3]",
+			"list[current_player;armor;7.25,2.125;1,1;4]",
+
+			-- Offhand
+			mcl_formspec.get_itemslot_bg_v4(2.25, 1.25, 1, 1),
+			"list[current_player;offhand;2.25,1.25;1,1]",
+
+			armor_slot_imgs,
+
 			-- Player preview
-			mcl_player.get_player_formspec_model(player, 3.9, 1.4, 1.2333, 2.4666, "") ..
-			
+			"image[4.75,0.33;2.25,2.83;mcl_inventory_background9.png;2]",
+			mcl_player.get_player_formspec_model(player, 4.75, 0.45, 2.25, 2.75, ""),
+
 			-- Crafting guide button
-			"image_button[9,1;1,1;craftguide_book.png;__mcl_craftguide;]" ..
-			"tooltip[__mcl_craftguide;"..F(S("Recipe book")) .. "]" ..
-			
+			"image_button[11.575,0.825;1.1,1.1;craftguide_book.png;__mcl_craftguide;]",
+			"tooltip[__mcl_craftguide;" .. F(S("Recipe book")) .. "]",
+
 			-- Help button
-			"image_button[9,2;1,1;doc_button_icon_lores.png;__mcl_doc;]" ..
-			"tooltip[__mcl_doc;" .. F(S("Help")) .. "]" ..
-			
-			-- Achievements button
-			"image_button[9,3;1,1;mcl_achievements_button.png;__mcl_achievements;]" ..
-			--"style_type[image_button;border=;bgimg=;bgimg_pressed=]" ..
-			"tooltip[__mcl_achievements;"..F(S("Advancements")) .. "]" ..
-			
+			"image_button[11.575,2.075;1.1,1.1;doc_button_icon_lores.png;__mcl_doc;]",
+			"tooltip[__mcl_doc;" .. F(S("Help")) .. "]",
+
+			-- Advancements button
+			"image_button[11.575,3.325;1.1,1.1;mcl_achievements_button.png;__mcl_achievements;]",
+			--"style_type[image_button;border=;bgimg=;bgimg_pressed=]",
+			"tooltip[__mcl_achievements;" .. F(S("Advancements")) .. "]",
+
 			-- Switch stack size button
-			"image_button[9,4;1,1;default_apple.png;__switch_stack;]" ..
-			"label[9.4,4.4;" .. F(C("#FFFFFF", stack_size ~= 1 and stack_size or "")) .. "]" ..
-			"tooltip[__switch_stack;" .. F(S("Switch stack size")) .. "]"
-			
-		-- Skins button
-		if minetest.global_exists("mcl_skins") then
-			main_list = main_list ..
-				"image_button[9,5;1,1;mcl_skins_button.png;__mcl_skins;]" ..
-				"tooltip[__mcl_skins;"..F(S("Select player skin")) .. "]"
-		end
+			"image_button[11.575,4.575;1.1,1.1;default_apple.png;__switch_stack;]",
+			"label[12.275,5.35;" .. F(C("#FFFFFF", tostring(stack_size ~= 1 and stack_size or ""))) .. "]",
+			"tooltip[__switch_stack;" .. F(S("Switch stack size")) .. "]",
+
+			-- Skins button
+			"image_button[11.575,5.825;1.1,1.1;mcl_skins_button.png;__mcl_skins;]",
+			"tooltip[__mcl_skins;" .. F(S("Select player skin")) .. "]",
+		})
 
 		-- For shortcuts
 		listrings = listrings ..
-			"listring[detached:"..playername.."_armor;armor]"..
+			"listring[detached:" .. playername .. "_armor;armor]" ..
 			"listring[current_player;main]"
 	else
+
+		--local nb_lines = math.ceil(inv_size / 9)
 		-- Creative inventory slots
-		main_list = "list[detached:creative_"..playername..";main;0,1.75;9,5;"..tostring(start_i).."]"..
-			mcl_formspec.get_itemslot_bg(0,1.75,9,5)..
-		-- Page buttons
-			"label[9.0,5.5;"..F(S("@1/@2", pagenum, pagemax)).."]"..
-			"image_button[9.0,6.0;0.7,0.7;crafting_creative_prev.png;creative_prev;]"..
-			"image_button[9.5,6.0;0.7,0.7;crafting_creative_next.png;creative_next;]"
+		main_list = table.concat({
+			mcl_formspec.get_itemslot_bg_v4(0.375, 0.875, 9, 5),
+
+			-- Basic code to replace buttons by scrollbar
+			-- Require Minetest 5.8
+			--
+			--"scroll_container[0.375,0.875;11.575,6;scroll;vertical;1.25]",
+			--"list[detached:creative_" .. playername .. ";main;0,0;9," .. nb_lines .. ";]",
+			--"scroll_container_end[]",
+			--"scrollbaroptions[min=0;max=" .. math.max(nb_lines - 5, 0) .. ";smallstep=1;largesteps=1;arrows=hide]",
+			--"scrollbar[11.75,0.825;0.75,6.1;vertical;scroll;0]",
+
+			"list[detached:creative_" .. playername .. ";main;0.375,0.875;9,5;" .. tostring(start_i) .. "]",
+
+			-- Page buttons
+			"label[11.65,4.33;" .. F(S("@1 / @2", pagenum, pagemax)) .. "]",
+			"image_button[11.575,4.58;1.1,1.1;crafting_creative_prev.png^[transformR270;creative_prev;]",
+			"image_button[11.575,5.83;1.1,1.1;crafting_creative_next.png^[transformR270;creative_next;]",
+		})
 	end
 
-	local tab_icon = {
-		blocks = "mcl_core:brick_block",
-		deco = "mcl_flowers:peony",
-		redstone = "mesecons:redstone",
-		rail = "mcl_minecarts:golden_rail",
-		misc = "mcl_buckets:bucket_lava",
-		nix = "mcl_compass:compass",
-		food = "mcl_core:apple",
-		tools = "mcl_core:axe_iron",
-		combat = "mcl_core:sword_gold",
-		mobs = "mobs_mc:cow",
-		brew = "mcl_potions:dragon_breath",
-		matr = "mcl_core:stick",
-		inv = "mcl_chests:chest",
-	}
+	---@param current_tab string
+	---@param this_tab string
+	---@return string
 	local function tab(current_tab, this_tab)
 		local bg_img
 		if current_tab == this_tab then
-			bg_img = "crafting_creative_active"..hoch[this_tab]..".png"
+			bg_img = "crafting_creative_active" .. button_bg_postfix[this_tab] .. ".png"
 		else
-			bg_img = "crafting_creative_inactive"..hoch[this_tab]..".png"
+			bg_img = "crafting_creative_inactive" .. button_bg_postfix[this_tab] .. ".png"
 		end
-		return
-			"style["..this_tab..";border=false;bgimg=;bgimg_pressed=]"..
-			"item_image_button[" .. boffset[this_tab] ..";1,1;"..tab_icon[this_tab]..";"..this_tab..";]"..
-			"image[" .. offset[this_tab] .. ";1.5,1.44;" .. bg_img .. "]"
+		return table.concat({
+			"style[" .. this_tab .. ";border=false;bgimg=;bgimg_pressed=;noclip=true]",
+			"image[" .. offset[this_tab] .. ";1.5,1.44;" .. bg_img .. "]",
+			"item_image_button[" .. boffset[this_tab] .. ";1,1;" .. tab_icon[this_tab] .. ";" .. this_tab .. ";]",
+			"tooltip[blocks;" .. F(filtername[this_tab]) .. "]"
+		})
 	end
+
 	local caption = ""
 	if name ~= "inv" and filtername[name] then
-		caption = "label[0,1.2;"..F(minetest.colorize("#313131", filtername[name])).."]"
+		caption = "label[0.375,0.375;" .. F(C(mcl_formspec.label_color, filtername[name])) .. "]"
 	end
 
-	local formspec = "size[10,9.3]"..
-		"no_prepend[]"..
-		mcl_vars.gui_nonbg..mcl_vars.gui_bg_color..
-		"background[-0.19,-0.25;10.5,9.87;"..inv_bg.."]"..
-		"label[-5,-5;"..name.."]"..
-		tab(name, "blocks") ..
-		"tooltip[blocks;"..F(filtername["blocks"]).."]"..
-		tab(name, "deco") ..
-		"tooltip[deco;"..F(filtername["deco"]).."]"..
-		tab(name, "redstone") ..
-		"tooltip[redstone;"..F(filtername["redstone"]).."]"..
-		tab(name, "rail") ..
-		"tooltip[rail;"..F(filtername["rail"]).."]"..
-		tab(name, "misc") ..
-		"tooltip[misc;"..F(filtername["misc"]).."]"..
-		tab(name, "nix") ..
-		"tooltip[nix;"..F(filtername["nix"]).."]"..
-		caption..
-		"list[current_player;main;0,7;9,1;]"..
-		mcl_formspec.get_itemslot_bg(0,7,9,1)..
-		main_list..
-		tab(name, "food") ..
-		"tooltip[food;"..F(filtername["food"]).."]"..
-		tab(name, "tools") ..
-		"tooltip[tools;"..F(filtername["tools"]).."]"..
-		tab(name, "combat") ..
-		"tooltip[combat;"..F(filtername["combat"]).."]"..
-		tab(name, "mobs") ..
-		"tooltip[mobs;"..F(filtername["mobs"]).."]"..
-		tab(name, "brew") ..
-		"tooltip[brew;"..F(filtername["brew"]).."]"..
-		tab(name, "matr") ..
-		"tooltip[matr;"..F(filtername["matr"]).."]"..
-		tab(name, "inv") ..
-		"tooltip[inv;"..F(filtername["inv"]).."]"..
-		"list[detached:trash;main;9,7;1,1;]"..
-		mcl_formspec.get_itemslot_bg(9,7,1,1)..
-		"image[9,7;1,1;crafting_creative_trash.png]"..
-		listrings
+	local formspec = table.concat({
+		"formspec_version[6]",
+		"size[13,8.75]",
+
+		"style_type[image;noclip=true]",
+
+		-- Hotbar
+		mcl_formspec.get_itemslot_bg_v4(0.375, 7.375, 9, 1),
+		"list[current_player;main;0.375,7.375;9,1;]",
+
+		-- Trash
+		mcl_formspec.get_itemslot_bg_v4(11.625, 7.375, 1, 1, nil, "crafting_creative_trash.png"),
+		"list[detached:trash;main;11.625,7.375;1,1;]",
+
+		main_list,
+
+		caption,
+
+		listrings,
+
+		tab(name, "blocks"),
+		tab(name, "deco"),
+		tab(name, "redstone"),
+		tab(name, "rail"),
+		tab(name, "misc"),
+		tab(name, "nix"),
+
+		tab(name, "food"),
+		tab(name, "tools"),
+		tab(name, "combat"),
+		tab(name, "mobs"),
+		tab(name, "brew"),
+		tab(name, "matr"),
+		tab(name, "inv"),
+	})
 
 	if name == "nix" then
-		formspec = formspec .. "field[5.3,1.34;4,0.75;search;;"..minetest.formspec_escape(filter).."]"
-		formspec = formspec .. "field_close_on_enter[search;false]"
+		if filter == nil then
+			filter = ""
+		end
+
+		formspec = formspec .. table.concat({
+			"field[5.325,0.15;6.1,0.6;search;;" .. minetest.formspec_escape(filter) .. "]",
+			"field_close_on_enter[search;false]",
+			"set_focus[search;true]",
+		})
 	end
-	if pagenum then formspec = formspec .. "p"..tostring(pagenum) end
+	if pagenum then formspec = formspec .. "p" .. tostring(pagenum) end
 	player:set_inventory_formspec(formspec)
 end
 
@@ -500,50 +616,50 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 
 	if fields.blocks then
 		if players[name].page == "blocks" then return end
-		set_inv_page("blocks",player)
+		set_inv_page("blocks", player)
 		page = "blocks"
 	elseif fields.deco then
 		if players[name].page == "deco" then return end
-		set_inv_page("deco",player)
+		set_inv_page("deco", player)
 		page = "deco"
 	elseif fields.redstone then
 		if players[name].page == "redstone" then return end
-		set_inv_page("redstone",player)
+		set_inv_page("redstone", player)
 		page = "redstone"
 	elseif fields.rail then
 		if players[name].page == "rail" then return end
-		set_inv_page("rail",player)
+		set_inv_page("rail", player)
 		page = "rail"
 	elseif fields.misc then
 		if players[name].page == "misc" then return end
-		set_inv_page("misc",player)
+		set_inv_page("misc", player)
 		page = "misc"
 	elseif fields.nix then
-		set_inv_page("all",player)
+		set_inv_page("all", player)
 		page = "nix"
 	elseif fields.food then
 		if players[name].page == "food" then return end
-		set_inv_page("food",player)
+		set_inv_page("food", player)
 		page = "food"
 	elseif fields.tools then
 		if players[name].page == "tools" then return end
-		set_inv_page("tools",player)
+		set_inv_page("tools", player)
 		page = "tools"
 	elseif fields.combat then
 		if players[name].page == "combat" then return end
-		set_inv_page("combat",player)
+		set_inv_page("combat", player)
 		page = "combat"
 	elseif fields.mobs then
 		if players[name].page == "mobs" then return end
-		set_inv_page("mobs",player)
+		set_inv_page("mobs", player)
 		page = "mobs"
 	elseif fields.brew then
 		if players[name].page == "brew" then return end
-		set_inv_page("brew",player)
+		set_inv_page("brew", player)
 		page = "brew"
 	elseif fields.matr then
 		if players[name].page == "matr" then return end
-		set_inv_page("matr",player)
+		set_inv_page("matr", player)
 		page = "matr"
 	elseif fields.inv then
 		if players[name].page == "inv" then return end
@@ -552,7 +668,7 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 		set_inv_page("all", player)
 		page = "nix"
 	elseif fields.search and not fields.creative_next and not fields.creative_prev then
-		set_inv_search(string.lower(fields.search),player)
+		set_inv_search(string.lower(fields.search), player)
 		page = "nix"
 	elseif fields.__switch_stack then
 		local switch = 1
@@ -570,20 +686,20 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 
 	local start_i = players[name].start_i
 	if fields.creative_prev then
-		start_i = start_i - 9*5
+		start_i = start_i - 9 * 5
 	elseif fields.creative_next then
-		start_i = start_i + 9*5
+		start_i = start_i + 9 * 5
 	else
 		-- Reset scroll bar if not scrolled
 		start_i = 0
 	end
 	if start_i < 0 then
-		start_i = start_i + 9*5
+		start_i = start_i + 9 * 5
 	end
 
 	local inv_size
 	if page == "nix" then
-		local inv = minetest.get_inventory({type="detached", name="creative_"..name})
+		local inv = minetest.get_inventory({ type = "detached", name = "creative_" .. name })
 		inv_size = inv:get_size("main")
 	elseif page and page ~= "inv" then
 		inv_size = #(inventory_lists[page])
@@ -593,7 +709,7 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 	players[name].inv_size = inv_size
 
 	if start_i >= inv_size then
-		start_i = start_i - 9*5
+		start_i = start_i - 9 * 5
 	end
 	if start_i < 0 or start_i >= inv_size then
 		start_i = 0
@@ -609,11 +725,34 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 	mcl_inventory.set_creative_formspec(player)
 end)
 
-
 minetest.register_on_placenode(function(pos, newnode, placer, oldnode, itemstack)
 	return placer and placer:is_player() and minetest.is_creative_enabled(placer:get_player_name())
 end)
 
+if minetest.is_creative_enabled("") then
+	minetest.register_on_placenode(function(pos, newnode, placer, oldnode, itemstack)
+		-- Place infinite nodes, except for shulker boxes
+		local group = minetest.get_item_group(itemstack:get_name(), "shulker_box")
+		return group == 0 or group == nil
+	end)
+
+	function minetest.handle_node_drops(pos, drops, digger)
+		if not digger or not digger:is_player() then
+			for _, item in ipairs(drops) do
+				minetest.add_item(pos, item)
+			end
+		end
+		local inv = digger:get_inventory()
+		if inv then
+			for _, item in ipairs(drops) do
+				if not inv:contains_item("main", item, true) then
+					inv:add_item("main", item)
+				end
+			end
+		end
+	end
+end
+
 minetest.register_on_joinplayer(function(player)
 	-- Initialize variables and inventory
 	local name = player:get_player_name()
@@ -629,7 +768,8 @@ minetest.register_on_joinplayer(function(player)
 end)
 
 minetest.register_on_player_inventory_action(function(player, action, inventory, inventory_info)
-	if minetest.is_creative_enabled(player:get_player_name()) and get_stack_size(player) == 64 and action == "put" and inventory_info.listname == "main" then
+	if minetest.is_creative_enabled(player:get_player_name()) and get_stack_size(player) == 64 and action == "put" and
+		inventory_info.listname == "main" then
 		local stack = inventory_info.stack
 		stack:set_count(stack:get_stack_max())
 		player:get_inventory():set_stack("main", inventory_info.index, stack)

mods/HUD/mcl_inventory/init.lua

@@ -1,13 +1,17 @@
-local S = minetest.get_translator(minetest.get_current_modname())
-local F = minetest.formspec_escape
-
 mcl_inventory = {}
 
+dofile(minetest.get_modpath(minetest.get_current_modname()) .. "/creative.lua")
+dofile(minetest.get_modpath(minetest.get_current_modname()) .. "/survival.lua")
+
 --local mod_player = minetest.get_modpath("mcl_player")
 --local mod_craftguide = minetest.get_modpath("mcl_craftguide")
 
--- Returns a single itemstack in the given inventory to the main inventory, or drop it when there's no space left
-function return_item(itemstack, dropper, pos, inv)
+---Returns a single itemstack in the given inventory to the main inventory, or drop it when there's no space left.
+---@param itemstack mt.ItemStack
+---@param dropper mt.ObjectRef
+---@param pos mt.Vector
+---@param inv mt.InvRef
+local function return_item(itemstack, dropper, pos, inv)
 	if dropper:is_player() then
 		-- Return to main inventory
 		if inv:room_for_item("main", itemstack) then
@@ -15,14 +19,14 @@ function return_item(itemstack, dropper, pos, inv)
 		else
 			-- Drop item on the ground
 			local v = dropper:get_look_dir()
-			local p = {x=pos.x, y=pos.y+1.2, z=pos.z}
-			p.x = p.x+(math.random(1,3)*0.2)
-			p.z = p.z+(math.random(1,3)*0.2)
+			local p = vector.offset(pos, 0, 1.2, 0)
+			p.x = p.x + (math.random(1, 3) * 0.2)
+			p.z = p.z + (math.random(1, 3) * 0.2)
 			local obj = minetest.add_item(p, itemstack)
 			if obj then
-				v.x = v.x*4
-				v.y = v.y*4 + 2
-				v.z = v.z*4
+				v.x = v.x * 4
+				v.y = v.y * 4 + 2
+				v.z = v.z * 4
 				obj:set_velocity(v)
 				obj:get_luaentity()._insta_collect = false
 			end
@@ -34,111 +38,53 @@ function return_item(itemstack, dropper, pos, inv)
 	return itemstack
 end
 
--- Return items in the given inventory list (name) to the main inventory, or drop them if there is no space left
-function return_fields(player, name)
+---Return items in the given inventory list (name) to the main inventory, or drop them if there is no space left.
+---@param player mt.PlayerObjectRef
+---@param name string
+local function return_fields(player, name)
 	local inv = player:get_inventory()
+
 	local list = inv:get_list(name)
 	if not list then return end
-	for i,stack in ipairs(list) do
+	for i, stack in ipairs(list) do
 		return_item(stack, player, player:get_pos(), inv)
 		stack:clear()
 		inv:set_stack(name, i, stack)
 	end
 end
 
-local function set_inventory(player)
+---@param player mt.PlayerObjectRef
+---@param armor_change_only? boolean
+local function set_inventory(player, armor_change_only)
 	if minetest.is_creative_enabled(player:get_player_name()) then
-		mcl_inventory.set_creative_formspec(player)
+		if armor_change_only then
+			-- Stay on survival inventory plage if only the armor has been changed
+			mcl_inventory.set_creative_formspec(player, 0, 0, nil, nil, "inv")
+		else
+			mcl_inventory.set_creative_formspec(player, 0, 1)
+		end
 		return
 	end
-	local inv = player:get_inventory()
-	inv:set_width("craft", 2)
-	inv:set_size("craft", 4)
 
-	local armor_slots = {"helmet", "chestplate", "leggings", "boots"}
-	local armor_slot_imgs = ""
-	for a=1,4 do
-		if inv:get_stack("armor", a+1):is_empty() then
-			armor_slot_imgs = armor_slot_imgs .. "image[0,"..(a-1)..";1,1;mcl_inventory_empty_armor_slot_"..armor_slots[a]..".png]"
-		end
-	end
-
-	if inv:get_stack("offhand", 1):is_empty() then
-		armor_slot_imgs = armor_slot_imgs .. "image[3,2;1,1;mcl_inventory_empty_armor_slot_shield.png]"
-	end
-
-	local form = "size[9,8.75]" ..
-		"background[-0.19,-0.25;9.41,9.49;crafting_formspec_bg.png]" ..
-		mcl_player.get_player_formspec_model(player, 1.0, 0.0, 2.25, 4.5, "") ..
-
-		-- Armor
-		"list[current_player;armor;0,0;1,1;1]" ..
-		"list[current_player;armor;0,1;1,1;2]" ..
-		"list[current_player;armor;0,2;1,1;3]" ..
-		"list[current_player;armor;0,3;1,1;4]" ..
-		mcl_formspec.get_itemslot_bg(0,0,1,1) ..
-		mcl_formspec.get_itemslot_bg(0,1,1,1) ..
-		mcl_formspec.get_itemslot_bg(0,2,1,1) ..
-		mcl_formspec.get_itemslot_bg(0,3,1,1) ..
-		"list[current_player;offhand;3,2;1,1]" ..
-		mcl_formspec.get_itemslot_bg(3,2,1,1) ..
-		armor_slot_imgs ..
-
-		-- Craft and inventory
-		"label[0,4;"..F(minetest.colorize("#313131", S("Inventory"))) .. "]" ..
-		"list[current_player;main;0,4.5;9,3;9]" ..
-		"list[current_player;main;0,7.74;9,1;]" ..
-		"label[4,0.5;"..F(minetest.colorize("#313131", S("Crafting"))) .. "]" ..
-		"list[current_player;craft;4,1;2,2]" ..
-		"list[current_player;craftpreview;7,1.5;1,1;]" ..
-		mcl_formspec.get_itemslot_bg(0, 4.5, 9, 3) ..
-		mcl_formspec.get_itemslot_bg(0, 7.74, 9, 1) ..
-		mcl_formspec.get_itemslot_bg(4, 1,2, 2) ..
-		mcl_formspec.get_itemslot_bg(7, 1.5, 1, 1) ..
-
-		-- Crafting guide button
-		"image_button[4.5,3;1,1;craftguide_book.png;__mcl_craftguide;]" ..
-		"tooltip[__mcl_craftguide;"..F(S("Recipe book")) .. "]" ..
-
-		-- Help button
-		"image_button[8,3;1,1;doc_button_icon_lores.png;__mcl_doc;]" ..
-		"tooltip[__mcl_doc;" .. F(S("Help")) .. "]"
-
-	-- Skins button
-	if minetest.global_exists("mcl_skins") then
-		form = form ..
-			"image_button[3,3;1,1;mcl_skins_button.png;__mcl_skins;]" ..
-			"tooltip[__mcl_skins;" .. F(S("Select player skin")) .. "]"
-	end
-
-	form = form ..
-		-- Achievements button
-		"image_button[7,3;1,1;mcl_achievements_button.png;__mcl_achievements;]" ..
-		"tooltip[__mcl_achievements;" .. F(S("Advancements")) .. "]" ..
-
-		-- For shortcuts
-		"listring[current_player;main]" ..
-		"listring[current_player;armor]" ..
-		"listring[current_player;main]" ..
-		"listring[current_player;craft]" ..
-		"listring[current_player;main]"
-
-	player:set_inventory_formspec(form)
+	player:set_inventory_formspec(mcl_inventory.build_survival_formspec(player))
 end
 
 -- Drop items in craft grid and reset inventory on closing
 minetest.register_on_player_receive_fields(function(player, formname, fields)
 	if fields.quit then
-		return_fields(player,"craft")
-		return_fields(player,"enchanting_lapis")
-		return_fields(player,"enchanting_item")
+		return_fields(player, "craft")
+		return_fields(player, "enchanting_lapis")
+		return_fields(player, "enchanting_item")
 		if not minetest.is_creative_enabled(player:get_player_name()) and (formname == "" or formname == "main") then
 			set_inventory(player)
 		end
 	end
 end)
 
-mcl_inventory.update_inventory_formspec = set_inventory
+
+function mcl_inventory.update_inventory_formspec(player)
+	set_inventory(player)
+end
 
 -- Drop crafting grid items on leaving
 minetest.register_on_leaveplayer(function(player)
@@ -150,6 +96,7 @@ end)
 minetest.register_on_joinplayer(function(player)
 	--init inventory
 	local inv = player:get_inventory()
+
 	inv:set_width("main", 9)
 	inv:set_size("main", 36)
 	inv:set_size("offhand", 1)
@@ -174,73 +121,18 @@ minetest.register_on_joinplayer(function(player)
 	return_fields(player, "enchanting_lapis")
 end)
 
-dofile(minetest.get_modpath(minetest.get_current_modname()).."/creative.lua")
+---@param player mt.PlayerObjectRef
+function mcl_inventory.update_inventory(player)
+	local player_gamemode = mcl_gamemode.get_gamemode(player)
+	if player_gamemode == "creative" then
+		mcl_inventory.set_creative_formspec(player)
+	elseif player_gamemode == "survival" then
+		player:set_inventory_formspec(mcl_inventory.build_survival_formspec(player))
+	end
+end
+
+mcl_gamemode.register_on_gamemode_change(function(player, old_gamemode, new_gamemode)
+	set_inventory(player)
+end)
 
 mcl_player.register_on_visual_change(mcl_inventory.update_inventory_formspec)
-
-local mt_is_creative_enabled = minetest.is_creative_enabled
-
-function minetest.is_creative_enabled(name)
-	if mt_is_creative_enabled(name) then return true end
-	if not name then return false end
-	local p = minetest.get_player_by_name(name)
-	if p then
-		return p:get_meta():get_string("gamemode") == "creative"
-	end
-	return false
-end
-
-local function in_table(n,h)
-	for k,v in pairs(h) do
-		if v == n then return true end
-	end
-	return false
-end
-
-local gamemodes = {
-	"survival",
-	"creative"
-}
-
-function mcl_inventory.player_set_gamemode(p,g)
-	local m = p:get_meta()
-	m:set_string("gamemode",g)
-	if g == "survival" then
-		 mcl_experience.setup_hud(p)
-		 mcl_experience.update(p)
-	elseif g == "creative" then
-		 mcl_experience.remove_hud(p)
-	end
-	mcl_meshhand.update_player(p)
-	set_inventory(p)
-end
-
-minetest.register_chatcommand("gamemode",{
-	params = S("[<gamemode>] [<player>]"),
-	description = S("Change gamemode (survival/creative) for yourself or player"),
-	privs = { server = true },
-	func = function(n,param)
-		-- Full input validation ( just for @erlehmann <3 )
-		local p
-		local args = param:split(" ")
-		if args[2] ~= nil then
-			p = minetest.get_player_by_name(args[2])
-			n = args[2]
-		else
-			p = minetest.get_player_by_name(n)
-		end
-		if not p then
-			return false, S("Player not online")
-		end
-		if args[1] ~= nil and not in_table(args[1],gamemodes) then
-			return false, S("Gamemode " .. args[1] .. " does not exist.")
-		elseif args[1] ~= nil then
-			mcl_inventory.player_set_gamemode(p,args[1])
-		end
-
-		--Result message - show effective game mode
-		local gm = p:get_meta():get_string("gamemode")
-		if gm == "" then gm = gamemodes[1] end
-		return true, S("Gamemode for player ")..n..S(": "..gm)
-	end
-})

mods/HUD/mcl_inventory/mod.conf

@@ -1,5 +1,5 @@
 name = mcl_inventory
 author = BlockMen
 description = Adds the player inventory and creative inventory.
-depends = mcl_init, mcl_formspec, mcl_enchanting, mcl_player
-optional_depends = mcl_armor, mcl_brewing, mcl_potions, mcl_enchanting, mcl_craftguide
+depends = mcl_init, mcl_formspec, mcl_enchanting, mcl_gamemode
+optional_depends = mcl_armor, mcl_brewing, mcl_potions, mcl_enchanting, mcl_craftguide, mcl_player

mods/HUD/mcl_inventory/survival.lua

@@ -0,0 +1,224 @@
+---@diagnostic disable need-check-nil
+
+local table = table
+local ipairs = ipairs
+
+local S = minetest.get_translator("mcl_inventory")
+local F = minetest.formspec_escape
+
+---@type {id: string, description: string, item_icon: string, build: (fun(player: ObjectRef): string), handle: fun(player: ObjectRef, fields: table), access: (fun(player): boolean), show_inventory: boolean}[]
+mcl_inventory.registered_survival_inventory_tabs = {}
+
+---@param def {id: string, description: string, item_icon: string, build: (fun(player: ObjectRef): string), handle: fun(player: ObjectRef, fields: table), access: (fun(player): boolean), show_inventory: boolean}
+function mcl_inventory.register_survival_inventory_tab(def)
+	if #mcl_inventory.registered_survival_inventory_tabs == 7 then
+		error("Too much tabs registered!")
+	end
+
+	assert(def.id)
+	assert(def.description)
+	assert(def.item_icon)
+	assert(def.build)
+	assert(def.handle)
+
+	for _, d in ipairs(mcl_inventory.registered_survival_inventory_tabs) do
+		assert(d.id ~= def.id, "Another tab exists with the same name!")
+	end
+
+	if not def.access then
+		function def.access(player)
+			return true
+		end
+	end
+
+	if def.show_inventory == nil then
+		def.show_inventory = true
+	end
+
+	table.insert(mcl_inventory.registered_survival_inventory_tabs, def)
+end
+
+local player_current_tab = {}
+
+minetest.register_on_joinplayer(function(player, last_login)
+	player_current_tab[player] = "main"
+end)
+
+minetest.register_on_leaveplayer(function(player, timed_out)
+	player_current_tab[player] = nil
+end)
+
+---@param player ObjectRef
+---@param content string
+---@param inventory boolean
+---@param tabname string
+local function build_page(player, content, inventory, tabname)
+	local tab_buttons = "style_type[image;noclip=true]"
+
+	if #mcl_inventory.registered_survival_inventory_tabs ~= 1 then
+		for i, d in ipairs(mcl_inventory.registered_survival_inventory_tabs) do
+			local btn_name = "tab_" .. d.id
+
+			tab_buttons = tab_buttons .. table.concat({
+				"style[" .. btn_name .. ";border=false;bgimg=;bgimg_pressed=;noclip=true]",
+				"image[" ..
+					(0.2 + (i - 1) * 1.6) ..
+					",-1.34;1.5,1.44;" .. (tabname == d.id and "crafting_creative_active.png" or "crafting_creative_inactive.png") ..
+					"]",
+				"item_image_button[" .. (0.44 + (i - 1) * 1.6) .. ",-1.1;1,1;" .. d.item_icon .. ";" .. btn_name .. ";]",
+				"tooltip[" .. btn_name .. ";" .. F(d.description) .. "]"
+			})
+		end
+	end
+
+	return table.concat({
+		"formspec_version[6]",
+		"size[11.75,10.9]",
+
+		inventory and table.concat({
+			--Main inventory
+			mcl_formspec.get_itemslot_bg_v4(0.375, 5.575, 9, 3),
+			"list[current_player;main;0.375,5.575;9,3;9]",
+
+			--Hotbar
+			mcl_formspec.get_itemslot_bg_v4(0.375, 9.525, 9, 1),
+			"list[current_player;main;0.375,9.525;9,1;]"
+		}) or "",
+
+		content,
+		tab_buttons,
+	})
+end
+
+local main_page_static = table.concat({
+	--Armor slots
+	mcl_formspec.get_itemslot_bg_v4(0.375, 0.375, 1, 4),
+	"list[current_player;armor;0.375,0.375;1,1;1]",
+	"list[current_player;armor;0.375,1.625;1,1;2]",
+	"list[current_player;armor;0.375,2.875;1,1;3]",
+	"list[current_player;armor;0.375,4.125;1,1;4]",
+
+	--Player model background
+	"image[1.57,0.343;3.62,4.85;mcl_inventory_background9.png;2]",
+
+	--Offhand
+	mcl_formspec.get_itemslot_bg_v4(5.375, 4.125, 1, 1),
+	"list[current_player;offhand;5.375,4.125;1,1]",
+
+	--Craft grid
+	"label[6.61,0.5;" .. F(minetest.colorize(mcl_formspec.label_color, S("Crafting"))) .. "]",
+
+	mcl_formspec.get_itemslot_bg_v4(6.625, 0.875, 2, 2),
+	"list[current_player;craft;6.625,0.875;2,2]",
+
+	"image[9.125,1.5;1,1;crafting_formspec_arrow.png]",
+
+	mcl_formspec.get_itemslot_bg_v4(10.375, 1.5, 1, 1),
+	"list[current_player;craftpreview;10.375,1.5;1,1;]",
+
+	--Crafting guide button
+	"image_button[6.575,4.075;1.1,1.1;craftguide_book.png;__mcl_craftguide;]",
+	"tooltip[__mcl_craftguide;" .. F(S("Recipe book")) .. "]",
+
+	--Help button
+	"image_button[7.825,4.075;1.1,1.1;doc_button_icon_lores.png;__mcl_doc;]",
+	"tooltip[__mcl_doc;" .. F(S("Help")) .. "]",
+
+	--Skins button
+	"image_button[9.075,4.075;1.1,1.1;mcl_skins_button.png;__mcl_skins;]",
+	"tooltip[__mcl_skins;" .. F(S("Select player skin")) .. "]",
+
+	--Achievements button
+	"image_button[10.325,4.075;1.1,1.1;mcl_achievements_button.png;__mcl_achievements;]",
+	"tooltip[__mcl_achievements;" .. F(S("Achievements")) .. "]",
+
+	--Listring
+	"listring[current_player;main]",
+	"listring[current_player;armor]",
+	"listring[current_player;main]",
+	"listring[current_player;craft]",
+	"listring[current_player;main]",
+})
+
+mcl_inventory.register_survival_inventory_tab({
+	id = "main",
+	description = "Main Inventory",
+	item_icon = "mcl_crafting_table:crafting_table",
+	show_inventory = true,
+	build = function(player)
+		local inv = player:get_inventory()
+
+		local armor_slots = { "helmet", "chestplate", "leggings", "boots" }
+		local armor_slot_imgs = ""
+
+		for a = 1, 4 do
+			if inv:get_stack("armor", a + 1):is_empty() then
+				armor_slot_imgs = armor_slot_imgs ..
+					"image[0.375," .. (0.375 + (a - 1) * 1.25) .. ";1,1;mcl_inventory_empty_armor_slot_" .. armor_slots[a] .. ".png]"
+			end
+		end
+
+		if inv:get_stack("offhand", 1):is_empty() then
+			armor_slot_imgs = armor_slot_imgs .. "image[5.375,4.125;1,1;mcl_inventory_empty_armor_slot_shield.png]"
+		end
+		return main_page_static .. armor_slot_imgs .. mcl_player.get_player_formspec_model(player, 1.57, 0.4, 3.62, 4.85, "")
+	end,
+	handle = function() end,
+})
+
+--[[
+mcl_inventory.register_survival_inventory_tab({
+	id = "test",
+	description = "Test",
+	item_icon = "mcl_core:stone",
+	show_inventory = true,
+	build = function(player)
+		return "label[1,1;Hello hello]button[2,2;2,2;Hello;hey]"
+	end,
+	handle = function(player, fields)
+		print(dump(fields))
+	end,
+})]]
+
+---@param player ObjectRef
+function mcl_inventory.build_survival_formspec(player)
+	local inv = player:get_inventory()
+
+	inv:set_width("craft", 2)
+	inv:set_size("craft", 4)
+
+	local tab = player_current_tab[player]
+
+	local tab_def = nil
+
+	for _, d in ipairs(mcl_inventory.registered_survival_inventory_tabs) do
+		if tab == d.id then
+			tab_def = d
+			break
+		end
+	end
+
+	local form = build_page(player, tab_def.build(player), tab_def.show_inventory, tab)
+
+	return form
+end
+
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	if formname == "" and #mcl_inventory.registered_survival_inventory_tabs ~= 1 and
+		mcl_gamemode.get_gamemode(player) == "survival" then
+		for _, d in ipairs(mcl_inventory.registered_survival_inventory_tabs) do
+			if fields["tab_" .. d.id] and d.access(player) then
+				player_current_tab[player] = d.id
+				mcl_inventory.update_inventory(player)
+				return
+			end
+		end
+
+		for _, d in ipairs(mcl_inventory.registered_survival_inventory_tabs) do
+			if player_current_tab[player] == d.id and d.access(player) then
+				d.handle(player, fields)
+				return
+			end
+		end
+	end
+end)

mods/ITEMS/REDSTONE/mcl_dispensers/init.lua

@@ -8,23 +8,36 @@ All node definitions share a lot of code, so this is the reason why there
 are so many weird tables below.
 ]]
 local S = minetest.get_translator(minetest.get_current_modname())
+local C = minetest.colorize
+local F = minetest.formspec_escape
 
--- For after_place_node
+local dispenser_formspec = table.concat({
+	"formspec_version[4]",
+	"size[11.75,10.425]",
+
+	"label[4.125,0.375;" .. F(C(mcl_formspec.label_color, S("Dispenser"))) .. "]",
+
+	mcl_formspec.get_itemslot_bg_v4(4.125, 0.75, 3, 3),
+	"list[context;main;4.125,0.75;3,3;]",
+
+	"label[0.375,4.7;" .. F(C(mcl_formspec.label_color, S("Inventory"))) .. "]",
+
+	mcl_formspec.get_itemslot_bg_v4(0.375, 5.1, 9, 3),
+	"list[current_player;main;0.375,5.1;9,3;9]",
+
+	mcl_formspec.get_itemslot_bg_v4(0.375, 9.05, 9, 1),
+	"list[current_player;main;0.375,9.05;9,1;]",
+
+	"listring[context;main]",
+	"listring[current_player;main]",
+})
+
+---For after_place_node
+---@param pos Vector
 local function setup_dispenser(pos)
 	-- Set formspec and inventory
-	local form = "size[9,8.75]"..
-	"label[0,4.0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Inventory"))).."]"..
-	"list[current_player;main;0,4.5;9,3;9]"..
-	mcl_formspec.get_itemslot_bg(0,4.5,9,3)..
-	"list[current_player;main;0,7.74;9,1;]"..
-	mcl_formspec.get_itemslot_bg(0,7.74,9,1)..
-	"label[3,0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Dispenser"))).."]"..
-	"list[context;main;3,0.5;3,3;]"..
-	mcl_formspec.get_itemslot_bg(3,0.5,3,3)..
-	"listring[context;main]"..
-	"listring[current_player;main]"
 	local meta = minetest.get_meta(pos)
-	meta:set_string("formspec", form)
+	meta:set_string("formspec", dispenser_formspec)
 	local inv = meta:get_inventory()
 	inv:set_size("main", 9)
 end
@@ -38,9 +51,9 @@ local function orientate_dispenser(pos, placer)
 
 	local node = minetest.get_node(pos)
 	if pitch > 55 then
-		minetest.swap_node(pos, {name="mcl_dispensers:dispenser_up", param2 = node.param2})
+		minetest.swap_node(pos, { name = "mcl_dispensers:dispenser_up", param2 = node.param2 })
 	elseif pitch < -55 then
-		minetest.swap_node(pos, {name="mcl_dispensers:dispenser_down", param2 = node.param2})
+		minetest.swap_node(pos, { name = "mcl_dispensers:dispenser_down", param2 = node.param2 })
 	end
 end
 
@@ -85,11 +98,10 @@ local dispenserdef = {
 		local meta2 = meta:to_table()
 		meta:from_table(oldmetadata)
 		local inv = meta:get_inventory()
-		for i=1, inv:get_size("main") do
+		for i = 1, inv:get_size("main") do
 			local stack = inv:get_stack("main", i)
 			if not stack:is_empty() then
-				local p = {x=pos.x+math.random(0, 10)/10-0.5, y=pos.y, z=pos.z+math.random(0, 10)/10-0.5}
-				minetest.add_item(p, stack)
+				minetest.add_item(vector.offset(pos, math.random(0, 10) / 10 - 0.5, 0, math.random(0, 10) / 10 - 0.5), stack)
 			end
 		end
 		meta:from_table(meta2)
@@ -107,19 +119,19 @@ local dispenserdef = {
 					dropdir = vector.multiply(minetest.facedir_to_dir(node.param2), -1)
 					droppos = vector.add(pos, dropdir)
 				elseif node.name == "mcl_dispensers:dispenser_up" then
-					dropdir = {x=0, y=1, z=0}
-					droppos  = {x=pos.x, y=pos.y+1, z=pos.z}
+					dropdir = vector.new(0, 1, 0)
+					droppos = vector.offset(pos, 0, 1, 0)
 				elseif node.name == "mcl_dispensers:dispenser_down" then
-					dropdir = {x=0, y=-1, z=0}
-					droppos  = {x=pos.x, y=pos.y-1, z=pos.z}
+					dropdir = vector.new(0, -1, 0)
+					droppos = vector.offset(pos, 0, -1, 0)
 				end
 				local dropnode = minetest.get_node(droppos)
 				local dropnodedef = minetest.registered_nodes[dropnode.name]
 				local stacks = {}
-				for i=1,inv:get_size("main") do
+				for i = 1, inv:get_size("main") do
 					local stack = inv:get_stack("main", i)
 					if not stack:is_empty() then
-						table.insert(stacks, {stack = stack, stackpos = i})
+						table.insert(stacks, { stack = stack, stackpos = i })
 					end
 				end
 				if #stacks >= 1 then
@@ -143,9 +155,10 @@ local dispenserdef = {
 
 					-- Armor, mob heads and pumpkins
 					if igroups.armor then
-						local droppos_below = {x = droppos.x, y = droppos.y - 1, z = droppos.z}
+						local droppos_below = vector.offset(droppos, 0, -1, 0)
 
-						for _, objs in ipairs({minetest.get_objects_inside_radius(droppos, 1), minetest.get_objects_inside_radius(droppos_below, 1)}) do
+						for _, objs in ipairs({ minetest.get_objects_inside_radius(droppos, 1),
+							minetest.get_objects_inside_radius(droppos_below, 1) }) do
 							for _, obj in ipairs(objs) do
 								stack = mcl_armor.equip(stack, obj)
 								if stack:is_empty() then
@@ -157,11 +170,11 @@ local dispenserdef = {
 							end
 						end
 
-							-- Place head or pumpkin as node, if equipping it as armor has failed
+						-- Place head or pumpkin as node, if equipping it as armor has failed
 						if not stack:is_empty() then
 							if igroups.head or iname == "mcl_farming:pumpkin_face" then
 								if dropnodedef.buildable_to then
-									minetest.set_node(droppos, {name = iname, param2 = node.param2})
+									minetest.set_node(droppos, { name = iname, param2 = node.param2 })
 									stack:take_item()
 								end
 							end
@@ -169,7 +182,7 @@ local dispenserdef = {
 
 						inv:set_stack("main", stack_id, stack)
 
-					-- Use shears on sheeps
+						-- Use shears on sheeps
 					elseif igroups.shears then
 						for _, obj in pairs(minetest.get_objects_inside_radius(droppos, 1)) do
 							local entity = obj:get_luaentity()
@@ -220,7 +233,7 @@ local dispenserdef = {
 							end
 						end
 
-					-- Spawn Egg
+						-- Spawn Egg
 					elseif igroups.spawn_egg then
 						-- Spawn mob
 						if not dropnodedef.walkable then
@@ -231,7 +244,7 @@ local dispenserdef = {
 							inv:set_stack("main", stack_id, stack)
 						end
 
-					-- Generalized dispension
+						-- Generalized dispension
 					elseif (not dropnodedef.walkable or stackdef._dispense_into_walkable) then
 						--[[ _on_dispense(stack, pos, droppos, dropnode, dropdir)
 							* stack: Itemstack which is dispense
@@ -263,7 +276,7 @@ local dispenserdef = {
 									local item_entity = minetest.add_item(droppos, dropitem)
 									local drop_vel = vector.subtract(droppos, pos)
 									local speed = 3
-									item_entity:set_velocity(vector.multiply(drop_vel,speed))
+									item_entity:set_velocity(vector.multiply(drop_vel, speed))
 								end
 							else
 								stack:take_item()
@@ -280,7 +293,7 @@ local dispenserdef = {
 							local item_entity = minetest.add_item(droppos, dropitem)
 							local drop_vel = vector.subtract(droppos, pos)
 							local speed = 3
-							item_entity:set_velocity(vector.multiply(drop_vel,speed))
+							item_entity:set_velocity(vector.multiply(drop_vel, speed))
 							stack:take_item()
 							inv:set_stack("main", stack_id, stack)
 						end
@@ -299,27 +312,28 @@ local dispenserdef = {
 
 local horizontal_def = table.copy(dispenserdef)
 horizontal_def.description = S("Dispenser")
-horizontal_def._tt_help = S("9 inventory slots").."\n"..S("Launches item when powered by redstone power")
+horizontal_def._tt_help = S("9 inventory slots") .. "\n" .. S("Launches item when powered by redstone power")
 horizontal_def._doc_items_longdesc = S("A dispenser is a block which acts as a redstone component which, when powered with redstone power, dispenses an item. It has a container with 9 inventory slots.")
-horizontal_def._doc_items_usagehelp = S("Place the dispenser in one of 6 possible directions. The “hole” is where items will fly out of the dispenser. Use the dispenser to access its inventory. Insert the items you wish to dispense. Supply the dispenser with redstone energy once to dispense a random item.").."\n\n"..
+horizontal_def._doc_items_usagehelp = S("Place the dispenser in one of 6 possible directions. The “hole” is where items will fly out of the dispenser. Use the dispenser to access its inventory. Insert the items you wish to dispense. Supply the dispenser with redstone energy once to dispense a random item.")
+	.. "\n\n" ..
 
-S("The dispenser will do different things, depending on the dispensed item:").."\n\n"..
+	S("The dispenser will do different things, depending on the dispensed item:") .. "\n\n" ..
 
-S("• Arrows: Are launched").."\n"..
-S("• Eggs and snowballs: Are thrown").."\n"..
-S("• Fire charges: Are fired in a straight line").."\n"..
-S("• Armor: Will be equipped to players and armor stands").."\n"..
-S("• Boats: Are placed on water or are dropped").."\n"..
-S("• Minecart: Are placed on rails or are dropped").."\n"..
-S("• Bone meal: Is applied on the block it is facing").."\n"..
-S("• Empty buckets: Are used to collect a liquid source").."\n"..
-S("• Filled buckets: Are used to place a liquid source").."\n"..
-S("• Heads, pumpkins: Equipped to players and armor stands, or placed as a block").."\n"..
-S("• Shulker boxes: Are placed as a block").."\n"..
-S("• TNT: Is placed and ignited").."\n"..
-S("• Flint and steel: Is used to ignite a fire in air and to ignite TNT").."\n"..
-S("• Spawn eggs: Will summon the mob they contain").."\n"..
-S("• Other items: Are simply dropped")
+	S("• Arrows: Are launched") .. "\n" ..
+	S("• Eggs and snowballs: Are thrown") .. "\n" ..
+	S("• Fire charges: Are fired in a straight line") .. "\n" ..
+	S("• Armor: Will be equipped to players and armor stands") .. "\n" ..
+	S("• Boats: Are placed on water or are dropped") .. "\n" ..
+	S("• Minecart: Are placed on rails or are dropped") .. "\n" ..
+	S("• Bone meal: Is applied on the block it is facing") .. "\n" ..
+	S("• Empty buckets: Are used to collect a liquid source") .. "\n" ..
+	S("• Filled buckets: Are used to place a liquid source") .. "\n" ..
+	S("• Heads, pumpkins: Equipped to players and armor stands, or placed as a block") .. "\n" ..
+	S("• Shulker boxes: Are placed as a block") .. "\n" ..
+	S("• TNT: Is placed and ignited") .. "\n" ..
+	S("• Flint and steel: Is used to ignite a fire in air and to ignite TNT") .. "\n" ..
+	S("• Spawn eggs: Will summon the mob they contain") .. "\n" ..
+	S("• Other items: Are simply dropped")
 
 function horizontal_def.after_place_node(pos, placer, itemstack, pointed_thing)
 	setup_dispenser(pos)
@@ -332,7 +346,7 @@ horizontal_def.tiles = {
 	"default_furnace_side.png", "mcl_dispensers_dispenser_front_horizontal.png"
 }
 horizontal_def.paramtype2 = "facedir"
-horizontal_def.groups = {pickaxey=1, container=2, material_stone=1}
+horizontal_def.groups = { pickaxey = 1, container = 2, material_stone = 1 }
 
 minetest.register_node("mcl_dispensers:dispenser", horizontal_def)
 
@@ -345,7 +359,7 @@ down_def.tiles = {
 	"default_furnace_side.png", "default_furnace_side.png",
 	"default_furnace_side.png", "default_furnace_side.png"
 }
-down_def.groups = {pickaxey=1, container=2,not_in_creative_inventory=1, material_stone=1}
+down_def.groups = { pickaxey = 1, container = 2, not_in_creative_inventory = 1, material_stone = 1 }
 down_def._doc_items_create_entry = false
 down_def.drop = "mcl_dispensers:dispenser"
 minetest.register_node("mcl_dispensers:dispenser_down", down_def)
@@ -365,9 +379,9 @@ minetest.register_node("mcl_dispensers:dispenser_up", up_def)
 minetest.register_craft({
 	output = "mcl_dispensers:dispenser",
 	recipe = {
-		{"mcl_core:cobble", "mcl_core:cobble", "mcl_core:cobble",},
-		{"mcl_core:cobble", "mcl_bows:bow", "mcl_core:cobble",},
-		{"mcl_core:cobble", "mesecons:redstone", "mcl_core:cobble",},
+		{ "mcl_core:cobble", "mcl_core:cobble", "mcl_core:cobble", },
+		{ "mcl_core:cobble", "mcl_bows:bow", "mcl_core:cobble", },
+		{ "mcl_core:cobble", "mesecons:redstone", "mcl_core:cobble", },
 	}
 })
 
@@ -384,6 +398,6 @@ minetest.register_lbm({
 	nodenames = { "mcl_dispensers:dispenser", "mcl_dispensers:dispenser_down", "mcl_dispensers:dispenser_up" },
 	action = function(pos, node)
 		setup_dispenser(pos)
-		minetest.log("action", "[mcl_dispenser] Node formspec updated at "..minetest.pos_to_string(pos))
+		minetest.log("action", "[mcl_dispenser] Node formspec updated at " .. minetest.pos_to_string(pos))
 	end,
 })

mods/ITEMS/REDSTONE/mcl_droppers/init.lua

@@ -9,23 +9,36 @@ are so many weird tables below.
 ]]
 
 local S = minetest.get_translator(minetest.get_current_modname())
+local C = minetest.colorize
+local F = minetest.formspec_escape
 
--- For after_place_node
+local dropper_formspec = table.concat({
+	"formspec_version[4]",
+	"size[11.75,10.425]",
+
+	"label[4.125,0.375;" .. F(C(mcl_formspec.label_color, S("Dropper"))) .. "]",
+
+	mcl_formspec.get_itemslot_bg_v4(4.125, 0.75, 3, 3),
+	"list[context;main;4.125,0.75;3,3;]",
+
+	"label[0.375,4.7;" .. F(C(mcl_formspec.label_color, S("Inventory"))) .. "]",
+
+	mcl_formspec.get_itemslot_bg_v4(0.375, 5.1, 9, 3),
+	"list[current_player;main;0.375,5.1;9,3;9]",
+
+	mcl_formspec.get_itemslot_bg_v4(0.375, 9.05, 9, 1),
+	"list[current_player;main;0.375,9.05;9,1;]",
+
+	"listring[context;main]",
+	"listring[current_player;main]",
+})
+
+---For after_place_node
+---@param pos Vector
 local function setup_dropper(pos)
 	-- Set formspec and inventory
-	local form = "size[9,8.75]"..
-	"label[0,4.0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Inventory"))).."]"..
-	"list[current_player;main;0,4.5;9,3;9]"..
-	mcl_formspec.get_itemslot_bg(0,4.5,9,3)..
-	"list[current_player;main;0,7.74;9,1;]"..
-	mcl_formspec.get_itemslot_bg(0,7.74,9,1)..
-	"label[3,0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Dropper"))).."]"..
-	"list[context;main;3,0.5;3,3;]"..
-	mcl_formspec.get_itemslot_bg(3,0.5,3,3)..
-	"listring[context;main]"..
-	"listring[current_player;main]"
 	local meta = minetest.get_meta(pos)
-	meta:set_string("formspec", form)
+	meta:set_string("formspec", dropper_formspec)
 	local inv = meta:get_inventory()
 	inv:set_size("main", 9)
 end
@@ -38,9 +51,9 @@ local function orientate_dropper(pos, placer)
 	local pitch = placer:get_look_vertical() * (180 / math.pi)
 
 	if pitch > 55 then
-		minetest.swap_node(pos, {name="mcl_droppers:dropper_up"})
+		minetest.swap_node(pos, { name = "mcl_droppers:dropper_up" })
 	elseif pitch < -55 then
-		minetest.swap_node(pos, {name="mcl_droppers:dropper_down"})
+		minetest.swap_node(pos, { name = "mcl_droppers:dropper_down" })
 	end
 end
 
@@ -58,11 +71,10 @@ local dropperdef = {
 		local meta2 = meta:to_table()
 		meta:from_table(oldmetadata)
 		local inv = meta:get_inventory()
-		for i=1, inv:get_size("main") do
+		for i = 1, inv:get_size("main") do
 			local stack = inv:get_stack("main", i)
 			if not stack:is_empty() then
-				local p = {x=pos.x+math.random(0, 10)/10-0.5, y=pos.y, z=pos.z+math.random(0, 10)/10-0.5}
-				minetest.add_item(p, stack)
+				minetest.add_item(vector.offset(pos, math.random(0, 10) / 10 - 0.5, 0, math.random(0, 10) / 10 - 0.5), stack)
 			end
 		end
 		meta:from_table(meta2)
@@ -96,7 +108,7 @@ local dropperdef = {
 	end,
 	_mcl_blast_resistance = 3.5,
 	_mcl_hardness = 3.5,
-	mesecons = {effector = {
+	mesecons = { effector = {
 		-- Drop random item when triggered
 		action_on = function(pos, node)
 			if not pos then return end
@@ -104,11 +116,11 @@ local dropperdef = {
 			local inv = meta:get_inventory()
 			local droppos
 			if node.name == "mcl_droppers:dropper" then
-				droppos  = vector.subtract(pos, minetest.facedir_to_dir(node.param2))
+				droppos = vector.subtract(pos, minetest.facedir_to_dir(node.param2))
 			elseif node.name == "mcl_droppers:dropper_up" then
-				droppos  = {x=pos.x, y=pos.y+1, z=pos.z}
+				droppos = vector.offset(pos, 0, 1, 0)
 			elseif node.name == "mcl_droppers:dropper_down" then
-				droppos  = {x=pos.x, y=pos.y-1, z=pos.z}
+				droppos = vector.offset(pos, 0, -1, 0)
 			end
 			local dropnode = minetest.get_node(droppos)
 			-- Do not drop into solid nodes, unless they are containers
@@ -117,10 +129,10 @@ local dropperdef = {
 				return
 			end
 			local stacks = {}
-			for i=1,inv:get_size("main") do
+			for i = 1, inv:get_size("main") do
 				local stack = inv:get_stack("main", i)
 				if not stack:is_empty() then
-					table.insert(stacks, {stack = stack, stackpos = i})
+					table.insert(stacks, { stack = stack, stackpos = i })
 				end
 			end
 			if #stacks >= 1 then
@@ -136,22 +148,22 @@ local dropperdef = {
 				if not dropped and not dropnodedef.groups.container then
 					-- Drop item normally
 					local pos_variation = 100
-					droppos = {
-						x = droppos.x + math.random(-pos_variation, pos_variation) / 1000,
-						y = droppos.y + math.random(-pos_variation, pos_variation) / 1000,
-						z = droppos.z + math.random(-pos_variation, pos_variation) / 1000,
-					}
+					droppos = vector.offset(droppos,
+						math.random(-pos_variation, pos_variation) / 1000,
+						math.random(-pos_variation, pos_variation) / 1000,
+						math.random(-pos_variation, pos_variation) / 1000
+					)
 					local item_entity = minetest.add_item(droppos, dropitem)
 					local drop_vel = vector.subtract(droppos, pos)
 					local speed = 3
-					item_entity:set_velocity(vector.multiply(drop_vel,speed))
+					item_entity:set_velocity(vector.multiply(drop_vel, speed))
 					stack:take_item()
 					inv:set_stack("main", stack_id, stack)
 				end
 			end
 		end,
 		rules = mesecon.rules.alldirs,
-	}},
+	} },
 	on_rotate = on_rotate,
 }
 
@@ -159,20 +171,21 @@ local dropperdef = {
 
 local horizontal_def = table.copy(dropperdef)
 horizontal_def.description = S("Dropper")
-horizontal_def._tt_help = S("9 inventory slots").."\n"..S("Drops item when powered by redstone power")
+horizontal_def._tt_help = S("9 inventory slots") .. "\n" .. S("Drops item when powered by redstone power")
 horizontal_def._doc_items_longdesc = S("A dropper is a redstone component and a container with 9 inventory slots which, when supplied with redstone power, drops an item or puts it into a container in front of it.")
 horizontal_def._doc_items_usagehelp = S("Droppers can be placed in 6 possible directions, items will be dropped out of the hole. Use the dropper to access its inventory. Supply it with redstone energy once to make the dropper drop or transfer a random item.")
 function horizontal_def.after_place_node(pos, placer, itemstack, pointed_thing)
 	setup_dropper(pos)
 	orientate_dropper(pos, placer)
 end
+
 horizontal_def.tiles = {
 	"default_furnace_top.png", "default_furnace_bottom.png",
 	"default_furnace_side.png", "default_furnace_side.png",
 	"default_furnace_side.png", "mcl_droppers_dropper_front_horizontal.png"
 }
 horizontal_def.paramtype2 = "facedir"
-horizontal_def.groups = {pickaxey=1, container=2, material_stone=1}
+horizontal_def.groups = { pickaxey = 1, container = 2, material_stone = 1 }
 
 minetest.register_node("mcl_droppers:dropper", horizontal_def)
 
@@ -185,7 +198,7 @@ down_def.tiles = {
 	"default_furnace_side.png", "default_furnace_side.png",
 	"default_furnace_side.png", "default_furnace_side.png"
 }
-down_def.groups = {pickaxey=1, container=2,not_in_creative_inventory=1, material_stone=1}
+down_def.groups = { pickaxey = 1, container = 2, not_in_creative_inventory = 1, material_stone = 1 }
 down_def._doc_items_create_entry = false
 down_def.drop = "mcl_droppers:dropper"
 minetest.register_node("mcl_droppers:dropper_down", down_def)
@@ -207,9 +220,9 @@ minetest.register_node("mcl_droppers:dropper_up", up_def)
 minetest.register_craft({
 	output = "mcl_droppers:dropper",
 	recipe = {
-		{"mcl_core:cobble", "mcl_core:cobble", "mcl_core:cobble",},
-		{"mcl_core:cobble", "", "mcl_core:cobble",},
-		{"mcl_core:cobble", "mesecons:redstone", "mcl_core:cobble",},
+		{ "mcl_core:cobble", "mcl_core:cobble", "mcl_core:cobble", },
+		{ "mcl_core:cobble", "", "mcl_core:cobble", },
+		{ "mcl_core:cobble", "mesecons:redstone", "mcl_core:cobble", },
 	}
 })
 
@@ -226,6 +239,6 @@ minetest.register_lbm({
 	nodenames = { "mcl_droppers:dropper", "mcl_droppers:dropper_down", "mcl_droppers:dropper_up" },
 	action = function(pos, node)
 		setup_dropper(pos)
-		minetest.log("action", "[mcl_droppers] Node formspec updated at "..minetest.pos_to_string(pos))
+		minetest.log("action", "[mcl_droppers] Node formspec updated at " .. minetest.pos_to_string(pos))
 	end,
 })

mods/ITEMS/mcl_anvils/init.lua

@@ -1,4 +1,6 @@
 local S = minetest.get_translator(minetest.get_current_modname())
+local F = minetest.formspec_escape
+local C = minetest.colorize
 
 local MAX_NAME_LENGTH = 35
 local MAX_WEAR = 65535
@@ -10,41 +12,65 @@ local MATERIAL_TOOL_REPAIR_BOOST = {
 	MAX_WEAR, -- 100%
 }
 
+---@param set_name? string
 local function get_anvil_formspec(set_name)
 	if not set_name then
 		set_name = ""
 	end
-	return "size[9,8.75]"..
-	"background[-0.19,-0.25;9.41,9.49;mcl_anvils_inventory.png]"..
-	"label[0,4.0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Inventory"))).."]"..
-	"list[current_player;main;0,4.5;9,3;9]"..
-	mcl_formspec.get_itemslot_bg(0,4.5,9,3)..
-	"list[current_player;main;0,7.74;9,1;]"..
-	mcl_formspec.get_itemslot_bg(0,7.74,9,1)..
-	"list[context;input;1,2.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(1,2.5,1,1)..
-	"list[context;input;4,2.5;1,1;1]"..
-	mcl_formspec.get_itemslot_bg(4,2.5,1,1)..
-	"list[context;output;8,2.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(8,2.5,1,1)..
-	"label[3,0.1;"..minetest.formspec_escape(minetest.colorize("#313131", S("Repair and Name"))).."]"..
-	"field[3.25,1;4,1;name;;"..minetest.formspec_escape(set_name).."]"..
-	"field_close_on_enter[name;false]"..
-	"button[7,0.7;2,1;name_button;"..minetest.formspec_escape(S("Set Name")).."]"..
-	"listring[context;output]"..
-	"listring[current_player;main]"..
-	"listring[context;input]"..
-	"listring[current_player;main]"
+
+	return table.concat({
+		"formspec_version[4]",
+		"size[11.75,10.425]",
+
+		"label[4.125,0.375;" .. F(C(mcl_formspec.label_color, S("Repair and Name"))) .. "]",
+
+		"image[0.875,0.375;1.75,1.75;mcl_anvils_inventory_hammer.png]",
+
+		"field[4.125,0.75;7.25,1;name;;" .. F(set_name) .. "]",
+		"field_close_on_enter[name;false]",
+		"set_focus[name;true]",
+
+		mcl_formspec.get_itemslot_bg_v4(1.625, 2.6, 1, 1),
+		"list[context;input;1.625,2.6;1,1;]",
+
+		"image[3.5,2.6;1,1;mcl_anvils_inventory_cross.png]",
+
+		mcl_formspec.get_itemslot_bg_v4(5.375, 2.6, 1, 1),
+		"list[context;input;5.375,2.6;1,1;1]",
+
+		"image[6.75,2.6;2,1;mcl_anvils_inventory_arrow.png]",
+
+		mcl_formspec.get_itemslot_bg_v4(9.125, 2.6, 1, 1),
+		"list[context;output;9.125,2.6;1,1;]",
+
+		-- Player Inventory
+
+		mcl_formspec.get_itemslot_bg_v4(0.375, 5.1, 9, 3),
+		"list[current_player;main;0.375,5.1;9,3;9]",
+
+		mcl_formspec.get_itemslot_bg_v4(0.375, 9.05, 9, 1),
+		"list[current_player;main;0.375,9.05;9,1;]",
+
+		-- Listrings
+
+		"listring[context;output]",
+		"listring[current_player;main]",
+		"listring[context;input]",
+		"listring[current_player;main]",
+	})
 end
 
 -- Given a tool and material stack, returns how many items of the material stack
 -- needs to be used up to repair the tool.
+---@param tool ItemStack
+---@param material ItemStack
+---@return integer
 local function get_consumed_materials(tool, material)
 	local wear = tool:get_wear()
 	--local health = (MAX_WEAR - wear)
 	local matsize = material:get_count()
 	local materials_used = 0
-	for m=1, math.min(4, matsize) do
+	for m = 1, math.min(4, matsize) do
 		materials_used = materials_used + 1
 		if (wear - MATERIAL_TOOL_REPAIR_BOOST[m]) <= 0 then
 			break
@@ -53,27 +79,20 @@ local function get_consumed_materials(tool, material)
 	return materials_used
 end
 
-local function contains(table, value)
-	for _, i in pairs(table) do
-		if i == value then
-			return true
-		end
-	end
-	return false
-end
-
 -- Given 2 input stacks, tells you which is the tool and which is the material.
 -- Returns ("tool", input1, input2) if input1 is tool and input2 is material.
 -- Returns ("material", input2, input1) if input1 is material and input2 is tool.
 -- Returns nil otherwise.
+---@param input1 ItemStack
+---@param input2 ItemStack
 local function distinguish_tool_and_material(input1, input2)
 	local def1 = input1:get_definition()
 	local def2 = input2:get_definition()
 	local r1 = def1._repair_material
 	local r2 = def2._repair_material
-	if def1.type == "tool" and r1 and type(r1) == "table" and contains(r1, input2) then
+	if def1.type == "tool" and r1 and type(r1) == "table" and table.indexof(r1, input2) ~= -1 then
 		return "tool", input1, input2
-	elseif def2.type == "tool" and r2 and type(r2) == "table" and contains(r2, input1) then
+	elseif def2.type == "tool" and r2 and type(r2) == "table" and table.indexof(r1, input1) ~= -1 then
 		return "material", input2, input1
 	elseif def1.type == "tool" and r1 then
 		return "tool", input1, input2
@@ -84,7 +103,8 @@ local function distinguish_tool_and_material(input1, input2)
 	end
 end
 
--- Helper function to make sure update_anvil_slots NEVER overstacks the output slot
+---Helper function to make sure update_anvil_slots NEVER overstacks the output slot
+---@param stack ItemStack
 local function fix_stack_size(stack)
 	if not stack or stack == "" then return "" end
 	local count = stack:get_count()
@@ -99,6 +119,7 @@ end
 
 -- Update the inventory slots of an anvil node.
 -- meta: Metadata of anvil node
+---@param meta NodeMetaRef
 local function update_anvil_slots(meta)
 	local inv = meta:get_inventory()
 	local new_name = meta:get_string("set_name")
@@ -137,7 +158,7 @@ local function update_anvil_slots(meta)
 
 			name_item = input1
 			new_output = name_item
-		-- Tool + repair item
+			-- Tool + repair item
 		else
 			-- Any tool can have a repair item. This may be defined in the tool's item definition
 			-- as an itemstring in the field `_repair_material`. Only if this field is set, the
@@ -159,7 +180,7 @@ local function update_anvil_slots(meta)
 						has_correct_material = true
 					end
 				else
-					if contains(repair, material_name) then
+					if table.indexof(repair, material_name) ~= -1 then
 						has_correct_material = true
 					else
 						for _, r in pairs(repair) do
@@ -185,7 +206,7 @@ local function update_anvil_slots(meta)
 				new_output = ""
 			end
 		end
-	-- Exactly 1 input slot occupied
+		-- Exactly 1 input slot occupied
 	elseif (not input1:is_empty() and input2:is_empty()) or (input1:is_empty() and not input2:is_empty()) then
 		-- Just rename item
 		if input1:is_empty() then
@@ -231,28 +252,32 @@ local function update_anvil_slots(meta)
 	end
 end
 
--- Drop input items of anvil at pos with metadata meta
+---Drop input items of anvil at pos with metadata meta
+---@param pos Vector
+---@param meta NodeMetaRef
 local function drop_anvil_items(pos, meta)
 	local inv = meta:get_inventory()
-	for i=1, inv:get_size("input") do
+	for i = 1, inv:get_size("input") do
 		local stack = inv:get_stack("input", i)
 		if not stack:is_empty() then
-			local p = {x=pos.x+math.random(0, 10)/10-0.5, y=pos.y, z=pos.z+math.random(0, 10)/10-0.5}
+			local p = vector.offset(pos, math.random(0, 10) / 10 - 0.5, 0, math.random(0, 10) / 10 - 0.5)
 			minetest.add_item(p, stack)
 		end
 	end
 end
 
+---@param pos Vector
+---@param node node
 local function damage_particles(pos, node)
 	minetest.add_particlespawner({
 		amount = 30,
 		time = 0.1,
-		minpos = vector.add(pos, {x=-0.5, y=-0.5, z=-0.5}),
-		maxpos = vector.add(pos, {x=0.5, y=-0.25, z=0.5}),
-		minvel = {x=-0.5, y=0.05, z=-0.5},
-		maxvel = {x=0.5, y=0.3, z=0.5},
-		minacc = {x=0, y=-9.81, z=0},
-		maxacc = {x=0, y=-9.81, z=0},
+		minpos = vector.offset(pos, -0.5, -0.5, -0.5),
+		maxpos = vector.offset(pos, 0.5, -0.25, 0.5),
+		minvel = vector.new(-0.5, 0.05, -0.5),
+		maxvel = vector.new(0.5, 0.3, 0.5),
+		minacc = vector.new(0, -9.81, 0),
+		maxacc = vector.new(0, -9.81, 0),
 		minexptime = 0.1,
 		maxexptime = 0.5,
 		minsize = 0.4,
@@ -267,12 +292,12 @@ local function destroy_particles(pos, node)
 	minetest.add_particlespawner({
 		amount = math.random(20, 30),
 		time = 0.1,
-		minpos = vector.add(pos, {x=-0.4, y=-0.4, z=-0.4}),
-		maxpos = vector.add(pos, {x=0.4, y=0.4, z=0.4}),
-		minvel = {x=-0.5, y=-0.1, z=-0.5},
-		maxvel = {x=0.5, y=0.2, z=0.5},
-		minacc = {x=0, y=-9.81, z=0},
-		maxacc = {x=0, y=-9.81, z=0},
+		minpos = vector.offset(pos, -0.4, -0.4, -0.4),
+		maxpos = vector.offset(pos, 0.4, 0.4, 0.4),
+		minvel = vector.new(-0.5, -0.1, -0.5),
+		maxvel = vector.new(0.5, 0.2, 0.5),
+		minacc = vector.new(0, -9.81, 0),
+		maxacc = vector.new(0, -9.81, 0),
 		minexptime = 0.2,
 		maxexptime = 0.65,
 		minsize = 0.8,
@@ -289,28 +314,29 @@ end
 local function damage_anvil(pos)
 	local node = minetest.get_node(pos)
 	if node.name == "mcl_anvils:anvil" then
-		minetest.swap_node(pos, {name="mcl_anvils:anvil_damage_1", param2=node.param2})
+		minetest.swap_node(pos, { name = "mcl_anvils:anvil_damage_1", param2 = node.param2 })
 		damage_particles(pos, node)
-		minetest.sound_play(mcl_sounds.node_sound_metal_defaults().dig, {pos=pos, max_hear_distance=16}, true)
+		minetest.sound_play(mcl_sounds.node_sound_metal_defaults().dig, { pos = pos, max_hear_distance = 16 }, true)
 		return false
 	elseif node.name == "mcl_anvils:anvil_damage_1" then
-		minetest.swap_node(pos, {name="mcl_anvils:anvil_damage_2", param2=node.param2})
+		minetest.swap_node(pos, { name = "mcl_anvils:anvil_damage_2", param2 = node.param2 })
 		damage_particles(pos, node)
-		minetest.sound_play(mcl_sounds.node_sound_metal_defaults().dig, {pos=pos, max_hear_distance=16}, true)
+		minetest.sound_play(mcl_sounds.node_sound_metal_defaults().dig, { pos = pos, max_hear_distance = 16 }, true)
 		return false
 	elseif node.name == "mcl_anvils:anvil_damage_2" then
 		-- Destroy anvil
 		local meta = minetest.get_meta(pos)
 		drop_anvil_items(pos, meta)
-		minetest.sound_play(mcl_sounds.node_sound_metal_defaults().dug, {pos=pos, max_hear_distance=16}, true)
+		minetest.sound_play(mcl_sounds.node_sound_metal_defaults().dug, { pos = pos, max_hear_distance = 16 }, true)
 		minetest.remove_node(pos)
 		destroy_particles(pos, node)
-		minetest.check_single_for_falling({x=pos.x, y=pos.y+1, z=pos.z})
+		minetest.check_single_for_falling(vector.offset(pos, 0, 1, 0))
 		return true
 	end
 end
 
--- Roll a virtual dice and damage anvil at a low chance.
+---Roll a virtual dice and damage anvil at a low chance.
+---@param pos Vector
 local function damage_anvil_by_using(pos)
 	local r = math.random(1, 100)
 	-- 12% chance
@@ -321,25 +347,30 @@ local function damage_anvil_by_using(pos)
 	end
 end
 
+---@param pos Vector
+---@param distance number
 local function damage_anvil_by_falling(pos, distance)
 	local r = math.random(1, 100)
 	if distance > 1 then
-		if r <= (5*distance) then
+		if r <= (5 * distance) then
 			damage_anvil(pos)
 		end
 	end
 end
 
+---@type nodebox
 local anvilbox = {
 	type = "fixed",
 	fixed = {
 		{ -8 / 16, -8 / 16, -6 / 16, 8 / 16, 8 / 16, 6 / 16 },
 	},
 }
+
+---@type node_definition
 local anvildef = {
-	groups = {pickaxey=1, falling_node=1, falling_node_damage=1, crush_after_fall=1, deco_block=1, anvil=1},
-	tiles = {"mcl_anvils_anvil_top_damaged_0.png^[transformR90", "mcl_anvils_anvil_base.png", "mcl_anvils_anvil_side.png"},
-	use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "opaque" or false,
+	groups = { pickaxey = 1, falling_node = 1, falling_node_damage = 1, crush_after_fall = 1, deco_block = 1, anvil = 1 },
+	tiles = { "mcl_anvils_anvil_top_damaged_0.png^[transformR90", "mcl_anvils_anvil_base.png", "mcl_anvils_anvil_side.png" },
+	use_texture_alpha = "opaque",
 	_tt_help = S("Repair and rename items"),
 	paramtype = "light",
 	sunlight_propagates = true,
@@ -353,7 +384,7 @@ local anvildef = {
 			{ -5 / 16, -4 / 16, -4 / 16, 5 / 16, -3 / 16, 4 / 16 },
 			{ -4 / 16, -3 / 16, -2 / 16, 4 / 16, 2 / 16, 2 / 16 },
 			{ -8 / 16, 2 / 16, -5 / 16, 8 / 16, 8 / 16, 5 / 16 },
-		}
+		},
 	},
 	selection_box = anvilbox,
 	collision_box = anvilbox,
@@ -416,7 +447,7 @@ local anvildef = {
 		local meta = minetest.get_meta(pos)
 		if from_list == "output" and to_list == "input" then
 			local inv = meta:get_inventory()
-			for i=1, inv:get_size("input") do
+			for i = 1, inv:get_size("input") do
 				if i ~= to_index then
 					local istack = inv:get_stack("input", i)
 					istack:set_count(math.max(0, istack:get_count() - count))
@@ -504,22 +535,20 @@ local anvildef = {
 			minetest.record_protection_violation(pos, sender_name)
 			return
 		end
-		if fields.name_button or fields.name then
-			local set_name
-			if fields.name == nil then
-				set_name = ""
-			else
-				set_name = fields.name
-			end
+
+		if fields.name then
 			local meta = minetest.get_meta(pos)
+
 			-- Limit name length
-			set_name = string.sub(set_name, 1, MAX_NAME_LENGTH)
+			local set_name = string.sub(fields.name, 1, MAX_NAME_LENGTH)
+
 			meta:set_string("set_name", set_name)
 			update_anvil_slots(meta)
 			meta:set_string("formspec", get_anvil_formspec(set_name))
 		end
 	end,
 }
+
 if minetest.get_modpath("screwdriver") then
 	anvildef.on_rotate = screwdriver.rotate_simple
 end
@@ -527,29 +556,34 @@ end
 local anvildef0 = table.copy(anvildef)
 anvildef0.description = S("Anvil")
 anvildef0._doc_items_longdesc =
-S("The anvil allows you to repair tools and armor, and to give names to items. It has a limited durability, however. Don't let it fall on your head, it could be quite painful!")
+	S("The anvil allows you to repair tools and armor, and to give names to items. It has a limited durability, however. Don't let it fall on your head, it could be quite painful!")
 anvildef0._doc_items_usagehelp =
-S("To use an anvil, rightclick it. An anvil has 2 input slots (on the left) and one output slot.").."\n"..
-S("To rename items, put an item stack in one of the item slots while keeping the other input slot empty. Type in a name, hit enter or “Set Name”, then take the renamed item from the output slot.").."\n"..
-S("There are two possibilities to repair tools (and armor):").."\n"..
-S("• Tool + Tool: Place two tools of the same type in the input slots. The “health” of the repaired tool is the sum of the “health” of both input tools, plus a 12% bonus.").."\n"..
-S("• Tool + Material: Some tools can also be repaired by combining them with an item that it's made of. For example, iron pickaxes can be repaired with iron ingots. This repairs the tool by 25%.").."\n"..
-S("Armor counts as a tool. It is possible to repair and rename a tool in a single step.").."\n\n"..
-S("The anvil has limited durability and 3 damage levels: undamaged, slightly damaged and very damaged. Each time you repair or rename something, there is a 12% chance the anvil gets damaged. Anvils also have a chance of being damaged when they fall by more than 1 block. If a very damaged anvil is damaged again, it is destroyed.")
+	S("To use an anvil, rightclick it. An anvil has 2 input slots (on the left) and one output slot.") .. "\n" ..
+	S("To rename items, put an item stack in one of the item slots while keeping the other input slot empty. Type in a name, hit enter or “Set Name”, then take the renamed item from the output slot.")
+	.. "\n" ..
+	S("There are two possibilities to repair tools (and armor):") .. "\n" ..
+	S("• Tool + Tool: Place two tools of the same type in the input slots. The “health” of the repaired tool is the sum of the “health” of both input tools, plus a 12% bonus.")
+	.. "\n" ..
+	S("• Tool + Material: Some tools can also be repaired by combining them with an item that it's made of. For example, iron pickaxes can be repaired with iron ingots. This repairs the tool by 25%.")
+	.. "\n" ..
+	S("Armor counts as a tool. It is possible to repair and rename a tool in a single step.") .. "\n\n" ..
+	S("The anvil has limited durability and 3 damage levels: undamaged, slightly damaged and very damaged. Each time you repair or rename something, there is a 12% chance the anvil gets damaged. Anvils also have a chance of being damaged when they fall by more than 1 block. If a very damaged anvil is damaged again, it is destroyed.")
 
 local anvildef1 = table.copy(anvildef)
 anvildef1.description = S("Slightly Damaged Anvil")
 anvildef1._doc_items_create_entry = false
 anvildef1.groups.anvil = 2
 anvildef1._doc_items_create_entry = false
-anvildef1.tiles = {"mcl_anvils_anvil_top_damaged_1.png^[transformR90", "mcl_anvils_anvil_base.png", "mcl_anvils_anvil_side.png"}
+anvildef1.tiles = { "mcl_anvils_anvil_top_damaged_1.png^[transformR90", "mcl_anvils_anvil_base.png",
+	"mcl_anvils_anvil_side.png" }
 
 local anvildef2 = table.copy(anvildef)
 anvildef2.description = S("Very Damaged Anvil")
 anvildef2._doc_items_create_entry = false
 anvildef2.groups.anvil = 3
 anvildef2._doc_items_create_entry = false
-anvildef2.tiles = {"mcl_anvils_anvil_top_damaged_2.png^[transformR90", "mcl_anvils_anvil_base.png", "mcl_anvils_anvil_side.png"}
+anvildef2.tiles = { "mcl_anvils_anvil_top_damaged_2.png^[transformR90", "mcl_anvils_anvil_base.png",
+	"mcl_anvils_anvil_side.png" }
 
 minetest.register_node("mcl_anvils:anvil", anvildef0)
 minetest.register_node("mcl_anvils:anvil_damage_1", anvildef1)
@@ -562,7 +596,7 @@ if minetest.get_modpath("mcl_core") then
 			{ "mcl_core:ironblock", "mcl_core:ironblock", "mcl_core:ironblock" },
 			{ "", "mcl_core:iron_ingot", "" },
 			{ "mcl_core:iron_ingot", "mcl_core:iron_ingot", "mcl_core:iron_ingot" },
-		}
+		},
 	})
 end
 

mods/ITEMS/mcl_barrels/init.lua

@@ -8,6 +8,7 @@ local open_barrels = {}
 
 local drop_content = mcl_util.drop_items_from_meta_container("main")
 
+---@param pos Vector
 local function on_blast(pos)
 	local node = minetest.get_node(pos)
 	drop_content(pos, node)
@@ -45,30 +46,34 @@ local function barrel_open(pos, node, clicker)
 	local playername = clicker:get_player_name()
 
 	minetest.show_formspec(playername,
-		"mcl_barrels:barrel_"..pos.x.."_"..pos.y.."_"..pos.z,
+		"mcl_barrels:barrel_" .. pos.x .. "_" .. pos.y .. "_" .. pos.z,
 		table.concat({
-			"size[9,8.75]",
-			"label[0,0;"..F(C("#313131", name)).."]",
-			"list[nodemeta:"..pos.x..","..pos.y..","..pos.z..";main;0,0.5;9,3;]",
-			mcl_formspec.get_itemslot_bg(0, 0.5, 9, 3),
-			"label[0,4.0;"..F(C("#313131", S("Inventory"))).."]",
-			"list[current_player;main;0,4.5;9,3;9]",
-			mcl_formspec.get_itemslot_bg(0, 4.5, 9, 3),
-			"list[current_player;main;0,7.74;9,1;]",
-			mcl_formspec.get_itemslot_bg(0, 7.74, 9, 1),
-			"listring[nodemeta:"..pos.x..","..pos.y..","..pos.z..";main]",
+			"formspec_version[4]",
+			"size[11.75,10.425]",
+
+			"label[0.375,0.375;" .. F(C(mcl_formspec.label_color, name)) .. "]",
+			mcl_formspec.get_itemslot_bg_v4(0.375, 0.75, 9, 3),
+			"list[nodemeta:" .. pos.x .. "," .. pos.y .. "," .. pos.z .. ";main;0.375,0.75;9,3;]",
+			"label[0.375,4.7;" .. F(C(mcl_formspec.label_color, S("Inventory"))) .. "]",
+			mcl_formspec.get_itemslot_bg_v4(0.375, 5.1, 9, 3),
+			"list[current_player;main;0.375,5.1;9,3;9]",
+
+			mcl_formspec.get_itemslot_bg_v4(0.375, 9.05, 9, 1),
+			"list[current_player;main;0.375,9.05;9,1;]",
+			"listring[nodemeta:" .. pos.x .. "," .. pos.y .. "," .. pos.z .. ";main]",
 			"listring[current_player;main]",
 		})
 	)
 
-	minetest.swap_node(pos,	{ name = "mcl_barrels:barrel_open", param2 = node.param2 })
+	minetest.swap_node(pos, { name = "mcl_barrels:barrel_open", param2 = node.param2 })
 	open_barrels[playername] = pos
-	minetest.sound_play({name="mcl_barrels_default_barrel_open", pos=pos, gain=0.5, max_hear_distance=16}, true)
+	minetest.sound_play({ name = "mcl_barrels_default_barrel_open", pos = pos, gain = 0.5, max_hear_distance = 16 }, true)
 end
 
+---@param pos Vector
 local function close_forms(pos)
 	local players = minetest.get_connected_players()
-	local formname = "mcl_barrels:barrel_"..pos.x.."_"..pos.y.."_"..pos.z
+	local formname = "mcl_barrels:barrel_" .. pos.x .. "_" .. pos.y .. "_" .. pos.z
 	for p = 1, #players do
 		if vector.distance(players[p]:get_pos(), pos) <= 30 then
 			minetest.close_formspec(players[p]:get_player_name(), formname)
@@ -76,15 +81,18 @@ local function close_forms(pos)
 	end
 end
 
+---@param pos Vector
 local function update_after_close(pos)
 	local node = minetest.get_node_or_nil(pos)
 	if not node then return end
 	if node.name == "mcl_barrels:barrel_open" then
-		minetest.swap_node(pos, {name = "mcl_barrels:barrel_closed", param2 = node.param2})
-		minetest.sound_play({name="mcl_barrels_default_barrel_close", pos=pos, gain=0.5, max_hear_distance=16}, true)
+		minetest.swap_node(pos, { name = "mcl_barrels:barrel_closed", param2 = node.param2 })
+		minetest.sound_play({ name = "mcl_barrels_default_barrel_close", pos = pos, gain = 0.5, max_hear_distance = 16 },
+			true)
 	end
 end
 
+---@param player ObjectRef
 local function close_barrel(player)
 	local name = player:get_player_name()
 	local open = open_barrels[name]
@@ -102,20 +110,22 @@ minetest.register_node("mcl_barrels:barrel_closed", {
 	_tt_help = S("27 inventory slots"),
 	_doc_items_longdesc = S("Barrels are containers which provide 27 inventory slots."),
 	_doc_items_usagehelp = S("To access its inventory, rightclick it. When broken, the items will drop out."),
-	tiles = {"mcl_barrels_barrel_top.png^[transformR270", "mcl_barrels_barrel_bottom.png", "mcl_barrels_barrel_side.png"},
+	tiles = { "mcl_barrels_barrel_top.png^[transformR270", "mcl_barrels_barrel_bottom.png", "mcl_barrels_barrel_side.png" },
 	paramtype = "light",
 	paramtype2 = "facedir",
 	on_place = function(itemstack, placer, pointed_thing)
-		minetest.rotate_and_place(itemstack, placer, pointed_thing, minetest.is_creative_enabled(placer:get_player_name()), {}, false)
+		minetest.rotate_and_place(itemstack, placer, pointed_thing,
+			minetest.is_creative_enabled(placer:get_player_name()), {}
+			, false)
 		return itemstack
 	end,
 	stack_max = 64,
 	sounds = mcl_sounds.node_sound_wood_defaults(),
-	groups = {handy = 1, axey = 1, container = 2, material_wood = 1, flammable = -1, deco_block = 1},
+	groups = { handy = 1, axey = 1, container = 2, material_wood = 1, flammable = -1, deco_block = 1 },
 	on_construct = function(pos)
 		local meta = minetest.get_meta(pos)
 		local inv = meta:get_inventory()
-		inv:set_size("main", 9*3)
+		inv:set_size("main", 9 * 3)
 	end,
 	after_place_node = function(pos, placer, itemstack, pointed_thing)
 		minetest.get_meta(pos):set_string("name", itemstack:get_meta():get_string("name"))
@@ -124,16 +134,16 @@ minetest.register_node("mcl_barrels:barrel_closed", {
 	allow_metadata_inventory_take = protection_check_put_take,
 	allow_metadata_inventory_put = protection_check_put_take,
 	on_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
-		minetest.log("action", player:get_player_name()..
-			" moves stuff in barrel at "..minetest.pos_to_string(pos))
+		minetest.log("action", player:get_player_name() ..
+			" moves stuff in barrel at " .. minetest.pos_to_string(pos))
 	end,
 	on_metadata_inventory_put = function(pos, listname, index, stack, player)
-		minetest.log("action", player:get_player_name()..
-			" moves stuff to barrel at "..minetest.pos_to_string(pos))
+		minetest.log("action", player:get_player_name() ..
+			" moves stuff to barrel at " .. minetest.pos_to_string(pos))
 	end,
 	on_metadata_inventory_take = function(pos, listname, index, stack, player)
-		minetest.log("action", player:get_player_name()..
-			" takes stuff from barrel at "..minetest.pos_to_string(pos))
+		minetest.log("action", player:get_player_name() ..
+			" takes stuff from barrel at " .. minetest.pos_to_string(pos))
 	end,
 	after_dig_node = drop_content,
 	on_blast = on_blast,
@@ -149,27 +159,35 @@ minetest.register_node("mcl_barrels:barrel_open", {
 	_doc_items_longdesc = S("Barrels are containers which provide 27 inventory slots."),
 	_doc_items_usagehelp = S("To access its inventory, rightclick it. When broken, the items will drop out."),
 	_doc_items_create_entry = false,
-	tiles = {"mcl_barrels_barrel_top_open.png", "mcl_barrels_barrel_bottom.png", "mcl_barrels_barrel_side.png"},
+	tiles = { "mcl_barrels_barrel_top_open.png", "mcl_barrels_barrel_bottom.png", "mcl_barrels_barrel_side.png" },
 	paramtype = "light",
 	paramtype2 = "facedir",
 	drop = "mcl_barrels:barrel_closed",
 	stack_max = 64,
 	sounds = mcl_sounds.node_sound_wood_defaults(),
-	groups = {handy = 1, axey = 1, container = 2, material_wood = 1, flammable = -1, deco_block = 1, not_in_creative_inventory = 1},
+	groups = {
+		handy = 1,
+		axey = 1,
+		container = 2,
+		material_wood = 1,
+		flammable = -1,
+		deco_block = 1,
+		not_in_creative_inventory = 1
+	},
 	allow_metadata_inventory_move = protection_check_move,
 	allow_metadata_inventory_take = protection_check_put_take,
 	allow_metadata_inventory_put = protection_check_put_take,
 	on_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
-		minetest.log("action", player:get_player_name()..
-			" moves stuff in barrel at "..minetest.pos_to_string(pos))
+		minetest.log("action", player:get_player_name() ..
+			" moves stuff in barrel at " .. minetest.pos_to_string(pos))
 	end,
 	on_metadata_inventory_put = function(pos, listname, index, stack, player)
-		minetest.log("action", player:get_player_name()..
-			" moves stuff to barrel at "..minetest.pos_to_string(pos))
+		minetest.log("action", player:get_player_name() ..
+			" moves stuff to barrel at " .. minetest.pos_to_string(pos))
 	end,
 	on_metadata_inventory_take = function(pos, listname, index, stack, player)
-		minetest.log("action", player:get_player_name()..
-			" takes stuff from barrel at "..minetest.pos_to_string(pos))
+		minetest.log("action", player:get_player_name() ..
+			" takes stuff from barrel at " .. minetest.pos_to_string(pos))
 	end,
 	after_dig_node = drop_content,
 	on_blast = on_blast,
@@ -193,10 +211,10 @@ end)
 minetest.register_craft({
 	output = "mcl_barrels:barrel_closed",
 	recipe = {
-		{"group:wood", "group:wood_slab", "group:wood"},
-		{"group:wood", "",                "group:wood"},
-		{"group:wood", "group:wood_slab", "group:wood"},
-	}
+		{ "group:wood", "group:wood_slab", "group:wood" },
+		{ "group:wood", "",                "group:wood" },
+		{ "group:wood", "group:wood_slab", "group:wood" },
+	},
 })
 
 minetest.register_craft({

mods/ITEMS/mcl_blast_furnace/init.lua

@@ -1,5 +1,6 @@
-
 local S = minetest.get_translator(minetest.get_current_modname())
+local C = minetest.colorize
+local F = minetest.formspec_escape
 
 local LIGHT_ACTIVE_FURNACE = 13
 
@@ -8,60 +9,82 @@ local LIGHT_ACTIVE_FURNACE = 13
 --
 
 local function active_formspec(fuel_percent, item_percent)
-	return "size[9,8.75]"..
-	"label[0,4;"..minetest.formspec_escape(minetest.colorize("#313131", S("Inventory"))).."]"..
-	"list[current_player;main;0,4.5;9,3;9]"..
-	mcl_formspec.get_itemslot_bg(0,4.5,9,3)..
-	"list[current_player;main;0,7.74;9,1;]"..
-	mcl_formspec.get_itemslot_bg(0,7.74,9,1)..
-	"label[2.75,0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Blast Furnace"))).."]"..
-	"list[context;src;2.75,0.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(2.75,0.5,1,1)..
-	"list[context;fuel;2.75,2.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(2.75,2.5,1,1)..
-	"list[context;dst;5.75,1.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(5.75,1.5,1,1)..
-	"image[2.75,1.5;1,1;default_furnace_fire_bg.png^[lowpart:"..
-	(100-fuel_percent)..":default_furnace_fire_fg.png]"..
-	"image[4.1,1.5;1.5,1;gui_furnace_arrow_bg.png^[lowpart:"..
-	(item_percent)..":gui_furnace_arrow_fg.png^[transformR270]"..
-	-- Craft guide button temporarily removed due to Minetest bug.
-	-- TODO: Add it back when the Minetest bug is fixed.
-	--"image_button[8,0;1,1;craftguide_book.png;craftguide;]"..
-	--"tooltip[craftguide;"..minetest.formspec_escape(S("Recipe book")).."]"..
-	"listring[context;dst]"..
-	"listring[current_player;main]"..
-	"listring[context;src]"..
-	"listring[current_player;main]"..
-	"listring[context;fuel]"..
-	"listring[current_player;main]"
+	return table.concat({
+		"formspec_version[4]",
+		"size[11.75,10.425]",
+		"label[0.375,0.375;" .. F(C(mcl_formspec.label_color, S("Blast Furnace"))) .. "]",
+		mcl_formspec.get_itemslot_bg_v4(3.5, 0.75, 1, 1),
+		"list[context;src;3.5,0.75;1,1;]",
+
+		"image[3.5,2;1,1;default_furnace_fire_bg.png^[lowpart:" ..
+		(100 - fuel_percent) .. ":default_furnace_fire_fg.png]",
+
+		mcl_formspec.get_itemslot_bg_v4(3.5, 3.25, 1, 1),
+		"list[context;fuel;3.5,3.25;1,1;]",
+
+		"image[5.25,2;1.5,1;gui_furnace_arrow_bg.png^[lowpart:" ..
+		(item_percent) .. ":gui_furnace_arrow_fg.png^[transformR270]",
+		mcl_formspec.get_itemslot_bg_v4(7.875, 2, 1, 1, 0.2),
+		"list[context;dst;7.875,2;1,1;]",
+
+		"label[0.375,4.7;" .. F(C(mcl_formspec.label_color, S("Inventory"))) .. "]",
+		mcl_formspec.get_itemslot_bg_v4(0.375, 5.1, 9, 3),
+		"list[current_player;main;0.375,5.1;9,3;9]",
+
+		mcl_formspec.get_itemslot_bg_v4(0.375, 9.05, 9, 1),
+		"list[current_player;main;0.375,9.05;9,1;]",
+
+		-- Craft guide button temporarily removed due to Minetest bug.
+		-- TODO: Add it back when the Minetest bug is fixed.
+		--"image_button[8,0;1,1;craftguide_book.png;craftguide;]"..
+		--"tooltip[craftguide;"..minetest.formspec_escape(S("Recipe book")).."]"..
+
+		"listring[context;dst]",
+		"listring[current_player;main]",
+		"listring[context;src]",
+		"listring[current_player;main]",
+		"listring[context;fuel]",
+		"listring[current_player;main]",
+	})
 end
 
-local inactive_formspec = "size[9,8.75]"..
-	"label[0,4;"..minetest.formspec_escape(minetest.colorize("#313131", S("Inventory"))).."]"..
-	"list[current_player;main;0,4.5;9,3;9]"..
-	mcl_formspec.get_itemslot_bg(0,4.5,9,3)..
-	"list[current_player;main;0,7.74;9,1;]"..
-	mcl_formspec.get_itemslot_bg(0,7.74,9,1)..
-	"label[2.75,0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Blast Furnace"))).."]"..
-	"list[context;src;2.75,0.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(2.75,0.5,1,1)..
-	"list[context;fuel;2.75,2.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(2.75,2.5,1,1)..
-	"list[context;dst;5.75,1.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(5.75,1.5,1,1)..
-	"image[2.75,1.5;1,1;default_furnace_fire_bg.png]"..
-	"image[4.1,1.5;1.5,1;gui_furnace_arrow_bg.png^[transformR270]"..
+local inactive_formspec = table.concat({
+	"formspec_version[4]",
+	"size[11.75,10.425]",
+	"label[0.375,0.375;" .. F(C(mcl_formspec.label_color, S("Blast Furnace"))) .. "]",
+	mcl_formspec.get_itemslot_bg_v4(3.5, 0.75, 1, 1),
+	"list[context;src;3.5,0.75;1,1;]",
+
+	"image[3.5,2;1,1;default_furnace_fire_bg.png]",
+
+	mcl_formspec.get_itemslot_bg_v4(3.5, 3.25, 1, 1),
+	"list[context;fuel;3.5,3.25;1,1;]",
+
+	"image[5.25,2;1.5,1;gui_furnace_arrow_bg.png^[transformR270]",
+
+	mcl_formspec.get_itemslot_bg_v4(7.875, 2, 1, 1, 0.2),
+	"list[context;dst;7.875,2;1,1;]",
+
+	"label[0.375,4.7;" .. F(C(mcl_formspec.label_color, S("Inventory"))) .. "]",
+	mcl_formspec.get_itemslot_bg_v4(0.375, 5.1, 9, 3),
+	"list[current_player;main;0.375,5.1;9,3;9]",
+
+	mcl_formspec.get_itemslot_bg_v4(0.375, 9.05, 9, 1),
+	"list[current_player;main;0.375,9.05;9,1;]",
+
 	-- Craft guide button temporarily removed due to Minetest bug.
 	-- TODO: Add it back when the Minetest bug is fixed.
 	--"image_button[8,0;1,1;craftguide_book.png;craftguide;]"..
 	--"tooltip[craftguide;"..minetest.formspec_escape(S("Recipe book")).."]"..
-	"listring[context;dst]"..
-	"listring[current_player;main]"..
-	"listring[context;src]"..
-	"listring[current_player;main]"..
-	"listring[context;fuel]"..
-	"listring[current_player;main]"
+
+	"listring[context;dst]",
+	"listring[current_player;main]",
+	"listring[context;src]",
+	"listring[current_player;main]",
+	"listring[context;fuel]",
+	"listring[current_player;main]",
+})
+
 
 local receive_fields = function(pos, formname, fields, sender)
 	if fields.craftguide then
@@ -71,7 +94,7 @@ end
 
 local function give_xp(pos, player)
 	local meta = minetest.get_meta(pos)
-	local dir = vector.divide(minetest.facedir_to_dir(minetest.get_node(pos).param2),-1.95)
+	local dir = vector.divide(minetest.facedir_to_dir(minetest.get_node(pos).param2), -1.95)
 	local xp = meta:get_int("xp")
 	if xp > 0 then
 		if player then
@@ -99,7 +122,7 @@ local function allow_metadata_inventory_put(pos, listname, index, stack, player)
 		-- Test stack with size 1 because we burn one fuel at a time
 		local teststack = ItemStack(stack)
 		teststack:set_count(1)
-		local output, decremented_input = minetest.get_craft_result({method="fuel", width=1, items={teststack}})
+		local output, decremented_input = minetest.get_craft_result({ method = "fuel", width = 1, items = { teststack } })
 		if output.time ~= 0 then
 			-- Only allow to place 1 item if fuel get replaced by recipe.
 			-- This is the case for lava buckets.
@@ -160,17 +183,17 @@ local function spawn_flames(pos, param2)
 	local minrelpos, maxrelpos
 	local dir = minetest.facedir_to_dir(param2)
 	if dir.x > 0 then
-		minrelpos = { x = -0.6, y = -0.05, z = -0.25 }
-		maxrelpos = { x = -0.55, y = -0.45, z = 0.25 }
+		minrelpos = vector.new(-0.6, -0.05, -0.25)
+		maxrelpos = vector.new(-0.55, -0.45, 0.25)
 	elseif dir.x < 0 then
-		minrelpos = { x = 0.55, y = -0.05, z = -0.25 }
-		maxrelpos = { x = 0.6, y = -0.45, z = 0.25 }
+		minrelpos = vector.new(0.55, -0.05, -0.25)
+		maxrelpos = vector.new(0.6, -0.45, 0.25)
 	elseif dir.z > 0 then
-		minrelpos = { x = -0.25, y = -0.05, z = -0.6 }
-		maxrelpos = { x = 0.25, y = -0.45, z = -0.55 }
+		minrelpos = vector.new(-0.25, -0.05, -0.6)
+		maxrelpos = vector.new(0.25, 0.45, -0.55)
 	elseif dir.z < 0 then
-		minrelpos = { x = -0.25, y = -0.05, z = 0.55 }
-		maxrelpos = { x = 0.25, y = -0.45, z = 0.6 }
+		minrelpos = vector.new(-0.25, -0.05, 0.55)
+		maxrelpos = vector.new(0.25, -0.45, 0.6)
 	else
 		return
 	end
@@ -179,8 +202,8 @@ local function spawn_flames(pos, param2)
 		time = 0,
 		minpos = vector.add(pos, minrelpos),
 		maxpos = vector.add(pos, maxrelpos),
-		minvel = { x = -0.01, y = 0, z = -0.01 },
-		maxvel = { x = 0.01, y = 0.1, z = 0.01 },
+		minvel = vector.new(-0.01, 0, -0.01),
+		maxvel = vector.new(0.01, 0.1, 0.01),
 		minexptime = 0.3,
 		maxexptime = 0.6,
 		minsize = 0.4,
@@ -293,7 +316,7 @@ local function blast_furnace_node_timer(pos, elapsed)
 
 		-- Check if we have cookable content: cookable
 		local aftercooked
-		cooked, aftercooked = minetest.get_craft_result({method = "cooking", width = 1, items = srclist})
+		cooked, aftercooked = minetest.get_craft_result({ method = "cooking", width = 1, items = srclist })
 		cookable = minetest.get_item_group(inv:get_stack("src", 1):get_name(), "blast_furnace_smeltable") == 1
 		if cookable then
 			-- Successful cooking requires space in dst slot and time
@@ -311,7 +334,7 @@ local function blast_furnace_node_timer(pos, elapsed)
 		if cookable and not active then
 			-- We need to get new fuel
 			local afterfuel
-			fuel, afterfuel = minetest.get_craft_result({method = "fuel", width = 1, items = fuellist})
+			fuel, afterfuel = minetest.get_craft_result({ method = "fuel", width = 1, items = fuellist })
 
 			if fuel.time == 0 then
 				-- No valid fuel in fuel list -- stop
@@ -343,7 +366,7 @@ local function blast_furnace_node_timer(pos, elapsed)
 				srclist = inv:get_list("src")
 				src_time = 0
 
-				meta:set_int("xp", meta:get_int("xp") + 1)		-- ToDo give each recipe an idividial XP count
+				meta:set_int("xp", meta:get_int("xp") + 1) -- ToDo give each recipe an idividial XP count
 			end
 		end
 
@@ -390,9 +413,9 @@ local function blast_furnace_node_timer(pos, elapsed)
 	meta:set_float("fuel_time", fuel_time)
 	meta:set_float("src_time", src_time)
 	if srclist then
-		 meta:set_string("src_item", src_item)
+		meta:set_string("src_item", src_item)
 	else
-		 meta:set_string("src_item", "")
+		meta:set_string("src_item", "")
 	end
 	meta:set_string("formspec", formspec)
 
@@ -415,13 +438,14 @@ end
 minetest.register_node("mcl_blast_furnace:blast_furnace", {
 	description = S("Blast Furnace"),
 	_tt_help = S("Smelts ores faster than furnace"),
-	_doc_items_longdesc = S("Blast Furnaces smelt several items, mainly ores and armor, using a furnace fuel, but twice as fast as a normal furnace."),
+	_doc_items_longdesc = S(
+		"Blast Furnaces smelt several items, mainly ores and armor, using a furnace fuel, but twice as fast as a normal furnace."),
 	_doc_items_usagehelp =
-			S("Use the blast furnace to open the furnace menu.").."\n"..
-            S("Place a furnace fuel in the lower slot and the source material in the upper slot.").."\n"..
-			S("The blast furnace will slowly use its fuel to smelt the item.").."\n"..
-			S("The result will be placed into the output slot at the right side.").."\n"..
-			S("Use the recipe book to see what ores you can smelt, what you can use as fuel and how long it will burn."),
+		S("Use the blast furnace to open the furnace menu.") .. "\n" ..
+		S("Place a furnace fuel in the lower slot and the source material in the upper slot.") .. "\n" ..
+		S("The blast furnace will slowly use its fuel to smelt the item.") .. "\n" ..
+		S("The result will be placed into the output slot at the right side.") .. "\n" ..
+		S("Use the recipe book to see what ores you can smelt, what you can use as fuel and how long it will burn."),
 	_doc_items_hidden = false,
 	tiles = {
 		"blast_furnace_top.png", "blast_furnace_top.png",
@@ -429,7 +453,7 @@ minetest.register_node("mcl_blast_furnace:blast_furnace", {
 		"blast_furnace_side.png", "blast_furnace_front.png"
 	},
 	paramtype2 = "facedir",
-	groups = {pickaxey=1, container=4, deco_block=1, material_stone=1},
+	groups = { pickaxey = 1, container = 4, deco_block = 1, material_stone = 1 },
 	is_ground_content = false,
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 
@@ -439,11 +463,10 @@ minetest.register_node("mcl_blast_furnace:blast_furnace", {
 		local meta2 = meta:to_table()
 		meta:from_table(oldmetadata)
 		local inv = meta:get_inventory()
-		for _, listname in ipairs({"src", "dst", "fuel"}) do
+		for _, listname in ipairs({ "src", "dst", "fuel" }) do
 			local stack = inv:get_stack(listname, 1)
 			if not stack:is_empty() then
-				local p = {x=pos.x+math.random(0, 10)/10-0.5, y=pos.y, z=pos.z+math.random(0, 10)/10-0.5}
-				minetest.add_item(p, stack)
+				minetest.add_item(vector.offset(pos, math.random(0, 10) / 10 - 0.5, 0, math.random(0, 10) / 10 - 0.5), stack)
 			end
 		end
 		meta:from_table(meta2)
@@ -499,14 +522,16 @@ minetest.register_node("mcl_blast_furnace:blast_furnace_active", {
 	tiles = {
 		"blast_furnace_top.png", "blast_furnace_top.png",
 		"blast_furnace_side.png", "blast_furnace_side.png",
-		"blast_furnace_side.png", {name = "blast_furnace_front_on.png",
-				animation = {type = "vertical_frames", aspect_w = 16, aspect_h = 16, length = 48}},
+		"blast_furnace_side.png", {
+		name = "blast_furnace_front_on.png",
+		animation = { type = "vertical_frames", aspect_w = 16, aspect_h = 16, length = 48 }
+	},
 	},
 	paramtype2 = "facedir",
 	paramtype = "light",
 	light_source = LIGHT_ACTIVE_FURNACE,
 	drop = "mcl_blast_furnace:blast_furnace",
-	groups = {pickaxey=1, container=4, deco_block=1, not_in_creative_inventory=1, material_stone=1},
+	groups = { pickaxey = 1, container = 4, deco_block = 1, not_in_creative_inventory = 1, material_stone = 1 },
 	is_ground_content = false,
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 	on_timer = blast_furnace_node_timer,
@@ -516,10 +541,14 @@ minetest.register_node("mcl_blast_furnace:blast_furnace_active", {
 		local meta2 = meta
 		meta:from_table(oldmetadata)
 		local inv = meta:get_inventory()
-		for _, listname in ipairs({"src", "dst", "fuel"}) do
+		for _, listname in ipairs({ "src", "dst", "fuel" }) do
 			local stack = inv:get_stack(listname, 1)
 			if not stack:is_empty() then
-				local p = {x=pos.x+math.random(0, 10)/10-0.5, y=pos.y, z=pos.z+math.random(0, 10)/10-0.5}
+				local p = vector.new(
+					pos.x + math.random(0, 10) / 10 - 0.5,
+					pos.y,
+					pos.z + math.random(0, 10) / 10 - 0.5
+				)
 				minetest.add_item(p, stack)
 			end
 		end
@@ -550,8 +579,8 @@ minetest.register_node("mcl_blast_furnace:blast_furnace_active", {
 minetest.register_craft({
 	output = "mcl_blast_furnace:blast_furnace",
 	recipe = {
-		{ "mcl_core:iron_ingot", "mcl_core:iron_ingot", "mcl_core:iron_ingot" },
-		{ "mcl_core:iron_ingot", "mcl_furnaces:furnace", "mcl_core:iron_ingot" },
+		{ "mcl_core:iron_ingot",   "mcl_core:iron_ingot",   "mcl_core:iron_ingot" },
+		{ "mcl_core:iron_ingot",   "mcl_furnaces:furnace",  "mcl_core:iron_ingot" },
 		{ "mcl_core:stone_smooth", "mcl_core:stone_smooth", "mcl_core:stone_smooth" },
 	}
 })
@@ -564,10 +593,9 @@ end
 minetest.register_lbm({
 	label = "Active blast_furnace flame particles",
 	name = "mcl_blast_furnace:flames",
-	nodenames = {"mcl_blast_furnace:blast_furnace_active"},
+	nodenames = { "mcl_blast_furnace:blast_furnace_active" },
 	run_at_every_load = true,
 	action = function(pos, node)
 		spawn_flames(pos, node.param2)
 	end,
 })
-

mods/ITEMS/mcl_books/init.lua

@@ -5,7 +5,7 @@ local C = minetest.colorize
 local max_text_length = 4500 -- TODO: Increase to 12800 when scroll bar was added to written book
 local max_title_length = 64
 
-local bookshelf_inv = minetest.settings:get_bool("mcl_bookshelf_inventories",true)
+local bookshelf_inv = minetest.settings:get_bool("mcl_bookshelf_inventories", true)
 
 local header = ""
 if minetest.get_modpath("mcl_init") then
@@ -19,7 +19,7 @@ minetest.register_craftitem("mcl_books:book", {
 	_doc_items_longdesc = S("Books are used to make bookshelves and book and quills."),
 	inventory_image = "default_book.png",
 	stack_max = 64,
-	groups = { book=1, craftitem = 1, enchantability = 1 },
+	groups = { book = 1, craftitem = 1, enchantability = 1 },
 	_mcl_enchanting_enchanted_tool = "mcl_enchanting:book_enchanted",
 })
 
@@ -85,18 +85,19 @@ local function write(itemstack, user, pointed_thing)
 		local node = minetest.get_node(pointed_thing.under)
 		if user and not user:get_player_control().sneak then
 			if minetest.registered_nodes[node.name] and minetest.registered_nodes[node.name].on_rightclick then
-				return minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, user, itemstack) or itemstack
+				return minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, user, itemstack) or
+					itemstack
 			end
 		end
 	end
 
 	local text = get_text(itemstack)
-	local formspec = "size[8,9]"..
-		header..
-		"background[-0.5,-0.5;9,10;mcl_books_book_bg.png]"..
-		"textarea[0.75,0.1;7.25,9;text;;"..minetest.formspec_escape(text).."]"..
-		"button[0.75,7.95;3,1;sign;"..minetest.formspec_escape(S("Sign")).."]"..
-		"button_exit[4.25,7.95;3,1;ok;"..minetest.formspec_escape(S("Done")).."]"
+	local formspec = "size[8,9]" ..
+		header ..
+		"background[-0.5,-0.5;9,10;mcl_books_book_bg.png]" ..
+		"textarea[0.75,0.1;7.25,9;text;;" .. minetest.formspec_escape(text) .. "]" ..
+		"button[0.75,7.95;3,1;sign;" .. minetest.formspec_escape(S("Sign")) .. "]" ..
+		"button_exit[4.25,7.95;3,1;ok;" .. minetest.formspec_escape(S("Done")) .. "]"
 	minetest.show_formspec(user:get_player_name(), "mcl_books:writable_book", formspec)
 end
 
@@ -106,17 +107,18 @@ local function read(itemstack, user, pointed_thing)
 		local node = minetest.get_node(pointed_thing.under)
 		if user and not user:get_player_control().sneak then
 			if minetest.registered_nodes[node.name] and minetest.registered_nodes[node.name].on_rightclick then
-				return minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, user, itemstack) or itemstack
+				return minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, user, itemstack) or
+					itemstack
 			end
 		end
 	end
 
 	local text = get_text(itemstack)
-	local formspec = "size[8,9]"..
-		header..
-		"background[-0.5,-0.5;9,10;mcl_books_book_bg.png]"..
-		"textarea[0.75,0.1;7.25,9;;"..minetest.formspec_escape(text)..";]"..
-		"button_exit[2.25,7.95;3,1;ok;"..minetest.formspec_escape(S("Done")).."]"
+	local formspec = "size[8,9]" ..
+		header ..
+		"background[-0.5,-0.5;9,10;mcl_books_book_bg.png]" ..
+		"textarea[0.75,0.1;7.25,9;;" .. minetest.formspec_escape(text) .. ";]" ..
+		"button_exit[2.25,7.95;3,1;ok;" .. minetest.formspec_escape(S("Done")) .. "]"
 	minetest.show_formspec(user:get_player_name(), "mcl_books:written_book", formspec)
 end
 
@@ -125,16 +127,18 @@ minetest.register_craftitem("mcl_books:writable_book", {
 	description = S("Book and Quill"),
 	_tt_help = S("Write down some notes"),
 	_doc_items_longdesc = S("This item can be used to write down some notes."),
-	_doc_items_usagehelp = S("Hold it in the hand, then rightclick to read the current notes and edit then. You can edit the text as often as you like. You can also sign the book which turns it into a written book which you can stack, but it can't be edited anymore.").."\n"..
-	S("A book can hold up to 4500 characters. The title length is limited to 64 characters."),
+	_doc_items_usagehelp = S(
+			"Hold it in the hand, then rightclick to read the current notes and edit then. You can edit the text as often as you like. You can also sign the book which turns it into a written book which you can stack, but it can't be edited anymore.")
+		.. "\n" ..
+		S("A book can hold up to 4500 characters. The title length is limited to 64 characters."),
 	inventory_image = "mcl_books_book_writable.png",
-	groups = { book=1 },
+	groups = { book = 1 },
 	stack_max = 1,
 	on_place = write,
 	on_secondary_use = write,
 })
 
-minetest.register_on_player_receive_fields(function ( player, formname, fields )
+minetest.register_on_player_receive_fields(function(player, formname, fields)
 	if ((formname == "mcl_books:writable_book") and fields and fields.text) then
 		local stack = player:get_wielded_item()
 		if (stack:get_name() and (stack:get_name() == "mcl_books:writable_book")) then
@@ -148,14 +152,17 @@ minetest.register_on_player_receive_fields(function ( player, formname, fields )
 				player:set_wielded_item(stack)
 
 				local name = player:get_player_name()
-				local formspec = "size[8,9]"..
-					header..
-					"background[-0.5,-0.5;9,10;mcl_books_book_bg.png]"..
-					"field[0.75,1;7.25,1;title;"..minetest.formspec_escape(minetest.colorize("#000000", S("Enter book title:")))..";]"..
-					"label[0.75,1.5;"..minetest.formspec_escape(minetest.colorize("#404040", S("by @1", name))).."]"..
-					"button_exit[0.75,7.95;3,1;sign;"..minetest.formspec_escape(S("Sign and Close")).."]"..
-					"tooltip[sign;"..minetest.formspec_escape(S("Note: The book will no longer be editable after signing")).."]"..
-					"button[4.25,7.95;3,1;cancel;"..minetest.formspec_escape(S("Cancel")).."]"
+				local formspec = "size[8,9]" ..
+					header ..
+					"background[-0.5,-0.5;9,10;mcl_books_book_bg.png]" ..
+					"field[0.75,1;7.25,1;title;" ..
+					minetest.formspec_escape(minetest.colorize("#000000", S("Enter book title:"))) .. ";]" ..
+					"label[0.75,1.5;" ..
+					minetest.formspec_escape(minetest.colorize("#404040", S("by @1", name))) .. "]" ..
+					"button_exit[0.75,7.95;3,1;sign;" .. minetest.formspec_escape(S("Sign and Close")) .. "]" ..
+					"tooltip[sign;" ..
+					minetest.formspec_escape(S("Note: The book will no longer be editable after signing")) .. "]" ..
+					"button[4.25,7.95;3,1;cancel;" .. minetest.formspec_escape(S("Cancel")) .. "]"
 				minetest.show_formspec(player:get_player_name(), "mcl_books:signing", formspec)
 			end
 		end
@@ -181,7 +188,7 @@ minetest.register_on_player_receive_fields(function ( player, formname, fields )
 
 			player:set_wielded_item(newbook)
 		else
-			minetest.log("error", "[mcl_books] "..name.." failed to sign a book!")
+			minetest.log("error", "[mcl_books] " .. name .. " failed to sign a book!")
 		end
 	elseif ((formname == "mcl_books:signing") and fields and fields.cancel) then
 		local book = player:get_wielded_item()
@@ -202,12 +209,16 @@ end
 -- Written Book
 minetest.register_craftitem("mcl_books:written_book", {
 	description = S("Written Book"),
-	_doc_items_longdesc = S("Written books contain some text written by someone. They can be read and copied, but not edited."),
-	_doc_items_usagehelp = S("Hold it in your hand, then rightclick to read the book.").."\n\n"..
-
-S("To copy the text of the written book, place it into the crafting grid together with a book and quill (or multiple of those) and craft. The written book will not be consumed. Copies of copies can not be copied."),
+	_doc_items_longdesc = S(
+		"Written books contain some text written by someone. They can be read and copied, but not edited."
+	),
+	_doc_items_usagehelp = S("Hold it in your hand, then rightclick to read the book.") ..
+		"\n\n" ..
+		S(
+			"To copy the text of the written book, place it into the crafting grid together with a book and quill (or multiple of those) and craft. The written book will not be consumed. Copies of copies can not be copied."
+		),
 	inventory_image = "mcl_books_book_written.png",
-	groups = { not_in_creative_inventory=1, book=1, no_rename=1 },
+	groups = { not_in_creative_inventory = 1, book = 1, no_rename = 1 },
 	stack_max = 16,
 	on_place = read,
 	on_secondary_use = read
@@ -219,19 +230,19 @@ S("To copy the text of the written book, place it into the crafting grid togethe
 local baq = "mcl_books:writable_book"
 local wb = "mcl_books:written_book"
 local recipes = {
-	{wb, baq},
-	{baq, baq, wb},
-	{baq, baq, wb, baq},
-	{baq, baq, baq, baq, wb},
-	{baq, baq, baq, baq, wb, baq},
-	{baq, baq, baq, baq, wb, baq, baq},
-	{baq, baq, baq, baq, wb, baq, baq, baq},
-	{baq, baq, baq, baq, wb, baq, baq, baq, baq},
+	{ wb,  baq },
+	{ baq, baq, wb },
+	{ baq, baq, wb,  baq },
+	{ baq, baq, baq, baq, wb },
+	{ baq, baq, baq, baq, wb, baq },
+	{ baq, baq, baq, baq, wb, baq, baq },
+	{ baq, baq, baq, baq, wb, baq, baq, baq },
+	{ baq, baq, baq, baq, wb, baq, baq, baq, baq },
 }
-for r=#recipes, 1, -1 do
+for r = #recipes, 1, -1 do
 	minetest.register_craft({
 		type = "shapeless",
-		output = "mcl_books:written_book "..r,
+		output = "mcl_books:written_book " .. r,
 		recipe = recipes[r],
 	})
 end
@@ -367,6 +378,9 @@ local function protection_check_put_take(pos, listname, index, stack, player)
 	end
 end
 
+---@param pos Vector
+---@param node node
+---@param clicker ObjectRef
 local function bookshelf_gui(pos, node, clicker)
 	if not bookshelf_inv then return end
 	local name = minetest.get_meta(pos):get_string("name")
@@ -378,18 +392,22 @@ local function bookshelf_gui(pos, node, clicker)
 	local playername = clicker:get_player_name()
 
 	minetest.show_formspec(playername,
-		"mcl_books:bookshelf_"..pos.x.."_"..pos.y.."_"..pos.z,
+		"mcl_books:bookshelf_" .. pos.x .. "_" .. pos.y .. "_" .. pos.z,
 		table.concat({
-			"size[9,8.75]",
-			"label[0,0;"..F(C("#313131", name)).."]",
-			"list[nodemeta:"..pos.x..","..pos.y..","..pos.z..";main;0,0.5;9,3;]",
-			mcl_formspec.get_itemslot_bg(0, 0.5, 9, 3),
-			"label[0,4.0;"..F(C("#313131", S("Inventory"))).."]",
-			"list[current_player;main;0,4.5;9,3;9]",
-			mcl_formspec.get_itemslot_bg(0, 4.5, 9, 3),
-			"list[current_player;main;0,7.74;9,1;]",
-			mcl_formspec.get_itemslot_bg(0, 7.74, 9, 1),
-			"listring[nodemeta:"..pos.x..","..pos.y..","..pos.z..";main]",
+			"formspec_version[4]",
+			"size[11.75,10.425]",
+
+			"label[0.375,0.375;" .. F(C(mcl_formspec.label_color, name)) .. "]",
+			mcl_formspec.get_itemslot_bg_v4(0.375, 0.75, 9, 3),
+			mcl_formspec.get_itemslot_bg_v4(0.375, 0.75, 9, 3, 0, "mcl_book_book_empty_slot.png"),
+			"list[nodemeta:" .. pos.x .. "," .. pos.y .. "," .. pos.z .. ";main;0.375,0.75;9,3;]",
+			"label[0.375,4.7;" .. F(C(mcl_formspec.label_color, S("Inventory"))) .. "]",
+			mcl_formspec.get_itemslot_bg_v4(0.375, 5.1, 9, 3),
+			"list[current_player;main;0.375,5.1;9,3;9]",
+
+			mcl_formspec.get_itemslot_bg_v4(0.375, 9.05, 9, 1),
+			"list[current_player;main;0.375,9.05;9,1;]",
+			"listring[nodemeta:" .. pos.x .. "," .. pos.y .. "," .. pos.z .. ";main]",
 			"listring[current_player;main]",
 		})
 	)
@@ -397,7 +415,7 @@ end
 
 local function close_forms(pos)
 	local players = minetest.get_connected_players()
-	local formname = "mcl_books:bookshelf_"..pos.x.."_"..pos.y.."_"..pos.z
+	local formname = "mcl_books:bookshelf_" .. pos.x .. "_" .. pos.y .. "_" .. pos.z
 	for p = 1, #players do
 		if vector.distance(players[p]:get_pos(), pos) <= 30 then
 			minetest.close_formspec(players[p]:get_player_name(), formname)
@@ -409,12 +427,18 @@ end
 minetest.register_node("mcl_books:bookshelf", {
 	description = S("Bookshelf"),
 	_doc_items_longdesc = S("Bookshelves are used for decoration."),
-	tiles = {"mcl_books_bookshelf_top.png", "mcl_books_bookshelf_top.png", "default_bookshelf.png"},
+	tiles = { "mcl_books_bookshelf_top.png", "mcl_books_bookshelf_top.png", "default_bookshelf.png" },
 	stack_max = 64,
 	is_ground_content = false,
 	groups = {
-		handy=1, axey=1, deco_block=1, material_wood=1,
-		flammable=3, fire_encouragement=30, fire_flammability=20, container=1
+		handy = 1,
+		axey = 1,
+		deco_block = 1,
+		material_wood = 1,
+		flammable = 3,
+		fire_encouragement = 30,
+		fire_flammability = 20,
+		container = 1
 	},
 	drop = "mcl_books:book 3",
 	sounds = wood_sound,
@@ -424,7 +448,7 @@ minetest.register_node("mcl_books:bookshelf", {
 	on_construct = function(pos)
 		local meta = minetest.get_meta(pos)
 		local inv = meta:get_inventory()
-		inv:set_size("main", 9*3)
+		inv:set_size("main", 9 * 3)
 	end,
 	after_place_node = function(pos, placer, itemstack, pointed_thing)
 		minetest.get_meta(pos):set_string("name", itemstack:get_meta():get_string("name"))
@@ -433,16 +457,16 @@ minetest.register_node("mcl_books:bookshelf", {
 	allow_metadata_inventory_take = protection_check_put_take,
 	allow_metadata_inventory_put = protection_check_put_take,
 	on_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
-		minetest.log("action", player:get_player_name()..
-			" moves stuff in bookshelf at "..minetest.pos_to_string(pos))
+		minetest.log("action", player:get_player_name() ..
+			" moves stuff in bookshelf at " .. minetest.pos_to_string(pos))
 	end,
 	on_metadata_inventory_put = function(pos, listname, index, stack, player)
-		minetest.log("action", player:get_player_name()..
-			" moves stuff to bookshelf at "..minetest.pos_to_string(pos))
+		minetest.log("action", player:get_player_name() ..
+			" moves stuff to bookshelf at " .. minetest.pos_to_string(pos))
 	end,
 	on_metadata_inventory_take = function(pos, listname, index, stack, player)
-		minetest.log("action", player:get_player_name()..
-			" takes stuff from bookshelf at "..minetest.pos_to_string(pos))
+		minetest.log("action", player:get_player_name() ..
+			" takes stuff from bookshelf at " .. minetest.pos_to_string(pos))
 	end,
 	after_dig_node = drop_content,
 	on_blast = on_blast,
@@ -453,9 +477,9 @@ minetest.register_node("mcl_books:bookshelf", {
 minetest.register_craft({
 	output = "mcl_books:bookshelf",
 	recipe = {
-		{"group:wood", "group:wood", "group:wood"},
-		{"mcl_books:book", "mcl_books:book", "mcl_books:book"},
-		{"group:wood", "group:wood", "group:wood"},
+		{ "group:wood",     "group:wood",     "group:wood" },
+		{ "mcl_books:book", "mcl_books:book", "mcl_books:book" },
+		{ "group:wood",     "group:wood",     "group:wood" },
 	}
 })
 
@@ -464,4 +488,3 @@ minetest.register_craft({
 	recipe = "mcl_books:bookshelf",
 	burntime = 15,
 })
-

mods/ITEMS/mcl_crafting_table/init.lua

@@ -1,34 +1,51 @@
+---@diagnostic disable lowercase-global
+
 local S = minetest.get_translator(minetest.get_current_modname())
-local formspec_escape = minetest.formspec_escape
-local show_formspec = minetest.show_formspec
+local F = minetest.formspec_escape
 local C = minetest.colorize
-local text_color = "#313131"
-local itemslot_bg = mcl_formspec.get_itemslot_bg
+local show_formspec = minetest.show_formspec
 
 mcl_crafting_table = {}
 
-function mcl_crafting_table.show_crafting_form(player)
-	player:get_inventory():set_width("craft", 3)
-	player:get_inventory():set_size("craft", 9)
+mcl_crafting_table.formspec = table.concat({
+	"formspec_version[4]",
+	"size[11.75,10.425]",
 
-	show_formspec(player:get_player_name(), "main",
-		"size[9,8.75]"..
-		"image[4.7,1.5;1.5,1;gui_crafting_arrow.png]"..
-		"label[0,4;"..formspec_escape(C(text_color, S("Inventory"))).."]"..
-		"list[current_player;main;0,4.5;9,3;9]"..
-		itemslot_bg(0,4.5,9,3)..
-		"list[current_player;main;0,7.74;9,1;]"..
-		itemslot_bg(0,7.74,9,1)..
-		"label[1.75,0;"..formspec_escape(C(text_color, S("Crafting"))).."]"..
-		"list[current_player;craft;1.75,0.5;3,3;]"..
-		itemslot_bg(1.75,0.5,3,3)..
-		"list[current_player;craftpreview;6.1,1.5;1,1;]"..
-		itemslot_bg(6.1,1.5,1,1)..
-		"image_button[0.75,1.5;1,1;craftguide_book.png;__mcl_craftguide;]"..
-		"tooltip[__mcl_craftguide;"..formspec_escape(S("Recipe book")).."]"..
-		"listring[current_player;main]"..
-		"listring[current_player;craft]"
-	)
+	"label[2.25,0.375;" .. F(C(mcl_formspec.label_color, S("Crafting"))) .. "]",
+
+	mcl_formspec.get_itemslot_bg_v4(2.25, 0.75, 3, 3),
+	"list[current_player;craft;2.25,0.75;3,3;]",
+
+	"image[6.125,2;1.5,1;gui_crafting_arrow.png]",
+
+	mcl_formspec.get_itemslot_bg_v4(8.2, 2, 1, 1, 0.2),
+	"list[current_player;craftpreview;8.2,2;1,1;]",
+
+	"label[0.375,4.7;" .. F(C(mcl_formspec.label_color, S("Inventory"))) .. "]",
+
+	mcl_formspec.get_itemslot_bg_v4(0.375, 5.1, 9, 3),
+	"list[current_player;main;0.375,5.1;9,3;9]",
+
+	mcl_formspec.get_itemslot_bg_v4(0.375, 9.05, 9, 1),
+	"list[current_player;main;0.375,9.05;9,1;]",
+
+	"listring[current_player;craft]",
+	"listring[current_player;main]",
+
+	--Crafting guide button
+	"image_button[0.325,1.95;1.1,1.1;craftguide_book.png;__mcl_craftguide;]",
+	"tooltip[__mcl_craftguide;" .. F(S("Recipe book")) .. "]",
+})
+
+---@param player ObjectRef
+function mcl_crafting_table.show_crafting_form(player)
+	local inv = player:get_inventory()
+	if inv then
+		inv:set_width("craft", 3)
+		inv:set_size("craft", 9)
+	end
+
+	show_formspec(player:get_player_name(), "main", mcl_crafting_table.formspec)
 end
 
 minetest.register_node("mcl_crafting_table:crafting_table", {
@@ -38,10 +55,10 @@ minetest.register_node("mcl_crafting_table:crafting_table", {
 	_doc_items_usagehelp = S("Rightclick the crafting table to access the 3×3 crafting grid."),
 	_doc_items_hidden = false,
 	is_ground_content = false,
-	tiles = {"crafting_workbench_top.png", "default_wood.png", "crafting_workbench_side.png",
-		"crafting_workbench_side.png", "crafting_workbench_front.png", "crafting_workbench_front.png"},
+	tiles = { "crafting_workbench_top.png", "default_wood.png", "crafting_workbench_side.png",
+		"crafting_workbench_side.png", "crafting_workbench_front.png", "crafting_workbench_front.png" },
 	paramtype2 = "facedir",
-	groups = {handy=1,axey=1, deco_block=1, material_wood=1,flammable=-1},
+	groups = { handy = 1, axey = 1, deco_block = 1, material_wood = 1, flammable = -1 },
 	on_rightclick = function(pos, node, player, itemstack)
 		if not player:get_player_control().sneak then
 			mcl_crafting_table.show_crafting_form(player)
@@ -55,9 +72,9 @@ minetest.register_node("mcl_crafting_table:crafting_table", {
 minetest.register_craft({
 	output = "mcl_crafting_table:crafting_table",
 	recipe = {
-		{"group:wood", "group:wood"},
-		{"group:wood", "group:wood"}
-	}
+		{ "group:wood", "group:wood" },
+		{ "group:wood", "group:wood" }
+	},
 })
 
 minetest.register_craft({

mods/ITEMS/mcl_enchanting/engine.lua

@@ -2,7 +2,8 @@ local S = minetest.get_translator(minetest.get_current_modname())
 local F = minetest.formspec_escape
 
 function mcl_enchanting.is_book(itemname)
-	return itemname == "mcl_books:book" or itemname == "mcl_enchanting:book_enchanted" or itemname == "mcl_books:book_enchanted"
+	return itemname == "mcl_books:book" or itemname == "mcl_enchanting:book_enchanted" or
+		itemname == "mcl_books:book_enchanted"
 end
 
 function mcl_enchanting.get_enchantments(itemstack)
@@ -54,11 +55,13 @@ end
 
 function mcl_enchanting.get_enchantment_description(enchantment, level)
 	local enchantment_def = mcl_enchanting.enchantments[enchantment]
-	return enchantment_def.name .. (enchantment_def.max_level == 1 and "" or " " .. mcl_enchanting.roman_numerals.toRoman(level))
+	return enchantment_def.name ..
+		(enchantment_def.max_level == 1 and "" or " " .. mcl_enchanting.roman_numerals.toRoman(level))
 end
 
 function mcl_enchanting.get_colorized_enchantment_description(enchantment, level)
-	return minetest.colorize(mcl_enchanting.enchantments[enchantment].curse and mcl_colors.RED or mcl_colors.GRAY, mcl_enchanting.get_enchantment_description(enchantment, level))
+	return minetest.colorize(mcl_enchanting.enchantments[enchantment].curse and mcl_colors.RED or mcl_colors.GRAY,
+		mcl_enchanting.get_enchantment_description(enchantment, level))
 end
 
 function mcl_enchanting.get_enchanted_itemstring(itemname)
@@ -79,7 +82,8 @@ function mcl_enchanting.not_enchantable_on_enchanting_table(itemname)
 end
 
 function mcl_enchanting.is_enchantable(itemname)
-	return mcl_enchanting.get_enchantability(itemname) > 0 or mcl_enchanting.not_enchantable_on_enchanting_table(itemname)
+	return mcl_enchanting.get_enchantability(itemname) > 0 or
+		mcl_enchanting.not_enchantable_on_enchanting_table(itemname)
 end
 
 function mcl_enchanting.can_enchant_freshly(itemname)
@@ -150,7 +154,8 @@ function mcl_enchanting.can_enchant(itemstack, enchantment, level)
 		for incompatible in pairs(enchantment_def.incompatible) do
 			local incompatible_level = item_enchantments[incompatible]
 			if incompatible_level then
-				return false, "incompatible", mcl_enchanting.get_enchantment_description(incompatible, incompatible_level)
+				return false, "incompatible",
+					mcl_enchanting.get_enchantment_description(incompatible, incompatible_level)
 			end
 		end
 	end
@@ -169,7 +174,9 @@ function mcl_enchanting.combine(itemstack, combine_with)
 	local itemname = itemstack:get_name()
 	local combine_name = combine_with:get_name()
 	local enchanted_itemname = mcl_enchanting.get_enchanted_itemstring(itemname)
-	if not enchanted_itemname or enchanted_itemname ~= mcl_enchanting.get_enchanted_itemstring(combine_name) and not mcl_enchanting.is_book(combine_name) then
+	if not enchanted_itemname or
+		enchanted_itemname ~= mcl_enchanting.get_enchanted_itemstring(combine_name) and
+		not mcl_enchanting.is_book(combine_name) then
 		return false
 	end
 	local enchantments = mcl_enchanting.get_enchantments(itemstack)
@@ -219,7 +226,7 @@ function mcl_enchanting.enchantments_snippet(_, _, itemstack)
 	local enchantments = mcl_enchanting.get_enchantments(itemstack)
 	local text = ""
 	for enchantment, level in pairs(enchantments) do
-		text = text ..  mcl_enchanting.get_colorized_enchantment_description(enchantment, level) .. "\n"
+		text = text .. mcl_enchanting.get_colorized_enchantment_description(enchantment, level) .. "\n"
 	end
 	if text ~= "" then
 		if not itemstack:get_definition()._tt_original_description then
@@ -267,7 +274,7 @@ function mcl_enchanting.initialize()
 	for itemname, itemdef in pairs(minetest.registered_items) do
 		if mcl_enchanting.can_enchant_freshly(itemname) and not mcl_enchanting.is_book(itemname) then
 			local new_name = itemname .. "_enchanted"
-			minetest.override_item(itemname, {_mcl_enchanting_enchanted_tool = new_name})
+			minetest.override_item(itemname, { _mcl_enchanting_enchanted_tool = new_name })
 			local new_def = table.copy(itemdef)
 			new_def.inventory_image = itemdef.inventory_image .. mcl_enchanting.overlay
 			if new_def.wield_image then
@@ -303,7 +310,7 @@ end
 function mcl_enchanting.random(pr, ...)
 	local r = pr and pr:next(...) or math.random(...)
 
-	if pr and not ({...})[1] then
+	if pr and not ({ ... })[1] then
 		r = r / 32767
 	end
 
@@ -328,20 +335,24 @@ function mcl_enchanting.get_random_enchantment(itemstack, treasure, weighted, ex
 	return #possible > 0 and possible[mcl_enchanting.random(pr, 1, #possible)]
 end
 
-function mcl_enchanting.generate_random_enchantments(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted, pr)
+function mcl_enchanting.generate_random_enchantments(itemstack, enchantment_level, treasure, no_reduced_bonus_chance,
+													 ignore_already_enchanted, pr)
 	local itemname = itemstack:get_name()
 
-	if (not mcl_enchanting.can_enchant_freshly(itemname) and not ignore_already_enchanted) or mcl_enchanting.not_enchantable_on_enchanting_table(itemname) then
+	if (not mcl_enchanting.can_enchant_freshly(itemname) and not ignore_already_enchanted) or
+		mcl_enchanting.not_enchantable_on_enchanting_table(itemname) then
 		return
 	end
 
 	itemstack = ItemStack(itemstack)
 
 	local enchantability = minetest.get_item_group(itemname, "enchantability")
-	enchantability = 1 + mcl_enchanting.random(pr, 0, math.floor(enchantability / 4)) + mcl_enchanting.random(pr, 0, math.floor(enchantability / 4))
+	enchantability = 1 + mcl_enchanting.random(pr, 0, math.floor(enchantability / 4)) +
+		mcl_enchanting.random(pr, 0, math.floor(enchantability / 4))
 
 	enchantment_level = enchantment_level + enchantability
-	enchantment_level = enchantment_level + enchantment_level * (mcl_enchanting.random(pr) + mcl_enchanting.random(pr) - 1) * 0.15
+	enchantment_level = enchantment_level +
+		enchantment_level * (mcl_enchanting.random(pr) + mcl_enchanting.random(pr) - 1) * 0.15
 	enchantment_level = math.max(math.floor(enchantment_level + 0.5), 1)
 
 	local enchantments = {}
@@ -387,7 +398,6 @@ function mcl_enchanting.generate_random_enchantments(itemstack, enchantment_leve
 			enchantments[selected_enchantment] = enchantment_power
 			mcl_enchanting.enchant(itemstack, selected_enchantment, enchantment_power)
 		end
-
 	until not no_reduced_bonus_chance and mcl_enchanting.random(pr) >= (enchantment_level + 1) / 50
 
 	return enchantments, description
@@ -397,13 +407,15 @@ function mcl_enchanting.generate_random_enchantments_reliable(itemstack, enchant
 	local enchantments
 
 	repeat
-		enchantments = mcl_enchanting.generate_random_enchantments(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted, pr)
+		enchantments = mcl_enchanting.generate_random_enchantments(itemstack, enchantment_level, treasure,
+			no_reduced_bonus_chance, ignore_already_enchanted, pr)
 	until enchantments
 
 	return enchantments
 end
 
-function mcl_enchanting.enchant_randomly(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted, pr)
+function mcl_enchanting.enchant_randomly(itemstack, enchantment_level, treasure, no_reduced_bonus_chance,
+										 ignore_already_enchanted, pr)
 	local enchantments = mcl_enchanting.generate_random_enchantments_reliable(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted, pr)
 
 	mcl_enchanting.set_enchanted_itemstring(itemstack)
@@ -416,7 +428,8 @@ function mcl_enchanting.enchant_uniform_randomly(stack, exclude, pr)
 	local enchantment = mcl_enchanting.get_random_enchantment(stack, true, false, exclude, pr)
 
 	if enchantment then
-		mcl_enchanting.enchant(stack, enchantment, mcl_enchanting.random(pr, 1, mcl_enchanting.enchantments[enchantment].max_level))
+		mcl_enchanting.enchant(stack, enchantment,
+			mcl_enchanting.random(pr, 1, mcl_enchanting.enchantments[enchantment].max_level))
 	end
 
 	return stack
@@ -426,7 +439,8 @@ function mcl_enchanting.get_random_glyph_row()
 	local glyphs = ""
 	local x = 1.3
 	for i = 1, 9 do
-		glyphs = glyphs .. "image[".. x .. ",0.1;0.5,0.5;mcl_enchanting_glyph_" .. math.random(18) .. ".png^[colorize:#675D49:255]"
+		glyphs = glyphs ..
+			"image[" .. x .. ",0.1;0.5,0.5;mcl_enchanting_glyph_" .. math.random(18) .. ".png^[colorize:#675D49:255]"
 		x = x + 0.6
 	end
 	return glyphs
@@ -459,7 +473,7 @@ end
 function mcl_enchanting.get_table_slots(player, itemstack, num_bookshelves)
 	local itemname = itemstack:get_name()
 	if (not mcl_enchanting.can_enchant_freshly(itemname)) or mcl_enchanting.not_enchantable_on_enchanting_table(itemname) then
-		return {false, false, false}
+		return { false, false, false }
 	end
 	local meta = player:get_meta()
 	local player_slots = minetest.deserialize(meta:get_string("mcl_enchanting:slots")) or {}
@@ -475,7 +489,7 @@ function mcl_enchanting.get_table_slots(player, itemstack, num_bookshelves)
 			meta:set_string("mcl_enchanting:slots", minetest.serialize(player_slots))
 			return player_bookshelves_item_slots
 		else
-			return {false, false, false}
+			return { false, false, false }
 		end
 	end
 end
@@ -491,28 +505,33 @@ function mcl_enchanting.show_enchanting_formspec(player)
 	local inv = player:get_inventory()
 	local num_bookshelves = meta:get_int("mcl_enchanting:num_bookshelves")
 	local table_name = meta:get_string("mcl_enchanting:table_name")
-	local formspec = ""
-		.. "size[9.07,8.6;]"
-		.. "formspec_version[3]"
-		.. "label[0,0;" .. C("#313131") .. F(table_name) .. "]"
-		.. mcl_formspec.get_itemslot_bg(0.2, 2.4, 1, 1)
-		.. "list[current_player;enchanting_item;0.2,2.4;1,1]"
-		.. mcl_formspec.get_itemslot_bg(1.1, 2.4, 1, 1)
-		.. "image[1.1,2.4;1,1;mcl_enchanting_lapis_background.png]"
-		.. "list[current_player;enchanting_lapis;1.1,2.4;1,1]"
-		.. "label[0,4;" .. C("#313131") .. F(S("Inventory")).."]"
-		.. mcl_formspec.get_itemslot_bg(0, 4.5, 9, 3)
-		.. mcl_formspec.get_itemslot_bg(0, 7.74, 9, 1)
-		.. "list[current_player;main;0,4.5;9,3;9]"
-		.. "listring[current_player;enchanting_item]"
-		.. "listring[current_player;main]"
-		.. "listring[current_player;enchanting]"
-		.. "listring[current_player;main]"
-		.. "listring[current_player;enchanting_lapis]"
-		.. "listring[current_player;main]"
-		.. "list[current_player;main;0,7.74;9,1;]"
-		.. "real_coordinates[true]"
-		.. "image[3.15,0.6;7.6,4.1;mcl_enchanting_button_background.png]"
+
+	local formspec = table.concat({
+		"formspec_version[4]",
+		"size[11.75,10.425]",
+
+		"label[0.375,0.375;" .. F(C(mcl_formspec.label_color) .. table_name) .. "]",
+		mcl_formspec.get_itemslot_bg_v4(1, 3.25, 1, 1),
+		"list[current_player;enchanting_item;1,3.25;1,1]",
+		mcl_formspec.get_itemslot_bg_v4(2.25, 3.25, 1, 1),
+		"image[2.25,3.25;1,1;mcl_enchanting_lapis_background.png]",
+		"list[current_player;enchanting_lapis;2.25,3.25;1,1]",
+		"image[4.125,0.56;7.25,4.1;mcl_enchanting_button_background.png]",
+		"label[0.375,4.7;" .. F(C(mcl_formspec.label_color) .. S("Inventory")) .. "]",
+		mcl_formspec.get_itemslot_bg_v4(0.375, 5.1, 9, 3),
+		"list[current_player;main;0.375,5.1;9,3;9]",
+
+		mcl_formspec.get_itemslot_bg_v4(0.375, 9.05, 9, 1),
+		"list[current_player;main;0.375,9.05;9,1;]",
+
+		"listring[current_player;enchanting_item]",
+		"listring[current_player;main]",
+		"listring[current_player;enchanting]",
+		"listring[current_player;main]",
+		"listring[current_player;enchanting_lapis]",
+		"listring[current_player;main]",
+	})
+
 	local itemstack = inv:get_stack("enchanting_item", 1)
 	local player_levels = mcl_experience.get_level(player)
 	local y = 0.65
@@ -520,24 +539,50 @@ function mcl_enchanting.show_enchanting_formspec(player)
 	local table_slots = mcl_enchanting.get_table_slots(player, itemstack, num_bookshelves)
 	for i, slot in ipairs(table_slots) do
 		any_enchantment = any_enchantment or slot
-		local enough_lapis = inv:contains_item("enchanting_lapis", ItemStack({name = "mcl_core:lapis", count = i}))
+		local enough_lapis = inv:contains_item("enchanting_lapis", ItemStack({ name = "mcl_core:lapis", count = i }))
 		local enough_levels = slot and slot.level_requirement <= player_levels
 		local can_enchant = (slot and enough_lapis and enough_levels)
 		local ending = (can_enchant and "" or "_off")
 		local hover_ending = (can_enchant and "_hovered" or "_off")
 		formspec = formspec
-			.. "container[3.2," .. y .. "]"
-			.. (slot and "tooltip[button_" .. i .. ";" .. C("#818181") .. ((slot.description and F(slot.description)) or "") .. " " .. C("#FFFFFF") .. " . . . ?\n\n" .. (enough_levels and C(enough_lapis and "#818181" or "#FC5454") .. F(S("@1 Lapis Lazuli", i)) .. "\n" .. C("#818181") .. F(S("@1 Enchantment Levels", i)) or C("#FC5454") .. F(S("Level requirement: @1", slot.level_requirement))) .. "]" or "")
-			.. "style[button_" .. i .. ";bgimg=mcl_enchanting_button" .. ending .. ".png;bgimg_hovered=mcl_enchanting_button" .. hover_ending .. ".png;bgimg_pressed=mcl_enchanting_button" .. hover_ending .. ".png]"
-			.. "button[0,0;7.5,1.3;button_" .. i .. ";]"
+			.. "container[4.125," .. y .. "]"
+			..
+			(
+				slot and
+				"tooltip[button_" ..
+				i ..
+				";" ..
+				C("#818181") ..
+				((slot.description and F(slot.description)) or "") ..
+				" " ..
+				C("#FFFFFF") ..
+				" . . . ?\n\n" ..
+				(
+					enough_levels and
+					C(enough_lapis and "#818181" or "#FC5454") ..
+					F(S("@1 Lapis Lazuli", i)) .. "\n" .. C("#818181") .. F(S("@1 Enchantment Levels", i)) or
+					C("#FC5454") .. F(S("Level requirement: @1", slot.level_requirement))) .. "]" or "")
+			..
+			"style[button_" ..
+			i ..
+			";bgimg=mcl_enchanting_button" ..
+			ending ..
+			".png;bgimg_hovered=mcl_enchanting_button" ..
+			hover_ending .. ".png;bgimg_pressed=mcl_enchanting_button" .. hover_ending .. ".png]"
+			.. "button[0,0;7.25,1.3;button_" .. i .. ";]"
 			.. (slot and "image[0,0;1.3,1.3;mcl_enchanting_number_" .. i .. ending .. ".png]" or "")
-			.. (slot and "label[7.2,1.1;" .. C(can_enchant and "#80FF20" or "#407F10") .. slot.level_requirement .. "]" or "")
+			.. (slot and "label[6.8,1;" .. C(can_enchant and "#80FF20" or "#407F10") .. slot.level_requirement .. "]" or "")
 			.. (slot and slot.glyphs or "")
 			.. "container_end[]"
-		y = y + 1.35
+		y = y + 1.3
 	end
 	formspec = formspec
-		.. "image[" .. (any_enchantment and 0.58 or 1.15) .. ",1.2;" .. (any_enchantment and 2 or 0.87) .. ",1.43;mcl_enchanting_book_" .. (any_enchantment and "open" or "closed") .. ".png]"
+		..
+		"image[" ..
+		(any_enchantment and 1.1 or 1.67) ..
+		",1.2;" ..
+		(any_enchantment and 2 or 0.87) ..
+		",1.43;mcl_enchanting_book_" .. (any_enchantment and "open" or "closed") .. ".png]"
 	minetest.show_formspec(name, "mcl_enchanting:table", formspec)
 end
 
@@ -555,7 +600,7 @@ function mcl_enchanting.handle_formspec_fields(player, formname, fields)
 		local meta = player:get_meta()
 		local num_bookshelfes = meta:get_int("mcl_enchanting:num_bookshelves")
 		local itemstack = inv:get_stack("enchanting_item", 1)
-		local cost = ItemStack({name = "mcl_core:lapis", count = button_pressed})
+		local cost = ItemStack({ name = "mcl_core:lapis", count = button_pressed })
 		if not inv:contains_item("enchanting_lapis", cost) then
 			return
 		end
@@ -573,7 +618,7 @@ function mcl_enchanting.handle_formspec_fields(player, formname, fields)
 		mcl_enchanting.set_enchanted_itemstring(itemstack)
 		mcl_enchanting.set_enchantments(itemstack, slot.enchantments)
 		inv:set_stack("enchanting_item", 1, itemstack)
-		minetest.sound_play("mcl_enchanting_enchant", {to_player = name, gain = 5.0})
+		minetest.sound_play("mcl_enchanting_enchant", { to_player = name, gain = 5.0 })
 		mcl_enchanting.reset_table_slots(player)
 		mcl_enchanting.show_enchanting_formspec(player)
 		awards.unlock(player:get_player_name(), "mcl:enchanter")
@@ -603,7 +648,8 @@ function mcl_enchanting.is_enchanting_inventory_action(action, inventory, invent
 end
 
 function mcl_enchanting.allow_inventory_action(player, action, inventory, inventory_info)
-	local is_enchanting_action, do_limit = mcl_enchanting.is_enchanting_inventory_action(action, inventory, inventory_info)
+	local is_enchanting_action, do_limit = mcl_enchanting.is_enchanting_inventory_action(action, inventory,
+		inventory_info)
 	if is_enchanting_action and do_limit then
 		if action == "move" then
 			local listname = inventory_info.to_list
@@ -645,13 +691,15 @@ function mcl_enchanting.on_inventory_action(player, action, inventory, inventory
 end
 
 function mcl_enchanting.schedule_book_animation(self, anim)
-	self.scheduled_anim = {timer = self.anim_length, anim = anim}
+	self.scheduled_anim = { timer = self.anim_length, anim = anim }
 end
 
 function mcl_enchanting.set_book_animation(self, anim)
 	local anim_index = mcl_enchanting.book_animations[anim]
-	local start, stop = mcl_enchanting.book_animation_steps[anim_index], mcl_enchanting.book_animation_steps[anim_index + 1]
-	self.object:set_animation({x = start, y = stop}, mcl_enchanting.book_animation_speed, 0, mcl_enchanting.book_animation_loop[anim] or false)
+	local start, stop = mcl_enchanting.book_animation_steps[anim_index],
+		mcl_enchanting.book_animation_steps[anim_index + 1]
+	self.object:set_animation({ x = start, y = stop }, mcl_enchanting.book_animation_speed, 0,
+		mcl_enchanting.book_animation_loop[anim] or false)
 	self.scheduled_anim = nil
 	self.anim_length = (stop - start) / 40
 end
@@ -661,7 +709,7 @@ function mcl_enchanting.check_animation_schedule(self, dtime)
 	if schedanim then
 		schedanim.timer = schedanim.timer - dtime
 		if schedanim.timer <= 0 then
-			 mcl_enchanting.set_book_animation(self, schedanim.anim)
+			mcl_enchanting.set_book_animation(self, schedanim.anim)
 		end
 	end
 end
@@ -669,7 +717,7 @@ end
 function mcl_enchanting.look_at(self, pos2)
 	local pos1 = self.object:get_pos()
 	local vec = vector.subtract(pos1, pos2)
-	local yaw = math.atan(vec.z / vec.x) - math.pi/2
+	local yaw = math.atan(vec.z / vec.x) - math.pi / 2
 	yaw = yaw + (pos1.x >= pos2.x and math.pi or 0)
 	self.object:set_yaw(yaw + math.pi)
 end

mods/ITEMS/mcl_furnaces/init.lua

@@ -1,5 +1,6 @@
-
 local S = minetest.get_translator(minetest.get_current_modname())
+local C = minetest.colorize
+local F = minetest.formspec_escape
 
 local LIGHT_ACTIVE_FURNACE = 13
 
@@ -8,60 +9,82 @@ local LIGHT_ACTIVE_FURNACE = 13
 --
 
 local function active_formspec(fuel_percent, item_percent)
-	return "size[9,8.75]"..
-	"label[0,4;"..minetest.formspec_escape(minetest.colorize("#313131", S("Inventory"))).."]"..
-	"list[current_player;main;0,4.5;9,3;9]"..
-	mcl_formspec.get_itemslot_bg(0,4.5,9,3)..
-	"list[current_player;main;0,7.74;9,1;]"..
-	mcl_formspec.get_itemslot_bg(0,7.74,9,1)..
-	"label[2.75,0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Furnace"))).."]"..
-	"list[context;src;2.75,0.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(2.75,0.5,1,1)..
-	"list[context;fuel;2.75,2.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(2.75,2.5,1,1)..
-	"list[context;dst;5.75,1.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(5.75,1.5,1,1)..
-	"image[2.75,1.5;1,1;default_furnace_fire_bg.png^[lowpart:"..
-	(100-fuel_percent)..":default_furnace_fire_fg.png]"..
-	"image[4.1,1.5;1.5,1;gui_furnace_arrow_bg.png^[lowpart:"..
-	(item_percent)..":gui_furnace_arrow_fg.png^[transformR270]"..
-	-- Craft guide button temporarily removed due to Minetest bug.
-	-- TODO: Add it back when the Minetest bug is fixed.
-	--"image_button[8,0;1,1;craftguide_book.png;craftguide;]"..
-	--"tooltip[craftguide;"..minetest.formspec_escape(S("Recipe book")).."]"..
-	"listring[context;dst]"..
-	"listring[current_player;main]"..
-	"listring[context;src]"..
-	"listring[current_player;main]"..
-	"listring[context;fuel]"..
-	"listring[current_player;main]"
+	return table.concat({
+		"formspec_version[4]",
+		"size[11.75,10.425]",
+		"label[0.375,0.375;" .. F(C(mcl_formspec.label_color, S("Furnace"))) .. "]",
+		mcl_formspec.get_itemslot_bg_v4(3.5, 0.75, 1, 1),
+		"list[context;src;3.5,0.75;1,1;]",
+
+		"image[3.5,2;1,1;default_furnace_fire_bg.png^[lowpart:" ..
+		(100 - fuel_percent) .. ":default_furnace_fire_fg.png]",
+
+		mcl_formspec.get_itemslot_bg_v4(3.5, 3.25, 1, 1),
+		"list[context;fuel;3.5,3.25;1,1;]",
+
+		"image[5.25,2;1.5,1;gui_furnace_arrow_bg.png^[lowpart:" ..
+		(item_percent) .. ":gui_furnace_arrow_fg.png^[transformR270]",
+		mcl_formspec.get_itemslot_bg_v4(7.875, 2, 1, 1, 0.2),
+		"list[context;dst;7.875,2;1,1;]",
+
+		"label[0.375,4.7;" .. F(C(mcl_formspec.label_color, S("Inventory"))) .. "]",
+		mcl_formspec.get_itemslot_bg_v4(0.375, 5.1, 9, 3),
+		"list[current_player;main;0.375,5.1;9,3;9]",
+
+		mcl_formspec.get_itemslot_bg_v4(0.375, 9.05, 9, 1),
+		"list[current_player;main;0.375,9.05;9,1;]",
+
+		-- Craft guide button temporarily removed due to Minetest bug.
+		-- TODO: Add it back when the Minetest bug is fixed.
+		--"image_button[8,0;1,1;craftguide_book.png;craftguide;]"..
+		--"tooltip[craftguide;"..minetest.formspec_escape(S("Recipe book")).."]"..
+
+		"listring[context;dst]",
+		"listring[current_player;main]",
+		"listring[context;src]",
+		"listring[current_player;main]",
+		"listring[context;fuel]",
+		"listring[current_player;main]",
+	})
 end
 
-local inactive_formspec = "size[9,8.75]"..
-	"label[0,4;"..minetest.formspec_escape(minetest.colorize("#313131", S("Inventory"))).."]"..
-	"list[current_player;main;0,4.5;9,3;9]"..
-	mcl_formspec.get_itemslot_bg(0,4.5,9,3)..
-	"list[current_player;main;0,7.74;9,1;]"..
-	mcl_formspec.get_itemslot_bg(0,7.74,9,1)..
-	"label[2.75,0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Furnace"))).."]"..
-	"list[context;src;2.75,0.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(2.75,0.5,1,1)..
-	"list[context;fuel;2.75,2.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(2.75,2.5,1,1)..
-	"list[context;dst;5.75,1.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(5.75,1.5,1,1)..
-	"image[2.75,1.5;1,1;default_furnace_fire_bg.png]"..
-	"image[4.1,1.5;1.5,1;gui_furnace_arrow_bg.png^[transformR270]"..
+local inactive_formspec = table.concat({
+	"formspec_version[4]",
+	"size[11.75,10.425]",
+	"label[0.375,0.375;" .. F(C(mcl_formspec.label_color, S("Furnace"))) .. "]",
+	mcl_formspec.get_itemslot_bg_v4(3.5, 0.75, 1, 1),
+	"list[context;src;3.5,0.75;1,1;]",
+
+	"image[3.5,2;1,1;default_furnace_fire_bg.png]",
+
+	mcl_formspec.get_itemslot_bg_v4(3.5, 3.25, 1, 1),
+	"list[context;fuel;3.5,3.25;1,1;]",
+
+	"image[5.25,2;1.5,1;gui_furnace_arrow_bg.png^[transformR270]",
+
+	mcl_formspec.get_itemslot_bg_v4(7.875, 2, 1, 1, 0.2),
+	"list[context;dst;7.875,2;1,1;]",
+
+	"label[0.375,4.7;" .. F(C(mcl_formspec.label_color, S("Inventory"))) .. "]",
+	mcl_formspec.get_itemslot_bg_v4(0.375, 5.1, 9, 3),
+	"list[current_player;main;0.375,5.1;9,3;9]",
+
+	mcl_formspec.get_itemslot_bg_v4(0.375, 9.05, 9, 1),
+	"list[current_player;main;0.375,9.05;9,1;]",
+
 	-- Craft guide button temporarily removed due to Minetest bug.
 	-- TODO: Add it back when the Minetest bug is fixed.
 	--"image_button[8,0;1,1;craftguide_book.png;craftguide;]"..
 	--"tooltip[craftguide;"..minetest.formspec_escape(S("Recipe book")).."]"..
-	"listring[context;dst]"..
-	"listring[current_player;main]"..
-	"listring[context;src]"..
-	"listring[current_player;main]"..
-	"listring[context;fuel]"..
-	"listring[current_player;main]"
+
+	"listring[context;dst]",
+	"listring[current_player;main]",
+	"listring[context;src]",
+	"listring[current_player;main]",
+	"listring[context;fuel]",
+	"listring[current_player;main]",
+})
+
 
 local receive_fields = function(pos, formname, fields, sender)
 	if fields.craftguide then
@@ -71,7 +94,7 @@ end
 
 local function give_xp(pos, player)
 	local meta = minetest.get_meta(pos)
-	local dir = vector.divide(minetest.facedir_to_dir(minetest.get_node(pos).param2),-1.95)
+	local dir = vector.divide(minetest.facedir_to_dir(minetest.get_node(pos).param2), -1.95)
 	local xp = meta:get_int("xp")
 	if xp > 0 then
 		if player then
@@ -108,7 +131,7 @@ local function allow_metadata_inventory_put(pos, listname, index, stack, player)
 		-- Test stack with size 1 because we burn one fuel at a time
 		local teststack = ItemStack(stack)
 		teststack:set_count(1)
-		local output, decremented_input = minetest.get_craft_result({method="fuel", width=1, items={teststack}})
+		local output, decremented_input = minetest.get_craft_result({ method = "fuel", width = 1, items = { teststack } })
 		if output.time ~= 0 then
 			-- Only allow to place 1 item if fuel get replaced by recipe.
 			-- This is the case for lava buckets.
@@ -303,7 +326,7 @@ local function furnace_node_timer(pos, elapsed)
 
 		-- Check if we have cookable content: cookable
 		local aftercooked
-		cooked, aftercooked = minetest.get_craft_result({method = "cooking", width = 1, items = srclist})
+		cooked, aftercooked = minetest.get_craft_result({ method = "cooking", width = 1, items = srclist })
 		cookable = cooked.time ~= 0
 		if cookable then
 			-- Successful cooking requires space in dst slot and time
@@ -321,7 +344,7 @@ local function furnace_node_timer(pos, elapsed)
 		if cookable and not active then
 			-- We need to get new fuel
 			local afterfuel
-			fuel, afterfuel = minetest.get_craft_result({method = "fuel", width = 1, items = fuellist})
+			fuel, afterfuel = minetest.get_craft_result({ method = "fuel", width = 1, items = fuellist })
 
 			if fuel.time == 0 then
 				-- No valid fuel in fuel list -- stop
@@ -356,7 +379,7 @@ local function furnace_node_timer(pos, elapsed)
 					if srclist[1]:get_name() == "mcl_sponges:sponge_wet" then
 						inv:set_stack("fuel", 1, "mcl_buckets:bucket_water")
 						fuellist = inv:get_list("fuel")
-					-- Also for river water
+						-- Also for river water
 					elseif srclist[1]:get_name() == "mcl_sponges:sponge_wet_river_water" then
 						inv:set_stack("fuel", 1, "mcl_buckets:bucket_river_water")
 						fuellist = inv:get_list("fuel")
@@ -366,7 +389,7 @@ local function furnace_node_timer(pos, elapsed)
 				srclist = inv:get_list("src")
 				src_time = 0
 
-				meta:set_int("xp", meta:get_int("xp") + 1)		-- ToDo give each recipe an idividial XP count
+				meta:set_int("xp", meta:get_int("xp") + 1) -- ToDo give each recipe an idividial XP count
 			end
 		end
 
@@ -413,9 +436,9 @@ local function furnace_node_timer(pos, elapsed)
 	meta:set_float("fuel_time", fuel_time)
 	meta:set_float("src_time", src_time)
 	if srclist then
-		 meta:set_string("src_item", src_item)
+		meta:set_string("src_item", src_item)
 	else
-		 meta:set_string("src_item", "")
+		meta:set_string("src_item", "")
 	end
 	meta:set_string("formspec", formspec)
 
@@ -440,11 +463,11 @@ minetest.register_node("mcl_furnaces:furnace", {
 	_tt_help = S("Uses fuel to smelt or cook items"),
 	_doc_items_longdesc = S("Furnaces cook or smelt several items, using a furnace fuel, into something else."),
 	_doc_items_usagehelp =
-			S("Use the furnace to open the furnace menu.").."\n"..
-			S("Place a furnace fuel in the lower slot and the source material in the upper slot.").."\n"..
-			S("The furnace will slowly use its fuel to smelt the item.").."\n"..
-			S("The result will be placed into the output slot at the right side.").."\n"..
-			S("Use the recipe book to see what you can smelt, what you can use as fuel and how long it will burn."),
+		S("Use the furnace to open the furnace menu.") .. "\n" ..
+		S("Place a furnace fuel in the lower slot and the source material in the upper slot.") .. "\n" ..
+		S("The furnace will slowly use its fuel to smelt the item.") .. "\n" ..
+		S("The result will be placed into the output slot at the right side.") .. "\n" ..
+		S("Use the recipe book to see what you can smelt, what you can use as fuel and how long it will burn."),
 	_doc_items_hidden = false,
 	tiles = {
 		"default_furnace_top.png", "default_furnace_bottom.png",
@@ -452,7 +475,7 @@ minetest.register_node("mcl_furnaces:furnace", {
 		"default_furnace_side.png", "default_furnace_front.png"
 	},
 	paramtype2 = "facedir",
-	groups = {pickaxey=1, container=4, deco_block=1, material_stone=1},
+	groups = { pickaxey = 1, container = 4, deco_block = 1, material_stone = 1 },
 	is_ground_content = false,
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 
@@ -462,10 +485,11 @@ minetest.register_node("mcl_furnaces:furnace", {
 		local meta2 = meta:to_table()
 		meta:from_table(oldmetadata)
 		local inv = meta:get_inventory()
-		for _, listname in ipairs({"src", "dst", "fuel"}) do
+		for _, listname in ipairs({ "src", "dst", "fuel" }) do
 			local stack = inv:get_stack(listname, 1)
 			if not stack:is_empty() then
-				local p = {x=pos.x+math.random(0, 10)/10-0.5, y=pos.y, z=pos.z+math.random(0, 10)/10-0.5}
+				local p = { x = pos.x + math.random(0, 10) / 10 - 0.5, y = pos.y,
+					z = pos.z + math.random(0, 10) / 10 - 0.5 }
 				minetest.add_item(p, stack)
 			end
 		end
@@ -528,7 +552,7 @@ minetest.register_node("mcl_furnaces:furnace_active", {
 	paramtype = "light",
 	light_source = LIGHT_ACTIVE_FURNACE,
 	drop = "mcl_furnaces:furnace",
-	groups = {pickaxey=1, container=4, deco_block=1, not_in_creative_inventory=1, material_stone=1},
+	groups = { pickaxey = 1, container = 4, deco_block = 1, not_in_creative_inventory = 1, material_stone = 1 },
 	is_ground_content = false,
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 	on_timer = furnace_node_timer,
@@ -538,10 +562,11 @@ minetest.register_node("mcl_furnaces:furnace_active", {
 		local meta2 = meta
 		meta:from_table(oldmetadata)
 		local inv = meta:get_inventory()
-		for _, listname in ipairs({"src", "dst", "fuel"}) do
+		for _, listname in ipairs({ "src", "dst", "fuel" }) do
 			local stack = inv:get_stack(listname, 1)
 			if not stack:is_empty() then
-				local p = {x=pos.x+math.random(0, 10)/10-0.5, y=pos.y, z=pos.z+math.random(0, 10)/10-0.5}
+				local p = { x = pos.x + math.random(0, 10) / 10 - 0.5, y = pos.y,
+					z = pos.z + math.random(0, 10) / 10 - 0.5 }
 				minetest.add_item(p, stack)
 			end
 		end
@@ -573,7 +598,7 @@ minetest.register_craft({
 	output = "mcl_furnaces:furnace",
 	recipe = {
 		{ "group:cobble", "group:cobble", "group:cobble" },
-		{ "group:cobble", "", "group:cobble" },
+		{ "group:cobble", "",             "group:cobble" },
 		{ "group:cobble", "group:cobble", "group:cobble" },
 	}
 })
@@ -586,7 +611,7 @@ end
 minetest.register_lbm({
 	label = "Active furnace flame particles",
 	name = "mcl_furnaces:flames",
-	nodenames = {"mcl_furnaces:furnace_active"},
+	nodenames = { "mcl_furnaces:furnace_active" },
 	run_at_every_load = true,
 	action = function(pos, node)
 		spawn_flames(pos, node.param2)

mods/ITEMS/mcl_grindstone/init.lua

@@ -1,37 +1,52 @@
 -- Code based from mcl_anvils
 
 local S = minetest.get_translator(minetest.get_current_modname())
+local F = minetest.formspec_escape
+local C = minetest.colorize
 
 local MAX_WEAR = 65535
 
--- formspecs
-local function get_grindstone_formspec()
-	return "size[9,8.75]"..
-	"image[3,1.5;1.5,1;gui_crafting_arrow.png]"..
-	"label[0,4.0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Inventory"))).."]"..
-	"label[1,0.1;"..minetest.formspec_escape(minetest.colorize("#313131", S("Repair & Disenchant"))).."]"..
-	"list[context;main;0,0;8,4;]"..
-	"list[current_player;main;0,4.5;9,3;9]"..
-	mcl_formspec.get_itemslot_bg(0,4.5,9,3)..
-	"list[current_player;main;0,7.74;9,1;]"..
-	mcl_formspec.get_itemslot_bg(0,7.74,9,1)..
-	"list[context;input;1,1;1,1;]"..
-	mcl_formspec.get_itemslot_bg(1,1,1,1)..
-	"list[context;input;1,2;1,1;1]"..
-	mcl_formspec.get_itemslot_bg(1,2,1,1)..
-	"list[context;output;6,1.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(6,1.5,1,1)..
-	"listring[context;output]"..
-	"listring[current_player;main]"..
-	"listring[context;input]"..
-	"listring[current_player;main]"
-end
+local grindstone_formspec = table.concat({
+	"formspec_version[6]",
+	"size[11.75,10.425]",
+
+	"label[0.375,0.375;" .. F(C(mcl_formspec.label_color, S("Repair & Disenchant"))) .. "]",
+
+	mcl_formspec.get_itemslot_bg_v4(2.875, 1.25, 1, 1),
+	"list[context;input;2.875,1.25;1,1;]",
+
+	mcl_formspec.get_itemslot_bg_v4(2.875, 2.625, 1, 1),
+	"list[context;input;2.875,2.625;1,1;1]",
+
+	"image[2.375,1;2,2.875;grindstone_gui_9.png;2]",
+
+	"image[1.875,1.5;0.5,2.875;grindstone_gui_9.png;2]",
+	"image[4.375,1.5;0.5,2.875;grindstone_gui_9.png;2]",
+
+	"image[5.5,1.95;1.5,1;gui_crafting_arrow.png]",
+
+	mcl_formspec.get_itemslot_bg_v4(7.875, 1.9375, 1, 1),
+	"list[context;output;7.875,1.9375;1,1;]",
+
+	"label[0.375,4.7;" .. F(C(mcl_formspec.label_color, S("Inventory"))) .. "]",
+
+	mcl_formspec.get_itemslot_bg_v4(0.375, 5.1, 9, 3),
+	"list[current_player;main;0.375,5.1;9,3;9]",
+
+	mcl_formspec.get_itemslot_bg_v4(0.375, 9.05, 9, 1),
+	"list[current_player;main;0.375,9.05;9,1;]",
+
+	"listring[context;output]",
+	"listring[current_player;main]",
+	"listring[context;input]",
+	"listring[current_player;main]",
+})
 
 -- Creates a new item with the wear of the items and custom name
 local function create_new_item(name_item, meta, wear)
 	local new_item = ItemStack(name_item)
 	if wear ~= nil then
-			new_item:set_wear(wear)
+		new_item:set_wear(wear)
 	end
 	local new_meta = new_item:get_meta()
 	new_meta:set_string("name", meta:get_string("name"))
@@ -86,7 +101,6 @@ local function fix_stack_size(stack)
 	return count
 end
 
-
 -- Update the inventory slots of an grindstone node.
 -- meta: Metadata of grindstone node
 local function update_grindstone_slots(meta)
@@ -122,8 +136,8 @@ local function update_grindstone_slots(meta)
 		else
 			new_output = ""
 		end
-	-- Check if at least one input has an item
-	-- Check if the item is's an enchanted book or tool
+		-- Check if at least one input has an item
+		-- Check if the item is's an enchanted book or tool
 	elseif (not input1:is_empty() and input2:is_empty()) or (input1:is_empty() and not input2:is_empty()) then
 		if input2:is_empty() then
 			local def1 = input1:get_definition()
@@ -168,10 +182,10 @@ end
 -- Drop any items inside the grindstone if destroyed
 local function drop_grindstone_items(pos, meta)
 	local inv = meta:get_inventory()
-	for i=1, inv:get_size("input") do
+	for i = 1, inv:get_size("input") do
 		local stack = inv:get_stack("input", i)
 		if not stack:is_empty() then
-			local p = {x=pos.x+math.random(0, 10)/10-0.5, y=pos.y, z=pos.z+math.random(0, 10)/10-0.5}
+			local p = { x = pos.x + math.random(0, 10) / 10 - 0.5, y = pos.y, z = pos.z + math.random(0, 10) / 10 - 0.5 }
 			minetest.add_item(p, stack)
 		end
 	end
@@ -181,11 +195,11 @@ local node_box = {
 	type = "fixed",
 	-- created with nodebox editor
 	fixed = {
-		{-0.25, -0.25, -0.375, 0.25, 0.5, 0.375},
-		{-0.375, -0.0625, -0.1875, -0.25, 0.3125, 0.1875},
-		{0.25, -0.0625, -0.1875, 0.375, 0.3125, 0.1875},
-		{0.25, -0.5, -0.125, 0.375, -0.0625, 0.125},
-		{-0.375, -0.5, -0.125, -0.25, -0.0625, 0.125},
+		{ -0.25, -0.25, -0.375, 0.25, 0.5, 0.375 },
+		{ -0.375, -0.0625, -0.1875, -0.25, 0.3125, 0.1875 },
+		{ 0.25, -0.0625, -0.1875, 0.375, 0.3125, 0.1875 },
+		{ 0.25, -0.5, -0.125, 0.375, -0.0625, 0.125 },
+		{ -0.375, -0.5, -0.125, -0.25, -0.0625, 0.125 },
 	}
 }
 
@@ -193,11 +207,11 @@ minetest.register_node("mcl_grindstone:grindstone", {
 	description = S("Grindstone"),
 	_tt_help = S("Used to disenchant/fix tools"),
 	_doc_items_longdesc = S("Grindstone disenchants tools and armour except for curses, and repairs two items of the same type it is also the weapon smith's work station."),
-	_doc_items_usagehelp = S("To use the grindstone, rightclick it, Two input slots (on the left) and a single output slot.").."\n"..
-	S("To disenchant an item place enchanted item in one of the input slots and take the disenchanted item from the output.").."\n"..
-	S("To repair a tool you need a tool of the same type and material, put both items in the input slot and the output slot will combine two items durabilities with 5% bonus.").."\n"..
-	S("If both items have enchantments the player will get xp from both items from the disenchant.").."\n"..
-	S("Curses cannot be removed and will be transfered to the new repaired item, if both items have a different curse the curses will be combined."),
+	_doc_items_usagehelp = S("To use the grindstone, rightclick it, Two input slots (on the left) and a single output slot.") .. "\n" ..
+		S("To disenchant an item place enchanted item in one of the input slots and take the disenchanted item from the output.") .. "\n" ..
+		S("To repair a tool you need a tool of the same type and material, put both items in the input slot and the output slot will combine two items durabilities with 5% bonus.") .. "\n" ..
+		S("If both items have enchantments the player will get xp from both items from the disenchant.") .. "\n" ..
+		S("Curses cannot be removed and will be transfered to the new repaired item, if both items have a different curse the curses will be combined."),
 	tiles = {
 		"grindstone_top.png",
 		"grindstone_top.png",
@@ -212,7 +226,7 @@ minetest.register_node("mcl_grindstone:grindstone", {
 	selection_box = node_box,
 	collision_box = node_box,
 	sounds = mcl_sounds.node_sound_stone_defaults(),
-	groups = {pickaxey = 1, deco_block = 1},
+	groups = { pickaxey = 1, deco_block = 1 },
 
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
 		local meta = minetest.get_meta(pos)
@@ -268,7 +282,7 @@ minetest.register_node("mcl_grindstone:grindstone", {
 		local meta = minetest.get_meta(pos)
 		if from_list == "output" and to_list == "input" then
 			local inv = meta:get_inventory()
-			for i=1, inv:get_size("input") do
+			for i = 1, inv:get_size("input") do
 				if i ~= to_index then
 					local istack = inv:get_stack("input", i)
 					istack:set_count(math.max(0, istack:get_count() - count))
@@ -289,8 +303,8 @@ minetest.register_node("mcl_grindstone:grindstone", {
 			if not input1:is_empty() and not input2:is_empty() then
 				-- Get xp earnt from the enchanted items
 				xp_earnt = calculate_xp(input1) + calculate_xp(input1)
-				input1:take_item()
-				input2:take_item()
+				input1:take_item(1)
+				input2:take_item(1)
 				inv:set_stack("input", 1, input1)
 				inv:set_stack("input", 2, input2)
 			else
@@ -320,14 +334,13 @@ minetest.register_node("mcl_grindstone:grindstone", {
 		local inv = meta:get_inventory()
 		inv:set_size("input", 2)
 		inv:set_size("output", 1)
-		local form = get_grindstone_formspec()
-		meta:set_string("formspec", form)
+		meta:set_string("formspec", grindstone_formspec)
 	end,
 	on_rightclick = function(pos, node, player, itemstack)
 		if not player:get_player_control().sneak then
 			local meta = minetest.get_meta(pos)
 			update_grindstone_slots(meta)
-			meta:set_string("formspec", get_grindstone_formspec())
+			meta:set_string("formspec", grindstone_formspec)
 		end
 	end,
 	_mcl_blast_resistance = 6,
@@ -337,7 +350,7 @@ minetest.register_node("mcl_grindstone:grindstone", {
 minetest.register_craft({
 	output = "mcl_grindstone:grindstone",
 	recipe = {
-		{ "mcl_core:stick", "mcl_stairs:slab_stone_rough", "mcl_core:stick"},
-		{ "group:wood", "", "group:wood"},
+		{ "mcl_core:stick", "mcl_stairs:slab_stone_rough", "mcl_core:stick" },
+		{ "group:wood", "", "group:wood" },
 	}
 })

mods/ITEMS/mcl_hoppers/init.lua

@@ -12,15 +12,22 @@ end
 --[[ BEGIN OF NODE DEFINITIONS ]]
 
 local mcl_hoppers_formspec = table.concat({
-	"size[9,7]",
-	"label[2,0;" .. F(C("#313131", S("Hopper"))) .. "]",
-	"list[context;main;2,0.5;5,1;]",
-	mcl_formspec.get_itemslot_bg(2, 0.5, 5, 1),
-	"label[0,2;" .. F(C("#313131", S("Inventory"))) .. "]",
-	"list[current_player;main;0,2.5;9,3;9]",
-	mcl_formspec.get_itemslot_bg(0, 2.5, 9, 3),
-	"list[current_player;main;0,5.74;9,1;]",
-	mcl_formspec.get_itemslot_bg(0, 5.74, 9, 1),
+	"formspec_version[4]",
+	"size[11.75,8.175]",
+
+	"label[0.375,0.375;" .. F(C(mcl_formspec.label_color, S("Hopper"))) .. "]",
+
+	mcl_formspec.get_itemslot_bg_v4(2.875, 0.75, 5, 1),
+	"list[context;main;2.875,0.75;5,1;]",
+
+	"label[0.375,2.45;" .. F(C(mcl_formspec.label_color, S("Inventory"))) .. "]",
+
+	mcl_formspec.get_itemslot_bg_v4(0.375, 2.85, 9, 3),
+	"list[current_player;main;0.375,2.85;9,3;9]",
+
+	mcl_formspec.get_itemslot_bg_v4(0.375, 6.8, 9, 1),
+	"list[current_player;main;0.375,6.8;9,1;]",
+
 	"listring[context;main]",
 	"listring[current_player;main]",
 })
@@ -31,7 +38,7 @@ local mcl_hoppers_formspec = table.concat({
 local def_hopper = {
 	inventory_image = "mcl_hoppers_item.png",
 	wield_image = "mcl_hoppers_item.png",
-	groups = {pickaxey = 1, container = 2, deco_block = 1, hopper = 1},
+	groups = { pickaxey = 1, container = 2, deco_block = 1, hopper = 1 },
 	drawtype = "nodebox",
 	paramtype = "light",
 	-- FIXME: mcl_hoppers_hopper_inside.png is unused by hoppers.
@@ -47,25 +54,25 @@ local def_hopper = {
 		type = "fixed",
 		fixed = {
 			--funnel walls
-			{-0.5, 0.0, 0.4, 0.5, 0.5, 0.5},
-			{0.4, 0.0, -0.5, 0.5, 0.5, 0.5},
-			{-0.5, 0.0, -0.5, -0.4, 0.5, 0.5},
-			{-0.5, 0.0, -0.5, 0.5, 0.5, -0.4},
+			{ -0.5, 0.0, 0.4, 0.5, 0.5, 0.5 },
+			{ 0.4, 0.0, -0.5, 0.5, 0.5, 0.5 },
+			{ -0.5, 0.0, -0.5, -0.4, 0.5, 0.5 },
+			{ -0.5, 0.0, -0.5, 0.5, 0.5, -0.4 },
 			--funnel base
-			{-0.5, 0.0, -0.5, 0.5, 0.1, 0.5},
+			{ -0.5, 0.0, -0.5, 0.5, 0.1, 0.5 },
 			--spout
-			{-0.3, -0.3, -0.3, 0.3, 0.0, 0.3},
-			{-0.1, -0.3, -0.1, 0.1, -0.5, 0.1},
+			{ -0.3, -0.3, -0.3, 0.3, 0.0, 0.3 },
+			{ -0.1, -0.3, -0.1, 0.1, -0.5, 0.1 },
 		},
 	},
 	selection_box = {
 		type = "fixed",
 		fixed = {
 			--funnel
-			{-0.5, 0.0, -0.5, 0.5, 0.5, 0.5},
+			{ -0.5, 0.0, -0.5, 0.5, 0.5, 0.5 },
 			--spout
-			{-0.3, -0.3, -0.3, 0.3, 0.0, 0.3},
-			{-0.1, -0.3, -0.1, 0.1, -0.5, 0.1},
+			{ -0.3, -0.3, -0.3, 0.3, 0.0, 0.3 },
+			{ -0.1, -0.3, -0.1, 0.1, -0.5, 0.1 },
 		},
 	},
 	is_ground_content = false,
@@ -248,25 +255,25 @@ local def_hopper_side = {
 		type = "fixed",
 		fixed = {
 			--funnel walls
-			{-0.5, 0.0, 0.4, 0.5, 0.5, 0.5},
-			{0.4, 0.0, -0.5, 0.5, 0.5, 0.5},
-			{-0.5, 0.0, -0.5, -0.4, 0.5, 0.5},
-			{-0.5, 0.0, -0.5, 0.5, 0.5, -0.4},
+			{ -0.5, 0.0, 0.4, 0.5, 0.5, 0.5 },
+			{ 0.4, 0.0, -0.5, 0.5, 0.5, 0.5 },
+			{ -0.5, 0.0, -0.5, -0.4, 0.5, 0.5 },
+			{ -0.5, 0.0, -0.5, 0.5, 0.5, -0.4 },
 			--funnel base
-			{-0.5, 0.0, -0.5, 0.5, 0.1, 0.5},
+			{ -0.5, 0.0, -0.5, 0.5, 0.1, 0.5 },
 			--spout
-			{-0.3, -0.3, -0.3, 0.3, 0.0, 0.3},
-			{-0.5, -0.3, -0.1, 0.1, -0.1, 0.1},
+			{ -0.3, -0.3, -0.3, 0.3, 0.0, 0.3 },
+			{ -0.5, -0.3, -0.1, 0.1, -0.1, 0.1 },
 		},
 	},
 	selection_box = {
 		type = "fixed",
 		fixed = {
 			--funnel
-			{-0.5, 0.0, -0.5, 0.5, 0.5, 0.5},
+			{ -0.5, 0.0, -0.5, 0.5, 0.5, 0.5 },
 			--spout
-			{-0.3, -0.3, -0.3, 0.3, 0.0, 0.3},
-			{-0.5, -0.3, -0.1, 0.1, -0.1, 0.1},
+			{ -0.3, -0.3, -0.3, 0.3, 0.0, 0.3 },
+			{ -0.5, -0.3, -0.1, 0.1, -0.1, 0.1 },
 		},
 	},
 	is_ground_content = false,
@@ -559,8 +566,8 @@ end
 
 minetest.register_abm({
 	label = "Hopper/container item exchange",
-	nodenames = {"mcl_hoppers:hopper"},
-	neighbors = {"group:container"},
+	nodenames = { "mcl_hoppers:hopper" },
+	neighbors = { "group:container" },
 	interval = 1.0,
 	chance = 1,
 	action = function(pos, node, active_object_count, active_object_count_wider)
@@ -591,8 +598,8 @@ minetest.register_abm({
 
 minetest.register_abm({
 	label = "Side-hopper/container item exchange",
-	nodenames = {"mcl_hoppers:hopper_side"},
-	neighbors = {"group:container"},
+	nodenames = { "mcl_hoppers:hopper_side" },
+	neighbors = { "group:container" },
 	interval = 1.0,
 	chance = 1,
 	action = function(pos, node, active_object_count, active_object_count_wider)

mods/ITEMS/mcl_smithing_table/init.lua

@@ -1,11 +1,13 @@
---[[
-By EliasFleckenstein03 and Code-Sploit
-]]
+-- By EliasFleckenstein03 and Code-Sploit
 
 local S = minetest.get_translator("mcl_smithing_table")
+local F = minetest.formspec_escape
+local C = minetest.colorize
+
 mcl_smithing_table = {}
 
--- Function to upgrade diamond tool/armor to netherite tool/armor
+---Function to upgrade diamond tool/armor to netherite tool/armor
+---@param itemstack ItemStack
 function mcl_smithing_table.upgrade_item(itemstack)
 	local def = itemstack:get_definition()
 
@@ -29,28 +31,48 @@ function mcl_smithing_table.upgrade_item(itemstack)
 	return itemstack
 end
 
--- Badly copied over from mcl_anvils
--- ToDo: Make better formspec
+local formspec = table.concat({
+	"formspec_version[4]",
+	"size[11.75,10.425]",
 
-local formspec = "size[9,9]" ..
-		"background[-0.19,-0.25;9.41,9.49;mcl_smithing_table_inventory.png]"..
-		"label[0,4.0;" .. minetest.formspec_escape(minetest.colorize(mcl_colors.DARK_GRAY, S("Inventory"))) .. "]" ..
-		"list[current_player;main;0,4.5;9,3;9]" ..
-		mcl_formspec.get_itemslot_bg(0,4.5,9,3) ..
-		"list[current_player;main;0,7.74;9,1;]" ..
-		mcl_formspec.get_itemslot_bg(0,7.74,9,1) ..
-		"list[context;diamond_item;1,2.5;1,1;]" ..
-		mcl_formspec.get_itemslot_bg(1,2.5,1,1) ..
-		"list[context;netherite;4,2.5;1,1;]" ..
-		mcl_formspec.get_itemslot_bg(4,2.5,1,1) ..
-		"list[context;upgraded_item;8,2.5;1,1;]" ..
-		mcl_formspec.get_itemslot_bg(8,2.5,1,1) ..
-		"label[3,0.1;" .. minetest.formspec_escape(minetest.colorize(mcl_colors.DARK_GRAY, S("Upgrade Gear"))) .. "]" ..
-		"listring[context;output]"..
-		"listring[current_player;main]"..
-		"listring[context;input]"..
-		"listring[current_player;main]"
+	"label[4.125,0.375;" .. F(C(mcl_formspec.label_color, S("Upgrade Gear"))) .. "]",
 
+	"image[0.875,0.375;1.75,1.75;mcl_smithing_table_inventory_hammer.png]",
+
+	mcl_formspec.get_itemslot_bg_v4(1.625, 2.6, 1, 1),
+	"list[context;diamond_item;1.625,2.6;1,1;]",
+
+	"image[3.5,2.6;1,1;mcl_anvils_inventory_cross.png]",
+
+	mcl_formspec.get_itemslot_bg_v4(5.375, 2.6, 1, 1),
+	"list[context;netherite;5.375,2.6;1,1;]",
+
+	"image[6.75,2.6;2,1;mcl_anvils_inventory_arrow.png]",
+
+	mcl_formspec.get_itemslot_bg_v4(9.125, 2.6, 1, 1),
+	"list[context;upgraded_item;9.125,2.6;1,1;]",
+
+	-- Player Inventory
+
+	mcl_formspec.get_itemslot_bg_v4(0.375, 5.1, 9, 3),
+	"list[current_player;main;0.375,5.1;9,3;9]",
+
+	mcl_formspec.get_itemslot_bg_v4(0.375, 9.05, 9, 1),
+	"list[current_player;main;0.375,9.05;9,1;]",
+
+	-- Listrings
+
+	"listring[context;diamond_item]",
+	"listring[current_player;main]",
+	"listring[context;netherite]",
+	"listring[current_player;main]",
+	"listring[context;upgraded_item]",
+	"listring[current_player;main]",
+	"listring[current_player;main]",
+	"listring[context;diamond_item]",
+})
+
+---@param pos Vector
 local function reset_upgraded_item(pos)
 	local inv = minetest.get_meta(pos):get_inventory()
 	local upgraded_item
@@ -66,8 +88,7 @@ minetest.register_node("mcl_smithing_table:table", {
 	description = S("Smithing table"),
 	-- ToDo: Add _doc_items_longdesc and _doc_items_usagehelp
 
-	stack_max = 64,
-	groups = {pickaxey = 2, deco_block = 1},
+	groups = { pickaxey = 2, deco_block = 1 },
 
 	tiles = {
 		"mcl_smithing_table_top.png",
@@ -92,7 +113,8 @@ minetest.register_node("mcl_smithing_table:table", {
 	end,
 
 	allow_metadata_inventory_put = function(pos, listname, index, stack, player)
-		if listname == "diamond_item" and mcl_smithing_table.upgrade_item(stack) or listname == "netherite" and stack:get_name() == "mcl_nether:netherite_ingot" then
+		if listname == "diamond_item" and mcl_smithing_table.upgrade_item(stack) or
+			listname == "netherite" and stack:get_name() == "mcl_nether:netherite_ingot" then
 			return stack:get_count()
 		end
 
@@ -119,7 +141,7 @@ minetest.register_node("mcl_smithing_table:table", {
 			take_item("netherite")
 
 			-- ToDo: make epic sound
-			minetest.sound_play("mcl_smithing_table_upgrade", {pos = pos, max_hear_distance = 16})
+			minetest.sound_play("mcl_smithing_table_upgrade", { pos = pos, max_hear_distance = 16 })
 		end
 		if listname == "upgraded_item" then
 			if stack:get_name() == "mcl_farming:hoe_netherite" then
@@ -138,8 +160,8 @@ minetest.register_node("mcl_smithing_table:table", {
 minetest.register_craft({
 	output = "mcl_smithing_table:table",
 	recipe = {
-		{"mcl_core:iron_ingot", "mcl_core:iron_ingot", ""},
-		{"group:wood", "group:wood", ""},
-		{"group:wood", "group:wood", ""}
-	}
+		{ "mcl_core:iron_ingot", "mcl_core:iron_ingot", "" },
+		{ "group:wood", "group:wood", "" },
+		{ "group:wood", "group:wood", "" }
+	},
 })

mods/ITEMS/mcl_smithing_table/mod.conf

@@ -1,2 +1,2 @@
 name = mcl_smithing_table
-depends = mcl_colors, mcl_formspec
+depends = mcl_colors, mcl_formspec, mcl_anvils

mods/ITEMS/mcl_smoker/init.lua

@@ -1,5 +1,6 @@
-
 local S = minetest.get_translator(minetest.get_current_modname())
+local C = minetest.colorize
+local F = minetest.formspec_escape
 
 local LIGHT_ACTIVE_FURNACE = 13
 
@@ -8,60 +9,82 @@ local LIGHT_ACTIVE_FURNACE = 13
 --
 
 local function active_formspec(fuel_percent, item_percent)
-	return "size[9,8.75]"..
-	"label[0,4;"..minetest.formspec_escape(minetest.colorize("#313131", S("Inventory"))).."]"..
-	"list[current_player;main;0,4.5;9,3;9]"..
-	mcl_formspec.get_itemslot_bg(0,4.5,9,3)..
-	"list[current_player;main;0,7.74;9,1;]"..
-	mcl_formspec.get_itemslot_bg(0,7.74,9,1)..
-	"label[2.75,0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Smoker"))).."]"..
-	"list[context;src;2.75,0.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(2.75,0.5,1,1)..
-	"list[context;fuel;2.75,2.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(2.75,2.5,1,1)..
-	"list[context;dst;5.75,1.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(5.75,1.5,1,1)..
-	"image[2.75,1.5;1,1;default_furnace_fire_bg.png^[lowpart:"..
-	(100-fuel_percent)..":default_furnace_fire_fg.png]"..
-	"image[4.1,1.5;1.5,1;gui_furnace_arrow_bg.png^[lowpart:"..
-	(item_percent)..":gui_furnace_arrow_fg.png^[transformR270]"..
-	-- Craft guide button temporarily removed due to Minetest bug.
-	-- TODO: Add it back when the Minetest bug is fixed.
-	--"image_button[8,0;1,1;craftguide_book.png;craftguide;]"..
-	--"tooltip[craftguide;"..minetest.formspec_escape(S("Recipe book")).."]"..
-	"listring[context;dst]"..
-	"listring[current_player;main]"..
-	"listring[context;src]"..
-	"listring[current_player;main]"..
-	"listring[context;fuel]"..
-	"listring[current_player;main]"
+	return table.concat({
+		"formspec_version[4]",
+		"size[11.75,10.425]",
+		"label[0.375,0.375;" .. F(C(mcl_formspec.label_color, S("Smoker"))) .. "]",
+		mcl_formspec.get_itemslot_bg_v4(3.5, 0.75, 1, 1),
+		"list[context;src;3.5,0.75;1,1;]",
+
+		"image[3.5,2;1,1;default_furnace_fire_bg.png^[lowpart:" ..
+		(100 - fuel_percent) .. ":default_furnace_fire_fg.png]",
+
+		mcl_formspec.get_itemslot_bg_v4(3.5, 3.25, 1, 1),
+		"list[context;fuel;3.5,3.25;1,1;]",
+
+		"image[5.25,2;1.5,1;gui_furnace_arrow_bg.png^[lowpart:" ..
+		(item_percent) .. ":gui_furnace_arrow_fg.png^[transformR270]",
+		mcl_formspec.get_itemslot_bg_v4(7.875, 2, 1, 1, 0.2),
+		"list[context;dst;7.875,2;1,1;]",
+
+		"label[0.375,4.7;" .. F(C(mcl_formspec.label_color, S("Inventory"))) .. "]",
+		mcl_formspec.get_itemslot_bg_v4(0.375, 5.1, 9, 3),
+		"list[current_player;main;0.375,5.1;9,3;9]",
+
+		mcl_formspec.get_itemslot_bg_v4(0.375, 9.05, 9, 1),
+		"list[current_player;main;0.375,9.05;9,1;]",
+
+		-- Craft guide button temporarily removed due to Minetest bug.
+		-- TODO: Add it back when the Minetest bug is fixed.
+		--"image_button[8,0;1,1;craftguide_book.png;craftguide;]"..
+		--"tooltip[craftguide;"..minetest.formspec_escape(S("Recipe book")).."]"..
+
+		"listring[context;dst]",
+		"listring[current_player;main]",
+		"listring[context;src]",
+		"listring[current_player;main]",
+		"listring[context;fuel]",
+		"listring[current_player;main]",
+	})
 end
 
-local inactive_formspec = "size[9,8.75]"..
-	"label[0,4;"..minetest.formspec_escape(minetest.colorize("#313131", S("Inventory"))).."]"..
-	"list[current_player;main;0,4.5;9,3;9]"..
-	mcl_formspec.get_itemslot_bg(0,4.5,9,3)..
-	"list[current_player;main;0,7.74;9,1;]"..
-	mcl_formspec.get_itemslot_bg(0,7.74,9,1)..
-	"label[2.75,0;"..minetest.formspec_escape(minetest.colorize("#313131", S("Smoker"))).."]"..
-	"list[context;src;2.75,0.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(2.75,0.5,1,1)..
-	"list[context;fuel;2.75,2.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(2.75,2.5,1,1)..
-	"list[context;dst;5.75,1.5;1,1;]"..
-	mcl_formspec.get_itemslot_bg(5.75,1.5,1,1)..
-	"image[2.75,1.5;1,1;default_furnace_fire_bg.png]"..
-	"image[4.1,1.5;1.5,1;gui_furnace_arrow_bg.png^[transformR270]"..
+local inactive_formspec = table.concat({
+	"formspec_version[4]",
+	"size[11.75,10.425]",
+	"label[0.375,0.375;" .. F(C(mcl_formspec.label_color, S("Smoker"))) .. "]",
+	mcl_formspec.get_itemslot_bg_v4(3.5, 0.75, 1, 1),
+	"list[context;src;3.5,0.75;1,1;]",
+
+	"image[3.5,2;1,1;default_furnace_fire_bg.png]",
+
+	mcl_formspec.get_itemslot_bg_v4(3.5, 3.25, 1, 1),
+	"list[context;fuel;3.5,3.25;1,1;]",
+
+	"image[5.25,2;1.5,1;gui_furnace_arrow_bg.png^[transformR270]",
+
+	mcl_formspec.get_itemslot_bg_v4(7.875, 2, 1, 1, 0.2),
+	"list[context;dst;7.875,2;1,1;]",
+
+	"label[0.375,4.7;" .. F(C(mcl_formspec.label_color, S("Inventory"))) .. "]",
+	mcl_formspec.get_itemslot_bg_v4(0.375, 5.1, 9, 3),
+	"list[current_player;main;0.375,5.1;9,3;9]",
+
+	mcl_formspec.get_itemslot_bg_v4(0.375, 9.05, 9, 1),
+	"list[current_player;main;0.375,9.05;9,1;]",
+
 	-- Craft guide button temporarily removed due to Minetest bug.
 	-- TODO: Add it back when the Minetest bug is fixed.
 	--"image_button[8,0;1,1;craftguide_book.png;craftguide;]"..
 	--"tooltip[craftguide;"..minetest.formspec_escape(S("Recipe book")).."]"..
-	"listring[context;dst]"..
-	"listring[current_player;main]"..
-	"listring[context;src]"..
-	"listring[current_player;main]"..
-	"listring[context;fuel]"..
-	"listring[current_player;main]"
+
+	"listring[context;dst]",
+	"listring[current_player;main]",
+	"listring[context;src]",
+	"listring[current_player;main]",
+	"listring[context;fuel]",
+	"listring[current_player;main]",
+})
+
 
 local receive_fields = function(pos, formname, fields, sender)
 	if fields.craftguide then
@@ -71,7 +94,7 @@ end
 
 local function give_xp(pos, player)
 	local meta = minetest.get_meta(pos)
-	local dir = vector.divide(minetest.facedir_to_dir(minetest.get_node(pos).param2),-1.95)
+	local dir = vector.divide(minetest.facedir_to_dir(minetest.get_node(pos).param2), -1.95)
 	local xp = meta:get_int("xp")
 	if xp > 0 then
 		if player then
@@ -98,7 +121,7 @@ local function allow_metadata_inventory_put(pos, listname, index, stack, player)
 		-- Test stack with size 1 because we burn one fuel at a time
 		local teststack = ItemStack(stack)
 		teststack:set_count(1)
-		local output, decremented_input = minetest.get_craft_result({method="fuel", width=1, items={teststack}})
+		local output, decremented_input = minetest.get_craft_result({ method = "fuel", width = 1, items = { teststack } })
 		if output.time ~= 0 then
 			-- Only allow to place 1 item if fuel get replaced by recipe.
 			-- This is the case for lava buckets.
@@ -292,7 +315,7 @@ local function smoker_node_timer(pos, elapsed)
 
 		-- Check if we have cookable content: cookable
 		local aftercooked
-		cooked, aftercooked = minetest.get_craft_result({method = "cooking", width = 1, items = srclist})
+		cooked, aftercooked = minetest.get_craft_result({ method = "cooking", width = 1, items = srclist })
 		cookable = minetest.get_item_group(inv:get_stack("src", 1):get_name(), "smoker_cookable") == 1
 		if cookable then
 			-- Successful cooking requires space in dst slot and time
@@ -310,7 +333,7 @@ local function smoker_node_timer(pos, elapsed)
 		if cookable and not active then
 			-- We need to get new fuel
 			local afterfuel
-			fuel, afterfuel = minetest.get_craft_result({method = "fuel", width = 1, items = fuellist})
+			fuel, afterfuel = minetest.get_craft_result({ method = "fuel", width = 1, items = fuellist })
 
 			if fuel.time == 0 then
 				-- No valid fuel in fuel list -- stop
@@ -343,7 +366,7 @@ local function smoker_node_timer(pos, elapsed)
 				srclist = inv:get_list("src")
 				src_time = 0
 
-				meta:set_int("xp", meta:get_int("xp") + 1)		-- ToDo give each recipe an idividial XP count
+				meta:set_int("xp", meta:get_int("xp") + 1) -- ToDo give each recipe an idividial XP count
 			end
 		end
 
@@ -390,9 +413,9 @@ local function smoker_node_timer(pos, elapsed)
 	meta:set_float("fuel_time", fuel_time)
 	meta:set_float("src_time", src_time)
 	if srclist then
-		 meta:set_string("src_item", src_item)
+		meta:set_string("src_item", src_item)
 	else
-		 meta:set_string("src_item", "")
+		meta:set_string("src_item", "")
 	end
 	meta:set_string("formspec", formspec)
 
@@ -415,13 +438,14 @@ end
 minetest.register_node("mcl_smoker:smoker", {
 	description = S("Smoker"),
 	_tt_help = S("Cooks food faster than furnace"),
-	_doc_items_longdesc = S("Smokers cook several items, mainly raw foods, into cooked foods, but twice as fast as a normal furnace."),
+	_doc_items_longdesc = S(
+		"Smokers cook several items, mainly raw foods, into cooked foods, but twice as fast as a normal furnace."),
 	_doc_items_usagehelp =
-			S("Use the smoker to open the furnace menu.").."\n"..
-            S("Place a furnace fuel in the lower slot and the source material in the upper slot.").."\n"..
-            S("The smoker will slowly use its fuel to smelt the item.").."\n"..
-            S("The result will be placed into the output slot at the right side.").."\n"..
-			S("Use the recipe book to see what foods you can smelt, what you can use as fuel and how long it will burn."),
+		S("Use the smoker to open the furnace menu.") .. "\n" ..
+		S("Place a furnace fuel in the lower slot and the source material in the upper slot.") .. "\n" ..
+		S("The smoker will slowly use its fuel to smelt the item.") .. "\n" ..
+		S("The result will be placed into the output slot at the right side.") .. "\n" ..
+		S("Use the recipe book to see what foods you can smelt, what you can use as fuel and how long it will burn."),
 	_doc_items_hidden = false,
 	tiles = {
 		"smoker_top.png", "smoker_bottom.png",
@@ -429,7 +453,7 @@ minetest.register_node("mcl_smoker:smoker", {
 		"smoker_side.png", "smoker_front.png"
 	},
 	paramtype2 = "facedir",
-	groups = {pickaxey=1, container=4, deco_block=1, material_stone=1},
+	groups = { pickaxey = 1, container = 4, deco_block = 1, material_stone = 1 },
 	is_ground_content = false,
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 
@@ -439,10 +463,14 @@ minetest.register_node("mcl_smoker:smoker", {
 		local meta2 = meta:to_table()
 		meta:from_table(oldmetadata)
 		local inv = meta:get_inventory()
-		for _, listname in ipairs({"src", "dst", "fuel"}) do
+		for _, listname in ipairs({ "src", "dst", "fuel" }) do
 			local stack = inv:get_stack(listname, 1)
 			if not stack:is_empty() then
-				local p = {x=pos.x+math.random(0, 10)/10-0.5, y=pos.y, z=pos.z+math.random(0, 10)/10-0.5}
+				local p = {
+					x = pos.x + math.random(0, 10) / 10 - 0.5,
+					y = pos.y,
+					z = pos.z + math.random(0, 10) / 10 - 0.5
+				}
 				minetest.add_item(p, stack)
 			end
 		end
@@ -499,14 +527,16 @@ minetest.register_node("mcl_smoker:smoker_active", {
 	tiles = {
 		"smoker_top.png", "smoker_bottom.png",
 		"smoker_side.png", "smoker_side.png",
-		"smoker_side.png", {name = "smoker_front_on.png",
-				animation = {type = "vertical_frames", aspect_w = 16, aspect_h = 16, length = 48}},
+		"smoker_side.png", {
+		name = "smoker_front_on.png",
+		animation = { type = "vertical_frames", aspect_w = 16, aspect_h = 16, length = 48 }
+	},
 	},
 	paramtype2 = "facedir",
 	paramtype = "light",
 	light_source = LIGHT_ACTIVE_FURNACE,
 	drop = "mcl_smoker:smoker",
-	groups = {pickaxey=1, container=4, deco_block=1, not_in_creative_inventory=1, material_stone=1},
+	groups = { pickaxey = 1, container = 4, deco_block = 1, not_in_creative_inventory = 1, material_stone = 1 },
 	is_ground_content = false,
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 	on_timer = smoker_node_timer,
@@ -516,10 +546,14 @@ minetest.register_node("mcl_smoker:smoker_active", {
 		local meta2 = meta
 		meta:from_table(oldmetadata)
 		local inv = meta:get_inventory()
-		for _, listname in ipairs({"src", "dst", "fuel"}) do
+		for _, listname in ipairs({ "src", "dst", "fuel" }) do
 			local stack = inv:get_stack(listname, 1)
 			if not stack:is_empty() then
-				local p = {x=pos.x+math.random(0, 10)/10-0.5, y=pos.y, z=pos.z+math.random(0, 10)/10-0.5}
+				local p = {
+					x = pos.x + math.random(0, 10) / 10 - 0.5,
+					y = pos.y,
+					z = pos.z + math.random(0, 10) / 10 - 0.5
+				}
 				minetest.add_item(p, stack)
 			end
 		end
@@ -550,9 +584,9 @@ minetest.register_node("mcl_smoker:smoker_active", {
 minetest.register_craft({
 	output = "mcl_smoker:smoker",
 	recipe = {
-		{ "", "group:tree", "" },
+		{ "",           "group:tree",           "" },
 		{ "group:tree", "mcl_furnaces:furnace", "group:tree" },
-		{ "", "group:tree", "" },
+		{ "",           "group:tree",           "" },
 	}
 })
 
@@ -564,7 +598,7 @@ end
 minetest.register_lbm({
 	label = "Active smoker flame particles",
 	name = "mcl_smoker:flames",
-	nodenames = {"mcl_smoker:smoker_active"},
+	nodenames = { "mcl_smoker:smoker_active" },
 	run_at_every_load = true,
 	action = function(pos, node)
 		spawn_flames(pos, node.param2)

mods/PLAYER/mcl_gamemode/API.md

@@ -0,0 +1,27 @@
+# `mcl_gamemode`
+
+## `mcl_gamemode.gamemodes`
+
+List of availlable gamemodes.
+
+Currently `{"survival", "creative"}`
+
+## `mcl_gamemode.get_gamemode(player)`
+
+Get the player's gamemode.
+
+Returns "survival" or "creative".
+
+## `mcl_gamemode.set_gamemode(player, gamemode)`
+
+Set the player's gamemode.
+
+gamemode: "survival" or "creative"
+
+## `mcl_gamemode.register_on_gamemode_change(function(player, old_gamemode, new_gamemode))`
+
+Register a function that will be called when `mcl_gamemode.set_gamemode` is called.
+
+## `mcl_gamemode.registered_on_gamemode_change`
+
+Map of registered on_gamemode_change.

mods/PLAYER/mcl_gamemode/init.lua

@@ -0,0 +1,84 @@
+local S = minetest.get_translator("mcl_gamemode")
+
+mcl_gamemode = {}
+
+mcl_gamemode.gamemodes = {
+	"survival",
+	"creative",
+}
+
+---@param n any
+---@param h table
+---@return boolean
+local function in_table(n, h)
+	for k, v in pairs(h) do
+		if v == n then return true end
+	end
+	return false
+end
+
+---@type fun(player: mt.PlayerObjectRef, old_gamemode: '"survival"'|'"creative"', new_gamemode: '"survival"'|'"creative"')[]
+mcl_gamemode.registered_on_gamemode_change = {}
+
+---@param func fun(player: mt.PlayerObjectRef, old_gamemode: '"survival"'|'"creative"', new_gamemode: '"survival"'|'"creative"')
+function mcl_gamemode.register_on_gamemode_change(func)
+	table.insert(mcl_gamemode.registered_on_gamemode_change, func)
+end
+
+---@param player mt.PlayerObjectRef
+---@param gamemode '"survival"'|'"creative"'
+function mcl_gamemode.set_gamemode(player, gamemode)
+	local meta = player:get_meta()
+	local old_gamemode = meta:get_string("gamemode")
+	meta:set_string("gamemode", gamemode)
+	for _, f in ipairs(mcl_gamemode.registered_on_gamemode_change) do
+		f(player, old_gamemode, gamemode)
+	end
+end
+
+local mt_is_creative_enabled = minetest.is_creative_enabled
+
+---@param player mt.PlayerObjectRef
+---@return '"survival"'|'"creative"'
+function mcl_gamemode.get_gamemode(player)
+	if mt_is_creative_enabled(player:get_player_name()) then
+		return "creative"
+	end
+	return player:get_meta():get_string("gamemode")
+end
+
+function minetest.is_creative_enabled(name)
+	if mt_is_creative_enabled(name) then return true end
+	if not name then return false end
+	local p = minetest.get_player_by_name(name)
+	if p then
+		return p:get_meta():get_string("gamemode") == "creative"
+	end
+	return false
+end
+
+minetest.register_chatcommand("gamemode", {
+	params = S("[<gamemode>] [<player>]"),
+	description = S("Change gamemode (survival/creative) for yourself or player"),
+	privs = { server = true },
+	func = function(n, param)
+		-- Full input validation ( just for @erlehmann <3 )
+		local p = minetest.get_player_by_name(n)
+		local args = param:split(" ")
+		if args[2] ~= nil then
+			p = minetest.get_player_by_name(args[2])
+		end
+		if not p then
+			return false, S("Player not online")
+		end
+		if args[1] ~= nil and not in_table(args[1], mcl_gamemode.gamemodes) then
+			return false, S("Gamemode " .. args[1] .. " does not exist.")
+		elseif args[1] ~= nil then
+			mcl_gamemode.set_gamemode(p, args[1])
+		end
+		--Result message - show effective game mode
+		local gm = p:get_meta():get_string("gamemode")
+		if gm == "" then gm = mcl_gamemode.gamemodes[1] end
+		return true, S("Gamemode for player ") .. n .. S(": " .. gm)
+	end
+})

mods/PLAYER/mcl_gamemode/mod.conf

@@ -0,0 +1 @@
+name = mcl_gamemode

mods/PLAYER/mcl_meshhand/init.lua

@@ -89,6 +89,10 @@ minetest.register_on_joinplayer(function(player)
 	player:get_inventory():set_size("hand", 1)
 end)
 
+mcl_gamemode.register_on_gamemode_change(function(player)
+	mcl_meshhand.update_player(player)
+end)
+
 if mcl_skins_enabled then
 	mcl_player.register_on_visual_change(mcl_meshhand.update_player)
 else

mods/PLAYER/mcl_meshhand/mod.conf

@@ -1,5 +1,5 @@
 name = mcl_meshhand
 author = jordan4ibanez
 description = Applies the player skin texture to the hand.
-depends = mcl_tools, mcl_player
+depends = mcl_tools, mcl_player, mcl_gamemode
 optional_depends = mcl_skins, mcl_custom_skins

mods/PLAYER/mcl_player/init.lua

@@ -1,3 +1,4 @@
+local string = string
 local sf = string.format
 
 -- Minetest 0.4 mod: player
@@ -11,15 +12,16 @@ local animation_blend = 0
 local function get_mouse_button(player)
 	local controls = player:get_player_control()
 	local get_wielded_item_name = player:get_wielded_item():get_name()
-	if controls.RMB and not string.find(get_wielded_item_name, "mcl_bows:bow") and not string.find(get_wielded_item_name, "mcl_bows:crossbow") and
-	not mcl_shields.wielding_shield(player, 1) and not mcl_shields.wielding_shield(player, 2) or controls.LMB then
+	if controls.RMB and not string.find(get_wielded_item_name, "mcl_bows:bow") and
+		not string.find(get_wielded_item_name, "mcl_bows:crossbow") and
+		not mcl_shields.wielding_shield(player, 1) and not mcl_shields.wielding_shield(player, 2) or controls.LMB then
 		return true
 	else
 		return false
 	end
 end
 
-mcl_player.registered_player_models = { }
+mcl_player.registered_player_models = {}
 
 -- Local for speed.
 local models = mcl_player.registered_player_models
@@ -49,7 +51,7 @@ function mcl_player.player_get_animation(player)
 		model = player_model[name],
 		textures = textures,
 		animation = player_anim[name],
-		visibility = player_visibility[name]
+		visibility = player_visible[name]
 	}
 end
 
@@ -94,7 +96,7 @@ function mcl_player.player_set_model(player, model_name)
 		player:set_properties({
 			mesh = model_name,
 			visual = "mesh",
-			visual_size = model.visual_size or {x=1, y=1},
+			visual_size = model.visual_size or { x = 1, y = 1 },
 			damage_texture_modifier = "^[colorize:red:130",
 		})
 		update_player_textures(player)
@@ -133,6 +135,13 @@ function mcl_player.player_set_armor(player, texture)
 	update_player_textures(player)
 end
 
+---@param player mt.PlayerObjectRef
+---@param x number
+---@param y number
+---@param w number
+---@param h number
+---@param fsname string
+---@return string
 function mcl_player.get_player_formspec_model(player, x, y, w, h, fsname)
 	local name = player:get_player_name()
 	local model = player_model[name]
@@ -165,7 +174,8 @@ minetest.register_on_joinplayer(function(player)
 	local name = player:get_player_name()
 	mcl_player.player_attached[name] = false
 	player_visible[name] = true
-	player_textures[name] = {"character.png", "blank.png", "blank.png"}
+	player_textures[name] = { "character.png", "blank.png", "blank.png" }
+
 	--player:set_local_animation({x=0, y=79}, {x=168, y=187}, {x=189, y=198}, {x=200, y=219}, 30)
 	player:set_fov(86.1) -- see <https://minecraft.gamepedia.com/Options#Video_settings>>>>
 end)
@@ -221,11 +231,13 @@ minetest.register_globalstep(function(dtime)
 			elseif mcl_playerplus.elytra[player] and mcl_playerplus.elytra[player].active then
 				player_set_animation(player, "stand")
 			elseif walking and velocity.x > 0.35
-			or walking and velocity.x < -0.35
-			or walking and velocity.z > 0.35
-			or walking and velocity.z < -0.35 then
+				or walking and velocity.x < -0.35
+				or walking and velocity.z > 0.35
+				or walking and velocity.z < -0.35 then
 				local wielded_itemname = player:get_wielded_item():get_name()
-				local no_arm_moving = string.find(wielded_itemname, "mcl_bows:bow") or mcl_shields.wielding_shield(player, 1) or mcl_shields.wielding_shield(player, 2)
+				local no_arm_moving = string.find(wielded_itemname, "mcl_bows:bow") or
+					mcl_shields.wielding_shield(player, 1) or
+					mcl_shields.wielding_shield(player, 2)
 				if player_sneak[name] ~= controls.sneak then
 					player_anim[name] = nil
 					player_sneak[name] = controls.sneak
@@ -234,7 +246,8 @@ minetest.register_globalstep(function(dtime)
 					player_set_animation(player, "swim_walk_mine", animation_speed_mod)
 				elseif not controls.sneak and head_in_water and is_sprinting == true then
 					player_set_animation(player, "swim_walk", animation_speed_mod)
-				elseif no_arm_moving and controls.RMB and controls.sneak or string.find(wielded_itemname, "mcl_bows:crossbow_") and controls.sneak then
+				elseif no_arm_moving and controls.RMB and controls.sneak or
+					string.find(wielded_itemname, "mcl_bows:crossbow_") and controls.sneak then
 					player_set_animation(player, "bow_sneak", animation_speed_mod)
 				elseif no_arm_moving and controls.RMB or string.find(wielded_itemname, "mcl_bows:crossbow_") then
 					player_set_animation(player, "bow_walk", animation_speed_mod)