Add files via upload

mods/unified_inventory/.gitignore

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+*~
+

mods/unified_inventory/LICENSE.txt

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+Unified Inventory for Minetest
+Copyright (C) 2012-2014 Maciej Kasatkin (RealBadAngel)
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+Contact information:
+	Examine a git patch to get the contributor's email address.

mods/unified_inventory/README.md

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+# Unified Inventory
+
+Unified Inventory replaces the default survival and creative inventory.
+
+
+## Features
+
+ * Node, item and tool browser
+ * Crafting guide
+    * Can copy the recipe to the crafting grid
+    * Recipe search function by ingredients
+ * Up to four bags with up to 24 slots each
+ * Home function to teleport
+ * Trash slot
+ * Lite mode: reduces the item browser width
+ * Mod API for modders: see [mod_api.txt](doc/mod_api.txt)
+ * Setting-determinated features: see [settingtypes.txt](settingtypes.txt)
+
+
+## Requirements
+
+ * Minetest 5.0.0+ since commit 4403b69
+ * Minetest 0.4.16+ prior commit 4403b69
+
+
+# Licenses
+
+Copyright (C) 2012-2014 Maciej Kasatkin (RealBadAngel)
+
+Copyright (C) 2012-? Various minetest-mods contributors
+
+
+## Code
+
+GNU LGPLv2+, see [license notice](LICENSE.txt)
+
+
+## Textures
+
+VanessaE: (CC-BY-4.0)
+
+  * `ui_group.png`
+
+Tango Project: (Public Domain, CC-BY-4.0)
+
+  * [`ui_reset_icon.png`](https://commons.wikimedia.org/wiki/File:Edit-clear.svg)
+  * [`ui_doubleleft_icon.png`](http://commons.wikimedia.org/wiki/File:Media-seek-backward.svg)
+  * [`ui_doubleright_icon.png`](http://commons.wikimedia.org/wiki/File:Media-seek-forward.svg)
+  * [`ui_left_icon.png` / `ui_right_icon.png`](http://commons.wikimedia.org/wiki/File:Media-playback-start.svg)
+  * [`ui_skip_backward_icon.png`](http://commons.wikimedia.org/wiki/File:Media-skip-backward.svg)
+  * [`ui_skip_forward_icon.png`](http://commons.wikimedia.org/wiki/File:Media-skip-forward.svg)
+
+From http://www.clker.com (Public Domain, CC-BY-4.0):
+
+  * [`bags_small.png`](http://www.clker.com/clipart-moneybag-empty.html)
+  * [`bags_medium.png`](http://www.clker.com/clipart-backpack-1.html)
+  * [`bags_large.png` / `ui_bags_icon.png`](http://www.clker.com/clipart-backpack-green-brown.html)
+  * `ui_trash_icon.png`: <http://www.clker.com/clipart-29090.html> and <http://www.clker.com/clipart-trash.html>
+  * [`ui_search_icon.png`](http://www.clker.com/clipart-24887.html)
+  * [`ui_off_icon.png` / `ui_on_icon.png`](http://www.clker.com/clipart-on-off-switches.html)
+  * [`ui_waypoints_icon.png`](http://www.clker.com/clipart-map-pin-red.html)
+  * [`ui_circular_arrows_icon.png`](http://www.clker.com/clipart-circular-arrow-pattern.html)
+  * [`ui_pencil_icon.pnc`](http://www.clker.com/clipart-2256.html)
+  * [`ui_waypoint_set_icon.png`](http://www.clker.com/clipart-larger-flag.html)
+
+Everaldo Coelho (YellowIcon) (LGPL v2.1+):
+
+  * [`ui_craftguide_icon.png` / `ui_craft_icon.png`](http://commons.wikimedia.org/wiki/File:Advancedsettings.png)
+
+Gregory H. Revera: (CC-BY-SA 3.0)
+
+  * [`ui_moon_icon.png`](http://commons.wikimedia.org/wiki/File:FullMoon2010.jpg)
+
+Thomas Bresson: (CC-BY 3.0)
+
+  * [`ui_sun_icon.png`](http://commons.wikimedia.org/wiki/File:2012-10-13_15-29-35-sun.jpg)
+
+Fibonacci: (Public domain, CC-BY 4.0)
+
+  * [`ui_xyz_off_icon.png`](http://commons.wikimedia.org/wiki/File:No_sign.svg)
+
+Gregory Maxwell: (Public domain, CC-BY 4.0)
+
+  * [`ui_ok_icon.png`](http://commons.wikimedia.org/wiki/File:Yes_check.svg)
+
+Adrien Facélina: (LGPL v2.1+)
+
+  * [`inventory_plus_worldedit_gui.png`](http://commons.wikimedia.org/wiki/File:Erioll_world_2.svg)
+
+Other files from Wikimedia Commons:
+
+  * [`ui_gohome_icon.png` / `ui_home_icon.png` / `ui_sethome_icon.png`](http://commons.wikimedia.org/wiki/File:Home_256x256.png) (GPL v2+)
+
+RealBadAngel: (CC-BY-4.0)
+
+  * Everything else.

mods/unified_inventory/api.lua

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+local S = minetest.get_translator("unified_inventory")
+local F = minetest.formspec_escape
+
+-- Create detached creative inventory after loading all mods
+minetest.after(0.01, function()
+	local rev_aliases = {}
+	for source, target in pairs(minetest.registered_aliases) do
+		if not rev_aliases[target] then rev_aliases[target] = {} end
+		table.insert(rev_aliases[target], source)
+	end
+	unified_inventory.items_list = {}
+	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
+			table.insert(unified_inventory.items_list, name)
+			local all_names = rev_aliases[name] or {}
+			table.insert(all_names, name)
+			for _, name in ipairs(all_names) do
+				local recipes = minetest.get_all_craft_recipes(name)
+				if recipes then
+					for _, recipe in ipairs(recipes) do
+
+						local unknowns
+
+						for _,chk in pairs(recipe.items) do
+							local groupchk = string.find(chk, "group:")
+							if (not groupchk and not minetest.registered_items[chk])
+							  or (groupchk and not unified_inventory.get_group_item(string.gsub(chk, "group:", "")).item)
+							  or minetest.get_item_group(chk, "not_in_craft_guide") ~= 0 then
+								unknowns = true
+							end
+						end
+
+						if not unknowns then
+							unified_inventory.register_craft(recipe)
+						end
+					end
+				end
+			end
+		end
+	end
+	table.sort(unified_inventory.items_list)
+	unified_inventory.items_list_size = #unified_inventory.items_list
+	print("Unified Inventory. inventory size: "..unified_inventory.items_list_size)
+	for _, name in ipairs(unified_inventory.items_list) do
+		local def = minetest.registered_items[name]
+		-- Simple drops
+		if type(def.drop) == "string" then
+			local dstack = ItemStack(def.drop)
+			if not dstack:is_empty() and dstack:get_name() ~= name then
+				unified_inventory.register_craft({
+					type = "digging",
+					items = {name},
+					output = def.drop,
+					width = 0,
+				})
+
+			end
+		-- Complex drops. Yes, it's really complex!
+		elseif type(def.drop) == "table" then
+			--[[ Extract single items from the table and save them into dedicated tables
+			to register them later, in order to avoid duplicates. These tables counts
+			the total number of guaranteed drops and drops by chance (“maybes”) for each item.
+			For “maybes”, the final count is the theoretical maximum number of items, not
+			neccessarily the actual drop count. ]]
+			local drop_guaranteed = {}
+			local drop_maybe = {}
+			-- This is for catching an obscure corner case: If the top items table has
+			-- only items with rarity = 1, but max_items is set, then only the first
+			-- max_items will be part of the drop, any later entries are logically
+			-- impossible, so this variable is for keeping track of this
+			local max_items_left = def.drop.max_items
+			-- For checking whether we still encountered only guaranteed only so far;
+			-- for the first “maybe” item it will become false which will cause ALL
+			-- later items to be considered “maybes”.
+			-- A common idiom is:
+			-- { max_items 1, { items = {
+			--	{ items={"example:1"}, rarity = 5 },
+			-- 	{ items={"example:2"}, rarity = 1 }, }}}
+			-- example:2 must be considered a “maybe” because max_items is set and it
+			-- appears after a “maybe”
+			local max_start = true
+			-- Let's iterate through the items madness!
+			-- Handle invalid drop entries gracefully.
+			local drop_items = def.drop.items or { }
+			for i=1,#drop_items do
+				if max_items_left ~= nil and max_items_left <= 0 then break end
+				local itit = drop_items[i]
+				for j=1,#itit.items do
+					local dstack = ItemStack(itit.items[j])
+					if not dstack:is_empty() and dstack:get_name() ~= name then
+						local dname = dstack:get_name()
+						local dcount = dstack:get_count()
+						-- Guaranteed drops AND we are not yet in “maybe mode”
+						if #itit.items == 1 and itit.rarity == 1 and max_start then
+							if drop_guaranteed[dname] == nil then
+								drop_guaranteed[dname] = 0
+							end
+							drop_guaranteed[dname] = drop_guaranteed[dname] + dcount
+
+							if max_items_left ~= nil then
+								max_items_left = max_items_left - 1
+								if max_items_left <= 0 then break end
+							end
+						-- Drop was a “maybe”
+						else
+							if max_items_left ~= nil then max_start = false end
+							if drop_maybe[dname] == nil then
+								drop_maybe[dname] = 0
+							end
+							drop_maybe[dname] = drop_maybe[dname] + dcount
+						end
+					end
+				end
+			end
+			for itemstring, count in pairs(drop_guaranteed) do
+				unified_inventory.register_craft({
+					type = "digging",
+					items = {name},
+					output = itemstring .. " " .. count,
+					width = 0,
+				})
+			end
+			for itemstring, count in pairs(drop_maybe) do
+				unified_inventory.register_craft({
+					type = "digging_chance",
+					items = {name},
+					output = itemstring .. " " .. count,
+					width = 0,
+				})
+			end
+		end
+	end
+	for _, recipes in pairs(unified_inventory.crafts_for.recipe) do
+		for _, recipe in ipairs(recipes) do
+			local ingredient_items = {}
+			for _, spec in pairs(recipe.items) do
+				local matches_spec = unified_inventory.canonical_item_spec_matcher(spec)
+				for _, name in ipairs(unified_inventory.items_list) do
+					if matches_spec(name) then
+						ingredient_items[name] = true
+					end
+				end
+			end
+			for name, _ in pairs(ingredient_items) do
+				if unified_inventory.crafts_for.usage[name] == nil then
+					unified_inventory.crafts_for.usage[name] = {}
+				end
+				table.insert(unified_inventory.crafts_for.usage[name], recipe)
+			end
+		end
+	end
+end)
+
+
+-- load_home
+local function load_home()
+	local input = io.open(unified_inventory.home_filename, "r")
+	if not input then
+		unified_inventory.home_pos = {}
+		return
+	end
+	while true do
+		local x = input:read("*n")
+		if not x then break end
+		local y = input:read("*n")
+		local z = input:read("*n")
+		local name = input:read("*l")
+		unified_inventory.home_pos[name:sub(2)] = {x = x, y = y, z = z}
+	end
+	io.close(input)
+end
+load_home()
+
+function unified_inventory.set_home(player, pos)
+	local player_name = player:get_player_name()
+	unified_inventory.home_pos[player_name] = vector.round(pos)
+	-- save the home data from the table to the file
+	local output = io.open(unified_inventory.home_filename, "w")
+	for k, v in pairs(unified_inventory.home_pos) do
+		output:write(v.x.." "..v.y.." "..v.z.." "..k.."\n")
+	end
+	io.close(output)
+end
+
+function unified_inventory.go_home(player)
+	local pos = unified_inventory.home_pos[player:get_player_name()]
+	if pos then
+		player:set_pos(pos)
+	end
+end
+
+-- register_craft
+function unified_inventory.register_craft(options)
+	if not options.output then
+		return
+	end
+	local itemstack = ItemStack(options.output)
+	if itemstack:is_empty() then
+		return
+	end
+	if options.type == "normal" and options.width == 0 then
+		options = { type = "shapeless", items = options.items, output = options.output, width = 0 }
+	end
+	if not unified_inventory.crafts_for.recipe[itemstack:get_name()] then
+		unified_inventory.crafts_for.recipe[itemstack:get_name()] = {}
+	end
+	table.insert(unified_inventory.crafts_for.recipe[itemstack:get_name()],options)
+end
+
+
+local craft_type_defaults = {
+	width = 3,
+	height = 3,
+	uses_crafting_grid = false,
+}
+
+
+function unified_inventory.craft_type_defaults(name, options)
+	if not options.description then
+		options.description = name
+	end
+	setmetatable(options, {__index = craft_type_defaults})
+	return options
+end
+
+
+function unified_inventory.register_craft_type(name, options)
+	unified_inventory.registered_craft_types[name] =
+			unified_inventory.craft_type_defaults(name, options)
+end
+
+
+unified_inventory.register_craft_type("normal", {
+	description = F(S("Crafting")),
+	icon = "ui_craftgrid_icon.png",
+	width = 3,
+	height = 3,
+	get_shaped_craft_width = function (craft) return craft.width end,
+	dynamic_display_size = function (craft)
+		local w = craft.width
+		local h = math.ceil(table.maxn(craft.items) / craft.width)
+		local g = w < h and h or w
+		return { width = g, height = g }
+	end,
+	uses_crafting_grid = true,
+})
+
+
+unified_inventory.register_craft_type("shapeless", {
+	description = F(S("Mixing")),
+	icon = "ui_craftgrid_icon.png",
+	width = 3,
+	height = 3,
+	dynamic_display_size = function (craft)
+		local maxn = table.maxn(craft.items)
+		local g = 1
+		while g*g < maxn do g = g + 1 end
+		return { width = g, height = g }
+	end,
+	uses_crafting_grid = true,
+})
+
+
+unified_inventory.register_craft_type("cooking", {
+	description = F(S("Cooking")),
+	icon = "default_furnace_front.png",
+	width = 1,
+	height = 1,
+})
+
+
+unified_inventory.register_craft_type("digging", {
+	description = F(S("Digging")),
+	icon = "default_tool_steelpick.png",
+	width = 1,
+	height = 1,
+})
+
+unified_inventory.register_craft_type("digging_chance", {
+	description = "Digging (by chance)",
+	icon = "default_tool_steelpick.png^[transformFY.png",
+	width = 1,
+	height = 1,
+})
+
+function unified_inventory.register_page(name, def)
+	unified_inventory.pages[name] = def
+end
+
+
+function unified_inventory.register_button(name, def)
+	if not def.action then
+		def.action = function(player)
+			unified_inventory.set_inventory_formspec(player, name)
+		end
+	end
+	def.name = name
+	table.insert(unified_inventory.buttons, def)
+end
+
+
+function unified_inventory.is_creative(playername)
+	return minetest.check_player_privs(playername, {creative=true})
+		or minetest.settings:get_bool("creative_mode")
+end

mods/unified_inventory/bags.lua

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+--[[ 
+Bags for Minetest
+
+Copyright (c) 2012 cornernote, Brett O'Donnell <cornernote@gmail.com>
+License: GPLv3
+--]]
+
+local S = minetest.get_translator("unified_inventory")
+local F = minetest.formspec_escape
+
+unified_inventory.register_page("bags", {
+	get_formspec = function(player)
+		local player_name = player:get_player_name()
+		return { formspec = table.concat({
+			"background[0.06,0.99;7.92,7.52;ui_bags_main_form.png]",
+			"label[0,0;" .. F(S("Bags")) .. "]",
+			"button[0,2;2,0.5;bag1;" .. F(S("Bag @1", 1)) .. "]",
+			"button[2,2;2,0.5;bag2;" .. F(S("Bag @1", 2)) .. "]",
+			"button[4,2;2,0.5;bag3;" .. F(S("Bag @1", 3)) .. "]",
+			"button[6,2;2,0.5;bag4;" .. F(S("Bag @1", 4)) .. "]",
+			"listcolors[#00000000;#00000000]",
+			"list[detached:" .. F(player_name) .. "_bags;bag1;0.5,1;1,1;]",
+			"list[detached:" .. F(player_name) .. "_bags;bag2;2.5,1;1,1;]",
+			"list[detached:" .. F(player_name) .. "_bags;bag3;4.5,1;1,1;]",
+			"list[detached:" .. F(player_name) .. "_bags;bag4;6.5,1;1,1;]"
+		}) }
+	end,
+})
+
+unified_inventory.register_button("bags", {
+	type = "image",
+	image = "ui_bags_icon.png",
+	tooltip = S("Bags"),
+	hide_lite=true
+})
+
+local function get_player_bag_stack(player, i)
+	return minetest.get_inventory({
+		type = "detached",
+		name = player:get_player_name() .. "_bags"
+	}):get_stack("bag" .. i, 1)
+end
+
+for bag_i = 1, 4 do
+	unified_inventory.register_page("bag" .. bag_i, {
+		get_formspec = function(player)
+			local stack = get_player_bag_stack(player, bag_i)
+			local image = stack:get_definition().inventory_image
+			local fs = {
+				"image[7,0;1,1;" .. image .. "]",
+				"label[0,0;" .. F(S("Bag @1", bag_i)) .. "]",
+				"listcolors[#00000000;#00000000]",
+				"list[current_player;bag" .. bag_i .. "contents;0,1;8,3;]",
+				"listring[current_name;bag" .. bag_i .. "contents]",
+				"listring[current_player;main]"
+			}
+			local slots = stack:get_definition().groups.bagslots
+			if slots == 8 then
+					fs[#fs + 1] = "background[0.06,0.99;7.92,7.52;ui_bags_sm_form.png]"
+			elseif slots == 16 then
+					fs[#fs + 1] = "background[0.06,0.99;7.92,7.52;ui_bags_med_form.png]"
+			elseif slots == 24 then
+					fs[#fs + 1] = "background[0.06,0.99;7.92,7.52;ui_bags_lg_form.png]"
+			end
+			local player_name = player:get_player_name() -- For if statement.
+			if unified_inventory.trash_enabled
+					or unified_inventory.is_creative(player_name)
+					or minetest.get_player_privs(player_name).give then
+				fs[#fs + 1] = "background[6.06,0;0.92,0.92;ui_bags_trash.png]"
+						.. "list[detached:trash;main;6,0.1;1,1;]"
+			end
+			local inv = player:get_inventory()
+			for i = 1, 4 do
+				local def = get_player_bag_stack(player, i):get_definition()
+				if def.groups.bagslots then
+					local list_name = "bag" .. i .. "contents"
+					local size = inv:get_size(list_name)
+					local used = 0
+					for si = 1, size do
+						local stk = inv:get_stack(list_name, si)
+						if not stk:is_empty() then
+							used = used + 1
+						end
+					end
+					local img = def.inventory_image
+					local label = F(S("Bag @1", i)) .. "\n" .. used .. "/" .. size
+					fs[#fs + 1] = string.format("image_button[%i,0;1,1;%s;bag%i;%s]",
+							i + 1, img, i, label)
+				end
+			end
+			return { formspec = table.concat(fs) }
+		end,
+	})
+end
+
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	if formname ~= "" then
+		return
+	end
+	for i = 1, 4 do
+		if fields["bag" .. i] then
+			local stack = get_player_bag_stack(player, i)
+			if not stack:get_definition().groups.bagslots then
+				return
+			end
+			unified_inventory.set_inventory_formspec(player, "bag" .. i)
+			return
+		end
+	end
+end)
+
+local function save_bags_metadata(player, bags_inv)
+	local is_empty = true
+	local bags = {}
+	for i = 1, 4 do
+		local bag = "bag" .. i
+		if not bags_inv:is_empty(bag) then
+			-- Stack limit is 1, otherwise use stack:to_string()
+			bags[i] = bags_inv:get_stack(bag, 1):get_name()
+			is_empty = false
+		end
+	end
+	local meta = player:get_meta()
+	if is_empty then
+		meta:set_string("unified_inventory:bags", nil)
+	else
+		meta:set_string("unified_inventory:bags",
+			minetest.serialize(bags))
+	end
+end
+
+local function load_bags_metadata(player, bags_inv)
+	local player_inv = player:get_inventory()
+	local meta = player:get_meta()
+	local bags_meta = meta:get_string("unified_inventory:bags")
+	local bags = bags_meta and minetest.deserialize(bags_meta) or {}
+	local dirty_meta = false
+	if not bags_meta then
+		-- Backwards compatiblity
+		for i = 1, 4 do
+			local bag = "bag" .. i
+			if not player_inv:is_empty(bag) then
+				-- Stack limit is 1, otherwise use stack:to_string()
+				bags[i] = player_inv:get_stack(bag, 1):get_name()
+				dirty_meta = true
+			end
+		end
+	end
+	-- Fill detached slots
+	for i = 1, 4 do
+		local bag = "bag" .. i
+		bags_inv:set_size(bag, 1)
+		bags_inv:set_stack(bag, 1, bags[i] or "")
+	end
+
+	if dirty_meta then
+		-- Requires detached inventory to be set up
+		save_bags_metadata(player, bags_inv)
+	end
+
+	-- Clean up deprecated garbage after saving
+	for i = 1, 4 do
+		local bag = "bag" .. i
+		player_inv:set_size(bag, 0)
+	end
+end
+
+minetest.register_on_joinplayer(function(player)
+	local player_inv = player:get_inventory()
+	local player_name = player:get_player_name()
+	local bags_inv = minetest.create_detached_inventory(player_name .. "_bags",{
+		on_put = function(inv, listname, index, stack, player)
+			player:get_inventory():set_size(listname .. "contents",
+					stack:get_definition().groups.bagslots)
+			save_bags_metadata(player, inv)
+		end,
+		allow_put = function(inv, listname, index, stack, player)
+			local new_slots = stack:get_definition().groups.bagslots
+			if not new_slots then
+				return 0
+			end
+			local player_inv = player:get_inventory()
+			local old_slots = player_inv:get_size(listname .. "contents")
+
+			if new_slots >= old_slots then
+				return 1
+			end
+
+			-- using a smaller bag, make sure it fits
+			local old_list = player_inv:get_list(listname .. "contents")
+			local new_list = {}
+			local slots_used = 0
+			local use_new_list = false
+
+			for i, v in ipairs(old_list) do
+				if v and not v:is_empty() then
+					slots_used = slots_used + 1
+					use_new_list = i > new_slots
+					new_list[slots_used] = v
+				end
+			end
+			if new_slots >= slots_used then
+				if use_new_list then
+					player_inv:set_list(listname .. "contents", new_list)
+				end
+				return 1
+			end
+			-- New bag is smaller: Disallow inserting
+			return 0
+		end,
+		allow_take = function(inv, listname, index, stack, player)
+			if player:get_inventory():is_empty(listname .. "contents") then
+				return stack:get_count()
+			end
+			return 0
+		end,
+		on_take = function(inv, listname, index, stack, player)
+			player:get_inventory():set_size(listname .. "contents", 0)
+			save_bags_metadata(player, inv)
+		end,
+		allow_move = function()
+			return 0
+		end,
+	}, player_name)
+
+	load_bags_metadata(player, bags_inv)
+end)
+
+-- register bag tools
+minetest.register_tool("unified_inventory:bag_small", {
+	description = S("Small Bag"),
+	inventory_image = "bags_small.png",
+	groups = {bagslots=8},
+})
+
+minetest.register_tool("unified_inventory:bag_medium", {
+	description = S("Medium Bag"),
+	inventory_image = "bags_medium.png",
+	groups = {bagslots=16},
+})
+
+minetest.register_tool("unified_inventory:bag_large", {
+	description = S("Large Bag"),
+	inventory_image = "bags_large.png",
+	groups = {bagslots=24},
+})
+
+-- register bag crafts
+if minetest.get_modpath("farming") ~= nil then
+	minetest.register_craft({
+		output = "unified_inventory:bag_small",
+		recipe = {
+			{"",           "farming:cotton", ""},
+			{"group:wool", "group:wool",     "group:wool"},
+			{"group:wool", "group:wool",     "group:wool"},
+		},
+	})
+
+	minetest.register_craft({
+		output = "unified_inventory:bag_medium",
+		recipe = {
+			{"",               "",                            ""},
+			{"farming:cotton", "unified_inventory:bag_small", "farming:cotton"},
+			{"farming:cotton", "unified_inventory:bag_small", "farming:cotton"},
+		},
+	})
+
+	minetest.register_craft({
+		output = "unified_inventory:bag_large",
+		recipe = {
+			{"",               "",                             ""},
+			{"farming:cotton", "unified_inventory:bag_medium", "farming:cotton"},
+			{"farming:cotton", "unified_inventory:bag_medium", "farming:cotton"},
+	    },
+	})
+end

mods/unified_inventory/callbacks.lua

@@ -0,0 +1,216 @@
+local function default_refill(stack)
+	stack:set_count(stack:get_stack_max())
+	local itemdef = minetest.registered_items[stack:get_name()]
+	if itemdef
+	and (itemdef.wear_represents or "mechanical_wear") == "mechanical_wear"
+	and stack:get_wear() ~= 0 then
+		stack:set_wear(0)
+	end
+	return stack
+end
+
+minetest.register_on_joinplayer(function(player)
+	local player_name = player:get_player_name()
+	unified_inventory.players[player_name] = {}
+	unified_inventory.current_index[player_name] = 1
+	unified_inventory.filtered_items_list[player_name] =
+	unified_inventory.items_list
+	unified_inventory.activefilter[player_name] = ""
+	unified_inventory.active_search_direction[player_name] = "nochange"
+	unified_inventory.apply_filter(player, "", "nochange")
+	unified_inventory.current_searchbox[player_name] = ""
+	unified_inventory.alternate[player_name] = 1
+	unified_inventory.current_item[player_name] = nil
+	unified_inventory.current_craft_direction[player_name] = "recipe"
+	unified_inventory.set_inventory_formspec(player,
+	unified_inventory.default)
+
+	-- Refill slot
+	local refill = minetest.create_detached_inventory(player_name.."refill", {
+		allow_put = function(inv, listname, index, stack, player)
+			local player_name = player:get_player_name()
+			if unified_inventory.is_creative(player_name) then
+				return stack:get_count()
+			else
+				return 0
+			end
+		end,
+		on_put = function(inv, listname, index, stack, player)
+			local player_name = player:get_player_name()
+			local handle_refill = (minetest.registered_items[stack:get_name()] or {}).on_refill or default_refill
+			stack = handle_refill(stack)
+			inv:set_stack(listname, index, stack)
+			minetest.sound_play("electricity",
+					{to_player=player_name, gain = 1.0})
+		end,
+	}, player_name)
+	refill:set_size("main", 1)
+end)
+
+local function apply_new_filter(player, search_text, new_dir)
+	local player_name = player:get_player_name()
+	minetest.sound_play("click", {to_player=player_name, gain = 0.1})
+	unified_inventory.apply_filter(player, search_text, new_dir)
+	unified_inventory.current_searchbox[player_name] = search_text
+	unified_inventory.set_inventory_formspec(player,
+			unified_inventory.current_page[player_name])
+end
+
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	local player_name = player:get_player_name()
+
+	local ui_peruser,draw_lite_mode = unified_inventory.get_per_player_formspec(player_name)
+
+	if formname ~= "" then
+		return
+	end
+
+	-- always take new search text, even if not searching on it yet
+	if fields.searchbox
+	and fields.searchbox ~= unified_inventory.current_searchbox[player_name] then
+		unified_inventory.current_searchbox[player_name] = fields.searchbox
+	end
+
+	for i, def in pairs(unified_inventory.buttons) do
+		if fields[def.name] then
+			def.action(player)
+			minetest.sound_play("click",
+					{to_player=player_name, gain = 0.1})
+			return
+		end
+	end
+
+	-- Inventory page controls
+	local start = math.floor(
+		unified_inventory.current_index[player_name] / ui_peruser.items_per_page + 1)
+	local start_i = start
+	local pagemax = math.floor(
+		(#unified_inventory.filtered_items_list[player_name] - 1)
+		/ (ui_peruser.items_per_page) + 1)
+
+	if fields.start_list then
+		start_i = 1
+	end
+	if fields.rewind1 then
+		start_i = start_i - 1
+	end
+	if fields.forward1 then
+		start_i = start_i + 1
+	end
+	if fields.rewind3 then
+		start_i = start_i - 3
+	end
+	if fields.forward3 then
+		start_i = start_i + 3
+	end
+	if fields.end_list then
+		start_i = pagemax
+	end
+	if start_i < 1 then
+		start_i = 1
+	end
+	if start_i > pagemax then
+		start_i = pagemax
+	end
+	if start_i ~= start then
+		minetest.sound_play("paperflip1",
+				{to_player=player_name, gain = 1.0})
+		unified_inventory.current_index[player_name] = (start_i - 1) * ui_peruser.items_per_page + 1
+		unified_inventory.set_inventory_formspec(player,
+				unified_inventory.current_page[player_name])
+	end
+
+	-- Check clicked item image button
+	local clicked_item
+	for name, value in pairs(fields) do
+		local new_dir, mangled_item = string.match(name, "^item_button_([a-z]+)_(.*)$")
+		if new_dir and mangled_item then
+			clicked_item = unified_inventory.demangle_for_formspec(mangled_item)
+			if string.sub(clicked_item, 1, 6) == "group:" then
+				-- Change search filter to this group
+				apply_new_filter(player, clicked_item, new_dir)
+				return
+			end
+			if new_dir == "recipe" or new_dir == "usage" then
+				unified_inventory.current_craft_direction[player_name] = new_dir
+			end
+			break
+		end
+	end
+	if clicked_item then
+		minetest.sound_play("click",
+				{to_player=player_name, gain = 0.1})
+		local page = unified_inventory.current_page[player_name]
+		local player_creative = unified_inventory.is_creative(player_name)
+		if not player_creative then
+			page = "craftguide"
+		end
+		if page == "craftguide" then
+			unified_inventory.current_item[player_name] = clicked_item
+			unified_inventory.alternate[player_name] = 1
+			unified_inventory.set_inventory_formspec(player, "craftguide")
+		elseif player_creative then
+			-- Creative page: Add entire stack to inventory
+			local inv = player:get_inventory()
+			local stack = ItemStack(clicked_item)
+			stack:set_count(stack:get_stack_max())
+			if inv:room_for_item("main", stack) then
+				inv:add_item("main", stack)
+			end
+		end
+	end
+
+	if fields.searchbutton
+			or fields.key_enter_field == "searchbox" then
+		unified_inventory.apply_filter(player, unified_inventory.current_searchbox[player_name], "nochange")
+		unified_inventory.set_inventory_formspec(player,
+				unified_inventory.current_page[player_name])
+		minetest.sound_play("paperflip2",
+				{to_player=player_name, gain = 1.0})
+	elseif fields.searchresetbutton then
+		apply_new_filter(player, "", "nochange")
+	end
+
+	-- alternate buttons
+	if not (fields.alternate or fields.alternate_prev) then
+		return
+	end
+	minetest.sound_play("click",
+			{to_player=player_name, gain = 0.1})
+	local item_name = unified_inventory.current_item[player_name]
+	if not item_name then
+		return
+	end
+	local crafts = unified_inventory.crafts_for[unified_inventory.current_craft_direction[player_name]][item_name]
+	if not crafts then
+		return
+	end
+	local alternates = #crafts
+	if alternates <= 1 then
+		return
+	end
+	local alternate
+	if fields.alternate then
+		alternate = unified_inventory.alternate[player_name] + 1
+		if alternate > alternates then
+			alternate = 1
+		end
+	elseif fields.alternate_prev then
+		alternate = unified_inventory.alternate[player_name] - 1
+		if alternate < 1 then
+			alternate = alternates
+		end
+	end
+	unified_inventory.alternate[player_name] = alternate
+	unified_inventory.set_inventory_formspec(player,
+			unified_inventory.current_page[player_name])
+end)
+
+if minetest.delete_detached_inventory then
+	minetest.register_on_leaveplayer(function(player)
+		local player_name = player:get_player_name()
+		minetest.delete_detached_inventory(player_name.."_bags")
+		minetest.delete_detached_inventory(player_name.."craftrecipe")
+		minetest.delete_detached_inventory(player_name.."refill")
+	end)
+end

mods/unified_inventory/depends.txt

@@ -0,0 +1,5 @@
+default
+creative?
+sfinv?
+datastorage?
+farming?

mods/unified_inventory/description.txt

@@ -0,0 +1 @@
+Unified Inventory replaces the default survival and creative inventory. It adds a nicer interface and a number of features, such as a crafting guide.

mods/unified_inventory/group.lua

@@ -0,0 +1,127 @@
+local S = minetest.get_translator("unified_inventory")
+
+function unified_inventory.canonical_item_spec_matcher(spec)
+	local specname = ItemStack(spec):get_name()
+	if specname:sub(1, 6) ~= "group:" then
+		return function (itemname)
+			return itemname == specname
+		end
+	end
+
+	local group_names = specname:sub(7):split(",")
+	return function (itemname)
+		local itemdef = minetest.registered_items[itemname]
+		for _, group_name in ipairs(group_names) do
+			if (itemdef.groups[group_name] or 0) == 0 then
+				return false
+			end
+		end
+		return true
+	end
+end
+
+function unified_inventory.item_matches_spec(item, spec)
+	local itemname = ItemStack(item):get_name()
+	return unified_inventory.canonical_item_spec_matcher(spec)(itemname)
+end
+
+function unified_inventory.extract_groupnames(groupname)
+	local specname = ItemStack(groupname):get_name()
+	if specname:sub(1, 6) ~= "group:" then
+		return nil, 0
+	end
+	local group_names = specname:sub(7):split(",")
+	return table.concat(group_names, S(" and ")), #group_names
+end
+
+unified_inventory.registered_group_items = {
+	mesecon_conductor_craftable = "mesecons:wire_00000000_off",
+	stone = "default:cobble",
+	wood = "default:wood",
+	book = "default:book",
+	sand = "default:sand",
+	leaves = "default:leaves",
+	tree = "default:tree",
+	vessel = "vessels:glass_bottle",
+	wool = "wool:white",
+}
+
+function unified_inventory.register_group_item(groupname, itemname)
+	unified_inventory.registered_group_items[groupname] = itemname
+end
+
+
+-- This is used when displaying craft recipes, where an ingredient is
+-- specified by group rather than as a specific item.  A single-item group
+-- is represented by that item, with the single-item status signalled
+-- in the "sole" field.  If the group contains no items at all, the item
+-- field will be nil.
+--
+-- Within a multiple-item group, we prefer to use an item that has the
+-- same specific name as the group, and if there are more than one of
+-- those items we prefer the one registered for the group by a mod.
+-- Among equally-preferred items, we just pick the one with the
+-- lexicographically earliest name.
+--
+-- The parameter to this function isn't just a single group name.
+-- It may be a comma-separated list of group names.  This is really a
+-- "group:..." ingredient specification, minus the "group:" prefix.
+
+local function compute_group_item(group_name_list)
+	local group_names = group_name_list:split(",")
+	local candidate_items = {}
+	for itemname, itemdef in pairs(minetest.registered_items) do
+		if (itemdef.groups.not_in_creative_inventory or 0) == 0 then
+			local all = true
+			for _, group_name in ipairs(group_names) do
+				if (itemdef.groups[group_name] or 0) == 0 then
+					all = false
+				end
+			end
+			if all then table.insert(candidate_items, itemname) end
+		end
+	end
+	local num_candidates = #candidate_items
+	if num_candidates == 0 then
+		return {sole = true}
+	elseif num_candidates == 1 then
+		return {item = candidate_items[1], sole = true}
+	end
+	local is_group = {}
+	local registered_rep = {}
+	for _, group_name in ipairs(group_names) do
+		is_group[group_name] = true
+		local rep = unified_inventory.registered_group_items[group_name]
+		if rep then registered_rep[rep] = true end
+	end
+	local bestitem = ""
+	local bestpref = 0
+	for _, item in ipairs(candidate_items) do
+		local pref
+		if registered_rep[item] then
+			pref = 4
+		elseif string.sub(item, 1, 8) == "default:" and is_group[string.sub(item, 9)] then
+			pref = 3
+		elseif is_group[item:gsub("^[^:]*:", "")] then
+			pref = 2
+		else
+			pref = 1
+		end
+		if pref > bestpref or (pref == bestpref and item < bestitem) then
+			bestitem = item
+			bestpref = pref
+		end
+	end
+	return {item = bestitem, sole = false}
+end
+
+
+local group_item_cache = {}
+
+function unified_inventory.get_group_item(group_name)
+	if not group_item_cache[group_name] then
+		group_item_cache[group_name] = compute_group_item(group_name)
+	end
+	return group_item_cache[group_name]
+end
+

mods/unified_inventory/image_credits.txt

@@ -0,0 +1,69 @@
+bags_small.png:
+	http://www.clker.com/clipart-moneybag-empty.html
+
+bags_medium.png:
+	http://www.clker.com/clipart-backpack-1.html
+
+bags_large.png / ui_bags_icon.png:
+	http://www.clker.com/clipart-backpack-green-brown.html
+
+ui_craftguide_icon.png / ui_craft_icon.png
+	http://commons.wikimedia.org/wiki/File:Advancedsettings.png
+	
+ui_doubleleft_icon.png
+	http://commons.wikimedia.org/wiki/File:Media-seek-backward.svg
+
+ui_doubleright_icon.png
+	http://commons.wikimedia.org/wiki/File:Media-seek-forward.svg
+
+ui_left_icon.png / ui_right_icon.png
+	http://commons.wikimedia.org/wiki/File:Media-playback-start.svg
+
+ui_skip_backward_icon.png
+	http://commons.wikimedia.org/wiki/File:Media-skip-backward.svg
+
+ui_skip_forward_icon.png
+	http://commons.wikimedia.org/wiki/File:Media-skip-forward.svg
+
+ui_reset_icon.png
+	https://commons.wikimedia.org/wiki/File:Edit-clear.svg
+
+ui_gohome_icon.png / ui_home_icon.png / ui_sethome_icon.png
+	http://commons.wikimedia.org/wiki/File:Home_256x256.png
+
+ui_moon_icon.png
+	http://commons.wikimedia.org/wiki/File:FullMoon2010.jpg
+
+ui_sun_icon.png
+	http://commons.wikimedia.org/wiki/File:2012-10-13_15-29-35-sun.jpg
+
+ui_trash_icon.png
+	http://www.clker.com/clipart-29090.html
+	http://www.clker.com/clipart-trash.html
+
+ui_search_icon.png
+	http://www.clker.com/clipart-24887.html
+
+ui_off_icon.png / ui_on_icon.png
+	http://www.clker.com/clipart-on-off-switches.html
+
+ui_waypoints_icon.png
+	http://www.clker.com/clipart-map-pin-red.html
+
+ui_circular_arrows_icon.png
+	http://www.clker.com/clipart-circular-arrow-pattern.html
+
+ui_pencil_icon.pnc
+	http://www.clker.com/clipart-2256.html
+
+ui_waypoint_set_icon.png
+	http://www.clker.com/clipart-larger-flag.html
+
+ui_xyz_off_icon.png
+	http://commons.wikimedia.org/wiki/File:No_sign.svg
+
+ui_ok_icon.png
+	http://commons.wikimedia.org/wiki/File:Yes_check.svg
+
+inventory_plus_worldedit_gui.png
+	http://commons.wikimedia.org/wiki/File:Erioll_world_2.svg

mods/unified_inventory/init.lua

@@ -0,0 +1,79 @@
+-- Unified Inventory for Minetest >= 0.4.16
+
+local modpath = minetest.get_modpath(minetest.get_current_modname())
+local worldpath = minetest.get_worldpath()
+
+-- Data tables definitions
+unified_inventory = {
+	activefilter = {},
+	active_search_direction = {},
+	alternate = {},
+	current_page = {},
+	current_searchbox = {},
+	current_index = {},
+	current_item = {},
+	current_craft_direction = {},
+	registered_craft_types = {},
+	crafts_for = {usage = {}, recipe = {} },
+	players = {},
+	items_list_size = 0,
+	items_list = {},
+	filtered_items_list_size = {},
+	filtered_items_list = {},
+	pages = {},
+	buttons = {},
+
+	-- Homepos stuff
+	home_pos = {},
+	home_filename =	worldpath.."/unified_inventory_home.home",
+
+	-- Default inventory page
+	default = "craft",
+
+	-- "Lite" mode
+	lite_mode = minetest.settings:get_bool("unified_inventory_lite"),
+
+	-- Trash enabled
+	trash_enabled = (minetest.settings:get_bool("unified_inventory_trash") ~= false),
+
+	pagecols = 8,
+	pagerows = 10,
+	page_y = 0,
+	formspec_y = 1,
+	main_button_x = 0,
+	main_button_y = 9,
+	craft_result_x = 0.3,
+	craft_result_y = 0.5,
+	form_header_y = 0
+}
+
+-- Disable default creative inventory
+local creative = rawget(_G, "creative") or rawget(_G, "creative_inventory")
+if creative then
+	function creative.set_creative_formspec(player, start_i, pagenum)
+		return
+	end
+end
+
+-- Disable sfinv inventory
+local sfinv = rawget(_G, "sfinv")
+if sfinv then
+	sfinv.enabled = false
+end
+
+dofile(modpath.."/group.lua")
+dofile(modpath.."/api.lua")
+dofile(modpath.."/internal.lua")
+dofile(modpath.."/callbacks.lua")
+dofile(modpath.."/match_craft.lua")
+dofile(modpath.."/register.lua")
+
+if minetest.settings:get_bool("unified_inventory_bags") ~= false then
+	dofile(modpath.."/bags.lua")
+end
+
+dofile(modpath.."/item_names.lua")
+
+if minetest.get_modpath("datastorage") then
+	dofile(modpath.."/waypoints.lua")
+end

mods/unified_inventory/internal.lua

@@ -0,0 +1,374 @@
+local S = minetest.get_translator("unified_inventory")
+local F = minetest.formspec_escape
+
+-- This pair of encoding functions is used where variable text must go in
+-- button names, where the text might contain formspec metacharacters.
+-- We can escape button names for the formspec, to avoid screwing up
+-- form structure overall, but they then don't get de-escaped, and so
+-- the input we get back from the button contains the formspec escaping.
+-- This is a game engine bug, and in the anticipation that it might be
+-- fixed some day we don't want to rely on it.  So for safety we apply
+-- an encoding that avoids all formspec metacharacters.
+function unified_inventory.mangle_for_formspec(str)
+	return string.gsub(str, "([^A-Za-z0-9])", function (c) return string.format("_%d_", string.byte(c)) end)
+end
+function unified_inventory.demangle_for_formspec(str)
+	return string.gsub(str, "_([0-9]+)_", function (v) return string.char(v) end)
+end
+
+function unified_inventory.get_per_player_formspec(player_name)
+	local lite = unified_inventory.lite_mode and not minetest.check_player_privs(player_name, {ui_full=true})
+
+	local ui = {}
+	ui.pagecols = unified_inventory.pagecols
+	ui.pagerows = unified_inventory.pagerows
+	ui.page_y = unified_inventory.page_y
+	ui.formspec_y = unified_inventory.formspec_y
+	ui.main_button_x = unified_inventory.main_button_x
+	ui.main_button_y = unified_inventory.main_button_y
+	ui.craft_result_x = unified_inventory.craft_result_x
+	ui.craft_result_y = unified_inventory.craft_result_y
+	ui.form_header_y = unified_inventory.form_header_y
+
+	if lite then
+		ui.pagecols = 4
+		ui.pagerows = 6
+		ui.page_y = 0.25
+		ui.formspec_y = 0.47
+		ui.main_button_x = 8.2
+		ui.main_button_y = 6.5
+		ui.craft_result_x = 2.8
+		ui.craft_result_y = 3.4
+		ui.form_header_y = -0.1
+	end
+
+	ui.items_per_page = ui.pagecols * ui.pagerows
+	return ui, lite
+end
+
+function unified_inventory.get_formspec(player, page)
+
+	if not player then
+		return ""
+	end
+
+	local player_name = player:get_player_name()
+	local ui_peruser,draw_lite_mode = unified_inventory.get_per_player_formspec(player_name)
+
+	unified_inventory.current_page[player_name] = page
+	local pagedef = unified_inventory.pages[page]
+
+	if not pagedef then
+		return "" -- Invalid page name
+	end
+
+	local formspec = {
+		"size[14,10]",
+		pagedef.formspec_prepend and "" or "no_prepend[]",
+		"background[-0.19,-0.25;14.4,10.75;ui_form_bg.png]" -- Background
+	}
+	local n = 4
+
+	if draw_lite_mode then
+		formspec[1] = "size[11,7.7]"
+		formspec[3] = "background[-0.19,-0.2;11.4,8.4;ui_form_bg.png]"
+	end
+
+	if unified_inventory.is_creative(player_name)
+	and page == "craft" then
+		formspec[n] = "background[0,"..(ui_peruser.formspec_y + 2)..";1,1;ui_single_slot.png]"
+		n = n+1
+	end
+
+	local perplayer_formspec = unified_inventory.get_per_player_formspec(player_name)
+	local fsdata = pagedef.get_formspec(player, perplayer_formspec)
+
+	formspec[n] = fsdata.formspec
+	n = n+1
+
+	local button_row = 0
+	local button_col = 0
+
+	-- Main buttons
+
+	local filtered_inv_buttons = {}
+
+	for i, def in pairs(unified_inventory.buttons) do
+		if not (draw_lite_mode and def.hide_lite) then
+			table.insert(filtered_inv_buttons, def)
+		end
+	end
+
+	for i, def in pairs(filtered_inv_buttons) do
+
+		if draw_lite_mode and i > 4 then
+			button_row = 1
+			button_col = 1
+		end
+
+		if def.type == "image" then
+			if (def.condition == nil or def.condition(player) == true) then
+				formspec[n] = "image_button["
+				formspec[n+1] = ( ui_peruser.main_button_x + 0.65 * (i - 1) - button_col * 0.65 * 4)
+				formspec[n+2] = ","..(ui_peruser.main_button_y + button_row * 0.7)..";0.8,0.8;"
+				formspec[n+3] = F(def.image)..";"
+				formspec[n+4] = F(def.name)..";]"
+				formspec[n+5] = "tooltip["..F(def.name)
+				formspec[n+6] = ";"..(def.tooltip or "").."]"
+				n = n+7
+			else
+				formspec[n] = "image["
+				formspec[n+1] = ( ui_peruser.main_button_x + 0.65 * (i - 1) - button_col * 0.65 * 4)
+				formspec[n+2] = ","..(ui_peruser.main_button_y + button_row * 0.7)..";0.8,0.8;"
+				formspec[n+3] = F(def.image).."^[colorize:#808080:alpha]"
+				n = n+4
+
+			end
+		end
+	end
+
+	if fsdata.draw_inventory ~= false then
+		-- Player inventory
+		formspec[n] = "listcolors[#00000000;#00000000]"
+		formspec[n+1] = "list[current_player;main;0,"..(ui_peruser.formspec_y + 3.5)..";8,4;]"
+		n = n+2
+	end
+
+	if fsdata.draw_item_list == false then
+		return table.concat(formspec, "")
+	end
+
+	-- Controls to flip items pages
+	local start_x = 9.2
+
+	if not draw_lite_mode then
+		formspec[n] =
+			"image_button[" .. (start_x + 0.6 * 0)
+				.. ",9;.8,.8;ui_skip_backward_icon.png;start_list;]"
+			.. "tooltip[start_list;" .. F(S("First page")) .. "]"
+
+			.. "image_button[" .. (start_x + 0.6 * 1)
+				.. ",9;.8,.8;ui_doubleleft_icon.png;rewind3;]"
+			.. "tooltip[rewind3;" .. F(S("Back three pages")) .. "]"
+			.. "image_button[" .. (start_x + 0.6 * 2)
+				.. ",9;.8,.8;ui_left_icon.png;rewind1;]"
+			.. "tooltip[rewind1;" .. F(S("Back one page")) .. "]"
+
+			.. "image_button[" .. (start_x + 0.6 * 3)
+				.. ",9;.8,.8;ui_right_icon.png;forward1;]"
+			.. "tooltip[forward1;" .. F(S("Forward one page")) .. "]"
+			.. "image_button[" .. (start_x + 0.6 * 4)
+				.. ",9;.8,.8;ui_doubleright_icon.png;forward3;]"
+			.. "tooltip[forward3;" .. F(S("Forward three pages")) .. "]"
+
+			.. "image_button[" .. (start_x + 0.6 * 5)
+				.. ",9;.8,.8;ui_skip_forward_icon.png;end_list;]"
+			.. "tooltip[end_list;" .. F(S("Last page")) .. "]"
+	else
+		formspec[n] =
+			"image_button[" .. (8.2 + 0.65 * 0)
+				.. ",5.8;.8,.8;ui_skip_backward_icon.png;start_list;]"
+			.. "tooltip[start_list;" .. F(S("First page")) .. "]"
+			.. "image_button[" .. (8.2 + 0.65 * 1)
+				.. ",5.8;.8,.8;ui_left_icon.png;rewind1;]"
+			.. "tooltip[rewind1;" .. F(S("Back one page")) .. "]"
+			.. "image_button[" .. (8.2 + 0.65 * 2)
+				.. ",5.8;.8,.8;ui_right_icon.png;forward1;]"
+			.. "tooltip[forward1;" .. F(S("Forward one page")) .. "]"
+			.. "image_button[" .. (8.2 + 0.65 * 3)
+				.. ",5.8;.8,.8;ui_skip_forward_icon.png;end_list;]"
+			.. "tooltip[end_list;" .. F(S("Last page")) .. "]"
+	end
+	n = n+1
+
+	-- Search box
+	formspec[n] = "field_close_on_enter[searchbox;false]"
+	n = n+1
+
+	if not draw_lite_mode then
+		formspec[n] = "field[9.5,8.325;3,1;searchbox;;"
+			.. F(unified_inventory.current_searchbox[player_name]) .. "]"
+		formspec[n+1] = "image_button[12.2,8.1;.8,.8;ui_search_icon.png;searchbutton;]"
+			.. "tooltip[searchbutton;" ..F(S("Search")) .. "]"
+		formspec[n+2] = "image_button[12.9,8.1;.8,.8;ui_reset_icon.png;searchresetbutton;]"
+			.. "tooltip[searchbutton;" ..F(S("Search")) .. "]"
+			.. "tooltip[searchresetbutton;" ..F(S("Reset search and display everything")) .. "]"
+	else
+		formspec[n] = "field[8.5,5.225;2.2,1;searchbox;;"
+			.. F(unified_inventory.current_searchbox[player_name]) .. "]"
+		formspec[n+1] = "image_button[10.3,5;.8,.8;ui_search_icon.png;searchbutton;]"
+			.. "tooltip[searchbutton;" ..F(S("Search")) .. "]"
+		formspec[n+2] = "image_button[11,5;.8,.8;ui_reset_icon.png;searchresetbutton;]"
+			.. "tooltip[searchbutton;" ..F(S("Search")) .. "]"
+			.. "tooltip[searchresetbutton;" ..F(S("Reset search and display everything")) .. "]"
+	end
+	n = n+3
+
+	local no_matches = S("No matching items")
+	if draw_lite_mode then
+		no_matches = S("No matches.")
+	end
+
+	-- Items list
+	if #unified_inventory.filtered_items_list[player_name] == 0 then
+		formspec[n] = "label[8.2,"..ui_peruser.form_header_y..";" .. F(no_matches) .. "]"
+	else
+		local dir = unified_inventory.active_search_direction[player_name]
+		local list_index = unified_inventory.current_index[player_name]
+		local page = math.floor(list_index / (ui_peruser.items_per_page) + 1)
+		local pagemax = math.floor(
+			(#unified_inventory.filtered_items_list[player_name] - 1)
+				/ (ui_peruser.items_per_page) + 1)
+		local item = {}
+		for y = 0, ui_peruser.pagerows - 1 do
+			for x = 0, ui_peruser.pagecols - 1 do
+				local name = unified_inventory.filtered_items_list[player_name][list_index]
+				local item = minetest.registered_items[name]
+				if item then
+					-- Clicked on current item: Flip crafting direction
+					if name == unified_inventory.current_item[player_name] then
+						local cdir = unified_inventory.current_craft_direction[player_name]
+						if cdir == "recipe" then
+							dir = "usage"
+						elseif cdir == "usage" then
+							dir = "recipe"
+						end
+					else
+					-- Default: use active search direction by default
+						dir = unified_inventory.active_search_direction[player_name]
+					end
+
+					local button_name = "item_button_" .. dir .. "_"
+						.. unified_inventory.mangle_for_formspec(name)
+					formspec[n] = ("item_image_button[%f,%f;.81,.81;%s;%s;]"):format(
+						8.2 + x * 0.7, ui_peruser.formspec_y + ui_peruser.page_y + y * 0.7,
+						name, button_name
+					)
+					formspec[n + 1] = ("tooltip[%s;%s \\[%s\\]]"):format(
+						button_name, minetest.formspec_escape(item.description),
+						item.mod_origin or "??"
+					)
+					n = n + 2
+					list_index = list_index + 1
+				end
+			end
+		end
+		formspec[n] = "label[8.2,"..ui_peruser.form_header_y..";"..F(S("Page")) .. ": "
+			.. S("@1 of @2",page,pagemax).."]"
+	end
+	n= n+1
+
+	if unified_inventory.activefilter[player_name] ~= "" then
+		formspec[n] = "label[8.2,"..(ui_peruser.form_header_y + 0.4)..";" .. F(S("Filter")) .. ":]"
+		formspec[n+1] = "label[9.1,"..(ui_peruser.form_header_y + 0.4)..";"..F(unified_inventory.activefilter[player_name]).."]"
+	end
+	return table.concat(formspec, "")
+end
+
+function unified_inventory.set_inventory_formspec(player, page)
+	if player then
+		player:set_inventory_formspec(unified_inventory.get_formspec(player, page))
+	end
+end
+
+--apply filter to the inventory list (create filtered copy of full one)
+function unified_inventory.apply_filter(player, filter, search_dir)
+	if not player then
+		return false
+	end
+	local player_name = player:get_player_name()
+	local lfilter = string.lower(filter)
+	local ffilter
+	if lfilter:sub(1, 6) == "group:" then
+		local groups = lfilter:sub(7):split(",")
+		ffilter = function(name, def)
+			for _, group in ipairs(groups) do
+				if not def.groups[group]
+				or def.groups[group] <= 0 then
+					return false
+				end
+			end
+			return true
+		end
+	else
+		ffilter = function(name, def)
+			local lname = string.lower(name)
+			local ldesc = string.lower(def.description)
+			return string.find(lname, lfilter, 1, true) or string.find(ldesc, lfilter, 1, true)
+		end
+	end
+	unified_inventory.filtered_items_list[player_name]={}
+	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 ~= ""
+		and ffilter(name, def) then
+			table.insert(unified_inventory.filtered_items_list[player_name], name)
+		end
+	end
+	table.sort(unified_inventory.filtered_items_list[player_name])
+	unified_inventory.filtered_items_list_size[player_name] = #unified_inventory.filtered_items_list[player_name]
+	unified_inventory.current_index[player_name] = 1
+	unified_inventory.activefilter[player_name] = filter
+	unified_inventory.active_search_direction[player_name] = search_dir
+	unified_inventory.set_inventory_formspec(player,
+	unified_inventory.current_page[player_name])
+end
+
+function unified_inventory.items_in_group(groups)
+	local items = {}
+	for name, item in pairs(minetest.registered_items) do
+		for _, group in pairs(groups:split(',')) do
+			if item.groups[group] then
+				table.insert(items, name)
+			end
+		end
+	end
+	return items
+end
+
+function unified_inventory.sort_inventory(inv)
+	local inlist = inv:get_list("main")
+	local typecnt = {}
+	local typekeys = {}
+	for _, st in ipairs(inlist) do
+		if not st:is_empty() then
+			local n = st:get_name()
+			local w = st:get_wear()
+			local m = st:get_metadata()
+			local k = string.format("%s %05d %s", n, w, m)
+			if not typecnt[k] then
+				typecnt[k] = {
+					name = n,
+					wear = w,
+					metadata = m,
+					stack_max = st:get_stack_max(),
+					count = 0,
+				}
+				table.insert(typekeys, k)
+			end
+			typecnt[k].count = typecnt[k].count + st:get_count()
+		end
+	end
+	table.sort(typekeys)
+	local outlist = {}
+	for _, k in ipairs(typekeys) do
+		local tc = typecnt[k]
+		while tc.count > 0 do
+			local c = math.min(tc.count, tc.stack_max)
+			table.insert(outlist, ItemStack({
+				name = tc.name,
+				wear = tc.wear,
+				metadata = tc.metadata,
+				count = c,
+			}))
+			tc.count = tc.count - c
+		end
+	end
+	if #outlist > #inlist then return end
+	while #outlist < #inlist do
+		table.insert(outlist, ItemStack(nil))
+	end
+	inv:set_list("main", outlist)
+end

mods/unified_inventory/item_names.lua

@@ -0,0 +1,76 @@
+-- Based on 4itemnames mod by 4aiman
+
+local item_names = {} -- [player_name] = { hud, dtime, itemname } 
+local dlimit = 3  -- HUD element will be hidden after this many seconds
+local air_hud_mod = minetest.get_modpath("4air")
+local hud_mod = minetest.get_modpath("hud")
+local hudbars_mod = minetest.get_modpath("hudbars")
+
+local function set_hud(player)
+	local player_name = player:get_player_name()
+	local off = {x=0, y=-70}
+	if air_hud_mod or hud_mod then
+		off.y = off.y - 20
+	elseif hudbars_mod then
+		off.y = off.y + 13
+	end
+	item_names[player_name] = {
+		hud = player:hud_add({
+			hud_elem_type = "text",
+			position = {x=0.5, y=1},
+			offset = off,
+			alignment = {x=0, y=0},
+			number = 0xFFFFFF,
+			text = "",
+		}),
+		dtime = dlimit,
+		index = 1,
+		itemname = ""
+	}
+end
+
+minetest.register_on_joinplayer(function(player)
+	minetest.after(0, set_hud, player)
+end)
+
+minetest.register_on_leaveplayer(function(player)
+	item_names[player:get_player_name()] = nil
+end)
+
+minetest.register_globalstep(function(dtime)
+	for _, player in pairs(minetest.get_connected_players()) do
+		local data = item_names[player:get_player_name()]
+		if not data or not data.hud then
+			data = {} -- Update on next step
+			set_hud(player)
+		end
+
+		local index = player:get_wield_index()
+		local stack = player:get_wielded_item()
+		local itemname = stack:get_name()
+
+		if data.hud and data.dtime < dlimit then
+			data.dtime = data.dtime + dtime
+			if data.dtime > dlimit then
+				player:hud_change(data.hud, 'text', "")
+			end
+		end
+
+		if data.hud and (itemname ~= data.itemname or index ~= data.index) then
+			data.itemname = itemname
+			data.index = index
+			data.dtime = 0
+
+			local desc = stack.get_meta
+				and stack:get_meta():get_string("description")
+
+			if not desc or desc == "" then
+				-- Try to use default description when none is set in the meta
+				local def = minetest.registered_items[itemname]
+				desc = def and def.description or ""
+			end
+			player:hud_change(data.hud, 'text', desc)
+		end
+	end
+end)
+

mods/unified_inventory/match_craft.lua

@@ -0,0 +1,409 @@
+-- match_craft.lua
+-- Find and automatically move inventory items to the crafting grid
+-- according to the recipe.
+
+--[[
+Retrieve items from inventory lists and calculate their total count.
+Return a table of "item name" - "total count" pairs.
+
+Arguments:
+	inv: minetest inventory reference
+	lists: names of inventory lists to use
+
+Example usage:
+	-- Count items in "main" and "craft" lists of player inventory
+	unified_inventory.count_items(player_inv_ref, {"main", "craft"})
+
+Example output:
+	{
+		["default:pine_wood"] = 2,
+		["default:acacia_wood"] = 4,
+		["default:chest"] = 3,
+		["default:axe_diamond"] = 2, -- unstackable item are counted too
+		["wool:white"] = 6
+	}
+]]--
+function unified_inventory.count_items(inv, lists)
+	local counts = {}
+
+	for i = 1, #lists do
+		local name = lists[i]
+		local size = inv:get_size(name)
+		local list = inv:get_list(name)
+
+		for j = 1, size do
+			local stack = list[j]
+
+			if not stack:is_empty() then
+				local item = stack:get_name()
+				local count = stack:get_count()
+
+				counts[item] = (counts[item] or 0) + count
+			end
+		end
+	end
+
+	return counts
+end
+
+--[[
+Retrieve craft recipe items and their positions in the crafting grid.
+Return a table of "craft item name" - "set of positions" pairs.
+
+Note that if craft width is not 3 then positions are recalculated as
+if items were placed on a 3x3 grid. Also note that craft can contain
+groups of items with "group:" prefix.
+
+Arguments:
+	craft: minetest craft recipe
+
+Example output:
+	-- Bed recipe
+	{
+		["wool:white"] = {[1] = true, [2] = true, [3] = true}
+		["group:wood"] = {[4] = true, [5] = true, [6] = true}
+	}
+--]]
+function unified_inventory.count_craft_positions(craft)
+	local positions = {}
+	local craft_items = craft.items
+	local craft_type = unified_inventory.registered_craft_types[craft.type]
+	                   or unified_inventory.craft_type_defaults(craft.type, {})
+	local display_width = craft_type.dynamic_display_size
+	                      and craft_type.dynamic_display_size(craft).width
+	                      or craft_type.width
+	local craft_width = craft_type.get_shaped_craft_width
+	                    and craft_type.get_shaped_craft_width(craft)
+	                    or display_width
+	local i = 0
+
+	for y = 1, 3 do
+		for x = 1, craft_width do
+			i = i + 1
+			local item = craft_items[i]
+
+			if item ~= nil then
+				local pos = 3 * (y - 1) + x
+				local set = positions[item]
+
+				if set ~= nil then
+					set[pos] = true
+				else
+					positions[item] = {[pos] = true}
+				end
+			end
+		end
+	end
+
+	return positions
+end
+
+--[[
+For every craft item find all matching inventory items.
+- If craft item is a group then find all inventory items that matches
+  this group.
+- If craft item is not a group (regular item) then find only this item.
+
+If inventory doesn't contain needed item then found set is empty for
+this item.
+
+Return a table of "craft item name" - "set of matching inventory items"
+pairs.
+
+Arguments:
+	inv_items: table with items names as keys
+	craft_items: table with items names or groups as keys
+
+Example output:
+	{
+		["group:wood"] = {
+			["default:pine_wood"] = true,
+			["default:acacia_wood"] = true
+		},
+		["wool:white"] = {
+			["wool:white"] = true
+		}
+	}
+--]]
+function unified_inventory.find_usable_items(inv_items, craft_items)
+	local get_group = minetest.get_item_group
+	local result = {}
+
+	for craft_item in pairs(craft_items) do
+		local group = craft_item:match("^group:(.+)")
+		local found = {}
+
+		if group ~= nil then
+			for inv_item in pairs(inv_items) do
+				if get_group(inv_item, group) > 0 then
+					found[inv_item] = true
+				end
+			end
+		else
+			if inv_items[craft_item] ~= nil then
+				found[craft_item] = true
+			end
+		end
+
+		result[craft_item] = found
+	end
+
+	return result
+end
+
+--[[
+Match inventory items with craft grid positions.
+For every position select the matching inventory item with maximum
+(total_count / (times_matched + 1)) value.
+
+If for some position matching item cannot be found or match count is 0
+then return nil.
+
+Return a table of "matched item name" - "set of craft positions" pairs
+and overall match count.
+
+Arguments:
+	inv_counts: table of inventory items counts from "count_items"
+	craft_positions: table of craft positions from "count_craft_positions"
+
+Example output:
+	match_table = {
+		["wool:white"] = {[1] = true, [2] = true, [3] = true}
+		["default:acacia_wood"] = {[4] = true, [6] = true}
+		["default:pine_wood"] = {[5] = true}
+	}
+	match_count = 2
+--]]
+function unified_inventory.match_items(inv_counts, craft_positions)
+	local usable = unified_inventory.find_usable_items(inv_counts, craft_positions)
+	local match_table = {}
+	local match_count
+	local matches = {}
+
+	for craft_item, pos_set in pairs(craft_positions) do
+		local use_set = usable[craft_item]
+
+		for pos in pairs(pos_set) do
+			local pos_item
+			local pos_count
+
+			for use_item in pairs(use_set) do
+				local count = inv_counts[use_item]
+				local times_matched = matches[use_item] or 0
+				local new_pos_count = math.floor(count / (times_matched + 1))
+
+				if pos_count == nil or pos_count < new_pos_count then
+					pos_item = use_item
+					pos_count = new_pos_count
+				end
+			end
+
+			if pos_item == nil or pos_count == 0 then
+				return nil
+			end
+
+			local set = match_table[pos_item]
+
+			if set ~= nil then
+				set[pos] = true
+			else
+				match_table[pos_item] = {[pos] = true}
+			end
+
+			matches[pos_item] = (matches[pos_item] or 0) + 1
+		end
+	end
+
+	for match_item, times_matched in pairs(matches) do
+		local count = inv_counts[match_item]
+		local item_count = math.floor(count / times_matched)
+
+		if match_count == nil or item_count < match_count then
+			match_count = item_count
+		end
+	end
+
+	return match_table, match_count
+end
+
+--[[
+Remove item from inventory lists.
+Return stack of actually removed items.
+
+This function replicates the inv:remove_item function but can accept
+multiple lists.
+
+Arguments:
+	inv: minetest inventory reference
+	lists: names of inventory lists
+	stack: minetest item stack
+--]]
+function unified_inventory.remove_item(inv, lists, stack)
+	local removed = ItemStack(nil)
+	local leftover = ItemStack(stack)
+
+	for i = 1, #lists do
+		if leftover:is_empty() then
+			break
+		end
+
+		local cur_removed = inv:remove_item(lists[i], leftover)
+		removed:add_item(cur_removed)
+		leftover:take_item(cur_removed:get_count())
+	end
+
+	return removed
+end
+
+--[[
+Add item to inventory lists.
+Return leftover stack.
+
+This function replicates the inv:add_item function but can accept
+multiple lists.
+
+Arguments:
+	inv: minetest inventory reference
+	lists: names of inventory lists
+	stack: minetest item stack
+--]]
+function unified_inventory.add_item(inv, lists, stack)
+	local leftover = ItemStack(stack)
+
+	for i = 1, #lists do
+		if leftover:is_empty() then
+			break
+		end
+
+		leftover = inv:add_item(lists[i], leftover)
+	end
+
+	return leftover
+end
+
+--[[
+Move items from source list to destination list if possible.
+Skip positions specified in exclude set.
+
+Arguments:
+	inv: minetest inventory reference
+	src_list: name of source list
+	dst_list: name of destination list
+	exclude: set of positions to skip
+--]]
+function unified_inventory.swap_items(inv, src_list, dst_list, exclude)
+	local size = inv:get_size(src_list)
+	local empty = ItemStack(nil)
+
+	for i = 1, size do
+		if exclude == nil or exclude[i] == nil then
+			local stack = inv:get_stack(src_list, i)
+
+			if not stack:is_empty() then
+				inv:set_stack(src_list, i, empty)
+				local leftover = inv:add_item(dst_list, stack)
+
+				if not leftover:is_empty() then
+					inv:set_stack(src_list, i, leftover)
+				end
+			end
+		end
+	end
+end
+
+--[[
+Move matched items to the destination list.
+
+If destination list position is already occupied with some other item
+then function tries to (in that order):
+1. Move it to the source list
+2. Move it to some other unused position in destination list itself
+3. Drop it to the ground if nothing else is possible.
+
+Arguments:
+	player: minetest player object
+	src_list: name of source list
+	dst_list: name of destination list
+	match_table: table of matched items
+	amount: amount of items per every position
+--]]
+function unified_inventory.move_match(player, src_list, dst_list, match_table, amount)
+	local inv = player:get_inventory()
+	local item_drop = minetest.item_drop
+	local src_dst_list = {src_list, dst_list}
+	local dst_src_list = {dst_list, src_list}
+
+	local needed = {}
+	local moved = {}
+
+	-- Remove stacks needed for craft
+	for item, pos_set in pairs(match_table) do
+		local stack = ItemStack(item)
+		local stack_max = stack:get_stack_max()
+		local bounded_amount = math.min(stack_max, amount)
+		stack:set_count(bounded_amount)
+
+		for pos in pairs(pos_set) do
+			needed[pos] = unified_inventory.remove_item(inv, dst_src_list, stack)
+		end
+	end
+
+	-- Add already removed stacks
+	for pos, stack in pairs(needed) do
+		local occupied = inv:get_stack(dst_list, pos)
+		inv:set_stack(dst_list, pos, stack)
+
+		if not occupied:is_empty() then
+			local leftover = unified_inventory.add_item(inv, src_dst_list, occupied)
+
+			if not leftover:is_empty() then
+				inv:set_stack(dst_list, pos, leftover)
+				local oversize = unified_inventory.add_item(inv, src_dst_list, stack)
+
+				if not oversize:is_empty() then
+					item_drop(oversize, player, player:get_pos())
+				end
+			end
+		end
+
+		moved[pos] = true
+	end
+
+	-- Swap items from unused positions to src (moved positions excluded)
+	unified_inventory.swap_items(inv, dst_list, src_list, moved)
+end
+
+--[[
+Find craft match and move matched items to the destination list.
+
+If match cannot be found or match count is smaller than the desired
+amount then do nothing.
+
+If amount passed is -1 then amount is defined by match count itself.
+This is used to indicate "craft All" case.
+
+Arguments:
+	player: minetest player object
+	src_list: name of source list
+	dst_list: name of destination list
+	craft: minetest craft recipe
+	amount: desired amount of output items
+--]]
+function unified_inventory.craftguide_match_craft(player, src_list, dst_list, craft, amount)
+	local inv = player:get_inventory()
+	local src_dst_list = {src_list, dst_list}
+
+	local counts = unified_inventory.count_items(inv, src_dst_list)
+	local positions = unified_inventory.count_craft_positions(craft)
+	local match_table, match_count = unified_inventory.match_items(counts, positions)
+
+	if match_table == nil or match_count < amount then
+		return
+	end
+
+	if amount == -1 then
+		amount = match_count
+	end
+
+	unified_inventory.move_match(player, src_list, dst_list, match_table, amount)
+end

mods/unified_inventory/mod.conf

@@ -0,0 +1,4 @@
+name = unified_inventory
+depends = default
+optional_depends = creative, sfinv, datastorage, farming
+description = Unified Inventory replaces the default survival and creative inventory. It adds a nicer interface and a number of features, such as a crafting guide.

mods/unified_inventory/register.lua

@@ -0,0 +1,489 @@
+local S = minetest.get_translator("unified_inventory")
+local NS = function(s) return s end
+local F = minetest.formspec_escape
+
+minetest.register_privilege("creative", {
+	description = S("Can use the creative inventory"),
+	give_to_singleplayer = false,
+})
+
+minetest.register_privilege("ui_full", {
+	description = S("Forces Unified Inventory to be displayed in Full mode if Lite mode is configured globally"),
+	give_to_singleplayer = false,
+})
+
+
+local trash = minetest.create_detached_inventory("trash", {
+	--allow_put = function(inv, listname, index, stack, player)
+	--	if unified_inventory.is_creative(player:get_player_name()) then
+	--		return stack:get_count()
+	--	else
+	--		return 0
+	--	end
+	--end,
+	on_put = function(inv, listname, index, stack, player)
+		inv:set_stack(listname, index, nil)
+		local player_name = player:get_player_name()
+		minetest.sound_play("trash", {to_player=player_name, gain = 1.0})
+	end,
+})
+trash:set_size("main", 1)
+
+unified_inventory.register_button("craft", {
+	type = "image",
+	image = "ui_craft_icon.png",
+	tooltip = S("Crafting Grid")
+})
+
+unified_inventory.register_button("craftguide", {
+	type = "image",
+	image = "ui_craftguide_icon.png",
+	tooltip = S("Crafting Guide")
+})
+
+unified_inventory.register_button("home_gui_set", {
+	type = "image",
+	image = "ui_sethome_icon.png",
+	tooltip = S("Set home position"),
+	hide_lite=true,
+	action = function(player)
+		local player_name = player:get_player_name()
+		if minetest.check_player_privs(player_name, {home=true}) then
+			unified_inventory.set_home(player, player:get_pos())
+			local home = unified_inventory.home_pos[player_name]
+			if home ~= nil then
+				minetest.sound_play("dingdong",
+						{to_player=player_name, gain = 1.0})
+				minetest.chat_send_player(player_name,
+					S("Home position set to: @1", minetest.pos_to_string(home)))
+			end
+		else
+			minetest.chat_send_player(player_name,
+				S("You don't have the \"home\" privilege!"))
+			unified_inventory.set_inventory_formspec(player, unified_inventory.current_page[player_name])
+		end
+	end,
+	condition = function(player)
+		return minetest.check_player_privs(player:get_player_name(), {home=true})
+	end,
+})
+
+unified_inventory.register_button("home_gui_go", {
+	type = "image",
+	image = "ui_gohome_icon.png",
+	tooltip = S("Go home"),
+	hide_lite=true,
+	action = function(player)
+		local player_name = player:get_player_name()
+		if minetest.check_player_privs(player_name, {home=true}) then
+			minetest.sound_play("teleport",
+				{to_player=player:get_player_name(), gain = 1.0})
+			unified_inventory.go_home(player)
+		else
+			minetest.chat_send_player(player_name,
+				S("You don't have the \"home\" privilege!"))
+			unified_inventory.set_inventory_formspec(player, unified_inventory.current_page[player_name])
+		end
+	end,
+	condition = function(player)
+		return minetest.check_player_privs(player:get_player_name(), {home=true})
+	end,
+})
+
+unified_inventory.register_button("misc_set_day", {
+	type = "image",
+	image = "ui_sun_icon.png",
+	tooltip = S("Set time to day"),
+	hide_lite=true,
+	action = function(player)
+		local player_name = player:get_player_name()
+		if minetest.check_player_privs(player_name, {settime=true}) then
+			minetest.sound_play("birds",
+					{to_player=player_name, gain = 1.0})
+			minetest.set_timeofday((6000 % 24000) / 24000)
+			minetest.chat_send_player(player_name,
+				S("Time of day set to 6am"))
+		else
+			minetest.chat_send_player(player_name,
+				S("You don't have the settime privilege!"))
+			unified_inventory.set_inventory_formspec(player, unified_inventory.current_page[player_name])
+		end
+	end,
+	condition = function(player)
+		return minetest.check_player_privs(player:get_player_name(), {settime=true})
+	end,
+})
+
+unified_inventory.register_button("misc_set_night", {
+	type = "image",
+	image = "ui_moon_icon.png",
+	tooltip = S("Set time to night"),
+	hide_lite=true,
+	action = function(player)
+		local player_name = player:get_player_name()
+		if minetest.check_player_privs(player_name, {settime=true}) then
+			minetest.sound_play("owl",
+					{to_player=player_name, gain = 1.0})
+			minetest.set_timeofday((21000 % 24000) / 24000)
+			minetest.chat_send_player(player_name,
+					S("Time of day set to 9pm"))
+		else
+			minetest.chat_send_player(player_name,
+					S("You don't have the settime privilege!"))
+			unified_inventory.set_inventory_formspec(player, unified_inventory.current_page[player_name])
+		end
+	end,
+	condition = function(player)
+		return minetest.check_player_privs(player:get_player_name(), {settime=true})
+	end,
+})
+
+unified_inventory.register_button("clear_inv", {
+	type = "image",
+	image = "ui_trash_icon.png",
+	tooltip = S("Clear inventory"),
+	action = function(player)
+		local player_name = player:get_player_name()
+		if not unified_inventory.is_creative(player_name) then
+			minetest.chat_send_player(player_name,
+					S("This button has been disabled outside"
+					.." of creative mode to prevent"
+					.." accidental inventory trashing."
+					.."\nUse the trash slot instead."))
+			unified_inventory.set_inventory_formspec(player, unified_inventory.current_page[player_name])
+			return
+		end
+		player:get_inventory():set_list("main", {})
+		minetest.chat_send_player(player_name, S('Inventory cleared!'))
+		minetest.sound_play("trash_all",
+				{to_player=player_name, gain = 1.0})
+	end,
+	condition = function(player)
+		return unified_inventory.is_creative(player:get_player_name())
+	end,
+})
+
+unified_inventory.register_page("craft", {
+	get_formspec = function(player, perplayer_formspec)
+
+		local formspecy = perplayer_formspec.formspec_y
+		local formheadery =  perplayer_formspec.form_header_y
+
+		local player_name = player:get_player_name()
+		local formspec = "background[2,"..formspecy..";6,3;ui_crafting_form.png]"
+		formspec = formspec.."background[0,"..(formspecy + 3.5)..";8,4;ui_main_inventory.png]"
+		formspec = formspec.."label[0,"..formheadery..";" ..F(S("Crafting")).."]"
+		formspec = formspec.."listcolors[#00000000;#00000000]"
+		formspec = formspec.."list[current_player;craftpreview;6,"..formspecy..";1,1;]"
+		formspec = formspec.."list[current_player;craft;2,"..formspecy..";3,3;]"
+		if unified_inventory.trash_enabled or unified_inventory.is_creative(player_name) or minetest.get_player_privs(player_name).give then
+			formspec = formspec.."label[7,"..(formspecy + 1.5)..";" .. F(S("Trash:")) .. "]"
+			formspec = formspec.."background[7,"..(formspecy + 2)..";1,1;ui_single_slot.png]"
+			formspec = formspec.."list[detached:trash;main;7,"..(formspecy + 2)..";1,1;]"
+		end
+		formspec = formspec.."listring[current_name;craft]"
+		formspec = formspec.."listring[current_player;main]"
+		if unified_inventory.is_creative(player_name) then
+			formspec = formspec.."label[0,"..(formspecy + 1.5)..";" .. F(S("Refill:")) .. "]"
+			formspec = formspec.."list[detached:"..F(player_name).."refill;main;0,"..(formspecy +2)..";1,1;]"
+		end
+		return {formspec=formspec}
+	end,
+})
+
+-- stack_image_button(): generate a form button displaying a stack of items
+--
+-- The specified item may be a group.  In that case, the group will be
+-- represented by some item in the group, along with a flag indicating
+-- that it's a group.  If the group contains only one item, it will be
+-- treated as if that item had been specified directly.
+
+local function stack_image_button(x, y, w, h, buttonname_prefix, item)
+	local name = item:get_name()
+	local count = item:get_count()
+	local show_is_group = false
+	local displayitem = name.." "..count
+	local selectitem = name
+	if name:sub(1, 6) == "group:" then
+		local group_name = name:sub(7)
+		local group_item = unified_inventory.get_group_item(group_name)
+		show_is_group = not group_item.sole
+		displayitem = group_item.item or "unknown"
+		selectitem = group_item.sole and displayitem or name
+	end
+	local label = show_is_group and "G" or ""
+	local buttonname = F(buttonname_prefix..unified_inventory.mangle_for_formspec(selectitem))
+	local button = string.format("item_image_button[%f,%f;%f,%f;%s;%s;%s]",
+			x, y, w, h,
+			F(displayitem), buttonname, label)
+	if show_is_group then
+		local groupstring, andcount = unified_inventory.extract_groupnames(name)
+		local grouptip
+		if andcount == 1 then
+			grouptip = S("Any item belonging to the @1 group", groupstring)
+		elseif andcount > 1 then
+			grouptip = S("Any item belonging to the groups @1", groupstring)
+		end
+		grouptip = F(grouptip)
+		if andcount >= 1 then
+			button = button  .. string.format("tooltip[%s;%s]", buttonname, grouptip)
+		end
+	end
+	return button
+end
+
+local recipe_text = {
+	recipe = NS("Recipe @1 of @2"),
+	usage = NS("Usage @1 of @2"),
+}
+local no_recipe_text = {
+	recipe = S("No recipes"),
+	usage = S("No usages"),
+}
+local role_text = {
+	recipe = S("Result"),
+	usage = S("Ingredient"),
+}
+local next_alt_text = {
+	recipe = S("Show next recipe"),
+	usage = S("Show next usage"),
+}
+local prev_alt_text = {
+	recipe = S("Show previous recipe"),
+	usage = S("Show previous usage"),
+}
+local other_dir = {
+	recipe = "usage",
+	usage = "recipe",
+}
+
+unified_inventory.register_page("craftguide", {
+	get_formspec = function(player, perplayer_formspec)
+
+		local formspecy =    perplayer_formspec.formspec_y
+		local formheadery =  perplayer_formspec.form_header_y
+		local craftresultx = perplayer_formspec.craft_result_x
+		local craftresulty = perplayer_formspec.craft_result_y
+
+		local player_name = player:get_player_name()
+		local player_privs = minetest.get_player_privs(player_name)
+		local fs = {
+			"background[0,"..(formspecy + 3.5)..";8,4;ui_main_inventory.png]",
+			"label[0,"..formheadery..";" .. F(S("Crafting Guide")) .. "]",
+			"listcolors[#00000000;#00000000]"
+		}
+		local item_name = unified_inventory.current_item[player_name]
+		if not item_name then
+			return { formspec = table.concat(fs) }
+		end
+
+		local item_name_shown
+		if minetest.registered_items[item_name]
+				and minetest.registered_items[item_name].description then
+			item_name_shown = S("@1 (@2)",
+				minetest.registered_items[item_name].description, item_name)
+		else
+			item_name_shown = item_name
+		end
+
+		local dir = unified_inventory.current_craft_direction[player_name]
+		local rdir = dir == "recipe" and "usage" or "recipe"
+
+		local crafts = unified_inventory.crafts_for[dir][item_name]
+		local alternate = unified_inventory.alternate[player_name]
+		local alternates, craft
+		if crafts and #crafts > 0 then
+			alternates = #crafts
+			craft = crafts[alternate]
+		end
+		local has_give = player_privs.give or unified_inventory.is_creative(player_name)
+
+		fs[#fs + 1] = "background[0.5,"..(formspecy + 0.2)..";8,3;ui_craftguide_form.png]"
+		fs[#fs + 1] = string.format("textarea[%f,%f;10,1;;%s: %s;]",
+				craftresultx, craftresulty, F(role_text[dir]), item_name_shown)
+		fs[#fs + 1] = stack_image_button(0, formspecy, 1.1, 1.1,
+				"item_button_" .. rdir .. "_", ItemStack(item_name))
+
+		if not craft then
+			-- No craft recipes available for this item.
+			fs[#fs + 1] = "label[5.5,"..(formspecy + 2.35)..";"
+					.. F(no_recipe_text[dir]) .. "]"
+			local no_pos = dir == "recipe" and 4.5 or 6.5
+			local item_pos = dir == "recipe" and 6.5 or 4.5
+			fs[#fs + 1] = "image["..no_pos..","..formspecy..";1.1,1.1;ui_no.png]"
+			fs[#fs + 1] = stack_image_button(item_pos, formspecy, 1.1, 1.1,
+				"item_button_" .. other_dir[dir] .. "_", ItemStack(item_name))
+			if has_give then
+				fs[#fs + 1] = "label[0," .. (formspecy + 2.10) .. ";" .. F(S("Give me:")) .. "]"
+						.. "button[0,  " .. (formspecy + 2.7) .. ";0.6,0.5;craftguide_giveme_1;1]"
+						.. "button[0.6," .. (formspecy + 2.7) .. ";0.7,0.5;craftguide_giveme_10;10]"
+						.. "button[1.3," .. (formspecy + 2.7) .. ";0.8,0.5;craftguide_giveme_99;99]"
+			end
+			return { formspec = table.concat(fs) }
+		end
+
+		local craft_type = unified_inventory.registered_craft_types[craft.type] or
+				unified_inventory.craft_type_defaults(craft.type, {})
+		if craft_type.icon then
+			fs[#fs + 1] = string.format("image[%f,%f;%f,%f;%s]",
+					5.7, (formspecy + 0.05), 0.5, 0.5, craft_type.icon)
+		end
+		fs[#fs + 1] = "label[5.5,"..(formspecy + 1)..";" .. F(craft_type.description).."]"
+		fs[#fs + 1] = stack_image_button(6.5, formspecy, 1.1, 1.1,
+				"item_button_usage_", ItemStack(craft.output))
+
+		local display_size = craft_type.dynamic_display_size
+				and craft_type.dynamic_display_size(craft)
+				or { width = craft_type.width, height = craft_type.height }
+		local craft_width = craft_type.get_shaped_craft_width
+				and craft_type.get_shaped_craft_width(craft)
+				or display_size.width
+
+		-- This keeps recipes aligned to the right,
+		-- so that they're close to the arrow.
+		local xoffset = 5.5
+		-- Offset factor for crafting grids with side length > 4
+		local of = (3/math.max(3, math.max(display_size.width, display_size.height)))
+		local od = 0
+		-- Minimum grid size at which size optimazation measures kick in
+		local mini_craft_size = 6
+		if display_size.width >= mini_craft_size then
+			od = math.max(1, display_size.width - 2)
+			xoffset = xoffset - 0.1
+		end
+		-- Size modifier factor
+		local sf = math.min(1, of * (1.05 + 0.05*od))
+		-- Button size
+		local bsize_h = 1.1 * sf
+		local bsize_w = bsize_h
+		if display_size.width >= mini_craft_size then
+			bsize_w = 1.175 * sf
+		end
+		if (bsize_h > 0.35 and display_size.width) then
+		for y = 1, display_size.height do
+		for x = 1, display_size.width do
+			local item
+			if craft and x <= craft_width then
+				item = craft.items[(y-1) * craft_width + x]
+			end
+			-- Flipped x, used to build formspec buttons from right to left
+			local fx = display_size.width - (x-1)
+			-- x offset, y offset
+			local xof = (fx-1) * of + of
+			local yof = (y-1) * of + 1
+			if item then
+				fs[#fs + 1] = stack_image_button(
+						xoffset - xof, formspecy - 1 + yof, bsize_w, bsize_h,
+						"item_button_recipe_",
+						ItemStack(item))
+			else
+				-- Fake buttons just to make grid
+				fs[#fs + 1] = string.format("image_button[%f,%f;%f,%f;ui_blank_image.png;;]",
+						xoffset - xof, formspecy - 1 + yof, bsize_w, bsize_h)
+			end
+		end
+		end
+		else
+			-- Error
+			fs[#fs + 1] = string.format("label[2,%f;%s]",
+				formspecy, F(S("This recipe is too\nlarge to be displayed.")))
+		end
+
+		if craft_type.uses_crafting_grid and display_size.width <= 3 then
+			fs[#fs + 1] = "label[0," .. (formspecy + 0.9) .. ";" .. F(S("To craft grid:")) .. "]"
+					.. "button[0,  " .. (formspecy + 1.5) .. ";0.6,0.5;craftguide_craft_1;1]"
+					.. "button[0.6," .. (formspecy + 1.5) .. ";0.7,0.5;craftguide_craft_10;10]"
+					.. "button[1.3," .. (formspecy + 1.5) .. ";0.8,0.5;craftguide_craft_max;" .. F(S("All")) .. "]"
+		end
+		if has_give then
+			fs[#fs + 1] = "label[0," .. (formspecy + 2.1) .. ";" .. F(S("Give me:")) .. "]"
+					.. "button[0,  " .. (formspecy + 2.7) .. ";0.6,0.5;craftguide_giveme_1;1]"
+					.. "button[0.6," .. (formspecy + 2.7) .. ";0.7,0.5;craftguide_giveme_10;10]"
+					.. "button[1.3," .. (formspecy + 2.7) .. ";0.8,0.5;craftguide_giveme_99;99]"
+		end
+
+		if alternates and alternates > 1 then
+			fs[#fs + 1] = "label[5.5," .. (formspecy + 1.6) .. ";"
+					.. F(S(recipe_text[dir], alternate, alternates)) .. "]"
+					.. "image_button[5.5," .. (formspecy + 2) .. ";1,1;ui_left_icon.png;alternate_prev;]"
+					.. "image_button[6.5," .. (formspecy + 2) .. ";1,1;ui_right_icon.png;alternate;]"
+					.. "tooltip[alternate_prev;" .. F(prev_alt_text[dir]) .. "]"
+					.. "tooltip[alternate;" .. F(next_alt_text[dir]) .. "]"
+		end
+		return { formspec = table.concat(fs) }
+	end,
+})
+
+local function craftguide_giveme(player, formname, fields)
+	local player_name = player:get_player_name()
+	local player_privs = minetest.get_player_privs(player_name)
+	if not player_privs.give and
+			not unified_inventory.is_creative(player_name) then
+		minetest.log("action", "[unified_inventory] Denied give action to player " ..
+			player_name)
+		return
+	end
+
+	local amount
+	for k, v in pairs(fields) do
+		amount = k:match("craftguide_giveme_(.*)")
+		if amount then break end
+	end
+
+	amount = tonumber(amount) or 0
+	if amount == 0 then return end
+
+	local output = unified_inventory.current_item[player_name]
+	if (not output) or (output == "") then return end
+
+	local player_inv = player:get_inventory()
+
+	player_inv:add_item("main", {name = output, count = amount})
+end
+
+local function craftguide_craft(player, formname, fields)
+	local amount
+	for k, v in pairs(fields) do
+		amount = k:match("craftguide_craft_(.*)")
+		if amount then break end
+	end
+	if not amount then return end
+
+	amount = tonumber(amount) or -1 -- fallback for "all"
+	if amount == 0 or amount < -1 or amount > 99 then return end
+
+	local player_name = player:get_player_name()
+
+	local output = unified_inventory.current_item[player_name] or ""
+	if output == "" then return end
+
+	local crafts = unified_inventory.crafts_for[
+		unified_inventory.current_craft_direction[player_name]][output] or {}
+	if #crafts == 0 then return end
+
+	local alternate = unified_inventory.alternate[player_name]
+
+	local craft = crafts[alternate]
+	if craft.width > 3 then return end
+
+	unified_inventory.craftguide_match_craft(player, "main", "craft", craft, amount)
+
+	unified_inventory.set_inventory_formspec(player, "craft")
+end
+
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	if formname ~= "" then
+		return
+	end
+
+	for k, v in pairs(fields) do
+		if k:match("craftguide_craft_") then
+			craftguide_craft(player, formname, fields)
+			return
+		end
+		if k:match("craftguide_giveme_") then
+			craftguide_giveme(player, formname, fields)
+			return
+		end
+	end
+end)

mods/unified_inventory/settingtypes.txt

@@ -0,0 +1,11 @@
+#Enabling lite mode enables a smaller and simpler version of the Unified
+#Inventory, optimized for small displays.
+unified_inventory_lite (Lite mode) bool false
+
+#If enabled, bags will be made available which can be used to extend
+#inventory storage size.
+unified_inventory_bags (Enable bags) bool true
+
+#If enabled, the trash slot can be used by those without both creative
+#and the give privilege.
+unified_inventory_trash (Enable trash) bool true