Update version number to 0.4.dev-20120326 because much has changed from the previous one

- Do not rewrite if nothing needs to be changed
- Update at program exit, in addition to updating when continuing from main menu to game

.gitignore

@@ -1,5 +1,29 @@
-map/*
-world/*
+## Generic ignorable patterns and files
+*~
+.*.swp
+*bak*
+tags
+*.vim
+
+## Non-static Minetest directories
+/bin/
+/games/*
+!/games/minimal/
+/cache/
+/textures/
+/sounds/
+/mods/*
+!/mods/minetest/
+/mods/minetest/*
+!/mods/minetest/mods_here.txt
+/worlds/
+/world/
+
+## Configuration/log files
+minetest.conf
+debug.txt
+
+## Build files
 CMakeFiles/*
 src/CMakeFiles/*
 src/Makefile
@@ -9,19 +33,13 @@ src/jthread/CMakeFiles/*
 src/jthread/Makefile
 src/jthread/cmake_config.h
 src/jthread/cmake_install.cmake
-.*.swp
-minetest.conf
-bin/
+src/jthread/libjthread.a
+src/lua/build/
+src/lua/CMakeFiles/
 CMakeCache.txt
 CPackConfig.cmake
 CPackSourceConfig.cmake
 Makefile
 cmake_install.cmake
-src/jthread/libjthread.a
-debug.txt
-bin/debug.txt
-minetestmapper/map.png
 locale/
-src/lua/build/
-src/lua/CMakeFiles/
-*bak*
+

.hgignore

@@ -1,25 +0,0 @@
-map/*
-world/*
-CMakeFiles/*
-src/CMakeFiles/*
-src/Makefile
-src/cmake_config.h
-src/cmake_install.cmake
-src/jthread/CMakeFiles/*
-src/jthread/Makefile
-src/jthread/cmake_config.h
-src/jthread/cmake_install.cmake
-src/.*.swp
-src/sqlite/libsqlite3.a
-src/session.vim
-util/uloste.png
-minetest.conf
-debug.txt
-bin/
-CMakeCache.txt
-CPackConfig.cmake
-CPackSourceConfig.cmake
-Makefile
-cmake_install.cmake
-src/jthread/libjthread.a
-data_temp/*

.hgtags

@@ -1 +0,0 @@
-a519d683251105654d2a146ae7b91d3850b6504c 0.2.20110731_3

CMakeLists.txt

@@ -10,7 +10,7 @@ project(minetest)
 # Also remember to set PROTOCOL_VERSION in clientserver.h when releasing
 set(VERSION_MAJOR 0)
 set(VERSION_MINOR 4)
-set(VERSION_PATCH dev-20111201-0)
+set(VERSION_PATCH dev-20120326)
 set(VERSION_STRING "${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}")
 
 MESSAGE(STATUS "*** Will build version ${VERSION_STRING} ***")
@@ -49,26 +49,61 @@ find_package(Irrlicht)
 #
 
 if(WIN32)
-	set(DATADIR "data")
+	set(SHAREDIR ".")
 	set(BINDIR "bin")
 	set(DOCDIR "doc")
 	set(EXAMPLE_CONF_DIR ".")
+	set(LOCALEDIR "locale")
 elseif(APPLE)
-	# random placeholders
-	set(DATADIR "share/${PROJECT_NAME}")
+	# Random placeholders; this isn't usually used and may not work
+	# See https://github.com/toabi/minetest-mac/
+	set(SHAREDIR "share/${PROJECT_NAME}")
 	set(BINDIR "bin")
 	set(DOCDIR "share/doc/${PROJECT_NAME}")
-	set(EXAMPLE_CONF_DIR ".")
+	set(EXAMPLE_CONF_DIR ${DOCDIR})
+	set(LOCALEDIR "locale")
 elseif(UNIX) # Linux, BSD etc
-	set(DATADIR "share/${PROJECT_NAME}")
-	set(BINDIR "bin")
-	set(DOCDIR "share/doc/${PROJECT_NAME}")
-	set(EXAMPLE_CONF_DIR "share/doc/${PROJECT_NAME}")
+	if(RUN_IN_PLACE)
+		set(SHAREDIR ".")
+		set(BINDIR "bin")
+		set(DOCDIR "doc")
+		set(EXAMPLE_CONF_DIR ".")
+		set(MANDIR "unix/man")
+		set(XDG_APPS_DIR "unix/applications")
+		set(ICONDIR "unix/icons")
+		set(LOCALEDIR "locale")
+	else()
+		set(SHAREDIR "share/${PROJECT_NAME}")
+		set(BINDIR "bin")
+		set(DOCDIR "share/doc/${PROJECT_NAME}")
+		set(MANDIR "share/man")
+		set(EXAMPLE_CONF_DIR ${DOCDIR})
+		set(XDG_APPS_DIR "share/applications")
+		set(ICONDIR "share/icons")
+		set(LOCALEDIR "share/locale")
+	endif()
+endif()
+
+install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/builtin" DESTINATION "${SHAREDIR}")
+install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/games/minetest" DESTINATION "${SHAREDIR}/games")
+if(BUILD_CLIENT)
+	#install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/sounds/base/pack" DESTINATION "${SHAREDIR}/sounds/base")
+	install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/textures/base/pack" DESTINATION "${SHAREDIR}/textures/base")
+endif()
+if(RUN_IN_PLACE)
+	install(FILES "${CMAKE_CURRENT_SOURCE_DIR}/mods/minetest/mods_here.txt" DESTINATION "${SHAREDIR}/mods/minetest")
 endif()
 
 install(FILES "README.txt" DESTINATION "${DOCDIR}")
-install(FILES "doc/changelog.txt" DESTINATION "${DOCDIR}")
-install(FILES "minetest.conf.example" DESTINATION "${DOCDIR}")
+install(FILES "doc/lua_api.txt" DESTINATION "${DOCDIR}")
+install(FILES "doc/mapformat.txt" DESTINATION "${DOCDIR}")
+install(FILES "minetest.conf.example" DESTINATION "${EXAMPLE_CONF_DIR}")
+
+if(UNIX)
+	install(FILES "doc/minetest.6" "doc/minetestserver.6" DESTINATION "${MANDIR}/man6")
+	install(FILES "misc/minetest.desktop" DESTINATION "${XDG_APPS_DIR}")
+	install(FILES "misc/minetest-icon.svg" DESTINATION "${ICONDIR}/hicolor/scalable/apps")
+endif()
 
 #
 # Subdirectories

README.txt

@@ -1,50 +1,75 @@
 Minetest-c55
----------------
-An InfiniMiner/Minecraft inspired game.
-Copyright (c) 2010-2011 Perttu Ahola <celeron55@gmail.com>
-(see source files for other contributors)
+============
 
-Further documentation:
+An InfiniMiner/Minecraft inspired game.
+
+Copyright (c) 2010-2012 Perttu Ahola <celeron55@gmail.com>
+and ther contributors (see source file comments and the version control log)
+
+In case you downloaded the source code:
+---------------------------------------
+If you downloaded the Minetest Engine source code in which this file is
+contained, you probably want to download the minetest_game project too:
+  https://github.com/celeron55/minetest_game/
+See the README.txt in it.
+
+Further documentation
 ----------------------
-- Website: http://celeron.55.lt/~celeron55/minetest/
-- Wiki: http://celeron.55.lt/~celeron55/minetest/wiki/
-- Forum: http://celeron.55.lt/~celeron55/minetest/forum/
+- Website: http://c55.me/minetest/
+- Wiki: http://c55.me/minetest/wiki/
+- Forum: http://c55.me/minetest/forum/
+- Github: https://github.com/celeron55/minetest/
 - doc/ directory of source distribution
 
-This game is not finished:
+This game is not finished
 --------------------------
 - Don't expect it to work as well as a finished game will.
-- Please report any bugs to me. debug.txt is useful.
+- Please report any bugs. When doing that, debug.txt is useful.
 
-Controls:
----------
-- See the in-game pause menu
+Default Controls
+-----------------
+- WASD: Move
+- Space: Jump
+- E: Go down
+- Shift: Sneak
+- Q: Drop item
+- I: Open inventory
+- Mouse: Turn/look
 - Settable in the configuration file, see the section below.
 
-Map directory:
---------------
-- Map is stored in a directory, which can be removed to generate a new map.
-- There is a command-line option for it: --map-dir
-- For a RUN_IN_PLACE build, it is located in:
-		../world
-- Otherwise something like this:
-	Windows: C:\Documents and Settings\user\Application Data\minetest\world
-	Linux: ~/.minetest/world
-	OS X: ~/Library/Application Support/minetest/world
+Paths
+------
+$bin   - Compiled binaries
+$share - Cistributed read-only data
+$user  - User-created modifiable data
+
+Windows .zip / RUN_IN_PLACE source:
+$bin   = bin
+$share = .
+$user  = .
+
+Linux installed:
+$bin   = /usr/bin
+$share = /usr/share/minetest
+$user  = ~/.minetest
+
+OS X:
+$bin   = ?
+$share = ?
+$user  = ~/Library/Application Support/minetest
+
+World directory
+----------------
+- Worlds can be found as separate folders in:
+    $user/worlds/
 
 Configuration file:
 -------------------
-- An optional configuration file can be used. See minetest.conf.example.
-- Path to file can be passed as a parameter to the executable:
+- Default location:
+    $user/minetest.conf
+- It is created by Minetest when it is ran the first time.
+- A specific file can be specified on the command line:
 	--config <path-to-file>
-- Defaults:
-	- If built with -DRUN_IN_PLACE=1:
-		../minetest.conf
-		../../minetest.conf
-	- Otherwise something like this:
-		Windows: C:\Documents and Settings\user\Application Data\minetest\minetest.conf
-		Linux: ~/.minetest/minetest.conf
-		OS X: ~/Library/Application Support/minetest.conf
 
 Command-line options:
 ---------------------
@@ -94,12 +119,13 @@ Compiling on Windows:
 		http://gnuwin32.sourceforge.net/downlinks/gettext.php
 		- This is used for other UI languages. Feel free to leave it out.
 	* And, of course, Minetest-c55:
-		http://celeron.55.lt/~celeron55/minetest/download
+		http://c55.me/minetest/download
 - Steps:
 	- Select a directory called DIR hereafter in which you will operate.
 	- Make sure you have CMake and a compiler installed.
 	- Download all the other stuff to DIR and extract them into there.
 	  ("extract here", not "extract to packagename/")
+	  NOTE: zlib125dll.zip needs to be extracted into zlib125dll
 	- All those packages contain a nice base directory in them, which
 	  should end up being the direct subdirectories of DIR.
 	- You will end up with a directory structure like this (+=dir, -=file):
@@ -176,35 +202,49 @@ Compiling on Windows:
 	If using MinGW:
 		- Using the command line, browse to the build directory and run 'make'
 		  (or mingw32-make or whatever it happens to be)
+		- You may need to copy some of the downloaded DLLs into bin/, see what
+		  running the produced executable tells you it doesn't have.
 		- You should now have a working game with the executable in
 			DIR/minetest/bin/minetest.exe
 
 Windows releases of minetest are built using a bat script like this:
 --------------------------------------------------------------------
 
+set sourcedir=%CD%
 set installpath="C:\tmp\minetest_install"
 set irrlichtpath="C:\tmp\irrlicht-1.7.2"
 
-set sourcedir=%CD%
 set builddir=%sourcedir%\bvc10
 mkdir %builddir%
 pushd %builddir%
 cmake %sourcedir% -G "Visual Studio 10" -DIRRLICHT_SOURCE_DIR=%irrlichtpath% -DRUN_IN_PLACE=1 -DCMAKE_INSTALL_PREFIX=%installpath%
+if %errorlevel% neq 0 goto fail
 "C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe" ALL_BUILD.vcxproj /p:Configuration=Release
+if %errorlevel% neq 0 goto fail
 "C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe" INSTALL.vcxproj /p:Configuration=Release
+if %errorlevel% neq 0 goto fail
 "C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe" PACKAGE.vcxproj /p:Configuration=Release
+if %errorlevel% neq 0 goto fail
 popd
+echo Finished.
+exit /b 0
 
-License of Minetest-c55 textures
---------------------------------
+:fail
+popd
+echo Failed.
+exit /b 1
 
-This does not apply to texture packs made by others.
+License of Minetest-c55 textures and sounds
+-------------------------------------------
+
+This applies to textures and sounds contained in the main Minetest
+distribution.
 
 Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)                                 
 http://creativecommons.org/licenses/by-sa/3.0/
 
-License of Minetest-c55
------------------------
+License of Minetest-c55 source code
+-----------------------------------
 
 Minetest-c55
 Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
@@ -276,3 +316,21 @@ FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 IN THE SOFTWARE.
 
 
+Fonts
+---------------
+
+DejaVu Sans Mono:
+
+  Fonts are (c) Bitstream (see below). DejaVu changes are in public domain.
+  Glyphs imported from Arev fonts are (c) Tavmjong Bah (see below)
+
+  Bitstream Vera Fonts Copyright:
+
+  Copyright (c) 2003 by Bitstream, Inc. All Rights Reserved. Bitstream Vera is
+  a trademark of Bitstream, Inc.
+
+  Arev Fonts Copyright:
+
+  Copyright (c) 2006 by Tavmjong Bah. All Rights Reserved.
+
+

builtin/builtin.lua

@@ -0,0 +1,804 @@
+--
+-- This file contains built-in stuff in Minetest implemented in Lua.
+--
+-- It is always loaded and executed after registration of the C API,
+-- before loading and running any mods.
+--
+
+--
+-- Override some Lua library functions
+--
+
+print = minetest.debug
+
+--
+--
+--
+
+function basic_dump2(o)
+	if type(o) == "number" then
+		return tostring(o)
+	elseif type(o) == "string" then
+		return string.format("%q", o)
+	elseif type(o) == "boolean" then
+		return tostring(o)
+	elseif type(o) == "function" then
+		return "<function>"
+	elseif type(o) == "userdata" then
+		return "<userdata>"
+	elseif type(o) == "nil" then
+		return "nil"
+	else
+		error("cannot dump a " .. type(o))
+		return nil
+	end
+end
+
+function dump2(o, name, dumped)
+	name = name or "_"
+	dumped = dumped or {}
+	io.write(name, " = ")
+	if type(o) == "number" or type(o) == "string" or type(o) == "boolean"
+			or type(o) == "function" or type(o) == "nil"
+			or type(o) == "userdata" then
+		io.write(basic_dump2(o), "\n")
+	elseif type(o) == "table" then
+		if dumped[o] then
+			io.write(dumped[o], "\n")
+		else
+			dumped[o] = name
+			io.write("{}\n") -- new table
+			for k,v in pairs(o) do
+				local fieldname = string.format("%s[%s]", name, basic_dump2(k))
+				dump2(v, fieldname, dumped)
+			end
+		end
+	else
+		error("cannot dump a " .. type(o))
+		return nil
+	end
+end
+
+function dump(o, dumped)
+	dumped = dumped or {}
+	if type(o) == "number" then
+		return tostring(o)
+	elseif type(o) == "string" then
+		return string.format("%q", o)
+	elseif type(o) == "table" then
+		if dumped[o] then
+			return "<circular reference>"
+		end
+		dumped[o] = true
+		local t = {}
+		for k,v in pairs(o) do
+			t[#t+1] = "" .. k .. " = " .. dump(v, dumped)
+		end
+		return "{" .. table.concat(t, ", ") .. "}"
+	elseif type(o) == "boolean" then
+		return tostring(o)
+	elseif type(o) == "function" then
+		return "<function>"
+	elseif type(o) == "userdata" then
+		return "<userdata>"
+	elseif type(o) == "nil" then
+		return "nil"
+	else
+		error("cannot dump a " .. type(o))
+		return nil
+	end
+end
+
+--
+-- Item definition helpers
+--
+
+function minetest.inventorycube(img1, img2, img3)
+	img2 = img2 or img1
+	img3 = img3 or img1
+	return "[inventorycube"
+			.. "{" .. img1:gsub("%^", "&")
+			.. "{" .. img2:gsub("%^", "&")
+			.. "{" .. img3:gsub("%^", "&")
+end
+
+function minetest.pos_to_string(pos)
+	return "(" .. pos.x .. "," .. pos.y .. "," .. pos.z .. ")"
+end
+
+function minetest.get_pointed_thing_position(pointed_thing, above)
+	if pointed_thing.type == "node" then
+		if above then
+			-- The position where a node would be placed
+			return pointed_thing.above
+		else
+			-- The position where a node would be dug
+			return pointed_thing.under
+		end
+	elseif pointed_thing.type == "object" then
+		obj = pointed_thing.ref
+		if obj ~= nil then
+			return obj:getpos()
+		else
+			return nil
+		end
+	else
+		return nil
+	end
+end
+
+function minetest.dir_to_facedir(dir)
+	if math.abs(dir.x) > math.abs(dir.z) then
+		if dir.x < 0 then
+			return 3
+		else
+			return 1
+		end
+	else
+		if dir.z < 0 then
+			return 2
+		else
+			return 0
+		end
+	end
+end
+
+function minetest.dir_to_wallmounted(dir)
+	if math.abs(dir.y) > math.max(math.abs(dir.x), math.abs(dir.z)) then
+		if dir.y < 0 then
+			return 1
+		else
+			return 0
+		end
+	elseif math.abs(dir.x) > math.abs(dir.z) then
+		if dir.x < 0 then
+			return 3
+		else
+			return 2
+		end
+	else
+		if dir.z < 0 then
+			return 5
+		else
+			return 4
+		end
+	end
+end
+
+function minetest.get_node_drops(nodename, toolname)
+	local drop = ItemStack({name=nodename}):get_definition().drop
+	if drop == nil then
+		-- default drop
+		return {ItemStack({name=nodename})}
+	elseif type(drop) == "string" then
+		-- itemstring drop
+		return {ItemStack(drop)}
+	elseif drop.items == nil then
+		-- drop = {} to disable default drop
+		return {}
+	end
+
+	-- Extended drop table
+	local got_items = {}
+	local got_count = 0
+	local _, item, tool
+	for _, item in ipairs(drop.items) do
+		local good_rarity = true
+		local good_tool = true
+		if item.rarity ~= nil then
+			good_rarity = item.rarity < 1 or math.random(item.rarity) == 1
+		end
+		if item.tools ~= nil then
+			good_tool = false
+			for _, tool in ipairs(item.tools) do
+				if tool:sub(1, 1) == '~' then
+					good_tool = toolname:find(tool:sub(2)) ~= nil
+				else
+					good_tool = toolname == tool
+				end
+				if good_tool then
+					break
+				end
+			end
+        	end
+		if good_rarity and good_tool then
+			got_count = got_count + 1
+			for _, add_item in ipairs(item.items) do
+				got_items[#got_items+1] = add_item
+			end
+			if drop.max_items ~= nil and got_count == drop.max_items then
+				break
+			end
+		end
+	end
+	return got_items
+end
+
+function minetest.item_place_node(itemstack, placer, pointed_thing)
+	local item = itemstack:peek_item()
+	local def = itemstack:get_definition()
+	if def.type == "node" and pointed_thing.type == "node" then
+		local pos = pointed_thing.above
+		local oldnode = minetest.env:get_node(pos)
+		local olddef = ItemStack({name=oldnode.name}):get_definition()
+
+		if not olddef.buildable_to then
+			minetest.log("info", placer:get_player_name() .. " tried to place"
+				.. " node in invalid position " .. minetest.pos_to_string(pos)
+				.. ", replacing " .. oldnode.name)
+			return
+		end
+
+		minetest.log("action", placer:get_player_name() .. " places node "
+			.. def.name .. " at " .. minetest.pos_to_string(pos))
+
+		local newnode = {name = def.name, param1 = 0, param2 = 0}
+
+		-- Calculate direction for wall mounted stuff like torches and signs
+		if def.paramtype2 == 'wallmounted' then
+			local under = pointed_thing.under
+			local above = pointed_thing.above
+			local dir = {x = under.x - above.x, y = under.y - above.y, z = under.z - above.z}
+			newnode.param2 = minetest.dir_to_wallmounted(dir)
+		-- Calculate the direction for furnaces and chests and stuff
+		elseif def.paramtype2 == 'facedir' then
+			local playerpos = placer:getpos()
+			local dir = {x = pos.x - playerpos.x, y = pos.y - playerpos.y, z = pos.z - playerpos.z}
+			newnode.param2 = minetest.dir_to_facedir(dir)
+			minetest.log("action", "facedir: " .. newnode.param2)
+		end
+
+		-- Add node and update
+		minetest.env:add_node(pos, newnode)
+
+		-- Set metadata owner
+		if def.metadata_name ~= "" then
+			minetest.env:get_meta(pos):set_owner(placer:get_player_name())
+		end
+
+		-- Run script hook
+		local _, callback
+		for _, callback in ipairs(minetest.registered_on_placenodes) do
+			callback(pos, newnode, placer)
+		end
+
+		itemstack:take_item()
+	end
+	return itemstack
+end
+
+function minetest.item_place_object(itemstack, placer, pointed_thing)
+	local pos = minetest.get_pointed_thing_position(pointed_thing, true)
+	if pos ~= nil then
+		local item = itemstack:take_item()
+		minetest.env:add_item(pos, item)
+	end
+	return itemstack
+end
+
+function minetest.item_place(itemstack, placer, pointed_thing)
+	if itemstack:get_definition().type == "node" then
+		return minetest.item_place_node(itemstack, placer, pointed_thing)
+	else
+		return minetest.item_place_object(itemstack, placer, pointed_thing)
+	end
+end
+
+function minetest.item_drop(itemstack, dropper, pos)
+	minetest.env:add_item(pos, itemstack)
+	return ""
+end
+
+function minetest.item_eat(hp_change, replace_with_item)
+	return function(itemstack, user, pointed_thing)  -- closure
+		if itemstack:take_item() ~= nil then
+			user:set_hp(user:get_hp() + hp_change)
+			itemstack:add_item(replace_with_item) -- note: replace_with_item is optional
+		end
+		return itemstack
+	end
+end
+
+function minetest.node_punch(pos, node, puncher)
+	-- Run script hook
+	local _, callback
+	for _, callback in ipairs(minetest.registered_on_punchnodes) do
+		callback(pos, node, puncher)
+	end
+
+end
+
+function minetest.node_dig(pos, node, digger)
+	minetest.debug("node_dig")
+
+	local def = ItemStack({name=node.name}):get_definition()
+	if not def.diggable then
+		minetest.debug("not diggable")
+		minetest.log("info", digger:get_player_name() .. " tried to dig "
+			.. node.name .. " which is not diggable "
+			.. minetest.pos_to_string(pos))
+		return
+	end
+
+	local meta = minetest.env:get_meta(pos)
+	if meta ~= nil and not meta:get_allow_removal() then
+		minetest.debug("dig prevented by metadata")
+		minetest.log("info", digger:get_player_name() .. " tried to dig "
+			.. node.name .. ", but removal is disabled by metadata "
+			.. minetest.pos_to_string(pos))
+		return
+	end
+
+	minetest.log('action', digger:get_player_name() .. " digs "
+		.. node.name .. " at " .. minetest.pos_to_string(pos))
+
+	if not minetest.setting_getbool("creative_mode") then
+		local wielded = digger:get_wielded_item()
+		local drops = minetest.get_node_drops(node.name, wielded:get_name())
+
+		-- Wear out tool
+		tp = wielded:get_tool_capabilities()
+		dp = minetest.get_dig_params(def.groups, tp)
+		wielded:add_wear(dp.wear)
+		digger:set_wielded_item(wielded)
+
+		-- Add dropped items
+		local _, dropped_item
+		for _, dropped_item in ipairs(drops) do
+			digger:get_inventory():add_item("main", dropped_item)
+		end
+	end
+
+	-- Remove node and update
+	minetest.env:remove_node(pos)
+
+	-- Run script hook
+	local _, callback
+	for _, callback in ipairs(minetest.registered_on_dignodes) do
+		callback(pos, node, digger)
+	end
+end
+
+--
+-- Item definition defaults
+--
+
+minetest.nodedef_default = {
+	-- Item properties
+	type="node",
+	-- name intentionally not defined here
+	description = "",
+	groups = {},
+	inventory_image = "",
+	wield_image = "",
+	wield_scale = {x=1,y=1,z=1},
+	stack_max = 99,
+	usable = false,
+	liquids_pointable = false,
+	tool_capabilities = nil,
+
+	-- Interaction callbacks
+	on_place = minetest.item_place,
+	on_drop = minetest.item_drop,
+	on_use = nil,
+
+	on_punch = minetest.node_punch,
+	on_dig = minetest.node_dig,
+
+	-- Node properties
+	drawtype = "normal",
+	visual_scale = 1.0,
+	tile_images = {""},
+	special_materials = {
+		{image="", backface_culling=true},
+		{image="", backface_culling=true},
+	},
+	alpha = 255,
+	post_effect_color = {a=0, r=0, g=0, b=0},
+	paramtype = "none",
+	paramtype2 = "none",
+	is_ground_content = false,
+	sunlight_propagates = false,
+	walkable = true,
+	pointable = true,
+	diggable = true,
+	climbable = false,
+	buildable_to = false,
+	metadata_name = "",
+	liquidtype = "none",
+	liquid_alternative_flowing = "",
+	liquid_alternative_source = "",
+	liquid_viscosity = 0,
+	light_source = 0,
+	damage_per_second = 0,
+	selection_box = {type="regular"},
+	legacy_facedir_simple = false,
+	legacy_wallmounted = false,
+}
+
+minetest.craftitemdef_default = {
+	type="craft",
+	-- name intentionally not defined here
+	description = "",
+	groups = {},
+	inventory_image = "",
+	wield_image = "",
+	wield_scale = {x=1,y=1,z=1},
+	stack_max = 99,
+	liquids_pointable = false,
+	tool_capabilities = nil,
+
+	-- Interaction callbacks
+	on_place = minetest.item_place,
+	on_drop = minetest.item_drop,
+	on_use = nil,
+}
+
+minetest.tooldef_default = {
+	type="tool",
+	-- name intentionally not defined here
+	description = "",
+	groups = {},
+	inventory_image = "",
+	wield_image = "",
+	wield_scale = {x=1,y=1,z=1},
+	stack_max = 1,
+	liquids_pointable = false,
+	tool_capabilities = nil,
+
+	-- Interaction callbacks
+	on_place = minetest.item_place,
+	on_drop = minetest.item_drop,
+	on_use = nil,
+}
+
+minetest.noneitemdef_default = {  -- This is used for the hand and unknown items
+	type="none",
+	-- name intentionally not defined here
+	description = "",
+	groups = {},
+	inventory_image = "",
+	wield_image = "",
+	wield_scale = {x=1,y=1,z=1},
+	stack_max = 99,
+	liquids_pointable = false,
+	tool_capabilities = nil,
+
+	-- Interaction callbacks
+	on_place = nil,
+	on_drop = nil,
+	on_use = nil,
+}
+
+--
+-- Make raw registration functions inaccessible to anyone except builtin.lua
+--
+
+local register_item_raw = minetest.register_item_raw
+minetest.register_item_raw = nil
+
+local register_alias_raw = minetest.register_alias_raw
+minetest.register_item_raw = nil
+
+--
+-- Item / entity / ABM registration functions
+--
+
+minetest.registered_abms = {}
+minetest.registered_entities = {}
+minetest.registered_items = {}
+minetest.registered_nodes = {}
+minetest.registered_craftitems = {}
+minetest.registered_tools = {}
+minetest.registered_aliases = {}
+
+-- For tables that are indexed by item name:
+-- If table[X] does not exist, default to table[minetest.registered_aliases[X]]
+local function set_alias_metatable(table)
+	setmetatable(table, {
+		__index = function(name)
+			return rawget(table, minetest.registered_aliases[name])
+		end
+	})
+end
+set_alias_metatable(minetest.registered_items)
+set_alias_metatable(minetest.registered_nodes)
+set_alias_metatable(minetest.registered_craftitems)
+set_alias_metatable(minetest.registered_tools)
+
+-- These item names may not be used because they would interfere
+-- with legacy itemstrings
+local forbidden_item_names = {
+	MaterialItem = true,
+	MaterialItem2 = true,
+	MaterialItem3 = true,
+	NodeItem = true,
+	node = true,
+	CraftItem = true,
+	craft = true,
+	MBOItem = true,
+	ToolItem = true,
+	tool = true,
+}
+
+local function check_modname_prefix(name)
+	if name:sub(1,1) == ":" then
+		-- Escape the modname prefix enforcement mechanism
+		return name:sub(2)
+	else
+		-- Modname prefix enforcement
+		local expected_prefix = minetest.get_current_modname() .. ":"
+		if name:sub(1, #expected_prefix) ~= expected_prefix then
+			error("Name " .. name .. " does not follow naming conventions: " ..
+				"\"modname:\" or \":\" prefix required")
+		end
+		local subname = name:sub(#expected_prefix+1)
+		if subname:find("[^abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]") then
+			error("Name " .. name .. " does not follow naming conventions: " ..
+				"contains unallowed characters")
+		end
+		return name
+	end
+end
+
+function minetest.register_abm(spec)
+	-- Add to minetest.registered_abms
+	minetest.registered_abms[#minetest.registered_abms+1] = spec
+end
+
+function minetest.register_entity(name, prototype)
+	-- Check name
+	if name == nil then
+		error("Unable to register entity: Name is nil")
+	end
+	name = check_modname_prefix(tostring(name))
+
+	prototype.name = name
+	prototype.__index = prototype  -- so that it can be used as a metatable
+
+	-- Add to minetest.registered_entities
+	minetest.registered_entities[name] = prototype
+end
+
+function minetest.register_item(name, itemdef)
+	-- Check name
+	if name == nil then
+		error("Unable to register item: Name is nil")
+	end
+	name = check_modname_prefix(tostring(name))
+	if forbidden_item_names[name] then
+		error("Unable to register item: Name is forbidden: " .. name)
+	end
+	itemdef.name = name
+
+	-- Apply defaults and add to registered_* table
+	if itemdef.type == "node" then
+		setmetatable(itemdef, {__index = minetest.nodedef_default})
+		minetest.registered_nodes[itemdef.name] = itemdef
+	elseif itemdef.type == "craft" then
+		setmetatable(itemdef, {__index = minetest.craftitemdef_default})
+		minetest.registered_craftitems[itemdef.name] = itemdef
+	elseif itemdef.type == "tool" then
+		setmetatable(itemdef, {__index = minetest.tooldef_default})
+		minetest.registered_tools[itemdef.name] = itemdef
+	elseif itemdef.type == "none" then
+		setmetatable(itemdef, {__index = minetest.noneitemdef_default})
+	else
+		error("Unable to register item: Type is invalid: " .. dump(itemdef))
+	end
+
+	-- Flowing liquid uses param2
+	if itemdef.type == "node" and itemdef.liquidtype == "flowing" then
+		itemdef.paramtype2 = "flowingliquid"
+	end
+
+	-- BEGIN Legacy stuff
+	if itemdef.cookresult_itemstring ~= nil and itemdef.cookresult_itemstring ~= "" then
+		minetest.register_craft({
+			type="cooking",
+			output=itemdef.cookresult_itemstring,
+			recipe=itemdef.name,
+			cooktime=itemdef.furnace_cooktime
+		})
+	end
+	if itemdef.furnace_burntime ~= nil and itemdef.furnace_burntime >= 0 then
+		minetest.register_craft({
+			type="fuel",
+			recipe=itemdef.name,
+			burntime=itemdef.furnace_burntime
+		})
+	end
+	-- END Legacy stuff
+
+	-- Disable all further modifications
+	getmetatable(itemdef).__newindex = {}
+
+	--minetest.log("Registering item: " .. itemdef.name)
+	minetest.registered_items[itemdef.name] = itemdef
+	minetest.registered_aliases[itemdef.name] = nil
+	register_item_raw(itemdef)
+end
+
+function minetest.register_node(name, nodedef)
+	nodedef.type = "node"
+	minetest.register_item(name, nodedef)
+end
+
+function minetest.register_craftitem(name, craftitemdef)
+	craftitemdef.type = "craft"
+
+	-- BEGIN Legacy stuff
+	if craftitemdef.inventory_image == nil and craftitemdef.image ~= nil then
+		craftitemdef.inventory_image = craftitemdef.image
+	end
+	-- END Legacy stuff
+
+	minetest.register_item(name, craftitemdef)
+end
+
+function minetest.register_tool(name, tooldef)
+	tooldef.type = "tool"
+	tooldef.stack_max = 1
+
+	-- BEGIN Legacy stuff
+	if tooldef.inventory_image == nil and tooldef.image ~= nil then
+		tooldef.inventory_image = tooldef.image
+	end
+	if tooldef.tool_capabilities == nil and
+	   (tooldef.full_punch_interval ~= nil or
+	    tooldef.basetime ~= nil or
+	    tooldef.dt_weight ~= nil or
+	    tooldef.dt_crackiness ~= nil or
+	    tooldef.dt_crumbliness ~= nil or
+	    tooldef.dt_cuttability ~= nil or
+	    tooldef.basedurability ~= nil or
+	    tooldef.dd_weight ~= nil or
+	    tooldef.dd_crackiness ~= nil or
+	    tooldef.dd_crumbliness ~= nil or
+	    tooldef.dd_cuttability ~= nil) then
+		tooldef.tool_capabilities = {
+			full_punch_interval = tooldef.full_punch_interval,
+			basetime = tooldef.basetime,
+			dt_weight = tooldef.dt_weight,
+			dt_crackiness = tooldef.dt_crackiness,
+			dt_crumbliness = tooldef.dt_crumbliness,
+			dt_cuttability = tooldef.dt_cuttability,
+			basedurability = tooldef.basedurability,
+			dd_weight = tooldef.dd_weight,
+			dd_crackiness = tooldef.dd_crackiness,
+			dd_crumbliness = tooldef.dd_crumbliness,
+			dd_cuttability = tooldef.dd_cuttability,
+		}
+	end
+	-- END Legacy stuff
+
+	minetest.register_item(name, tooldef)
+end
+
+function minetest.register_alias(name, convert_to)
+	if forbidden_item_names[name] then
+		error("Unable to register alias: Name is forbidden: " .. name)
+	end
+	if minetest.registered_items[name] ~= nil then
+		minetest.log("WARNING: Not registering alias, item with same name" ..
+			" is already defined: " .. name .. " -> " .. convert_to)
+	else
+		--minetest.log("Registering alias: " .. name .. " -> " .. convert_to)
+		minetest.registered_aliases[name] = convert_to
+		register_alias_raw(name, convert_to)
+	end
+end
+
+-- Alias the forbidden item names to "" so they can't be
+-- created via itemstrings (e.g. /give)
+local name
+for name in pairs(forbidden_item_names) do
+	minetest.registered_aliases[name] = ""
+	register_alias_raw(name, "")
+end
+
+
+-- Deprecated:
+-- Aliases for minetest.register_alias (how ironic...)
+--minetest.alias_node = minetest.register_alias
+--minetest.alias_tool = minetest.register_alias
+--minetest.alias_craftitem = minetest.register_alias
+
+--
+-- Built-in node definitions. Also defined in C.
+--
+
+minetest.register_item(":unknown", {
+	type = "none",
+	description = "Unknown Item",
+	inventory_image = "unknown_item.png",
+	on_place = minetest.item_place,
+	on_drop = minetest.item_drop,
+})
+
+minetest.register_node(":air", {
+	description = "Air (you hacker you!)",
+	inventory_image = "unknown_block.png",
+	wield_image = "unknown_block.png",
+	drawtype = "airlike",
+	paramtype = "light",
+	sunlight_propagates = true,
+	walkable = false,
+	pointable = false,
+	diggable = false,
+	buildable_to = true,
+	air_equivalent = true,
+})
+
+minetest.register_node(":ignore", {
+	description = "Ignore (you hacker you!)",
+	inventory_image = "unknown_block.png",
+	wield_image = "unknown_block.png",
+	drawtype = "airlike",
+	paramtype = "none",
+	sunlight_propagates = false,
+	walkable = false,
+	pointable = false,
+	diggable = false,
+	buildable_to = true, -- A way to remove accidentally placed ignores
+	air_equivalent = true,
+})
+
+-- The hand (bare definition)
+minetest.register_item(":", {
+	type = "none",
+})
+
+--
+-- Default material types
+--
+function digprop_err()
+	minetest.log("info", debug.traceback())
+	minetest.log("info", "WARNING: The minetest.digprop_* functions are obsolete and need to be replaced by item groups.")
+end
+
+minetest.digprop_constanttime = digprop_err
+minetest.digprop_stonelike = digprop_err
+minetest.digprop_dirtlike = digprop_err
+minetest.digprop_gravellike = digprop_err
+minetest.digprop_woodlike = digprop_err
+minetest.digprop_leaveslike = digprop_err
+minetest.digprop_glasslike = digprop_err
+
+--
+-- Creative inventory
+--
+
+minetest.creative_inventory = {}
+
+minetest.add_to_creative_inventory = function(itemstring)
+	table.insert(minetest.creative_inventory, itemstring)
+end
+
+--
+-- Callback registration
+--
+
+local function make_registration()
+	local t = {}
+	local registerfunc = function(func) table.insert(t, func) end
+	return t, registerfunc
+end
+
+minetest.registered_on_chat_messages, minetest.register_on_chat_message = make_registration()
+minetest.registered_globalsteps, minetest.register_globalstep = make_registration()
+minetest.registered_on_placenodes, minetest.register_on_placenode = make_registration()
+minetest.registered_on_dignodes, minetest.register_on_dignode = make_registration()
+minetest.registered_on_punchnodes, minetest.register_on_punchnode = make_registration()
+minetest.registered_on_generateds, minetest.register_on_generated = make_registration()
+minetest.registered_on_newplayers, minetest.register_on_newplayer = make_registration()
+minetest.registered_on_dieplayers, minetest.register_on_dieplayer = make_registration()
+minetest.registered_on_respawnplayers, minetest.register_on_respawnplayer = make_registration()
+
+--
+-- Set random seed
+--
+
+math.randomseed(os.time())
+
+-- END

cmake/Modules/FindGettextLib.cmake

@@ -59,7 +59,7 @@ ENDIF()
 IF(GETTEXT_FOUND)
 	SET(GETTEXT_PO_PATH ${CMAKE_SOURCE_DIR}/po)
 	SET(GETTEXT_MO_BUILD_PATH ${CMAKE_BINARY_DIR}/locale/<locale>/LC_MESSAGES)
-	SET(GETTEXT_MO_DEST_PATH ${DATADIR}/../locale/<locale>/LC_MESSAGES)
+	SET(GETTEXT_MO_DEST_PATH ${LOCALEDIR}/<locale>/LC_MESSAGES)
 	FILE(GLOB GETTEXT_AVAILABLE_LOCALES RELATIVE ${GETTEXT_PO_PATH} "${GETTEXT_PO_PATH}/*")
 	LIST(REMOVE_ITEM GETTEXT_AVAILABLE_LOCALES minetest.pot)
 	MACRO(SET_MO_PATHS _buildvar _destvar _locale)

cmake/Modules/FindVorbis.cmake

@@ -0,0 +1,46 @@
+# - Find vorbis
+# Find the native vorbis includes and libraries
+#
+#  VORBIS_INCLUDE_DIR - where to find vorbis.h, etc.
+#  OGG_INCLUDE_DIR    - where to find ogg/ogg.h, etc.
+#  VORBIS_LIBRARIES   - List of libraries when using vorbis(file).
+#  VORBIS_FOUND       - True if vorbis found.
+
+if(NOT GP2XWIZ)
+    if(VORBIS_INCLUDE_DIR)
+        # Already in cache, be silent
+        set(VORBIS_FIND_QUIETLY TRUE)
+    endif(VORBIS_INCLUDE_DIR)
+    find_path(OGG_INCLUDE_DIR ogg/ogg.h)
+    find_path(VORBIS_INCLUDE_DIR vorbis/vorbisfile.h)
+    # MSVC built ogg/vorbis may be named ogg_static and vorbis_static
+    find_library(OGG_LIBRARY NAMES ogg ogg_static)
+    find_library(VORBIS_LIBRARY NAMES vorbis vorbis_static)
+    find_library(VORBISFILE_LIBRARY NAMES vorbisfile vorbisfile_static)
+    # Handle the QUIETLY and REQUIRED arguments and set VORBIS_FOUND
+    # to TRUE if all listed variables are TRUE.
+    include(FindPackageHandleStandardArgs)
+    find_package_handle_standard_args(VORBIS DEFAULT_MSG
+        OGG_INCLUDE_DIR VORBIS_INCLUDE_DIR
+        OGG_LIBRARY VORBIS_LIBRARY VORBISFILE_LIBRARY)
+else(NOT GP2XWIZ)
+    find_path(VORBIS_INCLUDE_DIR tremor/ivorbisfile.h)
+    find_library(VORBIS_LIBRARY NAMES vorbis_dec)
+    find_package_handle_standard_args(VORBIS DEFAULT_MSG
+        VORBIS_INCLUDE_DIR VORBIS_LIBRARY)
+endif(NOT GP2XWIZ)
+    
+if(VORBIS_FOUND)
+  if(NOT GP2XWIZ)
+     set(VORBIS_LIBRARIES ${VORBISFILE_LIBRARY} ${VORBIS_LIBRARY}
+           ${OGG_LIBRARY})
+  else(NOT GP2XWIZ)
+     set(VORBIS_LIBRARIES ${VORBIS_LIBRARY})
+  endif(NOT GP2XWIZ)
+else(VORBIS_FOUND)
+  set(VORBIS_LIBRARIES)
+endif(VORBIS_FOUND)
+
+mark_as_advanced(OGG_INCLUDE_DIR VORBIS_INCLUDE_DIR)
+mark_as_advanced(OGG_LIBRARY VORBIS_LIBRARY VORBISFILE_LIBRARY)
+

data/builtin.lua

@@ -1,349 +0,0 @@
---
--- This file contains built-in stuff in Minetest implemented in Lua.
---
--- It is always loaded and executed after registration of the C API,
--- before loading and running any mods.
---
-
-function basic_dump2(o)
-	if type(o) == "number" then
-		return tostring(o)
-	elseif type(o) == "string" then
-		return string.format("%q", o)
-	elseif type(o) == "boolean" then
-		return tostring(o)
-	elseif type(o) == "function" then
-		return "<function>"
-	elseif type(o) == "userdata" then
-		return "<userdata>"
-	elseif type(o) == "nil" then
-		return "nil"
-	else
-		error("cannot dump a " .. type(o))
-		return nil
-	end
-end
-
-function dump2(o, name, dumped)
-	name = name or "_"
-	dumped = dumped or {}
-	io.write(name, " = ")
-	if type(o) == "number" or type(o) == "string" or type(o) == "boolean"
-			or type(o) == "function" or type(o) == "nil"
-			or type(o) == "userdata" then
-		io.write(basic_dump2(o), "\n")
-	elseif type(o) == "table" then
-		if dumped[o] then
-			io.write(dumped[o], "\n")
-		else
-			dumped[o] = name
-			io.write("{}\n") -- new table
-			for k,v in pairs(o) do
-				local fieldname = string.format("%s[%s]", name, basic_dump2(k))
-				dump2(v, fieldname, dumped)
-			end
-		end
-	else
-		error("cannot dump a " .. type(o))
-		return nil
-	end
-end
-
-function dump(o, dumped)
-	dumped = dumped or {}
-	if type(o) == "number" then
-		return tostring(o)
-	elseif type(o) == "string" then
-		return string.format("%q", o)
-	elseif type(o) == "table" then
-		if dumped[o] then
-			return "<circular reference>"
-		end
-		dumped[o] = true
-		local t = {}
-		for k,v in pairs(o) do
-			t[#t+1] = "" .. k .. " = " .. dump(v, dumped)
-		end
-		return "{" .. table.concat(t, ", ") .. "}"
-	elseif type(o) == "boolean" then
-		return tostring(o)
-	elseif type(o) == "function" then
-		return "<function>"
-	elseif type(o) == "userdata" then
-		return "<userdata>"
-	elseif type(o) == "nil" then
-		return "nil"
-	else
-		error("cannot dump a " .. type(o))
-		return nil
-	end
-end
-
---
--- Built-in node definitions. Also defined in C.
---
-
-minetest.register_nodedef_defaults({
-	-- name intentionally not defined here
-	drawtype = "normal",
-	visual_scale = 1.0,
-	tile_images = {"unknown_block.png"},
-	inventory_image = "unknown_block.png",
-	special_materials = {
-		{image="", backface_culling=true},
-		{image="", backface_culling=true},
-	},
-	alpha = 255,
-	post_effect_color = {a=0, r=0, g=0, b=0},
-	paramtype = "none",
-	is_ground_content = false,
-	light_propagates = false,
-	sunlight_propagates = false,
-	walkable = true,
-	pointable = true,
-	diggable = true,
-	climbable = false,
-	buildable_to = false,
-	wall_mounted = false,
-	often_contains_mineral = false,
-	dug_item = "",
-	extra_dug_item = "",
-	extra_dug_item_rarity = 2,
-	metadata_name = "",
-	liquidtype = "none",
-	liquid_alternative_flowing = "",
-	liquid_alternative_source = "",
-	liquid_viscosity = 0,
-	light_source = 0,
-	damage_per_second = 0,
-	selection_box = {type="regular"},
-	material = {
-		diggablity = "normal",
-		weight = 0,
-		crackiness = 0,
-		crumbliness = 0,
-		cuttability = 0,
-		flammability = 0,
-	},
-	cookresult_item = "", -- Cannot be cooked
-	furnace_cooktime = 3.0,
-	furnace_burntime = -1, -- Cannot be used as fuel
-})
-
-minetest.register_node("air", {
-	drawtype = "airlike",
-	paramtype = "light",
-	light_propagates = true,
-	sunlight_propagates = true,
-	walkable = false,
-	pointable = false,
-	diggable = false,
-	buildable_to = true,
-	air_equivalent = true,
-})
-
-minetest.register_node("ignore", {
-	drawtype = "airlike",
-	paramtype = "none",
-	light_propagates = false,
-	sunlight_propagates = false,
-	walkable = false,
-	pointable = false,
-	diggable = false,
-	buildable_to = true, -- A way to remove accidentally placed ignores
-	air_equivalent = true,
-})
-
---
--- stackstring manipulation functions
--- example stackstring: 'CraftItem "apple" 4'
--- example item: {type="CraftItem", name="apple"}
--- example item: {type="ToolItem", name="SteelPick", wear="23272"}
---
-
-function stackstring_take_item(stackstring)
-	if stackstring == nil then
-		return '', nil
-	end
-	local stacktype = nil
-	stacktype = string.match(stackstring,
-			'([%a%d]+Item[%a%d]*)')
-	if stacktype == "NodeItem" or stacktype == "CraftItem" then
-		local itemtype = nil
-		local itemname = nil
-		local itemcount = nil
-		itemtype, itemname, itemcount = string.match(stackstring,
-				'([%a%d]+Item[%a%d]*) "([^"]*)" (%d+)')
-		itemcount = tonumber(itemcount)
-		if itemcount == 0 then
-			return '', nil
-		elseif itemcount == 1 then
-			return '', {type=itemtype, name=itemname}
-		else
-			return itemtype.." \""..itemname.."\" "..(itemcount-1),
-					{type=itemtype, name=itemname}
-		end
-	elseif stacktype == "ToolItem" then
-		local itemtype = nil
-		local itemname = nil
-		local itemwear = nil
-		itemtype, itemname, itemwear = string.match(stackstring,
-				'([%a%d]+Item[%a%d]*) "([^"]*)" (%d+)')
-		itemwear = tonumber(itemwear)
-		return '', {type=itemtype, name=itemname, wear=itemwear}
-	end
-end
-
-function stackstring_put_item(stackstring, item)
-	if item == nil then
-		return stackstring, false
-	end
-	stackstring = stackstring or ''
-	local stacktype = nil
-	stacktype = string.match(stackstring,
-			'([%a%d]+Item[%a%d]*)')
-	stacktype = stacktype or ''
-	if stacktype ~= '' and stacktype ~= item.type then
-		return stackstring, false
-	end
-	if item.type == "NodeItem" or item.type == "CraftItem" then
-		local itemtype = nil
-		local itemname = nil
-		local itemcount = nil
-		itemtype, itemname, itemcount = string.match(stackstring,
-				'([%a%d]+Item[%a%d]*) "([^"]*)" (%d+)')
-		itemtype = itemtype or item.type
-		itemname = itemname or item.name
-		if itemcount == nil then
-			itemcount = 0
-		end
-		itemcount = itemcount + 1
-		return itemtype.." \""..itemname.."\" "..itemcount, true
-	elseif item.type == "ToolItem" then
-		if stacktype ~= nil then
-			return stackstring, false
-		end
-		local itemtype = nil
-		local itemname = nil
-		local itemwear = nil
-		itemtype, itemname, itemwear = string.match(stackstring,
-				'([%a%d]+Item[%a%d]*) "([^"]*)" (%d+)')
-		itemwear = tonumber(itemwear)
-		return itemtype.." \""..itemname.."\" "..itemwear, true
-	end
-	return stackstring, false
-end
-
-function stackstring_put_stackstring(stackstring, src)
-	while src ~= '' do
-		--print("src="..dump(src))
-		src, item = stackstring_take_item(src)
-		--print("src="..dump(src).." item="..dump(item))
-		local success
-		stackstring, success = stackstring_put_item(stackstring, item)
-		if not success then
-			return stackstring, false
-		end
-	end
-	return stackstring, true
-end
-
-function test_stackstring()
-	local stack
-	local item
-	local success
-
-	stack, item = stackstring_take_item('NodeItem "TNT" 3')
-	assert(stack == 'NodeItem "TNT" 2')
-	assert(item.type == 'NodeItem')
-	assert(item.name == 'TNT')
-
-	stack, item = stackstring_take_item('CraftItem "with spaces" 2')
-	assert(stack == 'CraftItem "with spaces" 1')
-	assert(item.type == 'CraftItem')
-	assert(item.name == 'with spaces')
-
-	stack, item = stackstring_take_item('CraftItem "with spaces" 1')
-	assert(stack == '')
-	assert(item.type == 'CraftItem')
-	assert(item.name == 'with spaces')
-
-	stack, item = stackstring_take_item('CraftItem "s8df2kj3" 0')
-	assert(stack == '')
-	assert(item == nil)
-
-	stack, item = stackstring_take_item('ToolItem "With Spaces" 32487')
-	assert(stack == '')
-	assert(item.type == 'ToolItem')
-	assert(item.name == 'With Spaces')
-	assert(item.wear == 32487)
-
-	stack, success = stackstring_put_item('NodeItem "With Spaces" 40',
-			{type='NodeItem', name='With Spaces'})
-	assert(stack == 'NodeItem "With Spaces" 41')
-	assert(success == true)
-
-	stack, success = stackstring_put_item('CraftItem "With Spaces" 40',
-			{type='CraftItem', name='With Spaces'})
-	assert(stack == 'CraftItem "With Spaces" 41')
-	assert(success == true)
-
-	stack, success = stackstring_put_item('ToolItem "With Spaces" 32487',
-			{type='ToolItem', name='With Spaces'})
-	assert(stack == 'ToolItem "With Spaces" 32487')
-	assert(success == false)
-
-	stack, success = stackstring_put_item('NodeItem "With Spaces" 40',
-			{type='ToolItem', name='With Spaces'})
-	assert(stack == 'NodeItem "With Spaces" 40')
-	assert(success == false)
-	
-	assert(stackstring_put_stackstring('NodeItem "With Spaces" 2',
-			'NodeItem "With Spaces" 1') == 'NodeItem "With Spaces" 3')
-end
-test_stackstring()
-
---
--- craftitem helpers
---
-
-minetest.craftitem_place_item = function(item, placer, pos)
-	--print("craftitem_place_item")
-	--print("item: " .. dump(item))
-	--print("placer: " .. dump(placer))
-	--print("pos: " .. dump(pos))
-	minetest.env:add_item(pos, 'CraftItem "' .. item .. '" 1')
-	return true
-end
-
-minetest.craftitem_eat = function(hp_change)
-	return function(item, user, pointed_thing)  -- closure
-		--print("craftitem_eat(" .. hp_change .. ")")
-		--print("item: " .. dump(item))
-		--print("user: " .. dump(user))
-		--print("pointed_thing: " .. dump(pointed_thing))
-		user:set_hp(user:get_hp() + hp_change)
-		return true
-	end
-end
-
---
--- Callback registration
---
-
-function make_registration()
-	local t = {}
-	local registerfunc = function(func) table.insert(t, func) end
-	return t, registerfunc
-end
-
-minetest.registered_on_chat_messages, minetest.register_on_chat_message = make_registration()
-minetest.registered_globalsteps, minetest.register_globalstep = make_registration()
-minetest.registered_on_placenodes, minetest.register_on_placenode = make_registration()
-minetest.registered_on_dignodes, minetest.register_on_dignode = make_registration()
-minetest.registered_on_punchnodes, minetest.register_on_punchnode = make_registration()
-minetest.registered_on_generateds, minetest.register_on_generated = make_registration()
-minetest.registered_on_newplayers, minetest.register_on_newplayer = make_registration()
-minetest.registered_on_respawnplayers, minetest.register_on_respawnplayer = make_registration()
-
--- END

data/mods/bucket/init.lua

@@ -1,73 +0,0 @@
-minetest.register_craft({
-	output = 'CraftItem "bucket" 1',
-	recipe = {
-		{'CraftItem "steel_ingot"', '', 'CraftItem "steel_ingot"'},
-		{'', 'CraftItem "steel_ingot"', ''},
-	}
-})
-
-minetest.register_craftitem("bucket", {
-	image = "bucket.png",
-	stack_max = 1,
-	liquids_pointable = true,
-	on_place_on_ground = minetest.craftitem_place_item,
-	on_use = function(item, player, pointed_thing)
-		if pointed_thing.type == "node" then
-			n = minetest.env:get_node(pointed_thing.under)
-			if n.name == "water_source" then
-				minetest.env:add_node(pointed_thing.under, {name="air"})
-				player:add_to_inventory_later('CraftItem "bucket_water" 1')
-				return true
-			elseif n.name == "lava_source" then
-				minetest.env:add_node(pointed_thing.under, {name="air"})
-				player:add_to_inventory_later('CraftItem "bucket_lava" 1')
-				return true
-			end
-		end
-		return false
-	end,
-})
-
-minetest.register_craftitem("bucket_water", {
-	image = "bucket_water.png",
-	stack_max = 1,
-	liquids_pointable = true,
-	on_place_on_ground = minetest.craftitem_place_item,
-	on_use = function(item, player, pointed_thing)
-		if pointed_thing.type == "node" then
-			n = minetest.env:get_node(pointed_thing.under)
-			if n.name == "water_source" then
-				-- unchanged
-			elseif n.name == "water_flowing" or n.name == "lava_source" or n.name == "lava_flowing" then
-				minetest.env:add_node(pointed_thing.under, {name="water_source"})
-			else
-				minetest.env:add_node(pointed_thing.above, {name="water_source"})
-			end
-			player:add_to_inventory_later('CraftItem "bucket" 1')
-			return true
-		end
-		return false
-	end,
-})
-
-minetest.register_craftitem("bucket_lava", {
-	image = "bucket_lava.png",
-	stack_max = 1,
-	liquids_pointable = true,
-	on_place_on_ground = minetest.craftitem_place_item,
-	on_use = function(item, player, pointed_thing)
-		if pointed_thing.type == "node" then
-			n = minetest.env:get_node(pointed_thing.under)
-			if n.name == "lava_source" then
-				-- unchanged
-			elseif n.name == "water_source" or n.name == "water_flowing" or n.name == "lava_flowing" then
-				minetest.env:add_node(pointed_thing.under, {name="lava_source"})
-			else
-				minetest.env:add_node(pointed_thing.above, {name="lava_source"})
-			end
-			player:add_to_inventory_later('CraftItem "bucket" 1')
-			return true
-		end
-		return false
-	end,
-})

data/mods/experimental/init.lua

@@ -1,398 +0,0 @@
---
--- Experimental things
---
-
--- An example furnace-thing implemented in Lua
-
-minetest.register_node("luafurnace", {
-	tile_images = {"lava.png", "furnace_side.png", "furnace_side.png",
-		"furnace_side.png", "furnace_side.png", "furnace_front.png"},
-	--inventory_image = "furnace_front.png",
-	inventory_image = inventorycube("furnace_front.png"),
-	paramtype = "facedir_simple",
-	metadata_name = "generic",
-	material = digprop_stonelike(3.0),
-})
-
-minetest.register_on_placenode(function(pos, newnode, placer)
-	if newnode.name == "luafurnace" then
-		print("get_meta");
-		local meta = minetest.env:get_meta(pos)
-		print("inventory_set_list");
-		meta:inventory_set_list("fuel", {""})
-		print("inventory_set_list");
-		meta:inventory_set_list("src", {""})
-		print("inventory_set_list");
-		meta:inventory_set_list("dst", {"","","",""})
-		print("set_inventory_draw_spec");
-		meta:set_inventory_draw_spec(
-			"invsize[8,9;]"
-			.."list[current_name;fuel;2,3;1,1;]"
-			.."list[current_name;src;2,1;1,1;]"
-			.."list[current_name;dst;5,1;2,2;]"
-			.."list[current_player;main;0,5;8,4;]"
-		)
-		
-		local total_cooked = 0;
-		print("set_string")
-		meta:set_string("total_cooked", total_cooked)
-		print("set_infotext");
-		meta:set_infotext("Lua Furnace: total cooked: "..total_cooked)
-	end
-end)
-
-minetest.register_abm({
-	nodenames = {"luafurnace"},
-	interval = 1.0,
-	chance = 1,
-	action = function(pos, node, active_object_count, active_object_count_wider)
-		local meta = minetest.env:get_meta(pos)
-		local fuellist = meta:inventory_get_list("fuel")
-		local srclist = meta:inventory_get_list("src")
-		local dstlist = meta:inventory_get_list("dst")
-		if fuellist == nil or srclist == nil or dstlist == nil then
-			return
-		end
-		_, srcitem = stackstring_take_item(srclist[1])
-		_, fuelitem = stackstring_take_item(fuellist[1])
-		if not srcitem or not fuelitem then return end
-		if fuelitem.type == "NodeItem" then
-			local prop = minetest.registered_nodes[fuelitem.name]
-			if prop == nil then return end
-			if prop.furnace_burntime < 0 then return end
-		else
-			return
-		end
-		local resultstack = nil
-		if srcitem.type == "NodeItem" then
-			local prop = minetest.registered_nodes[srcitem.name]
-			if prop == nil then return end
-			if prop.cookresult_item == "" then return end
-			resultstack = prop.cookresult_item
-		else
-			return
-		end
-
-		if resultstack == nil then
-			return
-		end
-
-		dstlist[1], success = stackstring_put_stackstring(dstlist[1], resultstack)
-		if not success then
-			return
-		end
-
-		fuellist[1], _ = stackstring_take_item(fuellist[1])
-		srclist[1], _ = stackstring_take_item(srclist[1])
-
-		meta:inventory_set_list("fuel", fuellist)
-		meta:inventory_set_list("src", srclist)
-		meta:inventory_set_list("dst", dstlist)
-
-		local total_cooked = meta:get_string("total_cooked")
-		total_cooked = tonumber(total_cooked) + 1
-		meta:set_string("total_cooked", total_cooked)
-		meta:set_infotext("Lua Furnace: total cooked: "..total_cooked)
-	end,
-})
-
-minetest.register_craft({
-	output = 'NodeItem "luafurnace" 1',
-	recipe = {
-		{'NodeItem "cobble"', 'NodeItem "cobble"', 'NodeItem "cobble"'},
-		{'NodeItem "cobble"', 'NodeItem "cobble"', 'NodeItem "cobble"'},
-		{'NodeItem "cobble"', 'NodeItem "cobble"', 'NodeItem "cobble"'},
-	}
-})
-
---
--- Random stuff
---
-
---[[
-minetest.register_tool("horribletool", {
-	image = "lava.png",
-	basetime = 2.0
-	dt_weight = 0.2
-	dt_crackiness = 0.2
-	dt_crumbliness = 0.2
-	dt_cuttability = 0.2
-	basedurability = 50
-	dd_weight = -5
-	dd_crackiness = -5
-	dd_crumbliness = -5
-	dd_cuttability = -5
-})
---]]
-
-minetest.register_craft({
-	output = 'NodeItem "somenode" 4',
-	recipe = {
-		{'CraftItem "Stick" 1'},
-	}
-})
-
-minetest.register_node("somenode", {
-	tile_images = {"lava.png", "mese.png", "stone.png", "grass.png", "cobble.png", "tree_top.png"},
-	inventory_image = "treeprop.png",
-	material = {
-		diggability = "normal",
-		weight = 0,
-		crackiness = 0,
-		crumbliness = 0,
-		cuttability = 0,
-		flammability = 0
-	},
-	metadata_name = "chest",
-})
-
---
--- TNT (not functional)
---
-
-minetest.register_craft({
-	output = 'NodeItem "TNT" 4',
-	recipe = {
-		{'NodeItem "wood" 1'},
-		{'CraftItem "lump_of_coal" 1'},
-		{'NodeItem "wood" 1'}
-	}
-})
-
-minetest.register_node("TNT", {
-	tile_images = {"tnt_top.png", "tnt_bottom.png", "tnt_side.png", "tnt_side.png", "tnt_side.png", "tnt_side.png"},
-	inventory_image = "tnt_side.png",
-	dug_item = '', -- Get nothing
-	material = {
-		diggability = "not",
-	},
-})
-
-local TNT = {
-	-- Static definition
-	physical = true, -- Collides with things
-	-- weight = 5,
-	collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
-	visual = "cube",
-	textures = {"tnt_top.png","tnt_bottom.png","tnt_side.png","tnt_side.png","tnt_side.png","tnt_side.png"},
-	-- Initial value for our timer
-	timer = 0,
-	-- Number of punches required to defuse
-	health = 1,
-	blinktimer = 0,
-	blinkstatus = true,
-}
-
--- Called when a TNT object is created
-function TNT:on_activate(staticdata)
-	print("TNT:on_activate()")
-	self.object:setvelocity({x=0, y=4, z=0})
-	self.object:setacceleration({x=0, y=-10, z=0})
-	self.object:settexturemod("^[brighten")
-end
-
--- Called periodically
-function TNT:on_step(dtime)
-	--print("TNT:on_step()")
-	self.timer = self.timer + dtime
-	self.blinktimer = self.blinktimer + dtime
-	if self.blinktimer > 0.5 then
-		self.blinktimer = self.blinktimer - 0.5
-		if self.blinkstatus then
-			self.object:settexturemod("")
-		else
-			self.object:settexturemod("^[brighten")
-		end
-		self.blinkstatus = not self.blinkstatus
-	end
-end
-
--- Called when object is punched
-function TNT:on_punch(hitter)
-	print("TNT:on_punch()")
-	self.health = self.health - 1
-	if self.health <= 0 then
-		self.object:remove()
-		hitter:add_to_inventory("NodeItem TNT 1")
-		hitter:set_hp(hitter:get_hp() - 1)
-	end
-end
-
--- Called when object is right-clicked
-function TNT:on_rightclick(clicker)
-	--pos = self.object:getpos()
-	--pos = {x=pos.x, y=pos.y+0.1, z=pos.z}
-	--self.object:moveto(pos, false)
-end
-
-print("TNT dump: "..dump(TNT))
-
-print("Registering TNT");
-minetest.register_entity("TNT", TNT)
-
---
--- A test entity for testing animated and yaw-modulated sprites
---
-
-minetest.register_entity("testentity", {
-	-- Static definition
-	physical = true, -- Collides with things
-	-- weight = 5,
-	collisionbox = {-0.7,-1.35,-0.7, 0.7,1.0,0.7},
-	--collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
-	visual = "sprite",
-	visual_size = {x=2, y=3},
-	textures = {"dungeon_master.png^[makealpha:128,0,0^[makealpha:128,128,0"},
-	spritediv = {x=6, y=5},
-	initial_sprite_basepos = {x=0, y=0},
-
-	on_activate = function(self, staticdata)
-		print("testentity.on_activate")
-		self.object:setsprite({x=0,y=0}, 1, 0, true)
-		--self.object:setsprite({x=0,y=0}, 4, 0.3, true)
-
-		-- Set gravity
-		self.object:setacceleration({x=0, y=-10, z=0})
-		-- Jump a bit upwards
-		self.object:setvelocity({x=0, y=10, z=0})
-	end,
-
-	on_punch = function(self, hitter)
-		self.object:remove()
-		hitter:add_to_inventory('CraftItem testobject1 1')
-	end,
-})
-
---
--- More random stuff
---
-
-minetest.register_on_respawnplayer(function(player)
-	print("on_respawnplayer")
-	-- player:setpos({x=0, y=30, z=0})
-	-- return true
-end)
-
-minetest.register_on_generated(function(minp, maxp)
-	--print("on_generated: minp="..dump(minp).." maxp="..dump(maxp))
-	--cp = {x=(minp.x+maxp.x)/2, y=(minp.y+maxp.y)/2, z=(minp.z+maxp.z)/2}
-	--minetest.env:add_node(cp, {name="sand"})
-end)
-
--- Example setting get
-print("setting max_users = " .. dump(minetest.setting_get("max_users")))
-print("setting asdf = " .. dump(minetest.setting_get("asdf")))
-
-minetest.register_on_chat_message(function(name, message)
-	--[[print("on_chat_message: name="..dump(name).." message="..dump(message))
-	local cmd = "/testcommand"
-	if message:sub(0, #cmd) == cmd then
-		print(cmd.." invoked")
-		return true
-	end
-	local cmd = "/help"
-	if message:sub(0, #cmd) == cmd then
-		print("script-overridden help command")
-		minetest.chat_send_all("script-overridden help command")
-		return true
-	end]]
-end)
-
--- Grow papyrus on TNT every 10 seconds
---[[minetest.register_abm({
-	nodenames = {"TNT"},
-	interval = 10.0,
-	chance = 1,
-	action = function(pos, node, active_object_count, active_object_count_wider)
-		print("TNT ABM action")
-		pos.y = pos.y + 1
-		minetest.env:add_node(pos, {name="papyrus"})
-	end,
-})]]
-
--- Replace texts of alls signs with "foo" every 10 seconds
---[[minetest.register_abm({
-	nodenames = {"sign_wall"},
-	interval = 10.0,
-	chance = 1,
-	action = function(pos, node, active_object_count, active_object_count_wider)
-		print("ABM: Sign text changed")
-		local meta = minetest.env:get_meta(pos)
-		meta:set_text("foo")
-	end,
-})]]
-
---[[local ncpos = nil
-local ncq = 1
-local ncstuff = {
-    {2, 1, 0, 3}, {3, 0, 1, 2}, {4, -1, 0, 1}, {5, -1, 0, 1}, {6, 0, -1, 0},
-    {7, 0, -1, 0}, {8, 1, 0, 3}, {9, 1, 0, 3}, {10, 1, 0, 3}, {11, 0, 1, 2},
-    {12, 0, 1, 2}, {13, 0, 1, 2}, {14, -1, 0, 1}, {15, -1, 0, 1}, {16, -1, 0, 1},
-    {17, -1, 0, 1}, {18, 0, -1, 0}, {19, 0, -1, 0}, {20, 0, -1, 0}, {21, 0, -1, 0},
-    {22, 1, 0, 3}, {23, 1, 0, 3}, {24, 1, 0, 3}, {25, 1, 0, 3}, {10, 0, 1, 2}
-}
-local ncold = {}
-local nctime = nil
-
-minetest.register_abm({
-    nodenames = {"dirt_with_grass"},
-    interval = 100000.0,
-    chance = 1,
-    action = function(pos, node, active_object_count, active_object_count_wider)
-        if ncpos ~= nil then
-            return
-        end
-       
-        if pos.x % 16 ~= 8 or pos.z % 16 ~= 8 then
-            return
-        end
-       
-        pos.y = pos.y + 1
-        n = minetest.env:get_node(pos)
-        print(dump(n))
-        if n.name ~= "air" then
-            return
-        end
-
-        pos.y = pos.y + 2
-        ncpos = pos
-        nctime = os.clock()
-        minetest.env:add_node(ncpos, {name="nyancat"})
-    end
-})
-
-minetest.register_abm({
-    nodenames = {"nyancat"},
-    interval = 1.0,
-    chance = 1,
-    action = function(pos, node, active_object_count, active_object_count_wider)
-        if ncpos == nil then
-            return
-        end
-        if pos.x == ncpos.x and pos.y == ncpos.y and pos.z == ncpos.z then
-            clock = os.clock()
-            if clock - nctime < 0.1 then
-                return
-            end
-            nctime = clock
-           
-            s0 = ncstuff[ncq]
-            ncq = s0[1]
-            s1 = ncstuff[ncq]
-            p0 = pos
-            p1 = {x = p0.x + s0[2], y = p0.y, z = p0.z + s0[3]}
-            p2 = {x = p1.x + s1[2], y = p1.y, z = p1.z + s1[3]}
-            table.insert(ncold, 1, p0)
-            while #ncold >= 10 do
-                minetest.env:add_node(ncold[#ncold], {name="air"})
-                table.remove(ncold, #ncold)
-            end
-            minetest.env:add_node(p0, {name="nyancat_rainbow"})
-            minetest.env:add_node(p1, {name="nyancat", param1=s0[4]})
-            minetest.env:add_node(p2, {name="air"})
-            ncpos = p1
-        end
-    end,
-})--]]
-
-

data/mods/give_initial_stuff/init.lua

@@ -1,12 +0,0 @@
-minetest.register_on_newplayer(function(player)
-	print("on_newplayer")
-	if minetest.setting_getbool("give_initial_stuff") then
-		print("giving give_initial_stuff to player")
-		player:add_to_inventory('ToolItem "SteelPick" 0')
-		player:add_to_inventory('NodeItem "torch" 99')
-		player:add_to_inventory('ToolItem "SteelAxe" 0')
-		player:add_to_inventory('ToolItem "SteelShovel" 0')
-		player:add_to_inventory('NodeItem "cobble" 99')
-	end
-end)
-

doc/lua_api.txt

@@ -0,0 +1,798 @@
+Minetest Lua Modding API Reference 0.4.dev
+==========================================
+More information at http://c55.me/minetest/
+
+Introduction
+-------------
+Content and functionality can be added to Minetest 0.4 by using Lua
+scripting in run-time loaded mods.
+
+A mod is a self-contained bunch of scripts, textures and other related
+things that is loaded by and interfaces with Minetest.
+
+Mods are contained and ran solely on the server side. Definitions and media
+files are automatically transferred to the client.
+
+If you see a deficiency in the API, feel free to attempt to add the
+functionality in the engine and API. You can send such improvements as
+source code patches to <celeron55@gmail.com>.
+
+Programming in Lua
+-------------------
+If you have any difficulty in understanding this, please read:
+  http://www.lua.org/pil/
+
+Startup
+--------
+Mods are loaded during server startup from the mod load paths by running
+the init.lua scripts.
+
+Mod load path
+-------------
+Generic:
+  $path_share/games/gameid/mods/
+  $path_share/mods/gameid/
+  $path_user/games/gameid/mods/
+  $path_user/mods/gameid/ <-- User-installed mods
+  $worldpath/worldmods/
+
+In a run-in-place version (eg. the distributed windows version):
+  minetest-0.4.x/games/gameid/mods/
+  minetest-0.4.x/mods/gameid/ <-- User-installed mods
+  minetest-0.4.x/worlds/worldname/worldmods/
+
+On an installed version on linux:
+  /usr/share/minetest/games/gameid/mods/
+  ~/.minetest/mods/gameid/ <-- User-installed mods
+  ~/.minetest/worlds/worldname/worldmods
+
+Mod directory structure
+------------------------
+mods
+|-- modname
+|   |-- depends.txt
+|   |-- init.lua
+|   |-- textures
+|   |   |-- modname_stuff.png
+|   |   `-- modname_something_else.png
+|   |-- sounds
+|   |-- media
+|   `-- <custom data>
+`-- another
+
+modname:
+  The location of this directory can be fetched by using
+  minetest.get_modpath(modname)
+
+depends.txt:
+  List of mods that have to be loaded before loading this mod.
+  A single line contains a single modname.
+
+init.lua:
+  The main Lua script. Running this script should register everything it
+  wants to register. Subsequent execution depends on minetest calling the
+  registered callbacks.
+
+  minetest.setting_get(name) and minetest.setting_getbool(name) can be used
+  to read custom or existing settings at load time, if necessary.
+
+textures, sounds, media:
+  Media files (textures, sounds, whatever) that will be transferred to the
+  client and will be available for use by the mod.
+
+Naming convention for registered textual names
+----------------------------------------------
+Registered names should generally be in this format:
+  "modname:<whatever>" (<whatever> can have characters a-zA-Z0-9_)
+
+This is to prevent conflicting names from corrupting maps and is
+enforced by the mod loader.
+
+Example: mod "experimental", ideal item/node/entity name "tnt":
+         -> the name should be "experimental:tnt".
+
+Enforcement can be overridden by prefixing the name with ":". This can
+be used for overriding the registrations of some other mod.
+
+Example: Any mod can redefine experimental:tnt by using the name
+         ":experimental:tnt" when registering it.
+(also that mod is required to have "experimental" as a dependency)
+
+The ":" prefix can also be used for maintaining backwards compatibility.
+
+Aliases
+-------
+Aliases can be added by using minetest.register_alias(name, convert_to)
+
+This will make Minetest to convert things called name to things called
+convert_to.
+
+This can be used for maintaining backwards compatibility.
+
+This can be also used for setting quick access names for things, eg. if
+you have an item called epiclylongmodname:stuff, you could do
+  minetest.register_alias("stuff", "epiclylongmodname:stuff")
+and be able to use "/giveme stuff".
+
+Textures
+--------
+Mods should generally prefix their textures with modname_, eg. given
+the mod name "foomod", a texture could be called
+  "foomod_foothing.png"
+
+Textures are referred to by their complete name, or alternatively by
+stripping out the file extension:
+  eg. foomod_foothing.png
+  eg. foomod_foothing
+
+Sounds
+-------
+Only OGG files are supported.
+
+For positional playing of sounds, only single-channel (mono) files are
+supported. Otherwise OpenAL will play them non-positionally.
+
+Mods should generally prefix their sounds with modname_, eg. given
+the mod name "foomod", a sound could be called
+  "foomod_foosound.ogg"
+
+Sounds are referred to by their name with a dot, a single digit and the
+file extension stripped out.  When a sound is played, the actual sound file
+is chosen randomly from the matching sounds.
+
+When playing the sound "foomod_foosound", the sound is chosen randomly
+from the available ones of the following files:
+  foomod_foosound.ogg
+  foomod_foosound.0.ogg
+  foomod_foosound.1.ogg
+  ...
+  foomod_foosound.9.ogg
+
+Examples of sound parameter tables:
+-- Play locationless on all clients
+{
+	gain = 1.0, -- default
+}
+-- Play locationless to a player
+{
+	to_player = name,
+	gain = 1.0, -- default
+}
+-- Play in a location
+{
+	pos = {x=1,y=2,z=3},
+	gain = 1.0, -- default
+	max_hear_distance = 32, -- default
+}
+-- Play connected to an object, looped
+{
+    object = <an ObjectRef>,
+	gain = 1.0, -- default
+	max_hear_distance = 32, -- default
+    loop = true, -- only sounds connected to objects can be looped
+}
+
+Representations of simple things
+--------------------------------
+MapNode representation:
+  {name="name", param1=num, param2=num}
+
+MapNodes do not directly have any other data associated with them.
+If you want to access the definition of the node, you access
+  minetest.registered_nodes[node.name]
+
+param1 and param2 are 8 bit and 4 bit integers, respectively. They
+are reserved for certain automated functions. If you don't use these
+functions, you can use them to store arbitrary values.
+
+param1 is reserved for the engine when:
+  paramtype != "none"
+param2 is reserved for the engine when any of these are used:
+  liquidtype == "flowing"
+  drawtype == "flowingliquid"
+  drawtype == "torchlike"
+  drawtype == "signlike"
+
+Position/vector:
+  {x=num, y=num, z=num}
+Currently the API does not provide any helper functions for addition,
+subtraction and whatever; you can define those that you need yourself.
+
+stackstring/itemstring: A stack of items in serialized format.
+eg. 'default:dirt 5'
+eg. 'default:pick_wood 21323'
+eg. 'default:apple'
+
+item: A stack of items in Lua table format.
+eg. {name="default:dirt", count=5, wear=0, metadata=""} 
+    ^ 5 dirt nodes
+eg. {name="default:pick_wood", count=1, wear=21323, metadata=""}
+    ^ a wooden pick about 1/3 weared out
+eg. {name="default:apple", count=1, wear=0, metadata=""}
+    ^ an apple.
+
+Any time an item must be passed to a function, it can be an
+ItemStack (see below), an itemstring or a table in the above format.
+
+SimpleSoundSpec:
+eg. ""
+eg. "default_place_node"
+eg. {}
+eg. {name="default_place_node"}
+eg. {name="default_place_node", gain=1.0}
+
+Items
+------
+Node (register_node):
+  A node from the world
+Tool (register_tool):
+  A tool/weapon that can dig and damage things according to tool_capabilities
+Craftitem (register_craftitem):
+  A miscellaneous item
+
+Groups
+-------
+In a number of places, there is a group table. Groups define the
+properties of a thing (item, node, armor of entity, capabilities of
+tool) in such a way that the engine and other mods can can interact with
+the thing without actually knowing what the thing is.
+
+Usage:
+- Groups are stored in a table, having the group names with keys and the
+  group ratings as values. For example:
+    groups = {crumbly=3, soil=1}
+    ^ Default dirt (soil group actually currently not defined; TODO)
+    groups = {crumbly=2, soil=1, level=2, outerspace=1}
+    ^ A more special dirt-kind of thing
+- Groups always have a rating associated with them. If there is no
+  useful meaning for a rating for an enabled group, it shall be 1.
+- When not defined, the rating of a group defaults to 0. Thus when you
+  read groups, you must interpret nil and 0 as the same value, 0.
+
+Groups of items
+----------------
+Groups of items can define what kind of an item it is (eg. wool).
+
+Groups of nodes
+----------------
+In addition to the general item things, whether a node is diggable and how
+long it takes is defined by using groups.
+
+Groups of entities
+-------------------
+For entities, groups are, as of now, used only for calculating damage.
+
+object.get_armor_groups() -> a group-rating table (eg. {fleshy=3})
+object.set_armor_groups({level=2, fleshy=2, cracky=2})
+
+Groups of tools
+----------------
+Groups in tools define which groups of nodes and entities they are
+effective towards.
+
+Groups in crafting recipes
+---------------------------
+- Not implemented yet. (TODO)
+- Will probably look like this:
+{
+    output = 'food:meat_soup_raw',
+    recipe = {
+        {'group:meat'},
+        {'group:water'},
+        {'group:bowl'},
+    },
+	preserve = {'group:bowl'},
+}
+
+Special groups
+---------------
+- immortal: Disables the group damage system for an entity
+- level: Can be used to give an additional sense of progression in the game.
+  - A larger level will cause eg. a weapon of a lower level make much less
+    damage, and get weared out much faster, or not be able to get drops
+	from destroyed nodes.
+  - 0 is something that is directly accessible at the start of gameplay
+- dig_immediate: (player can always pick up node without tool wear)
+  - 2: node is removed without tool wear after 0.5 seconds or so
+       (rail, sign)
+  - 3: node is removed without tool wear immediately (torch)
+
+Known damage and digging time defining groups
+----------------------------------------------
+- crumbly: dirt, sand
+- cracky: tough but crackable stuff like stone.
+- snappy: something that can be cut using fine tools; eg. leaves, small
+          plants, wire, sheets of metal
+- choppy: something that can be cut using force; eg. trees, wooden planks
+- fleshy: Living things like animals and the player. This could imply
+          some blood effects when hitting.
+- explody: Especially prone to explosions
+- oddly_breakable_by_hand:
+   Can be added to nodes that shouldn't logically be breakable by the
+   hand but are. Somewhat similar to dig_immediate, but times are more
+   like {[1]=3.50,[2]=2.00,[3]=0.70} and this does not override the
+   speed of a tool if the tool can dig at a larger speed than this
+   suggests for the hand.
+
+Examples of custom groups
+--------------------------
+Item groups are often used for defining, well, //groups of items//.
+- meat: any meat-kind of a thing (rating might define the size or healing
+  ability or be irrelevant - it is not defined as of yet)
+- eatable: anything that can be eaten. Rating might define HP gain in half
+  hearts.
+- flammable: can be set on fire. Rating might define the intensity of the
+  fire, affecting eg. the speed of the spreading of an open fire.
+- wool: any wool (any origin, any color)
+- metal: any metal
+- weapon: any weapon
+- heavy: anything considerably heavy
+
+Digging time calculation specifics
+-----------------------------------
+Groups such as **crumbly**, **cracky** and **snappy** are used for this
+purpose. Rating is 1, 2 or 3. A higher rating for such a group implies
+faster digging time.
+
+Also, the **level** group is used.
+
+Tools define their properties by a list of parameters for groups. They
+cannot dig other groups; thus it is important to use a standard bunch of
+groups to enable interaction with tools.
+
+**Example definition of the digging capabilities of a tool:**
+tool_capabilities = {
+	full_punch_interval=1.5,
+	max_drop_level=1,
+	groupcaps={
+		crumbly={maxwear=0.01, maxlevel=2, times={[1]=0.80, [2]=0.60, [3]=0.40}}
+	}
+}
+
+**Tools define:**
+  * Full punch interval Maximum drop level For an arbitrary list of groups:
+  * Maximum level (usually 0, 1, 2 or 3) Maximum wear (0...1) Digging times
+
+**Full punch interval**: When used as a weapon, the tool will do full
+damage if this time is spent between punches. If eg. half the time is
+spent, the tool will do half damage.
+
+**Maximum drop level** suggests the maximum level of node, when dug with
+the tool, that will drop it's useful item. (eg. iron ore to drop a lump of
+iron).
+
+**Maximum level** tells what is the maximum level of a node of this group
+that the tool will be able to dig.
+
+**Maximum wear** determines how much the tool wears out when it is used for
+digging a node, of this group, of the maximum level. For lower leveled
+tools, the wear is divided by //4// to the exponent //level difference//.
+This means for a maximum wear of 0.1, a level difference 1 will result in
+wear=0.1/4=0.025, and a level difference of 2 will result in
+wear=0.1/(4*4)=0.00625.
+
+**Digging times** is basically a list of digging times for different
+ratings of the group. It also determines the damage done to entities, based
+on their "armor groups".
+  * For example, as a lua table, ''times={2=2.00, 3=0.70}''. This would
+  * result the tool to be able to dig nodes that have a rating of 2 or 3
+  * for this group, and unable to dig the rating 1, which is the toughest.
+  * Unless there is a matching group that enables digging otherwise.  For
+  * entities, damage equals the amount of nodes dug in the time spent
+  * between hits, with a maximum of ''full_punch_interval''.
+
+Entity damage mechanism
+------------------------
+Client predicts damage based on damage groups. Because of this, it is able to
+give an immediate response when an entity is damaged or dies; the response is
+pre-defined somehow (eg. by defining a sprite animation) (not implemented;
+TODO).
+
+The group **immortal** will completely disable normal damage.
+
+Entities can define a special armor group, which is **punch_operable**. This
+group will disable the regular damage mechanism for players punching it by hand
+or a non-tool item.
+
+On the Lua side, every punch calls ''entity:on_punch(puncher,
+time_from_last_punch, tool_capabilities, direction)''. This should never be
+called directly, because damage is usually not handled by the entity itself.
+  * ''puncher'' is the object performing the punch. Can be nil. Should never be
+    accessed unless absolutely required.
+  * ''time_from_last_punch'' is time from last punch (by puncher) or nil.
+  * ''tool_capabilities'' can be nil.
+  * ''direction'' is a unit vector, pointing from the source of the punch to
+    the punched object.
+
+To punch an entity/object in Lua, call ''object:punch(puncher, time_from_last_punch, tool_capabilities, direction)''.
+  * Return value is tool wear.
+  * Parameters are equal to the above callback.
+  * If ''direction'' is nil and ''puncher'' is not nil, ''direction'' will be
+    automatically filled in based on the location of ''puncher''.
+
+Helper functions
+-----------------
+dump2(obj, name="_", dumped={})
+^ Return object serialized as a string, handles reference loops
+dump(obj, dumped={})
+^ Return object serialized as a string
+
+minetest namespace reference
+-----------------------------
+minetest.get_current_modname() -> string
+minetest.get_modpath(modname) -> eg. "/home/user/.minetest/usermods/modname"
+^ Useful for loading additional .lua modules or static data from mod
+minetest.get_worldpath(modname) -> eg. "/home/user/.minetest/world"
+^ Useful for storing custom data
+
+minetest.register_entity(name, prototype table)
+minetest.register_abm(abm definition)
+minetest.register_node(name, node definition)
+minetest.register_tool(name, item definition)
+minetest.register_craftitem(name, item definition)
+minetest.register_alias(name, convert_to)
+minetest.register_craft(recipe)
+
+minetest.register_globalstep(func(dtime))
+minetest.register_on_placenode(func(pos, newnode, placer))
+minetest.register_on_dignode(func(pos, oldnode, digger))
+minetest.register_on_punchnode(func(pos, node, puncher))
+minetest.register_on_generated(func(minp, maxp))
+minetest.register_on_newplayer(func(ObjectRef))
+minetest.register_on_dieplayer(func(ObjectRef))
+minetest.register_on_respawnplayer(func(ObjectRef))
+^ return true in func to disable regular player placement
+^ currently called _before_ repositioning of player occurs
+minetest.register_on_chat_message(func(name, message))
+
+minetest.add_to_creative_inventory(itemstring)
+minetest.setting_get(name) -> string or nil
+minetest.setting_getbool(name) -> boolean value or nil
+
+minetest.chat_send_all(text)
+minetest.chat_send_player(name, text)
+minetest.get_player_privs(name) -> set of privs
+minetest.get_inventory(location) -> InvRef
+^ location = eg. {type="player", name="celeron55"}
+                 {type="node", pos={x=, y=, z=}}
+
+minetest.sound_play(spec, parameters) -> handle
+^ spec = SimpleSoundSpec
+^ parameters = sound parameter table
+minetest.sound_stop(handle)
+
+minetest.debug(line)
+^ Goes to dstream
+minetest.log(line)
+minetest.log(loglevel, line)
+^ loglevel one of "error", "action", "info", "verbose"
+
+Global objects:
+minetest.env - environment reference
+
+Global tables:
+minetest.registered_items
+^ List of registered items, indexed by name
+minetest.registered_nodes
+^ List of registered node definitions, indexed by name
+minetest.registered_craftitems
+^ List of registered craft item definitions, indexed by name
+minetest.registered_tools
+^ List of registered tool definitions, indexed by name
+minetest.registered_entities
+^ List of registered entity prototypes, indexed by name
+minetest.object_refs
+^ List of object references, indexed by active object id
+minetest.luaentities
+^ List of lua entities, indexed by active object id
+
+Deprecated but defined for backwards compatibility:
+minetest.digprop_constanttime(time)
+minetest.digprop_stonelike(toughness)
+minetest.digprop_dirtlike(toughness)
+minetest.digprop_gravellike(toughness)
+minetest.digprop_woodlike(toughness)
+minetest.digprop_leaveslike(toughness)
+minetest.digprop_glasslike(toughness)
+
+Class reference
+----------------
+EnvRef: basically ServerEnvironment and ServerMap combined.
+methods:
+- add_node(pos, node)
+- remove_node(pos)
+- get_node(pos)
+  ^ Returns {name="ignore", ...} for unloaded area
+- get_node_or_nil(pos)
+  ^ Returns nil for unloaded area
+- get_node_light(pos, timeofday) -> 0...15 or nil
+  ^ timeofday: nil = current time, 0 = night, 0.5 = day
+- add_entity(pos, name): Returns ObjectRef or nil if failed
+- add_item(pos, itemstring)
+- add_rat(pos)
+- add_firefly(pos)
+- get_meta(pos) -- Get a NodeMetaRef at that position
+- get_player_by_name(name) -- Get an ObjectRef to a player
+- get_objects_inside_radius(pos, radius)
+- set_timeofday(val): val: 0...1; 0 = midnight, 0.5 = midday
+- get_timeofday()
+
+NodeMetaRef (this stuff is subject to change in a future version)
+methods:
+- get_type()
+- allows_text_input()
+- set_text(text) -- eg. set the text of a sign
+- get_text()
+- get_owner()
+- set_owner(string)
+Generic node metadata specific:
+- set_infotext(infotext)
+- get_inventory() -> InvRef
+- set_inventory_draw_spec(string)
+- set_allow_text_input(bool)
+- set_allow_removal(bool)
+- set_enforce_owner(bool)
+- is_inventory_modified()
+- reset_inventory_modified()
+- is_text_modified()
+- reset_text_modified()
+- set_string(name, value)
+- get_string(name)
+
+ObjectRef: Moving things in the game are generally these
+(basically reference to a C++ ServerActiveObject)
+methods:
+- remove(): remove object (after returning from Lua)
+- getpos() -> {x=num, y=num, z=num}
+- setpos(pos); pos={x=num, y=num, z=num}
+- moveto(pos, continuous=false): interpolated move
+- punch(puncher, time_from_last_punch, tool_capabilities, direction)
+  ^ puncher = an another ObjectRef,
+  ^ time_from_last_punch = time since last punch action of the puncher
+- right_click(clicker); clicker = an another ObjectRef
+- get_hp(): returns number of hitpoints (2 * number of hearts)
+- set_hp(hp): set number of hitpoints (2 * number of hearts)
+- get_inventory() -> InvRef
+- get_wield_list(): returns the name of the inventory list the wielded item is in
+- get_wield_index(): returns the index of the wielded item
+- get_wielded_item() -> ItemStack
+- set_wielded_item(item): replaces the wielded item, returns true if successful
+LuaEntitySAO-only: (no-op for other objects)
+- setvelocity({x=num, y=num, z=num})
+- getvelocity() -> {x=num, y=num, z=num}
+- setacceleration({x=num, y=num, z=num})
+- getacceleration() -> {x=num, y=num, z=num}
+- setyaw(radians)
+- getyaw() -> radians
+- settexturemod(mod)
+- setsprite(p={x=0,y=0}, num_frames=1, framelength=0.2,
+-           select_horiz_by_yawpitch=false)
+- ^ Select sprite from spritesheet with optional animation and DM-style
+-   texture selection based on yaw relative to camera
+- set_armor_groups({group1=rating, group2=rating, ...})
+- get_entity_name() (DEPRECATED: Will be removed in a future version)
+- get_luaentity()
+Player-only: (no-op for other objects)
+- get_player_name(): will return nil if is not a player
+- get_look_dir(): get camera direction as a unit vector
+- get_look_pitch(): pitch in radians
+- get_look_yaw(): yaw in radians (wraps around pretty randomly as of now)
+
+InvRef: Reference to an inventory
+methods:
+- get_size(listname): get size of a list
+- set_size(listname, size): set size of a list
+- get_stack(listname, i): get a copy of stack index i in list
+- set_stack(listname, i, stack): copy stack to index i in list
+- get_list(listname): return full list
+- set_list(listname, list): set full list (size will not change)
+- add_item(listname, stack): add item somewhere in list, returns leftover ItemStack
+- room_for_item(listname, stack): returns true if the stack of items
+    can be fully added to the list
+- contains_item(listname, stack): returns true if the stack of items
+    can be fully taken from the list
+  remove_item(listname, stack): take as many items as specified from the list,
+    returns the items that were actually removed (as an ItemStack)
+
+ItemStack: A stack of items.
+methods:
+- is_empty(): return true if stack is empty
+- get_name(): returns item name (e.g. "default:stone")
+- get_count(): returns number of items on the stack
+- get_wear(): returns tool wear (0-65535), 0 for non-tools
+- get_metadata(): returns metadata (a string attached to an item stack)
+- clear(): removes all items from the stack, making it empty
+- replace(item): replace the contents of this stack (item can also
+    be an itemstring or table)
+- to_string(): returns the stack in itemstring form
+- to_table(): returns the stack in Lua table form
+- get_stack_max(): returns the maximum size of the stack (depends on the item)
+- get_free_space(): returns get_stack_max() - get_count()
+- is_known(): returns true if the item name refers to a defined item type
+- get_definition(): returns the item definition table
+- get_tool_capabilities(): returns the digging properties of the item,
+  ^ or those of the hand if none are defined for this item type
+- add_wear(amount): increases wear by amount if the item is a tool
+- add_item(item): put some item or stack onto this stack,
+  ^ returns leftover ItemStack
+- item_fits(item): returns true if item or stack can be fully added to this one
+- take_item(n): take (and remove) up to n items from this stack
+  ^ returns taken ItemStack
+  ^ if n is omitted, n=1 is used
+- peek_item(n): copy (don't remove) up to n items from this stack
+  ^ returns copied ItemStack
+  ^ if n is omitted, n=1 is used
+
+Registered entities
+--------------------
+- Functions receive a "luaentity" as self:
+  - It has the member .name, which is the registered name ("mod:thing")
+  - It has the member .object, which is an ObjectRef pointing to the object
+  - The original prototype stuff is visible directly via a metatable
+- Callbacks:
+  - on_activate(self, staticdata)
+    ^ Called when the object is instantiated.
+  - on_step(self, dtime)
+    ^ Called on every server tick (dtime is usually 0.05 seconds)
+  - on_punch(self, puncher, time_from_last_punch, tool_capabilities, dir)
+    ^ Called when somebody punches the object.
+    ^ Note that you probably want to handle most punches using the
+      automatic armor group system.
+    ^ puncher: ObjectRef (can be nil)
+    ^ time_from_last_punch: Meant for disallowing spamming of clicks (can be nil)
+    ^ tool_capabilities: capability table of used tool (can be nil)
+	^ dir: unit vector of direction of punch. Always defined. Points from
+	       the puncher to the punched.
+  - on_rightclick(self, clicker)
+  - get_staticdata(self)
+    ^ Should return a string that will be passed to on_activate when
+      the object is instantiated the next time.
+
+Definition tables
+------------------
+
+Entity definition (register_entity)
+{
+    physical = true,
+    collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
+    visual = "cube"/"sprite",
+    visual_size = {x=1, y=1},
+    textures = {texture,texture,texture,texture,texture,texture},
+    spritediv = {x=1, y=1},
+    initial_sprite_basepos = {x=0, y=0},
+    on_activate = function(self, staticdata),
+    on_step = function(self, dtime),
+    on_punch = function(self, hitter),
+    on_rightclick = function(self, clicker),
+    get_staticdata = function(self),
+    # Also you can define arbitrary member variables here
+    myvariable = whatever,
+}
+
+ABM (ActiveBlockModifier) definition (register_abm)
+{
+    nodenames = {"default:lava_source"},
+    neighbors = {"default:water_source", "default:water_flowing"}, -- (any of these)
+     ^ If left out or empty, any neighbor will do
+    interval = 1.0, -- (operation interval)
+    chance = 1, -- (chance of trigger is 1.0/this)
+    action = func(pos, node, active_object_count, active_object_count_wider),
+}
+
+Item definition (register_node, register_craftitem, register_tool)
+{
+    description = "Steel Axe",
+    groups = {}, -- key=name, value=rating; rating=1..3.
+                    if rating not applicable, use 1.
+                    eg. {wool=1, fluffy=3}
+                        {soil=2, outerspace=1, crumbly=1}
+                        {bendy=2, snappy=1},
+                        {hard=1, metal=1, spikes=1}
+    inventory_image = "default_tool_steelaxe.png",
+    wield_image = "",
+    wield_scale = {x=1,y=1,z=1},
+    stack_max = 99,
+    liquids_pointable = false,
+    tool_capabilities = {
+        full_punch_interval = 1.0,
+        max_drop_level=0,
+        groupcaps={
+            -- For example:
+            fleshy={times={[2]=0.80, [3]=0.40}, maxwear=0.05, maxlevel=1},
+            snappy={times={[2]=0.80, [3]=0.40}, maxwear=0.05, maxlevel=1},
+            choppy={times={[3]=0.90}, maxwear=0.05, maxlevel=0}
+        }
+    }
+    on_drop = func(item, dropper, pos),
+    on_place = func(item, placer, pointed_thing),
+    on_use = func(item, user, pointed_thing),
+}
+
+Node definition (register_node)
+{
+    <all fields allowed in item definitions>,
+
+    drawtype = "normal",
+    visual_scale = 1.0,
+    tile_images = {"default_unknown_block.png"},
+    special_materials = {
+        {image="", backface_culling=true},
+        {image="", backface_culling=true},
+    },
+    alpha = 255,
+    post_effect_color = {a=0, r=0, g=0, b=0},
+    paramtype = "none",
+    paramtype2 = "none",
+    is_ground_content = false,
+    sunlight_propagates = false,
+    walkable = true,
+    pointable = true,
+    diggable = true,
+    climbable = false,
+    buildable_to = false,
+    drop = "",
+    -- alternatively drop = { max_items = ..., items = { ... } }
+    metadata_name = "",
+    liquidtype = "none",
+    liquid_alternative_flowing = "",
+    liquid_alternative_source = "",
+    liquid_viscosity = 0,
+    light_source = 0,
+    damage_per_second = 0,
+    selection_box = {type="regular"},
+    legacy_facedir_simple = false, -- Support maps made in and before January 2012
+    legacy_wallmounted = false, -- Support maps made in and before January 2012
+    sounds = {
+        footstep = <SimpleSoundSpec>,
+        dig = <SimpleSoundSpec>, -- "__group" = group-based sound (default)
+        dug = <SimpleSoundSpec>,
+    },
+}
+
+Recipe: (register_craft)
+{
+    output = 'default:pick_stone',
+    recipe = {
+        {'default:cobble', 'default:cobble', 'default:cobble'},
+        {'', 'default:stick', ''},
+        {'', 'default:stick', ''},
+    },
+    replacements = <optional list of item pairs,
+                    replace one input item with another item on crafting>
+}
+
+Recipe (shapeless):
+{
+    type = "shapeless",
+    output = 'mushrooms:mushroom_stew',
+    recipe = {
+        "mushrooms:bowl",
+        "mushrooms:mushroom_brown",
+        "mushrooms:mushroom_red",
+    },
+    replacements = <optional list of item pairs,
+                    replace one input item with another item on crafting>
+}
+
+Recipe (tool repair):
+{
+    type = "toolrepair",
+    additional_wear = -0.02,
+}
+
+Recipe (cooking):
+{
+    type = "cooking",
+    output = "default:glass",
+    recipe = "default:sand",
+    cooktime = 3,
+}
+
+Recipe (furnace fuel):
+{
+    type = "fuel",
+    recipe = "default:leaves",
+    burntime = 1,
+}
+
+

doc/mapformat.txt

@@ -1,7 +1,462 @@
-I'll try to quickly document the newest block format in here (might contain
-errors). Refer to the mapgen or minetestmapper script for the directory
-structure and file naming. There are two sector namings possible,
-sector/XXXXZZZZ and sector/XXX/ZZZ.
+=================================================
+Minetest World Format used as of 0.4.dev-20120322
+=================================================
+
+This applies to a world format carrying the block serialization version 22
+which is used at least in version 0.4.dev-20120322.
+
+The block serialization version used is 22. It does not fully specify every
+aspect of this format; if compliance with this format is to be checked, it
+needs to be done by detecting if the files and data indeed follows it.
+
+Legacy stuff
+=============
+Data can, in theory, be contained in the flat file directory structure
+described below in Version 17, but it is not officially supported. Also you
+may stumble upon all kinds of oddities in not-so-recent formats.
+
+Files
+======
+Everything is contained in a directory, the name of which is freeform, but
+often serves as the name of the world.
+
+Currently the authentication and ban data is stored on a per-world basis. It
+can be copied over from an old world to a newly created world.
+
+World
+|-- auth.txt ----- Authentication data
+|-- env_meta.txt - Environment metadata
+|-- ipban.txt ---- Banned ips/users
+|-- map_meta.txt - Map metadata
+|-- map.sqlite --- Map data
+|-- players ------ Player directory
+|   |-- player1 -- Player file
+|   '-- Foo ------ Player file
+`-- world.mt ----- World metadata
+
+auth.txt
+---------
+Contains authentication data, player per line.
+  <name>:<password hash>:<privilege1,...>
+Format of password hash is <name><password> SHA1'd, in the base64 encoding.
+
+Example lines:
+- Player "celeron55", no password, privileges "interact" and "shout":
+    celeron55::interact,shout
+- Player "Foo", password "bar", privilege "shout":
+    foo:iEPX+SQWIR3p67lj/0zigSWTKHg:shout
+- Player "bar", no password, no privileges:
+    bar::
+
+env_meta.txt
+-------------
+Simple global environment variables.
+Example content (added indentation):
+  game_time = 73471
+  time_of_day = 19118
+  EnvArgsEnd
+
+ipban.txt
+----------
+Banned IP addresses and usernames.
+Example content (added indentation):
+  123.456.78.9|foo
+  123.456.78.10|bar
+
+map_meta.txt
+-------------
+Simple global map variables.
+Example content (added indentation):
+  seed = 7980462765762429666
+  [end_of_params]
+
+map.sqlite
+-----------
+Map data.
+See Map File Format below.
+
+player1, Foo
+-------------
+Player data.
+Filename can be anything.
+See Player File Format below.
+
+world.mt
+---------
+World metadata.
+Example content (added indentation):
+  gameid = mesetint
+
+Player File Format
+===================
+
+- Should be pretty self-explanatory.
+- Note: position is in nodes * 10
+
+Example content (added indentation):
+  hp = 11
+  name = celeron55
+  pitch = 39.77
+  position = (-5231.97,15,1961.41)
+  version = 1
+  yaw = 101.37
+  PlayerArgsEnd
+  List main 32
+  Item default:torch 13
+  Item default:pick_steel 1 50112
+  Item experimental:tnt
+  Item default:cobble 99
+  Item default:pick_stone 1 13104
+  Item default:shovel_steel 1 51838
+  Item default:dirt 61
+  Item default:rail 78
+  Item default:coal_lump 3
+  Item default:cobble 99
+  Item default:leaves 22
+  Item default:gravel 52
+  Item default:axe_steel 1 2045
+  Item default:cobble 98
+  Item default:sand 61
+  Item default:water_source 94
+  Item default:glass 2
+  Item default:mossycobble
+  Item default:pick_steel 1 64428
+  Item animalmaterials:bone
+  Item default:sword_steel
+  Item default:sapling
+  Item default:sword_stone 1 10647
+  Item default:dirt 99
+  Empty
+  Empty
+  Empty
+  Empty
+  Empty
+  Empty
+  Empty
+  Empty
+  EndInventoryList
+  List craft 9
+  Empty
+  Empty
+  Empty
+  Empty
+  Empty
+  Empty
+  Empty
+  Empty
+  Empty
+  EndInventoryList
+  List craftpreview 1
+  Empty
+  EndInventoryList
+  List craftresult 1
+  Empty
+  EndInventoryList
+  EndInventory
+
+Map File Format
+================
+
+Minetest maps consist of MapBlocks, chunks of 16x16x16 nodes.
+
+In addition to the bulk node data, MapBlocks stored on disk also contain
+other things.
+
+History
+--------
+We need a bit of history in here. Initially Minetest stored maps in a
+format called the "sectors" format. It was a directory/file structure like
+this:
+  sectors2/XXX/ZZZ/YYYY
+For example, the MapBlock at (0,1,-2) was this file:
+  sectors2/000/ffd/0001
+
+Eventually Minetest outgrow this directory structure, as filesystems were
+struggling under the amount of files and directories.
+
+Large servers seriously needed a new format, and thus the base of the
+current format was invented, suggested by celeron55 and implemented by
+JacobF.
+
+SQLite3 was slammed in, and blocks files were directly inserted as blobs
+in a single table, indexed by integer primary keys, oddly mangled from
+coordinates.
+
+Today we know that SQLite3 allows multiple primary keys (which would allow
+storing coordinates separately), but the format has been kept unchanged for
+that part. So, this is where it has come.
+</history>
+
+So here goes
+-------------
+map.sqlite is an sqlite3 database, containg a single table, called
+"blocks". It looks like this:
+
+  CREATE TABLE `blocks` (`pos` INT NOT NULL PRIMARY KEY,`data` BLOB);
+
+The key
+--------
+"pos" is created from the three coordinates of a MapBlock using this
+algorithm, defined here in Python:
+
+  def getBlockAsInteger(p):
+      return int64(p[2]*16777216 + p[1]*4096 + p[0])
+  
+  def int64(u):
+      while u >= 2**63:
+          u -= 2**64
+      while u <= -2**63:
+          u += 2**64
+      return u
+  
+It can be converted the other way by using this code:
+
+  def getIntegerAsBlock(i):
+      x = unsignedToSigned(i % 4096, 2048)
+      i = int((i - x) / 4096)
+      y = unsignedToSigned(i % 4096, 2048)
+      i = int((i - y) / 4096)
+      z = unsignedToSigned(i % 4096, 2048)
+      return x,y,z
+  
+  def unsignedToSigned(i, max_positive):
+      if i < max_positive:
+          return i
+      else:
+          return i - 2*max_positive
+
+The blob
+---------
+The blob is the data that would have otherwise gone into the file.
+
+See below for description.
+
+MapBlock serialization format
+==============================
+NOTE: Byte order is MSB first (big-endian).
+NOTE: Zlib data is in such a format that Python's zlib at least can
+      directly decompress.
+
+u8 version
+- map format version number, this one is version 22
+
+u8 flags
+- Flag bitmasks:
+  - 0x01: is_underground: Should be set to 0 if there will be no light
+    obstructions above the block. If/when sunlight of a block is updated
+    and there is no block above it, this value is checked for determining
+    whether sunlight comes from the top.
+  - 0x02: day_night_differs: Whether the lighting of the block is different
+    on day and night. Only blocks that have this bit set are updated when
+    day transforms to night.
+  - 0x04: lighting_expired: If true, lighting is invalid and should be
+    updated.  If you can't calculate lighting in your generator properly,
+    you could try setting this 1 to everything and setting the uppermost
+    block in every sector as is_underground=0. I am quite sure it doesn't
+    work properly, though.
+  - 0x08: generated: True if the block has been generated. If false, block
+    is mostly filled with CONTENT_IGNORE and is likely to contain eg. parts
+    of trees of neighboring blocks.
+
+u8 content_width
+- Number of bytes in the content (param0) fields of nodes
+- Always 1
+
+u8 params_width
+- Number of bytes used for parameters per node
+- Always 2
+
+zlib-compressed node data:
+- content:
+  u8[4096]: param0 fields
+  u8[4096]: param1 fields
+  u8[4096]: param2 fields
+- The location of a node in each of those arrays is (z*16*16 + y*16 + x).
+
+zlib-compressed node metadata list
+- content:
+  u16 version (=1)
+  u16 count of metadata
+  foreach count:
+    u16 position (p.Z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + p.Y*MAP_BLOCKSIZE + p.X)
+    u16 type_id
+    u16 content_size
+    u8[content_size] (content of metadata)
+
+u16 mapblockobject_count
+- Always 0
+- Should be removed in version 23 (TODO)
+
+u8 static object version:
+- Always 0
+
+u16 static_object_count
+
+foreach static_object_count:
+  u8 type (object type-id)
+  s32 pos_x_nodes * 10000
+  s32 pos_y_nodes * 10000
+  s32 pos_z_nodes * 10000
+  u16 data_size
+  u8[data_size] data
+
+u32 timestamp
+- Timestamp when last saved, as seconds from starting the game.
+- 0xffffffff = invalid/unknown timestamp, nothing should be done with the time
+               difference when loaded
+
+u8 name-id-mapping version
+- Always 0
+
+u16 num_name_id_mappings
+
+foreach num_name_id_mappings
+  u16 id
+  u16 name_len
+  u8[name_len] name
+
+EOF.
+
+Format of nodes
+----------------
+A node is composed of the u8 fields param0, param1 and param2.
+
+The content id of a node is determined as so:
+- If param0 < 0x80,
+    content_id = param0
+- Otherwise
+    content_id = (param0<<4) + (param2>>4)
+
+The purpose of param1 and param2 depend on the definition of the node.
+
+The name-id-mapping
+--------------------
+The mapping maps node content ids to node names.
+
+Node metadata format
+---------------------
+
+1: Generic metadata
+  serialized inventory
+  u32 len
+  u8[len] text
+  u16 len
+  u8[len] owner
+  u16 len
+  u8[len] infotext
+  u16 len
+  u8[len] inventory drawspec
+  u8 allow_text_input (bool)
+  u8 removal_disabled (bool)
+  u8 enforce_owner (bool)
+  u32 num_vars
+  foreach num_vars
+    u16 len
+    u8[len] name
+    u32 len
+    u8[len] value
+
+14: Sign metadata
+  u16 text_len
+  u8[text_len] text
+
+15: Chest metadata
+  serialized inventory
+
+16: Furnace metadata
+  TBD
+
+17: Locked Chest metadata
+  u16 len
+  u8[len] owner
+  serialized inventory
+
+Static objects
+---------------
+Static objects are persistent freely moving objects in the world.
+
+Object types:
+1: Test object
+2: Item
+3: Rat (deprecated)
+4: Oerkki (deprecated)
+5: Firefly (deprecated)
+6: MobV2 (deprecated)
+7: LuaEntity
+
+1: Item:
+  u8 version
+  version 0:
+    u16 len
+    u8[len] itemstring
+
+7: LuaEntity:
+  u8 version
+  version 1:
+    u16 len
+    u8[len] entity name
+    u32 len
+    u8[len] static data
+    s16 hp
+    s32 velocity.x * 10000
+    s32 velocity.y * 10000
+    s32 velocity.z * 10000
+    s32 yaw * 1000
+
+Itemstring format
+------------------
+eg. 'default:dirt 5'
+eg. 'default:pick_wood 21323'
+eg. '"default:apple" 2'
+eg. 'default:apple'
+- The wear value in tools is 0...65535
+- There are also a number of older formats that you might stumble upon:
+eg. 'node "default:dirt" 5'
+eg. 'NodeItem default:dirt 5'
+eg. 'ToolItem WPick 21323'
+
+Inventory serialization format
+-------------------------------
+- The inventory serialization format is line-based
+- The newline character used is "\n"
+- The end condition of a serialized inventory is always "EndInventory\n"
+- All the slots in a list must always be serialized.
+
+Example (format does not include "---"):
+---
+List foo 4
+Item default:sapling
+Item default:sword_stone 1 10647
+Item default:dirt 99
+Empty
+EndInventoryList
+List bar 9
+Empty
+Empty
+Empty
+Empty
+Empty
+Empty
+Empty
+Empty
+Empty
+EndInventoryList
+EndInventory
+---
+
+==============================================
+Minetest World Format used as of 2011-05 or so
+==============================================
+
+Map data serialization format version 17.
+
+0.3.1 does not use this format, but a more recent one. This exists here for
+historical reasons.
+
+Directory structure:
+sectors/XXXXZZZZ or sectors2/XXX/ZZZ
+XXXX, ZZZZ, XXX and ZZZ being the hexadecimal X and Z coordinates.
+Under these, the block files are stored, called YYYY.
 
 There also exists files map_meta.txt and chunk_meta, that are used by the
 generator. If they are not found or invalid, the generator will currently

doc/minetest.6

@@ -0,0 +1,91 @@
+.\" Minetest man page
+.TH minetest 6 "11 March 2012" "" ""
+
+.SH NAME
+minetest \- Multiplayer infinite-world block sandbox
+
+.SH SYNOPSIS
+.B minetest
+[ OPTION ... ]
+
+.SH DESCRIPTION
+.B Minetest
+is one of the first InfiniMiner/Minecraft(/whatever) inspired games (started October 2010), with a goal of taking the survival multiplayer gameplay to a slightly different direction.
+.PP
+The main design philosophy is to keep it technically simple, stable and portable. It will be kept lightweight enough to run on fairly old hardware.
+
+.SH OPTIONS
+.TP
+\-\-address <value>
+Address to connect to
+.TP
+\-\-config <value>
+Load configuration from specified file
+.TP
+\-\-disable\-unittests
+Disable unit tests
+.TP
+\-\-enable\-unittests
+Enable unit tests
+.TP
+\-\-gameid <value>
+Set gameid
+.TP
+\-\-go
+Disable main menu
+.TP
+\-\-help
+Show allowed options
+.TP
+\-\-logfile <value>
+Set logfile path (debug.txt)
+.TP
+\-\-map\-dir <value>
+Same as --world (deprecated)
+.TP
+\-\-name <value>
+Set player name
+.TP
+\-\-password <value>
+Set password
+.TP
+\-\-port <value>
+Set network port (UDP) to use
+.TP
+\-\-random\-input
+Enable random user input, for testing
+.TP
+\-\-server
+Run dedicated server
+.TP
+\-\-speedtests
+Run speed tests
+.TP
+\-\-info
+Print more information to console
+.TP
+\-\-verbose
+Print even more information to console
+.TP
+\-\-trace
+Print enormous amounts of information to console
+.TP
+\-\-world <value>
+Set world path
+
+.SH BUGS
+Please report all bugs to Perttu Ahola <celeron55@gmail.com>.
+
+.SH AUTHOR
+.PP
+Perttu Ahola <celeron55@gmail.com>
+and contributors.
+.PP
+This man page was originally written by
+Juhani Numminen <juhaninumminen0@gmail.com>.
+
+.SH WWW
+http://c55.me/minetest/
+
+.SH "SEE ALSO"
+.BR minetestserver(6)

doc/minetestserver.6

@@ -0,0 +1,70 @@
+.\" Minetestserver man page
+.TH minetestserver 6 "11 March 2012" "" ""
+
+.SH NAME
+minetestserver \- Minetest server
+
+.SH SYNOPSIS
+.B minetestserver
+[ OPTION ... ]
+
+.SH DESCRIPTION
+.B Minetest
+is one of the first InfiniMiner/Minecraft(/whatever) inspired games (started October 2010), with a goal of taking the survival multiplayer gameplay to a slightly different direction.
+.PP
+The main design philosophy is to keep it technically simple, stable and portable. It will be kept lightweight enough to run on fairly old hardware.
+
+.SH OPTIONS
+.TP
+\-\-config <value>
+Load configuration from specified file
+.TP
+\-\-disable\-unittests
+Disable unit tests
+.TP
+\-\-enable\-unittests
+Enable unit tests
+.TP
+\-\-gameid <value>
+Set gameid
+.TP
+\-\-help
+Show allowed options
+.TP
+\-\-logfile <value>
+Set logfile path (debug.txt)
+.TP
+\-\-map\-dir <value>
+Same as --world (deprecated)
+.TP
+\-\-port <value>
+Set network port (UDP) to use
+.TP
+\-\-info
+Print more information to console
+.TP
+\-\-verbose
+Print even more information to console
+.TP
+\-\-trace
+Print enormous amounts of information to console
+.TP
+\-\-world <value>
+Set world path
+
+.SH BUGS
+Please report all bugs to Perttu Ahola <celeron55@gmail.com>.
+
+.SH AUTHOR
+.PP
+Perttu Ahola <celeron55@gmail.com>
+and contributors.
+.PP
+This man page was originally written by
+Juhani Numminen <juhaninumminen0@gmail.com>.
+
+.SH WWW
+http://c55.me/minetest/
+
+.SH "SEE ALSO"
+.BR minetest(6)

games/minimal/game.conf

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+name = Minimal development test
+

games/minimal/mods/bucket/init.lua

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+-- bucket (Minetest 0.4 mod)
+-- A bucket, which can pick up water and lava
+
+minetest.register_alias("bucket", "bucket:bucket_empty")
+minetest.register_alias("bucket_water", "bucket:bucket_water")
+minetest.register_alias("bucket_lava", "bucket:bucket_lava")
+
+minetest.register_craft({
+	output = 'bucket:bucket_empty 1',
+	recipe = {
+		{'default:steel_ingot', '', 'default:steel_ingot'},
+		{'', 'default:steel_ingot', ''},
+	}
+})
+
+bucket = {}
+bucket.liquids = {}
+
+-- Register a new liquid
+--   source = name of the source node
+--   flowing = name of the flowing node
+--   itemname = name of the new bucket item (or nil if liquid is not takeable)
+--   inventory_image = texture of the new bucket item (ignored if itemname == nil)
+-- This function can be called from any mod (that depends on bucket).
+function bucket.register_liquid(source, flowing, itemname, inventory_image)
+	bucket.liquids[source] = {
+		source = source,
+		flowing = flowing,
+		itemname = itemname,
+	}
+	bucket.liquids[flowing] = bucket.liquids[source]
+
+	if itemname ~= nil then
+		minetest.register_craftitem(itemname, {
+			inventory_image = inventory_image,
+			stack_max = 1,
+			liquids_pointable = true,
+			on_use = function(itemstack, user, pointed_thing)
+				-- Must be pointing to node
+				if pointed_thing.type ~= "node" then
+					return
+				end
+				-- Check if pointing to a liquid
+				n = minetest.env:get_node(pointed_thing.under)
+				if bucket.liquids[n.name] == nil then
+					-- Not a liquid
+					minetest.env:add_node(pointed_thing.above, {name=source})
+				elseif n.name ~= source then
+					-- It's a liquid
+					minetest.env:add_node(pointed_thing.under, {name=source})
+				end
+				return {name="bucket:bucket_empty"}
+			end
+		})
+	end
+end
+
+minetest.register_craftitem("bucket:bucket_empty", {
+	inventory_image = "bucket.png",
+	stack_max = 1,
+	liquids_pointable = true,
+	on_use = function(itemstack, user, pointed_thing)
+		-- Must be pointing to node
+		if pointed_thing.type ~= "node" then
+			return
+		end
+		-- Check if pointing to a liquid source
+		n = minetest.env:get_node(pointed_thing.under)
+		liquiddef = bucket.liquids[n.name]
+		if liquiddef ~= nil and liquiddef.source == n.name and liquiddef.itemname ~= nil then
+			minetest.env:add_node(pointed_thing.under, {name="air"})
+			return {name=liquiddef.itemname}
+		end
+	end,
+})
+
+bucket.register_liquid(
+	"default:water_source",
+	"default:water_flowing",
+	"bucket:bucket_water",
+	"bucket_water.png"
+)
+
+bucket.register_liquid(
+	"default:lava_source",
+	"default:lava_flowing",
+	"bucket:bucket_lava",
+	"bucket_lava.png"
+)
+
+minetest.register_craft({
+	type = "fuel",
+	recipe = "default:bucket_lava",
+	burntime = 60,
+})