Rewrite mod, push to 2.0

- Seperated hunger -> https://github.com/BlockMen/hunger
- Added API

13 files changed, 1089 insertions, 928 deletions

diff --git a/API.txt b/API.txt
new file mode 100644
index 0000000..caeaf90
--- /dev/null
+++ b/API.txt
@@ -0,0 +1,33 @@
+function hud.register(name, def)
+	-- name: statbar name (health, air, hunger, armor already used by default)
+	-- def: <HUD item definition> (see below)
+
+hud.change_item(player, name, def)
+	-- player: player object
+	-- name: statbar name (health, air, hunger, armor already used by default)
+	-- def: table containing new values
+		-- currently supported: number, text and offset
+
+hud.remove_item(player, name)
+
+HUD item definition
+{
+	hud_elem_type = "statbar",		-- currently only supported type (same as in lua-api.txt)
+	position = {x=<x>, y=<y>},		-- position of statbar (same as in lua-api.txt)
+	size = {x=24, y=24},			-- statbar texture size (default 24x24), needed to be scaled correctly
+	text = "hud_heart_fg.png",		-- texture name (same as in lua-api.txt)
+	number = 20,				-- number/2 = number of full textures(e.g. hearts)
+	max = 20,				-- used to prevent "overflow" of statbars
+	alignment = {x=-1,y=-1},		-- alignment on screen (same as in lua-api.txt)
+	offset = HUD_HEALTH_OFFSET,
+	background = "hud_heart_bg.png",	-- statbar background texture name
+	autohide_bg = false,			-- hide statbar background textures when number = 0
+	events = {				-- called on events "damage" and "breath_changed" of players
+		 {
+			type = "damage",
+			func = function(player)
+				-- do something here
+			end
+		 }
+	},
+}
diff --git a/LICENSE.txt b/LICENSE.txt
new file mode 100644
index 0000000..4362b49
--- /dev/null
+++ b/LICENSE.txt
@@ -0,0 +1,502 @@
+                  GNU LESSER GENERAL PUBLIC LICENSE
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diff --git a/README.txt b/README.txt
index d2899c5..0b08a3d 100644
--- a/README.txt
+++ b/README.txt
@@ -1,74 +1,47 @@
 Minetest mod "Better HUD"
 =========================
-Version: 1.4.1
+Version: 2.0
 
-License of source code: WTFPL
------------------------------
 (c) Copyright BlockMen (2013-2015)
 
 
+About this mod:
+~~~~~~~~~~~~~~~
+This mod improves the HUD of Minetest and adds (hidden by default) statbars for Hunger and Armor.
+Also it provides an API to add new statbars easily, see API.txt for more informations.
 
-Using the mod:
---------------
-This mod changes the HUD of Minetest. 
-It improves the apperance of the health and breath bar and adds a more fancy hotbar. Furthermore it adds a 
-custom crosshair, an armor bar (only for 3darmor mod) and a hunger bar. It includes also a mechanic for hunger.
+Changes in builtin HUD items:
+- Adds background for Health bar
+- Uses better textures for Hotbar
+- Uses texture for crosshair
+- Positions of builtin statbars can be changed via "hud.conf" file
 
-You can create a "hud.conf" file to customize the positions of health, hunger, armor and breath bar. Take a look at "hud.conf.example" to get more infos.
+This mod gets provided as Modpack aswell, which includes the hunger mod (https://github.com/BlockMen/hunger)
+More information concerning the hunger mechanics can be get there.
 
+This mod supports the 3d_armor mod by stu (https://github.com/stujones11/minetest-3d_armor)
 
-!!IMPORTANT !!:
-Keep in mind if running a server with this mod, that the custom position should be displayed correct on every screen size!!
 
 
-=Hunger=
-========
-This mod adds a hunger mechanic to the game. Player actions like digging, placing and walking causes exhausion,
-that lowers players saturation. Also every 800 seconds you lose 1 saturation point without doing anything.
-If you are hungry (empty hunger bar) you will get damage and die in case you don't eat something.
-
-
-Notice:
--------
-You can disable this by setting "HUD_HUNGER_ENABLE = false" in "hud.conf", or "hud_hunger_enable = false" in minetest.conf.
-In case of conflict hud.conf configuration is dominant.
-
+License:
+~~~~~~~~
+(c) Copyright BlockMen (2013-2015)
 
-Currently supported food:
--------------------------
-- Apples (default)
-- Animalmaterials (mobf modpack)
-- Bread (default)
-- Bushes
-- bushes_classic
-- Creatures
-- Dwarves (beer and such)
-- Docfarming
-- Fishing
-- Farming plus
-- Farming (default and Tenplus1's fork)
-- Food
-- fruit
-- Glooptest
-- JKMod
-- kpgmobs
-- Mobfcooking
-- Mooretrees
-- Mtfoods
-- mushroom
-- mush45
-- Seaplants (sea)
-- Simple mobs
 
-Example: 1 apple fills up the hunger bar by 1 bread, 1 bread (from farming) 2 breads in bar.
+Code:
+Licensed under the GNU LGPL version 2.1 or higher.
+You can redistribute it and/or modify it under 
+the terms of the GNU Lesser General Public License 
+as published by the Free Software Foundation;
 
-Although it show 20 hunger points (10 breads) in hunger bar,
-you can fill it up to 30 points.(5 breads not shown then)
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 
+See LICENSE.txt and http://www.gnu.org/licenses/lgpl-2.1.txt
 
 
-License of textures:
---------------------
+Textures:
 hud_heart_fg.png - celeron55 (CC BY-SA 3.0), modified by BlockMen
 hud_heart_bg.png - celeron55 (CC BY-SA 3.0), modified by BlockMen
 hud_hunger_fg.png - PilzAdam (WTFPL), modified by BlockMen
@@ -78,11 +51,16 @@ hud_air_fg.png - kaeza (WTFPL), modified by BlockMen
 hud_armor_fg.png - Stu (CC BY-SA 3.0), modified by BlockMen
 hud_armor_bg.png - Stu (CC BY-SA 3.0), modified by BlockMen
 
-everything else is WTFPL:
-(c) Copyright BlockMen (2013-2015)
 
-This program is free software. It comes without any warranty, to
-the extent permitted by applicable law. You can redistribute it
-and/or modify it under the terms of the Do What The Fuck You Want
-To Public License, Version 2, as published by Sam Hocevar. See
-http://sam.zoy.org/wtfpl/COPYING for more details.
+Github:
+~~~~~~~
+https://github.com/BlockMen/hud
+
+Forum:
+~~~~~~
+https://forum.minetest.net/viewtopic.php?id=6342
+
+
+Changelog:
+~~~~~~~~~~
+see changelog.txt
diff --git a/api.lua b/api.lua
new file mode 100644
index 0000000..cdd9632
--- /dev/null
+++ b/api.lua
@@ -0,0 +1,206 @@
+-- global values
+hud.registered_items = {}
+hud.damage_events = {}
+hud.breath_events = {}
+
+-- keep id handling internal
+local hud_id = {}	-- hud item ids
+local sb_bg = {}	-- statbar background ids
+
+-- localize often used table
+local items = hud.registered_items
+
+local function throw_error(msg)
+	minetest.chat_send_all(msg)
+end
+
+
+--
+-- API
+--
+
+function hud.register(name, def)
+	if not name or not def then
+		throw_error("not enough parameters given")
+		return false
+	end
+
+	--TODO: allow other elements
+	if def.hud_elem_type ~= "statbar" then
+		throw_error("The given HUD element is no statbar")
+		return false
+	end
+	if items[name] ~= nil then
+		throw_error("A statbar with that name already exists")
+		return false
+	end
+
+	-- actually register
+	-- add background first since draworder is based on id :\
+	if def.hud_elem_type == "statbar" and def.background ~= nil then
+		sb_bg[name] = table.copy(def)
+		sb_bg[name].text = def.background
+		if not def.autohide_bg and def.max then
+			sb_bg[name].number = def.max
+		end
+	end
+	-- add item itself
+	items[name] = def
+
+	-- register events
+	if def.events then
+		for _,v in pairs(def.events) do
+			if v and v.type and v.func then
+				if v.type == "damage" then
+					table.insert(hud.damage_events, v)
+				end
+
+				if v.type == "breath" then
+					table.insert(hud.breath_events, v)
+				end
+			end
+		end
+	end
+	
+	-- no error so far, return sucess
+	return true
+end
+
+function hud.change_item(player, name, def)
+	if not player or not name or not def then
+		throw_error("Not enough parameters given to change HUD item")
+		return false
+	end
+	local i_name = player:get_player_name().."_"..name
+	local elem = hud_id[i_name]
+	if not elem then
+		throw_error("Given HUD element " .. dump(name) .. " does not exist".." hääää")
+		return false
+	end
+
+	-- Only update if values supported and value actually changed
+	-- update supported values (currently number and text only)
+	if def.number and elem.number then
+		if def.number ~= elem.number then
+			if elem.max and def.number > elem.max and not def.max then
+				def.number = elem.max
+			end
+			if def.max then
+				elem.max = def.max
+			end
+			player:hud_change(elem.id, "number", def.number)
+			elem.number = def.number
+			-- hide background when set
+			local bg = hud_id[i_name.."_bg"]
+			if elem.autohide_bg then
+				if def.number < 1 then
+					player:hud_change(bg.id, "number", 0)
+				else
+					local num = bg.number
+					if bg.max then
+						num = bg.max
+					end
+					player:hud_change(bg.id, "number", num)
+				end
+			else
+				if bg and bg.max and bg.max < 1 and def.max and def.max > bg.max then
+					player:hud_change(bg.id, "number", def.max)
+					bg.max = def.max
+				end	
+			end
+		end
+	end
+	if def.text and elem.text then
+		if def.text ~= elem.text then
+			player:hud_change(elem.id, "text", def.text)
+			elem.text = def.text
+		end
+	end
+
+	if def.offset and elem.offset then
+		if def.item_name and def.offset == "item" then
+			local i_name2 = player:get_player_name().."_"..def.item_name
+			local elem2 = hud_id[i_name2]
+			if elem2 then
+				local p2 = elem2.offset
+				local p1 = elem.offset
+				player:hud_change(elem2.id, "offset", p1)
+				player:hud_change(elem.id, "offset", p2)
+				elem2.offset = p1
+				elem.offset = p2
+				if elem.background then
+					local elem3 = hud_id[i_name.."_bg"]
+					if elem3 and elem3.offset then
+						player:hud_change(elem3.id, "offset", p2)
+						elem3.offset = p2
+						local elem4 = hud_id[i_name2.."_bg"]
+						if elem4 and elem4.offset then
+							player:hud_change(elem4.id, "offset", p1)
+							elem4.offset = p1
+						end
+					end
+				end
+			end
+		else
+			player:hud_change(elem.id, "offset", def.offset)
+			elem.offset = def.offset
+		end
+	end
+
+	return true
+end
+
+function hud.remove_item(player, name)
+	if not player or not name then
+		throw_error("Not enough parameters given")
+		return false
+	end
+	local i_name = player:get_player_name().."_"..name
+	if hud_id[i_name] == nil then
+		throw_error("Given HUD element " .. dump(name) .. " does not exist")
+		return false
+	end
+	player:hud_remove(hud_id[i_name].id)
+	hud_id[i_name] = nil
+
+	return true
+end
+
+
+--
+-- Add registered HUD items to joining players
+--
+
+-- Following code is placed here to keep HUD ids internal
+local function add_hud_item(player, name, def)
+	if not player or not name or not def then
+		throw_error("not enough parameters given")
+		return false
+	end
+	local i_name = player:get_player_name().."_"..name
+	hud_id[i_name] = def
+	hud_id[i_name].id = player:hud_add(def)
+end
+
+minetest.register_on_joinplayer(function(player)
+
+	-- first: hide the default statbars
+	player:hud_set_flags({healthbar = false, breathbar = false})
+
+	-- now add the backgrounds (e.g. for statbars)
+	for _,item in pairs(sb_bg) do
+		add_hud_item(player, _.."_bg", item)
+	end
+	-- and finally the actual HUD items
+	for _,item in pairs(items) do
+		add_hud_item(player, _, item)
+	end
+
+	-- fancy hotbar (only when no crafting mod present)
+	if minetest.get_modpath("crafting") == nil then
+	    minetest.after(0.5, function()
+		player:hud_set_hotbar_image("hud_hotbar.png")
+		player:hud_set_hotbar_selected_image("hud_hotbar_selected.png")
+	    end)
+	end
+end)
diff --git a/armor.lua b/armor.lua
deleted file mode 100644
index 7f0d0cf..0000000
--- a/armor.lua
+++ /dev/null
@@ -1,34 +0,0 @@
-minetest.after(0, function()
- if not armor.def then
-	minetest.after(2,minetest.chat_send_all,"#Better HUD: Please update your version of 3darmor")
-	HUD_SHOW_ARMOR = false
- end
-end)
-
-function hud.get_armor(player)
-	if not player or not armor.def then
-		return
-	end
-	local name = player:get_player_name()
-	local def = armor.def[name] or nil
-	if def and def.state and def.count then
-		hud.set_armor(name, def.state, def.count)
-	end
-end
-
-function hud.set_armor(player_name, ges_state, items)
-	local max_items = 4
-	if items == 5 then 
-		max_items = items
-	end
-	local max = max_items * 65535
-	local lvl = max - ges_state
-	lvl = lvl/max
-	if ges_state == 0 and items == 0 then
-		lvl = 0
-	end
-
-	hud.armor[player_name] = lvl* (items * (20 / max_items))
-
-
-end
\ No newline at end of file
diff --git a/builtin.lua b/builtin.lua
new file mode 100644
index 0000000..b82ba41
--- /dev/null
+++ b/builtin.lua
@@ -0,0 +1,101 @@
+HUD_SB_SIZE = {x = 24, y = 24}
+
+HUD_HEALTH_POS = {x = 0.5,y = 1}
+HUD_HEALTH_OFFSET = {x = -262, y = -87}
+HUD_AIR_POS = {x = 0.5, y = 1}
+HUD_AIR_OFFSET = {x = 15, y = -87}
+HUD_HUNGER_POS = {x = 0.5, y = 1}
+HUD_HUNGER_OFFSET = {x = 15, y = -110}
+HUD_ARMOR_POS = {x = 0.5, y = 1}
+HUD_ARMOR_OFFSET = {x = -262, y = -110}
+
+-- read hud.conf settings
+hud.read_conf()
+
+local damage_enabled = minetest.setting_getbool("enable_damage")
+
+hud.show_hunger = minetest.get_modpath("hunger") ~= nil
+hud.show_armor = minetest.get_modpath("3d_armor") ~= nil
+
+-- check if some settings are invalid
+local enable_hunger = minetest.setting_getbool("hud_hunger_enable")
+if (enable_hunger == true or HUD_ENABLE_HUNGER == true) and not hud.show_hunger then
+	hud.notify_hunger(5)
+end
+
+if damage_enabled then
+    hud.register("health", {
+	hud_elem_type = "statbar",
+	position = HUD_HEALTH_POS,
+	size = HUD_SB_SIZE,
+	text = "hud_heart_fg.png",
+	number = 20,
+	alignment = {x=-1,y=-1},
+	offset = HUD_HEALTH_OFFSET,
+	background = "hud_heart_bg.png",
+	events = {
+		 {
+			type = "damage",
+			func = function(player)
+				hud.change_item(player, "health", {number = player:get_hp()})
+			end
+		 }
+	},
+    })
+
+    hud.register("air", {
+	hud_elem_type = "statbar",
+	position = HUD_AIR_POS,
+	size = HUD_SB_SIZE,
+	text = "hud_air_fg.png",
+	number = 0,
+	alignment = {x=-1,y=-1},
+	offset = HUD_AIR_OFFSET,
+	background = nil,
+	events = {
+		 {
+			type = "breath",
+			func = function(player)
+				local air = player:get_breath()
+				if air > 10 then
+					air = 0
+				end
+				hud.change_item(player, "air", {number = air * 2})
+			end
+		 }
+	},
+    })
+
+    hud.register("armor", {
+	hud_elem_type = "statbar",
+	position = HUD_ARMOR_POS,
+	size = HUD_SB_SIZE,
+	text = "hud_armor_fg.png",
+	number = 0,
+	alignment = {x=-1,y=-1},
+	offset = HUD_ARMOR_OFFSET,
+	background = "hud_armor_bg.png",
+	autohide_bg = true,
+	max = 20,
+    })
+
+    local start_value = 0
+    if show_hunger then
+	start_value = 20
+    end
+
+    hud.register("hunger", {
+	hud_elem_type = "statbar",
+	position = HUD_HUNGER_POS,
+	size = HUD_SB_SIZE,
+	text = "hud_hunger_fg.png",
+	number = start_value,
+	alignment = {x=-1,y=-1},
+	offset = HUD_HUNGER_OFFSET,
+	background = "hud_hunger_bg.png",
+	--autohide_bg = true,
+	max = 0,
+    })
+else
+	hud.show_armor = false
+end
diff --git a/changelog.txt b/changelog.txt
index 4eac6c5..a2392b3 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,50 +1,48 @@
-0.2 Beta
---------
-- added support of custom config files
-- you can eat max. 50% more than before (although it isnt shown in hunger bar)
-- you get healed with 8 breads and more (in hunger bar) now
-- a bread (from farming) == 2 breads in hunger bar
-
-0.2.1 Beta
-----------
-- tweaked override of food
-- added support for food of dwares, moretrees and simple mobs
+2.0
+---
+- Complete rewrite
+- Moved hunger into seperate mod
+- Added API
+- Switched License to LGPL 2.1
 
-0.2.2 Beta
-----------
-- added support for food of animalmaterials (mobf modpack),fishing
+=====   =====   =====
+-----   0-1.x   -----
+=====   =====   =====
 
-0.2.3 Beta
-----------
-- added support for food of glooptest and bushes (commit by CheeseKeg)
+1.4.1
+-----
+- ###
 
-0.3 Beta
-----------
-- added fancy borders of hud inventory bar (only for screenheight <= 800)
+1.4
+---
+- New hunger mechanics/added experimental player-action based hunger
+- Better crosshair texture, switched to "new" default hand
+- Added support for farming redo mod, kpgmobs and jkmod
 
-0.4 Beta
-----------
-- enabled drowning
+1.3.3
+-----
+- Prevent crash with armor mod and missing player
+- Add support for ethereal mod (by TenPlus1)
 
-0.5 Beta
-----------
-- removed the fancy borders of hud inventory bar and moved to new native support
-- moved crosshair to native support too
+1.3.2
+-----
+- Fix dependecies (by Chris Beelby)
+- Add support for creatures mod
+- Add optional healing for food (by TenPlus1)
 
-1.0
----
-- hunger is reset after death
-- health and hunger bar is shown correct on all screen resolutions now
-- switched to changed native hotbar image support
-- fixed revival of player when drown
-- hunger bar is not shown anymore if hunger is disabled
-- hunger can be disabled by minetest.conf ("hud_hunger_enable = false")
+1.3.1
+-----
+- Add compatibility for statbar scaling
+- Fix typo in depends.txt
+- Lower maintimer tick
 
-1.1
+1.3
 ---
-- added support for stu's 3darmor mod
-- restructured and cleaned up code
-- added support for poisen food (damages player, but does not kill)
+- New way hunger is saved (all old files in world dirctory can get deleted [e.g. hud_BlockMen_hunger])
+- Fixed healing (not while drowning, fix after death)
+- Add support for mods: seaplants[sea] and mobfcooking (by Xanthin)
+- Tweaked hand image
+- Player can die caus of starving now
 
 1.2
 ---
@@ -56,33 +54,50 @@
 - Add support for mods: fruit and mush45
 - New images for hotbar, smaller armor icons
 
-1.3
+1.1
 ---
-- New way hunger is saved (all old files in world dirctory can get deleted [e.g. hud_BlockMen_hunger])
-- Fixed healing (not while drowning, fix after death)
-- Add support for mods: seaplants[sea] and mobfcooking (by Xanthin)
-- Tweaked hand image
-- Player can die caus of starving now
+- added support for stu's 3darmor mod
+- restructured and cleaned up code
+- added support for poisen food (damages player, but does not kill)
 
-1.3.1
------
-- Add compatibility for statbar scaling
-- Fix typo in depends.txt
-- Lower maintimer tick
+1.0
+---
+- hunger is reset after death
+- health and hunger bar is shown correct on all screen resolutions now
+- switched to changed native hotbar image support
+- fixed revival of player when drown
+- hunger bar is not shown anymore if hunger is disabled
+- hunger can be disabled by minetest.conf ("hud_hunger_enable = false")
 
-1.3.2
------
-- Fix dependecies (by Chris Beelby)
-- Add support for creatures mod
-- Add optional healing for food (by TenPlus1)
+0.5 Beta
+----------
+- removed the fancy borders of hud inventory bar and moved to new native support
+- moved crosshair to native support too
 
-1.3.3
------
-- Prevent crash with armor mod and missing player
-- Add support for ethereal mod (by TenPlus1)
+0.4 Beta
+----------
+- enabled drowning
 
-1.4
----
-- New hunger mechanics/added experimental player-action based hunger
-- Better crosshair texture, switched to "new" default hand
-- Added support for farming redo mod, kpgmobs and jkmod
+0.3 Beta
+----------
+- added fancy borders of hud inventory bar (only for screenheight <= 800)
+
+0.2.3 Beta
+----------
+- added support for food of glooptest and bushes (commit by CheeseKeg)
+
+0.2.2 Beta
+----------
+- added support for food of animalmaterials (mobf modpack),fishing
+
+0.2.1 Beta
+----------
+- tweaked override of food
+- added support for food of dwares, moretrees and simple mobs
+
+0.2 Beta
+--------
+- added support of custom config files
+- you can eat max. 50% more than before (although it isnt shown in hunger bar)
+- you get healed with 8 breads and more (in hunger bar) now
+- a bread (from farming) == 2 breads in hunger bar
diff --git a/depends.txt b/depends.txt
index 2f91ba6..7be6dbb 100644
--- a/depends.txt
+++ b/depends.txt
@@ -1,27 +1 @@
-default
-animalmaterials?
-bucket?
-bushes?
-bushes_classic?
-cooking?
-creatures?
-docfarming?
-dwarves?
-ethereal?
-farming?
-farming_plus?
-ferns?
-fishing?
-fruit?
-glooptest?
-jkanimals?
-jkfarming?
-jkwine?
-kpgmobs?
-mobfcooking?
-mobs?
-moretrees?
-mtfoods?
-mush45?
-mushroom?
-seaplants?
+3d_armor?
\ No newline at end of file
diff --git a/functions.lua b/functions.lua
new file mode 100644
index 0000000..a7063d9
--- /dev/null
+++ b/functions.lua
@@ -0,0 +1,46 @@
+function hud.read_conf()
+	local mod_path = minetest.get_modpath("hud")
+	local set = io.open(mod_path .. "/hud.conf", "r")
+	if set then
+		dofile(mod_path .. "/hud.conf")
+		set:close()
+	end
+end
+
+function hud.notify_hunger(delay, use)
+	local txt_part = "enable"
+	if use then
+		txt_part = "use"
+	end
+	minetest.after(delay, function()
+		minetest.chat_send_all("#Better HUD: You can't " .. txt_part .. " hunger without the \"hunger\" mod")
+		minetest.chat_send_all("	Enable it or download it from \"https://github.com/BlockMen/hunger\"")
+	end)
+end
+
+function hud.player_event(player, event)
+   --needed for first update called by on_join
+   minetest.after(0, function()
+	if event == "health_changed" then
+		for _,v in pairs(hud.damage_events) do
+			if v.func then
+				v.func(player)
+			end
+		end
+	end
+
+	if event == "breath_changed" then
+		for _,v in pairs(hud.breath_events) do
+			if v.func then
+				v.func(player)
+			end
+		end
+	end
+
+	if event == "hud_changed" then--called when flags changed
+
+	end
+    end)
+end
+
+core.register_playerevent(hud.player_event)
diff --git a/hud.conf.example b/hud.conf.example
index ffa4cd7..f96041d 100644
--- a/hud.conf.example
+++ b/hud.conf.example
@@ -1,33 +1,35 @@
 --##Better HUD example config file##
 ------------------------------------
--- This example moves the health bar in the top left corner and the hunger bar in the top right corner
+-- This example moves the statbars in the down left and down right corners. By Echoes91
 
-
---
--- general settings
---
-HUD_ENABLE_HUNGER = true		--enables/disables hunger
-HUD_HUNGER_TICK = 300			--sets time for loosing 1/2 bread (of 10) (in seconds)
+-- NOTICE --
+-- if damage is disabled no statbar is shown at all
+-- Make sure that the statbars are shown correct on other screen resolutions aswell
 
 
---!NOTICE!--
--- >>if damage is disabled neither health bar nor hunger bar or breath bar is shown
+HUD_SB_SIZE = {x = 24, y = 24}		-- statbar icon size in pixel before (!) scaling
 
 --
 -- health bar
 --
-HUD_HEALTH_POS = {x=0,y=0}			--min 0, max 1
-HUD_HEALTH_OFFSET = {x=5,y=30}		--offset in pixel
+HUD_HEALTH_POS = {x = 0, y = 1}         	-- min 0, max 1
+HUD_HEALTH_OFFSET = {x = 10, y = -30}		-- offset in pixel
 
 --
 -- hunger bar
 --
-HUD_HUNGER_POS = {x=1,y=0}			--min 0, max 1
-HUD_HUNGER_OFFSET = {x=-175,y=30}	--offset in pixel
+HUD_HUNGER_POS = {x = 1, y = 1}         	-- min 0, max 1
+HUD_HUNGER_OFFSET = {x = -250, y = -30}		-- offset in pixel
 
 --
 -- breath bar
 --
-HUD_AIR_POS = {x=0.5,y=1}		--min 0, max 1
-HUD_AIR_OFFSET = {x=15,y=-75}	--offset in pixel
+HUD_AIR_POS = {x = 1, y = 1}			-- min 0, max 1
+HUD_AIR_OFFSET = {x = -250, y = -60}		-- offset in pixel
+
+--
+-- armor bar
+--
+HUD_ARMOR_POS = {x = 0, y = 1}			-- min 0, max 1
+HUD_ARMOR_OFFSET = {x = 10, y = -60}		-- offset in pixel
 
diff --git a/hunger.lua b/hunger.lua
deleted file mode 100644
index c9a53ae..0000000
--- a/hunger.lua
+++ /dev/null
@@ -1,392 +0,0 @@
--- Keep these for backwards compatibility
-function hud.save_hunger(player)
-	hud.set_hunger(player)
-end
-function hud.load_hunger(player)
-	hud.get_hunger(player)
-end
-
--- Poison player
-local function poisenp(tick, time, time_left, player)
-	time_left = time_left + tick
-	if time_left < time then
-		minetest.after(tick, poisenp, tick, time, time_left, player)
-	else
-		--reset hud image
-	end
-	if player:get_hp()-1 > 0 then
-		player:set_hp(player:get_hp()-1)
-	end
-	
-end
-
-function hud.item_eat(hunger_change, replace_with_item, poisen, heal)
-	return function(itemstack, user, pointed_thing)
-		if itemstack:take_item() ~= nil and user ~= nil then
-			local name = user:get_player_name()
-			local h = tonumber(hud.hunger[name])
-			local hp = user:get_hp()
-
-			-- Saturation
-			if h < 30 and hunger_change then
-				h = h + hunger_change
-				if h > 30 then h = 30 end
-				hud.hunger[name] = h
-				hud.set_hunger(user)
-			end
-			-- Healing
-			if hp < 20 and heal then
-				hp = hp + heal
-				if hp > 20 then hp = 20 end
-				user:set_hp(hp)
-			end
-			-- Poison
-			if poisen then
-				--set hud-img
-				poisenp(1.0, poisen, 0, user)
-			end
-
-			--sound:eat
-			itemstack:add_item(replace_with_item)
-		end
-		return itemstack
-	end
-end
-
-local function overwrite(name, hunger_change, replace_with_item, poisen, heal)
-	local tab = minetest.registered_items[name]
-	if tab == nil then return end
-	tab.on_use = hud.item_eat(hunger_change, replace_with_item, poisen, heal)
-	minetest.registered_items[name] = tab
-end
-
-overwrite("default:apple", 2)
-if minetest.get_modpath("farming") ~= nil then
-	overwrite("farming:bread", 4)
-end
-
-if minetest.get_modpath("mobs") ~= nil then
-	if mobs.mod ~= nil and mobs.mod == "redo" then
-		overwrite("mobs:cheese", 4)
-		overwrite("mobs:meat", 8)
-		overwrite("mobs:meat_raw", 4)
-		overwrite("mobs:rat_cooked", 4)
-		overwrite("mobs:honey", 2)
-		overwrite("mobs:pork_raw", 3, "", 3)
-		overwrite("mobs:pork_cooked", 8)
-		overwrite("mobs:chicken_cooked", 6)
-		overwrite("mobs:chicken_raw", 2, "", 3)
-		overwrite("mobs:chicken_egg_fried", 2)
-		if minetest.get_modpath("bucket") then 
-			overwrite("mobs:bucket_milk", 3, "bucket:bucket_empty")
-		end
-	else
-		overwrite("mobs:meat", 6)
-		overwrite("mobs:meat_raw", 3)
-		overwrite("mobs:rat_cooked", 5)
-	end
-end
-
-if minetest.get_modpath("moretrees") ~= nil then
-	overwrite("moretrees:coconut_milk", 1)
-	overwrite("moretrees:raw_coconut", 2)
-	overwrite("moretrees:acorn_muffin", 3)
-	overwrite("moretrees:spruce_nuts", 1)
-	overwrite("moretrees:pine_nuts", 1)
-	overwrite("moretrees:fir_nuts", 1)
-end
-
-if minetest.get_modpath("dwarves") ~= nil then
-	overwrite("dwarves:beer", 2)
-	overwrite("dwarves:apple_cider", 1)
-	overwrite("dwarves:midus", 2)
-	overwrite("dwarves:tequila", 2)
-	overwrite("dwarves:tequila_with_lime", 2)
-	overwrite("dwarves:sake", 2)
-end
-
-if minetest.get_modpath("animalmaterials") ~= nil then
-	overwrite("animalmaterials:milk", 2)
-	overwrite("animalmaterials:meat_raw", 3)
-	overwrite("animalmaterials:meat_pork", 3)
-	overwrite("animalmaterials:meat_beef", 3)
-	overwrite("animalmaterials:meat_chicken", 3)
-	overwrite("animalmaterials:meat_lamb", 3)
-	overwrite("animalmaterials:meat_venison", 3)
-	overwrite("animalmaterials:meat_undead", 3, "", 3)
-	overwrite("animalmaterials:meat_toxic", 3, "", 5)
-	overwrite("animalmaterials:meat_ostrich", 3)
-	overwrite("animalmaterials:fish_bluewhite", 2)
-	overwrite("animalmaterials:fish_clownfish", 2)
-end
-
-if minetest.get_modpath("fishing") ~= nil then
-	overwrite("fishing:fish_raw", 2)
-	overwrite("fishing:fish_cooked", 5)
-	overwrite("fishing:sushi", 6)
-	overwrite("fishing:shark", 4)
-	overwrite("fishing:shark_cooked", 8)
-	overwrite("fishing:pike", 4)
-	overwrite("fishing:pike_cooked", 8)
-end
-
-if minetest.get_modpath("glooptest") ~= nil then
-	overwrite("glooptest:kalite_lump", 1)
-end
-
-if minetest.get_modpath("bushes") ~= nil then
-	overwrite("bushes:sugar", 1)
-	overwrite("bushes:strawberry", 2)
-	overwrite("bushes:berry_pie_raw", 3)
-	overwrite("bushes:berry_pie_cooked", 4)
-	overwrite("bushes:basket_pies", 15)
-end
-
-if minetest.get_modpath("bushes_classic") then
-	-- bushes_classic mod, as found in the plantlife modpack
-	local berries = {
-	    "strawberry",
-		"blackberry",
-		"blueberry",
-		"raspberry",
-		"gooseberry",
-		"mixed_berry"}
-	for _, berry in ipairs(berries) do
-		if berry ~= "mixed_berry" then
-			overwrite("bushes:"..berry, 1)
-		end
-		overwrite("bushes:"..berry.."_pie_raw", 2)
-		overwrite("bushes:"..berry.."_pie_cooked", 5)
-		overwrite("bushes:basket_"..berry, 15)
-	end
-end
-
-if minetest.get_modpath("mushroom") ~= nil then
-	overwrite("mushroom:brown", 1)
-	overwrite("mushroom:red", 1, "", 3)
-	-- mushroom potions: red = strong poison, brown = light restorative
-	if minetest.get_modpath("vessels") then
-		overwrite("mushroom:brown_essence", 1, "vessels:glass_bottle", nil, 4)
-		overwrite("mushroom:poison", 1, "vessels:glass_bottle", 10)
-	end
-end
-
-if minetest.get_modpath("docfarming") ~= nil then
-	overwrite("docfarming:carrot", 3)
-	overwrite("docfarming:cucumber", 2)
-	overwrite("docfarming:corn", 3)
-	overwrite("docfarming:potato", 4)
-	overwrite("docfarming:bakedpotato", 5)
-	overwrite("docfarming:raspberry", 3)
-end
-
-if minetest.get_modpath("farming_plus") ~= nil then
-	overwrite("farming_plus:carrot_item", 3)
-	overwrite("farming_plus:banana", 2)
-	overwrite("farming_plus:orange_item", 2)
-	overwrite("farming:pumpkin_bread", 4)
-	overwrite("farming_plus:strawberry_item", 2)
-	overwrite("farming_plus:tomato_item", 2)
-	overwrite("farming_plus:potato_item", 4)
-	overwrite("farming_plus:rhubarb_item", 2)
-end
-
-if minetest.get_modpath("mtfoods") ~= nil then
-	overwrite("mtfoods:dandelion_milk", 1)
-	overwrite("mtfoods:sugar", 1)
-	overwrite("mtfoods:short_bread", 4)
-	overwrite("mtfoods:cream", 1)
-	overwrite("mtfoods:chocolate", 2)
-	overwrite("mtfoods:cupcake", 2)
-	overwrite("mtfoods:strawberry_shortcake", 2)
-	overwrite("mtfoods:cake", 3)
-	overwrite("mtfoods:chocolate_cake", 3)
-	overwrite("mtfoods:carrot_cake", 3)
-	overwrite("mtfoods:pie_crust", 3)
-	overwrite("mtfoods:apple_pie", 3)
-	overwrite("mtfoods:rhubarb_pie", 2)
-	overwrite("mtfoods:banana_pie", 3)
-	overwrite("mtfoods:pumpkin_pie", 3)
-	overwrite("mtfoods:cookies", 2)
-	overwrite("mtfoods:mlt_burger", 5)
-	overwrite("mtfoods:potato_slices", 2)
-	overwrite("mtfoods:potato_chips", 3)
-	--mtfoods:medicine
-	overwrite("mtfoods:casserole", 3)
-	overwrite("mtfoods:glass_flute", 2)
-	overwrite("mtfoods:orange_juice", 2)
-	overwrite("mtfoods:apple_juice", 2)
-	overwrite("mtfoods:apple_cider", 2)
-	overwrite("mtfoods:cider_rack", 2)
-end
-
-if minetest.get_modpath("fruit") ~= nil then
-	overwrite("fruit:apple", 2)
-	overwrite("fruit:pear", 2)
-	overwrite("fruit:bananna", 3)
-	overwrite("fruit:orange", 2)
-end
-
-if minetest.get_modpath("mush45") ~= nil then
-	overwrite("mush45:meal", 4)
-end
-
-if minetest.get_modpath("seaplants") ~= nil then
-	overwrite("seaplants:kelpgreen", 1)
-	overwrite("seaplants:kelpbrown", 1)
-	overwrite("seaplants:seagrassgreen", 1)
-	overwrite("seaplants:seagrassred", 1)
-	overwrite("seaplants:seasaladmix", 6)
-	overwrite("seaplants:kelpgreensalad", 1)
-	overwrite("seaplants:kelpbrownsalad", 1)
-	overwrite("seaplants:seagrassgreensalad", 1)
-	overwrite("seaplants:seagrassgreensalad", 1)
-end
-
-if minetest.get_modpath("mobfcooking") ~= nil then
-	overwrite("mobfcooking:cooked_pork", 6)
-	overwrite("mobfcooking:cooked_ostrich", 6)
-	overwrite("mobfcooking:cooked_beef", 6)
-	overwrite("mobfcooking:cooked_chicken", 6)
-	overwrite("mobfcooking:cooked_lamb", 6)
-	overwrite("mobfcooking:cooked_venison", 6)
-	overwrite("mobfcooking:cooked_fish", 6)
-end
-
-if minetest.get_modpath("creatures") ~= nil then
-	overwrite("creatures:meat", 6)
-	overwrite("creatures:flesh", 3)
-	overwrite("creatures:rotten_flesh", 3, "", 3)
-end
-
-if minetest.get_modpath("ethereal") then
-   overwrite("ethereal:strawberry", 1)
-   overwrite("ethereal:banana", 4)
-   overwrite("ethereal:pine_nuts", 1)
-   overwrite("ethereal:bamboo_sprout", 0, "", 3)
-   overwrite("ethereal:fern_tubers", 1)
-   overwrite("ethereal:banana_bread", 7)
-   overwrite("ethereal:mushroom_plant", 2)
-   overwrite("ethereal:coconut_slice", 2)
-   overwrite("ethereal:golden_apple", 4, "", nil, 10)
-   overwrite("ethereal:wild_onion_plant", 2)
-   overwrite("ethereal:mushroom_soup", 4, "ethereal:bowl")
-   overwrite("ethereal:mushroom_soup_cooked", 6, "ethereal:bowl")
-   overwrite("ethereal:hearty_stew", 6, "ethereal:bowl", 3)
-   overwrite("ethereal:hearty_stew_cooked", 10, "ethereal:bowl")
-   if minetest.get_modpath("bucket") then
-  	overwrite("ethereal:bucket_cactus", 2, "bucket:bucket_empty")
-   end
-   overwrite("ethereal:fish_raw", 2)
-   overwrite("ethereal:fish_cooked", 5)
-   overwrite("ethereal:seaweed", 1)
-   overwrite("ethereal:yellowleaves", 1, "", nil, 1)
-   overwrite("ethereal:sashimi", 4)
-end
-
-if minetest.get_modpath("farming") and farming.mod == "redo" then
-   overwrite("farming:bread", 6)
-   overwrite("farming:potato", 1)
-   overwrite("farming:baked_potato", 6)
-   overwrite("farming:cucumber", 4)
-   overwrite("farming:tomato", 4)
-   overwrite("farming:carrot", 3)
-   overwrite("farming:carrot_gold", 6, "", nil, 8)
-   overwrite("farming:corn", 3)
-   overwrite("farming:corn_cob", 5)
-   overwrite("farming:melon_slice", 2)
-   overwrite("farming:pumpkin_slice", 1)
-   overwrite("farming:pumpkin_bread", 9)
-   overwrite("farming:coffee_cup", 2, "farming:drinking_cup")
-   overwrite("farming:coffee_cup_hot", 3, "farming:drinking_cup", nil, 2)
-   overwrite("farming:cookie", 2)
-   overwrite("farming:chocolate_dark", 3)
-   overwrite("farming:donut", 4)
-   overwrite("farming:donut_chocolate", 6)
-   overwrite("farming:donut_apple", 6)
-   overwrite("farming:raspberries", 1)
-   overwrite("farming:blueberries", 1)
-   overwrite("farming:muffin_blueberry", 4)
-   if minetest.get_modpath("vessels") then
-	overwrite("farming:smoothie_raspberry", 2, "vessels:drinking_glass")
-   end
-   overwrite("farming:rhubarb", 1)
-   overwrite("farming:rhubarb_pie", 6)
-end
-
-if minetest.get_modpath("kpgmobs") ~= nil then
-	overwrite("kpgmobs:uley", 3)
-	overwrite("kpgmobs:meat", 6)
-	overwrite("kpgmobs:rat_cooked", 5)
-	overwrite("kpgmobs:med_cooked", 4)
-  	if minetest.get_modpath("bucket") then
-	   overwrite("kpgmobs:bucket_milk", 4, "bucket:bucket_empty")
-	end
-end
-
-if minetest.get_modpath("jkfarming") ~= nil then
-	overwrite("jkfarming:carrot", 3)
-	overwrite("jkfarming:corn", 3)
-	overwrite("jkfarming:melon_part", 2)
-	overwrite("jkfarming:cake", 3)
-end
-
-if minetest.get_modpath("jkanimals") ~= nil then
-	overwrite("jkanimals:meat", 6)
-end
-
-if minetest.get_modpath("jkwine") ~= nil then
-	overwrite("jkwine:grapes", 2)
-	overwrite("jkwine:winebottle", 1)
-end
-
-if minetest.get_modpath("cooking") ~= nil then
-	overwrite("cooking:meat_beef_cooked", 4)
-	overwrite("cooking:fish_bluewhite_cooked", 3)
-	overwrite("cooking:fish_clownfish_cooked", 1)
-	overwrite("cooking:meat_chicken_cooked", 2)
-	overwrite("cooking:meat_cooked", 2)
-	overwrite("cooking:meat_pork_cooked", 3)
-	overwrite("cooking:meat_toxic_cooked", -3)
-	overwrite("cooking:meat_venison_cooked", 3)
-	overwrite("cooking:meat_undead_cooked", 1)
-end
-
--- ferns mod of plantlife_modpack
-if minetest.get_modpath("ferns") ~= nil then
-	overwrite("ferns:fiddlehead", 1, "", 1)
-	overwrite("ferns:fiddlehead_roasted", 3)
-	overwrite("ferns:ferntuber_roasted", 3)
-	overwrite("ferns:horsetail_01", 1)
-end
-
--- player-action based hunger changes
-function hud.handle_node_actions(pos, oldnode, player, ext)
-	if not player or not player:is_player() then
-		return
-	end
-	local name = player:get_player_name()
-	local exhaus = hud.exhaustion[name]
-	local new = HUD_HUNGER_EXHAUST_PLACE
-	-- placenode event
-	if not ext then
-		new = HUD_HUNGER_EXHAUST_DIG
-	end
-	-- assume its send by main timer when movement detected
-	if not pos and not oldnode then
-		new = HUD_HUNGER_EXHAUST_MOVE
-	end
-	exhaus = exhaus + new
-	if exhaus > HUD_HUNGER_EXHAUST_LVL then
-		exhaus = 0
-		local h = tonumber(hud.hunger[name])
-		h = h - 1
-		if h < 0 then h = 0 end
-		hud.hunger[name] = h
-		hud.set_hunger(player)
-	end
-	hud.exhaustion[name] = exhaus
-end
-
-minetest.register_on_placenode(hud.handle_node_actions)
-minetest.register_on_dignode(hud.handle_node_actions)
diff --git a/init.lua b/init.lua
index 1dc9809..c011f67 100644
--- a/init.lua
+++ b/init.lua
@@ -1,339 +1,8 @@
 hud = {}
+local modpath = minetest.get_modpath("hud")
 
--- HUD statbar values
-hud.health = {}
-hud.hunger = {}
-hud.air = {}
-hud.armor = {}
-hud.hunger_out = {}
-hud.armor_out = {}
+dofile(modpath .. "/api.lua")
+dofile(modpath .. "/functions.lua")
+dofile(modpath .. "/builtin.lua")
+dofile(modpath .. "/legacy.lua")
 
--- HUD item ids
-local health_hud = {}
-local hunger_hud = {}
-local air_hud = {}
-local armor_hud = {}
-local armor_hud_bg = {}
-
--- default settings
-
-HUD_SCALEABLE = false
-HUD_SIZE = ""
-
- -- statbar positions
-HUD_HEALTH_POS = {x=0.5,y=0.9}
-HUD_HEALTH_OFFSET = {x=-175, y=2}
-HUD_HUNGER_POS = {x=0.5,y=0.9}
-HUD_HUNGER_OFFSET = {x=15, y=2}
-HUD_AIR_POS = {x=0.5,y=0.9}
-HUD_AIR_OFFSET = {x=15,y=-15}
-HUD_ARMOR_POS = {x=0.5,y=0.9}
-HUD_ARMOR_OFFSET = {x=-175, y=-15}
-
--- dirty way to check for new statbars
-if dump(minetest.hud_replace_builtin) ~= "nil" then
-	HUD_SCALEABLE = true
-	HUD_SIZE = {x=24, y=24}
-	HUD_HEALTH_POS = {x=0.5,y=1}
-	HUD_HEALTH_OFFSET = {x=-262, y=-87}
-	HUD_HUNGER_POS = {x=0.5,y=1}
-	HUD_HUNGER_OFFSET = {x=15, y=-87}
-	HUD_AIR_POS = {x=0.5,y=1}
-	HUD_AIR_OFFSET = {x=15,y=-110}
-	HUD_ARMOR_POS = {x=0.5,y=1}
-	HUD_ARMOR_OFFSET = {x=-262, y=-110}
-end
-
-HUD_TICK = 0.1
-
---Some hunger settings
-hud.exhaustion = {} -- Exhaustion is experimental!
-
-HUD_HUNGER_TICK = 800 -- time in seconds after that 1 hunger point is taken 
-HUD_HUNGER_EXHAUST_DIG = 3  -- exhaustion increased this value after digged node
-HUD_HUNGER_EXHAUST_PLACE = 1 -- exhaustion increased this value after placed
-HUD_HUNGER_EXHAUST_MOVE = 0.3 -- exhaustion increased this value if player movement detected
-HUD_HUNGER_EXHAUST_LVL = 160 -- at what exhaustion player saturation gets lowerd
-
-
-
-HUD_ENABLE_HUNGER = minetest.setting_getbool("hud_hunger_enable")
-if HUD_ENABLE_HUNGER == nil then
-	HUD_ENABLE_HUNGER = minetest.setting_getbool("enable_damage")
-end
-
-HUD_SHOW_ARMOR = false
-if minetest.get_modpath("3d_armor") ~= nil then
-	HUD_SHOW_ARMOR = true
-end
-
---load custom settings
-local set = io.open(minetest.get_modpath("hud").."/hud.conf", "r")
-if set then 
-	dofile(minetest.get_modpath("hud").."/hud.conf")
-	set:close()
-else
-	if not HUD_ENABLE_HUNGER then
-		HUD_AIR_OFFSET = HUD_HUNGER_OFFSET
-	end
-end
-
-local function hide_builtin(player)
-	 player:hud_set_flags({crosshair = true, hotbar = true, healthbar = false, wielditem = true, breathbar = false})
-end
-
-
-local function custom_hud(player)
- local name = player:get_player_name()
-
--- fancy hotbar (only when no crafting mod present)
- if minetest.get_modpath("crafting") == nil then
-	player:hud_set_hotbar_image("hud_hotbar.png")
-	player:hud_set_hotbar_selected_image("hud_hotbar_selected.png")
- end
-
- if minetest.setting_getbool("enable_damage") then
- --hunger
-	if HUD_ENABLE_HUNGER then
-       	 player:hud_add({
-		hud_elem_type = "statbar",
-		position = HUD_HUNGER_POS,
-		size = HUD_SIZE,
-		text = "hud_hunger_bg.png",
-		number = 20,
-		alignment = {x=-1,y=-1},
-		offset = HUD_HUNGER_OFFSET,
-	 })
-	local h = hud.hunger[name]
-	if h == nil or h > 20 then h = 20 end
-	 hunger_hud[name] = player:hud_add({
-		hud_elem_type = "statbar",
-		position = HUD_HUNGER_POS,
-		size = HUD_SIZE,
-		text = "hud_hunger_fg.png",
-		number = h,
-		alignment = {x=-1,y=-1},
-		offset = HUD_HUNGER_OFFSET,
-	 })
-	end
- --health
-        player:hud_add({
-		hud_elem_type = "statbar",
-		position = HUD_HEALTH_POS,
-		size = HUD_SIZE,
-		text = "hud_heart_bg.png",
-		number = 20,
-		alignment = {x=-1,y=-1},
-		offset = HUD_HEALTH_OFFSET,
-	})
-	health_hud[name] = player:hud_add({
-		hud_elem_type = "statbar",
-		position = HUD_HEALTH_POS,
-		size = HUD_SIZE,
-		text = "hud_heart_fg.png",
-		number = player:get_hp(),
-		alignment = {x=-1,y=-1},
-		offset = HUD_HEALTH_OFFSET,
-	})
-
- --air
-	air_hud[name] = player:hud_add({
-		hud_elem_type = "statbar",
-		position = HUD_AIR_POS,
-		size = HUD_SIZE,
-		text = "hud_air_fg.png",
-		number = 0,
-		alignment = {x=-1,y=-1},
-		offset = HUD_AIR_OFFSET,
-	})
-
- --armor
- if HUD_SHOW_ARMOR then
-       armor_hud_bg[name] = player:hud_add({
-		hud_elem_type = "statbar",
-		position = HUD_ARMOR_POS,
-		size = HUD_SIZE,
-		text = "hud_armor_bg.png",
-		number = 0,
-		alignment = {x=-1,y=-1},
-		offset = HUD_ARMOR_OFFSET,
-	})
-	armor_hud[name] = player:hud_add({
-		hud_elem_type = "statbar",
-		position = HUD_ARMOR_POS,
-		size = HUD_SIZE,
-		text = "hud_armor_fg.png",
-		number = 0,
-		alignment = {x=-1,y=-1},
-		offset = HUD_ARMOR_OFFSET,
-	})
-  end
- end
-end
-
---needs to be defined for older version of 3darmor
-function hud.set_armor()
-end
-
-
-if HUD_ENABLE_HUNGER then dofile(minetest.get_modpath("hud").."/hunger.lua") end
-if HUD_SHOW_ARMOR then dofile(minetest.get_modpath("hud").."/armor.lua") end
-
--- update hud elemtens if value has changed
-local function update_hud(player)
-	local name = player:get_player_name()
- --air
-	local air = tonumber(hud.air[name])
-	if player:get_breath() ~= air then
-		air = player:get_breath()
-		hud.air[name] = air
-		if air > 10 then air = 0 end
-		player:hud_change(air_hud[name], "number", air*2)
-	end
- --health
-	local hp = tonumber(hud.health[name])
-	if player:get_hp() ~= hp then
-		hp = player:get_hp()
-		hud.health[name] = hp
-		player:hud_change(health_hud[name], "number", hp)
-	end
- --armor
-	local arm_out = tonumber(hud.armor_out[name])
-	if not arm_out then arm_out = 0 end
-	local arm = tonumber(hud.armor[name])
-	if not arm then arm = 0 end
-	if arm_out ~= arm then
-		hud.armor_out[name] = arm
-		player:hud_change(armor_hud[name], "number", arm)
-		-- hide armor bar completely when there is none
-		if (not armor.def[name].count or armor.def[name].count == 0) and arm == 0 then
-		 player:hud_change(armor_hud_bg[name], "number", 0)
-		else
-		 player:hud_change(armor_hud_bg[name], "number", 20)
-		end
-	end
- --hunger
-	local h_out = tonumber(hud.hunger_out[name])
-	local h = tonumber(hud.hunger[name])
-	if h_out ~= h then
-		hud.hunger_out[name] = h
-		-- bar should not have more than 10 icons
-		if h>20 then h=20 end
-		player:hud_change(hunger_hud[name], "number", h)
-	end
-end
-
-hud.get_hunger = function(player)
-	local inv = player:get_inventory()
-	if not inv then return nil end
-	local hgp = inv:get_stack("hunger", 1):get_count()
-	if hgp == 0 then
-		hgp = 21
-		inv:set_stack("hunger", 1, ItemStack({name=":", count=hgp}))
-	else
-		hgp = hgp
-	end
-	return hgp-1
-end
-
-hud.set_hunger = function(player)
-	local inv = player:get_inventory()
-	local name = player:get_player_name()
-	local value = hud.hunger[name]
-	if not inv  or not value then return nil end
-	if value > 30 then value = 30 end
-	if value < 0 then value = 0 end
-	
-	inv:set_stack("hunger", 1, ItemStack({name=":", count=value+1}))
-
-	return true
-end
-
-minetest.register_on_joinplayer(function(player)
-	local name = player:get_player_name()
-	local inv = player:get_inventory()
-	inv:set_size("hunger",1)
-	hud.health[name] = player:get_hp()
-	if HUD_ENABLE_HUNGER then
-		hud.hunger[name] = hud.get_hunger(player)
-		hud.hunger_out[name] = hud.hunger[name]
-		hud.exhaustion[name] = 0
-	end
-	hud.armor[name] = 0
-	hud.armor_out[name] = 0
-	local air = player:get_breath()
-	hud.air[name] = air
-	minetest.after(0.5, function()
-		hide_builtin(player)
-		custom_hud(player)
-		if HUD_ENABLE_HUNGER then hud.set_hunger(player) end
-	end)
-end)
-
-minetest.register_on_respawnplayer(function(player)
-	-- reset player breath since the engine doesnt
-	player:set_breath(11)
-	-- reset hunger (and save)
-	local name = player:get_player_name()
-	hud.hunger[name] = 20
-	if HUD_ENABLE_HUNGER then
-		minetest.after(0.5, hud.set_hunger, player)
-		hud.exhaustion[name] = 0
-	end
-end)
-
-local main_timer = 0
-local timer = 0
-local timer2 = 0
-minetest.after(2.5, function()
-	minetest.register_globalstep(function(dtime)
-	 main_timer = main_timer + dtime
-	 timer = timer + dtime
-	 timer2 = timer2 + dtime
-		if main_timer > HUD_TICK or timer > 4 or timer2 > HUD_HUNGER_TICK then
-		 if main_timer > HUD_TICK then main_timer = 0 end
-		 for _,player in ipairs(minetest.get_connected_players()) do
-			local name = player:get_player_name()
-
-			-- only proceed if damage is enabled
-			if minetest.setting_getbool("enable_damage") then
-			 local h = tonumber(hud.hunger[name])
-			 local hp = player:get_hp()
-			 if HUD_ENABLE_HUNGER and timer > 4 then
-				-- heal player by 1 hp if not dead and saturation is > 15 (of 30)
-				if h > 15 and hp > 0 and hud.air[name] > 0 then
-					player:set_hp(hp+1)
-				-- or damage player by 1 hp if saturation is < 2 (of 30)
-				elseif h <= 1 and minetest.setting_getbool("enable_damage") then
-					if hp-1 >= 0 then player:set_hp(hp-1) end
-				end
-			 end
-			 -- lower saturation by 1 point after xx seconds
-			 if HUD_ENABLE_HUNGER and timer2 > HUD_HUNGER_TICK then
-				if h > 0 then
-					h = h-1
-					hud.hunger[name] = h
-					hud.set_hunger(player)
-				end
-			 end
-			 -- update current armor level
-			 if HUD_SHOW_ARMOR then hud.get_armor(player) end
-
-			 -- update all hud elements
-			 update_hud(player)
-			
-			 if HUD_ENABLE_HUNGER then
-				local controls = player:get_player_control()
-				-- Determine if the player is walking
-				if controls.up or controls.down or controls.left or controls.right then
-					hud.handle_node_actions(nil, nil, player)
-				end
-			 end
-			end
-		 end
-		
-		end
-		if timer > 4 then timer = 0 end
-		if timer2 > HUD_HUNGER_TICK then timer2 = 0 end
-	end)
-end)
diff --git a/legacy.lua b/legacy.lua
new file mode 100644
index 0000000..596ada3
--- /dev/null
+++ b/legacy.lua
@@ -0,0 +1,61 @@
+-- Armor
+function hud.set_armor()
+end
+
+if hud.show_armor then
+    local shields = minetest.get_modpath("shields") ~= nil
+    local armor_org_func = armor.update_armor
+
+    local function get_armor_lvl(def)
+	-- items/protection based display
+	local lvl = def.level or 0
+	local max = 63 -- full diamond armor
+	if shields then
+		max = 84.14 -- full diamond armor + diamond shield
+	end
+	-- TODO: is there a sane way to read out max values?
+	local ret = lvl/max
+	if ret > 1 then
+		ret = 1
+	end
+	
+	return tonumber(20 * ret)
+    end
+
+    function armor.update_armor(self, player)
+	armor_org_func(self, player)
+	local name = player:get_player_name()
+	local def = self.def
+	local armor_lvl = 0
+	if def[name] and def[name].level then
+		armor_lvl = get_armor_lvl(def[name])
+	end
+	hud.change_item(player, "armor", {number = armor_lvl})
+    end
+end
+
+-- Hunger related functions
+if not hud.show_hunger then
+    function hud.set_hunger()
+	hud.notify_hunger(1, true)
+    end
+
+    function hud.get_hunger()
+	hud.notify_hunger(1, true)
+    end
+
+    function hud.item_eat(hp_change, replace_with_item)
+    	return function(itemstack, user, pointed_thing)
+		hud.notify_hunger(1, true)
+		local func = minetest.item_eat(hp_change, replace_with_item)
+		return func(itemstack, user, pointed_thing)
+	end
+    end
+
+    function hud.save_hunger()
+	hud.notify_hunger(1, true)
+    end
+    function hud.load_hunger(player)
+	hud.notify_hunger(1, true)
+    end
+end