From 25a4eba8409b14fd7b897424f608348b37792d96 Mon Sep 17 00:00:00 2001
From: Pierre-Yves Rollo <dev@pyrollo.com>
Date: Sat, 13 Jan 2018 10:06:47 +0100
Subject: Version 1.0 - See README.md

---
 font_lib/tools/make_font_textures.sh | 111 +++++++++++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100755 font_lib/tools/make_font_textures.sh

(limited to 'font_lib/tools')

diff --git a/font_lib/tools/make_font_textures.sh b/font_lib/tools/make_font_textures.sh
new file mode 100755
index 0000000..ade2e32
--- /dev/null
+++ b/font_lib/tools/make_font_textures.sh
@@ -0,0 +1,111 @@
+#!/bin/bash
+
+# This program generates a bitmap font for font_lib mod for Minetest game.
+# (c) Andrzej Pieńkowski <pienkowski.andrzej@gmail.com>
+# (c) Pierre-Yves Rollo <dev@pyrollo.com>
+# License: GPL
+
+usage() {
+	echo "Usage: $0 fontfile fontname fontsize"
+	echo "fontfile: A TTF font file to use to create textures."
+	echo "fontname: The font name to be used in font_lib (should be simple, with no spaces)."
+	echo "fontsize: Font height to be rendered."
+}
+
+if [ $# -ne 3 ] 
+then
+	usage
+	exit 1
+fi
+
+fontfile=$1
+fontname=$2
+fontsize=$3
+
+if [ ! -r "$fontfile" ]
+then
+	echo "$fontfile not readable."
+	exit 1
+fi
+
+# check imagemagick
+hash convert &>/dev/null
+if [ $? -eq 1 ]; then
+	echo -e "Error: This program requires convert from ImageMagick! Please install it by typing 'sudo apt-get install imagemagick' in terminal."
+	abort=1
+fi
+
+# check ttx
+hash ttx &>/dev/null
+if [ $? -eq 1 ]; then
+	echo -e "Error: This program requires ttx from FontTools! Please install it by typing 'sudo apt-get install fonttools' in terminal."
+	abort=1
+fi
+
+if [ $abort ]
+then
+	exit 1
+fi
+
+generate() {
+	for i in $(seq $((0x$1)) $((0x$2)))
+	do
+		if echo "$codepoints" | grep -qi $(printf "0x%x" $i)
+		then
+		    hex=$(printf "%04x" $i)
+		    echo -e "Generating textures/font_${fontname}_$hex.png file for \"\\U$hex\" char."
+            if [[ "$hex" == "005c" ]] # Backslash char
+            then
+    			convert -background none -fill black -font "$fontfile" -pointsize $fontsize label:"\\\\" -colorspace gray -channel alpha -threshold 50% textures/font_${fontname}_$hex.png
+            else
+    			convert -background none -fill black -font "$fontfile" -pointsize $fontsize label:"$(echo -en "\\U$hex")" -colorspace gray -channel alpha -threshold 50% textures/font_${fontname}_$hex.png
+            fi
+ 		fi
+	done
+}
+
+mkdir textures
+
+# Reads all available code points in the font.
+codepoints=$(ttx -o - $fontfile | grep "<map code=" | cut -d \" -f 2)
+
+# Mandatory chars
+generate 0020 007f
+
+# generate space and null characters
+if [ ! -f "textures/font_${fontname}_0030.png" ]; then
+	echo "Error: Something wrong happened! Font was not generated!"
+	exit 1
+else
+	size=$(identify textures/font_${fontname}_0030.png | cut -d " " -f 3)
+	if ! [[ $fontHeight =~ $re ]] ; then
+		echo "Error: Something wrong happened! Generated files might be broken!"
+		exit 1
+	else
+        w=$(expr $(echo $size | cut -d x -f 1) - 1)
+        h=$(expr $(echo $size | cut -d x -f 2) - 1)
+        # Space char
+		convert -size $size xc:transparent -colorspace gray textures/font_${fontname}_0020.png
+        # Null char		
+        convert -size $size xc:transparent -colorspace gray -stroke black -fill transparent -strokewidth 1 -draw "rectangle 0,0 $w,$h" textures/font_${fontname}_0000.png
+	fi
+fi
+
+# Optional Unicode pages (see https://en.wikipedia.org/wiki/Unicode) :
+
+# 00a0-00ff Latin-1 Supplement (full)
+generate 00a0 00ff
+# 0100-017f Latin Extended-A (full)
+generate 0100 017f
+# 0370-03ff Greek (full)
+generate 0370 03ff
+# 0400-04ff Cyrilic (full)
+generate 0400 04ff
+# 2000-206f General Punctuation (Limited to Dashes)
+generate 2010 2015
+# 2000-206f General Punctuation (Limited to Quotes)
+generate 2018 201F
+# 20a0-20cf Currency Symbols (Limited to Euro symbol)
+generate 20ac 20ac
+
+
-- 
cgit v1.2.3


From a71ae8e01314d0653f785a022a898636cdf54424 Mon Sep 17 00:00:00 2001
From: Pierre-Yves Rollo <dev@pyrollo.com>
Date: Sat, 13 Jan 2018 12:38:55 +0100
Subject: Version 1.0

---
 README.md                               |  14 ++
 display_lib/README.md                   |   2 +-
 font_lib/API.md                         |  80 +++++++----
 font_lib/font_default.lua               |  12 --
 font_lib/init.lua                       | 244 ++++++++++++++++++++------------
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 font_lib/tools/make_font_lua.sh         |  12 +-
 ontime_clocks/README.md                 |   2 +-
 signs/README.md                         |   2 +-
 signs/nodes.lua                         |   6 +-
 signs_road/README.md                    |   2 +-
 signs_road/nodes.lua                    |  28 ++--
 steles/README.md                        |   2 +-
 steles/nodes.lua                        |   2 +-
 171 files changed, 251 insertions(+), 157 deletions(-)
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 delete mode 100644 font_lib/textures/font_default_00e0.png
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 delete mode 100644 font_lib/textures/font_default_00e5.png
 delete mode 100644 font_lib/textures/font_default_00e6.png
 delete mode 100644 font_lib/textures/font_default_00e7.png
 delete mode 100644 font_lib/textures/font_default_00e8.png
 delete mode 100644 font_lib/textures/font_default_00e9.png
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 delete mode 100644 font_lib/textures/font_default_00eb.png
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 delete mode 100644 font_lib/textures/font_default_00ed.png
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 delete mode 100644 font_lib/textures/font_default_00fd.png
 delete mode 100644 font_lib/textures/font_default_00ff.png

(limited to 'font_lib/tools')

diff --git a/README.md b/README.md
index 80fe3f3..def1949 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,20 @@ For more information, see the [forum topic](https://forum.minetest.net/viewtopic
 
 ## Changelog
 
+### 2018-01-13 (Version 1.0)
+
+- Switch to Epilepsy font by KREATIVE SOFTWARE
+
+- Add settings "default_font"
+
+- Add horizontal alignment
+
+- Add tool for creating font textures from .ttf font files
+
+- Fix UTF 8 to Unicode decoding 
+
+- Updated forum thread link in README.md
+
 ### 2017-12-19
 
 This change is a preparation to merge Andrzej Pieńkowski fork (apienk) : new font and support of UTF chars.
diff --git a/display_lib/README.md b/display_lib/README.md
index 3f8571a..88a39ee 100644
--- a/display_lib/README.md
+++ b/display_lib/README.md
@@ -10,5 +10,5 @@ This library's purpose is to ease creation of nodes with one or more displays on
 
 **API**: See [API.md](https://github.com/pyrollo/display_modpack/blob/master/display_lib/API.md) document please.
 
-For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?f=11&t=13563) at the Minetest forums.
+For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?t=19365) at the Minetest forums.
 
diff --git a/font_lib/API.md b/font_lib/API.md
index b8bc97a..1b79b55 100644
--- a/font_lib/API.md
+++ b/font_lib/API.md
@@ -1,6 +1,11 @@
 # Font Lib API
 This document describes Font Lib API. Font Lib creates textures for font display on entities.
 
+## Settings
+### default_font
+Name of the font to be used when no font is given. The font should be registered.
+If no default\_font given or if default\_font given but not registered, the first registered font will be used as default.
+
 ## Provided methods
 ### get\_text\_size
 **font\_lib.get\_text\_size(font\_name, text)**
@@ -8,9 +13,7 @@ This document describes Font Lib API. Font Lib creates textures for font display
 Computes size for a given font and text
 
 **font\_name**: Font name of registered font to use
-
 **text**: Text to be rendered
-
 **Returns**: rendered text width, height
 
 ### make\_line\_texture
@@ -19,36 +22,25 @@ Computes size for a given font and text
 Builds texture part for a text line
 
 **font\_name**: Font name of registered font to use
-
 **text**: Text to be rendered
-
 **texturew**: Width of the texture (extra text is not rendered)
-
 **x**: Starting x position in texture
-
 **y**: Vertical position of the line in texture
-
 **Returns**: Texture string
 
 ### make\_multiline\_texture
-**font\_lib.make\_multiline\_texture(font\_name, text, width, height, maxlines, valign, color)**
+**font\_lib.make\_multiline\_texture(font\_name, text, width, height, maxlines, halign, valign, color)**
 
 Builds texture for a multiline colored text
 
 **font\_name**: Font name of registered font to use
-
 **text**: Text to be rendered
-
 **texturew**: Width of the texture (extra text will be truncated)
-
 **textureh**: Height of the texture
-
 **maxlines**: Maximum number of lines
-
-**valign**: Vertical text align ("top", "bottom" or "center")
-
-**color**: Color of the text
-
+**halign**: Horizontal text align ("left", "right" or "center") (optional)
+**valign**: Vertical text align ("top", "bottom" or "center") (optional)
+**color**: Color of the text (optional)
 **Returns**: Texture string
 
 ### register\_font
@@ -57,34 +49,62 @@ Builds texture for a multiline colored text
 Registers a new font in font_lib.
 
 **font\_name**: Name of the font to register (this name will be used to address the font later)
+If registering different sizes of the same font, add size in the font name (e.g. times\_10,  times\_12...).
+**height**: Font height in pixels (all font textures should have the same height)
+**widths** : Array of character widths in pixels, indexed by UTF codepoints
 
-**height**: Height of the font in pixels (all font textures should have the same height)
-
-**widths** : An array containing the width of each font texture, indexed by its UTF code
+Font must have a char 0 which will be used to display any unknown char.
 
 All textures corresponding to the indexes in **widths** array should be present in textures directory with a name matching the pattern :
 
 **font\_<font\_name>_<utf\_code>.png**
 
-<font\_name>: Name of the font as given in the first argument
-
-<utf\_code>: UTF code of the char in 4 hexadecimal digits
+**<font\_name>**: Name of the font as given in the first argument
+**<utf\_code>**: UTF code of the char in 4 hexadecimal digits
 
 To ease that declaration, a shell is provided to build a <font\_name>.lua file from the texture files (see provided tools).
 
-### set\_fallback\_font
-**function font\_lib.set\_fallback\_font(font\_name)**
+## Provided tools
+
+Still in early stage of development, these tools are helpers to create font mods.
 
-Defines the fallback font to be used instead of given font if not registered.
+### make_font_texture.sh
 
-**font\_name**: Name of the font to be used as fallback font (has to be registered)
+This scripts takes a .ttf file as input and create one .png file per char, that can be used as font texture. Launch it from your future font mod directory. 
 
-## Provided tools
+__Advice__
+
+This script works much better with pixels font, providing the correct height. There is no antialiasing at all, vector fonts and bad heights gives very ugly results.
+
+__Syntax__
+
+**make\_font\_texture.sh <fontfile> <fontname> <fontsize>**
+
+**<fontfile>**: A TTF font file to use to create textures.
+**<fontname>**: The font name to be used in font_lib (should be simple, with no spaces).
+**<fontsize>**: Font height to be rendered.
 
 ### make_font_lua.sh
 
-Still in early stage of development.
+This script analyses textures in textures directory and creates a font\_<font\_name>.lua files with a call to register_font with images information. Launch it from your future font mod directory. 
+
+Once the font\_<font\_name>.lua created, it can be included by a init.lua file or directly renamed to init.lua if you are creating a simple font mod.
+
+__Syntax__
+
+**make\_font_lua.sh <fontname>**
+
+**<fontname>**: The font name to be used in font_lib (same as given to make\_font\_texture.sh)
+
+### An exemple generating a font mod
+
+    mkdir font_myfont
+    cd font_myfont
+    /<path_to_font_lib>/tools/make_font_texture.sh myfont.ttf myfont 12
+    /<path_to_font_lib>/tools/make_font_lua.sh myfont
+    mv font_myfont.lua init.lua
+
+
 
-This script analyses textures in textures directory and creates a font\_<font\_name>.lua files with a call to register_font with images information.
 
 
diff --git a/font_lib/font_default.lua b/font_lib/font_default.lua
deleted file mode 100644
index 2bd8093..0000000
--- a/font_lib/font_default.lua
+++ /dev/null
@@ -1,12 +0,0 @@
---[[
-
- generated by tools/make_font_lua.sh Thu Dec 21 21:45:53 CET 2017
-
---]]
-
-font_lib.register_font(
-	'default',
-	12,
-	{ [0]=6, [32]=4, [33]=3, [34]=4, [35]=7, [36]=6, [37]=8, [38]=8, [39]=3, [40]=4, [41]=4, [42]=4, [43]=7, [44]=3, [45]=5, [46]=3, [47]=5, [48]=6, [49]=4, [50]=6, [51]=6, [52]=7, [53]=6, [54]=6, [55]=6, [56]=6, [57]=6, [58]=3, [59]=3, [60]=5, [61]=6, [62]=5, [63]=6, [64]=11, [65]=8, [66]=7, [67]=8, [68]=7, [69]=6, [70]=6, [71]=8, [72]=7, [73]=3, [74]=6, [75]=8, [76]=6, [77]=10, [78]=8, [79]=8, [80]=7, [81]=8, [82]=7, [83]=7, [84]=7, [85]=7, [86]=8, [87]=11, [88]=8, [89]=9, [90]=7, [91]=4, [92]=5, [93]=4, [94]=5, [95]=7, [96]=3, [97]=7, [98]=6, [99]=5, [100]=6, [101]=6, [102]=5, [103]=6, [104]=6, [105]=3, [106]=3, [107]=7, [108]=3, [109]=9, [110]=6, [111]=6, [112]=6, [113]=6, [114]=5, [115]=6, [116]=4, [117]=6, [118]=6, [119]=8, [120]=7, [121]=6, [122]=6, [123]=5, [124]=3, [125]=5, [126]=6, [138]=6, [141]=3, [161]=3, [177]=6, [191]=6, [192]=8, [193]=8, [194]=8, [195]=8, [196]=8, [197]=8, [198]=10, [199]=8, [200]=6, [201]=6, [202]=6, [203]=6, [204]=3, [205]=3, [206]=3, [207]=3, [208]=8, [209]=8, [210]=8, [211]=8, [212]=8, [213]=8, [214]=8, [215]=6, [216]=8, [217]=7, [218]=7, [219]=7, [220]=7, [221]=9, [224]=7, [225]=7, [226]=7, [227]=7, [228]=7, [229]=7, [230]=9, [231]=5, [232]=6, [233]=6, [234]=6, [235]=6, [236]=3, [237]=3, [238]=3, [239]=3, [242]=6, [244]=6, [245]=6, [246]=6, [247]=6, [249]=6, [250]=6, [251]=6, [252]=6, [253]=6, [255]=6 }
-);
-
diff --git a/font_lib/init.lua b/font_lib/init.lua
index 9b10e76..76a6b38 100644
--- a/font_lib/init.lua
+++ b/font_lib/init.lua
@@ -18,11 +18,18 @@
 --]]
 
 -- Global variables
+-------------------
 
 font_lib = {}
-font_lib.path = minetest.get_modpath("font_lib")
+font_lib.name = minetest.get_current_modname()
+font_lib.path = minetest.get_modpath(font_lib.name)
 font_lib.registered_fonts = {}
 
+-- Local variables
+------------------
+
+local default_font = false
+
 -- Local functions
 ------------------
 
@@ -41,38 +48,41 @@ local function split_lines(text, maxlines)
 	end
 end
 
--- Returns next char, managing ascii and unicode plane 0 (0000-FFFF).
+-- Gets a default (settings or fist font)
 
-local function get_next_char(text, pos)
-	pos = pos + 1
-	local char = text:sub(pos, pos):byte()
+local function get_default_font()
+	-- First call
+	if default_font == false then
+		default_font = nil
 
-	-- 1 byte char
-	if char < 0x80 then
-	    return char, pos
-    end
+		-- First, try with settings
+		local settings_font = minetest.settings:get("default_font")
 
-	-- 4 bytes char not managed
-	if char >= 0xF0 then
-		pos = pos + 3
-		return 0, pos
-	end
-		
-	-- 3 bytes char not managed
-	if char >= 0xE0 then
-		pos = pos + 2
-		return 0, pos
-	end
-		
-	-- 2 bytes char (little endian)
-	if char >= 0xC2 then
-		pos = pos + 1
-		return (char - 0xC2) * 0x40 + text:sub(pos, pos):byte(), pos
-	end
+		if settings_font ~= nil and settings_font ~= "" then
+			default_font = font_lib.registered_fonts[settings_font]
 
-    -- Not an UTF char
-	return 0, pos
+			if default_font == nil then
+				minetest.log("warning", "Default font in settings (\""..
+				             settings_font.."\") is not registered.")
+			end
+		end
+
+		-- If failed, choose first font
+		if default_font == nil then
+			for _, font in pairs(font_lib.registered_fonts) do
+				default_font = font
+				break
+			end
+		end
 
+		-- Error, no font registered
+		if default_font == nil then
+			minetest.log("error",
+			             "No font registred, unable to choose a default font.")
+		end
+	end
+
+	return default_font
 end
 
 -- Returns font properties to be used according to font_name
@@ -81,7 +91,7 @@ local function get_font(font_name)
 	local font = font_lib.registered_fonts[font_name]
 
 	if font == nil then
-		local message 
+		local message
 
 		if font_name == nil then
 			message = "No font given"
@@ -89,17 +99,49 @@ local function get_font(font_name)
 			message = "Font \""..font_name.."\" unregistered"
 		end
 
-		if font_lib.fallback_font == nil then
-			minetest.log("error", message.." and no other font registered.")
-		else
-			minetest.log("info", message..", using font \""..font_lib.fallback_font.."\".")
-			font = font_lib.registered_fonts[font_lib.fallback_font]
+		font = get_default_font()
+
+		if font ~= nil then
+			minetest.log("info", message..", using font \""..font.name.."\".")
 		end
 	end
 
 	return font
 end
 
+-- Returns next char, managing ascii and unicode plane 0 (0000-FFFF).
+
+local function get_next_char(text, pos)
+
+	local msb = text:byte(pos)
+	-- 1 byte char, ascii equivalent codepoints
+	if msb < 0x80 then
+	    return msb, pos + 1
+    end
+
+	-- 4 bytes char not managed (Only 16 bits codepoints are managed)
+	if msb >= 0xF0 then
+		return 0, pos + 4
+	end
+
+	-- 3 bytes char
+	if msb >= 0xE0 then
+		return (msb - 0xE0) * 0x1000
+		       + text:byte(pos + 1) % 0x40 * 0x40
+		       + text:byte(pos + 2) % 0x40,
+		       pos + 3
+	end
+
+	-- 2 bytes char (little endian)
+	if msb >= 0xC2 then
+		return (msb - 0xC2) * 0x40 + text:byte(pos + 1),
+		       pos + 2
+	end
+
+    -- Not an UTF char
+	return 0, pos + 1
+end
+
 -- API functions
 ----------------
 
@@ -111,21 +153,23 @@ end
 function font_lib.get_text_size(font_name, text)
 	local char
 	local width = 0
-    local pos = 0
+    local pos = 1
 	local font = get_font(font_name)
 
 	if font == nil then
 		return 0, 0
 	else
-		while pos < #text do
+		while pos <= #text do
 			char, pos = get_next_char(text, pos)
-			-- Ignore chars with no texture
+			-- Replace chars with no texture by the NULL(0) char
 			if font.widths[char] ~= nil then
 				width = width + font.widths[char]
+			else
+				width = width + font.widths[0]
 			end
 		end
 	end
-	
+
 	return width, font.height
 end
 
@@ -137,32 +181,33 @@ end
 -- @param y Vertical position of the line in texture
 -- @return Texture string
 
---> ADD ALIGN
 function font_lib.make_line_texture(font_name, text, width, x, y)
 	local texture = ""
 	local char
-	local pos = 0
+	local pos = 1
 	local font = get_font(font_name)
 
 	if font ~= nil then
-		while pos < #text do
+		while pos <= #text do
 			char, pos = get_next_char(text, pos)
-	
-			-- Ignore chars with no texture
-			if font.widths[char] ~= nil then
-				-- Add image only if it is visible (at least partly)
-				if x + font.widths[char] >= 0 and x <= width then
-					texture = texture..
-						string.format(":%d,%d=font_%s_%04x.png", 
-						              x, y, font.name, char)
-				end
-				x = x + font.widths[char]
-            else
-                print(string.format("Missing char %d (%04x)",char,char))
+
+			-- Replace chars with no texture by the NULL(0) char
+			if font.widths[char] == nil then
+                print(string.format("["..font_lib.name
+                                    .."] Missing char %d (%04x)",char,char))
+                char = 0
 			end
+
+			-- Add image only if it is visible (at least partly)
+			if x + font.widths[char] >= 0 and x <= width then
+				texture = texture..
+					string.format(":%d,%d=font_%s_%04x.png",
+					              x, y, font.name, char)
+			end
+			x = x + font.widths[char]
 		end
 	end
-	
+
 	return texture
 end
 
@@ -172,43 +217,53 @@ end
 -- @param texturew Width of the texture (extra text will be truncated)
 -- @param textureh Height of the texture
 -- @param maxlines Maximum number of lines
--- @param valign Vertical text align ("top" or "center")
--- @param color Color of the text
+-- @param halign Horizontal text align ("left"/"center"/"right") (optional)
+-- @param valign Vertical text align ("top"/"center"/"bottom") (optional)
+-- @param color Color of the text (optional)
 -- @return Texture string
 
 function font_lib.make_multiline_texture(font_name, text, width, height, 
-                                         maxlines, valign, color)
+                                         maxlines, halign, valign, color)
 	local texture = ""
 	local lines = {}
     local textheight = 0
 	local y, w, h
-    
+
     for num, line in pairs(split_lines(text, maxlines)) do
         w, h = font_lib.get_text_size(font_name, line)
         lines[num] = { text = line, width = w, height = h, }
         textheight = textheight + h
     end
-    
+
     if #lines then
         if valign == "top" then
             y = 0
         elseif valign == "bottom" then
             y = height - textheight
-        else		
+        else
             y = (height - textheight) / 2
         end
     end
-    
+
 	for _, line in pairs(lines) do
-		texture = texture..
-			font_lib.make_line_texture(font_name, line.text, width,
-			(width - line.width) / 2, y)
+		if halign == "left" then
+			texture = texture..
+				font_lib.make_line_texture(font_name, line.text, width,
+				0, y)
+		elseif halign == "right" then
+			texture = texture..
+				font_lib.make_line_texture(font_name, line.text, width,
+				width - line.width, y)
+		else
+			texture = texture..
+				font_lib.make_line_texture(font_name, line.text, width,
+				(width - line.width) / 2, y)
+		end
 		y = y + line.height
 	end
 
 	texture = string.format("[combine:%dx%d", width, height)..texture
 	if color then texture = texture.."^[colorize:"..color end
-
 	return texture
 end
 
@@ -217,40 +272,48 @@ end
 -- font_<name>_<code>.png
 -- <name> : name of the font
 -- <code> : 4 digit hexadecimal unicode of the char
--- If registering different sizes, add size in the font name (e.g. times_10, times_12...)
+-- @param font_name Name of the font to register
+-- If registering different sizes of the same font, add size in the font name
+-- (e.g. times_10, times_12...).
 -- @param height Font height in pixels
--- @param widths Array of character widths in pixel, indexed by unicode number.
+-- @param widths Array of character widths in pixels, indexed by UTF codepoints
 
 function font_lib.register_font(font_name, height, widths)
+
 	if font_lib.registered_fonts[font_name] ~= nil then
 		minetest.log("error", "Font \""..font_name.."\" already registered.")
 		return
 	end
-	
-	font_lib.registered_fonts[font_name] = 
-		{ name = font_name, height = height, widths = widths }
-	
-	-- If no fallback font, set it (so, first font registered will be the default fallback font)
-	if font_lib.fallback_font == nil then
-		font_lib.fallback_font = font_name
-	end	
-end
 
---- Define the fallback font
--- This font will be used instead of given font if not registered.
--- @param font_name Name of the font to be used as fallback font (has to be registered).
+	if height == nil or height <= 0 then
+		minetest.log("error", "Font \""..font_name..
+		             "\" must have a positive height.")
+		return
+	end
 
-function font_lib.set_fallback_font(font_name)
-	if font_lib.registered_fonts[font_name] == nil then
-		minetest.log("error", "Fallback font \""..font_name.."\" not registered.")
-	else
-		font_lib.fallback_font = font_name
+	if type(widths) ~= "table" then
+		minetest.log("error", "Font \""..font_name..
+		             "\" must have a widths array.")
+		return
 	end
+
+	if widths[0] == nil then
+		minetest.log("error", "Font \""..font_name..
+		             "\" must have a char with codepoint 0 (=unknown char).")
+		return
+	end
+
+	font_lib.registered_fonts[font_name] =
+		{ name = font_name, height = height, widths = widths }
+
+	-- Force to choose again default font
+	-- (allows use of fonts registered after start)
+	default_font = false
 end
 
 --- Standard on_display_update entity callback.
--- Node should have a corresponding display_entity with size, resolution and maxlines fields and 
--- optionally valign and color fields
+-- Node should have a corresponding display_entity with size, resolution and 
+-- maxlines fields and optionally halign, valign and color fields
 -- @param pos Node position
 -- @param objref Object reference of entity
 
@@ -262,15 +325,16 @@ function font_lib.on_display_update(pos, objref)
 
 	if entity and ndef.display_entities[entity.name] then
 		local def = ndef.display_entities[entity.name]
+		local font = get_font(def.font_name)
 
 		objref:set_properties({ 
 			textures={font_lib.make_multiline_texture(
-				def.font_name, text, def.size.x*def.resolution.x, def.size.y*def.resolution.y, 
-				def.maxlines, def.valign, def.color)}, 
+				def.font_name, text,
+				def.size.x * def.resolution.x * font.height,
+				def.size.y * def.resolution.y * font.height,
+				def.maxlines, def.halign, def.valign, def.color)},
 			visual_size = def.size
 		})
 	end
 end
 
-dofile(font_lib.path.."/font_default.lua")
-
diff --git a/font_lib/textures/font_default_0000.png b/font_lib/textures/font_default_0000.png
deleted file mode 100644
index 65e43a7..0000000
Binary files a/font_lib/textures/font_default_0000.png and /dev/null differ
diff --git a/font_lib/textures/font_default_0020.png b/font_lib/textures/font_default_0020.png
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diff --git a/font_lib/textures/font_default_00fb.png b/font_lib/textures/font_default_00fb.png
deleted file mode 100644
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diff --git a/font_lib/textures/font_default_00fc.png b/font_lib/textures/font_default_00fc.png
deleted file mode 100644
index c7deddd..0000000
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diff --git a/font_lib/textures/font_default_00fd.png b/font_lib/textures/font_default_00fd.png
deleted file mode 100644
index b6f45f9..0000000
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diff --git a/font_lib/textures/font_default_00ff.png b/font_lib/textures/font_default_00ff.png
deleted file mode 100644
index d182a29..0000000
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diff --git a/font_lib/tools/make_font_lua.sh b/font_lib/tools/make_font_lua.sh
index 4559341..607ff95 100755
--- a/font_lib/tools/make_font_lua.sh
+++ b/font_lib/tools/make_font_lua.sh
@@ -1,9 +1,9 @@
 #!/bin/bash
 
-scriptname=$0
+scriptname=$(basename $0)
 identify="identify"
 
-font_name=default
+font_name=$1
 
 for f in textures/font_${font_name}_????.png
 do
@@ -46,3 +46,11 @@ font_lib.register_font(
 );
 " > font_$font_name.lua
 
+if grep -q font_lib depends.txt &>/dev/null
+then
+	echo "font_lib already in depends.txt."
+else
+	echo "adding font_lib to depends.txt."
+	echo "font_lib" >> depends.txt
+fi
+
diff --git a/ontime_clocks/README.md b/ontime_clocks/README.md
index 72c94db..2254a43 100644
--- a/ontime_clocks/README.md
+++ b/ontime_clocks/README.md
@@ -2,7 +2,7 @@
 
 This mod provides clocks that display real ingame time.
 
-For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?f=11&t=13563) at the Minetest forums.
+For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?t=19365) at the Minetest forums.
 
 **Dependancies**: display_lib, default
 
diff --git a/signs/README.md b/signs/README.md
index 9e678de..0282d2e 100644
--- a/signs/README.md
+++ b/signs/README.md
@@ -2,7 +2,7 @@
 
 This mod provides various signs with text display. Text is locked if area is protected.
 
-For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?f=11&t=13563) at the Minetest forums.
+For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?t=19365) at the Minetest forums.
 
 **Dependancies**: default, display\_lib, font\_lib
 
diff --git a/signs/nodes.lua b/signs/nodes.lua
index 2b8ab66..926d6e3 100644
--- a/signs/nodes.lua
+++ b/signs/nodes.lua
@@ -104,7 +104,7 @@ local models = {
 		entity_fields = {
             right = -3/32,
 			size = { x = 12/16, y = 6/16 },
-			resolution = { x = 112, y = 64 },
+			resolution = { x = 9, y = 5 },
 			maxlines = 2,
 			color="#000",
 		},
@@ -127,7 +127,7 @@ local models = {
 		entity_fields = {
             right = 3/32,
 			size = { x = 12/16, y = 6/16 },
-			resolution = { x = 112, y = 64 },
+			resolution = { x = 9, y = 5 },
 			maxlines = 2,
 			color = "#000",
 		},
@@ -149,7 +149,7 @@ local models = {
 		width = 26/32,
 		height = 30/32,
 		entity_fields = {
-			resolution = { x = 144, y = 64 },
+			resolution = { x = 11, y = 5 },
 			maxlines = 1,
 			color="#000",
 			valign="top",
diff --git a/signs_road/README.md b/signs_road/README.md
index 2343ea9..0a2f685 100644
--- a/signs_road/README.md
+++ b/signs_road/README.md
@@ -2,7 +2,7 @@
 
 This mod provides road signs with text display. Text is locked if area is protected.
 
-For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?f=11&t=13563) at the Minetest forums.
+For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?t=19365) at the Minetest forums.
 
 **Dependancies**: default, display\_lib, font\_lib, signs
 
diff --git a/signs_road/nodes.lua b/signs_road/nodes.lua
index c5d92b6..b167db8 100644
--- a/signs_road/nodes.lua
+++ b/signs_road/nodes.lua
@@ -27,7 +27,7 @@ local models = {
 		width = 14/16,
 		height = 12/16,
 		entity_fields = {
-			resolution = { x = 144, y = 64 },
+			resolution = { x = 11, y = 5.5 },
 			maxlines = 3,
 			color = "#fff",
 		},
@@ -44,7 +44,7 @@ local models = {
 		width = 64/16,
 		height = 12/16,
 		entity_fields = {
-			resolution = { x = 30, y = 20 },
+			resolution = { x = 2.5, y = 1.5 },
 			maxlines = 1,
 			color = "#000",
 		},
@@ -63,7 +63,7 @@ local models = {
 		width = 1,
 		height = 7/16,
 		entity_fields = {
-			resolution = { x = 96, y = 64 },
+			resolution = { x = 8, y = 4 },
 			maxlines = 1,
 			color = "#000",
 		},
@@ -80,7 +80,7 @@ local models = {
 		width = 1,
 		height = 7/16,
 		entity_fields = {
-			resolution = { x = 96, y = 64 },
+			resolution = { x = 9, y = 5.5 },
 			maxlines = 2,
 			color = "#000",
 		},
@@ -97,7 +97,7 @@ local models = {
 		width = 1,
 		height = 7/16,
 		entity_fields = {
-			resolution = { x = 96, y = 64 },
+			resolution = { x = 9, y = 5.5 },
 			maxlines = 2,
 			color = "#fff",
 		},
@@ -114,7 +114,7 @@ local models = {
 		width = 1,
 		height = 7/16,
 		entity_fields = {
-			resolution = { x = 96, y = 64 },
+			resolution = { x = 9, y = 5.5 },
 			maxlines = 2,
 			color = "#000",
 		},
@@ -131,7 +131,7 @@ local models = {
 		width = 1,
 		height = 0.5,
 		entity_fields = {
-            resolution = { x = 96, y = 64 },
+            resolution = { x = 7, y = 5 },
 			maxlines = 1,
 			color = "#000",
 		},
@@ -151,7 +151,7 @@ local models = {
 		width = 1,
 		height = 0.5,
 		entity_fields = {
-			resolution = { x = 96, y = 64 },
+			resolution = { x = 7, y = 5 },
 			maxlines = 1,
 			color = "#000",
 		},
@@ -176,7 +176,7 @@ local models = {
 		entity_fields = {
             right = -3/32,
 			size = { x = 12/16, y = 6/16 },
-			resolution = { x = 112, y = 64 },
+			resolution =  { x = 9, y = 5.5 },
 			maxlines = 2,
 			color = "#fff",
 		},
@@ -200,7 +200,7 @@ local models = {
 		entity_fields = {
             right = 3/32,
 			size = { x = 12/16, y = 6/16 },
-			resolution = { x = 112, y = 64 },
+			resolution = { x = 9, y = 5.5 },
 			maxlines = 2,
 			color="#fff",
 		},
@@ -226,7 +226,7 @@ local models = {
 		entity_fields = {
             right = -3/32,
 			size = { x = 12/16, y = 6/16 },
-			resolution = { x = 112, y = 64 },
+			resolution = { x = 9, y = 5.5 },
 			maxlines = 2,
 			color = "#000",
 		},
@@ -250,7 +250,7 @@ local models = {
 		entity_fields = {
             right = 3/32,
 			size = { x = 12/16, y = 6/16 },
-			resolution = { x = 112, y = 64 },
+			resolution = { x = 9, y = 5.5 },
 			maxlines = 2,
 			color = "#000",
 		},
@@ -276,7 +276,7 @@ local models = {
 		entity_fields = {
             right = -3/32,
 			size = { x = 12/16, y = 6/16 },
-			resolution = { x = 112, y = 64 },
+			resolution = { x = 9, y = 5.5 },
 			maxlines = 2,
 			color = "#000",
 		},
@@ -300,7 +300,7 @@ local models = {
 		entity_fields = {
             right = 3/32,
 			size = { x = 12/16, y = 6/16 },
-			resolution = { x = 112, y = 64 },
+			resolution = { x = 9, y = 5.5 },
 			maxlines = 2,
 			color = "#000",
 		},
diff --git a/steles/README.md b/steles/README.md
index e83a6af..bc14b53 100644
--- a/steles/README.md
+++ b/steles/README.md
@@ -2,7 +2,7 @@
 
 This mod provides stone steles with text display. Text is locked if area is protected.
 
-For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?f=11&t=13563) at the Minetest forums.
+For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?t=19365) at the Minetest forums.
 
 **Dependancies**: default, display\_lib, font\_lib, technic?
 
diff --git a/steles/nodes.lua b/steles/nodes.lua
index 39eb9ee..87f4e9b 100644
--- a/steles/nodes.lua
+++ b/steles/nodes.lua
@@ -61,7 +61,7 @@ for i, material in ipairs(steles.materials) do
 						on_display_update = font_lib.on_display_update,
 						depth = -2/16-0.001, height = 2/16,
 						size = { x = 14/16, y = 12/16 },
-						resolution = { x = 144, y = 64 },
+						resolution = { x = 11, y = 5 },
 						maxlines = 3,
 				},
 			},
-- 
cgit v1.2.3


From f3970f641eb60bf92492b6715084273cc1bceb74 Mon Sep 17 00:00:00 2001
From: Thomas--S <info@thomas-stangl.de>
Date: Thu, 1 Feb 2018 16:54:55 +0100
Subject: Seperate signs API from signs definitions

Change modnames from *_lib to *_api
---
 README.md                            |   5 +-
 display_api/API.md                   |  91 ++++++++++
 display_api/LICENSE.txt              | 166 +++++++++++++++++
 display_api/README.md                |  14 ++
 display_api/copyright.txt            |   4 +
 display_api/depends.txt              |   0
 display_api/init.lua                 | 242 ++++++++++++++++++++++++
 display_lib/API.md                   |  91 ----------
 display_lib/LICENSE.txt              | 166 -----------------
 display_lib/README.md                |  14 --
 display_lib/copyright.txt            |   4 -
 display_lib/depends.txt              |   0
 display_lib/init.lua                 | 240 ------------------------
 font_api/API.md                      | 110 +++++++++++
 font_api/LICENSE.txt                 | 166 +++++++++++++++++
 font_api/README.md                   |  14 ++
 font_api/copyright.txt               |   3 +
 font_api/depends.txt                 |   0
 font_api/init.lua                    | 343 +++++++++++++++++++++++++++++++++++
 font_api/settingtypes.txt            |   1 +
 font_api/tools/make_font_lua.sh      |  56 ++++++
 font_api/tools/make_font_textures.sh | 111 ++++++++++++
 font_epilepsy/README.md              |   4 +-
 font_epilepsy/depends.txt            |   2 +-
 font_epilepsy/init.lua               |   2 +-
 font_lib/API.md                      | 110 -----------
 font_lib/LICENSE.txt                 | 166 -----------------
 font_lib/README.md                   |  14 --
 font_lib/copyright.txt               |   3 -
 font_lib/depends.txt                 |   0
 font_lib/init.lua                    | 340 ----------------------------------
 font_lib/settingtypes.txt            |   1 -
 font_lib/tools/make_font_lua.sh      |  56 ------
 font_lib/tools/make_font_textures.sh | 111 ------------
 ontime_clocks/README.md              |   2 +-
 ontime_clocks/common.lua             |   2 +-
 ontime_clocks/depends.txt            |   2 +-
 ontime_clocks/nodes.lua              |  72 ++++----
 signs/common.lua                     | 173 +++---------------
 signs/compatibility.lua              |   6 +-
 signs/depends.txt                    |   5 +-
 signs/nodes.lua                      |  28 +--
 signs_api/LICENSE.txt                | 166 +++++++++++++++++
 signs_api/README.md                  |  29 +++
 signs_api/common.lua                 | 188 +++++++++++++++++++
 signs_api/copyright.txt              |  10 +
 signs_api/depends.txt                |   4 +
 signs_api/init.lua                   |  33 ++++
 signs_api/intllib.lua                |  45 +++++
 signs_api/locale/fr.po               |  49 +++++
 signs_api/locale/ms.po               |  46 +++++
 signs_api/locale/template.pot        |  31 ++++
 signs_api/tools/updatepo.sh          |  25 +++
 signs_road/compatibility.lua         |   6 +-
 signs_road/depends.txt               |   6 +-
 signs_road/nodes.lua                 |  48 ++---
 steles/depends.txt                   |   4 +-
 steles/nodes.lua                     |  20 +-
 58 files changed, 2077 insertions(+), 1573 deletions(-)
 create mode 100644 display_api/API.md
 create mode 100644 display_api/LICENSE.txt
 create mode 100644 display_api/README.md
 create mode 100644 display_api/copyright.txt
 create mode 100644 display_api/depends.txt
 create mode 100644 display_api/init.lua
 delete mode 100644 display_lib/API.md
 delete mode 100644 display_lib/LICENSE.txt
 delete mode 100644 display_lib/README.md
 delete mode 100644 display_lib/copyright.txt
 delete mode 100644 display_lib/depends.txt
 delete mode 100644 display_lib/init.lua
 create mode 100644 font_api/API.md
 create mode 100644 font_api/LICENSE.txt
 create mode 100644 font_api/README.md
 create mode 100644 font_api/copyright.txt
 create mode 100644 font_api/depends.txt
 create mode 100644 font_api/init.lua
 create mode 100644 font_api/settingtypes.txt
 create mode 100755 font_api/tools/make_font_lua.sh
 create mode 100755 font_api/tools/make_font_textures.sh
 delete mode 100644 font_lib/API.md
 delete mode 100644 font_lib/LICENSE.txt
 delete mode 100644 font_lib/README.md
 delete mode 100644 font_lib/copyright.txt
 delete mode 100644 font_lib/depends.txt
 delete mode 100644 font_lib/init.lua
 delete mode 100644 font_lib/settingtypes.txt
 delete mode 100755 font_lib/tools/make_font_lua.sh
 delete mode 100755 font_lib/tools/make_font_textures.sh
 create mode 100644 signs_api/LICENSE.txt
 create mode 100644 signs_api/README.md
 create mode 100644 signs_api/common.lua
 create mode 100644 signs_api/copyright.txt
 create mode 100644 signs_api/depends.txt
 create mode 100644 signs_api/init.lua
 create mode 100644 signs_api/intllib.lua
 create mode 100644 signs_api/locale/fr.po
 create mode 100644 signs_api/locale/ms.po
 create mode 100644 signs_api/locale/template.pot
 create mode 100755 signs_api/tools/updatepo.sh

(limited to 'font_lib/tools')

diff --git a/README.md b/README.md
index def1949..f7f8146 100644
--- a/README.md
+++ b/README.md
@@ -2,9 +2,10 @@
 
 This modpack provides mods with dynamic display. Mods are :
 
-- **display_lib**: A library for adding display entities to nodes;
-- **font_lib**: A library for displaying fonts on entities;
+- **display_api**: A library for adding display entities to nodes;
+- **font_api**: A library for displaying fonts on entities;
 - **ontime_clocks**: A mod providing clocks which display the ingame time;
+- **signs_api**: A library for the easy creation of signs;
 - **signs**: A mod providing signs and direction signs displaying text;
 - **signs_road**: A mod providing road signs displaying text;
 - **steles**: A mod providing stone steles with text;
diff --git a/display_api/API.md b/display_api/API.md
new file mode 100644
index 0000000..b133c8a
--- /dev/null
+++ b/display_api/API.md
@@ -0,0 +1,91 @@
+# Display Lib API
+This document describes Display Lib API. Display Lib allows to add a dynamic display on a node. Display Lib limits node rotations. For wallmounted, only vertical positionning is available, and for facedir, only first four position are availabel (those with default axis).
+
+## Provided methods
+### update\_entities
+**display\_lib.update\_entities(pos)**
+
+This method triggers entities update for the display node at pos. Actual entity update is made by `on_display_update` callback associated to the entity.
+
+`pos`: Position of the node
+### register\_display\_entity
+**display\_lib.register\_display\_entity(entity_name)**
+
+This is a helper to register entities used for display. 
+
+`entity_name`: Name of the entity to register.
+## Provided callback implementations
+### on_place
+**display\_lib.on\_place(itemstack, placer, pointed\_thing)**
+
+`on_place` node callback implementation. Display nodes should have this callback (avoid placement of horizontal display node).
+### on_construct
+**display\_lib.on\_construct(pos)**
+
+`on_construct` node callback implementation. Display nodes should have this callback (creates, places and updates display entities on node construction).
+### on_destruct
+**display\_lib.on_destruct(pos)**
+
+`on_destruct` node callback implementation. Display nodes should have this callback (removes display entities on node destruction). 
+### on_rotate
+**display\_lib.on\_rotate(pos, node, user, mode, new_param2)**
+
+`on_rotate` node callback implementation. Display nodes should have this callback (restricts rotations and rotates display entities associated with node).
+### on_activate
+**display\_lib.on_activate(entity, staticdata)**
+
+`On_activate` entity callback implementation for display entities. No need of this method if display entities have been registered using `register_display_entity` (callback is already set). 
+
+## Howto register a display node
+* Register display entities with `register_display_entity`
+
+* Register node with :
+  - `on_place`, `on_construct`, `on_destruct` and `on_rotate` callbacks using display_api callbacks.
+  
+  - `display_modpack_node` group. This will make this node have their entities updated as soon as the mapblock is loaded (Useful after /clearobjects).
+  
+  - a `display_entities` field in node definition containing a entity name indexed table. See below for description of each display_entities fields.
+
+### Display_entities fields
+`on_display_update` is a callback in charge of setting up entity texture. If not set, entity will have no texture and will be displayed as unknown item.
+
+`depth`, `right` and `heigh` : Entity position regarding to node facedir/wallmounted main axis. Values for these fields can be any number between -0.5 and 0.5 (default value is 0). Position 0,0,0 is the center of the node. `depth` goes from front (-0.5) to rear (0.5), `height` goes from bottom (-0.5) to top (0.5) and `right` goes from left (-0.5) to right (0.5).
+
+In order to avoid flickering text, it's better to have text a little behind node surface. A good spacing value is given by `display_api.entity_spacing` variable.
+
+### Example
+
+	display_api.register_display_entity("mymod:entity1")
+	display_api.register_display_entity("mymod:entity2")
+
+	function my_display_update1(pos, objref) 
+		objref:set_properties({ textures= {"mytexture1.png"},
+		                        visual_size = {x=1, y=1} })
+	end
+
+	function my_display_update2(pos, objref) 
+		objref:set_properties({ textures= {"mytexture2.png"},
+		                        visual_size = {x=1, y=1} })
+	end
+
+	minetest.register_node("mymod:test_display_node", {
+		...
+		paramtype2 = "facedir",
+		...
+		groups = { display_modpack_node = 1, ... },
+		...
+		display_entities = {
+			["mymod:entity1"] = { 
+				depth = 0.3,
+				on_display_update = my_display_update1 },
+			["mymod:entity1"] = { 
+				depth = 0.2, height = 0.1,
+				on_display_update = my_display_update2 },
+			},
+		...
+		on_place = display_api.on_place,
+		on_construct = display_api.on_construct,
+		on_destruct = display_api.on_destruct,
+		on_rotate = display_api.on_rotate,
+		...
+	})
diff --git a/display_api/LICENSE.txt b/display_api/LICENSE.txt
new file mode 100644
index 0000000..341c30b
--- /dev/null
+++ b/display_api/LICENSE.txt
@@ -0,0 +1,166 @@
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
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+based on the Application, and not on the Linked Version.
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+
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+   b) under the GNU GPL, with none of the additional permissions of
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diff --git a/display_api/README.md b/display_api/README.md
new file mode 100644
index 0000000..f51996d
--- /dev/null
+++ b/display_api/README.md
@@ -0,0 +1,14 @@
+# Display Lib
+
+This library's purpose is to ease creation of nodes with one or more displays on sides. For example, signs and clocks. Display can be dynamic and/or different for each node instance.
+
+**Limitations**: This lib uses entities to draw display. This means display has to be vertical. So display nodes rotation are limitated to "upside up" positions.
+
+**Dependancies**:default
+
+**License**: LPGL
+
+**API**: See [API.md](https://github.com/pyrollo/display_modpack/blob/master/display_api/API.md) document please.
+
+For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?t=19365) at the Minetest forums.
+
diff --git a/display_api/copyright.txt b/display_api/copyright.txt
new file mode 100644
index 0000000..e3a15e9
--- /dev/null
+++ b/display_api/copyright.txt
@@ -0,0 +1,4 @@
+Code by Pierre-Yves Rollo (pyrollo)
+Contributors:
+(gpcf): Compatibility with signs lib
+(Thomas--S): Fix /clearobjects bug
diff --git a/display_api/depends.txt b/display_api/depends.txt
new file mode 100644
index 0000000..e69de29
diff --git a/display_api/init.lua b/display_api/init.lua
new file mode 100644
index 0000000..7439119
--- /dev/null
+++ b/display_api/init.lua
@@ -0,0 +1,242 @@
+--[[
+    display_api mod for Minetest - Library to add dynamic display
+    capabilities to nodes
+    (c) Pierre-Yves Rollo
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+--]]
+
+display_api = {}
+
+-- Prefered gap between node and entity
+-- Entity positionment is up to mods but it is a good practice to use this
+-- variable as spacing between entity and node
+display_api.entity_spacing = 0.002
+
+-- Miscelaneous values depending on wallmounted param2
+local wallmounted_values = {
+	[0]={dx=0,  dz=0,  rx=0,  rz=0,  yaw=0,          rotate=0}, -- Should never be used
+		{dx=0,  dz=0,  rx=0,  rz=0,  yaw=0,          rotate=1}, -- Should never be used
+		{dx=-1, dz=0,  rx=0,  rz=-1, yaw=-math.pi/2, rotate=5},
+		{dx=1,  dz=0,  rx=0,  rz=1,  yaw=math.pi/2,  rotate=4},
+		{dx=0,  dz=-1, rx=1,  rz=0,  yaw=0,          rotate=2},
+		{dx=0,  dz=1,  rx=-1, rz=0,  yaw=math.pi,    rotate=3}
+}
+
+-- Miscelaneous values depending on facedir param2
+local facedir_values = {
+	[0]={dx=0,  dz=-1, rx=1,  rz=0,  yaw=0,          rotate=1},
+	    {dx=-1, dz=0,  rx=0,  rz=-1, yaw=-math.pi/2, rotate=2},
+	    {dx=0,  dz=1,  rx=-1, rz=0,  yaw=math.pi,    rotate=3},
+		{dx=1,  dz=0,  rx=0,  rz=1,  yaw=math.pi/2,  rotate=0},
+	    -- Forbiden values :
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	}
+
+-- dx/dy = depth vector, rx/ly = right vector, yaw = yaw of entity,
+-- rotate = next facedir/wallmount on rotate
+
+local function get_values(node)
+	local ndef = minetest.registered_nodes[node.name]
+
+	if ndef then
+		if ndef.paramtype2 == "wallmounted" then
+			return wallmounted_values[node.param2]
+		end
+		if ndef.paramtype2 == "facedir" then
+			return facedir_values[node.param2]
+		end
+	end
+end
+
+--- Gets the display entities attached with a node. Removes extra ones
+local function get_entities(pos)
+	local objrefs = {}
+	local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
+	if ndef and ndef.display_entities then
+		for _, objref in ipairs(minetest.get_objects_inside_radius(pos, 0.5)) do
+			local entity = objref:get_luaentity()
+		    if entity and ndef.display_entities[entity.name] then
+				if objrefs[entity.name] then
+				    objref:remove()
+				else
+					objrefs[entity.name] = objref
+				end
+		    end
+		end
+	end
+	return objrefs
+end
+
+local function clip_pos_prop(posprop)
+	if posprop then
+		return math.max(-0.5, math.min(0.5, posprop))
+	else
+		return 0
+	end
+end
+
+--- (Create and) place display entities according to the node orientation
+local function place_entities(pos)
+	local node = minetest.get_node(pos)
+	local ndef = minetest.registered_nodes[node.name]
+	local values = get_values(node)
+	local objrefs = get_entities(pos)
+
+	if values and ndef and ndef.display_entities then
+
+		for entity_name, props in pairs(ndef.display_entities) do
+			local depth = clip_pos_prop(props.depth)
+			local height = clip_pos_prop(props.height)
+			local right = clip_pos_prop(props.right)
+			if not objrefs[entity_name] then
+				objrefs[entity_name] = minetest.add_entity(pos, entity_name)
+			end
+
+			objrefs[entity_name]:setpos({
+				x = pos.x - values.dx * depth + values.rx * right,
+				y = pos.y + height,
+				z = pos.z - values.dz * depth + values.rz * right})
+
+			objrefs[entity_name]:setyaw(values.yaw)
+		end
+	end
+	return objrefs
+end
+
+--- Call on_display_update callback of a node for one of its display entities
+local function call_node_on_display_update(pos, objref)
+	local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
+	local entity = objref:get_luaentity()
+	if ndef and ndef.display_entities and entity and ndef.display_entities[entity.name] then
+		ndef.display_entities[entity.name].on_display_update(pos, objref)
+	end	
+end
+
+--- Force entity update
+function display_api.update_entities(pos)
+	local objrefs = place_entities(pos)
+	for _, objref in pairs(objrefs) do
+		call_node_on_display_update(pos, objref)
+    end
+end
+
+--- On_activate callback for display_api entities. Calls on_display_update callbacks
+--- of corresponding node for each entity.
+function display_api.on_activate(entity, staticdata)
+   if entity then
+      entity.object:set_armor_groups({immortal=1})
+      call_node_on_display_update(entity.object:getpos(), entity.object)
+   end
+end
+
+--- On_place callback for display_api items. Does nothing more than preventing item
+--- from being placed on ceiling or ground 
+function display_api.on_place(itemstack, placer, pointed_thing)
+	local ndef = itemstack:get_definition()
+	local above = pointed_thing.above
+	local under = pointed_thing.under
+	local dir = {x = under.x - above.x,
+				 y = under.y - above.y,
+				 z = under.z - above.z}
+
+	if ndef then
+		if ndef.paramtype2 == "wallmounted" then
+
+			local wdir = minetest.dir_to_wallmounted(dir)
+
+			if wdir == 0 or wdir == 1 then
+				dir = placer:get_look_dir()
+				dir.y = 0
+				wdir = minetest.dir_to_wallmounted(dir)
+			end
+
+			return minetest.item_place(itemstack, placer, pointed_thing, wdir)
+		else
+			return minetest.item_place(itemstack, placer, pointed_thing, minetest.dir_to_facedir(dir))
+		end
+	end
+
+end
+
+--- On_construct callback for display_api items. Creates entities and update them.
+function display_api.on_construct(pos)
+	display_api.update_entities(pos)
+end
+
+--- On_destruct callback for display_api items. Removes entities.
+function display_api.on_destruct(pos)
+	local objrefs = get_entities(pos)
+	
+	for _, objref in pairs(objrefs) do 
+		objref:remove()
+	end
+end
+
+-- On_rotate (screwdriver) callback for display_api items. Prevents axis rotation and reorients entities.
+function display_api.on_rotate(pos, node, user, mode, new_param2)
+	if mode ~= 1 then return false end
+
+	local values = get_values(node)
+
+	if values then
+		minetest.swap_node(pos, {name = node.name, param1 = node.param1, param2 = values.rotate})
+		place_entities(pos)
+		return true
+	else
+		return false
+	end
+end
+
+--- Creates display entity with some fields and the on_activate callback
+function display_api.register_display_entity(entity_name)
+	if not minetest.registered_entity then
+		minetest.register_entity(':'..entity_name, {
+			collisionbox = { 0, 0, 0, 0, 0, 0 },
+			visual = "upright_sprite",
+			textures = {},
+			on_activate = display_api.on_activate,
+		})
+	end
+end
+
+minetest.register_lbm({
+	label = "Update display_api entities",
+	name = "display_api:update_entities",
+	run_at_every_load = true,
+	nodenames = {"group:display_modpack_node", "group:display_lib_node"},
+	action = function(pos, node) display_api.update_entities(pos) end,
+})
+
+-- Compatibility
+display_lib = display_api
\ No newline at end of file
diff --git a/display_lib/API.md b/display_lib/API.md
deleted file mode 100644
index 5c05999..0000000
--- a/display_lib/API.md
+++ /dev/null
@@ -1,91 +0,0 @@
-# Display Lib API
-This document describes Display Lib API. Display Lib allows to add a dynamic display on a node. Display Lib limits node rotations. For wallmounted, only vertical positionning is available, and for facedir, only first four position are availabel (those with default axis).
-
-## Provided methods
-### update\_entities
-**display\_lib.update\_entities(pos)**
-
-This method triggers entities update for the display node at pos. Actual entity update is made by `on_display_update` callback associated to the entity.
-
-`pos`: Position of the node
-### register\_display\_entity
-**display\_lib.register\_display\_entity(entity_name)**
-
-This is a helper to register entities used for display. 
-
-`entity_name`: Name of the entity to register.
-## Provided callback implementations
-### on_place
-**display\_lib.on\_place(itemstack, placer, pointed\_thing)**
-
-`on_place` node callback implementation. Display nodes should have this callback (avoid placement of horizontal display node).
-### on_construct
-**display\_lib.on\_construct(pos)**
-
-`on_construct` node callback implementation. Display nodes should have this callback (creates, places and updates display entities on node construction).
-### on_destruct
-**display\_lib.on_destruct(pos)**
-
-`on_destruct` node callback implementation. Display nodes should have this callback (removes display entities on node destruction). 
-### on_rotate
-**display\_lib.on\_rotate(pos, node, user, mode, new_param2)**
-
-`on_rotate` node callback implementation. Display nodes should have this callback (restricts rotations and rotates display entities associated with node).
-### on_activate
-**display\_lib.on_activate(entity, staticdata)**
-
-`On_activate` entity callback implementation for display entities. No need of this method if display entities have been registered using `register_display_entity` (callback is already set). 
-
-## Howto register a display node
-* Register display entities with `register_display_entity`
-
-* Register node with :
-  - `on_place`, `on_construct`, `on_destruct` and `on_rotate` callbacks using display_lib callbacks.
-  
-  - `display_lib_node` group. This will make this node have their entities updated as soon as the mapblock is loaded (Useful after /clearobjects).
-  
-  - a `display_entities` field in node definition containing a entity name indexed table. See below for description of each display_entities fields.
-
-### Display_entities fields
-`on_display_update` is a callback in charge of setting up entity texture. If not set, entity will have no texture and will be displayed as unknown item.
-
-`depth`, `right` and `heigh` : Entity position regarding to node facedir/wallmounted main axis. Values for these fields can be any number between -0.5 and 0.5 (default value is 0). Position 0,0,0 is the center of the node. `depth` goes from front (-0.5) to rear (0.5), `height` goes from bottom (-0.5) to top (0.5) and `right` goes from left (-0.5) to right (0.5).
-
-In order to avoid flickering text, it's better to have text a little behind node surface. A good spacing value is given by `display_lib.entity_spacing` variable.
-
-### Example
-
-	display_lib.register_display_entity("mymod:entity1")
-	display_lib.register_display_entity("mymod:entity2")
-
-	function my_display_update1(pos, objref) 
-		objref:set_properties({ textures= {"mytexture1.png"},
-		                        visual_size = {x=1, y=1} })
-	end
-
-	function my_display_update2(pos, objref) 
-		objref:set_properties({ textures= {"mytexture2.png"},
-		                        visual_size = {x=1, y=1} })
-	end
-
-	minetest.register_node("mymod:test_display_node", {
-		...
-		paramtype2 = "facedir",
-		...
-		groups = { display_lib_node = 1, ... },
-		...
-		display_entities = {
-			["mymod:entity1"] = { 
-				depth = 0.3,
-				on_display_update = my_display_update1 },
-			["mymod:entity1"] = { 
-				depth = 0.2, height = 0.1,
-				on_display_update = my_display_update2 },
-			},
-		...
-		on_place = display_lib.on_place,
-		on_construct = display_lib.on_construct,
-		on_destruct = display_lib.on_destruct,
-		on_rotate = display_lib.on_rotate,
-		...
-	})
diff --git a/display_lib/LICENSE.txt b/display_lib/LICENSE.txt
deleted file mode 100644
index 341c30b..0000000
--- a/display_lib/LICENSE.txt
+++ /dev/null
@@ -1,166 +0,0 @@
-                   GNU LESSER GENERAL PUBLIC LICENSE
-                       Version 3, 29 June 2007
-
- Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-
-  This version of the GNU Lesser General Public License incorporates
-the terms and conditions of version 3 of the GNU General Public
-License, supplemented by the additional permissions listed below.
-
-  0. Additional Definitions.
-
-  As used herein, "this License" refers to version 3 of the GNU Lesser
-General Public License, and the "GNU GPL" refers to version 3 of the GNU
-General Public License.
-
-  "The Library" refers to a covered work governed by this License,
-other than an Application or a Combined Work as defined below.
-
-  An "Application" is any work that makes use of an interface provided
-by the Library, but which is not otherwise based on the Library.
-Defining a subclass of a class defined by the Library is deemed a mode
-of using an interface provided by the Library.
-
-  A "Combined Work" is a work produced by combining or linking an
-Application with the Library.  The particular version of the Library
-with which the Combined Work was made is also called the "Linked
-Version".
-
-  The "Minimal Corresponding Source" for a Combined Work means the
-Corresponding Source for the Combined Work, excluding any source code
-for portions of the Combined Work that, considered in isolation, are
-based on the Application, and not on the Linked Version.
-
-  The "Corresponding Application Code" for a Combined Work means the
-object code and/or source code for the Application, including any data
-and utility programs needed for reproducing the Combined Work from the
-Application, but excluding the System Libraries of the Combined Work.
-
-  1. Exception to Section 3 of the GNU GPL.
-
-  You may convey a covered work under sections 3 and 4 of this License
-without being bound by section 3 of the GNU GPL.
-
-  2. Conveying Modified Versions.
-
-  If you modify a copy of the Library, and, in your modifications, a
-facility refers to a function or data to be supplied by an Application
-that uses the facility (other than as an argument passed when the
-facility is invoked), then you may convey a copy of the modified
-version:
-
-   a) under this License, provided that you make a good faith effort to
-   ensure that, in the event an Application does not supply the
-   function or data, the facility still operates, and performs
-   whatever part of its purpose remains meaningful, or
-
-   b) under the GNU GPL, with none of the additional permissions of
-   this License applicable to that copy.
-
-  3. Object Code Incorporating Material from Library Header Files.
-
-  The object code form of an Application may incorporate material from
-a header file that is part of the Library.  You may convey such object
-code under terms of your choice, provided that, if the incorporated
-material is not limited to numerical parameters, data structure
-layouts and accessors, or small macros, inline functions and templates
-(ten or fewer lines in length), you do both of the following:
-
-   a) Give prominent notice with each copy of the object code that the
-   Library is used in it and that the Library and its use are
-   covered by this License.
-
-   b) Accompany the object code with a copy of the GNU GPL and this license
-   document.
-
-  4. Combined Works.
-
-  You may convey a Combined Work under terms of your choice that,
-taken together, effectively do not restrict modification of the
-portions of the Library contained in the Combined Work and reverse
-engineering for debugging such modifications, if you also do each of
-the following:
-
-   a) Give prominent notice with each copy of the Combined Work that
-   the Library is used in it and that the Library and its use are
-   covered by this License.
-
-   b) Accompany the Combined Work with a copy of the GNU GPL and this license
-   document.
-
-   c) For a Combined Work that displays copyright notices during
-   execution, include the copyright notice for the Library among
-   these notices, as well as a reference directing the user to the
-   copies of the GNU GPL and this license document.
-
-   d) Do one of the following:
-
-       0) Convey the Minimal Corresponding Source under the terms of this
-       License, and the Corresponding Application Code in a form
-       suitable for, and under terms that permit, the user to
-       recombine or relink the Application with a modified version of
-       the Linked Version to produce a modified Combined Work, in the
-       manner specified by section 6 of the GNU GPL for conveying
-       Corresponding Source.
-
-       1) Use a suitable shared library mechanism for linking with the
-       Library.  A suitable mechanism is one that (a) uses at run time
-       a copy of the Library already present on the user's computer
-       system, and (b) will operate properly with a modified version
-       of the Library that is interface-compatible with the Linked
-       Version.
-
-   e) Provide Installation Information, but only if you would otherwise
-   be required to provide such information under section 6 of the
-   GNU GPL, and only to the extent that such information is
-   necessary to install and execute a modified version of the
-   Combined Work produced by recombining or relinking the
-   Application with a modified version of the Linked Version. (If
-   you use option 4d0, the Installation Information must accompany
-   the Minimal Corresponding Source and Corresponding Application
-   Code. If you use option 4d1, you must provide the Installation
-   Information in the manner specified by section 6 of the GNU GPL
-   for conveying Corresponding Source.)
-
-  5. Combined Libraries.
-
-  You may place library facilities that are a work based on the
-Library side by side in a single library together with other library
-facilities that are not Applications and are not covered by this
-License, and convey such a combined library under terms of your
-choice, if you do both of the following:
-
-   a) Accompany the combined library with a copy of the same work based
-   on the Library, uncombined with any other library facilities,
-   conveyed under the terms of this License.
-
-   b) Give prominent notice with the combined library that part of it
-   is a work based on the Library, and explaining where to find the
-   accompanying uncombined form of the same work.
-
-  6. Revised Versions of the GNU Lesser General Public License.
-
-  The Free Software Foundation may publish revised and/or new versions
-of the GNU Lesser General Public License from time to time. Such new
-versions will be similar in spirit to the present version, but may
-differ in detail to address new problems or concerns.
-
-  Each version is given a distinguishing version number. If the
-Library as you received it specifies that a certain numbered version
-of the GNU Lesser General Public License "or any later version"
-applies to it, you have the option of following the terms and
-conditions either of that published version or of any later version
-published by the Free Software Foundation. If the Library as you
-received it does not specify a version number of the GNU Lesser
-General Public License, you may choose any version of the GNU Lesser
-General Public License ever published by the Free Software Foundation.
-
-  If the Library as you received it specifies that a proxy can decide
-whether future versions of the GNU Lesser General Public License shall
-apply, that proxy's public statement of acceptance of any version is
-permanent authorization for you to choose that version for the
-Library.
-
diff --git a/display_lib/README.md b/display_lib/README.md
deleted file mode 100644
index 88a39ee..0000000
--- a/display_lib/README.md
+++ /dev/null
@@ -1,14 +0,0 @@
-# Display Lib
-
-This library's purpose is to ease creation of nodes with one or more displays on sides. For example, signs and clocks. Display can be dynamic and/or different for each node instance.
-
-**Limitations**: This lib uses entities to draw display. This means display has to be vertical. So display nodes rotation are limitated to "upside up" positions.
-
-**Dependancies**:default
-
-**License**: LPGL
-
-**API**: See [API.md](https://github.com/pyrollo/display_modpack/blob/master/display_lib/API.md) document please.
-
-For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?t=19365) at the Minetest forums.
-
diff --git a/display_lib/copyright.txt b/display_lib/copyright.txt
deleted file mode 100644
index e3a15e9..0000000
--- a/display_lib/copyright.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-Code by Pierre-Yves Rollo (pyrollo)
-Contributors:
-(gpcf): Compatibility with signs lib
-(Thomas--S): Fix /clearobjects bug
diff --git a/display_lib/depends.txt b/display_lib/depends.txt
deleted file mode 100644
index e69de29..0000000
diff --git a/display_lib/init.lua b/display_lib/init.lua
deleted file mode 100644
index 11ed60e..0000000
--- a/display_lib/init.lua
+++ /dev/null
@@ -1,240 +0,0 @@
---[[
-    display_lib mod for Minetest - Library to add dynamic display 
-    capabilities to nodes
-    (c) Pierre-Yves Rollo
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
---]]
-
-display_lib = {}
-
--- Prefered gap between node and entity
--- Entity positionment is up to mods but it is a good practice to use this
--- variable as spacing between entity and node
-display_lib.entity_spacing = 0.002
-
--- Miscelaneous values depending on wallmounted param2
-local wallmounted_values = {
-	[0]={dx=0,  dz=0,  rx=0,  rz=0,  yaw=0,          rotate=0}, -- Should never be used
-		{dx=0,  dz=0,  rx=0,  rz=0,  yaw=0,          rotate=1}, -- Should never be used
-		{dx=-1, dz=0,  rx=0,  rz=-1, yaw=-math.pi/2, rotate=5},
-		{dx=1,  dz=0,  rx=0,  rz=1,  yaw=math.pi/2,  rotate=4},
-		{dx=0,  dz=-1, rx=1,  rz=0,  yaw=0,          rotate=2},
-		{dx=0,  dz=1,  rx=-1, rz=0,  yaw=math.pi,    rotate=3}
-}
-
--- Miscelaneous values depending on facedir param2
-local facedir_values = {
-	[0]={dx=0,  dz=-1, rx=1,  rz=0,  yaw=0,          rotate=1},
-	    {dx=-1, dz=0,  rx=0,  rz=-1, yaw=-math.pi/2, rotate=2},
-	    {dx=0,  dz=1,  rx=-1, rz=0,  yaw=math.pi,    rotate=3},
-		{dx=1,  dz=0,  rx=0,  rz=1,  yaw=math.pi/2,  rotate=0},
-	    -- Forbiden values :
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
-	}
-
--- dx/dy = depth vector, rx/ly = right vector, yaw = yaw of entity,
--- rotate = next facedir/wallmount on rotate
-
-local function get_values(node)
-	local ndef = minetest.registered_nodes[node.name]
-
-	if ndef then
-		if ndef.paramtype2 == "wallmounted" then
-			return wallmounted_values[node.param2]
-		end
-		if ndef.paramtype2 == "facedir" then
-			return facedir_values[node.param2]
-		end
-	end
-end
-
---- Gets the display entities attached with a node. Removes extra ones
-local function get_entities(pos)
-	local objrefs = {}
-	local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
-	if ndef and ndef.display_entities then
-		for _, objref in ipairs(minetest.get_objects_inside_radius(pos, 0.5)) do
-			local entity = objref:get_luaentity()
-		    if entity and ndef.display_entities[entity.name] then
-				if objrefs[entity.name] then
-				    objref:remove()
-				else
-					objrefs[entity.name] = objref
-				end
-		    end
-		end
-	end
-	return objrefs
-end
-
-local function clip_pos_prop(posprop)
-	if posprop then
-		return math.max(-0.5, math.min(0.5, posprop))
-	else
-		return 0
-	end
-end
-
---- (Create and) place display entities according to the node orientation
-local function place_entities(pos)
-	local node = minetest.get_node(pos)
-	local ndef = minetest.registered_nodes[node.name]
-	local values = get_values(node)
-	local objrefs = get_entities(pos)
-
-	if values and ndef and ndef.display_entities then
-
-		for entity_name, props in pairs(ndef.display_entities) do
-			local depth = clip_pos_prop(props.depth)
-			local height = clip_pos_prop(props.height)
-			local right = clip_pos_prop(props.right)
-			if not objrefs[entity_name] then
-				objrefs[entity_name] = minetest.add_entity(pos, entity_name)
-			end
-
-			objrefs[entity_name]:setpos({
-				x = pos.x - values.dx * depth + values.rx * right,
-				y = pos.y + height,
-				z = pos.z - values.dz * depth + values.rz * right})
-
-			objrefs[entity_name]:setyaw(values.yaw)
-		end
-	end
-	return objrefs
-end
-
---- Call on_display_update callback of a node for one of its display entities
-local function call_node_on_display_update(pos, objref)
-	local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
-	local entity = objref:get_luaentity()
-	if ndef and ndef.display_entities and entity and ndef.display_entities[entity.name] then
-		ndef.display_entities[entity.name].on_display_update(pos, objref)
-	end	
-end
-
---- Force entity update
-function display_lib.update_entities(pos)
-	local objrefs = place_entities(pos)
-	for _, objref in pairs(objrefs) do
-		call_node_on_display_update(pos, objref)
-    end
-end
-
---- On_activate callback for display_lib entities. Calls on_display_update callbacks 
---- of corresponding node for each entity.
-function display_lib.on_activate(entity, staticdata)
-   if entity then
-      entity.object:set_armor_groups({immortal=1})
-      call_node_on_display_update(entity.object:getpos(), entity.object)
-   end
-end
-
---- On_place callback for display_lib items. Does nothing more than preventing item
---- from being placed on ceiling or ground 
-function display_lib.on_place(itemstack, placer, pointed_thing)
-	local ndef = itemstack:get_definition()
-	local above = pointed_thing.above
-	local under = pointed_thing.under
-	local dir = {x = under.x - above.x,
-				 y = under.y - above.y,
-				 z = under.z - above.z}
-
-	if ndef then
-		if ndef.paramtype2 == "wallmounted" then
-
-			local wdir = minetest.dir_to_wallmounted(dir)
-
-			if wdir == 0 or wdir == 1 then
-				dir = placer:get_look_dir()
-				dir.y = 0
-				wdir = minetest.dir_to_wallmounted(dir)
-			end
-
-			return minetest.item_place(itemstack, placer, pointed_thing, wdir)
-		else
-			return minetest.item_place(itemstack, placer, pointed_thing, minetest.dir_to_facedir(dir))
-		end
-	end
-
-end
-
---- On_construct callback for display_lib items. Creates entities and update them.
-function display_lib.on_construct(pos)
-	display_lib.update_entities(pos)
-end
-
---- On_destruct callback for display_lib items. Removes entities.
-function display_lib.on_destruct(pos)
-	local objrefs = get_entities(pos)
-	
-	for _, objref in pairs(objrefs) do 
-		objref:remove()
-	end
-end
-
--- On_rotate (screwdriver) callback for display_lib items. Prevents axis rotation and reorients entities.
-function display_lib.on_rotate(pos, node, user, mode, new_param2)
-	if mode ~= 1 then return false end
-
-	local values = get_values(node)
-
-	if values then
-		minetest.swap_node(pos, {name = node.name, param1 = node.param1, param2 = values.rotate})
-		place_entities(pos)
-		return true
-	else
-		return false
-	end
-end
-
---- Creates display entity with some fields and the on_activate callback
-function display_lib.register_display_entity(entity_name)
-	if not minetest.registered_entity then
-		minetest.register_entity(':'..entity_name, {
-			collisionbox = { 0, 0, 0, 0, 0, 0 },
-			visual = "upright_sprite",
-			textures = {},
-			on_activate = display_lib.on_activate,
-		})
-	end
-end
-
-minetest.register_lbm({
-	label = "Update display_lib entities",
-	name = "display_lib:update_entities",
-	run_at_every_load = true,
-	nodenames = {"group:display_lib_node"},
-	action = function(pos, node) display_lib.update_entities(pos) end,
-})
-
diff --git a/font_api/API.md b/font_api/API.md
new file mode 100644
index 0000000..a4aee6d
--- /dev/null
+++ b/font_api/API.md
@@ -0,0 +1,110 @@
+# Font Lib API
+This document describes Font Lib API. Font Lib creates textures for font display on entities.
+
+## Settings
+### default_font
+Name of the font to be used when no font is given. The font should be registered.
+If no default\_font given or if default\_font given but not registered, the first registered font will be used as default.
+
+## Provided methods
+### get\_text\_size
+**font\_lib.get\_text\_size(font\_name, text)**
+
+Computes size for a given font and text
+
+**font\_name**: Font name of registered font to use
+**text**: Text to be rendered
+**Returns**: rendered text width, height
+
+### make\_line\_texture
+**font\_lib.make\_line\_texture(font\_name, text, width, x, y)**
+
+Builds texture part for a text line
+
+**font\_name**: Font name of registered font to use
+**text**: Text to be rendered
+**texturew**: Width of the texture (extra text is not rendered)
+**x**: Starting x position in texture
+**y**: Vertical position of the line in texture
+**Returns**: Texture string
+
+### make\_multiline\_texture
+**font\_lib.make\_multiline\_texture(font\_name, text, width, height, maxlines, halign, valign, color)**
+
+Builds texture for a multiline colored text
+
+**font\_name**: Font name of registered font to use
+**text**: Text to be rendered
+**texturew**: Width of the texture (extra text will be truncated)
+**textureh**: Height of the texture
+**maxlines**: Maximum number of lines
+**halign**: Horizontal text align ("left", "right" or "center") (optional)
+**valign**: Vertical text align ("top", "bottom" or "center") (optional)
+**color**: Color of the text (optional)
+**Returns**: Texture string
+
+### register\_font
+**font\_lib.register_font(font\_name, height, widths)**
+
+Registers a new font in font_api.
+
+**font\_name**: Name of the font to register (this name will be used to address the font later)
+If registering different sizes of the same font, add size in the font name (e.g. times\_10,  times\_12...).
+**height**: Font height in pixels (all font textures should have the same height)
+**widths** : Array of character widths in pixels, indexed by UTF codepoints
+
+Font must have a char 0 which will be used to display any unknown char.
+
+All textures corresponding to the indexes in **widths** array should be present in textures directory with a name matching the pattern :
+
+**font\_<font\_name>_<utf\_code>.png**
+
+**<font\_name>**: Name of the font as given in the first argument
+**<utf\_code>**: UTF code of the char in 4 hexadecimal digits
+
+To ease that declaration, a shell is provided to build a <font\_name>.lua file from the texture files (see provided tools).
+
+## Provided tools
+
+Still in early stage of development, these tools are helpers to create font mods.
+
+### make_font_texture.sh
+
+This scripts takes a .ttf file as input and create one .png file per char, that can be used as font texture. Launch it from your future font mod directory. 
+
+__Advice__
+
+This script works much better with pixels font, providing the correct height. There is no antialiasing at all, vector fonts and bad heights gives very ugly results.
+
+__Syntax__
+
+**make\_font\_texture.sh <fontfile> <fontname> <fontsize>**
+
+**<fontfile>**: A TTF font file to use to create textures.
+**<fontname>**: The font name to be used in font_api (should be simple, with no spaces).
+**<fontsize>**: Font height to be rendered.
+
+### make_font_lua.sh
+
+This script analyses textures in textures directory and creates a font\_<font\_name>.lua files with a call to register_font with images information. Launch it from your future font mod directory. 
+
+Once the font\_<font\_name>.lua created, it can be included by a init.lua file or directly renamed to init.lua if you are creating a simple font mod.
+
+__Syntax__
+
+**make\_font_lua.sh <fontname>**
+
+**<fontname>**: The font name to be used in font_api (same as given to make\_font\_texture.sh)
+
+### An exemple generating a font mod
+
+    mkdir font_myfont
+    cd font_myfont
+    /<path_to_font_api>/tools/make_font_texture.sh myfont.ttf myfont 12
+    /<path_to_font_api>/tools/make_font_lua.sh myfont
+    mv font_myfont.lua init.lua
+
+
+
+
+
diff --git a/font_api/LICENSE.txt b/font_api/LICENSE.txt
new file mode 100644
index 0000000..341c30b
--- /dev/null
+++ b/font_api/LICENSE.txt
@@ -0,0 +1,166 @@
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+  A "Combined Work" is a work produced by combining or linking an
+Application with the Library.  The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+  The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+  The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+  1. Exception to Section 3 of the GNU GPL.
+
+  You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+  2. Conveying Modified Versions.
+
+  If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+   a) under this License, provided that you make a good faith effort to
+   ensure that, in the event an Application does not supply the
+   function or data, the facility still operates, and performs
+   whatever part of its purpose remains meaningful, or
+
+   b) under the GNU GPL, with none of the additional permissions of
+   this License applicable to that copy.
+
+  3. Object Code Incorporating Material from Library Header Files.
+
+  The object code form of an Application may incorporate material from
+a header file that is part of the Library.  You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+   a) Give prominent notice with each copy of the object code that the
+   Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the object code with a copy of the GNU GPL and this license
+   document.
+
+  4. Combined Works.
+
+  You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
+portions of the Library contained in the Combined Work and reverse
+engineering for debugging such modifications, if you also do each of
+the following:
+
+   a) Give prominent notice with each copy of the Combined Work that
+   the Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the Combined Work with a copy of the GNU GPL and this license
+   document.
+
+   c) For a Combined Work that displays copyright notices during
+   execution, include the copyright notice for the Library among
+   these notices, as well as a reference directing the user to the
+   copies of the GNU GPL and this license document.
+
+   d) Do one of the following:
+
+       0) Convey the Minimal Corresponding Source under the terms of this
+       License, and the Corresponding Application Code in a form
+       suitable for, and under terms that permit, the user to
+       recombine or relink the Application with a modified version of
+       the Linked Version to produce a modified Combined Work, in the
+       manner specified by section 6 of the GNU GPL for conveying
+       Corresponding Source.
+
+       1) Use a suitable shared library mechanism for linking with the
+       Library.  A suitable mechanism is one that (a) uses at run time
+       a copy of the Library already present on the user's computer
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+       of the Library that is interface-compatible with the Linked
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+
+   e) Provide Installation Information, but only if you would otherwise
+   be required to provide such information under section 6 of the
+   GNU GPL, and only to the extent that such information is
+   necessary to install and execute a modified version of the
+   Combined Work produced by recombining or relinking the
+   Application with a modified version of the Linked Version. (If
+   you use option 4d0, the Installation Information must accompany
+   the Minimal Corresponding Source and Corresponding Application
+   Code. If you use option 4d1, you must provide the Installation
+   Information in the manner specified by section 6 of the GNU GPL
+   for conveying Corresponding Source.)
+
+  5. Combined Libraries.
+
+  You may place library facilities that are a work based on the
+Library side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+   a) Accompany the combined library with a copy of the same work based
+   on the Library, uncombined with any other library facilities,
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+
+   b) Give prominent notice with the combined library that part of it
+   is a work based on the Library, and explaining where to find the
+   accompanying uncombined form of the same work.
+
+  6. Revised Versions of the GNU Lesser General Public License.
+
+  The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+  Each version is given a distinguishing version number. If the
+Library as you received it specifies that a certain numbered version
+of the GNU Lesser General Public License "or any later version"
+applies to it, you have the option of following the terms and
+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
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+
+  If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the
+Library.
+
diff --git a/font_api/README.md b/font_api/README.md
new file mode 100644
index 0000000..c7ae64b
--- /dev/null
+++ b/font_api/README.md
@@ -0,0 +1,14 @@
+# Font Lib
+
+This library for font display on entities (to be used with display_api for sign creation).
+
+**Dependancies**: default
+
+**License**: LGPL
+
+(Default font taken from VanessaE's homedecor/signs_lib, originally under WTFPL)
+
+**API**: See [API.md](https://github.com/pyrollo/display_modpack/blob/master/font_api/API.md) document please.
+
+For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?t=13563) at the Minetest forums.
+
diff --git a/font_api/copyright.txt b/font_api/copyright.txt
new file mode 100644
index 0000000..ceb5446
--- /dev/null
+++ b/font_api/copyright.txt
@@ -0,0 +1,3 @@
+Code by Pierre-Yves Rollo (pyrollo)
+Contributors:
+Andrzej Pieńkowski (apienk): Unicode support and tool for creating texturess
diff --git a/font_api/depends.txt b/font_api/depends.txt
new file mode 100644
index 0000000..e69de29
diff --git a/font_api/init.lua b/font_api/init.lua
new file mode 100644
index 0000000..f407f8b
--- /dev/null
+++ b/font_api/init.lua
@@ -0,0 +1,343 @@
+--[[
+    font_api mod for Minetest - Library to add font display capability
+    to display_api mod.
+    (c) Pierre-Yves Rollo
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+--]]
+
+-- Global variables
+-------------------
+
+font_api = {}
+font_api.name = minetest.get_current_modname()
+font_api.path = minetest.get_modpath(font_api.name)
+font_api.registered_fonts = {}
+
+-- Local variables
+------------------
+
+local default_font = false
+
+-- Local functions
+------------------
+
+-- Split multiline text into array of lines, with <maxlines> maximum lines.
+
+local function split_lines(text, maxlines)
+	local splits = text:split("\n")
+	if maxlines then
+		local lines = {}
+		for num = 1,maxlines do
+			lines[num] = splits[num]
+		end
+		return lines
+	else
+		return splits
+	end
+end
+
+-- Gets a default (settings or fist font)
+
+local function get_default_font()
+	-- First call
+	if default_font == false then
+		default_font = nil
+
+		-- First, try with settings
+		local settings_font = minetest.settings:get("default_font")
+
+		if settings_font ~= nil and settings_font ~= "" then
+			default_font = font_api.registered_fonts[settings_font]
+
+			if default_font == nil then
+				minetest.log("warning", "Default font in settings (\""..
+				             settings_font.."\") is not registered.")
+			end
+		end
+
+		-- If failed, choose first font
+		if default_font == nil then
+			for _, font in pairs(font_api.registered_fonts) do
+				default_font = font
+				break
+			end
+		end
+
+		-- Error, no font registered
+		if default_font == nil then
+			minetest.log("error",
+			             "No font registred, unable to choose a default font.")
+		end
+	end
+
+	return default_font
+end
+
+-- Returns font properties to be used according to font_name
+
+local function get_font(font_name)
+	local font = font_api.registered_fonts[font_name]
+
+	if font == nil then
+		local message
+
+		if font_name == nil then
+			message = "No font given"
+		else
+			message = "Font \""..font_name.."\" unregistered"
+		end
+
+		font = get_default_font()
+
+		if font ~= nil then
+			minetest.log("info", message..", using font \""..font.name.."\".")
+		end
+	end
+
+	return font
+end
+
+-- Returns next char, managing ascii and unicode plane 0 (0000-FFFF).
+
+local function get_next_char(text, pos)
+
+	local msb = text:byte(pos)
+	-- 1 byte char, ascii equivalent codepoints
+	if msb < 0x80 then
+	    return msb, pos + 1
+    end
+
+	-- 4 bytes char not managed (Only 16 bits codepoints are managed)
+	if msb >= 0xF0 then
+		return 0, pos + 4
+	end
+
+	-- 3 bytes char
+	if msb >= 0xE0 then
+		return (msb - 0xE0) * 0x1000
+		       + text:byte(pos + 1) % 0x40 * 0x40
+		       + text:byte(pos + 2) % 0x40,
+		       pos + 3
+	end
+
+	-- 2 bytes char (little endian)
+	if msb >= 0xC2 then
+		return (msb - 0xC2) * 0x40 + text:byte(pos + 1),
+		       pos + 2
+	end
+
+    -- Not an UTF char
+	return 0, pos + 1
+end
+
+-- API functions
+----------------
+
+-- Computes text size for a given font and text (ignores new lines)
+-- @param font_name Font to be used
+-- @param text Text to be rendered
+-- @return Rendered text (width, height)
+
+function font_api.get_text_size(font_name, text)
+	local char
+	local width = 0
+    local pos = 1
+	local font = get_font(font_name)
+
+	if font == nil then
+		return 0, 0
+	else
+		while pos <= #text do
+			char, pos = get_next_char(text, pos)
+			-- Replace chars with no texture by the NULL(0) char
+			if font.widths[char] ~= nil then
+				width = width + font.widths[char]
+			else
+				width = width + font.widths[0]
+			end
+		end
+	end
+
+	return width, font.height
+end
+
+--- Builds texture part for a text line
+-- @param font_name Font to be used
+-- @param text Text to be rendered
+-- @param width Width of the texture (extra text is not rendered)
+-- @param x Starting x position in texture
+-- @param y Vertical position of the line in texture
+-- @return Texture string
+
+function font_api.make_line_texture(font_name, text, width, x, y)
+	local texture = ""
+	local char
+	local pos = 1
+	local font = get_font(font_name)
+
+	if font ~= nil then
+		while pos <= #text do
+			char, pos = get_next_char(text, pos)
+
+			-- Replace chars with no texture by the NULL(0) char
+			if font.widths[char] == nil then
+                print(string.format("["..font_api.name
+                                    .."] Missing char %d (%04x)",char,char))
+                char = 0
+			end
+
+			-- Add image only if it is visible (at least partly)
+			if x + font.widths[char] >= 0 and x <= width then
+				texture = texture..
+					string.format(":%d,%d=font_%s_%04x.png",
+					              x, y, font.name, char)
+			end
+			x = x + font.widths[char]
+		end
+	end
+
+	return texture
+end
+
+--- Builds texture for a multiline colored text
+-- @param font_name Font to be used
+-- @param text Text to be rendered
+-- @param texturew Width of the texture (extra text will be truncated)
+-- @param textureh Height of the texture
+-- @param maxlines Maximum number of lines
+-- @param halign Horizontal text align ("left"/"center"/"right") (optional)
+-- @param valign Vertical text align ("top"/"center"/"bottom") (optional)
+-- @param color Color of the text (optional)
+-- @return Texture string
+
+function font_api.make_multiline_texture(font_name, text, width, height,
+                                         maxlines, halign, valign, color)
+	local texture = ""
+	local lines = {}
+    local textheight = 0
+	local y, w, h
+
+    for num, line in pairs(split_lines(text, maxlines)) do
+        w, h = font_api.get_text_size(font_name, line)
+        lines[num] = { text = line, width = w, height = h, }
+        textheight = textheight + h
+    end
+
+    if #lines then
+        if valign == "top" then
+            y = 0
+        elseif valign == "bottom" then
+            y = height - textheight
+        else
+            y = (height - textheight) / 2
+        end
+    end
+
+	for _, line in pairs(lines) do
+		if halign == "left" then
+			texture = texture..
+				font_api.make_line_texture(font_name, line.text, width,
+				0, y)
+		elseif halign == "right" then
+			texture = texture..
+				font_api.make_line_texture(font_name, line.text, width,
+				width - line.width, y)
+		else
+			texture = texture..
+				font_api.make_line_texture(font_name, line.text, width,
+				(width - line.width) / 2, y)
+		end
+		y = y + line.height
+	end
+
+	texture = string.format("[combine:%dx%d", width, height)..texture
+	if color then texture = texture.."^[colorize:"..color end
+	return texture
+end
+
+--- Register a new font
+-- Textures corresponding to the font should be named after following patern :
+-- font_<name>_<code>.png
+-- <name> : name of the font
+-- <code> : 4 digit hexadecimal unicode of the char
+-- @param font_name Name of the font to register
+-- If registering different sizes of the same font, add size in the font name
+-- (e.g. times_10, times_12...).
+-- @param height Font height in pixels
+-- @param widths Array of character widths in pixels, indexed by UTF codepoints
+
+function font_api.register_font(font_name, height, widths)
+
+	if font_api.registered_fonts[font_name] ~= nil then
+		minetest.log("error", "Font \""..font_name.."\" already registered.")
+		return
+	end
+
+	if height == nil or height <= 0 then
+		minetest.log("error", "Font \""..font_name..
+		             "\" must have a positive height.")
+		return
+	end
+
+	if type(widths) ~= "table" then
+		minetest.log("error", "Font \""..font_name..
+		             "\" must have a widths array.")
+		return
+	end
+
+	if widths[0] == nil then
+		minetest.log("error", "Font \""..font_name..
+		             "\" must have a char with codepoint 0 (=unknown char).")
+		return
+	end
+
+	font_api.registered_fonts[font_name] =
+		{ name = font_name, height = height, widths = widths }
+
+	-- Force to choose again default font
+	-- (allows use of fonts registered after start)
+	default_font = false
+end
+
+--- Standard on_display_update entity callback.
+-- Node should have a corresponding display_entity with size, resolution and 
+-- maxlines fields and optionally halign, valign and color fields
+-- @param pos Node position
+-- @param objref Object reference of entity
+
+function font_api.on_display_update(pos, objref)
+	local meta = minetest.get_meta(pos)
+	local text = meta:get_string("display_text")
+	local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
+	local entity = objref:get_luaentity()
+
+	if entity and ndef.display_entities[entity.name] then
+		local def = ndef.display_entities[entity.name]
+		local font = get_font(def.font_name)
+
+		objref:set_properties({ 
+			textures={font_api.make_multiline_texture(
+				def.font_name, text,
+				def.size.x * def.resolution.x * font.height,
+				def.size.y * def.resolution.y * font.height,
+				def.maxlines, def.halign, def.valign, def.color)},
+			visual_size = def.size
+		})
+	end
+end
+
+-- Compatibility
+font_lib = font_api
+
diff --git a/font_api/settingtypes.txt b/font_api/settingtypes.txt
new file mode 100644
index 0000000..d111159
--- /dev/null
+++ b/font_api/settingtypes.txt
@@ -0,0 +1 @@
+default_font(Default font) string
diff --git a/font_api/tools/make_font_lua.sh b/font_api/tools/make_font_lua.sh
new file mode 100755
index 0000000..ae24001
--- /dev/null
+++ b/font_api/tools/make_font_lua.sh
@@ -0,0 +1,56 @@
+#!/bin/bash
+
+scriptname=$(basename $0)
+identify="identify"
+
+font_name=$1
+
+for f in textures/font_${font_name}_????.png
+do
+    if [[ $f =~ textures/font_${font_name}_([0-9a-fA-F]{4}).png ]]
+    then
+        code=$((16#${BASH_REMATCH[1]}))
+        size=$(identify $f | cut -d " " -f 3)
+        w=$(echo $size | cut -d "x" -f 1)
+        h=$(echo $size | cut -d "x" -f 2)  
+
+        if [ -z "$font_height" ]
+        then
+        	font_height=$h
+        else
+        	if [ $font_height -ne $h ]
+        	then
+        		echo "Error : $f as height of $h pixels, previous textures have a height of $font_height pixels. All textures should have the same height."
+        	fi
+        fi
+
+        if [ -z "$font_widths" ]
+        then
+      	    font_widths="[$code]=$w"
+      	else
+      	    font_widths="$font_widths, [$code]=$w"
+      	fi
+    fi
+done
+
+echo "--[[
+
+$luafile generated by $scriptname $(LANG=en_US date)
+
+--]]
+
+font_api.register_font(
+	'$font_name',
+	$font_height,
+	{ $font_widths }
+);
+" > font_$font_name.lua
+
+if grep -q font_api depends.txt &>/dev/null
+then
+	echo "font_api already in depends.txt."
+else
+	echo "adding font_api to depends.txt."
+	echo "font_api" >> depends.txt
+fi
+
diff --git a/font_api/tools/make_font_textures.sh b/font_api/tools/make_font_textures.sh
new file mode 100755
index 0000000..6f4959d
--- /dev/null
+++ b/font_api/tools/make_font_textures.sh
@@ -0,0 +1,111 @@
+#!/bin/bash
+
+# This program generates a bitmap font for font_api mod for Minetest game.
+# (c) Andrzej Pieńkowski <pienkowski.andrzej@gmail.com>
+# (c) Pierre-Yves Rollo <dev@pyrollo.com>
+# License: GPL
+
+usage() {
+	echo "Usage: $0 fontfile fontname fontsize"
+	echo "fontfile: A TTF font file to use to create textures."
+	echo "fontname: The font name to be used in font_api (should be simple, with no spaces)."
+	echo "fontsize: Font height to be rendered."
+}
+
+if [ $# -ne 3 ] 
+then
+	usage
+	exit 1
+fi
+
+fontfile=$1
+fontname=$2
+fontsize=$3
+
+if [ ! -r "$fontfile" ]
+then
+	echo "$fontfile not readable."
+	exit 1
+fi
+
+# check imagemagick
+hash convert &>/dev/null
+if [ $? -eq 1 ]; then
+	echo -e "Error: This program requires convert from ImageMagick! Please install it by typing 'sudo apt-get install imagemagick' in terminal."
+	abort=1
+fi
+
+# check ttx
+hash ttx &>/dev/null
+if [ $? -eq 1 ]; then
+	echo -e "Error: This program requires ttx from FontTools! Please install it by typing 'sudo apt-get install fonttools' in terminal."
+	abort=1
+fi
+
+if [ $abort ]
+then
+	exit 1
+fi
+
+generate() {
+	for i in $(seq $((0x$1)) $((0x$2)))
+	do
+		if echo "$codepoints" | grep -qi $(printf "0x%x" $i)
+		then
+		    hex=$(printf "%04x" $i)
+		    echo -e "Generating textures/font_${fontname}_$hex.png file for \"\\U$hex\" char."
+            if [[ "$hex" == "005c" ]] # Backslash char
+            then
+    			convert -background none -fill black -font "$fontfile" -pointsize $fontsize label:"\\\\" -colorspace gray -channel alpha -threshold 50% textures/font_${fontname}_$hex.png
+            else
+    			convert -background none -fill black -font "$fontfile" -pointsize $fontsize label:"$(echo -en "\\U$hex")" -colorspace gray -channel alpha -threshold 50% textures/font_${fontname}_$hex.png
+            fi
+ 		fi
+	done
+}
+
+mkdir textures
+
+# Reads all available code points in the font.
+codepoints=$(ttx -o - $fontfile | grep "<map code=" | cut -d \" -f 2)
+
+# Mandatory chars
+generate 0020 007f
+
+# generate space and null characters
+if [ ! -f "textures/font_${fontname}_0030.png" ]; then
+	echo "Error: Something wrong happened! Font was not generated!"
+	exit 1
+else
+	size=$(identify textures/font_${fontname}_0030.png | cut -d " " -f 3)
+	if ! [[ $fontHeight =~ $re ]] ; then
+		echo "Error: Something wrong happened! Generated files might be broken!"
+		exit 1
+	else
+        w=$(expr $(echo $size | cut -d x -f 1) - 1)
+        h=$(expr $(echo $size | cut -d x -f 2) - 1)
+        # Space char
+		convert -size $size xc:transparent -colorspace gray textures/font_${fontname}_0020.png
+        # Null char		
+        convert -size $size xc:transparent -colorspace gray -stroke black -fill transparent -strokewidth 1 -draw "rectangle 0,0 $w,$h" textures/font_${fontname}_0000.png
+	fi
+fi
+
+# Optional Unicode pages (see https://en.wikipedia.org/wiki/Unicode) :
+
+# 00a0-00ff Latin-1 Supplement (full)
+generate 00a0 00ff
+# 0100-017f Latin Extended-A (full)
+generate 0100 017f
+# 0370-03ff Greek (full)
+generate 0370 03ff
+# 0400-04ff Cyrilic (full)
+generate 0400 04ff
+# 2000-206f General Punctuation (Limited to Dashes)
+generate 2010 2015
+# 2000-206f General Punctuation (Limited to Quotes)
+generate 2018 201F
+# 20a0-20cf Currency Symbols (Limited to Euro symbol)
+generate 20ac 20ac
+
+
diff --git a/font_epilepsy/README.md b/font_epilepsy/README.md
index 992c55a..20798cd 100644
--- a/font_epilepsy/README.md
+++ b/font_epilepsy/README.md
@@ -1,10 +1,10 @@
 # Font Epilepsy
 
-Font mod for font_lib mod.
+Font mod for font_api mod.
 
 **Font**: EpilepsySansBold by Kreative Software under KREATIVE SOFTWARE RELAY FONTS FREE USE LICENSE version 1.2f.
 
-**Dependancies**:font_lib
+**Dependancies**:font_api
 
 **License**: LPGL for the cod, KREATIVE SOFTWARE RELAY FONTS FREE USE LICENSE version 1.2f for the font (see FONT LICENSE.txt)
 
diff --git a/font_epilepsy/depends.txt b/font_epilepsy/depends.txt
index c8e3a5b..7372f0d 100644
--- a/font_epilepsy/depends.txt
+++ b/font_epilepsy/depends.txt
@@ -1 +1 @@
-font_lib
+font_api
diff --git a/font_epilepsy/init.lua b/font_epilepsy/init.lua
index 25a093b..6dd7d74 100644
--- a/font_epilepsy/init.lua
+++ b/font_epilepsy/init.lua
@@ -4,7 +4,7 @@
 
 --]]
 
-font_lib.register_font(
+font_api.register_font(
 	'epilepsy',
 	14,
 	{ [0]=8, [32]=8, [33]=5, [34]=8, [35]=8, [36]=9, [37]=10, [38]=10, [39]=5, [40]=6, [41]=6, [42]=7, [43]=7, [44]=4, [45]=5, [46]=5, [47]=7, [48]=8, [49]=8, [50]=8, [51]=8, [52]=8, [53]=8, [54]=8, [55]=8, [56]=8, [57]=8, [58]=5, [59]=5, [60]=7, [61]=7, [62]=7, [63]=7, [64]=13, [65]=9, [66]=8, [67]=8, [68]=8, [69]=7, [70]=7, [71]=9, [72]=8, [73]=5, [74]=6, [75]=9, [76]=7, [77]=11, [78]=9, [79]=9, [80]=8, [81]=9, [82]=8, [83]=8, [84]=8, [85]=8, [86]=9, [87]=11, [88]=9, [89]=10, [90]=9, [91]=5, [92]=7, [93]=5, [94]=7, [95]=7, [96]=5, [97]=8, [98]=8, [99]=8, [100]=8, [101]=8, [102]=6, [103]=8, [104]=8, [105]=4, [106]=5, [107]=8, [108]=4, [109]=12, [110]=8, [111]=8, [112]=8, [113]=8, [114]=7, [115]=7, [116]=6, [117]=8, [118]=8, [119]=11, [120]=9, [121]=8, [122]=8, [123]=6, [124]=5, [125]=6, [126]=9, [160]=4, [161]=5, [162]=9, [163]=9, [164]=9, [165]=10, [166]=5, [167]=6, [168]=7, [169]=10, [170]=6, [171]=7, [172]=7, [173]=5, [174]=10, [175]=6, [176]=6, [177]=7, [178]=5, [179]=5, [180]=5, [181]=9, [182]=7, [183]=5, [184]=6, [185]=5, [186]=6, [187]=7, [188]=10, [189]=10, [190]=10, [191]=7, [192]=9, [193]=9, [194]=9, [195]=9, [196]=9, [197]=9, [198]=11, [199]=8, [200]=7, [201]=7, [202]=7, [203]=7, [204]=5, [205]=5, [206]=6, [207]=6, [208]=9, [209]=9, [210]=9, [211]=9, [212]=9, [213]=9, [214]=9, [215]=7, [216]=9, [217]=8, [218]=8, [219]=8, [220]=8, [221]=10, [222]=8, [223]=8, [224]=8, [225]=8, [226]=8, [227]=8, [228]=8, [229]=8, [230]=12, [231]=8, [232]=8, [233]=8, [234]=8, [235]=8, [236]=4, [237]=4, [238]=5, [239]=5, [240]=8, [241]=8, [242]=8, [243]=8, [244]=8, [245]=8, [246]=8, [247]=8, [248]=10, [249]=8, [250]=8, [251]=8, [252]=8, [253]=8, [254]=8, [255]=8, [256]=9, [257]=8, [258]=9, [259]=8, [260]=9, [261]=8, [262]=8, [263]=8, [264]=8, [265]=8, [266]=8, [267]=8, [268]=8, [269]=8, [270]=8, [271]=11, [272]=9, [273]=8, [274]=7, [275]=8, [276]=7, [277]=8, [278]=7, [279]=8, [280]=7, [281]=8, [282]=7, [283]=8, [284]=9, [285]=8, [286]=9, [287]=8, [288]=9, [289]=8, [290]=9, [291]=8, [292]=8, [293]=8, [294]=8, [295]=8, [296]=7, [297]=6, [298]=5, [299]=4, [300]=6, [301]=5, [302]=5, [303]=4, [304]=5, [305]=4, [306]=10, [307]=8, [308]=6, [309]=5, [310]=9, [311]=8, [312]=8, [313]=7, [314]=4, [315]=7, [316]=4, [317]=10, [318]=7, [319]=7, [320]=8, [321]=7, [322]=5, [323]=9, [324]=8, [325]=9, [326]=8, [327]=9, [328]=8, [329]=11, [330]=9, [331]=8, [332]=9, [333]=8, [334]=9, [335]=8, [336]=9, [337]=8, [338]=11, [339]=11, [340]=8, [341]=7, [342]=8, [343]=7, [344]=8, [345]=7, [346]=8, [347]=7, [348]=8, [349]=7, [350]=8, [351]=7, [352]=8, [353]=7, [354]=8, [355]=6, [356]=8, [357]=10, [358]=8, [359]=6, [360]=8, [361]=8, [362]=8, [363]=8, [364]=8, [365]=8, [366]=8, [367]=8, [368]=8, [369]=8, [370]=8, [371]=8, [372]=11, [373]=11, [374]=10, [375]=8, [376]=10, [377]=9, [378]=8, [379]=9, [380]=8, [381]=9, [382]=8, [383]=6, [884]=5, [885]=5, [890]=4, [894]=4, [900]=5, [901]=8, [902]=9, [903]=5, [904]=7, [905]=8, [906]=5, [908]=9, [910]=10, [911]=9, [912]=6, [913]=9, [914]=8, [915]=7, [916]=10, [917]=7, [918]=9, [919]=8, [920]=9, [921]=5, [922]=9, [923]=9, [924]=11, [925]=9, [926]=8, [927]=9, [928]=8, [929]=8, [931]=8, [932]=8, [933]=10, [934]=10, [935]=9, [936]=12, [937]=9, [938]=6, [939]=10, [940]=9, [941]=8, [942]=8, [943]=5, [944]=8, [945]=9, [946]=8, [947]=8, [948]=8, [949]=8, [950]=8, [951]=8, [952]=8, [953]=5, [954]=7, [955]=8, [956]=9, [957]=8, [958]=8, [959]=8, [960]=9, [961]=8, [962]=8, [963]=9, [964]=9, [965]=8, [966]=10, [967]=8, [968]=12, [969]=10, [970]=6, [971]=8, [972]=8, [973]=8, [974]=10, [976]=8, [977]=10, [978]=11, [979]=11, [980]=11, [981]=10, [982]=10, [983]=9, [984]=9, [985]=8, [986]=9, [987]=8, [988]=7, [989]=7, [990]=9, [991]=7, [992]=11, [993]=8, [994]=10, [995]=10, [996]=9, [997]=9, [998]=9, [999]=10, [1000]=8, [1001]=7, [1002]=9, [1003]=8, [1004]=8, [1005]=8, [1006]=10, [1007]=8, [1008]=9, [1009]=8, [1010]=8, [1011]=5, [1012]=9, [1013]=9, [1014]=9, [1015]=8, [1016]=8, [1017]=8, [1018]=11, [1019]=11, [1020]=8, [1021]=8, [1022]=8, [1023]=8, [1024]=7, [1025]=7, [1026]=10, [1027]=7, [1028]=9, [1029]=7, [1030]=5, [1031]=6, [1032]=6, [1033]=14, [1034]=13, [1035]=10, [1036]=9, [1037]=9, [1038]=10, [1039]=8, [1040]=9, [1041]=8, [1042]=8, [1043]=7, [1044]=10, [1045]=7, [1046]=12, [1047]=8, [1048]=9, [1049]=9, [1050]=9, [1051]=10, [1052]=11, [1053]=8, [1054]=9, [1055]=8, [1056]=8, [1057]=8, [1058]=8, [1059]=10, [1060]=10, [1061]=9, [1062]=8, [1063]=8, [1064]=12, [1065]=12, [1066]=11, [1067]=11, [1068]=8, [1069]=9, [1070]=12, [1071]=8, [1072]=8, [1073]=8, [1074]=8, [1075]=6, [1076]=10, [1077]=8, [1078]=12, [1079]=8, [1080]=9, [1081]=9, [1082]=7, [1083]=10, [1084]=11, [1085]=8, [1086]=8, [1087]=9, [1088]=8, [1089]=8, [1090]=8, [1091]=8, [1092]=12, [1093]=9, [1094]=8, [1095]=8, [1096]=10, [1097]=10, [1098]=10, [1099]=10, [1100]=7, [1101]=9, [1102]=10, [1103]=8, [1104]=8, [1105]=8, [1106]=8, [1107]=6, [1108]=9, [1109]=7, [1110]=4, [1111]=5, [1112]=5, [1113]=12, [1114]=11, [1115]=8, [1116]=7, [1117]=9, [1118]=8, [1119]=8, [1120]=12, [1121]=10, [1122]=8, [1123]=7, [1124]=11, [1125]=11, [1126]=10, [1127]=9, [1128]=13, [1129]=12, [1130]=10, [1131]=10, [1132]=13, [1133]=13, [1134]=8, [1135]=8, [1136]=12, [1137]=12, [1138]=9, [1139]=7, [1140]=11, [1141]=10, [1142]=11, [1143]=10, [1144]=18, [1145]=17, [1146]=11, [1147]=9, [1148]=12, [1149]=10, [1150]=12, [1151]=10, [1152]=8, [1153]=7, [1154]=7, [1155]=1, [1160]=14, [1161]=14, [1162]=9, [1163]=9, [1164]=8, [1165]=7, [1166]=8, [1167]=8, [1168]=7, [1169]=7, [1170]=7, [1171]=6, [1172]=8, [1173]=8, [1174]=12, [1175]=12, [1176]=8, [1177]=8, [1178]=9, [1179]=8, [1180]=9, [1181]=7, [1182]=9, [1183]=7, [1184]=12, [1185]=10, [1186]=8, [1187]=8, [1188]=11, [1189]=11, [1190]=12, [1191]=12, [1192]=11, [1193]=10, [1194]=8, [1195]=8, [1196]=8, [1197]=8, [1198]=10, [1199]=10, [1200]=10, [1201]=10, [1202]=9, [1203]=9, [1204]=11, [1205]=11, [1206]=8, [1207]=8, [1208]=9, [1209]=9, [1210]=8, [1211]=8, [1212]=11, [1213]=11, [1214]=11, [1215]=11, [1216]=5, [1217]=12, [1218]=12, [1219]=8, [1220]=8, [1221]=10, [1222]=10, [1223]=8, [1224]=8, [1225]=8, [1226]=8, [1227]=8, [1228]=8, [1229]=11, [1230]=11, [1232]=9, [1233]=8, [1234]=9, [1235]=8, [1236]=11, [1237]=12, [1238]=7, [1239]=8, [1240]=8, [1241]=8, [1242]=8, [1243]=8, [1244]=12, [1245]=12, [1246]=8, [1247]=8, [1248]=8, [1249]=8, [1250]=9, [1251]=9, [1252]=9, [1253]=9, [1254]=9, [1255]=8, [1256]=9, [1257]=8, [1258]=9, [1259]=8, [1260]=9, [1261]=9, [1262]=10, [1263]=8, [1264]=10, [1265]=8, [1266]=10, [1267]=8, [1268]=8, [1269]=8, [1270]=7, [1271]=6, [1272]=11, [1273]=10, [8208]=5, [8209]=5, [8210]=8, [8211]=7, [8212]=10, [8213]=12, [8216]=4, [8217]=4, [8218]=4, [8219]=4, [8220]=7, [8221]=7, [8222]=7, [8223]=7, [8364]=8 }
diff --git a/font_lib/API.md b/font_lib/API.md
deleted file mode 100644
index 1b79b55..0000000
--- a/font_lib/API.md
+++ /dev/null
@@ -1,110 +0,0 @@
-# Font Lib API
-This document describes Font Lib API. Font Lib creates textures for font display on entities.
-
-## Settings
-### default_font
-Name of the font to be used when no font is given. The font should be registered.
-If no default\_font given or if default\_font given but not registered, the first registered font will be used as default.
-
-## Provided methods
-### get\_text\_size
-**font\_lib.get\_text\_size(font\_name, text)**
-
-Computes size for a given font and text
-
-**font\_name**: Font name of registered font to use
-**text**: Text to be rendered
-**Returns**: rendered text width, height
-
-### make\_line\_texture
-**font\_lib.make\_line\_texture(font\_name, text, width, x, y)**
-
-Builds texture part for a text line
-
-**font\_name**: Font name of registered font to use
-**text**: Text to be rendered
-**texturew**: Width of the texture (extra text is not rendered)
-**x**: Starting x position in texture
-**y**: Vertical position of the line in texture
-**Returns**: Texture string
-
-### make\_multiline\_texture
-**font\_lib.make\_multiline\_texture(font\_name, text, width, height, maxlines, halign, valign, color)**
-
-Builds texture for a multiline colored text
-
-**font\_name**: Font name of registered font to use
-**text**: Text to be rendered
-**texturew**: Width of the texture (extra text will be truncated)
-**textureh**: Height of the texture
-**maxlines**: Maximum number of lines
-**halign**: Horizontal text align ("left", "right" or "center") (optional)
-**valign**: Vertical text align ("top", "bottom" or "center") (optional)
-**color**: Color of the text (optional)
-**Returns**: Texture string
-
-### register\_font
-**font\_lib.register_font(font\_name, height, widths)**
-
-Registers a new font in font_lib.
-
-**font\_name**: Name of the font to register (this name will be used to address the font later)
-If registering different sizes of the same font, add size in the font name (e.g. times\_10,  times\_12...).
-**height**: Font height in pixels (all font textures should have the same height)
-**widths** : Array of character widths in pixels, indexed by UTF codepoints
-
-Font must have a char 0 which will be used to display any unknown char.
-
-All textures corresponding to the indexes in **widths** array should be present in textures directory with a name matching the pattern :
-
-**font\_<font\_name>_<utf\_code>.png**
-
-**<font\_name>**: Name of the font as given in the first argument
-**<utf\_code>**: UTF code of the char in 4 hexadecimal digits
-
-To ease that declaration, a shell is provided to build a <font\_name>.lua file from the texture files (see provided tools).
-
-## Provided tools
-
-Still in early stage of development, these tools are helpers to create font mods.
-
-### make_font_texture.sh
-
-This scripts takes a .ttf file as input and create one .png file per char, that can be used as font texture. Launch it from your future font mod directory. 
-
-__Advice__
-
-This script works much better with pixels font, providing the correct height. There is no antialiasing at all, vector fonts and bad heights gives very ugly results.
-
-__Syntax__
-
-**make\_font\_texture.sh <fontfile> <fontname> <fontsize>**
-
-**<fontfile>**: A TTF font file to use to create textures.
-**<fontname>**: The font name to be used in font_lib (should be simple, with no spaces).
-**<fontsize>**: Font height to be rendered.
-
-### make_font_lua.sh
-
-This script analyses textures in textures directory and creates a font\_<font\_name>.lua files with a call to register_font with images information. Launch it from your future font mod directory. 
-
-Once the font\_<font\_name>.lua created, it can be included by a init.lua file or directly renamed to init.lua if you are creating a simple font mod.
-
-__Syntax__
-
-**make\_font_lua.sh <fontname>**
-
-**<fontname>**: The font name to be used in font_lib (same as given to make\_font\_texture.sh)
-
-### An exemple generating a font mod
-
-    mkdir font_myfont
-    cd font_myfont
-    /<path_to_font_lib>/tools/make_font_texture.sh myfont.ttf myfont 12
-    /<path_to_font_lib>/tools/make_font_lua.sh myfont
-    mv font_myfont.lua init.lua
-
-
-
-
-
diff --git a/font_lib/LICENSE.txt b/font_lib/LICENSE.txt
deleted file mode 100644
index 341c30b..0000000
--- a/font_lib/LICENSE.txt
+++ /dev/null
@@ -1,166 +0,0 @@
-                   GNU LESSER GENERAL PUBLIC LICENSE
-                       Version 3, 29 June 2007
-
- Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-
-  This version of the GNU Lesser General Public License incorporates
-the terms and conditions of version 3 of the GNU General Public
-License, supplemented by the additional permissions listed below.
-
-  0. Additional Definitions.
-
-  As used herein, "this License" refers to version 3 of the GNU Lesser
-General Public License, and the "GNU GPL" refers to version 3 of the GNU
-General Public License.
-
-  "The Library" refers to a covered work governed by this License,
-other than an Application or a Combined Work as defined below.
-
-  An "Application" is any work that makes use of an interface provided
-by the Library, but which is not otherwise based on the Library.
-Defining a subclass of a class defined by the Library is deemed a mode
-of using an interface provided by the Library.
-
-  A "Combined Work" is a work produced by combining or linking an
-Application with the Library.  The particular version of the Library
-with which the Combined Work was made is also called the "Linked
-Version".
-
-  The "Minimal Corresponding Source" for a Combined Work means the
-Corresponding Source for the Combined Work, excluding any source code
-for portions of the Combined Work that, considered in isolation, are
-based on the Application, and not on the Linked Version.
-
-  The "Corresponding Application Code" for a Combined Work means the
-object code and/or source code for the Application, including any data
-and utility programs needed for reproducing the Combined Work from the
-Application, but excluding the System Libraries of the Combined Work.
-
-  1. Exception to Section 3 of the GNU GPL.
-
-  You may convey a covered work under sections 3 and 4 of this License
-without being bound by section 3 of the GNU GPL.
-
-  2. Conveying Modified Versions.
-
-  If you modify a copy of the Library, and, in your modifications, a
-facility refers to a function or data to be supplied by an Application
-that uses the facility (other than as an argument passed when the
-facility is invoked), then you may convey a copy of the modified
-version:
-
-   a) under this License, provided that you make a good faith effort to
-   ensure that, in the event an Application does not supply the
-   function or data, the facility still operates, and performs
-   whatever part of its purpose remains meaningful, or
-
-   b) under the GNU GPL, with none of the additional permissions of
-   this License applicable to that copy.
-
-  3. Object Code Incorporating Material from Library Header Files.
-
-  The object code form of an Application may incorporate material from
-a header file that is part of the Library.  You may convey such object
-code under terms of your choice, provided that, if the incorporated
-material is not limited to numerical parameters, data structure
-layouts and accessors, or small macros, inline functions and templates
-(ten or fewer lines in length), you do both of the following:
-
-   a) Give prominent notice with each copy of the object code that the
-   Library is used in it and that the Library and its use are
-   covered by this License.
-
-   b) Accompany the object code with a copy of the GNU GPL and this license
-   document.
-
-  4. Combined Works.
-
-  You may convey a Combined Work under terms of your choice that,
-taken together, effectively do not restrict modification of the
-portions of the Library contained in the Combined Work and reverse
-engineering for debugging such modifications, if you also do each of
-the following:
-
-   a) Give prominent notice with each copy of the Combined Work that
-   the Library is used in it and that the Library and its use are
-   covered by this License.
-
-   b) Accompany the Combined Work with a copy of the GNU GPL and this license
-   document.
-
-   c) For a Combined Work that displays copyright notices during
-   execution, include the copyright notice for the Library among
-   these notices, as well as a reference directing the user to the
-   copies of the GNU GPL and this license document.
-
-   d) Do one of the following:
-
-       0) Convey the Minimal Corresponding Source under the terms of this
-       License, and the Corresponding Application Code in a form
-       suitable for, and under terms that permit, the user to
-       recombine or relink the Application with a modified version of
-       the Linked Version to produce a modified Combined Work, in the
-       manner specified by section 6 of the GNU GPL for conveying
-       Corresponding Source.
-
-       1) Use a suitable shared library mechanism for linking with the
-       Library.  A suitable mechanism is one that (a) uses at run time
-       a copy of the Library already present on the user's computer
-       system, and (b) will operate properly with a modified version
-       of the Library that is interface-compatible with the Linked
-       Version.
-
-   e) Provide Installation Information, but only if you would otherwise
-   be required to provide such information under section 6 of the
-   GNU GPL, and only to the extent that such information is
-   necessary to install and execute a modified version of the
-   Combined Work produced by recombining or relinking the
-   Application with a modified version of the Linked Version. (If
-   you use option 4d0, the Installation Information must accompany
-   the Minimal Corresponding Source and Corresponding Application
-   Code. If you use option 4d1, you must provide the Installation
-   Information in the manner specified by section 6 of the GNU GPL
-   for conveying Corresponding Source.)
-
-  5. Combined Libraries.
-
-  You may place library facilities that are a work based on the
-Library side by side in a single library together with other library
-facilities that are not Applications and are not covered by this
-License, and convey such a combined library under terms of your
-choice, if you do both of the following:
-
-   a) Accompany the combined library with a copy of the same work based
-   on the Library, uncombined with any other library facilities,
-   conveyed under the terms of this License.
-
-   b) Give prominent notice with the combined library that part of it
-   is a work based on the Library, and explaining where to find the
-   accompanying uncombined form of the same work.
-
-  6. Revised Versions of the GNU Lesser General Public License.
-
-  The Free Software Foundation may publish revised and/or new versions
-of the GNU Lesser General Public License from time to time. Such new
-versions will be similar in spirit to the present version, but may
-differ in detail to address new problems or concerns.
-
-  Each version is given a distinguishing version number. If the
-Library as you received it specifies that a certain numbered version
-of the GNU Lesser General Public License "or any later version"
-applies to it, you have the option of following the terms and
-conditions either of that published version or of any later version
-published by the Free Software Foundation. If the Library as you
-received it does not specify a version number of the GNU Lesser
-General Public License, you may choose any version of the GNU Lesser
-General Public License ever published by the Free Software Foundation.
-
-  If the Library as you received it specifies that a proxy can decide
-whether future versions of the GNU Lesser General Public License shall
-apply, that proxy's public statement of acceptance of any version is
-permanent authorization for you to choose that version for the
-Library.
-
diff --git a/font_lib/README.md b/font_lib/README.md
deleted file mode 100644
index 6b53a6b..0000000
--- a/font_lib/README.md
+++ /dev/null
@@ -1,14 +0,0 @@
-# Font Lib
-
-This library for font display on entities (to be used with display_lib for sign creation).
-
-**Dependancies**: default
-
-**License**: LGPL
-
-(Default font taken from VanessaE's homedecor/signs_lib, originally under WTFPL)
-
-**API**: See [API.md](https://github.com/pyrollo/display_modpack/blob/master/font_lib/API.md) document please.
-
-For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?t=13563) at the Minetest forums.
-
diff --git a/font_lib/copyright.txt b/font_lib/copyright.txt
deleted file mode 100644
index ceb5446..0000000
--- a/font_lib/copyright.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-Code by Pierre-Yves Rollo (pyrollo)
-Contributors:
-Andrzej Pieńkowski (apienk): Unicode support and tool for creating texturess
diff --git a/font_lib/depends.txt b/font_lib/depends.txt
deleted file mode 100644
index e69de29..0000000
diff --git a/font_lib/init.lua b/font_lib/init.lua
deleted file mode 100644
index 76a6b38..0000000
--- a/font_lib/init.lua
+++ /dev/null
@@ -1,340 +0,0 @@
---[[
-    font_lib mod for Minetest - Library to add font display capability 
-    to display_lib mod. 
-    (c) Pierre-Yves Rollo
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
---]]
-
--- Global variables
--------------------
-
-font_lib = {}
-font_lib.name = minetest.get_current_modname()
-font_lib.path = minetest.get_modpath(font_lib.name)
-font_lib.registered_fonts = {}
-
--- Local variables
-------------------
-
-local default_font = false
-
--- Local functions
-------------------
-
--- Split multiline text into array of lines, with <maxlines> maximum lines.
-
-local function split_lines(text, maxlines)
-	local splits = text:split("\n")
-	if maxlines then
-		local lines = {}
-		for num = 1,maxlines do
-			lines[num] = splits[num]
-		end
-		return lines
-	else
-		return splits
-	end
-end
-
--- Gets a default (settings or fist font)
-
-local function get_default_font()
-	-- First call
-	if default_font == false then
-		default_font = nil
-
-		-- First, try with settings
-		local settings_font = minetest.settings:get("default_font")
-
-		if settings_font ~= nil and settings_font ~= "" then
-			default_font = font_lib.registered_fonts[settings_font]
-
-			if default_font == nil then
-				minetest.log("warning", "Default font in settings (\""..
-				             settings_font.."\") is not registered.")
-			end
-		end
-
-		-- If failed, choose first font
-		if default_font == nil then
-			for _, font in pairs(font_lib.registered_fonts) do
-				default_font = font
-				break
-			end
-		end
-
-		-- Error, no font registered
-		if default_font == nil then
-			minetest.log("error",
-			             "No font registred, unable to choose a default font.")
-		end
-	end
-
-	return default_font
-end
-
--- Returns font properties to be used according to font_name
-
-local function get_font(font_name)
-	local font = font_lib.registered_fonts[font_name]
-
-	if font == nil then
-		local message
-
-		if font_name == nil then
-			message = "No font given"
-		else
-			message = "Font \""..font_name.."\" unregistered"
-		end
-
-		font = get_default_font()
-
-		if font ~= nil then
-			minetest.log("info", message..", using font \""..font.name.."\".")
-		end
-	end
-
-	return font
-end
-
--- Returns next char, managing ascii and unicode plane 0 (0000-FFFF).
-
-local function get_next_char(text, pos)
-
-	local msb = text:byte(pos)
-	-- 1 byte char, ascii equivalent codepoints
-	if msb < 0x80 then
-	    return msb, pos + 1
-    end
-
-	-- 4 bytes char not managed (Only 16 bits codepoints are managed)
-	if msb >= 0xF0 then
-		return 0, pos + 4
-	end
-
-	-- 3 bytes char
-	if msb >= 0xE0 then
-		return (msb - 0xE0) * 0x1000
-		       + text:byte(pos + 1) % 0x40 * 0x40
-		       + text:byte(pos + 2) % 0x40,
-		       pos + 3
-	end
-
-	-- 2 bytes char (little endian)
-	if msb >= 0xC2 then
-		return (msb - 0xC2) * 0x40 + text:byte(pos + 1),
-		       pos + 2
-	end
-
-    -- Not an UTF char
-	return 0, pos + 1
-end
-
--- API functions
-----------------
-
--- Computes text size for a given font and text (ignores new lines)
--- @param font_name Font to be used
--- @param text Text to be rendered
--- @return Rendered text (width, height)
-
-function font_lib.get_text_size(font_name, text)
-	local char
-	local width = 0
-    local pos = 1
-	local font = get_font(font_name)
-
-	if font == nil then
-		return 0, 0
-	else
-		while pos <= #text do
-			char, pos = get_next_char(text, pos)
-			-- Replace chars with no texture by the NULL(0) char
-			if font.widths[char] ~= nil then
-				width = width + font.widths[char]
-			else
-				width = width + font.widths[0]
-			end
-		end
-	end
-
-	return width, font.height
-end
-
---- Builds texture part for a text line
--- @param font_name Font to be used
--- @param text Text to be rendered
--- @param width Width of the texture (extra text is not rendered)
--- @param x Starting x position in texture
--- @param y Vertical position of the line in texture
--- @return Texture string
-
-function font_lib.make_line_texture(font_name, text, width, x, y)
-	local texture = ""
-	local char
-	local pos = 1
-	local font = get_font(font_name)
-
-	if font ~= nil then
-		while pos <= #text do
-			char, pos = get_next_char(text, pos)
-
-			-- Replace chars with no texture by the NULL(0) char
-			if font.widths[char] == nil then
-                print(string.format("["..font_lib.name
-                                    .."] Missing char %d (%04x)",char,char))
-                char = 0
-			end
-
-			-- Add image only if it is visible (at least partly)
-			if x + font.widths[char] >= 0 and x <= width then
-				texture = texture..
-					string.format(":%d,%d=font_%s_%04x.png",
-					              x, y, font.name, char)
-			end
-			x = x + font.widths[char]
-		end
-	end
-
-	return texture
-end
-
---- Builds texture for a multiline colored text
--- @param font_name Font to be used
--- @param text Text to be rendered
--- @param texturew Width of the texture (extra text will be truncated)
--- @param textureh Height of the texture
--- @param maxlines Maximum number of lines
--- @param halign Horizontal text align ("left"/"center"/"right") (optional)
--- @param valign Vertical text align ("top"/"center"/"bottom") (optional)
--- @param color Color of the text (optional)
--- @return Texture string
-
-function font_lib.make_multiline_texture(font_name, text, width, height, 
-                                         maxlines, halign, valign, color)
-	local texture = ""
-	local lines = {}
-    local textheight = 0
-	local y, w, h
-
-    for num, line in pairs(split_lines(text, maxlines)) do
-        w, h = font_lib.get_text_size(font_name, line)
-        lines[num] = { text = line, width = w, height = h, }
-        textheight = textheight + h
-    end
-
-    if #lines then
-        if valign == "top" then
-            y = 0
-        elseif valign == "bottom" then
-            y = height - textheight
-        else
-            y = (height - textheight) / 2
-        end
-    end
-
-	for _, line in pairs(lines) do
-		if halign == "left" then
-			texture = texture..
-				font_lib.make_line_texture(font_name, line.text, width,
-				0, y)
-		elseif halign == "right" then
-			texture = texture..
-				font_lib.make_line_texture(font_name, line.text, width,
-				width - line.width, y)
-		else
-			texture = texture..
-				font_lib.make_line_texture(font_name, line.text, width,
-				(width - line.width) / 2, y)
-		end
-		y = y + line.height
-	end
-
-	texture = string.format("[combine:%dx%d", width, height)..texture
-	if color then texture = texture.."^[colorize:"..color end
-	return texture
-end
-
---- Register a new font
--- Textures corresponding to the font should be named after following patern :
--- font_<name>_<code>.png
--- <name> : name of the font
--- <code> : 4 digit hexadecimal unicode of the char
--- @param font_name Name of the font to register
--- If registering different sizes of the same font, add size in the font name
--- (e.g. times_10, times_12...).
--- @param height Font height in pixels
--- @param widths Array of character widths in pixels, indexed by UTF codepoints
-
-function font_lib.register_font(font_name, height, widths)
-
-	if font_lib.registered_fonts[font_name] ~= nil then
-		minetest.log("error", "Font \""..font_name.."\" already registered.")
-		return
-	end
-
-	if height == nil or height <= 0 then
-		minetest.log("error", "Font \""..font_name..
-		             "\" must have a positive height.")
-		return
-	end
-
-	if type(widths) ~= "table" then
-		minetest.log("error", "Font \""..font_name..
-		             "\" must have a widths array.")
-		return
-	end
-
-	if widths[0] == nil then
-		minetest.log("error", "Font \""..font_name..
-		             "\" must have a char with codepoint 0 (=unknown char).")
-		return
-	end
-
-	font_lib.registered_fonts[font_name] =
-		{ name = font_name, height = height, widths = widths }
-
-	-- Force to choose again default font
-	-- (allows use of fonts registered after start)
-	default_font = false
-end
-
---- Standard on_display_update entity callback.
--- Node should have a corresponding display_entity with size, resolution and 
--- maxlines fields and optionally halign, valign and color fields
--- @param pos Node position
--- @param objref Object reference of entity
-
-function font_lib.on_display_update(pos, objref)
-	local meta = minetest.get_meta(pos)
-	local text = meta:get_string("display_text")
-	local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
-	local entity = objref:get_luaentity()
-
-	if entity and ndef.display_entities[entity.name] then
-		local def = ndef.display_entities[entity.name]
-		local font = get_font(def.font_name)
-
-		objref:set_properties({ 
-			textures={font_lib.make_multiline_texture(
-				def.font_name, text,
-				def.size.x * def.resolution.x * font.height,
-				def.size.y * def.resolution.y * font.height,
-				def.maxlines, def.halign, def.valign, def.color)},
-			visual_size = def.size
-		})
-	end
-end
-
diff --git a/font_lib/settingtypes.txt b/font_lib/settingtypes.txt
deleted file mode 100644
index d111159..0000000
--- a/font_lib/settingtypes.txt
+++ /dev/null
@@ -1 +0,0 @@
-default_font(Default font) string
diff --git a/font_lib/tools/make_font_lua.sh b/font_lib/tools/make_font_lua.sh
deleted file mode 100755
index 607ff95..0000000
--- a/font_lib/tools/make_font_lua.sh
+++ /dev/null
@@ -1,56 +0,0 @@
-#!/bin/bash
-
-scriptname=$(basename $0)
-identify="identify"
-
-font_name=$1
-
-for f in textures/font_${font_name}_????.png
-do
-    if [[ $f =~ textures/font_${font_name}_([0-9a-fA-F]{4}).png ]]
-    then
-        code=$((16#${BASH_REMATCH[1]}))
-        size=$(identify $f | cut -d " " -f 3)
-        w=$(echo $size | cut -d "x" -f 1)
-        h=$(echo $size | cut -d "x" -f 2)  
-
-        if [ -z "$font_height" ]
-        then
-        	font_height=$h
-        else
-        	if [ $font_height -ne $h ]
-        	then
-        		echo "Error : $f as height of $h pixels, previous textures have a height of $font_height pixels. All textures should have the same height."
-        	fi
-        fi
-
-        if [ -z "$font_widths" ]
-        then
-      	    font_widths="[$code]=$w"
-      	else
-      	    font_widths="$font_widths, [$code]=$w"
-      	fi
-    fi
-done
-
-echo "--[[
-
-$luafile generated by $scriptname $(LANG=en_US date)
-
---]]
-
-font_lib.register_font(
-	'$font_name',
-	$font_height,
-	{ $font_widths }
-);
-" > font_$font_name.lua
-
-if grep -q font_lib depends.txt &>/dev/null
-then
-	echo "font_lib already in depends.txt."
-else
-	echo "adding font_lib to depends.txt."
-	echo "font_lib" >> depends.txt
-fi
-
diff --git a/font_lib/tools/make_font_textures.sh b/font_lib/tools/make_font_textures.sh
deleted file mode 100755
index ade2e32..0000000
--- a/font_lib/tools/make_font_textures.sh
+++ /dev/null
@@ -1,111 +0,0 @@
-#!/bin/bash
-
-# This program generates a bitmap font for font_lib mod for Minetest game.
-# (c) Andrzej Pieńkowski <pienkowski.andrzej@gmail.com>
-# (c) Pierre-Yves Rollo <dev@pyrollo.com>
-# License: GPL
-
-usage() {
-	echo "Usage: $0 fontfile fontname fontsize"
-	echo "fontfile: A TTF font file to use to create textures."
-	echo "fontname: The font name to be used in font_lib (should be simple, with no spaces)."
-	echo "fontsize: Font height to be rendered."
-}
-
-if [ $# -ne 3 ] 
-then
-	usage
-	exit 1
-fi
-
-fontfile=$1
-fontname=$2
-fontsize=$3
-
-if [ ! -r "$fontfile" ]
-then
-	echo "$fontfile not readable."
-	exit 1
-fi
-
-# check imagemagick
-hash convert &>/dev/null
-if [ $? -eq 1 ]; then
-	echo -e "Error: This program requires convert from ImageMagick! Please install it by typing 'sudo apt-get install imagemagick' in terminal."
-	abort=1
-fi
-
-# check ttx
-hash ttx &>/dev/null
-if [ $? -eq 1 ]; then
-	echo -e "Error: This program requires ttx from FontTools! Please install it by typing 'sudo apt-get install fonttools' in terminal."
-	abort=1
-fi
-
-if [ $abort ]
-then
-	exit 1
-fi
-
-generate() {
-	for i in $(seq $((0x$1)) $((0x$2)))
-	do
-		if echo "$codepoints" | grep -qi $(printf "0x%x" $i)
-		then
-		    hex=$(printf "%04x" $i)
-		    echo -e "Generating textures/font_${fontname}_$hex.png file for \"\\U$hex\" char."
-            if [[ "$hex" == "005c" ]] # Backslash char
-            then
-    			convert -background none -fill black -font "$fontfile" -pointsize $fontsize label:"\\\\" -colorspace gray -channel alpha -threshold 50% textures/font_${fontname}_$hex.png
-            else
-    			convert -background none -fill black -font "$fontfile" -pointsize $fontsize label:"$(echo -en "\\U$hex")" -colorspace gray -channel alpha -threshold 50% textures/font_${fontname}_$hex.png
-            fi
- 		fi
-	done
-}
-
-mkdir textures
-
-# Reads all available code points in the font.
-codepoints=$(ttx -o - $fontfile | grep "<map code=" | cut -d \" -f 2)
-
-# Mandatory chars
-generate 0020 007f
-
-# generate space and null characters
-if [ ! -f "textures/font_${fontname}_0030.png" ]; then
-	echo "Error: Something wrong happened! Font was not generated!"
-	exit 1
-else
-	size=$(identify textures/font_${fontname}_0030.png | cut -d " " -f 3)
-	if ! [[ $fontHeight =~ $re ]] ; then
-		echo "Error: Something wrong happened! Generated files might be broken!"
-		exit 1
-	else
-        w=$(expr $(echo $size | cut -d x -f 1) - 1)
-        h=$(expr $(echo $size | cut -d x -f 2) - 1)
-        # Space char
-		convert -size $size xc:transparent -colorspace gray textures/font_${fontname}_0020.png
-        # Null char		
-        convert -size $size xc:transparent -colorspace gray -stroke black -fill transparent -strokewidth 1 -draw "rectangle 0,0 $w,$h" textures/font_${fontname}_0000.png
-	fi
-fi
-
-# Optional Unicode pages (see https://en.wikipedia.org/wiki/Unicode) :
-
-# 00a0-00ff Latin-1 Supplement (full)
-generate 00a0 00ff
-# 0100-017f Latin Extended-A (full)
-generate 0100 017f
-# 0370-03ff Greek (full)
-generate 0370 03ff
-# 0400-04ff Cyrilic (full)
-generate 0400 04ff
-# 2000-206f General Punctuation (Limited to Dashes)
-generate 2010 2015
-# 2000-206f General Punctuation (Limited to Quotes)
-generate 2018 201F
-# 20a0-20cf Currency Symbols (Limited to Euro symbol)
-generate 20ac 20ac
-
-
diff --git a/ontime_clocks/README.md b/ontime_clocks/README.md
index 2254a43..d9db998 100644
--- a/ontime_clocks/README.md
+++ b/ontime_clocks/README.md
@@ -4,7 +4,7 @@ This mod provides clocks that display real ingame time.
 
 For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?t=19365) at the Minetest forums.
 
-**Dependancies**: display_lib, default
+**Dependancies**: display_api, default
 
 **License**: Code under LGPL, textures under CC-BY-SA
 
diff --git a/ontime_clocks/common.lua b/ontime_clocks/common.lua
index 39462d3..cced299 100644
--- a/ontime_clocks/common.lua
+++ b/ontime_clocks/common.lua
@@ -19,7 +19,7 @@
 --]]
 
 -- Entity for time display
-display_lib.register_display_entity("ontime_clocks:display")
+display_api.register_display_entity("ontime_clocks:display")
 
 function ontime_clocks.get_h24()
 	return math.floor(minetest.get_timeofday()*24)%24
diff --git a/ontime_clocks/depends.txt b/ontime_clocks/depends.txt
index bdefee1..07a2ec1 100644
--- a/ontime_clocks/depends.txt
+++ b/ontime_clocks/depends.txt
@@ -1,5 +1,5 @@
 default
 dye
-display_lib
+display_api
 
 intllib?
diff --git a/ontime_clocks/nodes.lua b/ontime_clocks/nodes.lua
index d8007e8..aa3583d 100644
--- a/ontime_clocks/nodes.lua
+++ b/ontime_clocks/nodes.lua
@@ -35,7 +35,7 @@ minetest.register_node("ontime_clocks:green_digital", {
 		wall_top = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 } 
 	},
 	tiles = {"ontime_clocks_digital.png"},
-	groups = {oddly_breakable_by_hand = 1, not_blocking_trains = 1, display_lib_node = 1},
+	groups = {oddly_breakable_by_hand = 1, not_blocking_trains = 1, display_modpack_node = 1},
 	display_entities = {
 		["ontime_clocks:display"] = {
 			depth = 13/32 - 0.01,
@@ -45,17 +45,17 @@ minetest.register_node("ontime_clocks:green_digital", {
 						"#040", "#0F0", ontime_clocks.get_h24(), ontime_clocks.get_m12()))
 			end },
 	},
-	on_place = display_lib.on_place,
-	on_construct = display_lib.on_construct,
-	on_destruct = display_lib.on_destruct,
-	on_rotate = display_lib.on_rotate,
+	on_place = display_api.on_place,
+	on_construct = display_api.on_construct,
+	on_destruct = display_api.on_destruct,
+	on_rotate = display_api.on_rotate,
 })
 
 minetest.register_abm({
 	nodenames = {"ontime_clocks:green_digital"},
 	interval = 5,
 	chance = 1,
-	action = display_lib.update_entities,
+	action = display_api.update_entities,
 })
 
 -- Red digital clock
@@ -73,7 +73,7 @@ minetest.register_node("ontime_clocks:red_digital", {
 		wall_top = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 } 
 	},
 	tiles = {"ontime_clocks_digital.png"},
-	groups = {oddly_breakable_by_hand = 1, not_blocking_trains = 1, display_lib_node = 1},
+	groups = {oddly_breakable_by_hand = 1, not_blocking_trains = 1, display_modpack_node = 1},
 	display_entities = {
 		["ontime_clocks:display"] = {
 			depth = 13/32 - 0.01,
@@ -83,17 +83,17 @@ minetest.register_node("ontime_clocks:red_digital", {
 						"#400", "#F00", ontime_clocks.get_h24(), ontime_clocks.get_m12()))
 			end },
 	},
-	on_place = display_lib.on_place,
-	on_construct = display_lib.on_construct,
-	on_destruct = display_lib.on_destruct,
-	on_rotate = display_lib.on_rotate,
+	on_place = display_api.on_place,
+	on_construct = display_api.on_construct,
+	on_destruct = display_api.on_destruct,
+	on_rotate = display_api.on_rotate,
 })
 
 minetest.register_abm({
 	nodenames = {"ontime_clocks:red_digital"},
 	interval = 5,
 	chance = 1,
-	action = display_lib.update_entities,
+	action = display_api.update_entities,
 })
 
 
@@ -111,7 +111,7 @@ minetest.register_node("ontime_clocks:white", {
 		wall_top = { -7/16, 0.5, -7/16, 7/16, 7/16, 7/16},    
 	},
 	tiles = {"ontime_clocks_white.png"},
-	groups = {choppy = 1, oddly_breakable_by_hand = 1, not_blocking_trains = 1, display_lib_node = 1},
+	groups = {choppy = 1, oddly_breakable_by_hand = 1, not_blocking_trains = 1, display_modpack_node = 1},
 	display_entities = { 
 		["ontime_clocks:display"] = {
 			depth = 6/16 - 0.01,
@@ -121,17 +121,17 @@ minetest.register_node("ontime_clocks:white", {
 						"#000", 36, ontime_clocks.get_h12(), ontime_clocks.get_m12()))
 			end },
 	},
-	on_place = display_lib.on_place,
-	on_construct = display_lib.on_construct,
-	on_destruct = display_lib.on_destruct,
-	on_rotate = display_lib.on_rotate,
+	on_place = display_api.on_place,
+	on_construct = display_api.on_construct,
+	on_destruct = display_api.on_destruct,
+	on_rotate = display_api.on_rotate,
 })
 
 minetest.register_abm({
 	nodenames = {"ontime_clocks:white"},
 	interval = 5,
 	chance = 1,
-	action = display_lib.update_entities,
+	action = display_api.update_entities,
 })
 
 minetest.register_node("ontime_clocks:frameless_black", {
@@ -148,7 +148,7 @@ minetest.register_node("ontime_clocks:frameless_black", {
 		wall_top = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 } 
 	},
 	tiles = {"ontime_clocks_frameless.png"},
-	groups = {choppy = 1, oddly_breakable_by_hand = 1, not_blocking_trains = 1, display_lib_node = 1},
+	groups = {choppy = 1, oddly_breakable_by_hand = 1, not_blocking_trains = 1, display_modpack_node = 1},
 	display_entities = { 
 		["ontime_clocks:display"] = {
 			depth = 7/16,
@@ -158,17 +158,17 @@ minetest.register_node("ontime_clocks:frameless_black", {
 						"#000", 48, ontime_clocks.get_h12(), ontime_clocks.get_m12()))
 			end },
 	},
-	on_place = display_lib.on_place,
-	on_construct = display_lib.on_construct,
-	on_destruct = display_lib.on_destruct,
-	on_rotate = display_lib.on_rotate,
+	on_place = display_api.on_place,
+	on_construct = display_api.on_construct,
+	on_destruct = display_api.on_destruct,
+	on_rotate = display_api.on_rotate,
 })
 
 minetest.register_abm({
 	nodenames = {"ontime_clocks:frameless_black"},
 	interval = 5,
 	chance = 1,
-	action = display_lib.update_entities,
+	action = display_api.update_entities,
 })
 
 minetest.register_node("ontime_clocks:frameless_gold", {
@@ -185,7 +185,7 @@ minetest.register_node("ontime_clocks:frameless_gold", {
 		wall_top = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 } 
 	},
 	tiles = {"ontime_clocks_frameless.png^[colorize:#FF0"},
-	groups = {choppy = 1, oddly_breakable_by_hand = 1, not_blocking_trains = 1, display_lib_node = 1},
+	groups = {choppy = 1, oddly_breakable_by_hand = 1, not_blocking_trains = 1, display_modpack_node = 1},
 	display_entities = { 
 		["ontime_clocks:display"] = {
 			depth = 7/16,
@@ -195,17 +195,17 @@ minetest.register_node("ontime_clocks:frameless_gold", {
 						"#FF0", 48, ontime_clocks.get_h12(), ontime_clocks.get_m12()))
 			end },
 	},
-	on_place = display_lib.on_place,
-	on_construct = display_lib.on_construct,
-	on_destruct = display_lib.on_destruct,
-	on_rotate = display_lib.on_rotate,
+	on_place = display_api.on_place,
+	on_construct = display_api.on_construct,
+	on_destruct = display_api.on_destruct,
+	on_rotate = display_api.on_rotate,
 })
 
 minetest.register_abm({
 	nodenames = {"ontime_clocks:frameless_gold"},
 	interval = 5,
 	chance = 1,
-	action = display_lib.update_entities,
+	action = display_api.update_entities,
 })
 
 minetest.register_node("ontime_clocks:frameless_white", {
@@ -222,7 +222,7 @@ minetest.register_node("ontime_clocks:frameless_white", {
 		wall_top = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 } 
 	},
 	tiles = {"ontime_clocks_frameless.png^[colorize:#FFF"},
-	groups = {choppy = 1, oddly_breakable_by_hand = 1, not_blocking_trains = 1, display_lib_node = 1},
+	groups = {choppy = 1, oddly_breakable_by_hand = 1, not_blocking_trains = 1, display_modpack_node = 1},
 	display_entities = { 
 		["ontime_clocks:display"] = {
 			depth = 7/16,
@@ -232,15 +232,15 @@ minetest.register_node("ontime_clocks:frameless_white", {
 						"#FFF", 48, ontime_clocks.get_h12(), ontime_clocks.get_m12()))
 			end },
 	},
-	on_place = display_lib.on_place,
-	on_construct = display_lib.on_construct,
-	on_destruct = display_lib.on_destruct,
-	on_rotate = display_lib.on_rotate,
+	on_place = display_api.on_place,
+	on_construct = display_api.on_construct,
+	on_destruct = display_api.on_destruct,
+	on_rotate = display_api.on_rotate,
 })
 
 minetest.register_abm({
 	nodenames = {"ontime_clocks:frameless_white"},
 	interval = 5,
 	chance = 1,
-	action = display_lib.update_entities,
+	action = display_api.update_entities,
 })
diff --git a/signs/common.lua b/signs/common.lua
index 3665ab5..2b40db2 100644
--- a/signs/common.lua
+++ b/signs/common.lua
@@ -21,113 +21,40 @@
 local S = signs.intllib
 local F = function(...) return minetest.formspec_escape(S(...)) end
 
-function signs.set_display_text(pos,text)
-	local meta = minetest.get_meta(pos)
-	meta:set_string("display_text", text)
-	meta:set_string("infotext", "\""..text.."\"")
-	display_lib.update_entities(pos)
-end
 
-function signs.set_formspec(pos)
-	local meta = minetest.get_meta(pos)
-	local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
-	if ndef and ndef.display_entities and ndef.display_entities["signs:display_text"] then
-		local maxlines = ndef.display_entities["signs:display_text"].maxlines
-		local formspec
-
-		if maxlines == 1 then
-			formspec = "size[6,3]"..
-				default.gui_bg .. default.gui_bg_img .. default.gui_slots ..
-				"field[0.5,0.7;5.5,1;display_text;"..F("Text")..";${display_text}]"..
-				"button_exit[2,2;2,1;ok;"..F("Write").."]"
-		else
-			local extralabel = ""
-			if maxlines then
-				extralabel = F(" (first %s lines only)"):format(maxlines)
-			end
-
-			formspec = "size[6,4]"..
-				default.gui_bg .. default.gui_bg_img .. default.gui_slots ..
-				"textarea[0.5,0.7;5.5,2;display_text;"..F("Text")..""..extralabel..";${display_text}]"..
-				"button_exit[2,3;2,1;ok;"..F("Write").."]"
-		end
+--Backwards compatibility functions
 
-		meta:set_string("formspec", formspec)
-	end
+signs.set_display_text = function(...)
+	minetest.log("warning", "signs.set_display_text() is deprecated, please use signs_api.set_display_text() instead.")
+	return signs_api.set_display_text(...)
 end
 
-function signs.on_receive_fields(pos, formname, fields, player)
-	if not minetest.is_protected(pos, player:get_player_name()) then
-		if fields and (fields.ok or fields.key_enter) then
-			signs.set_display_text(pos, fields.display_text)
-		end
-	end
+signs.set_formspec = function(...)
+	minetest.log("warning", "signs.set_formspec() is deprecated, please use signs_api.set_formspec() instead.")
+	return  signs_api.set_formspec(...)
 end
 
--- On place callback for direction signs 
--- (chooses which sign according to look direction)
-function signs.on_place_direction(itemstack, placer, pointed_thing)
-	local name = itemstack:get_name()
-	local ndef = minetest.registered_nodes[name]
-
-    local bdir = {x = pointed_thing.under.x - pointed_thing.above.x,
-                  y = pointed_thing.under.y - pointed_thing.above.y,
-                  z = pointed_thing.under.z - pointed_thing.above.z}
-	local pdir = placer:get_look_dir()
-
-	local ndir, test
-
-	if ndef.paramtype2 == "facedir" then
-		if bdir.x == 0 and bdir.z == 0 then
-			-- Ceiling or floor pointed (facedir chosen from player dir)
-			ndir = minetest.dir_to_facedir({x=pdir.x, y=0, z=pdir.z})
-		else
-			-- Wall pointed
-			ndir = minetest.dir_to_facedir(bdir)
-		end
-
-		test = {[0]=-pdir.x, pdir.z, pdir.x, -pdir.z}
-    end
-
-	if ndef.paramtype2 == "wallmounted" then
-		ndir = minetest.dir_to_wallmounted(bdir)
-		if ndir == 0 or ndir == 1 then
-			-- Ceiling or floor
-			ndir = minetest.dir_to_wallmounted({x=pdir.x, y=0, z=pdir.z})
-		end
-
-		test = {0, pdir.z, -pdir.z, -pdir.x, pdir.x}
-	end
+signs.on_receive_fields = function(...)
+	minetest.log("warning", "signs.on_receive_fields() is deprecated, please use signs_api.on_receive_fields() instead.")
+	return  signs_api.on_receive_fields(...)
+end
 
-	-- Only for direction signs
-	if ndef.signs_other_dir then
-		if test[ndir] > 0 then
-			itemstack:set_name(ndef.signs_other_dir)
-		end
-		itemstack = minetest.item_place(itemstack, placer, pointed_thing, ndir)
-		itemstack:set_name(name)
+signs.on_place_direction = function(...)
+	minetest.log("warning", "signs.on_place_direction() is deprecated, please use signs_api.on_place_direction() instead.")
+	return  signs_api.on_place_direction(...)
+end
 
-		return itemstack
-	else
-		return minetest.item_place(itemstack, placer, pointed_thing, ndir)
-	end
+signs.on_rotate = function(...)
+	minetest.log("warning", "signs.on_rotate() is deprecated, please use signs_api.on_rotate() instead.")
+	return  signs_api.on_rotate(...)
 end
 
--- Handles screwdriver rotation. Direction is affected for direction signs
-function signs.on_rotate(pos, node, player, mode, new_param2)
-	if mode == 2 then
-    	local ndef = minetest.registered_nodes[node.name]
-	    if ndef.signs_other_dir then
-		    minetest.swap_node(pos, {name = ndef.signs_other_dir, 
-                param1 = node.param1, param2 = node.param2})
-			display_lib.update_entities(pos)
-	    end
-	else
-        display_lib.on_rotate(pos, node, user, mode, new_param2)
-	end
-    return false;
+signs.register_sign = function(...)
+	minetest.log("warning", "signs.register_sign() is deprecated, please use signs_api.register_sign() instead.")
+	return  signs_api.register_sign(...)
 end
 
+
 -- Generic callback for show_formspec displayed formspecs of "sign" mod
 
 minetest.register_on_player_receive_fields(function(player, formname, fields)
@@ -142,59 +69,3 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 		end
 	end
 end)
-
-function signs.register_sign(mod, name, model)
-	-- Default fields
-	local fields = {
-		sunlight_propagates = true,
-		paramtype = "light",
-		paramtype2 = "facedir",
-		drawtype = "nodebox",
-		node_box = {
-			type = "fixed",
-			fixed = {-model.width/2, -model.height/2, 0.5,
-					 model.width/2, model.height/2, 0.5 - model.depth},
-		},
-		groups = {choppy=2, dig_immediate=2, not_blocking_trains = 1, display_lib_node = 1},
-		sounds = default.node_sound_defaults(),
-		display_entities = {
-			["signs:display_text"] = {
-					on_display_update = font_lib.on_display_update,
-					depth = 0.5 - display_lib.entity_spacing - model.depth,
-					size = { x = model.width, y = model.height },
-					resolution = { x = 64, y = 64 },
-					maxlines = 1,
-			},
-
-		},
-		on_place = display_lib.on_place,
-		on_construct = 	function(pos)
-							signs.set_formspec(pos)
-							display_lib.on_construct(pos)
-						end,
-		on_destruct = display_lib.on_destruct,
-		on_rotate = signs.on_rotate,
- 		on_receive_fields =  signs.on_receive_fields,
-		on_punch = function(pos, node, player, pointed_thing) display_lib.update_entities(pos) end,
-	}
-
-	-- Node fields override
-	for key, value in pairs(model.node_fields) do
-		if key == "groups" then
-			for key2, value2 in pairs(value) do
-				fields[key][key2] = value2
-			end
-		else
-			fields[key] = value
-		end
-	end
-
-	if not fields.wield_image then fields.wield_image = fields.inventory_image end
-
-	-- Entity fields override
-	for key, value in pairs(model.entity_fields) do
-		fields.display_entities["signs:display_text"][key] = value
-	end
-
-	minetest.register_node(mod..":"..name, fields)
-end
diff --git a/signs/compatibility.lua b/signs/compatibility.lua
index 3284230..e798a67 100644
--- a/signs/compatibility.lua
+++ b/signs/compatibility.lua
@@ -43,9 +43,9 @@ local function compatibility_check_1(pos, node)
     node.name = convert_nodes[node.name]
     if node.name then
 	  node.param2 = wallmounted_to_facedir[node.param2]
-      display_lib.on_destruct(pos)
+      display_api.on_destruct(pos)
       minetest.swap_node(pos, node)
-      display_lib.on_construct(pos)
+      display_api.on_construct(pos)
     end
 end
 
@@ -76,7 +76,7 @@ local function compatibility_check_2(pos, node)
 		end
 	end
 	-- Create new entity
-	display_lib.update_entities(pos)
+	display_api.update_entities(pos)
 end
 
 minetest.register_lbm({ name = "signs:conpatibility_2",
diff --git a/signs/depends.txt b/signs/depends.txt
index 3feca07..ad3bb8f 100644
--- a/signs/depends.txt
+++ b/signs/depends.txt
@@ -1,4 +1,5 @@
 default
 intllib?
-display_lib
-font_lib
+display_api
+font_api
+signs_api
diff --git a/signs/nodes.lua b/signs/nodes.lua
index 354bfd6..18bf1d6 100644
--- a/signs/nodes.lua
+++ b/signs/nodes.lua
@@ -28,7 +28,7 @@ local function display_poster(pos, node, player)
 	local def = minetest.registered_nodes[node.name].display_entities["signs:display_text"]
 
 	-- Title texture
-	local titletexture = font_lib.make_multiline_texture(
+	local titletexture = font_api.make_multiline_texture(
 	  def.font_name, meta:get_string("display_text"),
 	  116, 12, def.maxlines, def.valign, def.color)
 
@@ -61,9 +61,9 @@ local function edit_poster(pos, node, player)
 			"size[6.5,7.5]"..
 			default.gui_bg .. default.gui_bg_img .. default.gui_slots ..
 			"field[0.5,0.7;6,1;display_text;"..F("Title")..";"..
-            minetest.formspec_escape(meta:get_string("display_text")).."]"..
+			minetest.formspec_escape(meta:get_string("display_text")).."]"..
 			"textarea[0.5,1.7;6,6;text;"..F("Text")..";"..
-            minetest.formspec_escape(meta:get_string("text")).."]"..
+			minetest.formspec_escape(meta:get_string("text")).."]"..
 			"button_exit[2.25,7;2,1;write;"..F("Write").."]"
 		minetest.show_formspec(player:get_player_name(),
 			node.name.."@"..minetest.pos_to_string(pos)..":edit",
@@ -87,14 +87,14 @@ local function on_receive_fields_poster(pos, formname, fields, player)
 			meta:set_string("text", fields.text)
 			meta:set_string("infotext", "\""..fields.display_text
 					.."\"\n"..S("(right-click to read more text)"))
-			display_lib.update_entities(pos)
+			display_api.update_entities(pos)
 			display_poster(pos, node, player)
 		end
 	end
 end
 
 -- Text entity for all signs
-display_lib.register_display_entity("signs:display_text")
+display_api.register_display_entity("signs:display_text")
 
 -- Sign models and registration
 local models = {
@@ -103,7 +103,7 @@ local models = {
 		width = 14/16,
 		height = 7/16,
 		entity_fields = {
-            right = -3/32,
+			right = -3/32,
 			size = { x = 12/16, y = 6/16 },
 			resolution = { x = 9, y = 5 },
 			maxlines = 2,
@@ -113,8 +113,8 @@ local models = {
 			description = S("Wooden direction sign"),
 			tiles = { "signs_wooden_direction.png" },
 			inventory_image = "signs_wooden_inventory.png",
-            signs_other_dir = 'signs:wooden_left_sign',
-			on_place = signs.on_place_direction,
+			signs_other_dir = 'signs:wooden_left_sign',
+			on_place = signs_api.on_place_direction,
 			drawtype = "mesh",
 			mesh = "signs_dir_right.obj",
 			selection_box = { type="fixed", fixed = {-0.5, -7/32, 0.5, 7/16, 7/32, 7/16}},
@@ -126,7 +126,7 @@ local models = {
 		width = 14/16,
 		height = 7/16,
 		entity_fields = {
-            right = 3/32,
+			right = 3/32,
 			size = { x = 12/16, y = 6/16 },
 			resolution = { x = 9, y = 5 },
 			maxlines = 2,
@@ -136,7 +136,7 @@ local models = {
 			description = S("Wooden direction sign"),
 			tiles = { "signs_wooden_direction.png" },
 			inventory_image = "signs_wooden_inventory.png",
-            signs_other_dir = 'signs:wooden_right_sign',
+			signs_other_dir = 'signs:wooden_right_sign',
 			drawtype = "mesh",
 			mesh = "signs_dir_left.obj",
 			selection_box = { type="fixed", fixed = {-7/16, -7/32, 0.5, 0.5, 7/32, 7/16}},
@@ -158,10 +158,10 @@ local models = {
 		node_fields = {
 			description = S("Poster"),
 			tiles = { "signs_poster_sides.png", "signs_poster_sides.png",
-                      "signs_poster_sides.png", "signs_poster_sides.png", 
-                      "signs_poster_sides.png", "signs_poster.png" },
+			          "signs_poster_sides.png", "signs_poster_sides.png",
+			          "signs_poster_sides.png", "signs_poster.png" },
 			inventory_image = "signs_poster_inventory.png",
-			on_construct = display_lib.on_construct,
+			on_construct = display_api.on_construct,
 			on_rightclick = display_poster,
 			on_receive_fields = on_receive_fields_poster,
 		},
@@ -171,6 +171,6 @@ local models = {
 -- Node registration
 for name, model in pairs(models)
 do
-	signs.register_sign("signs", name, model)
+	signs_api.register_sign("signs", name, model)
 end
 
diff --git a/signs_api/LICENSE.txt b/signs_api/LICENSE.txt
new file mode 100644
index 0000000..341c30b
--- /dev/null
+++ b/signs_api/LICENSE.txt
@@ -0,0 +1,166 @@
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+  A "Combined Work" is a work produced by combining or linking an
+Application with the Library.  The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+  The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+  The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+  1. Exception to Section 3 of the GNU GPL.
+
+  You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+  2. Conveying Modified Versions.
+
+  If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+   a) under this License, provided that you make a good faith effort to
+   ensure that, in the event an Application does not supply the
+   function or data, the facility still operates, and performs
+   whatever part of its purpose remains meaningful, or
+
+   b) under the GNU GPL, with none of the additional permissions of
+   this License applicable to that copy.
+
+  3. Object Code Incorporating Material from Library Header Files.
+
+  The object code form of an Application may incorporate material from
+a header file that is part of the Library.  You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+   a) Give prominent notice with each copy of the object code that the
+   Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the object code with a copy of the GNU GPL and this license
+   document.
+
+  4. Combined Works.
+
+  You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
+portions of the Library contained in the Combined Work and reverse
+engineering for debugging such modifications, if you also do each of
+the following:
+
+   a) Give prominent notice with each copy of the Combined Work that
+   the Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the Combined Work with a copy of the GNU GPL and this license
+   document.
+
+   c) For a Combined Work that displays copyright notices during
+   execution, include the copyright notice for the Library among
+   these notices, as well as a reference directing the user to the
+   copies of the GNU GPL and this license document.
+
+   d) Do one of the following:
+
+       0) Convey the Minimal Corresponding Source under the terms of this
+       License, and the Corresponding Application Code in a form
+       suitable for, and under terms that permit, the user to
+       recombine or relink the Application with a modified version of
+       the Linked Version to produce a modified Combined Work, in the
+       manner specified by section 6 of the GNU GPL for conveying
+       Corresponding Source.
+
+       1) Use a suitable shared library mechanism for linking with the
+       Library.  A suitable mechanism is one that (a) uses at run time
+       a copy of the Library already present on the user's computer
+       system, and (b) will operate properly with a modified version
+       of the Library that is interface-compatible with the Linked
+       Version.
+
+   e) Provide Installation Information, but only if you would otherwise
+   be required to provide such information under section 6 of the
+   GNU GPL, and only to the extent that such information is
+   necessary to install and execute a modified version of the
+   Combined Work produced by recombining or relinking the
+   Application with a modified version of the Linked Version. (If
+   you use option 4d0, the Installation Information must accompany
+   the Minimal Corresponding Source and Corresponding Application
+   Code. If you use option 4d1, you must provide the Installation
+   Information in the manner specified by section 6 of the GNU GPL
+   for conveying Corresponding Source.)
+
+  5. Combined Libraries.
+
+  You may place library facilities that are a work based on the
+Library side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+   a) Accompany the combined library with a copy of the same work based
+   on the Library, uncombined with any other library facilities,
+   conveyed under the terms of this License.
+
+   b) Give prominent notice with the combined library that part of it
+   is a work based on the Library, and explaining where to find the
+   accompanying uncombined form of the same work.
+
+  6. Revised Versions of the GNU Lesser General Public License.
+
+  The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+  Each version is given a distinguishing version number. If the
+Library as you received it specifies that a certain numbered version
+of the GNU Lesser General Public License "or any later version"
+applies to it, you have the option of following the terms and
+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
+General Public License ever published by the Free Software Foundation.
+
+  If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the
+Library.
+
diff --git a/signs_api/README.md b/signs_api/README.md
new file mode 100644
index 0000000..99ff20a
--- /dev/null
+++ b/signs_api/README.md
@@ -0,0 +1,29 @@
+# Signs API
+
+This mod provides various helper functions for registereing signs with text display. Text is locked if area is protected.
+No actual signs get registered by this mod, the signs are defined in the sign submod.
+
+For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?t=19365) at the Minetest forums.
+
+**Dependancies**: default, display\_lib, font\_lib
+
+**License**: Code under LGPL, Textures and models under CC-BY-SA
+
+## API Functions
+### `signs_api.set_display_text(pos, text)`
+Sets the text of a sign. Usually called in `on_receive_fields`.
+
+### `signs_api.set_formspec(pos)`
+Usually called in `on_construct` to set the formspec.
+
+### `signs_api.on_receive_fields(pos, formname, fields, player)`
+Helper function for `on_receive_fields`. Sets the display text and checks for protection.
+
+### `signs_api.on_place_direction(itemstack, placer, pointed_thing)`
+On place callback for direction signs (chooses which sign according to look direction).
+
+### `signs_api.on_rotate(pos, node, player, mode, new_param2)`
+Handles screwdriver rotation. Direction is affected for direction signs.
+
+### `signs_api.register_sign(mod, name, model)`
+A method to quickly register signs.
diff --git a/signs_api/common.lua b/signs_api/common.lua
new file mode 100644
index 0000000..2528ff5
--- /dev/null
+++ b/signs_api/common.lua
@@ -0,0 +1,188 @@
+--[[
+    signs mod for Minetest - Various signs with text displayed on
+    (c) Pierre-Yves Rollo
+
+    This file is part of signs.
+
+    signs is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    signs is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with signs.  If not, see <http://www.gnu.org/licenses/>.
+--]]
+
+local S = signs_api.intllib
+local F = function(...) return minetest.formspec_escape(S(...)) end
+
+function signs_api.set_display_text(pos,text)
+	local meta = minetest.get_meta(pos)
+	meta:set_string("display_text", text)
+	meta:set_string("infotext", "\""..text.."\"")
+	display_api.update_entities(pos)
+end
+
+function signs_api.set_formspec(pos)
+	local meta = minetest.get_meta(pos)
+	local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
+	if ndef and ndef.display_entities and ndef.display_entities["signs:display_text"] then
+		local maxlines = ndef.display_entities["signs:display_text"].maxlines
+		local formspec
+
+		if maxlines == 1 then
+			formspec = "size[6,3]"..
+				default.gui_bg .. default.gui_bg_img .. default.gui_slots ..
+				"field[0.5,0.7;5.5,1;display_text;"..F("Text")..";${display_text}]"..
+				"button_exit[2,2;2,1;ok;"..F("Write").."]"
+		else
+			local extralabel = ""
+			if maxlines then
+				extralabel = F(" (first %s lines only)"):format(maxlines)
+			end
+
+			formspec = "size[6,4]"..
+				default.gui_bg .. default.gui_bg_img .. default.gui_slots ..
+				"textarea[0.5,0.7;5.5,2;display_text;"..F("Text")..""..extralabel..";${display_text}]"..
+				"button_exit[2,3;2,1;ok;"..F("Write").."]"
+		end
+
+		meta:set_string("formspec", formspec)
+	end
+end
+
+function signs_api.on_receive_fields(pos, formname, fields, player)
+	if not minetest.is_protected(pos, player:get_player_name()) then
+		if fields and (fields.ok or fields.key_enter) then
+			signs_api.set_display_text(pos, fields.display_text)
+		end
+	end
+end
+
+-- On place callback for direction signs
+-- (chooses which sign according to look direction)
+function signs_api.on_place_direction(itemstack, placer, pointed_thing)
+	local name = itemstack:get_name()
+	local ndef = minetest.registered_nodes[name]
+
+    local bdir = {x = pointed_thing.under.x - pointed_thing.above.x,
+                  y = pointed_thing.under.y - pointed_thing.above.y,
+                  z = pointed_thing.under.z - pointed_thing.above.z}
+	local pdir = placer:get_look_dir()
+
+	local ndir, test
+
+	if ndef.paramtype2 == "facedir" then
+		if bdir.x == 0 and bdir.z == 0 then
+			-- Ceiling or floor pointed (facedir chosen from player dir)
+			ndir = minetest.dir_to_facedir({x=pdir.x, y=0, z=pdir.z})
+		else
+			-- Wall pointed
+			ndir = minetest.dir_to_facedir(bdir)
+		end
+
+		test = {[0]=-pdir.x, pdir.z, pdir.x, -pdir.z}
+    end
+
+	if ndef.paramtype2 == "wallmounted" then
+		ndir = minetest.dir_to_wallmounted(bdir)
+		if ndir == 0 or ndir == 1 then
+			-- Ceiling or floor
+			ndir = minetest.dir_to_wallmounted({x=pdir.x, y=0, z=pdir.z})
+		end
+
+		test = {0, pdir.z, -pdir.z, -pdir.x, pdir.x}
+	end
+
+	-- Only for direction signs
+	if ndef.signs_other_dir then
+		if test[ndir] > 0 then
+			itemstack:set_name(ndef.signs_other_dir)
+		end
+		itemstack = minetest.item_place(itemstack, placer, pointed_thing, ndir)
+		itemstack:set_name(name)
+
+		return itemstack
+	else
+		return minetest.item_place(itemstack, placer, pointed_thing, ndir)
+	end
+end
+
+-- Handles screwdriver rotation. Direction is affected for direction signs
+function signs_api.on_rotate(pos, node, player, mode, new_param2)
+	if mode == 2 then
+		local ndef = minetest.registered_nodes[node.name]
+	    if ndef.signs_other_dir then
+		    minetest.swap_node(pos, {name = ndef.signs_other_dir,
+                param1 = node.param1, param2 = node.param2})
+			display_api.update_entities(pos)
+	    end
+	else
+        display_api.on_rotate(pos, node, user, mode, new_param2)
+	end
+    return false;
+end
+
+function signs_api.register_sign(mod, name, model)
+	-- Default fields
+	local fields = {
+		sunlight_propagates = true,
+		paramtype = "light",
+		paramtype2 = "facedir",
+		drawtype = "nodebox",
+		node_box = {
+			type = "fixed",
+			fixed = {-model.width/2, -model.height/2, 0.5,
+					 model.width/2, model.height/2, 0.5 - model.depth},
+		},
+		groups = {choppy=2, dig_immediate=2, not_blocking_trains = 1, display_modpack_node = 1},
+		sounds = default.node_sound_defaults(),
+		display_entities = {
+			["signs:display_text"] = {
+					on_display_update = font_api.on_display_update,
+					depth = 0.5 - display_api.entity_spacing - model.depth,
+					size = { x = model.width, y = model.height },
+					resolution = { x = 64, y = 64 },
+					maxlines = 1,
+			},
+
+		},
+		on_place = display_api.on_place,
+		on_construct = 	function(pos)
+							signs_api.set_formspec(pos)
+							display_api.on_construct(pos)
+						end,
+		on_destruct = display_api.on_destruct,
+		on_rotate = signs_api.on_rotate,
+		on_receive_fields =  signs_api.on_receive_fields,
+		on_punch = function(pos, node, player, pointed_thing) display_api.update_entities(pos) end,
+	}
+
+	-- Node fields override
+	for key, value in pairs(model.node_fields) do
+		if key == "groups" then
+			for key2, value2 in pairs(value) do
+				fields[key][key2] = value2
+			end
+		else
+			fields[key] = value
+		end
+	end
+
+	if not fields.wield_image then fields.wield_image = fields.inventory_image end
+
+	-- Entity fields override
+	for key, value in pairs(model.entity_fields) do
+		fields.display_entities["signs:display_text"][key] = value
+	end
+
+	minetest.register_node(mod..":"..name, fields)
+end
+
+-- Text entity for all signs
+display_api.register_display_entity("signs:display_text")
diff --git a/signs_api/copyright.txt b/signs_api/copyright.txt
new file mode 100644
index 0000000..b70e051
--- /dev/null
+++ b/signs_api/copyright.txt
@@ -0,0 +1,10 @@
+Code by Pierre-Yves Rollo (pyrollo)
+intllib support (i18n) by (fat115)
+intllib fallback code and tools by Diego Martínez (kaeza)
+Extra contributors:
+(gpcf)
+(Thomas--S)
+Translations:
+Muhammad Nur Hidayat Yasuyoshi (MuhdNurHidayat)
+(fat115)
+
diff --git a/signs_api/depends.txt b/signs_api/depends.txt
new file mode 100644
index 0000000..f75ffcc
--- /dev/null
+++ b/signs_api/depends.txt
@@ -0,0 +1,4 @@
+default
+intllib?
+display_api
+font_api
diff --git a/signs_api/init.lua b/signs_api/init.lua
new file mode 100644
index 0000000..c13a253
--- /dev/null
+++ b/signs_api/init.lua
@@ -0,0 +1,33 @@
+--[[
+    signs mod for Minetest - Various signs with text displayed on
+    (c) Pierre-Yves Rollo
+
+    This file is part of signs.
+
+    signs is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    signs is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with signs.  If not, see <http://www.gnu.org/licenses/>.
+--]]
+
+signs_api = {}
+signs_api.name = minetest.get_current_modname()
+signs_api.path = minetest.get_modpath(signs_api.name)
+
+-- Load support for intllib.
+local S, NS = dofile(signs_api.path.."/intllib.lua")
+signs_api.intllib = S
+
+dofile(signs_api.path.."/common.lua")
+
+
+
+
diff --git a/signs_api/intllib.lua b/signs_api/intllib.lua
new file mode 100644
index 0000000..6669d72
--- /dev/null
+++ b/signs_api/intllib.lua
@@ -0,0 +1,45 @@
+
+-- Fallback functions for when `intllib` is not installed.
+-- Code released under Unlicense <http://unlicense.org>.
+
+-- Get the latest version of this file at:
+--   https://raw.githubusercontent.com/minetest-mods/intllib/master/lib/intllib.lua
+
+local function format(str, ...)
+	local args = { ... }
+	local function repl(escape, open, num, close)
+		if escape == "" then
+			local replacement = tostring(args[tonumber(num)])
+			if open == "" then
+				replacement = replacement..close
+			end
+			return replacement
+		else
+			return "@"..open..num..close
+		end
+	end
+	return (str:gsub("(@?)@(%(?)(%d+)(%)?)", repl))
+end
+
+local gettext, ngettext
+if minetest.get_modpath("intllib") then
+	if intllib.make_gettext_pair then
+		-- New method using gettext.
+		gettext, ngettext = intllib.make_gettext_pair()
+	else
+		-- Old method using text files.
+		gettext = intllib.Getter()
+	end
+end
+
+-- Fill in missing functions.
+
+gettext = gettext or function(msgid, ...)
+	return format(msgid, ...)
+end
+
+ngettext = ngettext or function(msgid, msgid_plural, n, ...)
+	return format(n==1 and msgid or msgid_plural, ...)
+end
+
+return gettext, ngettext
diff --git a/signs_api/locale/fr.po b/signs_api/locale/fr.po
new file mode 100644
index 0000000..e490d1b
--- /dev/null
+++ b/signs_api/locale/fr.po
@@ -0,0 +1,49 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: \n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2018-02-01 05:56+0100\n"
+"PO-Revision-Date: 2017-05-08 07:08+0200\n"
+"Last-Translator: Peppy <peppy@twang-factory.com>\n"
+"Language-Team: \n"
+"Language: fr\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Generator: Poedit 1.8.12\n"
+
+#: common.lua
+msgid "Text"
+msgstr "Texte"
+
+#: common.lua
+msgid "Write"
+msgstr "Écrire"
+
+#: common.lua
+#, lua-format
+msgid " (first %s lines only)"
+msgstr " (uniquement les %s premières lignes)"
+
+#~ msgid "Title"
+#~ msgstr "Titre"
+
+#~ msgid "Close"
+#~ msgstr "Fermer"
+
+#~ msgid "(right-click to read more text)"
+#~ msgstr "(Clic-droit pour afficher le texte entier)"
+
+#~ msgid "Wooden direction sign"
+#~ msgstr "Panneau de direction en bois"
+
+#~ msgid "Poster"
+#~ msgstr "Affiche"
+
+#~ msgid "Textd"
+#~ msgstr "Texte"
diff --git a/signs_api/locale/ms.po b/signs_api/locale/ms.po
new file mode 100644
index 0000000..9c8aab8
--- /dev/null
+++ b/signs_api/locale/ms.po
@@ -0,0 +1,46 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# Muhammad Nur Hidayat <muhdnurhidayat96@yahoo.com>, 2017.
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2018-02-01 05:56+0100\n"
+"PO-Revision-Date: 2017-08-27 15:50+0800\n"
+"Last-Translator: Muhammad Nur Hidayat <muhdnurhidayat96@yahoo.com>\n"
+"Language-Team: Malay <muhdnurhidayat96@yahoo.com>\n"
+"Language: ms\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+"X-Generator: Vé 0.1.4\n"
+
+#: common.lua
+msgid "Text"
+msgstr "Teks"
+
+#: common.lua
+msgid "Write"
+msgstr "Tulis"
+
+#: common.lua
+#, lua-format
+msgid " (first %s lines only)"
+msgstr "( %s baris pertama sahaja )"
+
+#~ msgid "Title"
+#~ msgstr "Tajuk"
+
+#~ msgid "Close"
+#~ msgstr "Tutup"
+
+#~ msgid "(right-click to read more text)"
+#~ msgstr "(klik-kanan untuk baca teks penuh)"
+
+#~ msgid "Wooden direction sign"
+#~ msgstr "Papan tanda arah kayu"
+
+#~ msgid "Poster"
+#~ msgstr "Poster"
diff --git a/signs_api/locale/template.pot b/signs_api/locale/template.pot
new file mode 100644
index 0000000..6004024
--- /dev/null
+++ b/signs_api/locale/template.pot
@@ -0,0 +1,31 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2018-02-01 05:56+0100\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=CHARSET\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: common.lua
+msgid "Text"
+msgstr ""
+
+#: common.lua
+msgid "Write"
+msgstr ""
+
+#: common.lua
+#, lua-format
+msgid " (first %s lines only)"
+msgstr ""
diff --git a/signs_api/tools/updatepo.sh b/signs_api/tools/updatepo.sh
new file mode 100755
index 0000000..feb2504
--- /dev/null
+++ b/signs_api/tools/updatepo.sh
@@ -0,0 +1,25 @@
+#! /bin/bash
+
+# To create a new translation:
+#   msginit --locale=ll_CC -o locale/ll_CC.po -i locale/template.pot
+
+cd "$(dirname "${BASH_SOURCE[0]}")/..";
+
+# Extract translatable strings.
+xgettext --from-code=UTF-8 \
+		--language=Lua \
+		--sort-by-file \
+		--keyword=S \
+		--keyword=NS:1,2 \
+		--keyword=N_ \
+		--keyword=F \
+		--add-comments='Translators:' \
+		--add-location=file \
+		-o locale/template.pot \
+		$(find . -name '*.lua')
+
+# Update translations.
+find locale -name '*.po' | while read -r file; do
+	echo $file
+	msgmerge --update $file locale/template.pot;
+done
diff --git a/signs_road/compatibility.lua b/signs_road/compatibility.lua
index fa5f94b..9e6b29b 100644
--- a/signs_road/compatibility.lua
+++ b/signs_road/compatibility.lua
@@ -45,9 +45,9 @@ local function compatibility_check(pos, node)
     node.name = convert_nodes[node.name]
     if node.name then
 	  node.param2 = wallmounted_to_facedir[node.param2]
-      display_lib.on_destruct(pos)
+      display_api.on_destruct(pos)
       minetest.swap_node(pos, node)
-      display_lib.on_construct(pos)
+      display_api.on_construct(pos)
     end
 end
 
@@ -69,7 +69,7 @@ local function compatibility_check_2(pos, node)
 		end
 	end
 	-- Create new entity
-	display_lib.update_entities(pos)
+	display_api.update_entities(pos)
 end
 
 minetest.register_lbm({ name = "signs_road:conpatibility_2",
diff --git a/signs_road/depends.txt b/signs_road/depends.txt
index 730e727..eeb3b01 100644
--- a/signs_road/depends.txt
+++ b/signs_road/depends.txt
@@ -1,6 +1,6 @@
 default
 intllib?
 dye
-display_lib
-font_lib
-signs
+display_api
+font_api
+signs_api
diff --git a/signs_road/nodes.lua b/signs_road/nodes.lua
index b167db8..c4c0b04 100644
--- a/signs_road/nodes.lua
+++ b/signs_road/nodes.lua
@@ -131,7 +131,7 @@ local models = {
 		width = 1,
 		height = 0.5,
 		entity_fields = {
-            resolution = { x = 7, y = 5 },
+			resolution = { x = 7, y = 5 },
 			maxlines = 1,
 			color = "#000",
 		},
@@ -142,8 +142,8 @@ local models = {
 			          "signs_road_sides.png", "signs_road_black_dir_right.png" },
 			inventory_image = "signs_road_black_dir_inventory.png",
 			signs_other_dir = "signs_road:black_left_sign",
-			on_place = signs.on_place_direction,
-			on_rightclick = signs.on_right_click_direction,
+			on_place = signs_api.on_place_direction,
+			on_rightclick = signs_api.on_right_click_direction,
 		},
 	},
 	black_left_sign = {
@@ -164,8 +164,8 @@ local models = {
 			signs_other_dir = "signs_road:black_right_sign",
 			groups = { not_in_creative_inventory = 1 },
 			drop = "signs_road:black_right_sign",
-			on_place = signs.on_place_direction,
-			on_rightclick = signs.on_right_click_direction,
+			on_place = signs_api.on_place_direction,
+			on_rightclick = signs_api.on_right_click_direction,
 		},
 	},
 
@@ -174,7 +174,7 @@ local models = {
 		width = 14/16,
 		height = 7/16,
 		entity_fields = {
-            right = -3/32,
+			right = -3/32,
 			size = { x = 12/16, y = 6/16 },
 			resolution =  { x = 9, y = 5.5 },
 			maxlines = 2,
@@ -185,8 +185,8 @@ local models = {
 			tiles = { "signs_road_green_direction.png" },
 			inventory_image = "signs_road_green_dir_inventory.png",
 			signs_other_dir = "signs_road:green_left_sign",
-			on_place = signs.on_place_direction,
-            on_rightclick = signs.on_right_click_direction,
+			on_place = signs_api.on_place_direction,
+			on_rightclick = signs_api.on_right_click_direction,
 			drawtype = "mesh",
 			mesh = "signs_dir_right.obj",
 			selection_box = { type = "fixed", fixed = { -0.5, -7/32, 0.5, 7/16, 7/32, 7/16 } },
@@ -198,7 +198,7 @@ local models = {
 		width = 14/16,
 		height = 7/16,
 		entity_fields = {
-            right = 3/32,
+			right = 3/32,
 			size = { x = 12/16, y = 6/16 },
 			resolution = { x = 9, y = 5.5 },
 			maxlines = 2,
@@ -209,8 +209,8 @@ local models = {
 			tiles = { "signs_road_green_direction.png" },
 			inventory_image = "signs_road_green_dir_inventory.png",
 			signs_other_dir = "signs_road:green_right_sign",
-			on_place = signs.on_place_direction,
-            on_rightclick = signs.on_right_click_direction,
+			on_place = signs_api.on_place_direction,
+			on_rightclick = signs_api.on_right_click_direction,
 			drawtype = "mesh",
 			mesh = "signs_dir_left.obj",
 			selection_box = { type = "fixed", fixed = { -7/16, -7/32, 0.5, 0.5, 7/32, 7/16 } },
@@ -224,7 +224,7 @@ local models = {
 		width = 14/16,
 		height = 7/16,
 		entity_fields = {
-            right = -3/32,
+			right = -3/32,
 			size = { x = 12/16, y = 6/16 },
 			resolution = { x = 9, y = 5.5 },
 			maxlines = 2,
@@ -235,8 +235,8 @@ local models = {
 			tiles = { "signs_road_yellow_direction.png" },
 			inventory_image = "signs_road_yellow_dir_inventory.png",
 			signs_other_dir = "signs_road:yellow_left_sign",
-			on_place = signs.on_place_direction,
-            on_rightclick = signs.on_right_click_direction,
+			on_place = signs_api.on_place_direction,
+			on_rightclick = signs_api.on_right_click_direction,
 			drawtype = "mesh",
 			mesh = "signs_dir_right.obj",
 			selection_box = { type = "fixed", fixed = { -0.5, -7/32, 0.5, 7/16, 7/32, 7/16 } },
@@ -248,7 +248,7 @@ local models = {
 		width = 14/16,
 		height = 7/16,
 		entity_fields = {
-            right = 3/32,
+			right = 3/32,
 			size = { x = 12/16, y = 6/16 },
 			resolution = { x = 9, y = 5.5 },
 			maxlines = 2,
@@ -259,8 +259,8 @@ local models = {
 			tiles = { "signs_road_yellow_direction.png" },
 			inventory_image = "signs_road_yellow_dir_inventory.png",
 			signs_other_dir = "signs_road:yellow_right_sign",
-			on_place = signs.on_place_direction,
-            on_rightclick = signs.on_right_click_direction,
+			on_place = signs_api.on_place_direction,
+			on_rightclick = signs_api.on_right_click_direction,
 			drawtype = "mesh",
 			mesh = "signs_dir_left.obj",
 			selection_box = { type = "fixed", fixed = { -7/16, -7/32, 0.5, 0.5, 7/32, 7/16 } },
@@ -274,7 +274,7 @@ local models = {
 		width = 14/16,
 		height = 7/16,
 		entity_fields = {
-            right = -3/32,
+			right = -3/32,
 			size = { x = 12/16, y = 6/16 },
 			resolution = { x = 9, y = 5.5 },
 			maxlines = 2,
@@ -285,8 +285,8 @@ local models = {
 			tiles = { "signs_road_white_direction.png" },
 			inventory_image = "signs_road_white_dir_inventory.png",
 			signs_other_dir = "signs_road:white_left_sign",
-			on_place = signs.on_place_direction,
-            on_rightclick = signs.on_right_click_direction,
+			on_place = signs_api.on_place_direction,
+			on_rightclick = signs_api.on_right_click_direction,
 			drawtype = "mesh",
 			mesh = "signs_dir_right.obj",
 			selection_box = { type = "fixed", fixed = { -0.5, -7/32, 0.5, 7/16, 7/32, 7/16 } },
@@ -298,7 +298,7 @@ local models = {
 		width = 14/16,
 		height = 7/16,
 		entity_fields = {
-            right = 3/32,
+			right = 3/32,
 			size = { x = 12/16, y = 6/16 },
 			resolution = { x = 9, y = 5.5 },
 			maxlines = 2,
@@ -309,8 +309,8 @@ local models = {
 			tiles = { "signs_road_white_direction.png" },
 			inventory_image = "signs_road_white_dir_inventory.png",
 			signs_other_dir = "signs_road:white_right_sign",
-			on_place=signs.on_place_direction,
-            on_rightclick = signs.on_right_click_direction,
+			on_place=signs_api.on_place_direction,
+			on_rightclick = signs_api.on_right_click_direction,
 			drawtype = "mesh",
 			mesh = "signs_dir_left.obj",
 			selection_box = { type = "fixed", fixed = { -7/16, -7/32, 0.5, 0.5, 7/32, 7/16 } },
@@ -324,7 +324,7 @@ local models = {
 -- Node registration
 for name, model in pairs(models)
 do
-	signs.register_sign("signs_road", name, model)
+	signs_api.register_sign("signs_road", name, model)
 end
 
 
diff --git a/steles/depends.txt b/steles/depends.txt
index 35625c0..ba43223 100644
--- a/steles/depends.txt
+++ b/steles/depends.txt
@@ -1,5 +1,5 @@
 default
 intllib?
-display_lib
-font_lib
+display_api
+font_api
 technic?
diff --git a/steles/nodes.lua b/steles/nodes.lua
index d2fb504..eabb096 100644
--- a/steles/nodes.lua
+++ b/steles/nodes.lua
@@ -21,7 +21,7 @@
 local S = steles.intllib
 local F = function(...) return minetest.formspec_escape(S(...)) end
 
-display_lib.register_display_entity("steles:text")
+display_api.register_display_entity("steles:text")
 
 for i, material in ipairs(steles.materials) do
 
@@ -30,7 +30,7 @@ for i, material in ipairs(steles.materials) do
 	if ndef then
 		local groups = table.copy(ndef.groups)
 		local parts = material:split(":")
-		groups.display_lib_node = 1
+		groups.display_modpack_node = 1
 
 		minetest.register_node("steles:"..parts[2].."_stele", {
 			description = steles.materials_desc[i],
@@ -49,8 +49,8 @@ for i, material in ipairs(steles.materials) do
 			groups = groups,
 			display_entities = {
 				["steles:text"] = {
-						on_display_update = font_lib.on_display_update,
-						depth = -2/16 - display_lib.entity_spacing, height = 2/16,
+						on_display_update = font_api.on_display_update,
+						depth = -2/16 - display_api.entity_spacing, height = 2/16,
 						size = { x = 14/16, y = 12/16 },
 						resolution = { x = 11, y = 5 },
 						maxlines = 3,
@@ -58,7 +58,7 @@ for i, material in ipairs(steles.materials) do
 			},
 			on_place = function(itemstack, placer, pointed_thing)
 					minetest.rotate_node(itemstack, placer, pointed_thing)
-					display_lib.on_place(itemstack, placer, pointed_thing)
+					display_api.on_place(itemstack, placer, pointed_thing)
 				end,
 			on_construct = 	function(pos)
 					local meta = minetest.get_meta(pos)
@@ -68,21 +68,21 @@ for i, material in ipairs(steles.materials) do
 						..F("Displayed text (3 lines max)")
 						..";${display_text}]"
 						.."button_exit[2,3;2,1;ok;"..F("Write").."]")
-					display_lib.on_construct(pos)
+					display_api.on_construct(pos)
 				end,
-			on_destruct = display_lib.on_destruct,
-			on_rotate = display_lib.on_rotate,
+			on_destruct = display_api.on_destruct,
+			on_rotate = display_api.on_rotate,
 			on_receive_fields = function(pos, formname, fields, player)
 					if not minetest.is_protected(pos, player:get_player_name()) then
 						local meta = minetest.get_meta(pos)
 						if fields and fields.ok then
 							meta:set_string("display_text", fields.display_text)
 							meta:set_string("infotext", "\""..fields.display_text.."\"")
-							display_lib.update_entities(pos)
+							display_api.update_entities(pos)
 						end
 					end
 				end,
-			on_punch = display_lib.update_entities,
+			on_punch = display_api.update_entities,
 		})
 	end
 end
-- 
cgit v1.2.3