Fixed API documentation (height replaced by top)

Autodetect rotation restrictions if on MT<5.0

README.md

@@ -1,100 +1,115 @@
-# Display Modpack 
-Version 1.1.1
+# Display Modpack
+Version 1.3.1
 
 This modpack provides mods with dynamic display. Mods are :
 
-- **display_api**: A library for adding display entities to nodes;
-- **font_api**: A library for displaying fonts on entities;
-- **signs_api**: A library for the easy creation of signs;
+- **[display_api](https://github.com/pyrollo/display_modpack/tree/master/display_api)**: A library for adding display entities to nodes;
+- **[font_api](https://github.com/pyrollo/display_modpack/tree/master/font_api)**: A library for displaying fonts on entities;
+- **[signs_api](https://github.com/pyrollo/display_modpack/tree/master/signs_api)**: A library for the easy creation of signs;
+- **[font_metro](https://github.com/pyrollo/display_modpack/tree/master/font_metro)**: A font mod used as default font (includes uppercase, lowercase and accentuated latin letters, usual signs, cyrillic and greek letters)
 
-- **boards**: A mod providing school boards;
-- **ontime_clocks**: A mod providing clocks which display the ingame time;
-- **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;
+- **[boards](https://github.com/pyrollo/display_modpack/tree/master/boards)**: A mod providing school boards (includes *tiny cursive font*, a handwriting style font);
+- **[ontime_clocks](https://github.com/pyrollo/display_modpack/tree/master/ontime_clocks)**: A mod providing clocks which display the ingame time;
+- **[signs](https://github.com/pyrollo/display_modpack/tree/master/signs)**: A mod providing signs and direction signs displaying text;
+- **[signs_road](https://github.com/pyrollo/display_modpack/tree/master/signs_road)**: A mod providing road signs displaying text;
+- **[steles](https://github.com/pyrollo/display_modpack/tree/master/steles)**: A mod providing stone steles with text;
 
 For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?t=19365) at the Minetest forums.
 
 ![Presentation image of Display_Modpack](screenshot.png)
 
+## Extra fonts
+
+*Metro* and *Tiny Cursive* fonts are provided in **Display Modpack** (in **font_metro** and **boards** mods) but you can add more fonts by installing font mods. Be aware that each font mod comes with numerous textures. This can result in slowing media downloading and/or client display.
+
+Extra font mods can be found here:
+ * [OldWizard](https://github.com/pyrollo/font_oldwizard): An old style gothic font.
+ * [Botic](https://github.com/pyrollo/font_botic): A scifi style font.
+
+## Deprecation notice (for modders)
+
+### December 2018
+Following objects are deprecated, shows a warning in log when used:
+* `display_modpack_node` group (use `display_api` group instead);
+* `display_lib_node` group (use `display_api` group instead);
+* `display_lib` global table (use `display_api` global table instead);
+* `font_lib` global table (use `font_api` global table instead);
+
+These objects will be removed in the future.
+
 ## Changelog
+### 2019-03-14 (Version 1.3.1)
+- __dispay_api__: Display API now detects automatically whenr rotation restrictions have to be applied.
+- __sign_api__: Screwdriver behavior changed. Now, left click rotates and changes direction.
+
+### 2019-03-09 (Version 1.3)
+- __display_api__: Display nodes can be rotated in every directions (if running Minetest 5 or above).
+- __display_api__: New setting to restrict rotations to Minetest 0.4 abilities (restriction enabled by default).
+- __sign_api__: Changed behavior of screwdriver if no rotation restriction.
+
+### 2018-12-14 (Version 1.2.3)
+- __display_api__: New `yaw` attributes, entities can now have different angles with node.
+- __font_api__: New `Font:render` method for texture creation
+- __font_api__: Specific management for fixed width font. Allows number of columns based texture width.
+- __font_api__: Improve `display_api` integration into `font_api`. Display API fully optional. `font_api.on_display_update` defined only if `display_api` enabled.
+- __font_api__: Improve management of invalid UTF strings (should not crash anymore)
+- __font_api__: Deprecation of `font_lib`
+- __signs__: Fixed craft recipe for labels
+
+### 2018-12-02 (Version 1.2.2)
+- Fixed a bug that prevented Display API from working on some systems (Raspberry Pi)
+
+### 2018-11-01 (Version 1.2.1)
+- Now font can be chosen per sign / stele
+
+### 2018-11-01 (Version 1.2)
+- Labels and woodend signs added.
+- Fallback mechanism for missing chars (For example: "é" --> "e" --> "E").
+- Several bug fixes by 12Me21 and naturefreshmilk.
 
 ### 2018-07-16 (Version 1.1.1)
-
 - Boards mod added.
-
-- Bug fix in default font chosing when multiple font registered. 
+- Bug fix in default font chosing when multiple font registered.
 
 ### 2018-07-13 (Version 1.1.0)
-
 - Font API rework introducing Font class.
-
 - Replaced default Epilepsy Font by Metro Font for licensing purposes,
-
 - Rework of all nodes displaying text accordingly to the Font API rework.
 
 As font_epilepsy mod has been replaced by font_metro mod, **don't forget to activate font_metro mod after updating** or you won't have any text displayed.
 
 ### 2018-05-30 (Version 1.0.1)
-
 Mostly bug fixes :
-
 - Fix steles orientation when placing
-
 - Update entity on mapblock load
-
 - Use default formspec style
-
 - Fix ndef nill value in steles mod when technics not installed
-
 - Seperate signs API from signs définitions
-
 - Allow a greater offset between display and block
 
 ### 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 
-
+- 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.
-
 - Font\_lib support for multiple fonts (nothing yet visible in mods) ;
-
-- Font\_lib support for Unicode characters (limited to Unicode Plane 0: 0000-FFFF, see [Wikipedia](https://en.wikipedia.org/wiki/Unicode)) ; 
-
+- Font\_lib support for Unicode characters (limited to Unicode Plane 0: 0000-FFFF, see [Wikipedia](https://en.wikipedia.org/wiki/Unicode)) ;
 - New "default" font with original textures from Vanessa Ezekowitz (VanessaE) ;
 
 ### 2017-12-10
-
 - Compatibility of signs mod with signs_lib (thanks to gpcf) ;
-
 - Added large banner in road signs (thanks to gpcf) ;
 
 ### 2017-08-26
-
-- Changed signs from wallmounted to facedir to improve textures and make it possible to use screwdriver. 
+- Changed signs from wallmounted to facedir to improve textures and make it possible to use screwdriver.
 **IMPORTANT** : Map will be updated to change to new nodes but inventory items will turn into "Unknown items" and have to be re-crafted.
-
 - Intllib support added with french translation (whole modpack, thanks to fat115) ;
-
 - Punch on nodes to update entity (signs, signs_road and steles). Usefull in case of /clearobjects ;
-
 - Changed wooden direction sign textures (signs) ;
-
 - Added back and side textures to all signs (road_signs) ;
-
 - Added more sign types : White/yellow/green signs and direction signs (signs_road) ;
-
-
-

boards/mod.conf

@@ -0,0 +1,3 @@
+name=boards
+description=Writable school boards using sign_api
+depends=default,signs_api

display_api/API.md

@@ -1,58 +1,56 @@
-# 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).
+# Display API
+This document describes Display API. Display API allows to add a dynamic display on a node. Display API limits node rotations. For wallmounted, only vertical positionning is available. For facedir, only first four position are availabel (those with default axis).
 
 ## Provided methods
 ### update\_entities
-**display\_lib.update\_entities(pos)**
+**display\_api.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)**
+**display\_api.register\_display\_entity(entity_name)**
 
-This is a helper to register entities used for display. 
+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)**
+**display\_api.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)**
+**display\_api.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)**
+**display\_api.on_destruct(pos)**
 
-`on_destruct` node callback implementation. Display nodes should have this callback (removes display entities on node destruction). 
+`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)**
+**display\_api.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)**
+**display\_api.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). 
+`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.
+  - `on_place`, `on_construct`, `on_destruct` and `on_rotate` callbacks using display_api callbacks.\
+  - `display_api` 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 `height` : Entity position regarding to node facedir/wallmounted main axis.
-Values for these fields can be any number between -1.5 and 1.5 (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).
+`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 `top`: Entity position regarding to node facedir/wallmounted main axis.\
+Values for these fields can be any number between -1.5 and 1.5 (default value is 0). Position 0,0,0 is the center of the node.\
+`depth` goes from front (-0.5) to rear (0.5), `top` goes from bottom (-0.5) to top (0.5) and `right` goes from left (-0.5) to right (0.5).\
+`yaw`: Entity yaw in radians, regarding to main axis. Default is 0, aligned to node face.
 
 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.
 
@@ -61,12 +59,12 @@ In order to avoid flickering text, it's better to have text a little behind node
 	display_api.register_display_entity("mymod:entity1")
 	display_api.register_display_entity("mymod:entity2")
 
-	function my_display_update1(pos, objref) 
+	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) 
+	function my_display_update2(pos, objref)
 		objref:set_properties({ textures= {"mytexture2.png"},
 		                        visual_size = {x=1, y=1} })
 	end
@@ -75,14 +73,14 @@ In order to avoid flickering text, it's better to have text a little behind node
 		...
 		paramtype2 = "facedir",
 		...
-		groups = { display_modpack_node = 1, ... },
+		groups = { display_api = 1, ... },
 		...
 		display_entities = {
-			["mymod:entity1"] = { 
+			["mymod:entity1"] = {
 				depth = 0.3,
 				on_display_update = my_display_update1 },
-			["mymod:entity1"] = { 
-				depth = 0.2, height = 0.1,
+			["mymod:entity1"] = {
+				depth = 0.2, top = 0.1,
 				on_display_update = my_display_update2 },
 			},
 		...

display_api/README.md

@@ -1,14 +1,34 @@
-# Display Lib
+# Display API
 
 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.
+**Limitations**: This lib uses entities to draw display. This means display has to be vertical (and "upside up") on Minetest before version 5.0.
 
 **Dependancies**:default
 
-**License**: LPGL
+**License**: LGPLv2
 
 **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.
 
+## Deprecation notice (for modders)
+
+### December 2018
+Following objects are deprecated, shows a warning in log when used:
+* `display_modpack_node` group (use `display_api` group instead);
+* `display_lib_node` group (use `display_api` group instead);
+* `display_lib` global table (use `display_api` global table instead);
+
+These objects will be removed in the future.
+
+## Change log
+### 2019-03-14
+- __dispay_api__: Display API now detects automatically whenr rotation restrictions have to be applied.
+
+### 2019-03-09
+- __display_api__: Display nodes can be rotated in every directions (if running Minetest 5 or above).
+- __display_api__: New setting to restrict rotations to Minetest 0.4 abilities (restriction enabled by default).
+
+### 2018-12-14
+- __display_api__: New `yaw` attributes, entities can now have different angles with node.

display_api/deprecation.lua

@@ -0,0 +1,78 @@
+--[[
+		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/>.
+--]]
+
+-- Deprecation
+
+function deprecated_group(deprecated_group, replacement_group)
+	for name, ndef in pairs(minetest.registered_nodes) do
+		if ndef.groups and ndef.groups[deprecated_group] then
+			minetest.log("warning", string.format(
+				'Node %s belongs to deprecated "%s" group which should be replaced with new "%s" group.',
+				name, deprecated_group, replacement_group))
+		end
+	end
+end
+
+function deprecated_global_table(deprecated_global_name, replacement_global_name)
+	assert(type(deprecated_global_name) == 'string', "deprecated_global_name should be a string.")
+	assert(type(replacement_global_name) == 'string', "replacement_global_name should be a string.")
+	assert(deprecated_global_name ~= '', "deprecated_global_name should not be empty.")
+	assert(replacement_global_name ~= '', "replacement_global_name should not be empty.")
+	assert(rawget(_G, deprecated_global_name) == nil, "deprecated global does not exist.")
+	if _G[replacement_global_name] == nil then
+		minetest.log('warning', string.format(
+			'Replacement global "%s" does not exists.', replacement_global_name))
+		return
+	end
+	local meta = {
+		deprecated = deprecated_global_name,
+		replacement = replacement_global_name,
+		__index = function(table, key)
+			local meta = getmetatable(table)
+			local dbg = debug.getinfo(2, "lS")
+			minetest.log("warning", string.format(
+				'Accessing deprecated "%s" table, "%s" should be used instead (%s:%d).',
+				meta.deprecated, meta.replacement, (dbg.short_src or 'unknown'),
+				(dbg.currentline or 0)))
+			return _G[meta.replacement][key]
+		end,
+		__newindex = function(table, key, value)
+			local meta = getmetatable(table)
+			local dbg = debug.getinfo(2, "lS")
+			minetest.log("warning", string.format(
+				'Accessing deprecated "%s" table, "%s" should be used instead (%s:%d).',
+				meta.deprecated, meta.replacement, (dbg.short_src or 'unknown'),
+				(dbg.currentline or 0)))
+			_G[meta.replacement][key]=value
+		end,
+	}
+	rawset(_G, deprecated_global_name, {})
+	setmetatable(_G[deprecated_global_name], meta)
+end
+
+
+-- deprecated(1) -- December 2018 - Deprecation of groups display_modpack_node and display_lib_node
+-- Group to be removed from display API register_lbm
+minetest.after(0, function()
+	deprecated_group("display_modpack_node", "display_api")
+	deprecated_group("display_lib_node", "display_api")
+end)
+
+-- deprecated(2) -- December 2018 - Deprecation of display_lib
+deprecated_global_table('display_lib', 'display_api')

display_api/display.lua

@@ -0,0 +1,318 @@
+--[[
+		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/>.
+--]]
+
+-- 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
+
+-- Maximum entity position relative to the node pos
+local max_entity_pos = 1.5
+
+local wallmounted_rotations = {
+	[0]={x=1, y=0, z=0}, [1]={x=3, y=0, z=0},
+	[2]={x=0, y=3, z=0}, [3]={x=0, y=1, z=0},
+	[4]={x=0, y=0, z=0}, [5]={x=0, y=2, z=0},
+}
+
+local facedir_rotations = {
+	[ 0]={x=0, y=0, z=0}, [ 1]={x=0, y=3, z=0},
+	[ 2]={x=0, y=2, z=0}, [ 3]={x=0, y=1, z=0},
+	[ 4]={x=3, y=0, z=0}, [ 5]={x=0, y=3, z=3},
+	[ 6]={x=1, y=0, z=2}, [ 7]={x=0, y=1, z=1},
+	[ 8]={x=1, y=0, z=0}, [ 9]={x=0, y=3, z=1},
+	[10]={x=3, y=0, z=2}, [11]={x=0, y=1, z=3},
+	[12]={x=0, y=0, z=1}, [13]={x=3, y=0, z=1},
+	[14]={x=2, y=0, z=1}, [15]={x=1, y=0, z=1},
+	[16]={x=0, y=0, z=3}, [17]={x=1, y=0, z=3},
+	[18]={x=2, y=0, z=3}, [19]={x=3, y=0, z=3},
+	[20]={x=0, y=0, z=2}, [21]={x=0, y=1, z=2},
+	[22]={x=0, y=2, z=2}, [23]={x=0, y=3, z=2},
+}
+
+-- Compute other useful values depending on wallmounted and facedir param
+local wallmounted_values = {}
+local facedir_values = {}
+
+local function compute_values(r)
+	local function rx(v) return { x=v.x, y=v.z, z=-v.y} end
+	local function ry(v) return { x=-v.z, y=v.y, z=v.x} end
+	local function rz(v) return { x=v.y, y=-v.x, z=v.z} end
+
+	local d = { x = 0, y = 0, z = 1 }
+	local w = { x = 1, y = 0, z = 0 }
+	local h = { x = 0, y = 1, z = 0 }
+
+	-- Important to keep z rotation first (not same results)
+	for _ = 1, r.z do d, w, h = rz(d), rz(w), rz(h) end
+	for _ = 1, r.x do d, w, h = rx(d), rx(w), rx(h) end
+	for _ = 1, r.y do d, w, h = ry(d), ry(w), ry(h) end
+
+	return {
+		rotation=r, depth=d, width=w, height=h,
+		restricted=(r.x==0 and r.z==0) }
+end
+
+for i, r in pairs(facedir_rotations) do
+	facedir_values[i] = compute_values(r)
+end
+
+for i, r in pairs(wallmounted_rotations) do
+	wallmounted_values[i] = compute_values(r)
+end
+
+-- Detect rotation restriction
+local rotation_restricted = nil
+minetest.register_entity('display_api:dummy_entity', {
+	collisionbox = { 0, 0, 0, 0, 0, 0 },
+	visual = "upright_sprite",
+	textures = {} })
+
+function display_api.is_rotation_restricted()
+	if rotation_restricted == nil then
+		local objref = minetest.add_entity(
+			{x=0, y=0, z=0}, 'display_api:dummy_entity')
+		if objref then
+			rotation_restricted = objref.set_rotation == nil
+			objref:remove()
+		end
+	end
+	return rotation_restricted
+end
+
+-- Clip position property to maximum entity position
+
+local function clip_pos_prop(posprop)
+	if posprop then
+		return math.max(-max_entity_pos, math.min(max_entity_pos, posprop))
+	else
+		return 0
+	end
+end
+
+-- Get values needed for orientation computation of node
+
+local function get_orientation_values(node)
+	local ndef = minetest.registered_nodes[node.name]
+
+	if ndef then
+		local paramtype2 = ndef.paramtype2
+		if paramtype2 == "wallmounted" or paramtype2 == "colorwallmounted" then
+			return wallmounted_values[node.param2 % 8]
+		elseif paramtype2 == "facedir" or paramtype2 == "colorfacedir"  then
+			return facedir_values[node.param2 % 32]
+		else
+			-- No orientation or unknown orientation type
+			return facedir_values[0]
+		end
+	end
+end
+
+-- Gets the display entities attached with a node.
+-- Add missing and remove duplicates
+
+local function get_display_objrefs(pos, create)
+	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, max_entity_pos)) do
+			local entity = objref:get_luaentity()
+			if entity and ndef.display_entities[entity.name] and
+				 entity.nodepos and vector.equals(pos, entity.nodepos) then
+				if objrefs[entity.name] then
+					objref:remove() -- Remove duplicates
+				else
+					objrefs[entity.name] = objref
+				end
+			end
+		end
+		if create then
+			-- Add missing
+			for name, _ in pairs(ndef.display_entities) do
+				if not objrefs[name] then
+					objrefs[name] = minetest.add_entity(pos, name,
+						minetest.serialize({ nodepos = pos }))
+				end
+			end
+		end
+	end
+	return objrefs
+end
+
+--- Force entity update : position and texture
+function display_api.update_entities(pos)
+
+	local node = minetest.get_node(pos)
+	local ndef = minetest.registered_nodes[node.name]
+	local ov = get_orientation_values(node)
+
+	for _, objref in pairs(get_display_objrefs(pos, true)) do
+		local edef = ndef.display_entities[objref:get_luaentity().name]
+		local depth = clip_pos_prop(edef.depth)
+		local right = clip_pos_prop(edef.right)
+		local top = clip_pos_prop(edef.top)
+
+		objref:set_pos({
+			x = pos.x + ov.depth.x*depth + ov.width.x*right - ov.height.x*top,
+			y = pos.y + ov.depth.y*depth + ov.width.y*right - ov.height.y*top,
+			z = pos.z + ov.depth.z*depth + ov.width.z*right - ov.height.z*top,
+		})
+
+		if objref.set_rotation then
+			objref:set_rotation({
+				x = ov.rotation.x*math.pi/2,
+				y = ov.rotation.y*math.pi/2 + (edef.yaw or 0),
+				z = ov.rotation.z*math.pi/2,
+			})
+		else
+			if ov.rotation.x ~=0 or ov.rotation.y ~= 0 then
+				minetest.log("warning", string.format(
+					"[display_api] unable to rotate correctly entity for node at %s without set_rotation method.",
+					minetest.pos_to_string(pos)))
+			end
+			objref:set_yaw(ov.rotation.y*math.pi/2 + (edef.yaw or 0))
+		end
+
+		-- Call on_display_update callback of a node for one of its display entities
+		if edef.on_display_update then
+			edef.on_display_update(pos, objref)
+		end
+	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
+		if string.sub(staticdata, 1, string.len("return")) == "return" then
+			local data = minetest.deserialize(staticdata)
+			if data and type(data) == "table" then
+				entity.nodepos = data.nodepos
+			end
+			entity.object:set_armor_groups({immortal=1})
+		end
+
+		if entity.nodepos then
+			local node = minetest.get_node(entity.nodepos)
+			local ndef = minetest.registered_nodes[node.name]
+			if ndef and ndef.display_entities then
+				local edef = ndef.display_entities[entity.name]
+				if edef then
+					-- Call on_display_update callback of the entity to build texture
+					if edef.on_display_update then
+						edef.on_display_update(entity.nodepos, entity.object)
+					end
+					return
+				end
+			end
+		end
+		-- If we got here, this display entity is buggy and should be removed
+		entity.object:remove()
+	end
+end
+
+--- On_place callback for display_api items.
+-- Does nothing more than preventing node from being placed on ceiling or ground
+-- TODO:When MT<5 is not in use anymore, simplify this
+function display_api.on_place(itemstack, placer, pointed_thing, override_param2)
+	local ndef = itemstack:get_definition()
+	local dir = {
+		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 rotation_restriction = display_api.is_rotation_restricted()
+
+	if rotation_restriction then
+		-- If item is not placed on a wall, use the player's view direction instead
+		if dir.x == 0 and dir.z == 0 then
+			dir = placer:get_look_dir()
+		end
+		dir.y = 0
+	end
+
+	local param2 = 0
+	if ndef then
+		if ndef.paramtype2 == "wallmounted" or
+			ndef.paramtype2 == "colorwallmounted" then
+			param2 = minetest.dir_to_wallmounted(dir)
+
+		elseif ndef.paramtype2 == "facedir" or
+			ndef.paramtype2 == "colorfacedir"  then
+			param2 = minetest.dir_to_facedir(dir, not rotation_restriction)
+		end
+	end
+	return minetest.item_place(itemstack, placer, pointed_thing,
+		param2 + (override_param2 or 0))
+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)
+	for _, objref in pairs(get_display_objrefs(pos)) do
+		objref:remove()
+	end
+end
+
+-- On_rotate (screwdriver) callback for display_api items. Prevents invalid
+-- rotations and reorients entities.
+function display_api.on_rotate(pos, node, user, _, new_param2)
+	node.param2 = new_param2
+	local ov = get_orientation_values(node)
+
+	if ov.restricted or not display_api.is_rotation_restricted() then
+		minetest.swap_node(pos, node)
+		display_api.update_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_entities[entity_name] then
+		minetest.register_entity(':'..entity_name, {
+			collisionbox = { 0, 0, 0, 0, 0, 0 },
+			visual = "upright_sprite",
+			textures = {},
+			on_activate = display_api.on_activate,
+			get_staticdata = function(self)
+				return minetest.serialize({ nodepos = self.nodepos })
+			end,
+		})
+	end
+end
+
+minetest.register_lbm({
+	label = "Update display_api entities",
+	name = "display_api:update_entities",
+	run_at_every_load = true,
+	nodenames = {"group:display_api",
+		"group:display_modpack_node", "group:display_lib_node"}, -- See deprecated(1)
+	action = function(pos, node) display_api.update_entities(pos) end,
+})

display_api/init.lua

@@ -1,242 +1,31 @@
 --[[
-    display_api mod for Minetest - Library to add dynamic display
-    capabilities to nodes
-    (c) Pierre-Yves Rollo
+		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 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.
+		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/>.
+		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
+-------------------
+
 display_api = {}
+display_api.name = minetest.get_current_modname()
+display_api.path = minetest.get_modpath(display_api.name)
 
--- 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
+-- Inclusions
+-------------
 
--- Miscelaneous values depending on wallmounted param2
-local wallmounted_values = {
-	[2]={dx=-1, dz=0,  rx=0,  rz=-1, yaw=-math.pi/2},
-	[3]={dx=1,  dz=0,  rx=0,  rz=1,  yaw=math.pi/2 },
-	[4]={dx=0,  dz=-1, rx=1,  rz=0,  yaw=0         },
-	[5]={dx=0,  dz=1,  rx=-1, rz=0,  yaw=math.pi   }
-}
-
--- Miscelaneous values depending on facedir param2
-local facedir_values = {
-	[0]={dx=0,  dz=-1, rx=1,  rz=0,  yaw=0         },
-	[1]={dx=-1, dz=0,  rx=0,  rz=-1, yaw=-math.pi/2},
-	[2]={dx=0,  dz=1,  rx=-1, rz=0,  yaw=math.pi   },
-	[3]={dx=1,  dz=0,  rx=0,  rz=1,  yaw=math.pi/2 }
-}
-
--- dx/dy = depth vector, rx/ly = right vector, yaw = yaw of entity,
-local function get_values(node)
-	local ndef = minetest.registered_nodes[node.name]
-	
-	if ndef then
-		local paramtype2 = ndef.paramtype2
-		if paramtype2 == "wallmounted" or paramtype2 == "colorwallmounted" then
-			return wallmounted_values[node.param2 % 8]
-		elseif paramtype2 == "facedir" or paramtype2 == "colorfacedir"  then
-			return facedir_values[node.param2 % 32]
-		end
-	end
-end
-
---- Checks if the object is related to the given position
-local function check_entity_pos(pos, objref)
-	local real_pos = vector.round(objref:get_pos())
-	local pos_hash = objref:get_luaentity().pos
-	if pos_hash == nil then
-		return vector.equals(real_pos, vector.round(pos))
-	else
-		return vector.equals(minetest.get_position_from_hash(pos_hash), pos)
-	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, 1.5)) do
-			local entity = objref:get_luaentity()
-			if entity and ndef.display_entities[entity.name] and check_entity_pos(pos, objref) 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(-1.5, math.min(1.5, 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 right = clip_pos_prop(props.right)
-			local top = clip_pos_prop(props.top)
-			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 - top,
-				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
-		objref:get_luaentity().pos = minetest.hash_node_position(pos)
-		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
-		if string.sub(staticdata, 1, string.len("return")) == "return" then
-			local data = core.deserialize(staticdata)
-			if data and type(data) == "table" then
-				entity.pos = data.pos
-			end
-		end
-		entity.object:set_armor_groups({immortal=1})
-		local pos
-		if entity.pos then
-			pos = minetest.get_position_from_hash(entity.pos)
-		else
-			pos = entity.object:getpos()
-		end
-		display_api.update_entities(pos)
-	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, override_param2)
-	local ndef = itemstack:get_definition()
-	local above = pointed_thing.above
-	local under = pointed_thing.under
-	local dir = {x = under.x - above.x,
-	             y = 0,
-	             z = under.z - above.z}
-	
-	-- If item is not placed on a wall, use the player's view direction instead
-	if dir.x == 0 and dir.z == 0 then
-		dir = placer:get_look_dir()
-		dir.y = 0
-	end
-	
-	local param2 = 0
-	if ndef then
-		local paramtype2 = ndef.paramtype2
-		if paramtype2 == "wallmounted" or paramtype2 == "colorwallmounted" then
-			param2 = minetest.dir_to_wallmounted(dir)
-		elseif paramtype2 == "facedir" or paramtype2 == "colorfacedir"  then
-			param2 = minetest.dir_to_facedir(dir)
-		end
-	end
-	return minetest.item_place(itemstack, placer, pointed_thing, param2 + (override_param2 or 0))
-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 invalid rotations and reorients entities.
-function display_api.on_rotate(pos, node, user, _, new_param2)
-	node.param2 = new_param2
-	if get_values(node) then
-		minetest.swap_node(pos, node)
-		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,
-			get_staticdata = function(self)
-				return minetest.serialize({
-					pos = self.pos,
-				})
-			end,
-		})
-	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
+dofile(display_api.path.."/display.lua")
+dofile(display_api.path.."/deprecation.lua")

display_api/mod.conf

@@ -0,0 +1,2 @@
+name=display_api
+description=A library for adding dynamic textures on nodes

font_api/API.md

@@ -1,5 +1,5 @@
-# Font Lib API
-This document describes Font Lib API. Font Lib creates textures for font display on entities.
+# Font API
+This document describes Font API. Font API creates textures for font display on entities.
 
 ## Settings
 ### default_font
@@ -7,35 +7,114 @@ 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
+## Use font_api with display_api (to display text on nodes)
+### Base setup
+Font_api offers a direct integration with display_api to display text on nodes.
 
+First of all, create a display node with an entity.
+To do this, refer to API.md in display_api mod, in particular "Howto register a display node".
+
+The only requirement then is to connect the `on_display_update` callback of the display entity to `font_api.on_display_update`:
+
+```
+minetest.register_node("mymod:test_text_node", {
+	...
+	paramtype2 = "facedir",
+	...
+	groups = { display_api = 1, ... },
+	...
+	display_entities = {
+		["mymod:text"] = {
+			depth = -0.5 - display_api.entity_spacing,
+			on_display_update = font_api.on_display_update },
+	}
+	...
+	on_place = display_api.on_place,
+	on_construct = display_api.on_construct,
+	on_destruct = display_api.on_destruct,
+	on_rotate = display_api.on_rotate,
+	...
+})
+```
+
+At this step, your node already displays text form "display_text" (by default) node meta. If you want to store your text into another meta data field, add a `meta_text` field to display entity definition.
+
+But it uses defaults (default font, default size, default color). Likely you need something more.
+
+### Style your text
+Font style and size can be chosen by adding some more entries to the display_entities definition table.
+
+#### Font size
+Font size can be defined in various ways (maybe more in the future).
+Start with a number of lines, and font_api will make it fit to the entity size.
+  * `maxlines` or `lines`: Number of maximum lines of text to be displayed. The font height will be adjusted accordingly.
+
+Then specify the char width. Two methods available:
+  * `aspect_ratio`: Defines the aspect ratio of chars. Works with all fonts. Should not be used if `columns` is specified.
+	* `columns`: Only if using a fixed width font, specifies the number of columns to display.
+
+#### Font style
+  * `font_name`: name of the font to use. Should correspond to a registered font (from a font mod). If not specified or font not found, default font is used.
+  * `color`: color to be used (default black).
+  * `halign`: Horizontal alignment: "left", "center" or "right" (default "center").
+  * `valign`: Vertical alignement: "top", "middle" or "bottom" (default "middle").
+
+### Example
+Using blue //botic// font, three lines height, aligned top left. Text stored in "text" node meta.
+```
+minetest.register_node("mymod:test_text_node", {
+	...
+	...
+	display_entities = {
+		["mymod:text"] = {
+			depth = -0.5 - display_api.entity_spacing,
+			on_display_update = font_api.on_display_update
+			meta_text = "text",
+			font_name = "botic",
+			color = "#0000FF",
+			maxlines = 3,
+			aspect_ratio = 0.5,
+			halign = "left",
+			valign = "top",
+			},
+	}
+	...
+})
+```
+## Provided methods
 ### font_api.get_default_font_name()
 Returns de default font name.
 
 ### font_api.register_font(font_name, font_def)
 Register a new font.
-**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...).
-**font_def**: Font definition table (see **Font definition table** below).
+  * `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...).
+  * `font_def`: Font definition table (see **Font definition table** below).
 
 ### font_api.on_display_update(pos, objref)
 Standard on_display_update entity callback.
-
-**pos**: Node position
-
-**objref**: Object reference of entity
+  * `pos`: Node position
+  * `objref`: Object reference of entity
 
 Node should have a corresponding display_entity with size, resolution and maxlines fields and optionally halign, valign and color fields.
 
-### Font definition table
+## Font definition table
 Font definition table used by **font_api.register_font** and **font\_api.Font:new** may/can contain following elements:
 
-* **height** (required): Font height in pixels (all font textures should have the same height) .
-* **widths** (required): Array of character widths in pixels, indexed by UTF codepoints.
-* **margintop** (optional): Margin (in texture pixels) added on top of each char texture.
-* **marginbottom** (optional): Margin (in texture pixels) added at bottom of each char texture.
-* **linespacing** (optional): Spacing (in texture pixels) between each lines.
+* `height` (required): Font height in pixels (all font textures should have the same height) .
+* `widths` (required): Array of character widths in pixels, indexed by UTF codepoints.
+* `margintop` (optional): Margin (in texture pixels) added on top of each char texture.
+* `marginbottom` (optional): Margin (in texture pixels) added at bottom of each char texture.
+* `linespacing` (optional): Spacing (in texture pixels) between each lines.
 
-**margintop**, **marginbottom** and **linespacing** can be negative numbers (default 0) and are to be used to adjust various font styles to each other.
+`margintop`, `marginbottom` and `linespacing` can be negative numbers (default 0) and are to be used to adjust various font styles to each other.
+
+Font attributes around a single char:\
+![Font attributes on a char](doc/font.svg)
+
+Font attributes effects on several lines:\
+![Font attributes on lines](doc/lines.svg)
+
+#### Additional requirements
 
 Font must have a char 0 which will be used to display any unknown char.
 
@@ -57,7 +136,7 @@ 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. 
+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__
 
@@ -95,51 +174,28 @@ __Syntax__
 A font usable with font API. This class is supposed to be for internal use but who knows.
 
 ### font\_api.Font:new(def)
-Create a new font object. 
+Create a new font object.
+  * `def` is a table containing font definition. See **Font definition table** above.
 
-**def** is a table containing font definition. See **Font definition table** above.
-
-### font:get_char_width(char)
-Returns the width of char **char** in texture pixels.
-
-**char**: Unicode codepoint of char.
+### font:get_char_width(codepoint)
+Returns the width of char `codepoint` in texture pixels.
+  * `codepoint`: Unicode codepoint of char.
 
 ### font:get_height(nb_of_lines)
 Returns line(s) height. Takes care of top and bottom margins and line spacing.
-
-**nb_of_lines**: Number of lines in the text.
+  * `nb_of_lines`: Number of lines in the text.
 
 ### font:get_width(line)
-
 Returns the width of a text line. Beware, if line contains any new line char, they are ignored.
+  * `line`: Line of text which the width will be computed.
 
-**line**: Line of text which the width will be computed.
-
-### font:make_line_texture(line, texturew, x, y)
-Create a texture for a text line.
-
-**line**: Line of text to be rendered in texture.
-
-**texturew**: Width of the texture (extra text is not rendered).
-
-**x**: Starting x position in texture.
-
-**y**: Vertical position of the line in texture.
-
-### font:make_text_texture(text, texturew, textureh, maxlines, halign, valign, color)
+### font:renter(text, texturew, textureh, style)
 Builds texture for a multiline colored text.
-
-**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"/"center"/"right") (optional).
-
-**valign**: Vertical text align ("top"/"center"/"bottom") (optional).
-
-**color**: Color of the text (optional).
-
+  * `text`: Text to be rendered.
+  * `texturew`: Width of the texture (extra text will be truncated).
+  * `textureh`: Height of the texture (extra text will be truncated).
+  * `style`: A table with style indications:
+    - `lines` or `maxlines`: Maximum number of lines (default none).
+    - `halign`: Horizontal text align: "left"/"center"/"right" (default "center")
+    - `valign`: Vertical text align: "top"/"middle"/"bottom" (default "middle")
+    - `color`: Color of the text (default black)

font_api/README.md

@@ -1,6 +1,6 @@
-# Font Lib
+# Font API
 
-This library for font display on entities (to be used with display_api for sign creation).
+A library for rendernig text on textures (to be used with display_api for sign creation).
 
 **Dependancies**: default
 
@@ -12,3 +12,20 @@ This library for font display on entities (to be used with display_api for sign
 
 For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?t=13563) at the Minetest forums.
 
+## Extra fonts
+
+You can add fonts by installing fonts mod. Be aware that each font comes with numerous textures. This can result in slowing media downloading and/or client display.
+
+Font mods can be found here:
+
+ * [Metro](https://github.com/pyrollo/display_modpack/tree/master/font_metro): A multipurpose font with many chars (uppercase, lowercase and accentuated latin letters, usual signs, cyrillic and greek letters).
+ * [OldWizard](https://github.com/pyrollo/font_oldwizard): An old style gothic font.
+ * [Botic](https://github.com/pyrollo/font_botic): A scifi style font.
+
+ ## Deprecation notice (for modders)
+
+ ### December 2018
+ Following object is deprecate, shows a warning in log when used:
+ * `font_lib` global table (use `font_api` global table instead);
+
+ This object will be removed in the future.

font_api/depends.txt

@@ -0,0 +1 @@
+display_api?

font_api/deprecation.lua

@@ -0,0 +1,59 @@
+--[[
+	font_api mod for Minetest - Library creating textures with fonts and text
+	(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/>.
+--]]
+
+-- Deprecation
+
+function deprecated_global_table(deprecated_global_name, replacement_global_name)
+	assert(type(deprecated_global_name) == 'string', "deprecated_global_name should be a string.")
+	assert(type(replacement_global_name) == 'string', "replacement_global_name should be a string.")
+	assert(deprecated_global_name ~= '', "deprecated_global_name should not be empty.")
+	assert(replacement_global_name ~= '', "replacement_global_name should not be empty.")
+	assert(rawget(_G, deprecated_global_name) == nil, "deprecated global does not exist.")
+	if _G[replacement_global_name] == nil then
+		minetest.log('warning', string.format(
+			'Replacement global "%s" does not exists.', replacement_global_name))
+		return
+	end
+	local meta = {
+		deprecated = deprecated_global_name,
+		replacement = replacement_global_name,
+		__index = function(table, key)
+			local meta = getmetatable(table)
+			local dbg = debug.getinfo(2, "lS")
+			minetest.log("warning", string.format(
+				'Accessing deprecated "%s" table, "%s" should be used instead (%s:%d).',
+				meta.deprecated, meta.replacement, (dbg.short_src or 'unknown'),
+				(dbg.currentline or 0)))
+			return _G[meta.replacement][key]
+		end,
+		__newindex = function(table, key, value)
+			local meta = getmetatable(table)
+			local dbg = debug.getinfo(2, "lS")
+			minetest.log("warning", string.format(
+				'Accessing deprecated "%s" table, "%s" should be used instead (%s:%d).',
+				meta.deprecated, meta.replacement, (dbg.short_src or 'unknown'),
+				(dbg.currentline or 0)))
+			_G[meta.replacement][key]=value
+		end,
+	}
+	rawset(_G, deprecated_global_name, {})
+	setmetatable(_G[deprecated_global_name], meta)
+end
+
+-- deprecated(2) -- December 2018 - Deprecation of font_lib
+deprecated_global_table('font_lib', 'font_api')

font_api/display_api.lua

@@ -0,0 +1,76 @@
+--[[
+	font_api mod for Minetest - Library creating textures with fonts and text
+	(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/>.
+--]]
+-- Integration with display API
+
+if minetest.get_modpath("display_api") then
+	--- Standard on_display_update entity callback.
+	-- Node should have properly configured display_entity.
+	-- @param pos Node position
+	-- @param objref Object reference of entity
+
+	font_api.on_display_update = function (pos, objref)
+		local meta = minetest.get_meta(pos)
+		local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
+		local entity = objref:get_luaentity()
+
+		if not entity or not ndef.display_entities[entity.name] then
+			return
+		end
+
+		local def = ndef.display_entities[entity.name]
+		local font = font_api.get_font(meta:get_string("font") ~= ""
+			and meta:get_string("font") or def.font_name)
+
+		local text = meta:get_string(def.meta_text or "display_text")
+
+		-- Compute entity resolution accroding to given attributes
+		local texturew, textureh
+		textureh = font:get_height(def.lines or def.maxlines or 1)
+
+		if def.columns then
+			if font.fixedwidth then
+				texturew = def.columns * font.fixedwidth
+				if def.aspect_ratio then
+					minetest.log('warning', "[font_api] 'aspect_ratio' ignored because 'columns' is specified")
+				end
+			else
+				minetest.log('warning', "[font_api] 'columns' ignored because '"..font.name.."' is not a fixed width font.")
+			end
+		end
+
+		if not texturew then
+			if not def.aspect_ratio then
+				minetest.log('warning', "[font_api] No 'aspect_ratio' specified, using default 1.")
+			end
+			texturew = textureh * def.size.x / def.size.y	/ (def.aspect_ratio or 1)
+		end
+
+		objref:set_properties({
+			textures={ font:render(text, texturew, textureh, {
+				lines = def.maxlines or def.lines,
+				halign = def.halign,
+				valign = def.valign,
+				color = def.color} ) },
+			visual_size = def.size,
+		})
+	end
+else
+	font_api.on_display_update = function (pos, objref)
+		minetest.log('error', '[font_api] font_api.on_display_update called but display_api mod not enabled.')
+	end
+end

font_api/fallbacks.lua

@@ -1,20 +1,19 @@
 --[[
-    font_api mod for Minetest - Library to add font display capability
-    to display_api mod.
-    (c) Pierre-Yves Rollo
+	font_api mod for Minetest - Library creating textures with fonts and text
+	(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 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.
+	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/>.
+	You should have received a copy of the GNU General Public License
+	along with this program.  If not, see <http://www.gnu.org/licenses/>.
 --]]
 
 -- This is the unicode char fallback map. If a char is not present in

font_api/font.lua

@@ -1,20 +1,19 @@
 --[[
-    font_api mod for Minetest - Library to add font display capability
-    to display_api mod.
-    (c) Pierre-Yves Rollo
+	font_api mod for Minetest - Library creating textures with fonts and text
+	(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 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.
+	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/>.
+	You should have received a copy of the GNU General Public License
+	along with this program.  If not, see <http://www.gnu.org/licenses/>.
 --]]
 
 -- Fallback table
@@ -39,14 +38,15 @@ local function char_to_codepoint(str)
 	local bytes = get_char_bytes(str)
 	if bytes == 1 then
 	    return str:byte(1)
-	elseif bytes == 2 then
+	elseif bytes == 2 and str:byte(2) ~= nil then
 		return (str:byte(1) - 0xC2) * 0x40
 			+ str:byte(2)
-	elseif bytes == 3 then
+	elseif bytes == 3 and str:byte(2) ~= nil and str:byte(3) ~= nil then
 		return (str:byte(1) - 0xE0) * 0x1000
 			+ str:byte(2) % 0x40 * 0x40
 			+ str:byte(3) % 0x40
-	elseif bytes == 4 then -- Not tested
+	elseif bytes == 4 and str:byte(2) ~= nil and str:byte(3) ~= nil
+		and str:byte(4) ~= nil then -- Not tested
 		return (str:byte(1) - 0xF0) * 0x40000
 			+ str:byte(2) % 0x40 * 0x1000
 			+ str:byte(3) % 0x40 * 0x40
@@ -54,20 +54,6 @@ local function char_to_codepoint(str)
 	end
 end
 
--- Split multiline text into array of lines, with <maxlines> maximum lines.
--- Can not use minetest string.split as it has bug if first line(s) empty
-local function split_lines(text, maxlines)
-	local lines = {}
-	local pos = 1
-	repeat
-		local found = string.find(text, "\n", pos)
-		found = found or #text + 1
-		lines[#lines + 1] = string.sub(text, pos, found - 1)
-		pos = found + 1
-	until (maxlines and (#lines >= maxlines)) or (pos > (#text + 1))
-	return lines
-end
-
 --------------------------------------------------------------------------------
 --- Font class
 
@@ -103,6 +89,16 @@ function Font:new(def)
 	local font = table.copy(def)
 	setmetatable(font, self)
 	self.__index = self
+
+	-- Check if fixedwidth
+	for codepoint, width in pairs(font.widths) do
+		font.fixedwidth = font.fixedwidth or width
+		if width ~= font.fixedwidth then
+			font.fixedwidth = nil
+			break
+		end
+	end
+
 	return font
 end
 
@@ -121,6 +117,12 @@ function Font:get_next_char(text)
 
 	local codepoint = char_to_codepoint(text)
 
+	if codepoint == nil then
+		minetest.log("warning",
+			"[font_api] Encountered a non UTF char, not displaying text.")
+		return nil, ''
+	end
+
 	-- Fallback mechanism
 	if self.widths[codepoint] == nil then
 		local char = text:sub(1, bytes)
@@ -138,11 +140,11 @@ end
 --- Returns the width of a given char
 -- @param char : codepoint of the char
 -- @return Char width
-
-function Font:get_char_width(char)
-	-- Replace chars with no texture by the NULL(0) char
-	if self.widths[char] ~= nil then
-		return self.widths[char]
+function Font:get_char_width(codepoint)
+	if self.fixedwidth then
+		return self.fixedwidth
+	elseif self.widths[codepoint] then
+		return self.widths[codepoint]
 	else
 		return self.widths[0]
 	end
@@ -179,94 +181,94 @@ function Font:get_width(line)
 
 	while line ~= "" do
 		codepoint, line = self:get_next_char(line)
+		if codepoint == nil then return 0 end -- UTF Error
 		width = width + self:get_char_width(codepoint)
 	end
 
 	return width
 end
 
---- Builds texture part for a text line
--- @param line Text line to be rendered
--- @param texturew 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:make_line_texture(line, texturew, x, y)
-	local codepoint
-	local texture = ""
-	line = line or ''
-
-	while line ~= '' do
-		codepoint, line = self:get_next_char(line)
-
-		-- Add image only if it is visible (at least partly)
-		if x + self.widths[codepoint] >= 0 and x <= texturew then
-			texture = texture..
-				string.format(":%d,%d=font_%s_%04x.png",
-				              x, y, self.name, codepoint)
-		end
-		x = x + self.widths[codepoint]
-	end
-
-	return texture
-end
-
---- Builds texture for a multiline colored text
--- @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
+--- Legacy make_text_texture method (replaced by "render" - Dec 2018)
 
 function Font:make_text_texture(text, texturew, textureh, maxlines,
-                                         halign, valign, color)
-	local texture = ""
-	local lines = {}
-	local textheight = 0
-	local y
+		halign, valign, color)
+		return self:render(text, texturew, textureh, {
+			lines = maxlines,
+			valign = valign,
+			halign = halign,
+			color = color
+		})
+end
 
-	-- Split text into lines (limited to maxlines fist lines)
-	for num, line in pairs(split_lines(text, maxlines)) do
-		lines[num] = { text = line, width = self:get_width(line) }
+--- Render text with the font in a view
+-- @param text Text to be rendered
+-- @param texturew Width (in pixels) of the texture (extra text will be truncated)
+-- @param textureh Height (in pixels) of the texture (extra text will be truncated)
+-- @param style Style of the rendering:
+--		- lines: maximum number of text lines (if text is limited)
+--		- halign: horizontal align ("left"/"center"/"right")
+--		- valign: vertical align ("top"/"center"/"bottom")
+--		- color: color of the text ("#rrggbb")
+-- @return Texture string
+
+function Font:render(text, texturew, textureh, style)
+	local style = style or {}
+
+	-- Split text into lines (and limit to style.lines # of lines)
+	local lines = {}
+	local pos = 1
+	local found, line
+	repeat
+		found = string.find(text, "\n", pos) or (#text + 1)
+		line = string.sub(text, pos, found - 1)
+		lines[#lines + 1] = { text = line, width = self:get_width(line) }
+		pos = found + 1
+	until (style.lines and (#lines >= style.lines)) or (pos > (#text + 1))
+
+	if not #lines then
+		return ""
 	end
 
-	textheight = self:get_height(#lines)
+	local x, y, codepoint
+	local texture = ""
+	local textheight = self:get_height(#lines)
 
-	if #lines then
-		if valign == "top" then
-			y = 0
-		elseif valign == "bottom" then
-			y = textureh - textheight
-		else
-			y = (textureh - textheight) / 2
-		end
+	if style.valign == "top" then
+		y = 0
+	elseif style.valign == "bottom" then
+		y = textureh - textheight
+	else
+		y = (textureh - textheight) / 2
 	end
 
 	y = y + (self.margintop or 0)
 
 	for _, line in pairs(lines) do
-		if halign == "left" then
-			texture = texture..
-				self:make_line_texture(line.text, texturew,
-				0, y)
-		elseif halign == "right" then
-			texture = texture..
-				self:make_line_texture(line.text, texturew,
-				texturew - line.width, y)
+		if style.halign == "left" then
+			x = 0
+		elseif style.halign == "right" then
+			x = texturew - line.width
 		else
-			texture = texture..
-				self:make_line_texture(line.text, texturew,
-				(texturew - line.width) / 2, y)
+			x = (texturew - line.width) / 2
+		end
+
+		while line.text ~= '' do
+			codepoint, line.text = self:get_next_char(line.text)
+			if codepoint == nil then return '' end -- UTF Error
+
+			-- Add image only if it is visible (at least partly)
+			if x + self.widths[codepoint] >= 0 and x <= texturew then
+				texture = texture..
+					string.format(":%d,%d=font_%s_%04x.png", x, y, self.name, codepoint)
+			end
+			x = x + self.widths[codepoint]
 		end
 
 		y = y + self:get_height() + (self.linespacing or 0)
 	end
-
 	texture = string.format("[combine:%dx%d", texturew, textureh)..texture
-	if color then texture = texture.."^[colorize:"..color end
+	if style.color then
+		texture = texture.."^[colorize:"..style.color
+	end
 	return texture
 end

font_api/fontform.lua

@@ -1,20 +1,19 @@
 --[[
-    font_api mod for Minetest - Library to add font display capability
-    to display_api mod.
-    (c) Pierre-Yves Rollo
+	font_api mod for Minetest - Library creating textures with fonts and text
+	(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 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.
+	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/>.
+	You should have received a copy of the GNU General Public License
+	along with this program.  If not, see <http://www.gnu.org/licenses/>.
 --]]
 
 local modname = minetest.get_current_modname()
@@ -101,16 +100,18 @@ local function show_font_formspec(playername)
 	end
 	table.sort(fonts)
 
-	local fs = 'size[4,'..(#fonts + 0.8)..']'
-		..default.gui_bg..default.gui_bg_img..default.gui_slots
-		..'button_exit[0,'..(#fonts)..';4,1;cancel;Cancel]'
+	local fs = string.format(
+		"size[4,%s]%s%s%sbutton_exit[0,%s;4,1;cancel;Cancel]",
+		#fonts + 0.8, default.gui_bg, default.gui_bg_img, default.gui_slots,
+		#fonts)
 
 	for line = 1, #fonts do
 		local font = font_api.get_font(fonts[line])
-		fs = fs..'image[0.1,'..(line-0.9)..';4.5,0.8;'
-		..font:make_text_texture(font.name, font:get_height()*5,
+		local texture = font:make_text_texture(font.name, font:get_height()*5,
 			font:get_height()*1.2, 1, "center", "top", "#fff")
-		..']button_exit[0,'..(line-1)..';4,1;font_'..font.name..';]'
+		fs = string.format(
+			"%simage[0.1,%s;4.5,0.8;%s]button_exit[0,%s;4,1;font_%s;]",
+			fs, line-0.9, texture, line-1, font.name)
 	end
 	minetest.show_formspec(context.playername, modname..':font_list', fs)
 end
@@ -127,7 +128,8 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 	local playername = player:get_player_name()
 	local context = get_context(playername)
 
-	if minetest.is_protected(context.pos, playername) then
+	if not context.pos
+	or minetest.is_protected(context.pos, playername) then
 		return true
 	end
 
@@ -139,16 +141,26 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 				display_api.update_entities(context.pos)
 			end
 		end
-		-- Using after to avoid the "double close" bug
-		minetest.after(0, show_node_formspec, playername, context.pos)
+
+		if context.callback and type(context.callback) == "function" then
+			-- Using after to avoid the "double close" bug
+			minetest.after(0, context.callback, playername, context.pos)
+		else
+			-- Using after to avoid the "double close" bug
+			minetest.after(0, show_node_formspec, playername, context.pos)
+		end
 	end
 	return true
 end)
 
-function font_api.show_font_list_from_pos(player, pos)
+-- @param player Player viewing the form
+-- @param pos Node pos
+-- @param callback function(playername, pos) to be called on form close
+function font_api.show_font_list(player, pos, callback)
 	if minetest.is_player(player) then
 		local context = get_context(player:get_player_name())
 		context.pos = pos
+		context.callback = callback
 		show_font_formspec(player:get_player_name())
 	end
 end

font_api/init.lua

@@ -1,20 +1,19 @@
 --[[
-    font_api mod for Minetest - Library to add font display capability
-    to display_api mod.
-    (c) Pierre-Yves Rollo
+	font_api mod for Minetest - Library creating textures with fonts and text
+	(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 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.
+	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/>.
+	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
@@ -30,36 +29,7 @@ font_api.path = minetest.get_modpath(font_api.name)
 dofile(font_api.path.."/font.lua")
 dofile(font_api.path.."/registry.lua")
 dofile(font_api.path.."/fontform.lua")
-
---- 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 = font_api.get_font(meta:get_string("font") ~= ""
-			and meta:get_string("font") or def.font_name)
-
-		local maxlines = def.maxlines or 1 -- TODO:How to do w/o maxlines ?
-
-		objref:set_properties({
-			textures={font:make_text_texture(text,
-				font:get_height(maxlines) * def.size.x / def.size.y
-					/ (def.aspect_ratio or 1),
-				font:get_height(maxlines),
-				def.maxlines, def.halign, def.valign, def.color)},
-			visual_size = def.size
-		})
-	end
+if minetest.get_modpath("display_api") then
+	dofile(font_api.path.."/display_api.lua")
 end
-
--- Compatibility
-font_lib = font_api
+dofile(font_api.path.."/deprecation.lua")

font_api/mod.conf

@@ -0,0 +1,3 @@
+name=font_api
+description=A library for rendernig text on textures
+optional_depends=display_api

font_api/registry.lua

@@ -1,20 +1,19 @@
 --[[
-    font_api mod for Minetest - Library to add font display capability
-    to display_api mod.
-    (c) Pierre-Yves Rollo
+	font_api mod for Minetest - Library creating textures with fonts and text
+	(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 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.
+	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/>.
+	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
@@ -124,9 +123,9 @@ end
 -- @param def font definition. A associative array with following keys :
 -- @key default True (by default) if this font may be used as default font
 -- @key height (mandatory) Height in pixels of all font textures
--- @key widths (mandatory) Array of character widths in pixels, indexed by 
+-- @key widths (mandatory) Array of character widths in pixels, indexed by
 -- UTF codepoints
--- @key margintop (optional) Margin (in texture pixels) added on top of each 
+-- @key margintop (optional) Margin (in texture pixels) added on top of each
 -- char texture.
 -- @key marginbottom (optional) dded at bottom of each char texture.
 -- @key linespacing (optional) Spacing (in texture pixels) between each lines.
@@ -144,19 +143,18 @@ function font_api.register_font(font_name, font_def)
 
 	local font = font_api.Font:new(font_def)
 
-	if font == nil then	
+	if font == nil then
 		minetest.log("error", "Unable to register font \""..font_name.."\".")
 		return
 	end
-	
+
 	font.name = font_name
 	font_api.registered_fonts[font_name] = font
 	font_api.registered_fonts_number = font_api.registered_fonts_number + 1
-	
+
 	-- Force to choose again default font
 	-- (allows use of fonts registered after start)
 	default_font = false
-	
+
 	minetest.log("action", "New font registered in font_api: "..font_name..".")
 end
-

font_metro/CC-BY-SA.txt

@@ -0,0 +1,60 @@
+THE WORK (AS DEFINED BELOW) IS PROVIDED UNDER THE TERMS OF THIS CREATIVE COMMONS PUBLIC LICENSE ("CCPL" OR "LICENSE"). THE WORK IS PROTECTED BY COPYRIGHT AND/OR OTHER APPLICABLE LAW. ANY USE OF THE WORK OTHER THAN AS AUTHORIZED UNDER THIS LICENSE OR COPYRIGHT LAW IS PROHIBITED.
+
+BY EXERCISING ANY RIGHTS TO THE WORK PROVIDED HERE, YOU ACCEPT AND AGREE TO BE BOUND BY THE TERMS OF THIS LICENSE. TO THE EXTENT THIS LICENSE MAY BE CONSIDERED TO BE A CONTRACT, THE LICENSOR GRANTS YOU THE RIGHTS CONTAINED HERE IN CONSIDERATION OF YOUR ACCEPTANCE OF SUCH TERMS AND CONDITIONS.
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font_metro/LGPL.txt

@@ -0,0 +1,458 @@
+GNU LESSER GENERAL PUBLIC LICENSE
+	 Version 2.1, February 1999
+
+Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+
+[This is the first released version of the Lesser GPL.  It also counts
+as the successor of the GNU Library Public License, version 2, hence
+the version number 2.1.]
+
+		  Preamble
+
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+
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+
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font_metro/LICENSE.txt

@@ -1,3 +0,0 @@
-This work is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/3.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.
-
-

font_metro/README.md

@@ -0,0 +1,19 @@
+# Metro font minetest mod for font API
+
+This mod adds Metro font to Font API mod (from [display_modpack](https://github.com/pyrollo/display_modpack)).
+
+For more information, see the [forum topic](https://forum.minetest.net/viewtopic.php?t=13563) at the Minetest forums.
+ 
+This font includes uppercase, lowercase and many accentuated latin letters, greek and cyrillic letters.
+
+![Font Botic Preview](screenshot.png)
+ 
+**Dependancies**: font_api
+
+**License**: code under LGPL v2.1, font under CC-BY-SA 3.0
+
+## Original Font
+
+**Original font**: [Metro by Christian Munk](https://fontstruct.com/fontstructions/show/723864/metro_sans)
+
+**License**: CC-BY-SA

font_metro/mod.conf

@@ -0,0 +1,3 @@
+name=font_metro
+description=Metro font (latin, accents, cyrillic, greek) for font_api
+depends=font_api

ontime_clocks/mod.conf

@@ -0,0 +1,4 @@
+name=ontime_clocks
+description=Clocks displaing real ingame time
+depends=default,dye,display_api
+optional_depends=intllib

ontime_clocks/nodes.lua

@@ -1,5 +1,5 @@
 --[[
-    ontime_clocks mod for Minetest - Clock nodes displaying ingame time 
+    ontime_clocks mod for Minetest - Clock nodes displaying ingame time
     (c) Pierre-Yves Rollo
 
     This file is part of ontime_clocks.
@@ -31,11 +31,11 @@ minetest.register_node("ontime_clocks:green_digital", {
 	node_box = {
 		type = "wallmounted",
 		wall_side = { -0.5, -3/16, -7/16, -13/32, 7/32, 7/16 },
-		wall_bottom = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 },    
-		wall_top = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 } 
+		wall_top = { -7/16, 0.5, -7/32, 7/16, 13/32, 3/16 },
+		wall_bottom = { -7/16, -0.5, -3/16, 7/16, -13/32, 7/32 },
 	},
 	tiles = {"ontime_clocks_digital.png"},
-	groups = {oddly_breakable_by_hand = 1, not_blocking_trains = 1, display_modpack_node = 1},
+	groups = {oddly_breakable_by_hand=1, not_blocking_trains=1, display_api=1},
 	display_entities = {
 		["ontime_clocks:display"] = {
 			depth = 13/32 - 0.01,
@@ -69,11 +69,11 @@ minetest.register_node("ontime_clocks:red_digital", {
 	node_box = {
 		type = "wallmounted",
 		wall_side = { -0.5, -3/16, -7/16, -13/32, 7/32, 7/16 },
-		wall_bottom = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 },    
-		wall_top = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 } 
+		wall_bottom = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 },
+		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_modpack_node = 1},
+	groups = {oddly_breakable_by_hand=1, not_blocking_trains=1, display_api=1},
 	display_entities = {
 		["ontime_clocks:display"] = {
 			depth = 13/32 - 0.01,
@@ -107,12 +107,12 @@ minetest.register_node("ontime_clocks:white", {
 	node_box = {
 		type = "wallmounted",
 		wall_side = { -0.5, -7/16, -7/16, -6/16, 7/16, 7/16},
-		wall_bottom = { -7/16, -0.5, -7/16, 7/16, -7/16, 7/16},    
-		wall_top = { -7/16, 0.5, -7/16, 7/16, 7/16, 7/16},    
+		wall_bottom = { -7/16, -0.5, -7/16, 7/16, -7/16, 7/16},
+		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_modpack_node = 1},
-	display_entities = { 
+	groups = {oddly_breakable_by_hand=1, not_blocking_trains=1, display_api=1},
+	display_entities = {
 		["ontime_clocks:display"] = {
 			depth = 6/16 - 0.01,
 			on_display_update = function(pos, objref)
@@ -144,12 +144,12 @@ minetest.register_node("ontime_clocks:frameless_black", {
 	node_box = {
 		type = "wallmounted",
 		wall_side = { -0.5, -7/16, -7/16, -0.45, 7/16, 7/16 },
-		wall_bottom = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 },    
-		wall_top = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 } 
+		wall_bottom = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 },
+		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_modpack_node = 1},
-	display_entities = { 
+	groups = {oddly_breakable_by_hand=1, not_blocking_trains=1, display_api=1},
+	display_entities = {
 		["ontime_clocks:display"] = {
 			depth = 7/16,
 			on_display_update = function(pos, objref)
@@ -181,12 +181,12 @@ minetest.register_node("ontime_clocks:frameless_gold", {
 	node_box = {
 		type = "wallmounted",
 		wall_side = { -0.5, -7/16, -7/16, -0.45, 7/16, 7/16 },
-		wall_bottom = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 },    
-		wall_top = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 } 
+		wall_bottom = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 },
+		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_modpack_node = 1},
-	display_entities = { 
+	groups = {oddly_breakable_by_hand=1, not_blocking_trains=1, display_api=1},
+	display_entities = {
 		["ontime_clocks:display"] = {
 			depth = 7/16,
 			on_display_update = function(pos, objref)
@@ -218,12 +218,12 @@ minetest.register_node("ontime_clocks:frameless_white", {
 	node_box = {
 		type = "wallmounted",
 		wall_side = { -0.5, -7/16, -7/16, -0.45, 7/16, 7/16 },
-		wall_bottom = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 },    
-		wall_top = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 } 
+		wall_bottom = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 },
+		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_modpack_node = 1},
-	display_entities = { 
+	groups = {oddly_breakable_by_hand=1, not_blocking_trains=1, display_api=1},
+	display_entities = {
 		["ontime_clocks:display"] = {
 			depth = 7/16,
 			on_display_update = function(pos, objref)

signs/common.lua

@@ -21,40 +21,6 @@
 local S = signs.intllib
 local F = function(...) return minetest.formspec_escape(S(...)) end
 
-
---Backwards compatibility functions
-
-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
-
-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
-
-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
-
-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
-
-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
-
-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)

signs/compatibility.lua

@@ -23,7 +23,7 @@
 ------------------------------------
 
 local wallmounted_to_facedir = {
-  [0]=1, -- Should not happend with signs 
+  [0]=1, -- Should not happend with signs
   [1]=1, -- Should not happend with signs
   [2]=1,
   [3]=3,
@@ -84,7 +84,34 @@ minetest.register_lbm({ name = "signs:conpatibility_2",
 	action = compatibility_check_2,
 })
 
+--Backwards compatibility API functions
 
+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
 
+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
 
+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
 
+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
+
+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
+
+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

signs/crafts.lua

@@ -54,7 +54,7 @@ minetest.register_craft({
 })
 
 minetest.register_craft({
-	output = 'signs:label_small',
+	output = 'signs:label_medium',
 	recipe = {
 		{'default:paper', 'default:paper', 'dye:black'},
 	}

signs/depends.txt

@@ -1,5 +1,4 @@
 default
-intllib?
-display_api
-font_api
+dye
 signs_api
+intllib?

signs/mod.conf

@@ -0,0 +1,4 @@
+name=signs
+description=Basic signs and posters with text display using signs_api
+depends=default,dye,signs_api
+optional_depends=intllib

signs/nodes.lua

@@ -23,51 +23,57 @@ local F = function(...) return minetest.formspec_escape(S(...)) end
 
 -- Poster specific formspec
 local function display_poster(pos, node, player)
-	local formspec
 	local meta = minetest.get_meta(pos)
+
 	local def = minetest.registered_nodes[node.name].display_entities["signs:display_text"]
 	local font = font_api.get_font(meta:get_string("font") or def.font_name)
 
-	-- Title texture
-	local titletexture = font:make_text_texture(
-		meta:get_string("display_text"), font:get_height()*8.4, font:get_height(), 1, "center")
+	local fs
+	local fname = string.format("%s@%s:display",
+		node.name, minetest.pos_to_string(pos))
 
-	formspec =
-		"size[7,9]"..
-		"background[0,0;7,9;signs_poster_formspec.png]"..
-		"image[0,-0.2;8.4,2;"..titletexture.."]"..
-		"textarea[0.3,1.5;7,8;;"..minetest.colorize("#111", minetest.formspec_escape(meta:get_string("text")))..";]"..
-		"bgcolor[#0000]"
+	-- Title texture
+	local titletexture = font:render(meta:get_string("display_text"),
+		font:get_height()*8.4, font:get_height(), { lines = 1 })
+
+	fs = string.format([=[
+		size[7,9]bgcolor[#0000]
+		background[0,0;7,9;signs_poster_formspec.png]
+		image[0,-0.2;8.4,2;%s]
+		textarea[0.3,1.5;7,8;;%s;]]=],
+		titletexture,
+		minetest.colorize("#111",
+			minetest.formspec_escape(meta:get_string("text"))))
 
 	if minetest.is_protected(pos, player:get_player_name()) then
-		formspec = formspec..
-			"button_exit[2.5,8;2,1;ok;"..F("Close").."]"
+		fs = string.format("%sbutton_exit[2.5,8;2,1;ok;%s]", fs, F("Close"))
 	else
-		formspec = formspec..
-			"button[1,8;2,1;edit;"..F("Edit").."]"..
-			"button_exit[4,8;2,1;ok;"..F("Close").."]"
+		fs = string.format(
+			"%sbutton[1,8;2,1;edit;%s]button_exit[4,8;2,1;ok;%s]",
+			fs, F("Edit"), F("Close"))
 	end
-	minetest.show_formspec(player:get_player_name(),
-		node.name.."@"..minetest.pos_to_string(pos)..":display",
-		formspec)
+	minetest.show_formspec(player:get_player_name(), fname, fs)
 end
 
 local function edit_poster(pos, node, player)
-	local formspec
 	local meta = minetest.get_meta(pos)
 
+	local fs
+	local fname = string.format("%s@%s:edit",
+		node.name, minetest.pos_to_string(pos))
+
 	if not minetest.is_protected(pos, player:get_player_name()) then
-		formspec =
-			"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")).."]"..
-			"textarea[0.5,1.7;6,6;text;"..F("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",
-			formspec)
+		fs = string.format([=[
+			size[6.5,7.5]%s%s%s
+			field[0.5,0.7;6,1;display_text;%s;%s]
+			textarea[0.5,1.7;6,6;text;%s;%s]
+			button[1.25,7;2,1;font;%s]
+			button_exit[3.25,7;2,1;write;%s]]=],
+			default.gui_bg, default.gui_bg_img, default.gui_slots, F("Title"),
+			minetest.formspec_escape(meta:get_string("display_text")),
+			F("Text"), minetest.formspec_escape(meta:get_string("text")),
+			F("Title font"), F("Write"))
+		minetest.show_formspec(player:get_player_name(), fname, fs)
 	end
 end
 
@@ -80,15 +86,29 @@ local function on_receive_fields_poster(pos, formname, fields, player)
 		if formname == node.name.."@"..minetest.pos_to_string(pos)..":display"
 		   and fields.edit then
 			edit_poster(pos, node, player)
+			return true
 		end
 		if formname == node.name.."@"..minetest.pos_to_string(pos)..":edit"
-		   and (fields.write or fields.key_enter) then
-			meta:set_string("display_text", fields.display_text)
-			meta:set_string("text", fields.text)
-			meta:set_string("infotext", "\""..fields.display_text
-					.."\"\n"..S("(right-click to read more text)"))
-			display_api.update_entities(pos)
-			display_poster(pos, node, player)
+		then
+			if (fields.write or fields.font or fields.key_enter) then
+				meta:set_string("display_text", fields.display_text)
+				meta:set_string("text", fields.text)
+				meta:set_string("infotext", "\""..fields.display_text
+						.."\"\n"..S("(right-click to read more text)"))
+				display_api.update_entities(pos)
+			end
+			if (fields.write or fields.key_enter) then
+				display_poster(pos, node, player)
+			elseif (fields.font) then
+				font_api.show_font_list(player, pos, function (playername, pos)
+						local player = minetest.get_player_by_name(playername)
+						local node = minetest.get_node(pos)
+						if player and node then
+							edit_poster(pos, node, player)
+						end
+					end)
+			end
+			return true
 		end
 	end
 end

signs/svg/poster.svg

@@ -75,15 +75,15 @@
      inkscape:pageshadow="2"
      inkscape:zoom="22.395604"
      inkscape:cx="15.573035"
-     inkscape:cy="16.977299"
+     inkscape:cy="16.910322"
      inkscape:current-layer="layer2"
      showgrid="true"
      inkscape:grid-bbox="true"
      inkscape:document-units="px"
-     inkscape:window-width="785"
-     inkscape:window-height="447"
-     inkscape:window-x="2459"
-     inkscape:window-y="340"
+     inkscape:window-width="1441"
+     inkscape:window-height="1038"
+     inkscape:window-x="2012"
+     inkscape:window-y="467"
      inkscape:window-maximized="0"
      showguides="true"
      inkscape:guide-bbox="true"
@@ -197,7 +197,7 @@
      inkscape:groupmode="layer"
      id="layer2"
      inkscape:label="Label frame"
-     style="display:inline">
+     style="display:none">
     <rect
        style="color:#000000;clip-rule:nonzero;display:inline;overflow:visible;visibility:visible;opacity:1;isolation:auto;mix-blend-mode:normal;color-interpolation:sRGB;color-interpolation-filters:linearRGB;solid-color:#000000;solid-opacity:1;fill:#ff41c1;fill-opacity:0.41711228;fill-rule:nonzero;stroke:none;stroke-width:0.1;stroke-linecap:butt;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1;marker:none;color-rendering:auto;image-rendering:auto;shape-rendering:auto;text-rendering:auto;enable-background:accumulate"
        id="rect4585"
@@ -205,7 +205,10 @@
        height="16"
        x="8"
        y="8"
-       ry="0" />
+       ry="0"
+       inkscape:export-filename="/home/pyrollo/dev/minetest-mods/display_modpack/signs/textures/signs_label.png"
+       inkscape:export-xdpi="90"
+       inkscape:export-ydpi="90" />
     <rect
        style="color:#000000;clip-rule:nonzero;display:inline;overflow:visible;visibility:visible;opacity:1;isolation:auto;mix-blend-mode:normal;color-interpolation:sRGB;color-interpolation-filters:linearRGB;solid-color:#000000;solid-opacity:1;fill:#ff41c1;fill-opacity:0.41711228;fill-rule:nonzero;stroke:none;stroke-width:0.1;stroke-linecap:butt;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1;marker:none;color-rendering:auto;image-rendering:auto;shape-rendering:auto;text-rendering:auto;enable-background:accumulate"
        id="rect4585-3"

signs_api/README.md

@@ -27,3 +27,7 @@ Handles screwdriver rotation. Direction is affected for direction signs.
 
 ### `signs_api.register_sign(mod, name, model)`
 A method to quickly register signs.
+
+## Changelog
+### 2019-03-14
+- __sign_api__: Screwdriver behavior changed. Now, left click rotates and changes direction.

signs_api/init.lua

@@ -47,7 +47,7 @@ function signs_api.set_formspec(pos)
 	if ndef and ndef.display_entities
 	   and ndef.display_entities["signs:display_text"] then
 		local maxlines = ndef.display_entities["signs:display_text"].maxlines
-		local fs, x, y
+		local fs, y
 
 		if maxlines == 1 then
 			fs = "field[0.5,0.7;5.5,1;display_text;"..F("Text")..
@@ -64,17 +64,8 @@ function signs_api.set_formspec(pos)
 			y = 2.4
 		end
 
-		x = 0.2
-		fs = fs.."image_button["..x..","..y..";0.5,0.5;font_api_font.png;font;]"
-		x = x + 0.4
-		fs = fs.."image_button["..x..","..y..";0.5,0.5;font_api_left.png;left;]"
-		x = x + 0.4
-		fs = fs.."image_button["..x..","..y..";0.5,0.5;font_api_center.png;center;]"
-		x = x + 0.4
-		fs = fs.."image_button["..x..","..y..";0.5,0.5;font_api_right.png;right;]"
-		y = y + 0.7
-		fs = fs.."button_exit[2,"..y..";2,1;ok;"..
-			F("Write").."]"
+		fs = fs.."button[1,"..y..";2,1;font;"..F("Font").."]"
+		fs = fs.."button_exit[3,"..y..";2,1;ok;"..F("Write").."]"
 		y = y + 0.8
 		fs = "size[6,"..y.."]"..default.gui_bg..
 			default.gui_bg_img..default.gui_slots..fs
@@ -90,7 +81,7 @@ function signs_api.on_receive_fields(pos, formname, fields, player)
 		end
 		if fields and (fields.font) then
 			signs_api.set_display_text(pos, fields.display_text)
-			font_api.show_font_list_from_pos(player, pos)
+			font_api.show_font_list(player, pos)
 		end
 	end
 end
@@ -100,37 +91,42 @@ end
 function signs_api.on_place_direction(itemstack, placer, pointed_thing)
 	local name = itemstack:get_name()
 	local ndef = minetest.registered_nodes[name]
+	local restriction = display_api.is_rotation_restricted()
+
+	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 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
+		-- If legacy mode, only accept upright nodes
+		if restriction and 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)
+			-- Wall pointed or no rotation restriction
+			ndir = minetest.dir_to_facedir(bdir, not restriction)
 		end
 
-		test = {[0]=-pdir.x, pdir.z, pdir.x, -pdir.z}
-    end
+		test = { [0]=-pdir.x, pdir.z, pdir.x, -pdir.z, -pdir.x, [8]=pdir.x }
+	end
 
 	if ndef.paramtype2 == "wallmounted" then
 		ndir = minetest.dir_to_wallmounted(bdir)
-		if ndir == 0 or ndir == 1 then
-			-- Ceiling or floor
+		-- If legacy mode, only accept upright nodes
+		if restriction and (ndir == 0 or ndir == 1) then
 			ndir = minetest.dir_to_wallmounted({x=pdir.x, y=0, z=pdir.z})
 		end
 
-		test = {0, pdir.z, -pdir.z, -pdir.x, pdir.x}
+		test = { [0]=-pdir.x, -pdir.x, pdir.z, -pdir.z, -pdir.x, pdir.x}
 	end
 
 	-- Only for direction signs
+	-- TODO:Maybe improve ground and ceiling placement in every directions
 	if ndef.signs_other_dir then
 		if test[ndir] > 0 then
 			itemstack:set_name(ndef.signs_other_dir)
@@ -144,20 +140,48 @@ function signs_api.on_place_direction(itemstack, placer, pointed_thing)
 	end
 end
 
--- Handles screwdriver rotation. Direction is affected for direction signs
--- If rotation mode is 2 and sign is directional, swap direction.
--- Otherwise use display_api's on_rotate function.
-function signs_api.on_rotate(pos, node, player, mode, new_param2)
-	if mode == 2 then
+-- Handles screwdriver rotation
+-- (see "if" block below for rotation restriction mode).
+signs_api.on_rotate = function(pos, node, player, mode, new_param2)
+	-- If rotation mode is 1 and sign is directional, swap direction between
+	-- each rotation.
+	if mode == 1 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})
+			-- Switch direction
+			node = {name = ndef.signs_other_dir,
+				param1 = node.param1, param2 = node.param2}
+			minetest.swap_node(pos, node)
 			display_api.update_entities(pos)
-			return true
+			-- Rotate only if not "main" sign
+			-- TODO:Improve detection of "main" direction sign
+			if ndef.groups and ndef.groups.not_in_creative_inventory then
+				return display_api.on_rotate(pos, node, player, mode, new_param2)
+			else
+				return true
+			end
 		end
 	end
-	return display_api.on_rotate(pos, node, user, mode, new_param2)
+	return display_api.on_rotate(pos, node, player, mode, new_param2)
+end
+
+-- Legacy mode with rotation restriction
+-- TODO:When MT < 5.0 no more in use, to be removed
+if display_api.is_rotation_restricted() then
+	signs_api.on_rotate = function(pos, node, player, mode, new_param2)
+		-- If rotation mode is 2 and sign is directional, swap direction.
+		-- Otherwise use display_api's on_rotate function.
+		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)
+				return true
+			end
+		end
+		return display_api.on_rotate(pos, node, player, mode, new_param2)
+	end
 end
 
 function signs_api.register_sign(mod, name, model)
@@ -172,7 +196,7 @@ function signs_api.register_sign(mod, name, model)
 			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},
+		groups = {choppy=2, dig_immediate=2, not_blocking_trains=1, display_api=1},
 		sounds = default.node_sound_defaults(),
 		display_entities = {
 			["signs:display_text"] = {

signs_api/mod.conf

@@ -0,0 +1,4 @@
+name=signs_api
+description=A library providing various helper functions for registereing signs with text display
+depends=default,display_api,font_api
+optional_depends=intllib

signs_road/compatibility.lua

@@ -22,7 +22,7 @@
 ------------------------------------
 
 local wallmounted_to_facedir = {
-  [0]=1, -- Should not happend with signs 
+  [0]=1, -- Should not happend with signs
   [1]=1, -- Should not happend with signs
   [2]=1,
   [3]=3,
@@ -82,4 +82,9 @@ minetest.register_lbm({ name = "signs_road:conpatibility_2",
 	action = compatibility_check_2,
 })
 
+-- Node name tidy up
+--------------------
 
+minetest.register_alias("signs_road:green_street_sign", "signs_road:green_sign")
+minetest.register_alias("signs_road:yellow_street_sign", "signs_road:yellow_sign")
+minetest.register_alias("signs_road:white_street_sign", "signs_road:white_sign")

signs_road/crafts.lua

@@ -19,26 +19,10 @@
     along with signs_road.  If not, see <http://www.gnu.org/licenses/>.
 --]]
 
-minetest.register_craft({
-	output = 'signs_road:blue_street_sign 2',
-	recipe = {
-		{'dye:blue', 'dye:white', ''},
-		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
-		{'', '', ''},
-	}
-})
+-- Standard rectangle signs
 
 minetest.register_craft({
-	output = 'signs_road:red_street_sign 2',
-	recipe = {
-		{'dye:white', 'dye:red', ''},
-		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
-		{'', '', ''},
-	}
-})
-
-minetest.register_craft({
-	output = 'signs_road:white_street_sign 2',
+	output = 'signs_road:white_sign 2',
 	recipe = {
 		{'dye:white', 'dye:black', ''},
 		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
@@ -47,13 +31,16 @@ minetest.register_craft({
 })
 
 minetest.register_craft({
-      type = "shapeless",
-      output = 'signs_road:large_street_sign',
-      recipe = {'signs_road:white_street_sign', 'signs_road:white_street_sign', 'signs_road:white_street_sign', 'signs_road:white_street_sign'},
+	output = 'signs_road:blue_sign 2',
+	recipe = {
+		{'dye:blue', 'dye:white', ''},
+		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
+		{'', '', ''},
+	}
 })
 
 minetest.register_craft({
-	output = 'signs_road:green_street_sign 2',
+	output = 'signs_road:green_sign 2',
 	recipe = {
 		{'dye:green', 'dye:white', ''},
 		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
@@ -62,7 +49,7 @@ minetest.register_craft({
 })
 
 minetest.register_craft({
-	output = 'signs_road:yellow_street_sign 2',
+	output = 'signs_road:yellow_sign 2',
 	recipe = {
 		{'dye:yellow', 'dye:black', ''},
 		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
@@ -70,6 +57,16 @@ minetest.register_craft({
 	}
 })
 
+minetest.register_craft({
+	output = 'signs_road:red_sign 2',
+	recipe = {
+		{'dye:red', 'dye:white', ''},
+		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
+		{'', '', ''},
+	}
+})
+
+-- Standard direction signs
 
 minetest.register_craft({
 	output = 'signs_road:black_right_sign 2',
@@ -80,6 +77,24 @@ minetest.register_craft({
 	}
 })
 
+minetest.register_craft({
+	output = 'signs_road:white_right_sign 2',
+	recipe = {
+		{'dye:white', 'dye:black', 'default:steel_ingot'},
+		{'default:steel_ingot', 'default:steel_ingot', ''},
+		{'', '', ''},
+	}
+})
+
+minetest.register_craft({
+	output = 'signs_road:blue_right_sign 2',
+	recipe = {
+		{'dye:blue', 'dye:white', 'default:steel_ingot'},
+		{'default:steel_ingot', 'default:steel_ingot', ''},
+		{'', '', ''},
+	}
+})
+
 minetest.register_craft({
 	output = 'signs_road:green_right_sign 2',
 	recipe = {
@@ -92,18 +107,95 @@ minetest.register_craft({
 minetest.register_craft({
 	output = 'signs_road:yellow_right_sign 2',
 	recipe = {
-		{'dye:yellow', 'dye:white', 'default:steel_ingot'},
+		{'dye:yellow', 'dye:black', 'default:steel_ingot'},
 		{'default:steel_ingot', 'default:steel_ingot', ''},
 		{'', '', ''},
 	}
 })
 
 minetest.register_craft({
-	output = 'signs_road:white_right_sign 2',
+	output = 'signs_road:red_right_sign 2',
 	recipe = {
-		{'dye:white', 'dye:black', 'default:steel_ingot'},
+		{'dye:red', 'dye:white', 'default:steel_ingot'},
 		{'default:steel_ingot', 'default:steel_ingot', ''},
 		{'', '', ''},
 	}
 })
 
+-- Transform Rectangle <-> Direction
+
+minetest.register_craft({
+	type = 'shapeless', output = 'signs_road:white_right_sign',
+	recipe = {'signs_road:white_sign'},
+})
+
+minetest.register_craft({
+	type = 'shapeless', output = 'signs_road:white_sign',
+	recipe = {'signs_road:white_right_sign'},
+})
+
+minetest.register_craft({
+	type = 'shapeless', output = 'signs_road:blue_right_sign',
+	recipe = {'signs_road:blue_sign'},
+})
+
+minetest.register_craft({
+	type = 'shapeless', output = 'signs_road:blue_sign',
+	recipe = {'signs_road:blue_right_sign'},
+})
+
+minetest.register_craft({
+	type = 'shapeless', output = 'signs_road:green_right_sign',
+	recipe = {'signs_road:green_sign'},
+})
+
+minetest.register_craft({
+	type = 'shapeless', output = 'signs_road:green_sign',
+	recipe = {'signs_road:green_right_sign'},
+})
+
+minetest.register_craft({
+	type = 'shapeless', output = 'signs_road:yellow_right_sign',
+	recipe = {'signs_road:yellow_sign'},
+})
+
+minetest.register_craft({
+	type = 'shapeless', output = 'signs_road:yellow_sign',
+	recipe = {'signs_road:yellow_right_sign'},
+})
+
+minetest.register_craft({
+	type = 'shapeless', output = 'signs_road:red_right_sign',
+	recipe = {'signs_road:red_sign'},
+})
+
+minetest.register_craft({
+	type = 'shapeless', output = 'signs_road:red_sign',
+	recipe = {'signs_road:red_right_sign'},
+})
+
+-- Various signs
+
+minetest.register_craft({
+	output = 'signs_road:blue_street_sign 4',
+	recipe = {
+		{'dye:blue', 'dye:white', 'dye:blue'},
+		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
+		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
+	}
+})
+
+minetest.register_craft({
+	output = 'signs_road:red_street_sign 2',
+	recipe = {
+		{'dye:white', 'dye:red', 'dye:black'},
+		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
+		{'', '', ''},
+	}
+})
+
+minetest.register_craft({
+      type = "shapeless",
+      output = 'signs_road:large_street_sign',
+      recipe = {'signs_road:white_street_sign', 'signs_road:white_street_sign', 'signs_road:white_street_sign', 'signs_road:white_street_sign'},
+})

signs_road/depends.txt

@@ -1,6 +1,4 @@
 default
 intllib?
 dye
-display_api
-font_api
 signs_api

signs_road/mod.conf

@@ -0,0 +1,4 @@
+name=signs_road
+description=Various road signs with text display using signs_api
+depends=default,dye,signs_api
+optional_depends=intllib

signs_road/nodes.lua

@@ -33,10 +33,10 @@ local models = {
 		},
 		node_fields = {
 			description = S("Blue street sign"),
-			tiles = { "signs_road_sides.png", "signs_road_sides.png", 
-			          "signs_road_sides.png", "signs_road_sides.png", 
-			          "signs_road_sides.png", "signs_road_blue.png" },
-			inventory_image = "signs_road_blue.png",
+			tiles = { "signs_road_sides.png", "signs_road_sides.png",
+			          "signs_road_sides.png", "signs_road_sides.png",
+			          "signs_road_sides.png", "signs_road_blue_street.png" },
+			inventory_image = "signs_road_blue_street.png",
 		},
 	},
 	large_street_sign = {
@@ -50,8 +50,8 @@ local models = {
 		node_fields = {
 		   visual_scale = 1,
 			description = S("Large banner"),
-			tiles = { "signs_road_sides.png", "signs_road_sides.png", 
-			          "signs_road_sides.png", "signs_road_sides.png", 
+			tiles = { "signs_road_sides.png", "signs_road_sides.png",
+			          "signs_road_sides.png", "signs_road_sides.png",
 			          "signs_road_sides.png", "signs_road_large_white.png" },
 			inventory_image = "signs_road_white.png",
 		},
@@ -67,13 +67,13 @@ local models = {
 		},
 		node_fields = {
 			description = S("Red and white town sign"),
-			tiles = { "signs_road_sides.png", "signs_road_sides.png", 
-			          "signs_road_sides.png", "signs_road_sides.png", 
+			tiles = { "signs_road_sides.png", "signs_road_sides.png",
+			          "signs_road_sides.png", "signs_road_sides.png",
 			          "signs_road_sides.png", "signs_road_red_white.png" },
 			inventory_image="signs_road_red_white.png",
 		},
 	},
-	white_street_sign = {
+	white_sign = {
 		depth = 1/16,
 		width = 1,
 		height = 7/16,
@@ -84,13 +84,13 @@ local models = {
 		},
 		node_fields = {
 			description = S("White street sign"),
-			tiles = { "signs_road_sides.png", "signs_road_sides.png", 
-			          "signs_road_sides.png", "signs_road_sides.png", 
+			tiles = { "signs_road_sides.png", "signs_road_sides.png",
+			          "signs_road_sides.png", "signs_road_sides.png",
 			          "signs_road_sides.png", "signs_road_white.png" },
 			inventory_image = "signs_road_white.png",
 		},
 	},
-	green_street_sign = {
+	blue_sign = {
 		depth = 1/16,
 		width = 1,
 		height = 7/16,
@@ -100,14 +100,31 @@ local models = {
 			color = "#fff",
 		},
 		node_fields = {
-			description = S("Green street sign"),
-			tiles = { "signs_road_sides.png", "signs_road_sides.png", 
-			          "signs_road_sides.png", "signs_road_sides.png", 
+			description = S("Blue road sign"),
+			tiles = { "signs_road_sides.png", "signs_road_sides.png",
+			          "signs_road_sides.png", "signs_road_sides.png",
+			          "signs_road_sides.png", "signs_road_blue.png" },
+			inventory_image = "signs_road_blue.png",
+		},
+	},
+	green_sign = {
+		depth = 1/16,
+		width = 1,
+		height = 7/16,
+		entity_fields = {
+			size = { x = 1, y = 6/16 },
+			maxlines = 2,
+			color = "#fff",
+		},
+		node_fields = {
+			description = S("Green road sign"),
+			tiles = { "signs_road_sides.png", "signs_road_sides.png",
+			          "signs_road_sides.png", "signs_road_sides.png",
 			          "signs_road_sides.png", "signs_road_green.png" },
 			inventory_image = "signs_road_green.png",
 		},
 	},
-	yellow_street_sign = {
+	yellow_sign = {
 		depth = 1/16,
 		width = 1,
 		height = 7/16,
@@ -117,13 +134,30 @@ local models = {
 			color = "#000",
 		},
 		node_fields = {
-			description = S("Yellow street sign"),
-			tiles = { "signs_road_sides.png", "signs_road_sides.png", 
-			          "signs_road_sides.png", "signs_road_sides.png", 
+			description = S("Yellow road sign"),
+			tiles = { "signs_road_sides.png", "signs_road_sides.png",
+			          "signs_road_sides.png", "signs_road_sides.png",
 			          "signs_road_sides.png", "signs_road_yellow.png" },
 			inventory_image="signs_road_yellow.png",
 		},
 	},
+	red_sign = {
+		depth = 1/16,
+		width = 1,
+		height = 7/16,
+		entity_fields = {
+			size = { x = 1, y = 6/16 },
+			maxlines = 2,
+			color = "#fff",
+		},
+		node_fields = {
+			description = S("Red road sign"),
+			tiles = { "signs_road_sides.png", "signs_road_sides.png",
+			          "signs_road_sides.png", "signs_road_sides.png",
+			          "signs_road_sides.png", "signs_road_red.png" },
+			inventory_image = "signs_road_red.png",
+		},
+	},
 	black_right_sign = {
 		depth = 1/32,
 		width = 1,
@@ -136,8 +170,8 @@ local models = {
 		},
 		node_fields = {
 			description = S("Black direction sign"),
-			tiles = { "signs_road_sides.png", "signs_road_sides.png", 
-			          "signs_road_sides.png", "signs_road_sides.png", 
+			tiles = { "signs_road_sides.png", "signs_road_sides.png",
+			          "signs_road_sides.png", "signs_road_sides.png",
 			          "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",
@@ -157,8 +191,8 @@ local models = {
 		},
 		node_fields = {
 			description = S("Black direction sign"),
-			tiles = { "signs_road_sides.png", "signs_road_sides.png", 
-			          "signs_road_sides.png", "signs_road_sides.png", 
+			tiles = { "signs_road_sides.png", "signs_road_sides.png",
+			          "signs_road_sides.png", "signs_road_sides.png",
 			          "signs_road_sides.png", "signs_road_black_dir_left.png" },
 			inventory_image = "signs_road_black_dir_inventory.png",
 			signs_other_dir = "signs_road:black_right_sign",
@@ -168,7 +202,102 @@ local models = {
 			on_rightclick = signs_api.on_right_click_direction,
 		},
 	},
-
+	white_right_sign = {
+		depth = 1/16,
+		width = 14/16,
+		height = 7/16,
+		entity_fields = {
+			right = -3/32,
+			size = { x = 12/16, y = 6/16 },
+			maxlines = 2,
+			color = "#000",
+		},
+		node_fields = {
+			description = S("White direction sign"),
+			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_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 } },
+			collision_box = { type = "fixed", fixed = { -0.5, -7/32, 0.5, 7/16, 7/32, 7/16 } },
+		},
+	},
+	white_left_sign = {
+		depth = 1/16,
+		width = 14/16,
+		height = 7/16,
+		entity_fields = {
+			right = 3/32,
+			size = { x = 12/16, y = 6/16 },
+			maxlines = 2,
+			color = "#000",
+		},
+		node_fields = {
+			description = S("White direction sign"),
+			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_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 } },
+			collision_box = { type = "fixed", fixed = { -7/16, -7/32, 0.5, 0.5, 7/32, 7/16 } },
+			groups = { not_in_creative_inventory = 1 },
+			drop = "signs_road:white_right_sign",
+		},
+	},
+	blue_right_sign = {
+		depth = 1/16,
+		width = 14/16,
+		height = 7/16,
+		entity_fields = {
+			right = -3/32,
+			size = { x = 12/16, y = 6/16 },
+			maxlines = 2,
+			color = "#fff",
+		},
+		node_fields = {
+			description = S("Blue direction sign"),
+			tiles = { "signs_road_blue_direction.png" },
+			inventory_image = "signs_road_blue_dir_inventory.png",
+			signs_other_dir = "signs_road:blue_left_sign",
+			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 } },
+			collision_box = { type = "fixed", fixed = { -0.5, -7/32, 0.5, 7/16, 7/32, 7/16 } },
+		},
+	},
+	blue_left_sign = {
+		depth = 1/16,
+		width = 14/16,
+		height = 7/16,
+		entity_fields = {
+			right = 3/32,
+			size = { x = 12/16, y = 6/16 },
+			maxlines = 2,
+			color="#fff",
+		},
+		node_fields = {
+			description = S("Blue direction sign"),
+			tiles = { "signs_road_blue_direction.png" },
+			inventory_image = "signs_road_blue_dir_inventory.png",
+			signs_other_dir = "signs_road:blue_right_sign",
+			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 } },
+			collision_box = { type = "fixed", fixed = { -7/16, -7/32, 0.5, 0.5, 7/32, 7/16 } },
+			groups = { not_in_creative_inventory = 1 },
+			drop = "signs_road:blue_right_sign",
+		},
+	},
 	green_right_sign = {
 		depth = 1/16,
 		width = 14/16,
@@ -265,7 +394,7 @@ local models = {
 			drop = "signs_road:yellow_right_sign",
 		},
 	},
-	white_right_sign = {
+	red_right_sign = {
 		depth = 1/16,
 		width = 14/16,
 		height = 7/16,
@@ -273,13 +402,13 @@ local models = {
 			right = -3/32,
 			size = { x = 12/16, y = 6/16 },
 			maxlines = 2,
-			color = "#000",
+			color = "#fff",
 		},
 		node_fields = {
-			description = S("White direction sign"),
-			tiles = { "signs_road_white_direction.png" },
-			inventory_image = "signs_road_white_dir_inventory.png",
-			signs_other_dir = "signs_road:white_left_sign",
+			description = S("Red direction sign"),
+			tiles = { "signs_road_red_direction.png" },
+			inventory_image = "signs_road_red_dir_inventory.png",
+			signs_other_dir = "signs_road:red_left_sign",
 			on_place = signs_api.on_place_direction,
 			on_rightclick = signs_api.on_right_click_direction,
 			drawtype = "mesh",
@@ -288,7 +417,7 @@ local models = {
 			collision_box = { type = "fixed", fixed = { -0.5, -7/32, 0.5, 7/16, 7/32, 7/16 } },
 		},
 	},
-	white_left_sign = {
+	red_left_sign = {
 		depth = 1/16,
 		width = 14/16,
 		height = 7/16,
@@ -296,21 +425,21 @@ local models = {
 			right = 3/32,
 			size = { x = 12/16, y = 6/16 },
 			maxlines = 2,
-			color = "#000",
+			color = "#fff",
 		},
 		node_fields = {
-			description = S("White direction sign"),
-			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_api.on_place_direction,
+			description = S("Red direction sign"),
+			tiles = { "signs_road_red_direction.png" },
+			inventory_image = "signs_road_red_dir_inventory.png",
+			signs_other_dir = "signs_road:red_right_sign",
+			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 } },
 			collision_box = { type = "fixed", fixed = { -7/16, -7/32, 0.5, 0.5, 7/32, 7/16 } },
 			groups = { not_in_creative_inventory = 1 },
-			drop = "signs_road:white_right_sign",
+			drop = "signs_road:red_right_sign",
 		},
 	},
 }
@@ -320,5 +449,3 @@ for name, model in pairs(models)
 do
 	signs_api.register_sign("signs_road", name, model)
 end
-
-

signs_road/svg/green_street.svg

@@ -1,108 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!-- Created with Inkscape (http://www.inkscape.org/) -->
-
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   width="32px"
-   height="32px"
-   id="svg2985"
-   version="1.1"
-   inkscape:version="0.91 r13725"
-   sodipodi:docname="green_street.svg"
-   inkscape:export-filename="/home/pyrollo/dev/minetest-mods/signs/textures/signs_green_street.png"
-   inkscape:export-xdpi="90"
-   inkscape:export-ydpi="90">
-  <defs
-     id="defs2987" />
-  <sodipodi:namedview
-     id="base"
-     pagecolor="#d2d038"
-     bordercolor="#666666"
-     borderopacity="1.0"
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-     inkscape:pageshadow="2"
-     inkscape:zoom="15.836083"
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-     showgrid="true"
-     inkscape:grid-bbox="true"
-     inkscape:document-units="px"
-     inkscape:window-width="1325"
-     inkscape:window-height="744"
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-     inkscape:window-y="24"
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-       spacingy="0.5px"
-       color="#ff0000"
-       opacity="0.1254902" />
-  </sodipodi:namedview>
-  <metadata
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-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
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-       inkscape:export-filename="/home/pyrollo/dev/minetest-mods/display_modpack/signs_road/textures/signs_road_green_inventory.png"
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-     inkscape:groupmode="layer"
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signs_road/svg/signs_green_direction.svg

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-</svg>

steles/mod.conf

@@ -0,0 +1,4 @@
+name=steles
+description=Stone steles with text display on them
+depends=default,display_api,font_api
+optional_depends=intllib,technic

steles/nodes.lua

@@ -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_modpack_node = 1
+		groups.display_api = 1
 
 		minetest.register_node("steles:"..parts[2].."_stele", {
 			description = steles.materials_desc[i],
@@ -50,7 +50,7 @@ for i, material in ipairs(steles.materials) do
 			display_entities = {
 				["steles:text"] = {
 						on_display_update = font_api.on_display_update,
-						depth = -2/16 - display_api.entity_spacing, 
+						depth = -2/16 - display_api.entity_spacing,
 						top = -2/16,
 						aspect_ratio = 0.4,
 						size = { x = 10/16, y = 12/16 },
@@ -63,12 +63,14 @@ for i, material in ipairs(steles.materials) do
 				end,
 			on_construct = 	function(pos)
 					local meta = minetest.get_meta(pos)
-					meta:set_string("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("Displayed text (3 lines max)")
-						..";${display_text}]"
-						.."button_exit[2,3;2,1;ok;"..F("Write").."]")
+					meta:set_string("formspec", string.format([=[
+						size[6,4]%s%s%s
+						textarea[0.5,0.7;5.5,2;display_text;%s;${display_text}]
+						button[1,3;2,1;font;%s]
+						button_exit[3,3;2,1;ok;%s]]=],
+						default.gui_bg, default.gui_bg_img, default.gui_slots,
+						F("Displayed text (3 lines max)"),
+						F("Font"), F("Write")))
 					display_api.on_construct(pos)
 				end,
 			on_destruct = display_api.on_destruct,
@@ -76,15 +78,17 @@ for i, material in ipairs(steles.materials) do
 			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
+						if fields.ok or fields.font then
 							meta:set_string("display_text", fields.display_text)
 							meta:set_string("infotext", "\""..fields.display_text.."\"")
 							display_api.update_entities(pos)
 						end
+						if fields.font then
+							font_api.show_font_list(player, pos)
+						end
 					end
 				end,
 			on_punch = display_api.update_entities,
 		})
 	end
 end
-