Añadido soporte para diferentes tipos de signs.

-- Yawin

mods/display_modpack-master/.directory

@@ -0,0 +1,3 @@
+[Dolphin]
+Timestamp=2017,1,18,0,41,1
+Version=3

mods/display_modpack-master/README.md

@@ -0,0 +1,10 @@
+# Display Modpack
+
+This modpack provides mods with dynamic display. Mods are :
+
+- **display_lib**: A library for adding display entities to nodes;
+- **font_lib**: A library for displaying fonts on entities;
+- **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;

mods/display_modpack-master/display_lib/API.md

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+# Display Lib API
+This document describes Display Lib API. Display Lib allows to add a dynamic display on a node. Display Lib limits node rotations. For wallmounted, only vertical positionning is available, and for facedir, only first four position are availabel (those with default axis).
+
+## Provided methods
+### update\_entities
+**display\_lib.update\_entities(pos)**
+
+This method triggers entities update for the display node at pos. Actual entity update is made by **on\_display\_update** callback associated to the entity.
+
+**pos**: Position of the node
+### register\_display\_entity
+**display\_lib.register\_display\_entity(entity_name)**
+
+This is a helper to register entities used for display. 
+
+**entity_name**: Name of the entity to register.
+## Provided callback implementations
+### on_place
+**display\_lib.on\_place(itemstack, placer, pointed\_thing)**
+
+**On_place** node callback implementation. Display nodes should have this callback (avoid placement of horizontal display node).
+### on_construct
+**display\_lib.on\_construct(pos)**
+
+**On_construct** node callback implementation. Display nodes should have this callback (creates, places and updates display entities on node construction).
+### on_destruct
+**display\_lib.on_destruct(pos)**
+
+**On_destruct** node callback implementation. Display nodes should have this callback (removes display entities on node destruction). 
+### on_rotate
+**display\_lib.on\_rotate(pos, node, user, mode, new_param2)**
+
+**On_rotate** node callback implementation. Display nodes should have this callback (restricts rotations and rotates display entities associated with node).
+### on_activate
+**display\_lib.on_activate(entity, staticdata)**
+
+**On_activate** entity callback implementation for display entities. No need of this method if display entities have been registered using **register\_display\_entity** (callback is already set). 
+## Howto register a display node
+* Register display entities with **register\_display\_entity**
+* Register node with :
+	- **on\_place**, **on\_construct**, **on\_destruct** and **on\_rotate** callbacks using **display\_lib** callbacks.
+	- 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
+**depth**, **right** and **height** : Entity position regarding to node facedir/wallmounted main axis. Values for these fields can be any number between -0.5 and 0.5 (default value is 0). Position 0,0,0 is the center of the node. **depth** goes from front (-0.5) to rear (0.5), **height** goes from bottom (-0.5) to top (0.5) and **height** 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.
+
+### Example
+
+		display_lib.register_display_entity("mymod:entity1")
+		display_lib.register_display_entity("mymod:entity2")
+
+		function my_display_update1(pos, objref) 
+			objref:set_properties({ textures= {"mytexture1.png"},
+									visual_size = {x=1, y=1} })
+		end
+
+		function my_display_update2(pos, objref) 
+			objref:set_properties({ textures= {"mytexture2.png"},
+									visual_size = {x=1, y=1} })
+		end
+
+		minetest.register_node("mymod:test_display_node", {
+			...
+			paramtype2 = "wallmounted",
+			...
+			display_entities = {
+				["mymod:entity1"] = { depth = 0.3,
+					on_display_update = my_display_update1},
+				["mymod:entity1"] = { depth = 0.2, height = 0.1,
+					on_display_update = my_display_update2},
+			},
+			...
+			on_place = display_lib.on_place,
+			on_construct = display_lib.on_construct,
+			on_destruct = display_lib.on_destruct,
+			on_rotate = display_lib.on_rotate,
+			...
+		})
+
+
+

mods/display_modpack-master/display_lib/LICENSE.txt

@@ -0,0 +1,166 @@
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
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+Library.
+

mods/display_modpack-master/display_lib/README.md

@@ -0,0 +1,11 @@
+# Dislpay Lib
+
+This library's purpose is to ease creation of nodes with one or more displays on sides. For example, signs and clocks. Display can be dynamic and/or different for each node instance.
+
+**Limitations**: This lib uses entities to draw display. This means display has to be vertical. So display nodes rotation are limitated to "upside up" positions.
+
+**Dependancies**:default
+
+**License**: LPGL
+
+**API**: See API.md document please.

mods/display_modpack-master/display_lib/init.lua

@@ -0,0 +1,225 @@
+--[[
+    display_lib mod for Minetest - Library to add dynamic display 
+    capabilities to nodes
+    (c) Pierre-Yves Rollo
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+--]]
+
+display_lib = {}
+
+-- Miscelaneous values depending on wallmounted param2
+local wallmounted_values = {
+	[0]={dx=0,  dz=0,  rx=0,  rz=0,  yaw=0,          rotate=0}, -- Should never be used
+		{dx=0,  dz=0,  rx=0,  rz=0,  yaw=0,          rotate=1}, -- Should never be used
+		{dx=-1, dz=0,  rx=0,  rz=-1, yaw=-math.pi/2, rotate=5},
+		{dx=1,  dz=0,  rx=0,  rz=1,  yaw=math.pi/2,  rotate=4},
+		{dx=0,  dz=-1, rx=1,  rz=0,  yaw=0,          rotate=2},
+		{dx=0,  dz=1,  rx=-1, rz=0,  yaw=math.pi,    rotate=3}
+}
+
+-- Miscelaneous values depending on facedir param2
+local facedir_values = {
+	[0]={dx=0,  dz=-1, rx=1,  rz=0,  yaw=0,          rotate=1},
+	    {dx=-1, dz=0,  rx=0,  rz=-1, yaw=-math.pi/2, rotate=2},
+	    {dx=0,  dz=1,  rx=-1, rz=0,  yaw=math.pi,    rotate=3},
+		{dx=1,  dz=0,  rx=0,  rz=1,  yaw=math.pi/2,  rotate=0},
+	    -- Forbiden values :
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	    {dx=0, dz=0, rx=0, rz=0, yaw=0, rotate=0},
+	}
+
+-- dx/dy = depth vector, rx/ly = right vector, yaw = yaw of entity,
+-- rotate = next facedir/wallmount on rotate
+
+local function get_values(node)
+	local ndef = minetest.registered_nodes[node.name]
+
+	if ndef then
+		if ndef.paramtype2 == "wallmounted" then
+			return wallmounted_values[node.param2]
+		end
+		if ndef.paramtype2 == "facedir" then
+			return facedir_values[node.param2]
+		end
+	end
+end
+
+--- Gets the display entities attached with a node. Removes extra ones
+local function get_entities(pos)
+	local objrefs = {}
+	local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
+	if ndef and ndef.display_entities then
+		for _, objref in ipairs(minetest.get_objects_inside_radius(pos, 0.5)) do
+			local entity = objref:get_luaentity()
+		    if entity and ndef.display_entities[entity.name] then
+				if objrefs[entity.name] then
+				    objref:remove()
+				else
+					objrefs[entity.name] = objref
+				end
+		    end
+		end
+	end
+	return objrefs
+end
+
+local function clip_pos_prop(posprop)
+	if posprop then
+		return math.max(-0.5, math.min(0.5, posprop))
+	else
+		return 0
+	end
+end
+
+--- (Create and) place display entities according to the node orientation
+local function place_entities(pos)
+	local node = minetest.get_node(pos)
+	local ndef = minetest.registered_nodes[node.name]
+	local values = get_values(node)
+	local objrefs = get_entities(pos)
+
+	if values and ndef and ndef.display_entities then
+
+		for entity_name, props in pairs(ndef.display_entities) do
+			local depth = clip_pos_prop(props.depth)
+			local height = clip_pos_prop(props.height)
+			local right = clip_pos_prop(props.right)
+			
+			if not objrefs[entity_name] then
+				objrefs[entity_name] = minetest.add_entity(pos, entity_name)
+			end
+
+			objrefs[entity_name]:setpos({
+				x = pos.x - values.dx * depth + values.rx * right,
+				y = pos.y + height,
+				z = pos.z - values.dz * depth + values.rz * right})
+
+			objrefs[entity_name]:setyaw(values.yaw)
+		end
+	end
+	return objrefs
+end
+
+--- Call on_display_update callback of a node for one of its display entities
+local function call_node_on_display_update(pos, objref)
+	local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
+	local entity = objref:get_luaentity()
+	if ndef and ndef.display_entities and entity and ndef.display_entities[entity.name] then
+		ndef.display_entities[entity.name].on_display_update(pos, objref)
+	end	
+end
+
+--- Force entity update
+function display_lib.update_entities(pos)
+	local objrefs = place_entities(pos)
+	for _, objref in pairs(objrefs) do
+		call_node_on_display_update(pos, objref)
+    end
+end
+
+--- On_activate callback for display_lib entities. Calls on_display_update callbacks 
+--- of corresponding node for each entity.
+function display_lib.on_activate(entity, staticdata)
+	if entity then
+		call_node_on_display_update(entity.object:getpos(), entity.object)
+	end
+end
+
+--- On_place callback for display_lib items. Does nothing more than preventing item
+--- from being placed on ceiling or ground 
+function display_lib.on_place(itemstack, placer, pointed_thing)
+	local ndef = minetest.registered_nodes[itemstack.name]
+	local above = pointed_thing.above
+	local under = pointed_thing.under
+	local dir = {x = under.x - above.x,
+				 y = under.y - above.y,
+				 z = under.z - above.z}
+
+	if ndef and ndef.paramtype2 == "wallmounted" then
+		local wdir = minetest.dir_to_wallmounted(dir)
+
+		if wdir == 0 or wdir == 1 then
+			dir = placer:get_look_dir()
+			dir.y = 0
+			wdir = minetest.dir_to_wallmounted(dir)
+		end
+
+		return minetest.item_place(itemstack, placer, pointed_thing, wdir)
+	else
+		return minetest.item_place(itemstack, placer, pointed_thing)
+	end
+end
+
+--- On_construct callback for display_lib items. Creates entities and update them.
+function display_lib.on_construct(pos)
+	display_lib.update_entities(pos)
+end
+
+--- On_destruct callback for display_lib items. Removes entities.
+function display_lib.on_destruct(pos)
+	local objrefs = get_entities(pos)
+	
+	for _, objref in pairs(objrefs) do 
+		objref:remove()
+	end
+end
+
+-- On_rotate (screwdriver) callback for display_lib items. Prevents axis rotation and reorients entities.
+function display_lib.on_rotate(pos, node, user, mode, new_param2)
+	if mode ~= screwdriver.ROTATE_FACE then return false end
+
+	local values = get_values(node)
+
+	if values then
+		minetest.swap_node(pos, {name = node.name, param1 = node.param1, param2 = values.rotate})
+		place_entities(pos)
+		return true
+	else
+		return false
+	end
+end
+
+--- Creates display entity with some fields and the on_activate callback
+function display_lib.register_display_entity(entity_name)
+	if not minetest.registered_entity then
+		minetest.register_entity(':'..entity_name, {
+			collisionbox = { 0, 0, 0, 0, 0, 0 },
+			visual = "upright_sprite",
+			textures = {},
+			on_activate = display_lib.on_activate,
+		})
+	end
+end
+
+
+

mods/display_modpack-master/font_lib/API.md

@@ -0,0 +1,47 @@
+# Font Lib API
+This document describes Font Lib API. Font Lib creates textures for font display on entities.
+
+## Provided methods
+### get\_line\_width
+**font\_lib.get\_line\_width(text)**
+
+Computes line width for a given font height and text
+**text**: Text to be rendered
+
+**Returns**: rendered text width
+
+### make\_line\_texture
+**font\_lib.make\_line\_texture(text, texturew, x, y)**
+
+Builds texture part for a text line
+
+**text**: Text to be rendered
+
+**texturew**: Width of the texture (extra text is not rendered)
+
+**x**: Starting x position in texture
+
+**y**: Vertical position of the line in texture
+
+**Returns**: Texture string
+
+### make\_multiline\_texture
+**font\_lib.make\_multiline\_texture(text, texturew, textureh, maxlines, valign, color)**
+
+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
+
+**valign**: Vertical text align ("top" or "center")
+
+**color**: Color of the text
+
+**Returns**: Texture string
+
+

mods/display_modpack-master/font_lib/LICENSE.txt

@@ -0,0 +1,166 @@
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+  A "Combined Work" is a work produced by combining or linking an
+Application with the Library.  The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+  The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+  The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+  1. Exception to Section 3 of the GNU GPL.
+
+  You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+  2. Conveying Modified Versions.
+
+  If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
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+
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+

mods/display_modpack-master/font_lib/README.md

@@ -0,0 +1,14 @@
+# Font Lib
+
+This library for font display on entities (to be used with display_lib for sign creation).
+
+**Dependancies**: default
+
+**License**: LGPL
+
+(Font taken from VanessaE's homedecor/signs_lib, originally under WTFPL)
+
+**API**: See API.md document please.
+
+
+

mods/display_modpack-master/font_lib/copyright.txt

@@ -0,0 +1,2 @@
+Code by Pierre-Yves Rollo
+Textures by Vanessa Ezekowitz

mods/display_modpack-master/font_lib/init.lua

@@ -0,0 +1,174 @@
+--[[
+    font_lib mod for Minetest - Library to add font display capability 
+    to display_lib mod. 
+    (c) Pierre-Yves Rollo
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+--]]
+
+-- Global variables
+
+font_lib = {}
+font_lib.path = minetest.get_modpath("font_lib")
+font_lib.font_height = 12
+font_lib.font = {}
+
+-- Local functions
+
+local function get_next_char(text, pos)
+	pos = pos + 1
+	local char = text:sub(pos, pos):byte()
+	if char >= 0x80 then
+		if char == 0xc2 or char == 0xc3 then
+			pos = pos + 1
+			char = (char - 0xc2) * 0x40 + text:sub(pos, pos):byte()
+		else
+			char = 0
+		end
+	end
+	if font_lib.font[char] == nil then char=0 end
+
+	return char, pos
+end
+
+local function split_lines(text, maxlines)
+	local splits = text:split("\n")
+	if maxlines then
+		local lines = {}
+		for num = 1,maxlines do
+			lines[num] = splits[num]
+		end
+		return lines
+	else
+		return splits
+	end
+end
+
+-- Computes line width for a given font height and text
+-- @param text Text to be rendered
+-- @return Rendered text width
+
+function font_lib.get_line_width(text)
+	local char
+	local width = 0
+
+    p=0
+ 
+	while p < #text do
+		char, p = get_next_char(text, p)
+		width = width + font_lib.font[char].width
+	end
+
+	return width
+end
+
+--- Builds texture part for a text line
+-- @param text Text 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_lib.make_line_texture(text, texturew, x, y)
+	local char
+
+	local texture = ""
+
+    p=0
+ 
+	while p < #text do
+		char, p = get_next_char(text, p)
+
+		-- Add image only if it is visible (at least partly)
+		if x + font_lib.font[char].width >= 0 and x <= texturew then
+			texture = texture..string.format(":%d,%d=%s", x, y, font_lib.font[char].filename)
+		end
+		x = x + font_lib.font[char].width
+
+	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 valign Vertical text align ("top" or "center")
+-- @param color Color of the text
+-- @return Texture string
+
+function font_lib.make_multiline_texture(text, texturew, textureh, maxlines, valign, color)
+	local texture = ""
+	local lines = split_lines(text, maxlines)
+	local y
+
+	if valign == "top" then
+		y = font_lib.font_height / 2 - 1
+	else		
+		y = (textureh - font_lib.font_height * #lines) / 2
+	end
+
+	for _, line in pairs(lines) do
+		texture = texture..font_lib.make_line_texture(line, texturew,
+			(texturew - font_lib.get_line_width(line)) / 2, y)
+		y = y + font_lib.font_height
+	end
+
+	texture = string.format("[combine:%dx%d", texturew, textureh)..texture
+	if color then texture = texture.."^[colorize:"..color end
+
+	return texture
+end
+
+--- Standard on_display_update entity callback.
+-- Node should have a corresponding display_entity with size, resolution and maxlines fields and 
+-- optionally valign and color fields
+-- @param pos Node position
+-- @param objref Object reference of entity
+
+function font_lib.on_display_update(pos, objref)
+	local meta = minetest.get_meta(pos)
+	local text = meta:get_string("display_text")
+	local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
+	local entity = objref:get_luaentity()
+
+    if entity and ndef.display_entities[entity.name] then
+		local def = ndef.display_entities[entity.name]
+
+		objref:set_properties({ 
+			textures={font_lib.make_multiline_texture(
+				text, def.size.x*def.resolution.x, def.size.y*def.resolution.y, 
+				def.maxlines, def.valign, def.color)}, 
+			visual_size = def.size
+		})
+	end
+end
+
+-- Populate fonts table
+
+local filename
+for char = 0,255 do
+	filename = string.format("font_lib_%02x.png", char)
+	local file=io.open(font_lib.path.."/textures/"..filename,"rb")
+	if file~=nil then 
+		-- Get png width, suposing png width is less than 256 (it is the case for all font textures)
+		-- All font png are smaller than 256x256 --> read only last byte
+		file:seek("set",19)
+		local w = file:read(1)
+		file:close()
+		font_lib.font[char] = {filename=filename, width=w:byte()}
+	end
+end
+