Initial release

LICENSE

@@ -633,8 +633,8 @@ the "copyright" line and a pointer to where the full notice is found.
     Copyright (C) <year>  <name of author>
 
     This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Affero General Public License as published
-    by the Free Software Foundation, either version 3 of the License, or
+    it under the terms of the GNU Affero 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,

LICENSE2

@@ -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.
+
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README.rst

@@ -0,0 +1,76 @@
+==========
+metrosigns
+==========
+
+This is a mod for `Minetest <https://www.minetest.net/>`__, providing an extended selection of signs for use in your train and metro networks.
+
+.. image:: screenshots/example1.png
+  :alt: Train platform
+
+The mod includes:
+
+* Semi-realistic signage from twenty major cities - the London Underground, the Paris Metro, the New York Subway - and more!
+* Line number signs from 1-99, using the colour scheme established by `advtrains_subwayblocks <https://git.gpcf.eu/?p=advtrains_subwayblocks.git>`__
+* Platform signs from 1-99
+* A sign-writing machine (for use in survival mode)
+* Nodes from `advtrains_subwayblocks <https://git.gpcf.eu/?p=advtrains_subwayblocks.git>`__ and `trainblocks <https://github.com/maxhipp/trainblocks_bc>`__, if those mods aren't already loaded
+* Over 1300 items in total
+
+The mod includes and builds on material from the following mods:
+
+* `advtrains_subwayblocks <https://git.gpcf.eu/?p=advtrains_subwayblocks.git>`__ by gpcf/orwell
+* `trainblocks <https://github.com/maxhipp/trainblocks_bc>`__ by Maxx
+* `roads <https://cheapiesystems.com/git/roads/>`__ by cheapie
+
+Licences
+--------
+
+The sign writer and ink cartridges (code and textures) are licenced under CC-BY-SA 3.0 Unported.
+
+Everything else is licenced under GNU Affero GPL.
+
+Authors
+-------
+
+Code and textures: `A S Lewis <https://github.com/axcore/>`__.
+
+Code and texture contributors: gpcf/orwell, Max, cheapie
+
+Dependencies
+------------
+
+There are no dependencies. **NB This is currently not true - see below.**
+
+Optional dependencies
+---------------------
+
+If default and `basic_materials <https://gitlab.com/VanessaE/basic_materials>`__ are loaded, the sign writing machine and ink cartridges are craftable.
+
+If signs_api from `display_modpack <https://github.com/pyrollo/display_modpack>`__ is loaded, you can create signs with customisable text.
+
+Downloads
+---------
+
+The latest release is available `here <https://github.com/axcore/metrosigns>`__.
+
+Screenshots
+-----------
+
+.. image:: screenshots/example2.png
+  :alt: Sugn-writing machine
+
+.. image:: screenshots/example3.png
+  :alt: Various light boxes
+
+.. image:: screenshots/example4.png
+  :alt: Various line signs
+
+.. image:: screenshots/example5.png
+  :alt: Various platform signs
+
+Known bugs
+----------
+- Minetest will not (or cannot) read settingtypes.txt correctly. Until this is resolved, all nodes are available by default
+- The sign-writing machine will not display more than one page of signs at a time
+- signs_api from display_modpack should be an optional dependency, but the minetest game won't start (sometimes) if signs_api is not loaded
+- Sounds for the sign-writing machine are commented out because I don't know how to make them work

customsigns.lua

@@ -0,0 +1,61 @@
+---------------------------------------------------------------------------------------------------
+-- metrosigns mod for minetest by A S Lewis
+--      https://github.com/axcore/metrosigns
+--      Licence: GNU Affero GPL
+---------------------------------------------------------------------------------------------------
+
+---------------------------------------------------------------------------------------------------
+-- Signs with customisable text (designed to be used alongside the map nodes). Requires signs_api
+--      from display_modpack
+---------------------------------------------------------------------------------------------------
+
+if HAVE_SIGNS_API_FLAG and metrosigns.create_all_flag or metrosigns.create_text_flag then
+
+    local category = "Signs with text"
+    metrosigns.register_category(category)
+
+    width_table = {
+        [1] = "short",
+        [2] = "medium",
+        [3] = "long",
+    }
+
+    for width, width_descrip in pairs(width_table) do
+
+        signs_api.register_sign(
+            ":signs_road",
+            "metrosigns_text_"..width_descrip,
+            {
+                depth = 2/16,
+                width = width,
+                height = 1,
+                entity_fields = {
+                    size = { x = width, y = 12/16 },
+                    maxlines = 3,
+                    color = "#000",
+                },
+                node_fields = {
+                    description = "Metrosigns Map Text ("..width_descrip..")",
+                    tiles = {
+                        "metrosigns_text_side.png",
+                        "metrosigns_text_side.png",
+                        "metrosigns_text_side.png",
+                        "metrosigns_text_side.png",
+                        "metrosigns_text_side.png",
+                        "metrosigns_text_front.png",
+                    },
+                    inventory_image = "metrosigns_text_width_"..width_descrip.."_inv.png",
+                },
+            }
+        )
+        metrosigns.register_sign(
+            category,
+            "signs_road:metrosigns_text_"..width_descrip,
+            (metrosigns.writer.text_units * width)
+        )
+
+        minetest.override_item("signs_road:metrosigns_text_"..width_descrip, { light_source = 5 })
+
+    end
+
+end

extsigns.lua

@@ -0,0 +1,122 @@
+---------------------------------------------------------------------------------------------------
+-- metrosigns mod for minetest by A S Lewis
+--      https://github.com/axcore/metrosigns
+--      Licence: GNU Affero GPL
+---------------------------------------------------------------------------------------------------
+
+---------------------------------------------------------------------------------------------------
+-- Extended line and platform signs
+---------------------------------------------------------------------------------------------------
+
+line_flag = metrosigns.create_all_flag or metrosigns.create_ext_line_flag
+line_min = metrosigns.ext_line_min
+line_max = metrosigns.ext_line_max
+if not isint(line_min) or not isint(line_max) or line_min < 0 or line_max > 99 then
+    line_flag = false
+end
+
+if line_flag then
+    line_category = "Extended line signs"
+    metrosigns.register_category(line_category)
+end
+
+platform_flag = metrosigns.create_all_flag or metrosigns.create_ext_platform_flag
+platform_min = metrosigns.ext_platform_min
+platform_max = metrosigns.ext_platform_max
+if not isint(platform_min) or not isint(platform_max) or platform_min < 0 or platform_max > 99 then
+    platform_flag = false
+end
+
+if platform_flag then
+    platform_category = "Extended platform signs"
+    metrosigns.register_category(platform_category)
+end
+
+if line_flag or platform_flag then
+
+    for m = 0, 9, 1 do
+        for n = 0, 9, 1 do
+
+            num = (m*10) + n
+            if n == 6 then
+                col = "black"
+            else
+                col = "white"
+            end
+
+            if num >= line_min and num <= line_max then
+
+                minetest.register_node("metrosigns:sign_line_"..m..n, {
+                    description = "Line "..num.." sign",
+                    tiles = {
+                        "metrosigns_bg_small_"..n..".png^metrosigns_char_small_"..col.."_"..m
+                            .."0.png^metrosigns_char_small_"..col.."_"..n..".png"
+                    },
+                    inventory_image = "metrosigns_bg_large_"..n..".png^metrosigns_char_large_"..col
+                        .."_"..m.."0.png^metrosigns_char_large_"..col.."_"..n..".png",
+                    groups = {
+                        attached_node = 1, choppy = 2, flammable = 2, oddly_breakable_by_hand = 3
+                    },
+                    light_source = 12,
+                    drawtype = "nodebox",
+                    is_ground_content = false,
+                    legacy_wallmounted = true,
+                    node_box = {
+                        type = "wallmounted",
+                        wall_top = {-8/16, -4/16, -4/16, -7/16, 4/16, 4/16},
+                        wall_bottom = {-8/16, -4/16, -4/16, -7/16, 4/16, 4/16},
+                        wall_side = {-8/16, -4/16, -5/16, -7/16, 4/16, 5/16}
+                    },
+                    paramtype = "light",
+                    paramtype2 = "wallmounted",
+                    sunlight_propagates = true,
+                    walkable = false
+                })
+                metrosigns.register_sign(
+                    line_category, "metrosigns:sign_line_"..m..n, metrosigns.writer.sign_units
+                )
+
+            end
+
+            if num >= platform_min and num <= platform_max then
+
+                minetest.register_node("metrosigns:sign_platform_"..m..n, {
+                    description = "Platform "..num.." sign",
+                    tiles = {
+                        "metrosigns_bg_small_platform.png^metrosigns_char_small_white_"..m
+                            .."0.png^metrosigns_char_small_white_"..n..".png"
+                    },
+                    inventory_image
+                        = "metrosigns_bg_large_platform.png^metrosigns_char_large_white_"..m
+                        .."0.png^metrosigns_char_large_white_"..n..".png",
+                    groups = {cracky = 3},
+                    light_source = 5,
+                    drawtype = "nodebox",
+                    is_ground_content = false,
+                    legacy_wallmounted = true,
+                    node_box = {
+                        type = "wallmounted",
+                        wall_top = {-8/16, -4/16, -4/16, -7/16, 4/16, 4/16},
+                        wall_bottom = {-8/16, -4/16, -4/16, -7/16, 4/16, 4/16},
+                        wall_side = {-8/16, -4/16, -5/16, -7/16, 4/16, 5/16}
+                    },
+                    node_box = {
+                        type = "fixed",
+                        fixed = {
+                            { -5/16, -4/16, 6/16,  5/16,  4/16, 8/16},
+                        },
+                    },
+                    paramtype = "light",
+                    paramtype2 = "facedir",
+                    walkable = false
+                })
+                metrosigns.register_sign(
+                    platform_category,
+                    "metrosigns:sign_platform_"..m..n,
+                    metrosigns.writer.sign_units
+                )
+
+            end
+        end
+    end
+end

init.lua

@@ -0,0 +1,234 @@
+---------------------------------------------------------------------------------------------------
+-- metrosigns mod for minetest by A S Lewis
+--      https://github.com/axcore/metrosigns
+--      Licence: GNU Affero GPL
+---------------------------------------------------------------------------------------------------
+-- Includes code/textures from advtrains_subwayblocks by gpcf/orwell
+--      https://git.gpcf.eu/?p=advtrains_subwayblocks.git
+--      Licence: GNU Affero GPL
+--
+-- Includes code/textures from trainblocks by Maxx
+--      https://github.com/maxhipp/trainblocks_bc
+--      https://forum.minetest.net/viewtopic.php?t=19743
+--      Licence: GNU Affero GPL
+--
+-- Includes code/textures from roads by cheapie
+--      https://cheapiesystems.com/git/roads/
+--      https://forum.minetest.net/viewtopic.php?t=13904
+--      Licence: CC-BY-SA 3.0 Unported
+---------------------------------------------------------------------------------------------------
+
+---------------------------------------------------------------------------------------------------
+-- Create namespaces
+---------------------------------------------------------------------------------------------------
+
+metrosigns = {}
+metrosigns.name = "metrosigns"
+metrosigns.ver_max = 1
+metrosigns.ver_min = 0
+metrosigns.ver_rev = 0
+
+metrosigns.writer = {}
+
+---------------------------------------------------------------------------------------------------
+-- Constants
+---------------------------------------------------------------------------------------------------
+
+metrosigns.path_mod = minetest.get_modpath(minetest.get_current_modname())
+
+-- If default and basic_materials are loaded, the sign writer and cartridges are craftable
+if minetest.get_modpath("default") then
+    HAVE_DEFAULT_FLAG = true
+else
+    HAVE_DEFAULT_FLAG = false
+end
+
+if minetest.get_modpath("basic_materials") then
+    HAVE_BASIC_MATERIALS_FLAG = true
+else
+    HAVE_BASIC_MATERIALS_FLAG = false
+end
+
+-- If signs_api from display_modpack is loaded, create signs with customisable text
+if minetest.get_modpath("signs_api") then
+    HAVE_SIGNS_API_FLAG = true
+else
+    HAVE_SIGNS_API_FLAG = false
+end
+
+-- If advtrains_subwayblocks is loaded, we don't create duplicate blocks
+if minetest.get_modpath("advtrains_subwayblocks") then
+    HAVE_SUBWAYBLOCKS_FLAG = true
+else
+    HAVE_SUBWAYBLOCKS_FLAG = false
+end
+
+-- If trainblocks is loaded, we don't create duplicate blocks
+if minetest.get_modpath("trainblocks") then
+    HAVE_TRAINBLOCKS_FLAG = true
+else
+    HAVE_TRAINBLOCKS_FLAG = false
+end
+
+-- Cartridge ink levels are implemented using wear
+-- Ink capacity of a cartridge
+metrosigns.writer.cartridge_max = 60000
+-- Amount of ink used for one unit
+metrosigns.writer.cartridge_min = 1000
+-- Number of units used for printing various kinds of sign
+metrosigns.writer.box_units = 30
+metrosigns.writer.sign_units = 5
+metrosigns.writer.map_units = 10
+metrosigns.writer.text_units = 10
+
+-- Used in material copied from advtrains_subwayblocks and trainblocks
+box_groups = {cracky = 3}
+box_light_source = 10
+
+---------------------------------------------------------------------------------------------------
+-- Variables
+---------------------------------------------------------------------------------------------------
+
+-- Signs are divided into categories. A category's name is the same as the city description (i.e.
+--  "London Underground" rather than "London"
+-- Ordered list of categories, as displayed in the sign-writing
+--  machine's dropdrown box, e.g. categories[1] = "London Underground",
+--  categories[2] = "Paris Metro"
+metrosigns.writer.categories = {}
+-- The current category; one of the values in metrosigns.writer.categories. Only signs in this
+--  category are visible in the sign-writing machine's list
+metrosigns.writer.current_category = nil
+-- Ordered list of signs in each category and their properties. The properties are arranged in a
+--  table:
+--      category - one of the values in metrosigns.writer.current_category
+--      name - the name of the sign's node, e.g. "metrosigns:map_london_bakerloo_line"
+--      ink_needed - the amount of ink removed from each cartridge when printing the sign, e.g. 10
+-- Thus we have, e.g. signtypes["London Underground"][1] = property_table,
+--      signtypes["London Underground"][2] = property_table, etc
+metrosigns.writer.signtypes = {}
+-- The number of signs in each category, e.g. signcounts["London Underground"] = 20
+metrosigns.writer.signcounts = {}
+
+---------------------------------------------------------------------------------------------------
+-- Load settings
+---------------------------------------------------------------------------------------------------
+
+-- All settings temporarily enabled, because I can't get settingtypes.txt to behave as intended
+--metrosigns.create_all_flag = minetest.setting_get("metrosigns_create_all") or false
+metrosigns.create_all_flag = minetest.setting_get("metrosigns_create_all") or true
+
+metrosigns.create_subwayblocks_flag = minetest.setting_get("metrosigns_create_subwayblocks")
+or false
+metrosigns.create_trainblocks_flag = minetest.setting_get("metrosigns_create_trainblocks") or false
+
+metrosigns.create_ext_line_flag = minetest.setting_get("metrosigns_create_ext_line") or true
+--metrosigns.ext_line_min = minetest.setting_get("metrosigns_ext_line_min") or 11
+--metrosigns.ext_line_max = minetest.setting_get("metrosigns_ext_line_min") or 20
+metrosigns.ext_line_min = minetest.setting_get("metrosigns_ext_line_min") or 1
+metrosigns.ext_line_max = minetest.setting_get("metrosigns_ext_line_min") or 99
+
+metrosigns.create_ext_platform_flag = minetest.setting_get("metrosigns_create_ext_platform") or true
+--metrosigns.ext_platform_min = minetest.setting_get("metrosigns_ext_platform_min") or 11
+--metrosigns.ext_platform_max = minetest.setting_get("metrosigns_ext_platform_min") or 20
+metrosigns.ext_platform_min = minetest.setting_get("metrosigns_ext_platform_min") or 1
+metrosigns.ext_platform_max = minetest.setting_get("metrosigns_ext_platform_min") or 99
+
+metrosigns.create_text_flag = minetest.setting_get("metrosigns_create_text") or true
+
+metrosigns.create_athens_flag = minetest.setting_get("metrosigns_create_athens") or false
+metrosigns.create_bangkok_flag = minetest.setting_get("metrosigns_create_bangkok") or false
+metrosigns.create_berlin_flag = minetest.setting_get("metrosigns_create_berlin") or false
+metrosigns.create_bucharest_flag = minetest.setting_get("metrosigns_create_bucharest") or false
+metrosigns.create_budapest_flag = minetest.setting_get("metrosigns_create_budapest") or false
+metrosigns.create_glasgow_flag = minetest.setting_get("metrosigns_create_glasgow")or false
+metrosigns.create_hcmc_flag = minetest.setting_get("metrosigns_create_hcmc") or false
+metrosigns.create_london_flag = minetest.setting_get("metrosigns_create_london") or true
+metrosigns.create_luton_flag = minetest.setting_get("metrosigns_create_luton") or false
+metrosigns.create_madrid_flag = minetest.setting_get("metrosigns_create_madrid") or false
+metrosigns.create_moscow_flag = minetest.setting_get("metrosigns_create_moscow") or false
+metrosigns.create_newyork_flag = minetest.setting_get("metrosigns_create_newyork") or false
+metrosigns.create_paris_flag = minetest.setting_get("metrosigns_create_paris") or false
+metrosigns.create_prague_flag = minetest.setting_get("metrosigns_create_prague") or false
+metrosigns.create_rome_flag = minetest.setting_get("metrosigns_create_rome") or false
+metrosigns.create_stockholm_flag = minetest.setting_get("metrosigns_create_stockholm") or false
+metrosigns.create_taipei_flag = minetest.setting_get("metrosigns_create_taipei") or false
+metrosigns.create_tokyo_flag = minetest.setting_get("metrosigns_create_tokyo") or false
+metrosigns.create_toronto_flag = minetest.setting_get("metrosigns_create_toronto") or false
+metrosigns.create_vienna_flag = minetest.setting_get("metrosigns_create_vienna") or false
+
+---------------------------------------------------------------------------------------------------
+-- General functions
+---------------------------------------------------------------------------------------------------
+
+function capitalise(str)
+
+    if str == "newyork" then
+        return "New York"
+    else
+        return (str:gsub("^%l", string.upper))
+    end
+
+end
+
+function isint(n)
+
+  return n==math.floor(n)
+
+end
+
+-- (Used by the sign-writing machine, if it is created)
+function metrosigns.register_category(category)
+
+    table.insert(metrosigns.writer.categories, category)
+    metrosigns.writer.signcounts[category] = 0
+    metrosigns.writer.signtypes[category] = {}
+    if metrosigns.writer.current_category == nil then
+        metrosigns.writer.current_category = category
+    end
+
+end
+
+function metrosigns.register_sign(category, node, ink_needed)
+
+    local data = {category=category, name=node, ink_needed=ink_needed}
+    table.insert(metrosigns.writer.signtypes[category], data)
+    metrosigns.writer.signcounts[category] = metrosigns.writer.signcounts[category] + 1
+
+end
+
+---------------------------------------------------------------------------------------------------
+-- Original material from advtrains_subwayblocks by gpcf/orwell
+---------------------------------------------------------------------------------------------------
+
+dofile(metrosigns.path_mod.."/subwayblocks.lua")
+
+---------------------------------------------------------------------------------------------------
+-- Original material from trainblocks by Maxx
+---------------------------------------------------------------------------------------------------
+
+dofile(metrosigns.path_mod.."/trainblocks.lua")
+
+---------------------------------------------------------------------------------------------------
+-- Extended line and platform signs
+---------------------------------------------------------------------------------------------------
+
+dofile(metrosigns.path_mod.."/extsigns.lua")
+
+---------------------------------------------------------------------------------------------------
+-- Signs with customisable text (designed to be used alongside the map nodes). Requires signs_api
+--      from display_modpack
+---------------------------------------------------------------------------------------------------
+
+dofile(metrosigns.path_mod.."/customsigns.lua")
+
+---------------------------------------------------------------------------------------------------
+-- City-specific signs
+---------------------------------------------------------------------------------------------------
+
+dofile(metrosigns.path_mod.."/citysigns.lua")
+
+---------------------------------------------------------------------------------------------------
+-- Sign-writing machines and ink cartridges
+---------------------------------------------------------------------------------------------------
+
+dofile(metrosigns.path_mod.."/machine.lua")

machine.lua

@@ -0,0 +1,376 @@
+---------------------------------------------------------------------------------------------------
+-- metrosigns mod for minetest by A S Lewis
+--      https://github.com/axcore/metrosigns
+--      Licence: GNU Affero GPL
+---------------------------------------------------------------------------------------------------
+-- Code/textures from roads by cheapie
+--      https://forum.minetest.net/viewtopic.php?t=13904
+--      https://cheapiesystems.com/git/roads/
+--      Licence: CC-BY-SA 3.0 Unported
+---------------------------------------------------------------------------------------------------
+
+---------------------------------------------------------------------------------------------------
+-- Sign-writing machine functions, based on the printer in the roads mod by cheapie
+-- Functions
+---------------------------------------------------------------------------------------------------
+
+function metrosigns.writer.can_dig(pos)
+
+    local meta = minetest.get_meta(pos)
+    local inv = meta:get_inventory()
+    return (
+        inv:is_empty("redcart") and inv:is_empty("greencart")
+        and inv:is_empty("bluecart") and inv:is_empty("plastic")
+    )
+
+end
+
+function metrosigns.writer.checksupplies(pos)
+
+    local meta = minetest.get_meta(pos)
+    local inv = meta:get_inventory()
+    local redcart = inv:get_stack("redcart", 1)
+    local greencart = inv:get_stack("greencart", 1)
+    local bluecart = inv:get_stack("bluecart", 1)
+    local plastic = inv:get_stack("plastic", 1)
+
+    if not redcart:to_table() or not greencart:to_table() or not bluecart:to_table()
+    or not plastic:to_table() then
+        return false
+    end
+
+    local redcart_good = redcart:to_table().name == "metrosigns:cartridge_red"
+        and redcart:to_table().wear <= metrosigns.writer.cartridge_max
+    local greencart_good = greencart:to_table().name == "metrosigns:cartridge_green"
+        and greencart:to_table().wear <= metrosigns.writer.cartridge_max
+    local bluecart_good = bluecart:to_table().name == "metrosigns:cartridge_blue"
+        and bluecart:to_table().wear <= metrosigns.writer.cartridge_max
+    local plastic_good = plastic:to_table().name == "basic_materials:plastic_sheet"
+    local good = redcart_good and greencart_good and bluecart_good and plastic_good
+
+    return good
+
+end
+
+function metrosigns.writer.nom(pos, amount)
+
+    local meta = minetest.get_meta(pos)
+    local inv = meta:get_inventory()
+    local redcart = inv:get_stack("redcart", 1)
+    local greencart = inv:get_stack("greencart", 1)
+    local bluecart = inv:get_stack("bluecart", 1)
+    local plastic = inv:get_stack("plastic", 1)
+
+    redcart:add_wear(amount * metrosigns.writer.cartridge_min )
+    greencart:add_wear(amount * metrosigns.writer.cartridge_min )
+    bluecart:add_wear(amount * metrosigns.writer.cartridge_min )
+    plastic:take_item(1)
+
+    inv:set_stack("redcart", 1, redcart)
+    inv:set_stack("greencart", 1, greencart)
+    inv:set_stack("bluecart", 1, bluecart)
+    inv:set_stack("plastic", 1, plastic)
+
+end
+
+function metrosigns.writer.populateoutput(pos)
+
+    -- Sanity check: If no signs have been defined, then there is no need to display a formspec
+    if metrosigns.writer.current_category == nil then
+        return
+    end
+
+    local typescount = metrosigns.writer.signcounts[metrosigns.writer.current_category]
+    local pagesize = 8*5
+    local meta = minetest.get_meta(pos)
+    local inv = meta:get_inventory()
+    local page = meta:get_int("page")
+    local maxpage = math.ceil(typescount/pagesize)
+
+    inv:set_list("output", {})
+    inv:set_size("output", typescount)
+
+    if metrosigns.writer.checksupplies(pos) then
+
+        for k,v in pairs(metrosigns.writer.signtypes[metrosigns.writer.current_category]) do
+            inv:set_stack("output", k, v.name)
+        end
+
+    end
+
+    local dropdown_string = ""
+    for k, v in ipairs(metrosigns.writer.categories) do
+        if k == 1 then
+            dropdown_string = v
+        else
+            dropdown_string = dropdown_string..","..v
+        end
+    end
+
+    meta:set_string("formspec", "size[11,10]"..
+        -- Cartridges
+        "label[0,0;Red\nCartridge]" ..
+        "list[current_name;redcart;1.5,0;1,1;]" ..
+        "label[0,1;Green\nCartridge]" ..
+        "list[current_name;greencart;1.5,1;1,1;]" ..
+        "label[0,2;Blue\nCartridge]" ..
+        "list[current_name;bluecart;1.5,2;1,1;]" ..
+        -- Plastic
+        "label[0,3;Plastic\nSheeting]" ..
+        "list[current_name;plastic;1.5,3;1,1;]" ..
+        -- Sign categories
+        "label[0,5;Sign\nCategory]" ..
+        "dropdown[1.5,5;3.75,1;category;"..dropdown_string..";1]" ..
+        -- List of signs
+        "list[current_name;output;2.8,0;8,5;"..tostring((page-1)*pagesize).."]" ..
+        -- Player inventory
+        "list[current_player;main;1.5,6.25;8,4;]"..
+        -- Page buttons
+        "button[5.5,5;1,1;prevpage;<<<]"..
+        "button[8.5,5;1,1;nextpage;>>>]"..
+        "label[6.75,5.25;Page "..page.." of "..maxpage.."]"
+    )
+    meta:set_int("maxpage",maxpage)
+
+end
+
+function metrosigns.writer.on_construct(pos)
+
+    local meta = minetest.get_meta(pos)
+    local inv = meta:get_inventory()
+
+    meta:set_int("page", 1)
+    meta:set_int("maxpage", 1)
+
+    inv:set_size("redcart", 1)
+    inv:set_size("greencart", 1)
+    inv:set_size("bluecart", 1)
+    inv:set_size("plastic", 1)
+
+    metrosigns.writer.populateoutput(pos)
+
+end
+
+function metrosigns.writer.on_receive_fields(pos, formname, fields, sender)
+
+    local meta = minetest.get_meta(pos)
+
+    if fields.category then
+
+        minetest.log(fields.category)
+
+        -- User has activated the dropdown box
+        if metrosigns.writer.signtypes[fields.category] ~= nil then
+            metrosigns.writer.current_category = fields.category
+        end
+
+    else
+
+        -- User has clicked the page buttons
+        local page = meta:get_int("page")
+        local maxpage = meta:get_int("maxpage")
+
+        if fields.prevpage then
+            page = page - 1
+            if page < 1 then
+                page = maxpage
+            end
+            meta:set_int("page",page)
+        elseif fields.nextpage then
+            page = page + 1
+            if page > maxpage then
+                page = 1
+            end
+            meta:set_int("page",page)
+        end
+
+    end
+
+    -- In all cases, redraw the list of signs for the current category
+    metrosigns.writer.populateoutput(pos)
+
+end
+
+function metrosigns.writer.allow_metadata_inventory_put(pos, listname, index, stack, player)
+
+    if listname == "redcart" then
+
+        if stack:get_name() == "metrosigns:cartridge_red" then
+            return 1
+        else
+            return 0
+        end
+
+    elseif listname == "greencart" then
+
+        if stack:get_name() == "metrosigns:cartridge_green" then
+            return 1
+        else
+            return 0
+        end
+
+    elseif listname == "bluecart" then
+
+        if stack:get_name() == "metrosigns:cartridge_blue" then
+            return 1
+        else
+            return 0
+        end
+
+    elseif listname == "plastic" then
+
+        if stack:get_name() == "basic_materials:plastic_sheet" then
+            return stack:get_count()
+        else
+            return 0
+        end
+
+    else
+
+        return 0
+
+    end
+
+end
+
+function metrosigns.writer.on_metadata_inventory_put(pos)
+
+    metrosigns.writer.populateoutput(pos)
+
+end
+
+function metrosigns.writer.on_metadata_inventory_take(pos, listname, index)
+
+    if listname == "output" then
+        local cost
+            = metrosigns.writer.signtypes[metrosigns.writer.current_category][index].ink_needed
+        metrosigns.writer.nom(pos, cost)
+    end
+
+    metrosigns.writer.populateoutput(pos)
+
+end
+
+function metrosigns.writer.allow_metadata_inventory_move(
+    pos, from_list, from_index, to_list, to_index, count, player
+)
+    return 0
+
+end
+
+---------------------------------------------------------------------------------------------------
+-- Register crafts for the machine and its ink cartridges
+---------------------------------------------------------------------------------------------------
+
+minetest.register_tool("metrosigns:cartridge_red",
+    {
+        description = "Red Ink Cartridge",
+        inventory_image = "streets_cartridge_red.png"
+    }
+)
+
+minetest.register_tool("metrosigns:cartridge_green",
+    {
+        description = "Green Ink Cartridge",
+        inventory_image = "streets_cartridge_green.png"
+    }
+)
+
+minetest.register_tool("metrosigns:cartridge_blue",
+    {
+        description = "Blue Ink Cartridge",
+        inventory_image = "streets_cartridge_blue.png"
+    }
+)
+
+if HAVE_DEFAULT_FLAG and HAVE_BASIC_MATERIALS_FLAG then
+
+    local sheeting = "basic_materials:plastic_sheet"
+
+    minetest.register_craft({
+        output = "metrosigns:cartridge_red",
+        recipe = {
+            {sheeting, sheeting, sheeting},
+            {sheeting, "dye:red", sheeting},
+            {sheeting, "", ""},
+        }
+    })
+
+    minetest.register_craft({
+        output = "metrosigns:cartridge_green",
+        recipe = {
+            {sheeting, sheeting, sheeting},
+            {sheeting, "dye:green", sheeting},
+            {sheeting, "", ""},
+        }
+    })
+
+    minetest.register_craft({
+        output = "metrosigns:cartridge_blue",
+        recipe = {
+            {sheeting, sheeting, sheeting},
+            {sheeting, "dye:blue", sheeting},
+            {sheeting, "", ""},
+        }
+    })
+
+    -- Refills
+    minetest.register_craft({
+        output = "metrosigns:cartridge_red",
+        type = "shapeless",
+        recipe = {"metrosigns:cartridge_red", "dye:red"}
+    })
+
+    minetest.register_craft({
+        output = "metrosigns:cartridge_green",
+        type = "shapeless",
+        recipe = {"metrosigns:cartridge_green", "dye:green"}
+    })
+
+    minetest.register_craft({
+        output = "metrosigns:cartridge_blue",
+        type = "shapeless",
+        recipe = {"metrosigns:cartridge_blue", "dye:blue"}
+    })
+
+    minetest.register_craft({
+        output = "metrosigns:sign_writer",
+        recipe = {
+            {sheeting, "default:steel_ingot", sheeting},
+            {"default:steel_ingot", "basic_materials:energy_crystal_simple", "default:steel_ingot"},
+            {"basic_materials:motor", "default:steel_ingot", "basic_materials:motor"},
+        }
+    })
+
+end
+
+---------------------------------------------------------------------------------------------------
+-- Register the sign-writing machine itself
+---------------------------------------------------------------------------------------------------
+
+minetest.register_node("metrosigns:sign_writer", {
+    description = "Sign Writer",
+    tiles = {
+        "metrosigns_writer_top.png",
+        "metrosigns_writer_side.png",
+        "metrosigns_writer_side.png",
+        "metrosigns_writer_side.png",
+        "metrosigns_writer_side.png",
+        "metrosigns_writer_front.png",
+    },
+    inventory_image = "metrosigns_writer_front.png",
+    groups = {snappy = 3},
+    paramtype = "light",
+    paramtype2 = "facedir",
+--  Commented out because I don't know how to fix the error
+--  sound = default.node_sound_wood_defaults(),
+    walkable = true,
+    -- Callbacks
+    allow_metadata_inventory_move = metrosigns.writer.allow_metadata_inventory_move,
+    allow_metadata_inventory_put = metrosigns.writer.allow_metadata_inventory_put,
+    can_dig = metrosigns.writer.can_dig,
+    on_construct = metrosigns.writer.on_construct,
+    on_metadata_inventory_put = metrosigns.writer.on_metadata_inventory_put,
+    on_metadata_inventory_take = metrosigns.writer.on_metadata_inventory_take,
+    on_receive_fields = metrosigns.writer.on_receive_fields,
+})

mod.conf

@@ -0,0 +1,4 @@
+name = metrosigns
+descriptions = Extensive library of signs for train/metro systems
+depends =
+optional_depends = advtrains_subwayblocks, basic_materials, default, signs_api, trainblocks

settingtypes.txt

@@ -0,0 +1,94 @@
+# -------------------------------------------------------------------------------------------------
+# metrosigns settings
+# -------------------------------------------------------------------------------------------------
+
+# -------------------------------------------------------------------------------------------------
+# Override settings
+# -------------------------------------------------------------------------------------------------
+
+# If enabled, create all items, regardless of the value of other flag settings
+metrosigns_create_all (Enable to create all items. true/false) bool false
+
+# -------------------------------------------------------------------------------------------------
+# Settings for items borrowed from other mods
+# -------------------------------------------------------------------------------------------------
+
+# If enabled, create items from advtrains_subwayblocks. Ignored if that module has been loaded
+metrosigns_create_subwayblocks (Enable to create all items. true/false) bool false
+# If enabled, create items from trainblocks. Ignored if that module has been loaded
+metrosigns_create_trainblocks (Enable to create all items. true/false) bool false
+
+# -------------------------------------------------------------------------------------------------
+# Extended line signs
+# -------------------------------------------------------------------------------------------------
+
+# If enabled, create extended line signs (in the range 00-99)
+metrosigns_create_ext_line (Enable to create extended line signs. true/false) bool true
+# If the flag above is enabled, the range of signs to create: minimum and maxium values (must be
+#   integers in the range 0-99. If values are invalid, no extended line signs are created)
+metrosigns_ext_line_min (Lowest extended line sign. int) int 11
+metrosigns_ext_line_max (Highest extended line sign. int) int 20
+
+# -------------------------------------------------------------------------------------------------
+# Extended platform signs
+# -------------------------------------------------------------------------------------------------
+
+# If enabled, create extended platform signs (in the range 00-99)
+metrosigns_create_ext_platform (Enable to create extended platform signs. true/false) bool true
+# If the flag above is enabled, the range of signs to create: minimum and maxium values (must be
+#   integers in the range 0-99. If values are invalid, no extended platform signs are created)
+metrosigns_ext_platform_min (Lowest extended platform sign. int) int 11
+metrosigns_ext_platform_max (Highest extended platform sign. int) int 20
+
+# -------------------------------------------------------------------------------------------------
+# Map text signs
+# -------------------------------------------------------------------------------------------------
+
+# If enabled, create signs with text (designed to be used alongside the map nodes; requires
+#   signs_api)
+metrosigns_create_text (Enable to create signs with text. true/false) bool true
+
+# -------------------------------------------------------------------------------------------------
+# City settings
+# -------------------------------------------------------------------------------------------------
+
+# If enabled, create items for Athens Metro
+metrosigns_create_athens (Enable to create Athens Metro items. true/false) bool false
+# If enabled, create items for Bangkok BTS Skytrain
+metrosigns_create_bangkok (Enable to create Bangkok BTS Skytrain items. true/false) bool false
+# If enabled, create items for Berlin U-Bahn
+metrosigns_create_berlin (Enable to create Berlin U-Bahn items. true/false) bool false
+# If enabled, create items for Bucharest Metro
+metrosigns_create_bucharest (Enable to create Bucharest Metro items. true/false) bool false
+# If enabled, create items for Budapest Metro
+metrosigns_create_budapest (Enable to create Budapest Metro items. true/false) bool false
+# If enabled, create items for Glasgow Subway
+metrosigns_create_glasgow (Enable to create Glasgow Subway items. true/false) bool false
+# If enabled, create items for Ho Chi Minh City Metro
+metrosigns_create_hcmc (Enable to create Ho Chi Minh City Metro items. true/false) bool false
+# If enabled, create items for London Underground
+metrosigns_create_london (Enable to create London Underground items. true/false) bool true
+# If enabled, create items for Luton to Dunstable Busway
+metrosigns_create_luton (Enable to create Luton to Dunstable Busway items. true/false) bool false
+# If enabled, create items for Madrid Metro
+metrosigns_create_madrid (Enable to create Madrid Metro items. true/false) bool false
+# If enabled, create items for Moscow Metro
+metrosigns_create_moscow (Enable to create Moscow Metro items. true/false) bool false
+# If enabled, create items for New York City Subway
+metrosigns_create_newyork (Enable to create New York City Subway items. true/false) bool false
+# If enabled, create items for Paris Metro
+metrosigns_create_paris (Enable to create Paris Metro items. true/false) bool false
+# If enabled, create items for Prague Metro
+metrosigns_create_prague (Enable to create Prague Metro items. true/false) bool false
+# If enabled, create items for Rome Metro
+metrosigns_create_rome (Enable to create Rome Metro items. true/false) bool false
+# If enabled, create items for Stockholm Metro
+metrosigns_create_stockholm (Enable to create Stockholm Metro items. true/false) bool false
+# If enabled, create items for Taipei Metro
+metrosigns_create_taipei (Enable to create Taipei Metro items. true/false) bool false
+# If enabled, create items for Tokyo Metro
+metrosigns_create_tokyo (Enable to create Tokyo Metro items. true/false) bool false
+# If enabled, create items for Toronto Subway
+metrosigns_create_toronto (Enable to create Toronto Subway items. true/false) bool false
+# If enabled, create items for Vienna U-Bahn
+metrosigns_create_vienna (Enable to create Vienna U-Bahn items. true/false) bool false

subwayblocks.lua

@@ -0,0 +1,130 @@
+---------------------------------------------------------------------------------------------------
+-- metrosigns mod for minetest by A S Lewis
+--      https://github.com/axcore/metrosigns
+--      Licence: GNU Affero GPL
+---------------------------------------------------------------------------------------------------
+-- Code/textures from advtrains_subwayblocks by gpcf/orwell
+--      https://git.gpcf.eu/?p=advtrains_subwayblocks.git
+--      Licence: GNU Affero GPL
+---------------------------------------------------------------------------------------------------
+
+---------------------------------------------------------------------------------------------------
+-- Original material from advtrains_subwayblocks by gpcf/orwell
+---------------------------------------------------------------------------------------------------
+
+if not HAVE_SUBWAYBLOCKS_FLAG
+and (metrosigns.create_all_flag or metrosigns.create_subwayblocks_flag) then
+
+    local category = "Signs from subwayblocks mod"
+    metrosigns.register_category(category)
+
+    minetest.register_node("metrosigns:sb_box_berlin", {
+        description = "Berlin U-Bahn lightbox (subwayblocks)",
+        tiles = {
+            "advtrains_subwayblocks_box_berlin_top.png",
+            "advtrains_subwayblocks_box_berlin_top.png",
+            "advtrains_subwayblocks_box_berlin_side.png",
+            "advtrains_subwayblocks_box_berlin_side.png",
+            "advtrains_subwayblocks_box_berlin_side.png",
+            "advtrains_subwayblocks_box_berlin_side.png",
+        },
+        groups = box_groups,
+        light_source = box_light_source,
+    })
+    metrosigns.register_sign(category, "metrosigns:sb_box_berlin", metrosigns.writer.box_units)
+
+    minetest.register_node("metrosigns:sb_box_london", {
+        description = "London Underground lightbox (subwayblocks)",
+        tiles = {
+            "advtrains_subwayblocks_box_london_top.png",
+            "advtrains_subwayblocks_box_london_top.png",
+            "advtrains_subwayblocks_box_london_side.png",
+            "advtrains_subwayblocks_box_london_side.png",
+            "advtrains_subwayblocks_box_london_side.png",
+            "advtrains_subwayblocks_box_london_side.png",
+        },
+        groups = box_groups,
+        light_source = box_light_source,
+    })
+    metrosigns.register_sign(category, "metrosigns:sb_box_london", metrosigns.writer.box_units)
+
+    minetest.register_node("metrosigns:sb_box_madrid", {
+        description = "Madrid Metro lightbox (subwayblocks)",
+        tiles = {
+            "advtrains_subwayblocks_box_madrid_top.png",
+            "advtrains_subwayblocks_box_madrid_top.png",
+            "advtrains_subwayblocks_box_madrid_side.png",
+            "advtrains_subwayblocks_box_madrid_side.png",
+            "advtrains_subwayblocks_box_madrid_side.png",
+            "advtrains_subwayblocks_box_madrid_side.png",
+        },
+        groups = box_groups,
+        light_source = box_light_source,
+    })
+    metrosigns.register_sign(category, "metrosigns:sb_box_madrid", metrosigns.writer.box_units)
+
+    minetest.register_node("metrosigns:sb_box_mountain", {
+        description = "Mountain Railway lightbox (subwayblocks)",
+        tiles = {
+            "advtrains_subwayblocks_box_mountain_top.png",
+            "advtrains_subwayblocks_box_mountain_top.png",
+            "advtrains_subwayblocks_box_mountain_side.png",
+            "advtrains_subwayblocks_box_mountain_side.png",
+            "advtrains_subwayblocks_box_mountain_side.png",
+            "advtrains_subwayblocks_box_mountain_side.png",
+        },
+        groups = box_groups,
+        light_source = box_light_source,
+    })
+    metrosigns.register_sign(category, "metrosigns:sb_box_mountain", metrosigns.writer.box_units)
+
+    minetest.register_node("metrosigns:sb_box_paris", {
+        description = "Paris Metro lightbox (subwayblocks)",
+        tiles = {
+            "advtrains_subwayblocks_box_paris_top.png",
+            "advtrains_subwayblocks_box_paris_top.png",
+            "advtrains_subwayblocks_box_paris_side.png",
+            "advtrains_subwayblocks_box_paris_side.png",
+            "advtrains_subwayblocks_box_paris_side.png",
+            "advtrains_subwayblocks_box_paris_side.png",
+        },
+        groups = box_groups,
+        light_source = box_light_source,
+    })
+    metrosigns.register_sign(category, "metrosigns:sb_box_paris", metrosigns.writer.box_units)
+
+    for i = 1, 10, 1 do
+
+        -- (Put signs in the right order in unified_inventory, etc)
+        if i < 10 then
+            num = "0"..i
+        else
+            num = i
+        end
+
+        minetest.register_node("metrosigns:sb_sign_line_"..num, {
+            description = "Line "..i.." sign (subwayblocks)",
+            tiles = {"advtrains_subwayblocks_sign_line_"..i..".png"},
+            inventory_image = "advtrains_subwayblocks_sign_line_"..i.."_inv.png",
+            groups = {attached_node = 1, choppy = 2, flammable = 2, oddly_breakable_by_hand = 3},
+            light_source = 12,
+            drawtype = "nodebox",
+            is_ground_content = false,
+            legacy_wallmounted = true,
+            node_box = {
+                type = "wallmounted",
+                wall_top = {-8/16, -4/16, -4/16, -7/16, 4/16, 4/16},
+                wall_bottom = {-8/16, -4/16, -4/16, -7/16, 4/16, 4/16},
+                wall_side = {-8/16, -4/16, -4/16, -7/16, 4/16, 4/16},
+            },
+            paramtype = "light",
+            paramtype2 = "wallmounted",
+            sunlight_propagates = true,
+            walkable = false
+        })
+        metrosigns.register_sign(
+            category, "metrosigns:sb_sign_line_"..num, metrosigns.writer.sign_units
+        )
+
+    end
+end