split default iron/steel into three metals

Override the default mod's iron/steel substance, replacing it with three
metals: wrought iron (pure iron), carbon steel (iron alloyed with a little
carbon), and cast iron (iron alloyed with lots of carbon).  Wrought iron
is easiest to refine, then cast iron, and carbon steel the most difficult,
matching the historical progression.  Recipes that used default steel are
changed to use one of the three, the choice of alloy for each application
being both somewhat realistic and also matching up with game progression.

The default:steel{_ingot,block} items are identified specifically with
wrought iron.  This makes the default refining recipes work appropriately.
Iron-using recipes defined outside technic are thus necessarily
reinterpreted to use wrought iron, which is mostly appropriate.
Some objects are renamed accordingly.

Rather than use the default steel textures for wrought iron, with technic
providing textures for the other two, technic now provides textures for
all three metals.  This avoids problems that would occur with texture
packs that provide default_steel_{ingot,block} textures that are not
intended to support this wrought-iron/carbon-steel/cast-iron distinction.
A texture pack can provide a distinct set of three textures specifically
for the situation where this distinction is required.

Incidentally make grinding and alloy cooking recipes work correctly when
ingredients are specified by alias.

concrete/init.lua

@@ -18,12 +18,19 @@ minetest.register_alias("technic:concrete_post33", "technic:concrete_post3")
 minetest.register_alias("technic:concrete_post34", "technic:concrete_post28")
 minetest.register_alias("technic:concrete_post35", "technic:concrete_post19")
 
+local steel_ingot
+if minetest.get_modpath("technic_worldgen") then
+	steel_ingot = "technic:carbon_steel_ingot"
+else
+	steel_ingot = "default:steel_ingot"
+end
+
 minetest.register_craft({
 	output = 'technic:rebar 6',
 	recipe = {
-		{'','', 'default:steel_ingot'},
+		{'','', steel_ingot},
-		{'','default:steel_ingot',''},
+		{'',steel_ingot,''},
-		{'default:steel_ingot', '', ''},
+		{steel_ingot, '', ''},
 	}
 })
 

notes_on_iron

@@ -0,0 +1,68 @@
+Notes on iron and steel
+=======================
+
+Alloying iron with carbon is of huge importance, but in some processes
+the alloying is an implicit side effect rather than the product of
+explicit mixing, so it is a complex area.  In the real world, there is
+a huge variety of kinds of iron and steel, differing in the proportion
+of carbon included and in other elements added to the mix.
+
+The Minetest default mod doesn't distinguish between types of iron and
+steel at all.  This mod introduces multiple types in order to get a bit
+of complexity and flavour.
+
+Leaving aside explicit addition of other elements, the iron/carbon
+spectrum is here represented by three substances: wrought iron,
+carbon steel, and cast iron.  Wrought iron has low carbon content
+(less than 0.25%), resists shattering, and is easily welded, but is
+relatively soft and susceptible to rusting.  It was used for rails,
+gates, chains, wire, pipes, fasteners, and other purposes.  Cast iron
+has high carbon content (2.1% to 4%), is especially hard, and resists
+corrosion, but is relatively brittle, and difficult to work.  It was used
+to build large structures such as bridges, and for cannons, cookware,
+and engine cylinders.  Carbon steel has medium carbon content (0.25%
+to 2.1%), and intermediate properties: moderately hard and also tough,
+somewhat resistant to corrosion.  It is now used for most of the purposes
+previously satisfied by wrought iron and many of those of cast iron,
+but has historically been especially important for its use in swords,
+armour, skyscrapers, large bridges, and machines.
+
+Historically, the first form of iron to be refined was wrought iron,
+produced from ore by a low-temperature furnace process in which the
+ore/iron remains solid and impurities (slag) are progressively removed.
+Cast iron, by contrast, was produced somewhat later by a high-temperature
+process in a blast furnace, in which the metal is melted, and carbon is
+unavoidably incorporated from the furnace's fuel.  (In fact, it's done
+in two stages, first producing pig iron from ore, and then remelting the
+pig iron to cast as cast iron.)  Carbon steel requires a more advanced
+process, in which molten pig iron is processed to remove the carbon,
+and then a controlled amount of carbon is explicitly mixed back in.
+Other processes are possible to refine iron ore and to adjust its
+carbon content.
+
+Unfortunately, Minetest doesn't let us readily distinguish between
+low-temperature and high-temperature processes: in the default game, the
+same furnace is used both to cook food (low temperature) and to cast metal
+ingots (varying high temperatures).  So we can't sensibly have wrought
+iron and cast iron produced by different types of furnace.  Nor can
+furnace recipes discriminate by which kind of fuel is used (and thus
+by the availability of carbon).  The alloy furnace allows for explicit
+alloying, which appropriately represents how carbon steel is made, but
+is not sensible for the other two, and is a relatively advanced process.
+About the only option to make a second iron-processing furnace process
+readily available is to cook multiple times; happily, this bears a slight
+resemblance to the real process with pig iron as an intermediate product.
+
+The default mod's refined iron, which it calls "steel", is identified
+with this mod's wrought iron.  Cooking an iron lump (representing ore)
+initially produces wrought iron; the cooking process here represents a
+low-temperature bloomery process.  Cooking wrought iron then produces
+cast iron; this time the cooking process represents a blast furnace.
+Alloy cooking wrought iron with coal dust (carbon) produces carbon steel;
+this represents the explicit mixing stage of carbon steel production.
+Additionally, alloy cooking carbon steel with coal dust produces cast
+iron, which is logical but not very useful.  Furthermore, to make it
+possible to turn any of the forms of iron into any other, cooking carbon
+steel or cast iron produces wrought iron, in an abbreviated form of the
+bloomery process.  As usual for metals, the same cooking and alloying
+processes can be performed in parallel forms on ingots or dust.

technic/crafts.lua

@@ -100,36 +100,36 @@ minetest.register_craft({
 minetest.register_craft({
 	output = 'technic:copper_coil 1',
 	recipe = {
-		{'technic:fine_copper_wire', 'default:steel_ingot', 'technic:fine_copper_wire'},
+		{'technic:fine_copper_wire', 'technic:wrought_iron_ingot', 'technic:fine_copper_wire'},
-		{'default:steel_ingot', '', 'default:steel_ingot'},
+		{'technic:wrought_iron_ingot', '', 'technic:wrought_iron_ingot'},
-		{'technic:fine_copper_wire', 'default:steel_ingot', 'technic:fine_copper_wire'},
+		{'technic:fine_copper_wire', 'technic:wrought_iron_ingot', 'technic:fine_copper_wire'},
 	}
 })
 
 minetest.register_craft({
 	output = 'technic:motor',
 	recipe = {
-		{'default:steel_ingot', 'technic:copper_coil', 'default:steel_ingot'},
+		{'technic:carbon_steel_ingot', 'technic:copper_coil', 'technic:carbon_steel_ingot'},
-		{'default:steel_ingot', 'technic:copper_coil', 'default:steel_ingot'},
+		{'technic:carbon_steel_ingot', 'technic:copper_coil', 'technic:carbon_steel_ingot'},
-		{'default:steel_ingot', 'default:copper_ingot', 'default:steel_ingot'},
+		{'technic:carbon_steel_ingot', 'default:copper_ingot', 'technic:carbon_steel_ingot'},
 	}
 })
 
 minetest.register_craft({
 	output = 'technic:lv_transformer',
 	recipe = {
-		{'default:iron_lump',   'default:iron_lump', 'default:iron_lump'},
+		{'technic:wrought_iron_ingot', 'technic:wrought_iron_ingot', 'technic:wrought_iron_ingot'},
-		{'technic:copper_coil', 'default:iron_lump', 'technic:copper_coil'},
+		{'technic:copper_coil',        'technic:wrought_iron_ingot', 'technic:copper_coil'},
-		{'default:iron_lump',   'default:iron_lump', 'default:iron_lump'},
+		{'technic:wrought_iron_ingot', 'technic:wrought_iron_ingot', 'technic:wrought_iron_ingot'},
 	}
 })
 
 minetest.register_craft({
 	output = 'technic:mv_transformer',
 	recipe = {
-		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
+		{'technic:carbon_steel_ingot', 'technic:carbon_steel_ingot', 'technic:carbon_steel_ingot'},
-		{'technic:copper_coil', 'default:steel_ingot', 'technic:copper_coil'},
+		{'technic:copper_coil',        'technic:carbon_steel_ingot', 'technic:copper_coil'},
-		{'default:steel_ingot', 'default:steel_ingot', 'default:steel_ingot'},
+		{'technic:carbon_steel_ingot', 'technic:carbon_steel_ingot', 'technic:carbon_steel_ingot'},
 	}
 })
 

technic/legacy.lua

@@ -24,6 +24,7 @@ technic.legacy_nodenames = {
 	["technic:mv_battery_box"] = "technic:mv_battery_box0",
 	["technic:generator"]        = "technic:lv_generator",
 	["technic:generator_active"] = "technic:lv_generator_active",
+	["technic:iron_dust"] = "technic:wrought_iron_dust",
 }
 
 for old, new in pairs(technic.legacy_nodenames) do

technic/locale/de.txt

@@ -135,7 +135,6 @@ Cobble = Pflasterstein:
 Dirt = Erde:
 Leaves = Laub:
 Sandstone = Sandstein:
-Steel = Stahl:
 Stone = Stein:
 Tree = Baumstamm:
 Wooden = Holz:
@@ -148,16 +147,18 @@ Alatro = Alatro
 Arol = Arol
 Brass = Messing
 Bronze = Bronze
+Carbon Steel = Kohlenstoffstahl
+Cast Iron = Gusseisen
 Chromium = Chrom
 Coal = Kohle
 Copper = Kupfer
 Gold = Gold
-Iron = Eisen
 Mithril = Mithril
 Silver = Silber
 Stainless Steel = Edelstahl
 Talinite = Talinite
 Tin = Zinn
+Wrought Iron = Schmiedeeisen
 Zinc = Zink
 
 ## Tools

technic/locale/es.txt

@@ -121,7 +121,6 @@ Slope Edge = Borde de Rampa
 Slope = Rampa
 Element T = Elemento T
 Cylinder = Cilindro
-Steel = Acero
 Cobble = Adoquines
 Stone = Piedra
 Brick = Ladrillo
@@ -138,16 +137,18 @@ Alatro = Alatro
 Arol = Arol
 Brass = Laton
 Bronze = Bronce
+Carbon Steel = Acero al Carbono
+Cast Iron = Hierro Fundido
 Chromium = Cromo
 Coal = Carbon
 Copper = Cobre
 Gold = Oro
-Iron = Hierro
 Mithril = Mitrilo
 Silver = Plata
 Stainless Steel = Acero Inoxidable
 Talinite = Talinita
 Tin = Estanio
+Wrought Iron = Hierro Forjado
 Zinc = Zinc
 
 ## Tools

technic/locale/it.txt

@@ -132,7 +132,6 @@ Cobble = Ciottolato
 Dirt = Terra
 Leaves = Foglie
 Sandstone = Arenaria
-Steel = Acciaio
 Stone = Pietra
 Tree = Albero
 Wooden = Legno
@@ -145,16 +144,18 @@ Alatro = Alatro
 Arol = Arol
 Brass = Ottone
 Bronze = Bronzo
+Carbon Steel = Acciaio al Carbonio
+Cast Iron = Ghisa
 Chromium = Cromo
 Coal = Carbone
 Copper = Rame
 Gold = Oro
-Iron = Ferro
 Mithril = Mithril
 Silver = Argento
 Stainless Steel = Acciaio Inossidabile
 Talinite = Talinite
 Tin = Stagno
+Wrought Iron = Ferro Battuto
 Zinc = Zinco
 
 ## Tools

technic/locale/template.txt

@@ -135,7 +135,6 @@ Cobble =
 Dirt =
 Leaves =
 Sandstone =
-Steel =
 Stone =
 Tree =
 Wooden =
@@ -148,16 +147,18 @@ Alatro =
 Arol =
 Brass =
 Bronze =
+Carbon Steel =
+Cast Iron =
 Chromium =
 Coal =
 Copper =
 Gold =
-Iron =
 Mithril =
 Silver =
 Stainless Steel =
 Talinite =
 Tin =
+Wrought Iron =
 Zinc =
 
 ## Tools

technic/machines/HV/quarry.lua

@@ -3,9 +3,9 @@ local S = technic.getter
 
 minetest.register_craft({
 	recipe = {
-		{"default:steelblock", "pipeworks:filter",           "default:steelblock"},
+		{"technic:carbon_steel_block", "pipeworks:filter",           "technic:carbon_steel_block"},
-		{"default:steelblock", "technic:motor",              "default:steelblock"},
+		{"technic:carbon_steel_block", "technic:motor",              "technic:carbon_steel_block"},
-		{"default:steelblock", "technic:diamond_drill_head", "default:steelblock"}},
+		{"technic:carbon_steel_block", "technic:diamond_drill_head", "technic:carbon_steel_block"}},
 	output = "technic:quarry",
 })
 
@@ -136,9 +136,9 @@ end
 
 minetest.register_node("technic:quarry", {
 	description = S("Quarry"),
-	tiles = {"default_steel_block.png", "default_steel_block.png",
+	tiles = {"technic_carbon_steel_block.png", "technic_carbon_steel_block.png",
-	         "default_steel_block.png", "default_steel_block.png",
+	         "technic_carbon_steel_block.png", "technic_carbon_steel_block.png",
-	         "default_steel_block.png^default_tool_mesepick.png", "default_steel_block.png"},
+	         "technic_carbon_steel_block.png^default_tool_mesepick.png", "technic_carbon_steel_block.png"},
 	paramtype2 = "facedir",
 	groups = {cracky=2, tubedevice=1},
 	tube = {

technic/machines/HV/solar_array.lua

@@ -4,9 +4,9 @@
 minetest.register_craft({
 	output = 'technic:solar_array_hv 1',
 	recipe = {
-		{'technic:solar_array_mv', 'technic:solar_array_mv',  'technic:solar_array_mv'},
+		{'technic:solar_array_mv',     'technic:solar_array_mv', 'technic:solar_array_mv'},
-		{'default:steel_ingot',    'technic:hv_transformer',  'default:steel_ingot'},
+		{'technic:carbon_steel_ingot', 'technic:hv_transformer', 'technic:carbon_steel_ingot'},
-		{'',                       'technic:hv_cable0',       ''},
+		{'',                           'technic:hv_cable0',      ''},
 	}
 })
 

technic/machines/LV/alloy_furnace.lua

@@ -4,9 +4,9 @@
 minetest.register_craft({
 	output = 'technic:lv_alloy_furnace',
 	recipe = {
-		{'default:brick',       'default:brick',        'default:brick'},
+		{'default:brick',           'default:brick',        'default:brick'},
-		{'default:brick',       '',                     'default:brick'},
+		{'default:brick',           '',                     'default:brick'},
-		{'default:steel_ingot', 'default:copper_ingot', 'default:steel_ingot'},
+		{'technic:cast_iron_ingot', 'default:copper_ingot', 'technic:cast_iron_ingot'},
 	}
 })
 

technic/machines/LV/battery_box.lua

@@ -2,9 +2,9 @@
 minetest.register_craft({
 	output = 'technic:lv_battery_box0',
 	recipe = {
-		{'technic:battery',     'group:wood',           'technic:battery'},
+		{'technic:battery',         'group:wood',              'technic:battery'},
-		{'technic:battery',     'default:copper_ingot', 'technic:battery'},
+		{'technic:battery',         'default:copper_ingot',    'technic:battery'},
-		{'default:steel_ingot', 'default:steel_ingot',  'default:steel_ingot'},
+		{'technic:cast_iron_ingot', 'technic:cast_iron_ingot', 'technic:cast_iron_ingot'},
 	}
 })
 

technic/machines/LV/cnc.lua

@@ -229,8 +229,8 @@ minetest.register_craft({
 	output = 'technic:cnc',
 	recipe = {
 		{'default:glass',              'technic:diamond_drill_head', 'default:glass'},
-		{'technic:control_logic_unit', 'technic:motor',              'default:steel_ingot'},
+		{'technic:control_logic_unit', 'technic:motor',              'technic:carbon_steel_ingot'},
-		{'default:steel_ingot',        'default:copper_ingot',       'default:steel_ingot'},         
+		{'technic:carbon_steel_ingot', 'default:copper_ingot',       'technic:carbon_steel_ingot'},         
 	},
 })
 

technic/machines/LV/cnc_nodes.lua

@@ -58,12 +58,13 @@ technic.cnc.register_all("default:tree",
                 {snappy=1, choppy=2, oddly_breakable_by_hand=2, flammable=3, wood=1, not_in_creative_inventory=1},
                 {"default_tree.png"},
                 S("Tree"))
--- STEEL
+
---------
+-- WROUGHT IRON
+---------------
 technic.cnc.register_all("default:steelblock",
                 {cracky=1, level=2, not_in_creative_inventory=1},
-                {"default_steel_block.png"},
+                {"technic_wrought_iron_block.png"},
-                S("Steel"))
+                S("Wrought Iron"))
 
 -- Bronze
 --------

technic/machines/LV/electric_furnace.lua

@@ -5,9 +5,9 @@
 minetest.register_craft({
 	output = 'technic:electric_furnace',
 	recipe = {
-		{'default:cobble',      'default:cobble',        'default:cobble'},
+		{'default:cobble',          'default:cobble',        'default:cobble'},
-		{'default:cobble',      '',                      'default:cobble'},
+		{'default:cobble',          '',                      'default:cobble'},
-		{'default:steel_ingot', 'moreores:copper_ingot', 'default:steel_ingot'},
+		{'technic:cast_iron_ingot', 'moreores:copper_ingot', 'technic:cast_iron_ingot'},
 	}
 })
 

technic/machines/LV/solar_array.lua

@@ -8,9 +8,9 @@
 minetest.register_craft({
 	output = 'technic:solar_array_lv 1',
 	recipe = {
-		{'technic:solar_panel', 'technic:solar_panel',    'technic:solar_panel'},
+		{'technic:solar_panel',        'technic:solar_panel',    'technic:solar_panel'},
-		{'default:steel_ingot', 'technic:lv_transformer', 'default:steel_ingot'},
+		{'technic:carbon_steel_ingot', 'technic:lv_transformer', 'technic:carbon_steel_ingot'},
-		{'',                    'technic:lv_cable0',      ''},
+		{'',                           'technic:lv_cable0',      ''},
 	}
 })
 

technic/machines/LV/solar_panel.lua

@@ -29,7 +29,7 @@ minetest.register_craft({
 	output = 'technic:solar_panel',
 	recipe = {
 		{'technic:doped_silicon_wafer', 'technic:doped_silicon_wafer', 'technic:doped_silicon_wafer'},
-		{'default:steel_ingot',         'technic:lv_cable0',           'default:steel_ingot'},
+		{'technic:wrought_iron_ingot',  'technic:lv_cable0',           'technic:wrought_iron_ingot'},
 
 	}
 })

technic/machines/MV/solar_array.lua

@@ -2,9 +2,9 @@
 minetest.register_craft({
 	output = 'technic:solar_array_mv 1',
 	recipe = {
-		{'technic:solar_array_lv', 'technic:solar_array_lv', 'technic:solar_array_lv'},
+		{'technic:solar_array_lv',     'technic:solar_array_lv', 'technic:solar_array_lv'},
-		{'default:steel_ingot',    'technic:mv_transformer', 'default:steel_ingot'},
+		{'technic:carbon_steel_ingot', 'technic:mv_transformer', 'technic:carbon_steel_ingot'},
-		{'',                       'technic:mv_cable0',      ''},
+		{'',                           'technic:mv_cable0',      ''},
 	}
 })
 

technic/machines/MV/wind_mill.lua

@@ -4,25 +4,25 @@ local S = technic.getter
 minetest.register_craft({
 	output = 'technic:wind_mill_frame 5',
 	recipe = {
-		{'default:steel_ingot', '',                    'default:steel_ingot'},
+		{'technic:carbon_steel_ingot', '',                           'technic:carbon_steel_ingot'},
-		{'',                    'default:steel_ingot', ''},
+		{'',                           'technic:carbon_steel_ingot', ''},
-		{'default:steel_ingot', '',                    'default:steel_ingot'},
+		{'technic:carbon_steel_ingot', '',                           'technic:carbon_steel_ingot'},
 	}
 })
 
 minetest.register_craft({
 	output = 'technic:wind_mill',
 	recipe = {
-		{'',                    'default:steel_ingot', ''},
+		{'',                           'technic:carbon_steel_ingot', ''},
-		{'default:steel_ingot', 'technic:motor',       'default:steel_ingot'},
+		{'technic:carbon_steel_ingot', 'technic:motor',              'technic:carbon_steel_ingot'},
-		{'',                    'default:steelblock',  ''},
+		{'',                           'technic:carbon_steel_block', ''},
 	}
 })
 
 minetest.register_node("technic:wind_mill_frame", {
 	description = S("Wind Mill Frame"),
 	drawtype = "glasslike_framed",
-	tiles = {"default_steel_block.png", "default_glass.png"},
+	tiles = {"technic_carbon_steel_block.png", "default_glass.png"},
 	sunlight_propagates = true,
 	groups = {cracky=3},
 	sounds = default.node_sound_stone_defaults(),
@@ -31,7 +31,7 @@ minetest.register_node("technic:wind_mill_frame", {
 
 minetest.register_node("technic:wind_mill", {
 	description = S("Wind Mill"),
-	tiles = {"default_steel_block.png"},
+	tiles = {"technic_carbon_steel_block.png"},
 	paramtype2 = "facedir",
 	groups = {cracky=1},
 	sounds = default.node_sound_stone_defaults(),

technic/machines/register/alloy_furnace.lua

@@ -45,6 +45,36 @@ technic.register_alloy_recipe = function(metal1, count1, metal2, count2, result,
 	end
 end
 
+minetest.after(0.01, function ()
+	for _, recipe in pairs(technic.alloy_recipes) do
+		local in1 = recipe.input[1]
+		local in2 = recipe.input[2]
+		local in1n = in1.name
+		local in2n = in2.name
+		while minetest.registered_aliases[in1n] do
+			in1n = minetest.registered_aliases[in1n]
+		end
+		while minetest.registered_aliases[in2n] do
+			in2n = minetest.registered_aliases[in2n]
+		end
+		if in1n > in2n then
+			local temp = in1
+			in1 = in2
+			in2 = temp
+			temp = in1n
+			in1n = in2n
+			in2n = temp
+		end
+		technic.alloy_recipes[in1n.." "..in2n] = {
+			input = {
+				{ name = in1n, count = in1.count },
+				{ name = in2n, count = in2.count },
+			},
+			output = recipe.output,
+		}
+	end
+end)
+
 -- Retrieve a recipe given the input metals.
 function technic.get_alloy_recipe(stack1, stack2)
 	-- Sort the stacks alphebetically
@@ -65,8 +95,12 @@ end
 
 technic.register_alloy_recipe("technic:copper_dust",   3, "technic:tin_dust",       1, "technic:bronze_dust",           4)
 technic.register_alloy_recipe("default:copper_ingot",  3, "moreores:tin_ingot",     1, "moreores:bronze_ingot",         4)
-technic.register_alloy_recipe("technic:iron_dust",     3, "technic:chromium_dust",  1, "technic:stainless_steel_dust",  4)
+technic.register_alloy_recipe("technic:wrought_iron_dust", 1, "technic:coal_dust",  1, "technic:carbon_steel_dust",     1)
-technic.register_alloy_recipe("default:steel_ingot",   3, "technic:chromium_ingot", 1, "technic:stainless_steel_ingot", 4)
+technic.register_alloy_recipe("technic:wrought_iron_ingot", 1, "technic:coal_dust", 1, "technic:carbon_steel_ingot",    1)
+technic.register_alloy_recipe("technic:carbon_steel_dust", 1, "technic:coal_dust",  1, "technic:cast_iron_dust",        1)
+technic.register_alloy_recipe("technic:carbon_steel_ingot", 1, "technic:coal_dust", 1, "technic:cast_iron_ingot",       1)
+technic.register_alloy_recipe("technic:carbon_steel_dust", 3, "technic:chromium_dust", 1, "technic:stainless_steel_dust", 4)
+technic.register_alloy_recipe("technic:carbon_steel_ingot", 3, "technic:chromium_ingot", 1, "technic:stainless_steel_ingot", 4)
 technic.register_alloy_recipe("technic:copper_dust",   2, "technic:zinc_dust",      1, "technic:brass_dust",            3)
 technic.register_alloy_recipe("default:copper_ingot",  2, "technic:zinc_ingot",     1, "technic:brass_ingot",           3)
 technic.register_alloy_recipe("default:sand",          2, "technic:coal_dust",      2, "technic:silicon_wafer",         1)

technic/machines/register/grinder_recipes.lua

@@ -24,6 +24,16 @@ function technic.register_grinder_recipe(data)
 	end
 end
 
+minetest.after(0.01, function ()
+	for ingredient, recipe in pairs(technic.grinder_recipes) do
+		ingredient = minetest.registered_aliases[ingredient]
+		while ingredient do
+			technic.grinder_recipes[ingredient] = recipe
+			ingredient = minetest.registered_aliases[ingredient]
+		end
+	end
+end)
+
 -- Receive an ItemStack of result by an ItemStack input
 function technic.get_grinder_recipe(itemstack)
 	return technic.grinder_recipes[itemstack:get_name()]
@@ -40,8 +50,7 @@ local recipes = {
 	{"default:gold_ingot",      "technic:gold_dust 1"},
 	{"default:gold_lump",       "technic:gold_dust 2"},
 	{"default:gravel",          "default:dirt"},
-	{"default:iron_lump",       "technic:iron_dust 2"},
+	{"default:iron_lump",       "technic:wrought_iron_dust 2"},
-	{"default:steel_ingot",     "technic:iron_dust 1"},
 	{"default:stone",           "default:sand"},
 	{"gloopores:alatro_lump",   "technic:alatro_dust 2"},
 	{"gloopores:kalite_lump",   "technic:kalite_dust 2"},
@@ -54,8 +63,11 @@ local recipes = {
 	{"moreores:silver_lump",    "technic:silver_dust 2"},
 	{"moreores:tin_ingot",      "technic:tin_dust 1"},
 	{"moreores:tin_lump",       "technic:tin_dust 2"},
+	{"technic:cast_iron_ingot", "technic:cast_iron_dust 1"},
 	{"technic:chromium_ingot",  "technic:chromium_dust 1"},
 	{"technic:chromium_lump",   "technic:chromium_dust 2"},
+	{"technic:wrought_iron_ingot", "technic:wrought_iron_dust 1"},
+	{"technic:carbon_steel_ingot", "technic:carbon_steel_dust 1"},
 	{"technic:zinc_ingot",      "technic:zinc_dust 1"},
 	{"technic:zinc_lump",       "technic:zinc_dust 2"},
 	{"technic:brass_ingot",     "technic:brass_dust 1"},
@@ -92,16 +104,18 @@ register_dust("Alatro",          "glooptest:alatro_ingot")
 register_dust("Arol",            "glooptest:arol_ingot")
 register_dust("Brass",           "technic:brass_ingot")
 register_dust("Bronze",          "default:bronze_ingot")
+register_dust("Carbon Steel",    "technic:carbon_steel_ingot")
+register_dust("Cast Iron",       "technic:cast_iron_ingot")
 register_dust("Chromium",        "technic:chromium_ingot")
 register_dust("Coal",            nil)
 register_dust("Copper",          "default:copper_ingot")
 register_dust("Gold",            "default:gold_ingot")
-register_dust("Iron",            "default:steel_ingot")
 register_dust("Mithril",         "moreores:mithril_ingot")
 register_dust("Silver",          "moreores:silver_ingot")
 register_dust("Stainless Steel", "technic:stainless_steel_ingot")
 register_dust("Talinite",        "glooptest:talinite_ingot")
 register_dust("Tin",             "moreores:tin_ingot")
+register_dust("Wrought Iron",    "technic:wrought_iron_ingot")
 register_dust("Zinc",            "technic:zinc_ingot")
 
 minetest.register_craft({

technic/machines/switching_station.lua

@@ -35,9 +35,9 @@ local S = technic.getter
 minetest.register_craft({
 	output = "technic:switching_station",
 	recipe = {
-		{"default:steel_ingot",  "technic:lv_transformer", "default:steel_ingot"},
+		{"technic:cast_iron_ingot", "technic:lv_transformer", "technic:cast_iron_ingot"},
-		{"default:copper_ingot", "technic:lv_cable0",      "default:copper_ingot"},
+		{"default:copper_ingot",    "technic:lv_cable0",      "default:copper_ingot"},
-		{"default:steel_ingot",  "technic:lv_cable0",      "default:steel_ingot"}
+		{"technic:cast_iron_ingot", "technic:lv_cable0",      "technic:cast_iron_ingot"}
 	}
 })
 

technic/tools/cans.lua

@@ -7,8 +7,8 @@ minetest.register_craft({
 	output = 'technic:water_can 1',
 	recipe = {
 		{'technic:zinc_ingot', 'technic:rubber','technic:zinc_ingot'},
-		{'default:steel_ingot', '', 'default:steel_ingot'},
+		{'technic:carbon_steel_ingot', '', 'technic:carbon_steel_ingot'},
-		{'technic:zinc_ingot', 'default:steel_ingot', 'technic:zinc_ingot'},
+		{'technic:zinc_ingot', 'technic:carbon_steel_ingot', 'technic:zinc_ingot'},
 	}
 })
 

technic/tools/mining_lasers.lua

@@ -16,25 +16,25 @@ local S = technic.getter
 minetest.register_craft({
 	output = 'technic:laser_mk1',
 	recipe = {
-		{'default:diamond', 'default:steel_ingot', 'technic:red_energy_crystal'},
+		{'default:diamond', 'technic:carbon_steel_ingot', 'technic:red_energy_crystal'},
-		{'',                'default:steel_ingot', 'default:steel_ingot'},
+		{'',                'technic:carbon_steel_ingot', 'technic:carbon_steel_ingot'},
-		{'',                '',                    'default:copper_ingot'},
+		{'',                '',                           'default:copper_ingot'},
 	}
 })
 minetest.register_craft({
 	output = 'technic:laser_mk2',
 	recipe = {
-		{'default:diamond', 'default:steel_ingot', 'technic:laser_mk1'},
+		{'default:diamond', 'technic:carbon_steel_ingot', 'technic:laser_mk1'},
-		{'',                'default:steel_ingot', 'technic:green_energy_crystal'},
+		{'',                'technic:carbon_steel_ingot', 'technic:green_energy_crystal'},
-		{'',                '',                    'default:copper_ingot'},
+		{'',                '',                           'default:copper_ingot'},
 	}
 })
 minetest.register_craft({
 	output = 'technic:laser_mk3',
 	recipe = {
-		{'default:diamond', 'default:steel_ingot', 'technic:laser_mk2'},
+		{'default:diamond', 'technic:carbon_steel_ingot', 'technic:laser_mk2'},
-		{'',                'default:steel_ingot', 'technic:blue_energy_crystal'},
+		{'',                'technic:carbon_steel_ingot', 'technic:blue_energy_crystal'},
-		{'',                '',                    'default:copper_ingot'},
+		{'',                '',                           'default:copper_ingot'},
 	}
 })
 

technic_chests/copper_chest.lua

@@ -19,7 +19,7 @@ minetest.register_craft({
 minetest.register_craft({
 	output = 'technic:copper_locked_chest 1',
 	recipe = {
-		{'default:steel_ingot'},
+		{'technic:wrought_iron_ingot'},
 		{'technic:copper_chest'},
 	}
 })

technic_chests/depends.txt

@@ -1,5 +1,6 @@
 default
 technic
+technic_worldgen
 moreores
 pipeworks
 intllib?

technic_chests/gold_chest.lua

@@ -20,7 +20,7 @@ minetest.register_craft({
 minetest.register_craft({
 	output = 'technic:gold_locked_chest',
 	recipe = {
-		{'default:steel_ingot'},
+		{'technic:wrought_iron_ingot'},
 		{'technic:gold_chest'},
 	}
 })

technic_chests/iron_chest.lua

@@ -2,25 +2,25 @@
 minetest.register_craft({
 	output = 'technic:iron_chest 1',
 	recipe = {
-		{'default:steel_ingot','default:steel_ingot','default:steel_ingot'},
+		{'technic:cast_iron_ingot','technic:cast_iron_ingot','technic:cast_iron_ingot'},
-		{'default:steel_ingot','default:chest','default:steel_ingot'},
+		{'technic:cast_iron_ingot','default:chest','technic:cast_iron_ingot'},
-		{'default:steel_ingot','default:steel_ingot','default:steel_ingot'},
+		{'technic:cast_iron_ingot','technic:cast_iron_ingot','technic:cast_iron_ingot'},
 	}
 })
 
 minetest.register_craft({
 	output = 'technic:iron_locked_chest 1',
 	recipe = {
-		{'default:steel_ingot','default:steel_ingot','default:steel_ingot'},
+		{'technic:cast_iron_ingot','technic:cast_iron_ingot','technic:cast_iron_ingot'},
-		{'default:steel_ingot','default:chest_locked','default:steel_ingot'},
+		{'technic:cast_iron_ingot','default:chest_locked','technic:cast_iron_ingot'},
-		{'default:steel_ingot','default:steel_ingot','default:steel_ingot'},
+		{'technic:cast_iron_ingot','technic:cast_iron_ingot','technic:cast_iron_ingot'},
 	}
 })
 
 minetest.register_craft({
 	output = 'technic:iron_locked_chest 1',
 	recipe = {
-		{'default:steel_ingot'},
+		{'technic:wrought_iron_ingot'},
 		{'technic:iron_chest'},
 	}
 })

technic_chests/mithril_chest.lua

@@ -19,7 +19,7 @@ minetest.register_craft({
 minetest.register_craft({
 	output = 'technic:mithril_locked_chest 1',
 	recipe = {
-		{'default:steel_ingot'},
+		{'technic:wrought_iron_ingot'},
 		{'technic:mithril_chest'},
 	}
 })

technic_chests/silver_chest.lua

@@ -19,7 +19,7 @@ minetest.register_craft({
 minetest.register_craft({
 	output = 'technic:silver_locked_chest',
 	recipe = {
-		{'default:steel_ingot'},
+		{'technic:wrought_iron_ingot'},
 		{'technic:silver_chest'},
 	}
 })

technic_worldgen/crafts.lua

@@ -34,6 +34,23 @@ minetest.register_craftitem(":technic:brass_ingot", {
 	inventory_image = "technic_brass_ingot.png",
 })
 
+minetest.register_alias("technic:wrought_iron_ingot", "default:steel_ingot")
+
+minetest.override_item("default:steel_ingot", {
+	description = S("Wrought Iron Ingot"),
+	inventory_image = "technic_wrought_iron_ingot.png",
+})
+
+minetest.register_craftitem(":technic:cast_iron_ingot", {
+	description = S("Cast Iron Ingot"),
+	inventory_image = "technic_cast_iron_ingot.png",
+})
+
+minetest.register_craftitem(":technic:carbon_steel_ingot", {
+	description = S("Carbon Steel Ingot"),
+	inventory_image = "technic_carbon_steel_ingot.png",
+})
+
 minetest.register_craftitem(":technic:stainless_steel_ingot", {
 	description = S("Stainless Steel Ingot"),
 	inventory_image = "technic_stainless_steel_ingot.png",
@@ -61,6 +78,8 @@ register_block("technic:uranium_block", "technic:uranium")
 register_block("technic:chromium_block", "technic:chromium_ingot")
 register_block("technic:zinc_block", "technic:zinc_ingot")
 register_block("technic:brass_block", "technic:brass_ingot")
+register_block("technic:cast_iron_block", "technic:cast_iron_ingot")
+register_block("technic:carbon_steel_block", "technic:carbon_steel_ingot")
 register_block("technic:stainless_steel_block", "technic:stainless_steel_ingot")
 
 minetest.register_craft({
@@ -75,3 +94,59 @@ minetest.register_craft({
 	output = "technic:chromium_ingot",
 })
 
+minetest.register_craft({
+	type = 'cooking',
+	recipe = minetest.registered_aliases["technic:wrought_iron_ingot"],
+	output = "technic:cast_iron_ingot",
+})
+
+minetest.register_craft({
+	type = 'cooking',
+	recipe = "technic:cast_iron_ingot",
+	cooktime = 2,
+	output = "technic:wrought_iron_ingot",
+})
+
+minetest.register_craft({
+	type = 'cooking',
+	recipe = "technic:carbon_steel_ingot",
+	cooktime = 2,
+	output = "technic:wrought_iron_ingot",
+})
+
+local function for_each_registered_craftitem(action)
+	local already_reg = {}
+	for k, _ in pairs(minetest.registered_items) do
+		table.insert(already_reg, k)
+	end
+	local really_register_craftitem = minetest.register_craftitem
+	minetest.register_craftitem = function(name, def)
+		really_register_craftitem(name, def)
+		action(string.gsub(name, "^:", ""))
+	end
+	for _, name in ipairs(already_reg) do
+		action(name)
+	end
+end
+
+local steel_to_iron = {}
+for _, i in ipairs({
+	"default:axe_steel",
+	"default:pick_steel",
+	"default:shovel_steel",
+	"default:sword_steel",
+	"doors:door_steel",
+	"farming:hoe_steel",
+	"mesecons_doors:op_door_steel",
+	"mesecons_doors:sig_door_steel",
+	"vessels:steel_bottle",
+}) do
+	steel_to_iron[i] = true
+end
+
+for_each_registered_craftitem(function(item_name)
+	local item_def = minetest.registered_items[item_name]
+	if steel_to_iron[item_name] and string.find(item_def.description, "Steel") then
+		minetest.override_item(item_name, { description = string.gsub(item_def.description, "Steel", S("Iron")) })
+	end
+end)

technic_worldgen/locale/de.txt

@@ -9,7 +9,11 @@ Chromium Ingot = Chrombarren
 Zinc Lump = Zinkklumpen
 Zinc Ingot = Zinkbarren
 Brass Ingot = Messingbarren
+Wrought Iron Ingot = Schmiedeeisenbarren
+Cast Iron Ingot = Gusseisenbarren
+Carbon Steel Ingot = Kohlenstoffstahlbarren
 Stainless Steel Ingot = Edelstahlbarren
+Iron = Eisen
 
 ## nodes.lua
 Uranium Ore = Uranerz
@@ -21,8 +25,12 @@ Marble Bricks = Marmorziegel
 Uranium Block = Uranblock
 Chromium Block = Chromblock
 Zinc Block = Zinkblock
+Wrought Iron Block = Schmiedeeisenblock
+Cast Iron Block = Gusseisenblock
+Carbon Steel Block = Kohlenstoffstahlblock
 Stainless Steel Block = Edelstahlblock
 Brass Block = Messingblock
+Wrought Iron = Schmiedeeisen
 
 ## rubber.lua
 Rubber Tree Sapling = Gummibaumsetzling

technic_worldgen/locale/template.txt

@@ -8,7 +8,11 @@ Chromium Ingot =
 Zinc Lump = 
 Zinc Ingot = 
 Brass Ingot = 
+Wrought Iron Ingot =
+Cast Iron Ingot =
+Carbon Steel Ingot =
 Stainless Steel Ingot = 
+Iron =
 
 ###nodes.lua
 Uranium Ore = 
@@ -20,8 +24,12 @@ Marble Bricks =
 Uranium Block = 
 Chromium Block = 
 Zinc Block = 
+Wrought Iron Block =
+Cast Iron Block =
+Carbon Steel Block =
 Stainless Steel Block = 
 Brass Block = 
+Wrought Iron =
 
 ###rubber.lua
 Rubber Tree Sapling = 

technic_worldgen/nodes.lua

@@ -76,6 +76,29 @@ minetest.register_node(":technic:zinc_block", {
 	sounds = default.node_sound_stone_defaults()
 })
 
+minetest.register_alias("technic:wrought_iron_block", "default:steelblock")
+
+minetest.override_item("default:steelblock", {
+	description = S("Wrought Iron Block"),
+	tiles = { "technic_wrought_iron_block.png" },
+})
+
+minetest.register_node(":technic:cast_iron_block", {
+	description = S("Cast Iron Block"),
+	tiles = { "technic_cast_iron_block.png" },
+	is_ground_content = true,
+	groups = {cracky=1, level=2},
+	sounds = default.node_sound_stone_defaults()
+})
+
+minetest.register_node(":technic:carbon_steel_block", {
+	description = S("Carbon Steel Block"),
+	tiles = { "technic_carbon_steel_block.png" },
+	is_ground_content = true,
+	groups = {cracky=1, level=2},
+	sounds = default.node_sound_stone_defaults()
+})
+
 minetest.register_node(":technic:stainless_steel_block", {
 	description = S("Stainless Steel Block"),
 	tiles = { "technic_stainless_steel_block.png" },
@@ -104,3 +127,37 @@ minetest.register_alias("technic:diamond_block", "default:diamondblock")
 minetest.register_alias("technic:diamond", "default:diamond")
 minetest.register_alias("technic:mineral_diamond", "default:stone_with_diamond")
 
+local function for_each_registered_node(action)
+	local already_reg = {}
+	for k, _ in pairs(minetest.registered_nodes) do
+		table.insert(already_reg, k)
+	end
+	local really_register_node = minetest.register_node
+	minetest.register_node = function(name, def)
+		really_register_node(name, def)
+		action(string.gsub(name, "^:", ""))
+	end
+	for _, name in ipairs(already_reg) do
+		action(name)
+	end
+end
+
+for_each_registered_node(function(node_name)
+	local node_def = minetest.registered_nodes[node_name]
+	if node_name ~= "default:steelblock" and string.find(node_name, "steelblock") and string.find(node_def.description, "Steel") then
+		minetest.override_item(node_name, { description = string.gsub(node_def.description, "Steel", S("Wrought Iron")) })
+	end
+	if node_def.tiles or node_def.tile_images then
+		local tn = node_def.tiles and "tiles" or "tile_images"
+		local tl = {}
+		local ca = false
+		for i, t in ipairs(node_def[tn]) do
+			if type(t) == "string" and t == "default_steel_block.png" then
+				ca = true
+				t = "technic_wrought_iron_block.png"
+			end
+			table.insert(tl, t)
+		end
+		if ca then minetest.override_item(node_name, { [tn] = tl }) end
+	end
+end)

wrench/depends.txt

@@ -1,5 +1,6 @@
 default
 technic
 technic_chests
+technic_worldgen
 intllib?
 

wrench/init.lua

@@ -165,8 +165,8 @@ minetest.register_tool("wrench:wrench", {
 minetest.register_craft({
 	output = "wrench:wrench",
 	recipe = {
-		{"default:steel_ingot", "",                    "default:steel_ingot"},
+		{"technic:carbon_steel_ingot", "",                           "technic:carbon_steel_ingot"},
-		{"",                    "default:steel_ingot", ""},
+		{"",                           "technic:carbon_steel_ingot", ""},
-		{"",                    "default:steel_ingot", ""},
+		{"",                           "technic:carbon_steel_ingot", ""},
 	},
 })