I have no idea what I'm doing.

make colored metal signs optional (default to enabled)

description.txt

@@ -0,0 +1 @@
+Adds signs with readable text.

init.lua

@@ -9,6 +9,8 @@
 --		{ delta = {entity position for 270° yaw}, exact yaw expression }
 --		{ delta = {entity position for 90° yaw}, exact yaw expression }
 -- }
+-- Made colored metal signs optionals
+local enable_colored_metal_signs = true
 
 -- CWz's keyword interact mod uses this setting.
 local current_keyword = minetest.setting_get("interact_keyword") or "iaccept"
@@ -31,6 +33,8 @@ end
 
 signs_lib.modpath = minetest.get_modpath("signs_lib")
 
+local DEFAULT_TEXT_SCALE = {x=0.8, y=0.5}
+
 signs_lib.regular_wall_sign_model = {
 	nodebox = {
 		type = "wallmounted",
@@ -41,10 +45,10 @@ signs_lib.regular_wall_sign_model = {
 	textpos = {
 		nil,
 		nil,
-		{delta = {x =  0.43,  y = 0.07, z =  0     }, yaw = math.pi / -2},
-		{delta = {x = -0.43,  y = 0.07, z =  0     }, yaw = math.pi / 2},
-		{delta = {x =  0,     y = 0.07, z =  0.43  }, yaw = 0},
-		{delta = {x =  0,     y = 0.07, z = -0.43  }, yaw = math.pi},
+		{delta = { x =  0.41, y = 0.07, z =  0    }, yaw = math.pi / -2},
+		{delta = { x = -0.41, y = 0.07, z =  0    }, yaw = math.pi / 2},
+		{delta = { x =  0,    y = 0.07, z =  0.41 }, yaw = 0},
+		{delta = { x =  0,    y = 0.07, z = -0.41 }, yaw = math.pi},
 	}
 }
 
@@ -54,10 +58,10 @@ signs_lib.metal_wall_sign_model = {
 		fixed = {-0.4375, -0.25, 0.4375, 0.4375, 0.375, 0.5}
 	},
 	textpos = {
-		{delta = {x =  0,     y = 0.07, z =  0.43  }, yaw = 0},
-		{delta = {x =  0.43,  y = 0.07, z =  0     }, yaw = math.pi / -2},
-		{delta = {x =  0,     y = 0.07, z = -0.43  }, yaw = math.pi},
-		{delta = {x = -0.43,  y = 0.07, z =  0     }, yaw = math.pi / 2},
+		{delta = { x =  0,     y = 0.07, z =  0.41 }, yaw = 0},
+		{delta = { x =  0.41,  y = 0.07, z =  0    }, yaw = math.pi / -2},
+		{delta = { x =  0,     y = 0.07, z = -0.41 }, yaw = math.pi},
+		{delta = { x = -0.41,  y = 0.07, z =  0    }, yaw = math.pi / 2},
 	}
 }
 
@@ -70,10 +74,10 @@ signs_lib.yard_sign_model = {
 		}
 	},
 	textpos = {
-		{delta = {x =  0,      y = 0.07, z = -0.068}, yaw = 0},
-		{delta = {x = -0.068,  y = 0.07, z =  0    }, yaw = math.pi / -2},
-		{delta = {x =  0,      y = 0.07, z =  0.068}, yaw = math.pi},
-		{delta = {x =  0.068,  y = 0.07, z =  0    }, yaw = math.pi / 2},
+		{delta = { x =  0,    y = 0.07, z = -0.08 }, yaw = 0},
+		{delta = { x = -0.08, y = 0.07, z =  0    }, yaw = math.pi / -2},
+		{delta = { x =  0,    y = 0.07, z =  0.08 }, yaw = math.pi},
+		{delta = { x =  0.08, y = 0.07, z =  0    }, yaw = math.pi / 2},
 	}
 }
 
@@ -86,10 +90,10 @@ signs_lib.hanging_sign_model = {
 		}
 	},
 	textpos = {
-		{delta = {x =  0,      y = -0.02, z = -0.063}, yaw = 0},
-		{delta = {x = -0.063,  y = -0.02, z =  0    }, yaw = math.pi / -2},
-		{delta = {x =  0,      y = -0.02, z =  0.063}, yaw = math.pi},
-		{delta = {x =  0.063,  y = -0.02, z =  0    }, yaw = math.pi / 2},
+		{delta = { x =  0,    y = -0.02, z = -0.08 }, yaw = 0},
+		{delta = { x = -0.08, y = -0.02, z =  0    }, yaw = math.pi / -2},
+		{delta = { x =  0,    y = -0.02, z =  0.08 }, yaw = math.pi},
+		{delta = { x =  0.08, y = -0.02, z =  0    }, yaw = math.pi / 2},
 	}
 }
 
@@ -102,10 +106,10 @@ signs_lib.sign_post_model = {
 		}
 	},
 	textpos = {
-		{delta = {x = 0,      y = 0.07, z = -0.188}, yaw = 0},
-		{delta = {x = -0.188, y = 0.07, z = 0     }, yaw = math.pi / -2},
-		{delta = {x = 0,      y = 0.07, z = 0.188 }, yaw = math.pi},
-		{delta = {x = 0.188,  y = 0.07, z = 0     }, yaw = math.pi / 2},
+		{delta = { x = 0,    y = 0.07, z = -0.2 }, yaw = 0},
+		{delta = { x = -0.2, y = 0.07, z = 0    }, yaw = math.pi / -2},
+		{delta = { x = 0,    y = 0.07, z = 0.2  }, yaw = math.pi},
+		{delta = { x = 0.2,  y = 0.07, z = 0    }, yaw = math.pi / 2},
 	}
 }
 
@@ -117,6 +121,7 @@ signs_lib.gettext = S
 
 signs_lib.sign_node_list = {
 	"default:sign_wall_wood",
+	"default:sign_wall_steel",
 	"signs:sign_yard",
 	"signs:sign_hanging",
 	"signs:sign_wall_green",
@@ -141,6 +146,9 @@ else
 	default_sign_image = "default_sign_wall.png"
 end
 
+default_sign_metal = "default:sign_wall_steel"
+default_sign_metal_image = "default_sign_steel.png"
+
 --table copy
 
 function signs_lib.table_copy(t)
@@ -157,7 +165,7 @@ end
 
 -- infinite stacks
 
-if minetest.get_modpath("unified_inventory") or not minetest.setting_getbool("creative_mode") then
+if not minetest.setting_getbool("creative_mode") then
 	signs_lib.expect_infinite_stacks = false
 else
 	signs_lib.expect_infinite_stacks = true
@@ -176,8 +184,6 @@ local FONT_FMT_SIMPLE = "hdf_%02x.png"
 -- Path to the textures.
 local TP = MP.."/textures"
 
-local TEXT_SCALE = {x=0.8, y=0.5}
-
 -- Lots of overkill here. KISS advocates, go away, shoo! ;) -- kaeza
 
 local PNG_HDR = string.char(0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A)
@@ -301,14 +307,16 @@ local function fill_line(x, y, w, c)
 	return table.concat(tex)
 end
 
-local function make_line_texture(line, lineno)
+local function make_line_texture(line, lineno, pos)
 
 	local width = 0
 	local maxw = 0
 
 	local words = { }
+	local n = minetest.registered_nodes[minetest.get_node(pos).name]
+	local default_color = n.default_color or 0
 
-	local cur_color = 0
+	local cur_color = tonumber(default_color, 16)
 
 	-- We check which chars are available here.
 	for word_i, word in ipairs(line) do
@@ -389,12 +397,12 @@ local function make_line_texture(line, lineno)
 	return table.concat(texture), lineno
 end
 
-local function make_sign_texture(lines)
+local function make_sign_texture(lines, pos)
 	local texture = { ("[combine:%dx%d"):format(SIGN_WIDTH, LINE_HEIGHT * NUMBER_OF_LINES) }
 	local lineno = 0
 	for i = 1, #lines do
 		if lineno >= NUMBER_OF_LINES then break end
-		local linetex, ln = make_line_texture(lines[i], lineno)
+		local linetex, ln = make_line_texture(lines[i], lineno, pos)
 		table.insert(texture, linetex)
 		lineno = ln + 1
 	end
@@ -402,11 +410,13 @@ local function make_sign_texture(lines)
 	return table.concat(texture, "")
 end
 
-local function set_obj_text(obj, text, new)
+local function set_obj_text(obj, text, new, pos)
 	local split = new and split_lines_and_words or split_lines_and_words_old
+	local n = minetest.registered_nodes[minetest.get_node(pos).name]
+	local text_scale = n.text_scale or DEFAULT_TEXT_SCALE
 	obj:set_properties({
-		textures={make_sign_texture(split(text))},
-		visual_size = TEXT_SCALE,
+		textures={make_sign_texture(split(text), pos)},
+		visual_size = text_scale,
 	})
 end
 
@@ -488,31 +498,27 @@ signs_lib.update_sign = function(pos, fields, owner)
 	local text = meta:get_string("text")
 	if text == nil then return end
 	local objects = minetest.get_objects_inside_radius(pos, 0.5)
-	local found
 	for _, v in ipairs(objects) do
 		local e = v:get_luaentity()
 		if e and e.name == "signs:text" then
-			if found then
 			v:remove()
-			else
-				set_obj_text(v, text, new)
-				found = true
 		end
 	end
-	end
-	if found then
-		return
-	end
 
 	-- if there is no entity
 	local sign_info
 	local signnode = minetest.get_node(pos)
-	if signnode.name == "signs:sign_yard" then
+	local signname = signnode.name
+	local textpos = minetest.registered_nodes[signname].textpos
+	if textpos then
+		sign_info = textpos[minetest.get_node(pos).param2 + 1]
+	elseif signnode.name == "signs:sign_yard" then
 		sign_info = signs_lib.yard_sign_model.textpos[minetest.get_node(pos).param2 + 1]
 	elseif signnode.name == "signs:sign_hanging" then
 		sign_info = signs_lib.hanging_sign_model.textpos[minetest.get_node(pos).param2 + 1]
 	elseif string.find(signnode.name, "sign_wall") then
 		if signnode.name == default_sign
+		  or signnode.name == default_sign_metal
 		  or signnode.name == "locked_sign:sign_wall_locked" then
 			sign_info = signs_lib.regular_wall_sign_model.textpos[minetest.get_node(pos).param2 + 1]
 		else
@@ -557,7 +563,7 @@ function signs_lib.determine_sign_type(itemstack, placer, pointed_thing, locked)
 	local node=minetest.get_node(pointed_thing.under)
 
 	if minetest.registered_nodes[node.name] and minetest.registered_nodes[node.name].on_rightclick then
-		return minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer, itemstack)
+		return minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer, itemstack, pointed_thing)
 	else
 		local above = pointed_thing.above
 		local under = pointed_thing.under
@@ -577,7 +583,6 @@ function signs_lib.determine_sign_type(itemstack, placer, pointed_thing, locked)
 		end
 
 		local fdir = minetest.dir_to_facedir(dir)
-
 		local pt_name = minetest.get_node(under).name
 		local signname = itemstack:get_name()
 
@@ -587,8 +592,11 @@ function signs_lib.determine_sign_type(itemstack, placer, pointed_thing, locked)
 			minetest.add_node(above, {name = "signs:sign_hanging", param2 = fdir})
 		elseif wdir == 1 and signname == default_sign then
 			minetest.add_node(above, {name = "signs:sign_yard", param2 = fdir})
+		elseif signname == default_sign_metal then
+			minetest.add_node(above, {name = signname, param2 = wdir })
 		elseif signname ~= default_sign
-		  and signname ~= "locked_sign:sign_wall_locked" then -- it's a metal wall sign.
+		  and signname ~= default_sign_metal
+		  and signname ~= "locked_sign:sign_wall_locked" then -- it's a signs_lib colored metal wall sign.
 			minetest.add_node(above, {name = signname, param2 = fdir})
 		else -- it must be a default or locked wooden wall sign
 			minetest.add_node(above, {name = signname, param2 = wdir }) -- note it's wallmounted here!
@@ -793,11 +801,47 @@ minetest.register_node(":locked_sign:sign_wall_locked", {
 	on_rotate = signs_lib.wallmounted_rotate
 })
 
+-- default metal sign, if defined
+
+if minetest.registered_nodes["default:sign_wall_steel"] then
+	minetest.register_node(":"..default_sign_metal, {
+		description = S("Sign"),
+		inventory_image = default_sign_metal_image,
+		wield_image = default_sign_metal_image,
+		node_placement_prediction = "",
+		sunlight_propagates = true,
+		paramtype = "light",
+		paramtype2 = "wallmounted",
+		drawtype = "nodebox",
+		node_box = signs_lib.regular_wall_sign_model.nodebox,
+		tiles = {"signs_wall_sign_metal.png"},
+		groups = sign_groups,
+
+		on_place = function(itemstack, placer, pointed_thing)
+			return signs_lib.determine_sign_type(itemstack, placer, pointed_thing)
+		end,
+		on_construct = function(pos)
+			signs_lib.construct_sign(pos)
+		end,
+		on_destruct = function(pos)
+			signs_lib.destruct_sign(pos)
+		end,
+		on_receive_fields = function(pos, formname, fields, sender)
+			signs_lib.receive_fields(pos, formname, fields, sender)
+		end,
+		on_punch = function(pos, node, puncher)
+			signs_lib.update_sign(pos)
+		end,
+		on_rotate = signs_lib.wallmounted_rotate
+	})
+end
+
 -- metal, colored signs
-
+if enable_colored_metal_signs then
 	local sign_colors = { "green", "yellow", "red", "white_red", "white_black", "orange", "blue", "brown" }
+	local sign_default_text_colors = { "f", "0", "f", "4", "0", "0", "f", "f" }
 
-for _, color in ipairs(sign_colors) do
+	for i, color in ipairs(sign_colors) do
 		minetest.register_node(":signs:sign_wall_"..color, {
 			description = S("Sign ("..color..", metal)"),
 			inventory_image = "signs_"..color.."_inv.png",
@@ -816,6 +860,7 @@ for _, color in ipairs(sign_colors) do
 				"signs_metal_back.png",
 				"signs_"..color.."_front.png"
 			},
+			default_color = sign_default_text_colors[i],
 			groups = sign_groups,
 			on_place = function(itemstack, placer, pointed_thing)
 				return signs_lib.determine_sign_type(itemstack, placer, pointed_thing)
@@ -834,16 +879,18 @@ for _, color in ipairs(sign_colors) do
 			end,
 		})
 	end
+end
 
 local signs_text_on_activate
 
 signs_text_on_activate = function(self)
-	local meta = minetest.get_meta(self.object:getpos())
+	local pos = self.object:getpos()
+	local meta = minetest.get_meta(pos)
 	local text = meta:get_string("text")
 	local new = (meta:get_int("__signslib_new_format") ~= 0)
 	if text then
 		text = trim_input(text)
-		set_obj_text(self.object, text, new)
+		set_obj_text(self.object, text, new, pos)
 	end
 end
 
@@ -887,7 +934,7 @@ function signs_lib.register_fence_with_sign(fencename, fencewithsignname)
 		end
 
 		if def_under and def_under.on_rightclick then
-			return def_under.on_rightclick(pointed_thing.under, node_under, placer, itemstack) or itemstack
+			return def_under.on_rightclick(pointed_thing.under, node_under, placer, itemstack, pointed_thing) or itemstack
 		elseif def_under and def_under.buildable_to then
 			minetest.add_node(pointed_thing.under, {name = fencename, param2 = fdir})
 			if not signs_lib.expect_infinite_stacks then
@@ -924,7 +971,7 @@ function signs_lib.register_fence_with_sign(fencename, fencewithsignname)
 	minetest.register_node(":"..fencename, def)
 	minetest.register_node(":"..fencewithsignname, def_sign)
 	table.insert(signs_lib.sign_node_list, fencewithsignname)
-	minetest.log("debug", S("Registered %s and %s"):format(fencename, fencewithsignname))
+	minetest.log("verbose", S("Registered %s and %s"):format(fencename, fencewithsignname))
 end
 
 build_char_db()
@@ -934,13 +981,15 @@ minetest.register_alias("sign_wall_locked", "locked_sign:sign_wall_locked")
 
 signs_lib.register_fence_with_sign("default:fence_wood", "signs:sign_post")
 
--- restore signs' text after /clearobjects and the like
+-- restore signs' text after /clearobjects and the like, the next time
+-- a block is reloaded by the server.
 
-minetest.register_abm({
+minetest.register_lbm({
 	nodenames = signs_lib.sign_node_list,
-	interval = 15,
-	chance = 1,
-	action = function(pos, node, active_object_count, active_object_count_wider)
+	name = "signs_lib:restore_sign_text",
+	label = "Restore sign text",
+	run_at_every_load = true,
+	action = function(pos, node)
 		signs_lib.update_sign(pos)
 	end
 })
@@ -956,7 +1005,7 @@ minetest.register_craft({
 	}
 })
 
---Alternate recipe.
+--Alternate recipe
 
 minetest.register_craft({
     	output = "locked_sign:sign_wall_locked",
@@ -967,12 +1016,13 @@ minetest.register_craft({
 })
 
 -- craft recipes for the metal signs
+if enable_colored_metal_signs then
 
 	minetest.register_craft( {
-        output = "signs:sign_wall_green 4",
+		output = "signs:sign_wall_green",
 		recipe = {
 				{ "dye:dark_green", "dye:white", "dye:dark_green" },
-			{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
+				{ "", default_sign_metal, "" }
 		},
 	})
 
@@ -985,10 +1035,10 @@ minetest.register_craft( {
 	})
 
 	minetest.register_craft( {
-        output = "signs:sign_wall_yellow 4",
+		output = "signs:sign_wall_yellow",
 		recipe = {
 				{ "dye:yellow", "dye:black", "dye:yellow" },
-			{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
+				{ "", default_sign_metal, "" }
 		},
 	})
 
@@ -1001,10 +1051,10 @@ minetest.register_craft( {
 	})
 
 	minetest.register_craft( {
-        output = "signs:sign_wall_red 4",
+		output = "signs:sign_wall_red",
 		recipe = {
 				{ "dye:red", "dye:white", "dye:red" },
-			{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
+				{ "", default_sign_metal, "" }
 		},
 	})
 
@@ -1017,10 +1067,10 @@ minetest.register_craft( {
 	})
 
 	minetest.register_craft( {
-        output = "signs:sign_wall_white_red 4",
+		output = "signs:sign_wall_white_red",
 		recipe = {
 				{ "dye:white", "dye:red", "dye:white" },
-			{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
+				{ "", default_sign_metal, "" }
 		},
 	})
 
@@ -1033,10 +1083,10 @@ minetest.register_craft( {
 	})
 
 	minetest.register_craft( {
-        output = "signs:sign_wall_white_black 4",
+		output = "signs:sign_wall_white_black",
 		recipe = {
 				{ "dye:white", "dye:black", "dye:white" },
-			{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
+				{ "", default_sign_metal, "" }
 		},
 	})
 
@@ -1049,10 +1099,10 @@ minetest.register_craft( {
 	})
 
 	minetest.register_craft( {
-        output = "signs:sign_wall_orange 4",
+		output = "signs:sign_wall_orange",
 		recipe = {
 				{ "dye:orange", "dye:black", "dye:orange" },
-			{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
+				{ "", default_sign_metal, "" }
 		},
 	})
 
@@ -1065,10 +1115,10 @@ minetest.register_craft( {
 	})
 
 	minetest.register_craft( {
-        output = "signs:sign_wall_blue 4",
+		output = "signs:sign_wall_blue",
 		recipe = {
 				{ "dye:blue", "dye:white", "dye:blue" },
-			{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
+				{ "", default_sign_metal, "" }
 		},
 	})
 
@@ -1081,10 +1131,10 @@ minetest.register_craft( {
 	})
 
 	minetest.register_craft( {
-        output = "signs:sign_wall_brown 4",
+		output = "signs:sign_wall_brown",
 		recipe = {
 				{ "dye:brown", "dye:white", "dye:brown" },
-			{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
+				{ "", default_sign_metal, "" }
 		},
 	})
 
@@ -1095,6 +1145,7 @@ minetest.register_craft( {
 				{ "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
 		},
 	})
+end
 
 if minetest.setting_get("log_mods") then
 	minetest.log("action", S("signs loaded"))

mod.conf

@@ -0,0 +1 @@
+name = signs_lib