register some nodes to the letters mod

.luacheckrc

@@ -21,6 +21,6 @@ read_globals = {
 	"screwdriver",
 	"minetest",
 	"mesecon",
-	"unifieddyes"
-
+	"unifieddyes",
+	"letters"
 }

init.lua

@@ -32,3 +32,8 @@ dofile(MP.."/models.lua")
 dofile(MP.."/octagon_panes.lua")
 dofile(MP.."/forcefield.lua")
 dofile(MP.."/crafts.lua")
+
+if minetest.get_modpath("letters") then
+	-- register letter nodes
+	dofile(MP.."/letters.lua")
+end

letters.lua

@@ -0,0 +1,5 @@
+letters.register_letters("scifi_nodes", "black", "scifi_nodes:black", "Black wall", "scifi_nodes_black.png")
+letters.register_letters("scifi_nodes", "white2", "scifi_nodes:white2", "Plastic", "scifi_nodes_white2.png")
+letters.register_letters("scifi_nodes", "purple", "scifi_nodes:purple", "Purple node", "scifi_nodes_purple.png")
+letters.register_letters("scifi_nodes", "bluemetal", "scifi_nodes:bluemetal", "Blue metal", "scifi_nodes_bluemetal.png")
+letters.register_letters("scifi_nodes", "greenmetal", "scifi_nodes:greenmetal", "Green metal", "scifi_nodes_greenmetal.png")

mod.conf

@@ -11,5 +11,6 @@ mesecons_torch,
 mesecons_receiver,
 basic_materials,
 dye,
-unifieddyes
+unifieddyes,
+letters
 """

nodeboxes.lua

@@ -543,7 +543,6 @@ minetest.register_node("scifi_nodes:lightbars", {
 	},
 	drawtype = "nodebox",
 	paramtype = "light",
-	paramtype2 = "facedir",
 	use_texture_alpha = "blend",
 	light_source = minetest.LIGHT_MAX,
 	node_box = {
@@ -570,7 +569,6 @@ tiles = {{
 	drawtype = "nodebox",
 	sunlight_propagates = true,
 	paramtype = "light",
-	paramtype2 = "facedir",
 	node_box = {
 		type = "fixed",
 		fixed = {
@@ -591,7 +589,6 @@ tiles = {
 	drawtype = "nodebox",
 	sunlight_propagates = true,
 	paramtype = "light",
-	paramtype2 = "facedir",
 	node_box = {
 		type = "fixed",
 		fixed = {