signs_api support and various large banner registrations

.luacheckrc

@@ -18,6 +18,7 @@ read_globals = {
 	"mesecon",
 	"unifieddyes",
 	"letters",
+	"signs_api",
 	"stealthnode",
 	"slats",
 	"mtt"

mod.conf

@@ -16,5 +16,6 @@ unifieddyes,
 letters,
 mesecons_stealthnode,
 mtt,
-slats
+slats,
+signs_api
 """

nodes.json

@@ -8,7 +8,9 @@
     "white2": {
         "description": "plastic",
         "colorable": true,
-        "sounds": "stone"
+        "sounds": "stone",
+        "signs_banner": true,
+        "signs_banner_color": "#000"
     },
     "super_white": {
         "description": "Super Plastic",
@@ -68,7 +70,8 @@
         "description": "metal mesh"
     },
     "black": {
-        "description": "black wall"
+        "description": "black wall",
+        "signs_banner": true
     },
     "blackoct": {
         "description": "black octagon"
@@ -89,7 +92,8 @@
         "description": "blue bars"
     },
     "bluemetal": {
-        "description": "blue metal"
+        "description": "blue metal",
+        "signs_banner": true
     },
     "bluetile": {
         "description": "blue tile",
@@ -148,7 +152,8 @@
         "colorable": true
     },
     "greenmetal": {
-        "description": "green metal wall"
+        "description": "green metal wall",
+        "signs_banner": true
     },
     "greenmetal2": {
         "description": "green metal wall2"
@@ -172,7 +177,8 @@
         "description": "green pipes"
     },
     "grey": {
-        "description": "grey wall"
+        "description": "grey wall",
+        "signs_banner": true
     },
     "greybolts": {
         "description": "grey wall bolts"
@@ -276,7 +282,8 @@
         "slat": true
     },
     "purple": {
-        "description": "Purple node"
+        "description": "Purple node",
+        "signs_banner": true
     },
     "rock": {
         "description": "Moonstone",

nodes.lua

@@ -2,6 +2,7 @@ local has_unifieddyes_mod = minetest.get_modpath("unifieddyes")
 local has_moreblocks_mod = minetest.get_modpath("moreblocks")
 local has_slats_mod = minetest.get_modpath("slats")
 local has_advtrains_mod = minetest.get_modpath("advtrains")
+local has_signs_api_mod = minetest.get_modpath("signs_api")
 
 --nodes
 
@@ -667,6 +668,25 @@ for name, def in pairs(nodes) do
 		advtrains.register_platform("scifi_nodes", "scifi_nodes:" .. name)
 	end
 
+	if has_signs_api_mod and def.signs_banner then
+		signs_api.register_sign("scifi_nodes", name .. "_banner", {
+			depth = 1/16,
+			width = 5,
+			height = 1,
+			entity_fields = {
+				maxlines = 1,
+				color = def.signs_banner_color or "#fff",
+			},
+			node_fields = {
+				visual_scale = 1,
+				description = name .. " banner",
+				tiles = tiles,
+				inventory_image = "scifi_nodes_" .. name .. ".png",
+				use_texture_alpha = "clip",
+			},
+		})
+	end
+
 	if has_slats_mod and def.slat then
 		slats.register_slat(
 			name,