Add visual markers for crated Digtron image

crate.lua

@@ -50,8 +50,10 @@ local loaded_formspec =  "size[4,1.5]" ..
 	default.gui_bg_img ..
 	default.gui_slots ..
 	"field[0.3,0.5;4,0.5;title;Digtron Name;${title}]" ..
-	"button_exit[0.5,1.2;1,0.1;save;Save Title]" ..
+	"button_exit[0.5,1.2;1,0.1;save;Save\nTitle]" ..
 	"tooltip[save;Saves the title of this Digtron]" ..
+	"button_exit[1.5,1.2;1,0.1;show;Show\nNodes]" ..
+	"tooltip[save;Shows what nodes the packed Digtron will occupy if unpacked]" ..
 	"button_exit[2.5,1.2;1,0.1;unpack;Unpack]" ..
 	"tooltip[unpack;Attempts to unpack the Digtron on this location]"
 
@@ -71,18 +73,19 @@ minetest.register_node("digtron:loaded_crate", {
 	on_receive_fields = function(pos, formname, fields, sender)
 		local meta = minetest.get_meta(pos)
 		
-		if fields.unpack or fields.save then
+		if fields.unpack or fields.save or fields.show then
 			meta:set_string("title", fields.title)
 			meta:set_string("infotext", fields.title)
 		end
 		
-		if not fields.unpack then
+		
+		if not (fields.unpack or fields.show) then
 			return
 		end
 		
 		local layout_string = meta:get_string("crated_layout")
 		local layout = DigtronLayout.deserialize(layout_string)
-		
+
 		if layout == nil then
 			meta:set_string("infotext", meta:get_string("title") .. "\nUnable to read layout from crate metadata, regrettably this Digtron may be corrupted or lost.")
 			minetest.sound_play("buzzer", {gain=0.5, pos=pos})			
@@ -90,6 +93,16 @@ minetest.register_node("digtron:loaded_crate", {
 			return
 		end
 		
+		for _, node_image in pairs(layout.all) do
+			if not vector.equals(pos, node_image.pos) then
+				minetest.add_entity(node_image.pos, "digtron:marker_crate")
+			end
+		end
+		
+		if not fields.unpack then
+			return
+		end
+		
 		local pos_diff = vector.subtract(pos, layout.controller)
 		layout.controller = pos
 		for _, node_image in pairs(layout.all) do

entities.lua

@@ -50,6 +50,32 @@ minetest.register_entity("digtron:marker_vertical", {
 	end,
 })
 
+minetest.register_entity("digtron:marker_crate", {
+	initial_properties = {
+		visual = "cube",
+		visual_size = {x=1.05, y=1.05},
+		textures = {"digtron_crate.png", "digtron_crate.png", "digtron_crate.png", "digtron_crate.png", "digtron_crate.png", "digtron_crate.png"},
+		collisionbox = {-0.525, -0.525, -0.525, 0.525, 0.525, 0.525},
+		physical = false,
+	},
+
+	on_activate = function(self, staticdata)
+		minetest.after(5.0, 
+			function(self) 
+				self.object:remove()
+			end,
+			self)
+	end,
+	
+	on_rightclick=function(self, clicker)
+		self.object:remove()
+	end,
+	
+	on_punch = function(self, hitter)
+		self.object:remove()
+	end,
+})
+
 minetest.register_entity("digtron:builder_item", {
 
 	initial_properties = {

node_storage.lua

@@ -2,11 +2,13 @@
 -- Note that inventories are digtron group 2.
 minetest.register_node("digtron:inventory",
 {
-	description = "Digtron Inventory Hopper",
+	description = "Digtron Inventory Storage",
 	groups = {cracky = 3,  oddly_breakable_by_hand=3, digtron = 2, tubedevice = 1, tubedevice_receiver = 1},
 	drop = "digtron:inventory",
 	sounds = digtron.metal_sounds,
 	paramtype2= "facedir",
+	drawtype = "nodebox",
+	paramtype = "light",
 	is_ground_content = false,
 	tiles = {"digtron_plate.png^digtron_inventory.png"},
 
@@ -61,11 +63,13 @@ minetest.register_node("digtron:inventory",
 -- Note that fuel stores are digtron group 5.
 minetest.register_node("digtron:fuelstore",
 {
-	description = "Digtron Fuel Hopper",
+	description = "Digtron Fuel Storage",
 	groups = {cracky = 3,  oddly_breakable_by_hand=3, digtron = 5, tubedevice = 1, tubedevice_receiver = 1},
 	drop = "digtron:fuelstore",
 	sounds = digtron.metal_sounds,
 	paramtype2= "facedir",
+	drawtype = "nodebox",
+	paramtype = "light",
 	is_ground_content = false,
 	tiles = {"digtron_plate.png^digtron_fuelstore.png"},
 
@@ -145,6 +149,8 @@ minetest.register_node("digtron:combined_storage",
 	drop = "digtron:combined_storage",
 	sounds = digtron.metal_sounds,
 	paramtype2= "facedir",
+	drawtype = "nodebox",
+	paramtype = "light",
 	is_ground_content = false,
 	tiles = {"digtron_plate.png^digtron_combined_storage.png"},