Add realm barrier node to separate realms

mods/ITEMS/mcl_core/nodes_misc.lua

@@ -140,6 +140,43 @@ minetest.register_node("mcl_core:barrier", {
 	end,
 })
 
+-- Same as barrier, but non-pointable. This node is only to be used internally to separate realms.
+-- It must NOT be used for anything else.
+-- This node only exists because Minetest does not have support for “dimensions” yet and needs to
+-- be removed when support for this is implemented. 
+minetest.register_node("mcl_core:realm_barrier", {
+	description = "Realm Barrier",
+	_doc_items_create_entry = false,
+	drawtype = "airlike",
+	paramtype = "light",
+	inventory_image = "mcl_core_barrier.png^[colorize:#FF00FF:127^[transformFX",
+	wield_image = "mcl_core_barrier.png^[colorize:#FF00FF:127^[transformFX",
+	tiles = { "blank.png" },
+	stack_max = 64,
+	sunlight_propagates = true,
+	is_ground_content = false,
+	pointable = false,
+	groups = {not_in_creative_inventory = 1, not_solid = 1 },
+	on_blast = function() end,
+	drop = "",
+	_mcl_blast_resistance = 18000003,
+	_mcl_hardness = -1,
+	after_place_node = function (pos, placer, itemstack, pointed_thing)
+		if placer == nil then
+			return
+		end
+		minetest.add_particle({
+			pos = pos,
+			expirationtime = 1,
+			size = 8,
+			texture = "mcl_core_barrier.png^[colorize:#FF00FF:127^[transformFX",
+			playername = placer:get_player_name()
+		})
+	end,
+})
+
+
+
 
 -- The void below the bedrock. Void damage is handled in mcl_playerplus.
 -- The void does not exist as a block in Minecraft but we register it as a

mods/PLAYER/mcl_playerplus/init.lua

@@ -208,7 +208,8 @@ minetest.register_globalstep(function(dtime)
 		end
 
 		-- Show positions of barriers when player is wielding a barrier
-		if player:get_wielded_item():get_name() == "mcl_core:barrier" then
+		local wi = player:get_wielded_item():get_name()
+		if wi == "mcl_core:barrier" or wi == "mcl_core:realm_barrier" then
 			local pos = vector.round(player:getpos())
 			local r = 8
 			local vm = minetest.get_voxel_manip()
@@ -221,14 +222,20 @@ minetest.register_globalstep(function(dtime)
 			for x=pos.x-r, pos.x+r do
 			for y=pos.y-r, pos.y+r do
 			for z=pos.z-r, pos.z+r do
-				local vi = area:indexp(pos)
+				local vi = area:indexp({x=x, y=y, z=z})
-				local node = minetest.get_name_from_content_id(data[vi])
+				local nodename = minetest.get_name_from_content_id(data[vi])
-				if minetest.get_node({x=x,y=y,z=z}).name == "mcl_core:barrier" then
+				local tex
+				if nodename == "mcl_core:barrier" then
+					tex = "mcl_core_barrier.png"
+				elseif nodename == "mcl_core:realm_barrier" then
+					tex = "mcl_core_barrier.png^[colorize:#FF00FF:127^[transformFX"
+				end
+				if tex then
 					minetest.add_particle({
 						pos = {x=x, y=y, z=z},
 						expirationtime = 1,
 						size = 8,
-						texture = "mcl_core_barrier.png",
+						texture = tex,
 						playername = name
 					})
 				end