Preparation to add some more monitors

nodes.lua

@@ -1,5 +1,5 @@
 --[[
-    digimons mod for Minetest - Digiline monitors using Display API / Font API
+	digimons mod for Minetest - Digilines monitors using Display API / Font API
 	(c) Pierre-Yves Rollo
 
 	This file is part of digimons.
@@ -18,7 +18,60 @@
 	along with signs.  If not, see <http://www.gnu.org/licenses/>.
 --]]
 
-minetest.register_node('digimons:cathodic_amber_monitor', {
+local common_node_def = {
+	groups = { display_api = 1},
+	on_place = function(itemstack, placer, pointed_thing)
+			minetest.rotate_node(itemstack, placer, pointed_thing)
+			return display_api.on_place(itemstack, placer, pointed_thing)
+		end,
+	on_destruct = display_api.on_destruct,
+	on_rotate = display_api.on_rotate,
+	on_punch = display_api.update_entities,
+	on_construct = function(pos)
+			minetest.get_meta(pos):set_string("formspec",
+				"field[channel;Channel;${channel}]")
+			display_api.on_construct(pos)
+		end,
+	on_receive_fields = function(pos, formname, fields, player)
+			local name = player:get_player_name()
+			if minetest.is_protected(pos, name) then
+				minetest.record_protection_violation(pos, name)
+				return
+			end
+
+			if (fields.channel) then
+				minetest.get_meta(pos):set_string("channel", fields.channel)
+			end
+		end,
+	digiline = {
+		receptor = {},
+		effector = {
+			action = function(pos, _, channel, msg)
+					if channel ~= minetest.get_meta(pos):get_string("channel") then
+						return
+					end
+					digimons.push_text_on_screen(pos, msg)
+				end,
+		},
+	},
+}
+
+function digimons.register_monitor(nodename, nodedef)
+	def = table.copy(common_node_def)
+	for key, value in pairs(nodedef) do
+		if key == 'groups' then
+			def[key] = def[key] or {}
+			for key2, value2 in pairs(value) do
+				def[key][key2] = value2
+			end
+		else
+			def[key] = value
+		end
+	end
+	minetest.register_node(nodename, nodedef)
+end
+
+digimons.register_monitor('digimons:cathodic_amber_monitor', {
 	description = "Cathodic amber monitor",
 	sunlight_propagates = false,
 	paramtype = "light",
@@ -27,7 +80,7 @@ minetest.register_node('digimons:cathodic_amber_monitor', {
 						"digimons_amber_sides.png", "digimons_amber_sides.png^[transformFX]",
 						"digimons_amber_back.png", "digimons_amber_front.png",},
 	drawtype = "nodebox",
-  groups = {choppy = 1, oddly_breakable_by_hand = 1, display_modpack_node = 1},
+	groups = {choppy = 1, oddly_breakable_by_hand = 1},
 	node_box = {
 		type = "fixed",
 		fixed = {
@@ -49,38 +102,4 @@ minetest.register_node('digimons:cathodic_amber_monitor', {
 				color = "#FFA000", font_name = "mozart", halign="left", valing="top",
 		},
 	},
-  on_place = function(itemstack, placer, pointed_thing)
-      minetest.rotate_node(itemstack, placer, pointed_thing)
-      return display_api.on_place(itemstack, placer, pointed_thing)
-    end,
-  on_construct = function(pos)
-      minetest.get_meta(pos):set_string("formspec",
-        "field[channel;Channel;${channel}]")
-      display_api.on_construct(pos)
-    end,
-  on_destruct = display_api.on_destruct,
-  on_rotate = display_api.on_rotate,
-  on_receive_fields = function(pos, formname, fields, player)
-  		local name = player:get_player_name()
-      if minetest.is_protected(pos, name) then
-        minetest.record_protection_violation(pos, name)
-      	return
-    	end
-
-    	if (fields.channel) then
-    		minetest.get_meta(pos):set_string("channel", fields.channel)
-    	end
-    end,
-  on_punch = display_api.update_entities,
-  digiline = {
-    receptor = {},
-    effector = {
-      action = function(pos, _, channel, msg)
-          if channel ~= minetest.get_meta(pos):get_string("channel") then
-            return
-          end
-          digimons.push_text_on_screen(pos, msg)
-        end,
-  	},
-  },
 })