Replaced RoomData's hooks with Initialize API function

rsc/scripts/map_saver.lua

@@ -1,3 +1,9 @@
 local mapSaver = {}
+function mapSaver.Load(region)
+	--empty
+end
+function mapSaver.Save(region)
+	--empty
+end
 --TODO: create a flexible saving & loading system
 return mapSaver

rsc/scripts/setup_server.lua

@@ -26,5 +26,6 @@ dumpTable(roomSystem.RoomManager)
 dumpTable(roomSystem.Room)
 
 local overworld = roomSystem.RoomManager.CreateRoom("overworld")
+roomSystem.Room.Initialize(overworld, "overworld.bmp", mapSaver.Load, mapSaver.Save, mapMaker.debugIsland, mapSaver.Save)
 
 print("Finished the lua script")