RMVXA script by Hime with modifications for flexibility and error handling.

Reference Event Pages.rb

=begin
#===============================================================================
 Title: Reference Event Pages
 Author: Hime (modded by Decanter where noted)
 Date: Mar 16, 2014
 URL: http://www.himeworks.com/2014/03/16/reference-event-pages/
--------------------------------------------------------------------------------
 ** Change log
 Mar 16, 2014
   - Initial release
--------------------------------------------------------------------------------   
 ** Terms of Use
 * Free to use in non-commercial projects
 * Contact me for commercial use
 * No real support. The script is provided as-is
 * Will do bug fixes, but no compatibility patches
 * Features may be requested but no guarantees, especially if it is non-trivial
 * Credits to Hime Works in your project
 * Preserve this header
--------------------------------------------------------------------------------
 ** Description
 
 This script allows you to create reference pages for your events.  
 
 A reference page allows you to create one page and then re-use it in different
 events or troops. This can be applied to troop events and map events.
 
 For map events, the reference page will copy the event commands,
 page conditions, page graphic, as well as any other page settings.
 
 For troop events, the reference page will copy the event commands, the
 condition, the span, and any other page settings
 
 Troop events can only reference other troop events. Similarly, map events
 can only reference other map events.
 
--------------------------------------------------------------------------------
 ** Installation
 
 In the script editor, place this script below Materials and above Main

--------------------------------------------------------------------------------
 ** Usage 
 
 -- Map Events --
 
 To create a reference page for map events, create a comment and tag it with
 
   <reference page: eventID pageNum>
   <reference page: eventID pageNum mapID>
   
 If you don't specify a map ID, then the event assumes the referenced event is
 on the same map as the current event.
 
 -- Troop Events --
 
 You can have a troop event page reference any other troop event page.
 To create a reference page, create a comment and then tag it with
 
   <reference page: troopID pageNumber>
   
--------------------------------------------------------------------------------
 ** Example
 
 To use page 1 of troop 5's events as the reference of a reference page,
 the comment would look like
 
   <reference page: 1 5>
   
 To use page 4 of map event 2 on map 6 as the reference page, the comment
 would look like
 
   <reference page: 2 4 6>
 
#===============================================================================
=end
$imported = {} if $imported.nil?
$imported[:TH_ReferenceEventPages] = true
#===============================================================================
# ** Configuration
#===============================================================================
module TH
  module Reference_Event_Pages    
    Regex = /<reference[-_ ]page:\s*(\S+)\s+(\S+)(?:\s+(\S+))?\s*>/i # modded \d to \S
    
    #---------------------------------------------------------------------------
    # Simple cache mechanism
    #---------------------------------------------------------------------------
    def self.load_map(map_id)
      @cache ||= {}
      @cache[map_id] = load_data("Data/Map%03d.rvdata2" %map_id) unless @cache.include?(map_id)
      @cache[map_id]
    end
  end
end
#===============================================================================
# ** Rest of script
#===============================================================================
module RPG
  class Event
    
    alias :th_reference_event_pages_pages :pages
    def pages
      load_reference_event_pages unless @reference_event_pages_loaded
      th_reference_event_pages_pages       
    end
    
    def load_reference_event_pages
      @reference_event_pages_loaded = true
      self.pages.each_with_index do |page, i|
        page.list.each do |cmd|
          if cmd.code == 108 && cmd.parameters[0] =~ TH::Reference_Event_Pages::Regex
            event_id = eval($1).to_i # modded to eval
            page_id = eval($2).to_i # modded to eval
            map_id = $3 ? eval($3).to_i : $game_map.map_id # modded to eval
            
            begin # modded to add error handling
              map = TH::Reference_Event_Pages.load_map(map_id)
              page = map.events[event_id].pages[page_id-1]
              @pages[i] = page
            rescue
              puts $!
              puts "Invalid map, event, or page specified for event " + self.id.to_s + " at (" + self.x.to_s + "," + self.y.to_s + ") on map " + $game_map.map_id.to_s
            end
          end
        end
      end
    end
  end
  
  class Troop
    
    alias :th_reference_event_pages_pages :pages
    def pages
      load_reference_event_pages unless @reference_event_pages_loaded
      th_reference_event_pages_pages
    end

    def load_reference_event_pages
      @reference_event_pages_loaded = true
      self.pages.each_with_index do |page, i|
        page.list.each do |cmd|
          if cmd.code == 108 && cmd.parameters[0] =~ TH::Reference_Event_Pages::Regex
            troop_id = eval($1).to_i # modded to eval
            page_id = eval($2).to_i # modded to eval
            
            begin # modded to add error handling
              page = $data_troops[troop_id].pages[page_id-1]
              @pages[i] = page
            rescue
              puts $!
            end
          end
        end
      end
    end
  end
end

# modded in everything from here down
class Game_Event < Game_Character
  def name
    return @event.name
  end
end