[XP/VX/VXA Script] DerVVulfman's Game Data Sneak

The Game Data Sneak
Code:
#==============================================================================

# ** DerVVulfman's Game Data Sneak

#------------------------------------------------------------------------------

#    by DerVVulfman

#    version 1.0

#    04-02-2013

#    All RGSS???   (Name of method that creates game pending between versions.)

#------------------------------------------------------------------------------

#  This is not an actual script that is used within a game,  but a new method

#  that can be used by scripters to 'sneak' new data classes into their games.

#  This simple system can relieve scripters  of the headaches of aliasing the

#  save_game_data and load_game_data methods in the Scene_Load and Scene_Save

#  classes  by merely attaching the data  to the Game_System class  since the

#  Game_System class itself is always stored in the save data files.

#

#  With the example script below, you can create a call of:

#     p $game_system.data_object.my_data

#

#    --- ( No, you will not use  $game_data.my_data ) ---

# 

#

#  This works  because the Game_Data class  is stored  in Game_System  as the

#  data_object value. And the my_data value within the Game_Data class is now

#  a subvalue accessed from the data_object value itself.

#

#  Likewise, you can also perform the following script call:

#    $game_system.data_object.my_data = 5

#

#  And again,  this works.   Not only that, but the data changed here will be

#  saved as the data is recorded within the Game_System class  which is saved

#  and loaded normally.

#

#  When aliasing, please make your aliased method names nice and unique. ^_^

#

#==============================================================================

#  THANKS to Kain Nobel who kinda gave me the idea by accident.  Haha...

#  He loved it when I suggested it.  Saves us a lot of grief.

#==============================================================================

#==============================================================================

# ** Game_System

#------------------------------------------------------------------------------

#  This class handles data surrounding the system. Backround music, etc.

#  is managed here as well. Refer to "$game_system" for the instance of 

#  this class.

#==============================================================================

class Game_System

  #--------------------------------------------------------------------------

  # * Public Instance Variables

  #--------------------------------------------------------------------------

  attr_accessor :data_object              # Data Object of some class

  #--------------------------------------------------------------------------

  # * Object Initialization

  #--------------------------------------------------------------------------

  alias data_initialize initialize

  def initialize

    # Perform the original call

    data_initialize

    # Create the attachment value

    @data_object = nil

  end

end

#==============================================================================

# ** Game_Data

#------------------------------------------------------------------------------

#  This class holds some arbitrary data you wish to use and store.

#==============================================================================

class Game_Data

  #--------------------------------------------------------------------------

  # * Public Instance Variables

  #--------------------------------------------------------------------------

  attr_accessor :my_data                  # A piece of data within the class

  #--------------------------------------------------------------------------

  # * Object Initialization

  #--------------------------------------------------------------------------

  def initialize

    # Sample data

    @my_data = 0

  end  

end

#==============================================================================

# ** Scene_Title

#------------------------------------------------------------------------------

#  This class performs title screen processing.

#==============================================================================

class Scene_Title

  #--------------------------------------------------------------------------

  # * Alias Listings

  #--------------------------------------------------------------------------

  alias data_command_new_game command_new_game

  #--------------------------------------------------------------------------

  # * Command: New Game

  #--------------------------------------------------------------------------

  def command_new_game

    # Perform the original call

    data_command_new_game

    # This attaches the new game data into Game_System

    $game_system.data_object = Game_Data.new

  end

end