Battle Parallax Background ~ RGSS2

#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
#             Battle Parallax Background
#             Version: 1.0
#             Author: DiamondandPlatinum3
#             Date: September 6, 2012
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#  Description:
#
#    This script allows you to use a parallax as a background for your
#    Battles. It also allows you to scroll the parallax like any regular
#    map parallax.
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#------------------------------------------------------------------------------
#  Instructions:
#
#     ~  The method to alter the battle parallax is to use a script call with
#        the following line of code
#
#         setbattleparallax( filename, scrollx, scrolly )
#
#        Where 'filename' is where you enter the name of the parallax, this must
#        be done in quotation marks ( " " ).
#        'scrollx' is the amount the parallax will scroll to the left or right.
#        'scrolly' is the amount the parallax will scroll up or down.
#
#
#     -  If you do not want to change a specific value, simply pass in nil as the
#        parameter
#
#
#     -  You can find screenshots to visually explain the method
#        Here: http://img4host.net/upload/07161945504a02819c6ec.png
#
#
#     -  You can also use negative numbers to reverse the directions of the
#        parallax scroll. You'll need to play around with it to achieve the
#        desired effect
#
#=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
#
#
#                  THERE IS NO EDITABLE REGION TO THIS SCRIPT
#
#==============================================================================










#==============================================================================
# ** Spriteset_Battle
#------------------------------------------------------------------------------
#  This class brings together battle screen sprites. It's used within the
# Scene_Battle class.
#==============================================================================

class Spriteset_Battle
  #--------------------------------------------------------------------------
  # * Overwritten Functions
  #--------------------------------------------------------------------------
  #     create_battleback
  #     update_battleback
  #     dispose_battleback_bitmap
  #     dispose_battleback
  #
  #--------------------------------------------------------------------------
  # * Alias Listings
  #--------------------------------------------------------------------------
  alias dp3_batlparallax_sprsetbatl_init_1h2g       initialize
  alias dp3_batlparallax_sprsetbatl_dispose_1h2g    dispose
  alias dp3_batlparallax_sprsetbatl_update_1h2g     update
  #--------------------------------------------------------------------------
  # * Object Initialization
  #--------------------------------------------------------------------------
  def initialize
    # Call Original Method
    dp3_batlparallax_sprsetbatl_init_1h2g

    create_parallax
  end
  #--------------------------------------------------------------------------
  # * Frame Update
  #--------------------------------------------------------------------------
  def update
    update_parallax

    # Call Original Method
    dp3_batlparallax_sprsetbatl_update_1h2g
  end
  #--------------------------------------------------------------------------
  # * Free
  #--------------------------------------------------------------------------
  def dispose
    dispose_parallax

    # Call Original Method
    dp3_batlparallax_sprsetbatl_dispose_1h2g
  end



  #--------------------------------------------------------------------------
  # * Create Battle Background (Floor) Sprite
  #--------------------------------------------------------------------------
  def create_battleback
    @battleback_sprite = nil
  end
  #--------------------------------------------------------------------------
  # * Create Parallax
  #--------------------------------------------------------------------------
  def create_parallax
    @backparallax = Plane.new(@viewport1)
    @backparallax.bitmap = Cache.parallax($game_system.battleparallaxgraphicname)
    @backparallax.z = 0
  end





  #--------------------------------------------------------------------------
  # * Update Battle Background (Floor) Sprite
  #--------------------------------------------------------------------------
  def update_battleback
    @battleback_sprite.update if @battleback_sprite
  end
  #--------------------------------------------------------------------------
  # * Update Parallax
  #--------------------------------------------------------------------------
  def update_parallax
    if @backparallax
      @backparallax.ox += $game_system.battleparallaxgraphicscrollx
      @backparallax.oy += $game_system.battleparallaxgraphicscrolly
    end
  end




  #--------------------------------------------------------------------------
  # * Dispose of Battleback Bitmap
  #--------------------------------------------------------------------------
  def dispose_battleback_bitmap
    @battleback_sprite.bitmap.dispose if @battleback_sprite
  end
  #--------------------------------------------------------------------------
  # * Dispose of Battleback Sprite
  #--------------------------------------------------------------------------
  def dispose_battleback
    @battleback_sprite.dispose if @battleback_sprite
  end
  #--------------------------------------------------------------------------
  # * Free Battle Parallax
  #--------------------------------------------------------------------------
  def dispose_parallax
    @backparallax.dispose if @backparallax
  end

end # of Class




#==============================================================================
# ** Game_System
#------------------------------------------------------------------------------
#  This class handles system data. It saves the disable state of saving and
# menus. Instances of this class are referenced by $game_system.
#==============================================================================

class Game_System
  #--------------------------------------------------------------------------
  # * New Public Instance Variables
  #--------------------------------------------------------------------------
  attr_accessor :battleparallaxgraphicname
  attr_accessor :battleparallaxgraphicscrollx
  attr_accessor :battleparallaxgraphicscrolly
  #--------------------------------------------------------------------------
  # * Alias Listings
  #--------------------------------------------------------------------------
  alias dp3_batlparallax_gamesys_init_1h2g     initialize
  #--------------------------------------------------------------------------
  # * Object Initialization
  #--------------------------------------------------------------------------
  def initialize

    # Call Original Method
    dp3_batlparallax_gamesys_init_1h2g

    # Setup Parallax (safety precautions in case the user doesn't do it themselves)
    @battleparallaxgraphicname    = "BlueSky"
    @battleparallaxgraphicscrollx = 0
    @battleparallaxgraphicscrolly = 0
  end

end # of Class





#==============================================================================
# ** Game_Interpreter
#------------------------------------------------------------------------------
#  An interpreter for executing event commands. This class is used within the
# Game_Map, Game_Troop, and Game_Event classes.
#==============================================================================

class Game_Interpreter
  #--------------------------------------------------------------------------
  # * Set Battle Parallax
  #--------------------------------------------------------------------------
  def setbattleparallax( filename, scrollx, scrolly )
    $game_system.battleparallaxgraphicname    = filename if filename.is_a?(String)
    $game_system.battleparallaxgraphicscrollx = scrollx  if scrollx.is_a?(Integer)
    $game_system.battleparallaxgraphicscrolly = scrolly  if scrolly.is_a?(Integer)
  end

end # of Class