Full MapView [RGSS3]

#   Full MapView (Individual Maps)
#   Created by Kurashi
#   Free for use commercial or not. (Credit Required)
#
#   Place this script below Materials and above Main
#   This script is plug-n-play so long as you name the picture files for your map as such:
#       map_#
#   Where the # is the ID number of the map you want displayed.
#   The file must also be placed in the Pictures folder of your project. Only PNG and Jpeg are supported.

class Scene_Menu < Scene_MenuBase
  def create_command_window
    @command_window = Window_MenuCommand.new
    @command_window.set_handler(:item,      method(:command_item))
    @command_window.set_handler(:skill,     method(:command_personal))
    @command_window.set_handler(:equip,     method(:command_personal))
    @command_window.set_handler(:status,    method(:command_personal))
    @command_window.set_handler(:formation, method(:command_formation))
    @command_window.set_handler(:fullmap,   method(:command_map))
    @command_window.set_handler(:save,      method(:command_save))
    @command_window.set_handler(:game_end,  method(:command_game_end))
    @command_window.set_handler(:cancel,    method(:return_scene))
  end
  def command_map
    SceneManager.call(Scene_FullMap)
  end
end
module Cache
  def self.fullmap(filename)
    load_bitmap("Graphics/Pictures/", filename)
  end
end
class Scene_FullMap < Scene_Base
  def start
    create_map
  end
  def create_map
    map_id = $game_map.map_id
    filename = "map_" + map_id.to_s
    @map = Sprite.new
    @map.bitmap = Cache.fullmap(filename)
  end
  def dispose_all_used_graphics
    @map.bitmap.dispose
    @map.dispose
  end

  def update
    super
    triggers = [:A,:B,:C,:X,:Y,:Z,:L,:R]
    triggers.each {|symbol|
    return_scene if Input.trigger?(symbol)
    }
  end
  def dispose_main_viewport
  end
end
class Window_MenuCommand < Window_Command
  alias :add_original_commands_fmk :add_original_commands
  def add_original_commands
    full_map_command
  end
  def full_map_command
    add_command("Map", :fullmap, $fullMapViewable)
  end
end
module STUFF
    $fullMapViewable = true
end