#==============================================================================
# ** Scene_Menu
#------------------------------------------------------------------------------
#  The Menu
#==============================================================================
 
class Scene_Menu
  #--------------------------------------------------------------------------
  # * Object Initialization
  #     menu_index : command cursor's initial position
  #--------------------------------------------------------------------------
  def initialize(menu_index = 0)
    @menu_index = menu_index
  end
  #--------------------------------------------------------------------------
  # * Main Processing
  #--------------------------------------------------------------------------
  def main
    # Make command window
    @spriteset = Sprite.new 
    @spriteset.bitmap = RPG::Cache.title($data_system.title_name) 
    @command_window = Window_Menucommand.new
    @command_window.index = @menu_index
    # If number of party members is 0
    if $game_party.actors.size == 0
      # Disable items, skills, equipment, and status
      @command_window.disable_item(0)
      @command_window.disable_item(1)
      @command_window.disable_item(2)
      @command_window.disable_item(3)
    end
    # If save is forbidden
    if $game_system.save_disabled
      # Disable save
      @command_window.disable_item(4)
    end
    # Make status window
    @status_window = Window_MenuStatus.new
    @status_window.x = 640 - @status_window.width - 5
    @status_window.y = @command_window.height + 10
    # Make gold window
    @gold_window = Window_Gold.new
    @gold_window.x = 640 - @status_window.width - 5
    @gold_window.y = @command_window.height + @status_window.height + 15
    @gold_window.width = @status_window.width
    @gold_window.height = 480 - 64 - 250 - 20
    
    @variable_window = Window_Variables.new
    # Execute transition
    Graphics.transition
    # Main loop
    loop do
      # Update game screen
      Graphics.update
      # Update input information
      Input.update
      # Frame update
      update
      # Abort loop if screen is changed
      if $scene != self
        break
      end
    end
    # Prepare for transition
    Graphics.freeze
    # Dispose of windows
    @variable_window.dispose
    @command_window.dispose
    @gold_window.dispose
    @spriteset.bitmap.dispose 
    @status_window.dispose
    @spriteset.dispose
  end
  #--------------------------------------------------------------------------
  # * Frame Update
  #--------------------------------------------------------------------------
  def update
    # Update windows
    #@spriteset.update
    @variable_window.update
    @command_window.update
    @gold_window.update
    @status_window.update
    # If command window is active: call update_command
    if @command_window.active
      update_command
      return
    end
    # If status window is active: call update_status
    if @status_window.active
      update_status
      return
    end
  end
  #--------------------------------------------------------------------------
  # * Frame Update (when command window is active)
  #--------------------------------------------------------------------------
  def update_command
    # If B button was pressed
    if Input.trigger?(Input::B)
      # Play cancel SE
      $game_system.se_play($data_system.cancel_se)
      # Switch to map screen
      $scene = Scene_Map.new
      return
    end
    # If C button was pressed
    if Input.trigger?(Input::C)
      # If command other than save or end game, and party members = 0
      if $game_party.actors.size == 0 and @command_window.index < 4
        # Play buzzer SE
        $game_system.se_play($data_system.buzzer_se)
        return
      end
      # Branch by command window cursor position
      case @command_window.index
      when 0  # save
        # Play decision SE
        $game_system.se_play($data_system.decision_se)
        # Switch to item screen
        $scene = Scene_Save.new
      when 1  # load
        # Play decision SE
        $game_system.se_play($data_system.decision_se)
        # Make status window active
        $scene = Scene_Load2.new
      when 2  # exit
        # Play decision SE
        $game_system.se_play($data_system.decision_se)
        # Make status window active
        $scene = Scene_End.new
      end
      return
    end
  end
end