Autosave RMXP Script

class Scene_Title
  def main
    # If battle test
    if $BTEST
      battle_test
      return
    end
    # Load database
    $data_actors        = load_data("Data/Actors.rxdata")
    $data_classes       = load_data("Data/Classes.rxdata")
    $data_skills        = load_data("Data/Skills.rxdata")
    $data_items         = load_data("Data/Items.rxdata")
    $data_weapons       = load_data("Data/Weapons.rxdata")
    $data_armors        = load_data("Data/Armors.rxdata")
    $data_enemies       = load_data("Data/Enemies.rxdata")
    $data_troops        = load_data("Data/Troops.rxdata")
    $data_states        = load_data("Data/States.rxdata")
    $data_animations    = load_data("Data/Animations.rxdata")
    $data_tilesets      = load_data("Data/Tilesets.rxdata")
    $data_common_events = load_data("Data/CommonEvents.rxdata")
    $data_system        = load_data("Data/System.rxdata")
    # Make system object
    $game_system = Game_System.new
    # Make title graphic
    @sprite = Sprite.new
    @sprite.bitmap = RPG::Cache.title($data_system.title_name)
    # Make command window
    s1 = "Play"
    s2 = "Exit"
    @command_window = Window_Command.new(192, [s1, s2])
    @command_window.back_opacity = 160
    @command_window.x = 320 - @command_window.width / 2
    @command_window.y = 288
    # Play title BGM
    $game_system.bgm_play($data_system.title_bgm)
    # Stop playing ME and BGS
    Audio.me_stop
    Audio.bgs_stop
    # 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 command window
    @command_window.dispose
    # Dispose of title graphic
    @sprite.bitmap.dispose
    @sprite.dispose
  end
  #--------------------------------------------------------------------------
  # * Frame Update
  #--------------------------------------------------------------------------
  def update
    # Update command window
    @command_window.update
    # If C button was pressed
    if Input.trigger?(Input::C)
      # Branch by command window cursor position
      case @command_window.index
      when 0  # New game
        command_new_game
      when 1  # Shutdown
        command_shutdown
      end
    end
  end
  #--------------------------------------------------------------------------
  # * Command: New Game
  #--------------------------------------------------------------------------
  def command_new_game
    if FileTest.exist?("Save.rxdata")
      # Play decision SE
      $game_system.se_play($data_system.decision_se)
      # Switch to load screen
      $scene = Auto_Load2.new
    else
    # Play decision SE
    $game_system.se_play($data_system.decision_se)
    # Stop BGM
    Audio.bgm_stop
    # Reset frame count for measuring play time
    Graphics.frame_count = 0
    # Make each type of game object
    $game_temp          = Game_Temp.new
    $game_system        = Game_System.new
    $game_switches      = Game_Switches.new
    $game_variables     = Game_Variables.new
    $game_self_switches = Game_SelfSwitches.new
    $game_screen        = Game_Screen.new
    $game_actors        = Game_Actors.new
    $game_party         = Game_Party.new
    $game_troop         = Game_Troop.new
    $game_map           = Game_Map.new
    $game_player        = Game_Player.new
    # Set up initial party
    $game_party.setup_starting_members
    # Set up initial map position
    $game_map.setup($data_system.start_map_id)
    # Move player to initial position
    $game_player.moveto($data_system.start_x, $data_system.start_y)
    # Refresh player
    $game_player.refresh
    # Run automatic change for BGM and BGS set with map
    $game_map.autoplay
    # Update map (run parallel process event)
    $game_map.update
    # Switch to map screen
    $scene = Scene_Map.new
  end
  end
  #--------------------------------------------------------------------------
  # * Command: Shutdown
  #--------------------------------------------------------------------------
  def command_shutdown
    # Play decision SE
    $game_system.se_play($data_system.decision_se)
    # Fade out BGM, BGS, and ME
    Audio.bgm_fade(800)
    Audio.bgs_fade(800)
    Audio.me_fade(800)
    # Shutdown
    $scene = nil
  end
end


#==============================================================================
# ** Scene_File
#------------------------------------------------------------------------------
#  This is a superclass for the save screen and load screen.
#==============================================================================

class Auto_Load
  #--------------------------------------------------------------------------
  # * Object Initialization
  #     help_text : text string shown in the help window
  #--------------------------------------------------------------------------
  def initialize(help_text)
    @help_text = ""
  end
  #--------------------------------------------------------------------------
  # * Main Processing
  #--------------------------------------------------------------------------
  def main
    # Select last file to be operated
    @file_index = $game_temp.last_file_index
    # Execute transition
    Graphics.transition
    # Main loop
    loop do
      on_decision(make_filename(@file_index))
      $game_temp.last_file_index = @file_index
      # Abort loop if screen is changed
      if $scene != self
        break
      end
    end
    # Prepare for transition
    Graphics.freeze
  end
  #--------------------------------------------------------------------------
  # * Make File Name
  #     file_index : save file index (0-3)
  #--------------------------------------------------------------------------
  def make_filename(file_index)
    return "Save.rxdata"
  end
end


#==============================================================================
# ** Scene_Load
#------------------------------------------------------------------------------
#  This class performs load screen processing.
#==============================================================================

class Auto_Load2 < Auto_Load
  #--------------------------------------------------------------------------
  # * Object Initialization
  #--------------------------------------------------------------------------
  def initialize
    # Remake temporary object
    $game_temp = Game_Temp.new
    # Timestamp selects new file
    $game_temp.last_file_index = 0
    latest_time = Time.at(0)
    for i in 0..3
      filename = make_filename(i)
      if FileTest.exist?(filename)
        file = File.open(filename, "r")
        if file.mtime > latest_time
          latest_time = file.mtime
          $game_temp.last_file_index = i
        end
        file.close
      end
    end
    super("Which file would you like to load?")
  end
  #--------------------------------------------------------------------------
  # * Decision Processing
  #--------------------------------------------------------------------------
  def on_decision(filename)
    # If file doesn't exist
    unless FileTest.exist?(filename)
      # Play buzzer SE
      $game_system.se_play($data_system.buzzer_se)
      return
    end
    # Play load SE
    $game_system.se_play($data_system.load_se)
    # Read save data
    file = File.open(filename, "rb")
    read_save_data(file)
    file.close
    # Restore BGM and BGS
    $game_system.bgm_play($game_system.playing_bgm)
    $game_system.bgs_play($game_system.playing_bgs)
    # Update map (run parallel process event)
    $game_map.update
    # Switch to map screen
    $scene = Scene_Map.new
  end
  #--------------------------------------------------------------------------
  # * Read Save Data
  #     file : file object for reading (opened)
  #--------------------------------------------------------------------------
  def read_save_data(file)
    # Read character data for drawing save file
    characters = Marshal.load(file)
    # Read frame count for measuring play time
    Graphics.frame_count = Marshal.load(file)
    # Read each type of game object
    $game_system        = Marshal.load(file)
    $game_switches      = Marshal.load(file)
    $game_variables     = Marshal.load(file)
    $game_self_switches = Marshal.load(file)
    $game_screen        = Marshal.load(file)
    $game_actors        = Marshal.load(file)
    $game_party         = Marshal.load(file)
    $game_troop         = Marshal.load(file)
    $game_map           = Marshal.load(file)
    $game_player        = Marshal.load(file)
    # If magic number is different from when saving
    # (if editing was added with editor)
    if $game_system.magic_number != $data_system.magic_number
      # Load map
      $game_map.setup($game_map.map_id)
      $game_player.center($game_player.x, $game_player.y)
    end
    # Refresh party members
    $game_party.refresh
  end
end


#==============================================================================
# ** Scene_Save
#------------------------------------------------------------------------------
#  This class performs save screen processing.
#==============================================================================
class Auto_Save
  def initialize
  end
  def main
    # Execute transition
#    Graphics.transition
    on_decision("Save.rxdata")
    # Prepare for transition
    Graphics.freeze
    $scene = Scene_Map.new
  end
  #--------------------------------------------------------------------------
  # * Decision Processing
  #--------------------------------------------------------------------------
  def on_decision(filename)
    file = File.open(filename, "wb")
    write_save_data(file)
    file.close
  end
  #--------------------------------------------------------------------------
  # * Write Save Data
  #     file : write file object (opened)
  #--------------------------------------------------------------------------
  def write_save_data(file)
    # Make character data for drawing save file
    characters = []
    for i in 0...$game_party.actors.size
      actor = $game_party.actors[i]
      characters.push([actor.character_name, actor.character_hue])
    end
    # Write character data for drawing save file
    Marshal.dump(characters, file)
    # Wrire frame count for measuring play time
    Marshal.dump(Graphics.frame_count, file)
    # Increase save count by 1
    $game_system.save_count += 1
    # Save magic number
    # (A random value will be written each time saving with editor)
    $game_system.magic_number = $data_system.magic_number
    # Write each type of game object
    Marshal.dump($game_system, file)
    Marshal.dump($game_switches, file)
    Marshal.dump($game_variables, file)
    Marshal.dump($game_self_switches, file)
    Marshal.dump($game_screen, file)
    Marshal.dump($game_actors, file)
    Marshal.dump($game_party, file)
    Marshal.dump($game_troop, file)
    Marshal.dump($game_map, file)
    Marshal.dump($game_player, file)
  end
end