module FrameBuffer    class << self    attr_reader :viewport  end    def self.set_start_frame(frame = Graphics.snap_to_bitmap)    @start_frame = frame  end    def self.start(frames = 1, xfocus = nil, yfocus = nil, viewport_z = 10000)    dispose unless disposed?    this_frame = @start_frame || Graphics.snap_to_bitmap    @start_frame = nil    @buffer = []    @viewport = Viewport.new    @viewport.z = viewport_z        frames.times do      sprite = Sprite.new(@viewport)      sprite.bitmap = this_frame.clone      sprite.x = xfocus || Graphics.width / 2      sprite.y = yfocus  || Graphics.height / 2      sprite.ox = xfocus || Graphics.width / 2      sprite.oy = yfocus || Graphics.height / 2      @buffer.push(sprite)    end    this_frame.dispose  end    def self.change_focus(x, y)    @buffer.each do |sprite|      sprite.x = x      sprite.y = y      sprite.ox = x      sprite.oy = y    end  end    def self.dispose    return if disposed?    @buffer.each {|sprite| sprite.dispose}    @viewport.dispose if @viewport    @buffer = nil    @viewport = nil  end    def self.disposed?    !@buffer  end    # Deletes the oldest frame bitmaps and shuffles all the bitmaps down  # replacing the first frame with a fresh snap shot  def self.cycle    return if disposed?    @buffer[-1].bitmap.dispose    @buffer.each_index do |i|      next if i == 0      @buffer[i].bitmap = @buffer[i - 1].bitmap    end    @buffer[0].bitmap = Graphics.snap_to_bitmap  end    # Set's all the frame buffer sprites to use a fresh snapshot  def self.refresh    this_frame = Graphics.snap_to_bitmap    @buffer.each do |sprite|      sprite.bitmap.dispose unless sprite.bitmap.disposed?      sprite.bitmap = this_frame #.clone    end    #this_frame.dispose  end    def self.[](num)    return nil if disposed?    return @buffer[num]  end  endclass Game_Temp  attr_accessor :special_battle_swirlendclass Scene_Map < Scene_Base  #--------------------------------------------------------------------------  # * Preprocessing for Battle Screen Transition  #--------------------------------------------------------------------------  def pre_battle_scene    Graphics.update    Graphics.freeze        if $game_temp.special_battle_swirl      start_boss_swirl      $game_temp.special_battle_swirl = nil    else      start_battle_swirl    end        @spriteset.dispose_characters    BattleManager.save_bgm_and_bgs    BattleManager.play_battle_bgm    Sound.play_battle_start  end  def start_battle_swirl    FrameBuffer.start(3, $game_player.screen_x, $game_player.screen_y)        FrameBuffer[0].z = 0    FrameBuffer[0].zoom_x = 1.01    FrameBuffer[0].zoom_y = 1.01    FrameBuffer[0].opacity = 225    FrameBuffer[0].angle = 0    FrameBuffer[0].blend_type = 0        FrameBuffer[1].z = 1    FrameBuffer[1].zoom_x = 0.88    FrameBuffer[1].zoom_y = 0.99    FrameBuffer[1].opacity = 34    FrameBuffer[1].angle = 6    FrameBuffer[1].blend_type = 1        FrameBuffer[2].z = 2    FrameBuffer[2].zoom_x = 1.04    FrameBuffer[2].zoom_y = 1.04    FrameBuffer[2].opacity = 128    FrameBuffer[2].angle = 355    FrameBuffer[2].blend_type = 0  end    def start_boss_swirl    FrameBuffer.start(4, $game_player.screen_x, $game_player.screen_y)    FrameBuffer[0].z = 0    FrameBuffer[0].zoom_x = 1.01    FrameBuffer[0].zoom_y = 1.01    FrameBuffer[0].opacity = 235    FrameBuffer[0].angle = 0    FrameBuffer[0].blend_type = 0        FrameBuffer[1].z = 1    FrameBuffer[1].zoom_x = 0.95    FrameBuffer[1].zoom_y = 0.93    FrameBuffer[1].opacity = 128    FrameBuffer[1].angle = 353    FrameBuffer[1].blend_type = 0       FrameBuffer[2].z = 2    FrameBuffer[2].zoom_x = 1.3    FrameBuffer[2].zoom_y = 1.3    FrameBuffer[2].opacity = 12    FrameBuffer[2].angle =  12    FrameBuffer[2].blend_type = 2        FrameBuffer[3].z = 3    FrameBuffer[3].zoom_x = 1.02    FrameBuffer[3].zoom_y = 1.02    FrameBuffer[3].opacity = 24    FrameBuffer[3].angle = 356    FrameBuffer[3].blend_type = 1  end    #--------------------------------------------------------------------------  # * Execute Pre-Battle Transition  #--------------------------------------------------------------------------  def perform_battle_transition    Graphics.transition(1)    (0..60).each do |i|      Graphics.brightness = 255      FrameBuffer.refresh      Graphics.frame_reset      Graphics.brightness = 255 - (255 * ((i - 40) / 20.0)) if i > 40      Graphics.update    end    FrameBuffer.dispose    Graphics.freeze  end  end

  def start_battle_swirl    FrameBuffer.start(3)        FrameBuffer[0].z = 0    FrameBuffer[0].zoom_x = 1    FrameBuffer[0].zoom_y = 1    FrameBuffer[0].opacity = 235    FrameBuffer[0].angle = 0    FrameBuffer[0].blend_type = 0        FrameBuffer[1].z = 1    FrameBuffer[1].zoom_x = 1.01    FrameBuffer[1].zoom_y = 1.01    FrameBuffer[1].opacity = 128    FrameBuffer[1].angle = 359    FrameBuffer[1].blend_type = 0       FrameBuffer[2].z = 2    FrameBuffer[2].zoom_x = 0.8    FrameBuffer[2].zoom_y = 0.9    FrameBuffer[2].opacity = 12    FrameBuffer[2].angle = 12    FrameBuffer[2].blend_type = 1  end