class NewScene
  def initialize
    $SelectedIndex = 1 if $SelectedIndex == nil
    @scenenum = $SelectedIndex
    @viewport = Viewport.new(0, 0, Graphics.width, Graphics.height)
    @viewport.z = 99999
    @sprites = {}

    @sprites["bg"] = IconSprite.new(0,0,@viewport)
    @sprites["bg"].setBitmap("Graphics/Pictures/bagbg#{@scenenum}")
    @sprites["bg"].opacity = 0

    pbStartAnimation
    pbUpdate
  end

  def msg(mesg)
    Kernel.pbMessage(mesg)
  end

  def pbStartAnimation
    pbUpdateSpriteHash(@sprites)
    16.times do
      Graphics.update
      @sprites["bg"].opacity += 16
    end
  end

  def wait(frames = 1)
    frames.times do
      Graphics.update
      Input.update
    end
  end

  def pbUpdate
    loop do
      Graphics.update
      Input.update
      if Input.trigger?(Input::B)
        @viewport.dispose
        break
      end
      if Input.trigger?(Input::RIGHT)
        pbMoveRight
      end
      if Input.trigger?(Input::LEFT)
        pbMoveLeft
      end
    end
  end

  def pbMoveRight(amount = 1)
    @scenenum += amount
    @scenenum = 1 if @scenenum >= 9
    $SelectedIndex = @scenenum
    @sprites["bg"].setBitmap("Graphics/Pictures/bagbg#{@scenenum}")
  end

  def pbMoveLeft(amount = 1)
    @scenenum -= amount
    @scenenum = 8 if @scenenum <= 0
    $SelectedIndex = @scenenum
    @sprites["bg"].setBitmap("Graphics/Pictures/bagbg#{@scenenum}")
  end

  def pbMoveTo(index)
    @scenenum = index
    @scenenum = 1 if index < 1
    @scenenum = 8 if index > 8
    @sprites["bg"].setBitmap("Graphics/Pictures/bagbg#{@scenenum}")
  end
end