module Introcredits

  @@images = []

  class Image
    def initialize(name, id)
      @id = id
      @finished = false
      @start = rand(120)-60
      $game_screen.pictures[@id].show(name, 0, @start, 0, 100, 100, 0, 0)
      $game_screen.pictures[@id].move(40, 0, 0, 0, 100, 100, 255, 0)
      @wait = 121
    end

    def update
      @wait -= 1
      if @wait == 101
        $game_screen.pictures[@id].move(80, 0, -@start, 0, 100, 100, 0, 0)
      elsif @wait <= 0
        $game_screen.pictures[@id].erase
        @finished = true
      end
    end

    def finished?
      return @finished
    end
  end

  def self.update
    del = []
    @@images.each { |img|
      img.update
      del.push(img) if img.finished?
    }
    @@images -= del
  end

  def self.show_pic(name, id)
    @@images.push(Image.new(name, id))
  end
end