class Weapon
  def initialize
    @image = Rubygame::Image.load("rocket.png")
    @rect = []
    @status = []
  end
  def generate x , y , status
    @rect << Rect.new(x,y,*@image.size)
    @status << status
  end
  def movement
    @rect.zip(@status).each do |pos,move|
      if move == true
        pos.centery -= 3
        if pos.centery <= 0
          pos.pop()
          move.pop()
        end
      else
        pos.centery += 3
        if pos.centery >= 600
          pos.pop()
          move.pop()
        end
      end
    end
  end
  def draw screen
    @rect.each do |rect|
      @image.blit(screen,[rect.centerx,rect.centery])
    end
  end
end