```ruby
class GridOne

  attr_reader :map, :program_1, :background

  def initialize(window, user)
    @window, @user = window, user
    @map = Map.new(@window, 'media/grid_one.txt', 'media/grid_one_tileset.png',
                   {'V'=>0, 'g'=>1, '.'=>nil})
    @background  = Gosu::Image.new(@window, 'media/background.png', false)
    @program_1   = Program.new(@window, 416, 160)
  end

  def start
    @window.set_current_grid_as(self)
  end

  def update
    @program_1.update
  end

  def draw
    @map.draw
    @program_1.draw
  end

  def width
    @map.width
  end

  def height
    @map.height
  end

  def solid_blocks
    @map.solid_blocks
  end

  def lines
    @map.lines
  end

end
```

Update GridOne to subclass Grid
user
```ruby
class GridOne < Grid

  attr_reader :program_1

  def initialize
    super
    @program_1   = Program.new(@window, 416, 160)
  end


  def update
    super
    @program_1.update
  end

  def draw
    super
    @program_1.draw
  end

end
```
assistant