ROFLBALT Framebuffer

gistfile1.rb

class Framebuffer
  def initialize background
    @pixels = Hash.new { |h, k| h[k] = {} }
    @background = background
  end
  def set x, y, pixel
    @pixels[x][y] = pixel
  end
  def get x, y
    @pixels[x][y] || @background.pixel(x, y)
  end
  def size
    @pixels.values.reduce(0) { |a, v| a + v.size }
  end
end