Generate a grid of squares for betting on a game.

_squares.rb

require 'axis'

set = (0..9).to_a

top = Axis.new('Top Numbers', set.dup)
side = Axis.new('Side Numbers', set.dup)

top.generate_values!
side.generate_values!

axis.rb

require 'lingo'
require 'roller'

class Axis
  include Lingo

  attr_reader :name
  attr_accessor :set, :values

  def initialize(name, set)
    @name = name
    @set = set
    @values = []
  end

  def generate_values!
    lingo.speak(name)
    while !self.set.empty? do
      value, self.set = Roller.new(self.set).shoot!
      self.values << value
    end
    lingo.speak(values.join('  '))
    lingo.silence
  end

  protected

  def lingo
    @lingo ||= Lingo.new
  end
end

lingo.rb

module Lingo
  def speak(words)
    puts "==> #{words}"
  end

  def silence
    puts
  end
end

roller.rb

class Roller
  attr_reader :set

  def initialize(set = [])
    @set = set
  end

  def shoot!
    shake_em_up
    value = self.set.pop
    return value, self.set
  end

  protected

  def shake_em_up
    self.set.shuffle!
  end
end