blackjack_comments.rb

puts "Welcome to Blackjack!"

class Blackjack
  def initialize
    @player = Player.new
  end

  def play
    #When you call @player.cards.money,  you are asking Ruby to determine how much money the cards have.
    # You just Ruby to determine how much money the player has.
    while @player.cards.money > 10 do

      #When you look at class Deck (around line 45), you no longer have a method that is "def draw", so you cannot call cards.draw
      #You do, however, have a method call cards.deal and cards.hit. Try those!
      card_one = @player.cards.draw
      card_two = @player.cards.draw
      puts "Your total is [#{card_one} + #{card_two}]"
      puts "Would you like another card? (y or n)?"
      user_answer = gets.chomp
      if user_answer.downcase == y
        puts "Okay, here's your new card. Good luck"
        @player.cards.hit

        #Your new (card_three)card has never been instantiated.
        #So you are trying to add #{card_three}, but Ruby has no idea what card three is.
        #I would suggest making a method that counts all the cards in the hand of a player.
        #If you remember the method '.reduce', it could be something like this.
        #(but the method needs to be moved to another spot (outside of def play))

          #def sum_player_hand(player_hand)
            #player_hand.reduce(:+)
          #end

        #player_hand is an array you will give the method, and it will sum all the elements in the array.  
        puts "Your new total is #{sum_player_hand(HAND_YOU_GIVE_IT)}"
      else
        puts "You chose to stay!  Your total is #{sum_player_hand(HAND_YOU_GIVE_IT)}. Thanks for playing."
      end
    end
  end
  #You need something, so if @player wins/loses, and plays again..
    #
    # @player.money -= 10
    #
  #@player must lose $10.  
  #Maybe every time you call the method 'play', @player.money -= 10.
end

#Player looks good.  
class Player
  attr_accessor :cards, :money, :total
  def initialize
    @cards = Deck.new
    @money = 100
    @total = 0
  end
end

#Cards looks good except you should think about the || operator, so that an ace = [11] OR [1]
class Deck
  attr_reader :cards
  def initialize
    faces = [10] * 4
    aces = [11] * 4
    @cards = ((2..9).to_a * 4).concat(faces).concat(aces).shuffle
  end

  def total
    @cards.count
  end

  def shuffle
    @cards = @cards.shuffle
  end

  def deal
    @cards.shift(2)
  end

  def hit
    @cards.shift
  end
end

end