Added Computer AI elements

app.rb

require_relative "player_class.rb"
require_relative "game_class.rb"

# This driver just collects initial information 
# (player names, first moves, and creates a new game Class and new player classes.

answers = ["Rock", "Paper", "Scissors"]

puts "Play to best of? (1, 3, 5)"
best_of = gets.chomp.to_i

puts "Let's play some Rock, Paper, Scissors!"
puts "\n Player 1, what is your name?"
player1_name = gets.chomp

puts "\n #{player1_name}, what is your move? Rock, Paper, or Scissors?"
player1_move = gets.chomp.capitalize

unless answers.include? player1_move
  abort("I'm sorry, that's not an acceptable answer. Please try again later.")
end

puts "\n Alright Player 2 - What is your name? ('Computer' if you want A.I)"
player2_name = gets.chomp

if player2_name == "Computer"
  player2_move = answers.sample
else 
  puts "\n #{player2_name}, what is your move?"
  player2_move = gets.chomp.capitalize.to_s
end

unless answers.include? player2_move
  abort("I'm sorry, that's not an acceptable answer. Please try again later.")
end

round = 0

this_game = Game.new(player1_name, player1_move, player2_name, player2_move, best_of)
this_game.new_players

this_game.game_loop

game_class.rb

class Game

  
  attr_accessor :player1_name, :player2_name, :player1_move, :player2_move, :best_of, :player1, :player2 
  
  
  def initialize(player1_name, player1_move, player2_name, player2_move, best_of)
    @player1_name = player1_name
    @player2_name = player2_name
    @player1_move = player1_move
    @player2_move = player2_move
    @best_of = best_of
  end
  

  $answers = ["Rock", "Paper", "Scissors"]
  
  def new_players# (player1_name, player1_move, player2_name, player2_move)
    @player1 = Player.new(@player1_name, @player1_move)
    @player2 = Player.new(@player2_name, @player2_move)
  end
  
  def need_to_win
    return (best_of / 2) + 1
  end
  
  def keep_playing?
    if player1.score < need_to_win && player2.score < need_to_win
      true
    else
      false
    end
  end
    
  def acceptable_answer?(move)
    if $answers.include? move == false
      abort("I'm sorry, that's not an acceptable answer. Please try again later.")
    end
  end
  
  
  def new_input
    puts "\n #{player1_name}, what is your move? Rock, Paper, or Scissors?"
    player1_move = gets.chomp.capitalize
    
    acceptable_answer?(player1_move)
     
    if player2.name == "Computer"
      player2_move = answers.sample
    else
      puts "\n #{player2_name}, what is your move?"
      player2_move = gets.chomp.capitalize.to_s
      
      acceptable_answer?(player2_move)
      
    end
  end
    
  def game_loop
    while keep_playing? == true
      who_wins
      new_input
      
      player1.move = player1_move
      player2.move = player2_move
    end
    game_over
  end
  
  def who_wins
    
    if player2.name == "Computer"
      puts "\n Computer chose #{player2.move}"
    end
    
      if player1.move == "Rock" && player2.move == "Rock"
        puts "\n Tie!"
      elsif player1.move == "Rock" && player2.move == "Paper"
        puts "\n #{player2.name} wins!"
        player2.score += 1
      elsif player1.move == "Rock" && player2.move == "Scissors"
        puts "\n #{player1.name} wins!"
        player1.score += 1
      end

      if player1.move == "Paper" && player2.move == "Rock"
        puts "\n #{player1.name} wins!"
        player1.score += 1
      elsif player1.move == "Paper" && player2.move == "Paper"
        puts "\n Tie!"
      elsif player1.move == "Paper" && player2.move == "Scissors"
        puts "\n #{player2.name} wins!"
        player2.score += 1
      end

      if player1.move == "Scissors" && player2.move == "Rock"
        puts "\n #{player2.name} wins!"
        player2.score += 1
      elsif player1.move == "Scissors" && player2.move == "Paper"
        puts "\n #{player1.name} wins!"
        player1.score += 1
      elsif player1.move == "Scissors" && player2.move == "Scissors"
        puts "\n Tie!"
      end
    end
    
    def game_over
      puts "\n Game over!"
      if player1.score > player2.score
        puts "\n #{player1.name} wins!! #{player1.score} - #{player2.score}"
      elsif player2.score > player1.score
        puts "\n #{player2.name} wins!! #{player2.score} - #{player1.score}"
      else
        puts "Tie!"
        puts "#{player1.name} - #{player1.score}"
        puts "#{player2.name} - #{player2.score}"
      end
    end
end

player_class.rb

class Player
  
  attr_accessor :name, :move, :score
  
  def initialize(name, move, score: 0)
    @name = name
    @move = move
    @score = score
  end
  
end