tic-tac-toc

tic-tac-toe

# new_game = TicTacToe.new
# new_game.play
class TicTacToe
  def initialize(board = nil)
    @board = ["1", "2", "3", "4", "5", "6", "7", "8", "9"]
  end

  def display_board(board)
    puts "|#{board[0]}|#{board[1]}|#{board[2]}|"
    puts "|#{board[3]}|#{board[4]}|#{board[5]}|"
    puts "|#{board[6]}|#{board[7]}|#{board[8]}|"
  end

  WIN_COMBOS = [
    [0,1,2],
    [3,4,5],
    [6,7,8],
    [0,3,6],
    [1,4,7],
    [2,5,8],
    [0,4,8],
    [2,4,6]
  ]

  def reset_board
    @board = ["1", "2", "3", "4", "5", "6", "7", "8", "9"]
  end

  def input_to_index(user_input)
    user_input.to_i - 1
  end

  def move(index, current_player)
    @board[index] = current_player
  end

  def position_taken?(index)
    if (@board[index] == "x" || @board[index] == "o")
      true
    else
      false
    end
  end

  def valid_move?(index)
    if position_taken?(index) == false
      true
    else
      false
    end
  end

  def turn
    puts current_player
    puts "make your move:"
    user_input = gets.strip
    index = input_to_index(user_input)
    if valid_move?(index)
      move(index, current_player)
    else
      puts "something about that i don't like...try again"
      display_board(@board)
      turn
    end
  end

  def turn_count
    @board.count { |current_player| current_player == "x" || current_player =="o"}
  end

  def current_player
    turn_count % 2 == 0 ? "x" : "o"
  end

  def won?
    WIN_COMBOS.detect do |combo|
      @board[combo[0]] == @board[combo[1]] && @board[combo[1]] == @board[combo[2]] && position_taken?(combo[0])
    end
  end

  def full?
    @board.all? { |index| index == "x" || index == "o"}
  end

  def draw?
    full? && !won?
  end

  def over?
    won? || draw?
  end

  def winner
    if won?
      winner = @board[won?[0]]
    end
  end

  def play
    until over?
      display_board(@board)
      turn
    end
    if won?
      display_board(@board)
      puts "congrats! #{winner} is the champion!"
    elsif draw?
      display_board(@board)
      puts "its a tie..."
    end
    puts "play again? y/n"
    user_input = gets.strip
    if user_input == "y" || user_input == "Y"
      reset_board
      play
    else
    end
  end
end