Created
October 16, 2015 05:57
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| class TicTacToe | |
| attr_accessor :board, :winner | |
| attr_reader :winning_positions | |
| def initialize | |
| @board = create_board | |
| @winner = nil | |
| @winning_positions = [ [1, 2, 3], [4, 5, 6], [7, 8, 9], [1, 4, 7], [2, 5, 8], [3, 6, 9], [1, 5, 9], [3, 5, 7] ] | |
| end | |
| def play | |
| while !game_over? | |
| player_turn | |
| comp_turn | |
| draw_board | |
| end | |
| output_winner | |
| end | |
| def game_over? | |
| winner? || tie? | |
| end | |
| def output_winner | |
| if winner | |
| puts "#{winner} won!" | |
| else | |
| puts "It's a tie." | |
| end | |
| end | |
| def draw_board | |
| puts " #{board[1]} | #{board[2]} | #{board[3]} " | |
| puts "------------------" | |
| puts " #{board[4]} | #{board[5]} | #{board[6]} " | |
| puts "------------------" | |
| puts " #{board[7]} | #{board[8]} | #{board[9]} " | |
| end | |
| def winner? | |
| winning_positions.each do |position| | |
| if board[position[0]] == 'x' and board[position[1]] == 'x' and board[position[2]] == 'x' | |
| self.winner = 'Player' | |
| return true | |
| elsif board[position[0]] == 'o' and board[position[1]] == 'o' and board[position[2]] == 'o' | |
| self.winner = 'Computer' | |
| return true | |
| end | |
| end | |
| false | |
| end | |
| def player_turn | |
| puts "Choose square (1--9)" | |
| choice = gets.chomp.to_i | |
| unless board.select {|k, v| v == ' '}.keys.include?(choice) | |
| puts "You must pick an empty square." | |
| choice = gets.chomp.to_i | |
| end | |
| self.board[choice] = 'x' | |
| end | |
| def comp_turn | |
| choice = board.select {|k,v| v == ' '}.keys.sample | |
| self.board[choice] = 'o' | |
| end | |
| def tie? | |
| board.select {|k,v| v == ' '}.keys.empty? | |
| end | |
| private | |
| def create_board | |
| hash = {} | |
| (1..9).each {|n| hash[n] = ' '} | |
| hash | |
| end | |
| end | |
| TicTacToe.new.play |
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