tictactoe_csharp

Program.cs

using System;

internal class Program
{
    private static void Main(string[] args)
    {

        //-------- CODE HERE 
        Console.Title = "The Point";
        Console.Clear();
        Console.WriteLine("---------------------------------------------------------------------------------------------------------------");
        Console.WriteLine("This is TIC-TAC-TOE, 2 players will play until one of them get 3 sequence of his Symbol ( X or O ) or draw after 9 rounds");
        Console.WriteLine("We will play this game using the NUMERIC Keyboard as references to the squares, ");
        Console.WriteLine("in other words the numbers you should input will be the same as your numeric keyboard, like this:");
        Console.WriteLine("[7] | [8] | [9]");
        Console.WriteLine("[4] | [5] | [6]");
        Console.WriteLine("[1] | [2] | [3]");
        Console.WriteLine("---------------------------------------------------------------------------------------------------------------");
        Console.WriteLine("When you are ready press Enter to start");
        Console.ReadKey();
        Console.Clear();
        TicTacToeGame game = new TicTacToeGame();
        game.Run();

        ExitProgram();
    }
    static void ExitProgram()
    {
        Console.WriteLine("");
        Console.WriteLine(":::::::::::::::::::::::::");
        Console.WriteLine("Thanks for playing!");
        Console.WriteLine(":::::::::::::::::::::::::");

        Environment.Exit(0);
    }
}

public class TicTacToeGame
{
    int currentPlayer = 1;

    public void Run()
    {
        // Generate Board
        Board board = new Board();

        // Player 1
        Player player1 = new Player(1);

        // Player 2
        Player player2 = new Player(2);

        int currentTurn = 0;

        // Get move 
        while (currentTurn < 9)
        {
            board.getValidMove(currentPlayer);

            //checkEnd
            if (board.EndGame(currentPlayer))
            {
                Console.WriteLine($"*****************************************************");
                Console.WriteLine($"Player {currentPlayer} you are the WINNER!");
                Console.WriteLine($"*****************************************************");
                break;
            }

            // change player turn
            currentPlayer = currentPlayer == 1 ? 2 : 1;
            currentTurn++;

        }
        if (currentTurn == 9)
        {
            Console.WriteLine($"*****************************************************");
            Console.WriteLine($"We have a draw!");
            Console.WriteLine($"*****************************************************");
        }

        board.ShowBoard();
    }

}

public class Board
{
    int[,] board = new int[3, 3];

    public void getValidMove(int player)
    {
        bool validChoice = true;
        string playerChoice = "";
        int value;
        do
        {
            ShowBoard();
            Console.WriteLine($"Player {player} what is your move?");
            playerChoice = Console.ReadLine();
            if (int.TryParse(playerChoice, out value))
            {
                if (makeMove(value, player))
                    validChoice = false;
            }
            else
                Console.WriteLine("\nYou should type a NUMBER between 1 and 9");

        } while (validChoice);

        Console.Clear();
    }

    public bool makeMove(int position, int player)
    {


        if (position > 9 || position < 1)
        {
            Console.WriteLine(">> Invalid position, try again");
            return false;
        }

        /* Using numeric keyboard as reference the positions
         7 | 8 | 9
         4 | 5 | 6
         1 | 2 | 3         
         */
        // As the board is filled with int, 1 = "X" player and 2 = "O" Player
        if (position == 7 && board[0, 0] == 0)
        {
            board[0, 0] = player;
            return true;
        }
        if (position == 8 && board[0, 1] == 0)
        {
            board[0, 1] = player;
            return true;
        }
        if (position == 9 && board[0, 2] == 0)
        {
            board[0, 2] = player;
            return true;
        }

        // --- new row 
        if (position == 4 && board[1, 0] == 0)
        {
            board[1, 0] = player;
            return true;
        }
        if (position == 5 && board[1, 1] == 0)
        {
            board[1, 1] = player;
            return true;
        }
        if (position == 6 && board[1, 2] == 0)
        {
            board[1, 2] = player;
            return true;
        }

        // --- new row 
        if (position == 1 && board[2, 0] == 0)
        {
            board[2, 0] = player;
            return true;
        }
        if (position == 2 && board[2, 1] == 0)
        {
            board[2, 1] = player;
            return true;
        }
        if (position == 3 && board[2, 2] == 0)
        {
            board[2, 2] = player;
            return true;
        }

        Console.WriteLine($">> Position {position} not available, try again");
        return false;
    }

    public void ShowBoard()
    {
        Console.WriteLine("----------------------------------------------------------------------------");
        Console.WriteLine("Board current state:");
        Console.Write($"[{board[0, 0].ToString().Replace("1", "X").Replace("2", "O").Replace("0", " ")}]|");
        Console.Write($"[{board[0, 1].ToString().Replace("1", "X").Replace("2", "O").Replace("0", " ")}]|");
        Console.Write($"[{board[0, 2].ToString().Replace("1", "X").Replace("2", "O").Replace("0", " ")}] \n");


        Console.Write($"[{board[1, 0].ToString().Replace("1", "X").Replace("2", "O").Replace("0", " ")}]|");
        Console.Write($"[{board[1, 1].ToString().Replace("1", "X").Replace("2", "O").Replace("0", " ")}]|");
        Console.Write($"[{board[1, 2].ToString().Replace("1", "X").Replace("2", "O").Replace("0", " ")}] \n");

        Console.Write($"[{board[2, 0].ToString().Replace("1", "X").Replace("2", "O").Replace("0", " ")}]|");
        Console.Write($"[{board[2, 1].ToString().Replace("1", "X").Replace("2", "O").Replace("0", " ")}]|");
        Console.Write($"[{board[2, 2].ToString().Replace("1", "X").Replace("2", "O").Replace("0", " ")}] \n");
        Console.WriteLine("----------------------------------------------------------------------------");
    }

    public bool EndGame(int player)
    {
        // check horizontal
        if (board[0, 0] == player && board[0, 1] == player && board[0, 2] == player) return true;
        if (board[1, 0] == player && board[1, 1] == player && board[1, 2] == player) return true;
        if (board[2, 0] == player && board[2, 1] == player && board[2, 2] == player) return true;

        // check vertical
        if (board[0, 0] == player && board[1, 0] == player && board[2, 0] == player) return true;
        if (board[0, 1] == player && board[1, 1] == player && board[2, 1] == player) return true;
        if (board[0, 2] == player && board[1, 2] == player && board[2, 2] == player) return true;

        // check diagonals
        if (board[2, 0] == player && board[1, 1] == player && board[0, 2] == player) return true;
        if (board[0, 0] == player && board[1, 1] == player && board[2, 2] == player) return true;

        return false;
    }
}

public class Player
{
    public int playerNumber { get; private set; }

    public Player(int plNumber)
    {
        this.playerNumber = playerNumber;
    }

}