spieleprogrammierer.de - Forum und Wiki zur Spieleprogrammierung und Spieleentwicklung

C#-Quelltext

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace FirstProgram
{
    class Game
    {

        string[,] _fields = new string[9,9];
        string[] _FieldUsed = new String[9];
        
        int _playerNumber = 2;
        int _lastMove = 0;
        char _playerSymbol = 'O';
        bool _KI = false;

        internal Game()
        {
            showMenu();
        }

        private void showMenu()
        {
            bool quit = false;
            do
            {
                Console.Clear();
                Console.WriteLine("Hello! Welcome to TicTacToe!");
                Console.WriteLine("1: 1 Player: Start Game");
                Console.WriteLine("2: 2 Players: Start Game");
                Console.WriteLine("3: Quit Game");

                string select = "0";
                while (select != "1" && select != "2" && select != "3")
                {
                    select = Console.ReadLine();
                    if (select == "1")
                    {
                        _KI = true;
                        Console.Clear();
                        prepareGame();
                    }
                    else if (select == "2")
                    {
                        _KI = false;
                        Console.Clear();
                        prepareGame();
                    }
                    else if (select == "3")
                    {
                        quit = true;
                    }
                    else
                    {
                        Console.WriteLine("Wrong Input, try again!");
                    }
                }
            } while (!quit);

        }

        private void prepareGame()
        {

            do
            {
                for (int i = 0; i < 9; i++)
                {
                    _FieldUsed[i] = "";
                    for (int j = 0; j < 9; j++)
                    {
                        _fields[i,j] = " ";
                        if (j == 4)
                            _fields[i,j] = "" + (i + 1);
                    }
                }
                DrawBoard();
                Round();
            } while (Restart());
        }

        private void Round()
        {
            do
            {
                changePlayer();
                Move();
                DrawBoard();
            } while (!checkGameOver());
        }

        private bool Restart()
        {
            Console.WriteLine("Do you want to start another round? (y/n)");
            string select = "";
            bool restart = false;
            do
            {
                select = Console.ReadLine().ToUpper();
                if (select == "Y")
                {
                    changePlayer();
                    restart = true;
                }
                else if (select == "N")
                {
                    restart = false;
                }
                else
                {
                    Console.WriteLine("Wrong Input. Try Again!");
                }
            }
            while (select != "Y" && select != "N");
            return restart;
        }

        private void Move()
        {
            if (_KI == true && _playerNumber == 2)
            {
                _lastMove = MoveKI(); 
                _FieldUsed[_lastMove] = "" + _playerSymbol;
                drawSymbol(ref _fields, _lastMove, _playerNumber);

            }
            else
            {
                int playerMove;
                String input;
                Console.WriteLine("Player {0}", _playerNumber);
                Console.Write("Please make your turn: ");
                bool validMove = false;
                do
                {
                    input = Console.ReadLine();
                    if (int.TryParse(input, out playerMove) && playerMove <= 9)
                    {
                        if (_FieldUsed[playerMove - 1] == "")
                        {
                            _FieldUsed[playerMove - 1] = Convert.ToString(_playerSymbol);
                            drawSymbol(ref _fields, (playerMove - 1), _playerNumber);
                            _lastMove = playerMove - 1;
                            validMove = true;
                        }
                        else
                        {
                            Console.WriteLine("Invalid Move. Try Again!");
                        }
                    }
                    else
                    {
                        Console.WriteLine("Invalid Input. Try Again!");
                    }
                } while (!validMove);
            }
        }

        private int MoveKI()
        {
            int moveKI = -1;
            //überprüfe auf mögliche Siegzüge
            for (int i = 0; i < 9; i++)
            {
                if (_FieldUsed[i] == "")
                {

                    _FieldUsed[i] = "" + _playerSymbol; 
                    if (checkWin(i) == true) 
                    {
                        moveKI = i;
                        break;
                    }
                    else 
                    {
                        _FieldUsed[i] = "";
                    }
                }
            }
            // überprüfe mögliche Siegzüge des Gegners
            if (moveKI == -1)
            {
                for (int i = 0; i < 9; i++)
                {
                    if (_FieldUsed[i] == "")
                    {
                        _FieldUsed[i] = "X";
                        if (checkWin(i) == true)
                        {
                            _FieldUsed[i] = "";
                            moveKI = i;
                            break;
                        }
                        else
                        {
                            _FieldUsed[i] = "";
                            
                        }
                    }
                }
                //Wenn kein eigener oder gegnerischer Sieg direkt möglich ist, führe zufälligen Zug aus.
                if (moveKI == -1)
                {
                    Random random = new Random();
                    bool moveFound = false;
                    do
                    {
                        int randomMove = random.Next(0, 8);
                        if (_FieldUsed[randomMove] == "")
                        {
                            moveKI = randomMove;
                            moveFound = true;
                        }
                    } while (!moveFound);
                }
            }
            return moveKI;

        }

        //den freien Platz durch das Spielersymbol ändern.
        private void drawSymbol(ref String[,] array, int feld, int playerNumber)
        {
            if (playerNumber == 1)
            {
                array[feld,0] = "X";
                array[feld,2] = "X";
                array[feld,4] = "X";
                array[feld,6] = "X";
                array[feld,8] = "X";
            }
            else if (playerNumber == 2)
            {
                array[feld,1] = "O";
                array[feld,3] = "O";
                array[feld,4] = " ";
                array[feld,5] = "O";
                array[feld,7] = "O";
            }
        }

        private bool checkGameOver()
        {
            if (checkWin(_lastMove) == true)
            {
                Console.WriteLine("Player " + _playerNumber + " has won!");
                return true;
            }
            else
            {
                foreach (string tempElement in _FieldUsed)
                {
                    if (tempElement == "")
                    {
                        return false;
                    }
                }
                Console.WriteLine("No possible moves left. Game Over");
                return true;
            }
        }

        private bool checkWin(int move)
        {
            //überprüfe horizontale Siegmöglichkeiten
            int tempCoord = move / 3;
            if (_FieldUsed[tempCoord * 3] == _FieldUsed[tempCoord * 3 + 1] && _FieldUsed[tempCoord * 3] == _FieldUsed[tempCoord * 3 + 2])
            {
                return true;
            }
            //überprüfe vertikale Siegmöglichkeiten
            tempCoord = _lastMove % 3;
            if (_FieldUsed[tempCoord] == _FieldUsed[tempCoord + 3] && _FieldUsed[tempCoord] == _FieldUsed[tempCoord + 6])
            {
                return true;
            }
            //überprüfe diagonale Siegmöglichkeiten
            else if ((_FieldUsed[0] == _FieldUsed[4] && _FieldUsed[0] == _FieldUsed[8] || _FieldUsed[2] == _FieldUsed[4] && _FieldUsed[2] == _FieldUsed[6]) &&
                    _FieldUsed[4] != "")
            {
                return true;
            }
            else
            {
                return false;
            }
        }

        private void changePlayer()
        {
            if (_playerNumber == 1)
            {
                _playerNumber = 2;
                _playerSymbol = 'O';
            }
            else
            {
                _playerNumber = 1;
                _playerSymbol = 'X';
            }
        }

                private void DrawBoard()
        {
            Console.Clear();
            for (int outerXCoord = 0; outerXCoord <= 6; outerXCoord += 3)
            {

                for (int innerXCoord = 0; innerXCoord <= 6; innerXCoord += 3)
                {
                    for (int outerYCoord = 0; outerYCoord < 3; outerYCoord++)
                    { 
                        for (int innerYCoord = 0; innerYCoord < 3; innerYCoord++)
                        {
                            Console.Write(_fields[(outerXCoord + outerYCoord), (innerXCoord + innerYCoord)]);
                        }
                        if (outerYCoord < 2)
                            Console.Write("|");
                    }
                    Console.WriteLine();
                }
                if (outerXCoord < 6)
                    Console.WriteLine("---|---|---");
            }
            Console.WriteLine();
        }

        static void Main(string[] args)
        {
            Game game = new Game();
        }
    }
}