#31

        static void Main(string[] args)
        {
            const string CreateMapCommand = "1";
            const string StartPlayCommand = "2";
            const string ExitMenuCommand = "3";

            bool isWorking = true;

            char[,] map = new char[0, 0];
            char symbolWall = ' ';

            while (isWorking)
            {
                Console.Clear();
                Console.WriteLine("1 <=== Создать карту \n2 <=== Начать игру \n3 <=== Выход");
                string input = Console.ReadLine();

                switch (input)
                {
                    case CreateMapCommand:
                        CreateMap(ref map, ref symbolWall);
                        break;

                    case StartPlayCommand:
                        PlayGame(map, symbolWall);
                        break;

                    case ExitMenuCommand:
                        isWorking = false;
                        break;
                }
            }
        }

        private static void CreateMap(ref char[,] map, ref char symbolWall)
        {
            Console.Write("Введите размер стен карты: ");
            int mapSize = Convert.ToInt32(Console.ReadLine());

            Console.Write("Введите символ для отрисовки стен: ");
            symbolWall = Convert.ToChar(Console.ReadLine());

            map = new char[mapSize, mapSize];

            BuilderMapWall(map, symbolWall);

            Console.WriteLine("Нажмите любую клавишу для продолжения");
            Console.ReadKey();
        }

        private static void BuilderMapWall(char[,] map, char symbolWall)
        {
            int firstPosition = 0;
            int offsetStep = 1;

            for (int i = 0; i < map.GetLength(0); i++)
            {
                map[firstPosition, i] = symbolWall;
                map[map.GetLength(1) - offsetStep, i] = symbolWall;
            }

            for (int i = 1; i < map.GetLength(0) - 1; i++)
            {
                map[i, firstPosition] = symbolWall;
                map[i, map.GetLength(0) - offsetStep] = symbolWall;
            }
        }

        static void DrawMap(char[,] map)
        {
            for (int i = 0; i < map.GetLength(0); i++)
            {
                for (int j = 0; j < map.GetLength(1); j++)
                {
                    Console.Write(map[i, j]);
                }

                Console.WriteLine();
            }
        }

        private static void PlayGame(char[,] map, char symbolWall)
        {
            Console.Write("Введите символ для отображения персонажа: ");
            char playerChar = Convert.ToChar(Console.ReadLine());

            bool gameStarted = true;

            int playerPositionX = 2;
            int playerPositionY = 1;

            Console.CursorVisible = false;

            while (gameStarted)
            {
                Console.Clear();
                DrawMap(map);

                Console.SetCursorPosition(playerPositionX, playerPositionY);
                Console.Write(playerChar);

                MovmentController(map, ref playerPositionX, ref playerPositionY, symbolWall);
            }
        }

        static void MovmentController(char[,] map, ref int positionX, ref int positionY, char symbolWall)
        {
            ConsoleKeyInfo charKey = Console.ReadKey();

            switch (charKey.Key)
            {
                case ConsoleKey.UpArrow:
                    MovePlayerPosition(map, charKey, positionX, positionY - 1, ref positionY, symbolWall);
                    break;

                case ConsoleKey.DownArrow:
                    MovePlayerPosition(map, charKey, positionX, positionY + 1, ref positionY, symbolWall);
                    break;

                case ConsoleKey.LeftArrow:
                    MovePlayerPosition(map, charKey, positionX - 1, positionY, ref positionX, symbolWall);
                    break;

                case ConsoleKey.RightArrow:
                    MovePlayerPosition(map, charKey, positionX + 1, positionY, ref positionX, symbolWall);
                    break;
            }
        }

        static void MovePlayerPosition(char[,] map, ConsoleKeyInfo charKey, int positionX, int positionY, ref int position, char symbolWall)
        {
            bool isWall = false;

            CheckBorder(map, positionX, positionY, ref isWall, symbolWall);
            MovePlayer(charKey, ref position, isWall);
        }

        static bool CheckBorder(char[,] map, int positionX, int positionY, ref bool isWall, char symbolWall)
        {
            if (map[positionX, positionY] == symbolWall)
            {
                isWall = true;
            }

            return isWall;
        }

        static void MovePlayer(ConsoleKeyInfo charKey, ref int position, bool isWall)
        {
            if (isWall == false)
            {
                if (charKey.Key == ConsoleKey.DownArrow || charKey.Key == ConsoleKey.RightArrow)
                {
                    position++;
                }
                else if (charKey.Key == ConsoleKey.UpArrow || charKey.Key == ConsoleKey.LeftArrow)
                {
                    position--;
                }
            }
        }