public BoardElements CheckLeftCell(string[,] border)
        {
            switch (border[this.pacManPos.Y, this.pacManPos.X - 1])
            {
                case "#":
                    return BoardElements.Wall;
                    break;
                case ".":
                    return BoardElements.Dot;
                    break;

               case "☻":
                    return BoardElements.Monster;
                    break;
            }
            return BoardElements.Empty;
        }
        public BoardElements CheckUpperCell(string[,] border)
        {
            switch (border[this.pacManPos.Y + 1, this.pacManPos.X])
            {
               case "#":
                    return BoardElements.Wall;
                    break;
                case ".":
                    return BoardElements.Dot;
                    break;

               case "☻":
                    return BoardElements.Monster;
                    break;
            }
            return BoardElements.Empty;
        }
        public BoardElements CheckLowerCell(string[,] border)
        {
            switch (border[this.pacManPos.Y - 1, this.pacManPos.X])
            {
              case "#":
                    return BoardElements.Wall;
                    break;
                case ".":
                    return BoardElements.Dot;
                    break;

               case "☻":
                    return BoardElements.Monster;
                    break;
            }
            return BoardElements.Empty;
        }
    }
}