示例#1
0
        public void Execute(string command)
        {
            if (string.IsNullOrWhiteSpace(command))
            {
                return;
            }

            if (command == "MOVE")
            {
                _toyRobot.Move();
            }
            if (command == "LEFT")
            {
                _toyRobot.Left();
            }
            if (command == "RIGHT")
            {
                _toyRobot.Right();
            }
            if (command == "REPORT")
            {
                Console.WriteLine(_toyRobot.Report());
            }

            var match = _placeCommand.Match(command);

            if (match.Success)
            {
                var xIsValid  = int.TryParse(match.Groups[1].Value, out var x);
                var yIsValid  = int.TryParse(match.Groups[2].Value, out var y);
                var direction = match.Groups[3].Value;
                if (xIsValid && yIsValid)
                {
                    _toyRobot.Place(x, y, direction);
                }
            }
        }
示例#2
0
        static void Main(string[] args)
        {
            Console.WriteLine("Welcome to the Toy Robot Simulator");
            Console.WriteLine();
            Console.WriteLine("The application is a simulation of a toy robot moving on a square tabletop, of dimensions 5 units x 5 units.");
            Console.WriteLine("There are no other obstructions on the table surface.");
            Console.WriteLine("The origin (0,0) can be considered to be the SOUTH WEST most corner");
            Console.WriteLine();
            Console.WriteLine("The following commands can be used to interact with the robot:");
            Console.WriteLine(" - PLACE X,Y,F => PLACE will put the toy robot on the table in position X,Y and facing NORTH, SOUTH, EAST or WEST");
            Console.WriteLine(" - MOVE => MOVE will move the toy robot one unit forward in the direction it is currently facing");
            Console.WriteLine(" - LEFT / RIGHT => LEFT and RIGHT will rotate the robot 90 degrees in the specified direction without changing the position of the robot");
            Console.WriteLine(" - REPORT => REPORT will announce the X,Y and F of the robot");
            Console.WriteLine(" - EXIT => REPORT will exit and close the simulator");

            var toyRobot = new ToyRobot();

            while (true)
            {
                var input = Console.ReadLine().ToUpper().Trim();

                if (input.Equals("exit", StringComparison.OrdinalIgnoreCase))
                {
                    break;
                }

                try
                {
                    switch (input)
                    {
                    case var someVal when new Regex(@"(PLACE) [0-4],[0-4],(NORTH|SOUTH|EAST|WEST)").IsMatch(someVal):
                        string parameters = someVal.Replace("PLACE ", string.Empty);
                        int    x          = int.Parse(parameters.Substring(0, 1));
                        int    y          = int.Parse(parameters.Substring(2, 1));
                        string facing     = parameters.Substring(4);
                        switch (facing)
                        {
                        case "NORTH":
                            toyRobot.Place(x, y, Facing.North);
                            break;

                        case "SOUTH":
                            toyRobot.Place(x, y, Facing.South);
                            break;

                        case "EAST":
                            toyRobot.Place(x, y, Facing.East);
                            break;

                        case "WEST":
                            toyRobot.Place(x, y, Facing.West);
                            break;
                        }
                        break;

                    case "MOVE":
                        toyRobot.Move();
                        break;

                    case "LEFT":
                        toyRobot.Left();
                        break;

                    case "RIGHT":
                        toyRobot.Right();
                        break;

                    case "REPORT":
                        Console.WriteLine(toyRobot.Report());
                        break;

                    default:
                        Console.WriteLine("Not a valid command! Please try again.");
                        break;
                    }
                }
                catch (NoValidPlaceCommandExecutedException)
                {
                    Console.WriteLine("No valid Place command previously executed! Please try again");
                }
                catch (RobotWillFallException)
                {
                    Console.WriteLine("This move will make the robot fall! Please try again");
                }
            }
        }