private PlaceParameters ParsePlaceParameters(string command)
{
string withoutPlaceWord = command.Remove(0, Place.Length);
string[] parameters = withoutPlaceWord.Split(',');
if (parameters.Length < 3)
{
return(null);
}
int x, y;
if (!int.TryParse(parameters[0], out x))
{
return(null);
}
if (!int.TryParse(parameters[1], out y))
{
return(null);
}
PlaceParameters placeParameters = new PlaceParameters(x, y, parameters[2]);
if (placeParameters.Heading == CardinalPoint.Undefined)
{
throw new ArgumentException("Cannot move to nowhere");
}
return(placeParameters);
}
public string[] Process(string[] args)
{
List <string> responses = new List <string>();
foreach (string arg in args)
{
var command = arg.ToLower();
if (command.StartsWith(Place))
{
PlaceParameters place = ParsePlaceParameters(command);
if (place != null)
{
robot.Place(place.X, place.Y, place.Heading);
}
continue;
}
if (command == "report" && robot.IsPlaced)
{
responses.Add(robot.Position.ToString());
continue;
}
switch (command)
{
case "move":
robot.Move();
continue;
case "left":
robot.TurnLeft();
continue;
case "right":
robot.TurnRight();
continue;
default:
continue;
}
}
return(responses.ToArray());
}
