/// <summary>
/// Calls Next with direction as increment of _f
/// </summary>
public void TurnLeft()
{
_f = DirectionUtilities.Next(_f.Value);
}
/// <summary>
/// Calls Previous with direction as decrement of _f
/// </summary>
public void TurnRight()
{
_f = DirectionUtilities.Previous(_f.Value);
}
/// <summary>
/// Handles command. Requires valid placement to occur before executing any other command
/// </summary>
/// <param name="command"></param>
/// <returns>bool</returns>
public bool ExecuteCommand(string[] command)
{
if (command == null || command.Length == 0)
{
throw new ArgumentNullException("Command is Null or Empty.");
}
if (CanUseCaseInsensitiveRobotCommands())
{
if (!string.IsNullOrEmpty(command[0]))
{
command[0] = command[0].ToUpper();
}
if (command.Length == 4 && !string.IsNullOrEmpty(command[3]))
{
command[3] = command[3].ToUpper();
}
}
switch (command[0])
{
case CommandNames.PlaceCommandName:
if (command.Length < 4)
{
throw new Exception(string.Format("Not enough parameters. Expected 4, received {0}", command.Length));
}
int x;
if (!int.TryParse(command[1], out x))
{
throw new Exception(string.Format("PLACE parameter 1 is not a proper integer: {0}", command[1]));
}
int y;
if (!int.TryParse(command[2], out y))
{
throw new Exception(string.Format("PLACE parameter 2 is not a proper integer: {0}", command[2]));
}
RobotDirection direction;
if (!DirectionUtilities.TryParse(command[3], out direction))
{
throw new Exception(string.Format("PLACE parameter 3 is not a proper direction: {0}", command[3]));
}
IPlacementRequest placementRequest = new PlacementRequest()
{
X = x, Y = y, F = direction
};
_placeCommandHasBeenExecuted = _rob.Place(placementRequest);
break;
case CommandNames.MoveCommandName:
if (_placeCommandHasBeenExecuted)
{
_rob.Move();
}
else
{
throw new Exception("Attempted to use the robot before it has been placed");
}
break;
case CommandNames.LeftCommandName:
if (_placeCommandHasBeenExecuted)
{
_rob.TurnLeft();
}
else
{
throw new Exception("Attempted to use the robot before it has been placed");
}
break;
case CommandNames.RightCommandName:
if (_placeCommandHasBeenExecuted)
{
_rob.TurnRight();
}
else
{
throw new Exception("Attempted to use the robot before it has been placed");
}
break;
case CommandNames.ReportCommandName:
if (_placeCommandHasBeenExecuted)
{
Console.WriteLine("\t\t======================");
_rob.Report();
Console.WriteLine("\t\t======================");
}
else
{
throw new Exception("Attempted to use the robot before it has been placed");
}
break;
case CommandNames.ExitCommandName:
case CommandNames.QuitCommandName:
System.Environment.Exit(0);
break;
default:
throw new Exception("Command not listed!");
}
return(_placeCommandHasBeenExecuted);
}