private IRoverPosition Move(IRoverPosition starPosition)
{
IRoverPosition endPosition = new RoverPosition()
{
Direction = starPosition.Direction, X = starPosition.X, Y = starPosition.Y
};
if (endPosition.Direction == Directions.North)
{
endPosition.Y += 1;
}
if (endPosition.Direction == Directions.South)
{
endPosition.Y -= 1;
}
if (endPosition.Direction == Directions.East)
{
endPosition.X += 1;
}
if (endPosition.Direction == Directions.West)
{
endPosition.X -= 1;
}
ValidateRover(starPosition, endPosition);
starPosition = endPosition;
return(starPosition);
}
public List <string> Command(string[] commandList)
{
if (commandList.Length >= 3 && commandList.Length % 2 == 1)
{
var moveHelper = new MoveHelper();
var roverPositionList = new List <RoverPosition>();
var expectedPositionList = new List <string>();
var areaOfRover = CreateRoverArea(commandList[0]);
RoverPosition firstPosition = null;
for (int i = 1; i < commandList.Length; i++)
{
var modeOfCommand = (i - 1) % 2;
if (modeOfCommand == 0)
{
firstPosition = RoverLocation(commandList[i], areaOfRover);
}
else
{
roverPositionList.Add(moveHelper.RoverMove(commandList[i], firstPosition, commandList[0]));
}
}
foreach (var roverPosition in roverPositionList)
{
string roverDirection = DirectionConvertToString(roverPosition.Direction);
expectedPositionList.Add($"{roverPosition.Coordinate.X} {roverPosition.Coordinate.Y} {roverDirection}");
}
return(expectedPositionList);
}
else
{
throw new ArgumentException("Invalid character for command");
}
}
public static RoverPosition TurnRight(RoverPosition pos)
{
switch (pos.Facing)
{
case 'N':
pos.Facing = 'E';
break;
case 'S':
pos.Facing = 'W';
break;
case 'W':
pos.Facing = 'N';
break;
case 'E':
pos.Facing = 'S';
break;
default:
break;
}
return(pos);
}
public Rover CreateRover(string positionCommand, string instructionCommand)
{
try
{
var positionList = positionCommand.Split(" ");
ValidateRoverPosition(positionList);
var orientation = positionList[2];
if (!int.TryParse(positionList[0], out int x) || !int.TryParse(positionList[1], out int y))
{
_logger.LogError("Rover position is not valid.");
throw new ArgumentException();
}
var position = new RoverPosition
{
X = x,
Y = y,
OrientationValue = orientation
};
return(new Rover
{
InstructionCommand = instructionCommand,
StartPosition = position,
LastPosition = position
});
}
catch (Exception ex)
{
_logger.LogError("Error when create Rover: ");
throw ex;
}
}
public RoverPosition RoverMove(string command, RoverPosition firstPosition, string maxLocation)
{
var roverLocation = new RoverPosition();
var rgx = new Regex("^[LRM]+$");
if (rgx.IsMatch(command))
{
foreach (var item in command)
{
switch (item)
{
case 'L':
roverLocation = LeftMove(firstPosition);
break;
case 'R':
roverLocation = RightMove(firstPosition);
break;
case 'M':
roverLocation = MidMove(firstPosition, maxLocation);
break;
}
}
}
else
{
throw new ArgumentException($"Invalid character for move value");
}
return(roverLocation);
}
public IEnumerable <RoverPosition> Get()
{
// Initialize the environment
_environmentService.MaxX = 5;
_environmentService.MaxY = 5;
try
{
// Test1
var start = new RoverPosition()
{
Name = "Rover1", Direction = 'N', X = 1, Y = 2
};
string command = "LMLMLMLMM";
// 1 3 N
var end1 = _roverService.Navigate(start, command);
// Test2
start = new RoverPosition()
{
Name = "Rover2", Direction = 'E', X = 3, Y = 3
};
command = "MMRMMRMRRM";
// 5 1 E
var end2 = _roverService.Navigate(start, command);
return(new RoverPosition[] { end1, end2 });
}
catch
{ }
return(null);
}
private RoverPosition TurnRight(RoverPosition start)
{
switch (start.Direction)
{
case 'E':
start.Direction = 'S';
break;
case 'S':
start.Direction = 'W';
break;
case 'W':
start.Direction = 'N';
break;
case 'N':
start.Direction = 'E';
break;
default:
break;
}
return(start);
}
public RoverPosition MidMove(RoverPosition roverPosition, string maxLocation)
{
var maxCoordinate = maxLocation.Split(' ');
var maxCoordinateX = Convert.ToInt32(maxCoordinate[0]);
var maxCoordinateY = Convert.ToInt32(maxCoordinate[1]);
if (roverPosition.Coordinate.X <= maxCoordinateX && roverPosition.Coordinate.Y <= maxCoordinateY)
{
switch (roverPosition.Direction)
{
case DirectionType.North:
roverPosition.Coordinate.Y++;
break;
case DirectionType.South:
roverPosition.Coordinate.Y--;
break;
case DirectionType.East:
roverPosition.Coordinate.X++;
break;
case DirectionType.West:
roverPosition.Coordinate.X--;
break;
}
}
else
{
throw new ArgumentException("Your move command is out of area.");
}
return(roverPosition);
}
/// <summary>
/// Simulate all moves according to user position step by step
/// </summary>
/// <param name="userAndMoves"> user last position and next moves</param>
/// <returns></returns>
/// <summary>
/// Fill user and moves
/// </summary>
/// <returns></returns>
private Tuple <RoverPosition, string> getRoverAndMoves()
{
RoverPosition user = getRoverDetailFromInput();
string userMoves = getSafeStringFromUser()[0];
return(new Tuple <RoverPosition, string>(user, userMoves));
}
private static void isValidPosition(RoverPosition roverPosition, int maxXCoordinate, int maxYCoordinate)
{
if (roverPosition.CurrentXIndex > maxXCoordinate || roverPosition.CurrentXIndex < 0 || roverPosition.CurrentYIndex > maxYCoordinate || roverPosition.CurrentYIndex < 0)
{
throw new Exception(string.Concat("OutOfSurface for user: ", roverPosition.ToString()));
}
}
public RoverPosition Navigate(RoverPosition start, string command)
{
char[] actions = command.ToCharArray();
for (var i = 0; i < actions.Length; i++)
{
switch (actions[i])
{
case 'L':
start = TurnLeft(start);
break;
case 'R':
start = TurnRight(start);
break;
case 'M':
start = Move(start);
break;
default:
break;
}
}
return(start);
}
private RoverPosition Move(RoverPosition start)
{
var backup = new RoverPosition()
{
Name = start.Name, Direction = start.Direction, X = start.X, Y = start.Y
};
switch (start.Direction)
{
case 'E':
start.X++;
break;
case 'S':
start.Y--;
break;
case 'W':
start.X--;
break;
case 'N':
start.Y++;
break;
default:
break;
}
// Validate the movement
return(_environmentSerive.ValidateMove(start)?start : backup);
}
private RoverPosition ParsePosition(string roverPositionInput)
{
var roverPositionArray = roverPositionInput.Split(' ');
if (roverPositionArray.Length == 3)
{
string orientation = roverPositionArray[2].ToUpper();
if (orientation.Equals("N", StringComparison.InvariantCultureIgnoreCase) ||
orientation.Equals("S", StringComparison.InvariantCultureIgnoreCase) ||
orientation.Equals("E", StringComparison.InvariantCultureIgnoreCase) ||
orientation.Equals("W", StringComparison.InvariantCultureIgnoreCase))
{
RoverPosition roverPosition = new RoverPosition()
{
Orientation = (Orientation)Enum.Parse(typeof(Orientation), orientation),
X = int.Parse(roverPositionArray[0]),
Y = int.Parse(roverPositionArray[1])
};
return(roverPosition);
}
}
return(null);
}
public void TestRoverPositionEquality()
{
var position1 = new RoverPosition(new Point(1, 1), MarsRover.CardinalDirection.East);
var position2 = new RoverPosition(new Point(1, 1), MarsRover.CardinalDirection.East);
Assert.IsTrue(position1.GetHashCode().Equals(position2.GetHashCode()));
Assert.IsTrue(position1.Equals(position2));
}
public void SetUp_Rover()
{
var roverPosition = new RoverPosition {
Coordinate = new Point(5, 2), Heading = Heading.S
};
_rover = new Rover(roverPosition);
}
public IExecutionResult DeployRover(string roverPositionInput, Identity plateauSurfaceId)
{
RoverPosition roverPosition = ParsePosition(roverPositionInput);
Emit(new DeployRoverEvent(roverPosition, plateauSurfaceId));
return(ExecutionResult.Success());
}
public RoverPosition GetUpdatedPositionOnExecutingCommand(char instruction, RoverPosition position)
{
if (Instruction.Move == (Instruction)instruction)
{
return(_action.MoveForward(position));
}
return(_action.Rotate(position, (Instruction)instruction));
}
public RoverPosition Rotate(RoverPosition position, Instruction instruction)
{
if (Instruction.Left == instruction)
{
return(GetPositionOnLeftRotate(position));
}
return(GetPositionOnRightRotate(position));
}
private static void ManageRovers()
{
IRoverEngineService roverEngineService = new RoverEngineService();
List <ValidationErrors> validationErrors = new List <ValidationErrors>();
string roverCurrentPosition = string.Empty;
string roverNavigationInstruction = string.Empty;
List <RoverPosition> completedRoverPositions = new List <RoverPosition>();
RoverPosition currentRoverPosition = new RoverPosition();
Console.WriteLine("Please enter the boundaries of the grid followed by a line for the current position of the rover \n and a line for the exploration path the rover needs to follow. Once all the information has been entered please enter \\ to send instructions to the rovers.");
string input = string.Empty;
do
{
input = Console.ReadLine();
userInput.Add(input);
} while (input != "\\");
if (!roverEngineService.ValidateUserInput(userInput, out validationErrors))
{
Console.WriteLine("The following errors occured in given input");
foreach (var validationError in validationErrors)
{
Console.WriteLine(string.Format("Line No.{0}:{1}", validationError.LineNo, validationError.ValidationMessage));
}
Console.ReadLine();
return;
}
roverEngineService.SetGridBoundaries(marsGrid, userInput[0]);
for (int index = 1; index < userInput.Count; index++)
{
if (index % 2 == 0)
{
try
{
completedRoverPositions.Add(roverEngineService.NavigateRover(marsGrid, currentRoverPosition, userInput[index]));
}
catch (PlanetOutOfBoundsException ex)
{
Console.WriteLine("Error on Rover No. {0}.{1}", (index / 2), ex.Message);
}
}
else
{
currentRoverPosition = roverEngineService.GetRoverPosition(userInput[index]);
}
}
foreach (var item in completedRoverPositions)
{
Console.WriteLine("{0} {1} {2}", item.XPosition, item.YPosition, item.Direction);
}
Console.ReadLine();
}
public RoverPosition RoverLocation(string command, List <Coordinate> areaOfRover)
{
var roverLocation = new RoverPosition();
var location = command.Split(' ');
if (location.Length == 3)
{
var direction = DirectionType.None;
if (!int.TryParse(location[0], out var xCoordinate))
{
throw new ArgumentException("Invalid character for X value.");
}
if (!int.TryParse(location[1], out var yCoordinate))
{
throw new ArgumentException("Invalid character for Y value.");
}
switch (location[2])
{
case "N":
direction = DirectionType.North;
break;
case "S":
direction = DirectionType.South;
break;
case "E":
direction = DirectionType.East;
break;
case "W":
direction = DirectionType.West;
break;
}
if (direction.Equals(DirectionType.None))
{
throw new ArgumentException("Invalid character for direction value");
}
var coordinate = new Coordinate {
X = xCoordinate, Y = yCoordinate
};
var isCoordinateOnArea = areaOfRover.FirstOrDefault(x => x.X == xCoordinate && x.Y == yCoordinate);
if (isCoordinateOnArea == null)
{
throw new ArgumentException("Rover's first location is out of area.");
}
roverLocation = new RoverPosition {
Direction = direction, Coordinate = coordinate
};
}
return(roverLocation);
}
public RoverBase(RoverPosition firstRoverPosition, RoverPosition secondRoverPosition, Plateau plateau)
{
this.firstRoverPosition = firstRoverPosition;
this.secondRoverPosition = secondRoverPosition;
this.plateau = plateau;
ConfirmConstructor();
this.plateau.ConfirmPlateauIsValid();
}
public void RoverPosition_Should_Be_Changed_By_Control_Signal(RoverPosition position,
RoverControlSignal controlSignal, RoverPosition expectedPosition)
{
var newPosition = position.CalculateNewPosition(controlSignal);
newPosition.X.ShouldBe(expectedPosition.X);
newPosition.Y.ShouldBe(expectedPosition.Y);
newPosition.Heading.ShouldBe(expectedPosition.Heading);
}
public void LastRoverPosition_Should_Be_Calculated(RoverPosition position, RoverControlSignal[] controlSignals,
RoverPosition expectedPosition)
{
var newPosition = position.CalculateLastPosition(controlSignals);
newPosition.X.ShouldBe(expectedPosition.X);
newPosition.Y.ShouldBe(expectedPosition.Y);
newPosition.Heading.ShouldBe(expectedPosition.Heading);
}
public string GetRoversCurrentPosition([FromBody] RoverPosition roverPosition)
{
if (ModelState.IsValid)
{
return(_roverMovementService.RoverMovement(roverPosition));
}
return("Please provide valid inputs");
}
public void ShouldParseValidInput()
{
var parser = new RoverPositionParser();
var result = parser.Parse("1 2 W");
var expected = new RoverPosition(new Coordinate(1, 2), Compass.West);
result.Direction.ShouldEqual(expected.Direction);
result.Coordinate.X.ShouldEqual(result.Coordinate.X);
result.Coordinate.Y.ShouldEqual(result.Coordinate.Y);
}
public void RoverPosition_Should_Be_Created_From_Position_Format(string positionFormat, int x, int y,
CardinalCompassPoint heading)
{
var roverPosition = RoverPosition.CreateFromPositionFormat(positionFormat);
roverPosition.X.ShouldBe(x);
roverPosition.Y.ShouldBe(y);
roverPosition.Heading.ShouldBe(heading);
}
public void FinalPosition_Position3_MovementSignals3_ReturnSuccess()
{
var roverCurrentPosition = new RoverPosition()
{
Plateau = "5 5", Position = "2 3 W", MovementSignals = "MMLMMLMM"
};
IRoverMovementService roverMovement = new RoverMovementService();
Assert.Equal("2 1 E", roverMovement.RoverMovement(roverCurrentPosition));
}
public void FinalPosition_Position2_MovementSignals2_ReturnSuccess()
{
var roverCurrentPosition = new RoverPosition()
{
Plateau = "5 5", Position = "3 3 E", MovementSignals = "MMRMMRMRRM"
};
IRoverMovementService roverMovement = new RoverMovementService();
Assert.Equal("5 1 E", roverMovement.RoverMovement(roverCurrentPosition));
}
public void FinalPosition_Position1_MovementSignals1_ReturnSuccess()
{
var roverCurrentPosition = new RoverPosition()
{
Plateau = "5 5", Position = "1 2 N", MovementSignals = "LMLMLMLMM"
};
IRoverMovementService roverMovement = new RoverMovementService();
Assert.Equal("1 3 N", roverMovement.RoverMovement(roverCurrentPosition));
}
public void TestSenario_DirectionS_TurnLeft()
{
var expectedOutput = Direction.E;
var userPosition = new RoverPosition(0, 0, Direction.S);
userPosition.TurnLeft();
var actualOutput = userPosition.Direction;
Assert.AreEqual(expectedOutput, actualOutput);
}
public void Put([FromBody] RoverPosition max)
{
try
{
_environmentService.MaxX = max.X;
_environmentService.MaxY = max.Y;
}
catch
{ }
}