/// <summary> /// Instantiates a new Rover instance given the initial position coordinates, the initial direction /// and provides the Rover with an obstacle detection system /// </summary> /// <param name="initialPositionX">The starting X position on planet surface</param> /// <param name="initialPositionY">The starting Y position on planet surface</param> /// <param name="direction">The starting direction on planet surface</param> /// <param name="obstacleDetector">The obstacle detection system is mandatory for safely reasons</param> /// <returns></returns> public static Rover Create(int initialPositionX, int initialPositionY, string direction, ObstacleDetector obstacleDetector) { if (obstacleDetector == null) { throw new ArgumentNullException($"{nameof(obstacleDetector)}"); } var initialPosition = Coordinates.Create(initialPositionX, initialPositionY); var initialDirection = DirectionsList.GetByCode(direction); if (initialDirection == null) { throw new ArgumentException($"{nameof(initialDirection)} was not recognized as valid direction"); } Rover newRover = new Rover(); newRover.Position = initialPosition; newRover.Direction = initialDirection; newRover.obstacleDetector = obstacleDetector; return(newRover); }
public Direction TurnLeft() { var nextDirectionIndex = Convert.ToByte((this.Index + DirectionsList.AllDirections.Count - 1) % DirectionsList.AllDirections.Count); return(DirectionsList.GetByIndex(nextDirectionIndex)); }