/// <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));
}
