/// <summary>
/// Checks if the position is within the boundary of grid
/// </summary>
/// <param name="position"></param>
/// <returns></returns>
private bool CheckRoverIsInPlateauBoundary(RoverPosition position)
{
if (position.x < 0 || position.y < 0 || position.x > PlateauGridDimensions.x || position.y > PlateauGridDimensions.y)
{
return(false);
}
else
{
return(true);
}
}
/// <summary>
/// Moves rover one position ahead in the direction it is facing
/// </summary>
/// <returns></returns>
private RoverPosition MoveAheadInTheSameDirection()
{
RoverPosition newPosition = this.roverPosition;
Direction currentDirection = this.roverPosition.direction;
switch (currentDirection)
{
case Direction.N:
newPosition.y += 1;
break;
case Direction.E:
newPosition.x += 1;
break;
case Direction.S:
newPosition.y -= 1;
break;
case Direction.W:
newPosition.x -= 1;
break;
default:
break;
}
if (CheckRoverIsInPlateauBoundary(newPosition))
{
this.roverPosition = newPosition;
}
else
{
throw new RoverOutOfRangeException();
}
return(this.roverPosition);
}