/// <summary>
/// Prompts the user for the starting position of the new rover and the
/// direction in which it is facing.
/// </summary>
/// <param name="bounds">A <c>Point</c> representing the northeastern boundary of the plateau as entered previously by the user.</param>
/// <returns>The user's input as a <c>PointWithHead</c> object.</returns>
public static PointWithHead GetRoverStart(Point bounds)
{
while (true)
{
Console.WriteLine("Enter the rover's starting coordinates and the direction it is facing. [x y N|E|S|W]: ");
String str = Console.ReadLine();
PointWithHead start;
if (!PointWithHead.TryParse(str, out start))
{
Console.WriteLine("Invalid Entry: Please enter two positive integers separated by a space character, followed by another space character and letter representing a cardinal direction (ex. \"0 0 N\")");
continue;
}
else if (start.x > bounds.x || start.y > bounds.y)
{
Console.WriteLine($"Out of Bounds: The rover must begin within the bounds set by the plateau: {bounds}");
continue;
}
return(start);
}
}
/// <summary>
/// Determines whether the assigned rover can be moved in the direction it is facing, or whether it has hit a boundary.
/// </summary>
/// <returns><c>true</c> if the <c>Rover</c> can safely move, <c>false</c> otherwise.</returns>
private bool CanMoveRover()
{
PointWithHead pos = GetRoverPosition();
if (pos.head == Direction.N && pos.y == bounds.y)
{
return(false);
}
else if (pos.head == Direction.E && pos.x == bounds.x)
{
return(false);
}
else if (pos.head == Direction.S && pos.y == 0)
{
return(false);
}
else if (pos.head == Direction.W && pos.x == 0)
{
return(false);
}
return(true);
}
/// <summary>
/// Creates a new <c>Rover</c> instance at the given position
/// </summary>
/// <param name="position">The starting coordinates and facing direction of the <c>Rover</c></param>
public Rover(PointWithHead position)
{
this.position = position;
}
