public Rover(Point grid_ext, Point start_pos, Direction d)
{
_grid_ext = grid_ext;
_cur_pos = start_pos;
if (_cur_pos.Y() > _grid_ext.Y())
{
throw new RoverOutOfBoundsException();
}
if (_cur_pos.Y() < 0)
{
throw new RoverOutOfBoundsException();
}
if (_cur_pos.X() > _grid_ext.X())
{
throw new RoverOutOfBoundsException();
}
if (_cur_pos.X() < 0)
{
throw new RoverOutOfBoundsException();
}
_dir_sm = new DirectionStateMachine(d);
}
public static void Main(string[] args)
{
try
{
String grid = Console.ReadLine();
var grid_points = grid.Split(" ");
if (grid_points.Length > 2)
{
throw new FormatException();
}
if (grid_points.Length < 2)
{
throw new FormatException();
}
int grid_x = int.Parse(grid_points[0]);
int grid_y = int.Parse(grid_points[1]);
if (grid_x < 0 || grid_y < 0)
{
throw new FormatException();
}
Point grid_point = new Point(grid_x, grid_y);
while (true)
{
String rover_pos = Console.ReadLine();
var rover_pos_split = rover_pos.Split(" ");
if (rover_pos_split.Length > 3)
{
throw new FormatException();
}
if (rover_pos_split.Length < 3)
{
throw new FormatException();
}
int rover_x = int.Parse(rover_pos_split[0]);
int rover_y = int.Parse(rover_pos_split[1]);
if (rover_x < 0 || rover_y < 0)
{
throw new FormatException();
}
Point rover_start_point = new Point(rover_x, rover_y);
String rover_heading = rover_pos_split[2];
if (rover_heading.Length > 1)
{
throw new FormatException();
}
Direction?rover_start_direction = DirectionStateMachine.DirectionFromString(rover_heading);
if (!rover_start_direction.HasValue)
{
throw new FormatException();
}
Rover rover = new Rover(grid_point, rover_start_point, rover_start_direction.Value);
String rover_instruct = Console.ReadLine();
foreach (char x in rover_instruct)
{
if (x != 'R' && x != 'L' && x != 'M')
{
throw new FormatException();
}
try
{
switch (x)
{
case 'R':
rover.TurnRight();
break;
case 'L':
rover.TurnLeft();
break;
case 'M':
rover.Move();
break;
}
}
catch (Rover.RoverOutOfBoundsException)
{
Console.Error.WriteLine("Rover instructed to move out of grid bounds, command ignored, rover remains in bounds");
}
}
Console.WriteLine(rover.ToString());
}
}
catch (FormatException)
{
//if FormatException
Console.Error.WriteLine("Poorly Formatted Input");
Console.WriteLine(Usage());
}
catch (OverflowException)
{
//if FormatException
Console.Error.WriteLine("Int Overflow, Keep Inputs below 2,147,483,647");
Console.WriteLine(Usage());
}
catch (Exception)
{
Console.Error.WriteLine("Unknown Failure");
}
}