public void Control()
{
ManhattanLocation waypoint = new(10, 1);
ManhattanLocation ship = new();
ship = FerryMover.MoveToWaypoint(waypoint, ship, 10);
Assert.Equal(100, ship.HorizontalPosition);
Assert.Equal(10, ship.VerticalPosition);
waypoint.HorizontalPosition = 10;
waypoint.VerticalPosition = 1;
waypoint = FerryMover.MoveDirectionally(waypoint, 'N', 3);
Assert.Equal(10, waypoint.HorizontalPosition);
Assert.Equal(4, waypoint.VerticalPosition);
ship = FerryMover.MoveToWaypoint(waypoint, ship, 7);
Assert.Equal(170, ship.HorizontalPosition);
Assert.Equal(38, ship.VerticalPosition);
waypoint = FerryMover.RotateWaypoint(waypoint, Directive.ROTATE_RIGHT, 90);
Assert.Equal(4, waypoint.HorizontalPosition);
Assert.Equal(-10, waypoint.VerticalPosition);
ship = FerryMover.MoveToWaypoint(waypoint, ship, 11);
Assert.Equal(214, ship.HorizontalPosition);
Assert.Equal(-72, ship.VerticalPosition);
}
public void NorthTurningRight90DegreesIsEast()
{
int shipDirection = Direction.NORTH;
shipDirection = FerryMover.RotateShip(shipDirection, Rotate.RIGHT, 90);
Assert.Equal(Direction.EAST, shipDirection);
}
public void EastTurningLeft180DegreesIsWest()
{
int shipDirection = Direction.EAST;
shipDirection = FerryMover.RotateShip(shipDirection, Rotate.LEFT, 180);
Assert.Equal(Direction.WEST, shipDirection);
}
public void EastTurningLeft90DegreesIsNorth()
{
int shipDirection = Direction.EAST;
shipDirection = FerryMover.RotateShip(shipDirection, Rotate.LEFT, 90);
Assert.Equal(Direction.NORTH, shipDirection);
}
public void EastTurningRight360DegreesIsEast()
{
int shipDirection = Direction.EAST;
shipDirection = FerryMover.RotateShip(shipDirection, Rotate.RIGHT, 360);
Assert.Equal(Direction.EAST, shipDirection);
}
public void NorthTurningRight360DegreesIsNorth()
{
int shipDirection = Direction.NORTH;
shipDirection = FerryMover.RotateShip(shipDirection, Rotate.RIGHT, 360);
Assert.Equal(Direction.NORTH, shipDirection);
}
public void WaypointRotateLeft90From90()
{
ManhattanLocation waypoint = new(10, 4);
waypoint = FerryMover.RotateWaypoint(waypoint, Directive.ROTATE_LEFT, 90);
Assert.Equal(waypoint.HorizontalPosition, -4);
Assert.Equal(waypoint.VerticalPosition, 10);
}
public void WaypointRotateRight180From90()
{
ManhattanLocation waypoint = new(10, 4);
waypoint = FerryMover.RotateWaypoint(waypoint, Directive.ROTATE_RIGHT, 180);
Assert.Equal(waypoint.HorizontalPosition, -4);
Assert.Equal(waypoint.VerticalPosition, -10);
}
static void Main(string[] args)
{
var instructions = FileHelper.GetFileContents <string>("./data/data.txt");
int currentDirection = Direction.EAST;
ManhattanLocation position = new();
foreach (string instruction in instructions)
{
char directive = instruction[0];
int amount = int.Parse(instruction.Substring(1));
// brute force it with a switch for now
switch (directive)
{
case Directive.MOVE_NORTH:
case Directive.MOVE_SOUTH:
case Directive.MOVE_EAST:
case Directive.MOVE_WEST:
position = FerryMover.MoveDirectionally(position, directive, amount);
break;
case Directive.MOVE_FORWARD:
position = FerryMover.MoveForward(position, currentDirection, amount);
break;
case Directive.ROTATE_RIGHT:
case Directive.ROTATE_LEFT:
currentDirection = FerryMover.RotateShip(currentDirection, directive, amount);
break;
default:
throw new Exception("Undefined directive");
}
}
Console.WriteLine(Math.Abs(position.HorizontalPosition) + Math.Abs(position.VerticalPosition));
}
