public int GetPart2ManhattanDistance()
{
var shipCoordinates = new Point(0, 0);
var waypoint = new Point(10, 1);
foreach (IInstruction instruction in Instructions)
{
if (instruction is IDirection)
{
IDirection direction = instruction as IDirection;
Point waypointMovement = direction.Execute();
waypoint.X += waypointMovement.X;
waypoint.Y += waypointMovement.Y;
}
if (instruction is IMovement)
{
IMovement movement = instruction as IMovement;
Point shipMovement = movement.Part2Execute(waypoint);
shipCoordinates.X += shipMovement.X;
shipCoordinates.Y += shipMovement.Y;
}
if (instruction is IRotation)
{
IRotation rotation = instruction as IRotation;
waypoint = rotation.Part2Execute(waypoint);
}
}
return(Math.Abs(shipCoordinates.X) + Math.Abs(shipCoordinates.Y));
}
