private static void Part2()
{
int wx = 10, wy = -1, x = 0, y = 0;
foreach (var line in input)
{
char action = line[0];
int value = int.Parse(line.Substring(1));
switch (action)
{
case 'N': wy -= value; break;
case 'S': wy += value; break;
case 'E': wx += value; break;
case 'W': wx -= value; break;
case 'R':
case 'L':
if ((action == 'R' && value == 90) || (action == 'L' && value == 270))
{
GenericExtensions.Swap(ref wx, ref wy);
wx *= -1;
break;
}
if ((action == 'R' && value == 270) || (action == 'L' && value == 90))
{
GenericExtensions.Swap(ref wx, ref wy);
wy *= -1;
break;
}
if (value == 180)
{
wx *= -1;
wy *= -1;
break;
}
break;
case 'F':
// move to the waypoint the given number of times
x += (wx * value);
y += (wy * value);
break;
default: break;
}
}
Console.WriteLine($"\nPart 2: End at ({x},{y})");
Console.WriteLine($"Manhattan Distance: {(x, y).ManhattanDistance((0, 0))}");
}
