def _neighbors(coordinate: Coordinate) -> Set[Coordinate]:
return {
coordinate.left().up(),
coordinate.up(),
coordinate.down(),
coordinate.right().down(),
coordinate.left(),
coordinate.right()
}
def part2(self):
waypoint = Coordinate(10, 1)
ship = Coordinate(0, 0)
for line in self.lines:
value = int(line[1:])
command = line[0]
if command == "N":
waypoint = waypoint.up(value)
elif command == "S":
waypoint = waypoint.down(value)
elif command == "E":
waypoint = waypoint.right(value)
elif command == "W":
waypoint = waypoint.left(value)
elif command == "L":
waypoint = waypoint.ccw_around(ship, value // 90)
elif command == "R":
waypoint = waypoint.cw_around(ship, value // 90)
elif command == "F":
diff_coordinate = waypoint - ship
ship = ship + (diff_coordinate * value)
waypoint = ship + diff_coordinate
result = ship.manhattan(Coordinate(0, 0))
print("Part 2:", result)
class Y2017D11(object):
def __init__(self, file_name):
line = Input(file_name).line()
self.furthest_distance = 0
self.coordinate = Coordinate(0, 0)
for step in line.split(","):
if step == 'n':
self.coordinate = self.coordinate.up()
elif step == 's':
self.coordinate = self.coordinate.down()
elif step == 'ne':
self.coordinate = self.coordinate.right()
elif step == 'sw':
self.coordinate = self.coordinate.left()
elif step == 'nw':
self.coordinate = self.coordinate.left().up()
elif step == 'se':
self.coordinate = self.coordinate.right().down()
self.furthest_distance = max(self.furthest_distance,
self._distance(self.coordinate))
@staticmethod
def _distance(coordinate: Coordinate) -> int:
if (coordinate.x < 0 < coordinate.y) or (coordinate.x > 0 >
coordinate.y):
return max(abs(coordinate.x), abs(coordinate.y))
return abs(coordinate.x + coordinate.y)
def part1(self):
result = self._distance(self.coordinate)
print("Part 1:", result)
def part2(self):
result = self.furthest_distance
print("Part 2:", result)