def part_2(inputs: tuple[str]) -> int:
assert len(inputs) == 1
santa_navigation = NavigationWithHeading(Position(0, 0), NORTH)
robot_navigation = NavigationWithHeading(Position(0, 0), NORTH)
for i, c in enumerate(inputs[0]):
if i % 2 != 0:
_add_navigation_instruction(robot_navigation, c)
else:
_add_navigation_instruction(santa_navigation, c)
visited = santa_navigation.get_visited_positions(True)
visited.extend(robot_navigation.get_visited_positions(True))
return _count_unique_positions(visited)
def test_navigation_with_heading(self):
navigation = NavigationWithHeading(
Position(0, 0), Headings["N"].value,
lambda pos: pos.x <= 4 and pos.y <= 4)
navigation.drift(Headings["N"].value, 1)
navigation.left(90)
navigation.forward(1)
navigation.right(180)
navigation.forward(10)
self.assertEqual(navigation.position, Position(4, 1))
visited_positions = navigation.get_visited_positions(True)
self.assertEqual(
visited_positions,
[Position(0, 0),
Position(0, 1),
Position(-1, 1),
Position(4, 1)])
visited_positions = navigation.get_visited_positions(False)
self.assertEqual(
visited_positions,
[Position(0, 1), Position(-1, 1),
Position(4, 1)])
def part_1(inputs: tuple[str]) -> int:
assert len(inputs) == 1
navigation = NavigationWithHeading(Position(0, 0), NORTH)
for c in inputs[0]:
_add_navigation_instruction(navigation, c)
return _count_unique_positions(navigation.get_visited_positions(True))