day16.lib package

Submodules

day16.lib.cells module

Cell classes.

class day16.lib.cells.BackSlashCell(contents: str)[source]

Bases: Cell

A \ cell.

next_lasers(laser: Laser) → list[Laser][source]: Lasers go diagonal mode.

class day16.lib.cells.Cell(contents: str)[source]

Bases: ABC

Abstract cell class.

CELL_TYPES: Dict[str, Type[Cell]] = {'-': <class 'day16.lib.cells.DashCell'>, '.': <class 'day16.lib.cells.DotCell'>, '/': <class 'day16.lib.cells.ForwardSlashCell'>, '\\': <class 'day16.lib.cells.BackSlashCell'>, '|': <class 'day16.lib.cells.PipeCell'>}

static construct(contents: str) → Cell[source]: Construct proper cell from given contents.

contents: str

abstract next_lasers(laser: Laser) → list[Laser][source]: Return next lasers given a laser entering this cell.

static register_cell_type(cell_contents: str) → Callable[[type[Cell]], type[Cell]][source]: Registers a cell type to this factory.

class day16.lib.cells.DashCell(contents: str)[source]

Bases: Cell

A - cell.

next_lasers(laser: Laser) → list[Laser][source]: Lasers must end up going east/west after passing through this cell.

class day16.lib.cells.DotCell(contents: str)[source]

Bases: Cell

A dot cell.

next_lasers(laser: Laser) → list[Laser][source]: Lasers pass directly through this tile.

class day16.lib.cells.ForwardSlashCell(contents: str)[source]

Bases: Cell

A / cell.

next_lasers(laser: Laser) → list[Laser][source]: Lasers go diagonal mode.

class day16.lib.cells.PipeCell(contents: str)[source]

Bases: Cell

A | cell.

next_lasers(laser: Laser) → list[Laser][source]: Lasers must end up going north/south after passing through this cell.

day16.lib.direction module

Direction class.

class day16.lib.direction.Direction(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)[source]

Bases: IntEnum

Simple direction enum.

EAST = 1

NORTH = 0

SOUTH = 2

WEST = 3

offset(row: int, col: int) → tuple[int, int][source]: Offset a row/col by our direction.

opposite() → Direction[source]: Returns opposite direction.

day16.lib.laser module

laser instance class.

class day16.lib.laser.Laser(row: int, col: int, direction: Direction)[source]

Bases: object

Laser position + direction.

col: int

direction: Direction

row: int

day16.lib.parsers module

Parsers for input file.

day16.lib.parsers.get_input(path: str) → World[source]: Read input file and return well formed :class:World.

day16.lib.world module

Well defined world classes.

class day16.lib.world.SolvedWorld(num_rows: int, num_cols: int)[source]

Bases: object

A solved world class, stores how many lasers are in each tile.

add_laser(laser: Laser) → None[source]: Adds laser to cell.

already_solved(laser: Laser) → bool[source]: Returns true if laser already calculated.

data: list[list[list[Laser]]]

num_energized() → int[source]: Return number of energized cells.

class day16.lib.world.World(data: list[list[Cell]])[source]

Bases: object

The input world (mirrors/empty tiles).

data: list[list[Cell]]

is_oob(laser: Laser) → bool[source]: True if laser is out of bounds.

num_cols: int

num_rows: int

solve(start_laser: Laser) → SolvedWorld[source]: Solve our world.

Module contents

library modules for day16.