61 lines
2.5 KiB
Python
61 lines
2.5 KiB
Python
|
""" https://adventofcode.com/2019/day/10 """
|
||
|
|
|
||
|
|
from math import atan2, sqrt, pi
|
||
|
|
|
||
|
|
def readFile():
|
||
|
|
with open(f"{__file__.rstrip('code.py')}input.txt", "r") as f:
|
||
|
|
return [line[:-1] for line in f.readlines()]
|
||
|
|
|
||
|
|
class Asteroid:
|
||
|
|
def __init__(self, x: int, y: int, ox: int, oy: int):
|
||
|
|
self.x = x
|
||
|
|
self.y = y
|
||
|
|
self.dist = sqrt((x - ox)**2 + (y - oy)**2)
|
||
|
|
self.angle = atan2(y - oy, x - ox)
|
||
|
|
|
||
|
|
def __str__(self):
|
||
|
|
return str((self.x, self.y))
|
||
|
|
|
||
|
|
def getAsteroids(field: list, x: int, y: int):
|
||
|
|
return [Asteroid(i,j,x,y) for j in range(len(field))
|
||
|
|
for i in range(len(field[j])) if field[j][i] != "." and (i,j) != (x,y)]
|
||
|
|
|
||
|
|
def getVisibleAsteroids(field: list, x: int, y: int):
|
||
|
|
asteroids = getAsteroids(field, x, y)
|
||
|
|
angles = set([asteroid.angle for asteroid in asteroids])
|
||
|
|
return len(angles)
|
||
|
|
|
||
|
|
def part1(vals: list):
|
||
|
|
mx, my, max = 0, 0, 0
|
||
|
|
for y in range(len(vals)):
|
||
|
|
for x in range(len(vals[0])):
|
||
|
|
if vals[y][x] == ".":
|
||
|
|
continue
|
||
|
|
tmp = getVisibleAsteroids(vals, x, y)
|
||
|
|
if tmp > max:
|
||
|
|
mx, my, max = x, y, tmp
|
||
|
|
return mx, my, max
|
||
|
|
|
||
|
|
def part2(vals: list, x: int, y: int, count):
|
||
|
|
pass
|
||
|
|
|
||
|
|
def test():
|
||
|
|
assert part1([".#..#",".....","#####","....#","...##"]) == (3, 4, 8)
|
||
|
|
assert part1(["......#.#.","#..#.#....","..#######.",".#.#.###..",".#..#.....","..#....#.#",
|
||
|
|
"#..#....#.",".##.#..###","##...#..#.",".#....####"]) == (5,8,33)
|
||
|
|
assert part1(["#.#...#.#.",".###....#.",".#....#...","##.#.#.#.#","....#.#.#.",".##..###.#",
|
||
|
|
"..#...##..","..##....##","......#...",".####.###."]) == (1,2,35)
|
||
|
|
assert part1([".#..#..###","####.###.#","....###.#.","..###.##.#","##.##.#.#.","....###..#",
|
||
|
|
"..#.#..#.#","#..#.#.###",".##...##.#",".....#.#.."]) == (6,3,41)
|
||
|
|
assert part1([".#..##.###...#######","##.############..##.",".#.######.########.#",".###.#######.####.#.",
|
||
|
|
"#####.##.#.##.###.##","..#####..#.#########","####################","#.####....###.#.#.##",
|
||
|
|
"##.#################","#####.##.###..####..","..######..##.#######","####.##.####...##..#",
|
||
|
|
".#####..#.######.###","##...#.##########...","#.##########.#######",".####.#.###.###.#.##",
|
||
|
|
"....##.##.###..#####",".#.#.###########.###","#.#.#.#####.####.###","###.##.####.##.#..##"]) == (11,13,210)
|
||
|
|
|
||
|
|
if __name__ == "__main__":
|
||
|
|
test()
|
||
|
|
vals = readFile()
|
||
|
|
p1 = part1(vals)
|
||
|
|
print(f"Part 1: {p1[2]}")
|
||
|
|
print(f"Part 2: {part2(vals, p1[0], p1[1], 200)}")
|