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https://github.com/cupcakearmy/advent-of-code.git
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84 lines
2.2 KiB
Python
84 lines
2.2 KiB
Python
from os.path import join, dirname
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from typing import List, Optional
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from math import cos, sin, radians, atan2, degrees, sqrt
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directions = {
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'N': 0,
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'E': 90,
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'S': 180,
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'W': 270,
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}
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class Ship:
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def __init__(self, waypoint=False) -> None:
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self.x: float = 0
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self.y: float = 0
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self.d: int = directions['E']
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self.waypoint = waypoint
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self.wx: float = 10
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self.wy: float = 1
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@property
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def distance(self) -> int:
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return round(abs(self.x) + abs(self.y))
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def __str__(self) -> str:
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return f'⛴ X={round(self.x)} Y={round(self.y)} 𒎓={round(self.d)}\t🏴☠️ X={round(self.wx)} Y={round(self.wy)}'
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def navigate(self, amount: int, degree: Optional[int] = None) -> None:
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if degree == None:
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if self.waypoint:
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self.x += self.wx * amount
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self.y += self.wy * amount
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return
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degree = self.d
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dx = amount * sin(radians(degree))
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dy = amount * cos(radians(degree))
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if self.waypoint:
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self.wx += dx
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self.wy += dy
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else:
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self.x += dx
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self.y += dy
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def move(self, instruction: str) -> None:
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cmd: str = instruction[0]
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amount: int = int(instruction[1:])
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if cmd in directions:
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self.navigate(amount, degree=directions[cmd])
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elif cmd == 'F':
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self.navigate(amount)
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else:
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diff = amount if cmd == 'R' else -amount
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if self.waypoint:
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size = sqrt(self.wx**2 + self.wy**2)
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d = degrees(atan2(self.wy, self.wx))
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d -= diff
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self.wx = size * cos(radians(d))
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self.wy = size * sin(radians(d))
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else:
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self.d = (self.d + diff) % 360
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def follow(self, file: str) -> None:
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instructions = file.strip().split('\n')
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for instruction in instructions:
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self.move(instruction)
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data = join(dirname(__file__), '../data.txt')
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with open(data) as f:
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txt = f.read()
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ship = Ship()
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ship.follow(txt)
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print(ship)
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print(ship.distance)
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ship = Ship(waypoint=True)
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ship.follow(txt)
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print(ship)
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print(ship.distance)
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