66 lines
1.5 KiB
Plaintext
66 lines
1.5 KiB
Plaintext
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#!/usr/bin/python3
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class V:
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def __init__(self, x, y):
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self.x = x
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self.y = y
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def __mul__(self, n):
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return V(self.x * n, self.y * n)
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def __add__(self, other):
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return V(self.x + other.x, self.y + other.y)
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def rotate(self, deg):
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deg = deg % 360
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if deg == 0:
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return self
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elif deg == 90:
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return V(-self.y, self.x)
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elif deg == 180:
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return V(-self.x, -self.y)
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elif deg == 270:
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return V(self.y, -self.x)
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else:
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raise RuntimeError(deg)
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def __abs__(self):
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return abs(self.x) + abs(self.y)
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def __repr__(self):
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return f"V({self.x}, {self.y})"
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def dir2v(dir):
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if dir == 0:
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return (1, 0)
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elif dir == 90:
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return (0, 1)
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elif dir == 180:
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return (-1, 0)
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elif dir == 270:
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return (0, -1)
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else:
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raise RuntimeError(dir)
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pos = V(0, 0)
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v = V(10, 1)
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with open("input") as fh:
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for ln in fh:
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op = ln[0]
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arg = int(ln[1:])
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if op == "F":
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pos += v * arg
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elif op == "L":
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v = v.rotate(arg)
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elif op == "R":
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v = v.rotate(-arg)
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elif op == "E":
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v += V(arg, 0)
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elif op == "W":
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v += V(-arg, 0)
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elif op == "N":
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v += V(0, arg)
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elif op == "S":
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v += V(0, -arg)
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else:
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raise RuntimeError(op)
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print(op, arg, pos, v)
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print(abs(pos))
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