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day22.py
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#!/usr/bin/env python
import numpy as np
def doInstruction(startingPos, monkeyMap, instruction):
nbSteps = int(instruction[:-1])
directionChange = instruction[-1]
Rmapping = {"up":"right", "right":"down", "down":"left", "left":"up"}
Lmapping = {"right":"up", "down":"right", "left":"down", "up":"left"}
if startingPos[1] == "right":
for _ in range(nbSteps):
if startingPos[0][1] == monkeyMap.shape[1]-1:
teleportColumn = np.amin(np.argwhere(monkeyMap[startingPos[0][0],:] != 3))
if monkeyMap[startingPos[0][0], teleportColumn] == 1:
startingPos[0][1] = teleportColumn
elif monkeyMap[startingPos[0][0], startingPos[0][1]+1] == 1:
startingPos[0][1] += 1
elif monkeyMap[startingPos[0][0], startingPos[0][1]+1] == 2:
pass
elif monkeyMap[startingPos[0][0], startingPos[0][1]+1] == 3:
teleportColumn = np.amin(np.argwhere(monkeyMap[startingPos[0][0],:] != 3))
if monkeyMap[startingPos[0][0], teleportColumn] == 1:
startingPos[0][1] = teleportColumn
elif startingPos[1] == "left":
for _ in range(nbSteps):
if startingPos[0][1] == 0:
teleportColumn = np.amax(np.argwhere(monkeyMap[startingPos[0][0],:] != 3))
if monkeyMap[startingPos[0][0], teleportColumn] == 1:
startingPos[0][1] = teleportColumn
elif monkeyMap[startingPos[0][0], startingPos[0][1]-1] == 1:
startingPos[0][1] -= 1
elif monkeyMap[startingPos[0][0], startingPos[0][1]-1] == 2:
pass
elif monkeyMap[startingPos[0][0], startingPos[0][1]-1] == 3:
teleportColumn = np.amax(np.argwhere(monkeyMap[startingPos[0][0],:] != 3))
if monkeyMap[startingPos[0][0], teleportColumn] == 1:
startingPos[0][1] = teleportColumn
elif startingPos[1] == "down":
for _ in range(nbSteps):
if startingPos[0][0] == monkeyMap.shape[0]-1:
teleportRow = np.amin(np.argwhere(monkeyMap[:,startingPos[0][1]] != 3))
if monkeyMap[teleportRow, startingPos[0][1]] == 1:
startingPos[0][0] = teleportRow
elif monkeyMap[startingPos[0][0]+1, startingPos[0][1]] == 1:
startingPos[0][0] += 1
elif monkeyMap[startingPos[0][0]+1, startingPos[0][1]] == 2:
pass
elif monkeyMap[startingPos[0][0]+1, startingPos[0][1]] == 3:
teleportRow = np.amin(np.argwhere(monkeyMap[:,startingPos[0][1]] != 3))
if monkeyMap[teleportRow, startingPos[0][1]] == 1:
startingPos[0][0] = teleportRow
elif startingPos[1] == "up":
for _ in range(nbSteps):
if startingPos[0][0] == 0:
teleportRow = np.amax(np.argwhere(monkeyMap[:,startingPos[0][1]] != 3))
if monkeyMap[teleportRow, startingPos[0][1]] == 1:
startingPos[0][0] = teleportRow
elif monkeyMap[startingPos[0][0]-1, startingPos[0][1]] == 1:
startingPos[0][0] -= 1
elif monkeyMap[startingPos[0][0]-1, startingPos[0][1]] == 2:
pass
elif monkeyMap[startingPos[0][0]-1, startingPos[0][1]] == 3:
teleportRow = np.amax(np.argwhere(monkeyMap[:,startingPos[0][1]] != 3))
if monkeyMap[teleportRow, startingPos[0][1]] == 1:
startingPos[0][0] = teleportRow
if directionChange == 'R':
startingPos[1] = Rmapping[startingPos[1]]
elif directionChange == 'L':
startingPos[1] = Lmapping[startingPos[1]]
return startingPos
f = open("ressources/day22.txt", "r")
lines = f.readlines()
monkeyMap = []
instructions = ""
mapWidth = 0
nextInstructions = False
for line in lines:
if len(line.strip()) == 0:
nextInstructions = True
elif nextInstructions:
instructions = line.replace("\n", "")
else:
mapLine = line.replace("\n", "").replace(" ", "3")
monkeyMap.append(list(mapLine.replace("#", "2").replace(".", "1")))
mapWidth = max(len(line), mapWidth)
for mapLine in monkeyMap:
if len(mapLine) < mapWidth:
while len(mapLine) < mapWidth:
mapLine.append("3")
instructions = instructions.replace("R","R ").replace("L","L ")
instructions = instructions.split(' ')
instructions[-1] = instructions[-1]+"S"
monkeyMap = [map(int, monkeyLine) for monkeyLine in monkeyMap]
monkeyMap = np.array(monkeyMap)
yStart = np.amin(np.argwhere(monkeyMap[0,:] == 1))
startingPos = [[0,yStart], "right"]
for instruction in instructions:
startingPos = doInstruction(startingPos, monkeyMap, instruction)
row = int(startingPos[0][0])+1
column = int(startingPos[0][1])+1
if startingPos[1] == "right":
direction = 0
if startingPos[1] == "down":
direction = 1
if startingPos[1] == "left":
direction = 2
if startingPos[1] == "up":
direction = 3
print("Password is: {}".format(row*1000+4*column+direction))
faces = {}
mappings = {}
# +------+------+
# | g | e |
# |f 1 | 2 d|
# | | b |
# +------+------+
# | |
# |a 3 b|
# | |
# +------+------+
# | a | |
# |f 4 | 5 d|
# | | c |
# +------+------+
# | |
# |g 6 c|
# | e |
# +------+
width = 50
face1 = monkeyMap[0:width, width:2*width]
facemapping1 = {"up": ["6", "left"], "down":["3", "up"], "left":["4", "left"], "right":["2", "left"]}
face2 = monkeyMap[0:width, 2*width:3*width]
facemapping2 = {"up": ["6", "down"], "down":["3", "right"], "left":["1", "right"], "right":["5", "right"]}
face3 = monkeyMap[width:2*width, width:2*width]
facemapping3 = {"up": ["1", "down"], "down":["5", "up"], "left":["4", "up"], "right":["2", "down"]}
face4 = monkeyMap[2*width:3*width, 0:width]
facemapping4 = {"up": ["3", "left"], "down":["6", "up"], "left":["1", "left"], "right":["5", "left"]}
face5 = monkeyMap[2*width:3*width, width:2*width]
facemapping5 = {"up": ["3", "down"], "down":["6", "right"], "left":["4", "right"], "right":["2", "right"]}
face6 = monkeyMap[3*width:4*width, 0:width]
facemapping6 = {"up": ["4", "down"], "down":["2", "up"], "left":["1", "up"], "right":["5", "down"]}
faces = {"1":face1, "2":face2, "3":face3, "4":face4, "5":face5, "6":face6}
mappings = {"1":facemapping1, "2":facemapping2, "3":facemapping3, "4":facemapping4, "5":facemapping5, "6":facemapping6}
def nextPosition(startingPos, startFace, mappings):
endFace = startFace
direction = startingPos[1]
if direction == "right":
if startingPos[0][1] < width-1:
goTo, endFace = [startingPos[0][0], startingPos[0][1]+1], startFace
else:
endFace, side = mappings[startFace][direction]
x,y = startingPos[0][0], startingPos[0][1]
w = width-1
if side == "left":
direction = "right"
goTo = [x, w-y]
elif side == "up":
goTo = [w-y, w-x]
direction = "down"
elif side == "down":
direction = "up"
goTo = [y, x]
elif side == "right":
direction = "left"
goTo = [w-x, y]
return goTo, direction, endFace
if direction == "left":
if startingPos[0][1] > 0:
goTo, endFace = [startingPos[0][0], startingPos[0][1]-1], startFace
else:
endFace, side = mappings[startFace][direction]
x,y = startingPos[0][0], startingPos[0][1]
w = width-1
if side == "left":
goTo = [w-x,y]
direction = "right"
elif side == "up":
goTo = [w-y, x]
direction = "down"
elif side == "down":
direction = "up"
goTo = [w-y,w-x]
elif side == "right":
goTo = [x, w-y]
direction = "left"
return goTo, direction, endFace
if direction == "up":
if startingPos[0][0] > 0:
goTo, endFace = [startingPos[0][0]-1, startingPos[0][1]], startFace
else:
endFace, side = mappings[startFace][direction]
x,y = startingPos[0][0], startingPos[0][1]
w = width-1
if side == "up":
goTo = [w-y, w-x]
direction = "down"
elif side == "down":
direction = "up"
goTo = [w-x, y]
elif side == "left":
direction = "right"
goTo = [y, x]
elif side == "right":
goTo = [w-y, w-x]
direction = "left"
return goTo, direction, endFace
if direction == "down":
if startingPos[0][0] < width-1:
goTo, endFace = [startingPos[0][0]+1, startingPos[0][1]], startFace
else:
endFace, side = mappings[startFace][direction]
x,y = startingPos[0][0], startingPos[0][1]
w = width-1
if side == "up":
goTo = [w-x, y]
direction = "down"
elif side == "down":
goTo = [x, w-y]
direction = "up"
elif side == "left":
direction = "right"
goTo = [w-y, w-x]
elif side == "right":
goTo = [y, x]
direction = "left"
return goTo, direction, endFace
def doInstruction(startingPos, startingFace, instruction, faces, mappings):
nbSteps = int(instruction[:-1])
directionChange = instruction[-1]
Rmapping = {"up":"right", "right":"down", "down":"left", "left":"up"}
Lmapping = {"right":"up", "down":"right", "left":"down", "up":"left"}
for _ in range(nbSteps):
goTo, direction, endFace = nextPosition(startingPos, startingFace, mappings)
if faces[endFace][goTo[0], goTo[1]] == 1:
startingPos, startingFace = [goTo, direction], endFace
else:
continue
if directionChange == 'R':
startingPos[1] = Rmapping[startingPos[1]]
elif directionChange == 'L':
startingPos[1] = Lmapping[startingPos[1]]
return startingPos, startingFace
startingFace = "1"
yStart = np.amin(np.argwhere(face1[0,:] == 1))
startingPos = [[0,yStart], "right"]
for instruction in instructions:
startingPos, startingFace = doInstruction(startingPos, startingFace, instruction, faces, mappings)
if startingFace == '"1':
startingPos[0][1] += width
elif startingFace == '2':
startingPos[0][1] += width*2
elif startingFace == '3':
startingPos[0][0] += width
startingPos[0][1] += width
elif startingFace == '4':
startingPos[0][0] += 2*width
elif startingFace == '5':
startingPos[0][0] += 2*width
startingPos[0][1] += width
elif startingFace == '6':
startingPos[0][0] += 3*width
row = int(startingPos[0][0])+1
column = int(startingPos[0][1])+1
if startingPos[1] == "right":
direction = 0
elif startingPos[1] == "down":
direction = 1
elif startingPos[1] == "left":
direction = 2
elif startingPos[1] == "up":
direction = 3
print("Cubic Password is: {}".format(row*1000+4*column+direction))