Solution to Day 19: A Series of Tubes

advent_of_code_d19_p2.py

#!/bin/python


#aoc_d19.py


inp = open("demo_d19.txt").readlines()
inp = open("input_d19.txt").readlines()
#inp = [c for c in inp]

l = 0
i = 0
print 'Z',ord(inp[l][i])
while inp[l][i] != '|':
	i += 1

print 'S:',l,i

packet = ''
direction_y = 1
direction_x = 0
r = 1
while True:
	r += 1
	if r % 100 == 0:
		print r
	l += direction_y
	i += direction_x
	#print l,i, inp[l][i]
	if inp[l][i] == '|':
		pass
		#direction_y = 1
	elif inp[l][i] == '-':
		pass
	elif inp[l][i] == '+':
		print '+', r
		if direction_y != 0:
			#print 'p 1', inp[l][i+1], inp[l][i-1]
			if inp[l][i+1] != ' ' :
				#print 'i+1'
				direction_x = 1
				direction_y = 0
			if inp[l][i-1] != ' ':
				#print 'i-1'
				direction_x = -1
				direction_y = 0
		elif direction_x != 0:
			#print 'p 2'
			if l < len(inp)-1 and inp[l+1][i] != ' ':
				direction_x = 0
				direction_y = 1
			if l>0 and inp[l-1][i] != ' ':
				direction_x = 0
				direction_y = -1
		#print 'Dir:', direction_y, direction_x
	else:
		if inp[l][i] == ' ':
			break
		packet += inp[l][i]
		print packet,len(packet), r, l, i

	if r > 52055:
		break

print packet