Solver for mission 14 - https://www.youtube.com/watch?v=rhsH-snYkIc

mission14.py

W = 57
H = 25

MAP = bytearray(" "*W*H)

counter = 0

class Walker(object):
  def __init__(self):
    self.x = 0  # Starting pos.
    self.y = 9

  def walk(self, lines):
    directions = [
      ( "EAST",   1,  0 ),
      ( "NORTH",  0, -1 ),
      ( "WEST",  -1,  0 ),
      ( "SOUTH",  0,  1 )
    ]

    for d in directions:
      if not lines:
        return

      l = lines.pop(0)
      assert(l == ("Trying... " + d[0]))
      nx = self.x + d[1]
      ny = self.y + d[2]

      l = lines.pop(0)
      if   l == "Already visited!":
        continue
      elif l == "There be dragons!":
        continue
      elif l == "A wild wall appears!":
        MAP[ny * W + nx] = chr(255)
        continue
      elif l == "Taking a step.":
        MAP[ny * W + nx] = chr(0)
        self.x += d[1]
        self.y += d[2]
        self.walk(lines)
        l = lines.pop(0)
        assert(l == "Steping back.")
        self.x -= d[1]
        self.y -= d[2]
      else:
        assert False
      #if (nx, ny) in self.visited:
      #  log.append("Already visited!")
      #  continue

      #result = self.is_floor(nx, ny)
      #if result is not True:
      #  log.append(result)
      #  continue

      #log.append("Taking a step.")
      #self.visited.add((self.x, self.y))
      #self.walk(lines)
      #log.append("Steping back.")


lines = open("log.txt", "rb").read().splitlines()

w = Walker()
w.walk(lines)

from PIL import Image
img = Image.frombytes('L', (W, H), str(MAP))
img.save('picture.png')