[Monthly Challenge #11 - October, 2016] - Procedural Ghosts and Jack-o-Lanterns!

README.md

https://www.reddit.com/r/proceduralgeneration/comments/55xkud/monthly_challenge_11_october_2016_procedural/

The winner of last month's competition wasn't around to give a suggestion on topic, so this is what I came up with! It's October again! With all this spooky stuff abound I thought we could have some festivities of our own. Jack-o-lanterns and ghosts are just begging to be procedurally generated, but if you want to do bats or skeletons or something that's OK too as long as it's halloween themed!

===

My solution is an ASCII ghost that travels back and forth across your terminal randomishly. Happy Halloween!

ASCII ghost design via http://www.ascii-code.com/ascii-art/mythology/ghosts.php

ghosts.py

import random
import time

'''
Ghost design via http://www.ascii-code.com/ascii-art/mythology/ghosts.php
             ___
           _/ @@\
          ( \  O/__
           \    \__)
           /     \
          /      _\
         `"""""``
'''

GHOST = '''
    ___
  _/ eyes\\
 ( \\  mouth/__
  \\    \__)
  /     \\
 /      _\\
`"""""``
'''

GHOST_FLIPPED = '''
    ___
   /eyes \\_
 __\\mouth  / )
(__/     /
  /      \\
 /_       \\
   ``""""`
'''


TERM_BOUNDARY_MIN = 0
TERM_BOUNDARY_MAX = 80

EYES_OPTIONS = (
    '..',
    'oo',
    '@@',
    '66',
    '^^',
)

MOUTH_OPTIONS = (
    '0',
    '-',
    'O',
    '^',
    '~',
    'm',
)


def print_ghost(flip, spaces, eyes, mouth):
    ghost = flip and GHOST or GHOST_FLIPPED
    for line in ghost.split("\n"):
        if spaces:
            for space in xrange(spaces):
                line = " " + line
        print line.replace('eyes', eyes).replace('mouth', mouth)


def main():
    spaces = 0
    add = 5
    boundary = TERM_BOUNDARY_MAX
    eyes = random.choice(EYES_OPTIONS)
    mouth = random.choice(MOUTH_OPTIONS)
    while True:
        spaces += add
        flip = add > 0
        print_ghost(flip, spaces, eyes, mouth)
        if (add > 0 and spaces >= boundary) or (add < 0 and spaces <= boundary):
            if add > 0:
                boundary = random.randint(TERM_BOUNDARY_MIN, spaces)
            else:
                boundary = random.randint(spaces, TERM_BOUNDARY_MAX)
            add *= -1
            eyes = random.choice(EYES_OPTIONS)
            mouth = random.choice(MOUTH_OPTIONS)
        time.sleep(0.2)


if __name__ == '__main__':
    main()