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DnD die roll script
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#!/usr/bin/env python | |
if __name__ == '__main__': | |
import sys, random, re | |
roll_re = r'(?P<rolls>\d+)d(?P<die>\d+)((?P<mod>(\+|-)\d+))?' | |
parsed = re.match(roll_re, sys.argv[1].strip()) if len(sys.argv) == 2 else None | |
if parsed is not None: | |
d = parsed.groupdict() | |
rolls, die, mod = int(d['rolls']), int(d['die']), (int(d['mod']) if d['mod'] is not None else 0) | |
rng = random.SystemRandom() | |
roll = sum(rng.randint(1, die) for _ in range(rolls)) + mod | |
print roll | |
else: | |
print '''roll -- a D'n'D-like dice roller. Handy when you need a random number. | |
USAGE: | |
> roll 1d6 | |
3 | |
> roll 1d4+5 | |
6 | |
How do the D'n'D rolls work? | |
1d4+5 | |
/-------------^ ^ ^-----------\\ | |
| | | | |
number of number of die modifier | |
rolls faces | |
In the example above, we throw a 4-faced die one time, | |
then add 5. | |
Hint: you can use any number of die faces (unlike in real life). | |
Enjoy. | |
''' |
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