4etools/diceroller.py

79 lines
2.6 KiB
Python
Raw Permalink Normal View History

#!/usr/bin/python
#
# Command-line dice roller
import sys
sys.path.append('lib/')
from dice import Dice
import random
import argparse
# This takes command-line input as dice description strings
# and builds a list of Dice objects
def parse_input(args):
dice_list = []
for arg in args:
dice_list.append(Dice.from_str(arg))
return dice_list
def parse_args():
parser = argparse.ArgumentParser(description='Roll dice based on descriptions passed in on the command line', formatter_class=argparse.RawTextHelpFormatter)
parser.add_argument('--repeat', '-r', metavar='N', type=int, default=1, help='repeat the given rolls N times')
parser.add_argument('--verbose', '-v', action='store_true', help='print detailed information about each roll')
parser.add_argument('dice', nargs=argparse.REMAINDER, help="""
Dice are input in the following form:
XdY[modifiers]
This will roll X Y-sided dice and apply the specified modifiers.
Modifiers can be any of the following (where N and M are integers):
(+|-)N Add or subtract N from the total
lN Drop the lowest-rolling N dice from the total
hN Drop the highest-rolling N dice from the total
rN[xM] Any dice that roll <= N will be rerolled.
If the optional 'xM' option is specified, dice will be rerolled a maximum of M times.
Otherwise each die will be rerolled until the result is > N
Examples:
1d20+5 roll 1 twenty-sided die, and add 5 to the result
6d6l1h1 roll 6 six-sided dice, and drop both the highest and the lowest roll
4d6l1r2x1 roll 4 six-sided dice. Any dice rolling a 1 or 2 will be rerolled once.
If the result is still 1 or 2 it is kept. The lowest die is dropped from the result
""")
return parser.parse_args()
def main():
settings = parse_args()
dice_list = parse_input(settings.dice)
for i in range(settings.repeat):
for dice in dice_list:
ret = dice.roll()
if settings.verbose:
drop_info = ''
reroll_info = ''
if ret['dropped']:
drop_info = ' [dropped {}]'.format(','.join(['{}'.format(x) for x in ret['dropped']]))
if ret['rerolled']:
reroll_info = ' [rerolled {}]'.format(','.join(['{}'.format(x) for x in ret['rerolled']]))
print('{dice}: {rolls}{drop}{reroll} {total}'.format(dice=dice, rolls=ret['rolls'], total=ret['total'], drop=drop_info, reroll=reroll_info))
else:
print('{dice}: {total}'.format(dice=dice, total=ret['total']))
if __name__ == '__main__':
main()