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dice.py
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dice.py
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import re
from random import randint
from tatsu import parse
import json
class InvalidCommandException(Exception):
pass
HELP_TEXT = '''
Troller is Troller, I respond to commands:
`!troll (dice text)`: Troller rolls dice
`!register (or) !put (command name) / (dice text)`: Troller stores dice command for later
`!command (or) !use (command name)`: Troller runs stored command
`!commands`: Troller blurts all the commands Troller remembers
Troller recognizes dices like this:
`!troll 1d8+5`: Troller rolls dice with modifiers
`!troll adv (1d20+7)`: Troller rolls dice with advantage
`!troll disadv (1d20+3)`: Troller rolls dice with disadvantage
`!troll 1d6+10,1d8+5`: Troller rolls multiple sets of dice
`!register sneak attack montana / 1d4+3d6`: Troller stores "sneak attack montana" for later
`!command sneak attack montana`: Troller runs the command "sneak attack montana"
'''
GRAMMAR = '''
@@grammar::CALC
start = expression $ ;
expression
=
| expression ',' expression
| expression '+' dexpr
| expression '-' dexpr
| dexpr
;
dexpr
=
| 'adv' dexpr
| 'disadv' dexpr
| dexpr '+' term
| dexpr '-' term
| term
;
term
=
| 'adv' expression
| 'disadv' expression
| '(' expression ')'
| dice
| number
;
number = /\d+/ ;
dice = /\d+d\d+/ ;
'''
class StoredCommand:
def __init__(self):
pass
def register(self, mention, command_name, dice_string):
commands = self.get()
commands[command_name] = (mention, dice_string)
self.put(commands)
def put(self, commands):
with open("stored_commands.json", "w") as file:
file.write(json.dumps(commands))
def get(self):
commands = {}
try:
commands = json.loads(open("stored_commands.json").read())
except FileNotFoundError:
with open("stored_commands.json", "w") as file:
file.write(json.dumps({}))
return commands
class DiceGroup:
def __init__(self, dice):
self.dices = [dice]
def __add__(self, d):
self.dices += d.dices
return self
def __sub__(self, d):
for i in range(len(d.dices)):
d.dices[i].results = [-r for r in d.dices[i].results]
d.dices[i].constant = -d.dices[i].constant
self.dices += d.dices
return self
class Dice:
def __init__(self, string, reroll=""):
self.constant = 0
self.reroll = reroll
self.inter = None
if "d" not in string:
self.constant = int(string)
self.count = 0
self.dice = 0
else:
count, dice = map(int, string.split("d"))
self.count = count
self.dice = dice
self.roll()
def roll(self):
self.results = []
if self.reroll == "adv":
roll_one = [randint(1, self.dice) for _ in range(self.count)]
roll_two = [randint(1, self.dice) for _ in range(self.count)]
self.inter = [roll_one, roll_two]
if sum(roll_one) > sum(roll_two):
self.results = roll_one
else:
self.results = roll_two
elif self.reroll == "disadv":
roll_one = [randint(1, self.dice) for _ in range(self.count)]
roll_two = [randint(1, self.dice) for _ in range(self.count)]
self.inter = [roll_one, roll_two]
if sum(roll_one) < sum(roll_two):
self.results = roll_one
else:
self.results = roll_two
else:
self.results = [randint(1, self.dice) for _ in range(self.count)]
@property
def sum(self):
return sum([*self.results, self.constant])
def __add__(self, d):
return DiceGroup(self) + DiceGroup(d)
def __sub__(self, d):
d.results = [-r for r in d.results]
return DiceGroup(self) - DiceGroup(d)
def __str__(self):
return self.__repr__()
def __repr__(self):
def highlight(roll):
if roll == self.dice:
return f"**{roll}**"
elif roll == 1:
return f"**{roll}**"
else:
return str(roll)
if self.constant != 0:
return f"({self.constant})"
result = "(" + ",".join(map(highlight, self.results)) + ")"
if not self.reroll == "":
inter_one = ",".join(map(highlight, self.inter[0]))
inter_two = ",".join(map(highlight, self.inter[1]))
inter_one = f"({inter_one})" if len(self.inter[0]) > 1 else inter_one
inter_two = f"({inter_two})" if len(self.inter[1]) > 1 else inter_two
return f"{self.reroll} {self.count}d{self.dice}({inter_one},{inter_two})->{result}"
return f"{self.count}d{self.dice}{result}"
def compute(expr, reroll=""):
if len(expr) == 3 and expr[1] == ",":
lterm = compute(expr[0], reroll)
rterm = compute(expr[2], reroll)
return [lterm, *rterm] if type(rterm) == list else [lterm, rterm]
elif len(expr) == 3 and expr[1] == "+":
lterm = compute(expr[0], reroll)
rterm = compute(expr[2], reroll)
return lterm + rterm
elif len(expr) == 3 and expr[1] == "-":
lterm = compute(expr[0], reroll)
rterm = compute(expr[2], reroll)
return lterm - rterm
elif expr[0] == "(" and expr[-1] == ")":
return compute(expr[1:-1][0], reroll)
elif expr[0] == "adv":
return compute(expr[1], "adv")
elif expr[0] == "disadv":
return compute(expr[1], "disadv")
else:
return DiceGroup(Dice(expr, reroll))
def handle_dice(command):
try:
expr = parse(GRAMMAR, command)
dice_groups = compute(expr)
roll_response = ""
if type(dice_groups) == DiceGroup:
group = dice_groups
# render result of each dice roll with str(), change if necessary in the future
roll_response += " + ".join(map(str, group.dices))
roll_response += " = "
roll_response += f"__{sum([d.sum for d in group.dices])}__"
roll_response += "\n"
else:
for idx, group in enumerate(dice_groups):
roll_response += f"**Roll {idx+1}**:\n"
roll_response += " + ".join(map(str, group.dices)) + " = " + f"__{sum([d.sum for d in group.dices])}__"
roll_response += "\n"
return roll_response
except Exception as e:
raise InvalidCommandException()