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import re
import copy
from enum import Enum
from dataclasses import dataclass
from abc import ABC, abstractmethod
from distribution import Distribution
def d(edge_count):
res = Distribution()
if edge_count == 0:
res.insert(0, 1)
return res
prob = 1/edge_count
for val in range(1, edge_count+1):
res.insert(val, prob)
return res
class Roll:
Fumble = -1
Fail = 0
Success = 1
Crit = 2
@staticmethod
def get_natural_success_mod(value):
if value <= 1:
return -1
if value >= 20:
return 1
return 0
@staticmethod
def check(value, dc, bonus=0):
res = 0
rolled = value + bonus
if rolled >= dc + 10:
res = Roll.Crit
elif rolled >= dc:
res = Roll.Success
elif rolled <= dc - 10:
res = Roll.Fumble
res += Roll.get_natural_success_mod(value)
return Roll.clamp(res)
@staticmethod
def clamp(value):
return max(Roll.Fumble, min(Roll.Crit, value))
@staticmethod
def icon(check_res):
if check_res == Roll.Crit:
return "🎯"
if check_res == Roll.Success:
return "✅"
if check_res == Roll.Fail:
return "💢"
if check_res == Roll.Fumble:
return "💀"
return "?"
@staticmethod
def short_str(dist: Distribution):
res = list()
for roll in range(2, -2, -1):
number = int(round(dist.probabilities[roll] * 20))
res.append(Roll.icon(roll) + str(number))
return " ".join(res)
class Difficulty(Enum):
Terrible = -2
Low = -1
Moderate = 0
High = 1
Extreme = 2
@classmethod
def from_str(cls, name):
name = name.strip().lower()
for member in cls:
if member.name.lower() == name:
return member
raise ValueError(f"{name!r} is not a valid {cls.__name__}")
@dataclass
class RollInfo:
die_size: int
dice_count: int = 1
bonus: int = 0
@classmethod
def parse(cls, str_data):
# match strings like '2d6+8 (15)'
match = re.fullmatch(r"^(\d+)d(\d+)\s*(\+\s*\d+)?\s*(\s*\(\s*\d+\s*\))?",
str_data)
if not match:
raise ValueError(f"{str_data!r} is not a valid RollInfo")
res = RollInfo(int(match.group(2).strip()))
res.dice_count = int(match.group(1).strip())
bonus = match.group(3)
if bonus:
res.bonus = int(bonus.strip(" +"))
return res
def distribution(self):
return self.dice_count * d(self.die_size) + self.bonus
class LevelingPlan(ABC):
@abstractmethod
def build(self, level: int):
pass
class Features:
abilities = ["str", "dex", "int", "wis", "cha", "con"]
saves = ["reflex", "will", "fortitude"]
defences = ["unarmored", "light", "medium", "heavy"]
weapons = ["unarmed", "simple", "martial", "advanced"]
skill_ability = {
"perception": "wis",
"fortitude": "con",
"reflex": "dex",
"will": "wis",
"acrobatics": "dex",
"arcana": "int",
"athletics": "str",
"crafting": "int",
"deception": "cha",
"diplomacy": "cha",
"intimidation": "cha",
"medicine": "wis",
"nature": "wis",
"occultism": "int",
"performance": "cha",
"religion": "wis",
"society": "int",
"stealth": "dex",
"survival": "wis",
"thievery": "dex",
}
@staticmethod
def all():
res = set(Features.defences) | set(Features.weapons)
res |= set(Features.saves)
res |= Features.skill_ability.keys()
return list(res)
@staticmethod
def expand(shortcuts: list[str]):
if "all" in shortcuts:
return Features.all()
res = set()
for shortcut in shortcuts:
for skill, ability in Features.skill_ability.items():
if shortcut == ability:
res.add(skill)
for feature in ["saves", "defences", "weapons"]:
if shortcut == feature:
res |= set(getattr(Features, feature))
return list(res)
class Modifier:
names = ["circumstance", "status", "item"]
def __init__(self, circumstance=0, status=0, item=0, untyped=0) -> None:
self.untyped = untyped
self.bonuses = dict()
self.penalties = dict()
for name in Modifier.names:
val = locals()[name]
if val > 0:
self.bonuses[name] = val
elif val < 0:
self.penalties[name] = val
def total(self):
res = self.untyped
for val in self.bonuses.values():
res += val
for val in self.penalties.values():
res += val
return res
def __iadd__(self, other):
if isinstance(other, int):
self.untyped += other
return self
if not isinstance(other, Modifier):
raise NotImplementedError
self.untyped += other.untyped
for name in (self.bonuses.keys() & other.bonuses.keys()):
self.bonuses[name] = max(self.bonuses.get(name, 0),
other.bonuses.get(name, 0))
for name in (self.penalties.keys() & other.penalties.keys()):
self.penalties[name] = min(self.penalties.get(name, 0),
other.penalties.get(name, 0))
return self
def __add__(self, other):
res = copy.deepcopy(self)
res += other
return res
__radd__ = __add__
@dataclass
class Condition:
name: str
filter: list
modifier: Modifier
class Conditions(list):
def modifier(self, features, exclude = None):
exclude = set(exclude) if exclude is not None else set()
features = set(features)
res = Modifier()
for condition in self:
positive = set(condition.filter) & features
negative = set(condition.filter) & exclude
if positive and not negative:
res += condition.modifier
return res
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