add support for modifier overrides with proficiency and expertise
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@ -57,7 +57,7 @@ class Ancestry(BaseObject, ModifierMixin):
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creature_type: Mapped[str] = mapped_column(nullable=False, default="humanoid")
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size: Mapped[str] = mapped_column(nullable=False, default="medium")
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walk_speed: Mapped[int] = mapped_column(nullable=False, default=30, info={"min": 0, "max": 99})
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speed: Mapped[int] = mapped_column(nullable=False, default=30, info={"min": 0, "max": 99})
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_fly_speed: Mapped[int] = mapped_column(init=False, nullable=True, info={"min": 0, "max": 99})
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_climb_speed: Mapped[int] = mapped_column(init=False, nullable=True, info={"min": 0, "max": 99})
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@ -71,10 +71,6 @@ class Ancestry(BaseObject, ModifierMixin):
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def traits(self):
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return [mapping.trait for mapping in self._traits]
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@property
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def speed(self):
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return self.walk_speed
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@property
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def climb_speed(self):
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return self._climb_speed or int(self.speed / 2)
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@ -213,6 +209,10 @@ class Character(BaseObject, SlugMixin, ModifierMixin):
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def proficiency_bonus(self):
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return 1 + int(0.5 + self.level / 4)
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@property
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def expertise_bonus(self):
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return 2 * self.proficiency_bonus
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@property
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def proficiencies(self):
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unified = {}
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@ -282,20 +282,33 @@ class Character(BaseObject, SlugMixin, ModifierMixin):
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return mapping[0]
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def check_modifier(self, skill: Skill, save: bool = False):
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# if the skill is not assigned, but we have modifiers, apply them to zero.
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if skill not in self.skills:
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return self.check_modifier(skill.parent, save=save) if skill.parent else 0
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target = f"{skill.name.lower()}_{'save' if save else 'check'}"
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if self.has_modifier(target):
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modified = self._apply_modifiers(target, 0)
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return modified
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attr = skill.parent.name.lower() if skill.parent else skill.name.lower()
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# if the skill is a stat, start with the bonus value
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attr = skill.name.lower()
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stat = getattr(self, attr, None)
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initial = stat.bonus if stat else 0
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initial = getattr(stat, "bonus", None)
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mapping = [mapping for mapping in self._skills if mapping.skill_id == skill.id][0]
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# if the skill isn't a stat, try the parent.
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if initial is None and skill.parent:
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stat = getattr(self, skill.parent.name.lower(), None)
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initial = getattr(stat, "bonus", initial)
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if mapping.expert and not save:
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initial += 2 * self.proficiency_bonus
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elif mapping.proficient:
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initial += self.proficiency_bonus
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# if the skill is a proficiency, apply the bonus to the initial value
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if skill in self.skills:
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mapping = [mapping for mapping in self._skills if mapping.skill_id == skill.id][-1]
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print(f"Found mapping: {mapping}")
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if mapping.expert and not save:
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initial += 2 * self.proficiency_bonus
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elif mapping.proficient:
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initial += self.proficiency_bonus
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# return the initial value plus any modifiers.
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return self._apply_modifiers(f"{attr}_{'save' if save else 'check'}", initial)
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def add_class(self, newclass, level=1):
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@ -324,7 +337,7 @@ class Character(BaseObject, SlugMixin, ModifierMixin):
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if mapping.character_class.id == target.id:
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self.remove_class_attribute(mapping.class_attribute)
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for skill in target.skills:
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self.remove_skill(skill, character_class=target)
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self.remove_skill(skill, proficient=True, expert=False, character_class=target)
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def remove_class_attribute(self, attribute):
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self.character_class_attribute_map = [
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@ -353,22 +366,54 @@ class Character(BaseObject, SlugMixin, ModifierMixin):
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return True
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def add_skill(self, skill, proficient=False, expert=False, character_class=None):
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if not self.skills or skill not in self.skills:
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if not self.id:
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raise Exception(f"Cannot add a skill before the character has been persisted.")
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mapping = CharacterSkillMap(skill_id=skill.id, character_id=self.id, proficient=proficient, expert=expert)
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if character_class:
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mapping.character_class_id = character_class.id
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self._skills.append(mapping)
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if not self.id:
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raise Exception("Cannot add a skill before the character has been persisted.")
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skillmap = None
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exists = False
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if skill in self.skills:
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for mapping in self._skills:
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if mapping.skill_id != skill.id:
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continue
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if character_class is None and mapping.character_class_id:
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continue
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if (character_class is None and mapping.character_class_id is None) or (
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mapping.character_class_id == character_class.id
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):
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skillmap = mapping
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exists = True
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break
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if not skillmap:
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skillmap = CharacterSkillMap(skill_id=skill.id, character_id=self.id)
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skillmap.proficient = proficient
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skillmap.expert = expert
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if character_class:
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skillmap.character_class_id = character_class.id
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if not exists:
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self._skills.append(skillmap)
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return True
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return False
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def remove_skill(self, skill, character_class=None):
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self._skills = [
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def remove_skill(self, skill, proficient, expert, character_class):
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to_delete = [
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mapping
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for mapping in self._skills
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if mapping.skill_id != skill.id and mapping.character_class_id != character_class.id
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if (
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mapping.skill_id == skill.id
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and mapping.proficient == proficient
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and mapping.expert == expert
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and (
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(mapping.character_class_id is None and character_class is None)
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or (character_class and mapping.character_class_id == character_class.id)
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)
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)
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]
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if not to_delete:
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return False
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self._skills = [m for m in self._skills if m not in to_delete]
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return True
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def __after_insert__(self, session):
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"""
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@ -63,9 +63,12 @@ class Modifier(BaseObject):
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id: Mapped[int] = mapped_column(init=False, primary_key=True, autoincrement=True)
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name: Mapped[str] = mapped_column(nullable=False)
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target: Mapped[str] = mapped_column(nullable=False)
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stacks: Mapped[bool] = mapped_column(nullable=False, default=False)
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absolute_value: Mapped[int] = mapped_column(nullable=True, default=None)
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relative_value: Mapped[int] = mapped_column(nullable=True, default=None)
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multiply_value: Mapped[float] = mapped_column(nullable=True, default=None)
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multiply_attribute: Mapped[str] = mapped_column(nullable=True, default=None)
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relative_value: Mapped[int] = mapped_column(nullable=True, default=None)
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relative_attribute: Mapped[str] = mapped_column(nullable=True, default=None)
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new_value: Mapped[str] = mapped_column(nullable=True, default=None)
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description: Mapped[str] = mapped_column(default="")
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@ -123,6 +126,9 @@ class ModifierMixin:
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all_modifiers[mapping.modifier.target].append(mapping.modifier)
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return all_modifiers
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def has_modifier(self, name: str):
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return True if self.modifiers.get(name, None) else False
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def add_modifier(self, modifier: Modifier) -> bool:
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"""
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Associate a modifier to the current instance if it isn't already.
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@ -191,6 +197,29 @@ class ModifierMixin:
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return get_attr(self, attr_name.split("."))
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def _apply_one_modifier(self, modifier, initial, modified):
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print(f"Trying to apply {modifier}")
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if modifier.new_value is not None:
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return modifier.new_value
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elif modifier.absolute_value is not None:
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return modifier.absolute_value
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base_value = modified if modifier.stacks else initial
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if modifier.multiply_attribute is not None:
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return int(base_value * getattr(self, modifier.multiply_attribute) + 0.5)
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if modifier.multiply_value is not None:
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return int(base_value * modifier.multiply_value + 0.5)
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if modifier.relative_attribute is not None:
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return base_value + getattr(self, modifier.relative_attribute)
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if modifier.relative_value is not None:
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return base_value + modifier.relative_value
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raise Exception(f"Cannot apply modifier: {modifier = }")
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def _apply_modifiers(self, target: str, initial: Any, modifiable_class: type = None) -> Modifiable:
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"""
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Apply all the modifiers for a given target and return the modified value.
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@ -212,27 +241,17 @@ class ModifierMixin:
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if not modifiable_class:
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modifiable_class = globals()["ModifiableInt"] if isinstance(initial, int) else globals()["ModifiableStr"]
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# get the modifiers in order from most to least recent
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modifiers = list(reversed(self.modifiers.get(target, [])))
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modifiers = self.modifiers.get(target, [])
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if isinstance(initial, int):
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absolute = [mod for mod in modifiers if mod.absolute_value is not None]
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if absolute:
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modified = absolute[0].absolute_value
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else:
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multiple = [mod for mod in modifiers if mod.multiply_value is not None]
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if multiple:
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modified = int(initial * multiple[0].multiply_value + 0.5)
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else:
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modified = initial + sum(mod.relative_value for mod in modifiers if mod.relative_value is not None)
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else:
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new = [mod for mod in modifiers if mod.new_value is not None]
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if new:
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modified = new[0].new_value
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else:
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modified = initial
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nonstacking = [m for m in modifiers if not m.stacks]
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if nonstacking:
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return modifiable_class(base=initial, modified=self._apply_one_modifier(nonstacking[-1], initial, initial))
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return modifiable_class(base=initial, modified=modified) if modified is not None else None
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modified = initial
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for modifier in modifiers:
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if modifier.stacks:
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modified = self._apply_one_modifier(modifier, initial, modified)
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return modifiable_class(base=initial, modified=modified)
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def __setattr__(self, attr_name, value):
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"""
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@ -37,8 +37,12 @@ def bootstrap(db):
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human = schema.Ancestry("human")
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tiefling = schema.Ancestry("tiefling")
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tiefling.add_modifier(schema.Modifier("Ability Score Increase", target="intelligence", relative_value=1))
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tiefling.add_modifier(schema.Modifier("Ability Score Increase", target="charisma", relative_value=2))
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tiefling.add_modifier(
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schema.Modifier("Ability Score Increase", target="intelligence", stacks=True, relative_value=1)
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)
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tiefling.add_modifier(
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schema.Modifier("Ability Score Increase", target="charisma", stacks=True, relative_value=2)
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)
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# ancestry traits
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darkvision = schema.AncestryTrait("Darkvision")
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@ -132,7 +132,7 @@ def test_ancestries(db, bootstrap):
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porc = schema.Ancestry(
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name="Pygmy Orc",
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size="Small",
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walk_speed=25,
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speed=25,
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)
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assert porc.name == "Pygmy Orc"
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assert porc.creature_type == "humanoid"
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@ -150,6 +150,7 @@ def test_ancestries(db, bootstrap):
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str_bonus = schema.Modifier(
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name="STR+3 (Pygmy Orc)",
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target="strength",
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stacks=True,
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relative_value=3,
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description="Your Strength score is increased by 3.",
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)
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@ -186,7 +187,7 @@ def test_modifiers(db, bootstrap):
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db.add_or_update([carl, marx])
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assert carl.speed == carl.ancestry.speed == 30
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cold = schema.Modifier(target="speed", relative_value=-10, name="Cold")
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cold = schema.Modifier(target="speed", stacks=True, relative_value=-10, name="Cold")
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hasted = schema.Modifier(target="speed", multiply_value=2.0, name="Hasted")
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slowed = schema.Modifier(target="speed", multiply_value=0.5, name="Slowed")
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restrained = schema.Modifier(target="speed", absolute_value=0, name="Restrained")
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@ -201,11 +202,11 @@ def test_modifiers(db, bootstrap):
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# speed is doubled
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assert carl.remove_modifier(cold)
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assert carl.speed == 30
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assert carl.add_modifier(hasted)
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assert carl.speed == 60
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# speed is halved
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assert carl.remove_modifier(hasted)
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# speed is halved, overriding hasted because it was applied after
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assert carl.add_modifier(slowed)
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assert carl.speed == 15
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@ -219,8 +220,49 @@ def test_modifiers(db, bootstrap):
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# back to normal
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assert carl.remove_modifier(slowed)
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assert carl.remove_modifier(hasted)
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assert carl.speed == carl.ancestry.speed
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# modifiers can modify string values too
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assert carl.add_modifier(reduced)
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assert carl.size == "Tiny"
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# modifiers can be applied to skills, even if the character doesn't have a skill associated.
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athletics = db.Skill.filter_by(name="athletics").one()
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assert athletics not in carl.skills
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assert carl.check_modifier(athletics) == 0
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temp_proficiency = schema.Modifier(
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"Expertise in Athletics",
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target="athletics_check",
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stacks=True,
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relative_attribute="expertise_bonus",
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)
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assert carl.add_modifier(temp_proficiency)
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assert carl.check_modifier(athletics) == carl.expertise_bonus + carl.strength.bonus == 2
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assert carl.remove_modifier(temp_proficiency)
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# fighters get proficiency in athletics by default
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fighter = db.CharacterClass.filter_by(name="fighter").one()
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carl.add_class(fighter)
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db.add_or_update(carl)
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assert carl.check_modifier(athletics) == 1
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# add the skill directly, which will grant proficiency but will not stack with proficiency from the class
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carl.add_skill(athletics, proficient=True)
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db.add_or_update(carl)
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assert len([s for s in carl.skills if s == athletics]) == 2
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assert carl.check_modifier(athletics) == 1
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# manually override proficiency with expertise
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carl.add_skill(athletics, expert=True)
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assert carl.check_modifier(athletics) == 2
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assert len([s for s in carl.skills if s == athletics]) == 2
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# remove expertise
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carl.add_skill(athletics, proficient=True, expert=False)
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assert carl.check_modifier(athletics) == 1
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# remove the extra skill entirely, but the fighter proficiency remains
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carl.remove_skill(athletics, proficient=True, expert=False, character_class=None)
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assert len([s for s in carl.skills if s == athletics]) == 1
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assert carl.check_modifier(athletics) == 1
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