Implement conditions

src/ttfrog/db/bootstrap/bootstrap.json

@@ -44,7 +44,7 @@
       "starting_skills": 0
     }
   ],
-  "class_attribute": [],
+  "class_feature": [],
   "modifier": [
     {
       "id": 1,
@@ -126,8 +126,8 @@
       "slug": "PjPdM"
     }
   ],
-  "class_attribute_map": [],
-  "class_attribute_option": [],
+  "class_feature_map": [],
+  "class_feature_option": [],
   "class_skill_map": [],
   "modifier_map": [
     {
@@ -157,7 +157,7 @@
       "level": 1
     }
   ],
-  "character_class_attribute_map": [],
+  "character_class_feature_map": [],
   "character_skill_map": [],
   "class_map": [
     {

src/ttfrog/db/schema/character.py

@@ -5,9 +5,9 @@ from sqlalchemy.ext.associationproxy import association_proxy
 from sqlalchemy.orm import Mapped, mapped_column, relationship
 
 from ttfrog.db.base import BaseObject, SlugMixin
-from ttfrog.db.schema.classes import CharacterClass, ClassAttribute
-from ttfrog.db.schema.constants import Conditions, DamageType, Defenses
-from ttfrog.db.schema.modifiers import Modifier, ModifierMixin, Stat
+from ttfrog.db.schema.classes import CharacterClass, ClassFeature
+from ttfrog.db.schema.constants import DamageType, Defenses
+from ttfrog.db.schema.modifiers import Condition, Modifier, ModifierMixin, Stat
 from ttfrog.db.schema.skill import Skill
 
 __all__ = [
@@ -15,7 +15,7 @@ __all__ = [
     "AncestryTrait",
     "AncestryTraitMap",
     "CharacterClassMap",
-    "CharacterClassAttributeMap",
+    "CharacterClassFeatureMap",
     "Character",
     "Modifier",
 ]
@@ -32,11 +32,16 @@ def skill_creator(fields):
         return fields
     return CharacterSkillMap(**fields)
 
+def condition_creator(fields):
+    if isinstance(fields, CharacterConditionMap):
+        return fields
+    return CharacterConditionMap(**fields)
+
 
 def attr_map_creator(fields):
-    if isinstance(fields, CharacterClassAttributeMap):
+    if isinstance(fields, CharacterClassFeatureMap):
         return fields
-    return CharacterClassAttributeMap(**fields)
+    return CharacterClassFeatureMap(**fields)
 
 
 class HitDie(BaseObject):
@@ -80,9 +85,9 @@ class Ancestry(BaseObject, ModifierMixin):
     size: Mapped[str] = mapped_column(nullable=False, default="medium")
     speed: Mapped[int] = mapped_column(nullable=False, default=30, info={"min": 0, "max": 99})
 
-    _fly_speed: Mapped[int] = mapped_column(init=False, nullable=True, info={"min": 0, "max": 99})
-    _climb_speed: Mapped[int] = mapped_column(init=False, nullable=True, info={"min": 0, "max": 99})
-    _swim_speed: Mapped[int] = mapped_column(init=False, nullable=True, info={"min": 0, "max": 99})
+    fly_speed: Mapped[int] = mapped_column(init=False, nullable=True, info={"min": 0, "max": 99})
+    climb_speed: Mapped[int] = mapped_column(init=False, nullable=True, info={"min": 0, "max": 99})
+    swim_speed: Mapped[int] = mapped_column(init=False, nullable=True, info={"min": 0, "max": 99})
 
     _traits = relationship(
         "AncestryTraitMap", init=False, uselist=True, cascade="all,delete,delete-orphan", lazy="immediate"
@@ -92,16 +97,8 @@ class Ancestry(BaseObject, ModifierMixin):
     def traits(self):
         return [mapping.trait for mapping in self._traits]
 
-    @property
-    def climb_speed(self):
-        return self._climb_speed or int(self.speed / 2)
-
-    @property
-    def swim_speed(self):
-        return self._swim_speed or int(self.speed / 2)
-
     def add_trait(self, trait, level=1):
-        if not self._traits or trait not in self._traits:
+        if trait not in self.traits:
             mapping = AncestryTraitMap(ancestry_id=self.id, trait=trait, level=level)
             if not self._traits:
                 self._traits = [mapping]
@@ -110,9 +107,6 @@ class Ancestry(BaseObject, ModifierMixin):
             return True
         return False
 
-    def __repr__(self):
-        return self.name
-
 
 class AncestryTrait(BaseObject, ModifierMixin):
     """
@@ -124,9 +118,6 @@ class AncestryTrait(BaseObject, ModifierMixin):
     name: Mapped[str] = mapped_column(String(collation="NOCASE"), nullable=False, unique=True)
     description: Mapped[Text] = mapped_column(Text, default="")
 
-    def __repr__(self):
-        return self.name
-
 
 class CharacterSkillMap(BaseObject):
     __tablename__ = "character_skill_map"
@@ -153,30 +144,34 @@ class CharacterClassMap(BaseObject):
 
     level: Mapped[int] = mapped_column(nullable=False, info={"min": 1, "max": 20}, default=1)
 
-    def __repr__(self):
-        return f"{self.character.name}, {self.character_class.name}, level {self.level}"
 
-
-class CharacterClassAttributeMap(BaseObject):
-    __tablename__ = "character_class_attribute_map"
-    __table_args__ = (UniqueConstraint("character_id", "class_attribute_id"),)
+class CharacterClassFeatureMap(BaseObject):
+    __tablename__ = "character_class_feature_map"
+    __table_args__ = (UniqueConstraint("character_id", "class_feature_id"),)
     id: Mapped[int] = mapped_column(init=False, primary_key=True, autoincrement=True)
     character_id: Mapped[int] = mapped_column(ForeignKey("character.id"), nullable=False)
-    class_attribute_id: Mapped[int] = mapped_column(ForeignKey("class_attribute.id"), nullable=False)
-    option_id: Mapped[int] = mapped_column(ForeignKey("class_attribute_option.id"), nullable=False)
+    class_feature_id: Mapped[int] = mapped_column(ForeignKey("class_feature.id"), nullable=False)
+    option_id: Mapped[int] = mapped_column(ForeignKey("class_feature_option.id"), nullable=False)
 
-    class_attribute: Mapped["ClassAttribute"] = relationship(lazy="immediate")
-    option = relationship("ClassAttributeOption", lazy="immediate")
+    class_feature: Mapped["ClassFeature"] = relationship(lazy="immediate")
+    option = relationship("ClassFeatureOption", lazy="immediate")
 
     character_class = relationship(
         "CharacterClass",
         secondary="class_map",
-        primaryjoin="CharacterClassAttributeMap.character_id == CharacterClassMap.character_id",
+        primaryjoin="CharacterClassFeatureMap.character_id == CharacterClassMap.character_id",
         secondaryjoin="CharacterClass.id == CharacterClassMap.character_class_id",
         viewonly=True,
         uselist=False,
     )
 
+class CharacterConditionMap(BaseObject):
+    __tablename__ = "character_condition_map"
+    __table_args__ = (UniqueConstraint("condition_id", "character_id"), )
+    id: Mapped[int] = mapped_column(init=False, primary_key=True, autoincrement=True)
+    condition_id: Mapped[int] = mapped_column(ForeignKey("condition.id"))
+    character_id: Mapped[int] = mapped_column(ForeignKey("character.id"), nullable=True, default=None)
+    condition = relationship("Condition", lazy="immediate")
 
 class Character(BaseObject, SlugMixin, ModifierMixin):
     __tablename__ = "character"
@@ -212,7 +207,11 @@ class Character(BaseObject, SlugMixin, ModifierMixin):
         nullable=False, default=10, info={"min": 0, "max": 30, "modifiable_class": Stat}
     )
 
-    _vision: Mapped[int] = mapped_column(default=None, nullable=True, info={"min": 0, "modifiable": True})
+    _actions_per_turn: Mapped[int] = mapped_column(nullable=False, default=1, info={"min": 0, "max": 99, "modifiable": True})
+    _bonus_actions_per_turn: Mapped[int] = mapped_column(nullable=False, default=1, info={"min": 0, "max": 99, "modifiable": True})
+    _reactions_per_turn: Mapped[int] = mapped_column(nullable=False, default=1, info={"min": 0, "max": 99, "modifiable": True})
+
+    vision: Mapped[int] = mapped_column(default=None, nullable=True, info={"min": 0, "modifiable": True})
     exhaustion: Mapped[int] = mapped_column(nullable=False, default=0, info={"min": 0, "max": 5})
 
     class_map = relationship("CharacterClassMap", cascade="all,delete,delete-orphan")
@@ -221,8 +220,11 @@ class Character(BaseObject, SlugMixin, ModifierMixin):
     _skills = relationship("CharacterSkillMap", uselist=True, cascade="all,delete,delete-orphan", lazy="immediate")
     skills = association_proxy("_skills", "skill", creator=skill_creator)
 
-    character_class_attribute_map = relationship("CharacterClassAttributeMap", cascade="all,delete,delete-orphan")
-    attribute_list = association_proxy("character_class_attribute_map", "id", creator=attr_map_creator)
+    _conditions = relationship("CharacterConditionMap", uselist=True, cascade="all,delete,delete-orphan", lazy="immediate")
+    conditions = association_proxy("_conditions", "condition", creator=condition_creator)
+
+    character_class_feature_map = relationship("CharacterClassFeatureMap", cascade="all,delete,delete-orphan")
+    feature_list = association_proxy("character_class_feature_map", "id", creator=attr_map_creator)
 
     ancestry_id: Mapped[int] = mapped_column(ForeignKey("ancestry.id"), nullable=False, default="1")
     ancestry: Mapped["Ancestry"] = relationship(uselist=False, default=None)
@@ -248,24 +250,17 @@ class Character(BaseObject, SlugMixin, ModifierMixin):
     def expertise_bonus(self):
         return 2 * self.proficiency_bonus
 
-    @property
-    def proficiencies(self):
-        unified = {}
-        unified.update(**self._proficiencies)
-
     @property
     def modifiers(self):
         unified = {}
         unified.update(**self.ancestry.modifiers)
         for trait in self.traits:
             unified.update(**trait.modifiers)
+        for condition in self.conditions:
+            unified.update(**condition.modifiers)
         unified.update(**super().modifiers)
         return unified
 
-    @property
-    def check_modifiers(self):
-        return [self.check_modifier(skill) for skill in self.skills]
-
     @property
     def classes(self):
         return dict([(mapping.character_class.name, mapping.character_class) for mapping in self.class_map])
@@ -280,19 +275,22 @@ class Character(BaseObject, SlugMixin, ModifierMixin):
 
     @property
     def speed(self):
-        return self._apply_modifiers("speed", self.ancestry.speed)
+        return self._apply_modifiers("speed", self._apply_modifiers("walking_speed", self.ancestry.speed))
 
     @property
     def climb_speed(self):
-        return self._apply_modifiers("climb_speed", self.ancestry._climb_speed)
+        return self._apply_modifiers("climb_speed", self.ancestry.climb_speed or int(self.speed / 2))
 
     @property
     def swim_speed(self):
-        return self._apply_modifiers("swim_speed", self.ancestry._swim_speed)
+        return self._apply_modifiers("swim_speed", self.ancestry.swim_speed or int(self.speed / 2))
 
     @property
     def fly_speed(self):
-        return self._apply_modifiers("fly_speed", self.ancestry._fly_speed)
+        modified = self._apply_modifiers("fly_speed", self.ancestry.fly_speed or 0)
+        if self.ancestry.fly_speed is None and not modified:
+            return None
+        return self._apply_modifiers("speed", modified)
 
     @property
     def size(self):
@@ -311,8 +309,8 @@ class Character(BaseObject, SlugMixin, ModifierMixin):
         return dict([(mapping.character_class.name, mapping.level) for mapping in self.class_map])
 
     @property
-    def class_attributes(self):
-        return dict([(mapping.class_attribute.name, mapping.option) for mapping in self.character_class_attribute_map])
+    def class_features(self):
+        return dict([(mapping.class_feature.name, mapping.option) for mapping in self.character_class_feature_map])
 
     def level_in_class(self, charclass):
         mapping = [mapping for mapping in self.class_map if mapping.character_class_id == charclass.id]
@@ -332,12 +330,6 @@ class Character(BaseObject, SlugMixin, ModifierMixin):
     def absorbs(self, damage_type: DamageType):
         return self.defense(damage_type) == Defenses.absorbs
 
-    def conditions(self):
-        return [self._apply_modifiers(f"conditions.{name}") for name in Conditions]
-
-    def condition(self, condition_name: str):
-        return self._apply_modifiers(f"conditions.{condition_name}", False)
-
     def defense(self, damage_type: DamageType):
         return self._apply_modifiers(damage_type, None)
 
@@ -381,10 +373,10 @@ class Character(BaseObject, SlugMixin, ModifierMixin):
         else:
             mapping.level = level
 
-        # add class attributes with default values
+        # add class features with default values
         for lvl in range(1, level + 1):
-            for attr in newclass.attributes_at_level(lvl):
-                self.add_class_attribute(newclass, attr, attr.options[0])
+            for attr in newclass.features_at_level(lvl):
+                self.add_class_feature(newclass, attr, attr.options[0])
 
         # add default class skills
         for skill in newclass.skills[: newclass.starting_skills]:
@@ -397,42 +389,75 @@ class Character(BaseObject, SlugMixin, ModifierMixin):
 
     def remove_class(self, target):
         self.class_map = [m for m in self.class_map if m.character_class != target]
-        for mapping in self.character_class_attribute_map:
+        for mapping in self.character_class_feature_map:
             if mapping.character_class == target:
-                self.remove_class_attribute(mapping.class_attribute)
+                self.remove_class_feature(mapping.class_feature)
             for skill in target.skills:
                 self.remove_skill(skill, proficient=True, expert=False, character_class=target)
         self._hit_dice = [die for die in self._hit_dice if die.character_class != target]
 
-    def remove_class_attribute(self, attribute):
-        self.character_class_attribute_map = [
-            m for m in self.character_class_attribute_map if m.class_attribute.id != attribute.id
+    def remove_class_feature(self, feature):
+        self.character_class_feature_map = [
+            m for m in self.character_class_feature_map if m.class_feature.id != feature.id
         ]
 
-    def has_class_attribute(self, attribute):
-        return attribute in [m.class_attribute for m in self.character_class_attribute_map]
+    def has_class_feature(self, feature):
+        return feature in [m.class_feature for m in self.character_class_feature_map]
 
-    def add_class_attribute(self, character_class, attribute, option):
-        if self.has_class_attribute(attribute):
+    def add_class_feature(self, character_class, feature, option):
+        if self.has_class_feature(feature):
             return False
         mapping = self.level_in_class(character_class)
         if not mapping:
             return False
-        if attribute not in mapping.character_class.attributes_at_level(mapping.level):
+        if feature not in mapping.character_class.features_at_level(mapping.level):
             return False
-        self.attribute_list.append(
-            CharacterClassAttributeMap(
+        self.feature_list.append(
+            CharacterClassFeatureMap(
                 character_id=self.id,
-                class_attribute_id=attribute.id,
+                class_feature_id=feature.id,
                 option_id=option.id,
-                class_attribute=attribute,
+                class_feature=feature,
             )
         )
         return True
 
+    def add_modifier(self, modifier):
+        if not super().add_modifier(modifier):
+            return False
+
+        if modifier.new_value != Defenses.immune:
+            return True
+
+        modified_condition = None
+        for cond in self.conditions:
+            if modifier.target == cond.name:
+                modified_condition = cond
+                break
+        if not modified_condition:
+            return True
+
+        return self.remove_condition(modified_condition)
+
+    def has_condition(self, condition):
+        return condition in self.conditions
+
+    def add_condition(self, condition):
+        if self.immune(condition.name):
+            return False
+        if self.has_condition(condition):
+            return False
+        self._conditions.append(CharacterConditionMap(condition_id=condition.id, character_id=self.id))
+        return True
+
+    def remove_condition(self, condition):
+        if not self.has_condition(condition):
+            return False
+        mappings = [mapping for mapping in self._conditions if mapping.condition_id != condition.id]
+        self._conditions = mappings
+        return True
+
     def add_skill(self, skill, proficient=False, expert=False, character_class=None):
-        # if not self.id:
-        #    raise Exception("Cannot add a skill before the character has been persisted.")
         skillmap = None
         exists = False
         if skill in self.skills:
@@ -500,14 +525,10 @@ class Character(BaseObject, SlugMixin, ModifierMixin):
 
         self.hit_points = max(0, self.hit_points - (total - self.temp_hit_points))
         self.temp_hit_points = 0
-        return
 
     def spend_hit_die(self, die):
         die.spent = True
 
-    def reset_hit_die(self, die):
-        die.spent = False
-
     def __after_insert__(self, session):
         """
         Called by the session after_flush event listener to add default joins in other tables.

src/ttfrog/db/schema/classes.py

@@ -9,9 +9,9 @@ from ttfrog.db.base import BaseObject
 from ttfrog.db.schema.skill import Skill
 
 __all__ = [
-    "ClassAttributeMap",
-    "ClassAttribute",
-    "ClassAttributeOption",
+    "ClassFeatureMap",
+    "ClassFeature",
+    "ClassFeatureOption",
     "CharacterClass",
     "Skill",
     "ClassSkillMap",
@@ -36,24 +36,24 @@ class ClassSkillMap(BaseObject):
     skill = relationship("Skill", lazy="immediate")
 
 
-class ClassAttributeMap(BaseObject):
-    __tablename__ = "class_attribute_map"
-    class_attribute_id: Mapped[int] = mapped_column(ForeignKey("class_attribute.id"), primary_key=True)
+class ClassFeatureMap(BaseObject):
+    __tablename__ = "class_feature_map"
+    class_feature_id: Mapped[int] = mapped_column(ForeignKey("class_feature.id"), primary_key=True)
     character_class_id: Mapped[int] = mapped_column(ForeignKey("character_class.id"), primary_key=True)
     level: Mapped[int] = mapped_column(nullable=False, info={"min": 1, "max": 20}, default=1)
-    attribute = relationship("ClassAttribute", uselist=False, viewonly=True, lazy="immediate")
+    feature = relationship("ClassFeature", uselist=False, viewonly=True, lazy="immediate")
 
 
-class ClassAttribute(BaseObject):
-    __tablename__ = "class_attribute"
+class ClassFeature(BaseObject):
+    __tablename__ = "class_feature"
     id: Mapped[int] = mapped_column(init=False, primary_key=True, autoincrement=True)
     name: Mapped[str] = mapped_column(nullable=False)
-    options = relationship("ClassAttributeOption", cascade="all,delete,delete-orphan", lazy="immediate")
+    options = relationship("ClassFeatureOption", cascade="all,delete,delete-orphan", lazy="immediate")
 
     def add_option(self, **kwargs):
-        option = ClassAttributeOption(attribute_id=self.id, **kwargs)
+        option = ClassFeatureOption(feature_id=self.id, **kwargs)
         if not self.options or option not in self.options:
-            option.attribute_id = self.id
+            option.feature_id = self.id
             if not self.options:
                 self.options = [option]
             else:
@@ -65,11 +65,11 @@ class ClassAttribute(BaseObject):
         return f"{self.id}: {self.name}"
 
 
-class ClassAttributeOption(BaseObject):
-    __tablename__ = "class_attribute_option"
+class ClassFeatureOption(BaseObject):
+    __tablename__ = "class_feature_option"
     id: Mapped[int] = mapped_column(init=False, primary_key=True, autoincrement=True)
     name: Mapped[str] = mapped_column(nullable=False)
-    attribute_id: Mapped[int] = mapped_column(ForeignKey("class_attribute.id"), nullable=True)
+    feature_id: Mapped[int] = mapped_column(ForeignKey("class_feature.id"), nullable=True)
 
 
 class CharacterClass(BaseObject):
@@ -80,7 +80,7 @@ class CharacterClass(BaseObject):
     hit_die_stat_name: Mapped[str] = mapped_column(default="")
     starting_skills: int = mapped_column(nullable=False, default=0)
 
-    attributes = relationship("ClassAttributeMap", cascade="all,delete,delete-orphan", lazy="immediate")
+    features = relationship("ClassFeatureMap", cascade="all,delete,delete-orphan", lazy="immediate")
 
     _skills = relationship("ClassSkillMap", cascade="all,delete,delete-orphan", lazy="immediate")
     skills = association_proxy("_skills", "skill", creator=skill_creator)
@@ -94,28 +94,28 @@ class CharacterClass(BaseObject):
             return True
         return False
 
-    def add_attribute(self, attribute, level=1):
-        if not self.attributes or attribute not in self.attributes:
-            mapping = ClassAttributeMap(character_class_id=self.id, class_attribute_id=attribute.id, level=level)
-            if not self.attributes:
-                self.attributes = [mapping]
+    def add_feature(self, feature, level=1):
+        if not self.features or feature not in self.features:
+            mapping = ClassFeatureMap(character_class_id=self.id, class_feature_id=feature.id, level=level)
+            if not self.features:
+                self.features = [mapping]
             else:
-                self.attributes.append(mapping)
+                self.features.append(mapping)
             return True
         return False
 
     @property
-    def attributes_by_level(self):
+    def features_by_level(self):
         by_level = defaultdict(list)
-        for mapping in self.attributes:
-            by_level[mapping.level].append(mapping.attribute)
+        for mapping in self.features:
+            by_level[mapping.level].append(mapping.feature)
         return by_level
 
-    def attribute(self, name: str):
-        for mapping in self.attributes:
-            if mapping.attribute.name.lower() == name.lower():
-                return mapping.attribute
+    def feature(self, name: str):
+        for mapping in self.features:
+            if mapping.feature.name.lower() == name.lower():
+                return mapping.feature
         return None
 
-    def attributes_at_level(self, level: int):
-        return list(itertools.chain(*[attrs for lvl, attrs in self.attributes_by_level.items() if lvl <= level]))
+    def features_at_level(self, level: int):
+        return list(itertools.chain(*[attrs for lvl, attrs in self.features_by_level.items() if lvl <= level]))

src/ttfrog/db/schema/modifiers.py

@@ -1,9 +1,10 @@
 from collections import defaultdict
 from typing import Any, Union
 
-from sqlalchemy import ForeignKey, UniqueConstraint
+from sqlalchemy import ForeignKey, UniqueConstraint, String
 from sqlalchemy.ext.declarative import declared_attr
 from sqlalchemy.orm import Mapped, mapped_column, relationship
+# from sqlalchemy.ext.associationproxy import association_proxy
 
 from ttfrog.db.base import BaseObject
 
@@ -71,6 +72,7 @@ class Modifier(BaseObject):
     relative_attribute: Mapped[str] = mapped_column(nullable=True, default=None)
     new_value: Mapped[str] = mapped_column(nullable=True, default=None)
     description: Mapped[str] = mapped_column(default="")
+    condition_id: Mapped[int] = mapped_column(ForeignKey("condition.id"), init=False, nullable=True, default=None)
 
 
 class ModifierMixin:
@@ -136,7 +138,9 @@ class ModifierMixin:
         Returns True if the modifier was added; False if was already present.
         """
         if modifier.absolute_value is not None and modifier.relative_value is not None and modifier.multiple_value:
-            raise AttributeError(f"You must provide only one of absolute, relative, and multiple values {modifier}.")
+            raise AttributeError(
+                f"You must provide only one of absolute, relative, and multiple values {modifier}."
+            )  # pragma: no cover
 
         if [mod for mod in self.modifier_map if mod.modifier == modifier]:
             return False
@@ -155,7 +159,7 @@ class ModifierMixin:
 
         Returns True if it was removed and False if it wasn't present.
         """
-        if modifier not in self.modifiers[modifier.target]:
+        if modifier not in self.modifiers.get(modifier.target, []):
             return False
         self.modifier_map = [mapping for mapping in self.modifier_map if mapping.modifier != modifier]
         return True
@@ -175,7 +179,7 @@ class ModifierMixin:
         for key in col.info.keys():
             if key.startswith("modifiable"):
                 return col
-        return None
+        return None  # pragma: no cover
 
     def _get_modifiable_base(self, attr_name: str) -> object:
         """
@@ -217,7 +221,7 @@ class ModifierMixin:
         if modifier.relative_value is not None:
             return base_value + modifier.relative_value
 
-        raise Exception(f"Cannot apply modifier: {modifier = }")
+        raise Exception(f"Cannot apply modifier: {modifier = }")  # pragma: no cover
 
     def _apply_modifiers(self, target: str, initial: Any, modifiable_class: type = None) -> Modifiable:
         """
@@ -258,7 +262,7 @@ class ModifierMixin:
         """
         col = self._modifiable_column(attr_name)
         if col is not None:
-            raise AttributeError(f"You cannot modify .{attr_name}. Did you mean ._{attr_name}?")
+            raise AttributeError(f"You cannot modify .{attr_name}. Did you mean ._{attr_name}?")  # pragma: no cover
         return super().__setattr__(attr_name, value)
 
     def __getattr__(self, attr_name):
@@ -275,3 +279,62 @@ class ModifierMixin:
                 modifiable_class=col.info.get("modifiable_class", None),
             )
         raise AttributeError(f"No such attribute on {self.__class__.__name__} object: {attr_name}.")
+
+
+class Condition(BaseObject):
+    __tablename__ = "condition"
+    id: Mapped[int] = mapped_column(init=False, primary_key=True, autoincrement=True)
+    name: Mapped[str] = mapped_column(String(collation="NOCASE"), nullable=False, unique=True)
+    description: Mapped[str] = mapped_column(default="")
+
+    _modifiers = relationship("Modifier", uselist=True, cascade="all,delete,delete-orphan")
+    _parent_condition_id: Mapped[int] = mapped_column(ForeignKey("condition.id"), nullable=True, default=None)
+    conditions = relationship("Condition", lazy="immediate", uselist=True)
+
+    @property
+    def modifiers(self):
+        """
+        Return all modifiers for the current instance as a dict keyed on target attribute name.
+        """
+        all_modifiers = defaultdict(list)
+        for modifier in self._modifiers:
+            all_modifiers[modifier.target].append(modifier)
+        for condition in self.conditions:
+            print(condition.modifiers)
+            all_modifiers.update(**condition.modifiers)
+        return all_modifiers
+
+    def add_modifier(self, modifier):
+        if modifier in self._modifiers:
+            return False
+        self._modifiers.append(modifier)
+        return True
+
+    def remove_modifier(self, modifier):
+        if modifier not in self._modifiers:
+            return False
+        self._modifiers = [m for m in self._modifiers if m is not modifier]
+        return True
+
+    def add_condition(self, condition):
+        if condition in self.conditions:
+            return False
+        if self._parent_condition_id and self._parent_condition_id == condition.id:
+            return False
+        self.conditions.append(condition)
+        return True
+
+    def remove_condition(self, condition):
+        if condition not in self.conditions:
+            return False
+        self.conditions = [c for c in self.conditions if c != condition]
+        return True
+
+    def __str___(self):
+        return self.name
+
+    def __repr__(self):
+        mods = ''
+        if self._modifiers:
+            mods = "\n" + "\n".join([f"  - {mod}" for mod in self._modifiers])
+        return f"{self.name}{mods}"

test/conftest.py

@@ -73,7 +73,7 @@ def bootstrap(db):
         db.add_or_update([acrobatics, athletics])
 
         # classes
-        fighting_style = schema.ClassAttribute("Fighting Style")
+        fighting_style = schema.ClassFeature("Fighting Style")
         fighting_style.add_option(name="Archery")
         fighting_style.add_option(name="Defense")
         db.add_or_update(fighting_style)
@@ -86,7 +86,7 @@ def bootstrap(db):
         # add skills
         fighter.add_skill(acrobatics)
         fighter.add_skill(athletics)
-        fighter.add_attribute(fighting_style, level=2)
+        fighter.add_feature(fighting_style, level=2)
         db.add_or_update(fighter)
         assert acrobatics in fighter.skills
         assert athletics in fighter.skills

test/test_bootstrap.py

@@ -21,3 +21,8 @@ def test_dump_load(db, bootstrap):
 def test_loader(db, bootstrap):
     loader.load(db.dump())
     assert len(db.Ancestry.all()) > 0
+
+
+def test_default(db):
+    loader.load()
+    assert len(db.Ancestry.all()) > 0

test/test_schema.py

@@ -1,7 +1,8 @@
 import json
 
 from ttfrog.db import schema
-from ttfrog.db.schema.constants import DamageType, Defenses
+from ttfrog.db.schema.conditions import conditions
+from ttfrog.db.schema.constants import Conditions, DamageType, Defenses
 
 
 def test_manage_character(db, bootstrap):
@@ -23,7 +24,9 @@ def test_manage_character(db, bootstrap):
         assert char.intelligence == 10
         assert char.wisdom == 10
         assert char.charisma == 10
+
         assert darkvision not in char.traits
+        assert char.vision_in_darkness == 0
 
         # verify basic skills were added at creation time
         for skill in db.Skill.filter(
@@ -39,6 +42,7 @@ def test_manage_character(db, bootstrap):
         assert char.ancestry_id == tiefling.id
         assert char.ancestry.name == "tiefling"
         assert darkvision in char.traits
+        assert char.vision_in_darkness == 120
 
         # tiefling ancestry adds INT and CHA modifiers
         assert char.intelligence == 11
@@ -68,14 +72,14 @@ def test_manage_character(db, bootstrap):
         db.add_or_update(char)
         assert char.levels == {"fighter": 1}
         assert char.level == 1
-        assert char.class_attributes == {}
+        assert char.class_features == {}
 
         # 'fighting style' is available, but not at this level
-        fighting_style = fighter.attribute("Fighting Style")
-        assert char.has_class_attribute(fighting_style) is False
-        assert char.add_class_attribute(fighter, fighting_style, fighting_style.options[0]) is False
+        fighting_style = fighter.feature("Fighting Style")
+        assert char.has_class_feature(fighting_style) is False
+        assert char.add_class_feature(fighter, fighting_style, fighting_style.options[0]) is False
         db.add_or_update(char)
-        assert char.class_attributes == {}
+        assert char.class_features == {}
 
         # level up
         char.add_class(fighter, level=7)
@@ -84,10 +88,10 @@ def test_manage_character(db, bootstrap):
         assert char.level == 7
 
         # Assert the fighting style is added automatically and idempotent...ly?
-        assert char.has_class_attribute(fighting_style)
-        assert char.class_attributes[fighting_style.name] == fighting_style.options[0]
-        assert char.add_class_attribute(fighter, fighting_style, fighting_style.options[0]) is False
-        assert char.has_class_attribute(fighting_style)
+        assert char.has_class_feature(fighting_style)
+        assert char.class_features[fighting_style.name] == fighting_style.options[0]
+        assert char.add_class_feature(fighter, fighting_style, fighting_style.options[0]) is False
+        assert char.has_class_feature(fighting_style)
         db.add_or_update(char)
 
         athletics = db.Skill.filter_by(name="athletics").one()
@@ -110,8 +114,13 @@ def test_manage_character(db, bootstrap):
         db.add_or_update(char)
         assert char.level == 8
         assert char.levels == {"fighter": 7, "rogue": 1}
+        assert list(char.classes.keys()) == ["fighter", "rogue"]
         assert sum([len(dice) for dice in char.hit_dice.values()]) == char.level == 8
 
+        # use a hit die
+        char.spend_hit_die(char.hit_dice["rogue"][0])
+        assert len([die for die in char.hit_dice_available if die.character_class.name == "rogue"]) == 0
+
         # remove a class
         char.remove_class(rogue)
         db.add_or_update(char)
@@ -128,17 +137,18 @@ def test_manage_character(db, bootstrap):
         char.add_class(fighter, level=0)
         db.add_or_update(char)
         assert char.levels == {}
-        assert char.class_attributes == {}
+        assert char.class_features == {}
 
-        # verify the proficiencies added by the classes have been removed
+        # verify the proficiencies etc. added by the classes have been removed
         assert athletics not in char.skills
         assert acrobatics not in char.skills
         assert char.check_modifier(athletics) == 0
         assert char.check_modifier(acrobatics) == 0
+        assert char.hit_dice == {}
 
         # ensure we're not persisting any orphan records in the map tables
         dump = json.loads(db.dump())
-        assert not [m for m in dump["character_class_attribute_map"] if m["character_id"] == char.id]
+        assert not [m for m in dump["character_class_feature_map"] if m["character_id"] == char.id]
         assert not [m for m in dump["class_map"] if m["character_id"] == char.id]
 
 
@@ -162,6 +172,10 @@ def test_ancestries(db, bootstrap):
         db.add_or_update(porc)
         assert endurance in porc.traits
 
+        # add it again and assert nothing changes
+        porc.add_trait(endurance, level=1)
+        assert endurance in porc.traits
+
         # add a +3 STR modifier
         str_bonus = schema.Modifier(
             name="STR+3 (Pygmy Orc)",
@@ -208,10 +222,39 @@ def test_modifiers(db, bootstrap):
         slowed = schema.Modifier(target="speed", multiply_value=0.5, name="Slowed")
         restrained = schema.Modifier(target="speed", absolute_value=0, name="Restrained")
         reduced = schema.Modifier(target="size", new_value="Tiny", name="Reduced")
+        fly = schema.Modifier(target="fly_speed", absolute_value=30, name="Fly Spell")
+
+        # test sets of modifiers from conditions are applied when a condition is active
+        incapacitated = schema.Condition(name="incapacitated")
+        incapacitated.add_modifier(schema.Modifier(target="actions_per_turn", absolute_value=0, name="Incapacitated"))
+        incapacitated.add_modifier(schema.Modifier(target="bonus_actions_per_turn", absolute_value=0, name="Incapacitated"))
+        incapacitated.add_modifier(schema.Modifier(target="reactions_per_turn", absolute_value=0, name="Incapacitated"))
+        db.add_or_update(incapacitated)
+        assert carl.actions_per_turn == 1
+        assert carl.bonus_actions_per_turn == 1
+        assert carl.reactions_per_turn == 1
+        assert carl.add_condition(incapacitated)
+        db.add_or_update(carl)
+        assert carl.has_condition(incapacitated)
+        assert carl.actions_per_turn == 0
+        assert carl.bonus_actions_per_turn == 0
+        assert carl.reactions_per_turn == 0
+        assert carl.remove_condition(incapacitated)
+        db.add_or_update(carl)
+        assert carl.actions_per_turn == 1
+        assert carl.bonus_actions_per_turn == 1
+        assert carl.reactions_per_turn == 1
 
         # reduce speed by 10
         assert carl.add_modifier(cold)
         assert carl.speed == 20
+        assert carl.climb_speed == 10
+        assert carl.swim_speed == 10
+        assert carl.fly_speed is None
+
+        # cast fly
+        carl.add_modifier(fly)
+        assert carl.fly_speed == 20
 
         # make sure modifiers only apply to carl. Carl is having a bad day.
         assert marx.speed == 30
@@ -219,6 +262,7 @@ def test_modifiers(db, bootstrap):
         # speed is doubled
         assert carl.remove_modifier(cold)
         assert carl.speed == 30
+        assert carl.fly_speed == 30
         assert carl.add_modifier(hasted)
         assert carl.speed == 60
 
@@ -243,6 +287,9 @@ def test_modifiers(db, bootstrap):
         assert carl.add_modifier(reduced)
         assert carl.size == "Tiny"
 
+        # cannot remove a modifier that isn't applied
+        assert not carl.remove_modifier(cold)
+
         # modifiers can be applied to skills, even if the character doesn't have a skill associated.
         athletics = db.Skill.filter_by(name="athletics").one()
         assert athletics not in carl.skills
@@ -283,6 +330,9 @@ def test_modifiers(db, bootstrap):
         assert len([s for s in carl.skills if s == athletics]) == 1
         assert carl.check_modifier(athletics) == 1
 
+        # ensure you can't remove a skill already removed
+        assert not carl.remove_skill(athletics, proficient=True, expert=False, character_class=None)
+
 
 def test_defenses(db, bootstrap):
     with db.transaction():
@@ -292,6 +342,16 @@ def test_defenses(db, bootstrap):
         carl.apply_damage(5, DamageType.fire)
         assert carl.hit_points == 8  # half damage
 
+        # add temp HP
+        carl.temp_hit_points = 3
+        assert carl.hit_points == 8
+        carl.apply_damage(1, DamageType.bludgeoning)
+        assert carl.hit_points == 8
+        assert carl.temp_hit_points == 2
+        carl.apply_damage(3, DamageType.bludgeoning)
+        assert carl.temp_hit_points == 0
+        assert carl.hit_points == 7
+
         immunity = [
             schema.Modifier("Fire Immunity", target=DamageType.fire, new_value=Defenses.immune),
         ]
@@ -299,7 +359,7 @@ def test_defenses(db, bootstrap):
             carl.add_modifier(i)
         assert carl.immune(DamageType.fire)
         carl.apply_damage(5, DamageType.fire)
-        assert carl.hit_points == 8  # no damage
+        assert carl.hit_points == 7  # no damage
 
         vulnerability = [
             schema.Modifier("Fire Vulnerability", target=DamageType.fire, new_value=Defenses.vulnerable),
@@ -309,7 +369,7 @@ def test_defenses(db, bootstrap):
         assert carl.vulnerable(DamageType.fire)
         assert not carl.immune(DamageType.fire)
         carl.apply_damage(2, DamageType.fire)
-        assert carl.hit_points == 4  # double damage
+        assert carl.hit_points == 3  # double damage
 
         absorbs = [schema.Modifier("Absorbs Non-Magical Fire", target=DamageType.fire, new_value=Defenses.absorbs)]
         carl.add_modifier(absorbs[0])
@@ -324,3 +384,85 @@ def test_defenses(db, bootstrap):
         assert not carl.vulnerable(DamageType.fire)
         assert not carl.absorbs(DamageType.fire)
         assert carl.hit_points == 8  # half damage
+
+
+def test_condition_immunity(db, bootstrap):
+    """
+    Test immunities prevent conditions from being applied
+    """
+    with db.transaction():
+        tiefling = db.Ancestry.filter_by(name="tiefling").one()
+        carl = schema.Character(name="Carl", ancestry=tiefling)
+        poisoned = schema.Condition(name=DamageType.poison)
+        poison_immunity = schema.Modifier("Poison Immunity", target=DamageType.poison, new_value=Defenses.immune)
+        db.add_or_update([carl, poisoned, poison_immunity])
+
+        # poison carl
+        assert carl.add_condition(poisoned)
+        db.add_or_update(carl)
+        assert carl.has_condition(poisoned)
+
+        # grant carl immunity, which must remove the poisoned condition
+        assert carl.add_modifier(poison_immunity)
+        db.add_or_update(carl)
+        assert not carl.has_condition(poisoned)
+
+        # ensure that carl cannot be poisoned while immune to poison
+        assert not carl.add_condition(poisoned)
+
+        # remove the immunity and ensure the previous poison doesn't come back
+        assert carl.remove_modifier(poison_immunity)
+        db.add_or_update(carl)
+        assert not carl.immune(str(poisoned))
+        assert not carl.has_condition(poisoned)
+
+        # carl can be poisoned again
+        assert carl.add_condition(poisoned)
+        db.add_or_update(carl)
+        assert carl.has_condition(poisoned)
+
+def test_partial_immunities(db, bootstrap):
+    """
+    Test that individual modifiers applied by a condition can be negated even if not immune to the condition.
+    """
+    with db.transaction():
+        tiefling = db.Ancestry.filter_by(name="tiefling").one()
+        carl = schema.Character(name="Carl", ancestry=tiefling)
+
+        poisoned = schema.Condition(name=DamageType.poison)
+        poison_immunity = schema.Modifier("Poison Immunity", target=DamageType.poison, new_value=Defenses.immune)
+
+        incapacitated = schema.Condition(name=Conditions.incapacitated)
+        incapacitated.add_modifier(schema.Modifier(target="actions_per_turn", absolute_value=0, name="Incapacitated"))
+        incapacitated.add_modifier(schema.Modifier(target="bonus_actions_per_turn", absolute_value=0, name="Incapacitated"))
+        incapacitated.add_modifier(schema.Modifier(target="reactions_per_turn", absolute_value=0, name="Incapacitated"))
+
+        # petrified incapacitates you, and makes you immune to poison
+        petrified = schema.Condition(name=Conditions.petrified)
+        assert petrified.add_modifier(poison_immunity)
+        assert petrified.add_condition(incapacitated)
+        db.add_or_update([poisoned, poison_immunity, incapacitated, petrified])
+
+        # poison carl
+        carl.add_condition(poisoned)
+        db.add_or_update(carl)
+        assert not carl.immune(DamageType.poison)
+
+        # petrify carl
+        assert not carl.immune(Conditions.petrified)
+        assert carl.add_condition(petrified)
+        db.add_or_update(carl)
+
+        # while petrified, carl is immune to poison
+        assert carl.immune(DamageType.poison)
+
+        # but carl still can't move
+        assert carl.actions_per_turn == 0
+
+        # greater restoration ftw!
+        assert carl.remove_condition(petrified)
+        db.add_or_update(carl)
+
+        # ...but he's still poisoned. Sorry carl :(
+        assert carl.has_condition(poisoned)
+        assert not carl.immune(DamageType.poison)