dungeon-sheets/dungeonsheets/features/artificer.py

from dungeonsheets import spells
from dungeonsheets.features.features import Feature


class _SpecialistSpells(Feature):
    """Starting at 3rd level, you always have certain spells pre­pared after
    you reach particular levels in this class, as shown in the Specialization
    Spells table. These spells count as artificer spells for you, but they
    don't count against the number of artificer spells you prepare.
    """
    _name = "Select One"
    source = "Artificer"
    _spells = {
            3: [],
            5: [],
            9: [],
            13: [],
            17: []
            }
    spells_known = []
    spells_prepared = []

    @property
    def name(self):
        return "{:s} Spells".format(self._name)

    def __init__(self, owner=None):
        if owner is not None:
            level = owner.Artificer.level
            for lvl, spl in self._spells.items():
                if level >= lvl:
                    self.spells_known.extend(spl)
                    self.spells_prepared.extend(spl)
        super().__init__(owner=owner)


# Alchemist
class ArtificerSpellcasting(Feature):
    """You have studied the workings of magic and how to channel it through
    objects. As a result, you have gained the ability to cast spells. To
    observers, you don't appear to be casting spells in a conventional way; you
    look as if you're producing wonders using mundane items or out­landish
    inventions.

    **Tools Required** You produce your artificer spell effects through your
    tools. You must have a spellcasting focus-specifically thieves' tools or
    some kind of artisan's tool-in hand when you cast any spell with this
    Spellcasting feature. You must be proficient with the tool to use it in
    this way. See chapter 5,  "Equipment," in the Player's Handbook for
    descriptions of these tools.

    After you gain the Infuse Item feature at 2nd level, you can also use any
    item bearing one of your infusions as a spellcasting focus.
    """

    name = "Spellcasting"
    source = "Artificer"


class ArtificerRitualCasting(Feature):
    """You can cast an artificer spell as a ritual if that spell has the ritual
    tag and you have the spell prepared.
    """

    name = "Ritual Casting"
    source = "Artificer"


class FirearmProficiency(Feature):
    """The secrets of creating and operating gunpowder weapons have been
    discovered in various corners of the D&D multiverse. If your Dungeon Master
    uses the rules on firearms in chapter 9 of the Dungeon Master's Guide and
    your artificer has been exposed to the operation of such weapons, your
    artificer is proficient with them.
    """

    name = "Optional Rule: Firearm Proficiency"
    source = "Artificer"


class MagicalTinkering(Feature):
    """At 1st level, you learn how to invest a spark of magic into mundane
    objects. To use this ability, you must have tinker's tools or other
    artisan's tools  in hand. You then touch a Tiny nonmagical object as an
    action and give it one of the following magical properties of your choice:

    - The object sheds bright light in a 5-foot radius and dim light for an
      additional 5 fe et.

    - Whenever tapped by a creature, the object emits a recorded message that
      can be heard up to 10 feet away. You utter the message when you bestow
      this property on the object, and the recording can be no more than 6
      seconds long.

    - The object continuously emits your choice of an odor or a nonverbal sound
      (wind, waves, chirping, or the like). The chosen phenomenon is
      perceivable up to  10 feet away.

    - A static visual effect appears on one of the object's surfaces. This
      effect can be a picture, up to 25 words of text, lines and shapes, or a
      mixture of these elements, as you like. The chosen property lasts
      indefinitely. As an action, you can touch the object and end the property
      early. You can bestow magic on multiple objects, touching one object each
      time you use this feature, though a single  object can only bear one
      property at a time. The maximum number of objects you can affect with
      this feature at one time is equal to your Intelligence modifier (minimum
      of one object). If you try to exceed your maximum, the oldest property
      immediately ends, and then the new property applies.
    """

    name = "Magical Tinkering"
    source = "Artificer"


class InfuseItem(Feature):
    """At 2nd level, you gain the ability to imbue mundane items with certain
    magical infusions. The magic items you create with this feature are
    effectively prototypes of permanent items.

    **Infusions known**
    When you gain this feature, pick four artificer infusions
    to learn, choosing from the "Artificer Infusions" section at the end of the
    class's description. You learn additional infusions of your choice when you
    reach certain levels in this class, as shown in the Infusions Known column
    of the Artificer table. Whenever you gain a level in this class, you can
    re­place one of the artificer infusions you learned with a new one.

    **Infusing an item**
    Whenever you finish a long rest, you can touch a non­magical object and
    imbue it with one of your artificer in­fusions, turning it into a magic
    item. An infusion works on only certain kinds of objects, as specified in
    the infusion's description. If the item requires attunement, you can
    attune yourself to it the instant you infuse the item. If you decide to
    attune to the item later, you must do so using the normal process for
    attunement (see "Attunement" in chapter 7 of the Dungeon Master's Guide).
    Your infusion remains in an item indefinitely, but when you die, the
    infusion vanishes after a number of days have passed equal to your
    Intelligence modifier (minimum of 1 day). The infusion also vanishes if you
    give up your knowledge of the infusion for another one. You can infuse more
    than one nonmagical object at the end of a long rest; the maximum number of
    objects appears in the Infused Items column of the Artificer table. You
    must touch each of the objects, and each of your infusions can be in only
    one object at a time. Moreover, no object can bear more than one of your
    infusions at a time. If you try to exceed your maximum number of
    in­fusions,  the  oldest infusion immediately ends, and then the new
    infusion applies.
    """

    _name = "Infuse Item"
    source = "Artificer"
    _infusions = {
            # level: (infusions known, infused items)
            2:  (4, 2),
            3:  (4, 2),
            4:  (4, 2),
            5:  (4, 2),
            5:  (4, 2),
            6:  (6, 3),
            7:  (6, 3),
            8:  (6, 3),
            9:  (6, 3),
            10: (8, 4),
            11: (8, 4),
            12: (8, 4),
            13: (8, 4),
            14: (10, 5),
            15: (10, 5),
            16: (10, 5),
            17: (10, 5),
            18: (12, 6),
            19: (12, 6),
            20: (12, 6),
            }

    @property
    def name(self):
        known_infusions = self._infusions[self.owner.Artificer.level][0]
        infused_items = self._infusions[self.owner.Artificer.level][1]
        return self._name + " ({:d} Infusions Known, {:d} Infused Items)".format(
                known_infusions, infused_items)


class ArtificerSpecialist(Feature):
    """At 3rd level, you choose the type of specialist you are: Alchemist,
    Artillerist, or Battle Smith, each of which is detailed at the end of the
    class's description. Your choice grants you features at 5th level and again
    at 9th and 15th level.
    """

    name = "Artificer Specialist"
    source = "Artificer"


class TheRightToolForTheJob(Feature):
    """At 3rd level, you learn how to produce exactly the tool you need: with
    tinker's tools in hand, you can magically create one set of artisan's tools
    in an unoccupied space within 5 feet of you. This creation requires 1 hour
    of uninterrupted work, which can coincide with a short or long rest.
    Though the product of magic, the tools are nonmagical, and they vanish when
    you use this feature again.
    """

    name = "The Right Tool For The Job"
    source = "Artificer"


class ToolExpertise(Feature):
    """Starting at 6th level, your proficiency bonus is doubled for any ability
    check you make that uses your proficiency with a tool.
    """

    name = "Tool Expertise"
    source = "Artificer"


class FlashOfGenius(Feature):
    """Starting at 7th level, you gain the ability to come up with solutions
    under pressure. When you or another creature you can see within 30 feet of
    you makes an ability check or a saving throw, you can use your reaction to
    add your Intelligence modifier to the roll.

    You can use this feature a number of times equal to your Intelligence
    modifier (minimum of once). You regain all expended uses when you finish a
    long rest.
    """

    name = "Flash Of Genius"
    source = "Arificer"


class MagicItemAdept(Feature):
    """When you reach 10th level, you achieve a profound un­derstanding of how
    to use and make magic items:

    - You can attune to up to four magic items at once.

    - If you craft a magic item with a rarity of common or uncommon, it takes
      you a quarter of the normal time, and it costs you half as much of the
      usual gold.
    """

    name = "Magic Item Adept"
    source = "Artificer"


class SpellStoringItem(Feature):
    """At 11th level, you learn how to store a spell in an object. Whenever you
    finish a long rest, you can touch one simple or martial weapon or one item
    that you can use as a spellcasting focus, and you store a spell in it,
    choosing a 1st- or 2nd-level spell from the artificer spell list that
    requires 1 action to cast (you needn't have it prepared).

    While holding the object, a creature can take an action to produce the
    spell's effect from it, using your spellcast­ing ability modifier. If the
    spell requires concentration, the creature must concentrate. The spell
    stays in the ob­ject until it's been used a number of times equal to twice
    your Intelligence  modifier (minimum of twice) or until you use this fe
    ature again to store a spell in an object.
    """

    name = "Spell-Storing Item"
    source = "Artificer"


class MagicItemSavant(Feature):
    """At 14th level, your skill with magic items deepens more:

    - You can attune to up to five magic items at once.

    - You ignore all class, race, spell, and level require­ments on attuning to
      or using a magic item.
    """

    name = "Magic Item Savant"
    source = "Artificer"


class MagicItemMaster(Feature):
    """Starting at  18th level, you can attune to up to six magic items at
    once.
    """

    name = "Magic Item Master"
    source = "Artificer"


class SoulOfArtifice(Feature):
    """At 20th level, you develop a mystical connection to your magic items,
    which you can draw on for protection:

    - You gain a +1 bonus to all saving throws per magic item you are currently
      attuned to.

    - If you're reduced to 0 hit points but not killed out­right, you can use
      your reaction to end one of your artificer infusions, causing you to drop
      to 1 hit point instead of 0.
    """

    name = "Soul of Artifice"
    source = "Artificer"


# Alchemist
class AlchemistToolProficiency(Feature):
    """When you adopt this specialization at 3rd level, you gain proficiency
    with alchemist's supplies. If you already have this proficiency,  you gain
    proficiency with one other type of artisan's tools of your choice.
    """

    name = "Tool Proficiency"
    source = "Artificer (Alchemist)"


class AlchemistSpells(_SpecialistSpells):
    """Starting at 3rd level, you always have certain spells pre­pared after
    you reach particular levels in this class, as shown in the Alchemist Spells
    table. These spells count as artificer spells for you, but they don't count
    against the number of artificer spells you prepare.
    """

    _name = "Alchemist"
    _spells = {
            3: [spells.HealingWord, spells.RayOfSickness],
            5: [spells.FlamingSphere, spells.MelfsAcidArrow],
            9: [spells.GaseousForm, spells.MassHealingWord],
            13: [spells.Blight, spells.DeathWard],
            17: [spells.Cloudkill, spells.RaiseDead]
            }


class ExperimentalElixir(Feature):
    """Beginning at 3rd level, whenever you finish a long rest, you can
    magically produce an *experimental elixir* in an empty flask you touch.
    Roll on the Experimental Elixir table for the elixir's effect, which is
    triggered when someone drinks the elixir. As an action, a creature can
    drink the elixir or administer it to an incapacitated creature.

    Creating an *experimental elixir* requires you to have alchemist supplies
    on your person, and any elixir you create with this feature lasts until it
    is drunk or until the end of your next long rest.

    When you reach certain levels in this class, you can make more elixirs at
    the end of a long rest: two at 6th level and three at  15th level. Roll for
    each elixir's effect separately. Each elixir requires its own flask.

    You can create additional *experimental elixirs* by expending a spell slot
    of 1st level or higher for each one. When you do so, you use your action to
    create the elixir in an empty flask you touch, and you choose the elixir's
    effect from the Experimental Elixir table.

    **Experimental Elixir**

    roll d6

    **1 -- Healing.** The drinker regains a number of hit points equal to 2d4 +
    your Intelligence modifier.

    **2 -- Swiftness.** The drinker's walking speed increases by 10 feet for 1
    hour.

    **3 --  Resilience.** The drinker gains a +1 bonus to AC for 10 minutes.

    **4 -- Boldness.** The drinker can roll a d4 and add the num­ber rolled to
    every attack roll and saving throw they make for the next minute.

    **5 -- Flight.** The drinker gains a flying speed of 10 feet for 10
    minutes.

    **6 -- Transformation.** The drinker's body is transformed as if by the
    alter self spell. The drinker determines the transformation caused by the
    spell, the effects of which last for 10 minutes.
    """

    name = "Experimental Elixir"
    source = "Artificer (Alchemist)"


class AlchemicalSavant(Feature):
    """At 5th level, you develop masterful command of magical chemicals,
    enhancing the healing and damage you create through them. Whenever you
    cast a spell using your alchemist's supplies as the spellcasting focus, you
    gain a bonus to one roll of the spell. That roll must restore hit points or
    be a damage roll that deals acid, fire, necrotic, or poison damage, and the
    bonus equals your Intelli­gence modifier (minimum of +1).
    """

    name = "Alchemical Savant"
    source = "Artificer (Alchemist)"


class RestorativeReagents(Feature):
    """Starting at 9th level, you can incorporate
    restorative reagents into some of your works:

    - Whenever a creature drinks an experimental elixir you created, the
      creature gains temporary hit points equal to 2d6 + your Intelligence
      modifier (minimum of 1 temporary hit point).

    - You can cast lesser restoration without expending a spell slot and
      without preparing the spell, provided you use alchemist's supplies as the
      spellcasting focus. You can do so a number of times equal to your
      Intelligence modifier (minimum of once), and you regain all expended uses
      when you finish a long rest.
    """

    name = "Restorative Reagents"
    source = "Artificer (Alchemist)"


class ChemicalMastery(Feature):
    """By 15th level, you have been  exposed to so many chemicals that they
    pose little risk to you, and you can use them to quickly end certain
    ailments:

    - You gain resistance to acid damage and poison damage, and you are immune
      to the poisoned condition.

    - You can cast greater restoration and heal without expending a spell
      slot, without preparing the spell, and without material components,
      provided you use alchemist's supplies as the spellcasting focus. Once
      you cast either spell with this feature, you can't cast that spell with
      it again until you finish a long rest.
    """

    name = "Chemical Mastery"
    source = "Artificer (Alchemist)"


# Artillerist
class ArtilleristSpells(_SpecialistSpells):
    """Starting at 3rd level, you always have certain spells prepared after
    you reach particular levels in this class, as shown in the Artillerist
    Spells table. These spells count as artificer spells for you, but they
    don't count against the number of artificer spells you prepare.
    """

    _name = "Artillerist"
    _spells = {
            3: [spells.Shield, spells.Thunderwave],
            5: [spells.ScorchingRay, spells.Shatter],
            9: [spells.Fireball, spells.WindWall],
            13: [spells.IceStorm, spells.WallOfFire],
            17: [spells.ConeOfCold, spells.WallOfForce]
            }


class ArtilleristToolProficiency(Feature):
    """When you adopt this specialization at 3rd level, you gain proficiency
    with woodcarver's tools. If you already have this proficiency, you gain
    proficiency with one other type of artisan's tools of your choice.
    """

    name = "Tool Proficiency"
    source = "Artificer (Artillerist)"


class EldritchCannon(Feature):
    """At 3rd level, you learn how to create a magical cannon. Using
    woodcarver's tools or smith's tools, you can take an action to magically
    create a Small or Tiny eldritch cannon in an unoccupied space on a
    horizontal surface within 5 feet of you. A Small eldritch cannon occupies
    its space, and a Tiny one can be held in one hand.

    Once you create a cannon, you can't do so again until you finish a long
    rest or until you expend a spell slot of 1st level or higher. You can have
    only one cannon at a time and can't create one while your cannon is
    present.

    The cannon is a magical object. Regardless of size, the cannon has an AC of
    18 and a number of hit points equal to five times your artificer level. It
    is immune to poison damage, psychic damage, and all conditions. If it is
    forced to make an ability check or a saving throw, treat all its ability
    scores as 10 (+O). If the *mending* spell is cast on it, it regains 2d6 hit
    points. It disappears if it is reduced to 0 hit points or after 1 hour. You
    can dismiss it early as an action.

    When you create the cannon, you determine its appearance and whether it
    has legs. You also decide which type it is, choosing from the options on
    the Eldritch Cannons table. On each of your turns, you can take a bonus
    action to cause the cannon to activate if you are within 60 feet of it. As
    part of the same bonus action, you can direct the cannon to walk or climb
    up to 15 feet to an unoccupied space, provided it has legs.

    **Eldritch Cannons**

    *Flamethrower*: The cannon exhales fire in an adjacent 15-foot cone that
    you designate. Each creature in that area must make a  Dexterity saving
    throw against your spell save DC, taking 2d8 fire damage on a failed save
    or half as much damage on a successful one. The fire ignites any flammable
    objects in the area that aren't being worn or carried.

    *Force Ballista*: Make a ranged spell attack, originating from the cannon,
    at one creature or object within 120 feet of it. On a hit, the target takes
    2d8 force damage, and if the target is a creature, it is pushed up to 5
    feet away from the cannon.

    *Protector*: The cannon emits a burst of positive energy
    that grants itself and each creature of your choice within 10 feet of it a
    number of temporary hit points equal to 1d8 + your Intelligence modifier
    (minimum of +1)
    """

    name = "Eldritch Cannon"
    source = "Artificer (Artillerist)"


class ArcaneFirearm(Feature):
    """At 5th level, you know how to turn a wand, staff, or rod into an arcane
    firearm, a conduit for your destructive spells. When you finish a long
    rest, you can use wood­carver's tools to carve special sigils into a wand,
    staff, or rod and thereby turn it into your arcane firearm. The sigils
    disappear from the object if you later carve them on a different item. The
    sigils otherwise last indefinitely.

    You can use your arcane firearm as a spellcasting focus for your artificer
    spells. When you cast an artificer spell through the firearm, roll a d8,
    and you gain a bonus to one of the spell's damage rolls equal to the
    number rolled.
    """

    name = "Arcane Firearm"
    source = "Artificer (Artillerist)"


class ExplosiveCannon(Feature):
    """Starting at 9th level, every eldritch cannon you create is more
    destructive:

    - The cannon's damage rolls all increase by 1d8.

    - As an action, you can command the cannon to detonate if you are within 60
      feet of it. Doing so destroys the cannon and forces each creature within
      20 feet of it to make a Dexterity saving throw against your spell save
      DC, taking 3d8 force damage on a failed save or half as much damage on a
      successful one.
    """

    name = "Explosive Cannon"
    source = "Artificer (Artillerist)"


class FortifiedPosition(Feature):
    """Starting at 15th level, you're a master at forming well-defended
    emplacements using Eldritch Cannon:

    - You and your allies have half cover while within 10 feet of a cannon you
      create with Eldritch Cannon, as a result of a shimmering field of magical
      protection that the cannon emits.

    - You can now have two cannons at the same time. You can create two with
      the same action (but not the same spell slot), and you can activate both
      of them with the same bonus action. You determine whether the cannons are
      identical to each other or different. You can't create a third cannon
      while you have two.
    """

    name = "Fortified Position"
    source = "Artificer (Artillerist)"


# Battle Smith
class BattleSmithSpells(_SpecialistSpells):
    """Starting at 3rd level, you always have certain spells prepared after you
    reach particular levels in this class, as shown in the Battle Smith Spells
    table. These spells count as artificer spells for you, but they don't count
    against the number of artificer spells you prepare.
    """

    _name = "Battle Smith"
    _spells = {
            3: [spells.Heroism, spells.Shield],
            5: [spells.BrandingSmite, spells.WardingBond],
            9: [spells.AuraOfVitality, spells.ConjureBarrage],
            13: [spells.AuraOfPurity, spells.FireShield],
            17: [spells.BanishingSmite, spells.MassCureWounds]
            }


class BattleSmithToolProficiency(Feature):
    """When you adopt this specialization at 3rd level, you gain proficiency
    with smith's tools. If you already have this proficiency, you gain
    proficiency with one other type of artisan's tools of your choice.
    """

    name = "Tool Proficiency"
    source = "Artificer (Battle Smith)"


class BattleReady(Feature):
    """When you reach 3rd level, your combat training and your experiments with
    magic have paid off in two ways:

    - You gain proficiency with martial weapons.

    - When you attack with a magic weapon, you can use your Intelligence
      modifier, instead of Strength or Dexterity modifier, for the attack and
      damage rolls.
    """

    name = "Battle Ready"
    source = "Artificer (Battle Smith)"


class SteelDefender(Feature):
    """By 3rd level, your tinkering has borne you a faithful companion, a steel
    defender. It is friendly to you and your companions, and it obeys your
    commands. See this creature's game statistics in the steel defender stat
    block. You determine the creature's appearance and whether it has two legs
    or fo ur; your choice has no effect on its game statistics.

    In combat, the steel defender shares your initiative count, but it takes
    its turn immediately after yours. It can move and use its reaction on its
    own, but the only action it takes on its turn is the Dodge action, unless
    you take a bonus action on your turn to command it to take one of the
    actions in its stat block or the Dash, Disen­gage, Help, Hide, or Search
    action.

    If the *mending* spell is cast on it, it regains 2d6 hit points. If it has
    died within the last hour, you can use your smith's tools as an action to
    revive it, provided you are within 5 feet of it and you expend a spell slot
    of 1st level or higher. The steel defender returns to life after 1 minute
    with all its hit points restored.

    At the end of a long rest, you can create a new steel defender if you have
    your smith's tools with you. If you already have a steel defender from this
    feature, the first one immediately perishes.
    """

    name = "Steel Defender"
    source = "Artificer (Battle Smith)"


class ExtraAttackBattleSmith(Feature):
    """Starting at 5th level, you can attack twice, rather than once, whenever
    you take the Attack action on your turn.
    """

    name = "Extra Attack"
    source = "Artificer (Battle Smith)"


class ArcaneJolt(Feature):
    """At 9th level, you learn new ways to channel arcane en­ergy to harm or
    heal. When either you hit a target with a magic weapon attack or your steel
    defender hits a target, you can channel magical energy through the strike
    to create one of the following effects:

    - The target takes an extra 2d6 force damage.

    - Choose one creature or object you can see within 30 feet of the target.
      Healing energy flows into the chosen recipient, restoring 2d6 hit points
      to it. You can use this energy a number of times equal to your
      Intelligence modifier (minimum of once), but you can do so no more than
      once on a turn. You regain  all expended uses when you finish a long rest
    """

    name = "Arcane Jolt"
    source = "Artificer (Battle Smith)"


class ImprovedDefender(Feature):
    """At 15th level, your Arcane jolt and steel defender be­come more
    powerful:

    - The extra damage and the healing of your Arcane jolt both increase to
      4d6.

    - Your steel defender gains a +2 bonus to Armor Class.

    - Whenever your steel defender uses its Deflect Attack, the attacker takes
      force damage equal to 1d4 +your Intelligence modifier.
    """

    name = "Improved Defender"
    source = "Artificer (Battle Smith)"