259 lines
7.5 KiB
Python
259 lines
7.5 KiB
Python
# Copyright (C) 2020 by ÿnérant, eichhornchen, nicomarg, charlse
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# SPDX-License-Identifier: GPL-3.0-or-later
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from random import choice, randint
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from typing import Optional
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from .player import Player
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from ..interfaces import Entity, FightingEntity, Map, InventoryHolder
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from ..translations import gettext as _
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class Item(Entity):
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"""
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A class for items.
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"""
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held: bool
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held_by: Optional[InventoryHolder]
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price: int
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def __init__(self, held: bool = False,
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held_by: Optional[InventoryHolder] = None,
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price: int = 2, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.held = held
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self.held_by = held_by
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self.price = price
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def drop(self) -> None:
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"""
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The item is dropped from the inventory onto the floor.
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"""
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if self.held:
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self.held_by.inventory.remove(self)
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self.held_by.map.add_entity(self)
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self.move(self.held_by.y, self.held_by.x)
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self.held = False
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self.held_by = None
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def use(self) -> None:
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"""
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Indicates what should be done when the item is used.
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"""
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def equip(self) -> None:
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"""
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Indicates what should be done when the item is equipped.
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"""
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def hold(self, player: InventoryHolder) -> None:
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"""
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The item is taken from the floor and put into the inventory.
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"""
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self.held = True
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self.held_by = player
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self.held_by.map.remove_entity(self)
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player.add_to_inventory(self)
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def save_state(self) -> dict:
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"""
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Saves the state of the item into a dictionary.
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"""
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d = super().save_state()
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d["held"] = self.held
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return d
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@staticmethod
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def get_all_items() -> list:
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"""
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Returns the list of all item classes.
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"""
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return [BodySnatchPotion, Bomb, Heart, Sword]
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def be_sold(self, buyer: InventoryHolder, seller: InventoryHolder) -> bool:
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"""
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Does all necessary actions when an object is to be sold.
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Is overwritten by some classes that cannot exist in the player's
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inventory.
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"""
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if buyer.hazel >= self.price:
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self.hold(buyer)
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seller.remove_from_inventory(self)
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buyer.change_hazel_balance(-self.price)
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seller.change_hazel_balance(self.price)
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return True
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else:
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return False
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class Heart(Item):
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"""
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A heart item to return health to the player.
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"""
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healing: int
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def __init__(self, name: str = "heart", healing: int = 5, price: int = 3,
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*args, **kwargs):
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super().__init__(name=name, price=price, *args, **kwargs)
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self.healing = healing
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def hold(self, entity: InventoryHolder) -> None:
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"""
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When holding a heart, the player is healed and
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the item is not put in the inventory.
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"""
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entity.health = min(entity.maxhealth, entity.health + self.healing)
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entity.map.remove_entity(self)
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def save_state(self) -> dict:
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"""
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Saves the state of the heart into a dictionary.
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"""
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d = super().save_state()
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d["healing"] = self.healing
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return d
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class Bomb(Item):
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"""
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A bomb item intended to deal damage to enemies at long range
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"""
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damage: int = 5
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exploding: bool
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owner: Optional["Player"]
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tick: int
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def __init__(self, name: str = "bomb", damage: int = 5,
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exploding: bool = False, price: int = 4, *args, **kwargs):
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super().__init__(name=name, price=price, *args, **kwargs)
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self.damage = damage
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self.exploding = exploding
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self.tick = 4
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self.owner = None
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def use(self) -> None:
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"""
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When the bomb is used, it is thrown and then it explodes.
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"""
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if self.held:
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self.owner = self.held_by
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super().drop()
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self.exploding = True
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def act(self, m: Map) -> None:
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"""
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Special exploding action of the bomb.
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"""
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if self.exploding:
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if self.tick > 0:
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# The bomb will explode in <tick> moves
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self.tick -= 1
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else:
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# The bomb is exploding.
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# Each entity that is close to the bomb takes damages.
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# The player earn XP if the entity was killed.
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log_message = _("Bomb is exploding.")
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for e in m.entities.copy():
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if abs(e.x - self.x) + abs(e.y - self.y) <= 3 and \
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isinstance(e, FightingEntity):
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log_message += " " + e.take_damage(self, self.damage)
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if e.dead:
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self.owner.add_xp(randint(3, 7))
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m.logs.add_message(log_message)
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m.entities.remove(self)
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# Add sparkles where the bomb exploded.
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explosion = Explosion(y=self.y, x=self.x)
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self.map.add_entity(explosion)
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def save_state(self) -> dict:
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"""
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Saves the state of the bomb into a dictionary.
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"""
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d = super().save_state()
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d["exploding"] = self.exploding
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d["damage"] = self.damage
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return d
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class Explosion(Item):
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"""
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When a bomb explodes, the explosion is displayed.
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"""
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def __init__(self, *args, **kwargs):
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super().__init__(name="explosion", *args, **kwargs)
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def act(self, m: Map) -> None:
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"""
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The bomb disappears after exploding.
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"""
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m.remove_entity(self)
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def hold(self, player: InventoryHolder) -> None:
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"""
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The player can't hold an explosion.
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"""
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pass
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class Weapon(Item):
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"""
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Non-throwable items that improve player damage
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"""
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damage: int
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def __init__(self, damage: int = 3, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.damage = damage
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def save_state(self) -> dict:
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"""
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Saves the state of the weapon into a dictionary
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"""
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d = super().save_state()
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d["damage"] = self.damage
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return d
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class Sword(Weapon):
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"""
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A basic weapon
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"""
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def __init__(self, name: str = "sword", price: int = 20, *args, **kwargs):
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super().__init__(name=name, price=price, *args, **kwargs)
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self.name = name
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class BodySnatchPotion(Item):
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"""
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The body-snatch potion allows to exchange all characteristics with a random
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other entity.
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"""
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def __init__(self, name: str = "body_snatch_potion", price: int = 14,
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*args, **kwargs):
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super().__init__(name=name, price=price, *args, **kwargs)
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def use(self) -> None:
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"""
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Find a valid random entity, then exchange characteristics.
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"""
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valid_entities = self.held_by.map.find_entities(FightingEntity)
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valid_entities.remove(self.held_by)
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entity = choice(valid_entities)
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entity_state = entity.save_state()
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player_state = self.held_by.save_state()
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self.held_by.__dict__.update(entity_state)
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entity.__dict__.update(player_state)
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self.held_by.map.currenty, self.held_by.map.currentx = self.held_by.y,\
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self.held_by.x
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self.held_by.map.logs.add_message(
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_("{player} exchanged its body with {entity}.").format(
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player=self.held_by.translated_name.capitalize(),
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entity=entity.translated_name))
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self.held_by.recalculate_paths()
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self.held_by.inventory.remove(self)
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