squirrel-battle/squirrelbattle/menus.py

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# Copyright (C) 2020 by ÿnérant, eichhornchen, nicomarg, charlse
# SPDX-License-Identifier: GPL-3.0-or-later
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from enum import Enum
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from typing import Any, Optional
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from .display.texturepack import TexturePack
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from .entities.player import Player
from .entities.friendly import Merchant
from .enums import GameMode, KeyValues, DisplayActions
from .settings import Settings
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from .translations import gettext as _, Translator
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class Menu:
"""
A Menu object is the logical representation of a menu in the game.
"""
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values: list
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def __init__(self):
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self.position = 0
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def go_up(self) -> None:
"""
Moves the pointer of the menu on the previous value.
"""
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self.position = max(0, self.position - 1)
def go_down(self) -> None:
"""
Moves the pointer of the menu on the next value.
"""
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self.position = min(len(self.values) - 1, self.position + 1)
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def validate(self) -> Any:
"""
Selects the value that is pointed by the menu pointer.
"""
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return self.values[self.position]
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class MainMenuValues(Enum):
"""
Values of the main menu.
"""
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START = "New game"
RESUME = "Resume"
SAVE = "Save"
LOAD = "Load"
SETTINGS = "Settings"
EXIT = "Exit"
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def __str__(self):
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return _(self.value)
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class MainMenu(Menu):
"""
A special instance of a menu : the main menu.
"""
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values = [e for e in MainMenuValues]
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class SettingsMenu(Menu):
"""
A special instance of a menu : the settings menu.
"""
waiting_for_key: bool = False
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def update_values(self, settings: Settings) -> None:
self.values = list(settings.__dict__.items())
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self.values.append(("RETURN", ["", _("Back")]))
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def handle_key_pressed(self, key: Optional[KeyValues], raw_key: str,
game: Any) -> None:
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"""
In the setting menu, we can select a setting and change it.
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"""
if not self.waiting_for_key:
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# Navigate normally through the menu.
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if key == KeyValues.SPACE or \
key == KeyValues.ENTER and \
self.position == len(self.values) - 1:
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# Go back
game.display_actions(DisplayActions.UPDATE)
game.state = GameMode.MAINMENU
if key == KeyValues.DOWN:
self.go_down()
if key == KeyValues.UP:
self.go_up()
if key == KeyValues.ENTER and self.position < len(self.values) - 1:
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# Change a setting
option = self.values[self.position][0]
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if option == "TEXTURE_PACK":
game.settings.TEXTURE_PACK = \
TexturePack.get_next_pack_name(
game.settings.TEXTURE_PACK)
game.settings.write_settings()
self.update_values(game.settings)
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elif option == "LOCALE":
game.settings.LOCALE = 'fr' if game.settings.LOCALE == 'en'\
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else 'de' if game.settings.LOCALE == 'fr' else 'es' \
if game.settings.LOCALE == 'de' else 'en'
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Translator.setlocale(game.settings.LOCALE)
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game.settings.write_settings()
self.update_values(game.settings)
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else:
self.waiting_for_key = True
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self.update_values(game.settings)
else:
option = self.values[self.position][0]
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# Don't use an already mapped key
if any(getattr(game.settings, opt) == raw_key
for opt in game.settings.settings_keys if opt != option):
return
setattr(game.settings, option, raw_key)
game.settings.write_settings()
self.waiting_for_key = False
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self.update_values(game.settings)
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class InventoryMenu(Menu):
"""
A special instance of a menu : the menu for the inventory of the player.
"""
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player: Player
def update_player(self, player: Player) -> None:
"""
Updates the player.
"""
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self.player = player
@property
def values(self) -> list:
"""
Returns the values of the menu.
"""
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return self.player.inventory
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class StoreMenu(Menu):
"""
A special instance of a menu : the menu for the inventory of a merchant.
"""
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merchant: Merchant = None
def update_merchant(self, merchant: Merchant) -> None:
"""
Updates the merchant.
"""
self.merchant = merchant
@property
def values(self) -> list:
"""
Returns the values of the menu.
"""
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return self.merchant.inventory if self.merchant else []