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path: root/pycameltris/screens/Pause.py
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import contextlib
import sys
from typing import Callable, NoReturn

import pygame

from .Screen import Screen
from ..controller import Controller, KeyboardController, JoystickController, Input
from ..misc import UnPause


def handle_input_pressed(controller: Controller, event: pygame.event.Event):
    if controller.get_input_down(event) == Input.PAUSE:
        raise UnPause()


class Pause(Screen):
    def __init__(self, screen: pygame.Surface):
        self.event_handler: dict[int, Callable[[pygame.event.Event], None]] = {}

        def exit(_) -> NoReturn:
            sys.exit()

        self.event_handler[pygame.QUIT] = exit
        self.event_handler[pygame.JOYBUTTONDOWN] = lambda evt: handle_input_pressed(JoystickController(evt.joy), evt)
        self.event_handler[pygame.KEYDOWN] = lambda evt: handle_input_pressed(KeyboardController(pygame.key), evt)


    def refresh(self) -> None:
        pass

    def oneframe(self) -> None:
        try:
            for event in pygame.event.get():
                with contextlib.suppress(KeyError):
                    self.event_handler[event.type](event)
        except UnPause:
            pygame.event.clear()
            raise