start_menu.py

import pygame
import utils
import game
import sound_manager


class StartMenu(object):

    def __init__(self, screen: pygame.Surface):
        self.__screen: pygame.Surface = screen
        # self.__display: pygame.Surface = pygame.Surface(main.SCREEN_SIZE)
        # self.__display.set_alpha(255)
        self.__open_time = utils.current_milli_time()
        # self.__sound = pygame.mixer.Sound('assets/sound/music/ps_1.mp3')
        self.__sound = pygame.mixer.Sound('assets/sound/music/start_japan.mp3')
        self.__logo = pygame.image.load('assets/textures/hud/logo_full.png')

        self.__bg = pygame.image.load('assets/textures/hud/main_screen.png')
        self.__font = pygame.font.Font("assets/font/MyFont-Regular.otf", 24)
        self.__text = self.__font.render('Press a button to play !', True, (0, 0, 0))
        self.__text_size = self.__text.get_rect().size
        self.__clock = pygame.time.Clock()
        self.alpha = 255
        while self.__tick():
            self.__clock.tick(100)

    def dell_var(self):
        del self.__open_time, self.__sound, self.__logo, self.__bg, self.__font, self.__text
        del self.__text_size, self.__clock

    def __tick(self):

        dif_t = utils.current_milli_time() - self.__open_time

        if dif_t < 3000:
            self.__screen.fill((255, 255, 255))
            self.__screen.blit(self.__logo, ((self.__screen.get_size()[0] - 600) // 2, (self.__screen.get_size()[1] - 128) // 2))
        else:

            if sound_manager.MUSIC_CHANNEL.get_sound() is None:
                sound_manager.MUSIC_CHANNEL.play(self.__sound)
            self.__screen.blit(pygame.transform.scale(self.__bg, self.__screen.get_size()), (0, 0))
            self.__screen.blit(self.__text, ((self.__screen.get_size()[0] - self.__text_size[0]) // 2,
                                              (self.__screen.get_size()[1] - self.__text_size[1]) // 2))
            display = pygame.Surface(self.__screen.get_size())
            if self.alpha > 0:
                display.fill((255, 255, 255))
                if self.alpha > 50:
                    display.blit(self.__logo, ((self.__screen.get_size()[0] - 600) // 2, (self.__screen.get_size()[1] - 128) // 2))
                display.set_alpha(max(0, self.alpha))
                self.alpha -= 2
                self.__screen.blit(display, (0, 0))

        pygame.display.update()

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                self.dell_var()
                return False
            if event.type == pygame.KEYDOWN:
                if dif_t > 3000:
                    sound_manager.MUSIC_CHANNEL.stop()
                    self.dell_var()
                    game.Game(self.__screen)
                    return False

        return True