问题:Pygame - 声音延迟

我创建了一个按钮类来检查是否选择了按钮(当鼠标悬停在按钮上时)。当按钮被选中、取消选中或单击时,它会播放一个 wav 文件。问题是声音播放和按钮状态更改之间存在巨大延迟。程序应检查每一帧以查看是否满足播放声音的条件,但 fps 似乎不是问题(60 和 600 fps 给出相同的延迟)。我试过减少pygame.mixer.init()中的缓冲区值,但这也没有区别。

声音文件:

buttonSoundSelect = pygame.mixer.Sound(os.path.join(soundPath, "button1.wav"))
buttonSoundUnselect = pygame.mixer.Sound(os.path.join(soundPath, "button2.wav"))
buttonSoundClick = pygame.mixer.Sound(os.path.join(soundPath, "button3.wav"))
buttonSounds = [buttonSoundSelect, buttonSoundUnselect, buttonSoundClick]
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创建对象:

playButton = button(textInactive = "Play", font = mainFont, sounds = buttonSounds,  command = playAction)
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按钮类中检查按钮是否被选中的代码(这是在每帧调用的方法.display中):

    if pygame.mouse.get_pos()[0] >= self.x and pygame.mouse.get_pos()[0] <= self.x + self.width and \
       pygame.mouse.get_pos()[1] >= self.y and pygame.mouse.get_pos()[1] <= self.y + self.height:

        self.surfaceActive.blit(self.textSurfaceActive, (self.width / 2 - self.font.size(self.textActive)[0] / 2,
                                                   self.height / 2 - self.font.size(self.textActive)[1] / 2))

        self.surface.blit(self.surfaceActive, (self.x, self.y))

        if self.selected == False:
            if self.sounds != None:
                self.sounds[0].stop()
                self.sounds[1].stop()
                self.sounds[2].stop()
                self.sounds[0].play()
            self.selected = True

    else:

        self.surfaceInactive.blit(self.textSurfaceInactive, (self.width / 2 - self.font.size(self.textInactive)[0] / 2,
                                                     self.height / 2 - self.font.size(self.textInactive)[1] / 2))

        self.surface.blit(self.surfaceInactive, (self.x, self.y))

        if self.selected == True:
            if self.sounds != None:
                self.sounds[0].stop()
                self.sounds[1].stop()
                self.sounds[2].stop()
                self.sounds[1].play()
            self.selected = False
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来自按钮类的代码,用于检查按钮是否被单击(这是在单击鼠标左键时调用的方法.clickEvent内部):

    if self.command != None:

        if pygame.mouse.get_pos()[0] >= self.x and pygame.mouse.get_pos()[0] <= self.x + self.width and \
           pygame.mouse.get_pos()[1] >= self.y and pygame.mouse.get_pos()[1] <= self.y + self.height:    

            if self.sounds != None:
                self.sounds[2].play()
            self.command()
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所以我的问题是:为什么会有很长的延迟,我可以缩短它吗?

解答

减小缓冲区的大小将减少延迟。缓冲区必须是 2 的幂。默认缓冲区是 4096,但您可以在初始化混音器时更改它,如下所示:

pygame.mixer.init(44100, -16, 2, 64)
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更多信息可以在pygame 文档中找到