尽管 pygame 事件处理，IDE 崩溃。为什么？

Question

我目前使用的 IDE 是 jupyter notebook，但每当我单击图形窗口顶部的十字按钮时，它就会停止响应。这很令人困惑，特别是因为我在我的班级的 check_events 方法中使用 event.type == pygame.QUIT 打破了循环。我究竟做错了什么？以下是我的代码：

class Game():
    def __init__(self):
        pygame.init() #Provides access to all the features of pygame
        self.running, self.playing = True, False
        self.UP_KEY, self.DOWN_KEY, self.START_KEY, self.BACK_KEY = False, False, False, False
        self.DISPLAY_W, self.DISPLAY_H = 480, 270 #Display width and display height variables to determine canvas size
        #In other words, these are canvas dimensions
        self.display = pygame.Surface((self.DISPLAY_W, self.DISPLAY_H)) #Creating our canvas
        self.window = pygame.display.set_mode((self.DISPLAY_W, self.DISPLAY_H)) #Creating our window
        self.font_name = pygame.font.get_default_font()
        self.BLACK, self.WHITE = (0,0,0), (255,255,255) #RGB values for these colors
        
    def game_loop(self):
        while self.playing:
            self.check_events() #To see what the player is doing while playing the game
            if self.START_KEY:
                self.playing = False
            self.display.fill(self.BLACK) #Resetting our frame
            self.draw_text("Welcome to Ants vs Bees", 20, self.DISPLAY_W/2, self.DISPLAY_H/2)
            self.window.blit(self.display, (0,0)) #Aligning our display with our window
            pygame.display.update() #Moves the image onto our screen
            self.reset_keys()
            
    def check_events(self):
        for event in pygame.event.get(): 
            #Goes through a list of everything a player can do on the computer
            if event.type == pygame.QUIT: #To check if players hits the cross button at top of window
                self.running, self.playing = False, False
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_RETURN: #To check if enter key was pressed
                        self.START_KEY = True
                    if event.key == pygame.K_BACKSPACE: #To check if backspace key was pressed
                        self.BACK_KEY = True
                    if event.key == pygame.K_DOWN: #To check if down key was pressed
                        self.DOWN_KEY = True
                    if event.key == pygame.K_UP: #To check if up key was pressed
                        self.UP_KEY = True
                    
    def reset_keys(self):
        self.UP_KEY, self.DOWN_KEY, self.START_KEY, self.BACK_KEY = False, False, False, False
        
    def draw_text(self, text, size, x, y):
        font = pygame.font.Font(self.font_name, size) #Loading up our font
        text_surface = font.render(text, True, self.WHITE) #Creates a rectangular image of our text
        text_rect = text_surface.get_rect()
        text_rect.center = (x,y)
        self.display.blit(text_surface, text_rect)

#Driver code
firstrun = Game()

while firstrun.running:
    firstrun.playing = True
    firstrun.game_loop()

Answer 1

在您的check_events 函数中：

    def check_events(self):
        for event in pygame.event.get(): 
            #Goes through a list of everything a player can do on the computer
            if event.type == pygame.QUIT: #To check if players hits the cross button at top of window
                self.running, self.playing = False, False
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_RETURN: #To check if enter key was pressed
                        self.START_KEY = True
                    if event.key == pygame.K_BACKSPACE: #To check if backspace key was pressed
                        self.BACK_KEY = True
                    if event.key == pygame.K_DOWN: #To check if down key was pressed
                        self.DOWN_KEY = True
                    if event.key == pygame.K_UP: #To check if up key was pressed
                        self.UP_KEY = True

您已将 if event.type == pygame.KEYDOWN 缩进到 if event.type == pygame.QUIT 语句中。试试：

    def check_events(self):
        for event in pygame.event.get(): 
            #Goes through a list of everything a player can do on the computer
            if event.type == pygame.QUIT: #To check if players hits the cross button at top of window
                self.running, self.playing = False, False
            elif event.type == pygame.KEYDOWN:
                if event.key == pygame.K_RETURN: #To check if enter key was pressed
                    self.START_KEY = True
                if event.key == pygame.K_BACKSPACE: #To check if backspace key was pressed
                    self.BACK_KEY = True
                if event.key == pygame.K_DOWN: #To check if down key was pressed
                    self.DOWN_KEY = True
                if event.key == pygame.K_UP: #To check if up key was pressed
                    self.UP_KEY = True

最后，在game_loop 函数的末尾添加一个pygame.quit()：

    def game_loop(self):
        while self.playing:
            self.check_events() #To see what the player is doing while playing the game
            if self.START_KEY:
                self.playing = False
            self.display.fill(self.BLACK) #Resetting our frame
            self.draw_text("Welcome to Ants vs Bees", 20, self.DISPLAY_W/2, self.DISPLAY_H/2)
            self.window.blit(self.display, (0,0)) #Aligning our display with our window
            pygame.display.update() #Moves the image onto our screen
            self.reset_keys()
        pygame.quit()