您可以使用 pygame.time.set_timer() 生成滴答事件"，在事件处理循环中遇到时会更新时钟的图像.

You could do it by using pygame.time.set_timer() to make "tick events" be generated which cause the clock's image to be updated when encountered in the event processing loop.

为了更轻松地实现这一点，可以将 update() 方法添加到 DigitalClock 类(这是我重命名您的通用 TextPicture 类> class) 只更新图像，但不保留当前位置:

To make implementing this easier, an update() method could be added to the DigitalClock class (which is what I renamed your generic TextPicture class) which only updates the image, but leaving the current location alone:

import datetime
import sys
import time
import pygame

class DigitalClock(pygame.sprite.Sprite):
    def __init__(self, speed, location):
        pygame.sprite.Sprite.__init__(self)
        self.speed = speed
        self.font = pygame.font.Font(None, 40)
        self.rect = pygame.Rect(location, (0, 0))  # placeholder
        self.update()

    def update(self):
        location = self.rect.left, self.rect.top  # save position
        time_text = datetime.datetime.now().strftime("%H:%M:%S")
        self.image = self.font.render(time_text, 1, [0, 0, 0])
        self.rect = self.image.get_rect()
        self.rect.left, self.rect.top = location  # restore position

    def move(self):
        self.rect = self.rect.move(self.speed)
        if (self.rect.left < 0
            or self.rect.left > screen.get_width()-self.image.get_width()):
            self.speed[0] = -self.speed[0]
        if (self.rect.top < 0
            or self.rect.top > screen.get_height()-self.image.get_height()):
            self.speed[1] = -self.speed[1]

在此之后，您需要将处理修改为以下几行:

Following that, you'd need to modify the processing to be something along these lines:

pygame.init()
framerate_clock = pygame.time.Clock()
screen = pygame.display.set_mode([640, 480])
my_digital_clock = DigitalClock([1, 1], [50, 50])
TICK_EVENT = pygame.USEREVENT + 1
pygame.time.set_timer(TICK_EVENT, 1000)  # periodically create TICK_EVENT

while True:
    for event in pygame.event.get():
        if event.type == TICK_EVENT:
            my_digital_clock.update()  # call new method
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()

    screen.fill([255, 255, 255])
    my_digital_clock.move()
    screen.blit(my_digital_clock.image, my_digital_clock.rect)

    framerate_clock.tick(60)  # limit framerate
    pygame.display.flip()

您可以使用不同的字体和颜色使其更美观.一般来说，任何使它看起来更逼真的东西都会是一种改进.让数字字符之间的冒号闪烁(使用类似的技术)可能很酷.

You could make it more beautiful by using a different font and color. Generally anything that made it look more realistic would be an improvement. It might be cool to make the colons between the digit characters blink on and off (using a similar technique).