我碰到一个计时器小错误

Question

我的计时器遇到了一个错误。当我暂停游戏时，我注意到我的计时器不会随着游戏暂停太久。示例：如果我在计时器还剩26秒时暂停游戏，大约10秒后取消暂停游戏，计时器会说还剩16秒，而不是像我希望的那样从26开始倒计时。如果我暂停游戏30秒，计时器仍然会降到0，而不是随游戏暂停。我该怎么解决这个问题？

我的游戏运行代码：

#game runs here
run = True
paused = False
while run:
for event in pygame.event.get():
if event.type == pygame.USEREVENT:
counter -= 1
text = str(counter).rjust(3) if counter > 0 else 'GAME OVER!'
if event.type == pygame.QUIT:
run = False
#pause game
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_p:
paused = not paused
#check if key is down
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
run = False
if event.key == pygame.K_a:
player.movingLeft = True
if event.key == pygame.K_d:
player.movingRight = True
if event.key == pygame.K_SPACE:
player.shoot()
shoot = True
#check if key is up
if event.type == pygame.KEYUP:
if event.key == pygame.K_a:
player.movingLeft = False
if event.key == pygame.K_d:
player.movingRight = False
if paused:
continue
#draw street
screen.blit(bg, [0, 0])
#draw timer
screen.blit(timer_font.render(text, True, (0,0,0)), (800, 10))
#update groups
bullet_group.update()
bullet_group.draw(screen)
debris_group.update()
debris_group.draw(screen)
#draw car
player.draw()
player.move()
player.collision(debris_group)
player.stats()
#update all sprites
all_sprites.update()
all_sprites.draw(screen)
#update the display
pygame.display.update()
pygame.display.flip()
clock.tick(FPS)
pygame.quit()

Answer 1

可以通过将0传递给pygame.time.set_timer的time参数来停止计时器事件。

切换pause状态时停止并重新启动计时器事件：

run = True
paused = False
while run:
for event in pygame.event.get():
if event.type == pygame.USEREVENT:
counter -= 1
text = str(counter).rjust(3) if counter > 0 else 'GAME OVER!'
if event.type == pygame.QUIT:
run = False
#pause game
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_p:
paused = not paused
if pause:
pygame.time.set_timer(pygame.USEREVENT, 0)    # stop timer
else:
pygame.time.set_timer(pygame.USEREVENT, 1000) # 1 second interval

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