Question

在下面的代码中，我在Pygame中得到了一个带有按钮的屏幕。现在，我想单击按钮，然后启动random()函数，并在5秒钟后从按钮开始从屏幕返回到屏幕，让我选择再次单击并再次调用随机函数。

def loop():
    clock = pygame.time.Clock()
    number = 0
    # The button is just a rect.
    button = pygame.Rect(300,300,205,80)
    done = False
    while not done:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                done = True
            # This block is executed once for each MOUSEBUTTONDOWN event.
            elif event.type == pygame.MOUSEBUTTONDOWN:
                # 1 is the left mouse button, 2 is middle, 3 is right.
                if event.button == 1:
                    # `event.pos` is the mouse position.
                    if button.collidepoint(event.pos):
                        # Incremt the number.
                        number += 1

random()
loop()
pygame.quit()

Answer 1

添加一个状态变量（runRandom），该变量指示是否必须运行函数random：

runRandom = False
while not done:

    # [...]

    if runRandom:
        random()

添加用户定义的pygame.event，可将其用作计时器：

runRandomEvent = pygame.USEREVENT + 1

for event in pygame.event.get():

   # [...]

   elif event.type == runRandomEvent:
      # [...]

如果random未运行，则允许按下按钮。如果按下按钮，则进入状态runRandom，并在确定的时间段内（例如5000毫秒= 5秒）启动计时器（pygame.time.set_timer()）：

# [...]

elif event.type == pygame.MOUSEBUTTONDOWN:
    if event.button == 1:
        if button.collidepoint(event.pos) and not runRandom:
            # [...]

            runRandom = True
            pygame.time.set_timer(runRandomEvent, 5000)

时间过去后，请random停止运行runRandom = False并停止计时器：

# [...]

elif event.type == runRandomEvent:
    runRandom = False
    pygame.time.set_timer(runRandomEvent, 0)

以某种方式将建议应用于您的代码：

# define user event for the timer
runRandomEvent = pygame.USEREVENT + 1

def loop():
    clock = pygame.time.Clock()
    number = 0
    # The button is just a rect.
    button = pygame.Rect(300,300,205,80)
    done = False
    runRandom = False
    while not done:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                done = True
            # This block is executed once for each MOUSEBUTTONDOWN event.
            elif event.type == pygame.MOUSEBUTTONDOWN:
                # 1 is the left mouse button, 2 is middle, 3 is right.
                if event.button == 1:
                    # `event.pos` is the mouse position and  "random" is not running
                    if button.collidepoint(event.pos) and not runRandom:
                        # Incremt the number.
                        number += 1

                        # Start timer and enable running "random"
                        runRandom = True
                        pygame.time.set_timer(runRandomEvent, 5000) # 5000 milliseconds

            elif event.type == runRandomEvent:
                runRandom = False
                pygame.time.set_timer(runRandomEvent, 0)

        # [...]

        # run "random"
        if runRandom:
            random()

        # [...]

通过在Pygame中单击按钮来调用功能

1 个答案: