python - 尝试在 PYGAME 中随机进行随机图像 block 传输

Question

我有一个有趣的问题。我需要使图像必须随机出现在随机位置，如果它与我的 GAMER 碰撞，它必须影响 GAMER(某些功能)与 GAMER 恰好 3 秒，然后消失并在随机时间后再次出现。
.我有一个想法，但它不起作用。(注意:这是我已经初始化所有代码的一部分)

clock = pygame.time.Clock()  
FPS = 30 
playtime = 0
newtime=random.randint(3,10) 
while mainloop:
    milliseconds = clock.tick(FPS) 
    seconds = milliseconds / 1000.0
    playtime += seconds
    if playtime>=newtime:
    image.draw() 
    newtime=random.randint(2,6) #because next appear time must change 
    if collision(GAMER,image):
       GAMER.do_something()  #how to do it exactly for 3 sec?
       image.far_away() #just dissapear for some time

Answer 1

当您谈论图像时，您谈论的是 pygame.Surface .一个 pygame.Surface可以 blit()到显示(分别是与窗口关联的 Surface)。例如

screen.blit(image, image_rect)

您不能将表面移到很远的地方。您必须在每一帧中绘制整个场景，并且必须在每一帧的显示表面上绘制 ( blit) 图像。
您可以更改图像的位置。当时间跨度超过时创建一个随机位置:

position = random.randint(0, window_height), random.randint(0, window_width)
image_rect = image.get_rect(center = position)

当玩家与图像碰撞时，则设置计算 future 3 秒的时间点。只要不超过 3 秒，就会对玩家产生影响:

if image_rect.colliderect(GAMER.rect):
    affecttime = playtime + 3

if playtime < affecttime:
    GAMER.do_something()

一般流程:

clock = pygame.time.Clock()  
FPS = 30 
newtime=random.randint(3,10)
playtime = 0
affecttime = 0

position = random.randint(0, window_height), random.randint(0, window_width)
image_rect = image.get_rect(center = position)

while mainloop:
    milliseconds = clock.tick(FPS)
    seconds = milliseconds / 1000.0
    playtime += seconds

    # handle events (event loop)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            mainloop = False

    if playtime >= newtime:
        newtime = playtime + random.randint(2,6) 
        position = random.randint(0, window_height), random.randint(0, window_width)
        image_rect = image.get_rect(center = position)

    if image_rect.colliderect(GAMER.rect):
        affecttime = playtime + 3
        position = .... # set position far away
        image_rect = image.get_rect(center = position)

    if playtime < affecttime:
        GAMER.do_something()

    # clear dispaly
    scree.fill(0)

    #draw image at the current position
    screen.blit(image, image_rect)

    # update disaply
    pygame.display.update()