使用pygame事件突破python for循环

Question

我遇到了一个问题，在python中突破for循环，使用pygame。具体来说，我试图突破释放密钥的循环。例如，当按住"W“键时，代码应该执行，但在释放"W”时立即中断循环。

我尝试过使用pygame.key.get_pressed()和if event.type == KEYUP:，但是我似乎无法正确地理解它。有人能帮忙吗？

while 1:
  for event in pygame.event.get():   
    if event.type == pygame.QUIT: 
      doQuitStuff()
    elif event.type == pygame.MOUSEBUTTONDOWN:
      doMouseButtonStuff()
    elif event.type == KEYDOWN:
      if event.key == pygame.K_p:
        doPStuff()
      elif event.key == pygame.K_e:
        doEStuff()
      elif event.key in foo:
        doFooStuff()
        for i in xrange(100):
          doThisStuffOnlyIfKeyInFooIsHeldDown() #This for loop finishes
                                                #execution even if I release the
                                                #key in "foo"      

Answer 1

您必须不使用for循环，而while True将作为循环处理。

run_loop = False
i = 0

while True:

    # - events -

    for event in pygame.event.get():

        if event.type == KEYDOWN:
           if event.key == pygame.K_w:
              # start loop
              run_loop = True
              i = 0

        elif event.type == KEYUP:
           if event.key == pygame.K_w:
              # stop loop
              run_loop = False

    # - updates -

    if run_loop and i < 100:
        i += 1
        doThisStuffOnlyIfKeyInFooIsHeldDown() 

    # - draws -