如何从python中的循环外部结束循环
如何从python中的循环外部结束循环
提问于 2020-05-25 21:13:50
我用python 3.8.3制作了一个pygame游戏，在我的游戏中我有一个开始屏幕，它在while循环中：
def game_intro():
intro = True
mixer.music.load("musicIntro.mp3")
mixer.music.set_volume(0.02)
mixer.music.play(-1)
while intro:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_RETURN:
intro = False
screen.blit(startscherm_img, bordrect)
clock.tick(30)
button("Start",302,517,94,44,donkerOranje,lichtOranje,"start")
button("Music",553,517,94,44,donkerOranje,lichtOranje,"toggleMusic")
button("Quit",803,517,94,44,donkerOranje,lichtOranje,"quit")
pygame.display.flip()
game_intro()我调用上面定义的按钮函数：
def button(msg,x,y,w,h,ic,ac,action=None):
mousePos = pygame.mouse.get_pos()
click = pygame.mouse.get_pressed()
if x+w > mousePos[0] > x and y+h > mousePos[1] > y:
pygame.draw.rect(screen, ac, (x,y,w,h))
if click[0] == 1 and action != None:
if action == "toggleMusic":
PAUSE.toggle()
time.sleep(0.3)
elif action == "quit":
pygame.quit()
time.sleep(0.3)
elif action == "start":
time.sleep(0.3)
intro = False
else:
pygame.draw.rect(screen, ic, (x,y,w,h))
smallText = pygame.font.SysFont("Bauhaus 93",30)
textSurf, textRect = text_objecten(msg, smallText)
textRect.center = ( (x+(w/2)), (y+(h/2)) )
screen.blit(textSurf, textRect)它基本上只是检查鼠标在某个区域内的点击，如果它检测到它执行代码。
现在在我的启动屏幕上，我有一个按钮start，我想让它结束game_intro()循环，但是尝试intro = False不会产生任何结果。尝试break不起作用，因为它必须在循环本身中。
所以我的问题是:如何让这个start按钮真正结束game_intro()循环？
附言:我是Python的新手
Stack Overflow用户
发布于 2020-05-25 21:29:24
你可以做一些OOP。尝试在类中创建它，如下所示：
class Intro:
def __init__(self):
self.intro = True
def game_intro(self):
mixer.music.load("musicIntro.mp3")
mixer.music.set_volume(0.02)
mixer.music.play(-1)
while self.intro:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_RETURN:
self.intro = False
screen.blit(startscherm_img, bordrect)
clock.tick(30)
button("Start",302,517,94,44,donkerOranje,lichtOranje,"start")
button("Music",553,517,94,44,donkerOranje,lichtOranje,"toggleMusic")
button("Quit",803,517,94,44,donkerOranje,lichtOranje,"quit")
pygame.display.flip()
def button(self, msg,x,y,w,h,ic,ac,action=None):
mousePos = pygame.mouse.get_pos()
click = pygame.mouse.get_pressed()
if x+w > mousePos[0] > x and y+h > mousePos[1] > y:
pygame.draw.rect(screen, ac, (x,y,w,h))
if click[0] == 1 and action != None:
if action == "toggleMusic":
PAUSE.toggle()
time.sleep(0.3)
elif action == "quit":
pygame.quit()
time.sleep(0.3)
elif action == "start":
time.sleep(0.3)
self.intro = False
obj = Intro()
start = obj.gameintro()intro是使用self在实例中定义的，因此可以在类中的任何位置调用它。
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原文链接：
https://stackoverflow.com/questions/62003167
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