[英]Integer variables not updating in python
在我的代码开始时,我做了两个变量
WINDOW_WIDTH = 400
WINDOW_HEIGHT = 300
稍后,在def main()中,如果发生事件的方式如下,我将对其进行更改
while True:
for event in pygame.event.get():
if event.type == VIDEORESIZE:
DISPLAY = pygame.display.set_mode(event.dict['size'], HWSURFACE | DOUBLEBUF | RESIZABLE)
# Here, the integers are supposed to be being changed
WINDOW_WIDTH, WINDOW_HEIGHT = DISPLAY.get_size()
print("%d, %d" % (WINDOW_WIDTH, WINDOW_HEIGHT))
drawArena()
更改下方的打印语句表明已进行更改。 然后在drawArena()中执行以下操作:
print("Drawing (%d, %d)" % (WINDOW_WIDTH, WINDOW_HEIGHT))
但是窗口的高度和宽度没有变化,并且具有与首次初始化时相同的值。
您需要声明这些变量是全局变量
global WINDOW_HEIGHT,WINDOW_WIDTH
while True:
for event in pygame.event.get():
if event.type == VIDEORESIZE:
DISPLAY = pygame.display.set_mode(event.dict['size'], HWSURFACE | DOUBLEBUF | RESIZABLE) # Here, the integers are supposed to be being changed
WINDOW_WIDTH, WINDOW_HEIGHT = DISPLAY.get_size()
print("%d, %d" % (WINDOW_WIDTH, WINDOW_HEIGHT))
drawArena()
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