大家好，在此先感谢您的帮助。我刚刚发现了pygame（一个用于python的库），我想稍微玩一下，但是我遇到了一个问题。我尝试在代码中使用线程，但是每次启动程序时，该程序始终崩溃。
我已经隔离了问题，并且我知道是thread_1导致崩溃的原因，因为当我注释掉它时，一切都可以正常工作。我试图更改thread_1函数的代码，但是仍然崩溃。我很确定不是导致崩溃的函数animateTitle的内容，而是我使用线程的方式。
import pygame
from pygame.locals import *
from threading import Thread
def encadre(screen):
pygame.draw.line(screen, (250, 250, 250), (230, 140), (520, 140), 3)
pygame.draw.line(screen, (250, 250, 250), (230, 190), (520, 190), 3)
pygame.draw.line(screen, (250, 250, 250), (230, 140), (230, 190), 3)
pygame.draw.line(screen, (250, 250, 250), (520, 140), (520, 190), 3)
def initRoad(screen):
pygame.draw.line(screen, (250, 250, 250), (30, 0), (30, 500))
pygame.draw.line(screen, (250, 250, 250), (100, 0), (100, 500))
pygame.draw.line(screen, (250, 250, 250), (650, 0), (650, 500))
pygame.draw.line(screen, (250, 250, 250), (720, 0), (720, 500))
drawLines(screen)
def drawLines(screen):
i = 0
while i <= 49:
pygame.draw.line(screen, (250, 250, 250), (65, i * 10), (65, (i + 1) * 10))
pygame.draw.line(screen, (250, 250, 250), (685, i * 10), (685, (i + 1) * 10))
i = i + 3
def initText(screen, text1):
text1pos = text1.get_rect()
text1pos.x = 235
text1pos.y = 150
screen.blit(text1, text1pos)
font1 = pygame.font.Font(None, 30)
text1 = font1.render("PLAY", 1, (10, 10, 10))
text1pos = text1.get_rect()
text1pos.x = 210
text1pos.y = 310
screen.blit(text1, text1pos)
font1 = pygame.font.Font(None, 30)
text1 = font1.render("QUIT", 1, (10, 10, 10))
text1pos = text1.get_rect()
text1pos.x = 490
text1pos.y = 310
screen.blit(text1, text1pos)
def animateRoad(screen): # not done
pygame.draw.line(screen, (130, 130, 130), (65, 0), (65, 500))
pygame.draw.line(screen, (130, 130, 130), (685, 0), (685, 500))
def animateTitle(screen, text1):
text1pos = text1.get_rect()
while True:
pygame.draw.rect(screen, (130, 130, 130), (235, 150, 283, 35))
pygame.display.flip()
pygame.time.wait(500)
text1pos.x = 235
text1pos.y = 150
screen.blit(text1, text1pos)
pygame.display.flip()
pygame.time.wait(1000)
def loop(surface1, surface2):
while True:
for event in pygame.event.get():
if event.type == QUIT:
return
if event.type == pygame.MOUSEBUTTONDOWN:
if surface1.topleft[0] <= pygame.mouse.get_pos()[0] <= surface1.topright[0]:
if surface1.topleft[1] <= pygame.mouse.get_pos()[1] <= surface1.bottomleft[1]:
print('play')
if surface2.topleft[0] <= pygame.mouse.get_pos()[0] <= surface2.topright[0]:
if surface2.topleft[1] <= pygame.mouse.get_pos()[1] <= surface2.bottomleft[1]:
return
pygame.display.flip()
pygame.time.wait(10)
def main():
pygame.init()
screen = pygame.display.set_mode((750, 500))
pygame.display.set_caption('Infinite circle run')
background = pygame.Surface(screen.get_size())
background = background.convert()
background.fill((130, 130, 130))
screen.blit(background, (0, 0))
encadre(screen)
initRoad(screen)
surface1 = pygame.Rect(193, 290, 85, 50)
button1 = pygame.draw.rect(screen, (0, 0, 240), surface1)
surface2 = pygame.Rect(472, 290, 85, 50)
button2 = pygame.draw.rect(screen, (240, 0, 0), surface2)
font1 = pygame.font.Font(None, 50)
text1 = font1.render("Infinite circle run", 1, (0, 240, 0))
initText(screen, text1)
pygame.display.flip()
thread_1 = Thread(target=animateTitle(screen, text1), daemon=True)
thread_2 = Thread(target=loop(surface1, surface2))
# thread_3 = Thread(target=animateRoad(screen))
thread_1.start()
thread_2.start()
# thread_3.start()
if __name__ == '__main__':
main()
答案 0 :(得分：3)
线程导致许多问题，一般的经验法则是避免不必要的问题。它们使您的程序不确定，难以调试，难以测试，难以维护且速度较慢（大多数情况下）。在您的程序中，没有使用线程的理由。相反，您应该按顺序执行操作。 Pygame会在必要时隐式创建线程（例如，在处理pygame.mixer时）
为什么不起作用，是因为pygame希望所有事件处理都在主线程中进行。您无法在另一个线程中处理它们，并且由于不正确地处理它们，操作系统将认为您的程序已崩溃。
我举了一个例子来展示制作动画的一种方法。概念是您告诉pygame，经过一定时间后，您想要发布事件。当该事件出现在您的事件循环中时，您需要执行一些操作。
在您的情况下，您告诉pygame在500毫秒后发布DRAW_TEXT_EVENT。当此事件出现在事件循环中时，您首先要告诉pygame不要再发布DRAW_TEXT_EVENT，而是要在1000ms之后发布CLEAR_TEXT_EVENT。然后绘制文本。
1000毫秒后，CLEAR_TEXT_EVENT将出现在事件循环中。现在您基本上做了相同的事情，但是禁用CLEAR_TEXT_EVENT并告诉pygame在500毫秒后发布DRAW_TEXT_EVENT。
我在您的代码中没有做太多更改。我在顶部为事件添加了2个定义。我已经删除了您的函数loop和animateTitle，并将它们放入游戏循环中。最后，我在main函数中添加了游戏循环。
import pygame
from pygame.locals import *
# Events that we're going to post.
DRAW_TEXT_EVENT = pygame.USEREVENT + 1
CLEAR_TEXT_EVENT = pygame.USEREVENT + 2
def encadre(screen):
pygame.draw.line(screen, (250, 250, 250), (230, 140), (520, 140), 3)
pygame.draw.line(screen, (250, 250, 250), (230, 190), (520, 190), 3)
pygame.draw.line(screen, (250, 250, 250), (230, 140), (230, 190), 3)
pygame.draw.line(screen, (250, 250, 250), (520, 140), (520, 190), 3)
def initRoad(screen):
pygame.draw.line(screen, (250, 250, 250), (30, 0), (30, 500))
pygame.draw.line(screen, (250, 250, 250), (100, 0), (100, 500))
pygame.draw.line(screen, (250, 250, 250), (650, 0), (650, 500))
pygame.draw.line(screen, (250, 250, 250), (720, 0), (720, 500))
drawLines(screen)
def drawLines(screen):
i = 0
while i <= 49:
pygame.draw.line(screen, (250, 250, 250), (65, i * 10), (65, (i + 1) * 10))
pygame.draw.line(screen, (250, 250, 250), (685, i * 10), (685, (i + 1) * 10))
i = i + 3
def initText(screen, text1):
text1pos = text1.get_rect()
text1pos.x = 235
text1pos.y = 150
screen.blit(text1, text1pos)
font1 = pygame.font.Font(None, 30)
text1 = font1.render("PLAY", 1, (10, 10, 10))
text1pos = text1.get_rect()
text1pos.x = 210
text1pos.y = 310
screen.blit(text1, text1pos)
font1 = pygame.font.Font(None, 30)
text1 = font1.render("QUIT", 1, (10, 10, 10))
text1pos = text1.get_rect()
text1pos.x = 490
text1pos.y = 310
screen.blit(text1, text1pos)
def animateRoad(screen): # not done
pygame.draw.line(screen, (130, 130, 130), (65, 0), (65, 500))
pygame.draw.line(screen, (130, 130, 130), (685, 0), (685, 500))
def main():
pygame.init()
screen = pygame.display.set_mode((750, 500))
pygame.display.set_caption('Infinite circle run')
background = pygame.Surface(screen.get_size())
background = background.convert()
background.fill((130, 130, 130))
screen.blit(background, (0, 0))
encadre(screen)
initRoad(screen)
surface1 = pygame.Rect(193, 290, 85, 50)
button1 = pygame.draw.rect(screen, (0, 0, 240), surface1)
surface2 = pygame.Rect(472, 290, 85, 50)
button2 = pygame.draw.rect(screen, (240, 0, 0), surface2)
font1 = pygame.font.Font(None, 50)
text1 = font1.render("Infinite circle run", 1, (0, 240, 0))
initText(screen, text1)
pygame.display.flip()
pygame.time.set_timer(DRAW_TEXT_EVENT, 500)
text1pos = text1.get_rect()
# GAME LOOP
while True:
for event in pygame.event.get():
if event.type == QUIT:
return
elif event.type == pygame.MOUSEBUTTONDOWN:
if surface1.topleft[0] <= pygame.mouse.get_pos()[0] <= surface1.topright[0]:
if surface1.topleft[1] <= pygame.mouse.get_pos()[1] <= surface1.bottomleft[1]:
print('play')
elif surface2.topleft[0] <= pygame.mouse.get_pos()[0] <= surface2.topright[0]:
if surface2.topleft[1] <= pygame.mouse.get_pos()[1] <= surface2.bottomleft[1]:
return
elif event.type == DRAW_TEXT_EVENT:
pygame.draw.rect(screen, (130, 130, 130), (235, 150, 283, 35))
pygame.time.set_timer(DRAW_TEXT_EVENT, 0) # Disable the event.
pygame.time.set_timer(CLEAR_TEXT_EVENT, 1000) # Post event after 1000ms.
elif event.type == CLEAR_TEXT_EVENT:
text1pos.x = 235
text1pos.y = 150
screen.blit(text1, text1pos)
pygame.time.set_timer(CLEAR_TEXT_EVENT, 0) # Disable the event.
pygame.time.set_timer(DRAW_TEXT_EVENT, 500) # Post event after 500ms.
# Only call once each frame!
pygame.display.flip()
if __name__ == '__main__':
main()