如何使用 Threading 同时运行 discord 客户端和 pygame？

Question

我正在尝试让我的代码使用 discord api 从 discord 获取消息，并使用 pygame 将其放在黑屏上，并在中心显示该消息。get_message() 和 main_window() 函数都单独工作，但是当我将它与 Threading 放在一起时，get_message() 似乎不起作用。我的代码import discordimport pygamefrom threading import Threadclient = discord.Client()new_message = "Potato"pygame.font.init()font = pygame.font.Font(None, 45)color = (255, 255, 255)txt = font.render(new_message, True, color)def main():    t1 = Thread(target=main_window())    t3 = Thread(target=get_message())    t3.start()    t1.start()def main_window():    global new_message    info = pygame.display.Info()    screen = pygame.display.set_mode((info.current_w, info.current_h), pygame.FULLSCREEN)    screen_rect = screen.get_rect()    clock = pygame.time.Clock()    done = False    while not done:        for event in pygame.event.get():            if event.type == pygame.KEYDOWN:                if event.key == pygame.K_ESCAPE:                    done = Truescreen.fill((30, 30, 30))screen.blit(txt, txt.get_rect(center=screen_rect.center))pygame.display.flip()clock.tick(30)def get_message():    @client.event    async def on_ready():        print('We have logged in as {0.user}'.format(client))    @client.event    async def on_message(message):       if message.author == client.user or message.author.id == MY_USER_ID:           return       if message.channel.id == MY_CHANNEL_ID:           if message.content != " ":               global new_message               global txt               new_message = message.content               txt = font.render(new_message, True, color)    client.run("MY_ACCESS_KEY")if name == 'main':    pygame.init()    main()我是 Python 的新手，所以如果您有任何清理或建议，我将不胜感激！谢谢！

Answer 1

可能是在单独的线程中呈现文本导致了问题。根据 pygame font render()文档，该方法不是线程安全的。

font.render()我通过将调用和与 pygame 有关的所有内容移动到函数中来修改您的代码main_window()。在 pygame 事件循环的每次传递中，它检查全局是否new_message已更改并呈现文本（如果已更改）。

编辑： 我刚刚注意到，当您创建线程时，您指定的函数不正确。它应该是Thread(target=myFunc)（对函数的引用）而不是Thread(target=myFunc())（调用函数并传递结果）。

import discord

import pygame

from threading import Thread

client = discord.Client()

new_message = "Potato"

color = (255, 255, 255)

def main():

    t1 = Thread(target=main_window) # no parentheses on function

    t3 = Thread(target=get_message)

    t1.start()

    t3.start()

def main_window():

    pygame.init()

    pygame.font.init()

    font = pygame.font.Font(None, 45)

    info = pygame.display.Info()

    screen = pygame.display.set_mode((info.current_w, info.current_h), pygame.FULLSCREEN)

    screen_rect = screen.get_rect()

    clock = pygame.time.Clock()

    last_message = new_message # inital message

    txt = font.render(new_message, True, color) # renter initial text

    done = False

    while not done:

        for event in pygame.event.get():

            if event.type == pygame.KEYDOWN:

                if event.key == pygame.K_ESCAPE:

                    done = True

        if new_message != last_message: # message was changed by other thread

            last_message = new_message

            txt = font.render(new_message, True, color) # re-render text

        screen.fill((30, 30, 30))

        screen.blit(txt, txt.get_rect(center=screen_rect.center))

        pygame.display.flip()

        clock.tick(30)

def get_message():

    @client.event

    async def on_ready():

        print('We have logged in as {0.user}'.format(client))

    @client.event

    async def on_message(message):

        if message.author == client.user or message.author.id == MY_USER_ID:

            return

        if message.channel.id == MY_CHANNEL_ID:

            if message.content != " ":

                global new_message

                new_message = message.content

        client.run("MY_ACCESS_KEY")

if name == 'main':

    main()