python - 如何解决运行程序时出现黑屏的问题

Question

我是 Python 游戏开发新手，我正在尝试按照 FreeCodeCamp 上的 Youtube 教程进行学习，但没有获得预期的输出。当我运行该程序时，窗口打开，但显示黑屏，没有输出。

尝试包含 pygame.init() 和 pygame.display.init() 但这也不起作用。

import pygame

width = 500
height = 500
win = pygame.display.set_mode((width, height))
pygame.display.set_caption("Client")

client_number = 0

class Player():

    def __init__(self, x, y, width, height, color):
        self.x = x
        self.y = y
        self.height = height
        self.width = width
        self.color = color
        self.rect = (x, y, width, height)
        self.vel = 3

    def draw(self, win):
        pygame.draw.rect(win, self.color, self.rect)

    def move(self):
        keys = pygame.key.get_pressed()

        if keys[pygame.K_LEFT]:
            self.x -= self.vel

        if keys[pygame.K_RIGHT]:
            self.x += self.vel

        if keys[pygame.K_DOWN]:
            self.y += self.vel

        if keys[pygame.K_UP]:
            self.y -= self.vel

        self.rect = (self.x, self.y, self.width, self.height)


def redraw_Window(win, player):

    win.fill((255, 255, 255))
    player.draw(win)
    pygame.display.update()


def main():

    run = True
    p = Player(50, 50, 100, 100, (0, 255, 0))
    clock = pygame.time.Clock()
    while run:
        clock.tick(60)
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                run = False
                pygame.quit()
    p.move()
    redraw_Window(win, p)


main()

Answer 1

你必须尊重 Indentation .
p.move() 和 redraw_Window(win, p) 必须位于主循环的范围内(在 while run: 的范围内) ) 而不是在函数 main main 的范围内:

def main():

    run = True
    p = Player(50, 50, 100, 100, (0, 255, 0))
    clock = pygame.time.Clock()
    while run:
        clock.tick(60)
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                run = False
                pygame.quit()

        # ->>>
        p.move()
        redraw_Window(win, p)

main()