Question

我在Python 3（和pygame）中有以下代码，但白色表面无法显示，我不明白为什么。它与它的位置有关吗？我试过去缩进，但这也不起作用？代码如下：

import pygame
from pygame.locals import*
pygame.init()

screen=pygame.display.set_mode((800,600))


# Variable to keep our main loop running
running = True

# Our main loop!
while running:
    # for loop through the event queue
    for event in pygame.event.get():
        # Check for KEYDOWN event; KEYDOWN is a constant defined in pygame.locals, which we imported earlier
        if event.type == KEYDOWN:
            # If the Esc key has been pressed set running to false to exit the main loop
            if event.key == K_ESCAPE:
                running = False
            # Check for QUIT event; if QUIT, set running to false
            elif event.type == QUIT:
                running = False

            # Create the surface and pass in a tuple with its length and width
            surf = pygame.Surface((50, 50))
            # Give the surface a color to differentiate it from the background
            surf.fill((255, 255, 255))
            rect = surf.get_rect()

            screen.blit(surf, (400, 300))
            pygame.display.flip()

Answer 1

所以看来你的缩进是错误的。

您需要在事件循环之外定义曲面并更新屏幕等。

至少，您必须将screen.blit(surf, (400, 300))和pygame.display.flip()移到事件循环之外。

这是固定的：

# Our main loop!
while running:
    # for loop through the event queue
    for event in pygame.event.get():
        # Check for KEYDOWN event; KEYDOWN is a constant defined in pygame.locals, which we imported earlier
        if event.type == KEYDOWN:
            # If the Esc key has been pressed set running to false to exit the main loop
            if event.key == K_ESCAPE:
                running = False
            # Check for QUIT event; if QUIT, set running to false
            elif event.type == QUIT:
                running = False

    # Create the surface and pass in a tuple with its length and width
    surf = pygame.Surface((50, 50))
    # Give the surface a color to differentiate it from the background
    surf.fill((255, 255, 255))
    rect = surf.get_rect()

    screen.blit(surf, (400, 300))
    pygame.display.flip()

pygame屏幕无法显示

1 个答案: