角色只在鼠标在屏幕上移动时保持移动？

Question

我的while循环只在光标在屏幕内移动时保持精灵的移动。我试着重组一些屏幕.blits以及显示.更新（）和显示.flip(). 我似乎不明白为什么角色在一个像素的变化后停止，而不是像我想要的那样继续。在

    background_image = 'Terrain_Grass_First.png'
    import pygame, sys
    from pygame.locals import *
    pygame.init()
    pygame.display.set_caption('Hans')
    screen_width = 600
    screen_height = 400
    screen = pygame.display.set_mode((screen_width, screen_height),0,32)
    pygame.mouse.set_visible(False)
    sprite = pygame.image.load('Hans_front_still.png').convert_alpha()
    x,y = (0,0)
    movex, movey = (0,0)
    while True:
        for event in pygame.event.get():
                if event.type == QUIT:
                        pygame.quit()
                        sys.exit()

                if event.type == KEYDOWN:
                        if event.key == K_ESCAPE:
                                pygame.quit()
                                sys.exit()
                        if event.key == K_w:
                                y = -1

                        elif event.key == K_a:
                                x = -1

                        elif event.key == K_s:
                                y = +1

                        elif event.key == K_d:
                                x = +1

                elif event.type == KEYUP:
                        if event.key == K_w:
                                y = 0

                        elif event.key == K_a:
                                x = 0

                        elif event.key == K_s:
                                y = 0

                        elif event.key == K_d:
                                x = 0
                movex += x
                movey += y


        screen.fill((0,0,0))
        screen.blit(sprite,(movex,movey))
        pygame.display.flip()

Answer 1

唯一的问题是你的压痕！在

底部的第五行和第六行缩进错误，需要删除它们。在

These two lines:
            movex += x
            movey += y

should be:
        movex += x
        movey += y

而且很管用