再写外星人入侵项目的时候发现了这个bug，找了很多帖子，也没有效果，现在改正过来了，希望有所帮助，代码如下：

class Ship(Sprite):

def __init__(self, ai_settings, screen):

"""初始化飞船并设置其初始位置"""

super(Ship, self).__init__()

self.screen = screen

self.ai_settings = ai_settings

# 加载飞船图像并获取其外接矩形

self.image = pygame.image.load('images/ship.bmp')

self.rect = self.image.get_rect()

self.screen_rect = screen.get_rect()

# 将每艘新飞船放在屏幕底部中央

self.rect.centerx = self.screen_rect.centerx

self.rect.bottom = self.screen_rect.bottom

# 在飞船的属性center中存储小数值

self.center = float(self.rect.centerx)

self.centery = float(self.rect.centery)

# 移动标志

self.moving_right = False

self.moving_left = False

self.moving_up = False

self.moving_down = False

def update(self):

"""根据移动标志调整飞船的位置"""

# 更新飞船的center值,而不是rect

if self.moving_right and self.rect.right < self.screen_rect.right:

self.center += self.ai_settings.ship_speed_factor

if self.moving_left and self.rect.left > 0:

self.center -= self.ai_settings.ship_speed_factor

if self.moving_up and self.rect.top > 0:

self.centery -= self.ai_settings.ship_speed_factor

if self.moving_down and self.rect.bottom < self.screen_rect.bottom:

self.centery += self.ai_settings.ship_speed_factor

# 根据self.center更新rect对象

self.rect.centerx = self.center

self.rect.centery = self.centery

def center_ship(self):

"""让飞船在屏幕上居中"""

self.center = self.screen_rect.centerx

self.centery = self.screen_rect.bottom

def blitme(self):

"""在指定位置绘制飞船"""

self.screen.blit(self.image, self.rect)

原文链接:https://blog.csdn.net/porlain/article/details/107941722