我的pygame程序运行竟然是这样子的！

我的pygame程序运行竟然是这样子的！
我用的是python 3.7.8，这是我在pycharm里面写的代码。

import pygame
import time

# 初始化Pygame
pygame.init()

# 设置窗口大小
size = (700, 500)
screen = pygame.display.set_mode(size)

# 设置窗口标题
pygame.display.set_caption("My Game")

# 创建精灵
class MySprite(pygame.sprite.Sprite):
    def __init__(self):
        super().__init__()
        self.image = pygame.Surface([50, 50])
        self.image.fill((255, 0, 0))
        self.rect = self.image.get_rect()
        self.rect.x = 50
        self.rect.y = 450
class MySprite2(pygame.sprite.Sprite):
    def __init__(self):
        super().__init__()
        self.image = pygame.Surface([25, 25])
        self.image.fill((255, 0, 0))
        self.rect = self.image.get_rect()
        self.rect.x = 50
        self.rect.y = 450

class plane(pygame.sprite.Sprite):
    def __init__(self):
        super().__init__()
        self.image = pygame.Surface([50, 50])
        self.image.fill((255, 0, 0))
        self.rect = self.image.get_rect()
        self.rect.x = 50
        self.rect.y = 0
class plane2(pygame.sprite.Sprite):
    def __init__(self):
        super().__init__()
        self.image = pygame.Surface([25, 25])
        self.image.fill((255, 0, 0))
        self.rect = self.image.get_rect()
        self.rect.x = 50
        self.rect.y = 0
# 添加精灵到组中
my_group = pygame.sprite.Group()
my_group2 = pygame.sprite.Group()
my_sprite = MySprite()
my_group.add(my_sprite)
my_sprite2 = MySprite2()
my_group.add(my_sprite2)
p = plane()
my_group2.add(p)
p2 = plane2()
my_group2.add(p2)

# 创建时钟对象
clock = pygame.time.Clock()

# 游戏循环
done = False
while not done:
    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            done = True
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                my_sprite.rect.x -= 10
                my_sprite2.rect.x -= 10
            elif event.key == pygame.K_RIGHT:
                my_sprite.rect.x += 10
                my_sprite2.rect.x += 10
            elif event.key == pygame.K_A:
                p.rect.x -= 10
                p2.rect.x -= 10
                my_group2.draw(screen)
            elif event.key == pygame.K_d:
                p.rect.x += 10
                p2.rect.x += 10
                my_group2.draw(screen)
        elif event.type == pygame.MOUSEBUTTONDOWN:
            for i in range(45):
                screen.fill((255, 255, 255))
                my_sprite2.rect.y -= 10
                my_group.draw(screen)
                my_group2.draw(screen)
                pygame.display.update()
                time.sleep(0.00000005)
                if event.type == pygame.QUIT:
                    done = True
                elif event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_LEFT:
                        my_sprite.rect.x -= 10
                    elif event.key == pygame.K_RIGHT:
                        my_sprite.rect.x += 10
            collision_list = pygame.sprite.spritecollide(my_sprite2,my_group2,True)
            clock.tick(60)

    # 绘制背景
    screen.fill((255, 255, 255))

    # 绘制精灵
    my_group.draw(screen)
    my_group2.draw(screen)

    # 更新窗口
    pygame.display.update()

    # 控制游戏帧率
    clock.tick(60)

# 退出Pygame
pygame.quit()