用python做一个简单的pong游戏

import  pygame
pygame.init()
screen = pygame.display.set_mode([800,600])

pygame.display.set_caption("pong")
keep_going = True
image = pygame.image.load(".\2.bmp")
# print(type(image))
scale = 100
pic=pygame.transform.scale(image,(scale,scale))
# print(type(pic))
colorkey = pic.get_at((0,0))
pic.set_colorkey(colorkey)#设置游戏界面，加载小球图片，设置颜色键

picx = 0
picy = 0
timer = pygame.time.Clock()
speedX = 5
speedY = 5
paddleW = 200
paddleH = 25
paddleX = 300
paddleY = 550
picW = 100
picH = 100
points = 0
lives = 5
white = (255,255,255)
font = pygame.font.SysFont("C:\\Windows\Fonts\\Corbel",24,False,False)#初始化参数

pygame.mixer.init()
pop = pygame.mixer.music
pop.load(".\w.mp3")#加载声音

pop.play()

while keep_going:#while的重复绘图制作出动画的效果
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            keep_going = False
        if event.type == pygame.KEYDOWN:#注意注意注意
            if event.key ==pygame.K_F1:#F1键复位
                points = 0
                lives = 5
                picx = 0
                picy = 0
                speedX = 5
                speedY = 5
    picx+=speedX
    picy+=speedY

    if picx<=0 or picx+pic.get_width()>=800:#值得注意的是游戏界面的坐标是以左上角为原点，
                                            #向右为x正半轴，向下为y正半轴
        speedX=-speedX*1.1
    if picy<=0:
        speedY = -speedY+1
    if picy >=500:
        lives-=1
        # speedY = -speedY
        speedY = -5
        speedX = 5
        picy = 499
    screen.fill((0,0,0))
    screen.blit(pic,(picx,picy))#以上是小球与游戏界面边界碰撞的逻辑


    paddleX = pygame.mouse.get_pos()[0]
    paddleX-= paddleW/2
    pygame.draw.rect(screen,white,(paddleX,paddleY,paddleW,paddleH))


    if picy+picH>= paddleY and picy +picH<=paddleY+paddleH and speedY>0:#没有触底并且速度为正
        if picx +picW/2>=paddleX and picx+picW/2<=paddleX+paddleW:
            points+=1
            speedY = -speedY#与挡板碰撞的逻辑


    draw_string = "lives:"+str(lives)+"Points:"+str(points)

    if lives<1:
        speedY = speedX = 0
        draw_string = "game over! your scores is"+str(points)#游戏结束判断

    text = font.render(draw_string,True,white)
    text_rect = text.get_rect()
    text_rect.centerx = screen.get_rect().centerx
    text_rect.y = 10
    screen.blit(text,text_rect)
    pygame.display.update()
    timer.tick(60)

pygame.quit()