今天我们用python和pygame实现一个乒乓球的小游戏，或者叫弹珠球游戏。
笑脸乒乓球游戏功能介绍
乒乓球游戏功能如下：
乒乓球从屏幕上方落下，用鼠标来移动球拍，使其反弹回去，并获得得分，如果没有接到该球，则失去一条命。玩家有一定数量的命如5。
游戏设计思路
根据游戏规则，我们需要
1、初始化游戏环境
2、画出乒乓球，球拍等
3、设置乒乓球的运动，并监听鼠标，以移动球拍
4、判断乒乓球被接住与否
5、游戏是否结束，是否再玩。
代码实现
import pygame
pygame.init()
screen_width=800
screen_height=600
screen=pygame.display.set_mode([screen_width,screen_height])
pygame.display.set_caption("笑脸乒乓球")
keepGoing=True
pic=pygame.image.load("CrazySmile.bmp")
colorkey = pic.get_at((0,0))
pic.set_colorkey(colorkey)
picx=0
picy=0
BLACK=(0,0,0)
WHITE=(255,255,255)
timer=pygame.time.Clock()
paddle_width=200
paddle_height=25
paddle_x=300
paddle_y=550
speedx=5
speedy=5
#图片的高度和宽度
pic_width=pic.get_width()
pic_height=pic.get_height()
#分数和命
points=0
lives=5
font=pygame.font.SysFont("Times",24)
pop = pygame.mixer.Sound("pop.wav")
while keepGoing:
for event in pygame.event.get():
if event.type==pygame.QUIT:
keepGoing=False
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_F1: # F1 = New Game
points = 0
lives = 5
picx = 0
picy = 0
speedx = 5
speedy = 5
pop.play()
picx += speedx
picy += speedy
if picx <= 0 or picx >= 700:
speedx = -speedx * 1.1
if picy <= 0:
speedy = -speedy + 1
if picy >= 500:
lives -= 1
speedy = -5
speedx = 5
picy = 499
# if picx <= 0 or picx + pic_width > screen_width:
# speedx = -speedx
# if picy <= 0:
# speedy = -speedy
# if picy >= 500:
# lives -= 1
# speedy = -speedy
screen.fill(BLACK)
screen.blit(pic, (picx, picy))
# 画出球拍
paddle_x = pygame.mouse.get_pos()[0]
paddle_x -= paddle_width / 2
pygame.draw.rect(screen, WHITE, (paddle_x, paddle_y, paddle_width, paddle_height))
#判断接住乒乓球
if picy + pic_width > paddle_y and picy + pic_height < paddle_y + paddle_height and speedy > 0:
if picx + pic_width / 2 > paddle_x and picx + pic_width / 2 < paddle_x + paddle_width:
points += 1
speedy = -speedy
# 在屏幕上画出得分
draw_string = "Lives: " + str(lives) + " Points: " + str(points)
if lives<1:
draw_string="Game Over. Your scores is "+str(points)
draw_string+="press F1 to play again"
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() 
