Python中实现乒乓球效果

Python既有脚本语言的灵活性，又有丰富的类库与面向对象的特点，开发起来很方便,

　　游戏的规则和乒乓球一样，如果妙蛙种子掉地上了就算输，你可以用蓝色的跷跷板弹它，使他不落到地面上，Game Over后可按任意键继续游戏或选择退出；

　　把下面这段代码贴到你的IDLE中，找到下面这两行替换成你机器中的图片路径，按F5就可以运行了。

　　img_player = "C:\Users\dswu\Desktop\player.png"

　　img_ref_path = "C:\Users\dswu\Desktop\Reflector.png"

 代码如下：

import sys, pygame 
from random import * 
from pygame.locals import * 
from pygame.font import * 

class MyPlayer(pygame.sprite.Sprite): 

    def __init__(self, image_file, location, speed): 
        pygame.sprite.Sprite.__init__(self) 
        self.image = pygame.image.load(image_file) 
        self.rect = self.image.get_rect() 
        self.rect.left, self.rect.top = location 
        self.speed = speed 
        self.status = True 

    def move(self): 
        self.rect = self.rect.move(self.speed) 
        if self.rect.left < 0 or self.rect.right >  
            self.speed[0] = -self.speed[0] 
        if self.rect.top < 0:  
            self.speed[1] = -self.speed[1] 
        if self.rect.bottom > height: 
            #Game over 
            self.status = False 

class Reflector(pygame.sprite.Sprite): 

    def __init__(self, image_file, location, speed): 
        pygame.sprite.Sprite.__init__(self) 
        self.image = pygame.image.load(image_file) 
        self.rect = self.image.get_rect() 
        self.rect.left, self.rect.top = location 
        self.speed = speed 

    def move(self): 
        self.rect = self.rect.move(self.speed) 
        if self.rect.left < 0 or self.rect.right >  
            self.speed[0] = -self.speed[0] 
        if self.rect.top < 0 or self.rect.bottom > height: 
            self.speed[1] = -self.speed[1] 

def animate(players): 
    screen.fill([255,255,255]) 
    for player in players: 
        player.move() 
    for player in players:     
        players.remove(player) 
        if pygame.sprite.spritecollide(player,players,False): 
            player.speed[0] = -player.speed[0] 
            player.speed[1] = -player.speed[1] 
        players.add(player) 
        player.move() 
        screen.blit(player.image,player.rect) 
    pygame.display.flip() 
    pygame.time.delay(10) 
 
pygame.init() 
size = width,height = 640,480 
screen = pygame.display.set_mode(size) 
screen.fill([255,255,255]) 
pygame.display.set_caption("MiaoWa Game") 

def play(): 
    img_player = "C:\Users\dswu\Desktop\player.png" 
    players = pygame.sprite.Group() 
    for row in range(0,1): 
        for column in range(0,1): 
            playerLocation = [column*250+10,row*250+10] 
            playerSpeed = [choice([-2,2]), choice([-2,2])] 
            player = MyPlayer(img_player, playerLocation, playerSpeed) 
            players.add(player) 
    img_ref_path = "C:\Users\dswu\Desktop\Reflector.png" 
    ref_pos = [0,464] 
    ref_speed = [0,0] 
    reflector = Reflector(img_ref_path, ref_pos, ref_speed) 
    players.add(reflector) 
    running = True 
    while running: 
        key_pressed = pygame.key.get_pressed() 
        for event in pygame.event.get(): 
            if event.type == pygame.QUIT: 
                game.quit() 
            if event.type == KEYDOWN: 
                if event.key == K_LEFT:   
                    ref_speed[0] = -2 
                elif event.key == K_RIGHT: 
                    ref_speed[0] = +2 
        animate(players) 
        if player.status == False: 
            running = False 
    final_text = "Game Over!" 
    ft_font = pygame.font.Font(None, 100) 
    ft_surf = ft_font.render(final_text, 1, (0,0,0)) 
    screen.blit(ft_surf, [screen.get_width()/2 - ft_surf.get_width()/2, 100]) 
    tip_text = "Type any key to continue" 
    tip_font = pygame.font.Font(None, 50) 
    tip_surf = tip_font.render(tip_text, 1, (0,0,0)) 
    screen.blit(tip_surf, [screen.get_width()/2 - tip_surf.get_width()/2, 200]) 
    pygame.display.flip() 
    keepOn = True 
    while keepOn: 
        key_pressed = pygame.key.get_pressed() 
        for event in pygame.event.get(): 
            if event.type == pygame.QUIT: 
                pygame.quit() 
            if event.type == KEYDOWN: 
                play() 
play()

　　主要是通过pygame.sprite.Sprite类实现碰撞的监控，通过事件的捕捉及判断实现这种弹力球类的游戏，其中涉及到文字在界面上的显示，游戏中的循环控制，以及重新开始游戏等。

　　代码运行一下应该就差不多明白了，如果有不明白的地方请给我留言，方便一起学习与进步。