Python -- 游戏开发 -- PyGame的使用

弹球

pong.py

 import sys
 import pygame
 from pygame.locals import *

 class MyBallClass(pygame.sprite.Sprite):
     def __init__(self, img_file, location, speed):
         pygame.sprite.Sprite.__init__(self)
         self.image = pygame.image.load(img_file)
         self.rect = self.image.get_rect()
         self.rect.left, self.rect.top = location
         self.speed = speed
     def move(self):
         global points
         self.rect = self.rect.move(self.speed)
         if self.rect.left<0 or self.rect.right>screen.get_width():
             self.speed[0] *= -1
             if self.rect.bottom <= paddle.rect.top+1:
                 points += 1
                 ball_bounce.play()
         if self.rect.top <= 0:
             self.speed[1] *= -1
             points += 1
             ball_bounce.play()
 class MyPaddleClass(pygame.sprite.Sprite):
     def __init__(self, img_file, location):
         pygame.sprite.Sprite.__init__(self)
         self.image = pygame.image.load(img_file)
         self.rect = self.image.get_rect()
         self.rect.left, self.rect.top = location

 pygame.init()
 pygame.mixer.init()
 splat = pygame.mixer.Sound("audio\\ball_bounce.wav")
 ball_bounce = pygame.mixer.Sound("audio\\balloon_pop.wav")
 screen = pygame.display.set_mode([1024, 768])
 pygame.display.set_caption('火龙果2')
 clock = pygame.time.Clock()
 ball_speed = [2, 1]
 ball_img = 'img\\dragon (1).ico'
 myBall = MyBallClass(ball_img, [50,50], ball_speed)
 ballGroup = pygame.sprite.Group(myBall)
 paddle_img = 'img\\apple2.jpg'
 paddle = MyPaddleClass(paddle_img, [400, 550])
 points = 0
 font = pygame.font.Font(None, 100)
 collide = False #是否相撞
 lives = 3
 lives_image = pygame.image.load("img\\pig.ico")
 gameover = False
 while 1:
     clock.tick(150)
     screen.fill([255, 255, 255])
     for event in pygame.event.get():
         if event.type == QUIT:
             sys.exit()
         elif event.type == MOUSEMOTION:
             paddle.rect.centerx = event.pos[0]
     if pygame.sprite.spritecollide(paddle, ballGroup, False):
         if myBall.rect.bottom <= 551:
             myBall.speed[1] = -abs(myBall.speed[1])
         if (not collide) and (myBall.rect.bottom<=paddle.rect.top+1):
             points += 1
             splat.play()
         collide = True
     else:
         collide = False

     if not gameover:
         myBall.move()
         screen.blit(myBall.image, myBall.rect)
         screen.blit(paddle.image, paddle.rect)
         score_str = 'Score:' + str(points)
         score_text = font.render(score_str, 1, (0,0,0))
         score_rect = score_text.get_bounding_rect()
         score_width = score_rect.width
         textpos = [screen.get_rect().width-score_width-10, 20]
         screen.blit(score_text, textpos)
         for i in range(lives-1):
             screen.blit(lives_image, [128*i, 0])
         pygame.display.flip()

     if myBall.rect.top >= screen.get_rect().bottom:
         lives -= 1
         if lives == 0:
             final_text1 = "Game Over"
             final_text2 = "Your final score is: " + str(points)
             font1 = pygame.font.Font(None, 70)
             surf1 = font1.render(final_text1, 1, (0,0,0))
             font2 = pygame.font.Font(None, 50)
             surf2 = font2.render(final_text2, 1, (0,0,0))
             screen.blit(surf1, [screen.get_width()/2 - surf1.get_width()/2, 200])
             screen.blit(surf2, [screen.get_width()/2 - surf2.get_width()/2, 300])
             pygame.display.flip()
             gameover = True
         else:
             pygame.time.delay(1000)
             myBall.rect.topleft = [lives*128, 0]