pygame没报错却黑屏，音乐都有

曲速飞跃

1. import pygame
   
2. import sys
   
3. import traceback
   
4. from pygame.locals import *
   
5. from random import *
   
6. 
   
7. # 球类继承自Spirte类
   
8. class Ball(pygame.sprite.Sprite):
   
9.     def __init__(self, grayball_image,  position, speed, bg_size):
   
10.         # 初始化动画精灵
    
11.         pygame.sprite.Sprite.__init__(self)
    
12. 
    
13.         self.grayball_image = pygame.image.load(grayball_image).convert_alpha()
    
14.         self.rect = self.grayball_image.get_rect()
    
15.         # 将小球放在指定位置
    
16.         self.rect.left, self.rect.top = position
    
17.         self.side = [choice([-1, 1]), choice([-1, 1])]
    
18.         self.speed = speed
    
19.         self.collide = False
    
20.         self.control = False
    
21.         self.width, self.height = bg_size[0], bg_size[1]
    
22.         self.radius = self.rect.width / 2
    
23. 
    
24.     def move(self):
    
25.         if self.control:
    
26.             self.rect = self.rect.move(self.speed)
    
27.         else:
    
28.             self.rect = self.rect.move((self.side[0] * self.speed[0], \
    
29.                                         self.side[1] * self.speed[1]))
    
30. 
    
31.         # 如果小球的左侧出了边界，那么将小球左侧的位置改为右侧的边界
    
32.         # 这样便实现了从左边进入，右边出来的效果
    
33.         if self.rect.right <= 0:
    
34.             self.rect.left = self.width
    
35. 
    
36.         elif self.rect.left >= self.width:
    
37.             self.rect.right = 0
    
38. 
    
39.         elif self.rect.bottom <= 0:
    
40.             self.rect.top = self.height
    
41. 
    
42.         elif self.rect.top >= self.height:
    
43.             self.rect.bottom = 0
    
44.         
    
45. def main():
    
46.     pygame.init()
    
47. 
    
48.     grayball_image = "UFO.jpg"
    
49.     bg_image = "background.jpg"
    
50. 
    
51.     running = True
    
52. 
    
53.     # 添加背景音乐
    
54.     pygame.mixer.music.load("music.ogg")
    
55.     pygame.mixer.music.play()
    
56. 
    
57.     # 添加音效
    
58.     loser_sound = pygame.mixer.Sound("fail.ogg")
    
59.     laugh_sound = pygame.mixer.Sound("laugh.ogg")
    
60.     winner_sound = pygame.mixer.Sound("win.ogg")
    
61. 
    
62.     # 根据背景图片指定游戏界面尺寸
    
63.     bg_size = width, height = 1200,800
    
64.     screen = pygame.display.set_mode(bg_size)
    
65.     pygame.display.set_caption("Play the ball - FishC Demo")
    
66. 
    
67.     background = pygame.image.load(bg_image).convert_alpha()
    
68. 
    
69.     # 用来存放小球对象的列表
    
70.     balls = []
    
71.     group = pygame.sprite.Group()
    
72. 
    
73.     # 创建 5 个小球
    
74.     for i in range(5):
    
75.         # 位置随机，速度随机
    
76.         position = randint(0, width-100), randint(0, height-100)
    
77.         speed = [randint(1, 10), randint(1, 10)]
    
78.         ball = Ball(grayball_image, position, speed, bg_size)
    
79.         # 检测新诞生的球是否会卡住其他球
    
80.         while pygame.sprite.spritecollide(ball, group, False, pygame.sprite.collide_circle):
    
81.             ball.rect.left, ball.rect.top = randint(0, width-100), randint(0, height-100)
    
82.         balls.append(ball)
    
83.         group.add(ball)
    
84. 
    
85. 
    
86. if __name__ == "__main__":
    
87.     try:
    
88.         main()
    
89.     except SystemExit:
    
90.         pass
    
91.     except:
    
92.         traceback.print_exc()
    
93.         pygame.quit()
    
94.         input()
    
95.    
    

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