【Pygame 第5课】 游戏中的运动

Phoestia

改了下子弹的X坐标，变成散弹了

1. # -*- coding: utf-8 -*-
   
2. import pygame
   
3. from sys import exit
   
4. pygame.init()
   
5. screen = pygame.display.set_mode((450, 800), 0, 32)
   
6. pygame.display.set_caption("Hello, World!")
   
7. background = pygame.image.load('back.jpg').convert()
   
8. plane = pygame.image.load('plane.png').convert_alpha()
   
9. bullet=pygame.image.load('bullet.png').convert_alpha()
   
10. bullet1=bullet
    
11. bullet2=bullet
    
12. bullet_x=0
    
13. bullet_y=-1
    
14. bullet1_x=0
    
15. bullet1_y=0
    
16. bullet2_x=0
    
17. bullet2_y=0
    
18. while True:
    
19.     for event in pygame.event.get():
    
20.         if event.type == pygame.QUIT:
    
21.             pygame.quit()
    
22.             exit()
    
23.     screen.blit(background, (0,0))
    
24.     x, y = pygame.mouse.get_pos()
    
25.     if bullet_y<0:
    
26.         bullet_x=x-bullet.get_width()/2
    
27.         bullet_y=y-bullet.get_height()/2
    
28.         bullet1_x=x-bullet.get_width()/2-23
    
29.         bullet1_y=y-bullet.get_height()/2
    
30.         bullet2_x=x-bullet.get_width()/2+23
    
31.         bullet2_y=y-bullet.get_height()/2
    
32.     else:
    
33.         bullet_y-=2
    
34.         bullet1_y-=2
    
35.         bullet1_x-=0.5
    
36.         bullet2_y-=2
    
37.         bullet2_x+=0.5
    
38.     screen.blit(bullet,(bullet_x,bullet_y))
    
39.     screen.blit(bullet1,(bullet1_x,bullet1_y))
    
40.     screen.blit(bullet2,(bullet2_x,bullet2_y))
    
41.     x-= plane.get_width() / 2
    
42.     y-= plane.get_height() / 2
    
43.     #print (x,y,bullet_x,bullet_y)
    
44.     screen.blit(plane, (x,y))
    
45.     pygame.display.update()
    

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