save project

n.py

@@ -13,13 +13,27 @@ next_img = pygame.image.load('next.png')
 logo_img = pygame.image.load('logo.png')  
 pygame.mixer.music.load('歌曲4.ogg')
 
+volume = 0.8
+pygame.mixer.music.set_volume(volume)
+
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             exit()
-    if pygame.mixer.music.get_busy() == False:
-        pygame.mixer.music.play()
-                
+        if event.type == locals.KEYDOWN:
+            if event.key == locals.K_UP:
+                volume += 0.1
+                if volume < 0 or volume==0:
+                    volume = 0
+                pygame.mixer.music.set_volume(volume)
+            if event.key == locals.K_DOWN:
+                volume -= 0.1
+                if volume < 0 or volume==0:
+                    volume = 0
+                pygame.mixer.music.set_volume(volume)
+        if pygame.mixer.music.get_busy() == False:
+            pygame.mixer.music.play()
+
     screen.blit(bg_img, (0, 0))      
     screen.blit(stop_img, (270, 330))   
     screen.blit(logo_img, (170, 60))