save project

diy

@@ -13,6 +13,17 @@ while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:                           
             exit()
+        if event.type == locals.KEYDOWN:
+            if event.key == locals.K_UP:
+                volume += 0.1
+                if volume > 1:
+                    volume = 1
+                pygame.mixer.set_ volume(volume)  
+            if event.key == locals.K_DOWN:
+                volume -= 0.1
+                if volume < 0:
+                    volume = 0
+                pygame.mixer.set_ volume(volume) 
     if pygame.mixer.music.get_busy():==False
         pygame.mixer.music.play()
     # 绘制画面