save project

lesson4-diy1.py

@@ -17,6 +17,14 @@ 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.music.set_volume(volume)
+            if event.key == locals.K_DOWN:
+                volume -=
     if pygame.mixer.music.get_busy() == False:
         pygame.mixer.music.play()
     # 绘制画面