save project

my_music.py

@@ -51,6 +51,14 @@ while True:
                     else:
                     else:
                         play_button = play_img
                         play_button = play_img
                         pygame.mixer.music.pause()
                         pygame.mixer.music.pause()
+                if x>120 and x<220 and y>350 and y<400:
+                    num -= 1
+                    if num < 0:
+                        num = len(filelist) - 1
+                    pygame.mixer.music.load(filelist[num])
+                    pygame.mixer.music.play()
+                    click = 0
+                    play_button = stop_img
                         
                         
     if pygame.mixer.music.get_busy() == False:
     if pygame.mixer.music.get_busy() == False:
         num += 1
         num += 1
@@ -60,6 +68,7 @@ while True:
         pygame.mixer.music.play()
         pygame.mixer.music.play()
         
         
 
 
+
     # 绘制画面
     # 绘制画面
     screen.blit(bg_img, (0, 0))      # 填充背景
     screen.blit(bg_img, (0, 0))      # 填充背景
     screen.blit(play_button, (270, 330))   # 暂停按钮
     screen.blit(play_button, (270, 330))   # 暂停按钮