save project

my_music.py

@@ -59,15 +59,29 @@ while True:
                     else:
                         play_button = play_img
                         pygame.mixer.music.pause()
-
+                if x>120 and x<220 and y>350 and y<400:
+                    num-=1
+                    if num<0:
+                        num=len(music_list)-1
+                        pygame.mixer.music.load(path+'\\'+music_list[num])
+                        pygame.mixer.music.play()
+                        click=0
+                        play_button=stop_img
+                if x>120 and x<220 and y>350 and y<400:
+                    num+=1
+                    if num>0:
+                        num=len(music_list)-1
+                        pygame.mixer.music.load(path+'\\'+music_list[num])
+                        pygame.mixer.music.play()
+                        click=0
+                        play_button=play_img    
     if pygame.mixer.music.get_busy() == False:
         
             num+=1
             if num>len(music_list)-1:
                 num=0
-                pygame.mixer.music.load(music_list+'\\'+path[num])
+                pygame.mixer.music.load(path+'\\'+music_list[num])
                 pygame.mixer.music.play()
-
     # 绘制画面
     screen.blit(bg_img, (0, 0))      # 填充背景
     screen.blit(play_button, (270, 330))   # 暂停按钮