save project

my_music.py → lesson5-diy4.py

 import pygame
 from pygame import locals
+import os
 
 pygame.init()  # 初始化
 # 创建窗口
@@ -11,8 +12,16 @@ stop_img = pygame.image.load('stop.png')  # 暂停按钮
 last_img = pygame.image.load('last.png')  # 上一曲按钮
 next_img = pygame.image.load('next.png')  # 下一曲按钮
 logo_img = pygame.image.load('logo.png')  # 下一曲按钮
-num= -1   
-music_list=['歌曲1.wav','歌曲2.wav','歌曲3.wav','歌曲4.ogg ']
+
+# 音乐
+music_list = []
+path = "C:\\Users\\bellcode\\Desktop\\test"
+filelist = os.listdir(path)
+for i in filelist:
+    if i[-4:] == ".ogg" or i[-4:] == ".wav":
+        music_list.append(i)
+
+num = -1    
 volume = 0.2
 pygame.mixer.music.set_volume(volume)  # 初始播放音量
 click = 0
@@ -35,12 +44,10 @@ while True:
                     volume = 0
                 pygame.mixer.music.set_volume(volume)
 
-        # 按下鼠标
         if event.type == locals.MOUSEBUTTONDOWN:
-            if event.button == 1:
-                x,y = event.pos
-                if x > 270 and x <370 and y > 350 and y < 450:
-                # 次数增加
+            if event.button == 1:  # 左击
+                x, y = event.pos
+                if x > 270 and x < 370 and y > 350 and y < 450:
                     click += 1
                     if click % 2 == 0:
                         play_button = stop_img
@@ -48,15 +55,23 @@ while True:
                     else:
                         play_button = play_img
                         pygame.mixer.music.pause()
+                if x > 120 and x < 220 and y > 350 and y < 400: #上一曲
+                    num -= 1
+                    if num < 0:
+                        num = len(music_list) - 1
+                    pygame.mixer.music.load(path +"\\" +music_list[num])
+                    pygame.mixer.music.play()
+                    play_button = stop_img
+                    click = 0
 
     if pygame.mixer.music.get_busy() == False:
-        num+=1
-        if num >len(music_list)-1:
-            num=0
-        pygame.mixer.music.load(music_list[num])
+        num += 1
+        if num > len(filelist)-1:
+            num = 0
+        print(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