Pygam Lesson 5 - Homemade Music Player

Foreword: We have learned a lot of knowledge points in the first few lessons, welcome everyone to go to archaeology

Today we will learn to load music and make a music player. The interface functions include:

• Load background cover
• previous song
• start\pause
• next song
• replay
• Shuffle Playback
• fast forward

Effect display (GIF so you can't hear the sound)

analyze

• load music

pygame.mixer.music.load(song) # 加载音乐
pygame.mixer.music.set_volume(0.5) # 设置播放器音量，参数：0-1,切记写小一点，以免声音过大

• play

'''
第一个参数1指播放一次，0指循环播放
time:指从第几毫秒开始播放
 pygame.mixer.music.play(1, time)
'''
pygame.mixer.music.play() # 播放

• pause

pygame.mixer.music.pause()

• resume playback

pygame.mixer.music.unpause()

• fast forward

'''
第一个参数1指播放一次，0指循环播放
time:指从第几毫秒开始播放
 pygame.mixer.music.play(1, time)
'''
 pygame.mixer.music.play(1, time)

• Shuffle Playback

  • randon.randint(number of music)

Matters needing attention and solutions

• 1. Start at the same position as the icon of the tentative button, set the variable to switch back and forth

• 2. The first song is currently playing, click the previous one to switch to the last song; play to the last song, click the next one, it should switch to the first song

• 3. Every time a music is played, it should automatically jump to the next one

Material acquisition (function icon, music cover, music can only be downloaded by yourself): click me

Directory Structure

file\folder name	effect
image2	Image storage of function icons on the player interface
music	store music
the cover	Store Music Covers

Full version code:

import os

import pygame, random, sys, time

pygame.init()
# 创建窗口
sc = pygame.display.set_mode((300, 250))
# 载入图片
bg = pygame.image.load("image2/bg.png")  # 背景
pre_song = pygame.image.load("image2/上一首.png")  # 上一曲
start = pygame.image.load("image2/播放.png")  # 播放
pause = pygame.image.load("image2/暂停.png")  # 暂停
next_song = pygame.image.load("image2/下一首.png")  # 下一曲
ff = pygame.image.load("image2/快进.png")  # 快进
res = pygame.image.load("image2/重播.png")  # 重播
rand = pygame.image.load("image2/随机播放.png")  # 随机
# 加载音乐播放图片
bg_list = os.listdir("./封面/")

bg_list1 = []
for bg in bg_list:
    bg_list1.append(pygame.image.load("./封面/"+bg))

# 初始按钮为“开始”状态
btn = start
# 设置btn_flag，控制暂停/开始按钮的形态
btn_flag = 0
# 9把歌曲名字保存在列表,客户端加密后的名字很长，最好把每首歌名换行并对齐，方便查阅
song_list = ['./music/'+i for i in os.listdir('./music/')]

# 载入音乐
index = 0
song = song_list[index]
pygame.mixer.music.load(song)
# 控制音量，取值范围为0-1.0的浮点数。0为最小值，1为最大值。
pygame.mixer.music.set_volume(0.5)
# 播放第一首音乐，此处提醒学生，调小电脑音量，防止声音突然太大伤害听力
pygame.mixer.music.play()
time = 0
print(time)
length = len(song_list)
while True:  # 加上循环，引出事件

    # 如果是偶数，按钮切换为“start”，如果时奇数，切换为“stop”。
    if btn_flag % 2 == 0:
        btn = start
        # 音乐的暂停
        pygame.mixer.music.pause()
    else:
        btn = pause
        # 音乐的开始
        pygame.mixer.music.unpause()
    # 绘制背景,按钮
    sc.blit(bg_list1[index],(0,0)) # 绘制当前播放音乐的背景图片
    sc.blit(pre_song, (20, 90))
    sc.blit(next_song, (210, 90))
    sc.blit(rand, (115, 170))
    sc.blit(btn, (115, 90))
    sc.blit(ff, (210, 170))
    sc.blit(res, (20, 170))
    pygame.display.update()
    # 获取事件列表
    for event in pygame.event.get():
        mouse_x, mouse_y = pygame.mouse.get_pos()
        if event.type == pygame.QUIT:
            pygame.quit()  # 退出窗口
            sys.exit()  # 退出程序
        if event.type == pygame.MOUSEBUTTONDOWN:
            # 点击了暂停按键后的效果
            if 115 < mouse_x < 185 and 90 < mouse_y < 160:
                btn_flag += 1
            # 1. 点击下一曲按钮，切换为下一首音乐
            if 210 < mouse_x < 280 and 90 < mouse_y < 160:
                # index+=1 #简单尝试，多点几次下一曲，发现列表索引超限。
                index = (index + 1) % len(song_list)  # 实现音乐的轮播
                song = song_list[index]
                pygame.mixer.music.load(song)
                pygame.mixer.music.play(1, 0)
            # 1. 点击上一曲按钮，切换为上一首音乐
            if 20 < mouse_x < 90 and 90 < mouse_y < 160:
                # index+=1 #简单尝试，多点几次下一曲，发现列表索引超限。

                index = (index + length - 1) % length  # 实现音乐的轮播
                song = song_list[index]
                pygame.mixer.music.load(song)
                pygame.mixer.music.play(1, 0)
            # 2. 点击了快进后的效果
            elif 210 < mouse_x < 280 and 170 < mouse_y < 240:
                # 获取播放时间并转换成秒为单位
                # 时间自加
                time += 10
                print(time)
                pygame.mixer.music.play(1, time)
                print(time)
                # 知识进阶
                if pygame.mixer.music.get_busy() == False:
                    # 获取新的下标
                    index = (index + 1) % length
                    # 播放新的音乐
                    song = song_list[index]
                    pygame.mixer.music.load(song)
                    pygame.mixer.music.play()

            # 3. 点击了重新播放后的效果
            elif 20 < mouse_x < 90 and 170 < mouse_y < 240:
                time = 0
                pygame.mixer.music.play(1, time)

            # 4. 点击了随机后的效果
            elif 115 < mouse_x < 185 and 170 < mouse_y < 240:
                # 获取新的下标
                index = random.randint(0, 3)
                # 播放新的音乐
                song = song_list[index]
                pygame.mixer.music.load(song)
                pygame.mixer.music.play()

I hope everyone has to help

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