C++小案例之音乐播放器

#pragma once
#include<iostream>
#include<string>
#include<vector>
#include<stdio.h>
#include<stdlib.h>
#include<graphics.h>
#include<list>
#include<time.h>
#include<map>
#include<mmsystem.h>
#pragma comment(lib,"winmm.lib")
using namespace std;

#pragma once
#include "Common.h"
class Res;
class MusicPlayer
{
public:
	//枚举命令
	enum CMD
	{
		Open,Play,Pause,Resume,Close
	};
	MusicPlayer();
	void menu();//菜单
	void keydown();//按键处理
	void showMusic();
	void playMusic();
	void pauseMusic();
	void resumeMusic();//继续音乐
	void nextMusic();
	void preMusic();
	void randPlayMusic();
	void selectMusic();

protected:
	//播放音乐的序号
	int m_curIndex;
	//存储命令
	vector<string> m_cmd;
	
	Res* m_pres;


};

#pragma once
#include "Common.h"
class Res
{
public:
	Res();
	map<int, string>& res();
	void show(int curPlayIndex);
protected:
	map<int, string> m_res;
};

#include "MusicPlay.h"
#include "Res.h"
MusicPlayer::MusicPlayer() {
	m_pres = new Res;
	m_curIndex = 1;//音乐从第一首开始
	//命令存储到数组中，便于播放音乐
	m_cmd.push_back("open ");
	m_cmd.push_back("play ");
	m_cmd.push_back("pause ");
	m_cmd.push_back("resume ");
	m_cmd.push_back("close ");
}
void MusicPlayer::menu()
{
	cout << "----------[音乐播放器]------------\n"
		"\t0.退出播放器\n"
		"\t1.播放音乐\n"
		"\t2.暂停\n"
		"\t3.继续\n"
		"\t4.上一首\n"
		"\t5.下一首\n"
		"\t6.随机播放\n"
		"\t7.选择播放\n"
		"-----------------------------------\n";
}

void MusicPlayer::keydown()
{
	int userKey = 0; cout << "请输入你的选择：" << endl;
	cin >> userKey;
	switch (userKey)
	{
	case 0:
		exit(0);
		break;
	case 1:
		playMusic();
		break;
	case 2:
		pauseMusic();
		break;
	case 3:
		resumeMusic();
		break;
	case 4:
		preMusic();

		break;
	case 5:
		nextMusic();
		break;
	case 6:
		randPlayMusic();
		break;
	case 7:
		selectMusic();
		break;

	}
}

void MusicPlayer::showMusic()
{
	m_pres->show(m_curIndex);
}

void MusicPlayer::playMusic()
{
	//auto r = m_pres->res();
	//r[m_curIndex]
	string opencmd = m_cmd[CMD::Open] + m_pres->res()[m_curIndex];
	mciSendString(opencmd.c_str(), 0, 0, 0);
	string playcmd = m_cmd[CMD::Play] + m_pres->res()[m_curIndex];
	mciSendString(playcmd.c_str(), 0, 0, 0);


}

void MusicPlayer::pauseMusic()
{
	string pausecmd = m_cmd[CMD::Pause] + m_pres->res()[m_curIndex];
	mciSendString(pausecmd.c_str(), 0, 0, 0);
	
}

void MusicPlayer::resumeMusic()
{
	string resumecmd = m_cmd[CMD::Resume] + m_pres->res()[m_curIndex];
	mciSendString(resumecmd.c_str(), 0, 0, 0);
}

void MusicPlayer::nextMusic()
{
	string closecmd = m_cmd[CMD::Close] + m_pres->res()[m_curIndex];
	mciSendString(closecmd.c_str(), 0, 0, 0);
	//得到上一首的音乐信号
	m_curIndex == m_pres->res().size() ? m_curIndex = 1 : m_curIndex++;
	playMusic();
}

void MusicPlayer::preMusic()
{//关闭正在播放音乐
	string closecmd = m_cmd[CMD::Close] + m_pres->res()[m_curIndex];
	mciSendString(closecmd.c_str(), 0, 0, 0);
	//得到上一首的音乐信号
	m_curIndex == 1 ? m_curIndex = m_pres->res().size(): m_curIndex--;
	playMusic();
}

void MusicPlayer::randPlayMusic()
{
	string closecmd = m_cmd[CMD::Close] + m_pres->res()[m_curIndex];
	mciSendString(closecmd.c_str(), 0, 0, 0);
	//得到上一首的音乐信号
	m_curIndex = rand() % m_pres->res().size() + 1;
	playMusic();
}

void MusicPlayer::selectMusic()
{
	string closecmd = m_cmd[CMD::Close] + m_pres->res()[m_curIndex];
	mciSendString(closecmd.c_str(), 0, 0, 0);
	cout << "请输入播放音乐的序号";
	cin >> m_curIndex;
	
	if (m_curIndex<1 || m_curIndex>m_pres->res().size())
	{
		cout << "序号无效，无法播放" << endl;

	}
	else {
		playMusic();
	}
}

#include "Res.h"
Res::Res()
{
	m_res[1] = "./res/music1.mp3";
	m_res[2] = "./res/music2.mp3";
	m_res[3] = "./res/music3.mp3";
	m_res[4] = "./res/music4.mp3";
	m_res[5] = "./res/music5.mp3";
	m_res[6] = "./res/music6.mp3";
	m_res[7] = "./res/music7.mp3";
	m_res[8] = "./res/music8.mp3";


}
map<int, string>& Res::res()
{
	// TODO: 在此处插入 return 语句
	return m_res;
}

void Res::show(int curPlayIndex)
{
	cout << "歌单：" << endl;
	for (auto v : m_res) {
		if (v.first == curPlayIndex) {
			cout << v.first << "\t" << v.second << "\t" << "<------" << endl;
		}
		else {
			cout << v.first << "\t" << v.second << endl;
		}
	}
}

#include "MusicPlay.h"
int main() {
	srand((unsigned int)time(nullptr));
	//自动推断出指针类型
	auto p=new MusicPlayer;
	while (true) {
		p->menu();
		p->showMusic();
		p->keydown();
		system("cls");
	}

	/*mciSendString("open ./res/music1.mp3",0,0,0);
	mciSendString("play ./res/music1.mp3 wait", 0, 0, 0);
	mciSendString("close ./res/music1.mp3 wait", 0, 0, 0);*/
	return 0;

}