SFML - Audio Demo

#include <SFML/Graphics.hpp>
#include <SFML/Audio.hpp>
#include <iostream>

#define FPS 60

using namespace std;

// Usage: this.exe musicfilename soundfilename
// Sample files to use: my.mixtape.moe/kpcaxi.wav
//                      my.mixtape.moe/obopyb.wav

void help()
{
    cout << "Music Controls:            \n";
    cout << " > M - play/pause          \n";
    cout << " > R - restart             \n";
    cout << " > W - increase volume     \n";
    cout << " > S - decrease volume     \n";
    cout << " > D - increase pitch      \n";
    cout << " > A - decrease pitch      \n";
    cout << "Sound Controls:            \n";
    cout << " > Space - play            \n";
    cout << " > Up    - increase volume \n";
    cout << " > Down  - decrease volume \n";
    cout << " > Right - increase pitch  \n";
    cout << " > Left  - decrease pitch  \n";
    cout << "Press H for help." << endl;
}

int main(int argc,  char **argv)
{
    string musicFilename(argv[1]);
    string soundFilename(argv[2]);

    sf::Music music;
    if (!music.openFromFile(musicFilename))
    {
        cout << "Error loading music." << endl;
        return 0;
    }
    music.setLoop(true);

    float musicPitch = 1.f;
    float musicVol = 100.f;

    sf::SoundBuffer buffer;
    if (!buffer.loadFromFile(soundFilename))
    {
        cout << "Error loading sound." << endl;
        return 0;
    }

    sf::Sound sounds[32];
    for (int i = 0; i < 32; i++) { sounds[i].setBuffer(buffer); }

    int currentsound = 0;
    float soundPitch = 1.f;
    float soundVol = 100.f;

    //initialize window.
    sf::RenderWindow window( sf::VideoMode( 800, 600 ), "h" );
    window.setFramerateLimit( FPS );
    window.setKeyRepeatEnabled(false);
    help();

    while( window.isOpen() )
    {
        sf::Event event;
        while( window.pollEvent( event ) )
        {
            switch( event.type ) {
                case sf::Event::Closed:
                    window.close();
                    break;
                case sf::Event::KeyPressed:
                    if( event.key.code == sf::Keyboard::Escape ) { window.close(); }

                    // Main Controls

                    // Help
                    if( event.key.code == sf::Keyboard::H )
                    {
                        help();
                    }

                    // Music: Play/Pause
                    if( event.key.code == sf::Keyboard::M )
                    {
                        if( music.getStatus() == sf::SoundSource::Status::Playing )
                        {
                            music.pause();
                            cout << "Music paused." << endl;
                        }
                        else
                        {
                            music.play();
                            cout << "Music playing." << endl;
                        }
                    }

                    // Music: Reset
                    if( event.key.code == sf::Keyboard::R )
                    {
                        music.stop();
                        music.play();
                        cout << "Music restarted." << endl;
                    }

                    // Music: Decrease Pitch
                    if( event.key.code == sf::Keyboard::A )
                    {
                        if( musicPitch > 0.1f )
                        {
                            musicPitch -= 0.1f;
                            music.setPitch(musicPitch);
                            cout << "Music -Pitch.  Now at " << musicPitch << endl;
                        }
                        else
                        {
                            musicPitch = 0.1f;
                            cout << "Music at minimum pitch." << endl;
                        }
                    }

                    // Music: Increase Pitch
                    if( event.key.code == sf::Keyboard::D )
                    {
                        musicPitch += 0.1f;
                        music.setPitch(musicPitch);
                        cout << "Music +Pitch.  Now at " << musicPitch << endl;
                    }

                    // Music: Decrease Volume
                    if( event.key.code == sf::Keyboard::S )
                    {
                        if( musicVol > 0.f )
                        {
                            musicVol -= 2.5f;
                            music.setVolume(musicVol);
                            cout << "Music -Volume. Now at " << musicVol << endl;
                        }
                        else
                        {
                            musicVol = 0.f;
                            music.setVolume(musicVol);
                            cout << "Music at minimum volume." << endl;
                        }
                    }

                    // Music: Increase Volume
                    if( event.key.code == sf::Keyboard::W )
                    {
                        musicVol += 2.5f;
                        if( musicVol > 100.f )
                        {
                            musicVol = 100.f;
                            music.setVolume(musicVol);
                            cout << "Music at maximum volume." << endl;
                        }
                        else
                        {
                            music.setVolume(musicVol);
                            cout << "Music +Volume. Now at " << musicVol << endl;
                        }
                    }

                    // Sound: Play
                    if( event.key.code == sf::Keyboard::Space )
                    {
                        sounds[currentsound].setPitch(soundPitch);
                        sounds[currentsound].setVolume(soundVol);

                        cout << "Playing sound on track " << currentsound << endl;
                        sounds[currentsound].play();
                        if( currentsound >= 31 ) { currentsound = 0; }
                        else { currentsound++; }
                    }

                    // Sound: Decrease Pitch
                    if( event.key.code == sf::Keyboard::Left )
                    {
                        if( soundPitch > 0.1f )
                        {
                            soundPitch -= 0.1f;
                            cout << "Sound -Pitch.  Now at " << soundPitch << endl;
                        }
                        else
                        {
                            soundPitch = 0.1f;
                            cout << "Sound at minimum pitch." << endl;
                        }
                    }

                    // Sound: Increase Pitch
                    if( event.key.code == sf::Keyboard::Right )
                    {
                        soundPitch += 0.1f;
                        cout << "Sound +Pitch.  Now at " << soundPitch << endl;
                    }

                    // Sound: Decrease Volume
                    if( event.key.code == sf::Keyboard::Down )
                    {
                        if( soundVol > 0.f )
                        {
                            soundVol -= 2.5f;
                            cout << "Sound -Volume. Now at " << soundVol << endl;
                        }
                        else
                        {
                            soundVol = 0.f;
                            cout << "Sound at minimum volume." << endl;
                        }
                    }

                    // Sound: Increase Volume
                    if( event.key.code == sf::Keyboard::Up )
                    {
                        soundVol += 2.5f;
                        if( soundVol > 100.f )
                        {
                            soundVol = 100.f;
                            cout << "Sound at maximum volume." << endl;
                        }
                        else { cout << "Sound +Volume. Now at " << soundVol << endl; }
                    }

                    break;
            }
        }
        window.clear();
    }

    return 0;
}