作为团队的一员,我正在为学校开展游戏项目。我需要设置一个为游戏做音频的单例类。我们正在使用QT移植到手机,也可能用于手机。我们决定将声子用于游戏音频。我是新手,刚刚开始使用QT,也是游戏编程的新手。
音频系统应该能够同时处理多个声音。至少它必须处理背景音乐和声音效果。效果将通过信号连接到插槽。
这是我的代码:
/ * ** * ** * ** * **** < /strong>audiosystem.h * ** /
class AudioSystem : public QWidget
{
Q_OBJECT
public:
static AudioSystem *instance();
void setMusicFile(const QString &filename);
signals:
bool finishedMusic(); ///< For looping
public slots:
void playMusic(); ///< BG music triggered at Level start?
void stopMusic(); ///< Triggered by level finish
void click_sound(); ///< Menu button clicks
void step_sound(); ///< Other character sounds
void wall_sound(); ///< Hitting the wall or collision sound
void jump_sound(); ///< Jumping sound
void sound(int); ///< Level specific custom sounds
private:
// Singleton - constructors made private
AudioSystem(QWidget *parent = 0);
~AudioSystem();
AudioSystem(const AudioSystem &);
AudioSystem& operator=(const AudioSystem &);
static AudioSystem *m_Instance;
// media objects
Phonon::MediaObject *m_BgPlayer;
Phonon::MediaObject *m_EffectPlayer;
// audio sinks
Phonon::AudioOutput *m_BgAudioOutput;
Phonon::AudioOutput *m_EffectAudioOutput;
// audio paths
Phonon::Path m_BgAudioPath, m_EffAudioPath;
};
/ * ** * ** audiosystem.cpp ** /
AudioSystem* AudioSystem::m_Instance = 0;
AudioSystem* AudioSystem::instance()
{
if (!m_Instance)
{
m_Instance = new AudioSystem();
}
return m_Instance;
}
AudioSystem::AudioSystem(QWidget *parent) :
QWidget(parent)
{
// create new instance of player and audio sinks then connect with paths
m_BgPlayer = new Phonon::MediaObject(this);
m_EffectPlayer = new Phonon::MediaObject(this);
m_BgAudioOutput = new Phonon::AudioOutput(Phonon::MusicCategory, this);
m_EffectAudioOutput= new Phonon::AudioOutput(Phonon::MusicCategory, this);
m_BgAudioPath = Phonon::createPath(m_BgPlayer, m_BgAudioOutput);
m_EffAudioPath = Phonon::createPath(m_EffectPlayer, m_EffectAudioOutput);
}
void AudioSystem::setMusicFile(const QString &filename)
{
m_BgPlayer->setCurrentSource(QString(filename));
}
void AudioSystem::playMusic()
{
m_BgPlayer->play();
}
void AudioSystem::stopMusic()
{
m_BgPlayer->stop();
}
void AudioSystem::click_sound()
{
m_EffectPlayer->setCurrentSource(QString(":/button.wav"));
m_EffectPlayer->play();
}
...........................等
typical implementation:
AudioSystem::instance()->playMusic
AudioSystem::instance(), SLOT(click_sound())
我设置的代码似乎在一个简单的主窗口的简单情况下工作正常但是当我在代码中放置任何位置时它什么都不做。是我遗失的东西吗?
完整项目: GIT中://gitorious.org/gamecs340project/gamecs340project.git