add RageSoundManager::PlayMusic

stepmania/src/RageSoundManager.cpp

@@ -19,6 +19,8 @@ RageSoundManager::RageSoundManager(CString drivers)
 	driver = MakeRageSoundDriver(drivers);
 	if(!driver)
 		RageException::Throw("Couldn't find a sound driver that works");
+
+	music = new RageSound;
 }
 
 RageSoundManager::~RageSoundManager()
@@ -29,6 +31,7 @@ RageSoundManager::~RageSoundManager()
 		delete *(j++);
 
 	delete driver;
+	delete music;
 }
 
 void RageSoundManager::StartMixing(RageSound *snd)
@@ -233,6 +236,31 @@ void RageSoundManager::MixAudio(Sint16 *dst, const Sint16 *src, Uint32 len, floa
 	}
 }
 
+void RageSoundManager::PlayMusic(CString file, bool loop, float start_sec, float length_sec)
+{
+	if( music->GetLoadedFilePath() == file && music->IsPlaying() )
+		return;		// do nothing
+
+	if(music->IsPlaying())
+		music->StopPlaying();
+	music->Load( file );
+
+	music->SetStopMode(loop? RageSound::M_LOOP:RageSound::M_STOP);
+
+	if(start_sec == -1)
+		music->SetStartSeconds();
+	else
+		music->SetStartSeconds(start_sec);
+
+	if(length_sec == -1)
+		music->SetLengthSeconds();
+	else
+		music->SetLengthSeconds(length_sec);
+	
+	music->SetPositionSeconds();
+	music->StartPlaying();
+}
+
 SoundMixBuffer::SoundMixBuffer()
 {
 	vol = .5;

stepmania/src/RageSoundManager.h

@@ -31,6 +31,8 @@ class RageSoundManager
 
 	RageSoundDriver *driver;
 
+	RageSound *music;
+
 public:
 	RageMutex lock;
 
@@ -54,6 +56,7 @@ public:
 	 * itself to this. */
 	set<RageSound *> all_sounds;
 
+	void PlayMusic(CString file, bool loop = true, float start_sec = -1, float length_sec = -1);
 	static void MixAudio(Sint16 *dst, const Sint16 *src, Uint32 len, float volume);
 };