Game Development Reference
In-Depth Information
7.
Registration methods are needed to maintain the
FActiveSources
container.
Their implementations can be found in the following code:
void clAudioThread::RegisterSource( clAudioSource* Src )
{
LMutex Lock(&FMutex );
8.
Don't add the same audio source multiple times:
auto i = std::find( FActiveSources.begin(),
FActiveSources.end(), Src );
if ( i != FActiveSources.end() ) return;
FActiveSources.push_back( Src );
}
void clAudioThread::UnRegisterSource( clAudioSource* Src )
{
LMutex Lock(&FMutex );
9. Just ind the source and erase it:
auto i = std::find( FActiveSources.begin(),
FActiveSources.end(), Src );
if ( i != FActiveSources.end() ) FActiveSources.erase( i );
}
The full implementation of this new
clAudioThread
class can be found in the
sound/
Audio.cpp
and
sound/Audio.h
iles in the example
1_Game
.
How it works…
To take advantage of the new
AudioThread
class, audio sources must register themselves.
We extend the constructor and the destructor of the
clAudioSource
class to perform
RAII registration (
http://en.wikipedia.org/wiki/Resource_Acquisition_Is_
Initialization
):
clAudioSource::clAudioSource()
{
…
g_Audio.RegisterSource( this );
}
clAudioSource::~clAudioSource()
{
…
g_Audio.UnRegisterSource( this );
}
