//*
// =======================================================================================================================
// =======================================================================================================================
//
BOOL sound_Play3DSample( TRACK *psTrack, AUDIO_SAMPLE *psSample )
{
#ifndef WZ_NOSOUND
ALfloat zero[3] = { 0.0, 0.0, 0.0 };
ALfloat volume;
ALint error;
if (sfx3d_volume == 0.0)
{
return false;
}
volume = ((float)psTrack->iVol / 100.f); // max range is 0-100
psSample->fVol = volume; // store results for later
// If we can't hear it, then don't bother playing it.
if (volume == 0.0f)
{
return false;
}
// Clear error codes
alGetError();
alGenSources( 1, &(psSample->iSample) );
error = sound_GetError();
if (error != AL_NO_ERROR)
{
/* FIXME: We run out of OpenAL sources very quickly, so we
* should handle the case where we've ran out of them.
* Currently we don't do this, causing some unpleasant side
* effects, e.g. crashing...
*/
}
// HACK: this is a workaround for a bug in the 64bit implementation of OpenAL on GNU/Linux
// The AL_PITCH value really should be 1.0.
alSourcef(psSample->iSample, AL_PITCH, 1.001f);
sound_SetObjectPosition( psSample );
alSourcefv( psSample->iSample, AL_VELOCITY, zero );
alSourcei( psSample->iSample, AL_BUFFER, psTrack->iBufferName );
alSourcei( psSample->iSample, AL_LOOPING, (sound_SetupChannel(psSample)) ? AL_TRUE : AL_FALSE );
// NOTE: this is only useful for debugging.
#ifdef DEBUG
psSample->is3d = true;
psSample->isLooping = sound_TrackLooped(psSample->iTrack)? AL_TRUE : AL_FALSE;
memcpy(psSample->filename,psTrack->fileName, strlen(psTrack->fileName));
psSample->filename[strlen(psTrack->fileName)]='\0';
#endif
// Clear error codes
alGetError();
alSourcePlay( psSample->iSample );
sound_GetError();
#endif
return true;
}
void audio_Update()
{
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Vector3f playerPos;
float angle;
AUDIO_SAMPLE *psSample, *psSampleTemp;
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// if audio not enabled return true to carry on game without audio
if ( g_bAudioEnabled == false )
{
return;
}
#ifndef WZ_NOSOUND
alGetError(); // clear error codes
#endif
audio_UpdateQueue();
#ifndef WZ_NOSOUND
alGetError(); // clear error codes
#endif
// get player position
playerPos = audio_GetPlayerPos();
audio_Get3DPlayerRotAboutVerticalAxis(&angle);
sound_SetPlayerPos(playerPos);
sound_SetPlayerOrientation(angle);
// loop through 3D sounds and remove if finished or update position
psSample = g_psSampleList;
while ( psSample != NULL )
{
// remove finished samples from list
if ( psSample->bFinishedPlaying == true )
{
psSampleTemp = psSample->psNext;
audio_RemoveSample( &g_psSampleList, psSample );
free(psSample);
psSample = psSampleTemp;
}
// check looping sound callbacks for finished condition
else
{
if ( psSample->psObj != NULL )
{
if ( audio_ObjectDead(psSample->psObj)
|| (psSample->pCallback != NULL && psSample->pCallback(psSample->psObj) == false) )
{
sound_StopTrack( psSample );
psSample->psObj = NULL;
}
else
{
// update sample position
{
audio_GetObjectPos( psSample->psObj, &psSample->x, &psSample->y, &psSample->z );
#ifndef WZ_NOSOUND
sound_SetObjectPosition(psSample);
#endif
}
}
}
// next sample
psSample = psSample->psNext;
}
}
sound_Update();
return;
}