void CAI_Senses::Listen( void )
{
m_iAudibleList = SOUNDLIST_EMPTY;
int iSoundMask = GetOuter()->GetSoundInterests();
if ( iSoundMask != SOUND_NONE && !(GetOuter()->HasSpawnFlags(SF_NPC_WAIT_TILL_SEEN)) )
{
int iSound = CSoundEnt::ActiveList();
while ( iSound != SOUNDLIST_EMPTY )
{
CSound *pCurrentSound = CSoundEnt::SoundPointerForIndex( iSound );
if ( pCurrentSound && (iSoundMask & pCurrentSound->SoundType()) && CanHearSound( pCurrentSound ) )
{
// the npc cares about this sound, and it's close enough to hear.
pCurrentSound->m_iNextAudible = m_iAudibleList;
m_iAudibleList = iSound;
}
iSound = pCurrentSound->NextSound();
}
}
GetOuter()->OnListened();
}
//-----------------------------------------------------------------------------
// Purpose: Listens for sounds and updates the value of the SoundLevel output.
//-----------------------------------------------------------------------------
void CEnvMicrophone::Think(void)
{
int nSound = CSoundEnt::ActiveList();
bool fHearSound = false;
float flMaxVolume = 0;
//
// Find the loudest sound that this microphone cares about.
//
while (nSound != SOUNDLIST_EMPTY)
{
CSound *pCurrentSound = CSoundEnt::SoundPointerForIndex(nSound);
if (pCurrentSound)
{
if (m_nSoundMask & pCurrentSound->SoundType())
{
float flVolume = 0;
if (CanHearSound(pCurrentSound, flVolume) && (flVolume > flMaxVolume))
{
flMaxVolume = flVolume;
fHearSound = true;
}
}
}
nSound = pCurrentSound->NextSound();
}
if( fHearSound )
{
m_OnHeardSound.FireOutput( this, this );
}
if (flMaxVolume != m_SoundLevel.Get())
{
//
// Don't smooth if we are within an epsilon. This allows the output to stop firing
// much more quickly.
//
if (fabs(flMaxVolume - m_SoundLevel.Get()) < MICROPHONE_SETTLE_EPSILON)
{
m_SoundLevel.Set(flMaxVolume, this, this);
}
else
{
m_SoundLevel.Set(flMaxVolume * (1 - m_flSmoothFactor) + m_SoundLevel.Get() * m_flSmoothFactor, this, this);
}
}
SetNextThink( gpGlobals->curtime + 0.1f );
}
