void CParticleEmitter::Update( Real32 i_rTime, Real32 i_rDeltaTime, bool i_bSimulate )
{
const Real64 rInvDesiredUpdatesPerSecond = 1.0f / (Real64)m_pParent->rGetDesiredUpdatesPerSecond();
m_rEmissionRemainder += rGetEmittedParticles( i_rTime ) * rInvDesiredUpdatesPerSecond;
UInt32 iEmittedParticles = (UInt32)m_rEmissionRemainder;
m_rEmissionRemainder -= iEmittedParticles;
GeoPositionsPtr pPos = NullFC; GeoColorsPtr pCols = NullFC; MFVec3f *pSizes = 0;
if( !i_bSimulate )
{
beginEditCP( m_pDrawableParticles );
pPos = m_pDrawableParticles->getPositions(); beginEditCP( pPos );
pCols = m_pDrawableParticles->getColors(); beginEditCP( pCols );
pSizes = m_pDrawableParticles->getMFSizes();
pPos->clear(); pCols->clear(); pSizes->clear();
}
particle *pCurParticle = m_pParticles;
for( UInt32 i = 0; i < m_iNumParticles; ++i, ++pCurParticle )
{
pCurParticle->position += m_nextMovement;
bool bParticleOkay = m_pParticleType->bUpdateParticle( *pCurParticle,
i_rDeltaTime, pPos, pCols, pSizes );
if( !bParticleOkay && iEmittedParticles > 0 )
{
bParticleOkay = bSpawnParticle( *pCurParticle, i_rTime, m_pParent->RandomSpawnPoint() );
if( bParticleOkay )
{
m_pParticleType->bUpdateParticle( *pCurParticle, i_rDeltaTime, pPos, pCols, pSizes );
--iEmittedParticles;
}
}
}
m_nextMovement = Vec3f( 0.0f, 0.0f, 0.0f ); // reset movement vector
if( !i_bSimulate )
{
endEditCP( pCols ); endEditCP( pPos );
endEditCP( m_pDrawableParticles );
}
}
