//-----------------------------------------------------------------------------
// Purpose:
// Input : *pInParticle -
// *pDraw -
// &sortKey -
// Output : Returns true on success, false on failure.
//-----------------------------------------------------------------------------
bool C_PerfTest::SimulateAndRender(Particle *pInParticle, ParticleDraw *pDraw, float &sortKey)
{
PerfTestParticle *pParticle = (PerfTestParticle*)pInParticle;
// Render.
Vector tPos;
TransformParticle(m_pParticleMgr->GetModelView(), pParticle->m_Pos, tPos);
sortKey = tPos.z;
Vector vColor( 0, 0, 0 );
for( int i=0; i < NUM_LIGHTS; i++ )
{
float fDist = pParticle->m_Pos.DistToSqr( m_LightPos[i] );
float fAmt;
if( fDist > 0.0001f )
fAmt = m_LightIntensity[i] / fDist;
else
fAmt = 1000;
vColor += m_LightColor[i] * fAmt;
}
vColor = vColor.Min( Vector(255.1,255.1,255.1) );
RenderParticle_Color255Size(
pDraw,
tPos,
vColor, // color
255, // alpha
1 // size
);
return true;
}
void CDustEffect::RenderParticles( CParticleRenderIterator *pIterator )
{
const CFuncDustParticle *pParticle = (const CFuncDustParticle*)pIterator->GetFirst();
while ( pParticle )
{
// Velocity.
float flAlpha;
if( m_pDust->m_DustFlags & DUSTFLAGS_FROZEN )
{
flAlpha = 1;
}
else
{
// Alpha.
float flAngle = (pParticle->m_flLifetime / pParticle->m_flDieTime) * M_PI * 2;
flAlpha = sin( flAngle - (M_PI * 0.5f) ) * 0.5f + 0.5f;
}
Vector tPos;
TransformParticle( ParticleMgr()->GetModelView(), pParticle->m_Pos, tPos );
float sortKey = (int) tPos.z;
if( -tPos.z <= m_pDust->m_DistMax )
{
flAlpha *= 1 + (tPos.z / m_pDust->m_DistMax);
// Draw it.
float flSize = pParticle->m_flSize;
if( m_pDust->m_DustFlags & DUSTFLAGS_SCALEMOTES )
flSize *= -tPos.z;
RenderParticle_Color255Size(
pIterator->GetParticleDraw(),
tPos,
Vector( m_pDust->m_Color.r, m_pDust->m_Color.g, m_pDust->m_Color.b ),
flAlpha * m_pDust->m_Color.a,
flSize
);
}
pParticle = (const CFuncDustParticle*)pIterator->GetNext( sortKey );
}
}
