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game/client/particle_litsmokeemitter.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================//
+
+#include "cbase.h"
+#include "particle_litsmokeemitter.h"
+
+
+//
+// CLitSmokeEmitter
+//
+
+CLitSmokeEmitter::CLitSmokeEmitter( const char *pDebugName ) : CSimpleEmitter( pDebugName )
+{
+	m_bInitted = false;
+	m_hSmokeMaterial = INVALID_MATERIAL_HANDLE;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : *materialName - 
+//-----------------------------------------------------------------------------
+void CLitSmokeEmitter::Init( const char *materialName, Vector sortOrigin )
+{
+	m_hSmokeMaterial = GetPMaterial( materialName );
+	
+	IMaterial *pMaterial = ParticleMgr()->PMaterialToIMaterial( m_hSmokeMaterial );
+	if ( pMaterial )
+	{
+		m_Renderer.Init( ParticleMgr(), pMaterial );
+	}
+
+	SetSortOrigin( sortOrigin );
+	m_bInitted = true;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : position - 
+//			color - 
+//-----------------------------------------------------------------------------
+void CLitSmokeEmitter::SetDirectionalLight( Vector position, Vector color, float intensity )
+{
+	CParticleLightInfo info;
+	info.m_flIntensity = intensity;
+	info.m_vColor = color;
+	info.m_vPos	= position;
+	
+	m_Renderer.SetDirectionalLight( info );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : position - 
+//			color - 
+//			intensity - 
+//-----------------------------------------------------------------------------
+void CLitSmokeEmitter::SetLight( Vector position, Vector color, float intensity )
+{
+	CParticleLightInfo info;
+	info.m_flIntensity = intensity;
+	info.m_vColor = color;
+	info.m_vPos	= position;
+
+	m_Renderer.SetAmbientLight( info );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : flTimeDelta - 
+//-----------------------------------------------------------------------------
+void CLitSmokeEmitter::Update( float flTimeDelta )
+{
+	if ( flTimeDelta > 0.0f )
+	{
+		//m_Renderer.DirectionalLight().m_vColor *= 0.9f;
+	}
+
+	CSimpleEmitter::Update( flTimeDelta );
+}
+
+void CLitSmokeEmitter::StartRender( VMatrix &effectMatrix )
+{
+	m_Renderer.StartRender( effectMatrix );
+}
+
+void CLitSmokeEmitter::RenderParticles( CParticleRenderIterator *pIterator )
+{
+	const LitSmokeParticle *pParticle = (const LitSmokeParticle*)pIterator->GetFirst();
+	while ( pParticle )
+	{
+		float	tLifetime = pParticle->m_flLifetime / pParticle->m_flDieTime;
+
+		// Transform.						   
+		Vector tPos;
+
+		TransformParticle( ParticleMgr()->GetModelView(), pParticle->m_Pos, tPos );
+		float sortKey = tPos.z;
+		
+		float alpha255 = ( ( (float) pParticle->m_uchColor[3]/255.0f ) * sin( M_PI_F * tLifetime ) ) * 255.0f;
+
+		Vector	color01 = Vector( pParticle->m_uchColor[0], pParticle->m_uchColor[1], pParticle->m_uchColor[2] ) * (tLifetime / 255.0f);
+
+		m_Renderer.RenderParticle_AddColor (
+			pIterator->GetParticleDraw(),
+			pParticle->m_Pos,
+			tPos,
+			alpha255,
+			FLerp( pParticle->m_uchStartSize, pParticle->m_uchEndSize, tLifetime ),
+			color01
+		);
+		
+		pParticle = (const LitSmokeParticle*)pIterator->GetNext( sortKey );
+	}
+}
+
+
+void CLitSmokeEmitter::SimulateParticles( CParticleSimulateIterator *pIterator )
+{
+	// Make sure they've called Init().
+	Assert( m_bInitted );
+	
+	LitSmokeParticle *pParticle = (LitSmokeParticle*)pIterator->GetFirst();
+	while ( pParticle )
+	{
+		// Should this particle die?
+		pParticle->m_flLifetime += pIterator->GetTimeDelta();
+		pParticle->m_Pos = pParticle->m_Pos + ( pParticle->m_vecVelocity * pIterator->GetTimeDelta() );
+
+		if ( pParticle->m_flLifetime >= pParticle->m_flDieTime )
+			pIterator->RemoveParticle( pParticle );
+
+		pParticle = (LitSmokeParticle*)pIterator->GetNext();
+	}
+}
+
+