1 files changed, 132 insertions, 0 deletions
diff --git a/game/client/hl2/c_env_starfield.cpp b/game/client/hl2/c_env_starfield.cpp
new file mode 100644
index 0000000..632c6f3
--- /dev/null
+++ b/game/client/hl2/c_env_starfield.cpp
@@ -0,0 +1,132 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+#include "cbase.h"
+#include "engine/IEngineTrace.h"
+#include "fx_sparks.h"
+#include "particles_ez.h"
+#include "view.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+ConVar cl_starfield_diameter( "cl_starfield_diameter", "128.0", FCVAR_NONE );
+ConVar cl_starfield_distance( "cl_starfield_distance", "256.0", FCVAR_NONE );
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+class C_EnvStarfield : public C_BaseEntity
+{
+	DECLARE_CLASS( C_EnvStarfield, C_BaseEntity );
+public:
+	DECLARE_CLIENTCLASS();
+
+	C_EnvStarfield();
+
+	virtual void	OnDataChanged( DataUpdateType_t updateType );
+	virtual void	ClientThink( void );
+	
+private:
+	// Emitter
+	CSmartPtr<CTrailParticles> m_pEmitter;
+	bool	m_bOn;
+	float	m_flDensity;
+	float	m_flNumParticles;
+
+private:
+	C_EnvStarfield( const C_EnvStarfield & );
+};
+
+IMPLEMENT_CLIENTCLASS_DT( C_EnvStarfield, DT_EnvStarfield, CEnvStarfield )
+	RecvPropInt( RECVINFO(m_bOn) ),
+	RecvPropFloat( RECVINFO(m_flDensity) ),
+END_RECV_TABLE()
+
+// ------------------------------------------------------------------------- //
+// C_EnvStarfield
+// ------------------------------------------------------------------------- //
+C_EnvStarfield::C_EnvStarfield()
+{
+	m_bOn = false;
+	m_flDensity = 1.0;
+	m_flNumParticles = 0;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : updateType - 
+//-----------------------------------------------------------------------------
+void C_EnvStarfield::OnDataChanged( DataUpdateType_t updateType )
+{		
+	if ( updateType == DATA_UPDATE_CREATED )
+	{
+		m_pEmitter = CTrailParticles::Create( "EnvStarfield" );
+		Vector vecCenter = MainViewOrigin() + (MainViewForward() * cl_starfield_distance.GetFloat() );
+		m_pEmitter->Setup( (Vector &) vecCenter, 
+			NULL, 
+			0.0, 
+			0, 
+			64, 
+			0, 
+			0, 
+			bitsPARTICLE_TRAIL_VELOCITY_DAMPEN | bitsPARTICLE_TRAIL_FADE | bitsPARTICLE_TRAIL_FADE_IN );
+
+		// Start thinking
+		SetNextClientThink( CLIENT_THINK_ALWAYS );
+	}
+
+	BaseClass::OnDataChanged( updateType );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void C_EnvStarfield::ClientThink( void )
+{
+	if ( !m_bOn || !m_flDensity ) 
+		return;
+
+	PMaterialHandle	hParticleMaterial = m_pEmitter->GetPMaterial( "effects/spark_noz" );
+
+	// Find a start & end point for the particle
+	// Start particles straight ahead of the client
+	Vector vecViewOrigin = MainViewOrigin();
+
+	// Determine the number of particles
+	m_flNumParticles += 1.0 * (m_flDensity);
+	int iNumParticles = floor(m_flNumParticles);
+	m_flNumParticles -= iNumParticles;
+
+	// Add particles
+	for ( int i = 0; i < iNumParticles; i++ )
+	{
+		float flDiameter = cl_starfield_diameter.GetFloat();
+
+		Vector vecStart = vecViewOrigin + (MainViewForward() * cl_starfield_distance.GetFloat() );
+		Vector vecEnd = vecViewOrigin + (MainViewRight() * RandomFloat(-flDiameter,flDiameter)) + (MainViewUp() * RandomFloat(-flDiameter,flDiameter));
+		Vector vecDir = (vecEnd - vecStart);
+		float flDistance = VectorNormalize( vecDir );
+		float flTravelTime = 2.0;
+		
+		// Start a random amount along the path
+		vecStart += vecDir * ( RandomFloat(0.1,0.3) * flDistance );
+
+		TrailParticle *pParticle = (TrailParticle *) m_pEmitter->AddParticle( sizeof(TrailParticle), hParticleMaterial, vecStart );
+		if ( pParticle )
+		{
+			pParticle->m_vecVelocity = vecDir * (flDistance / flTravelTime);
+			pParticle->m_flDieTime = flTravelTime;
+			pParticle->m_flLifetime = 0;
+			pParticle->m_flWidth = RandomFloat( 1, 3 );
+			pParticle->m_flLength = RandomFloat( 0.05, 0.4 );
+			pParticle->m_color.r	= 255;
+			pParticle->m_color.g	= 255;
+			pParticle->m_color.b	= 255;
+			pParticle->m_color.a	= 255;
+		}
+	}
+}
+\ No newline at end of file