132 lines
4.0 KiB
C++
132 lines
4.0 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//=============================================================================//
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#include "cbase.h"
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#include "engine/IEngineTrace.h"
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#include "fx_sparks.h"
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#include "particles_ez.h"
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#include "view.h"
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// memdbgon must be the last include file in a .cpp file!!!
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#include "tier0/memdbgon.h"
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ConVar cl_starfield_diameter( "cl_starfield_diameter", "128.0", FCVAR_NONE );
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ConVar cl_starfield_distance( "cl_starfield_distance", "256.0", FCVAR_NONE );
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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class C_EnvStarfield : public C_BaseEntity
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{
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DECLARE_CLASS( C_EnvStarfield, C_BaseEntity );
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public:
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DECLARE_CLIENTCLASS();
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C_EnvStarfield();
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virtual void OnDataChanged( DataUpdateType_t updateType );
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virtual void ClientThink( void );
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private:
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// Emitter
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CSmartPtr<CTrailParticles> m_pEmitter;
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bool m_bOn;
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float m_flDensity;
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float m_flNumParticles;
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private:
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C_EnvStarfield( const C_EnvStarfield & );
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};
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IMPLEMENT_CLIENTCLASS_DT( C_EnvStarfield, DT_EnvStarfield, CEnvStarfield )
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RecvPropInt( RECVINFO(m_bOn) ),
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RecvPropFloat( RECVINFO(m_flDensity) ),
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END_RECV_TABLE()
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// ------------------------------------------------------------------------- //
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// C_EnvStarfield
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// ------------------------------------------------------------------------- //
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C_EnvStarfield::C_EnvStarfield()
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{
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m_bOn = false;
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m_flDensity = 1.0;
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m_flNumParticles = 0;
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : updateType -
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//-----------------------------------------------------------------------------
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void C_EnvStarfield::OnDataChanged( DataUpdateType_t updateType )
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{
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if ( updateType == DATA_UPDATE_CREATED )
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{
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m_pEmitter = CTrailParticles::Create( "EnvStarfield" );
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Vector vecCenter = MainViewOrigin() + (MainViewForward() * cl_starfield_distance.GetFloat() );
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m_pEmitter->Setup( (Vector &) vecCenter,
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NULL,
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0.0,
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0,
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64,
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0,
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0,
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bitsPARTICLE_TRAIL_VELOCITY_DAMPEN | bitsPARTICLE_TRAIL_FADE | bitsPARTICLE_TRAIL_FADE_IN );
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// Start thinking
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SetNextClientThink( CLIENT_THINK_ALWAYS );
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}
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BaseClass::OnDataChanged( updateType );
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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void C_EnvStarfield::ClientThink( void )
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{
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if ( !m_bOn || !m_flDensity )
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return;
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PMaterialHandle hParticleMaterial = m_pEmitter->GetPMaterial( "effects/spark_noz" );
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// Find a start & end point for the particle
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// Start particles straight ahead of the client
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Vector vecViewOrigin = MainViewOrigin();
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// Determine the number of particles
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m_flNumParticles += 1.0 * (m_flDensity);
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int iNumParticles = floor(m_flNumParticles);
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m_flNumParticles -= iNumParticles;
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// Add particles
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for ( int i = 0; i < iNumParticles; i++ )
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{
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float flDiameter = cl_starfield_diameter.GetFloat();
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Vector vecStart = vecViewOrigin + (MainViewForward() * cl_starfield_distance.GetFloat() );
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Vector vecEnd = vecViewOrigin + (MainViewRight() * RandomFloat(-flDiameter,flDiameter)) + (MainViewUp() * RandomFloat(-flDiameter,flDiameter));
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Vector vecDir = (vecEnd - vecStart);
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float flDistance = VectorNormalize( vecDir );
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float flTravelTime = 2.0;
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// Start a random amount along the path
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vecStart += vecDir * ( RandomFloat(0.1,0.3) * flDistance );
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TrailParticle *pParticle = (TrailParticle *) m_pEmitter->AddParticle( sizeof(TrailParticle), hParticleMaterial, vecStart );
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if ( pParticle )
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{
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pParticle->m_vecVelocity = vecDir * (flDistance / flTravelTime);
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pParticle->m_flDieTime = flTravelTime;
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pParticle->m_flLifetime = 0;
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pParticle->m_flWidth = RandomFloat( 1, 3 );
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pParticle->m_flLength = RandomFloat( 0.05, 0.4 );
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pParticle->m_color.r = 255;
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pParticle->m_color.g = 255;
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pParticle->m_color.b = 255;
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pParticle->m_color.a = 255;
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}
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}
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} |