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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//=============================================================================//
#include "cbase.h"
#include "particlemgr.h"
#include "particle_prototype.h"
#include "particle_util.h"
#include "c_te_particlesystem.h"
#include "fx.h"
#include "fx_quad.h"
#include "c_te_effect_dispatch.h"
#include "view.h"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
#define THUMPER_DUST_LIFETIME 2.0f
#define THUMPER_MAX_PARTICLES 24
extern IPhysicsSurfaceProps *physprops;
class ThumperDustEmitter : public CSimpleEmitter
{
public:
ThumperDustEmitter( const char *pDebugName ) : CSimpleEmitter( pDebugName ) {}
static ThumperDustEmitter *Create( const char *pDebugName )
{
return new ThumperDustEmitter( pDebugName );
}
void UpdateVelocity( SimpleParticle *pParticle, float timeDelta )
{
// Float up when lifetime is half gone.
pParticle->m_vecVelocity[2] -= ( 8.0f * timeDelta );
// FIXME: optimize this....
pParticle->m_vecVelocity *= ExponentialDecay( 0.9, 0.03, timeDelta );
}
virtual float UpdateRoll( SimpleParticle *pParticle, float timeDelta )
{
pParticle->m_flRoll += pParticle->m_flRollDelta * timeDelta;
pParticle->m_flRollDelta += pParticle->m_flRollDelta * ( timeDelta * -4.0f );
//Cap the minimum roll
if ( fabs( pParticle->m_flRollDelta ) < 0.25f )
{
pParticle->m_flRollDelta = ( pParticle->m_flRollDelta > 0.0f ) ? 0.25f : -0.25f;
}
return pParticle->m_flRoll;
}
virtual float UpdateAlpha( const SimpleParticle *pParticle )
{
return (pParticle->m_uchStartAlpha/255.0f) + ( (float)(pParticle->m_uchEndAlpha/255.0f) - (float)(pParticle->m_uchStartAlpha/255.0f) ) * (pParticle->m_flLifetime / pParticle->m_flDieTime);
}
private:
ThumperDustEmitter( const ThumperDustEmitter & );
};
//-----------------------------------------------------------------------------
// Purpose:
// Input : bNewEntity - whether or not to start a new entity
//-----------------------------------------------------------------------------
void FX_ThumperDust( const CEffectData &data )
{
Vector vecDustColor;
vecDustColor.x = 0.85f;
vecDustColor.y = 0.75f;
vecDustColor.z = 0.52f;
CSmartPtr<ThumperDustEmitter> pSimple = ThumperDustEmitter::Create( "thumperdust" );
C_BaseEntity *pEnt = C_BaseEntity::Instance( data.m_hEntity );
if ( pEnt )
{
Vector vWorldMins, vWorldMaxs;
float scale = pEnt->CollisionProp()->BoundingRadius();
vWorldMins[0] = data.m_vOrigin[0] - scale;
vWorldMins[1] = data.m_vOrigin[1] - scale;
vWorldMins[2] = data.m_vOrigin[2] - scale;
vWorldMaxs[0] = data.m_vOrigin[0] + scale;
vWorldMaxs[1] = data.m_vOrigin[1] + scale;
vWorldMaxs[2] = data.m_vOrigin[2] + scale;
pSimple->GetBinding().SetBBox( vWorldMins, vWorldMaxs, true );
}
pSimple->SetSortOrigin( data.m_vOrigin );
pSimple->SetNearClip( 32, 64 );
SimpleParticle *pParticle = NULL;
Vector offset;
//int numPuffs = IsXbox() ? THUMPER_MAX_PARTICLES/2 : THUMPER_MAX_PARTICLES;
int numPuffs = THUMPER_MAX_PARTICLES;
float flYaw = 0;
float flIncr = (2*M_PI) / (float) numPuffs; // Radians
Vector forward;
Vector vecColor;
int i = 0;
float flScale = MIN( data.m_flScale, 255 );
// Setup the color for these particles
engine->ComputeLighting( data.m_vOrigin, NULL, true, vecColor );
VectorLerp( vecColor, vecDustColor, 0.5, vecColor );
vecColor *= 255;
for ( i = 0; i < numPuffs; i++ )
{
flYaw += flIncr;
SinCos( flYaw, &forward.y, &forward.x );
forward.z = 0.0f;
offset = ( RandomVector( -4.0f, 4.0f ) + data.m_vOrigin ) + ( forward * 128.0f );
pParticle = (SimpleParticle *) pSimple->AddParticle( sizeof(SimpleParticle), g_Mat_DustPuff[random->RandomInt(0,1)], offset );
if ( pParticle != NULL )
{
pParticle->m_flLifetime = 0.0f;
pParticle->m_flDieTime = 1.5f;
Vector dir = (offset - data.m_vOrigin);
float length = dir.Length();
VectorNormalize( dir );
pParticle->m_vecVelocity = dir * ( length * 2.0f );
pParticle->m_vecVelocity[2] = data.m_flScale / 3;
pParticle->m_uchColor[0] = vecColor[0];
pParticle->m_uchColor[1] = vecColor[1];
pParticle->m_uchColor[2] = vecColor[2];
pParticle->m_uchStartAlpha = random->RandomInt( 64, 96 );
pParticle->m_uchEndAlpha = 0;
pParticle->m_uchStartSize = flScale * 0.25f;
pParticle->m_uchEndSize = flScale * 0.5f;
pParticle->m_flRoll = random->RandomInt( 0, 360 );
pParticle->m_flRollDelta = random->RandomFloat( -6.0f, 6.0f );
}
}
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : &data -
//-----------------------------------------------------------------------------
void ThumperDustCallback( const CEffectData &data )
{
FX_ThumperDust( data );
}
DECLARE_CLIENT_EFFECT( "ThumperDust", ThumperDustCallback );
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