302 lines
8.1 KiB
C++
302 lines
8.1 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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//=============================================================================//
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#include "cbase.h"
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#include "c_grenadetrail.h"
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#include "fx.h"
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//#include "engine/ivdebugoverlay.h"
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//#include "engine/IEngineSound.h"
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//#include "c_te_effect_dispatch.h"
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//#include "glow_overlay.h"
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//#include "fx_explosion.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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class CSmokeParticle : public CSimpleEmitter
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{
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public:
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CSmokeParticle( const char *pDebugName ) : CSimpleEmitter( pDebugName ) {}
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//Create
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static CSmokeParticle *Create( const char *pDebugName )
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{
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return new CSmokeParticle( pDebugName );
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}
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//Alpha
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virtual float UpdateAlpha( const SimpleParticle *pParticle )
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{
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return ( ((float)pParticle->m_uchStartAlpha/255.0f) * sin( M_PI * (pParticle->m_flLifetime / pParticle->m_flDieTime) ) );
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}
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//Color
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virtual Vector UpdateColor( const SimpleParticle *pParticle )
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{
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Vector color;
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float tLifetime = pParticle->m_flLifetime / pParticle->m_flDieTime;
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float ramp = 1.0f - tLifetime;
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Vector endcolor(75, 75, 75);
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color[0] = ( (float) pParticle->m_uchColor[0] * ramp ) / 255.0f + ( 1-ramp) * endcolor[0];
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color[1] = ( (float) pParticle->m_uchColor[1] * ramp ) / 255.0f + ( 1-ramp) * endcolor[1];
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color[2] = ( (float) pParticle->m_uchColor[2] * ramp ) / 255.0f + ( 1-ramp) * endcolor[2];
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return color;
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}
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//Roll
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virtual float UpdateRoll( SimpleParticle *pParticle, float timeDelta )
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{
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pParticle->m_flRoll += pParticle->m_flRollDelta * timeDelta;
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pParticle->m_flRollDelta += pParticle->m_flRollDelta * ( timeDelta * -8.0f );
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//Cap the minimum roll
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if ( fabs( pParticle->m_flRollDelta ) < 0.5f )
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{
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pParticle->m_flRollDelta = ( pParticle->m_flRollDelta > 0.0f ) ? 0.5f : -0.5f;
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}
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return pParticle->m_flRoll;
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}
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private:
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CSmokeParticle( const CSmokeParticle & );
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};
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// Datatable.. this can have all the smoketrail parameters when we need it to.
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IMPLEMENT_CLIENTCLASS_DT(C_GrenadeTrail, DT_GrenadeTrail, CGrenadeTrail)
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RecvPropFloat(RECVINFO(m_SpawnRate)),
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RecvPropFloat(RECVINFO(m_ParticleLifetime)),
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RecvPropFloat(RECVINFO(m_StopEmitTime)),
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RecvPropInt(RECVINFO(m_bEmit)),
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RecvPropInt(RECVINFO(m_nAttachment)),
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END_RECV_TABLE()
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// ------------------------------------------------------------------------- //
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// ParticleMovieExplosion
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// ------------------------------------------------------------------------- //
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C_GrenadeTrail::C_GrenadeTrail()
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{
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m_MaterialHandle[0] = NULL;
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m_MaterialHandle[1] = NULL;
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// things that we will change
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m_SpawnRate = 10;
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m_ParticleLifetime = 5;
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m_bEmit = true;
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m_nAttachment = -1;
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m_StopEmitTime = 0; // No end time
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// invariants
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m_ParticleSpawn.Init(10);
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m_StartColor.Init(0.65, 0.65, 0.65);
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m_MinSpeed = 2;
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m_MaxSpeed = 6;
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m_MinDirectedSpeed = m_MaxDirectedSpeed = 0;
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m_StartSize = 2;
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m_EndSize = 6;
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m_SpawnRadius = 2;
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m_VelocityOffset.Init();
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m_Opacity = 0.3f;
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m_pSmokeEmitter = NULL;
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m_pParticleMgr = NULL;
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}
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C_GrenadeTrail::~C_GrenadeTrail()
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{
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if ( m_pParticleMgr )
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{
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m_pParticleMgr->RemoveEffect( &m_ParticleEffect );
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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void C_GrenadeTrail::GetAimEntOrigin( IClientEntity *pAttachedTo, Vector *pAbsOrigin, QAngle *pAbsAngles )
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{
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C_BaseEntity *pEnt = pAttachedTo->GetBaseEntity();
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if (pEnt && (m_nAttachment > 0))
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{
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pEnt->GetAttachment( m_nAttachment, *pAbsOrigin, *pAbsAngles );
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}
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else
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{
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BaseClass::GetAimEntOrigin( pAttachedTo, pAbsOrigin, pAbsAngles );
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : bEmit -
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//-----------------------------------------------------------------------------
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void C_GrenadeTrail::SetEmit(bool bEmit)
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{
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m_bEmit = bEmit;
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : rate -
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//-----------------------------------------------------------------------------
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void C_GrenadeTrail::SetSpawnRate(float rate)
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{
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m_SpawnRate = rate;
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m_ParticleSpawn.Init(rate);
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : bnewentity -
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//-----------------------------------------------------------------------------
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void C_GrenadeTrail::OnDataChanged(DataUpdateType_t updateType)
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{
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C_BaseEntity::OnDataChanged(updateType);
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if ( updateType == DATA_UPDATE_CREATED )
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{
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Start( ParticleMgr(), NULL );
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : *pParticleMgr -
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// *pArgs -
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//-----------------------------------------------------------------------------
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void C_GrenadeTrail::Start( CParticleMgr *pParticleMgr, IPrototypeArgAccess *pArgs )
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{
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if(!pParticleMgr->AddEffect( &m_ParticleEffect, this ))
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return;
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m_pParticleMgr = pParticleMgr;
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m_pSmokeEmitter = CSmokeParticle::Create("smokeTrail");
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if ( !m_pSmokeEmitter )
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{
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Assert( false );
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return;
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}
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m_pSmokeEmitter->SetSortOrigin( GetAbsOrigin() );
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m_pSmokeEmitter->SetNearClip( 64.0f, 128.0f );
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m_MaterialHandle[0] = g_Mat_DustPuff[0];
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m_MaterialHandle[1] = g_Mat_DustPuff[1];
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m_ParticleSpawn.Init( m_SpawnRate );
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : fTimeDelta -
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//-----------------------------------------------------------------------------
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void C_GrenadeTrail::Update( float fTimeDelta )
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{
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if ( !m_pSmokeEmitter )
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return;
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// Grenades thrown out of the PVS should not draw particles at the world origin
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if ( IsDormant() )
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return;
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Vector offsetColor;
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// Add new particles
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if ( !m_bEmit )
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return;
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if ( ( m_StopEmitTime != 0 ) && ( m_StopEmitTime <= gpGlobals->curtime ) )
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return;
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float tempDelta = fTimeDelta;
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SimpleParticle *pParticle;
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Vector offset;
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Vector vecOrigin;
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VectorMA( GetAbsOrigin(), -fTimeDelta, GetAbsVelocity(), vecOrigin );
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Vector vecForward;
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GetVectors( &vecForward, NULL, NULL );
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while( m_ParticleSpawn.NextEvent( tempDelta ) )
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{
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float fldt = fTimeDelta - tempDelta;
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offset.Random( -m_SpawnRadius, m_SpawnRadius );
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offset += vecOrigin;
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VectorMA( offset, fldt, GetAbsVelocity(), offset );
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pParticle = (SimpleParticle *) m_pSmokeEmitter->AddParticle( sizeof( SimpleParticle ), m_MaterialHandle[random->RandomInt(0,1)], offset );
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if ( pParticle == NULL )
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continue;
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pParticle->m_flLifetime = 0.0f;
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pParticle->m_flDieTime = m_ParticleLifetime;
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pParticle->m_iFlags = 0; // no wind!
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pParticle->m_vecVelocity.Random( -1.0f, 1.0f );
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pParticle->m_vecVelocity *= random->RandomFloat( m_MinSpeed, m_MaxSpeed );
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float flDirectedVel = random->RandomFloat( m_MinDirectedSpeed, m_MaxDirectedSpeed );
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VectorMA( pParticle->m_vecVelocity, flDirectedVel, vecForward, pParticle->m_vecVelocity );
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pParticle->m_vecVelocity[2] += 15;
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offsetColor = m_StartColor;
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float flMaxVal = MAX( m_StartColor[0], m_StartColor[1] );
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if ( flMaxVal < m_StartColor[2] )
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{
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flMaxVal = m_StartColor[2];
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}
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offsetColor /= flMaxVal;
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offsetColor *= random->RandomFloat( -0.2f, 0.2f );
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offsetColor += m_StartColor;
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offsetColor[0] = clamp( offsetColor[0], 0.0f, 1.0f );
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offsetColor[1] = clamp( offsetColor[1], 0.0f, 1.0f );
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offsetColor[2] = clamp( offsetColor[2], 0.0f, 1.0f );
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pParticle->m_uchColor[0] = offsetColor[0]*255.0f;
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pParticle->m_uchColor[1] = offsetColor[1]*255.0f;
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pParticle->m_uchColor[2] = offsetColor[2]*255.0f;
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pParticle->m_uchStartSize = m_StartSize;
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pParticle->m_uchEndSize = m_EndSize;
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float alpha = random->RandomFloat( m_Opacity*0.75f, m_Opacity*1.25f );
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alpha = clamp( alpha, 0.0f, 1.0f );
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pParticle->m_uchStartAlpha = alpha * 255;
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pParticle->m_uchEndAlpha = 0;
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pParticle->m_flRoll = random->RandomInt( 0, 360 );
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pParticle->m_flRollDelta = random->RandomFloat( -1.0f, 1.0f );
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}
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}
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void C_GrenadeTrail::RenderParticles( CParticleRenderIterator *pIterator )
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{
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}
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void C_GrenadeTrail::SimulateParticles( CParticleSimulateIterator *pIterator )
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{
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}
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