Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
//=============================================================================//
#include "cbase.h"
#include "fx_quad.h"
#include "fx.h"
class C_MortarShell : public C_BaseEntity
{
public:
DECLARE_CLASS( C_MortarShell, C_BaseEntity );
DECLARE_CLIENTCLASS();
void OnDataChanged( DataUpdateType_t updateType );
int DrawModel( int flags );
RenderGroup_t GetRenderGroup( void ) { return RENDER_GROUP_TRANSLUCENT_ENTITY; }
private:
void AddRisingParticles( float flPerc );
void AddExplodingParticles( float flPerc );
inline float GetStartPerc( void );
inline float GetEndPerc( void );
CSmartPtr<CSimpleEmitter> m_pEmitter;
TimedEvent m_ParticleEvent;
float m_flLifespan;
float m_flRadius;
float m_flStarttime;
Vector m_vecSurfaceNormal;
};
IMPLEMENT_CLIENTCLASS_DT( C_MortarShell, DT_MortarShell, CMortarShell )
RecvPropFloat( RECVINFO( m_flLifespan ) ),
RecvPropFloat( RECVINFO( m_flRadius ) ),
RecvPropVector( RECVINFO( m_vecSurfaceNormal ) ),
END_RECV_TABLE()
//-----------------------------------------------------------------------------
// Purpose:
// Input : updateType -
//-----------------------------------------------------------------------------
void C_MortarShell::OnDataChanged( DataUpdateType_t updateType )
{
BaseClass::OnDataChanged( updateType );
if ( updateType == DATA_UPDATE_CREATED )
{
m_flStarttime = gpGlobals->curtime;
AddToLeafSystem( RENDER_GROUP_TRANSLUCENT_ENTITY );
m_pEmitter = CSimpleEmitter::Create( "C_EntityDissolve" );
m_pEmitter->SetSortOrigin( GetAbsOrigin() );
m_ParticleEvent.Init( 128 );
}
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : flPerc -
//-----------------------------------------------------------------------------
void C_MortarShell::AddRisingParticles( float flPerc )
{
SimpleParticle *sParticle;
Vector offset;
float radius = m_flRadius * 0.25f * flPerc;
float val = RemapValClamped( gpGlobals->curtime, m_flStarttime, m_flStarttime + m_flLifespan, 0.0f, 1.0f );
float flCur = gpGlobals->frametime;
// Anime ground effects
while ( m_ParticleEvent.NextEvent( flCur ) )
{
offset.x = random->RandomFloat( -radius, radius );
offset.y = random->RandomFloat( -radius, radius );
offset.z = random->RandomFloat( -8.0f, 8.0f );
offset += GetAbsOrigin();
sParticle = (SimpleParticle *) m_pEmitter->AddParticle( sizeof(SimpleParticle), m_pEmitter->GetPMaterial( "effects/spark" ), offset );
if ( sParticle == NULL )
return;
sParticle->m_vecVelocity = Vector( Helper_RandomFloat( -4.0f, 4.0f ), Helper_RandomFloat( -4.0f, 4.0f ), Helper_RandomFloat( 32.0f, 256.0f ) * Bias( val, 0.25f ) );
sParticle->m_uchStartSize = random->RandomFloat( 4, 8 ) * flPerc;
sParticle->m_flDieTime = random->RandomFloat( 0.5f, 1.0f );
sParticle->m_flLifetime = 0.0f;
sParticle->m_flRoll = Helper_RandomInt( 0, 360 );
float alpha = 255 * flPerc;
sParticle->m_flRollDelta = Helper_RandomFloat( -8.0f * flPerc, 8.0f * flPerc );
sParticle->m_uchColor[0] = alpha;
sParticle->m_uchColor[1] = alpha;
sParticle->m_uchColor[2] = alpha;
sParticle->m_uchStartAlpha = alpha;
sParticle->m_uchEndAlpha = 0;
sParticle->m_uchEndSize = 0;
}
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : flPerc -
//-----------------------------------------------------------------------------
void C_MortarShell::AddExplodingParticles( float flPerc )
{
SimpleParticle *sParticle;
Vector offset;
float radius = 48.0f * flPerc;
float flCur = gpGlobals->frametime;
// Anime ground effects
while ( m_ParticleEvent.NextEvent( flCur ) )
{
offset.x = random->RandomFloat( -radius, radius );
offset.y = random->RandomFloat( -radius, radius );
offset.z = random->RandomFloat( -8.0f, 8.0f );
offset += GetAbsOrigin();
sParticle = (SimpleParticle *) m_pEmitter->AddParticle( sizeof(SimpleParticle), m_pEmitter->GetPMaterial( "effects/spark" ), offset );
if ( sParticle == NULL )
return;
sParticle->m_vecVelocity = RandomVector( -1.0f, 1.0f ) + Vector( 0, 0, 1 );
sParticle->m_vecVelocity *= ( 750.0f * flPerc );
sParticle->m_uchStartSize = random->RandomFloat( 2, 4 ) * flPerc;
sParticle->m_flDieTime = random->RandomFloat( 0.25f, 0.5f );
sParticle->m_flLifetime = 0.0f;
sParticle->m_flRoll = Helper_RandomInt( 0, 360 );
float alpha = 255 * flPerc;
sParticle->m_flRollDelta = Helper_RandomFloat( -8.0f * flPerc, 8.0f * flPerc );
sParticle->m_uchColor[0] = alpha;
sParticle->m_uchColor[1] = alpha;
sParticle->m_uchColor[2] = alpha;
sParticle->m_uchStartAlpha = alpha;
sParticle->m_uchEndAlpha = 0;
sParticle->m_uchEndSize = 0;
}
}
//-----------------------------------------------------------------------------
// Purpose:
// Output : inline float
//-----------------------------------------------------------------------------
inline float C_MortarShell::GetStartPerc( void )
{
float val = RemapValClamped( gpGlobals->curtime, m_flStarttime, m_flStarttime + m_flLifespan, 0.0f, 1.0f );
return ( Gain( val, 0.2f ) );
}
//-----------------------------------------------------------------------------
// Purpose:
// Output : inline float
//-----------------------------------------------------------------------------
inline float C_MortarShell::GetEndPerc( void )
{
float val = RemapValClamped( gpGlobals->curtime, m_flStarttime + m_flLifespan, m_flStarttime + m_flLifespan + 1.0f, 1.0f, 0.0f );
return ( Gain( val, 0.75f ) );
}
#define ALPHA_MIN 0.0f
#define ALPHA_MAX 1.0f
#define SCALE_MIN 8
#define SCALE_MAX 200
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
int C_MortarShell::DrawModel( int flags )
{
if ( gpGlobals->frametime <= 0.0f )
return 0;
float flPerc;
bool ending;
// See if we're in the beginning phase
if ( gpGlobals->curtime < ( m_flStarttime + m_flLifespan ) )
{
flPerc = GetStartPerc();
ending = false;
}
else
{
flPerc = GetEndPerc();
ending = true;
}
float flAlpha = ALPHA_MIN + ( ( ALPHA_MAX - ALPHA_MIN ) * flPerc );
float flScale = ( ending ) ? m_flRadius : ( (m_flRadius*0.1f)+ ( ( m_flRadius - (m_flRadius*0.1f) ) * flPerc ) );
// Do the ground effect
FX_AddQuad( GetAbsOrigin() + ( m_vecSurfaceNormal * 2.0f ),
m_vecSurfaceNormal,
flScale,
flScale,
1.0f,
flAlpha,
flAlpha,
1.0f,
0,
0,
Vector( 1.0f, 1.0f, 1.0f ),
0.0001f,
"effects/combinemuzzle2_nocull",
0 );
if ( !ending )
{
// Add extra effects on startup
AddRisingParticles( flPerc );
}
else
{
// Add exploding particles after the impact
AddExplodingParticles( flPerc );
}
return 1;
}