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Added original SDK code for Alien Swarm.

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This commit is contained in:
Scott Ehlert
2010-07-22 01:46:14 -05:00
commit c0a96ff1e8
3740 changed files with 1243478 additions and 0 deletions
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73
game/client/particles_attractor.cpp Normal file
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//========= Copyright <20> 1996-2005, Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
//=============================================================================//
#include "cbase.h"
#include "particles_attractor.h"
#include "tier0/memdbgon.h"
//-----------------------------------------------------------------------------
// Purpose:
// Input : &center -
// "attractor" -
// Output : CParticleAttractor
//-----------------------------------------------------------------------------
CParticleAttractor *CParticleAttractor::Create( const Vector &center, const char *pDebugName )
{
CParticleAttractor *pSystem = new CParticleAttractor( pDebugName );
pSystem->SetAttractorOrigin( center );
return pSystem;
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : *pParticle -
// timeDelta -
//-----------------------------------------------------------------------------
void CParticleAttractor::UpdateVelocity( SimpleParticle *pParticle, float timeDelta )
{
float speed = VectorNormalize( pParticle->m_vecVelocity );
Vector offset;
Vector dir = ( m_vecAttractorOrigin - pParticle->m_Pos );
VectorNormalize( dir );
speed = clamp( (speed+speed*0.2f), 0, 1024 );
pParticle->m_vecVelocity += dir * speed;
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : *pParticle -
// timeDelta -
// Output : float
//-----------------------------------------------------------------------------
float CParticleAttractor::UpdateScale( const SimpleParticle *pParticle )
{
return ( ((float)pParticle->m_uchStartSize) * sin( M_PI * (pParticle->m_flLifetime / pParticle->m_flDieTime) ) );
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : *pParticle -
// timeDelta -
// Output : float
//-----------------------------------------------------------------------------
float CParticleAttractor::UpdateAlpha( const SimpleParticle *pParticle )
{
return ( ((float)pParticle->m_uchStartAlpha/255.0f) * sin( M_PI * (pParticle->m_flLifetime / pParticle->m_flDieTime) ) );
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : &origin -
//-----------------------------------------------------------------------------
void CParticleAttractor::SetAttractorOrigin( const Vector &origin )
{
m_vecAttractorOrigin = origin;
}