mirror of
https://github.com/alliedmodders/hl2sdk.git
synced 2024-12-23 01:59:43 +08:00
88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
//========= Copyright © 1996-2005, Valve Corporation, All rights reserved. ============//
|
|
//
|
|
// Purpose:
|
|
//
|
|
// $NoKeywords: $
|
|
//=============================================================================//
|
|
#include "cbase.h"
|
|
#include "ProxyEntity.h"
|
|
#include "materialsystem/IMaterialVar.h"
|
|
#include "materialsystem/IMaterial.h"
|
|
#include "view.h"
|
|
|
|
// memdbgon must be the last include file in a .cpp file!!!
|
|
#include "tier0/memdbgon.h"
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Used for 'card' beams on lamps, this material fades the sprite out
|
|
// as the viewer nears, so that the viewer can't see that the effect is really
|
|
// a card.
|
|
//-----------------------------------------------------------------------------
|
|
class CLampBeamProxy : public CEntityMaterialProxy
|
|
{
|
|
public:
|
|
CLampBeamProxy( void );
|
|
virtual ~CLampBeamProxy( void );
|
|
virtual bool Init( IMaterial *pMaterial, KeyValues* pKeyValues );
|
|
virtual void OnBind( C_BaseEntity *pC_BaseEntity );
|
|
|
|
private:
|
|
|
|
IMaterialVar *m_pFadeValue;
|
|
};
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose:
|
|
//-----------------------------------------------------------------------------
|
|
CLampBeamProxy::CLampBeamProxy( void )
|
|
{
|
|
m_pFadeValue = NULL;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose:
|
|
//-----------------------------------------------------------------------------
|
|
CLampBeamProxy::~CLampBeamProxy( void )
|
|
{
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Get pointer to the color value
|
|
// Input : *pMaterial -
|
|
//-----------------------------------------------------------------------------
|
|
bool CLampBeamProxy::Init( IMaterial *pMaterial, KeyValues* pKeyValues )
|
|
{
|
|
assert( pMaterial );
|
|
|
|
// Need to get the color variable.
|
|
bool found;
|
|
m_pFadeValue = pMaterial->FindVar( "$alpha", &found );
|
|
return found;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose:
|
|
// Input : *pC_BaseEntity -
|
|
//-----------------------------------------------------------------------------
|
|
#define FADE_DIST 150
|
|
|
|
void CLampBeamProxy::OnBind( C_BaseEntity *pEnt )
|
|
{
|
|
if( !m_pFadeValue )
|
|
{
|
|
return;
|
|
}
|
|
|
|
Vector vecLocal;
|
|
|
|
vecLocal = pEnt->GetAbsOrigin() - CurrentViewOrigin();
|
|
VectorNormalize( vecLocal );
|
|
|
|
float fade;
|
|
fade = 1.0 - fabs( vecLocal.z );
|
|
|
|
m_pFadeValue->SetFloatValue( fade );
|
|
}
|
|
|
|
EXPOSE_INTERFACE( CLampBeamProxy, IMaterialProxy, "lampbeam" IMATERIAL_PROXY_INTERFACE_VERSION );
|