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:
//
// $NoKeywords: $
//=============================================================================//
#include "cbase.h"
#include "proxyentity.h"
#include "materialsystem/imaterial.h"
#include "materialsystem/imaterialvar.h"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
// $sineVar : name of variable that controls the alpha level (float)
class CAlphaMaterialProxy : public CEntityMaterialProxy
{
public:
CAlphaMaterialProxy();
virtual ~CAlphaMaterialProxy();
virtual bool Init( IMaterial *pMaterial, KeyValues *pKeyValues );
virtual void OnBind( C_BaseEntity *pEntity );
virtual IMaterial *GetMaterial();
private:
IMaterialVar *m_AlphaVar;
};
CAlphaMaterialProxy::CAlphaMaterialProxy()
{
m_AlphaVar = NULL;
}
CAlphaMaterialProxy::~CAlphaMaterialProxy()
{
}
bool CAlphaMaterialProxy::Init( IMaterial *pMaterial, KeyValues *pKeyValues )
{
bool foundVar;
m_AlphaVar = pMaterial->FindVar( "$alpha", &foundVar, false );
return foundVar;
}
void CAlphaMaterialProxy::OnBind( C_BaseEntity *pEnt )
{
if (m_AlphaVar)
{
m_AlphaVar->SetFloatValue( pEnt->m_clrRender->a );
}
}
IMaterial *CAlphaMaterialProxy::GetMaterial()
{
if ( !m_AlphaVar )
return NULL;
return m_AlphaVar->GetOwningMaterial();
}
EXPOSE_INTERFACE( CAlphaMaterialProxy, IMaterialProxy, "Alpha" IMATERIAL_PROXY_INTERFACE_VERSION );