source-engine/game/client/ProxyHealth.cpp

//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: 
//
// $NoKeywords: $
//=============================================================================//
#include "cbase.h"
#include "functionproxy.h"
#include "toolframework_client.h"

// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"

// forward declarations
void ToolFramework_RecordMaterialParams( IMaterial *pMaterial );

//-----------------------------------------------------------------------------
// Returns the player health (from 0 to 1)
//-----------------------------------------------------------------------------
class CProxyHealth : public CResultProxy
{
public:
	bool Init( IMaterial *pMaterial, KeyValues *pKeyValues );
	void OnBind( void *pC_BaseEntity );

private:
	CFloatInput	m_Factor;
};

bool CProxyHealth::Init( IMaterial *pMaterial, KeyValues *pKeyValues )
{
	if (!CResultProxy::Init( pMaterial, pKeyValues ))
		return false;

	if (!m_Factor.Init( pMaterial, pKeyValues, "scale", 1 ))
		return false;

	return true;
}

void CProxyHealth::OnBind( void *pC_BaseEntity )
{
	if (!pC_BaseEntity)
		return;

	C_BaseEntity *pEntity = BindArgToEntity( pC_BaseEntity );

	Assert( m_pResult );
	SetFloatResult( pEntity->HealthFraction() * m_Factor.GetFloat() );

	if ( ToolsEnabled() )
	{
		ToolFramework_RecordMaterialParams( GetMaterial() );
	}
}

EXPOSE_INTERFACE( CProxyHealth, IMaterialProxy, "Health" IMATERIAL_PROXY_INTERFACE_VERSION );