From 39ed87570bdb2f86969d4be821c94b722dc71179 Mon Sep 17 00:00:00 2001
From: Joe Ludwig <joe@valvesoftware.com>
Date: Wed, 26 Jun 2013 15:22:04 -0700
Subject: First version of the SOurce SDK 2013

---
 sp/src/game/client/functionproxy.cpp | 259 +++++++++++++++++++++++++++++++++++
 1 file changed, 259 insertions(+)
 create mode 100644 sp/src/game/client/functionproxy.cpp

(limited to 'sp/src/game/client/functionproxy.cpp')

diff --git a/sp/src/game/client/functionproxy.cpp b/sp/src/game/client/functionproxy.cpp
new file mode 100644
index 00000000..0f773e70
--- /dev/null
+++ b/sp/src/game/client/functionproxy.cpp
@@ -0,0 +1,259 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+#include "cbase.h"
+#include "functionproxy.h"
+#include <KeyValues.h>
+#include "materialsystem/imaterialvar.h"
+#include "materialsystem/imaterial.h"
+#include "iclientrenderable.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+//-----------------------------------------------------------------------------
+// Helper class to deal with floating point inputs
+//-----------------------------------------------------------------------------
+bool CFloatInput::Init( IMaterial *pMaterial, KeyValues *pKeyValues, const char *pKeyName, float flDefault )
+{
+	m_pFloatVar = NULL;
+	KeyValues *pSection = pKeyValues->FindKey( pKeyName );
+	if (pSection)
+	{
+		if (pSection->GetDataType() == KeyValues::TYPE_STRING)
+		{
+			const char *pVarName = pSection->GetString();
+
+			// Look for numbers...
+			float flValue;
+			int nCount = sscanf( pVarName, "%f", &flValue );
+			if (nCount == 1)
+			{
+				m_flValue = flValue;
+				return true;
+			}
+
+			// Look for array specification...
+			char pTemp[256];
+			if (strchr(pVarName, '['))
+			{		 
+				// strip off the array...
+				Q_strncpy( pTemp, pVarName, 256 );
+				char *pArray = strchr( pTemp, '[' );
+				*pArray++ = 0;
+
+				char* pIEnd;
+				m_FloatVecComp = strtol( pArray, &pIEnd, 10 );
+
+				// Use the version without the array...
+				pVarName = pTemp;
+			}
+			else
+			{
+				m_FloatVecComp = -1;
+			}
+
+			bool bFoundVar;
+			m_pFloatVar = pMaterial->FindVar( pVarName, &bFoundVar, true );
+			if (!bFoundVar)
+				return false;
+		}
+		else
+		{
+			m_flValue = pSection->GetFloat();
+		}
+	}
+	else
+	{
+		m_flValue = flDefault;
+	}
+	return true;
+}
+
+float CFloatInput::GetFloat() const
+{
+	if (!m_pFloatVar)
+		return m_flValue;
+	
+	if( m_FloatVecComp < 0 )
+		return m_pFloatVar->GetFloatValue();
+
+	int iVecSize = m_pFloatVar->VectorSize();
+	if ( m_FloatVecComp >= iVecSize )
+		return 0;
+	
+	float v[4];
+	m_pFloatVar->GetVecValue( v, iVecSize );
+	return v[m_FloatVecComp];
+}
+
+
+
+//-----------------------------------------------------------------------------
+//
+// Result proxy; a result (with vector friendliness)
+//
+//-----------------------------------------------------------------------------
+
+CResultProxy::CResultProxy() : m_pResult(0)
+{
+}
+
+CResultProxy::~CResultProxy()
+{
+}
+
+
+bool CResultProxy::Init( IMaterial *pMaterial, KeyValues *pKeyValues )
+{
+	char const* pResult = pKeyValues->GetString( "resultVar" );
+	if( !pResult )
+		return false;
+
+	// Look for array specification...
+	char pTemp[256];
+	if (strchr(pResult, '['))
+	{		 
+		// strip off the array...
+		Q_strncpy( pTemp, pResult, 256 );
+		char *pArray = strchr( pTemp, '[' );
+		*pArray++ = 0;
+
+		char* pIEnd;
+		m_ResultVecComp = strtol( pArray, &pIEnd, 10 );
+
+		// Use the version without the array...
+		pResult = pTemp;
+	}
+	else
+	{
+		m_ResultVecComp = -1;
+	}
+
+	bool foundVar;
+	m_pResult = pMaterial->FindVar( pResult, &foundVar, true );
+	if( !foundVar )
+		return false;
+
+	return true;
+}
+
+
+//-----------------------------------------------------------------------------
+// A little code to allow us to set single components of vectors
+//-----------------------------------------------------------------------------
+void CResultProxy::SetFloatResult( float result )
+{
+	if (m_pResult->GetType() == MATERIAL_VAR_TYPE_VECTOR)
+	{		
+		if ( m_ResultVecComp >= 0 )
+		{
+			m_pResult->SetVecComponentValue( result, m_ResultVecComp );
+		}
+		else
+		{
+			float v[4];
+			int vecSize = m_pResult->VectorSize();
+
+			for (int i = 0; i < vecSize; ++i)
+				v[i] = result;
+
+			m_pResult->SetVecValue( v, vecSize );
+		}		
+	}
+	else
+	{
+		m_pResult->SetFloatValue( result );
+	}
+}
+
+C_BaseEntity *CResultProxy::BindArgToEntity( void *pArg )
+{
+	IClientRenderable *pRend = (IClientRenderable *)pArg;
+	return pRend ? pRend->GetIClientUnknown()->GetBaseEntity() : NULL;
+}
+
+IMaterial *CResultProxy::GetMaterial()
+{
+	return m_pResult->GetOwningMaterial();
+}
+
+
+//-----------------------------------------------------------------------------
+//
+// Base functional proxy; two sources (one is optional) and a result
+//
+//-----------------------------------------------------------------------------
+
+CFunctionProxy::CFunctionProxy() : m_pSrc1(0), m_pSrc2(0)
+{
+}
+
+CFunctionProxy::~CFunctionProxy()
+{
+}
+
+
+bool CFunctionProxy::Init( IMaterial *pMaterial, KeyValues *pKeyValues )
+{
+	if (!CResultProxy::Init( pMaterial, pKeyValues ))
+		return false;
+
+	char const* pSrcVar1 = pKeyValues->GetString( "srcVar1" );
+	if( !pSrcVar1 )
+		return false;
+
+	bool foundVar;
+	m_pSrc1 = pMaterial->FindVar( pSrcVar1, &foundVar, true );
+	if( !foundVar )
+		return false;
+
+	// Source 2 is optional, some math ops may be single-input
+	char const* pSrcVar2 = pKeyValues->GetString( "srcVar2" );
+	if( pSrcVar2 && (*pSrcVar2) )
+	{
+		m_pSrc2 = pMaterial->FindVar( pSrcVar2, &foundVar, true );
+		if( !foundVar )
+			return false;
+	}
+	else
+	{
+		m_pSrc2 = 0;
+	}
+
+	return true;
+}
+
+
+void CFunctionProxy::ComputeResultType( MaterialVarType_t& resultType, int& vecSize )
+{
+	// Feh, this is ugly. Basically, don't change the result type
+	// unless it's undefined.
+	resultType = m_pResult->GetType();
+	if (resultType == MATERIAL_VAR_TYPE_VECTOR)
+	{
+		if (m_ResultVecComp >= 0)
+			resultType = MATERIAL_VAR_TYPE_FLOAT;
+		vecSize = m_pResult->VectorSize();
+	}
+	else if (resultType == MATERIAL_VAR_TYPE_UNDEFINED)
+	{
+		resultType = m_pSrc1->GetType();
+		if (resultType == MATERIAL_VAR_TYPE_VECTOR)
+		{
+			vecSize = m_pSrc1->VectorSize();
+		}
+		else if ((resultType == MATERIAL_VAR_TYPE_UNDEFINED) && m_pSrc2)
+		{
+			resultType = m_pSrc2->GetType();
+			if (resultType == MATERIAL_VAR_TYPE_VECTOR)
+			{
+				vecSize = m_pSrc2->VectorSize();
+			}
+		}
+	}
+}
+
-- 
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