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

---
 mp/src/game/client/texturescrollmaterialproxy.cpp | 127 ++++++++++++++++++++++
 1 file changed, 127 insertions(+)
 create mode 100644 mp/src/game/client/texturescrollmaterialproxy.cpp

(limited to 'mp/src/game/client/texturescrollmaterialproxy.cpp')

diff --git a/mp/src/game/client/texturescrollmaterialproxy.cpp b/mp/src/game/client/texturescrollmaterialproxy.cpp
new file mode 100644
index 00000000..9fdfef9d
--- /dev/null
+++ b/mp/src/game/client/texturescrollmaterialproxy.cpp
@@ -0,0 +1,127 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+#include "cbase.h"
+#include "materialsystem/imaterialproxy.h"
+#include "materialsystem/imaterial.h"
+#include "materialsystem/imaterialvar.h"
+#include <KeyValues.h>
+#include "mathlib/vmatrix.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 );
+
+// $textureScrollVar
+// $textureScrollRate
+// $textureScrollAngle
+class CTextureScrollMaterialProxy : public IMaterialProxy
+{
+public:
+	CTextureScrollMaterialProxy();
+	virtual ~CTextureScrollMaterialProxy();
+	virtual bool Init( IMaterial *pMaterial, KeyValues *pKeyValues );
+	virtual void OnBind( void *pC_BaseEntity );
+	virtual void Release( void ) { delete this; }
+	virtual IMaterial *GetMaterial();
+
+private:
+	IMaterialVar *m_pTextureScrollVar;
+	CFloatInput m_TextureScrollRate;
+	CFloatInput m_TextureScrollAngle;
+	CFloatInput m_TextureScale;
+};
+
+CTextureScrollMaterialProxy::CTextureScrollMaterialProxy()
+{
+	m_pTextureScrollVar = NULL;
+}
+
+CTextureScrollMaterialProxy::~CTextureScrollMaterialProxy()
+{
+}
+
+
+bool CTextureScrollMaterialProxy::Init( IMaterial *pMaterial, KeyValues *pKeyValues )
+{
+	char const* pScrollVarName = pKeyValues->GetString( "textureScrollVar" );
+	if( !pScrollVarName )
+		return false;
+
+	bool foundVar;
+	m_pTextureScrollVar = pMaterial->FindVar( pScrollVarName, &foundVar, false );
+	if( !foundVar )
+		return false;
+
+	m_TextureScrollRate.Init( pMaterial, pKeyValues, "textureScrollRate", 1.0f );
+	m_TextureScrollAngle.Init( pMaterial, pKeyValues, "textureScrollAngle", 0.0f );
+	m_TextureScale.Init( pMaterial, pKeyValues, "textureScale", 1.0f );
+
+	return true;
+}
+
+void CTextureScrollMaterialProxy::OnBind( void *pC_BaseEntity )
+{
+	if( !m_pTextureScrollVar )
+	{
+		return;
+	}
+
+	float rate, angle, scale;
+
+	// set default values if these variables don't exist.
+	rate		= m_TextureScrollRate.GetFloat();
+	angle		= m_TextureScrollAngle.GetFloat();
+	scale		= m_TextureScale.GetFloat();
+
+	float sOffset, tOffset;
+	
+	sOffset = gpGlobals->curtime * cos( angle * ( M_PI / 180.0f ) ) * rate;
+	tOffset = gpGlobals->curtime * sin( angle * ( M_PI / 180.0f ) ) * rate;
+
+	// make sure that we are positive
+	if( sOffset < 0.0f )
+	{
+		sOffset += 1.0f + -( int )sOffset;
+	}
+	if( tOffset < 0.0f )
+	{
+		tOffset += 1.0f + -( int )tOffset;
+	}
+			    
+	// make sure that we are in a [0,1] range
+	sOffset = sOffset - ( int )sOffset;
+	tOffset = tOffset - ( int )tOffset;
+	
+	if (m_pTextureScrollVar->GetType() == MATERIAL_VAR_TYPE_MATRIX)
+	{
+		VMatrix mat( scale, 0.0f, 0.0f, sOffset,
+			0.0f, scale, 0.0f, tOffset,
+			0.0f, 0.0f, 1.0f, 0.0f,
+			0.0f, 0.0f, 0.0f, 1.0f );
+		m_pTextureScrollVar->SetMatrixValue( mat );
+	}
+	else
+	{
+		m_pTextureScrollVar->SetVecValue( sOffset, tOffset, 0.0f );
+	}
+
+	if ( ToolsEnabled() )
+	{
+		ToolFramework_RecordMaterialParams( GetMaterial() );
+	}
+}
+
+IMaterial *CTextureScrollMaterialProxy::GetMaterial()
+{
+	return m_pTextureScrollVar->GetOwningMaterial();
+}
+
+EXPOSE_INTERFACE( CTextureScrollMaterialProxy, IMaterialProxy, "TextureScroll" IMATERIAL_PROXY_INTERFACE_VERSION );
-- 
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