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diff --git a/game/shared/econ/ihasattributes.h b/game/shared/econ/ihasattributes.h
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+++ b/game/shared/econ/ihasattributes.h
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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================
+
+#ifndef IHASATTRIBUTES_H
+#define IHASATTRIBUTES_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+//#include "attribute_manager.h"
+
+class CAttributeManager;
+class CAttributeContainer;
+class CBaseEntity;
+class CAttributeList;
+
+// To allow an entity to have attributes, derive it from IHasAttributes and 
+// contain an CAttributeManager in it. Then:
+//		- Call InitializeAttributes() before your entity's Spawn()
+//		- Call AddAttribute() to add attributes to the entity
+//		- Call all the CAttributeManager hooks at the appropriate times in your entity.
+// To get networking of the attributes to work on your entity:
+//		- Add this to your entity's send table:
+//			SendPropDataTable( SENDINFO_DT( m_AttributeManager ), &REFERENCE_SEND_TABLE(DT_AttributeManager) ),
+//		- Call this inside your entity's OnDataChanged():
+//			GetAttributeManager()->OnDataChanged( updateType );
+
+//-----------------------------------------------------------------------------
+// Purpose: Derive from this if your entity wants to contain attributes.
+//-----------------------------------------------------------------------------
+class IHasAttributes
+{
+public:
+	virtual CAttributeManager	*GetAttributeManager( void ) = 0;
+	virtual CAttributeContainer	*GetAttributeContainer( void ) = 0;
+	virtual CBaseEntity			*GetAttributeOwner( void ) = 0;
+	virtual CAttributeList		*GetAttributeList( void ) = 0;
+
+	// Reapply yourself to whoever you should be providing attributes to.
+	virtual void				ReapplyProvision( void ) = 0;
+};
+
+#endif // IHASATTRIBUTES_H