1 files changed, 55 insertions, 0 deletions
diff --git a/public/tier3/tier3dm.h b/public/tier3/tier3dm.h
new file mode 100644
index 0000000..5ac6028
--- /dev/null
+++ b/public/tier3/tier3dm.h
@@ -0,0 +1,55 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: A higher level link library for general use in the game and tools.
+//
+//===========================================================================//
+
+
+#ifndef TIER3DM_H
+#define TIER3DM_H
+
+#if defined( _WIN32 )
+#pragma once
+#endif
+
+#include "tier3/tier3.h"
+#include "tier2/tier2dm.h"
+
+//-----------------------------------------------------------------------------
+// Helper empty implementation of an IAppSystem for tier2 libraries
+//-----------------------------------------------------------------------------
+template< class IInterface, int ConVarFlag = 0 > 
+class CTier3DmAppSystem : public CTier2DmAppSystem< IInterface, ConVarFlag >
+{
+	typedef CTier2DmAppSystem< IInterface, ConVarFlag > BaseClass;
+
+public:
+	CTier3DmAppSystem( bool bIsPrimaryAppSystem = true ) : BaseClass(	bIsPrimaryAppSystem )
+	{
+	}
+
+	virtual bool Connect( CreateInterfaceFn factory ) 
+	{
+		if ( !BaseClass::Connect( factory ) )
+			return false;
+
+		if ( IsPrimaryAppSystem() )
+		{
+			ConnectTier3Libraries( &factory, 1 );
+		}
+		return true;
+	}
+
+	virtual void Disconnect() 
+	{
+		if ( IsPrimaryAppSystem() )
+		{
+			DisconnectTier3Libraries();
+		}
+		BaseClass::Disconnect();
+	}
+};
+
+
+#endif // TIER3DM_H
+