1 files changed, 85 insertions, 0 deletions
diff --git a/external/vpc/public/tier1/tier1.h b/external/vpc/public/tier1/tier1.h
new file mode 100644
index 0000000..c4d89c6
--- /dev/null
+++ b/external/vpc/public/tier1/tier1.h
@@ -0,0 +1,85 @@
+//===== Copyright � 2005-2005, Valve Corporation, All rights reserved. ======//
+//
+// Purpose: A higher level link library for general use in the game and tools.
+//
+//===========================================================================//
+
+
+#ifndef TIER1_H
+#define TIER1_H
+
+#if defined( _WIN32 )
+#pragma once
+#endif
+
+#include "appframework/iappsystem.h"
+#include "tier1/convar.h"
+
+//-----------------------------------------------------------------------------
+// Forward declarations
+//-----------------------------------------------------------------------------
+
+
+//-----------------------------------------------------------------------------
+// Call this to connect to/disconnect from all tier 1 libraries.
+// It's up to the caller to check the globals it cares about to see if ones are missing
+//-----------------------------------------------------------------------------
+void ConnectTier1Libraries( CreateInterfaceFn *pFactoryList, int nFactoryCount );
+void DisconnectTier1Libraries();
+
+
+//-----------------------------------------------------------------------------
+// Helper empty implementation of an IAppSystem for tier2 libraries
+//-----------------------------------------------------------------------------
+template< class IInterface, int ConVarFlag = 0 > 
+class CTier1AppSystem : public CTier0AppSystem< IInterface >
+{
+	typedef CTier0AppSystem< IInterface > BaseClass;
+
+public:
+	virtual bool Connect( CreateInterfaceFn factory ) 
+	{
+		if ( !BaseClass::Connect( factory ) )
+			return false;
+
+		ConnectTier1Libraries( &factory, 1 );
+		return true;
+	}
+
+	virtual void Disconnect() 
+	{
+		DisconnectTier1Libraries();
+		BaseClass::Disconnect();
+	}
+
+	virtual InitReturnVal_t Init()
+	{
+		InitReturnVal_t nRetVal = BaseClass::Init();
+		if ( nRetVal != INIT_OK )
+			return nRetVal;
+
+		if ( g_pCVar )
+		{
+			ConVar_Register( ConVarFlag );
+		}
+		return INIT_OK;
+	}
+
+	virtual void Shutdown()
+	{
+		if ( g_pCVar )
+		{
+			ConVar_Unregister( );
+		}
+		BaseClass::Shutdown( );
+	}
+
+	virtual AppSystemTier_t GetTier()
+	{
+		return APP_SYSTEM_TIER1;
+	}
+};
+
+
+#endif // TIER1_H
+