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diff --git a/external/vpc/public/tier1/convar.h b/external/vpc/public/tier1/convar.h
new file mode 100644
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+++ b/external/vpc/public/tier1/convar.h
@@ -0,0 +1,975 @@
+//===== Copyright 1996-2005, Valve Corporation, All rights reserved. ======//
+//
+// Purpose: 
+//
+// $Workfile:     $
+// $Date:         $
+//
+//-----------------------------------------------------------------------------
+// $NoKeywords: $
+//===========================================================================//
+
+#ifndef CONVAR_H
+#define CONVAR_H
+
+#if _WIN32
+#pragma once
+#endif
+
+#include "tier0/dbg.h"
+#include "tier1/iconvar.h"
+#include "tier1/utlvector.h"
+#include "tier1/utlstring.h"
+#include "color.h"
+#include "icvar.h"
+
+#ifdef _WIN32
+#define FORCEINLINE_CVAR FORCEINLINE
+#elif POSIX
+#define FORCEINLINE_CVAR inline
+#elif defined(_PS3)
+#define FORCEINLINE_CVAR __attribute__((always_inline)) FORCEINLINE 
+#else
+#error "implement me"
+#endif
+
+
+//-----------------------------------------------------------------------------
+// Uncomment me to test for threading issues for material system convars
+// NOTE: You want to disable all threading when you do this
+// +host_thread_mode 0 +r_threaded_particles 0 +sv_parallel_packentities 0 +sv_disable_querycache 0
+//-----------------------------------------------------------------------------
+//#define CONVAR_TEST_MATERIAL_THREAD_CONVARS 1
+
+
+//-----------------------------------------------------------------------------
+// Forward declarations
+//-----------------------------------------------------------------------------
+class ConVar;
+class CCommand;
+class ConCommand;
+class ConCommandBase;
+struct characterset_t;
+
+
+
+//-----------------------------------------------------------------------------
+// Any executable that wants to use ConVars need to implement one of
+// these to hook up access to console variables.
+//-----------------------------------------------------------------------------
+class IConCommandBaseAccessor
+{
+public:
+	// Flags is a combination of FCVAR flags in cvar.h.
+	// hOut is filled in with a handle to the variable.
+	virtual bool RegisterConCommandBase( ConCommandBase *pVar ) = 0;
+};
+
+
+//-----------------------------------------------------------------------------
+// Helper method for console development
+//-----------------------------------------------------------------------------
+#if defined( USE_VXCONSOLE )
+void ConVar_PublishToVXConsole();
+#else
+inline void ConVar_PublishToVXConsole() {}
+#endif
+
+
+//-----------------------------------------------------------------------------
+// Called when a ConCommand needs to execute
+//-----------------------------------------------------------------------------
+typedef void ( *FnCommandCallbackV1_t )( void );
+typedef void ( *FnCommandCallback_t )( const CCommand &command );
+
+#define COMMAND_COMPLETION_MAXITEMS		64
+#define COMMAND_COMPLETION_ITEM_LENGTH	64
+
+//-----------------------------------------------------------------------------
+// Returns 0 to COMMAND_COMPLETION_MAXITEMS worth of completion strings
+//-----------------------------------------------------------------------------
+typedef int  ( *FnCommandCompletionCallback )( const char *partial, char commands[ COMMAND_COMPLETION_MAXITEMS ][ COMMAND_COMPLETION_ITEM_LENGTH ] );
+
+
+//-----------------------------------------------------------------------------
+// Interface version
+//-----------------------------------------------------------------------------
+class ICommandCallback
+{
+public:
+	virtual void CommandCallback( const CCommand &command ) = 0;
+};
+
+class ICommandCompletionCallback
+{
+public:
+	virtual int  CommandCompletionCallback( const char *pPartial, CUtlVector< CUtlString > &commands ) = 0;
+};
+
+//-----------------------------------------------------------------------------
+// Purpose: The base console invoked command/cvar interface
+//-----------------------------------------------------------------------------
+class ConCommandBase
+{
+	friend class CCvar;
+	friend class ConVar;
+	friend class ConCommand;
+	friend void ConVar_Register( int nCVarFlag, IConCommandBaseAccessor *pAccessor );
+	friend void ConVar_PublishToVXConsole();
+
+	// FIXME: Remove when ConVar changes are done
+	friend class CDefaultCvar;
+
+public:
+								ConCommandBase( void );
+								ConCommandBase( const char *pName, const char *pHelpString = 0, 
+									int flags = 0 );
+
+	virtual						~ConCommandBase( void );
+
+	virtual	bool				IsCommand( void ) const;
+
+	// Check flag
+	virtual bool				IsFlagSet( int flag ) const;
+	// Set flag
+	virtual void				AddFlags( int flags );
+	// Clear flag
+	virtual void				RemoveFlags( int flags );
+
+	virtual int					GetFlags() const;
+
+	// Return name of cvar
+	virtual const char			*GetName( void ) const;
+
+	// Return help text for cvar
+	virtual const char			*GetHelpText( void ) const;
+
+	// Deal with next pointer
+	const ConCommandBase		*GetNext( void ) const;
+	ConCommandBase				*GetNext( void );
+	
+	virtual bool				IsRegistered( void ) const;
+
+	// Returns the DLL identifier
+	virtual CVarDLLIdentifier_t	GetDLLIdentifier() const;
+
+protected:
+	virtual void				Create( const char *pName, const char *pHelpString = 0, 
+									int flags = 0 );
+
+	// Used internally by OneTimeInit to initialize/shutdown
+	virtual void				Init();
+	void						Shutdown();
+
+	// Internal copy routine ( uses new operator from correct module )
+	char						*CopyString( const char *from );
+
+private:
+	// Next ConVar in chain
+	// Prior to register, it points to the next convar in the DLL.
+	// Once registered, though, m_pNext is reset to point to the next
+	// convar in the global list
+	ConCommandBase				*m_pNext;
+
+	// Has the cvar been added to the global list?
+	bool						m_bRegistered;
+
+	// Static data
+	const char 					*m_pszName;
+	const char 					*m_pszHelpString;
+	
+	// ConVar flags
+	int							m_nFlags;
+
+protected:
+	// ConVars add themselves to this list for the executable. 
+	// Then ConVar_Register runs through  all the console variables 
+	// and registers them into a global list stored in vstdlib.dll
+	static ConCommandBase		*s_pConCommandBases;
+
+	// ConVars in this executable use this 'global' to access values.
+	static IConCommandBaseAccessor	*s_pAccessor;
+};
+
+
+//-----------------------------------------------------------------------------
+// Command tokenizer
+//-----------------------------------------------------------------------------
+class CCommand
+{
+public:
+	CCommand();
+	CCommand( int nArgC, const char **ppArgV );
+	bool Tokenize( const char *pCommand, characterset_t *pBreakSet = NULL );
+	void Reset();
+
+	int ArgC() const;
+	const char **ArgV() const;
+	const char *ArgS() const;					// All args that occur after the 0th arg, in string form
+	const char *GetCommandString() const;		// The entire command in string form, including the 0th arg
+	const char *operator[]( int nIndex ) const;	// Gets at arguments
+	const char *Arg( int nIndex ) const;		// Gets at arguments
+	
+	// Helper functions to parse arguments to commands.
+	const char* FindArg( const char *pName ) const;
+	int FindArgInt( const char *pName, int nDefaultVal ) const;
+
+	static int MaxCommandLength();
+	static characterset_t* DefaultBreakSet();
+
+private:
+	enum
+	{
+		COMMAND_MAX_ARGC = 64,
+		COMMAND_MAX_LENGTH = 512,
+	};
+
+	int		m_nArgc;
+	int		m_nArgv0Size;
+	char	m_pArgSBuffer[ COMMAND_MAX_LENGTH ];
+	char	m_pArgvBuffer[ COMMAND_MAX_LENGTH ];
+	const char*	m_ppArgv[ COMMAND_MAX_ARGC ];
+};
+
+inline int CCommand::MaxCommandLength()
+{
+	return COMMAND_MAX_LENGTH - 1;
+}
+
+inline int CCommand::ArgC() const
+{
+	return m_nArgc;
+}
+
+inline const char **CCommand::ArgV() const
+{
+	return m_nArgc ? (const char**)m_ppArgv : NULL;
+}
+
+inline const char *CCommand::ArgS() const
+{
+	return m_nArgv0Size ? &m_pArgSBuffer[m_nArgv0Size] : "";
+}
+
+inline const char *CCommand::GetCommandString() const
+{
+	return m_nArgc ? m_pArgSBuffer : "";
+}
+
+inline const char *CCommand::Arg( int nIndex ) const
+{
+	// FIXME: Many command handlers appear to not be particularly careful
+	// about checking for valid argc range. For now, we're going to
+	// do the extra check and return an empty string if it's out of range
+	if ( nIndex < 0 || nIndex >= m_nArgc )
+		return "";
+	return m_ppArgv[nIndex];
+}
+
+inline const char *CCommand::operator[]( int nIndex ) const
+{
+	return Arg( nIndex );
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: The console invoked command
+//-----------------------------------------------------------------------------
+class ConCommand : public ConCommandBase
+{
+friend class CCvar;
+
+public:
+	typedef ConCommandBase BaseClass;
+
+	ConCommand( const char *pName, FnCommandCallbackV1_t callback, 
+		const char *pHelpString = 0, int flags = 0, FnCommandCompletionCallback completionFunc = 0 );
+	ConCommand( const char *pName, FnCommandCallback_t callback, 
+		const char *pHelpString = 0, int flags = 0, FnCommandCompletionCallback completionFunc = 0 );
+	ConCommand( const char *pName, ICommandCallback *pCallback, 
+		const char *pHelpString = 0, int flags = 0, ICommandCompletionCallback *pCommandCompletionCallback = 0 );
+
+	virtual ~ConCommand( void );
+
+	virtual	bool IsCommand( void ) const;
+
+	virtual int AutoCompleteSuggest( const char *partial, CUtlVector< CUtlString > &commands );
+
+	virtual bool CanAutoComplete( void );
+
+	// Invoke the function
+	virtual void Dispatch( const CCommand &command );
+
+private:
+	// NOTE: To maintain backward compat, we have to be very careful:
+	// All public virtual methods must appear in the same order always
+	// since engine code will be calling into this code, which *does not match*
+	// in the mod code; it's using slightly different, but compatible versions
+	// of this class. Also: Be very careful about adding new fields to this class.
+	// Those fields will not exist in the version of this class that is instanced
+	// in mod code.
+
+	// Call this function when executing the command
+	union
+	{
+		FnCommandCallbackV1_t m_fnCommandCallbackV1;
+		FnCommandCallback_t m_fnCommandCallback;
+		ICommandCallback *m_pCommandCallback; 
+	};
+
+	union
+	{
+		FnCommandCompletionCallback	m_fnCompletionCallback;
+		ICommandCompletionCallback *m_pCommandCompletionCallback;
+	};
+
+	bool m_bHasCompletionCallback : 1;
+	bool m_bUsingNewCommandCallback : 1;
+	bool m_bUsingCommandCallbackInterface : 1;
+};
+
+
+//-----------------------------------------------------------------------------
+// Purpose: A console variable
+//-----------------------------------------------------------------------------
+class ConVar : public ConCommandBase, public IConVar
+{
+friend class CCvar;
+friend class ConVarRef;
+friend class SplitScreenConVarRef;
+
+public:
+	typedef ConCommandBase BaseClass;
+
+								ConVar( const char *pName, const char *pDefaultValue, int flags = 0);
+
+								ConVar( const char *pName, const char *pDefaultValue, int flags, 
+									const char *pHelpString );
+								ConVar( const char *pName, const char *pDefaultValue, int flags, 
+									const char *pHelpString, bool bMin, float fMin, bool bMax, float fMax );
+								ConVar( const char *pName, const char *pDefaultValue, int flags, 
+									const char *pHelpString, FnChangeCallback_t callback );
+								ConVar( const char *pName, const char *pDefaultValue, int flags, 
+									const char *pHelpString, bool bMin, float fMin, bool bMax, float fMax,
+									FnChangeCallback_t callback );
+
+	virtual						~ConVar( void );
+
+	virtual bool				IsFlagSet( int flag ) const;
+	virtual const char*			GetHelpText( void ) const;
+	virtual bool				IsRegistered( void ) const;
+	virtual const char			*GetName( void ) const;
+	// Return name of command (usually == GetName(), except in case of FCVAR_SS_ADDED vars
+	virtual const char			*GetBaseName( void ) const;
+	virtual int					GetSplitScreenPlayerSlot() const;
+
+	virtual void				AddFlags( int flags );
+	virtual int					GetFlags() const;
+	virtual	bool				IsCommand( void ) const;
+
+	// Install a change callback (there shouldn't already be one....)
+	void InstallChangeCallback( FnChangeCallback_t callback, bool bInvoke = true );
+	void RemoveChangeCallback( FnChangeCallback_t callbackToRemove );
+
+	int GetChangeCallbackCount() const { return m_pParent->m_fnChangeCallbacks.Count(); }
+	FnChangeCallback_t GetChangeCallback( int slot ) const { return m_pParent->m_fnChangeCallbacks[ slot ]; }
+
+	// Retrieve value
+	FORCEINLINE_CVAR float			GetFloat( void ) const;
+	FORCEINLINE_CVAR int			GetInt( void ) const;
+	FORCEINLINE_CVAR Color			GetColor( void ) const;
+	FORCEINLINE_CVAR bool			GetBool() const {  return !!GetInt(); }
+	FORCEINLINE_CVAR char const	   *GetString( void ) const;
+
+	// Compiler driven selection for template use
+	template <typename T> T Get( void ) const;
+	template <typename T> T Get( T * ) const;
+
+	// Any function that allocates/frees memory needs to be virtual or else you'll have crashes
+	//  from alloc/free across dll/exe boundaries.
+	
+	// These just call into the IConCommandBaseAccessor to check flags and set the var (which ends up calling InternalSetValue).
+	virtual void				SetValue( const char *value );
+	virtual void				SetValue( float value );
+	virtual void				SetValue( int value );
+	virtual void				SetValue( Color value );
+	
+	// Reset to default value
+	void						Revert( void );
+
+	// True if it has a min/max setting
+	bool						HasMin() const;
+	bool						HasMax() const;
+
+	bool						GetMin( float& minVal ) const;
+	bool						GetMax( float& maxVal ) const;
+
+	float						GetMinValue() const;
+	float						GetMaxValue() const;
+
+	const char					*GetDefault( void ) const;
+	void						SetDefault( const char *pszDefault );
+
+	// Value
+	struct CVValue_t
+	{
+		char						*m_pszString;
+		int							m_StringLength;
+
+		// Values
+		float						m_fValue;
+		int							m_nValue;
+	};
+
+	FORCEINLINE_CVAR CVValue_t &GetRawValue()
+	{
+		return m_Value;
+	}
+	FORCEINLINE_CVAR const CVValue_t &GetRawValue() const
+	{
+		return m_Value;
+	}
+
+private:
+	bool						InternalSetColorFromString( const char *value );
+	// Called by CCvar when the value of a var is changing.
+	virtual void				InternalSetValue(const char *value);
+	// For CVARs marked FCVAR_NEVER_AS_STRING
+	virtual void				InternalSetFloatValue( float fNewValue );
+	virtual void				InternalSetIntValue( int nValue );
+	virtual void				InternalSetColorValue( Color value );
+
+	virtual bool				ClampValue( float& value );
+	virtual void				ChangeStringValue( const char *tempVal, float flOldValue );
+
+	virtual void				Create( const char *pName, const char *pDefaultValue, int flags = 0,
+									const char *pHelpString = 0, bool bMin = false, float fMin = 0.0,
+									bool bMax = false, float fMax = false, FnChangeCallback_t callback = 0 );
+
+	// Used internally by OneTimeInit to initialize.
+	virtual void				Init();
+
+protected:
+
+	// This either points to "this" or it points to the original declaration of a ConVar.
+	// This allows ConVars to exist in separate modules, and they all use the first one to be declared.
+	// m_pParent->m_pParent must equal m_pParent (ie: m_pParent must be the root, or original, ConVar).
+	ConVar						*m_pParent;
+
+	// Static data
+	const char					*m_pszDefaultValue;
+	
+	CVValue_t					m_Value;
+
+	// Min/Max values
+	bool						m_bHasMin;
+	float						m_fMinVal;
+	bool						m_bHasMax;
+	float						m_fMaxVal;
+	
+	// Call this function when ConVar changes
+	CUtlVector< FnChangeCallback_t > m_fnChangeCallbacks;
+};
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Return ConVar value as a float
+// Output : float
+//-----------------------------------------------------------------------------
+FORCEINLINE_CVAR float ConVar::GetFloat( void ) const
+{
+#ifdef CONVAR_TEST_MATERIAL_THREAD_CONVARS
+	Assert( ThreadInMainThread() || IsFlagSet( FCVAR_MATERIAL_THREAD_MASK | FCVAR_ACCESSIBLE_FROM_THREADS ) );
+#endif
+	return m_pParent->m_Value.m_fValue;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Return ConVar value as an int
+// Output : int
+//-----------------------------------------------------------------------------
+FORCEINLINE_CVAR int ConVar::GetInt( void ) const 
+{
+#ifdef CONVAR_TEST_MATERIAL_THREAD_CONVARS
+	Assert( ThreadInMainThread() || IsFlagSet( FCVAR_MATERIAL_THREAD_MASK | FCVAR_ACCESSIBLE_FROM_THREADS ) );
+#endif
+	return m_pParent->m_Value.m_nValue;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Return ConVar value as a color
+// Output : Color
+//-----------------------------------------------------------------------------
+FORCEINLINE_CVAR Color ConVar::GetColor( void ) const 
+{
+#ifdef CONVAR_TEST_MATERIAL_THREAD_CONVARS
+	Assert( ThreadInMainThread() || IsFlagSet( FCVAR_MATERIAL_THREAD_MASK | FCVAR_ACCESSIBLE_FROM_THREADS ) );
+#endif
+	unsigned char *pColorElement = ((unsigned char *)&m_pParent->m_Value.m_nValue);
+	return Color( pColorElement[0], pColorElement[1], pColorElement[2], pColorElement[3] );
+}
+
+
+//-----------------------------------------------------------------------------
+
+template <> FORCEINLINE_CVAR float			ConVar::Get<float>( void ) const		{ return GetFloat(); }
+template <> FORCEINLINE_CVAR int			ConVar::Get<int>( void ) const			{ return GetInt(); }
+template <> FORCEINLINE_CVAR bool			ConVar::Get<bool>( void ) const			{ return GetBool(); }
+template <> FORCEINLINE_CVAR const char *	ConVar::Get<const char *>( void ) const	{ return GetString(); }
+template <> FORCEINLINE_CVAR float			ConVar::Get<float>( float *p ) const				{ return ( *p = GetFloat() ); }
+template <> FORCEINLINE_CVAR int			ConVar::Get<int>( int *p ) const					{ return ( *p = GetInt() ); }
+template <> FORCEINLINE_CVAR bool			ConVar::Get<bool>( bool *p ) const					{ return ( *p = GetBool() ); }
+template <> FORCEINLINE_CVAR const char *	ConVar::Get<const char *>( char const **p ) const	{ return ( *p = GetString() ); }
+
+//-----------------------------------------------------------------------------
+// Purpose: Return ConVar value as a string, return "" for bogus string pointer, etc.
+// Output : const char *
+//-----------------------------------------------------------------------------
+FORCEINLINE_CVAR const char *ConVar::GetString( void ) const 
+{
+#ifdef CONVAR_TEST_MATERIAL_THREAD_CONVARS
+	Assert( ThreadInMainThread() || IsFlagSet( FCVAR_MATERIAL_THREAD_MASK | FCVAR_ACCESSIBLE_FROM_THREADS ) );
+#endif
+	if ( m_nFlags & FCVAR_NEVER_AS_STRING )
+		return "FCVAR_NEVER_AS_STRING";
+	
+	char const *str = m_pParent->m_Value.m_pszString;
+	return str ? str : "";
+}
+
+class CSplitScreenAddedConVar : public ConVar
+{
+	typedef ConVar BaseClass;
+public:
+	CSplitScreenAddedConVar( int nSplitScreenSlot, const char *pName, const ConVar *pBaseVar ) :
+		BaseClass
+		( 
+			pName, 
+			pBaseVar->GetDefault(), 
+			// Keep basevar flags, except remove _SS and add _SS_ADDED instead
+			( pBaseVar->GetFlags() & ~FCVAR_SS ) | FCVAR_SS_ADDED, 
+			pBaseVar->GetHelpText(), 
+			pBaseVar->HasMin(),
+			pBaseVar->GetMinValue(),
+			pBaseVar->HasMax(),
+			pBaseVar->GetMaxValue()
+		),
+		m_pBaseVar( pBaseVar ),
+		m_nSplitScreenSlot( nSplitScreenSlot )
+	{
+		for ( int i = 0; i < pBaseVar->GetChangeCallbackCount(); ++i )
+		{
+			InstallChangeCallback( pBaseVar->GetChangeCallback( i ), false );
+		}
+		Assert( nSplitScreenSlot >= 1 );
+		Assert( nSplitScreenSlot < MAX_SPLITSCREEN_CLIENTS );
+		Assert( m_pBaseVar );
+		Assert( IsFlagSet( FCVAR_SS_ADDED ) );
+		Assert( !IsFlagSet( FCVAR_SS ) );
+	}
+
+	const ConVar *GetBaseVar() const;
+	virtual const char *GetBaseName() const;
+	void SetSplitScreenPlayerSlot( int nSlot );
+	virtual int GetSplitScreenPlayerSlot() const;
+
+protected:
+
+	const ConVar	*m_pBaseVar;
+	int		m_nSplitScreenSlot;
+};
+
+FORCEINLINE_CVAR const ConVar *CSplitScreenAddedConVar::GetBaseVar() const 
+{ 
+	Assert( m_pBaseVar );
+	return m_pBaseVar; 
+}
+
+FORCEINLINE_CVAR const char *CSplitScreenAddedConVar::GetBaseName() const 
+{ 
+	Assert( m_pBaseVar );
+	return m_pBaseVar->GetName(); 
+}
+
+FORCEINLINE_CVAR void CSplitScreenAddedConVar::SetSplitScreenPlayerSlot( int nSlot ) 
+{ 
+	m_nSplitScreenSlot = nSlot; 
+}
+
+FORCEINLINE_CVAR int CSplitScreenAddedConVar::GetSplitScreenPlayerSlot() const 
+{ 
+	return m_nSplitScreenSlot; 
+}
+
+//-----------------------------------------------------------------------------
+// Used to read/write convars that already exist (replaces the FindVar method)
+//-----------------------------------------------------------------------------
+class ConVarRef
+{
+public:
+	ConVarRef( const char *pName );
+	ConVarRef( const char *pName, bool bIgnoreMissing );
+	ConVarRef( IConVar *pConVar );
+
+	void Init( const char *pName, bool bIgnoreMissing );
+	bool IsValid() const;
+	bool IsFlagSet( int nFlags ) const;
+	IConVar *GetLinkedConVar();
+
+	// Get/Set value
+	float GetFloat( void ) const;
+	int GetInt( void ) const;
+	Color GetColor( void ) const;
+	bool GetBool() const { return !!GetInt(); }
+	const char *GetString( void ) const;
+
+	void SetValue( const char *pValue );
+	void SetValue( float flValue );
+	void SetValue( int nValue );
+	void SetValue( Color value );
+	void SetValue( bool bValue );
+
+	const char *GetName() const;
+
+	const char *GetDefault() const;
+
+	const char *GetBaseName() const;
+
+	int	GetSplitScreenPlayerSlot() const;
+
+private:
+	// High-speed method to read convar data
+	IConVar *m_pConVar;
+	ConVar *m_pConVarState;
+};
+
+
+//-----------------------------------------------------------------------------
+// Did we find an existing convar of that name?
+//-----------------------------------------------------------------------------
+FORCEINLINE_CVAR bool ConVarRef::IsFlagSet( int nFlags ) const
+{
+	return ( m_pConVar->IsFlagSet( nFlags ) != 0 );
+}
+
+FORCEINLINE_CVAR IConVar *ConVarRef::GetLinkedConVar()
+{
+	return m_pConVar;
+}
+
+FORCEINLINE_CVAR const char *ConVarRef::GetName() const
+{
+	return m_pConVar->GetName();
+}
+
+FORCEINLINE_CVAR const char *ConVarRef::GetBaseName() const
+{
+	return m_pConVar->GetBaseName();
+}
+
+FORCEINLINE_CVAR int ConVarRef::GetSplitScreenPlayerSlot() const
+{
+	return m_pConVar->GetSplitScreenPlayerSlot();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Return ConVar value as a float
+//-----------------------------------------------------------------------------
+FORCEINLINE_CVAR float ConVarRef::GetFloat( void ) const
+{
+	return m_pConVarState->m_Value.m_fValue;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Return ConVar value as an int
+//-----------------------------------------------------------------------------
+FORCEINLINE_CVAR int ConVarRef::GetInt( void ) const 
+{
+	return m_pConVarState->m_Value.m_nValue;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Return ConVar value as a color
+//-----------------------------------------------------------------------------
+FORCEINLINE_CVAR Color ConVarRef::GetColor( void ) const 
+{
+	return m_pConVarState->GetColor();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Return ConVar value as a string, return "" for bogus string pointer, etc.
+//-----------------------------------------------------------------------------
+FORCEINLINE_CVAR const char *ConVarRef::GetString( void ) const 
+{
+	Assert( !IsFlagSet( FCVAR_NEVER_AS_STRING ) );
+	return m_pConVarState->m_Value.m_pszString;
+}
+
+
+FORCEINLINE_CVAR void ConVarRef::SetValue( const char *pValue )
+{
+	m_pConVar->SetValue( pValue );
+}
+
+FORCEINLINE_CVAR void ConVarRef::SetValue( float flValue )
+{
+	m_pConVar->SetValue( flValue );
+}
+
+FORCEINLINE_CVAR void ConVarRef::SetValue( int nValue )
+{
+	m_pConVar->SetValue( nValue );
+}
+
+FORCEINLINE_CVAR void ConVarRef::SetValue( Color value )
+{
+	m_pConVar->SetValue( value );
+}
+
+FORCEINLINE_CVAR void ConVarRef::SetValue( bool bValue )
+{
+	m_pConVar->SetValue( bValue ? 1 : 0 );
+}
+
+FORCEINLINE_CVAR const char *ConVarRef::GetDefault() const
+{
+	return m_pConVarState->m_pszDefaultValue;
+}
+
+//-----------------------------------------------------------------------------
+// Helper for referencing splitscreen convars (i.e., "name" and "name2")
+//-----------------------------------------------------------------------------
+class SplitScreenConVarRef
+{
+public:
+	SplitScreenConVarRef( const char *pName );
+	SplitScreenConVarRef( const char *pName, bool bIgnoreMissing );
+	SplitScreenConVarRef( IConVar *pConVar );
+
+	void Init( const char *pName, bool bIgnoreMissing );
+	bool IsValid() const;
+	bool IsFlagSet( int nFlags ) const;
+
+	// Get/Set value
+	float GetFloat( int nSlot ) const;
+	int GetInt( int nSlot ) const;
+	Color GetColor( int nSlot ) const;
+	bool GetBool( int nSlot ) const { return !!GetInt( nSlot ); }
+	const char *GetString( int nSlot  ) const;
+
+	void SetValue( int nSlot, const char *pValue );
+	void SetValue( int nSlot, float flValue );
+	void SetValue( int nSlot, int nValue );
+	void SetValue( int nSlot, Color value );
+	void SetValue( int nSlot, bool bValue );
+
+	const char *GetName( int nSlot ) const;
+
+	const char *GetDefault() const;
+
+	const char *GetBaseName() const;
+
+private:
+	struct cv_t
+	{
+		IConVar *m_pConVar;
+		ConVar *m_pConVarState;
+	};
+
+	cv_t	m_Info[ MAX_SPLITSCREEN_CLIENTS ];
+};
+
+//-----------------------------------------------------------------------------
+// Did we find an existing convar of that name?
+//-----------------------------------------------------------------------------
+FORCEINLINE_CVAR bool SplitScreenConVarRef::IsFlagSet( int nFlags ) const
+{
+	return ( m_Info[ 0 ].m_pConVar->IsFlagSet( nFlags ) != 0 );
+}
+
+FORCEINLINE_CVAR const char *SplitScreenConVarRef::GetName( int nSlot ) const
+{
+	return m_Info[ nSlot ].m_pConVar->GetName();
+}
+
+FORCEINLINE_CVAR const char *SplitScreenConVarRef::GetBaseName() const
+{
+	return m_Info[ 0 ].m_pConVar->GetBaseName();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Return ConVar value as a float
+//-----------------------------------------------------------------------------
+FORCEINLINE_CVAR float SplitScreenConVarRef::GetFloat( int nSlot ) const
+{
+	return m_Info[ nSlot ].m_pConVarState->m_Value.m_fValue;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Return ConVar value as an int
+//-----------------------------------------------------------------------------
+FORCEINLINE_CVAR int SplitScreenConVarRef::GetInt( int nSlot ) const 
+{
+	return m_Info[ nSlot ].m_pConVarState->m_Value.m_nValue;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Return ConVar value as an int
+//-----------------------------------------------------------------------------
+FORCEINLINE_CVAR Color SplitScreenConVarRef::GetColor( int nSlot ) const 
+{
+	return m_Info[ nSlot ].m_pConVarState->GetColor();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Return ConVar value as a string, return "" for bogus string pointer, etc.
+//-----------------------------------------------------------------------------
+FORCEINLINE_CVAR const char *SplitScreenConVarRef::GetString( int nSlot ) const 
+{
+	Assert( !IsFlagSet( FCVAR_NEVER_AS_STRING ) );
+	return m_Info[ nSlot ].m_pConVarState->m_Value.m_pszString;
+}
+
+
+FORCEINLINE_CVAR void SplitScreenConVarRef::SetValue( int nSlot, const char *pValue )
+{
+	m_Info[ nSlot ].m_pConVar->SetValue( pValue );
+}
+
+FORCEINLINE_CVAR void SplitScreenConVarRef::SetValue( int nSlot, float flValue )
+{
+	m_Info[ nSlot ].m_pConVar->SetValue( flValue );
+}
+
+FORCEINLINE_CVAR void SplitScreenConVarRef::SetValue( int nSlot, int nValue )
+{
+	m_Info[ nSlot ].m_pConVar->SetValue( nValue );
+}
+
+FORCEINLINE_CVAR void SplitScreenConVarRef::SetValue( int nSlot, Color value )
+{
+	m_Info[ nSlot ].m_pConVar->SetValue( value );
+}
+
+FORCEINLINE_CVAR void SplitScreenConVarRef::SetValue( int nSlot, bool bValue )
+{
+	m_Info[ nSlot ].m_pConVar->SetValue( bValue ? 1 : 0 );
+}
+
+FORCEINLINE_CVAR const char *SplitScreenConVarRef::GetDefault() const
+{
+	return m_Info[ 0 ].m_pConVarState->m_pszDefaultValue;
+}
+
+//-----------------------------------------------------------------------------
+// Called by the framework to register ConCommands with the ICVar
+//-----------------------------------------------------------------------------
+void ConVar_Register( int nCVarFlag = 0, IConCommandBaseAccessor *pAccessor = NULL );
+void ConVar_Unregister( );
+
+
+//-----------------------------------------------------------------------------
+// Utility methods 
+//-----------------------------------------------------------------------------
+void ConVar_PrintDescription( const ConCommandBase *pVar );
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Utility class to quickly allow ConCommands to call member methods
+//-----------------------------------------------------------------------------
+#pragma warning (disable : 4355 )
+
+template< class T >
+class CConCommandMemberAccessor : public ConCommand, public ICommandCallback, public ICommandCompletionCallback
+{
+	typedef ConCommand BaseClass;
+	typedef void ( T::*FnMemberCommandCallback_t )( const CCommand &command );
+	typedef int  ( T::*FnMemberCommandCompletionCallback_t )( const char *pPartial, CUtlVector< CUtlString > &commands );
+
+public:
+	CConCommandMemberAccessor( T* pOwner, const char *pName, FnMemberCommandCallback_t callback, const char *pHelpString = 0,
+		int flags = 0, FnMemberCommandCompletionCallback_t completionFunc = 0 ) :
+		BaseClass( pName, this, pHelpString, flags, ( completionFunc != 0 ) ? this : NULL )
+	{
+		m_pOwner = pOwner;
+		m_Func = callback;
+		m_CompletionFunc = completionFunc;
+	}
+
+	~CConCommandMemberAccessor()
+	{
+		Shutdown();
+	}
+
+	void SetOwner( T* pOwner )
+	{
+		m_pOwner = pOwner;
+	}
+
+	virtual void CommandCallback( const CCommand &command )
+	{
+		Assert( m_pOwner && m_Func );
+		(m_pOwner->*m_Func)( command );
+	}
+
+	virtual int  CommandCompletionCallback( const char *pPartial, CUtlVector< CUtlString > &commands )
+	{
+		Assert( m_pOwner && m_CompletionFunc );
+		return (m_pOwner->*m_CompletionFunc)( pPartial, commands );
+	}
+
+private:
+	T* m_pOwner;
+	FnMemberCommandCallback_t m_Func;
+	FnMemberCommandCompletionCallback_t m_CompletionFunc;
+};
+
+#pragma warning ( default : 4355 )
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Utility macros to quicky generate a simple console command
+//-----------------------------------------------------------------------------
+#define CON_COMMAND( name, description ) \
+   static void name( const CCommand &args ); \
+   static ConCommand name##_command( #name, name, description ); \
+   static void name( const CCommand &args )
+
+#define CON_COMMAND_F( name, description, flags ) \
+   static void name( const CCommand &args ); \
+   static ConCommand name##_command( #name, name, description, flags ); \
+   static void name( const CCommand &args )
+
+#define CON_COMMAND_F_COMPLETION( name, description, flags, completion ) \
+	static void name( const CCommand &args ); \
+	static ConCommand name##_command( #name, name, description, flags, completion ); \
+	static void name( const CCommand &args )
+
+#define CON_COMMAND_EXTERN( name, _funcname, description ) \
+	void _funcname( const CCommand &args ); \
+	static ConCommand name##_command( #name, _funcname, description ); \
+	void _funcname( const CCommand &args )
+
+#define CON_COMMAND_EXTERN_F( name, _funcname, description, flags ) \
+	void _funcname( const CCommand &args ); \
+	static ConCommand name##_command( #name, _funcname, description, flags ); \
+	void _funcname( const CCommand &args )
+
+#define CON_COMMAND_MEMBER_F( _thisclass, name, _funcname, description, flags ) \
+	void _funcname( const CCommand &args );						\
+	friend class CCommandMemberInitializer_##_funcname;			\
+	class CCommandMemberInitializer_##_funcname					\
+	{															\
+	public:														\
+		CCommandMemberInitializer_##_funcname() : m_ConCommandAccessor( NULL, name, &_thisclass::_funcname, description, flags )	\
+		{														\
+			m_ConCommandAccessor.SetOwner( GET_OUTER( _thisclass, m_##_funcname##_register ) );	\
+		}														\
+	private:													\
+		CConCommandMemberAccessor< _thisclass > m_ConCommandAccessor;	\
+	};															\
+																\
+	CCommandMemberInitializer_##_funcname m_##_funcname##_register;		\
+
+
+#endif // CONVAR_H