/***
*
*	Copyright (c) 1996-2002, Valve LLC. All rights reserved.
*
*	This product contains software technology licensed from Id
*	Software, Inc. ("Id Technology").  Id Technology (c) 1996 Id Software, Inc.
*	All Rights Reserved.
*
*   Use, distribution, and modification of this source code and/or resulting
*   object code is restricted to non-commercial enhancements to products from
*   Valve LLC.  All other use, distribution, or modification is prohibited
*   without written permission from Valve LLC.
*
****/

#ifndef CVARDEF_H
#define CVARDEF_H

#define FCVAR_ARCHIVE			(1<<0)	// set to cause it to be saved to vars.rc
#define FCVAR_USERINFO			(1<<1)	// changes the client's info string
#define FCVAR_SERVER			(1<<2)	// notifies players when changed
#define FCVAR_EXTDLL			(1<<3)	// defined by external DLL
#define FCVAR_CLIENTDLL			(1<<4)  // defined by the client dll
#define FCVAR_PROTECTED			(1<<5)  // It's a server cvar, but we don't send the data since it's a password, etc.  Sends 1 if it's not bland/zero, 0 otherwise as value
#define FCVAR_SPONLY			(1<<6)  // This cvar cannot be changed by clients connected to a multiplayer server.
#define FCVAR_PRINTABLEONLY		(1<<7)  // This cvar's string cannot contain unprintable characters ( e.g., used for player name etc ).
#define FCVAR_UNLOGGED			(1<<8)  // If this is a FCVAR_SERVER, don't log changes to the log file / console if we are creating a log
#define FCVAR_NOEXTRAWHITEPACE	(1<<9)  // strip trailing/leading white space from this cvar
#define FCVAR_PRIVILEGED 400
#define FCVAR_FILTERABLE 800

typedef struct cvar_s
{
	const char *name;
	char	*string;
	int		flags;
	float	value;
	struct cvar_s *next;
} cvar_t;

using cvar_callback_t = void (*)(const char *pszNewValue);

struct cvar_listener_t
{
	cvar_listener_t(const char *var_name, cvar_callback_t handler) :
		func(handler), name(var_name) {}

	cvar_callback_t func;
	const char      *name;
};

typedef void (*pfnCvar_HookVariable_t) (cvar_t *pCvar);

struct cvarhook_t
{
	pfnCvar_HookVariable_t hook;

	cvar_t *cvar;
	cvarhook_t *next;
};

qboolean Cvar_HookVariable(const char *var_name, cvarhook_t *pHook);

#endif // CVARDEF_H
