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/*
* * c_cvars . h
* *
* * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
* * Copyright 1998 - 2006 Randy Heit
* * All rights reserved .
* *
* * Redistribution and use in source and binary forms , with or without
* * modification , are permitted provided that the following conditions
* * are met :
* *
* * 1. Redistributions of source code must retain the above copyright
* * notice , this list of conditions and the following disclaimer .
* * 2. Redistributions in binary form must reproduce the above copyright
* * notice , this list of conditions and the following disclaimer in the
* * documentation and / or other materials provided with the distribution .
* * 3. The name of the author may not be used to endorse or promote products
* * derived from this software without specific prior written permission .
* *
* * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ` ` AS IS ' ' AND ANY EXPRESS OR
* * IMPLIED WARRANTIES , INCLUDING , BUT NOT LIMITED TO , THE IMPLIED WARRANTIES
* * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED .
* * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT , INDIRECT ,
* * INCIDENTAL , SPECIAL , EXEMPLARY , OR CONSEQUENTIAL DAMAGES ( INCLUDING , BUT
* * NOT LIMITED TO , PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES ; LOSS OF USE ,
* * DATA , OR PROFITS ; OR BUSINESS INTERRUPTION ) HOWEVER CAUSED AND ON ANY
* * THEORY OF LIABILITY , WHETHER IN CONTRACT , STRICT LIABILITY , OR TORT
* * ( INCLUDING NEGLIGENCE OR OTHERWISE ) ARISING IN ANY WAY OUT OF THE USE OF
* * THIS SOFTWARE , EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE .
* * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
* *
*/
# ifndef __C_CVARS_H__
# define __C_CVARS_H__
# include "zstring.h"
# include "tarray.h"
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class FSerializer ; // this needs to go away.
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/*
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
CVARS ( console variables )
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
*/
enum
{
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CVAR_ARCHIVE = 1 , // set to cause it to be saved to config.
CVAR_USERINFO = 1 < < 1 , // added to userinfo when changed.
CVAR_SERVERINFO = 1 < < 2 , // added to serverinfo when changed.
CVAR_NOSET = 1 < < 3 , // don't allow change from console at all,
// but can be set from the command line.
CVAR_LATCH = 1 < < 4 , // save changes until server restart.
CVAR_UNSETTABLE = 1 < < 5 , // can unset this var from console.
CVAR_DEMOSAVE = 1 < < 6 , // save the value of this cvar in a demo.
CVAR_ISDEFAULT = 1 < < 7 , // is cvar unchanged since creation?
CVAR_AUTO = 1 < < 8 , // allocated; needs to be freed when destroyed.
CVAR_NOINITCALL = 1 < < 9 , // don't call callback at game start.
CVAR_GLOBALCONFIG = 1 < < 10 , // cvar is saved to global config section.
CVAR_VIDEOCONFIG = 1 < < 11 , // cvar is saved to video config section (not implemented).
CVAR_NOSAVE = 1 < < 12 , // when used with CVAR_SERVERINFO, do not save var to savegame
// and config.
CVAR_MOD = 1 < < 13 , // cvar was defined by a mod.
CVAR_IGNORE = 1 < < 14 , // do not send cvar across the network/inaccesible from ACS
// (dummy mod cvar).
CVAR_CHEAT = 1 < < 15 , // can be set only when sv_cheats is enabled.
CVAR_UNSAFECONTEXT = 1 < < 16 , // cvar value came from unsafe context.
CVAR_VIRTUAL = 1 < < 17 , // do not invoke the callback recursively so it can be used to
// mirror an external variable.
CVAR_CONFIG_ONLY = 1 < < 18 , // do not save var to savegame and do not send it across network.
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} ;
union UCVarValue
{
bool Bool ;
int Int ;
float Float ;
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const char * String ;
UCVarValue ( ) = default ;
UCVarValue ( bool v ) { Bool = v ; }
UCVarValue ( int v ) { Int = v ; }
UCVarValue ( float v ) { Float = v ; }
UCVarValue ( const char * v ) { String = v ; }
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} ;
enum ECVarType
{
CVAR_Bool ,
CVAR_Int ,
CVAR_Float ,
CVAR_String ,
CVAR_Color , // stored as CVAR_Int
CVAR_DummyBool , // just redirects to another cvar
CVAR_DummyInt , // just redirects to another cvar
CVAR_Dummy // Unknown
} ;
class FConfigFile ;
class FxCVar ;
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class FBaseCVar ;
// These are calls into the game code. Having these hard coded in the CVAR implementation has always been the biggest blocker
// for reusing the CVAR module outside of ZDoom. So now they get called through this struct for easier reusability.
struct ConsoleCallbacks
{
void ( * UserInfoChanged ) ( FBaseCVar * ) ;
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bool ( * SendServerInfoChange ) ( FBaseCVar * cvar , UCVarValue value , ECVarType type ) ;
bool ( * SendServerFlagChange ) ( FBaseCVar * cvar , int bitnum , bool set , bool silent ) ;
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FBaseCVar * ( * GetUserCVar ) ( int playernum , const char * cvarname ) ;
bool ( * MustLatch ) ( ) ;
} ;
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class FBaseCVar
{
public :
FBaseCVar ( const char * name , uint32_t flags , void ( * callback ) ( FBaseCVar & ) , const char * descr ) ;
virtual ~ FBaseCVar ( ) ;
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inline void Callback ( )
{
if ( m_Callback & & ! inCallback )
{
inCallback = ! ! ( Flags & CVAR_VIRTUAL ) ; // Virtual CVARs never invoke the callback recursively, giving it a chance to manipulate the value without side effects.
m_Callback ( * this ) ;
inCallback = false ;
}
}
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inline const char * GetName ( ) const { return VarName . GetChars ( ) ; }
inline uint32_t GetFlags ( ) const { return Flags ; }
inline FBaseCVar * GetNext ( ) const { return m_Next ; }
void CmdSet ( const char * newval ) ;
void ForceSet ( UCVarValue value , ECVarType type , bool nouserinfosend = false ) ;
void SetGenericRep ( UCVarValue value , ECVarType type ) ;
void ResetToDefault ( ) ;
void SetArchiveBit ( ) { Flags | = CVAR_ARCHIVE ; }
void MarkUnsafe ( ) ;
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void MarkSafe ( ) { Flags & = ~ CVAR_UNSAFECONTEXT ; }
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void AddDescription ( const FString & label )
{
if ( Description . IsEmpty ( ) ) Description = label ;
}
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int ToInt ( )
{
ECVarType vt ;
auto val = GetFavoriteRep ( & vt ) ;
return ToInt ( val , vt ) ;
}
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virtual ECVarType GetRealType ( ) const = 0 ;
virtual const char * GetHumanString ( int precision = - 1 ) const ;
virtual UCVarValue GetGenericRep ( ECVarType type ) const = 0 ;
virtual UCVarValue GetFavoriteRep ( ECVarType * type ) const = 0 ;
virtual UCVarValue GetGenericRepDefault ( ECVarType type ) const = 0 ;
virtual UCVarValue GetFavoriteRepDefault ( ECVarType * type ) const = 0 ;
virtual void SetGenericRepDefault ( UCVarValue value , ECVarType type ) = 0 ;
FBaseCVar & operator = ( const FBaseCVar & var )
{ UCVarValue val ; ECVarType type ; val = var . GetFavoriteRep ( & type ) ; SetGenericRep ( val , type ) ; return * this ; }
static void EnableNoSet ( ) ; // enable the honoring of CVAR_NOSET
static void EnableCallbacks ( ) ;
static void DisableCallbacks ( ) ;
static void ResetColors ( ) ; // recalc color cvars' indices after screen change
static void ListVars ( const char * filter , bool plain ) ;
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const FString & GetDescription ( ) const { return Description ; } ;
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protected :
virtual void DoSet ( UCVarValue value , ECVarType type ) = 0 ;
static bool ToBool ( UCVarValue value , ECVarType type ) ;
static int ToInt ( UCVarValue value , ECVarType type ) ;
static float ToFloat ( UCVarValue value , ECVarType type ) ;
static const char * ToString ( UCVarValue value , ECVarType type ) ;
static UCVarValue FromBool ( bool value , ECVarType type ) ;
static UCVarValue FromInt ( int value , ECVarType type ) ;
static UCVarValue FromFloat ( float value , ECVarType type ) ;
static UCVarValue FromString ( const char * value , ECVarType type ) ;
FString VarName ;
FString SafeValue ;
FString Description ;
uint32_t Flags ;
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bool inCallback = false ;
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private :
FBaseCVar ( const FBaseCVar & var ) = delete ;
FBaseCVar ( const char * name , uint32_t flags ) ;
void ( * m_Callback ) ( FBaseCVar & ) ;
FBaseCVar * m_Next ;
static bool m_UseCallback ;
static bool m_DoNoSet ;
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// These need to go away!
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friend FString C_GetMassCVarString ( uint32_t filter , bool compact ) ;
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friend void C_SerializeCVars ( FSerializer & arc , const char * label , uint32_t filter ) ;
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friend void C_ReadCVars ( uint8_t * * demo_p ) ;
friend void C_BackupCVars ( void ) ;
friend FBaseCVar * FindCVar ( const char * var_name , FBaseCVar * * prev ) ;
friend FBaseCVar * FindCVarSub ( const char * var_name , int namelen ) ;
friend void UnlatchCVars ( void ) ;
friend void DestroyCVarsFlagged ( uint32_t flags ) ;
friend void C_ArchiveCVars ( FConfigFile * f , uint32_t filter ) ;
friend void C_SetCVarsToDefaults ( void ) ;
friend void FilterCompactCVars ( TArray < FBaseCVar * > & cvars , uint32_t filter ) ;
friend void C_DeinitConsole ( ) ;
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friend void C_ListCVarsWithoutDescription ( ) ;
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} ;
// Returns a string with all cvars whose flags match filter. In compact mode,
// the cvar names are omitted to save space.
FString C_GetMassCVarString ( uint32_t filter , bool compact = false ) ;
// Writes all cvars that could effect demo sync to *demo_p. These are
// cvars that have either CVAR_SERVERINFO or CVAR_DEMOSAVE set.
void C_WriteCVars ( uint8_t * * demo_p , uint32_t filter , bool compact = false ) ;
// Read all cvars from *demo_p and set them appropriately.
void C_ReadCVars ( uint8_t * * demo_p ) ;
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void C_InstallHandlers ( ConsoleCallbacks * cb ) ;
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// Backup demo cvars. Called before a demo starts playing to save all
// cvars the demo might change.
void C_BackupCVars ( void ) ;
// Finds a named cvar
FBaseCVar * FindCVar ( const char * var_name , FBaseCVar * * prev ) ;
FBaseCVar * FindCVarSub ( const char * var_name , int namelen ) ;
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// Used for ACS and DECORATE.
FBaseCVar * GetCVar ( int playernum , const char * cvarname ) ;
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// Create a new cvar with the specified name and type
FBaseCVar * C_CreateCVar ( const char * var_name , ECVarType var_type , uint32_t flags ) ;
// Called from G_InitNew()
void UnlatchCVars ( void ) ;
// Destroy CVars with the matching flags; called from CCMD(restart)
void DestroyCVarsFlagged ( uint32_t flags ) ;
// archive cvars to FILE f
void C_ArchiveCVars ( FConfigFile * f , uint32_t filter ) ;
// initialize cvars to default values after they are created
void C_SetCVarsToDefaults ( void ) ;
void FilterCompactCVars ( TArray < FBaseCVar * > & cvars , uint32_t filter ) ;
void C_DeinitConsole ( ) ;
class FBoolCVar : public FBaseCVar
{
friend class FxCVar ;
public :
FBoolCVar ( const char * name , bool def , uint32_t flags , void ( * callback ) ( FBoolCVar & ) = NULL , const char * descr = nullptr ) ;
virtual ECVarType GetRealType ( ) const ;
virtual UCVarValue GetGenericRep ( ECVarType type ) const ;
virtual UCVarValue GetFavoriteRep ( ECVarType * type ) const ;
virtual UCVarValue GetGenericRepDefault ( ECVarType type ) const ;
virtual UCVarValue GetFavoriteRepDefault ( ECVarType * type ) const ;
virtual void SetGenericRepDefault ( UCVarValue value , ECVarType type ) ;
inline bool operator = ( bool boolval )
{ UCVarValue val ; val . Bool = boolval ; SetGenericRep ( val , CVAR_Bool ) ; return boolval ; }
inline operator bool ( ) const { return Value ; }
inline bool operator * ( ) const { return Value ; }
protected :
virtual void DoSet ( UCVarValue value , ECVarType type ) ;
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bool Value ;
bool DefaultValue ;
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} ;
class FIntCVar : public FBaseCVar
{
friend class FxCVar ;
public :
FIntCVar ( const char * name , int def , uint32_t flags , void ( * callback ) ( FIntCVar & ) = NULL , const char * descr = nullptr ) ;
virtual ECVarType GetRealType ( ) const ;
virtual UCVarValue GetGenericRep ( ECVarType type ) const ;
virtual UCVarValue GetFavoriteRep ( ECVarType * type ) const ;
virtual UCVarValue GetGenericRepDefault ( ECVarType type ) const ;
virtual UCVarValue GetFavoriteRepDefault ( ECVarType * type ) const ;
virtual void SetGenericRepDefault ( UCVarValue value , ECVarType type ) ;
int operator = ( int intval )
{ UCVarValue val ; val . Int = intval ; SetGenericRep ( val , CVAR_Int ) ; return intval ; }
inline operator int ( ) const { return Value ; }
inline int operator * ( ) const { return Value ; }
protected :
virtual void DoSet ( UCVarValue value , ECVarType type ) ;
int Value ;
int DefaultValue ;
friend class FFlagCVar ;
} ;
class FFloatCVar : public FBaseCVar
{
friend class FxCVar ;
public :
FFloatCVar ( const char * name , float def , uint32_t flags , void ( * callback ) ( FFloatCVar & ) = NULL , const char * descr = nullptr ) ;
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virtual ECVarType GetRealType ( ) const override ;
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virtual UCVarValue GetGenericRep ( ECVarType type ) const override ;
virtual UCVarValue GetFavoriteRep ( ECVarType * type ) const override ;
virtual UCVarValue GetGenericRepDefault ( ECVarType type ) const override ;
virtual UCVarValue GetFavoriteRepDefault ( ECVarType * type ) const override ;
virtual void SetGenericRepDefault ( UCVarValue value , ECVarType type ) override ;
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const char * GetHumanString ( int precision ) const override ;
float operator = ( float floatval )
{ UCVarValue val ; val . Float = floatval ; SetGenericRep ( val , CVAR_Float ) ; return floatval ; }
inline operator float ( ) const { return Value ; }
inline float operator * ( ) const { return Value ; }
protected :
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virtual void DoSet ( UCVarValue value , ECVarType type ) override ;
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float Value ;
float DefaultValue ;
} ;
class FStringCVar : public FBaseCVar
{
friend class FxCVar ;
public :
FStringCVar ( const char * name , const char * def , uint32_t flags , void ( * callback ) ( FStringCVar & ) = NULL , const char * descr = nullptr ) ;
~ FStringCVar ( ) ;
virtual ECVarType GetRealType ( ) const ;
virtual UCVarValue GetGenericRep ( ECVarType type ) const ;
virtual UCVarValue GetFavoriteRep ( ECVarType * type ) const ;
virtual UCVarValue GetGenericRepDefault ( ECVarType type ) const ;
virtual UCVarValue GetFavoriteRepDefault ( ECVarType * type ) const ;
virtual void SetGenericRepDefault ( UCVarValue value , ECVarType type ) ;
const char * operator = ( const char * stringrep )
{ UCVarValue val ; val . String = const_cast < char * > ( stringrep ) ; SetGenericRep ( val , CVAR_String ) ; return stringrep ; }
inline operator const char * ( ) const { return mValue ; }
inline const char * operator * ( ) const { return mValue ; }
protected :
virtual void DoSet ( UCVarValue value , ECVarType type ) ;
FString mValue ;
FString mDefaultValue ;
} ;
class FColorCVar : public FIntCVar
{
friend class FxCVar ;
public :
FColorCVar ( const char * name , int def , uint32_t flags , void ( * callback ) ( FColorCVar & ) = NULL , const char * descr = nullptr ) ;
virtual ECVarType GetRealType ( ) const ;
virtual UCVarValue GetGenericRep ( ECVarType type ) const ;
virtual UCVarValue GetGenericRepDefault ( ECVarType type ) const ;
virtual void SetGenericRepDefault ( UCVarValue value , ECVarType type ) ;
inline operator uint32_t ( ) const { return Value ; }
inline uint32_t operator * ( ) const { return Value ; }
protected :
virtual void DoSet ( UCVarValue value , ECVarType type ) ;
static UCVarValue FromInt2 ( int value , ECVarType type ) ;
static int ToInt2 ( UCVarValue value , ECVarType type ) ;
} ;
class FFlagCVar : public FBaseCVar
{
friend class FxCVar ;
public :
FFlagCVar ( const char * name , FIntCVar & realvar , uint32_t bitval , const char * descr = nullptr ) ;
virtual ECVarType GetRealType ( ) const ;
virtual UCVarValue GetGenericRep ( ECVarType type ) const ;
virtual UCVarValue GetFavoriteRep ( ECVarType * type ) const ;
virtual UCVarValue GetGenericRepDefault ( ECVarType type ) const ;
virtual UCVarValue GetFavoriteRepDefault ( ECVarType * type ) const ;
virtual void SetGenericRepDefault ( UCVarValue value , ECVarType type ) ;
bool operator = ( bool boolval )
{ UCVarValue val ; val . Bool = boolval ; SetGenericRep ( val , CVAR_Bool ) ; return boolval ; }
bool operator = ( FFlagCVar & flag )
{ UCVarValue val ; val . Bool = ! ! flag ; SetGenericRep ( val , CVAR_Bool ) ; return val . Bool ; }
inline operator int ( ) const { return ( ValueVar & BitVal ) ; }
inline int operator * ( ) const { return ( ValueVar & BitVal ) ; }
protected :
virtual void DoSet ( UCVarValue value , ECVarType type ) ;
FIntCVar & ValueVar ;
uint32_t BitVal ;
int BitNum ;
} ;
class FMaskCVar : public FBaseCVar
{
friend class FxCVar ;
public :
FMaskCVar ( const char * name , FIntCVar & realvar , uint32_t bitval , const char * descr = nullptr ) ;
virtual ECVarType GetRealType ( ) const ;
virtual UCVarValue GetGenericRep ( ECVarType type ) const ;
virtual UCVarValue GetFavoriteRep ( ECVarType * type ) const ;
virtual UCVarValue GetGenericRepDefault ( ECVarType type ) const ;
virtual UCVarValue GetFavoriteRepDefault ( ECVarType * type ) const ;
virtual void SetGenericRepDefault ( UCVarValue value , ECVarType type ) ;
inline operator int ( ) const { return ( ValueVar & BitVal ) > > BitNum ; }
inline int operator * ( ) const { return ( ValueVar & BitVal ) > > BitNum ; }
protected :
virtual void DoSet ( UCVarValue value , ECVarType type ) ;
FIntCVar & ValueVar ;
uint32_t BitVal ;
int BitNum ;
} ;
extern int cvar_defflags ;
FBaseCVar * cvar_set ( const char * var_name , const char * value ) ;
FBaseCVar * cvar_forceset ( const char * var_name , const char * value ) ;
inline FBaseCVar * cvar_set ( const char * var_name , const uint8_t * value ) { return cvar_set ( var_name , ( const char * ) value ) ; }
inline FBaseCVar * cvar_forceset ( const char * var_name , const uint8_t * value ) { return cvar_forceset ( var_name , ( const char * ) value ) ; }
// Restore demo cvars. Called after demo playback to restore all cvars
// that might possibly have been changed during the course of demo playback.
void C_RestoreCVars ( void ) ;
void C_ForgetCVars ( void ) ;
# define CUSTOM_CVAR(type,name,def,flags) \
static void cvarfunc_ # # name ( F # # type # # CVar & ) ; \
F # # type # # CVar name ( # name , def , flags , cvarfunc_ # # name ) ; \
static void cvarfunc_ # # name ( F # # type # # CVar & self )
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# define CUSTOM_CVAR_NAMED(type,name,cname,def,flags) \
static void cvarfunc_ # # name ( F # # type # # CVar & ) ; \
F # # type # # CVar name ( # cname , def , flags , cvarfunc_ # # name ) ; \
static void cvarfunc_ # # name ( F # # type # # CVar & self )
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# define CVAR(type,name,def,flags) \
F # # type # # CVar name ( # name , def , flags ) ;
# define EXTERN_CVAR(type,name) extern F##type##CVar name;
# define CUSTOM_CVARD(type,name,def,flags,descr) \
static void cvarfunc_ # # name ( F # # type # # CVar & ) ; \
F # # type # # CVar name ( # name , def , flags , cvarfunc_ # # name , descr ) ; \
static void cvarfunc_ # # name ( F # # type # # CVar & self )
# define CVARD(type,name,def,flags, descr) \
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F # # type # # CVar name ( # name , def , flags , nullptr , descr ) ;
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# define CVARD_NAMED(type,name,varname,def,flags, descr) \
F # # type # # CVar varname ( # name , def , flags , nullptr , descr ) ;
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# define CVAR_UNAMED(type,varname) \
F # # type # # CVar varname ( nullptr , 0 , 0 , nullptr , nullptr ) ;
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extern FBaseCVar * CVars ;
# endif //__C_CVARS_H__