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qzdoom/src/c_cvars.h
Randy Heit ee1806e9b2 - Fixed: You couldn't easily play with the compatibility options menu during 
the title screen, because the demo loop reset the server cvars after each
  attempt to play a demo, even though the demos never actually played. The
  proper long-term solution would be to make shadow copies of all cvars
  touched by demos and use those for the demo and the real things for
  everything else, but this should do for now and is a lot easier.


SVN r1463 (trunk)
2009-03-04 23:19:46 +00:00

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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 "doomtype.h"
#include "tarray.h"
/*
==========================================================
CVARS (console variables)
==========================================================
*/
enum
{
CVAR_ARCHIVE = 1, // set to cause it to be saved to config
CVAR_USERINFO = 2, // added to userinfo when changed
CVAR_SERVERINFO = 4, // added to serverinfo when changed
CVAR_NOSET = 8, // don't allow change from console at all,
// but can be set from the command line
CVAR_LATCH = 16, // save changes until server restart
CVAR_UNSETTABLE = 32, // can unset this var from console
CVAR_DEMOSAVE = 64, // save the value of this cvar in a demo
CVAR_ISDEFAULT = 128, // is cvar unchanged since creation?
CVAR_AUTO = 256, // allocated; needs to be freed when destroyed
CVAR_NOINITCALL = 512, // don't call callback at game start
CVAR_GLOBALCONFIG = 1024, // cvar is saved to global config section
CVAR_VIDEOCONFIG = 2048, // cvar is saved to video config section (not implemented)
CVAR_NOSAVE = 4096, // when used with CVAR_SERVERINFO, do not save var to savegame
};
union UCVarValue
{
bool Bool;
int Int;
float Float;
char *String;
const GUID *pGUID;
};
enum ECVarType
{
CVAR_Bool,
CVAR_Int,
CVAR_Float,
CVAR_String,
CVAR_Color, // stored as CVAR_Int
CVAR_Dummy, // just redirects to another cvar
CVAR_GUID
};
class FConfigFile;
class AActor;
class FBaseCVar
{
public:
FBaseCVar (const char *name, uint32 flags, void (*callback)(FBaseCVar &));
virtual ~FBaseCVar ();
inline void Callback () { if (m_Callback) m_Callback (*this); }
inline const char *GetName () const { return Name; }
inline uint32 GetFlags () const { return Flags; }
void CmdSet (const char *newval);
void ForceSet (UCVarValue value, ECVarType type);
void SetGenericRep (UCVarValue value, ECVarType type);
void ResetToDefault ();
void SetArchiveBit () { Flags |= CVAR_ARCHIVE; }
virtual ECVarType GetRealType () const = 0;
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 ResetColors (); // recalc color cvars' indices after screen change
static void ListVars (const char *filter, bool plain);
protected:
FBaseCVar () {}
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 char *ToString (UCVarValue value, ECVarType type);
static const GUID *ToGUID (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);
static UCVarValue FromGUID (const GUID &value, ECVarType type);
char *Name;
uint32 Flags;
private:
FBaseCVar (const FBaseCVar &var);
FBaseCVar (const char *name, uint32 flags);
void (*m_Callback)(FBaseCVar &);
FBaseCVar *m_Next;
static bool m_UseCallback;
static bool m_DoNoSet;
friend void C_WriteCVars (BYTE **demo_p, uint32 filter, bool compact);
friend void C_ReadCVars (BYTE **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 C_ArchiveCVars (FConfigFile *f, int type);
friend void C_SetCVarsToDefaults (void);
friend void FilterCompactCVars (TArray<FBaseCVar *> &cvars, uint32 filter);
friend void C_DeinitConsole();
};
// 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 (BYTE **demo_p, uint32 filter, bool compact=false);
// Read all cvars from *demo_p and set them appropriately.
void C_ReadCVars (BYTE **demo_p);
// 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);
// Called from G_InitNew()
void UnlatchCVars (void);
// archive cvars to FILE f
void C_ArchiveCVars (FConfigFile *f, int type);
// initialize cvars to default values after they are created
void C_SetCVarsToDefaults (void);
void FilterCompactCVars (TArray<FBaseCVar *> &cvars, uint32 filter);
void C_DeinitConsole();
class FBoolCVar : public FBaseCVar
{
public:
FBoolCVar (const char *name, bool def, uint32 flags, void (*callback)(FBoolCVar &)=NULL);
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);
bool Value;
bool DefaultValue;
};
class FIntCVar : public FBaseCVar
{
public:
FIntCVar (const char *name, int def, uint32 flags, void (*callback)(FIntCVar &)=NULL);
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
{
public:
FFloatCVar (const char *name, float def, uint32 flags, void (*callback)(FFloatCVar &)=NULL);
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);
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:
virtual void DoSet (UCVarValue value, ECVarType type);
float Value;
float DefaultValue;
};
class FStringCVar : public FBaseCVar
{
public:
FStringCVar (const char *name, const char *def, uint32 flags, void (*callback)(FStringCVar &)=NULL);
~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 Value; }
inline const char *operator *() const { return Value; }
protected:
virtual void DoSet (UCVarValue value, ECVarType type);
char *Value;
char *DefaultValue;
};
class FColorCVar : public FIntCVar
{
public:
FColorCVar (const char *name, int def, uint32 flags, void (*callback)(FColorCVar &)=NULL);
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 () const { return Value; }
inline uint32 operator *() const { return Value; }
inline int GetIndex () const { return Index; }
protected:
virtual void DoSet (UCVarValue value, ECVarType type);
static UCVarValue FromInt2 (int value, ECVarType type);
static int ToInt2 (UCVarValue value, ECVarType type);
int Index;
};
class FFlagCVar : public FBaseCVar
{
public:
FFlagCVar (const char *name, FIntCVar &realvar, uint32 bitval);
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 BitVal;
int BitNum;
};
class FGUIDCVar : public FBaseCVar
{
public:
FGUIDCVar (const char *name, const GUID *defguid, uint32 flags, void (*callback)(FGUIDCVar &)=NULL);
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 GUID &operator= (const GUID &guidval)
{ UCVarValue val; val.pGUID = &guidval; SetGenericRep (val, CVAR_GUID); return guidval; }
inline operator const GUID & () const { return Value; }
inline const GUID &operator *() const { return Value; }
protected:
virtual void DoSet (UCVarValue value, ECVarType type);
GUID Value;
GUID DefaultValue;
};
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 BYTE *value) { return cvar_set (var_name, (const char *)value); }
inline FBaseCVar *cvar_forceset (const char *var_name, const BYTE *value) { return cvar_forceset (var_name, (const char *)value); }
// Maximum number of cvars that can be saved across a demo. If you need
// to save more, bump this up.
#define MAX_DEMOCVARS 32
// 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)
#define CVAR(type,name,def,flags) \
F##type##CVar name (#name, def, flags);
#define EXTERN_CVAR(type,name) extern F##type##CVar name;
#endif //__C_CVARS_H__
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