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qzdoom/src/c_cvars.cpp
Leonard2 ebe3f23677 Added GetCVar(string name) 
Works like ACS's GetCVar
2016-06-11 10:15:49 +02:00

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/*
** c_cvars.cpp
** Defines all the different console variable types
**
**---------------------------------------------------------------------------
** 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.
**---------------------------------------------------------------------------
**
*/
#include <string.h>
#include <stdio.h>
#include <assert.h>
#include "cmdlib.h"
#include "configfile.h"
#include "c_console.h"
#include "c_dispatch.h"
#include "doomstat.h"
#include "c_cvars.h"
#include "d_player.h"
#include "d_netinf.h"
#include "i_system.h"
#include "v_palette.h"
#include "v_video.h"
#include "colormatcher.h"
struct FLatchedValue
{
FBaseCVar *Variable;
UCVarValue Value;
ECVarType Type;
};
static TArray<FLatchedValue> LatchedValues;
bool FBaseCVar::m_DoNoSet = false;
bool FBaseCVar::m_UseCallback = false;
FBaseCVar *CVars = NULL;
int cvar_defflags;
FBaseCVar::FBaseCVar (const FBaseCVar &var)
{
I_FatalError ("Use of cvar copy constructor");
}
FBaseCVar::FBaseCVar (const char *var_name, DWORD flags, void (*callback)(FBaseCVar &))
{
FBaseCVar *var;
var = FindCVar (var_name, NULL);
m_Callback = callback;
Flags = 0;
Name = NULL;
if (var_name)
{
C_AddTabCommand (var_name);
Name = copystring (var_name);
m_Next = CVars;
CVars = this;
}
if (var)
{
ECVarType type;
UCVarValue value;
value = var->GetFavoriteRep (&type);
ForceSet (value, type);
if (var->Flags & CVAR_AUTO)
delete var;
else
var->~FBaseCVar();
Flags = flags;
}
else
{
Flags = flags | CVAR_ISDEFAULT;
}
}
FBaseCVar::~FBaseCVar ()
{
if (Name)
{
FBaseCVar *var, *prev;
var = FindCVar (Name, &prev);
if (var == this)
{
if (prev)
prev->m_Next = m_Next;
else
CVars = m_Next;
}
C_RemoveTabCommand(Name);
delete[] Name;
}
}
const char *FBaseCVar::GetHumanString(int precision) const
{
return GetGenericRep(CVAR_String).String;
}
void FBaseCVar::ForceSet (UCVarValue value, ECVarType type, bool nouserinfosend)
{
DoSet (value, type);
if ((Flags & CVAR_USERINFO) && !nouserinfosend && !(Flags & CVAR_IGNORE))
D_UserInfoChanged (this);
if (m_UseCallback)
Callback ();
Flags &= ~CVAR_ISDEFAULT;
}
void FBaseCVar::SetGenericRep (UCVarValue value, ECVarType type)
{
if ((Flags & CVAR_NOSET) && m_DoNoSet)
{
return;
}
else if ((Flags & CVAR_LATCH) && gamestate != GS_FULLCONSOLE && gamestate != GS_STARTUP)
{
FLatchedValue latch;
latch.Variable = this;
latch.Type = type;
if (type != CVAR_String)
latch.Value = value;
else
latch.Value.String = copystring(value.String);
LatchedValues.Push (latch);
}
else if ((Flags & CVAR_SERVERINFO) && gamestate != GS_STARTUP && !demoplayback)
{
if (netgame && !players[consoleplayer].settings_controller)
{
Printf ("Only setting controllers can change %s\n", Name);
return;
}
D_SendServerInfoChange (this, value, type);
}
else
{
ForceSet (value, type);
}
}
bool FBaseCVar::ToBool (UCVarValue value, ECVarType type)
{
switch (type)
{
case CVAR_Bool:
return value.Bool;
case CVAR_Int:
return !!value.Int;
case CVAR_Float:
return value.Float != 0.f;
case CVAR_String:
if (stricmp (value.String, "true") == 0)
return true;
else if (stricmp (value.String, "false") == 0)
return false;
else
return !!strtol (value.String, NULL, 0);
case CVAR_GUID:
return false;
default:
return false;
}
}
int FBaseCVar::ToInt (UCVarValue value, ECVarType type)
{
int res;
#if __GNUC__ <= 2
float tmp;
#endif
switch (type)
{
case CVAR_Bool: res = (int)value.Bool; break;
case CVAR_Int: res = value.Int; break;
#if __GNUC__ <= 2
case CVAR_Float: tmp = value.Float; res = (int)tmp; break;
#else
case CVAR_Float: res = (int)value.Float; break;
#endif
case CVAR_String:
{
if (stricmp (value.String, "true") == 0)
res = 1;
else if (stricmp (value.String, "false") == 0)
res = 0;
else
res = strtol (value.String, NULL, 0);
break;
}
case CVAR_GUID: res = 0; break;
default: res = 0; break;
}
return res;
}
float FBaseCVar::ToFloat (UCVarValue value, ECVarType type)
{
switch (type)
{
case CVAR_Bool:
return (float)value.Bool;
case CVAR_Int:
return (float)value.Int;
case CVAR_Float:
return value.Float;
case CVAR_String:
return (float)strtod (value.String, NULL);
case CVAR_GUID:
return 0.f;
default:
return 0.f;
}
}
static char cstrbuf[40];
static GUID cGUID;
static char truestr[] = "true";
static char falsestr[] = "false";
const char *FBaseCVar::ToString (UCVarValue value, ECVarType type)
{
switch (type)
{
case CVAR_Bool:
return value.Bool ? truestr : falsestr;
case CVAR_String:
return value.String;
case CVAR_Int:
mysnprintf (cstrbuf, countof(cstrbuf), "%i", value.Int);
break;
case CVAR_Float:
IGNORE_FORMAT_PRE
mysnprintf (cstrbuf, countof(cstrbuf), "%H", value.Float);
IGNORE_FORMAT_POST
break;
case CVAR_GUID:
FormatGUID (cstrbuf, countof(cstrbuf), *value.pGUID);
break;
default:
strcpy (cstrbuf, "<huh?>");
break;
}
return cstrbuf;
}
const GUID *FBaseCVar::ToGUID (UCVarValue value, ECVarType type)
{
UCVarValue trans;
switch (type)
{
case CVAR_String:
trans = FromString (value.String, CVAR_GUID);
return trans.pGUID;
case CVAR_GUID:
return value.pGUID;
default:
return NULL;
}
}
UCVarValue FBaseCVar::FromBool (bool value, ECVarType type)
{
UCVarValue ret;
switch (type)
{
case CVAR_Bool:
ret.Bool = value;
break;
case CVAR_Int:
ret.Int = value;
break;
case CVAR_Float:
ret.Float = value;
break;
case CVAR_String:
ret.String = value ? truestr : falsestr;
break;
case CVAR_GUID:
ret.pGUID = NULL;
break;
default:
break;
}
return ret;
}
UCVarValue FBaseCVar::FromInt (int value, ECVarType type)
{
UCVarValue ret;
switch (type)
{
case CVAR_Bool:
ret.Bool = value != 0;
break;
case CVAR_Int:
ret.Int = value;
break;
case CVAR_Float:
ret.Float = (float)value;
break;
case CVAR_String:
mysnprintf (cstrbuf, countof(cstrbuf), "%i", value);
ret.String = cstrbuf;
break;
case CVAR_GUID:
ret.pGUID = NULL;
break;
default:
break;
}
return ret;
}
UCVarValue FBaseCVar::FromFloat (float value, ECVarType type)
{
UCVarValue ret;
switch (type)
{
case CVAR_Bool:
ret.Bool = value != 0.f;
break;
case CVAR_Int:
ret.Int = (int)value;
break;
case CVAR_Float:
ret.Float = value;
break;
case CVAR_String:
IGNORE_FORMAT_PRE
mysnprintf (cstrbuf, countof(cstrbuf), "%H", value);
IGNORE_FORMAT_POST
ret.String = cstrbuf;
break;
case CVAR_GUID:
ret.pGUID = NULL;
break;
default:
break;
}
return ret;
}
static BYTE HexToByte (const char *hex)
{
BYTE v = 0;
for (int i = 0; i < 2; ++i)
{
v <<= 4;
if (hex[i] >= '0' && hex[i] <= '9')
{
v += hex[i] - '0';
}
else if (hex[i] >= 'A' && hex[i] <= 'F')
{
v += hex[i] - 'A';
}
else // The string is already verified to contain valid hexits
{
v += hex[i] - 'a';
}
}
return v;
}
UCVarValue FBaseCVar::FromString (const char *value, ECVarType type)
{
UCVarValue ret;
int i;
switch (type)
{
case CVAR_Bool:
if (stricmp (value, "true") == 0)
ret.Bool = true;
else if (stricmp (value, "false") == 0)
ret.Bool = false;
else
ret.Bool = strtol (value, NULL, 0) != 0;
break;
case CVAR_Int:
if (stricmp (value, "true") == 0)
ret.Int = 1;
else if (stricmp (value, "false") == 0)
ret.Int = 0;
else
ret.Int = strtol (value, NULL, 0);
break;
case CVAR_Float:
ret.Float = (float)strtod (value, NULL);
break;
case CVAR_String:
ret.String = const_cast<char *>(value);
break;
case CVAR_GUID:
// {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
// 01234567890123456789012345678901234567
// 0 1 2 3
ret.pGUID = NULL;
if (value == NULL)
{
break;
}
for (i = 0; value[i] != 0 && i < 38; i++)
{
switch (i)
{
case 0:
if (value[i] != '{')
break;
case 9:
case 14:
case 19:
case 24:
if (value[i] != '-')
break;
case 37:
if (value[i] != '}')
break;
default:
if (value[i] < '0' ||
(value[i] > '9' && value[i] < 'A') ||
(value[i] > 'F' && value[i] < 'a') ||
value[i] > 'f')
break;
}
}
if (i == 38 && value[i] == 0)
{
cGUID.Data1 = strtoul (value + 1, NULL, 16);
cGUID.Data2 = (WORD)strtoul (value + 10, NULL, 16);
cGUID.Data3 = (WORD)strtoul (value + 15, NULL, 16);
cGUID.Data4[0] = HexToByte (value + 20);
cGUID.Data4[1] = HexToByte (value + 22);
cGUID.Data4[2] = HexToByte (value + 25);
cGUID.Data4[3] = HexToByte (value + 27);
cGUID.Data4[4] = HexToByte (value + 29);
cGUID.Data4[5] = HexToByte (value + 31);
cGUID.Data4[6] = HexToByte (value + 33);
cGUID.Data4[7] = HexToByte (value + 35);
ret.pGUID = &cGUID;
}
break;
default:
break;
}
return ret;
}
UCVarValue FBaseCVar::FromGUID (const GUID &guid, ECVarType type)
{
UCVarValue ret;
switch (type)
{
case CVAR_Bool:
ret.Bool = false;
break;
case CVAR_Int:
ret.Int = 0;
break;
case CVAR_Float:
ret.Float = 0.f;
break;
case CVAR_String:
ret.pGUID = &guid;
ret.String = ToString (ret, CVAR_GUID);
break;
case CVAR_GUID:
ret.pGUID = &guid;
break;
default:
break;
}
return ret;
}
FBaseCVar *cvar_set (const char *var_name, const char *val)
{
FBaseCVar *var;
if ( (var = FindCVar (var_name, NULL)) )
{
UCVarValue value;
value.String = const_cast<char *>(val);
var->SetGenericRep (value, CVAR_String);
}
return var;
}
FBaseCVar *cvar_forceset (const char *var_name, const char *val)
{
FBaseCVar *var;
UCVarValue vval;
if ( (var = FindCVar (var_name, NULL)) )
{
vval.String = const_cast<char *>(val);
var->ForceSet (vval, CVAR_String);
}
return var;
}
void FBaseCVar::EnableNoSet ()
{
m_DoNoSet = true;
}
void FBaseCVar::EnableCallbacks ()
{
m_UseCallback = true;
FBaseCVar *cvar = CVars;
while (cvar)
{
if (!(cvar->Flags & CVAR_NOINITCALL))
{
cvar->Callback ();
}
cvar = cvar->m_Next;
}
}
void FBaseCVar::DisableCallbacks ()
{
m_UseCallback = false;
}
//
// Boolean cvar implementation
//
FBoolCVar::FBoolCVar (const char *name, bool def, DWORD flags, void (*callback)(FBoolCVar &))
: FBaseCVar (name, flags, reinterpret_cast<void (*)(FBaseCVar &)>(callback))
{
DefaultValue = def;
if (Flags & CVAR_ISDEFAULT)
Value = def;
}
ECVarType FBoolCVar::GetRealType () const
{
return CVAR_Bool;
}
UCVarValue FBoolCVar::GetGenericRep (ECVarType type) const
{
return FromBool (Value, type);
}
UCVarValue FBoolCVar::GetFavoriteRep (ECVarType *type) const
{
UCVarValue ret;
*type = CVAR_Bool;
ret.Bool = Value;
return ret;
}
UCVarValue FBoolCVar::GetGenericRepDefault (ECVarType type) const
{
return FromBool (DefaultValue, type);
}
UCVarValue FBoolCVar::GetFavoriteRepDefault (ECVarType *type) const
{
UCVarValue ret;
*type = CVAR_Bool;
ret.Bool = DefaultValue;
return ret;
}
void FBoolCVar::SetGenericRepDefault (UCVarValue value, ECVarType type)
{
DefaultValue = ToBool (value, type);
if (Flags & CVAR_ISDEFAULT)
{
SetGenericRep (value, type);
Flags |= CVAR_ISDEFAULT;
}
}
void FBoolCVar::DoSet (UCVarValue value, ECVarType type)
{
Value = ToBool (value, type);
}
//
// Integer cvar implementation
//
FIntCVar::FIntCVar (const char *name, int def, DWORD flags, void (*callback)(FIntCVar &))
: FBaseCVar (name, flags, reinterpret_cast<void (*)(FBaseCVar &)>(callback))
{
DefaultValue = def;
if (Flags & CVAR_ISDEFAULT)
Value = def;
}
ECVarType FIntCVar::GetRealType () const
{
return CVAR_Int;
}
UCVarValue FIntCVar::GetGenericRep (ECVarType type) const
{
return FromInt (Value, type);
}
UCVarValue FIntCVar::GetFavoriteRep (ECVarType *type) const
{
UCVarValue ret;
*type = CVAR_Int;
ret.Int = Value;
return ret;
}
UCVarValue FIntCVar::GetGenericRepDefault (ECVarType type) const
{
return FromInt (DefaultValue, type);
}
UCVarValue FIntCVar::GetFavoriteRepDefault (ECVarType *type) const
{
UCVarValue ret;
*type = CVAR_Int;
ret.Int = DefaultValue;
return ret;
}
void FIntCVar::SetGenericRepDefault (UCVarValue value, ECVarType type)
{
DefaultValue = ToInt (value, type);
if (Flags & CVAR_ISDEFAULT)
{
SetGenericRep (value, type);
Flags |= CVAR_ISDEFAULT;
}
}
void FIntCVar::DoSet (UCVarValue value, ECVarType type)
{
Value = ToInt (value, type);
}
//
// Floating point cvar implementation
//
FFloatCVar::FFloatCVar (const char *name, float def, DWORD flags, void (*callback)(FFloatCVar &))
: FBaseCVar (name, flags, reinterpret_cast<void (*)(FBaseCVar &)>(callback))
{
DefaultValue = def;
if (Flags & CVAR_ISDEFAULT)
Value = def;
}
ECVarType FFloatCVar::GetRealType () const
{
return CVAR_Float;
}
const char *FFloatCVar::GetHumanString(int precision) const
{
if (precision < 0)
{
precision = 6;
}
mysnprintf(cstrbuf, countof(cstrbuf), "%.*g", precision, Value);
return cstrbuf;
}
UCVarValue FFloatCVar::GetGenericRep (ECVarType type) const
{
return FromFloat (Value, type);
}
UCVarValue FFloatCVar::GetFavoriteRep (ECVarType *type) const
{
UCVarValue ret;
*type = CVAR_Float;
ret.Float = Value;
return ret;
}
UCVarValue FFloatCVar::GetGenericRepDefault (ECVarType type) const
{
return FromFloat (DefaultValue, type);
}
UCVarValue FFloatCVar::GetFavoriteRepDefault (ECVarType *type) const
{
UCVarValue ret;
*type = CVAR_Float;
ret.Float = DefaultValue;
return ret;
}
void FFloatCVar::SetGenericRepDefault (UCVarValue value, ECVarType type)
{
DefaultValue = ToFloat (value, type);
if (Flags & CVAR_ISDEFAULT)
{
SetGenericRep (value, type);
Flags |= CVAR_ISDEFAULT;
}
}
void FFloatCVar::DoSet (UCVarValue value, ECVarType type)
{
Value = ToFloat (value, type);
}
//
// String cvar implementation
//
FStringCVar::FStringCVar (const char *name, const char *def, DWORD flags, void (*callback)(FStringCVar &))
: FBaseCVar (name, flags, reinterpret_cast<void (*)(FBaseCVar &)>(callback))
{
DefaultValue = copystring (def);
if (Flags & CVAR_ISDEFAULT)
Value = copystring (def);
else
Value = NULL;
}
FStringCVar::~FStringCVar ()
{
if (Value != NULL)
{
delete[] Value;
}
delete[] DefaultValue;
}
ECVarType FStringCVar::GetRealType () const
{
return CVAR_String;
}
UCVarValue FStringCVar::GetGenericRep (ECVarType type) const
{
return FromString (Value, type);
}
UCVarValue FStringCVar::GetFavoriteRep (ECVarType *type) const
{
UCVarValue ret;
*type = CVAR_String;
ret.String = Value;
return ret;
}
UCVarValue FStringCVar::GetGenericRepDefault (ECVarType type) const
{
return FromString (DefaultValue, type);
}
UCVarValue FStringCVar::GetFavoriteRepDefault (ECVarType *type) const
{
UCVarValue ret;
*type = CVAR_String;
ret.String = DefaultValue;
return ret;
}
void FStringCVar::SetGenericRepDefault (UCVarValue value, ECVarType type)
{
ReplaceString(&DefaultValue, ToString(value, type));
if (Flags & CVAR_ISDEFAULT)
{
SetGenericRep (value, type);
Flags |= CVAR_ISDEFAULT;
}
}
void FStringCVar::DoSet (UCVarValue value, ECVarType type)
{
ReplaceString (&Value, ToString (value, type));
}
//
// Color cvar implementation
//
FColorCVar::FColorCVar (const char *name, int def, DWORD flags, void (*callback)(FColorCVar &))
: FIntCVar (name, def, flags, reinterpret_cast<void (*)(FIntCVar &)>(callback))
{
}
ECVarType FColorCVar::GetRealType () const
{
return CVAR_Color;
}
UCVarValue FColorCVar::GetGenericRep (ECVarType type) const
{
return FromInt2 (Value, type);
}
UCVarValue FColorCVar::GetGenericRepDefault (ECVarType type) const
{
return FromInt2 (DefaultValue, type);
}
void FColorCVar::SetGenericRepDefault (UCVarValue value, ECVarType type)
{
DefaultValue = ToInt2 (value, type);
if (Flags & CVAR_ISDEFAULT)
{
SetGenericRep (value, type);
Flags |= CVAR_ISDEFAULT;
}
}
void FColorCVar::DoSet (UCVarValue value, ECVarType type)
{
Value = ToInt2 (value, type);
if (screen)
Index = ColorMatcher.Pick (RPART(Value), GPART(Value), BPART(Value));
}
UCVarValue FColorCVar::FromInt2 (int value, ECVarType type)
{
if (type == CVAR_String)
{
UCVarValue ret;
mysnprintf (cstrbuf, countof(cstrbuf), "%02x %02x %02x",
RPART(value), GPART(value), BPART(value));
ret.String = cstrbuf;
return ret;
}
return FromInt (value, type);
}
int FColorCVar::ToInt2 (UCVarValue value, ECVarType type)
{
int ret;
if (type == CVAR_String)
{
FString string;
// Only allow named colors after the screen exists (i.e. after
// we've got some lumps loaded, so X11R6RGB can be read). Since
// the only time this might be called before that is when loading
// zdoom.ini, this shouldn't be a problem.
if (screen && !(string = V_GetColorStringByName (value.String)).IsEmpty() )
{
ret = V_GetColorFromString (NULL, string);
}
else
{
ret = V_GetColorFromString (NULL, value.String);
}
}
else
{
ret = ToInt (value, type);
}
return ret;
}
//
// GUID cvar implementation
//
FGUIDCVar::FGUIDCVar (const char *name, const GUID *def, DWORD flags, void (*callback)(FGUIDCVar &))
: FBaseCVar (name, flags, reinterpret_cast<void (*)(FBaseCVar &)>(callback))
{
if (def != NULL)
{
DefaultValue = *def;
if (Flags & CVAR_ISDEFAULT)
Value = *def;
}
else
{
memset (&Value, 0, sizeof(DefaultValue));
memset (&DefaultValue, 0, sizeof(DefaultValue));
}
}
ECVarType FGUIDCVar::GetRealType () const
{
return CVAR_GUID;
}
UCVarValue FGUIDCVar::GetGenericRep (ECVarType type) const
{
return FromGUID (Value, type);
}
UCVarValue FGUIDCVar::GetFavoriteRep (ECVarType *type) const
{
UCVarValue ret;
*type = CVAR_GUID;
ret.pGUID = &Value;
return ret;
}
UCVarValue FGUIDCVar::GetGenericRepDefault (ECVarType type) const
{
return FromGUID (DefaultValue, type);
}
UCVarValue FGUIDCVar::GetFavoriteRepDefault (ECVarType *type) const
{
UCVarValue ret;
*type = CVAR_GUID;
ret.pGUID = &DefaultValue;
return ret;
}
void FGUIDCVar::SetGenericRepDefault (UCVarValue value, ECVarType type)
{
const GUID *guid = ToGUID (value, type);
if (guid != NULL)
{
Value = *guid;
if (Flags & CVAR_ISDEFAULT)
{
SetGenericRep (value, type);
Flags |= CVAR_ISDEFAULT;
}
}
}
void FGUIDCVar::DoSet (UCVarValue value, ECVarType type)
{
const GUID *guid = ToGUID (value, type);
if (guid != NULL)
{
Value = *guid;
}
}
//
// More base cvar stuff
//
void FBaseCVar::ResetColors ()
{
FBaseCVar *var = CVars;
while (var)
{
if (var->GetRealType () == CVAR_Color)
{
var->DoSet (var->GetGenericRep (CVAR_Int), CVAR_Int);
}
var = var->m_Next;
}
}
void FBaseCVar::ResetToDefault ()
{
if (!(Flags & CVAR_ISDEFAULT))
{
UCVarValue val;
ECVarType type;
val = GetFavoriteRepDefault (&type);
SetGenericRep (val, type);
Flags |= CVAR_ISDEFAULT;
}
}
//
// Flag cvar implementation
//
// This type of cvar is not a "real" cvar. Instead, it gets and sets
// the value of a FIntCVar, modifying it bit-by-bit. As such, it has
// no default, and is not written to the .cfg or transferred around
// the network. The "host" cvar is responsible for that.
//
FFlagCVar::FFlagCVar (const char *name, FIntCVar &realvar, DWORD bitval)
: FBaseCVar (name, 0, NULL),
ValueVar (realvar),
BitVal (bitval)
{
int bit;
Flags &= ~CVAR_ISDEFAULT;
assert (bitval != 0);
bit = 0;
while ((bitval >>= 1) != 0)
{
++bit;
}
BitNum = bit;
assert ((1u << BitNum) == BitVal);
}
ECVarType FFlagCVar::GetRealType () const
{
return CVAR_Dummy;
}
UCVarValue FFlagCVar::GetGenericRep (ECVarType type) const
{
return FromBool ((ValueVar & BitVal) != 0, type);
}
UCVarValue FFlagCVar::GetFavoriteRep (ECVarType *type) const
{
UCVarValue ret;
*type = CVAR_Bool;
ret.Bool = (ValueVar & BitVal) != 0;
return ret;
}
UCVarValue FFlagCVar::GetGenericRepDefault (ECVarType type) const
{
ECVarType dummy;
UCVarValue def;
def = ValueVar.GetFavoriteRepDefault (&dummy);
return FromBool ((def.Int & BitVal) != 0, type);
}
UCVarValue FFlagCVar::GetFavoriteRepDefault (ECVarType *type) const
{
ECVarType dummy;
UCVarValue def;
def = ValueVar.GetFavoriteRepDefault (&dummy);
def.Bool = (def.Int & BitVal) != 0;
*type = CVAR_Bool;
return def;
}
void FFlagCVar::SetGenericRepDefault (UCVarValue value, ECVarType type)
{
bool newdef = ToBool (value, type);
ECVarType dummy;
UCVarValue def;
def = ValueVar.GetFavoriteRepDefault (&dummy);
if (newdef)
def.Int |= BitVal;
else
def.Int &= ~BitVal;
ValueVar.SetGenericRepDefault (def, CVAR_Int);
}
void FFlagCVar::DoSet (UCVarValue value, ECVarType type)
{
bool newval = ToBool (value, type);
// Server cvars that get changed by this need to use a special message, because
// changes are not processed until the next net update. This is a problem with
// exec scripts because all flags will base their changes off of the value of
// the "master" cvar at the time the script was run, overriding any changes
// another flag might have made to the same cvar earlier in the script.
if ((ValueVar.GetFlags() & CVAR_SERVERINFO) && gamestate != GS_STARTUP && !demoplayback)
{
if (netgame && !players[consoleplayer].settings_controller)
{
Printf ("Only setting controllers can change %s\n", Name);
return;
}
D_SendServerFlagChange (&ValueVar, BitNum, newval);
}
else
{
int val = *ValueVar;
if (newval)
val |= BitVal;
else
val &= ~BitVal;
ValueVar = val;
}
}
//
// Mask cvar implementation
//
// Similar to FFlagCVar but can have multiple bits
//
FMaskCVar::FMaskCVar (const char *name, FIntCVar &realvar, DWORD bitval)
: FBaseCVar (name, 0, NULL),
ValueVar (realvar),
BitVal (bitval)
{
int bit;
Flags &= ~CVAR_ISDEFAULT;
assert (bitval != 0);
bit = 0;
while ((bitval & 1) == 0)
{
++bit;
bitval >>= 1;
}
BitNum = bit;
}
ECVarType FMaskCVar::GetRealType () const
{
return CVAR_Dummy;
}
UCVarValue FMaskCVar::GetGenericRep (ECVarType type) const
{
return FromInt ((ValueVar & BitVal) >> BitNum, type);
}
UCVarValue FMaskCVar::GetFavoriteRep (ECVarType *type) const
{
UCVarValue ret;
*type = CVAR_Int;
ret.Int = (ValueVar & BitVal) >> BitNum;
return ret;
}
UCVarValue FMaskCVar::GetGenericRepDefault (ECVarType type) const
{
ECVarType dummy;
UCVarValue def;
def = ValueVar.GetFavoriteRepDefault (&dummy);
return FromInt ((def.Int & BitVal) >> BitNum, type);
}
UCVarValue FMaskCVar::GetFavoriteRepDefault (ECVarType *type) const
{
ECVarType dummy;
UCVarValue def;
def = ValueVar.GetFavoriteRepDefault (&dummy);
def.Int = (def.Int & BitVal) >> BitNum;
*type = CVAR_Int;
return def;
}
void FMaskCVar::SetGenericRepDefault (UCVarValue value, ECVarType type)
{
int val = ToInt(value, type) << BitNum;
ECVarType dummy;
UCVarValue def;
def = ValueVar.GetFavoriteRepDefault (&dummy);
def.Int &= ~BitVal;
def.Int |= val;
ValueVar.SetGenericRepDefault (def, CVAR_Int);
}
void FMaskCVar::DoSet (UCVarValue value, ECVarType type)
{
int val = ToInt(value, type) << BitNum;
// Server cvars that get changed by this need to use a special message, because
// changes are not processed until the next net update. This is a problem with
// exec scripts because all flags will base their changes off of the value of
// the "master" cvar at the time the script was run, overriding any changes
// another flag might have made to the same cvar earlier in the script.
if ((ValueVar.GetFlags() & CVAR_SERVERINFO) && gamestate != GS_STARTUP && !demoplayback)
{
if (netgame && !players[consoleplayer].settings_controller)
{
Printf ("Only setting controllers can change %s\n", Name);
return;
}
// Ugh...
for(int i = 0; i < 32; i++)
{
if (BitVal & (1<<i))
{
D_SendServerFlagChange (&ValueVar, i, !!(val & (1<<i)));
}
}
}
else
{
int vval = *ValueVar;
vval &= ~BitVal;
vval |= val;
ValueVar = vval;
}
}
////////////////////////////////////////////////////////////////////////
static int sortcvars (const void *a, const void *b)
{
return strcmp (((*(FBaseCVar **)a))->GetName(), ((*(FBaseCVar **)b))->GetName());
}
void FilterCompactCVars (TArray<FBaseCVar *> &cvars, DWORD filter)
{
// Accumulate all cvars that match the filter flags.
for (FBaseCVar *cvar = CVars; cvar != NULL; cvar = cvar->m_Next)
{
if ((cvar->Flags & filter) && !(cvar->Flags & CVAR_IGNORE))
cvars.Push(cvar);
}
// Now sort them, so they're in a deterministic order and not whatever
// order the linker put them in.
if (cvars.Size() > 0)
{
qsort(&cvars[0], cvars.Size(), sizeof(FBaseCVar *), sortcvars);
}
}
void C_WriteCVars (BYTE **demo_p, DWORD filter, bool compact)
{
FString dump = C_GetMassCVarString(filter, compact);
size_t dumplen = dump.Len() + 1; // include terminating \0
memcpy(*demo_p, dump.GetChars(), dumplen);
*demo_p += dumplen;
}
FString C_GetMassCVarString (DWORD filter, bool compact)
{
FBaseCVar *cvar;
FString dump;
if (compact)
{
TArray<FBaseCVar *> cvars;
dump.AppendFormat("\\\\%ux", filter);
FilterCompactCVars(cvars, filter);
while (cvars.Pop (cvar))
{
UCVarValue val = cvar->GetGenericRep(CVAR_String);
dump << '\\' << val.String;
}
}
else
{
for (cvar = CVars; cvar != NULL; cvar = cvar->m_Next)
{
if ((cvar->Flags & filter) && !(cvar->Flags & (CVAR_NOSAVE|CVAR_IGNORE)))
{
UCVarValue val = cvar->GetGenericRep(CVAR_String);
dump << '\\' << cvar->GetName() << '\\' << val.String;
}
}
}
return dump;
}
void C_ReadCVars (BYTE **demo_p)
{
char *ptr = *((char **)demo_p);
char *breakpt;
if (*ptr++ != '\\')
return;
if (*ptr == '\\')
{ // compact mode
TArray<FBaseCVar *> cvars;
FBaseCVar *cvar;
DWORD filter;
ptr++;
breakpt = strchr (ptr, '\\');
*breakpt = 0;
filter = strtoul (ptr, NULL, 16);
*breakpt = '\\';
ptr = breakpt + 1;
FilterCompactCVars (cvars, filter);
while (cvars.Pop (cvar))
{
UCVarValue val;
breakpt = strchr (ptr, '\\');
if (breakpt)
*breakpt = 0;
val.String = ptr;
cvar->ForceSet (val, CVAR_String);
if (breakpt)
{
*breakpt = '\\';
ptr = breakpt + 1;
}
else
break;
}
}
else
{
char *value;
while ( (breakpt = strchr (ptr, '\\')) )
{
*breakpt = 0;
value = breakpt + 1;
if ( (breakpt = strchr (value, '\\')) )
*breakpt = 0;
cvar_set (ptr, value);
*(value - 1) = '\\';
if (breakpt)
{
*breakpt = '\\';
ptr = breakpt + 1;
}
else
{
break;
}
}
}
*demo_p += strlen (*((char **)demo_p)) + 1;
}
struct FCVarBackup
{
FString Name, String;
};
static TArray<FCVarBackup> CVarBackups;
void C_BackupCVars (void)
{
assert(CVarBackups.Size() == 0);
CVarBackups.Clear();
FCVarBackup backup;
for (FBaseCVar *cvar = CVars; cvar != NULL; cvar = cvar->m_Next)
{
if ((cvar->Flags & (CVAR_SERVERINFO|CVAR_DEMOSAVE)) && !(cvar->Flags & CVAR_LATCH))
{
backup.Name = cvar->GetName();
backup.String = cvar->GetGenericRep(CVAR_String).String;
CVarBackups.Push(backup);
}
}
}
void C_RestoreCVars (void)
{
for (unsigned int i = 0; i < CVarBackups.Size(); ++i)
{
cvar_set(CVarBackups[i].Name, CVarBackups[i].String);
}
C_ForgetCVars();
}
void C_ForgetCVars (void)
{
CVarBackups.Clear();
}
FBaseCVar *FindCVar (const char *var_name, FBaseCVar **prev)
{
FBaseCVar *var;
FBaseCVar *dummy;
if (var_name == NULL)
return NULL;
if (prev == NULL)
prev = &dummy;
var = CVars;
*prev = NULL;
while (var)
{
if (stricmp (var->GetName (), var_name) == 0)
break;
*prev = var;
var = var->m_Next;
}
return var;
}
FBaseCVar *FindCVarSub (const char *var_name, int namelen)
{
FBaseCVar *var;
if (var_name == NULL)
return NULL;
var = CVars;
while (var)
{
const char *probename = var->GetName ();
if (strnicmp (probename, var_name, namelen) == 0 &&
probename[namelen] == 0)
{
break;
}
var = var->m_Next;
}
return var;
}
FBaseCVar *GetCVar(AActor *activator, const char *cvarname)
{
FBaseCVar *cvar = FindCVar(cvarname, nullptr);
// Either the cvar doesn't exist, or it's for a mod that isn't loaded, so return nullptr.
if (cvar == nullptr || (cvar->GetFlags() & CVAR_IGNORE))
{
return nullptr;
}
else
{
// For userinfo cvars, redirect to GetUserCVar
if (cvar->GetFlags() & CVAR_USERINFO)
{
if (activator == nullptr || activator->player == nullptr)
{
return nullptr;
}
return GetUserCVar(int(activator->player - players), cvarname);
}
return cvar;
}
}
FBaseCVar *GetUserCVar(int playernum, const char *cvarname)
{
if ((unsigned)playernum >= MAXPLAYERS || !playeringame[playernum])
{
return nullptr;
}
FBaseCVar **cvar_p = players[playernum].userinfo.CheckKey(FName(cvarname, true));
FBaseCVar *cvar;
if (cvar_p == nullptr || (cvar = *cvar_p) == nullptr || (cvar->GetFlags() & CVAR_IGNORE))
{
return nullptr;
}
return cvar;
}
//===========================================================================
//
// C_CreateCVar
//
// Create a new cvar with the specified name and type. It should not already
// exist.
//
//===========================================================================
FBaseCVar *C_CreateCVar(const char *var_name, ECVarType var_type, DWORD flags)
{
assert(FindCVar(var_name, NULL) == NULL);
flags |= CVAR_AUTO;
switch (var_type)
{
case CVAR_Bool: return new FBoolCVar(var_name, 0, flags);
case CVAR_Int: return new FIntCVar(var_name, 0, flags);
case CVAR_Float: return new FFloatCVar(var_name, 0, flags);
case CVAR_String: return new FStringCVar(var_name, NULL, flags);
case CVAR_Color: return new FColorCVar(var_name, 0, flags);
default: return NULL;
}
}
void UnlatchCVars (void)
{
FLatchedValue var;
while (LatchedValues.Pop (var))
{
DWORD oldflags = var.Variable->Flags;
var.Variable->Flags &= ~(CVAR_LATCH | CVAR_SERVERINFO);
var.Variable->SetGenericRep (var.Value, var.Type);
if (var.Type == CVAR_String)
delete[] var.Value.String;
var.Variable->Flags = oldflags;
}
}
void DestroyCVarsFlagged (DWORD flags)
{
FBaseCVar *cvar = CVars;
FBaseCVar *next = cvar;
while(cvar)
{
next = cvar->m_Next;
if(cvar->Flags & flags)
delete cvar;
cvar = next;
}
}
void C_SetCVarsToDefaults (void)
{
FBaseCVar *cvar = CVars;
while (cvar)
{
// Only default save-able cvars
if (cvar->Flags & CVAR_ARCHIVE)
{
UCVarValue val;
ECVarType type;
val = cvar->GetFavoriteRepDefault (&type);
cvar->SetGenericRep (val, type);
}
cvar = cvar->m_Next;
}
}
void C_ArchiveCVars (FConfigFile *f, uint32 filter)
{
FBaseCVar *cvar = CVars;
while (cvar)
{
if ((cvar->Flags &
(CVAR_GLOBALCONFIG|CVAR_ARCHIVE|CVAR_MOD|CVAR_AUTO|CVAR_USERINFO|CVAR_SERVERINFO|CVAR_NOSAVE))
== filter)
{
UCVarValue val;
val = cvar->GetGenericRep (CVAR_String);
f->SetValueForKey (cvar->GetName (), val.String);
}
cvar = cvar->m_Next;
}
}
void FBaseCVar::CmdSet (const char *newval)
{
UCVarValue val;
// Casting away the const is safe in this case.
val.String = const_cast<char *>(newval);
SetGenericRep (val, CVAR_String);
if (GetFlags() & CVAR_NOSET)
Printf ("%s is write protected.\n", GetName());
else if (GetFlags() & CVAR_LATCH)
Printf ("%s will be changed for next game.\n", GetName());
}
CCMD (set)
{
if (argv.argc() != 3)
{
Printf ("usage: set <variable> <value>\n");
}
else
{
FBaseCVar *var;
var = FindCVar (argv[1], NULL);
if (var == NULL)
var = new FStringCVar (argv[1], NULL, CVAR_AUTO | CVAR_UNSETTABLE | cvar_defflags);
var->CmdSet (argv[2]);
}
}
CCMD (unset)
{
if (argv.argc() != 2)
{
Printf ("usage: unset <variable>\n");
}
else
{
FBaseCVar *var = FindCVar (argv[1], NULL);
if (var != NULL)
{
if (var->GetFlags() & CVAR_UNSETTABLE)
{
delete var;
}
else
{
Printf ("Cannot unset %s\n", argv[1]);
}
}
}
}
CCMD (get)
{
FBaseCVar *var, *prev;
if (argv.argc() >= 2)
{
if ( (var = FindCVar (argv[1], &prev)) )
{
UCVarValue val;
val = var->GetGenericRep (CVAR_String);
Printf ("\"%s\" is \"%s\"\n", var->GetName(), val.String);
}
else
{
Printf ("\"%s\" is unset\n", argv[1]);
}
}
else
{
Printf ("get: need variable name\n");
}
}
CCMD (toggle)
{
FBaseCVar *var, *prev;
UCVarValue val;
if (argv.argc() > 1)
{
if ( (var = FindCVar (argv[1], &prev)) )
{
val = var->GetGenericRep (CVAR_Bool);
val.Bool = !val.Bool;
var->SetGenericRep (val, CVAR_Bool);
Printf ("\"%s\" is \"%s\"\n", var->GetName(),
val.Bool ? "true" : "false");
}
}
}
void FBaseCVar::ListVars (const char *filter, bool plain)
{
FBaseCVar *var = CVars;
int count = 0;
while (var)
{
if (CheckWildcards (filter, var->GetName()))
{
DWORD flags = var->GetFlags();
if (plain)
{ // plain formatting does not include user-defined cvars
if (!(flags & CVAR_UNSETTABLE))
{
++count;
Printf ("%s : %s\n", var->GetName(), var->GetHumanString());
}
}
else
{
++count;
Printf ("%c%c%c%c%c %s = %s\n",
flags & CVAR_ARCHIVE ? 'A' : ' ',
flags & CVAR_USERINFO ? 'U' :
flags & CVAR_SERVERINFO ? 'S' :
flags & CVAR_AUTO ? 'C' : ' ',
flags & CVAR_NOSET ? '-' :
flags & CVAR_LATCH ? 'L' :
flags & CVAR_UNSETTABLE ? '*' : ' ',
flags & CVAR_MOD ? 'M' : ' ',
flags & CVAR_IGNORE ? 'X' : ' ',
var->GetName(),
var->GetHumanString());
}
}
var = var->m_Next;
}
Printf ("%d cvars\n", count);
}
CCMD (cvarlist)
{
if (argv.argc() == 1)
{
FBaseCVar::ListVars (NULL, false);
}
else
{
FBaseCVar::ListVars (argv[1], false);
}
}
CCMD (cvarlistplain)
{
FBaseCVar::ListVars (NULL, true);
}
CCMD (archivecvar)
{
if (argv.argc() == 1)
{
Printf ("Usage: archivecvar <cvar>\n");
}
else
{
FBaseCVar *var = FindCVar (argv[1], NULL);
if (var != NULL && (var->GetFlags() & CVAR_AUTO))
{
var->SetArchiveBit ();
}
}
}
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