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SRB2/src/command.c
Logan Aerl Arias 3176abe2e4 Merge branch 'cv-can-change' into 'next' 
Add can_change for console variables

See merge request STJr/SRB2!2196
2024-01-17 03:39:39 +00:00

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// SONIC ROBO BLAST 2
//-----------------------------------------------------------------------------
// Copyright (C) 1998-2000 by DooM Legacy Team.
// Copyright (C) 1999-2023 by Sonic Team Junior.
//
// This program is free software distributed under the
// terms of the GNU General Public License, version 2.
// See the 'LICENSE' file for more details.
//-----------------------------------------------------------------------------
/// \file command.c
/// \brief Parse and execute commands from console input/scripts and remote server
///
/// Handles console variables, which is a simplified version
/// of commands, each consvar can have a function called when
/// it is modified.. thus it acts nearly as commands.
///
/// code shamelessly inspired by the QuakeC sources, thanks Id :)
#include "doomdef.h"
#include "doomstat.h"
#include "command.h"
#include "console.h"
#include "z_zone.h"
#include "m_menu.h"
#include "m_misc.h"
#include "m_fixed.h"
#include "m_argv.h"
#include "byteptr.h"
#include "p_saveg.h"
#include "g_game.h" // for player_names
#include "netcode/d_netcmd.h"
#include "netcode/net_command.h"
#include "hu_stuff.h"
#include "p_setup.h"
#include "lua_script.h"
#include "netcode/d_netfil.h" // findfile
#include "r_data.h" // Color_cons_t
#include "d_main.h" // D_IsPathAllowed
//========
// protos.
//========
static boolean COM_Exists(const char *com_name);
static void COM_ExecuteString(char *com_text);
static void COM_Alias_f(void);
static void COM_Echo_f(void);
static void COM_CEcho_f(void);
static void COM_CEchoFlags_f(void);
static void COM_CEchoDuration_f(void);
static void COM_Exec_f(void);
static void COM_Wait_f(void);
static void COM_Help_f(void);
static void COM_Find_f(void);
static void COM_Toggle_f(void);
static void COM_Add_f(void);
static void CV_EnforceExecVersion(void);
static boolean CV_FilterVarByVersion(consvar_t *v, const char *valstr);
static boolean CV_Command(void);
consvar_t *CV_FindVar(const char *name);
static const char *CV_StringValue(const char *var_name);
static boolean CV_Immutable(const consvar_t *var);
static consvar_t *consvar_vars; // list of registered console variables
static UINT16 consvar_number_of_netids = 0;
#ifdef OLD22DEMOCOMPAT
static old_demo_var_t *consvar_old_demo_vars;
#endif
static char com_token[1024];
static char *COM_Parse(char *data);
static char * COM_Purge (char *text, int *lenp);
CV_PossibleValue_t CV_OnOff[] = {{0, "Off"}, {1, "On"}, {0, NULL}};
CV_PossibleValue_t CV_YesNo[] = {{0, "No"}, {1, "Yes"}, {0, NULL}};
CV_PossibleValue_t CV_Unsigned[] = {{0, "MIN"}, {999999999, "MAX"}, {0, NULL}};
CV_PossibleValue_t CV_Natural[] = {{1, "MIN"}, {999999999, "MAX"}, {0, NULL}};
CV_PossibleValue_t CV_TrueFalse[] = {{0, "False"}, {1, "True"}, {0, NULL}};
// Filter consvars by EXECVERSION
// First implementation is 26 (2.1.21), so earlier configs default at 25 (2.1.20)
// Also set CV_HIDEN during runtime, after config is loaded
static boolean execversion_enabled = false;
consvar_t cv_execversion = CVAR_INIT ("execversion","25",CV_CALL,CV_Unsigned, CV_EnforceExecVersion);
// for default joyaxis detection
static boolean joyaxis_default = false;
static boolean joyaxis2_default = false;
static INT32 joyaxis_count = 0;
static INT32 joyaxis2_count = 0;
#define COM_BUF_SIZE (32<<10) // command buffer size
#define MAX_ALIAS_RECURSION 100 // max recursion allowed for aliases
static INT32 com_wait; // one command per frame (for cmd sequences)
// command aliases
//
typedef struct cmdalias_s
{
struct cmdalias_s *next;
char *name;
char *value; // the command string to replace the alias
} cmdalias_t;
static cmdalias_t *com_alias; // aliases list
// =========================================================================
// COMMAND BUFFER
// =========================================================================
static vsbuf_t com_text; // variable sized buffer
static com_flags_t com_flags = 0;
/** Purges control characters out of some text.
*
* \param s The text.
* \param np Optionally a pointer to fill with the new string length.
* \return The text.
* \sa COM_ExecuteString
*/
static char *
COM_Purge (char *s, int *np)
{
char *t;
char *p;
int n;
n = strlen(s);
t = s + n + 1;
p = s;
while (( p = strchr(p, '\033') ))
{
memmove(p, &p[1], t - p - 1);
n--;
}
if (np)
(*np) = n;
return s;
}
/** Adds text into the command buffer for later execution.
*
* \param ptext The text to add.
* \sa COM_BufInsertTextEx
*/
void COM_BufAddTextEx(const char *ptext, com_flags_t flags)
{
int l;
char *text;
text = COM_Purge(Z_StrDup(ptext), &l);
if (com_text.cursize + 2 + l >= com_text.maxsize)
{
CONS_Alert(CONS_WARNING, M_GetText("Command buffer full!\n"));
return;
}
VS_WriteEx(&com_text, text, l, flags);
Z_Free(text);
}
/** Adds command text and executes it immediately.
*
* \param ptext The text to execute. A newline is automatically added.
* \sa COM_BufAddTextEx
*/
void COM_BufInsertTextEx(const char *ptext, com_flags_t flags)
{
const INT32 old_wait = com_wait;
char *temp = NULL;
size_t templen;
// copy off any commands still remaining in the exec buffer
templen = com_text.cursize;
if (templen)
{
temp = M_Memcpy(ZZ_Alloc(templen), com_text.data, templen);
VS_Clear(&com_text);
}
com_wait = 0;
// add the entire text of the file (or alias)
COM_BufAddTextEx(ptext, flags);
COM_BufExecute(); // do it right away
com_wait += old_wait;
// add the copied off data
if (templen)
{
VS_Write(&com_text, temp, templen);
Z_Free(temp);
}
}
/** Progress the wait timer and flush waiting console commands when ready.
*/
void
COM_BufTicker(void)
{
if (com_wait)
{
com_wait--;
return;
}
COM_BufExecute();
}
/** Flushes (executes) console commands in the buffer.
*/
void COM_BufExecute(void)
{
size_t i;
char *ptext;
char line[1024] = "";
INT32 quotes;
while (com_text.cursize)
{
// find a '\n' or; line break
ptext = (char *)com_text.data;
quotes = 0;
for (i = 0; i < com_text.cursize; i++)
{
if (ptext[i] == '\"' && !quotes && i > 0 && ptext[i-1] != ' ') // Malformed command
break;
if (ptext[i] == '\"')
quotes++;
if (!(quotes & 1) && ptext[i] == ';')
break; // don't break if inside a quoted string
if (ptext[i] == '\n' || ptext[i] == '\r')
break;
}
M_Memcpy(line, ptext, i);
line[i] = 0;
// flush the command text from the command buffer, _BEFORE_
// executing, to avoid that 'recursive' aliases overflow the
// command text buffer, in that case, new commands are inserted
// at the beginning, in place of the actual, so it doesn't
// overflow
if (i == com_text.cursize)
// the last command was just flushed
com_text.cursize = 0;
else
{
i++;
com_text.cursize -= i;
//memcpy(ptext, ptext+i, com_text.cursize); // Use memmove if the memory areas do overlap.
memmove(ptext, ptext+i, com_text.cursize);
}
// execute the command line
COM_ExecuteString(line);
// delay following commands if a wait was encountered
if (com_wait)
{
com_wait--;
break;
}
}
com_flags = 0;
}
/** Executes a string immediately. Used for skirting around WAIT commands.
*/
void COM_ImmedExecute(const char *ptext)
{
size_t i = 0, j = 0;
char line[1024] = "";
INT32 quotes;
while (i < strlen(ptext))
{
quotes = 0;
for (j = 0; i < strlen(ptext); i++,j++)
{
if (ptext[i] == '\"' && !quotes && i > 0 && ptext[i-1] != ' ') // Malformed command
return;
if (ptext[i] == '\"')
quotes++;
// don't break if inside a quoted string
if ((!(quotes & 1) && ptext[i] == ';') || ptext[i] == '\n' || ptext[i] == '\r')
break;
}
memcpy(line, ptext+(i-j), j);
line[j] = 0;
// execute the command line
COM_ExecuteString(line);
i++; // move to next character
}
}
// =========================================================================
// COMMAND EXECUTION
// =========================================================================
typedef struct xcommand_s
{
const char *name;
struct xcommand_s *next;
com_func_t function;
com_flags_t flags;
} xcommand_t;
static xcommand_t *com_commands = NULL; // current commands
#define MAX_ARGS 80
static size_t com_argc;
static char *com_argv[MAX_ARGS];
static const char *com_null_string = "";
static char *com_args = NULL; // current command args or NULL
static void Got_NetVar(UINT8 **p, INT32 playernum);
/** Initializes command buffer and adds basic commands.
*/
void COM_Init(void)
{
// allocate command buffer
VS_Alloc(&com_text, COM_BUF_SIZE);
// add standard commands
COM_AddCommand("alias", COM_Alias_f, 0);
COM_AddCommand("echo", COM_Echo_f, COM_LUA);
COM_AddCommand("cecho", COM_CEcho_f, COM_LUA);
COM_AddCommand("cechoflags", COM_CEchoFlags_f, COM_LUA);
COM_AddCommand("cechoduration", COM_CEchoDuration_f, COM_LUA);
COM_AddCommand("exec", COM_Exec_f, 0);
COM_AddCommand("wait", COM_Wait_f, 0);
COM_AddCommand("help", COM_Help_f, COM_LUA);
COM_AddCommand("find", COM_Find_f, COM_LUA);
COM_AddCommand("toggle", COM_Toggle_f, COM_LUA);
COM_AddCommand("add", COM_Add_f, COM_LUA);
RegisterNetXCmd(XD_NETVAR, Got_NetVar);
}
/** Gets a console command argument count.
*
* \return Number of arguments for the last command.
* \sa COM_Argv
*/
size_t COM_Argc(void)
{
return com_argc;
}
/** Gets a console command argument.
*
* \param arg Index of the argument (0 to COM_Argc() - 1).
* \return String pointer to the indicated argument.
* \sa COM_Argc, COM_Args
*/
const char *COM_Argv(size_t arg)
{
if (arg >= com_argc || (signed)arg < 0)
return com_null_string;
return com_argv[arg];
}
/** Gets all console command arguments.
*
* \return String pointer to all arguments for the last command.
* \sa COM_Argv
*/
char *COM_Args(void)
{
return com_args;
}
/** Checks if a parameter was passed to a console command.
*
* \param check The parameter to look for, e.g. "-noerror".
* \return The index of the argument containing the parameter,
* or 0 if the parameter was not found.
*/
size_t COM_CheckParm(const char *check)
{
size_t i;
for (i = 1; i < com_argc; i++)
if (!strcasecmp(check, com_argv[i]))
return i;
return 0;
}
/** \brief COM_CheckParm, but checks only the start of each argument.
* E.g. checking for "-no" would match "-noerror" too.
*/
size_t COM_CheckPartialParm(const char *check)
{
int len;
size_t i;
len = strlen(check);
for (i = 1; i < com_argc; i++)
{
if (strncasecmp(check, com_argv[i], len) == 0)
return i;
}
return 0;
}
/** Find the first argument that starts with a hyphen (-).
* \return The index of the argument, or 0
* if there are no such arguments.
*/
size_t COM_FirstOption(void)
{
size_t i;
for (i = 1; i < com_argc; i++)
{
if (com_argv[i][0] == '-')/* options start with a hyphen */
return i;
}
return 0;
}
/** Parses a string into command-line tokens.
*
* \param ptext A null-terminated string. Does not need to be
* newline-terminated.
*/
static void COM_TokenizeString(char *ptext)
{
size_t i;
// Clear the args from the last string.
for (i = 0; i < com_argc; i++)
Z_Free(com_argv[i]);
com_argc = 0;
com_args = NULL;
while (com_argc < MAX_ARGS)
{
// Skip whitespace up to a newline.
while (*ptext != '\0' && *ptext <= ' ' && *ptext != '\n')
{
if (ptext[0] == '\033')
{
com_flags = (unsigned)ptext[1];
ptext += 2;
}
else
ptext++;
}
// A newline means end of command in buffer,
// thus end of this command's args too.
if (*ptext == '\n' || *ptext == '\0')
break;
if (com_argc == 1)
com_args = ptext;
ptext = COM_Parse(ptext);
if (ptext == NULL)
break;
com_argv[com_argc] = Z_StrDup(com_token);
com_argc++;
}
}
/** Adds a console command.
*
* \param name Name of the command.
* \param func Function called when the command is run.
*/
void COM_AddCommand(const char *name, com_func_t func, com_flags_t flags)
{
xcommand_t *cmd;
// fail if the command is a variable name
if (CV_StringValue(name)[0] != '\0')
{
I_Error("%s is a variable name\n", name);
return;
}
// fail if the command already exists
for (cmd = com_commands; cmd; cmd = cmd->next)
{
if (!stricmp(name, cmd->name)) //case insensitive now that we have lower and uppercase!
{
// don't I_Error for Lua commands
// Lua commands can replace game commands, and they have priority.
// BUT, if for some reason we screwed up and made two console commands with the same name,
// it's good to have this here so we find out.
if (cmd->function != COM_Lua_f)
I_Error("Command %s already exists\n", name);
return;
}
}
cmd = ZZ_Alloc(sizeof *cmd);
cmd->name = name;
cmd->function = func;
cmd->flags = flags;
cmd->next = com_commands;
com_commands = cmd;
}
/** Adds a console command for Lua.
* No I_Errors allowed; return a negative code instead.
*
* \param name Name of the command.
*/
int COM_AddLuaCommand(const char *name)
{
xcommand_t *cmd;
// fail if the command is a variable name
if (CV_StringValue(name)[0] != '\0')
return -1;
// command already exists
for (cmd = com_commands; cmd; cmd = cmd->next)
{
if (!stricmp(name, cmd->name)) //case insensitive now that we have lower and uppercase!
{
// replace the built in command.
cmd->function = COM_Lua_f;
return 1;
}
}
// Add a new command.
cmd = ZZ_Alloc(sizeof *cmd);
cmd->name = name;
cmd->function = COM_Lua_f;
cmd->flags = COM_LUA;
cmd->next = com_commands;
com_commands = cmd;
return 0;
}
/** Tests if a command exists.
*
* \param com_name Name to test for.
* \return True if a command by the given name exists.
*/
static boolean COM_Exists(const char *com_name)
{
xcommand_t *cmd;
for (cmd = com_commands; cmd; cmd = cmd->next)
if (!stricmp(com_name, cmd->name))
return true;
return false;
}
/** Does command completion for the console.
*
* \param partial The partial name of the command (potentially).
* \param skips Number of commands to skip.
* \return The complete command name, or NULL.
* \sa CV_CompleteAlias, CV_CompleteVar
*/
const char *COM_CompleteCommand(const char *partial, INT32 skips)
{
xcommand_t *cmd;
size_t len;
len = strlen(partial);
if (!len)
return NULL;
// check functions
for (cmd = com_commands; cmd; cmd = cmd->next)
if (!strncmp(partial, cmd->name, len))
if (!skips--)
return cmd->name;
return NULL;
}
/** Completes the name of an alias.
*
* \param partial The partial name of the alias (potentially).
* \param skips Number of aliases to skip.
* \return The complete alias name, or NULL.
* \sa CV_CompleteCommand, CV_CompleteVar
*/
const char *COM_CompleteAlias(const char *partial, INT32 skips)
{
cmdalias_t *a;
size_t len;
len = strlen(partial);
if (!len)
return NULL;
// check functions
for (a = com_alias; a; a = a->next)
if (!strncmp(partial, a->name, len))
if (!skips--)
return a->name;
return NULL;
}
/** Parses a single line of text into arguments and tries to execute it.
* The text can come from the command buffer, a remote client, or stdin.
*
* \param ptext A single line of text.
*/
static void COM_ExecuteString(char *ptext)
{
xcommand_t *cmd;
cmdalias_t *a;
static INT32 recursion = 0; // detects recursion and stops it if it goes too far
COM_TokenizeString(ptext);
// execute the command line
if (COM_Argc() == 0)
return; // no tokens
// check functions
for (cmd = com_commands; cmd; cmd = cmd->next)
{
if (!stricmp(com_argv[0], cmd->name)) //case insensitive now that we have lower and uppercase!
{
if ((com_flags & COM_LUA) && !(cmd->flags & COM_LUA))
{
CONS_Alert(CONS_WARNING, "Command '%s' cannot be run from Lua.\n", cmd->name);
return;
}
cmd->function();
return;
}
}
// check aliases
for (a = com_alias; a; a = a->next)
{
if (!stricmp(com_argv[0], a->name))
{
if (recursion > MAX_ALIAS_RECURSION)
CONS_Alert(CONS_WARNING, M_GetText("Alias recursion cycle detected!\n"));
else
{ // Monster Iestyn: keep track of how many levels of recursion we're in
recursion++;
COM_BufInsertTextEx(a->value, com_flags);
recursion--;
}
return;
}
}
// check cvars
// Hurdler: added at Ebola's request ;)
// (don't flood the console in software mode with bad gl_xxx command)
if (!CV_Command() && (con_destlines || dedicated))
CONS_Printf(M_GetText("Unknown command '%s'\n"), COM_Argv(0));
}
// =========================================================================
// SCRIPT COMMANDS
// =========================================================================
static void print_alias(void)
{
cmdalias_t *a;
CONS_Printf("\x82""Current alias commands:\n");
for (a = com_alias; a; a = a->next)
{
CONS_Printf("%s : %s", a->name, a->value);
}
}
static void add_alias(char *newname, char *newcmd)
{
cmdalias_t *a;
// Check for existing aliases first
for (a = com_alias; a; a = a->next)
{
if (!stricmp(newname, a->name))
{
Z_Free(a->value); // Free old cmd
a->value = newcmd;
return;
}
}
// No alias found, add it instead
a = ZZ_Alloc(sizeof *a);
a->next = com_alias;
com_alias = a;
a->name = newname;
a->value = newcmd;
}
/** Creates a command name that replaces another command.
*/
static void COM_Alias_f(void)
{
char *name;
char *zcmd;
char cmd[1024];
size_t i, c;
if (COM_Argc() < 3)
{
CONS_Printf(M_GetText("alias <name> <command>: create a shortcut command that executes other command(s)\n"));
print_alias();
return;
}
name = Z_StrDup(COM_Argv(1));
// copy the rest of the command line
cmd[0] = 0; // start out with a null string
c = COM_Argc();
for (i = 2; i < c; i++)
{
strcat(cmd, COM_Argv(i));
if (i != c)
strcat(cmd, " ");
}
strcat(cmd, "\n");
zcmd = Z_StrDup(cmd);
add_alias(name, zcmd);
}
/** Prints a line of text to the console.
*/
static void COM_Echo_f(void)
{
size_t i;
for (i = 1; i < COM_Argc(); i++)
CONS_Printf("%s ", COM_Argv(i));
CONS_Printf("\n");
}
/** Displays text on the center of the screen for a short time.
*/
static void COM_CEcho_f(void)
{
size_t i;
char cechotext[1024] = "";
for (i = 1; i < COM_Argc(); i++)
{
strncat(cechotext, COM_Argv(i), sizeof(cechotext)-1);
strncat(cechotext, " ", sizeof(cechotext)-1);
}
cechotext[sizeof(cechotext) - 1] = '\0';
HU_DoCEcho(cechotext);
}
/** Sets drawing flags for the CECHO command.
*/
static void COM_CEchoFlags_f(void)
{
if (COM_Argc() > 1)
{
const char *arg = COM_Argv(1);
if (arg[0] && arg[0] == '0' &&
arg[1] && arg[1] == 'x') // Use hexadecimal!
HU_SetCEchoFlags(axtoi(arg+2));
else
HU_SetCEchoFlags(atoi(arg));
}
else
CONS_Printf(M_GetText("cechoflags <flags>: set CEcho flags, prepend with 0x to use hexadecimal\n"));
}
/** Sets the duration for CECHO commands to stay on the screen
*/
static void COM_CEchoDuration_f(void)
{
if (COM_Argc() > 1)
HU_SetCEchoDuration(atoi(COM_Argv(1)));
}
/** Executes a script file.
*/
static void COM_Exec_f(void)
{
UINT8 *buf = NULL;
char filename[256];
if (COM_Argc() < 2 || COM_Argc() > 3)
{
CONS_Printf(M_GetText("exec <filename>: run a script file\n"));
return;
}
if (!D_CheckPathAllowed(COM_Argv(1), "tried to exec"))
return;
// load file
// Try with Argv passed verbatim first, for back compat
FIL_ReadFile(COM_Argv(1), &buf);
if (!buf)
{
// Now try by searching the file path
// filename is modified with the full found path
strcpy(filename, COM_Argv(1));
if (findfile(filename, NULL, true) != FS_NOTFOUND)
FIL_ReadFile(filename, &buf);
if (!buf)
{
if (!COM_CheckParm("-noerror"))
CONS_Printf(M_GetText("couldn't execute file %s\n"), COM_Argv(1));
return;
}
}
if (!COM_CheckParm("-silent"))
CONS_Printf(M_GetText("executing %s\n"), COM_Argv(1));
// insert text file into the command buffer
COM_BufAddTextEx((char *)buf, com_flags);
COM_BufAddTextEx("\n", com_flags);
// free buffer
Z_Free(buf);
}
/** Delays execution of the rest of the commands until the next frame.
* Allows sequences of commands like "jump; fire; backward".
*/
static void COM_Wait_f(void)
{
if (COM_Argc() > 1)
com_wait = atoi(COM_Argv(1));
else
com_wait = 1; // 1 frame
}
/** Prints help on variables and commands.
*/
static void COM_Help_f(void)
{
xcommand_t *cmd;
consvar_t *cvar;
INT32 i = 0;
if (COM_Argc() > 1)
{
const char *help = COM_Argv(1);
cvar = CV_FindVar(help);
if (cvar)
{
boolean floatmode = false;
const char *cvalue = NULL;
CONS_Printf("\x82""Variable %s:\n", cvar->name);
CONS_Printf(M_GetText(" flags: "));
if (cvar->flags & CV_SAVE)
CONS_Printf("AUTOSAVE ");
if (cvar->flags & CV_FLOAT)
{
CONS_Printf("FLOAT ");
floatmode = true;
}
if (cvar->flags & CV_NETVAR)
CONS_Printf("NETVAR ");
if (cvar->flags & CV_CALL)
CONS_Printf("ACTION ");
if (cvar->flags & CV_CHEAT)
CONS_Printf("CHEAT ");
CONS_Printf("\n");
if (cvar->PossibleValue)
{
CONS_Printf(" Possible values:\n");
if (cvar->PossibleValue == CV_YesNo)
CONS_Printf(" Yes or No (On or Off, True or False, 1 or 0)\n");
else if (cvar->PossibleValue == CV_OnOff)
CONS_Printf(" On or Off (Yes or No, True or False, 1 or 0)\n");
else if (cvar->PossibleValue == CV_TrueFalse)
CONS_Printf(" True or False (On or Off, Yes or No, 1 or 0)\n");
else if (cvar->PossibleValue == Color_cons_t)
{
for (i = 1; i < numskincolors; ++i)
{
if (skincolors[i].accessible)
{
CONS_Printf(" %-2d : %s\n", i, skincolors[i].name);
if (i == cvar->value)
cvalue = skincolors[i].name;
}
}
}
else
{
#define MINVAL 0
#define MAXVAL 1
if (!stricmp(cvar->PossibleValue[MINVAL].strvalue, "MIN"))
{
if (floatmode)
{
float fu = FIXED_TO_FLOAT(cvar->PossibleValue[MINVAL].value);
float ck = FIXED_TO_FLOAT(cvar->PossibleValue[MAXVAL].value);
CONS_Printf(" range from %ld%s to %ld%s\n",
(long)fu, M_Ftrim(fu),
(long)ck, M_Ftrim(ck));
}
else
CONS_Printf(" range from %d to %d\n", cvar->PossibleValue[MINVAL].value,
cvar->PossibleValue[MAXVAL].value);
i = MAXVAL+1;
}
#undef MINVAL
#undef MAXVAL
//CONS_Printf(M_GetText(" possible value : %s\n"), cvar->name);
while (cvar->PossibleValue[i].strvalue)
{
if (floatmode)
CONS_Printf(" %-2f : %s\n", FIXED_TO_FLOAT(cvar->PossibleValue[i].value),
cvar->PossibleValue[i].strvalue);
else
CONS_Printf(" %-2d : %s\n", cvar->PossibleValue[i].value,
cvar->PossibleValue[i].strvalue);
if (cvar->PossibleValue[i].value == cvar->value)
cvalue = cvar->PossibleValue[i].strvalue;
i++;
}
}
}
if (cvalue)
CONS_Printf(" Current value: %s\n", cvalue);
else if (cvar->string)
CONS_Printf(" Current value: %s\n", cvar->string);
else
CONS_Printf(" Current value: %d\n", cvar->value);
if (cvar->revert.v.string != NULL && strcmp(cvar->revert.v.string, cvar->string) != 0)
CONS_Printf(" Value before netgame: %s\n", cvar->revert.v.string);
}
else
{
for (cmd = com_commands; cmd; cmd = cmd->next)
{
if (strcmp(cmd->name, help))
continue;
CONS_Printf("\x82""Command %s:\n", cmd->name);
CONS_Printf(" help is not available for commands");
CONS_Printf("\x82""\nCheck wiki.srb2.org for more or try typing <name> without arguments\n");
return;
}
CONS_Printf("No variable or command named %s", help);
CONS_Printf("\x82""\nCheck wiki.srb2.org for more or try typing help without arguments\n");
}
return;
}
else
{
// variables
CONS_Printf("\x82""Variables:\n");
for (cvar = consvar_vars; cvar; cvar = cvar->next)
{
if (cvar->flags & CV_NOSHOWHELP)
continue;
CONS_Printf("%s ", cvar->name);
i++;
}
// commands
CONS_Printf("\x82""\nCommands:\n");
for (cmd = com_commands; cmd; cmd = cmd->next)
{
CONS_Printf("%s ",cmd->name);
i++;
}
CONS_Printf("\x82""\nCheck wiki.srb2.org for more or type help <command or variable>\n");
CONS_Debug(DBG_GAMELOGIC, "\x82Total : %d\n", i);
}
}
static void COM_Find_f(void)
{
static char prefix[80];
xcommand_t *cmd;
consvar_t *cvar;
cmdalias_t *alias;
const char *match;
const char *help;
size_t helplen;
boolean matchesany;
if (COM_Argc() != 2)
{
CONS_Printf(M_GetText("find <text>: Search for variables, commands and aliases containing <text>\n"));
return;
}
help = COM_Argv(1);
helplen = strlen(help);
CONS_Printf("\x82""Variables:\n");
matchesany = false;
for (cvar = consvar_vars; cvar; cvar = cvar->next)
{
if (cvar->flags & CV_NOSHOWHELP)
continue;
match = strstr(cvar->name, help);
if (match != NULL)
{
memcpy(prefix, cvar->name, match - cvar->name);
prefix[match - cvar->name] = '\0';
CONS_Printf(" %s\x83%s\x80%s\n", prefix, help, &match[helplen]);
matchesany = true;
}
}
if (!matchesany)
CONS_Printf(" (none)\n");
CONS_Printf("\x82""Commands:\n");
matchesany = false;
for (cmd = com_commands; cmd; cmd = cmd->next)
{
match = strstr(cmd->name, help);
if (match != NULL)
{
memcpy(prefix, cmd->name, match - cmd->name);
prefix[match - cmd->name] = '\0';
CONS_Printf(" %s\x83%s\x80%s\n", prefix, help, &match[helplen]);
matchesany = true;
}
}
if (!matchesany)
CONS_Printf(" (none)\n");
CONS_Printf("\x82""Aliases:\n");
matchesany = false;
for (alias = com_alias; alias; alias = alias->next)
{
match = strstr(alias->name, help);
if (match != NULL)
{
memcpy(prefix, alias->name, match - alias->name);
prefix[match - alias->name] = '\0';
CONS_Printf(" %s\x83%s\x80%s\n", prefix, help, &match[helplen]);
matchesany = true;
}
}
if (!matchesany)
CONS_Printf(" (none)\n");
}
/** Toggles a console variable. Useful for on/off values.
*
* This works on on/off, yes/no values only
*/
static void COM_Toggle_f(void)
{
consvar_t *cvar;
if (COM_Argc() != 2)
{
CONS_Printf(M_GetText("Toggle <cvar_name>: Toggle the value of a cvar\n"));
return;
}
cvar = CV_FindVar(COM_Argv(1));
if (!cvar)
{
CONS_Alert(CONS_NOTICE, M_GetText("%s is not a cvar\n"), COM_Argv(1));
return;
}
if (CV_Immutable(cvar))
return;
if (!(cvar->PossibleValue == CV_YesNo || cvar->PossibleValue == CV_OnOff || cvar->PossibleValue == CV_TrueFalse))
{
CONS_Alert(CONS_NOTICE, M_GetText("%s is not a boolean value\n"), COM_Argv(1));
return;
}
// netcvar don't change imediately
cvar->flags |= CV_SHOWMODIFONETIME;
CV_AddValue(cvar, +1);
}
/** Command variant of CV_AddValue
*/
static void COM_Add_f(void)
{
consvar_t *cvar;
if (COM_Argc() != 3)
{
CONS_Printf(M_GetText("Add <cvar_name> <value>: Add to the value of a cvar. Negative values work too!\n"));
return;
}
cvar = CV_FindVar(COM_Argv(1));
if (!cvar)
{
CONS_Alert(CONS_NOTICE, M_GetText("%s is not a cvar\n"), COM_Argv(1));
return;
}
if (CV_Immutable(cvar))
return;
if (( cvar->flags & CV_FLOAT ))
{
float n =FIXED_TO_FLOAT (cvar->value) + atof(COM_Argv(2));
CV_Set(cvar, va("%ld%s", (long)n, M_Ftrim(n)));
}
else
CV_AddValue(cvar, atoi(COM_Argv(2)));
}
// =========================================================================
// VARIABLE SIZE BUFFERS
// =========================================================================
/** Initializes a variable size buffer.
*
* \param buf Buffer to initialize.
* \param initsize Initial size for the buffer.
*/
void VS_Alloc(vsbuf_t *buf, size_t initsize)
{
#define VSBUFMINSIZE 256
if (initsize < VSBUFMINSIZE)
initsize = VSBUFMINSIZE;
buf->data = Z_Malloc(initsize, PU_STATIC, NULL);
buf->maxsize = initsize;
buf->cursize = 0;
#undef VSBUFMINSIZE
}
/** Frees a variable size buffer.
*
* \param buf Buffer to free.
*/
void VS_Free(vsbuf_t *buf)
{
buf->cursize = 0;
}
/** Clears a variable size buffer.
*
* \param buf Buffer to clear.
*/
void VS_Clear(vsbuf_t *buf)
{
buf->cursize = 0;
}
/** Makes sure a variable size buffer has enough space for data of a
* certain length.
*
* \param buf The buffer. It is enlarged if necessary.
* \param length The length of data we need to add.
* \return Pointer to where the new data can go.
*/
void *VS_GetSpace(vsbuf_t *buf, size_t length)
{
void *data;
if (buf->cursize + length > buf->maxsize)
{
if (!buf->allowoverflow)
I_Error("overflow 111");
if (length > buf->maxsize)
I_Error("overflow l%s 112", sizeu1(length));
buf->overflowed = true;
CONS_Printf("VS buffer overflow");
VS_Clear(buf);
}
data = buf->data + buf->cursize;
buf->cursize += length;
return data;
}
/** Copies data to the end of a variable size buffer.
*
* \param buf The buffer.
* \param data The data to copy.
* \param length The length of the data.
* \sa VS_Print
*/
void VS_Write(vsbuf_t *buf, const void *data, size_t length)
{
M_Memcpy(VS_GetSpace(buf, length), data, length);
}
void VS_WriteEx(vsbuf_t *buf, const void *data, size_t length, com_flags_t flags)
{
char *p;
p = VS_GetSpace(buf, 2 + length);
p[0] = '\033';
p[1] = flags;
M_Memcpy(&p[2], data, length);
}
/** Prints text in a variable buffer. Like VS_Write() plus a
* trailing NUL.
*
* \param buf The buffer.
* \param data The NUL-terminated string.
* \sa VS_Write
*/
void VS_Print(vsbuf_t *buf, const char *data)
{
size_t len;
len = strlen(data) + 1;
if (buf->data[buf->cursize-1])
M_Memcpy((UINT8 *)VS_GetSpace(buf, len), data, len); // no trailing 0
else
M_Memcpy((UINT8 *)VS_GetSpace(buf, len-1) - 1, data, len); // write over trailing 0
}
// =========================================================================
//
// CONSOLE VARIABLES
//
// console variables are a simple way of changing variables of the game
// through the console or code, at run time.
//
// console vars acts like simplified commands, because a function can be
// attached to them, and called whenever a console var is modified
//
// =========================================================================
static const char *cv_null_string = "";
/** Searches if a variable has been registered.
*
* \param name Variable to search for.
* \return Pointer to the variable if found, or NULL.
* \sa CV_FindNetVar
*/
consvar_t *CV_FindVar(const char *name)
{
consvar_t *cvar;
for (cvar = consvar_vars; cvar; cvar = cvar->next)
if (!stricmp(name,cvar->name))
return cvar;
return NULL;
}
#ifdef OLD22DEMOCOMPAT
/** Builds a unique Net Variable identifier number, which was used
* in network packets and demos instead of the full name.
*
* This function only still exists to keep compatibility with old demos.
*
* \param s Name of the variable.
* \return A new unique identifier.
*/
static inline UINT16 CV_ComputeOldDemoID(const char *s)
{
UINT16 ret = 0, i = 0;
static UINT16 premiers[16] = {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53};
while (*s)
{
ret = (UINT16)(ret + (*s)*premiers[i]);
s++;
i = (UINT16)((i+1) % 16);
}
return ret;
}
/** Finds a net variable based on its old style hash. If a hash collides, a
* warning is printed and this function returns NULL.
*
* \param chk The variable's old style hash.
* \return A pointer to the variable itself if found, or NULL.
*/
static old_demo_var_t *CV_FindOldDemoVar(UINT16 chk)
{
old_demo_var_t *demovar;
for (demovar = consvar_old_demo_vars; demovar; demovar = demovar->next)
{
if (demovar->checksum == chk)
{
if (demovar->collides)
{
CONS_Alert(CONS_WARNING,
"Old demo netvar id %hu is a collision\n", chk);
return NULL;
}
return demovar;
}
}
return NULL;
}
#endif/*OLD22DEMOCOMPAT*/
/** Finds a net variable based on its identifier number.
*
* \param netid The variable's identifier number.
* \return A pointer to the variable itself if found, or NULL.
*/
static consvar_t *CV_FindNetVar(UINT16 netid)
{
consvar_t *cvar;
if (netid > consvar_number_of_netids)
return NULL;
for (cvar = consvar_vars; cvar; cvar = cvar->next)
if (cvar->netid == netid)
return cvar;
return NULL;
}
static void Setvalue(consvar_t *var, const char *valstr, boolean stealth);
#ifdef OLD22DEMOCOMPAT
/* Sets up a netvar for compatibility with old demos. */
static void CV_RegisterOldDemoVar(consvar_t *variable)
{
old_demo_var_t *demovar;
UINT16 old_demo_id;
old_demo_id = CV_ComputeOldDemoID(variable->name);
demovar = CV_FindOldDemoVar(old_demo_id);
if (demovar)
demovar->collides = true;
else
{
demovar = ZZ_Calloc(sizeof *demovar);
demovar->checksum = old_demo_id;
demovar->cvar = variable;
demovar->next = consvar_old_demo_vars;
consvar_old_demo_vars = demovar;
}
}
#endif
/** Registers a variable for later use from the console.
*
* \param variable The variable to register.
*/
void CV_RegisterVar(consvar_t *variable)
{
// first check to see if it has already been defined
if (CV_FindVar(variable->name))
{
CONS_Printf(M_GetText("Variable %s is already defined\n"), variable->name);
return;
}
// check for overlap with a command
if (COM_Exists(variable->name))
{
CONS_Printf(M_GetText("%s is a command name\n"), variable->name);
return;
}
// check net variables
if (variable->flags & CV_NETVAR)
{
/* in case of overflow... */
if (consvar_number_of_netids == UINT16_MAX)
I_Error("Way too many netvars");
variable->netid = ++consvar_number_of_netids;
#ifdef OLD22DEMOCOMPAT
CV_RegisterOldDemoVar(variable);
#endif
}
// link the variable in
if (!(variable->flags & CV_HIDEN))
{
variable->next = consvar_vars;
consvar_vars = variable;
}
variable->string = variable->zstring = NULL;
memset(&variable->revert, 0, sizeof variable->revert);
variable->changed = 0; // new variable has not been modified by the user
#ifdef PARANOIA
if ((variable->flags & CV_NOINIT) && !(variable->flags & CV_CALL))
I_Error("variable %s has CV_NOINIT without CV_CALL\n", variable->name);
if ((variable->flags & CV_CALL) && !(variable->func || variable->can_change))
I_Error("variable %s has CV_CALL without any callbacks\n", variable->name);
#endif
if (variable->flags & CV_NOINIT)
variable->flags &= ~CV_CALL;
Setvalue(variable, variable->defaultvalue, false);
if (variable->flags & CV_NOINIT)
variable->flags |= CV_CALL;
// the SetValue will set this bit
variable->flags &= ~CV_MODIFIED;
}
/** Finds the string value of a console variable.
*
* \param var_name The variable's name.
* \return The string value or "" if the variable is not found.
*/
static const char *CV_StringValue(const char *var_name)
{
consvar_t *var;
var = CV_FindVar(var_name);
if (!var)
return cv_null_string;
return var->string;
}
/** Completes the name of a console variable.
*
* \param partial The partial name of the variable (potentially).
* \param skips Number of variables to skip.
* \return The complete variable name, or NULL.
* \sa COM_CompleteCommand, CV_CompleteAlias
*/
const char *CV_CompleteVar(char *partial, INT32 skips)
{
consvar_t *cvar;
size_t len;
len = strlen(partial);
if (!len)
return NULL;
// check variables
for (cvar = consvar_vars; cvar; cvar = cvar->next)
if (!strncmp(partial, cvar->name, len))
if (!skips--)
return cvar->name;
return NULL;
}
/** Sets a value to a variable with less checking. Only for internal use.
*
* \param var Variable to set.
* \param valstr String value for the variable.
*/
static void Setvalue(consvar_t *var, const char *valstr, boolean stealth)
{
boolean override = false;
INT32 overrideval = 0;
// raise 'can change' code
LUA_CVarChanged(var); // let consolelib know what cvar this is.
if (var->flags & CV_CALL && var->can_change && !stealth)
{
if (!var->can_change(valstr))
{
// The callback refused the default value on register. How naughty...
// So we just use some fallback value.
if (var->string == NULL)
{
if (var->PossibleValue)
{
// Use PossibleValue
valstr = var->PossibleValue[0].strvalue;
}
else
{
// Else, use an empty string
valstr = "";
}
}
else
{
// Callback returned false, and the game is not registering this variable,
// so we can return safely.
return;
}
}
}
if (var->PossibleValue)
{
INT32 v;
if (var->flags & CV_FLOAT)
{
double d = atof(valstr);
if (fpclassify(d) == FP_ZERO && valstr[0] != '0')
v = INT32_MIN;
else
v = (INT32)(d * FRACUNIT);
}
else
{
v = atoi(valstr);
if (!v && valstr[0] != '0')
v = INT32_MIN; // Invalid integer trigger
}
if (var->PossibleValue[0].strvalue && !stricmp(var->PossibleValue[0].strvalue, "MIN")) // bounded cvar
{
#define MINVAL 0
#define MAXVAL 1
INT32 i;
#ifdef PARANOIA
if (!var->PossibleValue[MAXVAL].strvalue)
I_Error("Bounded cvar \"%s\" without maximum!\n", var->name);
#endif
// search for other
for (i = MAXVAL+1; var->PossibleValue[i].strvalue; i++)
if (v == var->PossibleValue[i].value || !stricmp(var->PossibleValue[i].strvalue, valstr))
{
if (client && execversion_enabled)
{
if (var->revert.allocated)
{
Z_Free(var->revert.v.string);
var->revert.allocated = false; // the below value is not allocated in zone memory, don't try to free it!
}
var->revert.v.const_munge = var->PossibleValue[i].strvalue;
return;
}
// free the old value string
Z_Free(var->zstring);
var->zstring = NULL;
var->value = var->PossibleValue[i].value;
var->string = var->PossibleValue[i].strvalue;
goto finish;
}
if ((v != INT32_MIN && v < var->PossibleValue[MINVAL].value) || !stricmp(valstr, "MIN"))
{
v = var->PossibleValue[MINVAL].value;
valstr = var->PossibleValue[MINVAL].strvalue;
override = true;
overrideval = v;
}
else if ((v != INT32_MIN && v > var->PossibleValue[MAXVAL].value) || !stricmp(valstr, "MAX"))
{
v = var->PossibleValue[MAXVAL].value;
valstr = var->PossibleValue[MAXVAL].strvalue;
override = true;
overrideval = v;
}
if (v == INT32_MIN)
goto badinput;
#undef MINVAL
#undef MAXVAL
}
else
{
INT32 i;
// check first strings
for (i = 0; var->PossibleValue[i].strvalue; i++)
if (!stricmp(var->PossibleValue[i].strvalue, valstr))
goto found;
if (v != INT32_MIN)
{
// check INT32 now
for (i = 0; var->PossibleValue[i].strvalue; i++)
if (v == var->PossibleValue[i].value)
goto found;
}
// Not found ... but wait, there's hope!
if (var->PossibleValue == CV_OnOff || var->PossibleValue == CV_YesNo || var->PossibleValue == CV_TrueFalse)
{
overrideval = -1;
if (!stricmp(valstr, "on") || !stricmp(valstr, "yes") || !stricmp(valstr, "true"))
overrideval = 1;
else if (!stricmp(valstr, "off") || !stricmp(valstr, "no") || !stricmp(valstr, "false"))
overrideval = 0;
if (overrideval != -1)
{
for (i = 0; var->PossibleValue[i].strvalue; i++)
if (overrideval == var->PossibleValue[i].value)
goto found;
}
}
// ...or not.
goto badinput;
found:
if (client && execversion_enabled)
{
var->revert.v.const_munge = var->PossibleValue[i].strvalue;
return;
}
var->value = var->PossibleValue[i].value;
var->string = var->PossibleValue[i].strvalue;
goto finish;
}
}
if (client && execversion_enabled)
{
if (var->revert.allocated)
{
Z_Free(var->revert.v.string);
// Z_StrDup creates a new zone memory block, so we can keep the allocated flag on
}
var->revert.v.string = Z_StrDup(valstr);
return;
}
// free the old value string
Z_Free(var->zstring);
var->string = var->zstring = Z_StrDup(valstr);
if (override)
var->value = overrideval;
else if (var->flags & CV_FLOAT)
{
double d = atof(var->string);
var->value = (INT32)(d * FRACUNIT);
}
else
{
if (var == &cv_forceskin)
{
var->value = R_SkinAvailable(var->string);
if (!R_SkinUsable(-1, var->value))
var->value = -1;
}
else
var->value = atoi(var->string);
}
finish:
if (var->flags & CV_SHOWMODIFONETIME || var->flags & CV_SHOWMODIF)
{
CONS_Printf(M_GetText("%s set to %s\n"), var->name, var->string);
var->flags &= ~CV_SHOWMODIFONETIME;
}
else // display message in debug file only
{
DEBFILE(va("%s set to %s\n", var->name, var->string));
}
var->flags |= CV_MODIFIED;
// raise 'on change' code
if (var->flags & CV_CALL && var->func && !stealth)
var->func();
return;
// landing point for possiblevalue failures
badinput:
if (var != &cv_nextmap) // Suppress errors for cv_nextmap
CONS_Printf(M_GetText("\"%s\" is not a possible value for \"%s\"\n"), valstr, var->name);
// default value not valid... ?!
if (var->defaultvalue == valstr)
I_Error("Variable %s default value \"%s\" is not a possible value\n", var->name, var->defaultvalue);
}
//
// Use XD_NETVAR argument:
// 2 byte for variable identification
// then the value of the variable followed with a 0 byte (like str)
//
static boolean serverloading = false;
static consvar_t *
ReadNetVar (UINT8 **p, char **return_value, boolean *return_stealth)
{
UINT16 netid;
char *val;
boolean stealth;
consvar_t *cvar;
netid = READUINT16 (*p);
val = (char *)*p;
SKIPSTRING (*p);
stealth = READUINT8 (*p);
cvar = CV_FindNetVar(netid);
if (cvar)
{
(*return_value) = val;
(*return_stealth) = stealth;
DEBFILE(va("Netvar received: %s [netid=%d] value %s\n", cvar->name, netid, val));
}
else
CONS_Alert(CONS_WARNING, "Netvar not found with netid %hu\n", netid);
return cvar;
}
#ifdef OLD22DEMOCOMPAT
static consvar_t *
ReadOldDemoVar (UINT8 **p, char **return_value, boolean *return_stealth)
{
UINT16 id;
char *val;
boolean stealth;
old_demo_var_t *demovar;
id = READUINT16 (*p);
val = (char *)*p;
SKIPSTRING (*p);
stealth = READUINT8 (*p);
demovar = CV_FindOldDemoVar(id);
if (demovar)
{
(*return_value) = val;
(*return_stealth) = stealth;
return demovar->cvar;
}
else
{
CONS_Alert(CONS_WARNING, "Netvar not found with old demo id %hu\n", id);
return NULL;
}
}
#endif/*OLD22DEMOCOMPAT*/
static consvar_t *
ReadDemoVar (UINT8 **p, char **return_value, boolean *return_stealth)
{
char *name;
char *val;
boolean stealth;
consvar_t *cvar;
name = (char *)*p;
SKIPSTRING (*p);
val = (char *)*p;
SKIPSTRING (*p);
stealth = READUINT8 (*p);
cvar = CV_FindVar(name);
if (cvar)
{
(*return_value) = val;
(*return_stealth) = stealth;
}
else
CONS_Alert(CONS_WARNING, "Netvar not found with name %s\n", name);
return cvar;
}
static void Got_NetVar(UINT8 **p, INT32 playernum)
{
consvar_t *cvar;
char *svalue;
boolean stealth;
if (playernum != serverplayer && !IsPlayerAdmin(playernum) && !serverloading)
{
// not from server or remote admin, must be hacked/buggy client
CONS_Alert(CONS_WARNING, M_GetText("Illegal netvar command received from %s\n"), player_names[playernum]);
if (server)
SendKick(playernum, KICK_MSG_CON_FAIL | KICK_MSG_KEEP_BODY);
return;
}
cvar = ReadNetVar(p, &svalue, &stealth);
if (cvar)
Setvalue(cvar, svalue, stealth);
}
void CV_SaveVars(UINT8 **p, boolean in_demo)
{
consvar_t *cvar;
UINT8 *count_p = *p;
UINT16 count = 0;
// send only changed cvars ...
// the client will reset all netvars to default before loading
WRITEUINT16(*p, 0x0000);
for (cvar = consvar_vars; cvar; cvar = cvar->next)
if ((cvar->flags & CV_NETVAR) && !CV_IsSetToDefault(cvar))
{
if (in_demo)
{
WRITESTRING(*p, cvar->name);
}
else
{
WRITEUINT16(*p, cvar->netid);
}
WRITESTRING(*p, cvar->string);
WRITEUINT8(*p, false);
++count;
}
WRITEUINT16(count_p, count);
}
static void CV_LoadVars(UINT8 **p,
consvar_t *(*got)(UINT8 **p, char **ret_value, boolean *ret_stealth))
{
const boolean store = (client || demoplayback);
consvar_t *cvar;
UINT16 count;
char *val;
boolean stealth;
// prevent "invalid command received"
serverloading = true;
for (cvar = consvar_vars; cvar; cvar = cvar->next)
{
if (cvar->flags & CV_NETVAR)
{
if (store && cvar->revert.v.string == NULL)
{
cvar->revert.v.const_munge = cvar->string;
cvar->revert.allocated = ( cvar->zstring != NULL );
cvar->zstring = NULL;/* don't free this */
}
Setvalue(cvar, cvar->defaultvalue, true);
}
}
count = READUINT16(*p);
while (count--)
{
cvar = (*got)(p, &val, &stealth);
if (cvar)
Setvalue(cvar, val, stealth);
}
serverloading = false;
}
void CV_RevertNetVars(void)
{
consvar_t * cvar;
for (cvar = consvar_vars; cvar; cvar = cvar->next)
{
if (cvar->revert.v.string != NULL)
{
Setvalue(cvar, cvar->revert.v.string, false);
if (cvar->revert.allocated)
{
Z_Free(cvar->revert.v.string);
cvar->revert.allocated = false; // no value being held now
}
cvar->revert.v.string = NULL;
}
}
}
void CV_LoadNetVars(UINT8 **p)
{
CV_LoadVars(p, ReadNetVar);
}
#ifdef OLD22DEMOCOMPAT
void CV_LoadOldDemoVars(UINT8 **p)
{
CV_LoadVars(p, ReadOldDemoVar);
}
#endif
void CV_LoadDemoVars(UINT8 **p)
{
CV_LoadVars(p, ReadDemoVar);
}
static void CV_SetCVar(consvar_t *var, const char *value, boolean stealth);
void CV_ResetCheatNetVars(void)
{
consvar_t *cvar;
// Stealthset everything back to default.
for (cvar = consvar_vars; cvar; cvar = cvar->next)
if (cvar->flags & CV_CHEAT)
CV_SetCVar(cvar, cvar->defaultvalue, true);
}
// Returns true if the variable's current value is its default value
boolean CV_IsSetToDefault(consvar_t *v)
{
return (!(strcmp(v->defaultvalue, v->string)));
}
// If any cheats CVars are not at their default settings, return true.
// Else return false.
// This returns a UINT8 because I'm too lazy to deal with the packet structure.
// Deal with it. =P
UINT8 CV_CheatsEnabled(void)
{
consvar_t *cvar;
for (cvar = consvar_vars; cvar; cvar = cvar->next)
if ((cvar->flags & CV_CHEAT) && strcmp(cvar->defaultvalue, cvar->string))
return 1;
return 0;
}
/** Sets a value to a variable, performing some checks and calling the
* callback function if there is one.
* Does as if "<varname> <value>" is entered at the console.
*
* \param var The variable.
* \param value The string value.
* \sa CV_StealthSet, CV_SetValue
*/
static void CV_SetCVar(consvar_t *var, const char *value, boolean stealth)
{
#ifdef PARANOIA
if (!var)
I_Error("CV_Set: no variable\n");
if (!var->string)
I_Error("CV_Set: %s no string set!\n", var->name);
#endif
if (!var || !var->string || !value || !stricmp(var->string, value))
return; // no changes
if (var->flags & CV_NETVAR)
{
// send the value of the variable
UINT8 buf[128];
UINT8 *p = buf;
// Loading from a config in a netgame? Set revert value.
if (client && execversion_enabled)
{
Setvalue(var, value, true);
return;
}
if (!(server || (addedtogame && IsPlayerAdmin(consoleplayer))))
{
CONS_Printf(M_GetText("Only the server or admin can change: %s %s\n"), var->name, var->string);
return;
}
if (var == &cv_forceskin)
{
INT32 skin = R_SkinAvailable(value);
if ((stricmp(value, "None")) && ((skin == -1) || !R_SkinUsable(-1, skin)))
{
CONS_Printf("Please provide a valid skin name (\"None\" disables).\n");
return;
}
}
// Only add to netcmd buffer if in a netgame, otherwise, just change it.
if (netgame || multiplayer)
{
WRITEUINT16(p, var->netid);
WRITESTRING(p, value);
WRITEUINT8(p, stealth);
SendNetXCmd(XD_NETVAR, buf, p-buf);
}
else
Setvalue(var, value, stealth);
}
else
if ((var->flags & CV_NOTINNET) && netgame)
{
CONS_Printf(M_GetText("This variable can't be changed while in netgame: %s %s\n"), var->name, var->string);
return;
}
else
Setvalue(var, value, stealth);
}
/** Sets a value to a variable without calling its callback function.
*
* \param var The variable.
* \param value The string value.
* \sa CV_Set, CV_StealthSetValue
*/
void CV_StealthSet(consvar_t *var, const char *value)
{
CV_SetCVar(var, value, true);
}
/** Sets a numeric value to a variable, sometimes calling its callback
* function.
*
* \param var The variable.
* \param value The numeric value, converted to a string before setting.
* \param stealth Do we call the callback function or not?
*/
static void CV_SetValueMaybeStealth(consvar_t *var, INT32 value, boolean stealth)
{
char val[SKINNAMESIZE+1];
if (var == &cv_forceskin) // Special handling.
{
const char *tmpskin = NULL;
if ((value < 0) || (value >= numskins))
tmpskin = "None";
else
tmpskin = skins[value]->name;
strncpy(val, tmpskin, SKINNAMESIZE);
}
else
sprintf(val, "%d", value);
CV_SetCVar(var, val, stealth);
}
/** Sets a numeric value to a variable without calling its callback
* function.
*
* \param var The variable.
* \param value The numeric value, converted to a string before setting.
* \sa CV_SetValue, CV_StealthSet
*/
void CV_StealthSetValue(consvar_t *var, INT32 value)
{
CV_SetValueMaybeStealth(var, value, true);
}
// New wrapper for what used to be CV_Set()
void CV_Set(consvar_t *var, const char *value)
{
CV_SetCVar(var, value, false);
}
/** Sets a numeric value to a variable, performing some checks and
* calling the callback function if there is one.
*
* \param var The variable.
* \param value The numeric value, converted to a string before setting.
* \sa CV_Set, CV_StealthSetValue
*/
void CV_SetValue(consvar_t *var, INT32 value)
{
CV_SetValueMaybeStealth(var, value, false);
}
/** Adds a value to a console variable.
* Used to increment and decrement variables from the menu.
* Contains special cases to handle pointlimit in some multiplayer modes,
* map number for game hosting, etc.
*
* \param var The variable to add to.
* \param increment The change in the variable; can be negative for a
* decrement.
* \sa CV_SetValue
*/
void CV_AddValue(consvar_t *var, INT32 increment)
{
INT32 newvalue, max;
if (!increment)
return;
// count pointlimit better
if (var == &cv_pointlimit && (gametype == GT_MATCH))
increment *= 50;
if (var == &cv_forceskin) // Special handling.
{
INT32 oldvalue = var->value;
newvalue = oldvalue;
do
{
newvalue += increment;
if (newvalue < -1)
newvalue = (numskins - 1);
else if (newvalue >= numskins)
newvalue = -1;
} while ((oldvalue != newvalue)
&& !(R_SkinUsable(-1, newvalue)));
}
else
newvalue = var->value + increment;
if (var->PossibleValue)
{
if (var == &cv_nextmap)
{
// Special case for the nextmap variable, used only directly from the menu
INT32 oldvalue = var->value - 1, gt;
gt = cv_newgametype.value;
{
newvalue = var->value - 1;
do
{
if(increment > 0) // Going up!
{
newvalue++;
if (newvalue == NUMMAPS)
newvalue = 0;
}
else // Going down!
{
newvalue--;
if (newvalue == -1)
newvalue = NUMMAPS-1;
}
if (newvalue == oldvalue)
gt = -1; // don't loop forever if there's none of a certain gametype
if(!mapheaderinfo[newvalue])
continue; // Don't allocate the header. That just makes memory usage skyrocket.
} while (newvalue != oldvalue && !M_CanShowLevelInList(newvalue, gt));
var->value = newvalue + 1;
var->func();
return;
}
}
#define MINVAL 0
#define MAXVAL 1
else if (var->PossibleValue[MINVAL].strvalue && !strcmp(var->PossibleValue[MINVAL].strvalue, "MIN"))
{
#ifdef PARANOIA
if (!var->PossibleValue[MAXVAL].strvalue)
I_Error("Bounded cvar \"%s\" without maximum!\n", var->name);
#endif
if (newvalue < var->PossibleValue[MINVAL].value || newvalue > var->PossibleValue[MAXVAL].value)
{
INT32 currentindice = -1, newindice;
for (max = MAXVAL+1; var->PossibleValue[max].strvalue; max++)
{
if (var->PossibleValue[max].value == newvalue)
{
increment = 0;
currentindice = max;
break; // The value we definitely want, stop here.
}
else if (var->PossibleValue[max].value == var->value)
currentindice = max; // The value we maybe want.
}
if (increment)
{
increment = (increment > 0) ? 1 : -1;
if (currentindice == -1 && max != MAXVAL+1)
newindice = ((increment > 0) ? MAXVAL : max) + increment;
else
newindice = currentindice + increment;
if (newindice >= max || newindice <= MAXVAL)
{
if (var == &cv_pointlimit && (gametype == GT_MATCH) && increment > 0)
CV_SetValue(var, 50);
else
{
newvalue = var->PossibleValue[((increment > 0) ? MINVAL : MAXVAL)].value;
CV_SetValue(var, newvalue);
}
}
else
CV_Set(var, var->PossibleValue[newindice].strvalue);
}
else
CV_Set(var, var->PossibleValue[currentindice].strvalue);
}
else
CV_SetValue(var, newvalue);
}
#undef MINVAL
#undef MAXVAL
else
{
INT32 currentindice = -1, newindice;
// this code do not support more than same value for differant PossibleValue
for (max = 0; var->PossibleValue[max].strvalue; max++)
if (var->PossibleValue[max].value == var->value)
currentindice = max;
if (var == &cv_chooseskin)
{
// Special case for the chooseskin variable, used only directly from the menu
newvalue = var->value - 1;
do
{
if (increment > 0) // Going up!
{
newvalue++;
if (newvalue == MAXSKINS)
newvalue = 0;
}
else if (increment < 0) // Going down!
{
newvalue--;
if (newvalue == -1)
newvalue = MAXSKINS-1;
}
} while (var->PossibleValue[newvalue].strvalue == NULL);
var->value = newvalue + 1;
var->string = var->PossibleValue[newvalue].strvalue;
var->func();
return;
}
#ifdef PARANOIA
if (currentindice == -1)
I_Error("CV_AddValue: current value %d not found in possible value\n",
var->value);
#endif
newindice = (currentindice + increment + max) % max;
CV_Set(var, var->PossibleValue[newindice].strvalue);
}
}
else
CV_SetValue(var, newvalue);
var->changed = 1; // user has changed it now
}
void CV_InitFilterVar(void)
{
joyaxis_default = joyaxis2_default = true;
joyaxis_count = joyaxis2_count = 0;
}
void CV_ToggleExecVersion(boolean enable)
{
execversion_enabled = enable;
}
static void CV_EnforceExecVersion(void)
{
if (!execversion_enabled)
CV_StealthSetValue(&cv_execversion, EXECVERSION);
}
static boolean CV_FilterJoyAxisVars(consvar_t *v, const char *valstr)
{
// If ALL axis settings are previous defaults, set them to the new defaults
// EXECVERSION < 26 (2.1.21)
if (joyaxis_default)
{
if (!stricmp(v->name, "joyaxis_turn"))
{
if (joyaxis_count > 6) return false;
// we're currently setting the new defaults, don't interfere
else if (joyaxis_count == 6) return true;
if (!stricmp(valstr, "X-Axis")) joyaxis_count++;
else joyaxis_default = false;
}
if (!stricmp(v->name, "joyaxis_move"))
{
if (joyaxis_count > 6) return false;
else if (joyaxis_count == 6) return true;
if (!stricmp(valstr, "Y-Axis")) joyaxis_count++;
else joyaxis_default = false;
}
if (!stricmp(v->name, "joyaxis_side"))
{
if (joyaxis_count > 6) return false;
else if (joyaxis_count == 6) return true;
if (!stricmp(valstr, "Z-Axis")) joyaxis_count++;
else joyaxis_default = false;
}
if (!stricmp(v->name, "joyaxis_look"))
{
if (joyaxis_count > 6) return false;
else if (joyaxis_count == 6) return true;
if (!stricmp(valstr, "None")) joyaxis_count++;
else joyaxis_default = false;
}
if (!stricmp(v->name, "joyaxis_fire")
|| !stricmp(v->name, "joyaxis_firenormal"))
{
if (joyaxis_count > 6) return false;
else if (joyaxis_count == 6) return true;
if (!stricmp(valstr, "None")) joyaxis_count++;
else joyaxis_default = false;
}
// reset all axis settings to defaults
if (joyaxis_count == 6)
{
COM_BufInsertText(va("%s \"%s\"\n", cv_turnaxis.name, cv_turnaxis.defaultvalue));
COM_BufInsertText(va("%s \"%s\"\n", cv_moveaxis.name, cv_moveaxis.defaultvalue));
COM_BufInsertText(va("%s \"%s\"\n", cv_sideaxis.name, cv_sideaxis.defaultvalue));
COM_BufInsertText(va("%s \"%s\"\n", cv_lookaxis.name, cv_lookaxis.defaultvalue));
COM_BufInsertText(va("%s \"%s\"\n", cv_fireaxis.name, cv_fireaxis.defaultvalue));
COM_BufInsertText(va("%s \"%s\"\n", cv_firenaxis.name, cv_firenaxis.defaultvalue));
joyaxis_count++;
return false;
}
}
if (joyaxis2_default)
{
if (!stricmp(v->name, "joyaxis2_turn"))
{
if (joyaxis2_count > 6) return false;
// we're currently setting the new defaults, don't interfere
else if (joyaxis2_count == 6) return true;
if (!stricmp(valstr, "X-Axis")) joyaxis2_count++;
else joyaxis2_default = false;
}
if (!stricmp(v->name, "joyaxis2_move"))
{
if (joyaxis2_count > 6) return false;
else if (joyaxis2_count == 6) return true;
if (!stricmp(valstr, "Y-Axis")) joyaxis2_count++;
else joyaxis2_default = false;
}
if (!stricmp(v->name, "joyaxis2_side"))
{
if (joyaxis2_count > 6) return false;
else if (joyaxis2_count == 6) return true;
if (!stricmp(valstr, "Z-Axis")) joyaxis2_count++;
else joyaxis2_default = false;
}
if (!stricmp(v->name, "joyaxis2_look"))
{
if (joyaxis2_count > 6) return false;
else if (joyaxis2_count == 6) return true;
if (!stricmp(valstr, "None")) joyaxis2_count++;
else joyaxis2_default = false;
}
if (!stricmp(v->name, "joyaxis2_fire")
|| !stricmp(v->name, "joyaxis2_firenormal"))
{
if (joyaxis2_count > 6) return false;
else if (joyaxis2_count == 6) return true;
if (!stricmp(valstr, "None")) joyaxis2_count++;
else joyaxis2_default = false;
}
// reset all axis settings to defaults
if (joyaxis2_count == 6)
{
COM_BufInsertText(va("%s \"%s\"\n", cv_turnaxis2.name, cv_turnaxis2.defaultvalue));
COM_BufInsertText(va("%s \"%s\"\n", cv_moveaxis2.name, cv_moveaxis2.defaultvalue));
COM_BufInsertText(va("%s \"%s\"\n", cv_sideaxis2.name, cv_sideaxis2.defaultvalue));
COM_BufInsertText(va("%s \"%s\"\n", cv_lookaxis2.name, cv_lookaxis2.defaultvalue));
COM_BufInsertText(va("%s \"%s\"\n", cv_fireaxis2.name, cv_fireaxis2.defaultvalue));
COM_BufInsertText(va("%s \"%s\"\n", cv_firenaxis2.name, cv_firenaxis2.defaultvalue));
joyaxis2_count++;
return false;
}
}
// we haven't reached our counts yet, or we're not default
return true;
}
static boolean CV_FilterVarByVersion(consvar_t *v, const char *valstr)
{
// True means allow the CV change, False means block it
// We only care about CV_SAVE because this filters the user's config files
// We do this same check in CV_Command
if (!(v->flags & CV_SAVE))
return true;
if (GETMAJOREXECVERSION(cv_execversion.value) < 26) // 26 = 2.1.21
{
// MOUSE SETTINGS
// alwaysfreelook split between first and third person (chasefreelook)
// mousemove was on by default, which invalidates the current approach
if (!stricmp(v->name, "alwaysmlook")
|| !stricmp(v->name, "alwaysmlook2")
|| !stricmp(v->name, "mousemove")
|| !stricmp(v->name, "mousemove2"))
return false;
// mousesens was changed from 35 to 20 due to oversensitivity
if ((!stricmp(v->name, "mousesens")
|| !stricmp(v->name, "mousesens2")
|| !stricmp(v->name, "mouseysens")
|| !stricmp(v->name, "mouseysens2"))
&& atoi(valstr) == 35)
return false;
// JOYSTICK DEFAULTS
// use_joystick was changed from 0 to 1 to automatically use a joystick if available
#if defined(HAVE_SDL) || defined(_WINDOWS)
if ((!stricmp(v->name, "use_joystick")
|| !stricmp(v->name, "use_joystick2"))
&& atoi(valstr) == 0)
return false;
#endif
// axis defaults were changed to be friendly to 360 controllers
// if ALL axis settings are defaults, then change them to new values
if (!CV_FilterJoyAxisVars(v, valstr))
return false;
}
return true;
}
/** Displays or changes a variable from the console.
* Since the user is presumed to have been directly responsible
* for this change, the variable is marked as changed this game.
*
* \return False if passed command was not recognized as a console
* variable, otherwise true.
* \sa CV_ClearChangedFlags
*/
static boolean CV_Command(void)
{
consvar_t *v;
// check variables
v = CV_FindVar(COM_Argv(0));
if (!v)
return false;
if (CV_Immutable(v))
{
CONS_Alert(CONS_WARNING, "Variable '%s' cannot be changed from Lua.\n", v->name);
return true;
}
// perform a variable print or set
if (COM_Argc() == 1)
{
CONS_Printf(M_GetText("\"%s\" is \"%s\" default is \"%s\"\n"), v->name, v->string, v->defaultvalue);
return true;
}
if (!(v->flags & CV_SAVE) || CV_FilterVarByVersion(v, COM_Argv(1)))
{
CV_Set(v, COM_Argv(1));
v->changed = 1; // now it's been changed by (presumably) the user
}
return true;
}
/** Marks all variables as unchanged, indicating they've not been changed
* by the user this game.
*
* \sa CV_Command
* \author Graue <graue@oceanbase.org>
*/
void CV_ClearChangedFlags(void)
{
consvar_t *cvar;
for (cvar = consvar_vars; cvar; cvar = cvar->next)
cvar->changed = 0;
}
/** Saves console variables to a file if they have the ::CV_SAVE
* flag set.
*
* \param f File to save to.
*/
void CV_SaveVariables(FILE *f)
{
consvar_t *cvar;
for (cvar = consvar_vars; cvar; cvar = cvar->next)
if (cvar->flags & CV_SAVE)
{
char stringtowrite[MAXTEXTCMD+1];
const char * string;
if (cvar->revert.v.string != NULL)
{
string = cvar->revert.v.string;
}
else
{
string = cvar->string;
}
// Silly hack for Min/Max vars
#define MINVAL 0
#define MAXVAL 1
if (
cvar->PossibleValue != NULL &&
cvar->PossibleValue[0].strvalue &&
stricmp(cvar->PossibleValue[0].strvalue, "MIN") == 0
){ // bounded cvar
int which = stricmp(string, "MAX") == 0;
if (which || stricmp(string, "MIN") == 0)
{
INT32 value = cvar->PossibleValue[which].value;
if (cvar->flags & CV_FLOAT)
sprintf(stringtowrite, "%f", FIXED_TO_FLOAT(value));
else
sprintf(stringtowrite, "%d", value);
string = stringtowrite;
}
}
#undef MINVAL
#undef MAXVAL
fprintf(f, "%s \"%s\"\n", cvar->name, string);
}
}
// Returns true if this cvar cannot be modified in current context.
// Such as if the cvar does not have CV_ALLOWLUA.
static boolean CV_Immutable(const consvar_t *var)
{
// Currently operating from Lua
if (com_flags & COM_LUA)
{
if (!(var->flags & CV_ALLOWLUA))
{
return true;
}
}
return false;
}
//============================================================================
// SCRIPT PARSE
//============================================================================
/** Parses a token out of a string. Handles script files too.
*
* \param data String to parse.
* \return The data pointer after the token. NULL if no token found.
*/
static char *COM_Parse(char *data)
{
char c;
size_t len = 0;
com_token[0] = 0;
if (data == NULL)
return NULL;
// skip whitespace
skipwhite:
while ((c = *data) <= ' ')
{
if (c == '\0')
return NULL; // end of file;
data++;
}
// skip // comments
if (c == '/' && data[1] == '/')
{
while (*data && *data != '\n')
data++;
goto skipwhite;
}
// handle quoted strings specially
if (c == '\"')
{
data++;
for (;;)
{
c = *data++;
if (c == '\"' || c == '\0')
{
com_token[len] = 0;
return data;
}
if (c == '\033')
data++;
else
{
com_token[len] = c;
len++;
}
}
}
// parse a regular word
do
{
if (c == '\033')
{
do
{
data += 2;
c = *data;
}
while (c == '\033') ;
}
else
{
com_token[len] = c;
data++;
len++;
c = *data;
}
} while (c > 32);
com_token[len] = 0;
return data;
}
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