ref: 66fc6a3e6443d7eb8298f65b0c9803197d196ec7
dir: /sys/src/games/doom/d_main.c/
// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// $Id:$
//
// Copyright (C) 1993-1996 by id Software, Inc.
//
// This source is available for distribution and/or modification
// only under the terms of the DOOM Source Code License as
// published by id Software. All rights reserved.
//
// The source is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
// for more details.
//
// $Log:$
//
// DESCRIPTION:
// DOOM main program (D_DoomMain) and game loop (D_DoomLoop),
// plus functions to determine game mode (shareware, registered),
// parse command line parameters, configure game parameters (turbo),
// and call the startup functions.
//
//-----------------------------------------------------------------------------
static const char rcsid[] = "$Id: d_main.c,v 1.8 1997/02/03 22:45:09 b1 Exp $";
#define BGCOLOR 7
#define FGCOLOR 8
#include "doomdef.h"
#include "doomstat.h"
#include "dstrings.h"
#include "sounds.h"
#include "z_zone.h"
#include "w_wad.h"
#include "s_sound.h"
#include "v_video.h"
#include "f_finale.h"
#include "f_wipe.h"
#include "m_argv.h"
#include "m_misc.h"
#include "m_menu.h"
#include "i_system.h"
#include "i_sound.h"
#include "i_video.h"
#include "g_game.h"
#include "hu_stuff.h"
#include "wi_stuff.h"
#include "st_stuff.h"
#include "am_map.h"
#include "p_setup.h"
#include "r_local.h"
#include "d_main.h"
//
// D-DoomLoop()
// Not a globally visible function,
// just included for source reference,
// called by D_DoomMain, never exits.
// Manages timing and IO,
// calls all ?_Responder, ?_Ticker, and ?_Drawer,
// calls I_GetTime, I_StartFrame, and I_StartTic
//
void D_DoomLoop (void);
char* wadfiles[MAXWADFILES];
boolean devparm; // started game with -devparm
boolean nomonsters; // checkparm of -nomonsters
boolean respawnparm; // checkparm of -respawn
boolean fastparm; // checkparm of -fast
boolean drone;
boolean singletics = false; // debug flag to cancel adaptiveness
/* bug compatibility with various versions of doom */
boolean noztele;
boolean nobounce;
//extern int soundVolume;
//extern int sfxVolume;
//extern int musicVolume;
extern boolean inhelpscreens;
skill_t startskill;
int startepisode;
int startmap;
boolean autostart;
FILE* debugfile;
boolean advancedemo;
char wadfile[1024]; // primary wad file
char mapdir[1024]; // directory of development maps
char basedefault[1024]; // default file
void D_CheckNetGame (void);
void D_ProcessEvents (void);
void G_BuildTiccmd (ticcmd_t* cmd);
void D_DoAdvanceDemo (void);
//
// EVENT HANDLING
//
// Events are asynchronous inputs generally generated by the game user.
// Events can be discarded if no responder claims them
//
event_t events[MAXEVENTS];
int eventhead;
int eventtail;
QLock eventlock;
//
// D_PostEvent
// Called by the I/O functions when input is detected
//
void D_PostEvent (event_t* ev)
{
int next;
retry:
qlock(&eventlock);
next = (eventhead+1)&(MAXEVENTS-1);
if(next == eventtail){
qunlock(&eventlock);
if(ev->type != ev_keydown && ev->type != ev_keyup)
return;
sleep(1);
goto retry;
}
events[eventhead] = *ev;
eventhead = next;
qunlock(&eventlock);
}
//
// D_ProcessEvents
// Send all the events of the given timestamp down the responder chain
//
void D_ProcessEvents (void)
{
event_t* ev;
// IF STORE DEMO, DO NOT ACCEPT INPUT
if ( ( gamemode == commercial )
&& (W_CheckNumForName("map01")<0) )
return;
for ( ; eventtail != eventhead ; eventtail = (eventtail+1)&(MAXEVENTS-1))
{
ev = &events[eventtail];
if (M_Responder (ev))
continue; // menu ate the event
G_Responder (ev);
}
}
//
// D_Display
// draw current display, possibly wiping it from the previous
//
// wipegamestate can be set to -1 to force a wipe on the next draw
gamestate_t wipegamestate = GS_DEMOSCREEN;
extern boolean setsizeneeded;
extern int showMessages;
void R_ExecuteSetViewSize (void);
void D_Display (void)
{
static boolean viewactivestate = false;
static boolean menuactivestate = false;
static boolean inhelpscreensstate = false;
static boolean fullscreen = false;
static gamestate_t oldgamestate = -1;
static int borderdrawcount;
int nowtime;
int tics;
int wipestart;
int y;
boolean done;
boolean wipe;
boolean redrawsbar;
if (nodrawers)
return; // for comparative timing / profiling
redrawsbar = false;
// change the view size if needed
if (setsizeneeded)
{
R_ExecuteSetViewSize ();
oldgamestate = -1; // force background redraw
borderdrawcount = 3;
}
// save the current screen if about to wipe
if (gamestate != wipegamestate)
{
wipe = true;
wipe_StartScreen(0, 0, SCREENWIDTH, SCREENHEIGHT);
}
else
wipe = false;
if (gamestate == GS_LEVEL && gametic)
HU_Erase();
// do buffered drawing
switch (gamestate)
{
case GS_LEVEL:
if (!gametic)
break;
if (automapactive)
AM_Drawer ();
if (wipe || (viewheight != 200 && fullscreen) )
redrawsbar = true;
if (inhelpscreensstate && !inhelpscreens)
redrawsbar = true; // just put away the help screen
ST_Drawer (viewheight == 200, redrawsbar );
fullscreen = viewheight == 200;
break;
case GS_INTERMISSION:
WI_Drawer ();
break;
case GS_FINALE:
F_Drawer ();
break;
case GS_DEMOSCREEN:
D_PageDrawer ();
break;
}
// draw buffered stuff to screen
I_UpdateNoBlit ();
// draw the view directly
if (gamestate == GS_LEVEL && !automapactive && gametic)
R_RenderPlayerView (&players[displayplayer]);
if (gamestate == GS_LEVEL && gametic)
HU_Drawer ();
// clean up border stuff
if (gamestate != oldgamestate && gamestate != GS_LEVEL)
I_SetPalette (W_CacheLumpName ("PLAYPAL",PU_CACHE));
// see if the border needs to be initially drawn
if (gamestate == GS_LEVEL && oldgamestate != GS_LEVEL)
{
viewactivestate = false; // view was not active
R_FillBackScreen (); // draw the pattern into the back screen
}
// see if the border needs to be updated to the screen
if (gamestate == GS_LEVEL && !automapactive && scaledviewwidth != 320)
{
if (menuactive || menuactivestate || !viewactivestate)
borderdrawcount = 3;
if (borderdrawcount)
{
R_DrawViewBorder (); // erase old menu stuff
borderdrawcount--;
}
}
menuactivestate = menuactive;
viewactivestate = viewactive;
inhelpscreensstate = inhelpscreens;
oldgamestate = wipegamestate = gamestate;
// draw pause pic
if (paused)
{
if (automapactive)
y = 4;
else
y = viewwindowy+4;
V_DrawPatchDirect(viewwindowx+(scaledviewwidth-68)/2,
y,0,W_CacheLumpName ("M_PAUSE", PU_CACHE));
}
// menus go directly to the screen
M_Drawer (); // menu is drawn even on top of everything
NetUpdate (); // send out any new accumulation
// normal update
if (!wipe)
{
I_FinishUpdate (); // page flip or blit buffer
I_UpdateSound ();
return;
}
// wipe update
wipe_EndScreen(0, 0, SCREENWIDTH, SCREENHEIGHT);
wipestart = I_GetTime () - 1;
do
{
do
{
nowtime = I_GetTime ();
tics = nowtime - wipestart;
} while (!tics);
wipestart = nowtime;
done = wipe_ScreenWipe(wipe_Melt
, 0, 0, SCREENWIDTH, SCREENHEIGHT, tics);
I_UpdateNoBlit ();
M_Drawer (); // menu is drawn even on top of wipes
I_FinishUpdate (); // page flip or blit buffer
if (!done)
I_UpdateSound ();
} while (!done);
}
//
// D_DoomLoop
//
extern boolean demorecording;
void D_DoomLoop (void)
{
if (demorecording)
G_BeginRecording ();
if (M_CheckParm ("-debugfile"))
{
char filename[20];
sprintf (filename,"debug%i.txt",consoleplayer);
printf ("debug output to: %s\n",filename);
debugfile = fopen (filename,"w");
}
for(;;)
{
// frame syncronous IO operations
// I_StartFrame ();
// process one or more tics
if (singletics)
{
I_StartTic ();
D_ProcessEvents ();
G_BuildTiccmd (&netcmds[consoleplayer][maketic%BACKUPTICS]);
if (advancedemo)
D_DoAdvanceDemo ();
M_Ticker ();
G_Ticker ();
gametic++;
maketic++;
}
else
{
TryRunTics (); // will run at least one tic
}
S_UpdateSounds (players[consoleplayer].mo);// move positional sounds
// Update display, next frame, with current state.
D_Display ();
}
}
//
// DEMO LOOP
//
int demosequence;
int pagetic;
char *pagename;
//
// D_PageTicker
// Handles timing for warped projection
//
void D_PageTicker (void)
{
if (--pagetic < 0)
D_AdvanceDemo ();
}
//
// D_PageDrawer
//
void D_PageDrawer (void)
{
V_DrawPatch (0,0, 0, W_CacheLumpName(pagename, PU_CACHE));
}
//
// D_AdvanceDemo
// Called after each demo or intro demosequence finishes
//
void D_AdvanceDemo (void)
{
advancedemo = true;
}
//
// This cycles through the demo sequences.
// FIXME - version dependend demo numbers?
//
void D_DoAdvanceDemo (void)
{
players[consoleplayer].playerstate = PST_LIVE; // not reborn
advancedemo = false;
usergame = false; // no save / end game here
paused = false;
gameaction = ga_nothing;
if ( gamemode == retail )
demosequence = (demosequence+1)%7;
else
demosequence = (demosequence+1)%6;
switch (demosequence)
{
case 0:
if ( gamemode == commercial )
pagetic = 35 * 11;
else
pagetic = 170;
gamestate = GS_DEMOSCREEN;
pagename = "TITLEPIC";
if ( gamemode == commercial )
S_StartMusic(mus_dm2ttl);
else
S_StartMusic (mus_intro);
break;
case 1:
G_DeferedPlayDemo ("demo1");
break;
case 2:
pagetic = 200;
gamestate = GS_DEMOSCREEN;
pagename = "CREDIT";
break;
case 3:
G_DeferedPlayDemo ("demo2");
break;
case 4:
gamestate = GS_DEMOSCREEN;
if ( gamemode == commercial)
{
pagetic = 35 * 11;
pagename = "TITLEPIC";
S_StartMusic(mus_dm2ttl);
}
else
{
pagetic = 200;
if ( gamemode == retail )
pagename = "CREDIT";
else
pagename = "HELP2";
}
break;
case 5:
G_DeferedPlayDemo ("demo3");
break;
// THE DEFINITIVE DOOM Special Edition demo
case 6:
G_DeferedPlayDemo ("demo4");
break;
}
}
//
// D_StartTitle
//
void D_StartTitle (void)
{
gameaction = ga_nothing;
demosequence = -1;
D_AdvanceDemo ();
}
// print title for every printed line
char title[128];
//
// D_AddFile
//
void D_AddFile (char *file)
{
int numwadfiles;
char *newfile;
for (numwadfiles = 0 ; wadfiles[numwadfiles] ; numwadfiles++)
;
newfile = malloc (strlen(file)+1);
strcpy (newfile, file);
wadfiles[numwadfiles] = newfile;
}
//
// IdentifyVersion
// Checks availability of IWAD files by name,
// to determine whether registered/commercial features
// should be executed (notably loading PWAD's).
//
void IdentifyVersion (void)
{
char *wadfile, *slash;
if (M_CheckParm ("-shdev"))
{
I_Error("PORTME d_main.c IdentifyVersion -shdev");
/*
gamemode = shareware;
devparm = true;
D_AddFile (DEVDATA"doom1.wad");
D_AddFile (DEVMAPS"data_se/texture1.lmp");
D_AddFile (DEVMAPS"data_se/pnames.lmp");
strcpy (basedefault,DEVDATA"default.cfg");
return;
*/
}
if (M_CheckParm ("-regdev"))
{
I_Error("PORTME d_main.c IdentifyVersion -regdev");
/*
gamemode = registered;
devparm = true;
D_AddFile (DEVDATA"doom.wad");
D_AddFile (DEVMAPS"data_se/texture1.lmp");
D_AddFile (DEVMAPS"data_se/texture2.lmp");
D_AddFile (DEVMAPS"data_se/pnames.lmp");
strcpy (basedefault,DEVDATA"default.cfg");
return;
*/
}
if (M_CheckParm ("-comdev"))
{
I_Error("PORTME d_main.c IdentifyVersion -comdev");
/*
gamemode = commercial;
devparm = true;
D_AddFile (DEVDATA"doom2.wad");
D_AddFile (DEVMAPS"cdata/texture1.lmp");
D_AddFile (DEVMAPS"cdata/pnames.lmp");
strcpy (basedefault,DEVDATA"default.cfg");
return;
*/
}
if ( (wadfile = I_IdentifyWAD("doom2f.wad")) ) {
gamemode = commercial;
// C'est ridicule!
// Let's handle languages in config files, okay?
language = french;
printf("French version\n");
D_AddFile (wadfile);
} else if ( (wadfile = I_IdentifyWAD("doom2.wad")) ) {
gamemode = commercial;
D_AddFile (wadfile);
} else if ( (wadfile = I_IdentifyWAD("plutonia.wad")) ) {
gamemode = commercial;
D_AddFile (wadfile);
} else if ( (wadfile = I_IdentifyWAD("tnt.wad")) ) {
gamemode = commercial;
D_AddFile (wadfile);
} else if ( (wadfile = I_IdentifyWAD("doomu.wad")) ) {
gamemode = retail;
D_AddFile (wadfile);
} else if ( (wadfile = I_IdentifyWAD("doom.wad")) ) {
gamemode = registered;
D_AddFile (wadfile);
} else if ( (wadfile = I_IdentifyWAD("doom1.wad")) ) {
gamemode = shareware;
D_AddFile (wadfile);
} else {
printf("Game mode indeterminate.\n");
gamemode = indetermined;
return;
}
strncpy(basedefault, wadfile, sizeof(basedefault)-5);
basedefault[sizeof(basedefault)-5] = '\0';
slash = strrchr(basedefault, '/');
if (slash++ == 0)
slash = basedefault;
strcpy(slash, "cfg");
}
//
// Find a Response File
//
void FindResponseFile (void)
{
int i;
#define MAXARGVS 100
for (i = 1;i < myargc;i++)
if (myargv[i][0] == '@')
{
FILE * handle;
int size;
int k;
int index;
int indexinfile;
char *infile;
char *file;
char *moreargs[20];
char *firstargv;
// READ THE RESPONSE FILE INTO MEMORY
handle = fopen (&myargv[i][1],"rb");
if (!handle)
{
fprint(2, "No such response file!\n");
exits("open");
}
printf("Found response file %s!\n",&myargv[i][1]);
fseek (handle,0,SEEK_END);
size = ftell(handle);
fseek (handle,0,SEEK_SET);
file = malloc (size);
fread (file,size,1,handle);
fclose (handle);
// KEEP ALL CMDLINE ARGS FOLLOWING @RESPONSEFILE ARG
for (index = 0,k = i+1; k < myargc; k++)
moreargs[index++] = myargv[k];
firstargv = myargv[0];
myargv = malloc(sizeof(char *)*MAXARGVS);
memset(myargv,0,sizeof(char *)*MAXARGVS);
myargv[0] = firstargv;
infile = file;
indexinfile = k = 0;
indexinfile++; // SKIP PAST ARGV[0] (KEEP IT)
do
{
myargv[indexinfile++] = infile+k;
while(k < size &&
((*(infile+k)>= ' '+1) && (*(infile+k)<='z')))
k++;
*(infile+k) = 0;
while(k < size &&
((*(infile+k)<= ' ') || (*(infile+k)>'z')))
k++;
} while(k < size);
for (k = 0;k < index;k++)
myargv[indexinfile++] = moreargs[k];
myargc = indexinfile;
// DISPLAY ARGS
printf("%d command-line args:\n",myargc);
for (k=1;k<myargc;k++)
printf("%s\n",myargv[k]);
break;
}
}
//
// D_DoomMain
//
void D_DoomMain (void)
{
int p;
char file[256];
FindResponseFile ();
IdentifyVersion ();
setbuf (stdout, NULL);
modifiedgame = false;
nomonsters = M_CheckParm ("-nomonsters");
respawnparm = M_CheckParm ("-respawn");
fastparm = M_CheckParm ("-fast");
devparm = M_CheckParm ("-devparm");
if (M_CheckParm ("-noztele") && gamemode == commercial)
noztele = 1;
if (M_CheckParm ("-nobounce") && (gamemode == commercial || gamemode == registered))
nobounce = 1;
if (M_CheckParm ("-altdeath"))
deathmatch = 2;
else if (M_CheckParm ("-deathmatch"))
deathmatch = 1;
switch ( gamemode )
{
case retail:
sprintf (title,
" "
"The Ultimate DOOM Startup v%i.%i"
" ",
VERSION/100,VERSION%100);
break;
case shareware:
sprintf (title,
" "
"DOOM Shareware Startup v%i.%i"
" ",
VERSION/100,VERSION%100);
break;
case registered:
sprintf (title,
" "
"DOOM Registered Startup v%i.%i"
" ",
VERSION/100,VERSION%100);
break;
case commercial:
sprintf (title,
" "
"DOOM 2: Hell on Earth v%i.%i"
" ",
VERSION/100,VERSION%100);
break;
/*FIXME
case pack_plut:
sprintf (title,
" "
"DOOM 2: Plutonia Experiment v%i.%i"
" ",
VERSION/100,VERSION%100);
break;
case pack_tnt:
sprintf (title,
" "
"DOOM 2: TNT - Evilution v%i.%i"
" ",
VERSION/100,VERSION%100);
break;
*/
default:
sprintf (title,
" "
"Public DOOM - v%i.%i"
" ",
VERSION/100,VERSION%100);
break;
}
printf ("%s\n",title);
if (devparm)
printf(D_DEVSTR);
// turbo option
if ( (p=M_CheckParm ("-turbo")) )
{
int scale = 200;
extern int forwardmove[2];
extern int sidemove[2];
if (p<myargc-1)
scale = atoi (myargv[p+1]);
if (scale < 10)
scale = 10;
if (scale > 400)
scale = 400;
printf ("turbo scale: %i%%\n",scale);
forwardmove[0] = forwardmove[0]*scale/100;
forwardmove[1] = forwardmove[1]*scale/100;
sidemove[0] = sidemove[0]*scale/100;
sidemove[1] = sidemove[1]*scale/100;
}
// add any files specified on the command line with -file wadfile
// to the wad list
//
// convenience hack to allow -wart e m to add a wad file
// prepend a tilde to the filename so wadfile will be reloadable
p = M_CheckParm ("-wart");
if (p)
{
myargv[p][4] = 'p'; // big hack, change to -warp
// Map name handling.
switch (gamemode )
{
case shareware:
case retail:
case registered:
sprintf (file,"~"DEVMAPS"E%cM%c.wad",
myargv[p+1][0], myargv[p+2][0]);
printf("Warping to Episode %s, Map %s.\n",
myargv[p+1],myargv[p+2]);
break;
case commercial:
default:
p = atoi (myargv[p+1]);
if (p<10)
sprintf (file,"~"DEVMAPS"cdata/map0%i.wad", p);
else
sprintf (file,"~"DEVMAPS"cdata/map%i.wad", p);
break;
}
D_AddFile (file);
}
p = M_CheckParm ("-file");
if (p)
{
// the parms after p are wadfile/lump names,
// until end of parms or another - preceded parm
modifiedgame = true; // homebrew levels
while (++p != myargc && myargv[p][0] != '-')
D_AddFile (myargv[p]);
}
p = M_CheckParm ("-playdemo");
if (!p)
p = M_CheckParm ("-timedemo");
if (p && p < myargc-1)
{
sprintf (file,"%s.lmp", myargv[p+1]);
D_AddFile (file);
printf("Playing demo %s.lmp.\n",myargv[p+1]);
}
// get skill / episode / map from parms
startskill = sk_medium;
startepisode = 1;
startmap = 1;
autostart = false;
p = M_CheckParm ("-skill");
if (p && p < myargc-1)
{
startskill = myargv[p+1][0]-'1';
autostart = true;
}
p = M_CheckParm ("-episode");
if (p && p < myargc-1)
{
startepisode = myargv[p+1][0]-'0';
startmap = 1;
autostart = true;
}
p = M_CheckParm ("-timer");
if (p && p < myargc-1 && deathmatch)
{
int time;
time = atoi(myargv[p+1]);
printf("Levels will end after %d minute",time);
if (time>1)
printf("s");
printf(".\n");
}
p = M_CheckParm ("-avg");
if (p && p < myargc-1 && deathmatch)
printf("Austin Virtual Gaming: Levels will end after 20 minutes\n");
p = M_CheckParm ("-warp");
if (p && p < myargc-1)
{
startmap = atoi (myargv[p+1]);
if (gamemode != commercial){
startepisode = startmap / 10;
startmap %= 10;
}
autostart = true;
}
// init subsystems
printf ("V_Init: allocate screens.\n");
V_Init ();
printf ("M_LoadDefaults: Load system defaults.\n");
M_LoadDefaults (); // load before initing other systems
printf ("Z_Init: Init zone memory allocation daemon. \n");
Z_Init ();
printf ("W_Init: Init WADfiles.\n");
W_InitMultipleFiles (wadfiles);
// Check for -file in shareware
if (modifiedgame)
{
// These are the lumps that will be checked in IWAD,
// if any one is not present, execution will be aborted.
char name[23][8]=
{
"e2m1","e2m2","e2m3","e2m4","e2m5","e2m6","e2m7","e2m8","e2m9",
"e3m1","e3m3","e3m3","e3m4","e3m5","e3m6","e3m7","e3m8","e3m9",
"dphoof","bfgga0","heada1","cybra1","spida1d1"
};
int i;
if ( gamemode == shareware)
I_Error("\nYou cannot -file with the shareware "
"version. Register!");
// Check for fake IWAD with right name,
// but w/o all the lumps of the registered version.
if (gamemode == registered)
for (i = 0;i < 23; i++)
if (W_CheckNumForName(name[i])<0)
I_Error("\nThis is not the registered version.");
}
// Iff additonal PWAD files are used, print modified banner
if (modifiedgame)
{
/*m*/printf (
"===========================================================================\n"
"ATTENTION: This version of DOOM has been modified. If you would like to\n"
"get a copy of the original game, call 1-800-IDGAMES or see the readme file.\n"
" You will not receive technical support for modified games.\n"
" press enter to continue\n"
"===========================================================================\n"
);
USED( getchar () );
}
// Check and print which version is executed.
switch ( gamemode )
{
case shareware:
case indetermined:
printf (
"===========================================================================\n"
" Shareware!\n"
"===========================================================================\n"
);
break;
case registered:
case retail:
case commercial:
printf (
"===========================================================================\n"
" Commercial product - do not distribute!\n"
" Please report software piracy to the SPA: 1-800-388-PIR8\n"
"===========================================================================\n"
);
break;
default:
// Ouch.
break;
}
printf ("M_Init: Init miscellaneous info.\n");
M_Init ();
printf ("R_Init: Init DOOM refresh daemon - ");
R_Init ();
printf ("\nP_Init: Init Playloop state.\n");
P_Init ();
printf ("I_Init: Setting up machine state.\n");
I_Init ();
printf ("D_CheckNetGame: Checking network game status.\n");
D_CheckNetGame ();
printf ("S_Init: Setting up sound.\n");
S_Init (snd_SfxVolume /* *8 */, snd_MusicVolume /* *8*/ );
printf ("HU_Init: Setting up heads up display.\n");
HU_Init ();
printf ("ST_Init: Init status bar.\n");
ST_Init ();
// check for a driver that wants intermission stats
p = M_CheckParm ("-statcopy");
if (p && p<myargc-1)
{
// for statistics driver
extern void* statcopy;
statcopy = (void*)atoi(myargv[p+1]);
printf ("External statistics registered.\n");
}
// start the apropriate game based on parms
p = M_CheckParm ("-record");
if (p && p < myargc-1)
{
G_RecordDemo (myargv[p+1]);
autostart = true;
}
p = M_CheckParm ("-playdemo");
if (p && p < myargc-1)
{
singledemo = true; // quit after one demo
G_DeferedPlayDemo (myargv[p+1]);
D_DoomLoop (); // never returns
}
p = M_CheckParm ("-timedemo");
if (p && p < myargc-1)
{
G_TimeDemo (myargv[p+1]);
D_DoomLoop (); // never returns
}
p = M_CheckParm ("-loadgame");
if (p && p < myargc-1)
{
sprintf(file, SAVEGAMENAME"%c.dsg",myargv[p+1][0]);
G_LoadGame (file);
}
if ( gameaction != ga_loadgame )
{
if (autostart || netgame)
G_InitNew (startskill, startepisode, startmap);
else
D_StartTitle (); // start up intro loop
}
D_DoomLoop (); // never returns
}