d_main.c

doom游戏

    char *home;
    char *doomwaddir;
    doomwaddir = getenv("DOOMWADDIR");
    if (!doomwaddir)
	doomwaddir = ".";

    // Commercial.
    doom2wad = malloc(strlen(doomwaddir)+1+9+1);
    sprintf(doom2wad, "%s/doom2.wad", doomwaddir);

    // Retail.
    doomuwad = malloc(strlen(doomwaddir)+1+8+1);
    sprintf(doomuwad, "%s/doomu.wad", doomwaddir);
    
    // Registered.
    doomwad = malloc(strlen(doomwaddir)+1+8+1);
    sprintf(doomwad, "%s/doom.wad", doomwaddir);
    
    // Shareware.
    doom1wad = malloc(strlen(doomwaddir)+1+9+1);
    sprintf(doom1wad, "%s/doom1.wad", doomwaddir);

     // Bug, dear Shawn.
    // Insufficient malloc, caused spurious realloc errors.
    plutoniawad = malloc(strlen(doomwaddir)+1+/*9*/12+1);
    sprintf(plutoniawad, "%s/plutonia.wad", doomwaddir);

    tntwad = malloc(strlen(doomwaddir)+1+9+1);
    sprintf(tntwad, "%s/tnt.wad", doomwaddir);


    // French stuff.
    doom2fwad = malloc(strlen(doomwaddir)+1+10+1);
    sprintf(doom2fwad, "%s/doom2f.wad", doomwaddir);

    home = getenv("HOME");
    if (!home)
      home = ".";
    sprintf(basedefault, "%s/.doomrc", home);

    if (M_CheckParm ("-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"))
    {
	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"))
    {
	gamemode = commercial;
	devparm = true;
	/* I don't bother
	if(plutonia)
	    D_AddFile (DEVDATA"plutonia.wad");
	else if(tnt)
	    D_AddFile (DEVDATA"tnt.wad");
	else*/
	    D_AddFile (DEVDATA"doom2.wad");
	    
	D_AddFile (DEVMAPS"cdata/texture1.lmp");
	D_AddFile (DEVMAPS"cdata/pnames.lmp");
	strcpy (basedefault,DEVDATA"default.cfg");
	return;
    }

    if ( !access (doom2fwad,R_OK) )
    {
	gamemode = commercial;
	// C'est ridicule!
	// Let's handle languages in config files, okay?
	language = french;
	printf("French version\n");
	D_AddFile (doom2fwad);
	return;
    }

    if ( !access (doom2wad,R_OK) )
    {
	gamemode = commercial;
	D_AddFile (doom2wad);
	return;
    }

    if ( !access (plutoniawad, R_OK ) )
    {
      gamemode = commercial;
      D_AddFile (plutoniawad);
      return;
    }

    if ( !access ( tntwad, R_OK ) )
    {
      gamemode = commercial;
      D_AddFile (tntwad);
      return;
    }

    if ( !access (doomuwad,R_OK) )
    {
      gamemode = retail;
      D_AddFile (doomuwad);
      return;
    }

    if ( !access (doomwad,R_OK) )
    {
      gamemode = registered;
      D_AddFile (doomwad);
      return;
    }

    if ( !access (doom1wad,R_OK) )
    {
      gamemode = shareware;
      D_AddFile (doom1wad);
      return;
    }

    printf("Game mode indeterminate.\n");
    gamemode = indetermined;

    // We don't abort. Let's see what the PWAD contains.
    //exit(1);
    //I_Error ("Game mode indeterminate\n");
}

//
// 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)
	    {
		printf ("\nNo such response file!");
		exit(1);
	    }
	    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 ("-altdeath"))
	deathmatch = 2;
    else if (M_CheckParm ("-deathmatch"))
	deathmatch = 1;

    switch ( gamemode )
    {
      case retail:
	sprintf (title,
		 "                         "
		 "The Ultimate DOOM Startup v%i.%i"
		 "                           ",
		 VERSION_NUM/100,VERSION_NUM%100);
	break;
      case shareware:
	sprintf (title,
		 "                            "
		 "DOOM Shareware Startup v%i.%i"
		 "                           ",
		 VERSION_NUM/100,VERSION_NUM%100);
	break;
      case registered:
	sprintf (title,
		 "                            "
		 "DOOM Registered Startup v%i.%i"
		 "                           ",
		 VERSION_NUM/100,VERSION_NUM%100);
	break;
      case commercial:
	sprintf (title,
		 "                         "
		 "DOOM 2: Hell on Earth v%i.%i"
		 "                           ",
		 VERSION_NUM/100,VERSION_NUM%100);
	break;
/*FIXME
       case pack_plut:
	sprintf (title,
		 "                   "
		 "DOOM 2: Plutonia Experiment v%i.%i"
		 "                           ",
		 VERSION_NUM/100,VERSION_NUM%100);
	break;
      case pack_tnt:
	sprintf (title,
		 "                     "
		 "DOOM 2: TNT - Evilution v%i.%i"
		 "                           ",
		 VERSION_NUM/100,VERSION_NUM%100);
	break;
*/
      default:
	sprintf (title,
		 "                     "
		 "Public DOOM - v%i.%i"
		 "                           ",
		 VERSION_NUM/100,VERSION_NUM%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)
    {
	if (gamemode == commercial)
	    startmap = atoi (myargv[p+1]);
	else
	{
	    startepisode = myargv[p+1][0]-'0';
	    startmap = myargv[p+2][0]-'0';
	}
	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);
printf("added\n");
    

    // 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"
	    );
	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)
    {
	if (M_CheckParm("-cdrom"))
	    sprintf(file, "c:\\doomdata\\"SAVEGAMENAME"%c.dsg",myargv[p+1][0]);
	else
	    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
}