host.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // host.c -- coordinates spawning and killing of local servers
  21
  22 #include <time.h>
  23 #include "quakedef.h"
  24 #include "cdaudio.h"
  25 #include "cl_video.h"
  26 #include "progsvm.h"
  27 #include "csprogs.h"
  28
  29 /*
  30
  31 A server can always be started, even if the system started out as a client
  32 to a remote system.
  33
  34 A client can NOT be started if the system started as a dedicated server.
  35
  36 Memory is cleared / released when a server or client begins, not when they end.
  37
  38 */
  39
  40 // how many frames have occurred
  41 // (checked by Host_Error and Host_SaveConfig_f)
  42 int host_framecount = 0;
  43 // LordHavoc: set when quit is executed
  44 qboolean host_shuttingdown = false;
  45
  46 // the real time since application started, without any slowmo or clamping
  47 double realtime;
  48
  49 // current client
  50 client_t *host_client;
  51
  52 jmp_buf host_abortframe;
  53
  54 // pretend frames take this amount of time (in seconds), 0 = realtime
  55 cvar_t host_framerate = {0, "host_framerate","0", "locks frame timing to this value in seconds, 0.05 is 20fps for example, note that this can easily run too fast, use host_maxfps if you want to limit your framerate instead, or sys_ticrate to limit server speed"};
  56 // shows time used by certain subsystems
  57 cvar_t host_speeds = {0, "host_speeds","0", "reports how much time is used in server/graphics/sound"};
  58 // LordHavoc: framerate independent slowmo
  59 cvar_t slowmo = {0, "slowmo", "1.0", "controls game speed, 0.5 is half speed, 2 is double speed"};
  60 // LordHavoc: framerate upper cap
  61 cvar_t cl_maxfps = {CVAR_SAVE, "cl_maxfps", "1000", "maximum fps cap, if game is running faster than this it will wait before running another frame (useful to make cpu time available to other programs)"};
  62
  63 // print broadcast messages in dedicated mode
  64 cvar_t sv_echobprint = {CVAR_SAVE, "sv_echobprint", "1", "prints gamecode bprint() calls to server console"};
  65
  66 cvar_t sys_ticrate = {CVAR_SAVE, "sys_ticrate","0.05", "how long a server frame is in seconds, 0.05 is 20fps server rate, 0.1 is 10fps (can not be set higher than 0.1), 0 runs as many server frames as possible (makes games against bots a little smoother, overwhelms network players)"};
  67 cvar_t sv_fixedframeratesingleplayer = {0, "sv_fixedframeratesingleplayer", "0", "allows you to use server-style timing system in singleplayer (don't run faster than sys_ticrate)"};
  68
  69 cvar_t fraglimit = {CVAR_NOTIFY, "fraglimit","0", "ends level if this many frags is reached by any player"};
  70 cvar_t timelimit = {CVAR_NOTIFY, "timelimit","0", "ends level at this time (in minutes)"};
  71 cvar_t teamplay = {CVAR_NOTIFY, "teamplay","0", "teamplay mode, values depend on mod but typically 0 = no teams, 1 = no team damage no self damage, 2 = team damage and self damage, some mods support 3 = no team damage but can damage self"};
  72
  73 cvar_t samelevel = {CVAR_NOTIFY, "samelevel","0", "repeats same level if level ends (due to timelimit or someone hitting an exit)"};
  74 cvar_t noexit = {CVAR_NOTIFY, "noexit","0", "kills anyone attempting to use an exit"};
  75
  76 cvar_t developer = {0, "developer","0", "prints additional debugging messages and information (recommended for modders and level designers)"};
  77 cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
  78
  79 cvar_t skill = {0, "skill","1", "difficulty level of game, affects monster layouts in levels, 0 = easy, 1 = normal, 2 = hard, 3 = nightmare (same layout as hard but monsters fire twice)"};
  80 cvar_t deathmatch = {0, "deathmatch","0", "deathmatch mode, values depend on mod but typically 0 = no deathmatch, 1 = normal deathmatch with respawning weapons, 2 = weapons stay (players can only pick up new weapons)"};
  81 cvar_t coop = {0, "coop","0", "coop mode, 0 = no coop, 1 = coop mode, multiple players playing through the singleplayer game (coop mode also shuts off deathmatch)"};
  82
  83 cvar_t pausable = {0, "pausable","1", "allow players to pause or not"};
  84
  85 cvar_t temp1 = {0, "temp1","0", "general cvar for mods to use, in stock id1 this selects which death animation to use on players (0 = random death, other values select specific death scenes)"};
  86
  87 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
  88 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%b %e %X] ", "time format to use on timestamped console messages"};
  89
  90 /*
  91 ================
  92 Host_AbortCurrentFrame
  93
  94 aborts the current host frame and goes on with the next one
  95 ================
  96 */
  97 void Host_AbortCurrentFrame(void)
  98 {
  99         longjmp (host_abortframe, 1);
 100 }
 101
 102 /*
 103 ================
 104 Host_Error
 105
 106 This shuts down both the client and server
 107 ================
 108 */
 109 void Host_Error (const char *error, ...)
 110 {
 111         static char hosterrorstring1[MAX_INPUTLINE];
 112         static char hosterrorstring2[MAX_INPUTLINE];
 113         static qboolean hosterror = false;
 114         va_list argptr;
 115
 116         // turn off rcon redirect if it was active when the crash occurred
 117         rcon_redirect = false;
 118
 119         va_start (argptr,error);
 120         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
 121         va_end (argptr);
 122
 123         Con_Printf("Host_Error: %s\n", hosterrorstring1);
 124
 125         // LordHavoc: if crashing very early, or currently shutting down, do
 126         // Sys_Error instead
 127         if (host_framecount < 3 || host_shuttingdown)
 128                 Sys_Error ("Host_Error: %s", hosterrorstring1);
 129
 130         if (hosterror)
 131                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
 132         hosterror = true;
 133
 134         strcpy(hosterrorstring2, hosterrorstring1);
 135
 136         CL_Parse_DumpPacket();
 137
 138         CL_Parse_ErrorCleanUp();
 139
 140         //PR_Crash();
 141
 142         // print out where the crash happened, if it was caused by QC (and do a cleanup)
 143         PRVM_Crash();
 144
 145
 146         Host_ShutdownServer ();
 147
 148         if (cls.state == ca_dedicated)
 149                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
 150
 151         CL_Disconnect ();
 152         cls.demonum = -1;
 153
 154         hosterror = false;
 155
 156         Host_AbortCurrentFrame();
 157 }
 158
 159 void Host_ServerOptions (void)
 160 {
 161         int i;
 162
 163         // general default
 164         svs.maxclients = 8;
 165
 166 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
 167 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
 168         // if no client is in the executable or -dedicated is specified on
 169         // commandline, start a dedicated server
 170         i = COM_CheckParm ("-dedicated");
 171         if (i || !cl_available)
 172         {
 173                 cls.state = ca_dedicated;
 174                 // check for -dedicated specifying how many players
 175                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 176                         svs.maxclients = atoi (com_argv[i+1]);
 177                 if (COM_CheckParm ("-listen"))
 178                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
 179                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
 180                 Cvar_SetValue("sv_public", 1);
 181         }
 182         else if (cl_available)
 183         {
 184                 // client exists and not dedicated, check if -listen is specified
 185                 cls.state = ca_disconnected;
 186                 i = COM_CheckParm ("-listen");
 187                 if (i)
 188                 {
 189                         // default players unless specified
 190                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 191                                 svs.maxclients = atoi (com_argv[i+1]);
 192                 }
 193                 else
 194                 {
 195                         // default players in some games, singleplayer in most
 196                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_BATTLEMECH)
 197                                 svs.maxclients = 1;
 198                 }
 199         }
 200
 201         svs.maxclients = bound(1, svs.maxclients, MAX_SCOREBOARD);
 202
 203         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
 204
 205         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
 206                 Cvar_SetValueQuick(&deathmatch, 1);
 207 }
 208
 209 /*
 210 =======================
 211 Host_InitLocal
 212 ======================
 213 */
 214 void Host_SaveConfig_f(void);
 215 static void Host_InitLocal (void)
 216 {
 217         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg immediately (also automatic when quitting)");
 218
 219         Cvar_RegisterVariable (&host_framerate);
 220         Cvar_RegisterVariable (&host_speeds);
 221         Cvar_RegisterVariable (&slowmo);
 222         Cvar_RegisterVariable (&cl_maxfps);
 223
 224         Cvar_RegisterVariable (&sv_echobprint);
 225
 226         Cvar_RegisterVariable (&sys_ticrate);
 227         Cvar_RegisterVariable (&sv_fixedframeratesingleplayer);
 228
 229         Cvar_RegisterVariable (&fraglimit);
 230         Cvar_RegisterVariable (&timelimit);
 231         Cvar_RegisterVariable (&teamplay);
 232         Cvar_RegisterVariable (&samelevel);
 233         Cvar_RegisterVariable (&noexit);
 234         Cvar_RegisterVariable (&skill);
 235         Cvar_RegisterVariable (&developer);
 236         Cvar_RegisterVariable (&developer_entityparsing);
 237         Cvar_RegisterVariable (&deathmatch);
 238         Cvar_RegisterVariable (&coop);
 239
 240         Cvar_RegisterVariable (&pausable);
 241
 242         Cvar_RegisterVariable (&temp1);
 243
 244         Cvar_RegisterVariable (&timestamps);
 245         Cvar_RegisterVariable (&timeformat);
 246 }
 247
 248
 249 /*
 250 ===============
 251 Host_SaveConfig_f
 252
 253 Writes key bindings and archived cvars to config.cfg
 254 ===============
 255 */
 256 void Host_SaveConfig_f(void)
 257 {
 258         qfile_t *f;
 259
 260 // dedicated servers initialize the host but don't parse and set the
 261 // config.cfg cvars
 262         // LordHavoc: don't save a config if it crashed in startup
 263         if (host_framecount >= 3 && cls.state != ca_dedicated)
 264         {
 265                 f = FS_Open ("config.cfg", "wb", false, false);
 266                 if (!f)
 267                 {
 268                         Con_Print("Couldn't write config.cfg.\n");
 269                         return;
 270                 }
 271
 272                 Key_WriteBindings (f);
 273                 Cvar_WriteVariables (f);
 274
 275                 FS_Close (f);
 276         }
 277 }
 278
 279
 280 /*
 281 =================
 282 SV_ClientPrint
 283
 284 Sends text across to be displayed
 285 FIXME: make this just a stuffed echo?
 286 =================
 287 */
 288 void SV_ClientPrint(const char *msg)
 289 {
 290         if (host_client->netconnection)
 291         {
 292                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
 293                 MSG_WriteString(&host_client->netconnection->message, msg);
 294         }
 295 }
 296
 297 /*
 298 =================
 299 SV_ClientPrintf
 300
 301 Sends text across to be displayed
 302 FIXME: make this just a stuffed echo?
 303 =================
 304 */
 305 void SV_ClientPrintf(const char *fmt, ...)
 306 {
 307         va_list argptr;
 308         char msg[MAX_INPUTLINE];
 309
 310         va_start(argptr,fmt);
 311         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 312         va_end(argptr);
 313
 314         SV_ClientPrint(msg);
 315 }
 316
 317 /*
 318 =================
 319 SV_BroadcastPrint
 320
 321 Sends text to all active clients
 322 =================
 323 */
 324 void SV_BroadcastPrint(const char *msg)
 325 {
 326         int i;
 327         client_t *client;
 328
 329         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
 330         {
 331                 if (client->spawned && client->netconnection)
 332                 {
 333                         MSG_WriteByte(&client->netconnection->message, svc_print);
 334                         MSG_WriteString(&client->netconnection->message, msg);
 335                 }
 336         }
 337
 338         if (sv_echobprint.integer && cls.state == ca_dedicated)
 339                 Con_Print(msg);
 340 }
 341
 342 /*
 343 =================
 344 SV_BroadcastPrintf
 345
 346 Sends text to all active clients
 347 =================
 348 */
 349 void SV_BroadcastPrintf(const char *fmt, ...)
 350 {
 351         va_list argptr;
 352         char msg[MAX_INPUTLINE];
 353
 354         va_start(argptr,fmt);
 355         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 356         va_end(argptr);
 357
 358         SV_BroadcastPrint(msg);
 359 }
 360
 361 /*
 362 =================
 363 Host_ClientCommands
 364
 365 Send text over to the client to be executed
 366 =================
 367 */
 368 void Host_ClientCommands(const char *fmt, ...)
 369 {
 370         va_list argptr;
 371         char string[MAX_INPUTLINE];
 372
 373         if (!host_client->netconnection)
 374                 return;
 375
 376         va_start(argptr,fmt);
 377         dpvsnprintf(string, sizeof(string), fmt, argptr);
 378         va_end(argptr);
 379
 380         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
 381         MSG_WriteString(&host_client->netconnection->message, string);
 382 }
 383
 384 /*
 385 =====================
 386 SV_DropClient
 387
 388 Called when the player is getting totally kicked off the host
 389 if (crash = true), don't bother sending signofs
 390 =====================
 391 */
 392 void SV_DropClient(qboolean crash)
 393 {
 394         int i;
 395         Con_Printf("Client \"%s\" dropped\n", host_client->name);
 396
 397         // make sure edict is not corrupt (from a level change for example)
 398         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
 399
 400         if (host_client->netconnection)
 401         {
 402                 // free the client (the body stays around)
 403                 if (!crash)
 404                 {
 405                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
 406                         unsigned char bufdata[8];
 407                         sizebuf_t buf;
 408                         memset(&buf, 0, sizeof(buf));
 409                         buf.data = bufdata;
 410                         buf.maxsize = sizeof(bufdata);
 411                         MSG_WriteByte(&buf, svc_disconnect);
 412                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol);
 413                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol);
 414                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol);
 415                 }
 416                 // break the net connection
 417                 NetConn_Close(host_client->netconnection);
 418                 host_client->netconnection = NULL;
 419         }
 420
 421         // call qc ClientDisconnect function
 422         // LordHavoc: don't call QC if server is dead (avoids recursive
 423         // Host_Error in some mods when they run out of edicts)
 424         if (host_client->clientconnectcalled && sv.active && host_client->edict)
 425         {
 426                 // call the prog function for removing a client
 427                 // this will set the body to a dead frame, among other things
 428                 int saveSelf = prog->globals.server->self;
 429                 host_client->clientconnectcalled = false;
 430                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
 431                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
 432                 prog->globals.server->self = saveSelf;
 433         }
 434
 435         // remove leaving player from scoreboard
 436         //host_client->edict->fields.server->netname = PRVM_SetEngineString(host_client->name);
 437         //if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_clientcolors)))
 438         //      val->_float = 0;
 439         //host_client->edict->fields.server->frags = 0;
 440         host_client->name[0] = 0;
 441         host_client->colors = 0;
 442         host_client->frags = 0;
 443         // send notification to all clients
 444         // get number of client manually just to make sure we get it right...
 445         i = host_client - svs.clients;
 446         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
 447         MSG_WriteByte (&sv.reliable_datagram, i);
 448         MSG_WriteString (&sv.reliable_datagram, host_client->name);
 449         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
 450         MSG_WriteByte (&sv.reliable_datagram, i);
 451         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
 452         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
 453         MSG_WriteByte (&sv.reliable_datagram, i);
 454         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
 455
 456         // free the client now
 457         if (host_client->entitydatabase)
 458                 EntityFrame_FreeDatabase(host_client->entitydatabase);
 459         if (host_client->entitydatabase4)
 460                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
 461         if (host_client->entitydatabase5)
 462                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
 463
 464         if (sv.active)
 465         {
 466                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
 467                 PRVM_ED_ClearEdict(host_client->edict);
 468         }
 469
 470         // clear the client struct (this sets active to false)
 471         memset(host_client, 0, sizeof(*host_client));
 472
 473         // update server listing on the master because player count changed
 474         // (which the master uses for filtering empty/full servers)
 475         NetConn_Heartbeat(1);
 476 }
 477
 478 /*
 479 ==================
 480 Host_ShutdownServer
 481
 482 This only happens at the end of a game, not between levels
 483 ==================
 484 */
 485 void Host_ShutdownServer(void)
 486 {
 487         int i;
 488
 489         Con_DPrintf("Host_ShutdownServer\n");
 490
 491         if (!sv.active)
 492                 return;
 493
 494         NetConn_Heartbeat(2);
 495         NetConn_Heartbeat(2);
 496
 497 // make sure all the clients know we're disconnecting
 498         SV_VM_Begin();
 499         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 500                 if (host_client->active)
 501                         SV_DropClient(false); // server shutdown
 502         SV_VM_End();
 503
 504         NetConn_CloseServerPorts();
 505
 506         sv.active = false;
 507 //
 508 // clear structures
 509 //
 510         memset(&sv, 0, sizeof(sv));
 511         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
 512 }
 513
 514
 515 //============================================================================
 516
 517 /*
 518 ===================
 519 Host_GetConsoleCommands
 520
 521 Add them exactly as if they had been typed at the console
 522 ===================
 523 */
 524 void Host_GetConsoleCommands (void)
 525 {
 526         char *cmd;
 527
 528         while (1)
 529         {
 530                 cmd = Sys_ConsoleInput ();
 531                 if (!cmd)
 532                         break;
 533                 Cbuf_AddText (cmd);
 534         }
 535 }
 536
 537 /*
 538 ==================
 539 Host_Frame
 540
 541 Runs all active servers
 542 ==================
 543 */
 544 static void Host_Init(void);
 545 void Host_Main(void)
 546 {
 547         static double time1 = 0;
 548         static double time2 = 0;
 549         static double time3 = 0;
 550         // these are static because of setjmp/longjmp warnings in mingw32 gcc 2.95.3
 551         static double frameoldtime, framenewtime, frametime, cl_timer, sv_timer;
 552
 553         Host_Init();
 554
 555         cl_timer = 0;
 556         sv_timer = 0;
 557
 558         framenewtime = Sys_DoubleTime();
 559         for (;;)
 560         {
 561                 if (setjmp(host_abortframe))
 562                         continue;                       // something bad happened, or the server disconnected
 563
 564                 frameoldtime = framenewtime;
 565                 framenewtime = Sys_DoubleTime();
 566                 frametime = framenewtime - frameoldtime;
 567                 realtime += frametime;
 568
 569                 // if there is some time remaining from last frame, rest the timers
 570                 if (cl_timer >= 0)
 571                         cl_timer = 0;
 572                 if (sv_timer >= 0)
 573                         sv_timer = 0;
 574
 575                 // accumulate the new frametime into the timers
 576                 cl_timer += frametime;
 577                 sv_timer += frametime;
 578
 579                 if (slowmo.value < 0)
 580                         Cvar_SetValue("slowmo", 0);
 581                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
 582                         Cvar_SetValue("host_framerate", 0);
 583                 if (cl_maxfps.value < 1)
 584                         Cvar_SetValue("cl_maxfps", 1);
 585
 586                 // if the accumulators haven't become positive yet, keep waiting
 587                 if (!cls.timedemo && cl_timer <= 0 && sv_timer <= 0)
 588                 {
 589                         double wait;
 590                         int msleft;
 591                         if (cls.state == ca_dedicated)
 592                                 wait = sv_timer;
 593                         else if (!sv.active)
 594                                 wait = cl_timer;
 595                         else
 596                                 wait = max(cl_timer, sv_timer);
 597                         msleft = (int)floor(wait * -1000.0);
 598                         if (msleft >= 1)
 599                                 Sys_Sleep(msleft);
 600                         continue;
 601                 }
 602
 603                 // keep the random time dependent
 604                 rand();
 605
 606                 cl.islocalgame = NetConn_IsLocalGame();
 607
 608                 // get new key events
 609                 Sys_SendKeyEvents();
 610
 611                 // when a server is running we only execute console commands on server frames
 612                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
 613                 // otherwise we execute them on all frames
 614                 if (sv_timer > 0 || !sv.active)
 615                 {
 616                         // process console commands
 617                         Cbuf_Execute();
 618                 }
 619
 620                 NetConn_UpdateSockets();
 621
 622         //-------------------
 623         //
 624         // server operations
 625         //
 626         //-------------------
 627
 628                 if (sv_timer > 0)
 629                 {
 630                         if (!sv.active)
 631                         {
 632                                 // if there is no server, run server timing at 10fps
 633                                 sv_timer -= 0.1;
 634                         }
 635                         else
 636                         {
 637                                 // execute one or more server frames, with an upper limit on how much
 638                                 // execution time to spend on server frames to avoid freezing the game if
 639                                 // the server is overloaded, this execution time limit means the game will
 640                                 // slow down if the server is taking too long.
 641                                 int framecount, framelimit = 1;
 642                                 double advancetime, aborttime = 0;
 643
 644                                 // receive server packets now, which might contain rcon commands, which
 645                                 // may change level or other such things we don't want to have happen in
 646                                 // the middle of Host_Frame
 647                                 NetConn_ServerFrame();
 648
 649                                 // check for commands typed to the host
 650                                 Host_GetConsoleCommands();
 651
 652                                 // run the world state
 653                                 // don't allow simulation to run too fast or too slow or logic glitches can occur
 654
 655                                 // stop running server frames if the wall time reaches this value
 656                                 if (sys_ticrate.value <= 0)
 657                                         advancetime = sv_timer;
 658                                 else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
 659                                 {
 660                                         // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
 661                                         advancetime = bound(0.01, cl_timer, sys_ticrate.value);
 662                                         framelimit = 10;
 663                                         aborttime = Sys_DoubleTime() + 0.1;
 664                                 }
 665                                 else
 666                                 {
 667                                         advancetime = sys_ticrate.value;
 668                                         // listen servers can run multiple server frames per client frame
 669                                         if (cls.state == ca_connected)
 670                                         {
 671                                                 framelimit = 10;
 672                                                 aborttime = Sys_DoubleTime() + 0.1;
 673                                         }
 674                                 }
 675                                 advancetime = min(advancetime, 0.1);
 676
 677                                 // only advance time if not paused
 678                                 // the game also pauses in singleplayer when menu or console is used
 679                                 sv.frametime = advancetime * slowmo.value;
 680                                 if (host_framerate.value)
 681                                         sv.frametime = host_framerate.value;
 682                                 if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
 683                                         sv.frametime = 0;
 684
 685                                 // setup the VM frame
 686                                 SV_VM_Begin();
 687
 688                                 for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
 689                                 {
 690                                         sv_timer -= advancetime;
 691
 692                                         // move things around and think unless paused
 693                                         if (sv.frametime)
 694                                                 SV_Physics();
 695
 696                                         // send all messages to the clients
 697                                         SV_SendClientMessages();
 698
 699                                         // clear the general datagram
 700                                         SV_ClearDatagram();
 701
 702                                         // if this server frame took too long, break out of the loop
 703                                         if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
 704                                                 break;
 705                                 }
 706
 707                                 // end the server VM frame
 708                                 SV_VM_End();
 709
 710                                 // send an heartbeat if enough time has passed since the last one
 711                                 NetConn_Heartbeat(0);
 712                         }
 713                 }
 714
 715         //-------------------
 716         //
 717         // client operations
 718         //
 719         //-------------------
 720
 721                 if (cl_timer > 0 || cls.timedemo)
 722                 {
 723                         if (cls.state == ca_dedicated)
 724                         {
 725                                 // if there is no client, run client timing at 10fps
 726                                 cl_timer -= 0.1;
 727                                 if (host_speeds.integer)
 728                                         time1 = time2 = Sys_DoubleTime();
 729                         }
 730                         else
 731                         {
 732                                 double frametime;
 733                                 frametime = cl.realframetime = min(cl_timer, 1);
 734
 735                                 // decide the simulation time
 736                                 if (!cls.timedemo)
 737                                 {
 738                                         if (cls.capturevideo_active && !cls.capturevideo_soundfile)
 739                                         {
 740                                                 frametime = 1.0 / cls.capturevideo_framerate;
 741                                                 cl.realframetime = max(cl.realframetime, frametime);
 742                                         }
 743                                         else if (vid_activewindow)
 744                                                 frametime = cl.realframetime = max(cl.realframetime, 1.0 / cl_maxfps.value);
 745                                         else
 746                                                 frametime = cl.realframetime = 0.1;
 747
 748                                         // deduct the frame time from the accumulator
 749                                         cl_timer -= cl.realframetime;
 750
 751                                         // apply slowmo scaling
 752                                         frametime *= slowmo.value;
 753
 754                                         // host_framerate overrides all else
 755                                         if (host_framerate.value)
 756                                                 frametime = host_framerate.value;
 757                                 }
 758
 759                                 cl.oldtime = cl.time;
 760                                 cl.time += frametime;
 761
 762                                 // Collect input into cmd
 763                                 CL_Move();
 764
 765                                 NetConn_ClientFrame();
 766
 767                                 if (cls.state == ca_connected)
 768                                 {
 769                                         CL_ReadFromServer();
 770                                         // if running the server remotely, send intentions now after
 771                                         // the incoming messages have been read
 772                                         //if (!cl.islocalgame)
 773                                         //      CL_SendCmd();
 774                                 }
 775
 776                                 // update video
 777                                 if (host_speeds.integer)
 778                                         time1 = Sys_DoubleTime();
 779
 780                                 //ui_update();
 781
 782                                 CL_VideoFrame();
 783
 784                                 CL_UpdateScreen();
 785
 786                                 if (host_speeds.integer)
 787                                         time2 = Sys_DoubleTime();
 788
 789                                 // update audio
 790                                 if(csqc_usecsqclistener)
 791                                 {
 792                                         S_Update(&csqc_listenermatrix);
 793                                         csqc_usecsqclistener = false;
 794                                 }
 795                                 else
 796                                         S_Update(&r_view.matrix);
 797
 798                                 CDAudio_Update();
 799                         }
 800
 801                         if (host_speeds.integer)
 802                         {
 803                                 int pass1, pass2, pass3;
 804                                 pass1 = (int)((time1 - time3)*1000000);
 805                                 time3 = Sys_DoubleTime();
 806                                 pass2 = (int)((time2 - time1)*1000000);
 807                                 pass3 = (int)((time3 - time2)*1000000);
 808                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
 809                                                         pass1+pass2+pass3, pass1, pass2, pass3);
 810                         }
 811                 }
 812
 813                 host_framecount++;
 814         }
 815 }
 816
 817 //============================================================================
 818
 819 qboolean vid_opened = false;
 820 void Host_StartVideo(void)
 821 {
 822         if (!vid_opened && cls.state != ca_dedicated)
 823         {
 824                 vid_opened = true;
 825                 VID_Start();
 826                 CDAudio_Startup();
 827         }
 828 }
 829
 830 char engineversion[128];
 831
 832 qboolean sys_nostdout = false;
 833
 834 extern void Render_Init(void);
 835 extern void Mathlib_Init(void);
 836 extern void FS_Init(void);
 837 extern void FS_Shutdown(void);
 838 extern void PR_Cmd_Init(void);
 839 extern void COM_Init_Commands(void);
 840 extern void FS_Init_Commands(void);
 841 extern void COM_CheckRegistered(void);
 842 extern qboolean host_stuffcmdsrun;
 843
 844 /*
 845 ====================
 846 Host_Init
 847 ====================
 848 */
 849 static void Host_Init (void)
 850 {
 851         int i;
 852         const char* os;
 853
 854         // FIXME: this is evil, but possibly temporary
 855 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
 856         if (COM_CheckParm("-developer"))
 857         {
 858                 developer.value = developer.integer = 100;
 859                 developer.string = "100";
 860         }
 861
 862         if (COM_CheckParm("-developer2"))
 863         {
 864                 developer.value = developer.integer = 100;
 865                 developer.string = "100";
 866                 developer_memory.value = developer_memory.integer = 100;
 867                 developer.string = "100";
 868                 developer_memorydebug.value = developer_memorydebug.integer = 100;
 869                 developer_memorydebug.string = "100";
 870         }
 871
 872         // LordHavoc: quake never seeded the random number generator before... heh
 873         srand(time(NULL));
 874
 875         // used by everything
 876         Memory_Init();
 877
 878         // initialize console and logging
 879         Con_Init();
 880
 881         // initialize console command/cvar/alias/command execution systems
 882         Cmd_Init();
 883
 884         // parse commandline
 885         COM_InitArgv();
 886
 887         // initialize console window (only used by sys_win.c)
 888         Sys_InitConsole();
 889
 890         // detect gamemode from commandline options or executable name
 891         COM_InitGameType();
 892
 893         // construct a version string for the corner of the console
 894 #if defined(__linux__)
 895         os = "Linux";
 896 #elif defined(WIN32)
 897         os = "Windows";
 898 #elif defined(__FreeBSD__)
 899         os = "FreeBSD";
 900 #elif defined(__NetBSD__)
 901         os = "NetBSD";
 902 #elif defined(__OpenBSD__)
 903         os = "OpenBSD";
 904 #elif defined(MACOSX)
 905         os = "Mac OS X";
 906 #elif defined(__MORPHOS__)
 907         os = "MorphOS";
 908 #else
 909         os = "Unknown";
 910 #endif
 911         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
 912
 913 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
 914         if (COM_CheckParm("-nostdout"))
 915                 sys_nostdout = 1;
 916         else
 917                 Con_Printf("%s\n", engineversion);
 918
 919         // initialize filesystem (including fs_basedir, fs_gamedir, -path, -game, scr_screenshot_name)
 920         FS_Init();
 921
 922         // initialize various cvars that could not be initialized earlier
 923         Memory_Init_Commands();
 924         Con_Init_Commands();
 925         Cmd_Init_Commands();
 926         Sys_Init_Commands();
 927         COM_Init_Commands();
 928         FS_Init_Commands();
 929         COM_CheckRegistered();
 930
 931         // initialize ixtable
 932         Mathlib_Init();
 933
 934         NetConn_Init();
 935         //PR_Init();
 936         //PR_Cmd_Init();
 937         PRVM_Init();
 938         Mod_Init();
 939         SV_Init();
 940         Host_InitCommands();
 941         Host_InitLocal();
 942         Host_ServerOptions();
 943
 944         if (cls.state != ca_dedicated)
 945         {
 946                 Con_Printf("Initializing client\n");
 947
 948                 R_Modules_Init();
 949                 Palette_Init();
 950                 MR_Init_Commands();
 951                 VID_Shared_Init();
 952                 VID_Init();
 953                 Render_Init();
 954                 S_Init();
 955                 CDAudio_Init();
 956                 Key_Init();
 957                 V_Init();
 958                 CL_Init();
 959         }
 960
 961         // set up the default startmap_sp and startmap_dm aliases (mods can
 962         // override these) and then execute the quake.rc startup script
 963         if (gamemode == GAME_NEHAHRA)
 964                 Cbuf_AddText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec quake.rc\n");
 965         else if (gamemode == GAME_TRANSFUSION)
 966                 Cbuf_AddText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec quake.rc\n");
 967         else if (gamemode == GAME_TEU)
 968                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
 969         else
 970                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec quake.rc\n");
 971         Cbuf_Execute();
 972
 973         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
 974         if (!host_stuffcmdsrun)
 975         {
 976                 Cbuf_AddText("exec default.cfg\nexec config.cfg\nexec autoexec.cfg\nstuffcmds\n");
 977                 Cbuf_Execute();
 978         }
 979
 980         // put up the loading image so the user doesn't stare at a black screen...
 981         SCR_BeginLoadingPlaque();
 982
 983         // FIXME: put this into some neat design, but the menu should be allowed to crash
 984         // without crashing the whole game, so this should just be a short-time solution
 985
 986         // here comes the not so critical stuff
 987         if (setjmp(host_abortframe)) {
 988                 return;
 989         }
 990
 991         if (cls.state != ca_dedicated)
 992         {
 993                 MR_Init();
 994         }
 995
 996         // check for special benchmark mode
 997 // COMMANDLINEOPTION: Client: -benchmark <demoname> runs a timedemo and quits, results of any timedemo can be found in gamedir/benchmark.log (for example id1/benchmark.log)
 998         i = COM_CheckParm("-benchmark");
 999         if (i && i + 1 < com_argc)
1000         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1001         {
1002                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
1003                 Cbuf_Execute();
1004         }
1005
1006         // check for special demo mode
1007 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1008         i = COM_CheckParm("-demo");
1009         if (i && i + 1 < com_argc)
1010         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1011         {
1012                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1013                 Cbuf_Execute();
1014         }
1015
1016         // check for special demolooponly mode
1017 // COMMANDLINEOPTION: Client: -demolooponly <demoname> runs a playdemo and quits
1018         i = COM_CheckParm("-demolooponly");
1019         if (i && i + 1 < com_argc)
1020         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1021         {
1022                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1023                 Cbuf_Execute();
1024         }
1025
1026         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1027         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1028         {
1029                 Cbuf_AddText("startmap_dm\n");
1030                 Cbuf_Execute();
1031         }
1032
1033         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1034         {
1035                 if (gamemode == GAME_NEXUIZ)
1036                         Cbuf_AddText("togglemenu\nplayvideo logo\ncd loop 1\n");
1037                 else
1038                         Cbuf_AddText("togglemenu\n");
1039                 Cbuf_Execute();
1040         }
1041
1042         Con_DPrint("========Initialized=========\n");
1043
1044         //Host_StartVideo();
1045 }
1046
1047
1048 /*
1049 ===============
1050 Host_Shutdown
1051
1052 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1053 to run quit through here before the final handoff to the sys code.
1054 ===============
1055 */
1056 void Host_Shutdown(void)
1057 {
1058         static qboolean isdown = false;
1059
1060         if (isdown)
1061         {
1062                 Con_Print("recursive shutdown\n");
1063                 return;
1064         }
1065         isdown = true;
1066
1067         // be quiet while shutting down
1068         S_StopAllSounds();
1069
1070         // disconnect client from server if active
1071         CL_Disconnect();
1072
1073         // shut down local server if active
1074         Host_ShutdownServer ();
1075
1076         // Shutdown menu
1077         if(MR_Shutdown)
1078                 MR_Shutdown();
1079
1080         // AK shutdown PRVM
1081         // AK hmm, no PRVM_Shutdown(); yet
1082
1083         CL_Video_Shutdown();
1084
1085         Host_SaveConfig_f();
1086
1087         CDAudio_Shutdown ();
1088         S_Terminate ();
1089         NetConn_Shutdown ();
1090         //PR_Shutdown ();
1091
1092         if (cls.state != ca_dedicated)
1093         {
1094                 R_Modules_Shutdown();
1095                 VID_Shutdown();
1096         }
1097
1098         Cmd_Shutdown();
1099         CL_Shutdown();
1100         Sys_Shutdown();
1101         Log_Close();
1102         FS_Shutdown();
1103         Memory_Shutdown();
1104 }
1105