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 "libcurl.h"
  25 #include "cdaudio.h"
  26 #include "cl_video.h"
  27 #include "progsvm.h"
  28 #include "csprogs.h"
  29
  30 /*
  31
  32 A server can always be started, even if the system started out as a client
  33 to a remote system.
  34
  35 A client can NOT be started if the system started as a dedicated server.
  36
  37 Memory is cleared / released when a server or client begins, not when they end.
  38
  39 */
  40
  41 // how many frames have occurred
  42 // (checked by Host_Error and Host_SaveConfig_f)
  43 int host_framecount = 0;
  44 // LordHavoc: set when quit is executed
  45 qboolean host_shuttingdown = false;
  46
  47 // the real time since application started, without any slowmo or clamping
  48 double realtime;
  49
  50 // current client
  51 client_t *host_client;
  52
  53 jmp_buf host_abortframe;
  54
  55 // random seed
  56 cvar_t sv_random_seed = {0, "sv_random_seed", "", "random seed; when set, on every map start this random seed is used to initialize the random number generator. Don't touch it unless for benchmarking or debugging"};
  57
  58 // pretend frames take this amount of time (in seconds), 0 = realtime
  59 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"};
  60 // shows time used by certain subsystems
  61 cvar_t host_speeds = {0, "host_speeds","0", "reports how much time is used in server/graphics/sound"};
  62 // LordHavoc: framerate independent slowmo
  63 cvar_t slowmo = {0, "slowmo", "1.0", "controls game speed, 0.5 is half speed, 2 is double speed"};
  64 // LordHavoc: framerate upper cap
  65 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)"};
  66
  67 // print broadcast messages in dedicated mode
  68 cvar_t sv_echobprint = {CVAR_SAVE, "sv_echobprint", "1", "prints gamecode bprint() calls to server console"};
  69
  70 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)"};
  71 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)"};
  72
  73 cvar_t fraglimit = {CVAR_NOTIFY, "fraglimit","0", "ends level if this many frags is reached by any player"};
  74 cvar_t timelimit = {CVAR_NOTIFY, "timelimit","0", "ends level at this time (in minutes)"};
  75 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"};
  76
  77 cvar_t samelevel = {CVAR_NOTIFY, "samelevel","0", "repeats same level if level ends (due to timelimit or someone hitting an exit)"};
  78 cvar_t noexit = {CVAR_NOTIFY, "noexit","0", "kills anyone attempting to use an exit"};
  79
  80 cvar_t developer = {0, "developer","0", "prints additional debugging messages and information (recommended for modders and level designers)"};
  81 cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
  82
  83 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)"};
  84 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)"};
  85 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)"};
  86
  87 cvar_t pausable = {0, "pausable","1", "allow players to pause or not"};
  88
  89 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)"};
  90
  91 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
  92 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
  93
  94 /*
  95 ================
  96 Host_AbortCurrentFrame
  97
  98 aborts the current host frame and goes on with the next one
  99 ================
 100 */
 101 void Host_AbortCurrentFrame(void)
 102 {
 103         longjmp (host_abortframe, 1);
 104 }
 105
 106 /*
 107 ================
 108 Host_Error
 109
 110 This shuts down both the client and server
 111 ================
 112 */
 113 void Host_Error (const char *error, ...)
 114 {
 115         static char hosterrorstring1[MAX_INPUTLINE];
 116         static char hosterrorstring2[MAX_INPUTLINE];
 117         static qboolean hosterror = false;
 118         va_list argptr;
 119
 120         // turn off rcon redirect if it was active when the crash occurred
 121         rcon_redirect = false;
 122
 123         va_start (argptr,error);
 124         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
 125         va_end (argptr);
 126
 127         Con_Printf("Host_Error: %s\n", hosterrorstring1);
 128
 129         // LordHavoc: if crashing very early, or currently shutting down, do
 130         // Sys_Error instead
 131         if (host_framecount < 3 || host_shuttingdown)
 132                 Sys_Error ("Host_Error: %s", hosterrorstring1);
 133
 134         if (hosterror)
 135                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
 136         hosterror = true;
 137
 138         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
 139
 140         CL_Parse_DumpPacket();
 141
 142         CL_Parse_ErrorCleanUp();
 143
 144         //PR_Crash();
 145
 146         // print out where the crash happened, if it was caused by QC (and do a cleanup)
 147         PRVM_Crash();
 148
 149
 150         Host_ShutdownServer ();
 151
 152         if (cls.state == ca_dedicated)
 153                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
 154
 155         CL_Disconnect ();
 156         cls.demonum = -1;
 157
 158         hosterror = false;
 159
 160         Host_AbortCurrentFrame();
 161 }
 162
 163 void Host_ServerOptions (void)
 164 {
 165         int i;
 166
 167         // general default
 168         svs.maxclients = 8;
 169
 170 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
 171 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
 172         // if no client is in the executable or -dedicated is specified on
 173         // commandline, start a dedicated server
 174         i = COM_CheckParm ("-dedicated");
 175         if (i || !cl_available)
 176         {
 177                 cls.state = ca_dedicated;
 178                 // check for -dedicated specifying how many players
 179                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 180                         svs.maxclients = atoi (com_argv[i+1]);
 181                 if (COM_CheckParm ("-listen"))
 182                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
 183                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
 184                 Cvar_SetValue("sv_public", 1);
 185         }
 186         else if (cl_available)
 187         {
 188                 // client exists and not dedicated, check if -listen is specified
 189                 cls.state = ca_disconnected;
 190                 i = COM_CheckParm ("-listen");
 191                 if (i)
 192                 {
 193                         // default players unless specified
 194                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 195                                 svs.maxclients = atoi (com_argv[i+1]);
 196                 }
 197                 else
 198                 {
 199                         // default players in some games, singleplayer in most
 200                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_BATTLEMECH)
 201                                 svs.maxclients = 1;
 202                 }
 203         }
 204
 205         svs.maxclients = bound(1, svs.maxclients, MAX_SCOREBOARD);
 206
 207         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
 208
 209         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
 210                 Cvar_SetValueQuick(&deathmatch, 1);
 211 }
 212
 213 /*
 214 =======================
 215 Host_InitLocal
 216 ======================
 217 */
 218 void Host_SaveConfig_f(void);
 219 void Host_LoadConfig_f(void);
 220 static void Host_InitLocal (void)
 221 {
 222         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg immediately (also automatic when quitting)");
 223         Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
 224
 225         Cvar_RegisterVariable (&sv_random_seed);
 226         Cvar_RegisterVariable (&host_framerate);
 227         Cvar_RegisterVariable (&host_speeds);
 228         Cvar_RegisterVariable (&slowmo);
 229         Cvar_RegisterVariable (&cl_maxfps);
 230
 231         Cvar_RegisterVariable (&sv_echobprint);
 232
 233         Cvar_RegisterVariable (&sys_ticrate);
 234         Cvar_RegisterVariable (&sv_fixedframeratesingleplayer);
 235
 236         Cvar_RegisterVariable (&fraglimit);
 237         Cvar_RegisterVariable (&timelimit);
 238         Cvar_RegisterVariable (&teamplay);
 239         Cvar_RegisterVariable (&samelevel);
 240         Cvar_RegisterVariable (&noexit);
 241         Cvar_RegisterVariable (&skill);
 242         Cvar_RegisterVariable (&developer);
 243         Cvar_RegisterVariable (&developer_entityparsing);
 244         Cvar_RegisterVariable (&deathmatch);
 245         Cvar_RegisterVariable (&coop);
 246
 247         Cvar_RegisterVariable (&pausable);
 248
 249         Cvar_RegisterVariable (&temp1);
 250
 251         Cvar_RegisterVariable (&timestamps);
 252         Cvar_RegisterVariable (&timeformat);
 253 }
 254
 255
 256 /*
 257 ===============
 258 Host_SaveConfig_f
 259
 260 Writes key bindings and archived cvars to config.cfg
 261 ===============
 262 */
 263 void Host_SaveConfig_f(void)
 264 {
 265         qfile_t *f;
 266
 267 // dedicated servers initialize the host but don't parse and set the
 268 // config.cfg cvars
 269         // LordHavoc: don't save a config if it crashed in startup
 270         if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark"))
 271         {
 272                 f = FS_Open ("config.cfg", "wb", false, false);
 273                 if (!f)
 274                 {
 275                         Con_Print("Couldn't write config.cfg.\n");
 276                         return;
 277                 }
 278
 279                 Key_WriteBindings (f);
 280                 Cvar_WriteVariables (f);
 281
 282                 FS_Close (f);
 283         }
 284 }
 285
 286
 287 /*
 288 ===============
 289 Host_LoadConfig_f
 290
 291 Resets key bindings and cvars to defaults and then reloads scripts
 292 ===============
 293 */
 294 void Host_LoadConfig_f(void)
 295 {
 296         // unlock the cvar default strings so they can be updated by the new default.cfg
 297         Cvar_UnlockDefaults();
 298         // reset cvars to their defaults, and then exec startup scripts again
 299         Cbuf_InsertText("cvar_resettodefaults_all;exec quake.rc\n");
 300 }
 301
 302 /*
 303 =================
 304 SV_ClientPrint
 305
 306 Sends text across to be displayed
 307 FIXME: make this just a stuffed echo?
 308 =================
 309 */
 310 void SV_ClientPrint(const char *msg)
 311 {
 312         if (host_client->netconnection)
 313         {
 314                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
 315                 MSG_WriteString(&host_client->netconnection->message, msg);
 316         }
 317 }
 318
 319 /*
 320 =================
 321 SV_ClientPrintf
 322
 323 Sends text across to be displayed
 324 FIXME: make this just a stuffed echo?
 325 =================
 326 */
 327 void SV_ClientPrintf(const char *fmt, ...)
 328 {
 329         va_list argptr;
 330         char msg[MAX_INPUTLINE];
 331
 332         va_start(argptr,fmt);
 333         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 334         va_end(argptr);
 335
 336         SV_ClientPrint(msg);
 337 }
 338
 339 /*
 340 =================
 341 SV_BroadcastPrint
 342
 343 Sends text to all active clients
 344 =================
 345 */
 346 void SV_BroadcastPrint(const char *msg)
 347 {
 348         int i;
 349         client_t *client;
 350
 351         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
 352         {
 353                 if (client->active && client->netconnection)
 354                 {
 355                         MSG_WriteByte(&client->netconnection->message, svc_print);
 356                         MSG_WriteString(&client->netconnection->message, msg);
 357                 }
 358         }
 359
 360         if (sv_echobprint.integer && cls.state == ca_dedicated)
 361                 Con_Print(msg);
 362 }
 363
 364 /*
 365 =================
 366 SV_BroadcastPrintf
 367
 368 Sends text to all active clients
 369 =================
 370 */
 371 void SV_BroadcastPrintf(const char *fmt, ...)
 372 {
 373         va_list argptr;
 374         char msg[MAX_INPUTLINE];
 375
 376         va_start(argptr,fmt);
 377         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 378         va_end(argptr);
 379
 380         SV_BroadcastPrint(msg);
 381 }
 382
 383 /*
 384 =================
 385 Host_ClientCommands
 386
 387 Send text over to the client to be executed
 388 =================
 389 */
 390 void Host_ClientCommands(const char *fmt, ...)
 391 {
 392         va_list argptr;
 393         char string[MAX_INPUTLINE];
 394
 395         if (!host_client->netconnection)
 396                 return;
 397
 398         va_start(argptr,fmt);
 399         dpvsnprintf(string, sizeof(string), fmt, argptr);
 400         va_end(argptr);
 401
 402         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
 403         MSG_WriteString(&host_client->netconnection->message, string);
 404 }
 405
 406 /*
 407 =====================
 408 SV_DropClient
 409
 410 Called when the player is getting totally kicked off the host
 411 if (crash = true), don't bother sending signofs
 412 =====================
 413 */
 414 void SV_DropClient(qboolean crash)
 415 {
 416         int i;
 417         Con_Printf("Client \"%s\" dropped\n", host_client->name);
 418
 419         // make sure edict is not corrupt (from a level change for example)
 420         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
 421
 422         if (host_client->netconnection)
 423         {
 424                 // free the client (the body stays around)
 425                 if (!crash)
 426                 {
 427                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
 428                         unsigned char bufdata[8];
 429                         sizebuf_t buf;
 430                         memset(&buf, 0, sizeof(buf));
 431                         buf.data = bufdata;
 432                         buf.maxsize = sizeof(bufdata);
 433                         MSG_WriteByte(&buf, svc_disconnect);
 434                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol);
 435                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol);
 436                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol);
 437                 }
 438                 // break the net connection
 439                 NetConn_Close(host_client->netconnection);
 440                 host_client->netconnection = NULL;
 441         }
 442
 443         // call qc ClientDisconnect function
 444         // LordHavoc: don't call QC if server is dead (avoids recursive
 445         // Host_Error in some mods when they run out of edicts)
 446         if (host_client->clientconnectcalled && sv.active && host_client->edict)
 447         {
 448                 // call the prog function for removing a client
 449                 // this will set the body to a dead frame, among other things
 450                 int saveSelf = prog->globals.server->self;
 451                 host_client->clientconnectcalled = false;
 452                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
 453                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
 454                 prog->globals.server->self = saveSelf;
 455         }
 456
 457         // if a download is active, close it
 458         if (host_client->download_file)
 459         {
 460                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
 461                 FS_Close(host_client->download_file);
 462                 host_client->download_file = NULL;
 463                 host_client->download_name[0] = 0;
 464                 host_client->download_expectedposition = 0;
 465                 host_client->download_started = false;
 466         }
 467
 468         // remove leaving player from scoreboard
 469         host_client->name[0] = 0;
 470         host_client->colors = 0;
 471         host_client->frags = 0;
 472         // send notification to all clients
 473         // get number of client manually just to make sure we get it right...
 474         i = host_client - svs.clients;
 475         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
 476         MSG_WriteByte (&sv.reliable_datagram, i);
 477         MSG_WriteString (&sv.reliable_datagram, host_client->name);
 478         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
 479         MSG_WriteByte (&sv.reliable_datagram, i);
 480         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
 481         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
 482         MSG_WriteByte (&sv.reliable_datagram, i);
 483         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
 484
 485         // free the client now
 486         if (host_client->entitydatabase)
 487                 EntityFrame_FreeDatabase(host_client->entitydatabase);
 488         if (host_client->entitydatabase4)
 489                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
 490         if (host_client->entitydatabase5)
 491                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
 492
 493         if (sv.active)
 494         {
 495                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
 496                 PRVM_ED_ClearEdict(host_client->edict);
 497         }
 498
 499         // clear the client struct (this sets active to false)
 500         memset(host_client, 0, sizeof(*host_client));
 501
 502         // update server listing on the master because player count changed
 503         // (which the master uses for filtering empty/full servers)
 504         NetConn_Heartbeat(1);
 505 }
 506
 507 /*
 508 ==================
 509 Host_ShutdownServer
 510
 511 This only happens at the end of a game, not between levels
 512 ==================
 513 */
 514 void Host_ShutdownServer(void)
 515 {
 516         int i;
 517
 518         Con_DPrintf("Host_ShutdownServer\n");
 519
 520         if (!sv.active)
 521                 return;
 522
 523         NetConn_Heartbeat(2);
 524         NetConn_Heartbeat(2);
 525
 526 // make sure all the clients know we're disconnecting
 527         SV_VM_Begin();
 528         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 529                 if (host_client->active)
 530                         SV_DropClient(false); // server shutdown
 531         SV_VM_End();
 532
 533         NetConn_CloseServerPorts();
 534
 535         sv.active = false;
 536 //
 537 // clear structures
 538 //
 539         memset(&sv, 0, sizeof(sv));
 540         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
 541 }
 542
 543
 544 //============================================================================
 545
 546 /*
 547 ===================
 548 Host_GetConsoleCommands
 549
 550 Add them exactly as if they had been typed at the console
 551 ===================
 552 */
 553 void Host_GetConsoleCommands (void)
 554 {
 555         char *cmd;
 556
 557         while (1)
 558         {
 559                 cmd = Sys_ConsoleInput ();
 560                 if (!cmd)
 561                         break;
 562                 Cbuf_AddText (cmd);
 563         }
 564 }
 565
 566 /*
 567 ==================
 568 Host_Frame
 569
 570 Runs all active servers
 571 ==================
 572 */
 573 static void Host_Init(void);
 574 void Host_Main(void)
 575 {
 576         static double time1 = 0;
 577         static double time2 = 0;
 578         static double time3 = 0;
 579         // these are static because of setjmp/longjmp warnings in mingw32 gcc 2.95.3
 580         static double frameoldtime, framenewtime, frametime, cl_timer, sv_timer;
 581
 582         Host_Init();
 583
 584         cl_timer = 0;
 585         sv_timer = 0;
 586
 587         framenewtime = Sys_DoubleTime();
 588         for (;;)
 589         {
 590                 if (setjmp(host_abortframe))
 591                         continue;                       // something bad happened, or the server disconnected
 592
 593                 frameoldtime = framenewtime;
 594                 framenewtime = Sys_DoubleTime();
 595                 frametime = framenewtime - frameoldtime;
 596                 realtime += frametime;
 597
 598                 // if there is some time remaining from last frame, rest the timers
 599                 if (cl_timer >= 0)
 600                         cl_timer = 0;
 601                 if (sv_timer >= 0)
 602                         sv_timer = 0;
 603
 604                 // accumulate the new frametime into the timers
 605                 cl_timer += frametime;
 606                 sv_timer += frametime;
 607
 608                 if (slowmo.value < 0)
 609                         Cvar_SetValue("slowmo", 0);
 610                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
 611                         Cvar_SetValue("host_framerate", 0);
 612                 if (cl_maxfps.value < 1)
 613                         Cvar_SetValue("cl_maxfps", 1);
 614
 615                 // if the accumulators haven't become positive yet, keep waiting
 616                 if (!cls.timedemo && cl_timer <= 0 && sv_timer <= 0)
 617                 {
 618                         double wait;
 619                         int msleft;
 620                         if (cls.state == ca_dedicated)
 621                                 wait = sv_timer;
 622                         else if (!sv.active)
 623                                 wait = cl_timer;
 624                         else
 625                                 wait = max(cl_timer, sv_timer);
 626                         msleft = (int)floor(wait * -1000.0);
 627                         if (msleft >= 1)
 628                                 Sys_Sleep(msleft);
 629                         continue;
 630                 }
 631
 632                 // keep the random time dependent
 633                 if(!*sv_random_seed.string)
 634                         rand();
 635
 636                 cl.islocalgame = NetConn_IsLocalGame();
 637
 638                 // get new key events
 639                 Sys_SendKeyEvents();
 640
 641                 // when a server is running we only execute console commands on server frames
 642                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
 643                 // otherwise we execute them on all frames
 644                 if (sv_timer > 0 || !sv.active)
 645                 {
 646                         // process console commands
 647                         Cbuf_Execute();
 648                 }
 649
 650                 NetConn_UpdateSockets();
 651
 652                 Curl_Run();
 653
 654         //-------------------
 655         //
 656         // server operations
 657         //
 658         //-------------------
 659
 660                 // check for commands typed to the host
 661                 Host_GetConsoleCommands();
 662
 663                 if (sv_timer > 0)
 664                 {
 665                         if (!sv.active)
 666                         {
 667                                 // if there is no server, run server timing at 10fps
 668                                 sv_timer -= 0.1;
 669                         }
 670                         else
 671                         {
 672                                 // execute one or more server frames, with an upper limit on how much
 673                                 // execution time to spend on server frames to avoid freezing the game if
 674                                 // the server is overloaded, this execution time limit means the game will
 675                                 // slow down if the server is taking too long.
 676                                 int framecount, framelimit = 1;
 677                                 double advancetime, aborttime = 0;
 678
 679                                 // receive server packets now, which might contain rcon commands, which
 680                                 // may change level or other such things we don't want to have happen in
 681                                 // the middle of Host_Frame
 682                                 NetConn_ServerFrame();
 683
 684                                 // run the world state
 685                                 // don't allow simulation to run too fast or too slow or logic glitches can occur
 686
 687                                 // stop running server frames if the wall time reaches this value
 688                                 if (sys_ticrate.value <= 0)
 689                                         advancetime = sv_timer;
 690                                 else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
 691                                 {
 692                                         // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
 693                                         advancetime = bound(0.01, cl_timer, sys_ticrate.value);
 694                                         framelimit = 10;
 695                                         aborttime = Sys_DoubleTime() + 0.1;
 696                                 }
 697                                 else
 698                                 {
 699                                         advancetime = sys_ticrate.value;
 700                                         // listen servers can run multiple server frames per client frame
 701                                         if (cls.state == ca_connected)
 702                                         {
 703                                                 framelimit = 10;
 704                                                 aborttime = Sys_DoubleTime() + 0.1;
 705                                         }
 706                                 }
 707                                 advancetime = min(advancetime, 0.1);
 708
 709                                 // only advance time if not paused
 710                                 // the game also pauses in singleplayer when menu or console is used
 711                                 sv.frametime = advancetime * slowmo.value;
 712                                 if (host_framerate.value)
 713                                         sv.frametime = host_framerate.value;
 714                                 if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
 715                                         sv.frametime = 0;
 716
 717                                 // setup the VM frame
 718                                 SV_VM_Begin();
 719
 720                                 for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
 721                                 {
 722                                         sv_timer -= advancetime;
 723
 724                                         // move things around and think unless paused
 725                                         if (sv.frametime)
 726                                                 SV_Physics();
 727
 728                                         // send all messages to the clients
 729                                         SV_SendClientMessages();
 730
 731                                         // clear the general datagram
 732                                         SV_ClearDatagram();
 733
 734                                         // if this server frame took too long, break out of the loop
 735                                         if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
 736                                                 break;
 737                                 }
 738
 739                                 // end the server VM frame
 740                                 SV_VM_End();
 741
 742                                 // send an heartbeat if enough time has passed since the last one
 743                                 NetConn_Heartbeat(0);
 744                         }
 745                 }
 746
 747         //-------------------
 748         //
 749         // client operations
 750         //
 751         //-------------------
 752
 753                 if (cl_timer > 0 || cls.timedemo)
 754                 {
 755                         if (cls.state == ca_dedicated)
 756                         {
 757                                 // if there is no client, run client timing at 10fps
 758                                 cl_timer -= 0.1;
 759                                 if (host_speeds.integer)
 760                                         time1 = time2 = Sys_DoubleTime();
 761                         }
 762                         else
 763                         {
 764                                 double frametime;
 765                                 frametime = cl.realframetime = min(cl_timer, 1);
 766
 767                                 // decide the simulation time
 768                                 if (!cls.timedemo)
 769                                 {
 770                                         if (cls.capturevideo.active)
 771                                         {
 772                                                 if (cls.capturevideo.realtime)
 773                                                         frametime = cl.realframetime = max(cl.realframetime, 1.0 / cls.capturevideo.framerate);
 774                                                 else
 775                                                 {
 776                                                         frametime = 1.0 / cls.capturevideo.framerate;
 777                                                         cl.realframetime = max(cl.realframetime, frametime);
 778                                                 }
 779                                         }
 780                                         else if (vid_activewindow)
 781                                                 frametime = cl.realframetime = max(cl.realframetime, 1.0 / cl_maxfps.value);
 782                                         else
 783                                                 frametime = cl.realframetime = 0.1;
 784
 785                                         // deduct the frame time from the accumulator
 786                                         cl_timer -= cl.realframetime;
 787
 788                                         // apply slowmo scaling
 789                                         frametime *= slowmo.value;
 790
 791                                         // host_framerate overrides all else
 792                                         if (host_framerate.value)
 793                                                 frametime = host_framerate.value;
 794                                 }
 795
 796                                 cl.oldtime = cl.time;
 797                                 cl.time += frametime;
 798
 799                                 // Collect input into cmd
 800                                 CL_Move();
 801
 802                                 NetConn_ClientFrame();
 803
 804                                 if (cls.state == ca_connected)
 805                                 {
 806                                         CL_ReadFromServer();
 807                                         // if running the server remotely, send intentions now after
 808                                         // the incoming messages have been read
 809                                         //if (!cl.islocalgame)
 810                                         //      CL_SendCmd();
 811                                 }
 812
 813                                 // update video
 814                                 if (host_speeds.integer)
 815                                         time1 = Sys_DoubleTime();
 816
 817                                 //ui_update();
 818
 819                                 CL_VideoFrame();
 820
 821                                 CL_UpdateScreen();
 822
 823                                 if (host_speeds.integer)
 824                                         time2 = Sys_DoubleTime();
 825
 826                                 // update audio
 827                                 if(csqc_usecsqclistener)
 828                                 {
 829                                         S_Update(&csqc_listenermatrix);
 830                                         csqc_usecsqclistener = false;
 831                                 }
 832                                 else
 833                                         S_Update(&r_view.matrix);
 834
 835                                 CDAudio_Update();
 836                         }
 837
 838                         if (host_speeds.integer)
 839                         {
 840                                 int pass1, pass2, pass3;
 841                                 pass1 = (int)((time1 - time3)*1000000);
 842                                 time3 = Sys_DoubleTime();
 843                                 pass2 = (int)((time2 - time1)*1000000);
 844                                 pass3 = (int)((time3 - time2)*1000000);
 845                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
 846                                                         pass1+pass2+pass3, pass1, pass2, pass3);
 847                         }
 848                 }
 849
 850                 host_framecount++;
 851         }
 852 }
 853
 854 //============================================================================
 855
 856 qboolean vid_opened = false;
 857 void Host_StartVideo(void)
 858 {
 859         if (!vid_opened && cls.state != ca_dedicated)
 860         {
 861                 vid_opened = true;
 862                 VID_Start();
 863                 CDAudio_Startup();
 864         }
 865 }
 866
 867 char engineversion[128];
 868
 869 qboolean sys_nostdout = false;
 870
 871 extern void Render_Init(void);
 872 extern void Mathlib_Init(void);
 873 extern void FS_Init(void);
 874 extern void FS_Shutdown(void);
 875 extern void PR_Cmd_Init(void);
 876 extern void COM_Init_Commands(void);
 877 extern void FS_Init_Commands(void);
 878 extern qboolean host_stuffcmdsrun;
 879
 880 /*
 881 ====================
 882 Host_Init
 883 ====================
 884 */
 885 static void Host_Init (void)
 886 {
 887         int i;
 888         const char* os;
 889
 890         // LordHavoc: quake never seeded the random number generator before... heh
 891         srand(time(NULL));
 892
 893         // FIXME: this is evil, but possibly temporary
 894 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
 895         if (COM_CheckParm("-developer"))
 896         {
 897                 developer.value = developer.integer = 100;
 898                 developer.string = "100";
 899         }
 900
 901         if (COM_CheckParm("-developer2"))
 902         {
 903                 developer.value = developer.integer = 100;
 904                 developer.string = "100";
 905                 developer_memory.value = developer_memory.integer = 100;
 906                 developer.string = "100";
 907                 developer_memorydebug.value = developer_memorydebug.integer = 100;
 908                 developer_memorydebug.string = "100";
 909         }
 910
 911 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
 912         if (COM_CheckParm("-nostdout"))
 913                 sys_nostdout = 1;
 914
 915         // used by everything
 916         Memory_Init();
 917
 918         // initialize console command/cvar/alias/command execution systems
 919         Cmd_Init();
 920
 921         // initialize memory subsystem cvars/commands
 922         Memory_Init_Commands();
 923
 924         // initialize console and logging and its cvars/commands
 925         Con_Init();
 926
 927         // initialize various cvars that could not be initialized earlier
 928         Curl_Init_Commands();
 929         Cmd_Init_Commands();
 930         Sys_Init_Commands();
 931         COM_Init_Commands();
 932         FS_Init_Commands();
 933
 934         // initialize console window (only used by sys_win.c)
 935         Sys_InitConsole();
 936
 937         // detect gamemode from commandline options or executable name
 938         COM_InitGameType();
 939
 940         // construct a version string for the corner of the console
 941 #if defined(__linux__)
 942         os = "Linux";
 943 #elif defined(WIN32)
 944         os = "Windows";
 945 #elif defined(__FreeBSD__)
 946         os = "FreeBSD";
 947 #elif defined(__NetBSD__)
 948         os = "NetBSD";
 949 #elif defined(__OpenBSD__)
 950         os = "OpenBSD";
 951 #elif defined(MACOSX)
 952         os = "Mac OS X";
 953 #elif defined(__MORPHOS__)
 954         os = "MorphOS";
 955 #else
 956         os = "Unknown";
 957 #endif
 958         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
 959         Con_Printf("%s\n", engineversion);
 960
 961         // initialize ixtable
 962         Mathlib_Init();
 963
 964         // initialize filesystem (including fs_basedir, fs_gamedir, -path, -game, scr_screenshot_name)
 965         FS_Init();
 966
 967         NetConn_Init();
 968         Curl_Init();
 969         //PR_Init();
 970         //PR_Cmd_Init();
 971         PRVM_Init();
 972         Mod_Init();
 973         World_Init();
 974         SV_Init();
 975         Host_InitCommands();
 976         Host_InitLocal();
 977         Host_ServerOptions();
 978
 979         if (cls.state != ca_dedicated)
 980         {
 981                 Con_Printf("Initializing client\n");
 982
 983                 R_Modules_Init();
 984                 Palette_Init();
 985                 MR_Init_Commands();
 986                 VID_Shared_Init();
 987                 VID_Init();
 988                 Render_Init();
 989                 S_Init();
 990                 CDAudio_Init();
 991                 Key_Init();
 992                 V_Init();
 993                 CL_Init();
 994         }
 995
 996         // set up the default startmap_sp and startmap_dm aliases (mods can
 997         // override these) and then execute the quake.rc startup script
 998         if (gamemode == GAME_NEHAHRA)
 999                 Cbuf_AddText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec quake.rc\n");
1000         else if (gamemode == GAME_TRANSFUSION)
1001                 Cbuf_AddText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec quake.rc\n");
1002         else if (gamemode == GAME_TEU)
1003                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
1004         else
1005                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec quake.rc\n");
1006         Cbuf_Execute();
1007
1008         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
1009         if (!host_stuffcmdsrun)
1010         {
1011                 Cbuf_AddText("exec default.cfg\nexec config.cfg\nexec autoexec.cfg\nstuffcmds\n");
1012                 Cbuf_Execute();
1013         }
1014
1015         // put up the loading image so the user doesn't stare at a black screen...
1016         SCR_BeginLoadingPlaque();
1017
1018         // FIXME: put this into some neat design, but the menu should be allowed to crash
1019         // without crashing the whole game, so this should just be a short-time solution
1020
1021         // here comes the not so critical stuff
1022         if (setjmp(host_abortframe)) {
1023                 return;
1024         }
1025
1026         if (cls.state != ca_dedicated)
1027         {
1028                 MR_Init();
1029         }
1030
1031         // check for special benchmark mode
1032 // 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)
1033         i = COM_CheckParm("-benchmark");
1034         if (i && i + 1 < com_argc)
1035         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1036         {
1037                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
1038                 Cbuf_Execute();
1039         }
1040
1041         // check for special demo mode
1042 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1043         i = COM_CheckParm("-demo");
1044         if (i && i + 1 < com_argc)
1045         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1046         {
1047                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1048                 Cbuf_Execute();
1049         }
1050
1051         // check for special demolooponly mode
1052 // COMMANDLINEOPTION: Client: -demolooponly <demoname> runs a playdemo and quits
1053         i = COM_CheckParm("-demolooponly");
1054         if (i && i + 1 < com_argc)
1055         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1056         {
1057                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1058                 Cbuf_Execute();
1059         }
1060
1061         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1062         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1063         {
1064                 Cbuf_AddText("startmap_dm\n");
1065                 Cbuf_Execute();
1066         }
1067
1068         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1069         {
1070                 if (gamemode == GAME_NEXUIZ)
1071                         Cbuf_AddText("togglemenu\nplayvideo logo\ncd loop 1\n");
1072                 else
1073                         Cbuf_AddText("togglemenu\n");
1074                 Cbuf_Execute();
1075         }
1076
1077         Con_DPrint("========Initialized=========\n");
1078
1079         //Host_StartVideo();
1080 }
1081
1082
1083 /*
1084 ===============
1085 Host_Shutdown
1086
1087 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1088 to run quit through here before the final handoff to the sys code.
1089 ===============
1090 */
1091 void Host_Shutdown(void)
1092 {
1093         static qboolean isdown = false;
1094
1095         if (isdown)
1096         {
1097                 Con_Print("recursive shutdown\n");
1098                 return;
1099         }
1100         isdown = true;
1101
1102         // be quiet while shutting down
1103         S_StopAllSounds();
1104
1105         // disconnect client from server if active
1106         CL_Disconnect();
1107
1108         // shut down local server if active
1109         Host_ShutdownServer ();
1110
1111         // Shutdown menu
1112         if(MR_Shutdown)
1113                 MR_Shutdown();
1114
1115         // AK shutdown PRVM
1116         // AK hmm, no PRVM_Shutdown(); yet
1117
1118         CL_Video_Shutdown();
1119
1120         Host_SaveConfig_f();
1121
1122         CDAudio_Shutdown ();
1123         S_Terminate ();
1124         Curl_Shutdown ();
1125         NetConn_Shutdown ();
1126         //PR_Shutdown ();
1127
1128         if (cls.state != ca_dedicated)
1129         {
1130                 R_Modules_Shutdown();
1131                 VID_Shutdown();
1132         }
1133
1134         Cmd_Shutdown();
1135         CL_Shutdown();
1136         Sys_Shutdown();
1137         Log_Close();
1138         FS_Shutdown();
1139         Memory_Shutdown();
1140 }
1141