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