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 cl_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 upper cap
  60 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)"};
  61
  62 cvar_t developer = {0, "developer","0", "prints additional debugging messages and information (recommended for modders and level designers)"};
  63 cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
  64
  65 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
  66 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
  67
  68 /*
  69 ================
  70 Host_AbortCurrentFrame
  71
  72 aborts the current host frame and goes on with the next one
  73 ================
  74 */
  75 void Host_AbortCurrentFrame(void)
  76 {
  77         longjmp (host_abortframe, 1);
  78 }
  79
  80 /*
  81 ================
  82 Host_Error
  83
  84 This shuts down both the client and server
  85 ================
  86 */
  87 void Host_Error (const char *error, ...)
  88 {
  89         static char hosterrorstring1[MAX_INPUTLINE];
  90         static char hosterrorstring2[MAX_INPUTLINE];
  91         static qboolean hosterror = false;
  92         va_list argptr;
  93
  94         // turn off rcon redirect if it was active when the crash occurred
  95         rcon_redirect = false;
  96
  97         va_start (argptr,error);
  98         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
  99         va_end (argptr);
 100
 101         Con_Printf("Host_Error: %s\n", hosterrorstring1);
 102
 103         // LordHavoc: if crashing very early, or currently shutting down, do
 104         // Sys_Error instead
 105         if (host_framecount < 3 || host_shuttingdown)
 106                 Sys_Error ("Host_Error: %s", hosterrorstring1);
 107
 108         if (hosterror)
 109                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
 110         hosterror = true;
 111
 112         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
 113
 114         CL_Parse_DumpPacket();
 115
 116         CL_Parse_ErrorCleanUp();
 117
 118         //PR_Crash();
 119
 120         // print out where the crash happened, if it was caused by QC (and do a cleanup)
 121         PRVM_Crash();
 122
 123
 124         Host_ShutdownServer ();
 125
 126         if (cls.state == ca_dedicated)
 127                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
 128
 129         CL_Disconnect ();
 130         cls.demonum = -1;
 131
 132         hosterror = false;
 133
 134         Host_AbortCurrentFrame();
 135 }
 136
 137 void Host_ServerOptions (void)
 138 {
 139         int i;
 140
 141         // general default
 142         svs.maxclients = 8;
 143
 144 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
 145 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
 146         // if no client is in the executable or -dedicated is specified on
 147         // commandline, start a dedicated server
 148         i = COM_CheckParm ("-dedicated");
 149         if (i || !cl_available)
 150         {
 151                 cls.state = ca_dedicated;
 152                 // check for -dedicated specifying how many players
 153                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 154                         svs.maxclients = atoi (com_argv[i+1]);
 155                 if (COM_CheckParm ("-listen"))
 156                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
 157                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
 158                 Cvar_SetValue("sv_public", 1);
 159         }
 160         else if (cl_available)
 161         {
 162                 // client exists and not dedicated, check if -listen is specified
 163                 cls.state = ca_disconnected;
 164                 i = COM_CheckParm ("-listen");
 165                 if (i)
 166                 {
 167                         // default players unless specified
 168                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 169                                 svs.maxclients = atoi (com_argv[i+1]);
 170                 }
 171                 else
 172                 {
 173                         // default players in some games, singleplayer in most
 174                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_BATTLEMECH)
 175                                 svs.maxclients = 1;
 176                 }
 177         }
 178
 179         svs.maxclients = bound(1, svs.maxclients, MAX_SCOREBOARD);
 180
 181         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
 182
 183         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
 184                 Cvar_SetValueQuick(&deathmatch, 1);
 185 }
 186
 187 /*
 188 =======================
 189 Host_InitLocal
 190 ======================
 191 */
 192 void Host_SaveConfig_f(void);
 193 void Host_LoadConfig_f(void);
 194 static void Host_InitLocal (void)
 195 {
 196         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg immediately (also automatic when quitting)");
 197         Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
 198
 199         Cvar_RegisterVariable (&host_framerate);
 200         Cvar_RegisterVariable (&host_speeds);
 201         Cvar_RegisterVariable (&cl_maxfps);
 202
 203         Cvar_RegisterVariable (&developer);
 204         Cvar_RegisterVariable (&developer_entityparsing);
 205
 206         Cvar_RegisterVariable (&timestamps);
 207         Cvar_RegisterVariable (&timeformat);
 208 }
 209
 210
 211 /*
 212 ===============
 213 Host_SaveConfig_f
 214
 215 Writes key bindings and archived cvars to config.cfg
 216 ===============
 217 */
 218 void Host_SaveConfig_f(void)
 219 {
 220         qfile_t *f;
 221
 222 // dedicated servers initialize the host but don't parse and set the
 223 // config.cfg cvars
 224         // LordHavoc: don't save a config if it crashed in startup
 225         if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark"))
 226         {
 227                 f = FS_Open ("config.cfg", "wb", false, false);
 228                 if (!f)
 229                 {
 230                         Con_Print("Couldn't write config.cfg.\n");
 231                         return;
 232                 }
 233
 234                 Key_WriteBindings (f);
 235                 Cvar_WriteVariables (f);
 236
 237                 FS_Close (f);
 238         }
 239 }
 240
 241
 242 /*
 243 ===============
 244 Host_LoadConfig_f
 245
 246 Resets key bindings and cvars to defaults and then reloads scripts
 247 ===============
 248 */
 249 void Host_LoadConfig_f(void)
 250 {
 251         // unlock the cvar default strings so they can be updated by the new default.cfg
 252         Cvar_UnlockDefaults();
 253         // reset cvars to their defaults, and then exec startup scripts again
 254         Cbuf_InsertText("cvar_resettodefaults_all;exec quake.rc\n");
 255 }
 256
 257 /*
 258 =================
 259 SV_ClientPrint
 260
 261 Sends text across to be displayed
 262 FIXME: make this just a stuffed echo?
 263 =================
 264 */
 265 void SV_ClientPrint(const char *msg)
 266 {
 267         if (host_client->netconnection)
 268         {
 269                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
 270                 MSG_WriteString(&host_client->netconnection->message, msg);
 271         }
 272 }
 273
 274 /*
 275 =================
 276 SV_ClientPrintf
 277
 278 Sends text across to be displayed
 279 FIXME: make this just a stuffed echo?
 280 =================
 281 */
 282 void SV_ClientPrintf(const char *fmt, ...)
 283 {
 284         va_list argptr;
 285         char msg[MAX_INPUTLINE];
 286
 287         va_start(argptr,fmt);
 288         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 289         va_end(argptr);
 290
 291         SV_ClientPrint(msg);
 292 }
 293
 294 /*
 295 =================
 296 SV_BroadcastPrint
 297
 298 Sends text to all active clients
 299 =================
 300 */
 301 void SV_BroadcastPrint(const char *msg)
 302 {
 303         int i;
 304         client_t *client;
 305
 306         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
 307         {
 308                 if (client->active && client->netconnection)
 309                 {
 310                         MSG_WriteByte(&client->netconnection->message, svc_print);
 311                         MSG_WriteString(&client->netconnection->message, msg);
 312                 }
 313         }
 314
 315         if (sv_echobprint.integer && cls.state == ca_dedicated)
 316                 Con_Print(msg);
 317 }
 318
 319 /*
 320 =================
 321 SV_BroadcastPrintf
 322
 323 Sends text to all active clients
 324 =================
 325 */
 326 void SV_BroadcastPrintf(const char *fmt, ...)
 327 {
 328         va_list argptr;
 329         char msg[MAX_INPUTLINE];
 330
 331         va_start(argptr,fmt);
 332         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 333         va_end(argptr);
 334
 335         SV_BroadcastPrint(msg);
 336 }
 337
 338 /*
 339 =================
 340 Host_ClientCommands
 341
 342 Send text over to the client to be executed
 343 =================
 344 */
 345 void Host_ClientCommands(const char *fmt, ...)
 346 {
 347         va_list argptr;
 348         char string[MAX_INPUTLINE];
 349
 350         if (!host_client->netconnection)
 351                 return;
 352
 353         va_start(argptr,fmt);
 354         dpvsnprintf(string, sizeof(string), fmt, argptr);
 355         va_end(argptr);
 356
 357         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
 358         MSG_WriteString(&host_client->netconnection->message, string);
 359 }
 360
 361 /*
 362 =====================
 363 SV_DropClient
 364
 365 Called when the player is getting totally kicked off the host
 366 if (crash = true), don't bother sending signofs
 367 =====================
 368 */
 369 void SV_DropClient(qboolean crash)
 370 {
 371         int i;
 372         Con_Printf("Client \"%s^%i\" dropped\n", host_client->name, STRING_COLOR_DEFAULT);
 373
 374         // make sure edict is not corrupt (from a level change for example)
 375         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
 376
 377         if (host_client->netconnection)
 378         {
 379                 // free the client (the body stays around)
 380                 if (!crash)
 381                 {
 382                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
 383                         unsigned char bufdata[8];
 384                         sizebuf_t buf;
 385                         memset(&buf, 0, sizeof(buf));
 386                         buf.data = bufdata;
 387                         buf.maxsize = sizeof(bufdata);
 388                         MSG_WriteByte(&buf, svc_disconnect);
 389                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000);
 390                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000);
 391                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000);
 392                 }
 393                 // break the net connection
 394                 NetConn_Close(host_client->netconnection);
 395                 host_client->netconnection = NULL;
 396         }
 397
 398         // call qc ClientDisconnect function
 399         // LordHavoc: don't call QC if server is dead (avoids recursive
 400         // Host_Error in some mods when they run out of edicts)
 401         if (host_client->clientconnectcalled && sv.active && host_client->edict)
 402         {
 403                 // call the prog function for removing a client
 404                 // this will set the body to a dead frame, among other things
 405                 int saveSelf = prog->globals.server->self;
 406                 host_client->clientconnectcalled = false;
 407                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
 408                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
 409                 prog->globals.server->self = saveSelf;
 410         }
 411
 412         // if a download is active, close it
 413         if (host_client->download_file)
 414         {
 415                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
 416                 FS_Close(host_client->download_file);
 417                 host_client->download_file = NULL;
 418                 host_client->download_name[0] = 0;
 419                 host_client->download_expectedposition = 0;
 420                 host_client->download_started = false;
 421         }
 422
 423         // remove leaving player from scoreboard
 424         host_client->name[0] = 0;
 425         host_client->colors = 0;
 426         host_client->frags = 0;
 427         // send notification to all clients
 428         // get number of client manually just to make sure we get it right...
 429         i = host_client - svs.clients;
 430         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
 431         MSG_WriteByte (&sv.reliable_datagram, i);
 432         MSG_WriteString (&sv.reliable_datagram, host_client->name);
 433         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
 434         MSG_WriteByte (&sv.reliable_datagram, i);
 435         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
 436         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
 437         MSG_WriteByte (&sv.reliable_datagram, i);
 438         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
 439
 440         // free the client now
 441         if (host_client->entitydatabase)
 442                 EntityFrame_FreeDatabase(host_client->entitydatabase);
 443         if (host_client->entitydatabase4)
 444                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
 445         if (host_client->entitydatabase5)
 446                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
 447
 448         if (sv.active)
 449         {
 450                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
 451                 PRVM_ED_ClearEdict(host_client->edict);
 452         }
 453
 454         // clear the client struct (this sets active to false)
 455         memset(host_client, 0, sizeof(*host_client));
 456
 457         // update server listing on the master because player count changed
 458         // (which the master uses for filtering empty/full servers)
 459         NetConn_Heartbeat(1);
 460 }
 461
 462 /*
 463 ==================
 464 Host_ShutdownServer
 465
 466 This only happens at the end of a game, not between levels
 467 ==================
 468 */
 469 void Host_ShutdownServer(void)
 470 {
 471         int i;
 472
 473         Con_DPrintf("Host_ShutdownServer\n");
 474
 475         if (!sv.active)
 476                 return;
 477
 478         NetConn_Heartbeat(2);
 479         NetConn_Heartbeat(2);
 480
 481 // make sure all the clients know we're disconnecting
 482         SV_VM_Begin();
 483         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 484                 if (host_client->active)
 485                         SV_DropClient(false); // server shutdown
 486         SV_VM_End();
 487
 488         NetConn_CloseServerPorts();
 489
 490         sv.active = false;
 491 //
 492 // clear structures
 493 //
 494         memset(&sv, 0, sizeof(sv));
 495         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
 496 }
 497
 498
 499 //============================================================================
 500
 501 /*
 502 ===================
 503 Host_GetConsoleCommands
 504
 505 Add them exactly as if they had been typed at the console
 506 ===================
 507 */
 508 void Host_GetConsoleCommands (void)
 509 {
 510         char *cmd;
 511
 512         while (1)
 513         {
 514                 cmd = Sys_ConsoleInput ();
 515                 if (!cmd)
 516                         break;
 517                 Cbuf_AddText (cmd);
 518         }
 519 }
 520
 521 /*
 522 ==================
 523 Host_Frame
 524
 525 Runs all active servers
 526 ==================
 527 */
 528 static void Host_Init(void);
 529 void Host_Main(void)
 530 {
 531         double time1 = 0;
 532         double time2 = 0;
 533         double time3 = 0;
 534         double cl_timer, sv_timer;
 535         double clframetime, deltarealtime, oldrealtime;
 536         double wait;
 537         int pass1, pass2, pass3;
 538
 539         Host_Init();
 540
 541         cl_timer = 0;
 542         sv_timer = 0;
 543
 544         realtime = Sys_DoubleTime();
 545         for (;;)
 546         {
 547                 if (setjmp(host_abortframe))
 548                         continue;                       // something bad happened, or the server disconnected
 549
 550                 oldrealtime = realtime;
 551                 realtime = Sys_DoubleTime();
 552
 553                 deltarealtime = realtime - oldrealtime;
 554                 cl_timer += deltarealtime;
 555                 sv_timer += deltarealtime;
 556
 557                 if (slowmo.value < 0)
 558                         Cvar_SetValue("slowmo", 0);
 559                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
 560                         Cvar_SetValue("host_framerate", 0);
 561                 if (cl_maxfps.value < 1)
 562                         Cvar_SetValue("cl_maxfps", 1);
 563
 564                 // keep the random time dependent, but not when playing demos/benchmarking
 565                 if(!*sv_random_seed.string && !cls.demoplayback)
 566                         rand();
 567
 568                 cl.islocalgame = NetConn_IsLocalGame();
 569
 570                 // get new key events
 571                 Sys_SendKeyEvents();
 572
 573                 NetConn_UpdateSockets();
 574
 575                 // receive packets on each main loop iteration, as the main loop may
 576                 // be undersleeping due to select() detecting a new packet
 577                 if (sv.active)
 578                         NetConn_ServerFrame();
 579
 580                 Curl_Run();
 581
 582                 // check for commands typed to the host
 583                 Host_GetConsoleCommands();
 584
 585                 // when a server is running we only execute console commands on server frames
 586                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
 587                 // otherwise we execute them on all frames
 588                 if (sv_timer > 0 || !sv.active)
 589                 {
 590                         // process console commands
 591                         Cbuf_Execute();
 592                 }
 593
 594                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
 595
 596                 // if the accumulators haven't become positive yet, wait a while
 597                 if (cls.state == ca_dedicated)
 598                         wait = sv_timer * -1000000.0;
 599                 else if (!sv.active)
 600                         wait = cl_timer * -1000000.0;
 601                 else
 602                         wait = max(cl_timer, sv_timer) * -1000000.0;
 603                 if (wait > 100000)
 604                         wait = 100000;
 605                 if (!cls.timedemo && wait > 0)
 606                 {
 607                         if (sv_checkforpacketsduringsleep.integer)
 608                         {
 609                                 if (wait >= 1)
 610                                         NetConn_SleepMicroseconds((int)wait);
 611                         }
 612                         else
 613                         {
 614                                 if (wait >= 1000)
 615                                         Sys_Sleep((int)wait / 1000);
 616                         }
 617                         continue;
 618                 }
 619
 620         //-------------------
 621         //
 622         // server operations
 623         //
 624         //-------------------
 625
 626                 // limit the frametime steps to no more than 100ms each
 627                 if (cl_timer > 0.1)
 628                         cl_timer = 0.1;
 629                 if (sv_timer > 0.1)
 630                         sv_timer = 0.1;
 631
 632                 if (sv.active && sv_timer > 0)
 633                 {
 634                         // execute one or more server frames, with an upper limit on how much
 635                         // execution time to spend on server frames to avoid freezing the game if
 636                         // the server is overloaded, this execution time limit means the game will
 637                         // slow down if the server is taking too long.
 638                         int framecount, framelimit = 1;
 639                         double advancetime, aborttime = 0;
 640
 641                         // run the world state
 642                         // don't allow simulation to run too fast or too slow or logic glitches can occur
 643
 644                         // stop running server frames if the wall time reaches this value
 645                         if (sys_ticrate.value <= 0)
 646                                 advancetime = sv_timer;
 647                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
 648                         {
 649                                 // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
 650                                 advancetime = bound(0.01, cl_timer, sys_ticrate.value);
 651                                 framelimit = 10;
 652                                 aborttime = realtime + 0.1;
 653                         }
 654                         else
 655                         {
 656                                 advancetime = sys_ticrate.value;
 657                                 // listen servers can run multiple server frames per client frame
 658                                 if (cls.state == ca_connected)
 659                                 {
 660                                         framelimit = 10;
 661                                         aborttime = realtime + 0.1;
 662                                 }
 663                         }
 664                         advancetime = min(advancetime, 0.1);
 665
 666                         // only advance time if not paused
 667                         // the game also pauses in singleplayer when menu or console is used
 668                         sv.frametime = advancetime * slowmo.value;
 669                         if (host_framerate.value)
 670                                 sv.frametime = host_framerate.value;
 671                         if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
 672                                 sv.frametime = 0;
 673
 674                         // setup the VM frame
 675                         SV_VM_Begin();
 676
 677                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
 678                         {
 679                                 sv_timer -= advancetime;
 680
 681                                 // move things around and think unless paused
 682                                 if (sv.frametime)
 683                                         SV_Physics();
 684
 685                                 // if this server frame took too long, break out of the loop
 686                                 if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
 687                                         break;
 688                         }
 689
 690                         // send all messages to the clients
 691                         SV_SendClientMessages();
 692
 693                         // end the server VM frame
 694                         SV_VM_End();
 695
 696                         // send an heartbeat if enough time has passed since the last one
 697                         NetConn_Heartbeat(0);
 698                 }
 699
 700         //-------------------
 701         //
 702         // client operations
 703         //
 704         //-------------------
 705
 706                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo))
 707                 {
 708                         // decide the simulation time
 709                         if (cls.capturevideo.active)
 710                         {
 711                                 if (cls.capturevideo.realtime)
 712                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
 713                                 else
 714                                 {
 715                                         clframetime = 1.0 / cls.capturevideo.framerate;
 716                                         cl.realframetime = max(cl_timer, clframetime);
 717                                 }
 718                         }
 719                         else if (vid_activewindow)
 720                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxfps.value);
 721                         else
 722                                 clframetime = cl.realframetime = 0.1;
 723
 724                         // apply slowmo scaling
 725                         clframetime *= cl.movevars_timescale;
 726                         // scale playback speed of demos by slowmo cvar
 727                         if (cls.demoplayback)
 728                         {
 729                                 clframetime *= slowmo.value;
 730                                 // if demo playback is paused, don't advance time at all
 731                                 if (cls.demopaused)
 732                                         clframetime = 0;
 733                         }
 734
 735                         // host_framerate overrides all else
 736                         if (host_framerate.value)
 737                                 clframetime = host_framerate.value;
 738
 739                         if (cls.timedemo)
 740                                 clframetime = cl.realframetime = cl_timer;
 741
 742                         // deduct the frame time from the accumulator
 743                         cl_timer -= cl.realframetime;
 744
 745                         cl.oldtime = cl.time;
 746                         cl.time += clframetime;
 747
 748                         // Collect input into cmd
 749                         CL_Input();
 750
 751                         // check for new packets
 752                         NetConn_ClientFrame();
 753
 754                         // read a new frame from a demo if needed
 755                         CL_ReadDemoMessage();
 756
 757                         // now that packets have been read, send input to server
 758                         CL_SendMove();
 759
 760                         // update client world (interpolate entities, create trails, etc)
 761                         CL_UpdateWorld();
 762
 763                         // update video
 764                         if (host_speeds.integer)
 765                                 time1 = Sys_DoubleTime();
 766
 767                         //ui_update();
 768
 769                         CL_VideoFrame();
 770
 771                         CL_UpdateScreen();
 772
 773                         if (host_speeds.integer)
 774                                 time2 = Sys_DoubleTime();
 775
 776                         // update audio
 777                         if(cl.csqc_usecsqclistener)
 778                         {
 779                                 S_Update(&cl.csqc_listenermatrix);
 780                                 cl.csqc_usecsqclistener = false;
 781                         }
 782                         else
 783                                 S_Update(&r_view.matrix);
 784
 785                         CDAudio_Update();
 786
 787                         if (host_speeds.integer)
 788                         {
 789                                 pass1 = (int)((time1 - time3)*1000000);
 790                                 time3 = Sys_DoubleTime();
 791                                 pass2 = (int)((time2 - time1)*1000000);
 792                                 pass3 = (int)((time3 - time2)*1000000);
 793                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
 794                                                         pass1+pass2+pass3, pass1, pass2, pass3);
 795                         }
 796                 }
 797
 798                 // if there is some time remaining from this frame, reset the timers
 799                 if (cl_timer >= 0)
 800                         cl_timer = 0;
 801                 if (sv_timer >= 0)
 802                         sv_timer = 0;
 803
 804                 host_framecount++;
 805         }
 806 }
 807
 808 //============================================================================
 809
 810 qboolean vid_opened = false;
 811 void Host_StartVideo(void)
 812 {
 813         if (!vid_opened && cls.state != ca_dedicated)
 814         {
 815                 vid_opened = true;
 816                 VID_Start();
 817                 CDAudio_Startup();
 818         }
 819 }
 820
 821 char engineversion[128];
 822
 823 qboolean sys_nostdout = false;
 824
 825 extern void Render_Init(void);
 826 extern void Mathlib_Init(void);
 827 extern void FS_Init(void);
 828 extern void FS_Shutdown(void);
 829 extern void PR_Cmd_Init(void);
 830 extern void COM_Init_Commands(void);
 831 extern void FS_Init_Commands(void);
 832 extern qboolean host_stuffcmdsrun;
 833
 834 /*
 835 ====================
 836 Host_Init
 837 ====================
 838 */
 839 static void Host_Init (void)
 840 {
 841         int i;
 842         const char* os;
 843
 844         // LordHavoc: quake never seeded the random number generator before... heh
 845         if (COM_CheckParm("-benchmark"))
 846                 srand(0); // predictable random sequence for -benchmark
 847         else
 848                 srand(time(NULL));
 849
 850         // FIXME: this is evil, but possibly temporary
 851 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
 852         if (COM_CheckParm("-developer"))
 853         {
 854                 developer.value = developer.integer = 100;
 855                 developer.string = "100";
 856         }
 857
 858         if (COM_CheckParm("-developer2"))
 859         {
 860                 developer.value = developer.integer = 100;
 861                 developer.string = "100";
 862                 developer_memory.value = developer_memory.integer = 100;
 863                 developer.string = "100";
 864                 developer_memorydebug.value = developer_memorydebug.integer = 100;
 865                 developer_memorydebug.string = "100";
 866         }
 867
 868 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
 869         if (COM_CheckParm("-nostdout"))
 870                 sys_nostdout = 1;
 871
 872         // used by everything
 873         Memory_Init();
 874
 875         // initialize console command/cvar/alias/command execution systems
 876         Cmd_Init();
 877
 878         // initialize memory subsystem cvars/commands
 879         Memory_Init_Commands();
 880
 881         // initialize console and logging and its cvars/commands
 882         Con_Init();
 883
 884         // initialize various cvars that could not be initialized earlier
 885         Curl_Init_Commands();
 886         Cmd_Init_Commands();
 887         Sys_Init_Commands();
 888         COM_Init_Commands();
 889         FS_Init_Commands();
 890
 891         // initialize console window (only used by sys_win.c)
 892         Sys_InitConsole();
 893
 894         // detect gamemode from commandline options or executable name
 895         COM_InitGameType();
 896
 897         // construct a version string for the corner of the console
 898 #if defined(__linux__)
 899         os = "Linux";
 900 #elif defined(WIN32)
 901         os = "Windows";
 902 #elif defined(__FreeBSD__)
 903         os = "FreeBSD";
 904 #elif defined(__NetBSD__)
 905         os = "NetBSD";
 906 #elif defined(__OpenBSD__)
 907         os = "OpenBSD";
 908 #elif defined(MACOSX)
 909         os = "Mac OS X";
 910 #elif defined(__MORPHOS__)
 911         os = "MorphOS";
 912 #else
 913         os = "Unknown";
 914 #endif
 915         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
 916         Con_Printf("%s\n", engineversion);
 917
 918         // initialize ixtable
 919         Mathlib_Init();
 920
 921         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
 922         FS_Init();
 923
 924         NetConn_Init();
 925         Curl_Init();
 926         //PR_Init();
 927         //PR_Cmd_Init();
 928         PRVM_Init();
 929         Mod_Init();
 930         World_Init();
 931         SV_Init();
 932         Host_InitCommands();
 933         Host_InitLocal();
 934         Host_ServerOptions();
 935
 936         if (cls.state != ca_dedicated)
 937         {
 938                 Con_Printf("Initializing client\n");
 939
 940                 R_Modules_Init();
 941                 Palette_Init();
 942                 MR_Init_Commands();
 943                 VID_Shared_Init();
 944                 VID_Init();
 945                 Render_Init();
 946                 S_Init();
 947                 CDAudio_Init();
 948                 Key_Init();
 949                 V_Init();
 950                 CL_Init();
 951         }
 952
 953         // set up the default startmap_sp and startmap_dm aliases (mods can
 954         // override these) and then execute the quake.rc startup script
 955         if (gamemode == GAME_NEHAHRA)
 956                 Cbuf_AddText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec quake.rc\n");
 957         else if (gamemode == GAME_TRANSFUSION)
 958                 Cbuf_AddText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec quake.rc\n");
 959         else if (gamemode == GAME_TEU)
 960                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
 961         else
 962                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec quake.rc\n");
 963         Cbuf_Execute();
 964
 965         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
 966         if (!host_stuffcmdsrun)
 967         {
 968                 Cbuf_AddText("exec default.cfg\nexec config.cfg\nexec autoexec.cfg\nstuffcmds\n");
 969                 Cbuf_Execute();
 970         }
 971
 972         // put up the loading image so the user doesn't stare at a black screen...
 973         SCR_BeginLoadingPlaque();
 974
 975         // FIXME: put this into some neat design, but the menu should be allowed to crash
 976         // without crashing the whole game, so this should just be a short-time solution
 977
 978         // here comes the not so critical stuff
 979         if (setjmp(host_abortframe)) {
 980                 return;
 981         }
 982
 983         if (cls.state != ca_dedicated)
 984         {
 985                 MR_Init();
 986         }
 987
 988         // check for special benchmark mode
 989 // 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)
 990         i = COM_CheckParm("-benchmark");
 991         if (i && i + 1 < com_argc)
 992         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
 993         {
 994                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
 995                 Cbuf_Execute();
 996         }
 997
 998         // check for special demo mode
 999 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1000         i = COM_CheckParm("-demo");
1001         if (i && i + 1 < com_argc)
1002         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1003         {
1004                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1005                 Cbuf_Execute();
1006         }
1007
1008         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1009         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1010         {
1011                 Cbuf_AddText("startmap_dm\n");
1012                 Cbuf_Execute();
1013         }
1014
1015         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1016         {
1017                 if (gamemode == GAME_NEXUIZ)
1018                         Cbuf_AddText("togglemenu\nplayvideo logo\ncd loop 1\n");
1019                 else
1020                         Cbuf_AddText("togglemenu\n");
1021                 Cbuf_Execute();
1022         }
1023
1024         Con_DPrint("========Initialized=========\n");
1025
1026         //Host_StartVideo();
1027 }
1028
1029
1030 /*
1031 ===============
1032 Host_Shutdown
1033
1034 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1035 to run quit through here before the final handoff to the sys code.
1036 ===============
1037 */
1038 void Host_Shutdown(void)
1039 {
1040         static qboolean isdown = false;
1041
1042         if (isdown)
1043         {
1044                 Con_Print("recursive shutdown\n");
1045                 return;
1046         }
1047         isdown = true;
1048
1049         // be quiet while shutting down
1050         S_StopAllSounds();
1051
1052         // disconnect client from server if active
1053         CL_Disconnect();
1054
1055         // shut down local server if active
1056         Host_ShutdownServer ();
1057
1058         // Shutdown menu
1059         if(MR_Shutdown)
1060                 MR_Shutdown();
1061
1062         // AK shutdown PRVM
1063         // AK hmm, no PRVM_Shutdown(); yet
1064
1065         CL_Video_Shutdown();
1066
1067         Host_SaveConfig_f();
1068
1069         CDAudio_Shutdown ();
1070         S_Terminate ();
1071         Curl_Shutdown ();
1072         NetConn_Shutdown ();
1073         //PR_Shutdown ();
1074
1075         if (cls.state != ca_dedicated)
1076         {
1077                 R_Modules_Shutdown();
1078                 VID_Shutdown();
1079         }
1080
1081         Cmd_Shutdown();
1082         CL_Shutdown();
1083         Sys_Shutdown();
1084         Log_Close();
1085         FS_Shutdown();
1086         Memory_Shutdown();
1087 }
1088