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 "quakedef.h"
  23
  24 #include <time.h>
  25 #include "libcurl.h"
  26 #include "cdaudio.h"
  27 #include "cl_gecko.h"
  28 #include "cl_video.h"
  29 #include "progsvm.h"
  30 #include "csprogs.h"
  31 #include "sv_demo.h"
  32
  33 /*
  34
  35 A server can always be started, even if the system started out as a client
  36 to a remote system.
  37
  38 A client can NOT be started if the system started as a dedicated server.
  39
  40 Memory is cleared / released when a server or client begins, not when they end.
  41
  42 */
  43
  44 // how many frames have occurred
  45 // (checked by Host_Error and Host_SaveConfig_f)
  46 int host_framecount = 0;
  47 // LordHavoc: set when quit is executed
  48 qboolean host_shuttingdown = false;
  49
  50 // the real time since application started, without any slowmo or clamping
  51 double realtime;
  52
  53 // current client
  54 client_t *host_client;
  55
  56 jmp_buf host_abortframe;
  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 cl_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 cvar_t cl_minfps = {CVAR_SAVE, "cl_minfps", "40", "minimum fps target - while the rendering performance is below this, it will drift toward lower quality"};
  63 cvar_t cl_minfps_logbase = {CVAR_SAVE, "cl_minfps_logbase", "1.2", "base for log() function in calculating quality reduction, should be in the range 1.1 to 2.0"};
  64 cvar_t cl_minfps_fade = {CVAR_SAVE, "cl_minfps_fade", "0.2", "how fast the quality reduction adapts to varying framerate"};
  65 cvar_t cl_minfps_maxqualityreduction = {CVAR_SAVE, "cl_minfps_maxqualityreduction", "2", "how much particle quality can be reduced (as a power of 2) when framerate is staying below cl_minfps, 0 = no reduction, 1 = 50% quality, 2 = 25% quality, 3 = 12.5% quality, ..."};
  66 cvar_t cl_maxfps = {CVAR_SAVE, "cl_maxfps", "1000000", "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)"};
  67 cvar_t cl_maxidlefps = {CVAR_SAVE, "cl_maxidlefps", "20", "maximum fps cap when the game is not the active window (makes cpu time available to other programs"};
  68
  69 cvar_t developer = {0, "developer","0", "prints additional debugging messages and information (recommended for modders and level designers)"};
  70 cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
  71
  72 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
  73 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
  74
  75 /*
  76 ================
  77 Host_AbortCurrentFrame
  78
  79 aborts the current host frame and goes on with the next one
  80 ================
  81 */
  82 void Host_AbortCurrentFrame(void)
  83 {
  84         longjmp (host_abortframe, 1);
  85 }
  86
  87 /*
  88 ================
  89 Host_Error
  90
  91 This shuts down both the client and server
  92 ================
  93 */
  94 void Host_Error (const char *error, ...)
  95 {
  96         static char hosterrorstring1[MAX_INPUTLINE];
  97         static char hosterrorstring2[MAX_INPUTLINE];
  98         static qboolean hosterror = false;
  99         va_list argptr;
 100
 101         // turn off rcon redirect if it was active when the crash occurred
 102         rcon_redirect = false;
 103
 104         va_start (argptr,error);
 105         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
 106         va_end (argptr);
 107
 108         Con_Printf("Host_Error: %s\n", hosterrorstring1);
 109
 110         // LordHavoc: if crashing very early, or currently shutting down, do
 111         // Sys_Error instead
 112         if (host_framecount < 3 || host_shuttingdown)
 113                 Sys_Error ("Host_Error: %s", hosterrorstring1);
 114
 115         if (hosterror)
 116                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
 117         hosterror = true;
 118
 119         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
 120
 121         CL_Parse_DumpPacket();
 122
 123         CL_Parse_ErrorCleanUp();
 124
 125         //PR_Crash();
 126
 127         // print out where the crash happened, if it was caused by QC (and do a cleanup)
 128         PRVM_Crash();
 129
 130
 131         Host_ShutdownServer ();
 132
 133         if (cls.state == ca_dedicated)
 134                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
 135
 136         CL_Disconnect ();
 137         cls.demonum = -1;
 138
 139         hosterror = false;
 140
 141         Host_AbortCurrentFrame();
 142 }
 143
 144 void Host_ServerOptions (void)
 145 {
 146         int i;
 147
 148         // general default
 149         svs.maxclients = 8;
 150
 151 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
 152 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
 153         // if no client is in the executable or -dedicated is specified on
 154         // commandline, start a dedicated server
 155         i = COM_CheckParm ("-dedicated");
 156         if (i || !cl_available)
 157         {
 158                 cls.state = ca_dedicated;
 159                 // check for -dedicated specifying how many players
 160                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 161                         svs.maxclients = atoi (com_argv[i+1]);
 162                 if (COM_CheckParm ("-listen"))
 163                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
 164                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
 165                 Cvar_SetValue("sv_public", 1);
 166         }
 167         else if (cl_available)
 168         {
 169                 // client exists and not dedicated, check if -listen is specified
 170                 cls.state = ca_disconnected;
 171                 i = COM_CheckParm ("-listen");
 172                 if (i)
 173                 {
 174                         // default players unless specified
 175                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 176                                 svs.maxclients = atoi (com_argv[i+1]);
 177                 }
 178                 else
 179                 {
 180                         // default players in some games, singleplayer in most
 181                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_BATTLEMECH)
 182                                 svs.maxclients = 1;
 183                 }
 184         }
 185
 186         svs.maxclients = bound(1, svs.maxclients, MAX_SCOREBOARD);
 187
 188         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
 189
 190         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
 191                 Cvar_SetValueQuick(&deathmatch, 1);
 192 }
 193
 194 /*
 195 =======================
 196 Host_InitLocal
 197 ======================
 198 */
 199 void Host_SaveConfig_f(void);
 200 void Host_LoadConfig_f(void);
 201 static void Host_InitLocal (void)
 202 {
 203         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg (or a specified filename) immediately (also automatic when quitting)");
 204         Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
 205
 206         Cvar_RegisterVariable (&host_framerate);
 207         Cvar_RegisterVariable (&host_speeds);
 208         Cvar_RegisterVariable (&cl_minfps);
 209         Cvar_RegisterVariable (&cl_minfps_logbase);
 210         Cvar_RegisterVariable (&cl_minfps_fade);
 211         Cvar_RegisterVariable (&cl_minfps_maxqualityreduction);
 212         Cvar_RegisterVariable (&cl_maxfps);
 213         Cvar_RegisterVariable (&cl_maxidlefps);
 214
 215         Cvar_RegisterVariable (&developer);
 216         Cvar_RegisterVariable (&developer_entityparsing);
 217
 218         Cvar_RegisterVariable (&timestamps);
 219         Cvar_RegisterVariable (&timeformat);
 220 }
 221
 222
 223 /*
 224 ===============
 225 Host_SaveConfig_f
 226
 227 Writes key bindings and archived cvars to config.cfg
 228 ===============
 229 */
 230 void Host_SaveConfig_to(const char *file)
 231 {
 232         qfile_t *f;
 233
 234 // dedicated servers initialize the host but don't parse and set the
 235 // config.cfg cvars
 236         // LordHavoc: don't save a config if it crashed in startup
 237         if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))
 238         {
 239                 f = FS_Open (file, "wb", false, false);
 240                 if (!f)
 241                 {
 242                         Con_Printf("Couldn't write %s.\n", file);
 243                         return;
 244                 }
 245
 246                 Key_WriteBindings (f);
 247                 Cvar_WriteVariables (f);
 248
 249                 FS_Close (f);
 250         }
 251 }
 252 void Host_SaveConfig(void)
 253 {
 254         Host_SaveConfig_to("config.cfg");
 255 }
 256 void Host_SaveConfig_f(void)
 257 {
 258         const char *file = "config.cfg";
 259
 260         if(Cmd_Argc() >= 2) {
 261                 file = Cmd_Argv(1);
 262                 Con_Printf("Saving to %s\n", file);
 263         }
 264
 265         Host_SaveConfig_to(file);
 266 }
 267
 268 /*
 269 ===============
 270 Host_LoadConfig_f
 271
 272 Resets key bindings and cvars to defaults and then reloads scripts
 273 ===============
 274 */
 275 void Host_LoadConfig_f(void)
 276 {
 277         // unlock the cvar default strings so they can be updated by the new default.cfg
 278         Cvar_UnlockDefaults();
 279         // reset cvars to their defaults, and then exec startup scripts again
 280         Cbuf_InsertText("cvar_resettodefaults_all;exec quake.rc\n");
 281 }
 282
 283 /*
 284 =================
 285 SV_ClientPrint
 286
 287 Sends text across to be displayed
 288 FIXME: make this just a stuffed echo?
 289 =================
 290 */
 291 void SV_ClientPrint(const char *msg)
 292 {
 293         if (host_client->netconnection)
 294         {
 295                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
 296                 MSG_WriteString(&host_client->netconnection->message, msg);
 297         }
 298 }
 299
 300 /*
 301 =================
 302 SV_ClientPrintf
 303
 304 Sends text across to be displayed
 305 FIXME: make this just a stuffed echo?
 306 =================
 307 */
 308 void SV_ClientPrintf(const char *fmt, ...)
 309 {
 310         va_list argptr;
 311         char msg[MAX_INPUTLINE];
 312
 313         va_start(argptr,fmt);
 314         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 315         va_end(argptr);
 316
 317         SV_ClientPrint(msg);
 318 }
 319
 320 /*
 321 =================
 322 SV_BroadcastPrint
 323
 324 Sends text to all active clients
 325 =================
 326 */
 327 void SV_BroadcastPrint(const char *msg)
 328 {
 329         int i;
 330         client_t *client;
 331
 332         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
 333         {
 334                 if (client->active && client->netconnection)
 335                 {
 336                         MSG_WriteByte(&client->netconnection->message, svc_print);
 337                         MSG_WriteString(&client->netconnection->message, msg);
 338                 }
 339         }
 340
 341         if (sv_echobprint.integer && cls.state == ca_dedicated)
 342                 Con_Print(msg);
 343 }
 344
 345 /*
 346 =================
 347 SV_BroadcastPrintf
 348
 349 Sends text to all active clients
 350 =================
 351 */
 352 void SV_BroadcastPrintf(const char *fmt, ...)
 353 {
 354         va_list argptr;
 355         char msg[MAX_INPUTLINE];
 356
 357         va_start(argptr,fmt);
 358         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 359         va_end(argptr);
 360
 361         SV_BroadcastPrint(msg);
 362 }
 363
 364 /*
 365 =================
 366 Host_ClientCommands
 367
 368 Send text over to the client to be executed
 369 =================
 370 */
 371 void Host_ClientCommands(const char *fmt, ...)
 372 {
 373         va_list argptr;
 374         char string[MAX_INPUTLINE];
 375
 376         if (!host_client->netconnection)
 377                 return;
 378
 379         va_start(argptr,fmt);
 380         dpvsnprintf(string, sizeof(string), fmt, argptr);
 381         va_end(argptr);
 382
 383         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
 384         MSG_WriteString(&host_client->netconnection->message, string);
 385 }
 386
 387 /*
 388 =====================
 389 SV_DropClient
 390
 391 Called when the player is getting totally kicked off the host
 392 if (crash = true), don't bother sending signofs
 393 =====================
 394 */
 395 void SV_DropClient(qboolean crash)
 396 {
 397         int i;
 398         Con_Printf("Client \"%s\" dropped\n", host_client->name);
 399
 400         SV_StopDemoRecording(host_client);
 401
 402         // make sure edict is not corrupt (from a level change for example)
 403         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
 404
 405         if (host_client->netconnection)
 406         {
 407                 // free the client (the body stays around)
 408                 if (!crash)
 409                 {
 410                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
 411                         unsigned char bufdata[8];
 412                         sizebuf_t buf;
 413                         memset(&buf, 0, sizeof(buf));
 414                         buf.data = bufdata;
 415                         buf.maxsize = sizeof(bufdata);
 416                         MSG_WriteByte(&buf, svc_disconnect);
 417                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 418                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 419                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 420                 }
 421                 // break the net connection
 422                 NetConn_Close(host_client->netconnection);
 423                 host_client->netconnection = NULL;
 424         }
 425
 426         // call qc ClientDisconnect function
 427         // LordHavoc: don't call QC if server is dead (avoids recursive
 428         // Host_Error in some mods when they run out of edicts)
 429         if (host_client->clientconnectcalled && sv.active && host_client->edict)
 430         {
 431                 // call the prog function for removing a client
 432                 // this will set the body to a dead frame, among other things
 433                 int saveSelf = prog->globals.server->self;
 434                 host_client->clientconnectcalled = false;
 435                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
 436                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
 437                 prog->globals.server->self = saveSelf;
 438         }
 439
 440         // if a download is active, close it
 441         if (host_client->download_file)
 442         {
 443                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
 444                 FS_Close(host_client->download_file);
 445                 host_client->download_file = NULL;
 446                 host_client->download_name[0] = 0;
 447                 host_client->download_expectedposition = 0;
 448                 host_client->download_started = false;
 449         }
 450
 451         // remove leaving player from scoreboard
 452         host_client->name[0] = 0;
 453         host_client->colors = 0;
 454         host_client->frags = 0;
 455         // send notification to all clients
 456         // get number of client manually just to make sure we get it right...
 457         i = host_client - svs.clients;
 458         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
 459         MSG_WriteByte (&sv.reliable_datagram, i);
 460         MSG_WriteString (&sv.reliable_datagram, host_client->name);
 461         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
 462         MSG_WriteByte (&sv.reliable_datagram, i);
 463         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
 464         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
 465         MSG_WriteByte (&sv.reliable_datagram, i);
 466         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
 467
 468         // free the client now
 469         if (host_client->entitydatabase)
 470                 EntityFrame_FreeDatabase(host_client->entitydatabase);
 471         if (host_client->entitydatabase4)
 472                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
 473         if (host_client->entitydatabase5)
 474                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
 475
 476         if (sv.active)
 477         {
 478                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
 479                 PRVM_ED_ClearEdict(host_client->edict);
 480         }
 481
 482         // clear the client struct (this sets active to false)
 483         memset(host_client, 0, sizeof(*host_client));
 484
 485         // update server listing on the master because player count changed
 486         // (which the master uses for filtering empty/full servers)
 487         NetConn_Heartbeat(1);
 488
 489         if (sv.loadgame)
 490         {
 491                 for (i = 0;i < svs.maxclients;i++)
 492                         if (svs.clients[i].active && !svs.clients[i].spawned)
 493                                 break;
 494                 if (i == svs.maxclients)
 495                 {
 496                         Con_Printf("Loaded game, everyone rejoined - unpausing\n");
 497                         sv.paused = sv.loadgame = false; // we're basically done with loading now
 498                 }
 499         }
 500 }
 501
 502 /*
 503 ==================
 504 Host_ShutdownServer
 505
 506 This only happens at the end of a game, not between levels
 507 ==================
 508 */
 509 void Host_ShutdownServer(void)
 510 {
 511         int i;
 512
 513         Con_DPrintf("Host_ShutdownServer\n");
 514
 515         if (!sv.active)
 516                 return;
 517
 518         NetConn_Heartbeat(2);
 519         NetConn_Heartbeat(2);
 520
 521 // make sure all the clients know we're disconnecting
 522         SV_VM_Begin();
 523         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 524                 if (host_client->active)
 525                         SV_DropClient(false); // server shutdown
 526         if(prog->loaded)
 527                 if(prog->funcoffsets.SV_Shutdown)
 528                 {
 529                         func_t s = prog->funcoffsets.SV_Shutdown;
 530                         prog->funcoffsets.SV_Shutdown = 0; // prevent it from getting called again
 531                         PRVM_ExecuteProgram(s,"SV_Shutdown() required");
 532                 }
 533         SV_VM_End();
 534
 535         NetConn_CloseServerPorts();
 536
 537         sv.active = false;
 538 //
 539 // clear structures
 540 //
 541         memset(&sv, 0, sizeof(sv));
 542         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
 543 }
 544
 545
 546 //============================================================================
 547
 548 /*
 549 ===================
 550 Host_GetConsoleCommands
 551
 552 Add them exactly as if they had been typed at the console
 553 ===================
 554 */
 555 void Host_GetConsoleCommands (void)
 556 {
 557         char *cmd;
 558
 559         while (1)
 560         {
 561                 cmd = Sys_ConsoleInput ();
 562                 if (!cmd)
 563                         break;
 564                 Cbuf_AddText (cmd);
 565         }
 566 }
 567
 568 /*
 569 ==================
 570 Host_TimeReport
 571
 572 Returns a time report string, for example for
 573 ==================
 574 */
 575 const char *Host_TimingReport()
 576 {
 577         return va("%.1f%% CPU, %.2f%% lost, offset avg %.1fms, max %.1fms, sdev %.1fms", svs.perf_cpuload * 100, svs.perf_lost * 100, svs.perf_offset_avg * 1000, svs.perf_offset_max * 1000, svs.perf_offset_sdev * 1000);
 578 }
 579
 580 /*
 581 ==================
 582 Host_Frame
 583
 584 Runs all active servers
 585 ==================
 586 */
 587 static void Host_Init(void);
 588 void Host_Main(void)
 589 {
 590         double time1 = 0;
 591         double time2 = 0;
 592         double time3 = 0;
 593         double cl_timer, sv_timer;
 594         double clframetime, deltarealtime, oldrealtime;
 595         double wait;
 596         int pass1, pass2, pass3, i;
 597
 598         Host_Init();
 599
 600         cl_timer = 0;
 601         sv_timer = 0;
 602
 603         realtime = Sys_DoubleTime();
 604         for (;;)
 605         {
 606                 if (setjmp(host_abortframe))
 607                         continue;                       // something bad happened, or the server disconnected
 608
 609                 oldrealtime = realtime;
 610                 realtime = Sys_DoubleTime();
 611
 612                 deltarealtime = realtime - oldrealtime;
 613                 cl_timer += deltarealtime;
 614                 sv_timer += deltarealtime;
 615
 616                 svs.perf_acc_realtime += deltarealtime;
 617
 618                 // Look for clients who have spawned
 619                 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 620                         if(host_client->spawned)
 621                                 if(host_client->netconnection)
 622                                         break;
 623                 if(i == svs.maxclients)
 624                 {
 625                         // Nobody is looking? Then we won't do timing...
 626                         // Instead, reset it to zero
 627                         svs.perf_acc_realtime = svs.perf_acc_sleeptime = svs.perf_acc_lost = svs.perf_acc_offset = svs.perf_acc_offset_squared = svs.perf_acc_offset_max = svs.perf_acc_offset_samples = 0;
 628                 }
 629                 else if(svs.perf_acc_realtime > 5)
 630                 {
 631                         svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
 632                         svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
 633                         if(svs.perf_acc_offset_samples > 0)
 634                         {
 635                                 svs.perf_offset_max = svs.perf_acc_offset_max;
 636                                 svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
 637                                 svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
 638                         }
 639                         if(svs.perf_lost > 0)
 640                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport());
 641                         svs.perf_acc_realtime = svs.perf_acc_sleeptime = svs.perf_acc_lost = svs.perf_acc_offset = svs.perf_acc_offset_squared = svs.perf_acc_offset_max = svs.perf_acc_offset_samples = 0;
 642                 }
 643
 644                 if (slowmo.value < 0.00001 && slowmo.value != 0)
 645                         Cvar_SetValue("slowmo", 0);
 646                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
 647                         Cvar_SetValue("host_framerate", 0);
 648
 649                 // keep the random time dependent, but not when playing demos/benchmarking
 650                 if(!*sv_random_seed.string && !cls.demoplayback)
 651                         rand();
 652
 653                 cl.islocalgame = NetConn_IsLocalGame();
 654
 655                 // get new key events
 656                 Sys_SendKeyEvents();
 657
 658                 NetConn_UpdateSockets();
 659
 660                 Log_DestBuffer_Flush();
 661
 662                 // receive packets on each main loop iteration, as the main loop may
 663                 // be undersleeping due to select() detecting a new packet
 664                 if (sv.active)
 665                         NetConn_ServerFrame();
 666
 667                 Curl_Run();
 668
 669                 // check for commands typed to the host
 670                 Host_GetConsoleCommands();
 671
 672                 // when a server is running we only execute console commands on server frames
 673                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
 674                 // otherwise we execute them on all frames
 675                 if (sv_timer > 0 || !sv.active)
 676                 {
 677                         // process console commands
 678                         Cbuf_Execute();
 679                 }
 680
 681                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
 682
 683                 // if the accumulators haven't become positive yet, wait a while
 684                 if (cls.state == ca_dedicated)
 685                         wait = sv_timer * -1000000.0;
 686                 else if (!sv.active)
 687                         wait = cl_timer * -1000000.0;
 688                 else
 689                         wait = max(cl_timer, sv_timer) * -1000000.0;
 690                 if (wait > 100000)
 691                         wait = 100000;
 692
 693                 if (!cls.timedemo && wait > 0)
 694                 {
 695                         double time0 = Sys_DoubleTime();
 696                         if (sv_checkforpacketsduringsleep.integer)
 697                         {
 698                                 if (wait >= 1)
 699                                         NetConn_SleepMicroseconds((int)wait);
 700                         }
 701                         else
 702                         {
 703                                 if (wait >= 1000)
 704                                         Sys_Sleep((int)wait / 1000);
 705                         }
 706                         svs.perf_acc_sleeptime += Sys_DoubleTime() - time0;
 707                         continue;
 708                 }
 709
 710         //-------------------
 711         //
 712         // server operations
 713         //
 714         //-------------------
 715
 716                 // limit the frametime steps to no more than 100ms each
 717                 if (cl_timer > 0.1)
 718                         cl_timer = 0.1;
 719                 if (sv_timer > 0.1)
 720                 {
 721                         svs.perf_acc_lost += (sv_timer - 0.1);
 722                         sv_timer = 0.1;
 723                 }
 724
 725                 if (sv.active && sv_timer > 0)
 726                 {
 727                         // execute one or more server frames, with an upper limit on how much
 728                         // execution time to spend on server frames to avoid freezing the game if
 729                         // the server is overloaded, this execution time limit means the game will
 730                         // slow down if the server is taking too long.
 731                         int framecount, framelimit = 1;
 732                         double advancetime, aborttime = 0;
 733                         float offset;
 734
 735                         // run the world state
 736                         // don't allow simulation to run too fast or too slow or logic glitches can occur
 737
 738                         // stop running server frames if the wall time reaches this value
 739                         if (sys_ticrate.value <= 0)
 740                                 advancetime = sv_timer;
 741                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
 742                         {
 743                                 // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
 744                                 advancetime = bound(0.01, cl_timer, sys_ticrate.value);
 745                                 framelimit = 10;
 746                                 aborttime = realtime + 0.1;
 747                         }
 748                         else
 749                         {
 750                                 advancetime = sys_ticrate.value;
 751                                 // listen servers can run multiple server frames per client frame
 752                                 if (cls.state == ca_connected)
 753                                 {
 754                                         framelimit = 10;
 755                                         aborttime = realtime + 0.1;
 756                                 }
 757                         }
 758                         advancetime = min(advancetime, 0.1);
 759
 760                         if(advancetime > 0)
 761                         {
 762                                 offset = sv_timer + (Sys_DoubleTime() - realtime);
 763                                 ++svs.perf_acc_offset_samples;
 764                                 svs.perf_acc_offset += offset;
 765                                 svs.perf_acc_offset_squared += offset * offset;
 766                                 if(svs.perf_acc_offset_max < offset)
 767                                         svs.perf_acc_offset_max = offset;
 768                         }
 769
 770                         // only advance time if not paused
 771                         // the game also pauses in singleplayer when menu or console is used
 772                         sv.frametime = advancetime * slowmo.value;
 773                         if (host_framerate.value)
 774                                 sv.frametime = host_framerate.value;
 775                         if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
 776                                 sv.frametime = 0;
 777
 778                         // setup the VM frame
 779                         SV_VM_Begin();
 780
 781                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
 782                         {
 783                                 sv_timer -= advancetime;
 784
 785                                 // move things around and think unless paused
 786                                 if (sv.frametime)
 787                                         SV_Physics();
 788
 789                                 // if this server frame took too long, break out of the loop
 790                                 if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
 791                                         break;
 792                         }
 793
 794                         // send all messages to the clients
 795                         SV_SendClientMessages();
 796
 797                         // end the server VM frame
 798                         SV_VM_End();
 799
 800                         // send an heartbeat if enough time has passed since the last one
 801                         NetConn_Heartbeat(0);
 802                 }
 803
 804         //-------------------
 805         //
 806         // client operations
 807         //
 808         //-------------------
 809
 810                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo))
 811                 {
 812                         // decide the simulation time
 813                         if (cls.capturevideo.active)
 814                         {
 815                                 if (cls.capturevideo.realtime)
 816                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
 817                                 else
 818                                 {
 819                                         clframetime = 1.0 / cls.capturevideo.framerate;
 820                                         cl.realframetime = max(cl_timer, clframetime);
 821                                 }
 822                         }
 823                         else if (vid_activewindow)
 824                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxfps.value));
 825                         else
 826                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxidlefps.value));
 827
 828                         // apply slowmo scaling
 829                         clframetime *= cl.movevars_timescale;
 830                         // scale playback speed of demos by slowmo cvar
 831                         if (cls.demoplayback)
 832                         {
 833                                 clframetime *= slowmo.value;
 834                                 // if demo playback is paused, don't advance time at all
 835                                 if (cls.demopaused)
 836                                         clframetime = 0;
 837                         }
 838
 839                         // host_framerate overrides all else
 840                         if (host_framerate.value)
 841                                 clframetime = host_framerate.value;
 842
 843                         if (cls.timedemo)
 844                                 clframetime = cl.realframetime = cl_timer;
 845
 846                         // deduct the frame time from the accumulator
 847                         cl_timer -= cl.realframetime;
 848
 849                         cl.oldtime = cl.time;
 850                         cl.time += clframetime;
 851
 852                         // Collect input into cmd
 853                         CL_Input();
 854
 855                         // check for new packets
 856                         NetConn_ClientFrame();
 857
 858                         // read a new frame from a demo if needed
 859                         CL_ReadDemoMessage();
 860
 861                         // now that packets have been read, send input to server
 862                         CL_SendMove();
 863
 864                         // update client world (interpolate entities, create trails, etc)
 865                         CL_UpdateWorld();
 866
 867                         // update video
 868                         if (host_speeds.integer)
 869                                 time1 = Sys_DoubleTime();
 870
 871                         //ui_update();
 872
 873                         CL_Video_Frame();
 874                         CL_Gecko_Frame();
 875
 876                         CL_UpdateScreen();
 877
 878                         if (host_speeds.integer)
 879                                 time2 = Sys_DoubleTime();
 880
 881                         // update audio
 882                         if(cl.csqc_usecsqclistener)
 883                         {
 884                                 S_Update(&cl.csqc_listenermatrix);
 885                                 cl.csqc_usecsqclistener = false;
 886                         }
 887                         else
 888                                 S_Update(&r_refdef.view.matrix);
 889
 890                         CDAudio_Update();
 891
 892                         if (host_speeds.integer)
 893                         {
 894                                 pass1 = (int)((time1 - time3)*1000000);
 895                                 time3 = Sys_DoubleTime();
 896                                 pass2 = (int)((time2 - time1)*1000000);
 897                                 pass3 = (int)((time3 - time2)*1000000);
 898                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
 899                                                         pass1+pass2+pass3, pass1, pass2, pass3);
 900                         }
 901                 }
 902
 903                 // if there is some time remaining from this frame, reset the timers
 904                 if (cl_timer >= 0)
 905                         cl_timer = 0;
 906                 if (sv_timer >= 0)
 907                 {
 908                         svs.perf_acc_lost += sv_timer;
 909                         sv_timer = 0;
 910                 }
 911
 912                 host_framecount++;
 913         }
 914 }
 915
 916 //============================================================================
 917
 918 qboolean vid_opened = false;
 919 void Host_StartVideo(void)
 920 {
 921         if (!vid_opened && cls.state != ca_dedicated)
 922         {
 923                 vid_opened = true;
 924                 VID_Start();
 925                 CDAudio_Startup();
 926         }
 927 }
 928
 929 char engineversion[128];
 930
 931 qboolean sys_nostdout = false;
 932
 933 extern void Render_Init(void);
 934 extern void Mathlib_Init(void);
 935 extern void FS_Init(void);
 936 extern void FS_Shutdown(void);
 937 extern void PR_Cmd_Init(void);
 938 extern void COM_Init_Commands(void);
 939 extern void FS_Init_Commands(void);
 940 extern qboolean host_stuffcmdsrun;
 941
 942 /*
 943 ====================
 944 Host_Init
 945 ====================
 946 */
 947 static void Host_Init (void)
 948 {
 949         int i;
 950         const char* os;
 951
 952         if (COM_CheckParm("-profilegameonly"))
 953                 Sys_AllowProfiling(false);
 954
 955         // LordHavoc: quake never seeded the random number generator before... heh
 956         if (COM_CheckParm("-benchmark"))
 957                 srand(0); // predictable random sequence for -benchmark
 958         else
 959                 srand(time(NULL));
 960
 961         // FIXME: this is evil, but possibly temporary
 962 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
 963         if (COM_CheckParm("-developer"))
 964         {
 965                 developer.value = developer.integer = 100;
 966                 developer.string = "100";
 967         }
 968
 969         if (COM_CheckParm("-developer2"))
 970         {
 971                 developer.value = developer.integer = 100;
 972                 developer.string = "100";
 973                 developer_memory.value = developer_memory.integer = 100;
 974                 developer.string = "100";
 975                 developer_memorydebug.value = developer_memorydebug.integer = 100;
 976                 developer_memorydebug.string = "100";
 977         }
 978
 979 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
 980         if (COM_CheckParm("-nostdout"))
 981                 sys_nostdout = 1;
 982
 983         // used by everything
 984         Memory_Init();
 985
 986         // initialize console command/cvar/alias/command execution systems
 987         Cmd_Init();
 988
 989         // initialize memory subsystem cvars/commands
 990         Memory_Init_Commands();
 991
 992         // initialize console and logging and its cvars/commands
 993         Con_Init();
 994
 995         // initialize various cvars that could not be initialized earlier
 996         Curl_Init_Commands();
 997         Cmd_Init_Commands();
 998         Sys_Init_Commands();
 999         COM_Init_Commands();
1000         FS_Init_Commands();
1001
1002         // initialize console window (only used by sys_win.c)
1003         Sys_InitConsole();
1004
1005         // detect gamemode from commandline options or executable name
1006         COM_InitGameType();
1007
1008         // construct a version string for the corner of the console
1009         os = DP_OS_NAME;
1010         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
1011         Con_Printf("%s\n", engineversion);
1012
1013         // initialize ixtable
1014         Mathlib_Init();
1015
1016         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
1017         FS_Init();
1018
1019         NetConn_Init();
1020         Curl_Init();
1021         //PR_Init();
1022         //PR_Cmd_Init();
1023         PRVM_Init();
1024         Mod_Init();
1025         World_Init();
1026         SV_Init();
1027         Host_InitCommands();
1028         Host_InitLocal();
1029         Host_ServerOptions();
1030
1031         if (cls.state != ca_dedicated)
1032         {
1033                 Con_Printf("Initializing client\n");
1034
1035                 R_Modules_Init();
1036                 Palette_Init();
1037                 MR_Init_Commands();
1038                 VID_Shared_Init();
1039                 VID_Init();
1040                 Render_Init();
1041                 S_Init();
1042                 CDAudio_Init();
1043                 Key_Init();
1044                 V_Init();
1045                 CL_Init();
1046         }
1047
1048         // set up the default startmap_sp and startmap_dm aliases (mods can
1049         // override these) and then execute the quake.rc startup script
1050         if (gamemode == GAME_NEHAHRA)
1051                 Cbuf_AddText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec quake.rc\n");
1052         else if (gamemode == GAME_TRANSFUSION)
1053                 Cbuf_AddText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec quake.rc\n");
1054         else if (gamemode == GAME_TEU)
1055                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
1056         else
1057                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec quake.rc\n");
1058         Cbuf_Execute();
1059
1060         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
1061         if (!host_stuffcmdsrun)
1062         {
1063                 Cbuf_AddText("exec default.cfg\nexec config.cfg\nexec autoexec.cfg\nstuffcmds\n");
1064                 Cbuf_Execute();
1065         }
1066
1067         // put up the loading image so the user doesn't stare at a black screen...
1068         SCR_BeginLoadingPlaque();
1069
1070         // FIXME: put this into some neat design, but the menu should be allowed to crash
1071         // without crashing the whole game, so this should just be a short-time solution
1072
1073         // here comes the not so critical stuff
1074         if (setjmp(host_abortframe)) {
1075                 return;
1076         }
1077
1078         if (cls.state != ca_dedicated)
1079         {
1080                 MR_Init();
1081         }
1082
1083         // check for special benchmark mode
1084 // 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)
1085         i = COM_CheckParm("-benchmark");
1086         if (i && i + 1 < com_argc)
1087         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1088         {
1089                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
1090                 Cbuf_Execute();
1091         }
1092
1093         // check for special demo mode
1094 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1095         i = COM_CheckParm("-demo");
1096         if (i && i + 1 < com_argc)
1097         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1098         {
1099                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1100                 Cbuf_Execute();
1101         }
1102
1103 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
1104         i = COM_CheckParm("-capturedemo");
1105         if (i && i + 1 < com_argc)
1106         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1107         {
1108                 Cbuf_AddText(va("playdemo %s\ncl_capturevideo 1\n", com_argv[i + 1]));
1109                 Cbuf_Execute();
1110         }
1111
1112         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1113         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1114         {
1115                 Cbuf_AddText("startmap_dm\n");
1116                 Cbuf_Execute();
1117         }
1118
1119         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1120         {
1121                 Cbuf_AddText("togglemenu\n");
1122                 Cbuf_Execute();
1123         }
1124
1125         Con_DPrint("========Initialized=========\n");
1126
1127         //Host_StartVideo();
1128 }
1129
1130
1131 /*
1132 ===============
1133 Host_Shutdown
1134
1135 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1136 to run quit through here before the final handoff to the sys code.
1137 ===============
1138 */
1139 void Host_Shutdown(void)
1140 {
1141         static qboolean isdown = false;
1142
1143         if (isdown)
1144         {
1145                 Con_Print("recursive shutdown\n");
1146                 return;
1147         }
1148         if (setjmp(host_abortframe))
1149         {
1150                 Con_Print("aborted the quitting frame?!?\n");
1151                 return;
1152         }
1153         isdown = true;
1154
1155         // be quiet while shutting down
1156         S_StopAllSounds();
1157
1158         // disconnect client from server if active
1159         CL_Disconnect();
1160
1161         // shut down local server if active
1162         Host_ShutdownServer ();
1163
1164         // Shutdown menu
1165         if(MR_Shutdown)
1166                 MR_Shutdown();
1167
1168         // AK shutdown PRVM
1169         // AK hmm, no PRVM_Shutdown(); yet
1170
1171         CL_Gecko_Shutdown();
1172         CL_Video_Shutdown();
1173
1174         Host_SaveConfig();
1175
1176         CDAudio_Shutdown ();
1177         S_Terminate ();
1178         Curl_Shutdown ();
1179         NetConn_Shutdown ();
1180         //PR_Shutdown ();
1181
1182         if (cls.state != ca_dedicated)
1183         {
1184                 R_Modules_Shutdown();
1185                 VID_Shutdown();
1186         }
1187
1188         Cmd_Shutdown();
1189         CL_Shutdown();
1190         Sys_Shutdown();
1191         Log_Close();
1192         FS_Shutdown();
1193         Memory_Shutdown();
1194 }
1195