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_fade = {CVAR_SAVE, "cl_minfps_fade", "0.2", "how fast the quality adapts to varying framerate"};
  64 cvar_t cl_minfps_qualitymax = {CVAR_SAVE, "cl_minfps_qualitymax", "1", "highest allowed drawdistance multiplier"};
  65 cvar_t cl_minfps_qualitymin = {CVAR_SAVE, "cl_minfps_qualitymin", "0.25", "lowest allowed drawdistance multiplier"};
  66 cvar_t cl_minfps_qualitypower = {CVAR_SAVE, "cl_minfps_qualitypower", "4", "raises quality value to a power of itself, higher values make quality drop more sharply in relation to framerate"};
  67 cvar_t cl_minfps_qualityscale = {CVAR_SAVE, "cl_minfps_qualityscale", "0.5", "multiplier for quality"};
  68 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)"};
  69 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"};
  70
  71 cvar_t developer = {0, "developer","0", "prints additional debugging messages and information (recommended for modders and level designers)"};
  72 cvar_t developer_loadfile = {0, "developer_loadfile","0", "prints name and size of every file loaded via the FS_LoadFile function (which is almost everything)"};
  73 cvar_t developer_loading = {0, "developer_loading","0", "prints information about files as they are loaded or unloaded successfully"};
  74 cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
  75
  76 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
  77 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
  78
  79 /*
  80 ================
  81 Host_AbortCurrentFrame
  82
  83 aborts the current host frame and goes on with the next one
  84 ================
  85 */
  86 void Host_AbortCurrentFrame(void)
  87 {
  88         longjmp (host_abortframe, 1);
  89 }
  90
  91 /*
  92 ================
  93 Host_Error
  94
  95 This shuts down both the client and server
  96 ================
  97 */
  98 void Host_Error (const char *error, ...)
  99 {
 100         static char hosterrorstring1[MAX_INPUTLINE];
 101         static char hosterrorstring2[MAX_INPUTLINE];
 102         static qboolean hosterror = false;
 103         va_list argptr;
 104
 105         // turn off rcon redirect if it was active when the crash occurred
 106         rcon_redirect = false;
 107
 108         va_start (argptr,error);
 109         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
 110         va_end (argptr);
 111
 112         Con_Printf("Host_Error: %s\n", hosterrorstring1);
 113
 114         // LordHavoc: if crashing very early, or currently shutting down, do
 115         // Sys_Error instead
 116         if (host_framecount < 3 || host_shuttingdown)
 117                 Sys_Error ("Host_Error: %s", hosterrorstring1);
 118
 119         if (hosterror)
 120                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
 121         hosterror = true;
 122
 123         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
 124
 125         CL_Parse_DumpPacket();
 126
 127         CL_Parse_ErrorCleanUp();
 128
 129         //PR_Crash();
 130
 131         // print out where the crash happened, if it was caused by QC (and do a cleanup)
 132         PRVM_Crash();
 133
 134
 135         Host_ShutdownServer ();
 136
 137         if (cls.state == ca_dedicated)
 138                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
 139
 140         CL_Disconnect ();
 141         cls.demonum = -1;
 142
 143         hosterror = false;
 144
 145         Host_AbortCurrentFrame();
 146 }
 147
 148 void Host_ServerOptions (void)
 149 {
 150         int i;
 151
 152         // general default
 153         svs.maxclients = 8;
 154
 155 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
 156 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
 157         // if no client is in the executable or -dedicated is specified on
 158         // commandline, start a dedicated server
 159         i = COM_CheckParm ("-dedicated");
 160         if (i || !cl_available)
 161         {
 162                 cls.state = ca_dedicated;
 163                 // check for -dedicated specifying how many players
 164                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 165                         svs.maxclients = atoi (com_argv[i+1]);
 166                 if (COM_CheckParm ("-listen"))
 167                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
 168                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
 169                 Cvar_SetValue("sv_public", 1);
 170         }
 171         else if (cl_available)
 172         {
 173                 // client exists and not dedicated, check if -listen is specified
 174                 cls.state = ca_disconnected;
 175                 i = COM_CheckParm ("-listen");
 176                 if (i)
 177                 {
 178                         // default players unless specified
 179                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 180                                 svs.maxclients = atoi (com_argv[i+1]);
 181                 }
 182                 else
 183                 {
 184                         // default players in some games, singleplayer in most
 185                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_BATTLEMECH)
 186                                 svs.maxclients = 1;
 187                 }
 188         }
 189
 190         svs.maxclients = bound(1, svs.maxclients, MAX_SCOREBOARD);
 191
 192         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
 193
 194         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
 195                 Cvar_SetValueQuick(&deathmatch, 1);
 196 }
 197
 198 /*
 199 =======================
 200 Host_InitLocal
 201 ======================
 202 */
 203 void Host_SaveConfig_f(void);
 204 void Host_LoadConfig_f(void);
 205 static void Host_InitLocal (void)
 206 {
 207         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg (or a specified filename) immediately (also automatic when quitting)");
 208         Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
 209
 210         Cvar_RegisterVariable (&host_framerate);
 211         Cvar_RegisterVariable (&host_speeds);
 212         Cvar_RegisterVariable (&cl_minfps);
 213         Cvar_RegisterVariable (&cl_minfps_fade);
 214         Cvar_RegisterVariable (&cl_minfps_qualitymax);
 215         Cvar_RegisterVariable (&cl_minfps_qualitymin);
 216         Cvar_RegisterVariable (&cl_minfps_qualitypower);
 217         Cvar_RegisterVariable (&cl_minfps_qualityscale);
 218         Cvar_RegisterVariable (&cl_maxfps);
 219         Cvar_RegisterVariable (&cl_maxidlefps);
 220
 221         Cvar_RegisterVariable (&developer);
 222         Cvar_RegisterVariable (&developer_loadfile);
 223         Cvar_RegisterVariable (&developer_loading);
 224         Cvar_RegisterVariable (&developer_entityparsing);
 225
 226         Cvar_RegisterVariable (&timestamps);
 227         Cvar_RegisterVariable (&timeformat);
 228 }
 229
 230
 231 /*
 232 ===============
 233 Host_SaveConfig_f
 234
 235 Writes key bindings and archived cvars to config.cfg
 236 ===============
 237 */
 238 void Host_SaveConfig_to(const char *file)
 239 {
 240         qfile_t *f;
 241
 242 // dedicated servers initialize the host but don't parse and set the
 243 // config.cfg cvars
 244         // LordHavoc: don't save a config if it crashed in startup
 245         if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))
 246         {
 247                 f = FS_Open (file, "wb", false, false);
 248                 if (!f)
 249                 {
 250                         Con_Printf("Couldn't write %s.\n", file);
 251                         return;
 252                 }
 253
 254                 Key_WriteBindings (f);
 255                 Cvar_WriteVariables (f);
 256
 257                 FS_Close (f);
 258         }
 259 }
 260 void Host_SaveConfig(void)
 261 {
 262         Host_SaveConfig_to("config.cfg");
 263 }
 264 void Host_SaveConfig_f(void)
 265 {
 266         const char *file = "config.cfg";
 267
 268         if(Cmd_Argc() >= 2) {
 269                 file = Cmd_Argv(1);
 270                 Con_Printf("Saving to %s\n", file);
 271         }
 272
 273         Host_SaveConfig_to(file);
 274 }
 275
 276 /*
 277 ===============
 278 Host_LoadConfig_f
 279
 280 Resets key bindings and cvars to defaults and then reloads scripts
 281 ===============
 282 */
 283 void Host_LoadConfig_f(void)
 284 {
 285         // unlock the cvar default strings so they can be updated by the new default.cfg
 286         Cvar_UnlockDefaults();
 287         // reset cvars to their defaults, and then exec startup scripts again
 288         Cbuf_InsertText("cvar_resettodefaults_all;exec quake.rc\n");
 289 }
 290
 291 /*
 292 =================
 293 SV_ClientPrint
 294
 295 Sends text across to be displayed
 296 FIXME: make this just a stuffed echo?
 297 =================
 298 */
 299 void SV_ClientPrint(const char *msg)
 300 {
 301         if (host_client->netconnection)
 302         {
 303                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
 304                 MSG_WriteString(&host_client->netconnection->message, msg);
 305         }
 306 }
 307
 308 /*
 309 =================
 310 SV_ClientPrintf
 311
 312 Sends text across to be displayed
 313 FIXME: make this just a stuffed echo?
 314 =================
 315 */
 316 void SV_ClientPrintf(const char *fmt, ...)
 317 {
 318         va_list argptr;
 319         char msg[MAX_INPUTLINE];
 320
 321         va_start(argptr,fmt);
 322         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 323         va_end(argptr);
 324
 325         SV_ClientPrint(msg);
 326 }
 327
 328 /*
 329 =================
 330 SV_BroadcastPrint
 331
 332 Sends text to all active clients
 333 =================
 334 */
 335 void SV_BroadcastPrint(const char *msg)
 336 {
 337         int i;
 338         client_t *client;
 339
 340         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
 341         {
 342                 if (client->active && client->netconnection)
 343                 {
 344                         MSG_WriteByte(&client->netconnection->message, svc_print);
 345                         MSG_WriteString(&client->netconnection->message, msg);
 346                 }
 347         }
 348
 349         if (sv_echobprint.integer && cls.state == ca_dedicated)
 350                 Con_Print(msg);
 351 }
 352
 353 /*
 354 =================
 355 SV_BroadcastPrintf
 356
 357 Sends text to all active clients
 358 =================
 359 */
 360 void SV_BroadcastPrintf(const char *fmt, ...)
 361 {
 362         va_list argptr;
 363         char msg[MAX_INPUTLINE];
 364
 365         va_start(argptr,fmt);
 366         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 367         va_end(argptr);
 368
 369         SV_BroadcastPrint(msg);
 370 }
 371
 372 /*
 373 =================
 374 Host_ClientCommands
 375
 376 Send text over to the client to be executed
 377 =================
 378 */
 379 void Host_ClientCommands(const char *fmt, ...)
 380 {
 381         va_list argptr;
 382         char string[MAX_INPUTLINE];
 383
 384         if (!host_client->netconnection)
 385                 return;
 386
 387         va_start(argptr,fmt);
 388         dpvsnprintf(string, sizeof(string), fmt, argptr);
 389         va_end(argptr);
 390
 391         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
 392         MSG_WriteString(&host_client->netconnection->message, string);
 393 }
 394
 395 /*
 396 =====================
 397 SV_DropClient
 398
 399 Called when the player is getting totally kicked off the host
 400 if (crash = true), don't bother sending signofs
 401 =====================
 402 */
 403 void SV_DropClient(qboolean crash)
 404 {
 405         int i;
 406         Con_Printf("Client \"%s\" dropped\n", host_client->name);
 407
 408         SV_StopDemoRecording(host_client);
 409
 410         // make sure edict is not corrupt (from a level change for example)
 411         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
 412
 413         if (host_client->netconnection)
 414         {
 415                 // free the client (the body stays around)
 416                 if (!crash)
 417                 {
 418                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
 419                         unsigned char bufdata[8];
 420                         sizebuf_t buf;
 421                         memset(&buf, 0, sizeof(buf));
 422                         buf.data = bufdata;
 423                         buf.maxsize = sizeof(bufdata);
 424                         MSG_WriteByte(&buf, svc_disconnect);
 425                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 426                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 427                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 428                 }
 429                 // break the net connection
 430                 NetConn_Close(host_client->netconnection);
 431                 host_client->netconnection = NULL;
 432         }
 433
 434         // call qc ClientDisconnect function
 435         // LordHavoc: don't call QC if server is dead (avoids recursive
 436         // Host_Error in some mods when they run out of edicts)
 437         if (host_client->clientconnectcalled && sv.active && host_client->edict)
 438         {
 439                 // call the prog function for removing a client
 440                 // this will set the body to a dead frame, among other things
 441                 int saveSelf = prog->globals.server->self;
 442                 host_client->clientconnectcalled = false;
 443                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
 444                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
 445                 prog->globals.server->self = saveSelf;
 446         }
 447
 448         // if a download is active, close it
 449         if (host_client->download_file)
 450         {
 451                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
 452                 FS_Close(host_client->download_file);
 453                 host_client->download_file = NULL;
 454                 host_client->download_name[0] = 0;
 455                 host_client->download_expectedposition = 0;
 456                 host_client->download_started = false;
 457         }
 458
 459         // remove leaving player from scoreboard
 460         host_client->name[0] = 0;
 461         host_client->colors = 0;
 462         host_client->frags = 0;
 463         // send notification to all clients
 464         // get number of client manually just to make sure we get it right...
 465         i = host_client - svs.clients;
 466         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
 467         MSG_WriteByte (&sv.reliable_datagram, i);
 468         MSG_WriteString (&sv.reliable_datagram, host_client->name);
 469         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
 470         MSG_WriteByte (&sv.reliable_datagram, i);
 471         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
 472         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
 473         MSG_WriteByte (&sv.reliable_datagram, i);
 474         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
 475
 476         // free the client now
 477         if (host_client->entitydatabase)
 478                 EntityFrame_FreeDatabase(host_client->entitydatabase);
 479         if (host_client->entitydatabase4)
 480                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
 481         if (host_client->entitydatabase5)
 482                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
 483
 484         if (sv.active)
 485         {
 486                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
 487                 PRVM_ED_ClearEdict(host_client->edict);
 488         }
 489
 490         // clear the client struct (this sets active to false)
 491         memset(host_client, 0, sizeof(*host_client));
 492
 493         // update server listing on the master because player count changed
 494         // (which the master uses for filtering empty/full servers)
 495         NetConn_Heartbeat(1);
 496
 497         if (sv.loadgame)
 498         {
 499                 for (i = 0;i < svs.maxclients;i++)
 500                         if (svs.clients[i].active && !svs.clients[i].spawned)
 501                                 break;
 502                 if (i == svs.maxclients)
 503                 {
 504                         Con_Printf("Loaded game, everyone rejoined - unpausing\n");
 505                         sv.paused = sv.loadgame = false; // we're basically done with loading now
 506                 }
 507         }
 508 }
 509
 510 /*
 511 ==================
 512 Host_ShutdownServer
 513
 514 This only happens at the end of a game, not between levels
 515 ==================
 516 */
 517 void Host_ShutdownServer(void)
 518 {
 519         int i;
 520
 521         Con_DPrintf("Host_ShutdownServer\n");
 522
 523         if (!sv.active)
 524                 return;
 525
 526         NetConn_Heartbeat(2);
 527         NetConn_Heartbeat(2);
 528
 529 // make sure all the clients know we're disconnecting
 530         SV_VM_Begin();
 531         if(prog->loaded)
 532                 if(prog->funcoffsets.SV_Shutdown)
 533                 {
 534                         func_t s = prog->funcoffsets.SV_Shutdown;
 535                         prog->funcoffsets.SV_Shutdown = 0; // prevent it from getting called again
 536                         PRVM_ExecuteProgram(s,"SV_Shutdown() required");
 537                 }
 538         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 539                 if (host_client->active)
 540                         SV_DropClient(false); // server shutdown
 541         SV_VM_End();
 542
 543         NetConn_CloseServerPorts();
 544
 545         sv.active = false;
 546 //
 547 // clear structures
 548 //
 549         memset(&sv, 0, sizeof(sv));
 550         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
 551 }
 552
 553
 554 //============================================================================
 555
 556 /*
 557 ===================
 558 Host_GetConsoleCommands
 559
 560 Add them exactly as if they had been typed at the console
 561 ===================
 562 */
 563 void Host_GetConsoleCommands (void)
 564 {
 565         char *cmd;
 566
 567         while (1)
 568         {
 569                 cmd = Sys_ConsoleInput ();
 570                 if (!cmd)
 571                         break;
 572                 Cbuf_AddText (cmd);
 573         }
 574 }
 575
 576 /*
 577 ==================
 578 Host_TimeReport
 579
 580 Returns a time report string, for example for
 581 ==================
 582 */
 583 const char *Host_TimingReport()
 584 {
 585         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);
 586 }
 587
 588 /*
 589 ==================
 590 Host_Frame
 591
 592 Runs all active servers
 593 ==================
 594 */
 595 static void Host_Init(void);
 596 void Host_Main(void)
 597 {
 598         double time1 = 0;
 599         double time2 = 0;
 600         double time3 = 0;
 601         double cl_timer, sv_timer;
 602         double clframetime, deltarealtime, oldrealtime;
 603         double wait;
 604         int pass1, pass2, pass3, i;
 605
 606         Host_Init();
 607
 608         cl_timer = 0;
 609         sv_timer = 0;
 610
 611         realtime = Sys_DoubleTime();
 612         for (;;)
 613         {
 614                 if (setjmp(host_abortframe))
 615                         continue;                       // something bad happened, or the server disconnected
 616
 617                 oldrealtime = realtime;
 618                 realtime = Sys_DoubleTime();
 619
 620                 deltarealtime = realtime - oldrealtime;
 621                 cl_timer += deltarealtime;
 622                 sv_timer += deltarealtime;
 623
 624                 svs.perf_acc_realtime += deltarealtime;
 625
 626                 // Look for clients who have spawned
 627                 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 628                         if(host_client->spawned)
 629                                 if(host_client->netconnection)
 630                                         break;
 631                 if(i == svs.maxclients)
 632                 {
 633                         // Nobody is looking? Then we won't do timing...
 634                         // Instead, reset it to zero
 635                         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;
 636                 }
 637                 else if(svs.perf_acc_realtime > 5)
 638                 {
 639                         svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
 640                         svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
 641                         if(svs.perf_acc_offset_samples > 0)
 642                         {
 643                                 svs.perf_offset_max = svs.perf_acc_offset_max;
 644                                 svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
 645                                 svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
 646                         }
 647                         if(svs.perf_lost > 0)
 648                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport());
 649                         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;
 650                 }
 651
 652                 if (slowmo.value < 0.00001 && slowmo.value != 0)
 653                         Cvar_SetValue("slowmo", 0);
 654                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
 655                         Cvar_SetValue("host_framerate", 0);
 656
 657                 // keep the random time dependent, but not when playing demos/benchmarking
 658                 if(!*sv_random_seed.string && !cls.demoplayback)
 659                         rand();
 660
 661                 cl.islocalgame = NetConn_IsLocalGame();
 662
 663                 // begin gathering mouse input
 664                 in_mouse_x = in_mouse_y = 0;
 665
 666                 // get new key events
 667                 Sys_SendKeyEvents();
 668
 669                 NetConn_UpdateSockets();
 670
 671                 Log_DestBuffer_Flush();
 672
 673                 // receive packets on each main loop iteration, as the main loop may
 674                 // be undersleeping due to select() detecting a new packet
 675                 if (sv.active)
 676                         NetConn_ServerFrame();
 677
 678                 Curl_Run();
 679
 680                 // check for commands typed to the host
 681                 Host_GetConsoleCommands();
 682
 683                 // when a server is running we only execute console commands on server frames
 684                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
 685                 // otherwise we execute them on client frames
 686                 if (sv.active ? sv_timer > 0 : cl_timer > 0)
 687                 {
 688                         // process console commands
 689                         Cbuf_Execute();
 690                 }
 691
 692                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
 693
 694                 // if the accumulators haven't become positive yet, wait a while
 695                 if (cls.state == ca_dedicated)
 696                         wait = sv_timer * -1000000.0;
 697                 else if (!sv.active)
 698                         wait = cl_timer * -1000000.0;
 699                 else
 700                         wait = max(cl_timer, sv_timer) * -1000000.0;
 701                 wait = bound(0, wait, 100000);
 702
 703                 if (!cls.timedemo && wait >= 1)
 704                 {
 705                         double time0 = Sys_DoubleTime();
 706                         if (sv_checkforpacketsduringsleep.integer)
 707                                 NetConn_SleepMicroseconds((int)wait);
 708                         else
 709                                 Sys_Sleep((int)wait);
 710                         svs.perf_acc_sleeptime += Sys_DoubleTime() - time0;
 711                         continue;
 712                 }
 713
 714         //-------------------
 715         //
 716         // server operations
 717         //
 718         //-------------------
 719
 720                 // limit the frametime steps to no more than 100ms each
 721                 if (cl_timer > 0.1)
 722                         cl_timer = 0.1;
 723                 if (sv_timer > 0.1)
 724                 {
 725                         svs.perf_acc_lost += (sv_timer - 0.1);
 726                         sv_timer = 0.1;
 727                 }
 728
 729                 if (sv.active && sv_timer > 0)
 730                 {
 731                         // execute one or more server frames, with an upper limit on how much
 732                         // execution time to spend on server frames to avoid freezing the game if
 733                         // the server is overloaded, this execution time limit means the game will
 734                         // slow down if the server is taking too long.
 735                         int framecount, framelimit = 1;
 736                         double advancetime, aborttime = 0;
 737                         float offset;
 738
 739                         // run the world state
 740                         // don't allow simulation to run too fast or too slow or logic glitches can occur
 741
 742                         // stop running server frames if the wall time reaches this value
 743                         if (sys_ticrate.value <= 0)
 744                                 advancetime = sv_timer;
 745                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
 746                         {
 747                                 // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
 748                                 advancetime = bound(0.01, cl_timer, sys_ticrate.value);
 749                                 framelimit = 10;
 750                                 aborttime = realtime + 0.1;
 751                         }
 752                         else
 753                         {
 754                                 advancetime = sys_ticrate.value;
 755                                 // listen servers can run multiple server frames per client frame
 756                                 if (cls.state == ca_connected)
 757                                 {
 758                                         framelimit = 10;
 759                                         aborttime = realtime + 0.1;
 760                                 }
 761                         }
 762                         advancetime = min(advancetime, 0.1);
 763
 764                         if(advancetime > 0)
 765                         {
 766                                 offset = sv_timer + (Sys_DoubleTime() - realtime);
 767                                 ++svs.perf_acc_offset_samples;
 768                                 svs.perf_acc_offset += offset;
 769                                 svs.perf_acc_offset_squared += offset * offset;
 770                                 if(svs.perf_acc_offset_max < offset)
 771                                         svs.perf_acc_offset_max = offset;
 772                         }
 773
 774                         // only advance time if not paused
 775                         // the game also pauses in singleplayer when menu or console is used
 776                         sv.frametime = advancetime * slowmo.value;
 777                         if (host_framerate.value)
 778                                 sv.frametime = host_framerate.value;
 779                         if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
 780                                 sv.frametime = 0;
 781
 782                         // setup the VM frame
 783                         SV_VM_Begin();
 784
 785                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
 786                         {
 787                                 sv_timer -= advancetime;
 788
 789                                 // move things around and think unless paused
 790                                 if (sv.frametime)
 791                                         SV_Physics();
 792
 793                                 // if this server frame took too long, break out of the loop
 794                                 if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
 795                                         break;
 796                         }
 797
 798                         // send all messages to the clients
 799                         SV_SendClientMessages();
 800
 801                         // end the server VM frame
 802                         SV_VM_End();
 803
 804                         // send an heartbeat if enough time has passed since the last one
 805                         NetConn_Heartbeat(0);
 806                 }
 807
 808         //-------------------
 809         //
 810         // client operations
 811         //
 812         //-------------------
 813
 814                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo))
 815                 {
 816                         // decide the simulation time
 817                         if (cls.capturevideo.active)
 818                         {
 819                                 if (cls.capturevideo.realtime)
 820                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
 821                                 else
 822                                 {
 823                                         clframetime = 1.0 / cls.capturevideo.framerate;
 824                                         cl.realframetime = max(cl_timer, clframetime);
 825                                 }
 826                         }
 827                         else if (vid_activewindow)
 828                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxfps.value));
 829                         else
 830                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxidlefps.value));
 831
 832                         // apply slowmo scaling
 833                         clframetime *= cl.movevars_timescale;
 834                         // scale playback speed of demos by slowmo cvar
 835                         if (cls.demoplayback)
 836                         {
 837                                 clframetime *= slowmo.value;
 838                                 // if demo playback is paused, don't advance time at all
 839                                 if (cls.demopaused)
 840                                         clframetime = 0;
 841                         }
 842
 843                         // host_framerate overrides all else
 844                         if (host_framerate.value)
 845                                 clframetime = host_framerate.value;
 846
 847                         if (cls.timedemo)
 848                                 clframetime = cl.realframetime = cl_timer;
 849
 850                         // deduct the frame time from the accumulator
 851                         cl_timer -= cl.realframetime;
 852
 853                         cl.oldtime = cl.time;
 854                         cl.time += clframetime;
 855
 856                         // Collect input into cmd
 857                         CL_Input();
 858
 859                         // check for new packets
 860                         NetConn_ClientFrame();
 861
 862                         // read a new frame from a demo if needed
 863                         CL_ReadDemoMessage();
 864
 865                         // now that packets have been read, send input to server
 866                         CL_SendMove();
 867
 868                         // update client world (interpolate entities, create trails, etc)
 869                         CL_UpdateWorld();
 870
 871                         // update video
 872                         if (host_speeds.integer)
 873                                 time1 = Sys_DoubleTime();
 874
 875                         CL_Video_Frame();
 876                         CL_Gecko_Frame();
 877
 878                         CL_UpdateScreen();
 879
 880                         if (host_speeds.integer)
 881                                 time2 = Sys_DoubleTime();
 882
 883                         // update audio
 884                         if(cl.csqc_usecsqclistener)
 885                         {
 886                                 S_Update(&cl.csqc_listenermatrix);
 887                                 cl.csqc_usecsqclistener = false;
 888                         }
 889                         else
 890                                 S_Update(&r_refdef.view.matrix);
 891
 892                         CDAudio_Update();
 893
 894                         if (host_speeds.integer)
 895                         {
 896                                 pass1 = (int)((time1 - time3)*1000000);
 897                                 time3 = Sys_DoubleTime();
 898                                 pass2 = (int)((time2 - time1)*1000000);
 899                                 pass3 = (int)((time3 - time2)*1000000);
 900                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
 901                                                         pass1+pass2+pass3, pass1, pass2, pass3);
 902                         }
 903                 }
 904
 905                 // if there is some time remaining from this frame, reset the timers
 906                 if (cl_timer >= 0)
 907                         cl_timer = 0;
 908                 if (sv_timer >= 0)
 909                 {
 910                         svs.perf_acc_lost += sv_timer;
 911                         sv_timer = 0;
 912                 }
 913
 914                 host_framecount++;
 915         }
 916 }
 917
 918 //============================================================================
 919
 920 qboolean vid_opened = false;
 921 void Host_StartVideo(void)
 922 {
 923         if (!vid_opened && cls.state != ca_dedicated)
 924         {
 925                 vid_opened = true;
 926                 VID_Start();
 927                 CDAudio_Startup();
 928         }
 929 }
 930
 931 char engineversion[128];
 932
 933 qboolean sys_nostdout = false;
 934
 935 extern void Render_Init(void);
 936 extern void Mathlib_Init(void);
 937 extern void FS_Init(void);
 938 extern void FS_Shutdown(void);
 939 extern void PR_Cmd_Init(void);
 940 extern void COM_Init_Commands(void);
 941 extern void FS_Init_Commands(void);
 942 extern qboolean host_stuffcmdsrun;
 943
 944 /*
 945 ====================
 946 Host_Init
 947 ====================
 948 */
 949 static void Host_Init (void)
 950 {
 951         int i;
 952         const char* os;
 953
 954         if (COM_CheckParm("-profilegameonly"))
 955                 Sys_AllowProfiling(false);
 956
 957         // LordHavoc: quake never seeded the random number generator before... heh
 958         if (COM_CheckParm("-benchmark"))
 959                 srand(0); // predictable random sequence for -benchmark
 960         else
 961                 srand(time(NULL));
 962
 963         // FIXME: this is evil, but possibly temporary
 964 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
 965         if (COM_CheckParm("-developer"))
 966         {
 967                 developer.value = developer.integer = 1;
 968                 developer.string = "1";
 969         }
 970
 971         if (COM_CheckParm("-developer2"))
 972         {
 973                 developer.value = developer.integer = 100;
 974                 developer.string = "100";
 975                 developer_memory.value = developer_memory.integer = 100;
 976                 developer.string = "100";
 977                 developer_memorydebug.value = developer_memorydebug.integer = 100;
 978                 developer_memorydebug.string = "100";
 979         }
 980
 981 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
 982         if (COM_CheckParm("-nostdout"))
 983                 sys_nostdout = 1;
 984
 985         // used by everything
 986         Memory_Init();
 987
 988         // initialize console command/cvar/alias/command execution systems
 989         Cmd_Init();
 990
 991         // initialize memory subsystem cvars/commands
 992         Memory_Init_Commands();
 993
 994         // initialize console and logging and its cvars/commands
 995         Con_Init();
 996
 997         // initialize various cvars that could not be initialized earlier
 998         Curl_Init_Commands();
 999         Cmd_Init_Commands();
1000         Sys_Init_Commands();
1001         COM_Init_Commands();
1002         FS_Init_Commands();
1003
1004         // initialize console window (only used by sys_win.c)
1005         Sys_InitConsole();
1006
1007         // detect gamemode from commandline options or executable name
1008         COM_InitGameType();
1009
1010         // construct a version string for the corner of the console
1011         os = DP_OS_NAME;
1012         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
1013         Con_Printf("%s\n", engineversion);
1014
1015         // initialize ixtable
1016         Mathlib_Init();
1017
1018         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
1019         FS_Init();
1020
1021         NetConn_Init();
1022         Curl_Init();
1023         //PR_Init();
1024         //PR_Cmd_Init();
1025         PRVM_Init();
1026         Mod_Init();
1027         World_Init();
1028         SV_Init();
1029         Host_InitCommands();
1030         Host_InitLocal();
1031         Host_ServerOptions();
1032
1033         if (cls.state != ca_dedicated)
1034         {
1035                 Con_DPrintf("Initializing client\n");
1036
1037                 R_Modules_Init();
1038                 Palette_Init();
1039                 MR_Init_Commands();
1040                 VID_Shared_Init();
1041                 VID_Init();
1042                 Render_Init();
1043                 S_Init();
1044                 CDAudio_Init();
1045                 Key_Init();
1046                 V_Init();
1047                 CL_Init();
1048         }
1049
1050         // set up the default startmap_sp and startmap_dm aliases (mods can
1051         // override these) and then execute the quake.rc startup script
1052         if (gamemode == GAME_NEHAHRA)
1053                 Cbuf_AddText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec quake.rc\n");
1054         else if (gamemode == GAME_TRANSFUSION)
1055                 Cbuf_AddText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec quake.rc\n");
1056         else if (gamemode == GAME_TEU)
1057                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
1058         else
1059                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec quake.rc\n");
1060         Cbuf_Execute();
1061
1062         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
1063         if (!host_stuffcmdsrun)
1064         {
1065                 Cbuf_AddText("exec default.cfg\nexec config.cfg\nexec autoexec.cfg\nstuffcmds\n");
1066                 Cbuf_Execute();
1067         }
1068
1069         // put up the loading image so the user doesn't stare at a black screen...
1070         SCR_BeginLoadingPlaque();
1071
1072         // FIXME: put this into some neat design, but the menu should be allowed to crash
1073         // without crashing the whole game, so this should just be a short-time solution
1074
1075         // here comes the not so critical stuff
1076         if (setjmp(host_abortframe)) {
1077                 return;
1078         }
1079
1080         if (cls.state != ca_dedicated)
1081         {
1082                 MR_Init();
1083         }
1084
1085         // check for special benchmark mode
1086 // 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)
1087         i = COM_CheckParm("-benchmark");
1088         if (i && i + 1 < com_argc)
1089         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1090         {
1091                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
1092                 Cbuf_Execute();
1093         }
1094
1095         // check for special demo mode
1096 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1097         i = COM_CheckParm("-demo");
1098         if (i && i + 1 < com_argc)
1099         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1100         {
1101                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1102                 Cbuf_Execute();
1103         }
1104
1105 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
1106         i = COM_CheckParm("-capturedemo");
1107         if (i && i + 1 < com_argc)
1108         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1109         {
1110                 Cbuf_AddText(va("playdemo %s\ncl_capturevideo 1\n", com_argv[i + 1]));
1111                 Cbuf_Execute();
1112         }
1113
1114         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1115         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1116         {
1117                 Cbuf_AddText("startmap_dm\n");
1118                 Cbuf_Execute();
1119         }
1120
1121         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1122         {
1123                 Cbuf_AddText("togglemenu\n");
1124                 Cbuf_Execute();
1125         }
1126
1127         Con_DPrint("========Initialized=========\n");
1128
1129         //Host_StartVideo();
1130 }
1131
1132
1133 /*
1134 ===============
1135 Host_Shutdown
1136
1137 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1138 to run quit through here before the final handoff to the sys code.
1139 ===============
1140 */
1141 void Host_Shutdown(void)
1142 {
1143         static qboolean isdown = false;
1144
1145         if (isdown)
1146         {
1147                 Con_Print("recursive shutdown\n");
1148                 return;
1149         }
1150         if (setjmp(host_abortframe))
1151         {
1152                 Con_Print("aborted the quitting frame?!?\n");
1153                 return;
1154         }
1155         isdown = true;
1156
1157         // be quiet while shutting down
1158         S_StopAllSounds();
1159
1160         // disconnect client from server if active
1161         CL_Disconnect();
1162
1163         // shut down local server if active
1164         Host_ShutdownServer ();
1165
1166         // Shutdown menu
1167         if(MR_Shutdown)
1168                 MR_Shutdown();
1169
1170         // AK shutdown PRVM
1171         // AK hmm, no PRVM_Shutdown(); yet
1172
1173         CL_Gecko_Shutdown();
1174         CL_Video_Shutdown();
1175
1176         Host_SaveConfig();
1177
1178         CDAudio_Shutdown ();
1179         S_Terminate ();
1180         Curl_Shutdown ();
1181         NetConn_Shutdown ();
1182         //PR_Shutdown ();
1183
1184         if (cls.state != ca_dedicated)
1185         {
1186                 R_Modules_Shutdown();
1187                 VID_Shutdown();
1188         }
1189
1190         Cmd_Shutdown();
1191         CL_Shutdown();
1192         Sys_Shutdown();
1193         Log_Close();
1194         FS_Shutdown();
1195         Memory_Shutdown();
1196 }
1197