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 #include "snd_main.h"
  33
  34 /*
  35
  36 A server can always be started, even if the system started out as a client
  37 to a remote system.
  38
  39 A client can NOT be started if the system started as a dedicated server.
  40
  41 Memory is cleared / released when a server or client begins, not when they end.
  42
  43 */
  44
  45 // how many frames have occurred
  46 // (checked by Host_Error and Host_SaveConfig_f)
  47 int host_framecount = 0;
  48 // LordHavoc: set when quit is executed
  49 qboolean host_shuttingdown = false;
  50
  51 // the real time since application started, without any slowmo or clamping
  52 double realtime;
  53
  54 // current client
  55 client_t *host_client;
  56
  57 jmp_buf host_abortframe;
  58 double host_starttime = 0;
  59
  60 // pretend frames take this amount of time (in seconds), 0 = realtime
  61 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"};
  62 // shows time used by certain subsystems
  63 cvar_t host_speeds = {0, "host_speeds","0", "reports how much time is used in server/graphics/sound"};
  64 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"};
  65 cvar_t cl_minfps_fade = {CVAR_SAVE, "cl_minfps_fade", "0.2", "how fast the quality adapts to varying framerate"};
  66 cvar_t cl_minfps_qualitymax = {CVAR_SAVE, "cl_minfps_qualitymax", "1", "highest allowed drawdistance multiplier"};
  67 cvar_t cl_minfps_qualitymin = {CVAR_SAVE, "cl_minfps_qualitymin", "0.25", "lowest allowed drawdistance multiplier"};
  68 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"};
  69 cvar_t cl_minfps_qualityscale = {CVAR_SAVE, "cl_minfps_qualityscale", "0.5", "multiplier for quality"};
  70 cvar_t cl_maxfps = {CVAR_SAVE, "cl_maxfps", "0", "maximum fps cap, 0 = unlimited, if game is running faster than this it will wait before running another frame (useful to make cpu time available to other programs)"};
  71 cvar_t cl_maxfps_alwayssleep = {0, "cl_maxfps_alwayssleep","1", "gives up some processing time to other applications each frame, value in milliseconds, disabled if cl_maxfps is 0"};
  72 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"};
  73
  74 cvar_t developer = {CVAR_SAVE, "developer","0", "prints debugging messages and information (recommended for all developers and level designers)"};
  75 cvar_t developer_extra = {0, "developer_extra", "0", "prints additional debugging messages, often very verbose!"};
  76 cvar_t developer_insane = {0, "developer_insane", "0", "prints huge streams of information about internal workings, entire contents of files being read/written, etc.  Not recommended!"};
  77 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)"};
  78 cvar_t developer_loading = {0, "developer_loading","0", "prints information about files as they are loaded or unloaded successfully"};
  79 cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
  80
  81 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
  82 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
  83
  84 /*
  85 ================
  86 Host_AbortCurrentFrame
  87
  88 aborts the current host frame and goes on with the next one
  89 ================
  90 */
  91 void Host_AbortCurrentFrame(void)
  92 {
  93         longjmp (host_abortframe, 1);
  94 }
  95
  96 /*
  97 ================
  98 Host_Error
  99
 100 This shuts down both the client and server
 101 ================
 102 */
 103 void Host_Error (const char *error, ...)
 104 {
 105         static char hosterrorstring1[MAX_INPUTLINE];
 106         static char hosterrorstring2[MAX_INPUTLINE];
 107         static qboolean hosterror = false;
 108         va_list argptr;
 109
 110         // turn off rcon redirect if it was active when the crash occurred
 111         // to prevent loops when it is a networking problem
 112         Con_Rcon_Redirect_Abort();
 113
 114         va_start (argptr,error);
 115         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
 116         va_end (argptr);
 117
 118         Con_Printf("Host_Error: %s\n", hosterrorstring1);
 119
 120         // LordHavoc: if crashing very early, or currently shutting down, do
 121         // Sys_Error instead
 122         if (host_framecount < 3 || host_shuttingdown)
 123                 Sys_Error ("Host_Error: %s", hosterrorstring1);
 124
 125         if (hosterror)
 126                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
 127         hosterror = true;
 128
 129         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
 130
 131         CL_Parse_DumpPacket();
 132
 133         CL_Parse_ErrorCleanUp();
 134
 135         //PR_Crash();
 136
 137         // print out where the crash happened, if it was caused by QC (and do a cleanup)
 138         PRVM_Crash();
 139
 140
 141         Host_ShutdownServer ();
 142
 143         if (cls.state == ca_dedicated)
 144                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
 145
 146         CL_Disconnect ();
 147         cls.demonum = -1;
 148
 149         hosterror = false;
 150
 151         Host_AbortCurrentFrame();
 152 }
 153
 154 void Host_ServerOptions (void)
 155 {
 156         int i;
 157
 158         // general default
 159         svs.maxclients = 8;
 160
 161 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
 162 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
 163         // if no client is in the executable or -dedicated is specified on
 164         // commandline, start a dedicated server
 165         i = COM_CheckParm ("-dedicated");
 166         if (i || !cl_available)
 167         {
 168                 cls.state = ca_dedicated;
 169                 // check for -dedicated specifying how many players
 170                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 171                         svs.maxclients = atoi (com_argv[i+1]);
 172                 if (COM_CheckParm ("-listen"))
 173                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
 174                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
 175                 Cvar_SetValue("sv_public", 1);
 176         }
 177         else if (cl_available)
 178         {
 179                 // client exists and not dedicated, check if -listen is specified
 180                 cls.state = ca_disconnected;
 181                 i = COM_CheckParm ("-listen");
 182                 if (i)
 183                 {
 184                         // default players unless specified
 185                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 186                                 svs.maxclients = atoi (com_argv[i+1]);
 187                 }
 188                 else
 189                 {
 190                         // default players in some games, singleplayer in most
 191                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_BATTLEMECH)
 192                                 svs.maxclients = 1;
 193                 }
 194         }
 195
 196         svs.maxclients = svs.maxclients_next = bound(1, svs.maxclients, MAX_SCOREBOARD);
 197
 198         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
 199
 200         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
 201                 Cvar_SetValueQuick(&deathmatch, 1);
 202 }
 203
 204 /*
 205 =======================
 206 Host_InitLocal
 207 ======================
 208 */
 209 void Host_SaveConfig_f(void);
 210 void Host_LoadConfig_f(void);
 211 extern cvar_t sv_writepicture_quality;
 212 static void Host_InitLocal (void)
 213 {
 214         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg (or a specified filename) immediately (also automatic when quitting)");
 215         Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
 216
 217         Cvar_RegisterVariable (&host_framerate);
 218         Cvar_RegisterVariable (&host_speeds);
 219         Cvar_RegisterVariable (&cl_minfps);
 220         Cvar_RegisterVariable (&cl_minfps_fade);
 221         Cvar_RegisterVariable (&cl_minfps_qualitymax);
 222         Cvar_RegisterVariable (&cl_minfps_qualitymin);
 223         Cvar_RegisterVariable (&cl_minfps_qualitypower);
 224         Cvar_RegisterVariable (&cl_minfps_qualityscale);
 225         Cvar_RegisterVariable (&cl_maxfps);
 226         Cvar_RegisterVariable (&cl_maxfps_alwayssleep);
 227         Cvar_RegisterVariable (&cl_maxidlefps);
 228
 229         Cvar_RegisterVariable (&developer);
 230         Cvar_RegisterVariable (&developer_extra);
 231         Cvar_RegisterVariable (&developer_insane);
 232         Cvar_RegisterVariable (&developer_loadfile);
 233         Cvar_RegisterVariable (&developer_loading);
 234         Cvar_RegisterVariable (&developer_entityparsing);
 235
 236         Cvar_RegisterVariable (&timestamps);
 237         Cvar_RegisterVariable (&timeformat);
 238
 239         Cvar_RegisterVariable (&sv_writepicture_quality);
 240 }
 241
 242
 243 /*
 244 ===============
 245 Host_SaveConfig_f
 246
 247 Writes key bindings and archived cvars to config.cfg
 248 ===============
 249 */
 250 void Host_SaveConfig_to(const char *file)
 251 {
 252         qfile_t *f;
 253
 254 // dedicated servers initialize the host but don't parse and set the
 255 // config.cfg cvars
 256         // LordHavoc: don't save a config if it crashed in startup
 257         if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))
 258         {
 259                 f = FS_OpenRealFile(file, "wb", false);
 260                 if (!f)
 261                 {
 262                         Con_Printf("Couldn't write %s.\n", file);
 263                         return;
 264                 }
 265
 266                 Key_WriteBindings (f);
 267                 Cvar_WriteVariables (f);
 268
 269                 FS_Close (f);
 270         }
 271 }
 272 void Host_SaveConfig(void)
 273 {
 274         Host_SaveConfig_to("config.cfg");
 275 }
 276 void Host_SaveConfig_f(void)
 277 {
 278         const char *file = "config.cfg";
 279
 280         if(Cmd_Argc() >= 2) {
 281                 file = Cmd_Argv(1);
 282                 Con_Printf("Saving to %s\n", file);
 283         }
 284
 285         Host_SaveConfig_to(file);
 286 }
 287
 288 /*
 289 ===============
 290 Host_LoadConfig_f
 291
 292 Resets key bindings and cvars to defaults and then reloads scripts
 293 ===============
 294 */
 295 void Host_LoadConfig_f(void)
 296 {
 297         // unlock the cvar default strings so they can be updated by the new default.cfg
 298         Cvar_UnlockDefaults();
 299         // reset cvars to their defaults, and then exec startup scripts again
 300         Cbuf_InsertText("cvar_resettodefaults_all;exec quake.rc\n");
 301 }
 302
 303 /*
 304 =================
 305 SV_ClientPrint
 306
 307 Sends text across to be displayed
 308 FIXME: make this just a stuffed echo?
 309 =================
 310 */
 311 void SV_ClientPrint(const char *msg)
 312 {
 313         if (host_client->netconnection)
 314         {
 315                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
 316                 MSG_WriteString(&host_client->netconnection->message, msg);
 317         }
 318 }
 319
 320 /*
 321 =================
 322 SV_ClientPrintf
 323
 324 Sends text across to be displayed
 325 FIXME: make this just a stuffed echo?
 326 =================
 327 */
 328 void SV_ClientPrintf(const char *fmt, ...)
 329 {
 330         va_list argptr;
 331         char msg[MAX_INPUTLINE];
 332
 333         va_start(argptr,fmt);
 334         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 335         va_end(argptr);
 336
 337         SV_ClientPrint(msg);
 338 }
 339
 340 /*
 341 =================
 342 SV_BroadcastPrint
 343
 344 Sends text to all active clients
 345 =================
 346 */
 347 void SV_BroadcastPrint(const char *msg)
 348 {
 349         int i;
 350         client_t *client;
 351
 352         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
 353         {
 354                 if (client->active && client->netconnection)
 355                 {
 356                         MSG_WriteByte(&client->netconnection->message, svc_print);
 357                         MSG_WriteString(&client->netconnection->message, msg);
 358                 }
 359         }
 360
 361         if (sv_echobprint.integer && cls.state == ca_dedicated)
 362                 Con_Print(msg);
 363 }
 364
 365 /*
 366 =================
 367 SV_BroadcastPrintf
 368
 369 Sends text to all active clients
 370 =================
 371 */
 372 void SV_BroadcastPrintf(const char *fmt, ...)
 373 {
 374         va_list argptr;
 375         char msg[MAX_INPUTLINE];
 376
 377         va_start(argptr,fmt);
 378         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 379         va_end(argptr);
 380
 381         SV_BroadcastPrint(msg);
 382 }
 383
 384 /*
 385 =================
 386 Host_ClientCommands
 387
 388 Send text over to the client to be executed
 389 =================
 390 */
 391 void Host_ClientCommands(const char *fmt, ...)
 392 {
 393         va_list argptr;
 394         char string[MAX_INPUTLINE];
 395
 396         if (!host_client->netconnection)
 397                 return;
 398
 399         va_start(argptr,fmt);
 400         dpvsnprintf(string, sizeof(string), fmt, argptr);
 401         va_end(argptr);
 402
 403         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
 404         MSG_WriteString(&host_client->netconnection->message, string);
 405 }
 406
 407 /*
 408 =====================
 409 SV_DropClient
 410
 411 Called when the player is getting totally kicked off the host
 412 if (crash = true), don't bother sending signofs
 413 =====================
 414 */
 415 void SV_DropClient(qboolean crash)
 416 {
 417         int i;
 418         Con_Printf("Client \"%s\" dropped\n", host_client->name);
 419
 420         SV_StopDemoRecording(host_client);
 421
 422         // make sure edict is not corrupt (from a level change for example)
 423         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
 424
 425         if (host_client->netconnection)
 426         {
 427                 // free the client (the body stays around)
 428                 if (!crash)
 429                 {
 430                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
 431                         unsigned char bufdata[8];
 432                         sizebuf_t buf;
 433                         memset(&buf, 0, sizeof(buf));
 434                         buf.data = bufdata;
 435                         buf.maxsize = sizeof(bufdata);
 436                         MSG_WriteByte(&buf, svc_disconnect);
 437                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 438                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 439                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 440                 }
 441                 // break the net connection
 442                 NetConn_Close(host_client->netconnection);
 443                 host_client->netconnection = NULL;
 444         }
 445
 446         // call qc ClientDisconnect function
 447         // LordHavoc: don't call QC if server is dead (avoids recursive
 448         // Host_Error in some mods when they run out of edicts)
 449         if (host_client->clientconnectcalled && sv.active && host_client->edict)
 450         {
 451                 // call the prog function for removing a client
 452                 // this will set the body to a dead frame, among other things
 453                 int saveSelf = prog->globals.server->self;
 454                 host_client->clientconnectcalled = false;
 455                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
 456                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
 457                 prog->globals.server->self = saveSelf;
 458         }
 459
 460         // if a download is active, close it
 461         if (host_client->download_file)
 462         {
 463                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
 464                 FS_Close(host_client->download_file);
 465                 host_client->download_file = NULL;
 466                 host_client->download_name[0] = 0;
 467                 host_client->download_expectedposition = 0;
 468                 host_client->download_started = false;
 469         }
 470
 471         // remove leaving player from scoreboard
 472         host_client->name[0] = 0;
 473         host_client->colors = 0;
 474         host_client->frags = 0;
 475         // send notification to all clients
 476         // get number of client manually just to make sure we get it right...
 477         i = host_client - svs.clients;
 478         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
 479         MSG_WriteByte (&sv.reliable_datagram, i);
 480         MSG_WriteString (&sv.reliable_datagram, host_client->name);
 481         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
 482         MSG_WriteByte (&sv.reliable_datagram, i);
 483         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
 484         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
 485         MSG_WriteByte (&sv.reliable_datagram, i);
 486         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
 487
 488         // free the client now
 489         if (host_client->entitydatabase)
 490                 EntityFrame_FreeDatabase(host_client->entitydatabase);
 491         if (host_client->entitydatabase4)
 492                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
 493         if (host_client->entitydatabase5)
 494                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
 495
 496         if (sv.active)
 497         {
 498                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
 499                 PRVM_ED_ClearEdict(host_client->edict);
 500         }
 501
 502         // clear the client struct (this sets active to false)
 503         memset(host_client, 0, sizeof(*host_client));
 504
 505         // update server listing on the master because player count changed
 506         // (which the master uses for filtering empty/full servers)
 507         NetConn_Heartbeat(1);
 508
 509         if (sv.loadgame)
 510         {
 511                 for (i = 0;i < svs.maxclients;i++)
 512                         if (svs.clients[i].active && !svs.clients[i].spawned)
 513                                 break;
 514                 if (i == svs.maxclients)
 515                 {
 516                         Con_Printf("Loaded game, everyone rejoined - unpausing\n");
 517                         sv.paused = sv.loadgame = false; // we're basically done with loading now
 518                 }
 519         }
 520 }
 521
 522 /*
 523 ==================
 524 Host_ShutdownServer
 525
 526 This only happens at the end of a game, not between levels
 527 ==================
 528 */
 529 void Host_ShutdownServer(void)
 530 {
 531         int i;
 532
 533         Con_DPrintf("Host_ShutdownServer\n");
 534
 535         if (!sv.active)
 536                 return;
 537
 538         NetConn_Heartbeat(2);
 539         NetConn_Heartbeat(2);
 540
 541 // make sure all the clients know we're disconnecting
 542         SV_VM_Begin();
 543         World_End(&sv.world);
 544         if(prog->loaded)
 545                 if(prog->funcoffsets.SV_Shutdown)
 546                 {
 547                         func_t s = prog->funcoffsets.SV_Shutdown;
 548                         prog->funcoffsets.SV_Shutdown = 0; // prevent it from getting called again
 549                         PRVM_ExecuteProgram(s,"SV_Shutdown() required");
 550                 }
 551         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 552                 if (host_client->active)
 553                         SV_DropClient(false); // server shutdown
 554         SV_VM_End();
 555
 556         NetConn_CloseServerPorts();
 557
 558         sv.active = false;
 559 //
 560 // clear structures
 561 //
 562         memset(&sv, 0, sizeof(sv));
 563         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
 564 }
 565
 566
 567 //============================================================================
 568
 569 /*
 570 ===================
 571 Host_GetConsoleCommands
 572
 573 Add them exactly as if they had been typed at the console
 574 ===================
 575 */
 576 void Host_GetConsoleCommands (void)
 577 {
 578         char *cmd;
 579
 580         while (1)
 581         {
 582                 cmd = Sys_ConsoleInput ();
 583                 if (!cmd)
 584                         break;
 585                 Cbuf_AddText (cmd);
 586         }
 587 }
 588
 589 /*
 590 ==================
 591 Host_TimeReport
 592
 593 Returns a time report string, for example for
 594 ==================
 595 */
 596 const char *Host_TimingReport(void)
 597 {
 598         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);
 599 }
 600
 601 /*
 602 ==================
 603 Host_Frame
 604
 605 Runs all active servers
 606 ==================
 607 */
 608 static void Host_Init(void);
 609 void Host_Main(void)
 610 {
 611         double time1 = 0;
 612         double time2 = 0;
 613         double time3 = 0;
 614         double cl_timer, sv_timer;
 615         double clframetime, deltarealtime, oldrealtime;
 616         double wait;
 617         int pass1, pass2, pass3, i;
 618
 619         Host_Init();
 620
 621         cl_timer = 0;
 622         sv_timer = 0;
 623
 624         realtime = host_starttime = Sys_DoubleTime();
 625         for (;;)
 626         {
 627                 if (setjmp(host_abortframe))
 628                 {
 629                         SCR_ClearLoadingScreen(false);
 630                         continue;                       // something bad happened, or the server disconnected
 631                 }
 632
 633                 oldrealtime = realtime;
 634                 realtime = Sys_DoubleTime();
 635
 636                 deltarealtime = realtime - oldrealtime;
 637                 cl_timer += deltarealtime;
 638                 sv_timer += deltarealtime;
 639
 640                 svs.perf_acc_realtime += deltarealtime;
 641
 642                 // Look for clients who have spawned
 643                 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 644                         if(host_client->spawned)
 645                                 if(host_client->netconnection)
 646                                         break;
 647                 if(i == svs.maxclients)
 648                 {
 649                         // Nobody is looking? Then we won't do timing...
 650                         // Instead, reset it to zero
 651                         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;
 652                 }
 653                 else if(svs.perf_acc_realtime > 5)
 654                 {
 655                         svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
 656                         svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
 657                         if(svs.perf_acc_offset_samples > 0)
 658                         {
 659                                 svs.perf_offset_max = svs.perf_acc_offset_max;
 660                                 svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
 661                                 svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
 662                         }
 663                         if(svs.perf_lost > 0 && developer_extra.integer)
 664                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport());
 665                         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;
 666                 }
 667
 668                 if (slowmo.value < 0.00001 && slowmo.value != 0)
 669                         Cvar_SetValue("slowmo", 0);
 670                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
 671                         Cvar_SetValue("host_framerate", 0);
 672
 673                 // keep the random time dependent, but not when playing demos/benchmarking
 674                 if(!*sv_random_seed.string && !cls.demoplayback)
 675                         rand();
 676
 677                 cl.islocalgame = NetConn_IsLocalGame();
 678
 679                 // get new key events
 680                 SndSys_SendKeyEvents();
 681                 Sys_SendKeyEvents();
 682
 683                 NetConn_UpdateSockets();
 684
 685                 Log_DestBuffer_Flush();
 686
 687                 // receive packets on each main loop iteration, as the main loop may
 688                 // be undersleeping due to select() detecting a new packet
 689                 if (sv.active)
 690                         NetConn_ServerFrame();
 691
 692                 Curl_Run();
 693
 694                 // check for commands typed to the host
 695                 Host_GetConsoleCommands();
 696
 697                 // when a server is running we only execute console commands on server frames
 698                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
 699                 // otherwise we execute them on client frames
 700                 if (sv.active ? sv_timer > 0 : cl_timer > 0)
 701                 {
 702                         // process console commands
 703                         CL_VM_PreventInformationLeaks();
 704                         Cbuf_Execute();
 705                         R_TimeReport("console");
 706                 }
 707
 708                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
 709
 710                 // if the accumulators haven't become positive yet, wait a while
 711                 if (cls.state == ca_dedicated)
 712                         wait = sv_timer * -1000000.0;
 713                 else if (!sv.active)
 714                         wait = cl_timer * -1000000.0;
 715                 else
 716                         wait = max(cl_timer, sv_timer) * -1000000.0;
 717                 wait = bound(0, wait, 100000);
 718
 719                 if (!cls.timedemo && wait >= 1)
 720                 {
 721                         double time0 = Sys_DoubleTime();
 722                         if (sv_checkforpacketsduringsleep.integer)
 723                                 NetConn_SleepMicroseconds((int)wait);
 724                         else
 725                                 Sys_Sleep((int)wait);
 726                         svs.perf_acc_sleeptime += Sys_DoubleTime() - time0;
 727                         continue;
 728                 }
 729
 730         //-------------------
 731         //
 732         // server operations
 733         //
 734         //-------------------
 735
 736                 // limit the frametime steps to no more than 100ms each
 737                 if (cl_timer > 0.1)
 738                         cl_timer = 0.1;
 739                 if (sv_timer > 0.1)
 740                 {
 741                         svs.perf_acc_lost += (sv_timer - 0.1);
 742                         sv_timer = 0.1;
 743                 }
 744
 745                 if (sv.active && sv_timer > 0)
 746                 {
 747                         // execute one or more server frames, with an upper limit on how much
 748                         // execution time to spend on server frames to avoid freezing the game if
 749                         // the server is overloaded, this execution time limit means the game will
 750                         // slow down if the server is taking too long.
 751                         int framecount, framelimit = 1;
 752                         double advancetime, aborttime = 0;
 753                         float offset;
 754
 755                         // run the world state
 756                         // don't allow simulation to run too fast or too slow or logic glitches can occur
 757
 758                         // stop running server frames if the wall time reaches this value
 759                         if (sys_ticrate.value <= 0)
 760                                 advancetime = sv_timer;
 761                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
 762                         {
 763                                 // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
 764                                 advancetime = bound(0.01, cl_timer, sys_ticrate.value);
 765                                 framelimit = 10;
 766                                 aborttime = realtime + 0.1;
 767                         }
 768                         else
 769                         {
 770                                 advancetime = sys_ticrate.value;
 771                                 // listen servers can run multiple server frames per client frame
 772                                 if (cls.state == ca_connected)
 773                                 {
 774                                         framelimit = 10;
 775                                         aborttime = realtime + 0.1;
 776                                 }
 777                         }
 778                         if(slowmo.value > 0 && slowmo.value < 1)
 779                                 advancetime = min(advancetime, 0.1 / slowmo.value);
 780                         else
 781                                 advancetime = min(advancetime, 0.1);
 782
 783                         if(advancetime > 0)
 784                         {
 785                                 offset = sv_timer + (Sys_DoubleTime() - realtime);
 786                                 ++svs.perf_acc_offset_samples;
 787                                 svs.perf_acc_offset += offset;
 788                                 svs.perf_acc_offset_squared += offset * offset;
 789                                 if(svs.perf_acc_offset_max < offset)
 790                                         svs.perf_acc_offset_max = offset;
 791                         }
 792
 793                         // only advance time if not paused
 794                         // the game also pauses in singleplayer when menu or console is used
 795                         sv.frametime = advancetime * slowmo.value;
 796                         if (host_framerate.value)
 797                                 sv.frametime = host_framerate.value;
 798                         if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
 799                                 sv.frametime = 0;
 800
 801                         // setup the VM frame
 802                         SV_VM_Begin();
 803
 804                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
 805                         {
 806                                 sv_timer -= advancetime;
 807
 808                                 // move things around and think unless paused
 809                                 if (sv.frametime)
 810                                         SV_Physics();
 811
 812                                 // if this server frame took too long, break out of the loop
 813                                 if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
 814                                         break;
 815                         }
 816                         R_TimeReport("serverphysics");
 817
 818                         // send all messages to the clients
 819                         SV_SendClientMessages();
 820
 821                         if (sv.paused == 1 && realtime > sv.pausedstart && sv.pausedstart > 0) {
 822                                 prog->globals.generic[OFS_PARM0] = realtime - sv.pausedstart;
 823                                 PRVM_ExecuteProgram(prog->funcoffsets.SV_PausedTic, "QC function SV_PausedTic is missing");
 824                         }
 825
 826                         // end the server VM frame
 827                         SV_VM_End();
 828
 829                         // send an heartbeat if enough time has passed since the last one
 830                         NetConn_Heartbeat(0);
 831                         R_TimeReport("servernetwork");
 832                 }
 833
 834         //-------------------
 835         //
 836         // client operations
 837         //
 838         //-------------------
 839
 840                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo || ((vid_activewindow ? cl_maxfps : cl_maxidlefps).value < 1)))
 841                 {
 842                         R_TimeReport("---");
 843                         // decide the simulation time
 844                         if (cls.capturevideo.active)
 845                         {
 846                                 //***
 847                                 if (cls.capturevideo.realtime)
 848                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
 849                                 else
 850                                 {
 851                                         clframetime = 1.0 / cls.capturevideo.framerate;
 852                                         cl.realframetime = max(cl_timer, clframetime);
 853                                 }
 854                         }
 855                         else if (vid_activewindow && cl_maxfps.value >= 1 && !cls.timedemo)
 856                         {
 857                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxfps.value);
 858                                 // when running slow, we need to sleep to keep input responsive
 859                                 wait = bound(0, cl_maxfps_alwayssleep.value * 1000, 100000);
 860                                 if (wait > 0)
 861                                         Sys_Sleep((int)wait);
 862                         }
 863                         else if (!vid_activewindow && cl_maxidlefps.value >= 1 && !cls.timedemo)
 864                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxidlefps.value);
 865                         else
 866                                 clframetime = cl.realframetime = cl_timer;
 867
 868                         // apply slowmo scaling
 869                         clframetime *= cl.movevars_timescale;
 870                         // scale playback speed of demos by slowmo cvar
 871                         if (cls.demoplayback)
 872                         {
 873                                 clframetime *= slowmo.value;
 874                                 // if demo playback is paused, don't advance time at all
 875                                 if (cls.demopaused)
 876                                         clframetime = 0;
 877                         }
 878
 879                         // host_framerate overrides all else
 880                         if (host_framerate.value)
 881                                 clframetime = host_framerate.value;
 882
 883                         if (cl.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
 884                                 clframetime = 0;
 885
 886                         if (cls.timedemo)
 887                                 clframetime = cl.realframetime = cl_timer;
 888
 889                         // deduct the frame time from the accumulator
 890                         cl_timer -= cl.realframetime;
 891
 892                         cl.oldtime = cl.time;
 893                         cl.time += clframetime;
 894
 895                         // update video
 896                         if (host_speeds.integer)
 897                                 time1 = Sys_DoubleTime();
 898
 899                         // Collect input into cmd
 900                         CL_Input();
 901
 902                         // check for new packets
 903                         NetConn_ClientFrame();
 904
 905                         // read a new frame from a demo if needed
 906                         CL_ReadDemoMessage();
 907
 908                         // now that packets have been read, send input to server
 909                         CL_SendMove();
 910
 911                         // update client world (interpolate entities, create trails, etc)
 912                         CL_UpdateWorld();
 913
 914                         CL_Video_Frame();
 915                         CL_Gecko_Frame();
 916
 917                         R_TimeReport("client");
 918
 919                         CL_UpdateScreen();
 920
 921                         if (host_speeds.integer)
 922                                 time2 = Sys_DoubleTime();
 923
 924                         // update audio
 925                         if(cl.csqc_usecsqclistener)
 926                         {
 927                                 S_Update(&cl.csqc_listenermatrix);
 928                                 cl.csqc_usecsqclistener = false;
 929                         }
 930                         else
 931                                 S_Update(&r_refdef.view.matrix);
 932
 933                         CDAudio_Update();
 934                         R_TimeReport("audio");
 935
 936                         // reset gathering of mouse input
 937                         in_mouse_x = in_mouse_y = 0;
 938
 939                         if (host_speeds.integer)
 940                         {
 941                                 pass1 = (int)((time1 - time3)*1000000);
 942                                 time3 = Sys_DoubleTime();
 943                                 pass2 = (int)((time2 - time1)*1000000);
 944                                 pass3 = (int)((time3 - time2)*1000000);
 945                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
 946                                                         pass1+pass2+pass3, pass1, pass2, pass3);
 947                         }
 948                 }
 949
 950 #if MEMPARANOIA
 951                 Mem_CheckSentinelsGlobal();
 952 #else
 953                 if (developer_memorydebug.integer)
 954                         Mem_CheckSentinelsGlobal();
 955 #endif
 956
 957                 // if there is some time remaining from this frame, reset the timers
 958                 if (cl_timer >= 0)
 959                         cl_timer = 0;
 960                 if (sv_timer >= 0)
 961                 {
 962                         svs.perf_acc_lost += sv_timer;
 963                         sv_timer = 0;
 964                 }
 965
 966                 host_framecount++;
 967         }
 968 }
 969
 970 //============================================================================
 971
 972 qboolean vid_opened = false;
 973 void Host_StartVideo(void)
 974 {
 975         if (!vid_opened && cls.state != ca_dedicated)
 976         {
 977                 vid_opened = true;
 978                 // make sure we open sockets before opening video because the Windows Firewall "unblock?" dialog can screw up the graphics context on some graphics drivers
 979                 NetConn_UpdateSockets();
 980                 VID_Start();
 981                 CDAudio_Startup();
 982         }
 983 }
 984
 985 char engineversion[128];
 986
 987 qboolean sys_nostdout = false;
 988
 989 extern void u8_Init(void);
 990 extern void Render_Init(void);
 991 extern void Mathlib_Init(void);
 992 extern void FS_Init(void);
 993 extern void FS_Shutdown(void);
 994 extern void PR_Cmd_Init(void);
 995 extern void COM_Init_Commands(void);
 996 extern void FS_Init_Commands(void);
 997 extern qboolean host_stuffcmdsrun;
 998
 999 /*
1000 ====================
1001 Host_Init
1002 ====================
1003 */
1004 static void Host_Init (void)
1005 {
1006         int i;
1007         const char* os;
1008
1009         if (COM_CheckParm("-profilegameonly"))
1010                 Sys_AllowProfiling(false);
1011
1012         // LordHavoc: quake never seeded the random number generator before... heh
1013         if (COM_CheckParm("-benchmark"))
1014                 srand(0); // predictable random sequence for -benchmark
1015         else
1016                 srand((unsigned int)time(NULL));
1017
1018         // FIXME: this is evil, but possibly temporary
1019         // LordHavoc: doesn't seem very temporary...
1020         // LordHavoc: made this a saved cvar
1021 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
1022         if (COM_CheckParm("-developer"))
1023         {
1024                 developer.value = developer.integer = 1;
1025                 developer.string = "1";
1026         }
1027
1028         if (COM_CheckParm("-developer2"))
1029         {
1030                 developer.value = developer.integer = 1;
1031                 developer.string = "1";
1032                 developer_extra.value = developer_extra.integer = 1;
1033                 developer_extra.string = "1";
1034                 developer_insane.value = developer_insane.integer = 1;
1035                 developer_insane.string = "1";
1036                 developer_memory.value = developer_memory.integer = 1;
1037                 developer_memory.string = "1";
1038                 developer_memorydebug.value = developer_memorydebug.integer = 1;
1039                 developer_memorydebug.string = "1";
1040         }
1041
1042 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
1043         if (COM_CheckParm("-nostdout"))
1044                 sys_nostdout = 1;
1045
1046         // used by everything
1047         Memory_Init();
1048
1049         // initialize console command/cvar/alias/command execution systems
1050         Cmd_Init();
1051
1052         // initialize memory subsystem cvars/commands
1053         Memory_Init_Commands();
1054
1055         // initialize console and logging and its cvars/commands
1056         Con_Init();
1057
1058         // initialize various cvars that could not be initialized earlier
1059         u8_Init();
1060         Curl_Init_Commands();
1061         Cmd_Init_Commands();
1062         Sys_Init_Commands();
1063         COM_Init_Commands();
1064         FS_Init_Commands();
1065
1066         // initialize console window (only used by sys_win.c)
1067         Sys_InitConsole();
1068
1069         // detect gamemode from commandline options or executable name
1070         COM_InitGameType();
1071
1072         // construct a version string for the corner of the console
1073         os = DP_OS_NAME;
1074         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
1075         Con_Printf("%s\n", engineversion);
1076
1077         // initialize ixtable
1078         Mathlib_Init();
1079
1080         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
1081         FS_Init();
1082
1083         NetConn_Init();
1084         Curl_Init();
1085         //PR_Init();
1086         //PR_Cmd_Init();
1087         PRVM_Init();
1088         Mod_Init();
1089         World_Init();
1090         SV_Init();
1091         Host_InitCommands();
1092         Host_InitLocal();
1093         Host_ServerOptions();
1094
1095         if (cls.state == ca_dedicated)
1096                 Cmd_AddCommand ("disconnect", CL_Disconnect_f, "disconnect from server (or disconnect all clients if running a server)");
1097         else
1098         {
1099                 Con_DPrintf("Initializing client\n");
1100
1101                 R_Modules_Init();
1102                 Palette_Init();
1103                 MR_Init_Commands();
1104                 VID_Shared_Init();
1105                 VID_Init();
1106                 Render_Init();
1107                 S_Init();
1108                 CDAudio_Init();
1109                 Key_Init();
1110                 V_Init();
1111                 CL_Init();
1112         }
1113
1114         // set up the default startmap_sp and startmap_dm aliases (mods can
1115         // override these) and then execute the quake.rc startup script
1116         if (gamemode == GAME_NEHAHRA)
1117                 Cbuf_AddText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec quake.rc\n");
1118         else if (gamemode == GAME_TRANSFUSION)
1119                 Cbuf_AddText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec quake.rc\n");
1120         else if (gamemode == GAME_TEU)
1121                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
1122         else
1123                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec quake.rc\n");
1124         Cbuf_Execute();
1125
1126         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
1127         if (!host_stuffcmdsrun)
1128         {
1129                 Cbuf_AddText("exec default.cfg\nexec config.cfg\nexec autoexec.cfg\nstuffcmds\n");
1130                 Cbuf_Execute();
1131         }
1132
1133         // put up the loading image so the user doesn't stare at a black screen...
1134         SCR_BeginLoadingPlaque();
1135
1136         // FIXME: put this into some neat design, but the menu should be allowed to crash
1137         // without crashing the whole game, so this should just be a short-time solution
1138
1139         // here comes the not so critical stuff
1140         if (setjmp(host_abortframe)) {
1141                 return;
1142         }
1143
1144         if (cls.state != ca_dedicated)
1145         {
1146                 MR_Init();
1147         }
1148
1149         // check for special benchmark mode
1150 // 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)
1151         i = COM_CheckParm("-benchmark");
1152         if (i && i + 1 < com_argc)
1153         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1154         {
1155                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
1156                 Cbuf_Execute();
1157         }
1158
1159         // check for special demo mode
1160 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1161         i = COM_CheckParm("-demo");
1162         if (i && i + 1 < com_argc)
1163         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1164         {
1165                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1166                 Cbuf_Execute();
1167         }
1168
1169 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
1170         i = COM_CheckParm("-capturedemo");
1171         if (i && i + 1 < com_argc)
1172         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1173         {
1174                 Cbuf_AddText(va("playdemo %s\ncl_capturevideo 1\n", com_argv[i + 1]));
1175                 Cbuf_Execute();
1176         }
1177
1178         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1179         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1180         {
1181                 Cbuf_AddText("startmap_dm\n");
1182                 Cbuf_Execute();
1183         }
1184
1185         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1186         {
1187                 Cbuf_AddText("togglemenu\n");
1188                 Cbuf_Execute();
1189         }
1190
1191         Con_DPrint("========Initialized=========\n");
1192
1193         //Host_StartVideo();
1194 }
1195
1196
1197 /*
1198 ===============
1199 Host_Shutdown
1200
1201 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1202 to run quit through here before the final handoff to the sys code.
1203 ===============
1204 */
1205 void Host_Shutdown(void)
1206 {
1207         static qboolean isdown = false;
1208
1209         if (isdown)
1210         {
1211                 Con_Print("recursive shutdown\n");
1212                 return;
1213         }
1214         if (setjmp(host_abortframe))
1215         {
1216                 Con_Print("aborted the quitting frame?!?\n");
1217                 return;
1218         }
1219         isdown = true;
1220
1221         // be quiet while shutting down
1222         S_StopAllSounds();
1223
1224         // disconnect client from server if active
1225         CL_Disconnect();
1226
1227         // shut down local server if active
1228         Host_ShutdownServer ();
1229
1230         // Shutdown menu
1231         if(MR_Shutdown)
1232                 MR_Shutdown();
1233
1234         // AK shutdown PRVM
1235         // AK hmm, no PRVM_Shutdown(); yet
1236
1237         CL_Gecko_Shutdown();
1238         CL_Video_Shutdown();
1239
1240         Host_SaveConfig();
1241
1242         CDAudio_Shutdown ();
1243         S_Terminate ();
1244         Curl_Shutdown ();
1245         NetConn_Shutdown ();
1246         //PR_Shutdown ();
1247
1248         if (cls.state != ca_dedicated)
1249         {
1250                 R_Modules_Shutdown();
1251                 VID_Shutdown();
1252         }
1253
1254         Cmd_Shutdown();
1255         Key_Shutdown();
1256         CL_Shutdown();
1257         Sys_Shutdown();
1258         Log_Close();
1259         FS_Shutdown();
1260         Con_Shutdown();
1261         Memory_Shutdown();
1262 }
1263