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