src/openttd.cpp

   1 /* $Id$ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
   6  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   7  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
   8  */
   9
  10 /** @file openttd.cpp Functions related to starting OpenTTD. */
  11
  12 #include "stdafx.h"
  13
  14 #include "blitter/blitter.h"
  15 #include "sound/sound_driver.hpp"
  16 #include "music/music_driver.hpp"
  17 #include "video/video_driver.hpp"
  18
  19 #include "font.h"
  20 #include "error.h"
  21 #include "string.h"
  22 #include "gui.h"
  23
  24 #include "base_media_base.h"
  25 #include "saveload/saveload.h"
  26 #include "company_func.h"
  27 #include "command_func.h"
  28 #include "news_func.h"
  29 #include "fios.h"
  30 #include "aircraft.h"
  31 #include "roadveh.h"
  32 #include "train.h"
  33 #include "ship.h"
  34 #include "console_func.h"
  35 #include "screenshot.h"
  36 #include "network/network.h"
  37 #include "network/network_func.h"
  38 #include "ai/ai.hpp"
  39 #include "ai/ai_config.hpp"
  40 #include "settings_func.h"
  41 #include "genworld.h"
  42 #include "progress.h"
  43 #include "strings_func.h"
  44 #include "date_func.h"
  45 #include "vehicle_func.h"
  46 #include "gamelog.h"
  47 #include "animated_tile_func.h"
  48 #include "roadstop_base.h"
  49 #include "elrail_func.h"
  50 #include "rev.h"
  51 #include "highscore.h"
  52 #include "station_base.h"
  53 #include "crashlog.h"
  54 #include "engine_func.h"
  55 #include "core/random_func.hpp"
  56 #include "rail_gui.h"
  57 #include "core/backup_type.hpp"
  58 #include "hotkeys.h"
  59 #include "newgrf.h"
  60 #include "misc/getoptdata.h"
  61 #include "game/game.hpp"
  62 #include "game/game_config.hpp"
  63 #include "town.h"
  64 #include "subsidy_func.h"
  65 #include "gfx_layout.h"
  66 #include "industry.h"
  67
  68 #include "linkgraph/linkgraphschedule.h"
  69
  70 #include <stdarg.h>
  71
  72 void CallLandscapeTick();
  73 void IncreaseDate();
  74 void DoPaletteAnimations();
  75 void MusicLoop();
  76 void ResetMusic();
  77 void CallWindowTickEvent();
  78 bool HandleBootstrap();
  79
  80 extern Company *DoStartupNewCompany(bool is_ai, CompanyID company = INVALID_COMPANY);
  81 extern void ShowOSErrorBox(const char *buf, bool system);
  82 extern char *_config_file;
  83
  84 /**
  85  * Error handling for fatal user errors.
  86  * @param s the string to print.
  87  * @note Does NEVER return.
  88  */
  89 void CDECL usererror(const char *s, ...)
  90 {
  91         va_list va;
  92         char buf[512];
  93
  94         va_start(va, s);
  95         bstrvfmt (buf, s, va);
  96         va_end(va);
  97
  98         ShowOSErrorBox(buf, false);
  99         if (VideoDriver::GetActiveDriver() != NULL) VideoDriver::GetActiveDriver()->Stop();
 100
 101         exit(1);
 102 }
 103
 104 /**
 105  * Error handling for fatal non-user errors.
 106  * @param s the string to print.
 107  * @note Does NEVER return.
 108  */
 109 void CDECL error(const char *s, ...)
 110 {
 111         va_list va;
 112         char buf[512];
 113
 114         va_start(va, s);
 115         bstrvfmt (buf, s, va);
 116         va_end(va);
 117
 118         ShowOSErrorBox(buf, true);
 119
 120         /* Set the error message for the crash log and then invoke it. */
 121         CrashLog::SetErrorMessage(buf);
 122         abort();
 123 }
 124
 125 /**
 126  * Shows some information on the console/a popup box depending on the OS.
 127  * @param str the text to show.
 128  */
 129 void CDECL ShowInfoF(const char *str, ...)
 130 {
 131         va_list va;
 132         char buf[1024];
 133         va_start(va, str);
 134         bstrvfmt (buf, str, va);
 135         va_end(va);
 136         ShowInfo(buf);
 137 }
 138
 139 /**
 140  * Show the help message when someone passed a wrong parameter.
 141  */
 142 static void ShowHelp()
 143 {
 144         sstring<8192> buf;
 145
 146         buf.fmt ("OpenTTD %s\n", _openttd_revision);
 147         buf.append (
 148                 "\n"
 149                 "\n"
 150                 "Command line options:\n"
 151                 "  -v drv              = Set video driver (see below)\n"
 152                 "  -s drv              = Set sound driver (see below) (param bufsize,hz)\n"
 153                 "  -m drv              = Set music driver (see below)\n"
 154                 "  -b drv              = Set the blitter to use (see below)\n"
 155                 "  -r res              = Set resolution (for instance 800x600)\n"
 156                 "  -h                  = Display this help text\n"
 157                 "  -t year             = Set starting year\n"
 158                 "  -d [[fac=]lvl[,...]]= Debug mode\n"
 159                 "  -e                  = Start Editor\n"
 160                 "  -g [savegame]       = Start new/save game immediately\n"
 161                 "  -G seed             = Set random seed\n"
 162 #if defined(ENABLE_NETWORK)
 163                 "  -n [ip:port#company]= Join network game\n"
 164                 "  -p password         = Password to join server\n"
 165                 "  -P password         = Password to join company\n"
 166                 "  -D [ip][:port]      = Start dedicated server\n"
 167                 "  -l ip[:port]        = Redirect DEBUG()\n"
 168 #if !defined(__MORPHOS__) && !defined(__AMIGA__) && !defined(WIN32)
 169                 "  -f                  = Fork into the background (dedicated only)\n"
 170 #endif
 171 #endif /* ENABLE_NETWORK */
 172                 "  -I graphics_set     = Force the graphics set (see below)\n"
 173                 "  -S sounds_set       = Force the sounds set (see below)\n"
 174                 "  -M music_set        = Force the music set (see below)\n"
 175                 "  -c config_file      = Use 'config_file' instead of 'openttd.cfg'\n"
 176                 "  -x                  = Do not automatically save to config file on exit\n"
 177                 "  -q savegame         = Write some information about the savegame and exit\n"
 178                 "\n"
 179         );
 180
 181         /* List the graphics packs */
 182         BaseGraphics::GetSetsList (&buf);
 183
 184         /* List the sounds packs */
 185         BaseSounds::GetSetsList (&buf);
 186
 187         /* List the music packs */
 188         BaseMusic::GetSetsList (&buf);
 189
 190         /* List the drivers */
 191         MusicDriver::GetDriversInfo (&buf);
 192         SoundDriver::GetDriversInfo (&buf);
 193         VideoDriver::GetDriversInfo (&buf);
 194
 195         /* List the blitters */
 196         Blitter::list (&buf);
 197
 198         /* List the debug facilities. */
 199         DumpDebugFacilityNames (&buf);
 200
 201         /* We need to initialize the AI, so it finds the AIs */
 202         AI::Initialize();
 203         AI::GetConsoleList (&buf, true);
 204         AI::Uninitialize(true);
 205
 206         /* We need to initialize the GameScript, so it finds the GSs */
 207         Game::Initialize();
 208         Game::GetConsoleList (&buf, true);
 209         Game::Uninitialize(true);
 210
 211         /* ShowInfo put output to stderr, but version information should go
 212          * to stdout; this is the only exception */
 213 #if !defined(WIN32) && !defined(WIN64)
 214         printf("%s\n", buf.c_str());
 215 #else
 216         ShowInfo(buf.c_str());
 217 #endif
 218 }
 219
 220 static void WriteSavegameInfo(const char *name)
 221 {
 222         uint32 last_ottd_rev = 0;
 223         byte ever_modified = 0;
 224         bool removed_newgrfs = false;
 225
 226         GamelogInfo(&_load_check_data.gamelog, &last_ottd_rev, &ever_modified, &removed_newgrfs);
 227
 228         sstring<8192> buf;
 229         buf.append_fmt ("Name:         %s\n", name);
 230         buf.append_fmt ("Savegame ver: %c%d\n", _load_check_data.sl_version.type == SGT_FTTD ? 'F' : 'O', _load_check_data.sl_version.fttd.version);
 231         buf.append_fmt ("NewGRF ver:   0x%08X\n", last_ottd_rev);
 232         buf.append_fmt ("Modified:     %d\n", ever_modified);
 233
 234         if (removed_newgrfs) {
 235                 buf.append ("NewGRFs have been removed\n");
 236         }
 237
 238         buf.append ("NewGRFs:\n");
 239         if (_load_check_data.HasNewGrfs()) {
 240                 for (GRFConfig *c = _load_check_data.grfconfig; c != NULL; c = c->next) {
 241                         char md5sum[33];
 242                         md5sumToString (md5sum, HasBit(c->flags, GCF_COMPATIBLE) ? c->original_md5sum : c->ident.md5sum);
 243                         buf.append_fmt ("%08X %s %s\n", c->ident.grfid, md5sum, c->filename);
 244                 }
 245         }
 246
 247         /* ShowInfo put output to stderr, but version information should go
 248          * to stdout; this is the only exception */
 249 #if !defined(WIN32) && !defined(WIN64)
 250         printf("%s\n", buf.c_str());
 251 #else
 252         ShowInfo(buf.c_str());
 253 #endif
 254 }
 255
 256
 257 /**
 258  * Extract the resolution from the given string and store
 259  * it in the 'res' parameter.
 260  * @param res variable to store the resolution in.
 261  * @param s   the string to decompose.
 262  */
 263 static void ParseResolution(Dimension *res, const char *s)
 264 {
 265         const char *t = strchr(s, 'x');
 266         if (t == NULL) {
 267                 ShowInfoF("Invalid resolution '%s'", s);
 268                 return;
 269         }
 270
 271         res->width  = max(strtoul(s, NULL, 0), 64UL);
 272         res->height = max(strtoul(t + 1, NULL, 0), 64UL);
 273 }
 274
 275
 276 /**
 277  * Unitializes drivers, frees allocated memory, cleans pools, ...
 278  * Generally, prepares the game for shutting down
 279  */
 280 static void ShutdownGame()
 281 {
 282         IConsoleFree();
 283
 284         if (_network_available) NetworkShutDown(); // Shut down the network and close any open connections
 285
 286         MusicDriver::ShutdownDriver();
 287         SoundDriver::ShutdownDriver();
 288         VideoDriver::ShutdownDriver();
 289
 290         UnInitWindowSystem();
 291
 292         /* stop the scripts */
 293         AI::Uninitialize(false);
 294         Game::Uninitialize(false);
 295
 296         /* Uninitialize variables that are allocated dynamically */
 297         GamelogReset();
 298
 299 #ifdef ENABLE_NETWORK
 300         free(_config_file);
 301 #endif
 302
 303         LinkGraphSchedule::Clear();
 304         PoolBase::Clean(PT_ALL);
 305
 306         /* No NewGRFs were loaded when it was still bootstrapping. */
 307         if (_game_mode != GM_BOOTSTRAP) ResetNewGRFData();
 308
 309         /* Close all and any open filehandles */
 310         FioCloseAll();
 311 }
 312
 313 /**
 314  * Load the introduction game.
 315  * @param load_newgrfs Whether to load the NewGRFs or not.
 316  */
 317 static void LoadIntroGame(bool load_newgrfs = true)
 318 {
 319         _game_mode = GM_MENU;
 320
 321         if (load_newgrfs) ResetGRFConfig(false);
 322
 323         /* Setup main window */
 324         ResetWindowSystem();
 325         SetupColoursAndInitialWindow();
 326
 327         /* Load the default opening screen savegame */
 328         if (!LoadGame ("opntitle.dat", false, false, BASESET_DIR)) {
 329                 GenerateWorld(GWM_EMPTY, 64, 64); // if failed loading, make empty world.
 330                 WaitTillGeneratedWorld();
 331                 SetLocalCompany(COMPANY_SPECTATOR);
 332         } else {
 333                 SetLocalCompany(COMPANY_FIRST);
 334         }
 335
 336         _pause_mode = PM_UNPAUSED;
 337         _cursor.fix_at = false;
 338
 339         CheckForMissingGlyphs();
 340
 341         /* Play main theme */
 342         if (MusicDriver::GetActiveDriver()->IsSongPlaying()) ResetMusic();
 343 }
 344
 345 void MakeNewgameSettingsLive()
 346 {
 347         for (CompanyID c = COMPANY_FIRST; c < MAX_COMPANIES; c++) {
 348                 if (_settings_game.ai_config[c] != NULL) {
 349                         delete _settings_game.ai_config[c];
 350                 }
 351         }
 352         if (_settings_game.game_config != NULL) {
 353                 delete _settings_game.game_config;
 354         }
 355
 356         /* Copy newgame settings to active settings.
 357          * Also initialise old settings needed for savegame conversion. */
 358         _settings_game = _settings_newgame;
 359         _old_vds = _settings_client.company.vehicle;
 360         _old_no_servicing_if_no_breakdowns = true;
 361
 362         for (CompanyID c = COMPANY_FIRST; c < MAX_COMPANIES; c++) {
 363                 _settings_game.ai_config[c] = NULL;
 364                 if (_settings_newgame.ai_config[c] != NULL) {
 365                         _settings_game.ai_config[c] = new AIConfig(_settings_newgame.ai_config[c]);
 366                 }
 367         }
 368         _settings_game.game_config = NULL;
 369         if (_settings_newgame.game_config != NULL) {
 370                 _settings_game.game_config = new GameConfig(_settings_newgame.game_config);
 371         }
 372 }
 373
 374 void OpenBrowser(const char *url)
 375 {
 376         /* Make sure we only accept urls that are sure to open a browser. */
 377         if (strstr(url, "http://") != url && strstr(url, "https://") != url) return;
 378
 379         extern void OSOpenBrowser(const char *url);
 380         OSOpenBrowser(url);
 381 }
 382
 383 /** Callback structure of statements to be executed after the NewGRF scan. */
 384 struct AfterNewGRFScan : NewGRFScanCallback {
 385         Year startyear;                    ///< The start year.
 386         uint generation_seed;              ///< Seed for the new game.
 387         char *dedicated_host;              ///< Hostname for the dedicated server.
 388         uint16 dedicated_port;             ///< Port for the dedicated server.
 389         char *network_conn;                ///< Information about the server to connect to, or NULL.
 390         const char *join_server_password;  ///< The password to join the server with.
 391         const char *join_company_password; ///< The password to join the company with.
 392         bool *save_config_ptr;             ///< The pointer to the save config setting.
 393         bool save_config;                  ///< The save config setting.
 394
 395         /**
 396          * Create a new callback.
 397          * @param save_config_ptr Pointer to the save_config local variable which
 398          *                        decides whether to save of exit or not.
 399          */
 400         AfterNewGRFScan(bool *save_config_ptr) :
 401                         startyear(INVALID_YEAR), generation_seed(GENERATE_NEW_SEED),
 402                         dedicated_host(NULL), dedicated_port(0), network_conn(NULL),
 403                         join_server_password(NULL), join_company_password(NULL),
 404                         save_config_ptr(save_config_ptr), save_config(true)
 405         {
 406         }
 407
 408         virtual void OnNewGRFsScanned()
 409         {
 410                 ResetGRFConfig(false);
 411
 412                 TarScanner::DoScan(TarScanner::SCENARIO);
 413
 414                 AI::Initialize();
 415                 Game::Initialize();
 416
 417                 /* We want the new (correct) NewGRF count to survive the loading. */
 418                 uint last_newgrf_count = _settings_client.gui.last_newgrf_count;
 419                 LoadFromConfig();
 420                 _settings_client.gui.last_newgrf_count = last_newgrf_count;
 421                 /* Since the default for the palette might have changed due to
 422                  * reading the configuration file, recalculate that now. */
 423                 UpdateNewGRFConfigPalette();
 424
 425                 Game::Uninitialize(true);
 426                 AI::Uninitialize(true);
 427                 CheckConfig();
 428                 LoadFromHighScore();
 429                 LoadHotkeysFromConfig();
 430                 WindowDesc::LoadFromConfig();
 431
 432                 /* We have loaded the config, so we may possibly save it. */
 433                 *save_config_ptr = save_config;
 434
 435                 /* restore saved music volume */
 436                 MusicDriver::GetActiveDriver()->SetVolume(_settings_client.music.music_vol);
 437
 438                 if (startyear != INVALID_YEAR) _settings_newgame.game_creation.starting_year = startyear;
 439                 if (generation_seed != GENERATE_NEW_SEED) _settings_newgame.game_creation.generation_seed = generation_seed;
 440
 441 #if defined(ENABLE_NETWORK)
 442                 if (dedicated_host != NULL) {
 443                         _network_bind_list.Clear();
 444                         *_network_bind_list.Append() = xstrdup(dedicated_host);
 445                 }
 446                 if (dedicated_port != 0) _settings_client.network.server_port = dedicated_port;
 447 #endif /* ENABLE_NETWORK */
 448
 449                 /* initialize the ingame console */
 450                 IConsoleInit();
 451                 InitializeGUI();
 452                 IConsoleCmdExec("exec scripts/autoexec.scr 0");
 453
 454                 /* Make sure _settings is filled with _settings_newgame if we switch to a game directly */
 455                 if (_switch_mode != SM_NONE) MakeNewgameSettingsLive();
 456
 457 #ifdef ENABLE_NETWORK
 458                 if (_network_available && network_conn != NULL) {
 459                         const char *port = NULL;
 460                         const char *company = NULL;
 461                         uint16 rport = NETWORK_DEFAULT_PORT;
 462                         CompanyID join_as = COMPANY_NEW_COMPANY;
 463
 464                         ParseConnectionString(&company, &port, network_conn);
 465
 466                         if (company != NULL) {
 467                                 join_as = (CompanyID)atoi(company);
 468
 469                                 if (join_as != COMPANY_SPECTATOR) {
 470                                         join_as--;
 471                                         if (join_as >= MAX_COMPANIES) {
 472                                                 delete this;
 473                                                 return;
 474                                         }
 475                                 }
 476                         }
 477                         if (port != NULL) rport = atoi(port);
 478
 479                         LoadIntroGame();
 480                         _switch_mode = SM_NONE;
 481                         NetworkClientConnectGame(NetworkAddress(network_conn, rport), join_as, join_server_password, join_company_password);
 482                 }
 483 #endif /* ENABLE_NETWORK */
 484
 485                 /* After the scan we're not used anymore. */
 486                 delete this;
 487         }
 488 };
 489
 490 #if defined(UNIX) && !defined(__MORPHOS__)
 491 extern void DedicatedFork();
 492 #endif
 493
 494 /** Options of OpenTTD. */
 495 static const OptionData _options[] = {
 496          GETOPT_SHORT_VALUE('I'),
 497          GETOPT_SHORT_VALUE('S'),
 498          GETOPT_SHORT_VALUE('M'),
 499          GETOPT_SHORT_VALUE('m'),
 500          GETOPT_SHORT_VALUE('s'),
 501          GETOPT_SHORT_VALUE('v'),
 502          GETOPT_SHORT_VALUE('b'),
 503 #if defined(ENABLE_NETWORK)
 504         GETOPT_SHORT_OPTVAL('D'),
 505         GETOPT_SHORT_OPTVAL('n'),
 506          GETOPT_SHORT_VALUE('l'),
 507          GETOPT_SHORT_VALUE('p'),
 508          GETOPT_SHORT_VALUE('P'),
 509 #if !defined(__MORPHOS__) && !defined(__AMIGA__) && !defined(WIN32)
 510          GETOPT_SHORT_NOVAL('f'),
 511 #endif
 512 #endif /* ENABLE_NETWORK */
 513          GETOPT_SHORT_VALUE('r'),
 514          GETOPT_SHORT_VALUE('t'),
 515         GETOPT_SHORT_OPTVAL('d'),
 516          GETOPT_SHORT_NOVAL('e'),
 517         GETOPT_SHORT_OPTVAL('g'),
 518          GETOPT_SHORT_VALUE('G'),
 519          GETOPT_SHORT_VALUE('c'),
 520          GETOPT_SHORT_NOVAL('x'),
 521          GETOPT_SHORT_VALUE('q'),
 522          GETOPT_SHORT_NOVAL('h'),
 523         GETOPT_END()
 524 };
 525
 526 /**
 527  * Main entry point for this lovely game.
 528  * @param argc The number of arguments passed to this game.
 529  * @param argv The values of the arguments.
 530  * @return 0 when there is no error.
 531  */
 532 int openttd_main(int argc, char *argv[])
 533 {
 534         char *musicdriver = NULL;
 535         char *sounddriver = NULL;
 536         char *videodriver = NULL;
 537         char *blitter = NULL;
 538         char *graphics_set = NULL;
 539         char *sounds_set = NULL;
 540         char *music_set = NULL;
 541         Dimension resolution = {0, 0};
 542         /* AfterNewGRFScan sets save_config to true after scanning completed. */
 543         bool save_config = false;
 544         AfterNewGRFScan *scanner = new AfterNewGRFScan(&save_config);
 545 #if defined(ENABLE_NETWORK)
 546         bool dedicated = false;
 547         char *debuglog_conn = NULL;
 548
 549         extern bool _dedicated_forks;
 550         _dedicated_forks = false;
 551 #endif /* ENABLE_NETWORK */
 552
 553         _game_mode = GM_MENU;
 554         _switch_mode = SM_MENU;
 555         _config_file = NULL;
 556
 557         GetOptData mgo(argc - 1, argv + 1, _options);
 558         int ret = 0;
 559
 560         int i;
 561         while ((i = mgo.GetOpt()) != -1) {
 562                 switch (i) {
 563                 case 'I': free(graphics_set); graphics_set = xstrdup(mgo.opt); break;
 564                 case 'S': free(sounds_set); sounds_set = xstrdup(mgo.opt); break;
 565                 case 'M': free(music_set); music_set = xstrdup(mgo.opt); break;
 566                 case 'm': free(musicdriver); musicdriver = xstrdup(mgo.opt); break;
 567                 case 's': free(sounddriver); sounddriver = xstrdup(mgo.opt); break;
 568                 case 'v': free(videodriver); videodriver = xstrdup(mgo.opt); break;
 569                 case 'b': free(blitter); blitter = xstrdup(mgo.opt); break;
 570 #if defined(ENABLE_NETWORK)
 571                 case 'D':
 572                         free(musicdriver);
 573                         free(sounddriver);
 574                         free(videodriver);
 575                         free(blitter);
 576                         musicdriver = xstrdup("null");
 577                         sounddriver = xstrdup("null");
 578                         videodriver = xstrdup("dedicated");
 579                         blitter = xstrdup("null");
 580                         dedicated = true;
 581                         SetDebugString("net=6");
 582                         if (mgo.opt != NULL) {
 583                                 /* Use the existing method for parsing (openttd -n).
 584                                  * However, we do ignore the #company part. */
 585                                 const char *temp = NULL;
 586                                 const char *port = NULL;
 587                                 ParseConnectionString(&temp, &port, mgo.opt);
 588                                 if (!StrEmpty(mgo.opt)) scanner->dedicated_host = mgo.opt;
 589                                 if (port != NULL) scanner->dedicated_port = atoi(port);
 590                         }
 591                         break;
 592                 case 'f': _dedicated_forks = true; break;
 593                 case 'n':
 594                         scanner->network_conn = mgo.opt; // optional IP parameter, NULL if unset
 595                         break;
 596                 case 'l':
 597                         debuglog_conn = mgo.opt;
 598                         break;
 599                 case 'p':
 600                         scanner->join_server_password = mgo.opt;
 601                         break;
 602                 case 'P':
 603                         scanner->join_company_password = mgo.opt;
 604                         break;
 605 #endif /* ENABLE_NETWORK */
 606                 case 'r': ParseResolution(&resolution, mgo.opt); break;
 607                 case 't': scanner->startyear = atoi(mgo.opt); break;
 608                 case 'd': {
 609 #if defined(WIN32)
 610                                 CreateConsole();
 611 #endif
 612                                 if (mgo.opt != NULL) SetDebugString(mgo.opt);
 613                                 break;
 614                         }
 615                 case 'e': _switch_mode = (_switch_mode == SM_LOAD_GAME || _switch_mode == SM_LOAD_SCENARIO ? SM_LOAD_SCENARIO : SM_EDITOR); break;
 616                 case 'g':
 617                         if (mgo.opt != NULL) {
 618                                 _file_to_saveload.SetName(mgo.opt);
 619                                 bool is_scenario = _switch_mode == SM_EDITOR || _switch_mode == SM_LOAD_SCENARIO;
 620                                 _switch_mode = is_scenario ? SM_LOAD_SCENARIO : SM_LOAD_GAME;
 621                                 _file_to_saveload.SetMode(SLO_LOAD, is_scenario ? FT_SCENARIO : FT_SAVEGAME, DFT_GAME_FILE);
 622
 623                                 /* if the file doesn't exist or it is not a valid savegame, let the saveload code show an error */
 624                                 const char *t = strrchr(_file_to_saveload.name, '.');
 625                                 if (t != NULL) {
 626                                         FiosType ft = FiosGetSavegameListCallback(SLO_LOAD, _file_to_saveload.name, t);
 627                                         if (ft != FIOS_TYPE_INVALID) _file_to_saveload.SetMode(ft);
 628                                 }
 629
 630                                 break;
 631                         }
 632
 633                         _switch_mode = SM_NEWGAME;
 634                         /* Give a random map if no seed has been given */
 635                         if (scanner->generation_seed == GENERATE_NEW_SEED) {
 636                                 scanner->generation_seed = InteractiveRandom();
 637                         }
 638                         break;
 639                 case 'q': {
 640                         DeterminePaths(argv[0]);
 641                         if (StrEmpty(mgo.opt)) {
 642                                 ret = 1;
 643                                 goto exit_noshutdown;
 644                         }
 645
 646                         sstring<80> title;
 647                         FiosGetSavegameListCallback (SLO_LOAD, mgo.opt, strrchr(mgo.opt, '.'), &title);
 648
 649                         _load_check_data.Clear();
 650                         bool res = LoadGame (mgo.opt, true, false, SAVE_DIR);
 651                         if (!res || _load_check_data.HasErrors()) {
 652                                 fprintf(stderr, "Failed to open savegame\n");
 653                                 if (_load_check_data.HasErrors()) {
 654                                         char buf[256];
 655                                         SetDParamStr(0, _load_check_data.error.data);
 656                                         GetString (buf, _load_check_data.error.str);
 657                                         fprintf(stderr, "%s\n", buf);
 658                                 }
 659                                 goto exit_noshutdown;
 660                         }
 661
 662                         WriteSavegameInfo (title.c_str());
 663
 664                         goto exit_noshutdown;
 665                 }
 666                 case 'G': scanner->generation_seed = atoi(mgo.opt); break;
 667                 case 'c': free(_config_file); _config_file = xstrdup(mgo.opt); break;
 668                 case 'x': scanner->save_config = false; break;
 669                 case 'h':
 670                         i = -2; // Force printing of help.
 671                         break;
 672                 }
 673                 if (i == -2) break;
 674         }
 675
 676         if (i == -2 || mgo.numleft > 0) {
 677                 /* Either the user typed '-h', he made an error, or he added unrecognized command line arguments.
 678                  * In all cases, print the help, and exit.
 679                  *
 680                  * The next two functions are needed to list the graphics sets. We can't do them earlier
 681                  * because then we cannot show it on the debug console as that hasn't been configured yet. */
 682                 DeterminePaths(argv[0]);
 683                 TarScanner::DoScan(TarScanner::BASESET);
 684                 BaseGraphics::FindSets();
 685                 BaseSounds::FindSets();
 686                 BaseMusic::FindSets();
 687                 ShowHelp();
 688
 689                 goto exit_noshutdown;
 690         }
 691
 692 #if defined(WINCE) && defined(_DEBUG)
 693         /* Switch on debug lvl 4 for WinCE if Debug release, as you can't give params, and you most likely do want this information */
 694         SetDebugString("4");
 695 #endif
 696
 697         DeterminePaths(argv[0]);
 698         TarScanner::DoScan(TarScanner::BASESET);
 699
 700 #if defined(ENABLE_NETWORK)
 701         if (dedicated) DEBUG(net, 0, "Starting dedicated version %s", _openttd_revision);
 702         if (_dedicated_forks && !dedicated) _dedicated_forks = false;
 703
 704 #if defined(UNIX) && !defined(__MORPHOS__)
 705         /* We must fork here, or we'll end up without some resources we need (like sockets) */
 706         if (_dedicated_forks) DedicatedFork();
 707 #endif
 708 #endif
 709
 710         LoadFromConfig(true);
 711
 712         if (resolution.width != 0) _cur_resolution = resolution;
 713
 714         /*
 715          * The width and height must be at least 1 pixel and width times
 716          * height times bytes per pixel must still fit within a 32 bits
 717          * integer, even for 32 bpp video modes. This way all internal
 718          * drawing routines work correctly.
 719          */
 720         _cur_resolution.width  = ClampU(_cur_resolution.width,  1, UINT16_MAX / 2);
 721         _cur_resolution.height = ClampU(_cur_resolution.height, 1, UINT16_MAX / 2);
 722
 723         /* Assume the cursor starts within the game as not all video drivers
 724          * get an event that the cursor is within the window when it is opened.
 725          * Saying the cursor is there makes no visible difference as it would
 726          * just be out of the bounds of the window. */
 727         _cursor.in_window = true;
 728
 729         /* enumerate language files */
 730         InitializeLanguagePacks();
 731
 732         /* Initialize the regular font for FreeType */
 733         InitFreeType(false);
 734
 735         /* This must be done early, since functions use the SetWindowDirty* calls */
 736         InitWindowSystem();
 737
 738         BaseGraphics::FindSets();
 739         {
 740                 const char *sel = (graphics_set != NULL) ? graphics_set : BaseGraphics::ini_set;
 741                 if (!BaseGraphics::SetSet (sel) && !StrEmpty (sel)) {
 742                         BaseGraphics::SetSet(NULL);
 743
 744                         ErrorMessageData msg(STR_CONFIG_ERROR, STR_CONFIG_ERROR_INVALID_BASE_GRAPHICS_NOT_FOUND);
 745                         msg.SetDParamStr (0, sel);
 746                         ScheduleErrorMessage(msg);
 747                 }
 748         }
 749         free(graphics_set);
 750
 751         /* Initialize game palette */
 752         GfxInitPalettes();
 753
 754         DEBUG(misc, 1, "Loading blitter...");
 755         {
 756                 const char *sel = (blitter != NULL) ? blitter : Blitter::ini;
 757                 bool autodetect = StrEmpty (sel);
 758                 Blitter::autodetected = autodetect;
 759                 /* Activate the initial blitter.
 760                  * This is only some initial guess, after NewGRFs have been loaded SwitchNewGRFBlitter may switch to a different one.
 761                  *  - Never guess anything, if the user specified a blitter. (Blitter::autodetected)
 762                  *  - Use 32bpp blitter if baseset or 8bpp-support settings says so.
 763                  *  - Use 8bpp blitter otherwise.
 764                  */
 765                 if (autodetect) {
 766 #ifdef DEDICATED
 767                         sel = "null";
 768 #else
 769                         bool use_32bpp = (_support8bpp == S8BPP_NONE)
 770                                         || (BaseGraphics::GetUsedSet() != NULL && BaseGraphics::GetUsedSet()->blitter != BLT_8BPP);
 771 #ifdef WITH_COCOA
 772                         /* Some people reported lack of fullscreen support in
 773                          * 8 bpp mode. While we prefer 8 bpp since it's
 774                          * faster, we will still have to test for support. */
 775                         bool QZ_CanDisplay8bpp();
 776                         if (!use_32bpp && !QZ_CanDisplay8bpp()) {
 777                                 /* The main display can't go to 8 bpp fullscreen mode.
 778                                  * We will have to switch to 32 bpp by default. */
 779                                 use_32bpp = true;
 780                         }
 781 #endif /* WITH_COCOA */
 782                         sel = use_32bpp ? "32bpp-anim" : "8bpp-optimized";
 783 #endif /* DEDICATED */
 784                         DEBUG(driver, 1, "Probing blitter %s", sel);
 785                 }
 786
 787                 const Blitter::Info *blitter = Blitter::find (sel);
 788                 if (blitter == NULL) {
 789                         assert (!autodetect);
 790                         usererror ("Failed to select requested blitter '%s'; does it exist?", sel);
 791                 }
 792                 Blitter::select (blitter);
 793         }
 794         free(blitter);
 795
 796         VideoDriver::SelectDriver ((videodriver != NULL) ? videodriver : VideoDriver::ini);
 797         free(videodriver);
 798
 799         NetworkStartUp(); // initialize network-core
 800
 801 #if defined(ENABLE_NETWORK)
 802         if (debuglog_conn != NULL && _network_available) {
 803                 const char *not_used = NULL;
 804                 const char *port = NULL;
 805                 uint16 rport;
 806
 807                 rport = NETWORK_DEFAULT_DEBUGLOG_PORT;
 808
 809                 ParseConnectionString(&not_used, &port, debuglog_conn);
 810                 if (port != NULL) rport = atoi(port);
 811
 812                 NetworkStartDebugLog(NetworkAddress(debuglog_conn, rport));
 813         }
 814 #endif /* ENABLE_NETWORK */
 815
 816         if (!HandleBootstrap()) {
 817                 ShutdownGame();
 818
 819                 goto exit_bootstrap;
 820         }
 821
 822         VideoDriver::GetActiveDriver()->ClaimMousePointer();
 823
 824         /* initialize screenshot formats */
 825         InitializeScreenshotFormats();
 826
 827         BaseSounds::FindSets();
 828         {
 829                 const char *sel = (sounds_set != NULL) ? sounds_set : BaseSounds::ini_set;
 830                 if (!BaseSounds::SetSet (sel)) {
 831                         if (StrEmpty (sel) || !BaseSounds::SetSet (NULL)) {
 832                                 usererror ("Failed to find a sounds set. Please acquire a sounds set for OpenTTD. See section 4.1 of readme.txt.");
 833                         } else {
 834                                 ErrorMessageData msg (STR_CONFIG_ERROR, STR_CONFIG_ERROR_INVALID_BASE_SOUNDS_NOT_FOUND);
 835                                 msg.SetDParamStr (0, sel);
 836                                 ScheduleErrorMessage (msg);
 837                         }
 838                 }
 839         }
 840         free(sounds_set);
 841
 842         BaseMusic::FindSets();
 843         {
 844                 const char *sel = (music_set != NULL) ? music_set : BaseMusic::ini_set;
 845                 if (!BaseMusic::SetSet (sel)) {
 846                         if (StrEmpty (sel) || !BaseMusic::SetSet (NULL)) {
 847                                 usererror ("Failed to find a music set. Please acquire a music set for OpenTTD. See section 4.1 of readme.txt.");
 848                         } else {
 849                                 ErrorMessageData msg (STR_CONFIG_ERROR, STR_CONFIG_ERROR_INVALID_BASE_MUSIC_NOT_FOUND);
 850                                 msg.SetDParamStr (0, sel);
 851                                 ScheduleErrorMessage (msg);
 852                         }
 853                 }
 854         }
 855         free(music_set);
 856
 857         SoundDriver::SelectDriver ((sounddriver != NULL) ? sounddriver : SoundDriver::ini);
 858         free(sounddriver);
 859
 860         MusicDriver::SelectDriver ((musicdriver != NULL) ? musicdriver : MusicDriver::ini);
 861         free(musicdriver);
 862
 863         /* Take our initial lock on whatever we might want to do! */
 864         _modal_progress_paint_mutex->BeginCritical();
 865         _modal_progress_work_mutex->BeginCritical();
 866
 867         GenerateWorld(GWM_EMPTY, 64, 64); // Make the viewport initialization happy
 868         WaitTillGeneratedWorld();
 869
 870         LoadIntroGame(false);
 871
 872         CheckForMissingGlyphs();
 873
 874         /* ScanNewGRFFiles now has control over the scanner. */
 875         ScanNewGRFFiles(scanner);
 876         scanner = NULL;
 877
 878         if (IsExperimentalSavegameVersion()) {
 879                 ErrorMessageData msg(STR_WARNING_EXPERIMENTAL_SAVEGAME_VERSION_1, STR_WARNING_EXPERIMENTAL_SAVEGAME_VERSION_2);
 880                 ScheduleErrorMessage(msg);
 881         }
 882
 883         VideoDriver::GetActiveDriver()->MainLoop();
 884
 885         WaitTillSaved();
 886
 887         /* only save config if we have to */
 888         if (save_config) {
 889                 SaveToConfig();
 890                 SaveHotkeysToConfig();
 891                 WindowDesc::SaveToConfig();
 892                 SaveToHighScore();
 893         }
 894
 895         /* Reset windowing system, stop drivers, free used memory, ... */
 896         ShutdownGame();
 897         goto exit_normal;
 898
 899 exit_noshutdown:
 900         /* These three are normally freed before bootstrap. */
 901         free(graphics_set);
 902         free(videodriver);
 903         free(blitter);
 904
 905 exit_bootstrap:
 906         /* These are normally freed before exit, but after bootstrap. */
 907         free(sounds_set);
 908         free(music_set);
 909         free(musicdriver);
 910         free(sounddriver);
 911
 912 exit_normal:
 913         free(BaseGraphics::ini_set);
 914         free(BaseSounds::ini_set);
 915         free(BaseMusic::ini_set);
 916
 917         free (MusicDriver::ini);
 918         free (SoundDriver::ini);
 919         free (VideoDriver::ini);
 920         free (Blitter::ini);
 921
 922         delete scanner;
 923
 924 #ifdef ENABLE_NETWORK
 925         extern FILE *_log_fd;
 926         if (_log_fd != NULL) {
 927                 fclose(_log_fd);
 928         }
 929 #endif /* ENABLE_NETWORK */
 930
 931         return ret;
 932 }
 933
 934 void HandleExitGameRequest()
 935 {
 936         if (_game_mode == GM_MENU || _game_mode == GM_BOOTSTRAP) { // do not ask to quit on the main screen
 937                 _exit_game = true;
 938         } else if (_settings_client.gui.autosave_on_exit) {
 939                 DoExitSave();
 940                 _exit_game = true;
 941         } else {
 942                 AskExitGame();
 943         }
 944 }
 945
 946 static void MakeNewGameDone()
 947 {
 948         SettingsDisableElrail(_settings_game.vehicle.disable_elrails);
 949
 950         /* In a dedicated server, the server does not play */
 951         if (!VideoDriver::GetActiveDriver()->HasGUI()) {
 952                 SetLocalCompany(COMPANY_SPECTATOR);
 953                 if (_settings_client.gui.pause_on_newgame) DoCommandP(0, PM_PAUSED_NORMAL, 1, CMD_PAUSE);
 954                 IConsoleCmdExec("exec scripts/game_start.scr 0");
 955                 return;
 956         }
 957
 958         /* Create a single company */
 959         DoStartupNewCompany(false);
 960
 961         Company *c = Company::Get(COMPANY_FIRST);
 962         c->settings = _settings_client.company;
 963
 964         IConsoleCmdExec("exec scripts/game_start.scr 0");
 965
 966         SetLocalCompany(COMPANY_FIRST);
 967
 968         InitializeRailGUI();
 969
 970 #ifdef ENABLE_NETWORK
 971         /* We are the server, we start a new company (not dedicated),
 972          * so set the default password *if* needed. */
 973         if (_network_server && !StrEmpty(_settings_client.network.default_company_pass)) {
 974                 NetworkChangeCompanyPassword(_local_company, _settings_client.network.default_company_pass);
 975         }
 976 #endif /* ENABLE_NETWORK */
 977
 978         if (_settings_client.gui.pause_on_newgame) DoCommandP(0, PM_PAUSED_NORMAL, 1, CMD_PAUSE);
 979
 980         CheckEngines();
 981         CheckIndustries();
 982         MarkWholeScreenDirty();
 983 }
 984
 985 static void MakeNewGame(bool from_heightmap, bool reset_settings)
 986 {
 987         _game_mode = GM_NORMAL;
 988
 989         ResetGRFConfig(true);
 990
 991         GenerateWorldSetCallback(&MakeNewGameDone);
 992         GenerateWorld(from_heightmap ? GWM_HEIGHTMAP : GWM_NEWGAME, 1 << _settings_game.game_creation.map_x, 1 << _settings_game.game_creation.map_y, reset_settings);
 993 }
 994
 995 static void MakeNewEditorWorldDone()
 996 {
 997         SetLocalCompany(OWNER_NONE);
 998 }
 999
1000 static void MakeNewEditorWorld()
1001 {
1002         _game_mode = GM_EDITOR;
1003
1004         ResetGRFConfig(true);
1005
1006         GenerateWorldSetCallback(&MakeNewEditorWorldDone);
1007         GenerateWorld(GWM_EMPTY, 1 << _settings_game.game_creation.map_x, 1 << _settings_game.game_creation.map_y);
1008 }
1009
1010 /**
1011  * Load the specified savegame but on error do different things.
1012  * If loading fails due to corrupt savegame, bad version, etc. go back to
1013  * a previous correct state. In the menu for example load the intro game again.
1014  * @param mode mode of loading, either SL_LOAD or SL_OLD_LOAD
1015  * @param newgm switch to this mode of loading fails due to some unknown error
1016  * @param filename file to be loaded
1017  * @param subdir default directory to look for filename, set to 0 if not needed
1018  * @param lf Load filter to use, if NULL: use filename + subdir.
1019  */
1020 bool SafeLoad (const char *filename, DetailedFileType dft, GameMode newgm, Subdirectory subdir, struct LoadFilter *lf = NULL)
1021 {
1022         assert(dft == DFT_GAME_FILE || (lf == NULL && dft == DFT_OLD_GAME_FILE));
1023         GameMode ogm = _game_mode;
1024
1025         _game_mode = newgm;
1026
1027         if (lf == NULL ? LoadGame (filename, false, dft == DFT_OLD_GAME_FILE, subdir) : LoadWithFilter (lf)) {
1028                 return true;
1029         } else {
1030 #ifdef ENABLE_NETWORK
1031                 if (_network_dedicated) {
1032                         /*
1033                          * We need to reinit a network map...
1034                          * We can't simply load the intro game here as that game has many
1035                          * special cases which make clients desync immediately. So we fall
1036                          * back to just generating a new game with the current settings.
1037                          */
1038                         DEBUG(net, 0, "Loading game failed, so a new (random) game will be started!");
1039                         MakeNewGame(false, true);
1040                         return false;
1041                 }
1042                 if (_network_server) {
1043                         /* We can't load the intro game as server, so disconnect first. */
1044                         NetworkDisconnect();
1045                 }
1046 #endif /* ENABLE_NETWORK */
1047
1048                 switch (ogm) {
1049                         default:
1050                         case GM_MENU:   LoadIntroGame();      break;
1051                         case GM_EDITOR: MakeNewEditorWorld(); break;
1052                 }
1053                 return false;
1054         }
1055 }
1056
1057 void SwitchToMode(SwitchMode new_mode)
1058 {
1059 #ifdef ENABLE_NETWORK
1060         /* If we are saving something, the network stays in his current state */
1061         if (new_mode != SM_SAVE_GAME) {
1062                 /* If the network is active, make it not-active */
1063                 if (_networking) {
1064                         if (_network_server && (new_mode == SM_LOAD_GAME || new_mode == SM_NEWGAME || new_mode == SM_RESTARTGAME)) {
1065                                 NetworkReboot();
1066                         } else {
1067                                 NetworkDisconnect();
1068                         }
1069                 }
1070
1071                 /* If we are a server, we restart the server */
1072                 if (_is_network_server) {
1073                         /* But not if we are going to the menu */
1074                         if (new_mode != SM_MENU) {
1075                                 /* check if we should reload the config */
1076                                 if (_settings_client.network.reload_cfg) {
1077                                         LoadFromConfig();
1078                                         MakeNewgameSettingsLive();
1079                                         ResetGRFConfig(false);
1080                                 }
1081                                 NetworkServerStart();
1082                         } else {
1083                                 /* This client no longer wants to be a network-server */
1084                                 _is_network_server = false;
1085                         }
1086                 }
1087         }
1088 #endif /* ENABLE_NETWORK */
1089         /* Make sure all AI controllers are gone at quitting game */
1090         if (new_mode != SM_SAVE_GAME) AI::KillAll();
1091
1092         switch (new_mode) {
1093                 case SM_EDITOR: // Switch to scenario editor
1094                         MakeNewEditorWorld();
1095                         break;
1096
1097                 case SM_RESTARTGAME: // Restart --> 'Random game' with current settings
1098                 case SM_NEWGAME: // New Game --> 'Random game'
1099 #ifdef ENABLE_NETWORK
1100                         if (_network_server) {
1101                                 bstrcpy (_network_game_info.map_name, "Random Map");
1102                         }
1103 #endif /* ENABLE_NETWORK */
1104                         MakeNewGame(false, new_mode == SM_NEWGAME);
1105                         break;
1106
1107                 case SM_LOAD_GAME: { // Load game, Play Scenario
1108                         ResetGRFConfig(true);
1109                         ResetWindowSystem();
1110
1111                         assert (_file_to_saveload.file_op == SLO_LOAD);
1112                         if (!SafeLoad (_file_to_saveload.name, _file_to_saveload.detail_ftype, GM_NORMAL, NO_DIRECTORY)) {
1113                                 ShowSaveLoadErrorMessage (false);
1114                         } else {
1115                                 if (_file_to_saveload.abstract_ftype == FT_SCENARIO) {
1116                                         /* Reset engine pool to simplify changing engine NewGRFs in scenario editor. */
1117                                         EngineOverrideManager::ResetToCurrentNewGRFConfig();
1118                                 }
1119                                 /* Update the local company for a loaded game. It is either always
1120                                  * company #1 (eg 0) or in the case of a dedicated server a spectator */
1121                                 SetLocalCompany(_network_dedicated ? COMPANY_SPECTATOR : COMPANY_FIRST);
1122                                 /* Execute the game-start script */
1123                                 IConsoleCmdExec("exec scripts/game_start.scr 0");
1124                                 /* Decrease pause counter (was increased from opening load dialog) */
1125                                 DoCommandP(0, PM_PAUSED_SAVELOAD, 0, CMD_PAUSE);
1126 #ifdef ENABLE_NETWORK
1127                                 if (_network_server) {
1128                                         bstrfmt (_network_game_info.map_name, "%s (Loaded game)", _file_to_saveload.title);
1129                                 }
1130 #endif /* ENABLE_NETWORK */
1131                         }
1132                         break;
1133                 }
1134
1135                 case SM_START_HEIGHTMAP: // Load a heightmap and start a new game from it
1136 #ifdef ENABLE_NETWORK
1137                         if (_network_server) {
1138                                 bstrfmt (_network_game_info.map_name, "%s (Heightmap)", _file_to_saveload.title);
1139                         }
1140 #endif /* ENABLE_NETWORK */
1141                         MakeNewGame(true, true);
1142                         break;
1143
1144                 case SM_LOAD_HEIGHTMAP: // Load heightmap from scenario editor
1145                         SetLocalCompany(OWNER_NONE);
1146
1147                         GenerateWorld(GWM_HEIGHTMAP, 1 << _settings_game.game_creation.map_x, 1 << _settings_game.game_creation.map_y);
1148                         MarkWholeScreenDirty();
1149                         break;
1150
1151                 case SM_LOAD_SCENARIO: { // Load scenario from scenario editor
1152                         assert (_file_to_saveload.file_op == SLO_LOAD);
1153                         if (SafeLoad (_file_to_saveload.name, _file_to_saveload.detail_ftype, GM_EDITOR, NO_DIRECTORY)) {
1154                                 SetLocalCompany(OWNER_NONE);
1155                                 _settings_newgame.game_creation.starting_year = _cur_year;
1156                                 /* Cancel the saveload pausing */
1157                                 DoCommandP(0, PM_PAUSED_SAVELOAD, 0, CMD_PAUSE);
1158                         } else {
1159                                 ShowSaveLoadErrorMessage (false);
1160                         }
1161                         break;
1162                 }
1163
1164                 case SM_MENU: // Switch to game intro menu
1165                         LoadIntroGame();
1166                         if (BaseSounds::ini_set == NULL && BaseSounds::GetUsedSet()->fallback) {
1167                                 ShowErrorMessage(STR_WARNING_FALLBACK_SOUNDSET, INVALID_STRING_ID, WL_CRITICAL);
1168                                 BaseSounds::ini_set = xstrdup(BaseSounds::GetUsedSet()->get_name());
1169                         }
1170                         break;
1171
1172                 case SM_SAVE_GAME: // Save game.
1173                         /* Make network saved games on pause compatible to singleplayer */
1174                         if (!SaveGame(_file_to_saveload.name, NO_DIRECTORY)) {
1175                                 ShowSaveLoadErrorMessage (true);
1176                         } else {
1177                                 DeleteWindowById(WC_SAVELOAD, 0);
1178                         }
1179                         break;
1180
1181                 case SM_SAVE_HEIGHTMAP: // Save heightmap.
1182                         MakeHeightmapScreenshot(_file_to_saveload.name);
1183                         DeleteWindowById(WC_SAVELOAD, 0);
1184                         break;
1185
1186                 case SM_GENRANDLAND: // Generate random land within scenario editor
1187                         SetLocalCompany(OWNER_NONE);
1188                         GenerateWorld(GWM_RANDOM, 1 << _settings_game.game_creation.map_x, 1 << _settings_game.game_creation.map_y);
1189                         /* XXX: set date */
1190                         MarkWholeScreenDirty();
1191                         break;
1192
1193                 default: NOT_REACHED();
1194         }
1195 }
1196
1197
1198 /**
1199  * Check the validity of some of the caches.
1200  * Especially in the sense of desyncs between
1201  * the cached value and what the value would
1202  * be when calculated from the 'base' data.
1203  */
1204 static void CheckCaches()
1205 {
1206         /* Return here so it is easy to add checks that are run
1207          * always to aid testing of caches. */
1208         if (_debug_desync_level <= 1) return;
1209
1210         /* Check the town caches. */
1211         SmallVector<TownCache, 4> old_town_caches;
1212         Town *t;
1213         FOR_ALL_TOWNS(t) {
1214                 MemCpyT(old_town_caches.Append(), &t->cache);
1215         }
1216
1217         extern void RebuildTownCaches();
1218         RebuildTownCaches();
1219         RebuildSubsidisedSourceAndDestinationCache();
1220
1221         uint i = 0;
1222         FOR_ALL_TOWNS(t) {
1223                 if (MemCmpT(old_town_caches.Get(i), &t->cache) != 0) {
1224                         DEBUG(desync, 2, "town cache mismatch: town %i", (int)t->index);
1225                 }
1226                 i++;
1227         }
1228
1229         /* Check company infrastructure cache. */
1230         SmallVector<CompanyInfrastructure, 4> old_infrastructure;
1231         Company *c;
1232         FOR_ALL_COMPANIES(c) MemCpyT(old_infrastructure.Append(), &c->infrastructure);
1233
1234         extern void AfterLoadCompanyStats();
1235         AfterLoadCompanyStats();
1236
1237         i = 0;
1238         FOR_ALL_COMPANIES(c) {
1239                 if (MemCmpT(old_infrastructure.Get(i), &c->infrastructure) != 0) {
1240                         DEBUG(desync, 2, "infrastructure cache mismatch: company %i", (int)c->index);
1241                 }
1242                 i++;
1243         }
1244
1245         /* Strict checking of the road stop cache entries */
1246         const RoadStop *rs;
1247         FOR_ALL_ROADSTOPS(rs) {
1248                 if (!IsStandardRoadStopTile(rs->xy)) rs->CheckIntegrity();
1249         }
1250
1251         Vehicle *v;
1252         FOR_ALL_VEHICLES(v) {
1253                 extern void FillNewGRFVehicleCache(const Vehicle *v);
1254                 if (v != v->First() || v->vehstatus & VS_CRASHED || !v->IsPrimaryVehicle()) continue;
1255
1256                 uint length = 0;
1257                 for (const Vehicle *u = v; u != NULL; u = u->Next()) length++;
1258
1259                 NewGRFCache        *grf_cache = xcalloct<NewGRFCache>(length);
1260                 VehicleCache       *veh_cache = xcalloct<VehicleCache>(length);
1261                 GroundVehicleCache *gro_cache = xcalloct<GroundVehicleCache>(length);
1262                 TrainCache         *tra_cache = xcalloct<TrainCache>(length);
1263
1264                 length = 0;
1265                 for (const Vehicle *u = v; u != NULL; u = u->Next()) {
1266                         FillNewGRFVehicleCache(u);
1267                         grf_cache[length] = u->grf_cache;
1268                         veh_cache[length] = u->vcache;
1269                         switch (u->type) {
1270                                 case VEH_TRAIN:
1271                                         gro_cache[length] = Train::From(u)->gcache;
1272                                         tra_cache[length] = Train::From(u)->tcache;
1273                                         break;
1274                                 case VEH_ROAD:
1275                                         gro_cache[length] = RoadVehicle::From(u)->gcache;
1276                                         break;
1277                                 default:
1278                                         break;
1279                         }
1280                         length++;
1281                 }
1282
1283                 switch (v->type) {
1284                         case VEH_TRAIN:    Train::From(v)->ConsistChanged(CCF_TRACK); break;
1285                         case VEH_ROAD:     RoadVehUpdateCache(RoadVehicle::From(v)); break;
1286                         case VEH_AIRCRAFT: UpdateAircraftCache(Aircraft::From(v));   break;
1287                         case VEH_SHIP:     Ship::From(v)->UpdateCache();             break;
1288                         default: break;
1289                 }
1290
1291                 length = 0;
1292                 for (const Vehicle *u = v; u != NULL; u = u->Next()) {
1293                         FillNewGRFVehicleCache(u);
1294                         if (memcmp(&grf_cache[length], &u->grf_cache, sizeof(NewGRFCache)) != 0) {
1295                                 DEBUG(desync, 2, "newgrf cache mismatch: type %i, vehicle %i, company %i, unit number %i, wagon %i", (int)v->type, v->index, (int)v->owner, v->unitnumber, length);
1296                         }
1297                         if (memcmp(&veh_cache[length], &u->vcache, sizeof(VehicleCache)) != 0) {
1298                                 DEBUG(desync, 2, "vehicle cache mismatch: type %i, vehicle %i, company %i, unit number %i, wagon %i", (int)v->type, v->index, (int)v->owner, v->unitnumber, length);
1299                         }
1300                         switch (u->type) {
1301                                 case VEH_TRAIN:
1302                                         if (memcmp(&gro_cache[length], &Train::From(u)->gcache, sizeof(GroundVehicleCache)) != 0) {
1303                                                 DEBUG(desync, 2, "train ground vehicle cache mismatch: vehicle %i, company %i, unit number %i, wagon %i", v->index, (int)v->owner, v->unitnumber, length);
1304                                         }
1305                                         if (memcmp(&tra_cache[length], &Train::From(u)->tcache, sizeof(TrainCache)) != 0) {
1306                                                 DEBUG(desync, 2, "train cache mismatch: vehicle %i, company %i, unit number %i, wagon %i", v->index, (int)v->owner, v->unitnumber, length);
1307                                         }
1308                                         break;
1309                                 case VEH_ROAD:
1310                                         if (memcmp(&gro_cache[length], &RoadVehicle::From(u)->gcache, sizeof(GroundVehicleCache)) != 0) {
1311                                                 DEBUG(desync, 2, "road vehicle ground vehicle cache mismatch: vehicle %i, company %i, unit number %i, wagon %i", v->index, (int)v->owner, v->unitnumber, length);
1312                                         }
1313                                         break;
1314                                 default:
1315                                         break;
1316                         }
1317                         length++;
1318                 }
1319
1320                 free(grf_cache);
1321                 free(veh_cache);
1322                 free(gro_cache);
1323                 free(tra_cache);
1324         }
1325
1326         /* Check whether the caches are still valid */
1327         FOR_ALL_VEHICLES(v) {
1328                 byte buff[sizeof(VehicleCargoList)];
1329                 memcpy(buff, &v->cargo, sizeof(VehicleCargoList));
1330                 v->cargo.InvalidateCache();
1331                 assert(memcmp(&v->cargo, buff, sizeof(VehicleCargoList)) == 0);
1332         }
1333
1334         Station *st;
1335         FOR_ALL_STATIONS(st) {
1336                 for (CargoID c = 0; c < NUM_CARGO; c++) {
1337                         byte buff[sizeof(StationCargoList)];
1338                         memcpy(buff, &st->goods[c].cargo, sizeof(StationCargoList));
1339                         st->goods[c].cargo.InvalidateCache();
1340                         assert(memcmp(&st->goods[c].cargo, buff, sizeof(StationCargoList)) == 0);
1341                 }
1342         }
1343 }
1344
1345 /**
1346  * State controlling game loop.
1347  * The state must not be changed from anywhere but here.
1348  * That check is enforced in DoCommand.
1349  */
1350 void StateGameLoop()
1351 {
1352         /* don't execute the state loop during pause */
1353         if (_pause_mode != PM_UNPAUSED) {
1354                 UpdateLandscapingLimits();
1355 #ifndef DEBUG_DUMP_COMMANDS
1356                 Game::GameLoop();
1357 #endif
1358                 CallWindowTickEvent();
1359                 return;
1360         }
1361         if (HasModalProgress()) return;
1362
1363         Layouter::ReduceLineCache();
1364
1365         if (_game_mode == GM_EDITOR) {
1366                 BasePersistentStorageArray::SwitchMode(PSM_ENTER_GAMELOOP);
1367                 RunTileLoop();
1368                 CallVehicleTicks();
1369                 CallLandscapeTick();
1370                 BasePersistentStorageArray::SwitchMode(PSM_LEAVE_GAMELOOP);
1371                 UpdateLandscapingLimits();
1372
1373                 CallWindowTickEvent();
1374                 NewsLoop();
1375         } else {
1376                 if (_debug_desync_level > 2 && _date_fract == 0 && (_date & 0x1F) == 0) {
1377                         /* Save the desync savegame if needed. */
1378                         char name[MAX_PATH];
1379                         bstrfmt (name, "dmp_cmds_%08x_%08x.sav", _settings_game.game_creation.generation_seed, _date);
1380                         SaveGame(name, AUTOSAVE_DIR, false);
1381                 }
1382
1383                 CheckCaches();
1384
1385                 /* All these actions has to be done from OWNER_NONE
1386                  *  for multiplayer compatibility */
1387                 Backup<CompanyByte> cur_company(_current_company, OWNER_NONE, FILE_LINE);
1388
1389                 BasePersistentStorageArray::SwitchMode(PSM_ENTER_GAMELOOP);
1390                 AnimateAnimatedTiles();
1391                 IncreaseDate();
1392                 RunTileLoop();
1393                 CallVehicleTicks();
1394                 CallLandscapeTick();
1395                 BasePersistentStorageArray::SwitchMode(PSM_LEAVE_GAMELOOP);
1396
1397 #ifndef DEBUG_DUMP_COMMANDS
1398                 AI::GameLoop();
1399                 Game::GameLoop();
1400 #endif
1401                 UpdateLandscapingLimits();
1402
1403                 CallWindowTickEvent();
1404                 NewsLoop();
1405                 cur_company.Restore();
1406         }
1407
1408         assert(IsLocalCompany());
1409 }
1410
1411 /**
1412  * Create an autosave. The default name is "autosave#.sav". However with
1413  * the setting 'keep_all_autosave' the name defaults to company-name + date
1414  */
1415 static void DoAutosave()
1416 {
1417         sstring<MAX_PATH> buf;
1418
1419 #if defined(PSP)
1420         /* Autosaving in networking is too time expensive for the PSP */
1421         if (_networking) return;
1422 #endif /* PSP */
1423
1424         if (_settings_client.gui.keep_all_autosave) {
1425                 GenerateDefaultSaveName (&buf);
1426                 buf.append (".sav");
1427         } else {
1428                 static int _autosave_ctr = 0;
1429
1430                 /* generate a savegame name and number according to _settings_client.gui.max_num_autosaves */
1431                 buf.fmt ("autosave%d.sav", _autosave_ctr);
1432
1433                 if (++_autosave_ctr >= _settings_client.gui.max_num_autosaves) _autosave_ctr = 0;
1434         }
1435
1436         DEBUG(sl, 2, "Autosaving to '%s'", buf.c_str());
1437         if (!SaveGame(buf.c_str(), AUTOSAVE_DIR)) {
1438                 ShowErrorMessage(STR_ERROR_AUTOSAVE_FAILED, INVALID_STRING_ID, WL_ERROR);
1439         }
1440 }
1441
1442 void GameLoop()
1443 {
1444         if (_game_mode == GM_BOOTSTRAP) {
1445 #ifdef ENABLE_NETWORK
1446                 /* Check for UDP stuff */
1447                 if (_network_available) NetworkBackgroundLoop();
1448 #endif
1449                 InputLoop();
1450                 return;
1451         }
1452
1453         ProcessAsyncSaveFinish();
1454
1455         /* autosave game? */
1456         if (_do_autosave) {
1457                 DoAutosave();
1458                 _do_autosave = false;
1459                 SetWindowDirty(WC_STATUS_BAR, 0);
1460         }
1461
1462         /* switch game mode? */
1463         if (_switch_mode != SM_NONE && !HasModalProgress()) {
1464                 SwitchToMode(_switch_mode);
1465                 _switch_mode = SM_NONE;
1466         }
1467
1468         IncreaseSpriteLRU();
1469         InteractiveRandom();
1470
1471         extern int _caret_timer;
1472         _caret_timer += 3;
1473         CursorTick();
1474
1475 #ifdef ENABLE_NETWORK
1476         /* Check for UDP stuff */
1477         if (_network_available) NetworkBackgroundLoop();
1478
1479         if (_networking && !HasModalProgress()) {
1480                 /* Multiplayer */
1481                 NetworkGameLoop();
1482         } else {
1483                 if (_network_reconnect > 0 && --_network_reconnect == 0) {
1484                         /* This means that we want to reconnect to the last host
1485                          * We do this here, because it means that the network is really closed */
1486                         NetworkClientConnectGame(NetworkAddress(_settings_client.network.last_host, _settings_client.network.last_port), COMPANY_SPECTATOR);
1487                 }
1488                 /* Singleplayer */
1489                 StateGameLoop();
1490         }
1491
1492         /* Check chat messages roughly once a second. */
1493         static uint check_message = 0;
1494         if (++check_message > 1000 / MILLISECONDS_PER_TICK) {
1495                 check_message = 0;
1496                 NetworkChatMessageLoop();
1497         }
1498 #else
1499         StateGameLoop();
1500 #endif /* ENABLE_NETWORK */
1501
1502         if (!_pause_mode && HasBit(_display_opt, DO_FULL_ANIMATION)) DoPaletteAnimations();
1503
1504         if (!_pause_mode || _game_mode == GM_EDITOR || _settings_game.construction.command_pause_level > CMDPL_NO_CONSTRUCTION) MoveAllTextEffects();
1505
1506         InputLoop();
1507
1508         SoundDriver::GetActiveDriver()->MainLoop();
1509         MusicLoop();
1510 }