src/client/clientlauncher.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "main.h"
  21 #include "mainmenumanager.h"
  22 #include "debug.h"
  23 #include "clouds.h"
  24 #include "server.h"
  25 #include "filesys.h"
  26 #include "guiMainMenu.h"
  27 #include "game.h"
  28 #include "chat.h"
  29 #include "gettext.h"
  30 #include "profiler.h"
  31 #include "log.h"
  32 #include "serverlist.h"
  33 #include "guiEngine.h"
  34 #include "player.h"
  35 #include "fontengine.h"
  36 #include "clientlauncher.h"
  37
  38 // A pointer to a global instance of the time getter
  39 // TODO: why?
  40 TimeGetter *g_timegetter = NULL;
  41
  42 u32 getTimeMs()
  43 {
  44         if (g_timegetter == NULL)
  45                 return 0;
  46         return g_timegetter->getTime(PRECISION_MILLI);
  47 }
  48
  49 u32 getTime(TimePrecision prec) {
  50         if (g_timegetter == NULL)
  51                 return 0;
  52         return g_timegetter->getTime(prec);
  53 }
  54
  55 ClientLauncher::~ClientLauncher()
  56 {
  57         if (receiver)
  58                 delete receiver;
  59
  60         if (input)
  61                 delete input;
  62
  63         if (g_fontengine)
  64                 delete g_fontengine;
  65
  66         if (device)
  67                 device->drop();
  68 }
  69
  70
  71 bool ClientLauncher::run(GameParams &game_params, const Settings &cmd_args)
  72 {
  73         init_args(game_params, cmd_args);
  74
  75         // List video modes if requested
  76         if (list_video_modes)
  77                 return print_video_modes();
  78
  79         if (!init_engine(game_params.log_level)) {
  80                 errorstream << "Could not initialize game engine." << std::endl;
  81                 return false;
  82         }
  83
  84         // Speed tests (done after irrlicht is loaded to get timer)
  85         if (cmd_args.getFlag("speedtests")) {
  86                 dstream << "Running speed tests" << std::endl;
  87                 speed_tests();
  88                 return true;
  89         }
  90
  91         video::IVideoDriver *video_driver = device->getVideoDriver();
  92         if (video_driver == NULL) {
  93                 errorstream << "Could not initialize video driver." << std::endl;
  94                 return false;
  95         }
  96
  97         porting::setXorgClassHint(video_driver->getExposedVideoData(), "Minetest");
  98
  99         /*
 100                 This changes the minimum allowed number of vertices in a VBO.
 101                 Default is 500.
 102         */
 103         //driver->setMinHardwareBufferVertexCount(50);
 104
 105         // Create time getter
 106         g_timegetter = new IrrlichtTimeGetter(device);
 107
 108         // Create game callback for menus
 109         g_gamecallback = new MainGameCallback(device);
 110
 111         device->setResizable(true);
 112
 113         if (random_input)
 114                 input = new RandomInputHandler();
 115         else
 116                 input = new RealInputHandler(device, receiver);
 117
 118         smgr = device->getSceneManager();
 119
 120         guienv = device->getGUIEnvironment();
 121         skin = guienv->getSkin();
 122         skin->setColor(gui::EGDC_BUTTON_TEXT, video::SColor(255, 255, 255, 255));
 123         skin->setColor(gui::EGDC_3D_LIGHT, video::SColor(0, 0, 0, 0));
 124         skin->setColor(gui::EGDC_3D_HIGH_LIGHT, video::SColor(255, 30, 30, 30));
 125         skin->setColor(gui::EGDC_3D_SHADOW, video::SColor(255, 0, 0, 0));
 126         skin->setColor(gui::EGDC_HIGH_LIGHT, video::SColor(255, 70, 120, 50));
 127         skin->setColor(gui::EGDC_HIGH_LIGHT_TEXT, video::SColor(255, 255, 255, 255));
 128
 129         g_fontengine = new FontEngine(g_settings, guienv);
 130         assert(g_fontengine != NULL);
 131
 132 #if (IRRLICHT_VERSION_MAJOR >= 1 && IRRLICHT_VERSION_MINOR >= 8) || IRRLICHT_VERSION_MAJOR >= 2
 133         // Irrlicht 1.8 input colours
 134         skin->setColor(gui::EGDC_EDITABLE, video::SColor(255, 128, 128, 128));
 135         skin->setColor(gui::EGDC_FOCUSED_EDITABLE, video::SColor(255, 96, 134, 49));
 136 #endif
 137
 138         // Create the menu clouds
 139         if (!g_menucloudsmgr)
 140                 g_menucloudsmgr = smgr->createNewSceneManager();
 141         if (!g_menuclouds)
 142                 g_menuclouds = new Clouds(g_menucloudsmgr->getRootSceneNode(),
 143                                 g_menucloudsmgr, -1, rand(), 100);
 144         g_menuclouds->update(v2f(0, 0), video::SColor(255, 200, 200, 255));
 145         scene::ICameraSceneNode* camera;
 146         camera = g_menucloudsmgr->addCameraSceneNode(0,
 147                                 v3f(0, 0, 0), v3f(0, 60, 100));
 148         camera->setFarValue(10000);
 149
 150         /*
 151                 GUI stuff
 152         */
 153
 154         ChatBackend chat_backend;
 155
 156         // If an error occurs, this is set to something by menu().
 157         // It is then displayed before  the menu shows on the next call to menu()
 158         std::wstring error_message = L"";
 159
 160         bool first_loop = true;
 161
 162         /*
 163                 Menu-game loop
 164         */
 165         bool retval = true;
 166         bool *kill = porting::signal_handler_killstatus();
 167
 168         while (device->run() && !*kill && !g_gamecallback->shutdown_requested)
 169         {
 170                 // Set the window caption
 171                 const wchar_t *text = wgettext("Main Menu");
 172                 device->setWindowCaption((std::wstring(L"Minetest [") + text + L"]").c_str());
 173                 delete[] text;
 174
 175                 try {   // This is used for catching disconnects
 176
 177                         guienv->clear();
 178
 179                         /*
 180                                 We need some kind of a root node to be able to add
 181                                 custom gui elements directly on the screen.
 182                                 Otherwise they won't be automatically drawn.
 183                         */
 184                         guiroot = guienv->addStaticText(L"", core::rect<s32>(0, 0, 10000, 10000));
 185
 186                         bool game_has_run = launch_game(&error_message, game_params, cmd_args);
 187
 188                         // If skip_main_menu, we only want to startup once
 189                         if (skip_main_menu && !first_loop)
 190                                 break;
 191
 192                         first_loop = false;
 193
 194                         if (!game_has_run) {
 195                                 if (skip_main_menu)
 196                                         break;
 197                                 else
 198                                         continue;
 199                         }
 200
 201                         // Break out of menu-game loop to shut down cleanly
 202                         if (!device->run() || *kill) {
 203                                 if (g_settings_path != "")
 204                                         g_settings->updateConfigFile(g_settings_path.c_str());
 205                                 break;
 206                         }
 207
 208                         if (current_playername.length() > PLAYERNAME_SIZE-1) {
 209                                 error_message = wgettext("Player name too long.");
 210                                 playername = current_playername.substr(0, PLAYERNAME_SIZE-1);
 211                                 g_settings->set("name", playername);
 212                                 continue;
 213                         }
 214
 215                         device->getVideoDriver()->setTextureCreationFlag(
 216                                         video::ETCF_CREATE_MIP_MAPS, g_settings->getBool("mip_map"));
 217
 218 #ifdef HAVE_TOUCHSCREENGUI
 219                         receiver->m_touchscreengui = new TouchScreenGUI(device, receiver);
 220                         g_touchscreengui = receiver->m_touchscreengui;
 221 #endif
 222                         the_game(
 223                                 kill,
 224                                 random_input,
 225                                 input,
 226                                 device,
 227                                 worldspec.path,
 228                                 current_playername,
 229                                 current_password,
 230                                 current_address,
 231                                 current_port,
 232                                 error_message,
 233                                 chat_backend,
 234                                 gamespec,
 235                                 simple_singleplayer_mode
 236                         );
 237                         smgr->clear();
 238
 239 #ifdef HAVE_TOUCHSCREENGUI
 240                         delete g_touchscreengui;
 241                         g_touchscreengui = NULL;
 242                         receiver->m_touchscreengui = NULL;
 243 #endif
 244
 245                 } //try
 246                 catch (con::PeerNotFoundException &e) {
 247                         error_message = wgettext("Connection error (timed out?)");
 248                         errorstream << wide_to_narrow(error_message) << std::endl;
 249                 }
 250
 251 #ifdef NDEBUG
 252                 catch (std::exception &e) {
 253                         std::string narrow_message = "Some exception: \"";
 254                         narrow_message += e.what();
 255                         narrow_message += "\"";
 256                         errorstream << narrow_message << std::endl;
 257                         error_message = narrow_to_wide(narrow_message);
 258                 }
 259 #endif
 260
 261                 // If no main menu, show error and exit
 262                 if (skip_main_menu) {
 263                         if (error_message != L"") {
 264                                 verbosestream << "error_message = "
 265                                               << wide_to_narrow(error_message) << std::endl;
 266                                 retval = false;
 267                         }
 268                         break;
 269                 }
 270         } // Menu-game loop
 271
 272         g_menuclouds->drop();
 273         g_menucloudsmgr->drop();
 274
 275         return retval;
 276 }
 277
 278 void ClientLauncher::init_args(GameParams &game_params, const Settings &cmd_args)
 279 {
 280
 281         skip_main_menu = cmd_args.getFlag("go");
 282
 283         // FIXME: This is confusing (but correct)
 284
 285         /* If world_path is set then override it unless skipping the main menu using
 286          * the --go command line param. Else, give preference to the address
 287          * supplied on the command line
 288          */
 289         address = g_settings->get("address");
 290         if (game_params.world_path != "" && !skip_main_menu)
 291                 address = "";
 292         else if (cmd_args.exists("address"))
 293                 address = cmd_args.get("address");
 294
 295         playername = g_settings->get("name");
 296         if (cmd_args.exists("name"))
 297                 playername = cmd_args.get("name");
 298
 299         list_video_modes = cmd_args.getFlag("videomodes");
 300
 301         use_freetype = g_settings->getBool("freetype");
 302
 303         random_input = g_settings->getBool("random_input")
 304                         || cmd_args.getFlag("random-input");
 305 }
 306
 307 bool ClientLauncher::init_engine(int log_level)
 308 {
 309         receiver = new MyEventReceiver();
 310         create_engine_device(log_level);
 311         return device != NULL;
 312 }
 313
 314 bool ClientLauncher::launch_game(std::wstring *error_message,
 315                 GameParams &game_params, const Settings &cmd_args)
 316 {
 317         // Initialize menu data
 318         MainMenuData menudata;
 319         menudata.address      = address;
 320         menudata.name         = playername;
 321         menudata.port         = itos(game_params.socket_port);
 322         menudata.errormessage = wide_to_narrow(*error_message);
 323
 324         *error_message = L"";
 325
 326         if (cmd_args.exists("password"))
 327                 menudata.password = cmd_args.get("password");
 328
 329         menudata.enable_public = g_settings->getBool("server_announce");
 330
 331         // If a world was commanded, append and select it
 332         if (game_params.world_path != "") {
 333                 worldspec.gameid = getWorldGameId(game_params.world_path, true);
 334                 worldspec.name = _("[--world parameter]");
 335
 336                 if (worldspec.gameid == "") {   // Create new
 337                         worldspec.gameid = g_settings->get("default_game");
 338                         worldspec.name += " [new]";
 339                 }
 340                 worldspec.path = game_params.world_path;
 341         }
 342
 343         /* Show the GUI menu
 344          */
 345         if (!skip_main_menu) {
 346                 main_menu(&menudata);
 347
 348                 // Skip further loading if there was an exit signal.
 349                 if (*porting::signal_handler_killstatus())
 350                         return false;
 351
 352                 address = menudata.address;
 353                 int newport = stoi(menudata.port);
 354                 if (newport != 0)
 355                         game_params.socket_port = newport;
 356
 357                 simple_singleplayer_mode = menudata.simple_singleplayer_mode;
 358
 359                 std::vector<WorldSpec> worldspecs = getAvailableWorlds();
 360
 361                 if (menudata.selected_world >= 0
 362                                 && menudata.selected_world < (int)worldspecs.size()) {
 363                         g_settings->set("selected_world_path",
 364                                         worldspecs[menudata.selected_world].path);
 365                         worldspec = worldspecs[menudata.selected_world];
 366                 }
 367         }
 368
 369         if (menudata.errormessage != "") {
 370                 /* The calling function will pass this back into this function upon the
 371                  * next iteration (if any) causing it to be displayed by the GUI
 372                  */
 373                 *error_message = narrow_to_wide(menudata.errormessage);
 374                 return false;
 375         }
 376
 377         if (menudata.name == "")
 378                 menudata.name = std::string("Guest") + itos(myrand_range(1000, 9999));
 379         else
 380                 playername = menudata.name;
 381
 382         password = translatePassword(playername, narrow_to_wide(menudata.password));
 383
 384         g_settings->set("name", playername);
 385
 386         current_playername = playername;
 387         current_password   = password;
 388         current_address    = address;
 389         current_port       = game_params.socket_port;
 390
 391         // If using simple singleplayer mode, override
 392         if (simple_singleplayer_mode) {
 393                 assert(skip_main_menu == false);
 394                 current_playername = "singleplayer";
 395                 current_password = "";
 396                 current_address = "";
 397                 current_port = myrand_range(49152, 65535);
 398         } else if (address != "") {
 399                 ServerListSpec server;
 400                 server["name"] = menudata.servername;
 401                 server["address"] = menudata.address;
 402                 server["port"] = menudata.port;
 403                 server["description"] = menudata.serverdescription;
 404                 ServerList::insert(server);
 405         }
 406
 407         infostream << "Selected world: " << worldspec.name
 408                    << " [" << worldspec.path << "]" << std::endl;
 409
 410         if (current_address == "") { // If local game
 411                 if (worldspec.path == "") {
 412                         *error_message = wgettext("No world selected and no address "
 413                                         "provided. Nothing to do.");
 414                         errorstream << wide_to_narrow(*error_message) << std::endl;
 415                         return false;
 416                 }
 417
 418                 if (!fs::PathExists(worldspec.path)) {
 419                         *error_message = wgettext("Provided world path doesn't exist: ")
 420                                         + narrow_to_wide(worldspec.path);
 421                         errorstream << wide_to_narrow(*error_message) << std::endl;
 422                         return false;
 423                 }
 424
 425                 // Load gamespec for required game
 426                 gamespec = findWorldSubgame(worldspec.path);
 427                 if (!gamespec.isValid() && !game_params.game_spec.isValid()) {
 428                         *error_message = wgettext("Could not find or load game \"")
 429                                         + narrow_to_wide(worldspec.gameid) + L"\"";
 430                         errorstream << wide_to_narrow(*error_message) << std::endl;
 431                         return false;
 432                 }
 433
 434                 if (porting::signal_handler_killstatus())
 435                         return true;
 436
 437                 if (game_params.game_spec.isValid() &&
 438                                 game_params.game_spec.id != worldspec.gameid) {
 439                         errorstream << "WARNING: Overriding gamespec from \""
 440                                     << worldspec.gameid << "\" to \""
 441                                     << game_params.game_spec.id << "\"" << std::endl;
 442                         gamespec = game_params.game_spec;
 443                 }
 444
 445                 if (!gamespec.isValid()) {
 446                         *error_message = wgettext("Invalid gamespec.");
 447                         *error_message += L" (world_gameid="
 448                                         + narrow_to_wide(worldspec.gameid) + L")";
 449                         errorstream << wide_to_narrow(*error_message) << std::endl;
 450                         return false;
 451                 }
 452         }
 453
 454         return true;
 455 }
 456
 457 void ClientLauncher::main_menu(MainMenuData *menudata)
 458 {
 459         bool *kill = porting::signal_handler_killstatus();
 460         video::IVideoDriver *driver = device->getVideoDriver();
 461
 462         infostream << "Waiting for other menus" << std::endl;
 463         while (device->run() && *kill == false) {
 464                 if (noMenuActive())
 465                         break;
 466                 driver->beginScene(true, true, video::SColor(255, 128, 128, 128));
 467                 guienv->drawAll();
 468                 driver->endScene();
 469                 // On some computers framerate doesn't seem to be automatically limited
 470                 sleep_ms(25);
 471         }
 472         infostream << "Waited for other menus" << std::endl;
 473
 474         // Cursor can be non-visible when coming from the game
 475 #ifndef ANDROID
 476         device->getCursorControl()->setVisible(true);
 477 #endif
 478
 479         /* show main menu */
 480         GUIEngine mymenu(device, guiroot, &g_menumgr, smgr, menudata, *kill);
 481
 482         smgr->clear();  /* leave scene manager in a clean state */
 483 }
 484
 485 bool ClientLauncher::create_engine_device(int log_level)
 486 {
 487         static const irr::ELOG_LEVEL irr_log_level[5] = {
 488                 ELL_NONE,
 489                 ELL_ERROR,
 490                 ELL_WARNING,
 491                 ELL_INFORMATION,
 492 #if (IRRLICHT_VERSION_MAJOR == 1 && IRRLICHT_VERSION_MINOR < 8)
 493                 ELL_INFORMATION
 494 #else
 495                 ELL_DEBUG
 496 #endif
 497         };
 498
 499         // Resolution selection
 500         bool fullscreen = g_settings->getBool("fullscreen");
 501         u16 screenW = g_settings->getU16("screenW");
 502         u16 screenH = g_settings->getU16("screenH");
 503
 504         // bpp, fsaa, vsync
 505         bool vsync = g_settings->getBool("vsync");
 506         u16 bits = g_settings->getU16("fullscreen_bpp");
 507         u16 fsaa = g_settings->getU16("fsaa");
 508
 509         // Determine driver
 510         video::E_DRIVER_TYPE driverType = video::EDT_OPENGL;
 511         std::string driverstring = g_settings->get("video_driver");
 512         std::vector<video::E_DRIVER_TYPE> drivers
 513                 = porting::getSupportedVideoDrivers();
 514         u32 i;
 515         for (i = 0; i != drivers.size(); i++) {
 516                 if (!strcasecmp(driverstring.c_str(),
 517                         porting::getVideoDriverName(drivers[i]))) {
 518                         driverType = drivers[i];
 519                         break;
 520                 }
 521         }
 522         if (i == drivers.size()) {
 523                 errorstream << "Invalid video_driver specified; "
 524                         "defaulting to opengl" << std::endl;
 525         }
 526
 527         SIrrlichtCreationParameters params = SIrrlichtCreationParameters();
 528         params.DriverType    = driverType;
 529         params.WindowSize    = core::dimension2d<u32>(screenW, screenH);
 530         params.Bits          = bits;
 531         params.AntiAlias     = fsaa;
 532         params.Fullscreen    = fullscreen;
 533         params.Stencilbuffer = false;
 534         params.Vsync         = vsync;
 535         params.EventReceiver = receiver;
 536         params.HighPrecisionFPU = g_settings->getBool("high_precision_fpu");
 537 #ifdef __ANDROID__
 538         params.PrivateData = porting::app_global;
 539         params.OGLES2ShaderPath = std::string(porting::path_user + DIR_DELIM +
 540                         "media" + DIR_DELIM + "Shaders" + DIR_DELIM).c_str();
 541 #endif
 542
 543         device = createDeviceEx(params);
 544
 545         if (device) {
 546                 // Map our log level to irrlicht engine one.
 547                 ILogger* irr_logger = device->getLogger();
 548                 irr_logger->setLogLevel(irr_log_level[log_level]);
 549
 550                 porting::initIrrlicht(device);
 551         }
 552
 553         return device != NULL;
 554 }
 555
 556 void ClientLauncher::speed_tests()
 557 {
 558         // volatile to avoid some potential compiler optimisations
 559         volatile static s16 temp16;
 560         volatile static f32 tempf;
 561         static v3f tempv3f1;
 562         static v3f tempv3f2;
 563         static std::string tempstring;
 564         static std::string tempstring2;
 565
 566         tempv3f1 = v3f();
 567         tempv3f2 = v3f();
 568         tempstring = std::string();
 569         tempstring2 = std::string();
 570
 571         {
 572                 infostream << "The following test should take around 20ms." << std::endl;
 573                 TimeTaker timer("Testing std::string speed");
 574                 const u32 jj = 10000;
 575                 for (u32 j = 0; j < jj; j++) {
 576                         tempstring = "";
 577                         tempstring2 = "";
 578                         const u32 ii = 10;
 579                         for (u32 i = 0; i < ii; i++) {
 580                                 tempstring2 += "asd";
 581                         }
 582                         for (u32 i = 0; i < ii+1; i++) {
 583                                 tempstring += "asd";
 584                                 if (tempstring == tempstring2)
 585                                         break;
 586                         }
 587                 }
 588         }
 589
 590         infostream << "All of the following tests should take around 100ms each."
 591                    << std::endl;
 592
 593         {
 594                 TimeTaker timer("Testing floating-point conversion speed");
 595                 tempf = 0.001;
 596                 for (u32 i = 0; i < 4000000; i++) {
 597                         temp16 += tempf;
 598                         tempf += 0.001;
 599                 }
 600         }
 601
 602         {
 603                 TimeTaker timer("Testing floating-point vector speed");
 604
 605                 tempv3f1 = v3f(1, 2, 3);
 606                 tempv3f2 = v3f(4, 5, 6);
 607                 for (u32 i = 0; i < 10000000; i++) {
 608                         tempf += tempv3f1.dotProduct(tempv3f2);
 609                         tempv3f2 += v3f(7, 8, 9);
 610                 }
 611         }
 612
 613         {
 614                 TimeTaker timer("Testing std::map speed");
 615
 616                 std::map<v2s16, f32> map1;
 617                 tempf = -324;
 618                 const s16 ii = 300;
 619                 for (s16 y = 0; y < ii; y++) {
 620                         for (s16 x = 0; x < ii; x++) {
 621                                 map1[v2s16(x, y)] =  tempf;
 622                                 tempf += 1;
 623                         }
 624                 }
 625                 for (s16 y = ii - 1; y >= 0; y--) {
 626                         for (s16 x = 0; x < ii; x++) {
 627                                 tempf = map1[v2s16(x, y)];
 628                         }
 629                 }
 630         }
 631
 632         {
 633                 infostream << "Around 5000/ms should do well here." << std::endl;
 634                 TimeTaker timer("Testing mutex speed");
 635
 636                 JMutex m;
 637                 u32 n = 0;
 638                 u32 i = 0;
 639                 do {
 640                         n += 10000;
 641                         for (; i < n; i++) {
 642                                 m.Lock();
 643                                 m.Unlock();
 644                         }
 645                 }
 646                 // Do at least 10ms
 647                 while(timer.getTimerTime() < 10);
 648
 649                 u32 dtime = timer.stop();
 650                 u32 per_ms = n / dtime;
 651                 infostream << "Done. " << dtime << "ms, " << per_ms << "/ms" << std::endl;
 652         }
 653 }
 654
 655 bool ClientLauncher::print_video_modes()
 656 {
 657         IrrlichtDevice *nulldevice;
 658
 659         bool vsync = g_settings->getBool("vsync");
 660         u16 fsaa = g_settings->getU16("fsaa");
 661         MyEventReceiver* receiver = new MyEventReceiver();
 662
 663         SIrrlichtCreationParameters params = SIrrlichtCreationParameters();
 664         params.DriverType    = video::EDT_NULL;
 665         params.WindowSize    = core::dimension2d<u32>(640, 480);
 666         params.Bits          = 24;
 667         params.AntiAlias     = fsaa;
 668         params.Fullscreen    = false;
 669         params.Stencilbuffer = false;
 670         params.Vsync         = vsync;
 671         params.EventReceiver = receiver;
 672         params.HighPrecisionFPU = g_settings->getBool("high_precision_fpu");
 673
 674         nulldevice = createDeviceEx(params);
 675
 676         if (nulldevice == NULL) {
 677                 delete receiver;
 678                 return false;
 679         }
 680
 681         dstream << _("Available video modes (WxHxD):") << std::endl;
 682
 683         video::IVideoModeList *videomode_list = nulldevice->getVideoModeList();
 684
 685         if (videomode_list != NULL) {
 686                 s32 videomode_count = videomode_list->getVideoModeCount();
 687                 core::dimension2d<u32> videomode_res;
 688                 s32 videomode_depth;
 689                 for (s32 i = 0; i < videomode_count; ++i) {
 690                         videomode_res = videomode_list->getVideoModeResolution(i);
 691                         videomode_depth = videomode_list->getVideoModeDepth(i);
 692                         dstream << videomode_res.Width << "x" << videomode_res.Height
 693                                 << "x" << videomode_depth << std::endl;
 694                 }
 695
 696                 dstream << _("Active video mode (WxHxD):") << std::endl;
 697                 videomode_res = videomode_list->getDesktopResolution();
 698                 videomode_depth = videomode_list->getDesktopDepth();
 699                 dstream << videomode_res.Width << "x" << videomode_res.Height
 700                         << "x" << videomode_depth << std::endl;
 701
 702         }
 703
 704         nulldevice->drop();
 705         delete receiver;
 706
 707         return videomode_list != NULL;
 708 }