src/script/lua_api/l_mainmenu.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2013 sapier
   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 "lua_api/l_mainmenu.h"
  21 #include "lua_api/l_internal.h"
  22 #include "common/c_content.h"
  23 #include "cpp_api/s_async.h"
  24 #include "scripting_mainmenu.h"
  25 #include "gui/guiEngine.h"
  26 #include "gui/guiMainMenu.h"
  27 #include "gui/guiKeyChangeMenu.h"
  28 #include "gui/guiPathSelectMenu.h"
  29 #include "version.h"
  30 #include "porting.h"
  31 #include "filesys.h"
  32 #include "convert_json.h"
  33 #include "content/content.h"
  34 #include "content/subgames.h"
  35 #include "serverlist.h"
  36 #include "mapgen/mapgen.h"
  37 #include "settings.h"
  38 #include "client/client.h"
  39 #include "client/renderingengine.h"
  40 #include "network/networkprotocol.h"
  41
  42
  43 /******************************************************************************/
  44 std::string ModApiMainMenu::getTextData(lua_State *L, std::string name)
  45 {
  46         lua_getglobal(L, "gamedata");
  47
  48         lua_getfield(L, -1, name.c_str());
  49
  50         if(lua_isnil(L, -1))
  51                 return "";
  52
  53         return luaL_checkstring(L, -1);
  54 }
  55
  56 /******************************************************************************/
  57 int ModApiMainMenu::getIntegerData(lua_State *L, std::string name,bool& valid)
  58 {
  59         lua_getglobal(L, "gamedata");
  60
  61         lua_getfield(L, -1, name.c_str());
  62
  63         if(lua_isnil(L, -1)) {
  64                 valid = false;
  65                 return -1;
  66                 }
  67
  68         valid = true;
  69         return luaL_checkinteger(L, -1);
  70 }
  71
  72 /******************************************************************************/
  73 int ModApiMainMenu::getBoolData(lua_State *L, std::string name,bool& valid)
  74 {
  75         lua_getglobal(L, "gamedata");
  76
  77         lua_getfield(L, -1, name.c_str());
  78
  79         if(lua_isnil(L, -1)) {
  80                 valid = false;
  81                 return false;
  82                 }
  83
  84         valid = true;
  85         return readParam<bool>(L, -1);
  86 }
  87
  88 /******************************************************************************/
  89 int ModApiMainMenu::l_update_formspec(lua_State *L)
  90 {
  91         GUIEngine* engine = getGuiEngine(L);
  92         sanity_check(engine != NULL);
  93
  94         if (engine->m_startgame)
  95                 return 0;
  96
  97         //read formspec
  98         std::string formspec(luaL_checkstring(L, 1));
  99
 100         if (engine->m_formspecgui != 0) {
 101                 engine->m_formspecgui->setForm(formspec);
 102         }
 103
 104         return 0;
 105 }
 106
 107 /******************************************************************************/
 108 int ModApiMainMenu::l_set_formspec_prepend(lua_State *L)
 109 {
 110         GUIEngine *engine = getGuiEngine(L);
 111         sanity_check(engine != NULL);
 112
 113         if (engine->m_startgame)
 114                 return 0;
 115
 116         std::string formspec(luaL_checkstring(L, 1));
 117         engine->setFormspecPrepend(formspec);
 118
 119         return 0;
 120 }
 121
 122 /******************************************************************************/
 123 int ModApiMainMenu::l_start(lua_State *L)
 124 {
 125         GUIEngine* engine = getGuiEngine(L);
 126         sanity_check(engine != NULL);
 127
 128         //update c++ gamedata from lua table
 129
 130         bool valid = false;
 131
 132         MainMenuData *data = engine->m_data;
 133
 134         data->selected_world = getIntegerData(L, "selected_world",valid) -1;
 135         data->simple_singleplayer_mode = getBoolData(L,"singleplayer",valid);
 136         data->do_reconnect = getBoolData(L, "do_reconnect", valid);
 137         if (!data->do_reconnect) {
 138                 data->name     = getTextData(L,"playername");
 139                 data->password = getTextData(L,"password");
 140                 data->address  = getTextData(L,"address");
 141                 data->port     = getTextData(L,"port");
 142         }
 143         data->serverdescription = getTextData(L,"serverdescription");
 144         data->servername        = getTextData(L,"servername");
 145
 146         //close menu next time
 147         engine->m_startgame = true;
 148         return 0;
 149 }
 150
 151 /******************************************************************************/
 152 int ModApiMainMenu::l_close(lua_State *L)
 153 {
 154         GUIEngine* engine = getGuiEngine(L);
 155         sanity_check(engine != NULL);
 156
 157         engine->m_kill = true;
 158         return 0;
 159 }
 160
 161 /******************************************************************************/
 162 int ModApiMainMenu::l_set_background(lua_State *L)
 163 {
 164         GUIEngine* engine = getGuiEngine(L);
 165         sanity_check(engine != NULL);
 166
 167         std::string backgroundlevel(luaL_checkstring(L, 1));
 168         std::string texturename(luaL_checkstring(L, 2));
 169
 170         bool tile_image = false;
 171         bool retval     = false;
 172         unsigned int minsize = 16;
 173
 174         if (!lua_isnone(L, 3)) {
 175                 tile_image = readParam<bool>(L, 3);
 176         }
 177
 178         if (!lua_isnone(L, 4)) {
 179                 minsize = lua_tonumber(L, 4);
 180         }
 181
 182         if (backgroundlevel == "background") {
 183                 retval |= engine->setTexture(TEX_LAYER_BACKGROUND, texturename,
 184                                 tile_image, minsize);
 185         }
 186
 187         if (backgroundlevel == "overlay") {
 188                 retval |= engine->setTexture(TEX_LAYER_OVERLAY, texturename,
 189                                 tile_image, minsize);
 190         }
 191
 192         if (backgroundlevel == "header") {
 193                 retval |= engine->setTexture(TEX_LAYER_HEADER,  texturename,
 194                                 tile_image, minsize);
 195         }
 196
 197         if (backgroundlevel == "footer") {
 198                 retval |= engine->setTexture(TEX_LAYER_FOOTER, texturename,
 199                                 tile_image, minsize);
 200         }
 201
 202         lua_pushboolean(L,retval);
 203         return 1;
 204 }
 205
 206 /******************************************************************************/
 207 int ModApiMainMenu::l_set_clouds(lua_State *L)
 208 {
 209         GUIEngine* engine = getGuiEngine(L);
 210         sanity_check(engine != NULL);
 211
 212         bool value = readParam<bool>(L,1);
 213
 214         engine->m_clouds_enabled = value;
 215
 216         return 0;
 217 }
 218
 219 /******************************************************************************/
 220 int ModApiMainMenu::l_get_textlist_index(lua_State *L)
 221 {
 222         // get_table_index accepts both tables and textlists
 223         return l_get_table_index(L);
 224 }
 225
 226 /******************************************************************************/
 227 int ModApiMainMenu::l_get_table_index(lua_State *L)
 228 {
 229         GUIEngine* engine = getGuiEngine(L);
 230         sanity_check(engine != NULL);
 231
 232         std::string tablename(luaL_checkstring(L, 1));
 233         GUITable *table = engine->m_menu->getTable(tablename);
 234         s32 selection = table ? table->getSelected() : 0;
 235
 236         if (selection >= 1)
 237                 lua_pushinteger(L, selection);
 238         else
 239                 lua_pushnil(L);
 240         return 1;
 241 }
 242
 243 /******************************************************************************/
 244 int ModApiMainMenu::l_get_worlds(lua_State *L)
 245 {
 246         std::vector<WorldSpec> worlds = getAvailableWorlds();
 247
 248         lua_newtable(L);
 249         int top = lua_gettop(L);
 250         unsigned int index = 1;
 251
 252         for (const WorldSpec &world : worlds) {
 253                 lua_pushnumber(L,index);
 254
 255                 lua_newtable(L);
 256                 int top_lvl2 = lua_gettop(L);
 257
 258                 lua_pushstring(L,"path");
 259                 lua_pushstring(L, world.path.c_str());
 260                 lua_settable(L, top_lvl2);
 261
 262                 lua_pushstring(L,"name");
 263                 lua_pushstring(L, world.name.c_str());
 264                 lua_settable(L, top_lvl2);
 265
 266                 lua_pushstring(L,"gameid");
 267                 lua_pushstring(L, world.gameid.c_str());
 268                 lua_settable(L, top_lvl2);
 269
 270                 lua_settable(L, top);
 271                 index++;
 272         }
 273         return 1;
 274 }
 275
 276 /******************************************************************************/
 277 int ModApiMainMenu::l_get_games(lua_State *L)
 278 {
 279         std::vector<SubgameSpec> games = getAvailableGames();
 280
 281         lua_newtable(L);
 282         int top = lua_gettop(L);
 283         unsigned int index = 1;
 284
 285         for (const SubgameSpec &game : games) {
 286                 lua_pushnumber(L, index);
 287                 lua_newtable(L);
 288                 int top_lvl2 = lua_gettop(L);
 289
 290                 lua_pushstring(L,  "id");
 291                 lua_pushstring(L,  game.id.c_str());
 292                 lua_settable(L,    top_lvl2);
 293
 294                 lua_pushstring(L,  "path");
 295                 lua_pushstring(L,  game.path.c_str());
 296                 lua_settable(L,    top_lvl2);
 297
 298                 lua_pushstring(L,  "type");
 299                 lua_pushstring(L,  "game");
 300                 lua_settable(L,    top_lvl2);
 301
 302                 lua_pushstring(L,  "gamemods_path");
 303                 lua_pushstring(L,  game.gamemods_path.c_str());
 304                 lua_settable(L,    top_lvl2);
 305
 306                 lua_pushstring(L,  "name");
 307                 lua_pushstring(L,  game.name.c_str());
 308                 lua_settable(L,    top_lvl2);
 309
 310                 lua_pushstring(L,  "author");
 311                 lua_pushstring(L,  game.author.c_str());
 312                 lua_settable(L,    top_lvl2);
 313
 314                 lua_pushstring(L,  "release");
 315                 lua_pushinteger(L, game.release);
 316                 lua_settable(L,    top_lvl2);
 317
 318                 lua_pushstring(L,  "menuicon_path");
 319                 lua_pushstring(L,  game.menuicon_path.c_str());
 320                 lua_settable(L,    top_lvl2);
 321
 322                 lua_pushstring(L, "addon_mods_paths");
 323                 lua_newtable(L);
 324                 int table2 = lua_gettop(L);
 325                 int internal_index = 1;
 326                 for (const std::string &addon_mods_path : game.addon_mods_paths) {
 327                         lua_pushnumber(L, internal_index);
 328                         lua_pushstring(L, addon_mods_path.c_str());
 329                         lua_settable(L,   table2);
 330                         internal_index++;
 331                 }
 332                 lua_settable(L, top_lvl2);
 333                 lua_settable(L, top);
 334                 index++;
 335         }
 336         return 1;
 337 }
 338
 339 /******************************************************************************/
 340 int ModApiMainMenu::l_get_content_info(lua_State *L)
 341 {
 342         std::string path = luaL_checkstring(L, 1);
 343
 344         ContentSpec spec;
 345         spec.path = path;
 346         parseContentInfo(spec);
 347
 348         lua_newtable(L);
 349
 350         lua_pushstring(L, spec.name.c_str());
 351         lua_setfield(L, -2, "name");
 352
 353         lua_pushstring(L, spec.type.c_str());
 354         lua_setfield(L, -2, "type");
 355
 356         lua_pushstring(L, spec.author.c_str());
 357         lua_setfield(L, -2, "author");
 358
 359         lua_pushinteger(L, spec.release);
 360         lua_setfield(L, -2, "release");
 361
 362         lua_pushstring(L, spec.desc.c_str());
 363         lua_setfield(L, -2, "description");
 364
 365         lua_pushstring(L, spec.path.c_str());
 366         lua_setfield(L, -2, "path");
 367
 368         if (spec.type == "mod") {
 369                 ModSpec spec;
 370                 spec.path = path;
 371                 parseModContents(spec);
 372
 373                 // Dependencies
 374                 lua_newtable(L);
 375                 int i = 1;
 376                 for (const auto &dep : spec.depends) {
 377                         lua_pushstring(L, dep.c_str());
 378                         lua_rawseti(L, -2, i++);
 379                 }
 380                 lua_setfield(L, -2, "depends");
 381
 382                 // Optional Dependencies
 383                 lua_newtable(L);
 384                 i = 1;
 385                 for (const auto &dep : spec.optdepends) {
 386                         lua_pushstring(L, dep.c_str());
 387                         lua_rawseti(L, -2, i++);
 388                 }
 389                 lua_setfield(L, -2, "optional_depends");
 390         }
 391
 392         return 1;
 393 }
 394
 395 /******************************************************************************/
 396 int ModApiMainMenu::l_show_keys_menu(lua_State *L)
 397 {
 398         GUIEngine* engine = getGuiEngine(L);
 399         sanity_check(engine != NULL);
 400
 401         GUIKeyChangeMenu *kmenu = new GUIKeyChangeMenu(
 402                         engine->m_rendering_engine->get_gui_env(),
 403                         engine->m_parent,
 404                         -1,
 405                         engine->m_menumanager,
 406                         engine->m_texture_source);
 407         kmenu->drop();
 408         return 0;
 409 }
 410
 411 /******************************************************************************/
 412 int ModApiMainMenu::l_create_world(lua_State *L)
 413 {
 414         const char *name        = luaL_checkstring(L, 1);
 415         int gameidx                     = luaL_checkinteger(L,2) -1;
 416
 417         std::string path = porting::path_user + DIR_DELIM
 418                         "worlds" + DIR_DELIM
 419                         + sanitizeDirName(name, "world_");
 420
 421         std::vector<SubgameSpec> games = getAvailableGames();
 422
 423         if ((gameidx >= 0) &&
 424                         (gameidx < (int) games.size())) {
 425
 426                 // Create world if it doesn't exist
 427                 try {
 428                         loadGameConfAndInitWorld(path, name, games[gameidx], true);
 429                         lua_pushnil(L);
 430                 } catch (const BaseException &e) {
 431                         lua_pushstring(L, (std::string("Failed to initialize world: ") + e.what()).c_str());
 432                 }
 433         } else {
 434                 lua_pushstring(L, "Invalid game index");
 435         }
 436         return 1;
 437 }
 438
 439 /******************************************************************************/
 440 int ModApiMainMenu::l_delete_world(lua_State *L)
 441 {
 442         int world_id = luaL_checkinteger(L, 1) - 1;
 443         std::vector<WorldSpec> worlds = getAvailableWorlds();
 444         if (world_id < 0 || world_id >= (int) worlds.size()) {
 445                 lua_pushstring(L, "Invalid world index");
 446                 return 1;
 447         }
 448         const WorldSpec &spec = worlds[world_id];
 449         if (!fs::RecursiveDelete(spec.path)) {
 450                 lua_pushstring(L, "Failed to delete world");
 451                 return 1;
 452         }
 453         return 0;
 454 }
 455
 456 /******************************************************************************/
 457 int ModApiMainMenu::l_set_topleft_text(lua_State *L)
 458 {
 459         GUIEngine* engine = getGuiEngine(L);
 460         sanity_check(engine != NULL);
 461
 462         std::string text;
 463
 464         if (!lua_isnone(L,1) && !lua_isnil(L,1))
 465                 text = luaL_checkstring(L, 1);
 466
 467         engine->setTopleftText(text);
 468         return 0;
 469 }
 470
 471 /******************************************************************************/
 472 int ModApiMainMenu::l_get_mapgen_names(lua_State *L)
 473 {
 474         std::vector<const char *> names;
 475         bool include_hidden = lua_isboolean(L, 1) && readParam<bool>(L, 1);
 476         Mapgen::getMapgenNames(&names, include_hidden);
 477
 478         lua_newtable(L);
 479         for (size_t i = 0; i != names.size(); i++) {
 480                 lua_pushstring(L, names[i]);
 481                 lua_rawseti(L, -2, i + 1);
 482         }
 483
 484         return 1;
 485 }
 486
 487
 488 /******************************************************************************/
 489 int ModApiMainMenu::l_get_user_path(lua_State *L)
 490 {
 491         std::string path = fs::RemoveRelativePathComponents(porting::path_user);
 492         lua_pushstring(L, path.c_str());
 493         return 1;
 494 }
 495
 496 /******************************************************************************/
 497 int ModApiMainMenu::l_get_modpath(lua_State *L)
 498 {
 499         std::string modpath = fs::RemoveRelativePathComponents(
 500                 porting::path_user + DIR_DELIM + "mods" + DIR_DELIM);
 501         lua_pushstring(L, modpath.c_str());
 502         return 1;
 503 }
 504
 505 /******************************************************************************/
 506 int ModApiMainMenu::l_get_modpaths(lua_State *L)
 507 {
 508         int index = 1;
 509         lua_newtable(L);
 510         ModApiMainMenu::l_get_modpath(L);
 511         lua_rawseti(L, -2, index);
 512         for (const std::string &component : getEnvModPaths()) {
 513                 index++;
 514                 lua_pushstring(L, component.c_str());
 515                 lua_rawseti(L, -2, index);
 516         }
 517         return 1;
 518 }
 519
 520 /******************************************************************************/
 521 int ModApiMainMenu::l_get_clientmodpath(lua_State *L)
 522 {
 523         std::string modpath = fs::RemoveRelativePathComponents(
 524                 porting::path_user + DIR_DELIM + "clientmods" + DIR_DELIM);
 525         lua_pushstring(L, modpath.c_str());
 526         return 1;
 527 }
 528
 529 /******************************************************************************/
 530 int ModApiMainMenu::l_get_gamepath(lua_State *L)
 531 {
 532         std::string gamepath = fs::RemoveRelativePathComponents(
 533                 porting::path_user + DIR_DELIM + "games" + DIR_DELIM);
 534         lua_pushstring(L, gamepath.c_str());
 535         return 1;
 536 }
 537
 538 /******************************************************************************/
 539 int ModApiMainMenu::l_get_texturepath(lua_State *L)
 540 {
 541         std::string gamepath = fs::RemoveRelativePathComponents(
 542                 porting::path_user + DIR_DELIM + "textures");
 543         lua_pushstring(L, gamepath.c_str());
 544         return 1;
 545 }
 546
 547 /******************************************************************************/
 548 int ModApiMainMenu::l_get_texturepath_share(lua_State *L)
 549 {
 550         std::string gamepath = fs::RemoveRelativePathComponents(
 551                 porting::path_share + DIR_DELIM + "textures");
 552         lua_pushstring(L, gamepath.c_str());
 553         return 1;
 554 }
 555
 556 /******************************************************************************/
 557 int ModApiMainMenu::l_get_cache_path(lua_State *L)
 558 {
 559         lua_pushstring(L, fs::RemoveRelativePathComponents(porting::path_cache).c_str());
 560         return 1;
 561 }
 562
 563 /******************************************************************************/
 564 int ModApiMainMenu::l_get_temp_path(lua_State *L)
 565 {
 566         lua_pushstring(L, fs::TempPath().c_str());
 567         return 1;
 568 }
 569
 570 /******************************************************************************/
 571 int ModApiMainMenu::l_create_dir(lua_State *L) {
 572         const char *path = luaL_checkstring(L, 1);
 573
 574         if (ModApiMainMenu::mayModifyPath(path)) {
 575                 lua_pushboolean(L, fs::CreateAllDirs(path));
 576                 return 1;
 577         }
 578
 579         lua_pushboolean(L, false);
 580         return 1;
 581 }
 582
 583 /******************************************************************************/
 584 int ModApiMainMenu::l_delete_dir(lua_State *L)
 585 {
 586         const char *path = luaL_checkstring(L, 1);
 587
 588         std::string absolute_path = fs::RemoveRelativePathComponents(path);
 589
 590         if (ModApiMainMenu::mayModifyPath(absolute_path)) {
 591                 lua_pushboolean(L, fs::RecursiveDelete(absolute_path));
 592                 return 1;
 593         }
 594
 595         lua_pushboolean(L, false);
 596         return 1;
 597 }
 598
 599 /******************************************************************************/
 600 int ModApiMainMenu::l_copy_dir(lua_State *L)
 601 {
 602         const char *source      = luaL_checkstring(L, 1);
 603         const char *destination = luaL_checkstring(L, 2);
 604
 605         bool keep_source = true;
 606
 607         if ((!lua_isnone(L,3)) &&
 608                         (!lua_isnil(L,3))) {
 609                 keep_source = readParam<bool>(L,3);
 610         }
 611
 612         std::string absolute_destination = fs::RemoveRelativePathComponents(destination);
 613         std::string absolute_source = fs::RemoveRelativePathComponents(source);
 614
 615         if ((ModApiMainMenu::mayModifyPath(absolute_destination))) {
 616                 bool retval = fs::CopyDir(absolute_source,absolute_destination);
 617
 618                 if (retval && (!keep_source)) {
 619
 620                         retval &= fs::RecursiveDelete(absolute_source);
 621                 }
 622                 lua_pushboolean(L,retval);
 623                 return 1;
 624         }
 625         lua_pushboolean(L,false);
 626         return 1;
 627 }
 628
 629 /******************************************************************************/
 630 int ModApiMainMenu::l_is_dir(lua_State *L)
 631 {
 632         const char *path = luaL_checkstring(L, 1);
 633
 634         lua_pushboolean(L, fs::IsDir(path));
 635         return 1;
 636 }
 637
 638 /******************************************************************************/
 639 int ModApiMainMenu::l_extract_zip(lua_State *L)
 640 {
 641         const char *zipfile     = luaL_checkstring(L, 1);
 642         const char *destination = luaL_checkstring(L, 2);
 643
 644         std::string absolute_destination = fs::RemoveRelativePathComponents(destination);
 645
 646         if (ModApiMainMenu::mayModifyPath(absolute_destination)) {
 647                 auto rendering_engine = getGuiEngine(L)->m_rendering_engine;
 648                 fs::CreateAllDirs(absolute_destination);
 649                 lua_pushboolean(L, fs::extractZipFile(rendering_engine->get_filesystem(), zipfile, destination));
 650                 return 1;
 651         }
 652
 653         lua_pushboolean(L,false);
 654         return 1;
 655 }
 656
 657 /******************************************************************************/
 658 int ModApiMainMenu::l_get_mainmenu_path(lua_State *L)
 659 {
 660         GUIEngine* engine = getGuiEngine(L);
 661         sanity_check(engine != NULL);
 662
 663         lua_pushstring(L,engine->getScriptDir().c_str());
 664         return 1;
 665 }
 666
 667 /******************************************************************************/
 668 bool ModApiMainMenu::mayModifyPath(std::string path)
 669 {
 670         path = fs::RemoveRelativePathComponents(path);
 671
 672         if (fs::PathStartsWith(path, fs::TempPath()))
 673                 return true;
 674
 675         std::string path_user = fs::RemoveRelativePathComponents(porting::path_user);
 676
 677         if (fs::PathStartsWith(path, path_user + DIR_DELIM "client"))
 678                 return true;
 679         if (fs::PathStartsWith(path, path_user + DIR_DELIM "games"))
 680                 return true;
 681         if (fs::PathStartsWith(path, path_user + DIR_DELIM "mods"))
 682                 return true;
 683         if (fs::PathStartsWith(path, path_user + DIR_DELIM "textures"))
 684                 return true;
 685         if (fs::PathStartsWith(path, path_user + DIR_DELIM "worlds"))
 686                 return true;
 687
 688         if (fs::PathStartsWith(path, fs::RemoveRelativePathComponents(porting::path_cache)))
 689                 return true;
 690
 691         return false;
 692 }
 693
 694
 695 /******************************************************************************/
 696 int ModApiMainMenu::l_may_modify_path(lua_State *L)
 697 {
 698         const char *target = luaL_checkstring(L, 1);
 699         std::string absolute_destination = fs::RemoveRelativePathComponents(target);
 700         lua_pushboolean(L, ModApiMainMenu::mayModifyPath(absolute_destination));
 701         return 1;
 702 }
 703
 704 /******************************************************************************/
 705 int ModApiMainMenu::l_show_path_select_dialog(lua_State *L)
 706 {
 707         GUIEngine* engine = getGuiEngine(L);
 708         sanity_check(engine != NULL);
 709
 710         const char *formname= luaL_checkstring(L, 1);
 711         const char *title       = luaL_checkstring(L, 2);
 712         bool is_file_select = readParam<bool>(L, 3);
 713
 714         GUIFileSelectMenu* fileOpenMenu =
 715                 new GUIFileSelectMenu(engine->m_rendering_engine->get_gui_env(),
 716                                 engine->m_parent,
 717                                 -1,
 718                                 engine->m_menumanager,
 719                                 title,
 720                                 formname,
 721                                 is_file_select);
 722         fileOpenMenu->setTextDest(engine->m_buttonhandler);
 723         fileOpenMenu->drop();
 724         return 0;
 725 }
 726
 727 /******************************************************************************/
 728 int ModApiMainMenu::l_download_file(lua_State *L)
 729 {
 730         const char *url    = luaL_checkstring(L, 1);
 731         const char *target = luaL_checkstring(L, 2);
 732
 733         //check path
 734         std::string absolute_destination = fs::RemoveRelativePathComponents(target);
 735
 736         if (ModApiMainMenu::mayModifyPath(absolute_destination)) {
 737                 if (GUIEngine::downloadFile(url,absolute_destination)) {
 738                         lua_pushboolean(L,true);
 739                         return 1;
 740                 }
 741         } else {
 742                 errorstream << "DOWNLOAD denied: " << absolute_destination
 743                                 << " isn't a allowed path" << std::endl;
 744         }
 745         lua_pushboolean(L,false);
 746         return 1;
 747 }
 748
 749 /******************************************************************************/
 750 int ModApiMainMenu::l_get_video_drivers(lua_State *L)
 751 {
 752         std::vector<irr::video::E_DRIVER_TYPE> drivers = RenderingEngine::getSupportedVideoDrivers();
 753
 754         lua_newtable(L);
 755         for (u32 i = 0; i != drivers.size(); i++) {
 756                 auto &info = RenderingEngine::getVideoDriverInfo(drivers[i]);
 757
 758                 lua_newtable(L);
 759                 lua_pushstring(L, info.name.c_str());
 760                 lua_setfield(L, -2, "name");
 761                 lua_pushstring(L, info.friendly_name.c_str());
 762                 lua_setfield(L, -2, "friendly_name");
 763
 764                 lua_rawseti(L, -2, i + 1);
 765         }
 766
 767         return 1;
 768 }
 769
 770 /******************************************************************************/
 771 int ModApiMainMenu::l_gettext(lua_State *L)
 772 {
 773         std::string text = strgettext(std::string(luaL_checkstring(L, 1)));
 774         lua_pushstring(L, text.c_str());
 775
 776         return 1;
 777 }
 778
 779 /******************************************************************************/
 780 int ModApiMainMenu::l_get_screen_info(lua_State *L)
 781 {
 782         lua_newtable(L);
 783         int top = lua_gettop(L);
 784         lua_pushstring(L,"density");
 785         lua_pushnumber(L,RenderingEngine::getDisplayDensity());
 786         lua_settable(L, top);
 787
 788         const v2u32 &window_size = RenderingEngine::getWindowSize();
 789         lua_pushstring(L,"window_width");
 790         lua_pushnumber(L, window_size.X);
 791         lua_settable(L, top);
 792
 793         lua_pushstring(L,"window_height");
 794         lua_pushnumber(L, window_size.Y);
 795         lua_settable(L, top);
 796
 797         lua_pushstring(L, "render_info");
 798         lua_pushstring(L, wide_to_utf8(RenderingEngine::get_video_driver()->getName()).c_str());
 799         lua_settable(L, top);
 800         return 1;
 801 }
 802
 803 /******************************************************************************/
 804 int ModApiMainMenu::l_get_min_supp_proto(lua_State *L)
 805 {
 806         lua_pushinteger(L, CLIENT_PROTOCOL_VERSION_MIN);
 807         return 1;
 808 }
 809
 810 int ModApiMainMenu::l_get_max_supp_proto(lua_State *L)
 811 {
 812         lua_pushinteger(L, CLIENT_PROTOCOL_VERSION_MAX);
 813         return 1;
 814 }
 815
 816 /******************************************************************************/
 817 int ModApiMainMenu::l_open_url(lua_State *L)
 818 {
 819         std::string url = luaL_checkstring(L, 1);
 820         lua_pushboolean(L, porting::open_url(url));
 821         return 1;
 822 }
 823
 824 /******************************************************************************/
 825 int ModApiMainMenu::l_open_dir(lua_State *L)
 826 {
 827         std::string path = luaL_checkstring(L, 1);
 828         lua_pushboolean(L, porting::open_directory(path));
 829         return 1;
 830 }
 831
 832 /******************************************************************************/
 833 int ModApiMainMenu::l_do_async_callback(lua_State *L)
 834 {
 835         MainMenuScripting *script = getScriptApi<MainMenuScripting>(L);
 836
 837         size_t func_length, param_length;
 838         const char* serialized_func_raw = luaL_checklstring(L, 1, &func_length);
 839         const char* serialized_param_raw = luaL_checklstring(L, 2, &param_length);
 840
 841         sanity_check(serialized_func_raw != NULL);
 842         sanity_check(serialized_param_raw != NULL);
 843
 844         u32 jobId = script->queueAsync(
 845                 std::string(serialized_func_raw, func_length),
 846                 std::string(serialized_param_raw, param_length));
 847
 848         lua_pushinteger(L, jobId);
 849
 850         return 1;
 851 }
 852
 853 /******************************************************************************/
 854 void ModApiMainMenu::Initialize(lua_State *L, int top)
 855 {
 856         API_FCT(update_formspec);
 857         API_FCT(set_formspec_prepend);
 858         API_FCT(set_clouds);
 859         API_FCT(get_textlist_index);
 860         API_FCT(get_table_index);
 861         API_FCT(get_worlds);
 862         API_FCT(get_games);
 863         API_FCT(get_content_info);
 864         API_FCT(start);
 865         API_FCT(close);
 866         API_FCT(show_keys_menu);
 867         API_FCT(create_world);
 868         API_FCT(delete_world);
 869         API_FCT(set_background);
 870         API_FCT(set_topleft_text);
 871         API_FCT(get_mapgen_names);
 872         API_FCT(get_user_path);
 873         API_FCT(get_modpath);
 874         API_FCT(get_modpaths);
 875         API_FCT(get_clientmodpath);
 876         API_FCT(get_gamepath);
 877         API_FCT(get_texturepath);
 878         API_FCT(get_texturepath_share);
 879         API_FCT(get_cache_path);
 880         API_FCT(get_temp_path);
 881         API_FCT(create_dir);
 882         API_FCT(delete_dir);
 883         API_FCT(copy_dir);
 884         API_FCT(is_dir);
 885         API_FCT(extract_zip);
 886         API_FCT(may_modify_path);
 887         API_FCT(get_mainmenu_path);
 888         API_FCT(show_path_select_dialog);
 889         API_FCT(download_file);
 890         API_FCT(gettext);
 891         API_FCT(get_video_drivers);
 892         API_FCT(get_screen_info);
 893         API_FCT(get_min_supp_proto);
 894         API_FCT(get_max_supp_proto);
 895         API_FCT(open_url);
 896         API_FCT(open_dir);
 897         API_FCT(do_async_callback);
 898 }
 899
 900 /******************************************************************************/
 901 void ModApiMainMenu::InitializeAsync(lua_State *L, int top)
 902 {
 903         API_FCT(get_worlds);
 904         API_FCT(get_games);
 905         API_FCT(get_mapgen_names);
 906         API_FCT(get_user_path);
 907         API_FCT(get_modpath);
 908         API_FCT(get_modpaths);
 909         API_FCT(get_clientmodpath);
 910         API_FCT(get_gamepath);
 911         API_FCT(get_texturepath);
 912         API_FCT(get_texturepath_share);
 913         API_FCT(get_cache_path);
 914         API_FCT(get_temp_path);
 915         API_FCT(create_dir);
 916         API_FCT(delete_dir);
 917         API_FCT(copy_dir);
 918         API_FCT(is_dir);
 919         //API_FCT(extract_zip); //TODO remove dependency to GuiEngine
 920         API_FCT(may_modify_path);
 921         API_FCT(download_file);
 922         API_FCT(get_min_supp_proto);
 923         API_FCT(get_max_supp_proto);
 924         //API_FCT(gettext); (gettext lib isn't threadsafe)
 925 }