src/guiEngine.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 "guiEngine.h"
  21
  22 #include "scripting_mainmenu.h"
  23 #include "config.h"
  24 #include "version.h"
  25 #include "porting.h"
  26 #include "filesys.h"
  27 #include "main.h"
  28 #include "settings.h"
  29 #include "guiMainMenu.h"
  30 #include "sound.h"
  31 #include "sound_openal.h"
  32 #include "clouds.h"
  33
  34 #include <IGUIStaticText.h>
  35 #include <ICameraSceneNode.h>
  36
  37 #if USE_CURL
  38 #include <curl/curl.h>
  39 #endif
  40
  41 /******************************************************************************/
  42 /** TextDestGuiEngine                                                         */
  43 /******************************************************************************/
  44 TextDestGuiEngine::TextDestGuiEngine(GUIEngine* engine)
  45 {
  46         m_engine = engine;
  47 }
  48
  49 /******************************************************************************/
  50 void TextDestGuiEngine::gotText(std::map<std::string, std::string> fields)
  51 {
  52         m_engine->getScriptIface()->handleMainMenuButtons(fields);
  53 }
  54
  55 /******************************************************************************/
  56 void TextDestGuiEngine::gotText(std::wstring text)
  57 {
  58         m_engine->getScriptIface()->handleMainMenuEvent(wide_to_narrow(text));
  59 }
  60
  61 /******************************************************************************/
  62 /** MenuTextureSource                                                         */
  63 /******************************************************************************/
  64 MenuTextureSource::MenuTextureSource(video::IVideoDriver *driver)
  65 {
  66         m_driver = driver;
  67 }
  68
  69 /******************************************************************************/
  70 MenuTextureSource::~MenuTextureSource()
  71 {
  72         for (std::set<std::string>::iterator it = m_to_delete.begin();
  73                         it != m_to_delete.end(); ++it) {
  74                 const char *tname = (*it).c_str();
  75                 video::ITexture *texture = m_driver->getTexture(tname);
  76                 m_driver->removeTexture(texture);
  77         }
  78 }
  79
  80 /******************************************************************************/
  81 video::ITexture* MenuTextureSource::getTexture(const std::string &name, u32 *id)
  82 {
  83         if(id)
  84                 *id = 0;
  85         if(name.empty())
  86                 return NULL;
  87         m_to_delete.insert(name);
  88         return m_driver->getTexture(name.c_str());
  89 }
  90
  91 /******************************************************************************/
  92 /** MenuMusicFetcher                                                          */
  93 /******************************************************************************/
  94 void MenuMusicFetcher::fetchSounds(const std::string &name,
  95                         std::set<std::string> &dst_paths,
  96                         std::set<std::string> &dst_datas)
  97 {
  98         if(m_fetched.count(name))
  99                 return;
 100         m_fetched.insert(name);
 101         std::string base;
 102         base = porting::path_share + DIR_DELIM + "sounds";
 103         dst_paths.insert(base + DIR_DELIM + name + ".ogg");
 104         int i;
 105         for(i=0; i<10; i++)
 106                 dst_paths.insert(base + DIR_DELIM + name + "."+itos(i)+".ogg");
 107         base = porting::path_user + DIR_DELIM + "sounds";
 108         dst_paths.insert(base + DIR_DELIM + name + ".ogg");
 109         for(i=0; i<10; i++)
 110                 dst_paths.insert(base + DIR_DELIM + name + "."+itos(i)+".ogg");
 111 }
 112
 113 /******************************************************************************/
 114 /** GUIEngine                                                                 */
 115 /******************************************************************************/
 116 GUIEngine::GUIEngine(   irr::IrrlichtDevice* dev,
 117                                                 gui::IGUIElement* parent,
 118                                                 IMenuManager *menumgr,
 119                                                 scene::ISceneManager* smgr,
 120                                                 MainMenuData* data,
 121                                                 bool& kill) :
 122         m_device(dev),
 123         m_parent(parent),
 124         m_menumanager(menumgr),
 125         m_smgr(smgr),
 126         m_data(data),
 127         m_texture_source(NULL),
 128         m_sound_manager(NULL),
 129         m_formspecgui(0),
 130         m_buttonhandler(0),
 131         m_menu(0),
 132         m_kill(kill),
 133         m_startgame(false),
 134         m_script(0),
 135         m_scriptdir(""),
 136         m_irr_toplefttext(0),
 137         m_clouds_enabled(true),
 138         m_cloud()
 139 {
 140         //initialize texture pointers
 141         for (unsigned int i = 0; i < TEX_LAYER_MAX; i++) {
 142                 m_textures[i] = 0;
 143         }
 144         // is deleted by guiformspec!
 145         m_buttonhandler = new TextDestGuiEngine(this);
 146
 147         //create texture source
 148         m_texture_source = new MenuTextureSource(m_device->getVideoDriver());
 149
 150         //create soundmanager
 151         MenuMusicFetcher soundfetcher;
 152 #if USE_SOUND
 153         m_sound_manager = createOpenALSoundManager(&soundfetcher);
 154 #endif
 155         if(!m_sound_manager)
 156                 m_sound_manager = &dummySoundManager;
 157
 158         //create topleft header
 159         core::rect<s32> rect(0, 0, 500, 40);
 160         rect += v2s32(4, 0);
 161         std::string t = std::string("Minetest ") + minetest_version_hash;
 162
 163         m_irr_toplefttext =
 164                 m_device->getGUIEnvironment()->addStaticText(narrow_to_wide(t).c_str(),
 165                 rect,false,true,0,-1);
 166
 167         //create formspecsource
 168         m_formspecgui = new FormspecFormSource("",&m_formspecgui);
 169
 170         /* Create menu */
 171         m_menu =
 172                 new GUIFormSpecMenu(    m_device,
 173                                                                 m_parent,
 174                                                                 -1,
 175                                                                 m_menumanager,
 176                                                                 0 /* &client */,
 177                                                                 0 /* gamedef */,
 178                                                                 m_texture_source);
 179
 180         m_menu->allowClose(false);
 181         m_menu->lockSize(true,v2u32(800,600));
 182         m_menu->setFormSource(m_formspecgui);
 183         m_menu->setTextDest(m_buttonhandler);
 184
 185         // Initialize scripting
 186
 187         infostream<<"GUIEngine: Initializing Lua"<<std::endl;
 188
 189         m_script = new MainMenuScripting(this);
 190
 191         try {
 192                 if (m_data->errormessage != "")
 193                 {
 194                         m_script->setMainMenuErrorMessage(m_data->errormessage);
 195                         m_data->errormessage = "";
 196                 }
 197
 198                 if (!loadMainMenuScript())
 199                         assert("no future without mainmenu" == 0);
 200
 201                 run();
 202         }
 203         catch(LuaError &e) {
 204                 errorstream << "MAINMENU ERROR: " << e.what() << std::endl;
 205                 m_data->errormessage = e.what();
 206         }
 207
 208         m_menu->quitMenu();
 209         m_menu->drop();
 210         m_menu = 0;
 211 }
 212
 213 /******************************************************************************/
 214 bool GUIEngine::loadMainMenuScript()
 215 {
 216         // Try custom menu script (main_menu_script)
 217
 218         std::string menuscript = g_settings->get("main_menu_script");
 219         if(menuscript != "") {
 220                 m_scriptdir = fs::RemoveLastPathComponent(menuscript);
 221
 222                 if(m_script->loadMod(menuscript, "__custommenu")) {
 223                         // custom menu script loaded
 224                         return true;
 225                 }
 226                 else {
 227                         infostream
 228                                 << "GUIEngine: execution of custom menu failed!"
 229                                 << std::endl
 230                                 << "\tfalling back to builtin menu"
 231                                 << std::endl;
 232                 }
 233         }
 234
 235         // Try builtin menu script (main_menu_script)
 236
 237         std::string builtin_menuscript =
 238                         porting::path_share + DIR_DELIM + "builtin"
 239                                 + DIR_DELIM + "mainmenu.lua";
 240
 241         m_scriptdir = fs::RemoveRelativePathComponents(
 242                         fs::RemoveLastPathComponent(builtin_menuscript));
 243
 244         if(m_script->loadMod(builtin_menuscript, "__builtinmenu")) {
 245                 // builtin menu script loaded
 246                 return true;
 247         }
 248         else {
 249                 errorstream
 250                         << "GUIEngine: unable to load builtin menu"
 251                         << std::endl;
 252         }
 253
 254         return false;
 255 }
 256
 257 /******************************************************************************/
 258 void GUIEngine::run()
 259 {
 260
 261         // Always create clouds because they may or may not be
 262         // needed based on the game selected
 263         video::IVideoDriver* driver = m_device->getVideoDriver();
 264
 265         cloudInit();
 266
 267         while(m_device->run() && (!m_startgame) && (!m_kill)) {
 268                 driver->beginScene(true, true, video::SColor(255,140,186,250));
 269
 270                 if (m_clouds_enabled)
 271                 {
 272                         cloudPreProcess();
 273                         drawOverlay(driver);
 274                 }
 275                 else
 276                         drawBackground(driver);
 277
 278                 drawHeader(driver);
 279                 drawFooter(driver);
 280
 281                 m_device->getGUIEnvironment()->drawAll();
 282
 283                 driver->endScene();
 284
 285                 if (m_clouds_enabled)
 286                         cloudPostProcess();
 287                 else
 288                         sleep_ms(25);
 289         }
 290 }
 291
 292 /******************************************************************************/
 293 GUIEngine::~GUIEngine()
 294 {
 295         video::IVideoDriver* driver = m_device->getVideoDriver();
 296         assert(driver != 0);
 297
 298         if(m_sound_manager != &dummySoundManager){
 299                 delete m_sound_manager;
 300                 m_sound_manager = NULL;
 301         }
 302
 303         //TODO: clean up m_menu here
 304
 305         infostream<<"GUIEngine: Deinitializing scripting"<<std::endl;
 306         delete m_script;
 307
 308         m_irr_toplefttext->setText(L"");
 309
 310         //clean up texture pointers
 311         for (unsigned int i = 0; i < TEX_LAYER_MAX; i++) {
 312                 if (m_textures[i] != 0)
 313                         driver->removeTexture(m_textures[i]);
 314         }
 315
 316         delete m_texture_source;
 317
 318         if (m_cloud.clouds)
 319                 m_cloud.clouds->drop();
 320 }
 321
 322 /******************************************************************************/
 323 void GUIEngine::cloudInit()
 324 {
 325         m_cloud.clouds = new Clouds(m_smgr->getRootSceneNode(),
 326                         m_smgr, -1, rand(), 100);
 327         m_cloud.clouds->update(v2f(0, 0), video::SColor(255,200,200,255));
 328
 329         m_cloud.camera = m_smgr->addCameraSceneNode(0,
 330                                 v3f(0,0,0), v3f(0, 60, 100));
 331         m_cloud.camera->setFarValue(10000);
 332
 333         m_cloud.lasttime = m_device->getTimer()->getTime();
 334 }
 335
 336 /******************************************************************************/
 337 void GUIEngine::cloudPreProcess()
 338 {
 339         u32 time = m_device->getTimer()->getTime();
 340
 341         if(time > m_cloud.lasttime)
 342                 m_cloud.dtime = (time - m_cloud.lasttime) / 1000.0;
 343         else
 344                 m_cloud.dtime = 0;
 345
 346         m_cloud.lasttime = time;
 347
 348         m_cloud.clouds->step(m_cloud.dtime*3);
 349         m_cloud.clouds->render();
 350         m_smgr->drawAll();
 351 }
 352
 353 /******************************************************************************/
 354 void GUIEngine::cloudPostProcess()
 355 {
 356         float fps_max = g_settings->getFloat("fps_max");
 357         // Time of frame without fps limit
 358         float busytime;
 359         u32 busytime_u32;
 360         // not using getRealTime is necessary for wine
 361         u32 time = m_device->getTimer()->getTime();
 362         if(time > m_cloud.lasttime)
 363                 busytime_u32 = time - m_cloud.lasttime;
 364         else
 365                 busytime_u32 = 0;
 366         busytime = busytime_u32 / 1000.0;
 367
 368         // FPS limiter
 369         u32 frametime_min = 1000./fps_max;
 370
 371         if(busytime_u32 < frametime_min) {
 372                 u32 sleeptime = frametime_min - busytime_u32;
 373                 m_device->sleep(sleeptime);
 374         }
 375 }
 376
 377 /******************************************************************************/
 378 void GUIEngine::drawBackground(video::IVideoDriver* driver)
 379 {
 380         v2u32 screensize = driver->getScreenSize();
 381
 382         video::ITexture* texture = m_textures[TEX_LAYER_BACKGROUND];
 383
 384         /* If no texture, draw background of solid color */
 385         if(!texture){
 386                 video::SColor color(255,80,58,37);
 387                 core::rect<s32> rect(0, 0, screensize.X, screensize.Y);
 388                 driver->draw2DRectangle(color, rect, NULL);
 389                 return;
 390         }
 391
 392         /* Draw background texture */
 393         v2u32 sourcesize = texture->getSize();
 394         driver->draw2DImage(texture,
 395                 core::rect<s32>(0, 0, screensize.X, screensize.Y),
 396                 core::rect<s32>(0, 0, sourcesize.X, sourcesize.Y),
 397                 NULL, NULL, true);
 398 }
 399
 400 /******************************************************************************/
 401 void GUIEngine::drawOverlay(video::IVideoDriver* driver)
 402 {
 403         v2u32 screensize = driver->getScreenSize();
 404
 405         video::ITexture* texture = m_textures[TEX_LAYER_OVERLAY];
 406
 407         /* If no texture, draw background of solid color */
 408         if(!texture)
 409                 return;
 410
 411         /* Draw background texture */
 412         v2u32 sourcesize = texture->getSize();
 413         driver->draw2DImage(texture,
 414                 core::rect<s32>(0, 0, screensize.X, screensize.Y),
 415                 core::rect<s32>(0, 0, sourcesize.X, sourcesize.Y),
 416                 NULL, NULL, true);
 417 }
 418
 419 /******************************************************************************/
 420 void GUIEngine::drawHeader(video::IVideoDriver* driver)
 421 {
 422         core::dimension2d<u32> screensize = driver->getScreenSize();
 423
 424         video::ITexture* texture = m_textures[TEX_LAYER_HEADER];
 425
 426         /* If no texture, draw nothing */
 427         if(!texture)
 428                 return;
 429
 430         f32 mult = (((f32)screensize.Width / 2)) /
 431                         ((f32)texture->getOriginalSize().Width);
 432
 433         v2s32 splashsize(((f32)texture->getOriginalSize().Width) * mult,
 434                         ((f32)texture->getOriginalSize().Height) * mult);
 435
 436         // Don't draw the header is there isn't enough room
 437         s32 free_space = (((s32)screensize.Height)-320)/2;
 438
 439         if (free_space > splashsize.Y) {
 440                 core::rect<s32> splashrect(0, 0, splashsize.X, splashsize.Y);
 441                 splashrect += v2s32((screensize.Width/2)-(splashsize.X/2),
 442                                 ((free_space/2)-splashsize.Y/2)+10);
 443
 444         video::SColor bgcolor(255,50,50,50);
 445
 446         driver->draw2DImage(texture, splashrect,
 447                 core::rect<s32>(core::position2d<s32>(0,0),
 448                 core::dimension2di(texture->getSize())),
 449                 NULL, NULL, true);
 450         }
 451 }
 452
 453 /******************************************************************************/
 454 void GUIEngine::drawFooter(video::IVideoDriver* driver)
 455 {
 456         core::dimension2d<u32> screensize = driver->getScreenSize();
 457
 458         video::ITexture* texture = m_textures[TEX_LAYER_FOOTER];
 459
 460         /* If no texture, draw nothing */
 461         if(!texture)
 462                 return;
 463
 464         f32 mult = (((f32)screensize.Width)) /
 465                         ((f32)texture->getOriginalSize().Width);
 466
 467         v2s32 footersize(((f32)texture->getOriginalSize().Width) * mult,
 468                         ((f32)texture->getOriginalSize().Height) * mult);
 469
 470         // Don't draw the footer if there isn't enough room
 471         s32 free_space = (((s32)screensize.Height)-320)/2;
 472
 473         if (free_space > footersize.Y) {
 474                 core::rect<s32> rect(0,0,footersize.X,footersize.Y);
 475                 rect += v2s32(screensize.Width/2,screensize.Height-footersize.Y);
 476                 rect -= v2s32(footersize.X/2, 0);
 477
 478                 driver->draw2DImage(texture, rect,
 479                         core::rect<s32>(core::position2d<s32>(0,0),
 480                         core::dimension2di(texture->getSize())),
 481                         NULL, NULL, true);
 482         }
 483 }
 484
 485 /******************************************************************************/
 486 bool GUIEngine::setTexture(texture_layer layer,std::string texturepath) {
 487
 488         video::IVideoDriver* driver = m_device->getVideoDriver();
 489         assert(driver != 0);
 490
 491         if (m_textures[layer] != 0)
 492         {
 493                 driver->removeTexture(m_textures[layer]);
 494                 m_textures[layer] = 0;
 495         }
 496
 497         if ((texturepath == "") || !fs::PathExists(texturepath))
 498                 return false;
 499
 500         m_textures[layer] = driver->getTexture(texturepath.c_str());
 501
 502         if (m_textures[layer] == 0) return false;
 503
 504         return true;
 505 }
 506
 507 /******************************************************************************/
 508 #if USE_CURL
 509 static size_t WriteCallback(void *contents, size_t size, size_t nmemb, void *userp)
 510 {
 511         FILE* targetfile = (FILE*) userp;
 512         fwrite(contents,size,nmemb,targetfile);
 513         return size * nmemb;
 514 }
 515 #endif
 516 bool GUIEngine::downloadFile(std::string url,std::string target) {
 517 #if USE_CURL
 518         //download file via curl
 519         CURL *curl;
 520
 521         curl = curl_easy_init();
 522
 523         if (curl)
 524         {
 525                 CURLcode res;
 526                 bool retval = true;
 527
 528                 FILE* targetfile = fopen(target.c_str(),"wb");
 529
 530                 if (targetfile) {
 531                         curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);
 532                         curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
 533                         curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
 534                         curl_easy_setopt(curl, CURLOPT_WRITEDATA, targetfile);
 535
 536                         res = curl_easy_perform(curl);
 537                         if (res != CURLE_OK) {
 538                                 errorstream << "File at url \"" << url
 539                                         <<"\" not found (" << curl_easy_strerror(res) << ")" <<std::endl;
 540                                 retval = false;
 541                         }
 542                         fclose(targetfile);
 543                 }
 544                 else {
 545                         retval = false;
 546                 }
 547
 548                 curl_easy_cleanup(curl);
 549                 return retval;
 550         }
 551 #endif
 552         return false;
 553 }
 554
 555 /******************************************************************************/
 556 void GUIEngine::setTopleftText(std::string append) {
 557         std::string toset = std::string("Minetest ") + minetest_version_hash;
 558
 559         if (append != "") {
 560                 toset += " / ";
 561                 toset += append;
 562         }
 563
 564         m_irr_toplefttext->setText(narrow_to_wide(toset).c_str());
 565 }
 566
 567 /******************************************************************************/
 568 s32 GUIEngine::playSound(SimpleSoundSpec spec, bool looped)
 569 {
 570         s32 handle = m_sound_manager->playSound(spec, looped);
 571         return handle;
 572 }
 573
 574 /******************************************************************************/
 575 void GUIEngine::stopSound(s32 handle)
 576 {
 577         m_sound_manager->stopSound(handle);
 578 }