Engine.cpp

   1 /*
   2  *  Engine.cpp
   3  *  openc2e
   4  *
   5  *  Created by Alyssa Milburn on Tue Nov 28 2006.
   6  *  Copyright (c) 2006-2008 Alyssa Milburn. All rights reserved.
   7  *
   8  *  This library is free software; you can redistribute it and/or
   9  *  modify it under the terms of the GNU Lesser General Public
  10  *  License as published by the Free Software Foundation; either
  11  *  version 2 of the License, or (at your option) any later version.
  12  *
  13  *  This library is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  *  Lesser General Public License for more details.
  17  *
  18  */
  19
  20 #include "Room.h"
  21 #include "Engine.h"
  22 #include "World.h"
  23 #include "MetaRoom.h"
  24 #include "caosVM.h" // for setupCommandPointers()
  25 #include "caosScript.h" // for executeNetwork()
  26 #include "PointerAgent.h"
  27 #include "dialect.h" // registerDelegates
  28 #include "NullBackend.h"
  29 #include "NullAudioBackend.h"
  30
  31 #include <boost/filesystem/path.hpp>
  32 #include <boost/filesystem/operations.hpp>
  33 #include <boost/filesystem/convenience.hpp>
  34 #include <boost/program_options.hpp>
  35 #include <boost/format.hpp>
  36 namespace fs = boost::filesystem;
  37 namespace po = boost::program_options;
  38
  39 #ifndef _WIN32
  40 #include <sys/types.h> // passwd*
  41 #include <pwd.h> // getpwuid
  42 #endif
  43
  44 #ifdef _WIN32
  45 #include <shlobj.h>
  46 #endif
  47
  48 Engine engine;
  49
  50 Engine::Engine() {
  51         done = false;
  52         dorendering = true;
  53         fastticks = false;
  54         refreshdisplay = false;
  55
  56         bmprenderer = false;
  57
  58         tickdata = 0;
  59         for (unsigned int i = 0; i < 10; i++) ticktimes[i] = 0;
  60         ticktimeptr = 0;
  61         version = 0; // TODO: something something
  62
  63         srand(time(NULL)); // good a place as any :)
  64
  65         cmdline_enable_sound = true;
  66         cmdline_norun = false;
  67
  68         palette = 0;
  69
  70         addPossibleBackend("null", shared_ptr<Backend>(new NullBackend()));
  71         addPossibleAudioBackend("null", shared_ptr<AudioBackend>(new NullAudioBackend()));
  72 }
  73
  74 Engine::~Engine() {
  75 }
  76
  77 void Engine::addPossibleBackend(std::string s, boost::shared_ptr<Backend> b) {
  78         assert(!backend);
  79         assert(b);
  80         preferred_backend = s;
  81         possible_backends[s] = b;
  82 }
  83
  84 void Engine::addPossibleAudioBackend(std::string s, boost::shared_ptr<AudioBackend> b) {
  85         assert(!audio);
  86         assert(b);
  87         preferred_audiobackend = s;
  88         possible_audiobackends[s] = b;
  89 }
  90
  91 void Engine::setBackend(shared_ptr<Backend> b) {
  92         backend = b;
  93         lasttimestamp = backend->ticks();
  94
  95         // load palette for C1
  96         if (world.gametype == "c1") {
  97                 // TODO: case-sensitivity for the lose
  98                 fs::path palpath(world.data_directories[0] / "/Palettes/palette.dta");
  99                 if (fs::exists(palpath) && !fs::is_directory(palpath)) {
 100                         palette = new unsigned char[768];
 101
 102                         std::ifstream f(palpath.native_directory_string().c_str(), std::ios::binary);
 103                         f >> std::noskipws;
 104                         f.read((char *)palette, 768);
 105
 106                         for (unsigned int i = 0; i < 768; i++) {
 107                                 palette[i] = palette[i] * 4;
 108                         }
 109
 110                         backend->setPalette((uint8 *)palette);
 111                 } else
 112                         throw creaturesException("Couldn't find C1 palette data!");
 113         }
 114 }
 115
 116 std::string Engine::executeNetwork(std::string in) {
 117         // now parse and execute the CAOS we obtained
 118         caosVM vm(0); // needs to be outside 'try' so we can reset outputstream on exception
 119         try {
 120                 std::istringstream s(in);
 121                 caosScript script(world.gametype, "<network>"); // XXX
 122                 script.parse(s);
 123                 script.installScripts();
 124                 std::ostringstream o;
 125                 vm.setOutputStream(o);
 126                 vm.runEntirely(script.installer);
 127                 vm.outputstream = 0; // otherwise would point to dead stack
 128                 return o.str();
 129         } catch (std::exception &e) {
 130                 vm.outputstream = 0; // otherwise would point to dead stack
 131                 return std::string("### EXCEPTION: ") + e.what();
 132         }
 133 }
 134
 135 bool Engine::needsUpdate() {
 136         return (!world.paused) && (fastticks || (backend->ticks() > (tickdata + world.ticktime)));
 137 }
 138
 139 void Engine::update() {
 140         tickdata = backend->ticks();
 141
 142         // tick the world
 143         world.tick();
 144
 145         // draw the world
 146         if (dorendering || refreshdisplay) {
 147                 refreshdisplay = false;
 148
 149                 if (backend->selfRender()) {
 150                         // TODO: this makes race/pace hilariously inaccurate, since render time isn't included
 151                         backend->requestRender();
 152                 } else {
 153                         world.drawWorld();
 154                 }
 155         }
 156
 157         // play C1 music
 158         // TODO: this doesn't seem to actually be every 7 seconds, but actually somewhat random
 159         // TODO: this should be linked to 'real' time, so it doesn't go crazy when game speed is modified
 160         // TODO: is this the right place for this?
 161         if (version == 1 && (world.tickcount % 70) == 0) {
 162                 int piece = 1 + (rand() % 28);
 163                 std::string filename = boost::str(boost::format("MU%02d") % piece);
 164                 boost::shared_ptr<AudioSource> s = world.playAudio(filename, AgentRef(), false, false, true);
 165                 if (s) s->setVolume(0.4f);
 166         }
 167
 168         // update our data for things like pace, race, ticktime, etc
 169         ticktimes[ticktimeptr] = backend->ticks() - tickdata;
 170         ticktimeptr++;
 171         if (ticktimeptr == 10) ticktimeptr = 0;
 172         float avgtime = 0;
 173         for (unsigned int i = 0; i < 10; i++) avgtime += ((float)ticktimes[i] / world.ticktime);
 174         world.pace = avgtime / 10;
 175
 176         world.race = backend->ticks() - lasttimestamp;
 177         lasttimestamp = backend->ticks();
 178 }
 179
 180 bool Engine::tick() {
 181         assert(backend);
 182         backend->handleEvents();
 183
 184         // tick+draw the world, if necessary
 185         bool needupdate = needsUpdate();
 186         if (needupdate)
 187                 update();
 188
 189         processEvents();
 190         if (needupdate)
 191                 handleKeyboardScrolling();
 192
 193         return needupdate;
 194 }
 195
 196 void Engine::handleKeyboardScrolling() {
 197         // keyboard-based scrolling
 198         static float accelspeed = 8, decelspeed = .5, maxspeed = 64;
 199         static float velx = 0;
 200         static float vely = 0;
 201
 202         bool wasdMode = false;
 203         caosVar v = world.variables["engine_wasd"];
 204         if (v.hasInt()) {
 205                 switch (v.getInt()) {
 206                         case 1: // enable if CTRL is held
 207                                 wasdMode = backend->keyDown(17); // CTRL
 208                                 break;
 209                         case 2: // enable unconditionally
 210                                 // (this needs agent support to suppress chat bubbles etc)
 211                                 wasdMode = true;
 212                                 break;
 213                         case 0: // disable
 214                                 wasdMode = false;
 215                                 break;
 216                         default: // disable
 217                                 std::cout << "Warning: engine_wasd_scrolling is set to unknown value " << v.getInt() << std::endl;
 218                                 world.variables["engine_wasd_scrolling"] = caosVar(0);
 219                                 wasdMode = false;
 220                                 break;
 221                 }
 222         }
 223
 224         // check keys
 225         bool leftdown = backend->keyDown(37)
 226                 || (wasdMode && a_down);
 227         bool rightdown = backend->keyDown(39)
 228                 || (wasdMode && d_down);
 229         bool updown = backend->keyDown(38)
 230                 || (wasdMode && w_down);
 231         bool downdown = backend->keyDown(40)
 232                 || (wasdMode && s_down);
 233
 234         if (leftdown)
 235                 velx -= accelspeed;
 236         if (rightdown)
 237                 velx += accelspeed;
 238         if (!leftdown && !rightdown) {
 239                 velx *= decelspeed;
 240                 if (fabs(velx) < 0.1) velx = 0;
 241         }
 242         if (updown)
 243                 vely -= accelspeed;
 244         if (downdown)
 245                 vely += accelspeed;
 246         if (!updown && !downdown) {
 247                 vely *= decelspeed;
 248                 if (fabs(vely) < 0.1) vely = 0;
 249         }
 250
 251         // enforced maximum speed
 252         if (velx >=  maxspeed) velx =  maxspeed;
 253         else if (velx <= -maxspeed) velx = -maxspeed;
 254         if (vely >=  maxspeed) vely =  maxspeed;
 255         else if (vely <= -maxspeed) vely = -maxspeed;
 256
 257         // do the actual movement
 258         if (velx || vely) {
 259                 int adjustx = world.camera.getX(), adjusty = world.camera.getY();
 260                 int adjustbyx = (int)velx, adjustbyy = (int) vely;
 261
 262                 world.camera.moveTo(adjustx + adjustbyx, adjusty + adjustbyy, jump);
 263         }
 264 }
 265
 266 void Engine::processEvents() {
 267         SomeEvent event;
 268         while (backend->pollEvent(event)) {
 269                 switch (event.type) {
 270                         case eventresizewindow:
 271                                 handleResizedWindow(event);
 272                                 break;
 273
 274                         case eventmousemove:
 275                                 handleMouseMove(event);
 276                                 break;
 277
 278                         case eventmousebuttonup:
 279                         case eventmousebuttondown:
 280                                 handleMouseButton(event);
 281                                 break;
 282
 283                         case eventkeydown:
 284                                 handleKeyDown(event);
 285                                 break;
 286
 287                         case eventspecialkeydown:
 288                                 handleSpecialKeyDown(event);
 289                                 break;
 290
 291                         case eventspecialkeyup:
 292                                 handleSpecialKeyUp(event);
 293                                 break;
 294
 295                         case eventquit:
 296                                 done = true;
 297                                 break;
 298
 299                         default:
 300                                 break;
 301                 }
 302         }
 303 }
 304
 305 void Engine::handleResizedWindow(SomeEvent &event) {
 306         // notify agents
 307         for (std::list<boost::shared_ptr<Agent> >::iterator i = world.agents.begin(); i != world.agents.end(); i++) {
 308                 if (!*i) continue;
 309                 (*i)->queueScript(123, 0); // window resized script
 310         }
 311 }
 312
 313 void Engine::handleMouseMove(SomeEvent &event) {
 314         // move the cursor
 315         world.hand()->handleEvent(event);
 316
 317         // notify agents
 318         for (std::list<boost::shared_ptr<Agent> >::iterator i = world.agents.begin(); i != world.agents.end(); i++) {
 319                 if (!*i) continue;
 320                 if ((*i)->imsk_mouse_move) {
 321                         caosVar x; x.setFloat(world.hand()->x);
 322                         caosVar y; y.setFloat(world.hand()->y);
 323                         (*i)->queueScript(75, 0, x, y); // Raw Mouse Move
 324                 }
 325         }
 326 }
 327
 328 void Engine::handleMouseButton(SomeEvent &event) {
 329         // notify agents
 330         for (std::list<boost::shared_ptr<Agent> >::iterator i = world.agents.begin(); i != world.agents.end(); i++) {
 331                 if (!*i) continue;
 332                 if ((event.type == eventmousebuttonup && (*i)->imsk_mouse_up) ||
 333                         (event.type == eventmousebuttondown && (*i)->imsk_mouse_down)) {
 334                         // set the button value as necessary
 335                         caosVar button;
 336                         switch (event.button) { // Backend guarantees that only one button will be set on a mousebuttondown event.
 337                                 // the values here make fuzzie suspicious that c2e combines these events
 338                                 // nornagon seems to think c2e doesn't
 339                                 case buttonleft: button.setInt(1); break;
 340                                 case buttonright: button.setInt(2); break;
 341                                 case buttonmiddle: button.setInt(4); break;
 342                                 default: break;
 343                         }
 344
 345                         // if it was a mouse button we're interested in, then fire the relevant raw event
 346                         if (button.getInt() != 0) {
 347                                 if (event.type == eventmousebuttonup)
 348                                         (*i)->queueScript(77, 0, button); // Raw Mouse Up
 349                                 else
 350                                         (*i)->queueScript(76, 0, button); // Raw Mouse Down
 351                         }
 352                 }
 353                 if ((event.type == eventmousebuttondown &&
 354                         (event.button == buttonwheelup || event.button == buttonwheeldown) &&
 355                         (*i)->imsk_mouse_wheel)) {
 356                         // fire the mouse wheel event with the relevant delta value
 357                         caosVar delta;
 358                         if (event.button == buttonwheeldown)
 359                                 delta.setInt(-120);
 360                         else
 361                                 delta.setInt(120);
 362                         (*i)->queueScript(78, 0, delta); // Raw Mouse Wheel
 363                 }
 364         }
 365
 366         world.hand()->handleEvent(event);
 367 }
 368
 369 void Engine::handleKeyDown(SomeEvent &event) {
 370         switch (event.key) {
 371                 case 'w': w_down = true; break;
 372                 case 'a': a_down = true; break;
 373                 case 's': s_down = true; break;
 374                 case 'd': d_down = true; break;
 375         }
 376
 377         // tell the agent with keyboard focus
 378         if (world.focusagent) {
 379                 TextEntryPart *t = (TextEntryPart *)((CompoundAgent *)world.focusagent.get())->part(world.focuspart);
 380                 if (t)
 381                         t->handleKey(event.key);
 382         }
 383
 384         // notify agents
 385         caosVar k;
 386         k.setInt(event.key);
 387         for (std::list<boost::shared_ptr<Agent> >::iterator i = world.agents.begin(); i != world.agents.end(); i++) {
 388                 if (!*i) continue;
 389                 if ((*i)->imsk_translated_char)
 390                         (*i)->queueScript(79, 0, k); // translated char script
 391         }
 392 }
 393
 394 void Engine::handleSpecialKeyUp(SomeEvent &event) {
 395         switch (event.key) {
 396                 case 0x57:
 397                         w_down = false;
 398                         break;
 399                 case 0x41:
 400                         a_down = false;
 401                         break;
 402                 case 0x53:
 403                         s_down = false;
 404                         break;
 405                 case 0x44:
 406                         d_down = false;
 407                         break;
 408         }
 409 }
 410
 411 void Engine::handleSpecialKeyDown(SomeEvent &event) {
 412         switch (event.key) {
 413                 case 0x57:
 414                         w_down = true;
 415                         break;
 416                 case 0x41:
 417                         a_down = true;
 418                         break;
 419                 case 0x53:
 420                         s_down = true;
 421                         break;
 422                 case 0x44:
 423                         d_down = true;
 424                         break;
 425         }
 426
 427
 428         // handle debug keys, if they're enabled
 429         caosVar v = world.variables["engine_debug_keys"];
 430         if (v.hasInt() && v.getInt() == 1) {
 431                 if (backend->keyDown(16)) { // shift down
 432                         MetaRoom *n; // for pageup/pagedown
 433
 434                         switch (event.key) {
 435                                 case 45: // insert
 436                                         world.showrooms = !world.showrooms;
 437                                         break;
 438
 439                                 case 19: // pause
 440                                         // TODO: debug pause game
 441                                         break;
 442
 443                                 case 32: // space
 444                                         // TODO: force tick
 445                                         break;
 446
 447                                 case 33: // pageup
 448                                         // TODO: previous metaroom
 449                                         if ((world.map.getMetaRoomCount() - 1) == world.camera.getMetaRoom()->id)
 450                                                 break;
 451                                         n = world.map.getMetaRoom(world.camera.getMetaRoom()->id + 1);
 452                                         if (n)
 453                                                 world.camera.goToMetaRoom(n->id);
 454                                         break;
 455
 456                                 case 34: // pagedown
 457                                         // TODO: next metaroom
 458                                         if (world.camera.getMetaRoom()->id == 0)
 459                                                 break;
 460                                         n = world.map.getMetaRoom(world.camera.getMetaRoom()->id - 1);
 461                                         if (n)
 462                                                 world.camera.goToMetaRoom(n->id);
 463                                         break;
 464
 465                                 default: break; // to shut up warnings
 466                         }
 467                 }
 468         }
 469
 470         // tell the agent with keyboard focus
 471         if (world.focusagent) {
 472                 TextEntryPart *t = (TextEntryPart *)((CompoundAgent *)world.focusagent.get())->part(world.focuspart);
 473                 if (t)
 474                         t->handleSpecialKey(event.key);
 475         }
 476
 477         // notify agents
 478         caosVar k;
 479         k.setInt(event.key);
 480         for (std::list<boost::shared_ptr<Agent> >::iterator i = world.agents.begin(); i != world.agents.end(); i++) {
 481                 if (!*i) continue;
 482                 if ((*i)->imsk_key_down)
 483                         (*i)->queueScript(73, 0, k); // key down script
 484         }
 485 }
 486
 487 static const char data_default[] = "./data";
 488
 489 static void opt_version() {
 490         // We already showed the primary version bit, just throw in some random legalese
 491         std::cout <<
 492                 "This is free software; see the source for copying conditions.  There is NO" << std::endl <<
 493                 "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." << std::endl << std::endl <<
 494                 "...please don't sue us." << std::endl;
 495 }
 496
 497 bool Engine::parseCommandLine(int argc, char *argv[]) {
 498         // variables for command-line flags
 499         int optret;
 500         std::vector<std::string> data_vec;
 501
 502         // generate help for backend options
 503         std::string available_backends;
 504         for (std::map<std::string, boost::shared_ptr<Backend> >::iterator i = possible_backends.begin(); i != possible_backends.end(); i++) {
 505                 if (available_backends.empty()) available_backends = i->first;
 506                 else available_backends += ", " + i->first;
 507         }
 508         available_backends = "Select the backend (options: " + available_backends + "), default is " + preferred_backend;
 509
 510         std::string available_audiobackends;
 511         for (std::map<std::string, boost::shared_ptr<AudioBackend> >::iterator i = possible_audiobackends.begin(); i != possible_audiobackends.end(); i++) {
 512                 if (available_audiobackends.empty()) available_audiobackends = i->first;
 513                 else available_audiobackends += ", " + i->first;
 514         }
 515         available_audiobackends = "Select the audio backend (options: " + available_audiobackends + "), default is " + preferred_audiobackend;
 516
 517         // parse the command-line flags
 518         po::options_description desc;
 519         desc.add_options()
 520                 ("help,h", "Display help on command-line options")
 521                 ("version,V", "Display openc2e version")
 522                 ("silent,s", "Disable all sounds")
 523                 ("backend,k", po::value<std::string>(&preferred_backend)->composing(), available_backends.c_str())
 524                 ("audiobackend,o", po::value<std::string>(&preferred_audiobackend)->composing(), available_audiobackends.c_str())
 525                 ("data-path,d", po::value< std::vector<std::string> >(&data_vec)->composing(),
 526                  "Sets or adds a path to a data directory")
 527                 ("bootstrap,b", po::value< std::vector<std::string> >(&cmdline_bootstrap)->composing(),
 528                  "Sets or adds a path or COS file to bootstrap from")
 529                 ("gametype,g", po::value< std::string >(&world.gametype), "Set the game type (c1, c2, cv or c3)")
 530                 ("gamename,m", po::value< std::string >(&gamename), "Set the game name")
 531                 ("norun,n", "Don't run the game, just execute scripts")
 532                 ("autokill,a", "Enable autokill")
 533                 ("autostop", "Enable autostop (or disable it, for CV)")
 534                 ;
 535         po::variables_map vm;
 536         po::store(po::parse_command_line(argc, argv, desc), vm);
 537         po::notify(vm);
 538
 539         cmdline_enable_sound = !vm.count("silent");
 540         cmdline_norun = vm.count("norun");
 541
 542         if (vm.count("help")) {
 543                 std::cout << desc << std::endl;
 544                 return false;
 545         }
 546
 547         if (vm.count("version")) {
 548                 opt_version();
 549                 return false;
 550         }
 551
 552         if (vm.count("autokill")) {
 553                 world.autokill = true;
 554         }
 555
 556         if (vm.count("autostop")) {
 557                 world.autostop = true;
 558         }
 559
 560         if (vm.count("data-path") == 0) {
 561                 std::cout << "Warning: No data path specified, trying default of '" << data_default << "', see --help if you need to specify one." << std::endl;
 562                 data_vec.push_back(data_default);
 563         }
 564
 565         // add all the data directories to the list
 566         for (std::vector<std::string>::iterator i = data_vec.begin(); i != data_vec.end(); i++) {
 567                 fs::path datadir(*i, fs::native);
 568                 if (!fs::exists(datadir)) {
 569                         throw creaturesException("data path '" + *i + "' doesn't exist");
 570                 }
 571                 world.data_directories.push_back(datadir);
 572         }
 573
 574         // make a vague attempt at blacklisting some characters inside the gamename
 575         // (it's used in directory names, registry keys, etc)
 576         std::string invalidchars = "\\/:*?\"<>|";
 577         for (unsigned int i = 0; i < invalidchars.size(); i++) {
 578                 if (gamename.find(invalidchars[i]) != gamename.npos)
 579                         throw creaturesException(std::string("The character ") + invalidchars[i] + " is not valid in a gamename.");
 580         }
 581
 582         return true;
 583 }
 584
 585 bool Engine::initialSetup() {
 586         assert(world.data_directories.size() > 0);
 587
 588         // autodetect gametype if necessary
 589         if (world.gametype.empty()) {
 590                 std::cout << "Warning: No gametype specified, ";
 591                 // TODO: is this sane? especially unsure about about.exe
 592                 if (!world.findFile("Creatures.exe").empty()) {
 593                         std::cout << "found Creatures.exe, assuming C1 (c1)";
 594                         world.gametype = "c1";
 595                 } else if (!world.findFile("Creatures2.exe").empty()) {
 596                         std::cout << "found Creatures2.exe, assuming C2 (c2)";
 597                         world.gametype = "c2";
 598                 } else if (!world.findFile("Sea-Monkeys.ico").empty()) {
 599                         std::cout << "found Sea-Monkeys.ico, assuming Sea-Monkeys (sm)";
 600                         world.gametype = "sm";
 601                 } else if (!world.findFile("about.exe").empty()) {
 602                         std::cout << "found about.exe, assuming CA, CP or CV (cv)";
 603                         world.gametype = "cv";
 604                 } else {
 605                         std::cout << "assuming C3/DS (c3)";
 606                         world.gametype = "c3";
 607                 }
 608                 std::cout << ", see --help if you need to specify one." << std::endl;
 609         }
 610
 611         // set engine version
 612         // TODO: set gamename
 613         if (world.gametype == "c1") {
 614                 if (gamename.empty()) gamename = "Creatures 1";
 615                 version = 1;
 616         } else if (world.gametype == "c2") {
 617                 if (gamename.empty()) gamename = "Creatures 2";
 618                 version = 2;
 619         } else if (world.gametype == "c3") {
 620                 if (gamename.empty()) gamename = "Creatures 3";
 621                 version = 3;
 622         } else if (world.gametype == "cv") {
 623                 if (gamename.empty()) gamename = "Creatures Village";
 624                 version = 3;
 625                 world.autostop = !world.autostop;
 626         } else if (world.gametype == "sm") {
 627                 if (gamename.empty()) gamename = "Sea-Monkeys";
 628                 version = 3;
 629                 bmprenderer = true;
 630         } else
 631                 throw creaturesException(boost::str(boost::format("unknown gametype '%s'!") % world.gametype));
 632
 633         // finally, add our cache directory to the end
 634         world.data_directories.push_back(storageDirectory());
 635
 636         // initial setup
 637         registerDelegates();
 638         std::cout << "* Reading catalogue files..." << std::endl;
 639         world.initCatalogue();
 640         std::cout << "* Initial setup..." << std::endl;
 641         world.init(); // just reads mouse cursor (we want this after the catalogue reading so we don't play "guess the filename")
 642         if (engine.version > 2) {
 643                 std::cout << "* Reading PRAY files..." << std::endl;
 644                 world.praymanager.update();
 645         }
 646
 647         if (cmdline_norun) preferred_backend = "null";
 648         if (preferred_backend != "null") std::cout << "* Initialising backend " << preferred_backend << "..." << std::endl;
 649         shared_ptr<Backend> b = possible_backends[preferred_backend];
 650         if (!b) throw creaturesException("No such backend " + preferred_backend);
 651         b->init(); setBackend(b);
 652         possible_backends.clear();
 653
 654         if (cmdline_norun || !cmdline_enable_sound) preferred_audiobackend = "null";
 655         if (preferred_audiobackend != "null") std::cout << "* Initialising audio backend " << preferred_audiobackend << "..." << std::endl;
 656         shared_ptr<AudioBackend> a = possible_audiobackends[preferred_audiobackend];
 657         if (!a) throw creaturesException("No such audio backend " + preferred_audiobackend);
 658         try{
 659                 a->init(); audio = a;
 660         } catch (creaturesException &e) {
 661                 std::cerr << "* Couldn't initialize backend " << preferred_audiobackend << ": " << e.what() << std::endl << "* Continuing without sound." << std::endl;
 662                 audio = shared_ptr<AudioBackend>(new NullAudioBackend());
 663                 audio->init();
 664         }
 665         possible_audiobackends.clear();
 666
 667         world.camera.setBackend(backend); // TODO: hrr
 668
 669         int listenport = backend->networkInit();
 670         if (listenport != -1) {
 671                 // inform the user of the port used, and store it in the relevant file
 672                 std::cout << "Listening for connections on port " << listenport << "." << std::endl;
 673 #ifndef _WIN32
 674                 fs::path p = fs::path(homeDirectory().native_directory_string() + "/.creaturesengine", fs::native);
 675                 if (!fs::exists(p))
 676                         fs::create_directory(p);
 677                 if (fs::is_directory(p)) {
 678                         std::ofstream f((p.native_directory_string() + "/port").c_str(), std::ios::trunc);
 679                         f << boost::str(boost::format("%d") % listenport);
 680                 }
 681 #endif
 682         }
 683
 684         if (world.data_directories.size() < 3) {
 685                 // TODO: This is a hack for DS, basically. Not sure if it works properly. - fuzzie
 686                 caosVar name; name.setString("engine_no_auxiliary_bootstrap_1");
 687                 caosVar contents; contents.setInt(1);
 688                 eame_variables[name] = contents;
 689         }
 690
 691         // execute the initial scripts!
 692         std::cout << "* Executing initial scripts..." << std::endl;
 693         if (cmdline_bootstrap.size() == 0) {
 694                 world.executeBootstrap(false);
 695         } else {
 696                 std::vector<std::string> scripts;
 697
 698                 for (std::vector< std::string >::iterator bsi = cmdline_bootstrap.begin(); bsi != cmdline_bootstrap.end(); bsi++) {
 699                         fs::path scriptdir(*bsi, fs::native);
 700                         if (!fs::exists(scriptdir)) {
 701                                 std::cerr << "Warning: Couldn't find a specified script directory (trying " << *bsi << ")!\n";
 702                                 continue;
 703                         }
 704                         world.executeBootstrap(scriptdir);
 705                 }
 706         }
 707
 708         // if there aren't any metarooms, we can't run a useful game, the user probably
 709         // wanted to execute a CAOS script or something went badly wrong.
 710         if (!cmdline_norun && world.map.getMetaRoomCount() == 0) {
 711                 shutdown();
 712                 throw creaturesException("No metarooms found in given bootstrap directories or files");
 713         }
 714
 715         std::cout << "* Done startup." << std::endl;
 716
 717         if (cmdline_norun) {
 718                 // TODO: see comment above about avoiding backend when norun is set
 719                 std::cout << "Told not to run the world, so stopping now." << std::endl;
 720                 shutdown();
 721                 return false;
 722         }
 723
 724         return true;
 725 }
 726
 727 void Engine::shutdown() {
 728         world.shutdown();
 729         backend->shutdown();
 730         audio->shutdown();
 731         freeDelegates(); // does nothing if there are none (ie, no call to initialSetup)
 732 }
 733
 734 fs::path Engine::homeDirectory() {
 735         fs::path p;
 736
 737 #ifndef _WIN32
 738         char *envhome = getenv("HOME");
 739         if (envhome)
 740                 p = fs::path(envhome, fs::native);
 741         if ((!envhome) || (!fs::is_directory(p)))
 742                 p = fs::path(getpwuid(getuid())->pw_dir, fs::native);
 743         if (!fs::is_directory(p)) {
 744                 std::cerr << "Can't work out what your home directory is, giving up and using /tmp for now." << std::endl;
 745                 p = fs::path("/tmp", fs::native); // sigh
 746         }
 747 #else
 748         TCHAR szPath[_MAX_PATH];
 749         SHGetSpecialFolderPath(NULL, szPath, CSIDL_PERSONAL, TRUE);
 750
 751         p = fs::path(szPath, fs::native);
 752         if (!fs::exists(p) || !fs::is_directory(p))
 753                 throw creaturesException("Windows reported that your My Documents folder is at '" + std::string(szPath) + "' but there's no directory there!");
 754 #endif
 755
 756         return p;
 757 }
 758
 759 fs::path Engine::storageDirectory() {
 760 #ifndef _WIN32
 761         std::string dirname = "/.openc2e";
 762 #else
 763         std::string dirname = "/My Games";
 764 #endif
 765
 766         // main storage dir
 767         fs::path p = fs::path(homeDirectory().native_directory_string() + dirname, fs::native);
 768         if (!fs::exists(p))
 769                 fs::create_directory(p);
 770         else if (!fs::is_directory(p))
 771                 throw creaturesException("Your openc2e data directory " + p.native_directory_string() + " is a file, not a directory. That's bad.");
 772
 773         // game-specific storage dir
 774         p = fs::path(p.native_directory_string() + std::string("/" + gamename), fs::native);
 775         if (!fs::exists(p))
 776                 fs::create_directory(p);
 777         else if (!fs::is_directory(p))
 778                 throw creaturesException("Your openc2e game data directory " + p.native_directory_string() + " is a file, not a directory. That's bad.");
 779
 780         return p;
 781 }
 782
 783 /* vim: set noet: */