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 #include "SFCFile.h"
  31
  32 #include <boost/filesystem/path.hpp>
  33 #include <boost/filesystem/operations.hpp>
  34 #include <boost/filesystem/convenience.hpp>
  35 #include <boost/program_options.hpp>
  36 #include <boost/format.hpp>
  37 namespace fs = boost::filesystem;
  38 namespace po = boost::program_options;
  39
  40 #ifndef _WIN32
  41 #include <sys/types.h> // passwd*
  42 #include <pwd.h> // getpwuid
  43 #endif
  44
  45 #ifdef _WIN32
  46 #include <shlobj.h>
  47 #include <windows.h>
  48 #endif
  49
  50 Engine engine;
  51
  52 Engine::Engine() {
  53         done = false;
  54         dorendering = true;
  55         fastticks = false;
  56         refreshdisplay = false;
  57
  58         bmprenderer = false;
  59
  60         tickdata = 0;
  61         for (unsigned int i = 0; i < 10; i++) ticktimes[i] = 0;
  62         ticktimeptr = 0;
  63         version = 0; // TODO: something something
  64
  65         srand(time(NULL)); // good a place as any :)
  66
  67         cmdline_enable_sound = true;
  68         cmdline_norun = false;
  69
  70         palette = 0;
  71
  72         addPossibleBackend("null", shared_ptr<Backend>(new NullBackend()));
  73         addPossibleAudioBackend("null", shared_ptr<AudioBackend>(new NullAudioBackend()));
  74 }
  75
  76 Engine::~Engine() {
  77 }
  78
  79 void Engine::addPossibleBackend(std::string s, boost::shared_ptr<Backend> b) {
  80         assert(!backend);
  81         assert(b);
  82         preferred_backend = s;
  83         possible_backends[s] = b;
  84 }
  85
  86 void Engine::addPossibleAudioBackend(std::string s, boost::shared_ptr<AudioBackend> b) {
  87         assert(!audio);
  88         assert(b);
  89         preferred_audiobackend = s;
  90         possible_audiobackends[s] = b;
  91 }
  92
  93 void Engine::setBackend(shared_ptr<Backend> b) {
  94         backend = b;
  95         lasttimestamp = backend->ticks();
  96
  97         // load palette for C1
  98         if (world.gametype == "c1") {
  99                 // TODO: case-sensitivity for the lose
 100                 fs::path palpath(world.data_directories[0] / "/Palettes/palette.dta");
 101                 if (fs::exists(palpath) && !fs::is_directory(palpath)) {
 102                         palette = new unsigned char[768];
 103
 104                         std::ifstream f(palpath.native_directory_string().c_str(), std::ios::binary);
 105                         f >> std::noskipws;
 106                         f.read((char *)palette, 768);
 107
 108                         for (unsigned int i = 0; i < 768; i++) {
 109                                 palette[i] = palette[i] * 4;
 110                         }
 111
 112                         backend->setPalette((uint8 *)palette);
 113                 } else
 114                         throw creaturesException("Couldn't find C1 palette data!");
 115         }
 116 }
 117
 118 std::string Engine::executeNetwork(std::string in) {
 119         // now parse and execute the CAOS we obtained
 120         caosVM vm(0); // needs to be outside 'try' so we can reset outputstream on exception
 121         try {
 122                 std::istringstream s(in);
 123                 caosScript script(world.gametype, "<network>"); // XXX
 124                 script.parse(s);
 125                 script.installScripts();
 126                 std::ostringstream o;
 127                 vm.setOutputStream(o);
 128                 vm.runEntirely(script.installer);
 129                 vm.outputstream = 0; // otherwise would point to dead stack
 130                 return o.str();
 131         } catch (std::exception &e) {
 132                 vm.outputstream = 0; // otherwise would point to dead stack
 133                 return std::string("### EXCEPTION: ") + e.what();
 134         }
 135 }
 136
 137 bool Engine::needsUpdate() {
 138         return (!world.paused) && (fastticks || (backend->ticks() > (tickdata + world.ticktime)));
 139 }
 140
 141 void Engine::update() {
 142         tickdata = backend->ticks();
 143
 144         // tick the world
 145         world.tick();
 146
 147         // draw the world
 148         if (dorendering || refreshdisplay) {
 149                 refreshdisplay = false;
 150
 151                 if (backend->selfRender()) {
 152                         // TODO: this makes race/pace hilariously inaccurate, since render time isn't included
 153                         backend->requestRender();
 154                 } else {
 155                         world.drawWorld();
 156                 }
 157         }
 158
 159         // play C1 music
 160         // TODO: this doesn't seem to actually be every 7 seconds, but actually somewhat random
 161         // TODO: this should be linked to 'real' time, so it doesn't go crazy when game speed is modified
 162         // TODO: is this the right place for this?
 163         if (version == 1 && (world.tickcount % 70) == 0) {
 164                 int piece = 1 + (rand() % 28);
 165                 std::string filename = boost::str(boost::format("MU%02d") % piece);
 166                 boost::shared_ptr<AudioSource> s = world.playAudio(filename, AgentRef(), false, false, true);
 167                 if (s) s->setVolume(0.4f);
 168         }
 169
 170         // update our data for things like pace, race, ticktime, etc
 171         ticktimes[ticktimeptr] = backend->ticks() - tickdata;
 172         ticktimeptr++;
 173         if (ticktimeptr == 10) ticktimeptr = 0;
 174         float avgtime = 0;
 175         for (unsigned int i = 0; i < 10; i++) avgtime += ((float)ticktimes[i] / world.ticktime);
 176         world.pace = avgtime / 10;
 177
 178         world.race = backend->ticks() - lasttimestamp;
 179         lasttimestamp = backend->ticks();
 180 }
 181
 182 bool Engine::tick() {
 183         assert(backend);
 184         backend->handleEvents();
 185
 186         // tick+draw the world, if necessary
 187         bool needupdate = needsUpdate();
 188         if (needupdate)
 189                 update();
 190
 191         processEvents();
 192         if (needupdate)
 193                 handleKeyboardScrolling();
 194
 195         return needupdate;
 196 }
 197
 198 void Engine::handleKeyboardScrolling() {
 199         // keyboard-based scrolling
 200         static float accelspeed = 8, decelspeed = .5, maxspeed = 64;
 201         static float velx = 0;
 202         static float vely = 0;
 203
 204         bool wasdMode = false;
 205         caosVar v = world.variables["engine_wasd"];
 206         if (v.hasInt()) {
 207                 switch (v.getInt()) {
 208                         case 1: // enable if CTRL is held
 209                                 wasdMode = backend->keyDown(17); // CTRL
 210                                 break;
 211                         case 2: // enable unconditionally
 212                                 // (this needs agent support to suppress chat bubbles etc)
 213                                 wasdMode = true;
 214                                 break;
 215                         case 0: // disable
 216                                 wasdMode = false;
 217                                 break;
 218                         default: // disable
 219                                 std::cout << "Warning: engine_wasd_scrolling is set to unknown value " << v.getInt() << std::endl;
 220                                 world.variables["engine_wasd_scrolling"] = caosVar(0);
 221                                 wasdMode = false;
 222                                 break;
 223                 }
 224         }
 225
 226         // check keys
 227         bool leftdown = backend->keyDown(37)
 228                 || (wasdMode && a_down);
 229         bool rightdown = backend->keyDown(39)
 230                 || (wasdMode && d_down);
 231         bool updown = backend->keyDown(38)
 232                 || (wasdMode && w_down);
 233         bool downdown = backend->keyDown(40)
 234                 || (wasdMode && s_down);
 235
 236         if (leftdown)
 237                 velx -= accelspeed;
 238         if (rightdown)
 239                 velx += accelspeed;
 240         if (!leftdown && !rightdown) {
 241                 velx *= decelspeed;
 242                 if (fabs(velx) < 0.1) velx = 0;
 243         }
 244         if (updown)
 245                 vely -= accelspeed;
 246         if (downdown)
 247                 vely += accelspeed;
 248         if (!updown && !downdown) {
 249                 vely *= decelspeed;
 250                 if (fabs(vely) < 0.1) vely = 0;
 251         }
 252
 253         // enforced maximum speed
 254         if (velx >=  maxspeed) velx =  maxspeed;
 255         else if (velx <= -maxspeed) velx = -maxspeed;
 256         if (vely >=  maxspeed) vely =  maxspeed;
 257         else if (vely <= -maxspeed) vely = -maxspeed;
 258
 259         // do the actual movement
 260         if (velx || vely) {
 261                 int adjustx = world.camera.getX(), adjusty = world.camera.getY();
 262                 int adjustbyx = (int)velx, adjustbyy = (int) vely;
 263
 264                 world.camera.moveTo(adjustx + adjustbyx, adjusty + adjustbyy, jump);
 265         }
 266 }
 267
 268 void Engine::processEvents() {
 269         SomeEvent event;
 270         while (backend->pollEvent(event)) {
 271                 switch (event.type) {
 272                         case eventresizewindow:
 273                                 handleResizedWindow(event);
 274                                 break;
 275
 276                         case eventmousemove:
 277                                 handleMouseMove(event);
 278                                 break;
 279
 280                         case eventmousebuttonup:
 281                         case eventmousebuttondown:
 282                                 handleMouseButton(event);
 283                                 break;
 284
 285                         case eventkeydown:
 286                                 handleKeyDown(event);
 287                                 break;
 288
 289                         case eventspecialkeydown:
 290                                 handleSpecialKeyDown(event);
 291                                 break;
 292
 293                         case eventspecialkeyup:
 294                                 handleSpecialKeyUp(event);
 295                                 break;
 296
 297                         case eventquit:
 298                                 done = true;
 299                                 break;
 300
 301                         default:
 302                                 break;
 303                 }
 304         }
 305 }
 306
 307 void Engine::handleResizedWindow(SomeEvent &event) {
 308         // notify agents
 309         for (std::list<boost::shared_ptr<Agent> >::iterator i = world.agents.begin(); i != world.agents.end(); i++) {
 310                 if (!*i) continue;
 311                 (*i)->queueScript(123, 0); // window resized script
 312         }
 313 }
 314
 315 void Engine::handleMouseMove(SomeEvent &event) {
 316         // move the cursor
 317         world.hand()->handleEvent(event);
 318
 319         // notify agents
 320         for (std::list<boost::shared_ptr<Agent> >::iterator i = world.agents.begin(); i != world.agents.end(); i++) {
 321                 if (!*i) continue;
 322                 if ((*i)->imsk_mouse_move) {
 323                         caosVar x; x.setFloat(world.hand()->pointerX());
 324                         caosVar y; y.setFloat(world.hand()->pointerY());
 325                         (*i)->queueScript(75, 0, x, y); // Raw Mouse Move
 326                 }
 327         }
 328 }
 329
 330 void Engine::handleMouseButton(SomeEvent &event) {
 331         // notify agents
 332         for (std::list<boost::shared_ptr<Agent> >::iterator i = world.agents.begin(); i != world.agents.end(); i++) {
 333                 if (!*i) continue;
 334                 if ((event.type == eventmousebuttonup && (*i)->imsk_mouse_up) ||
 335                         (event.type == eventmousebuttondown && (*i)->imsk_mouse_down)) {
 336                         // set the button value as necessary
 337                         caosVar button;
 338                         switch (event.button) { // Backend guarantees that only one button will be set on a mousebuttondown event.
 339                                 // the values here make fuzzie suspicious that c2e combines these events
 340                                 // nornagon seems to think c2e doesn't
 341                                 case buttonleft: button.setInt(1); break;
 342                                 case buttonright: button.setInt(2); break;
 343                                 case buttonmiddle: button.setInt(4); break;
 344                                 default: break;
 345                         }
 346
 347                         // if it was a mouse button we're interested in, then fire the relevant raw event
 348                         if (button.getInt() != 0) {
 349                                 if (event.type == eventmousebuttonup)
 350                                         (*i)->queueScript(77, 0, button); // Raw Mouse Up
 351                                 else
 352                                         (*i)->queueScript(76, 0, button); // Raw Mouse Down
 353                         }
 354                 }
 355                 if ((event.type == eventmousebuttondown &&
 356                         (event.button == buttonwheelup || event.button == buttonwheeldown) &&
 357                         (*i)->imsk_mouse_wheel)) {
 358                         // fire the mouse wheel event with the relevant delta value
 359                         caosVar delta;
 360                         if (event.button == buttonwheeldown)
 361                                 delta.setInt(-120);
 362                         else
 363                                 delta.setInt(120);
 364                         (*i)->queueScript(78, 0, delta); // Raw Mouse Wheel
 365                 }
 366         }
 367
 368         world.hand()->handleEvent(event);
 369 }
 370
 371 void Engine::handleKeyDown(SomeEvent &event) {
 372         switch (event.key) {
 373                 case 'w': w_down = true; break;
 374                 case 'a': a_down = true; break;
 375                 case 's': s_down = true; break;
 376                 case 'd': d_down = true; break;
 377         }
 378
 379         // tell the agent with keyboard focus
 380         if (world.focusagent) {
 381                 TextEntryPart *t = (TextEntryPart *)((CompoundAgent *)world.focusagent.get())->part(world.focuspart);
 382                 if (t)
 383                         t->handleKey(event.key);
 384         }
 385
 386         // notify agents
 387         caosVar k;
 388         k.setInt(event.key);
 389         for (std::list<boost::shared_ptr<Agent> >::iterator i = world.agents.begin(); i != world.agents.end(); i++) {
 390                 if (!*i) continue;
 391                 if ((*i)->imsk_translated_char)
 392                         (*i)->queueScript(79, 0, k); // translated char script
 393         }
 394 }
 395
 396 void Engine::handleSpecialKeyUp(SomeEvent &event) {
 397         switch (event.key) {
 398                 case 0x57:
 399                         w_down = false;
 400                         break;
 401                 case 0x41:
 402                         a_down = false;
 403                         break;
 404                 case 0x53:
 405                         s_down = false;
 406                         break;
 407                 case 0x44:
 408                         d_down = false;
 409                         break;
 410         }
 411 }
 412
 413 void Engine::handleSpecialKeyDown(SomeEvent &event) {
 414         switch (event.key) {
 415                 case 0x57:
 416                         w_down = true;
 417                         break;
 418                 case 0x41:
 419                         a_down = true;
 420                         break;
 421                 case 0x53:
 422                         s_down = true;
 423                         break;
 424                 case 0x44:
 425                         d_down = true;
 426                         break;
 427         }
 428
 429
 430         // handle debug keys, if they're enabled
 431         caosVar v = world.variables["engine_debug_keys"];
 432         if (v.hasInt() && v.getInt() == 1) {
 433                 if (backend->keyDown(16)) { // shift down
 434                         MetaRoom *n; // for pageup/pagedown
 435
 436                         switch (event.key) {
 437                                 case 45: // insert
 438                                         world.showrooms = !world.showrooms;
 439                                         break;
 440
 441                                 case 19: // pause
 442                                         // TODO: debug pause game
 443                                         break;
 444
 445                                 case 32: // space
 446                                         // TODO: force tick
 447                                         break;
 448
 449                                 case 33: // pageup
 450                                         // TODO: previous metaroom
 451                                         if ((world.map.getMetaRoomCount() - 1) == world.camera.getMetaRoom()->id)
 452                                                 break;
 453                                         n = world.map.getMetaRoom(world.camera.getMetaRoom()->id + 1);
 454                                         if (n)
 455                                                 world.camera.goToMetaRoom(n->id);
 456                                         break;
 457
 458                                 case 34: // pagedown
 459                                         // TODO: next metaroom
 460                                         if (world.camera.getMetaRoom()->id == 0)
 461                                                 break;
 462                                         n = world.map.getMetaRoom(world.camera.getMetaRoom()->id - 1);
 463                                         if (n)
 464                                                 world.camera.goToMetaRoom(n->id);
 465                                         break;
 466
 467                                 default: break; // to shut up warnings
 468                         }
 469                 }
 470         }
 471
 472         // tell the agent with keyboard focus
 473         if (world.focusagent) {
 474                 TextEntryPart *t = (TextEntryPart *)((CompoundAgent *)world.focusagent.get())->part(world.focuspart);
 475                 if (t)
 476                         t->handleSpecialKey(event.key);
 477         }
 478
 479         // notify agents
 480         caosVar k;
 481         k.setInt(event.key);
 482         for (std::list<boost::shared_ptr<Agent> >::iterator i = world.agents.begin(); i != world.agents.end(); i++) {
 483                 if (!*i) continue;
 484                 if ((*i)->imsk_key_down)
 485                         (*i)->queueScript(73, 0, k); // key down script
 486         }
 487 }
 488
 489 static const char data_default[] = "./data";
 490
 491 static void opt_version() {
 492         // We already showed the primary version bit, just throw in some random legalese
 493         std::cout <<
 494                 "This is free software; see the source for copying conditions.  There is NO" << std::endl <<
 495                 "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." << std::endl << std::endl <<
 496                 "...please don't sue us." << std::endl;
 497 }
 498
 499 bool Engine::parseCommandLine(int argc, char *argv[]) {
 500         // variables for command-line flags
 501         int optret;
 502         std::vector<std::string> data_vec;
 503
 504         // generate help for backend options
 505         std::string available_backends;
 506         for (std::map<std::string, boost::shared_ptr<Backend> >::iterator i = possible_backends.begin(); i != possible_backends.end(); i++) {
 507                 if (available_backends.empty()) available_backends = i->first;
 508                 else available_backends += ", " + i->first;
 509         }
 510         available_backends = "Select the backend (options: " + available_backends + "), default is " + preferred_backend;
 511
 512         std::string available_audiobackends;
 513         for (std::map<std::string, boost::shared_ptr<AudioBackend> >::iterator i = possible_audiobackends.begin(); i != possible_audiobackends.end(); i++) {
 514                 if (available_audiobackends.empty()) available_audiobackends = i->first;
 515                 else available_audiobackends += ", " + i->first;
 516         }
 517         available_audiobackends = "Select the audio backend (options: " + available_audiobackends + "), default is " + preferred_audiobackend;
 518
 519         // parse the command-line flags
 520         po::options_description desc;
 521         desc.add_options()
 522                 ("help,h", "Display help on command-line options")
 523                 ("version,V", "Display openc2e version")
 524                 ("silent,s", "Disable all sounds")
 525                 ("backend,k", po::value<std::string>(&preferred_backend)->composing(), available_backends.c_str())
 526                 ("audiobackend,o", po::value<std::string>(&preferred_audiobackend)->composing(), available_audiobackends.c_str())
 527                 ("data-path,d", po::value< std::vector<std::string> >(&data_vec)->composing(),
 528                  "Sets or adds a path to a data directory")
 529                 ("bootstrap,b", po::value< std::vector<std::string> >(&cmdline_bootstrap)->composing(),
 530                  "Sets or adds a path or COS file to bootstrap from")
 531                 ("gametype,g", po::value< std::string >(&world.gametype), "Set the game type (c1, c2, cv or c3)")
 532                 ("gamename,m", po::value< std::string >(&gamename), "Set the game name")
 533                 ("norun,n", "Don't run the game, just execute scripts")
 534                 ("autokill,a", "Enable autokill")
 535                 ("autostop", "Enable autostop (or disable it, for CV)")
 536                 ;
 537         po::variables_map vm;
 538         po::store(po::parse_command_line(argc, argv, desc), vm);
 539         po::notify(vm);
 540
 541         cmdline_enable_sound = !vm.count("silent");
 542         cmdline_norun = vm.count("norun");
 543
 544         if (vm.count("help")) {
 545                 std::cout << desc << std::endl;
 546                 return false;
 547         }
 548
 549         if (vm.count("version")) {
 550                 opt_version();
 551                 return false;
 552         }
 553
 554         if (vm.count("autokill")) {
 555                 world.autokill = true;
 556         }
 557
 558         if (vm.count("autostop")) {
 559                 world.autostop = true;
 560         }
 561
 562         if (vm.count("data-path") == 0) {
 563                 std::cout << "Warning: No data path specified, trying default of '" << data_default << "', see --help if you need to specify one." << std::endl;
 564                 data_vec.push_back(data_default);
 565         }
 566
 567         // add all the data directories to the list
 568         for (std::vector<std::string>::iterator i = data_vec.begin(); i != data_vec.end(); i++) {
 569                 fs::path datadir(*i, fs::native);
 570                 if (!fs::exists(datadir)) {
 571                         throw creaturesException("data path '" + *i + "' doesn't exist");
 572                 }
 573                 world.data_directories.push_back(datadir);
 574         }
 575
 576         // make a vague attempt at blacklisting some characters inside the gamename
 577         // (it's used in directory names, registry keys, etc)
 578         std::string invalidchars = "\\/:*?\"<>|";
 579         for (unsigned int i = 0; i < invalidchars.size(); i++) {
 580                 if (gamename.find(invalidchars[i]) != gamename.npos)
 581                         throw creaturesException(std::string("The character ") + invalidchars[i] + " is not valid in a gamename.");
 582         }
 583
 584         return true;
 585 }
 586
 587 bool Engine::initialSetup() {
 588         assert(world.data_directories.size() > 0);
 589
 590         // autodetect gametype if necessary
 591         if (world.gametype.empty()) {
 592                 std::cout << "Warning: No gametype specified, ";
 593                 // TODO: is this sane? especially unsure about about.exe
 594                 if (!world.findFile("Creatures.exe").empty()) {
 595                         std::cout << "found Creatures.exe, assuming C1 (c1)";
 596                         world.gametype = "c1";
 597                 } else if (!world.findFile("Creatures2.exe").empty()) {
 598                         std::cout << "found Creatures2.exe, assuming C2 (c2)";
 599                         world.gametype = "c2";
 600                 } else if (!world.findFile("Sea-Monkeys.ico").empty()) {
 601                         std::cout << "found Sea-Monkeys.ico, assuming Sea-Monkeys (sm)";
 602                         world.gametype = "sm";
 603                 } else if (!world.findFile("about.exe").empty()) {
 604                         std::cout << "found about.exe, assuming CA, CP or CV (cv)";
 605                         world.gametype = "cv";
 606                 } else {
 607                         std::cout << "assuming C3/DS (c3)";
 608                         world.gametype = "c3";
 609                 }
 610                 std::cout << ", see --help if you need to specify one." << std::endl;
 611         }
 612
 613         // set engine version
 614         // TODO: set gamename
 615         if (world.gametype == "c1") {
 616                 if (gamename.empty()) gamename = "Creatures 1";
 617                 version = 1;
 618         } else if (world.gametype == "c2") {
 619                 if (gamename.empty()) gamename = "Creatures 2";
 620                 version = 2;
 621         } else if (world.gametype == "c3") {
 622                 if (gamename.empty()) gamename = "Creatures 3";
 623                 version = 3;
 624         } else if (world.gametype == "cv") {
 625                 if (gamename.empty()) gamename = "Creatures Village";
 626                 version = 3;
 627                 world.autostop = !world.autostop;
 628         } else if (world.gametype == "sm") {
 629                 if (gamename.empty()) gamename = "Sea-Monkeys";
 630                 version = 3;
 631                 bmprenderer = true;
 632         } else
 633                 throw creaturesException(boost::str(boost::format("unknown gametype '%s'!") % world.gametype));
 634
 635         // finally, add our cache directory to the end
 636         world.data_directories.push_back(storageDirectory());
 637
 638         // initial setup
 639         registerDelegates();
 640         std::cout << "* Reading catalogue files..." << std::endl;
 641         world.initCatalogue();
 642         std::cout << "* Initial setup..." << std::endl;
 643         world.init(); // just reads mouse cursor (we want this after the catalogue reading so we don't play "guess the filename")
 644         if (engine.version > 2) {
 645                 std::cout << "* Reading PRAY files..." << std::endl;
 646                 world.praymanager.update();
 647         }
 648
 649 #ifdef _WIN32
 650         // Here we need to set the working directory since apparently windows != clever
 651         char exepath[MAX_PATH] = "";
 652         GetModuleFileName(0, exepath, sizeof(exepath) - 1);
 653         char *exedir = strrchr(exepath, '\\');
 654         if(exedir) {
 655                 // null terminate the string
 656         *exedir = 0;
 657                 // Set working directory
 658                 SetCurrentDirectory(exepath);
 659         }
 660         else // err, oops
 661                 std::cerr << "Warning: Setting working directory to " << exepath << " failed.";
 662 #endif
 663
 664         if (cmdline_norun) preferred_backend = "null";
 665         if (preferred_backend != "null") std::cout << "* Initialising backend " << preferred_backend << "..." << std::endl;
 666         shared_ptr<Backend> b = possible_backends[preferred_backend];
 667         if (!b) throw creaturesException("No such backend " + preferred_backend);
 668         b->init(); setBackend(b);
 669         possible_backends.clear();
 670
 671         if (cmdline_norun || !cmdline_enable_sound) preferred_audiobackend = "null";
 672         if (preferred_audiobackend != "null") std::cout << "* Initialising audio backend " << preferred_audiobackend << "..." << std::endl;
 673         shared_ptr<AudioBackend> a = possible_audiobackends[preferred_audiobackend];
 674         if (!a) throw creaturesException("No such audio backend " + preferred_audiobackend);
 675         try{
 676                 a->init(); audio = a;
 677         } catch (creaturesException &e) {
 678                 std::cerr << "* Couldn't initialize backend " << preferred_audiobackend << ": " << e.what() << std::endl << "* Continuing without sound." << std::endl;
 679                 audio = shared_ptr<AudioBackend>(new NullAudioBackend());
 680                 audio->init();
 681         }
 682         possible_audiobackends.clear();
 683
 684         world.camera.setBackend(backend); // TODO: hrr
 685
 686         int listenport = backend->networkInit();
 687         if (listenport != -1) {
 688                 // inform the user of the port used, and store it in the relevant file
 689                 std::cout << "Listening for connections on port " << listenport << "." << std::endl;
 690 #ifndef _WIN32
 691                 fs::path p = fs::path(homeDirectory().native_directory_string() + "/.creaturesengine", fs::native);
 692                 if (!fs::exists(p))
 693                         fs::create_directory(p);
 694                 if (fs::is_directory(p)) {
 695                         std::ofstream f((p.native_directory_string() + "/port").c_str(), std::ios::trunc);
 696                         f << boost::str(boost::format("%d") % listenport);
 697                 }
 698 #endif
 699         }
 700
 701         if (world.data_directories.size() < 3) {
 702                 // TODO: This is a hack for DS, basically. Not sure if it works properly. - fuzzie
 703                 caosVar name; name.setString("engine_no_auxiliary_bootstrap_1");
 704                 caosVar contents; contents.setInt(1);
 705                 eame_variables[name] = contents;
 706         }
 707
 708         // execute the initial scripts!
 709         std::cout << "* Executing initial scripts..." << std::endl;
 710         if (cmdline_bootstrap.size() == 0) {
 711                 world.executeBootstrap(false);
 712         } else {
 713                 std::vector<std::string> scripts;
 714
 715                 if (engine.version < 3 && cmdline_bootstrap.size() != 1)
 716                         throw creaturesException("multiple bootstrap files provided in C1/C2 mode");
 717
 718                 for (std::vector< std::string >::iterator bsi = cmdline_bootstrap.begin(); bsi != cmdline_bootstrap.end(); bsi++) {
 719                         fs::path scriptdir(*bsi, fs::native);
 720                         if (engine.version > 2 || fs::extension(scriptdir) == ".cos") {
 721                                 // pass it to the world to execute (it handles both files and directories)
 722
 723                                 if (!fs::exists(scriptdir)) {
 724                                         std::cerr << "Warning: Couldn't find a specified script directory (trying " << *bsi << ")!\n";
 725                                         continue;
 726                                 }
 727
 728                                 world.executeBootstrap(scriptdir);
 729                         } else {
 730                                 // in c1/c2 mode, if not a cos file, assume it's an SFC file
 731                                 if (!fs::exists(scriptdir) || fs::is_directory(scriptdir))
 732                                         throw creaturesException("non-existant bootstrap file provided in C1/C2 mode");
 733                                 // TODO: the default SFCFile loading code is in World, maybe this should be too..
 734                                 SFCFile sfc;
 735                                 std::ifstream f(scriptdir.native_directory_string().c_str(), std::ios::binary);
 736                                 f >> std::noskipws;
 737                                 sfc.read(&f);
 738                                 sfc.copyToWorld();
 739                         }
 740                 }
 741         }
 742
 743         // if there aren't any metarooms, we can't run a useful game, the user probably
 744         // wanted to execute a CAOS script or something went badly wrong.
 745         if (!cmdline_norun && world.map.getMetaRoomCount() == 0) {
 746                 shutdown();
 747                 throw creaturesException("No metarooms found in given bootstrap directories or files");
 748         }
 749
 750         std::cout << "* Done startup." << std::endl;
 751
 752         if (cmdline_norun) {
 753                 // TODO: see comment above about avoiding backend when norun is set
 754                 std::cout << "Told not to run the world, so stopping now." << std::endl;
 755                 shutdown();
 756                 return false;
 757         }
 758
 759         return true;
 760 }
 761
 762 void Engine::shutdown() {
 763         world.shutdown();
 764         backend->shutdown();
 765         audio->shutdown();
 766         freeDelegates(); // does nothing if there are none (ie, no call to initialSetup)
 767 }
 768
 769 fs::path Engine::homeDirectory() {
 770         fs::path p;
 771
 772 #ifndef _WIN32
 773         char *envhome = getenv("HOME");
 774         if (envhome)
 775                 p = fs::path(envhome, fs::native);
 776         if ((!envhome) || (!fs::is_directory(p)))
 777                 p = fs::path(getpwuid(getuid())->pw_dir, fs::native);
 778         if (!fs::is_directory(p)) {
 779                 std::cerr << "Can't work out what your home directory is, giving up and using /tmp for now." << std::endl;
 780                 p = fs::path("/tmp", fs::native); // sigh
 781         }
 782 #else
 783         TCHAR szPath[_MAX_PATH];
 784         SHGetSpecialFolderPath(NULL, szPath, CSIDL_PERSONAL, TRUE);
 785
 786         p = fs::path(szPath, fs::native);
 787         if (!fs::exists(p) || !fs::is_directory(p))
 788                 throw creaturesException("Windows reported that your My Documents folder is at '" + std::string(szPath) + "' but there's no directory there!");
 789 #endif
 790
 791         return p;
 792 }
 793
 794 fs::path Engine::storageDirectory() {
 795 #ifndef _WIN32
 796         std::string dirname = "/.openc2e";
 797 #else
 798         std::string dirname = "/My Games";
 799 #endif
 800
 801         // main storage dir
 802         fs::path p = fs::path(homeDirectory().native_directory_string() + dirname, fs::native);
 803         if (!fs::exists(p))
 804                 fs::create_directory(p);
 805         else if (!fs::is_directory(p))
 806                 throw creaturesException("Your openc2e data directory " + p.native_directory_string() + " is a file, not a directory. That's bad.");
 807
 808         // game-specific storage dir
 809         p = fs::path(p.native_directory_string() + std::string("/" + gamename), fs::native);
 810         if (!fs::exists(p))
 811                 fs::create_directory(p);
 812         else if (!fs::is_directory(p))
 813                 throw creaturesException("Your openc2e game data directory " + p.native_directory_string() + " is a file, not a directory. That's bad.");
 814
 815         return p;
 816 }
 817
 818 /* vim: set noet: */