lib/app/setup.cpp

   1 //  $Id$
   2 //
   3 //  SuperTux -  A Jump'n Run
   4 //  Copyright (C) 2000 Bill Kendrick <bill@newbreedsoftware.com>
   5 //
   6 //  This program is free software; you can redistribute it and/or
   7 //  modify it under the terms of the GNU General Public License
   8 //  as published by the Free Software Foundation; either version 2
   9 //  of the License, or (at your option) any later version.
  10 //
  11 //  This program is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //  GNU General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU General Public License
  17 //  along with this program; if not, write to the Free Software
  18 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19
  20 #include <config.h>
  21
  22 #include <cassert>
  23 #include <cstdio>
  24 #include <iostream>
  25 #include <cstdio>
  26 #include <cstdlib>
  27 #include <cstring>
  28 #include <cerrno>
  29 #include <unistd.h>
  30
  31 #include "SDL.h"
  32 #include "SDL_image.h"
  33 #ifndef NOOPENGL
  34 #include "SDL_opengl.h"
  35 #endif
  36
  37 #include <sys/stat.h>
  38 #include <sys/types.h>
  39 #include <dirent.h>
  40 #ifndef WIN32
  41 #include <libgen.h>
  42 #endif
  43
  44 #include <cctype>
  45
  46 #include "../app/globals.h"
  47 #include "../app/setup.h"
  48 #include "../video/screen.h"
  49 #include "../video/surface.h"
  50 #include "../gui/menu.h"
  51 #include "../utils/configfile.h"
  52 #include "../audio/sound_manager.h"
  53 #include "../app/gettext.h"
  54
  55 using namespace SuperTux;
  56
  57 #ifdef WIN32
  58 #define mkdir(dir, mode)    mkdir(dir)
  59 // on win32 we typically don't want LFS paths
  60 #undef DATA_PREFIX
  61 #define DATA_PREFIX "./data/"
  62 #endif
  63
  64 /* Local function prototypes: */
  65
  66 void seticon(void);
  67 void usage(char * prog, int ret);
  68
  69 /* Does the given file exist and is it accessible? */
  70 int FileSystem::faccessible(const std::string& filename)
  71 {
  72   struct stat filestat;
  73   if (stat(filename.c_str(), &filestat) == -1)
  74     {
  75       return false;
  76     }
  77   else
  78     {
  79       if(S_ISREG(filestat.st_mode))
  80         return true;
  81       else
  82         return false;
  83     }
  84 }
  85
  86 /* Can we write to this location? */
  87 int FileSystem::fwriteable(const std::string& filename)
  88 {
  89   FILE* fi;
  90   fi = fopen(filename.c_str(), "wa");
  91   if (fi == NULL)
  92     {
  93       return false;
  94     }
  95   fclose(fi);
  96   return true;
  97 }
  98
  99 /* Makes sure a directory is created in either the SuperTux home directory or the SuperTux base directory.*/
 100 int FileSystem::fcreatedir(const std::string& relative_dir)
 101 {
 102   std::string path = st_dir + "/" + relative_dir + "/";
 103   if(mkdir(path.c_str(),0755) != 0)
 104     {
 105       path = datadir + "/" + relative_dir + "/";
 106       if(mkdir(path.c_str(),0755) != 0)
 107         {
 108           return false;
 109         }
 110       else
 111         {
 112           return true;
 113         }
 114     }
 115   else
 116     {
 117       return true;
 118     }
 119 }
 120
 121 /* Get all names of sub-directories in a certain directory. */
 122 /* Returns the number of sub-directories found. */
 123 /* Note: The user has to free the allocated space. */
 124 std::set<std::string> FileSystem::dsubdirs(const std::string &rel_path,const  std::string& expected_file)
 125 {
 126   DIR *dirStructP;
 127   struct dirent *direntp;
 128   std::set<std::string> sdirs;
 129   std::string filename;
 130   std::string path = st_dir + "/" + rel_path;
 131
 132   if((dirStructP = opendir(path.c_str())) != NULL)
 133     {
 134       while((direntp = readdir(dirStructP)) != NULL)
 135         {
 136           std::string absolute_filename;
 137           struct stat buf;
 138
 139           absolute_filename = path + "/" + direntp->d_name;
 140
 141           if (stat(absolute_filename.c_str(), &buf) == 0 && S_ISDIR(buf.st_mode))
 142             {
 143               if(!expected_file.empty())
 144                 {
 145                   filename = path + "/" + direntp->d_name + "/" + expected_file;
 146                   if(!faccessible(filename))
 147                     continue;
 148                 }
 149
 150               sdirs.insert(direntp->d_name);
 151             }
 152         }
 153       closedir(dirStructP);
 154     }
 155
 156   path = datadir + "/" + rel_path;
 157   if((dirStructP = opendir(path.c_str())) != NULL)
 158     {
 159       while((direntp = readdir(dirStructP)) != NULL)
 160         {
 161           std::string absolute_filename;
 162           struct stat buf;
 163
 164           absolute_filename = path + "/" + direntp->d_name;
 165
 166           if (stat(absolute_filename.c_str(), &buf) == 0 && S_ISDIR(buf.st_mode))
 167             {
 168               if(!expected_file.empty())
 169                 {
 170                   filename = path + "/" + direntp->d_name + "/" + expected_file;
 171                   if(!faccessible(filename.c_str()))
 172                     {
 173                       continue;
 174                     }
 175                   else
 176                     {
 177                       filename = st_dir + "/" + rel_path + "/" + direntp->d_name + "/" + expected_file;
 178                       if(faccessible(filename.c_str()))
 179                         continue;
 180                     }
 181                 }
 182
 183               sdirs.insert(direntp->d_name);
 184             }
 185         }
 186       closedir(dirStructP);
 187     }
 188
 189   return sdirs;
 190 }
 191
 192 std::set<std::string> FileSystem::dfiles(const std::string& rel_path, const  std::string& glob, const  std::string& exception_str)
 193 {
 194   DIR *dirStructP;
 195   struct dirent *direntp;
 196   std::set<std::string> sdirs;
 197   std::string path = st_dir + "/" + rel_path;
 198
 199   if((dirStructP = opendir(path.c_str())) != NULL)
 200     {
 201       while((direntp = readdir(dirStructP)) != NULL)
 202         {
 203           std::string absolute_filename;
 204           struct stat buf;
 205
 206           absolute_filename = path + "/" + direntp->d_name;
 207
 208           if (stat(absolute_filename.c_str(), &buf) == 0 && S_ISREG(buf.st_mode))
 209             {
 210               if(!exception_str.empty())
 211                 {
 212                   if(strstr(direntp->d_name,exception_str.c_str()) != NULL)
 213                     continue;
 214                 }
 215               if(!glob.empty())
 216                 if(strstr(direntp->d_name,glob.c_str()) == NULL)
 217                   continue;
 218
 219               sdirs.insert(direntp->d_name);
 220             }
 221         }
 222       closedir(dirStructP);
 223     }
 224
 225   path = datadir + "/" + rel_path;
 226   if((dirStructP = opendir(path.c_str())) != NULL)
 227     {
 228       while((direntp = readdir(dirStructP)) != NULL)
 229         {
 230           std::string absolute_filename;
 231           struct stat buf;
 232
 233           absolute_filename = path + "/" + direntp->d_name;
 234
 235           if (stat(absolute_filename.c_str(), &buf) == 0 && S_ISREG(buf.st_mode))
 236             {
 237               if(!exception_str.empty())
 238                 {
 239                   if(strstr(direntp->d_name,exception_str.c_str()) != NULL)
 240                     continue;
 241                 }
 242               if(!glob.empty())
 243                 if(strstr(direntp->d_name,glob.c_str()) == NULL)
 244                   continue;
 245
 246               sdirs.insert(direntp->d_name);
 247             }
 248         }
 249       closedir(dirStructP);
 250     }
 251
 252   return sdirs;
 253 }
 254
 255 void Setup::info(const std::string& _package_name, const std::string& _package_symbol_name, const std::string& _package_version)
 256 {
 257 package_name = _package_name;
 258 package_symbol_name = _package_symbol_name;
 259 package_version = _package_version;
 260 }
 261
 262 /* --- SETUP --- */
 263 /* Set SuperTux configuration and save directories */
 264 void Setup::directories(void)
 265 {
 266   std::string home;
 267   /* Get home directory (from $HOME variable)... if we can't determine it,
 268      use the current directory ("."): */
 269   if (getenv("HOME") != NULL)
 270     home = getenv("HOME");
 271   else
 272     home = ".";
 273
 274   st_dir = home + "/." + package_symbol_name;
 275
 276   /* Remove .supertux config-file from old SuperTux versions */
 277   if(FileSystem::faccessible(st_dir))
 278     {
 279       remove(st_dir.c_str());
 280     }
 281
 282   st_save_dir = st_dir + "/save";
 283
 284   /* Create them. In the case they exist they won't destroy anything. */
 285   mkdir(st_dir.c_str(), 0755);
 286   mkdir(st_save_dir.c_str(), 0755);
 287
 288   mkdir((st_dir + "/levels").c_str(), 0755);
 289
 290   // try current directory as datadir
 291   if(datadir.empty()) {
 292       if(FileSystem::faccessible("./data/intro.txt"))
 293           datadir = "./data";
 294   }
 295
 296   // User has not that a datadir, so we try some magic
 297   if (datadir.empty())
 298     {
 299 #ifndef WIN32
 300       // Detect datadir
 301       char exe_file[PATH_MAX];
 302       if (readlink("/proc/self/exe", exe_file, PATH_MAX) < 0)
 303         {
 304           puts("Couldn't read /proc/self/exe, using default path: " DATA_PREFIX);
 305           datadir = DATA_PREFIX;
 306         }
 307       else
 308         {
 309           std::string exedir = std::string(dirname(exe_file)) + "/";
 310
 311           datadir = exedir + "../data"; // SuperTux run from source dir
 312           if (access(datadir.c_str(), F_OK) != 0)
 313             {
 314               datadir = exedir + "../../data";  //SuperTux run from source dir (with libtool script)
 315
 316               if (access(datadir.c_str(), F_OK) != 0)
 317               {
 318               datadir = exedir + "../share/" + package_symbol_name; // SuperTux run from PATH
 319               if (access(datadir.c_str(), F_OK) != 0)
 320                 { // If all fails, fall back to compiled path
 321                   datadir = DATA_PREFIX;
 322                 }
 323               }
 324             }
 325         }
 326 #else
 327   datadir = DATA_PREFIX;
 328 #endif
 329     }
 330   printf("Datadir: %s\n", datadir.c_str());
 331 }
 332
 333 void Setup::general(void)
 334 {
 335   /* Seed random number generator: */
 336
 337   srand(SDL_GetTicks());
 338
 339   /* Set icon image: */
 340
 341   seticon();
 342
 343   /* Unicode needed for input handling: */
 344
 345   SDL_EnableUNICODE(1);
 346
 347   /* Load GUI/menu images: */
 348   checkbox = new Surface(datadir + "/images/status/checkbox.png", true);
 349   checkbox_checked = new Surface(datadir + "/images/status/checkbox-checked.png", true);
 350   back = new Surface(datadir + "/images/status/back.png", true);
 351   arrow_left = new Surface(datadir + "/images/icons/left.png", true);
 352   arrow_right = new Surface(datadir + "/images/icons/right.png", true);
 353
 354   /* Load the mouse-cursor */
 355   mouse_cursor = new MouseCursor( datadir + "/images/status/mousecursor.png",1);
 356   MouseCursor::set_current(mouse_cursor);
 357
 358 }
 359
 360 void Setup::general_free(void)
 361 {
 362
 363   /* Free GUI/menu images: */
 364   delete checkbox;
 365   delete checkbox_checked;
 366   delete back;
 367   delete arrow_left;
 368   delete arrow_right;
 369
 370   /* Free mouse-cursor */
 371   delete mouse_cursor;
 372
 373 }
 374
 375 void Setup::video(unsigned int screen_w, unsigned int screen_h)
 376 {
 377   /* Init SDL Video: */
 378   if (SDL_Init(SDL_INIT_VIDEO) < 0)
 379     {
 380       fprintf(stderr,
 381               "\nError: I could not initialize video!\n"
 382               "The Simple DirectMedia error that occured was:\n"
 383               "%s\n\n", SDL_GetError());
 384       exit(1);
 385     }
 386
 387   /* Open display: */
 388   if(use_gl)
 389     video_gl(screen_w, screen_h);
 390   else
 391     video_sdl(screen_w, screen_h);
 392
 393   Surface::reload_all();
 394
 395   /* Set window manager stuff: */
 396   SDL_WM_SetCaption((package_name + " " + package_version).c_str(), package_name.c_str());
 397 }
 398
 399 void Setup::video_sdl(unsigned int screen_w, unsigned int screen_h)
 400 {
 401   if (use_fullscreen)
 402     {
 403       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_FULLSCREEN ) ; /* | SDL_HWSURFACE); */
 404       if (screen == NULL)
 405         {
 406           fprintf(stderr,
 407                   "\nWarning: I could not set up fullscreen video for "
 408                   "800x600 mode.\n"
 409                   "The Simple DirectMedia error that occured was:\n"
 410                   "%s\n\n", SDL_GetError());
 411           use_fullscreen = false;
 412         }
 413     }
 414   else
 415     {
 416       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_HWSURFACE | SDL_DOUBLEBUF );
 417
 418       if (screen == NULL)
 419         {
 420           fprintf(stderr,
 421                   "\nError: I could not set up video for 800x600 mode.\n"
 422                   "The Simple DirectMedia error that occured was:\n"
 423                   "%s\n\n", SDL_GetError());
 424           exit(1);
 425         }
 426     }
 427 }
 428
 429 void Setup::video_gl(unsigned int screen_w, unsigned int screen_h)
 430 {
 431 #ifndef NOOPENGL
 432
 433   SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
 434   SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
 435   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
 436   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 437   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 438
 439   if (use_fullscreen)
 440     {
 441       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_FULLSCREEN | SDL_OPENGL) ; /* | SDL_HWSURFACE); */
 442       if (screen == NULL)
 443         {
 444           fprintf(stderr,
 445                   "\nWarning: I could not set up fullscreen video for "
 446                   "640x480 mode.\n"
 447                   "The Simple DirectMedia error that occured was:\n"
 448                   "%s\n\n", SDL_GetError());
 449           use_fullscreen = false;
 450         }
 451     }
 452   else
 453     {
 454       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_OPENGL);
 455
 456       if (screen == NULL)
 457         {
 458           fprintf(stderr,
 459                   "\nError: I could not set up video for 640x480 mode.\n"
 460                   "The Simple DirectMedia error that occured was:\n"
 461                   "%s\n\n", SDL_GetError());
 462           exit(1);
 463         }
 464     }
 465
 466   /*
 467    * Set up OpenGL for 2D rendering.
 468    */
 469   glDisable(GL_DEPTH_TEST);
 470   glDisable(GL_CULL_FACE);
 471
 472   glViewport(0, 0, screen->w, screen->h);
 473   glMatrixMode(GL_PROJECTION);
 474   glLoadIdentity();
 475   glOrtho(0, screen->w, screen->h, 0, -1.0, 1.0);
 476
 477   glMatrixMode(GL_MODELVIEW);
 478   glLoadIdentity();
 479   glTranslatef(0.0f, 0.0f, 0.0f);
 480
 481 #endif
 482
 483 }
 484
 485 void Setup::joystick(void)
 486 {
 487
 488   /* Init Joystick: */
 489
 490   use_joystick = true;
 491
 492   if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
 493     {
 494       fprintf(stderr, "Warning: I could not initialize joystick!\n"
 495               "The Simple DirectMedia error that occured was:\n"
 496               "%s\n\n", SDL_GetError());
 497
 498       use_joystick = false;
 499     }
 500   else
 501     {
 502       /* Open joystick: */
 503       if (SDL_NumJoysticks() <= 0)
 504         {
 505           fprintf(stderr, "Info: No joysticks were found.\n");
 506
 507           use_joystick = false;
 508         }
 509       else
 510         {
 511           js = SDL_JoystickOpen(joystick_num);
 512
 513           if (js == NULL)
 514             {
 515               fprintf(stderr, "Warning: Could not open joystick %d.\n"
 516                       "The Simple DirectMedia error that occured was:\n"
 517                       "%s\n\n", joystick_num, SDL_GetError());
 518
 519               use_joystick = false;
 520             }
 521           else
 522             {
 523               if (SDL_JoystickNumAxes(js) < 2)
 524                 {
 525                   fprintf(stderr,
 526                           "Warning: Joystick does not have enough axes!\n");
 527
 528                   use_joystick = false;
 529                 }
 530               else
 531                 {
 532                   if (SDL_JoystickNumButtons(js) < 2)
 533                     {
 534                       fprintf(stderr,
 535                               "Warning: "
 536                               "Joystick does not have enough buttons!\n");
 537
 538                       use_joystick = false;
 539                     }
 540                 }
 541             }
 542         }
 543     }
 544 }
 545
 546 void Setup::audio(void)
 547 {
 548
 549   /* Init SDL Audio silently even if --disable-sound : */
 550
 551   if (SoundManager::get()->audio_device_available())
 552     {
 553       if (SDL_Init(SDL_INIT_AUDIO) < 0)
 554         {
 555           /* only print out message if sound or music
 556              was not disabled at command-line
 557            */
 558           if (SoundManager::get()->sound_enabled() || SoundManager::get()->music_enabled())
 559             {
 560               fprintf(stderr,
 561                       "\nWarning: I could not initialize audio!\n"
 562                       "The Simple DirectMedia error that occured was:\n"
 563                       "%s\n\n", SDL_GetError());
 564             }
 565           /* keep the programming logic the same :-)
 566              because in this case, use_sound & use_music' values are ignored
 567              when there's no available audio device
 568           */
 569           SoundManager::get()->enable_sound(false);
 570           SoundManager::get()->enable_music(false);
 571           SoundManager::get()->set_audio_device_available(false);
 572         }
 573     }
 574
 575
 576   /* Open sound silently regarless the value of "use_sound": */
 577
 578   if (SoundManager::get()->audio_device_available())
 579     {
 580       if (SoundManager::get()->open_audio(44100, AUDIO_S16, 2, 2048) < 0)
 581         {
 582           /* only print out message if sound or music
 583              was not disabled at command-line
 584            */
 585           if (SoundManager::get()->sound_enabled() || SoundManager::get()->music_enabled())
 586             {
 587               fprintf(stderr,
 588                       "\nWarning: I could not set up audio for 44100 Hz "
 589                       "16-bit stereo.\n"
 590                       "The Simple DirectMedia error that occured was:\n"
 591                       "%s\n\n", SDL_GetError());
 592             }
 593           SoundManager::get()->enable_sound(false);
 594           SoundManager::get()->enable_music(false);
 595           SoundManager::get()->set_audio_device_available(false);
 596         }
 597     }
 598
 599 }
 600
 601
 602 /* --- SHUTDOWN --- */
 603
 604 void Termination::shutdown(void)
 605 {
 606   config->save();
 607   SoundManager::get()->close_audio();
 608   SDL_Quit();
 609 }
 610
 611 /* --- ABORT! --- */
 612
 613 void Termination::abort(const std::string& reason, const std::string& details)
 614 {
 615   fprintf(stderr, "\nError: %s\n%s\n\n", reason.c_str(), details.c_str());
 616   shutdown();
 617   ::abort();
 618 }
 619
 620 /* Set Icon (private) */
 621
 622 void seticon(void)
 623 {
 624 //  int masklen;
 625 //  Uint8 * mask;
 626   SDL_Surface * icon;
 627
 628
 629   /* Load icon into a surface: */
 630
 631   icon = IMG_Load((datadir + "/images/" + package_symbol_name + ".xpm").c_str());
 632   if (icon == NULL)
 633     {
 634       fprintf(stderr,
 635               "\nError: I could not load the icon image: %s%s\n"
 636               "The Simple DirectMedia error that occured was:\n"
 637               "%s\n\n", datadir.c_str(), ("/images/" + package_symbol_name + ".xpm").c_str(), SDL_GetError());
 638       exit(1);
 639     }
 640
 641
 642   /* Create mask: */
 643 /*
 644   masklen = (((icon -> w) + 7) / 8) * (icon -> h);
 645   mask = (Uint8*) malloc(masklen * sizeof(Uint8));
 646   memset(mask, 0xFF, masklen);
 647 */
 648
 649   /* Set icon: */
 650
 651   SDL_WM_SetIcon(icon, NULL);//mask);
 652
 653
 654   /* Free icon surface & mask: */
 655
 656 //  free(mask);
 657   SDL_FreeSurface(icon);
 658 }
 659
 660
 661 /* Parse command-line arguments: */
 662
 663 void Setup::parseargs(int argc, char * argv[])
 664 {
 665   int i;
 666
 667   config->load();
 668
 669   /* Parse arguments: */
 670
 671   for (i = 1; i < argc; i++)
 672     {
 673       if (strcmp(argv[i], "--fullscreen") == 0 ||
 674           strcmp(argv[i], "-f") == 0)
 675         {
 676           use_fullscreen = true;
 677         }
 678       else if (strcmp(argv[i], "--window") == 0 ||
 679                strcmp(argv[i], "-w") == 0)
 680         {
 681           use_fullscreen = false;
 682         }
 683       else if (strcmp(argv[i], "--joystick") == 0 || strcmp(argv[i], "-j") == 0)
 684         {
 685           assert(i+1 < argc);
 686           joystick_num = atoi(argv[++i]);
 687         }
 688       else if (strcmp(argv[i], "--joymap") == 0)
 689         {
 690           assert(i+1 < argc);
 691           if (sscanf(argv[++i],
 692                      "%d:%d:%d:%d:%d",
 693                      &joystick_keymap.x_axis,
 694                      &joystick_keymap.y_axis,
 695                      &joystick_keymap.a_button,
 696                      &joystick_keymap.b_button,
 697                      &joystick_keymap.start_button) != 5)
 698             {
 699               puts("Warning: Invalid or incomplete joymap, should be: 'XAXIS:YAXIS:A:B:START'");
 700             }
 701           else
 702             {
 703               std::cout << "Using new joymap:\n"
 704                         << "  X-Axis:       " << joystick_keymap.x_axis << "\n"
 705                         << "  Y-Axis:       " << joystick_keymap.y_axis << "\n"
 706                         << "  A-Button:     " << joystick_keymap.a_button << "\n"
 707                         << "  B-Button:     " << joystick_keymap.b_button << "\n"
 708                         << "  Start-Button: " << joystick_keymap.start_button << std::endl;
 709             }
 710         }
 711       else if (strcmp(argv[i], "--leveleditor") == 0)
 712         {
 713           launch_leveleditor_mode = true;
 714         }
 715       else if (strcmp(argv[i], "--worldmap") == 0)
 716         {
 717           launch_worldmap_mode = true;
 718         }
 719       else if (strcmp(argv[i], "--flip-levels") == 0)
 720         {
 721           flip_levels_mode = true;
 722         }
 723       else if (strcmp(argv[i], "--datadir") == 0
 724                || strcmp(argv[i], "-d") == 0 )
 725         {
 726           assert(i+1 < argc);
 727           datadir = argv[++i];
 728         }
 729       else if (strcmp(argv[i], "--show-fps") == 0)
 730         {
 731           /* Use full screen: */
 732
 733           show_fps = true;
 734         }
 735       else if (strcmp(argv[i], "--opengl") == 0 ||
 736                strcmp(argv[i], "-gl") == 0)
 737         {
 738 #ifndef NOOPENGL
 739           /* Use OpengGL: */
 740
 741           use_gl = true;
 742 #endif
 743         }
 744       else if (strcmp(argv[i], "--sdl") == 0)
 745           {
 746             use_gl = false;
 747           }
 748       else if (strcmp(argv[i], "--usage") == 0)
 749         {
 750           /* Show usage: */
 751
 752           usage(argv[0], 0);
 753         }
 754       else if (strcmp(argv[i], "--version") == 0)
 755         {
 756           /* Show version: */
 757           printf((package_name + " " + package_version + "\n").c_str() );
 758           exit(0);
 759         }
 760       else if (strcmp(argv[i], "--disable-sound") == 0)
 761         {
 762           /* Disable the compiled in sound feature */
 763           printf("Sounds disabled \n");
 764           SoundManager::get()->enable_sound(false);
 765         }
 766       else if (strcmp(argv[i], "--disable-music") == 0)
 767         {
 768           /* Disable the compiled in sound feature */
 769           printf("Music disabled \n");
 770           SoundManager::get()->enable_music(false);
 771         }
 772       else if (strcmp(argv[i], "--debug") == 0)
 773         {
 774           /* Enable the debug-mode */
 775           debug_mode = true;
 776
 777         }
 778       else if (strcmp(argv[i], "--help") == 0)
 779         {     /* Show help: */
 780           puts(_(("  SuperTux  " + package_version + "\n"
 781                "  Please see the file \"README.txt\" for more details.\n").c_str()));
 782           printf(_("Usage: %s [OPTIONS] FILENAME\n\n"), argv[0]);
 783           puts(_("Display Options:\n"
 784                "  -f, --fullscreen    Run in fullscreen mode.\n"
 785                "  -w, --window        Run in window mode.\n"
 786                "  --opengl            If OpenGL support was compiled in, this will tell\n"
 787                "                      SuperTux to make use of it.\n"
 788                "  --sdl               Use the SDL software graphical renderer\n"
 789                "\n"
 790                "Sound Options:\n"
 791                "  --disable-sound     If sound support was compiled in,  this will\n"
 792                "                      disable sound for this session of the game.\n"
 793                "  --disable-music     Like above, but this will disable music.\n"
 794                "\n"
 795                "Misc Options:\n"
 796                "  -j, --joystick NUM  Use joystick NUM (default: 0)\n"
 797                "  --joymap XAXIS:YAXIS:A:B:START\n"
 798                "                      Define how joystick buttons and axis should be mapped\n"
 799                "  --leveleditor       Opens the leveleditor in a file.\n"
 800                "  --worldmap          Opens the specified worldmap file.\n"
 801                "  --flip-levels       Flip levels upside-down.\n"
 802                "  -d, --datadir DIR   Load Game data from DIR (default: automatic)\n"
 803                "  --debug             Enables the debug mode, which is useful for developers.\n"
 804                "  --help              Display a help message summarizing command-line\n"
 805                "                      options, license and game controls.\n"
 806                "  --usage             Display a brief message summarizing command-line options.\n"
 807                "  --version           Display the version of SuperTux you're running.\n\n"
 808                ));
 809           exit(0);
 810         }
 811       else if (argv[i][0] != '-')
 812         {
 813           level_startup_file = argv[i];
 814         }
 815       else
 816         {
 817           /* Unknown - complain! */
 818
 819           usage(argv[0], 1);
 820         }
 821     }
 822 }
 823
 824
 825 /* Display usage: */
 826
 827 void usage(char * prog, int ret)
 828 {
 829   FILE * fi;
 830
 831
 832   /* Determine which stream to write to: */
 833
 834   if (ret == 0)
 835     fi = stdout;
 836   else
 837     fi = stderr;
 838
 839
 840   /* Display the usage message: */
 841
 842   fprintf(fi, _("Usage: %s [--fullscreen] [--opengl] [--disable-sound] [--disable-music] [--debug] | [--usage | --help | --version] [--leveleditor] [--worldmap] [--flip-levels] FILENAME\n"),
 843           prog);
 844
 845
 846   /* Quit! */
 847
 848   exit(ret);
 849 }
 850
 851 std::set<std::string> FileSystem::read_directory(const std::string& pathname)
 852 {
 853   std::set<std::string> dirnames;
 854
 855   DIR* dir = opendir(pathname.c_str());
 856   if (dir)
 857     {
 858       struct dirent *direntp;
 859
 860       while((direntp = readdir(dir)))
 861         {
 862           dirnames.insert(direntp->d_name);
 863         }
 864
 865       closedir(dir);
 866     }
 867
 868   return dirnames;
 869 }
 870
 871 /* EOF */