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 <cassert>
  21 #include <cstdio>
  22 #include <iostream>
  23 #include <cstdio>
  24 #include <cstdlib>
  25 #include <cstring>
  26 #include <cerrno>
  27 #include <unistd.h>
  28
  29 #include "SDL.h"
  30 #include "SDL_image.h"
  31 #ifndef NOOPENGL
  32 #include "SDL_opengl.h"
  33 #endif
  34
  35 #include <sys/stat.h>
  36 #include <sys/types.h>
  37 #include <dirent.h>
  38 #ifndef WIN32
  39 #include <libgen.h>
  40 #endif
  41
  42 #include <cctype>
  43
  44 #include "../app/globals.h"
  45 #include "../app/setup.h"
  46 #include "../video/screen.h"
  47 #include "../video/surface.h"
  48 #include "../gui/menu.h"
  49 #include "../utils/configfile.h"
  50 #include "../audio/sound_manager.h"
  51 #include "../app/gettext.h"
  52
  53 using namespace SuperTux;
  54
  55 #ifdef WIN32
  56 #define mkdir(dir, mode)    mkdir(dir)
  57 // on win32 we typically don't want LFS paths
  58 #undef DATA_PREFIX
  59 #define DATA_PREFIX "./data/"
  60 #endif
  61
  62 /* Local function prototypes: */
  63
  64 void seticon(void);
  65 void usage(char * prog, int ret);
  66
  67 /* Does the given file exist and is it accessible? */
  68 int FileSystem::faccessible(const char *filename)
  69 {
  70   struct stat filestat;
  71   if (stat(filename, &filestat) == -1)
  72     {
  73       return false;
  74     }
  75   else
  76     {
  77       if(S_ISREG(filestat.st_mode))
  78         return true;
  79       else
  80         return false;
  81     }
  82 }
  83
  84 /* Can we write to this location? */
  85 int FileSystem::fwriteable(const char *filename)
  86 {
  87   FILE* fi;
  88   fi = fopen(filename, "wa");
  89   if (fi == NULL)
  90     {
  91       return false;
  92     }
  93   return true;
  94 }
  95
  96 /* Makes sure a directory is created in either the SuperTux home directory or the SuperTux base directory.*/
  97 int FileSystem::fcreatedir(const char* relative_dir)
  98 {
  99   char path[1024];
 100   snprintf(path, 1024, "%s/%s/", st_dir, relative_dir);
 101   if(mkdir(path,0755) != 0)
 102     {
 103       snprintf(path, 1024, "%s/%s/", datadir.c_str(), relative_dir);
 104       if(mkdir(path,0755) != 0)
 105         {
 106           return false;
 107         }
 108       else
 109         {
 110           return true;
 111         }
 112     }
 113   else
 114     {
 115       return true;
 116     }
 117 }
 118
 119 /* Get all names of sub-directories in a certain directory. */
 120 /* Returns the number of sub-directories found. */
 121 /* Note: The user has to free the allocated space. */
 122 std::set<std::string> FileSystem::dsubdirs(const char *rel_path,const  char* expected_file)
 123 {
 124   DIR *dirStructP;
 125   struct dirent *direntp;
 126   std::set<std::string> sdirs;
 127   char filename[1024];
 128   char path[1024];
 129
 130   sprintf(path,"%s/%s",st_dir,rel_path);
 131   if((dirStructP = opendir(path)) != NULL)
 132     {
 133       while((direntp = readdir(dirStructP)) != NULL)
 134         {
 135           char absolute_filename[1024];
 136           struct stat buf;
 137
 138           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 139
 140           if (stat(absolute_filename, &buf) == 0 && S_ISDIR(buf.st_mode))
 141             {
 142               if(expected_file != NULL)
 143                 {
 144                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 145                   if(!faccessible(filename))
 146                     continue;
 147                 }
 148
 149               sdirs.insert(direntp->d_name);
 150             }
 151         }
 152       closedir(dirStructP);
 153     }
 154
 155   sprintf(path,"%s/%s",datadir.c_str(),rel_path);
 156   if((dirStructP = opendir(path)) != NULL)
 157     {
 158       while((direntp = readdir(dirStructP)) != NULL)
 159         {
 160           char absolute_filename[1024];
 161           struct stat buf;
 162
 163           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 164
 165           if (stat(absolute_filename, &buf) == 0 && S_ISDIR(buf.st_mode))
 166             {
 167               if(expected_file != NULL)
 168                 {
 169                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 170                   if(!faccessible(filename))
 171                     {
 172                       continue;
 173                     }
 174                   else
 175                     {
 176                       sprintf(filename,"%s/%s/%s/%s",st_dir,rel_path,direntp->d_name,expected_file);
 177                       if(faccessible(filename))
 178                         continue;
 179                     }
 180                 }
 181
 182               sdirs.insert(direntp->d_name);
 183             }
 184         }
 185       closedir(dirStructP);
 186     }
 187
 188   return sdirs;
 189 }
 190
 191 std::set<std::string> FileSystem::dfiles(const char *rel_path, const  char* glob, const  char* exception_str)
 192 {
 193   DIR *dirStructP;
 194   struct dirent *direntp;
 195   std::set<std::string> sdirs;
 196   char path[1024];
 197
 198   sprintf(path,"%s/%s",st_dir,rel_path);
 199   if((dirStructP = opendir(path)) != NULL)
 200     {
 201       while((direntp = readdir(dirStructP)) != NULL)
 202         {
 203           char absolute_filename[1024];
 204           struct stat buf;
 205
 206           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 207
 208           if (stat(absolute_filename, &buf) == 0 && S_ISREG(buf.st_mode))
 209             {
 210               if(exception_str != NULL)
 211                 {
 212                   if(strstr(direntp->d_name,exception_str) != NULL)
 213                     continue;
 214                 }
 215               if(glob != NULL)
 216                 if(strstr(direntp->d_name,glob) == NULL)
 217                   continue;
 218
 219               sdirs.insert(direntp->d_name);
 220             }
 221         }
 222       closedir(dirStructP);
 223     }
 224
 225   sprintf(path,"%s/%s",datadir.c_str(),rel_path);
 226   if((dirStructP = opendir(path)) != NULL)
 227     {
 228       while((direntp = readdir(dirStructP)) != NULL)
 229         {
 230           char absolute_filename[1024];
 231           struct stat buf;
 232
 233           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 234
 235           if (stat(absolute_filename, &buf) == 0 && S_ISREG(buf.st_mode))
 236             {
 237               if(exception_str != NULL)
 238                 {
 239                   if(strstr(direntp->d_name,exception_str) != NULL)
 240                     continue;
 241                 }
 242               if(glob != NULL)
 243                 if(strstr(direntp->d_name,glob) == 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   char *home;
 267   char str[1024];
 268   /* Get home directory (from $HOME variable)... if we can't determine it,
 269      use the current directory ("."): */
 270   if (getenv("HOME") != NULL)
 271     home = getenv("HOME");
 272   else
 273     home = ".";
 274
 275   std::string st_dir_tmp = "/." + package_symbol_name;
 276   st_dir = (char *) malloc(sizeof(char) * (strlen(home) +
 277                                            strlen(st_dir_tmp.c_str()) + 1));
 278   strcpy(st_dir, home);
 279   strcat(st_dir,st_dir_tmp.c_str());
 280
 281   /* Remove .supertux config-file from old SuperTux versions */
 282   if(FileSystem::faccessible(st_dir))
 283     {
 284       remove
 285         (st_dir);
 286     }
 287
 288   st_save_dir = (char *) malloc(sizeof(char) * (strlen(st_dir) + strlen("/save") + 1));
 289
 290   strcpy(st_save_dir,st_dir);
 291   strcat(st_save_dir,"/save");
 292
 293   /* Create them. In the case they exist they won't destroy anything. */
 294   mkdir(st_dir, 0755);
 295   mkdir(st_save_dir, 0755);
 296
 297   sprintf(str, "%s/levels", st_dir);
 298   mkdir(str, 0755);
 299
 300   // User has not that a datadir, so we try some magic
 301   if (datadir.empty())
 302     {
 303 #ifndef WIN32
 304       // Detect datadir
 305       char exe_file[PATH_MAX];
 306       if (readlink("/proc/self/exe", exe_file, PATH_MAX) < 0)
 307         {
 308           puts("Couldn't read /proc/self/exe, using default path: " DATA_PREFIX);
 309           datadir = DATA_PREFIX;
 310         }
 311       else
 312         {
 313           std::string exedir = std::string(dirname(exe_file)) + "/";
 314
 315           datadir = exedir + "../data"; // SuperTux run from source dir
 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 #else
 326   datadir = DATA_PREFIX;
 327 #endif
 328     }
 329   printf("Datadir: %s\n", datadir.c_str());
 330 }
 331
 332 void Setup::general(void)
 333 {
 334   /* Seed random number generator: */
 335
 336   srand(SDL_GetTicks());
 337
 338   /* Set icon image: */
 339
 340   seticon();
 341
 342   /* Unicode needed for input handling: */
 343
 344   SDL_EnableUNICODE(1);
 345
 346   /* Load GUI/menu images: */
 347   checkbox = new Surface(datadir + "/images/status/checkbox.png", true);
 348   checkbox_checked = new Surface(datadir + "/images/status/checkbox-checked.png", true);
 349   back = new Surface(datadir + "/images/status/back.png", true);
 350   arrow_left = new Surface(datadir + "/images/icons/left.png", true);
 351   arrow_right = new Surface(datadir + "/images/icons/right.png", true);
 352
 353   /* Load the mouse-cursor */
 354   mouse_cursor = new MouseCursor( datadir + "/images/status/mousecursor.png",1);
 355   MouseCursor::set_current(mouse_cursor);
 356
 357 }
 358
 359 void Setup::general_free(void)
 360 {
 361
 362   /* Free GUI/menu images: */
 363   delete checkbox;
 364   delete checkbox_checked;
 365   delete back;
 366   delete arrow_left;
 367   delete arrow_right;
 368
 369   /* Free mouse-cursor */
 370   delete mouse_cursor;
 371
 372 }
 373
 374 void Setup::video(unsigned int screen_w, unsigned int screen_h)
 375 {
 376   /* Init SDL Video: */
 377   if (SDL_Init(SDL_INIT_VIDEO) < 0)
 378     {
 379       fprintf(stderr,
 380               "\nError: I could not initialize video!\n"
 381               "The Simple DirectMedia error that occured was:\n"
 382               "%s\n\n", SDL_GetError());
 383       exit(1);
 384     }
 385
 386   /* Open display: */
 387   if(use_gl)
 388     video_gl(screen_w, screen_h);
 389   else
 390     video_sdl(screen_w, screen_h);
 391
 392   Surface::reload_all();
 393
 394   /* Set window manager stuff: */
 395   SDL_WM_SetCaption((package_name + " " + package_version).c_str(), package_name.c_str());
 396 }
 397
 398 void Setup::video_sdl(unsigned int screen_w, unsigned int screen_h)
 399 {
 400   if (use_fullscreen)
 401     {
 402       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_FULLSCREEN ) ; /* | SDL_HWSURFACE); */
 403       if (screen == NULL)
 404         {
 405           fprintf(stderr,
 406                   "\nWarning: I could not set up fullscreen video for "
 407                   "800x600 mode.\n"
 408                   "The Simple DirectMedia error that occured was:\n"
 409                   "%s\n\n", SDL_GetError());
 410           use_fullscreen = false;
 411         }
 412     }
 413   else
 414     {
 415       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_HWSURFACE | SDL_DOUBLEBUF );
 416
 417       if (screen == NULL)
 418         {
 419           fprintf(stderr,
 420                   "\nError: I could not set up video for 800x600 mode.\n"
 421                   "The Simple DirectMedia error that occured was:\n"
 422                   "%s\n\n", SDL_GetError());
 423           exit(1);
 424         }
 425     }
 426 }
 427
 428 void Setup::video_gl(unsigned int screen_w, unsigned int screen_h)
 429 {
 430 #ifndef NOOPENGL
 431
 432   SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
 433   SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
 434   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
 435   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 436   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 437
 438   if (use_fullscreen)
 439     {
 440       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_FULLSCREEN | SDL_OPENGL) ; /* | SDL_HWSURFACE); */
 441       if (screen == NULL)
 442         {
 443           fprintf(stderr,
 444                   "\nWarning: I could not set up fullscreen video for "
 445                   "640x480 mode.\n"
 446                   "The Simple DirectMedia error that occured was:\n"
 447                   "%s\n\n", SDL_GetError());
 448           use_fullscreen = false;
 449         }
 450     }
 451   else
 452     {
 453       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_OPENGL);
 454
 455       if (screen == NULL)
 456         {
 457           fprintf(stderr,
 458                   "\nError: I could not set up video for 640x480 mode.\n"
 459                   "The Simple DirectMedia error that occured was:\n"
 460                   "%s\n\n", SDL_GetError());
 461           exit(1);
 462         }
 463     }
 464
 465   /*
 466    * Set up OpenGL for 2D rendering.
 467    */
 468   glDisable(GL_DEPTH_TEST);
 469   glDisable(GL_CULL_FACE);
 470
 471   glViewport(0, 0, screen->w, screen->h);
 472   glMatrixMode(GL_PROJECTION);
 473   glLoadIdentity();
 474   glOrtho(0, screen->w, screen->h, 0, -1.0, 1.0);
 475
 476   glMatrixMode(GL_MODELVIEW);
 477   glLoadIdentity();
 478   glTranslatef(0.0f, 0.0f, 0.0f);
 479
 480 #endif
 481
 482 }
 483
 484 void Setup::joystick(void)
 485 {
 486
 487   /* Init Joystick: */
 488
 489   use_joystick = true;
 490
 491   if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
 492     {
 493       fprintf(stderr, "Warning: I could not initialize joystick!\n"
 494               "The Simple DirectMedia error that occured was:\n"
 495               "%s\n\n", SDL_GetError());
 496
 497       use_joystick = false;
 498     }
 499   else
 500     {
 501       /* Open joystick: */
 502       if (SDL_NumJoysticks() <= 0)
 503         {
 504           fprintf(stderr, "Info: No joysticks were found.\n");
 505
 506           use_joystick = false;
 507         }
 508       else
 509         {
 510           js = SDL_JoystickOpen(joystick_num);
 511
 512           if (js == NULL)
 513             {
 514               fprintf(stderr, "Warning: Could not open joystick %d.\n"
 515                       "The Simple DirectMedia error that occured was:\n"
 516                       "%s\n\n", joystick_num, SDL_GetError());
 517
 518               use_joystick = false;
 519             }
 520           else
 521             {
 522               if (SDL_JoystickNumAxes(js) < 2)
 523                 {
 524                   fprintf(stderr,
 525                           "Warning: Joystick does not have enough axes!\n");
 526
 527                   use_joystick = false;
 528                 }
 529               else
 530                 {
 531                   if (SDL_JoystickNumButtons(js) < 2)
 532                     {
 533                       fprintf(stderr,
 534                               "Warning: "
 535                               "Joystick does not have enough buttons!\n");
 536
 537                       use_joystick = false;
 538                     }
 539                 }
 540             }
 541         }
 542     }
 543 }
 544
 545 void Setup::audio(void)
 546 {
 547
 548   /* Init SDL Audio silently even if --disable-sound : */
 549
 550   if (SoundManager::get()->audio_device_available())
 551     {
 552       if (SDL_Init(SDL_INIT_AUDIO) < 0)
 553         {
 554           /* only print out message if sound or music
 555              was not disabled at command-line
 556            */
 557           if (SoundManager::get()->sound_enabled() || SoundManager::get()->music_enabled())
 558             {
 559               fprintf(stderr,
 560                       "\nWarning: I could not initialize audio!\n"
 561                       "The Simple DirectMedia error that occured was:\n"
 562                       "%s\n\n", SDL_GetError());
 563             }
 564           /* keep the programming logic the same :-)
 565              because in this case, use_sound & use_music' values are ignored
 566              when there's no available audio device
 567           */
 568           SoundManager::get()->enable_sound(false);
 569           SoundManager::get()->enable_music(false);
 570           SoundManager::get()->set_audio_device_available(false);
 571         }
 572     }
 573
 574
 575   /* Open sound silently regarless the value of "use_sound": */
 576
 577   if (SoundManager::get()->audio_device_available())
 578     {
 579       if (SoundManager::get()->open_audio(44100, AUDIO_S16, 2, 2048) < 0)
 580         {
 581           /* only print out message if sound or music
 582              was not disabled at command-line
 583            */
 584           if (SoundManager::get()->sound_enabled() || SoundManager::get()->music_enabled())
 585             {
 586               fprintf(stderr,
 587                       "\nWarning: I could not set up audio for 44100 Hz "
 588                       "16-bit stereo.\n"
 589                       "The Simple DirectMedia error that occured was:\n"
 590                       "%s\n\n", SDL_GetError());
 591             }
 592           SoundManager::get()->enable_sound(false);
 593           SoundManager::get()->enable_music(false);
 594           SoundManager::get()->set_audio_device_available(false);
 595         }
 596     }
 597
 598 }
 599
 600
 601 /* --- SHUTDOWN --- */
 602
 603 void Termination::shutdown(void)
 604 {
 605   config->save();
 606   SoundManager::get()->close_audio();
 607   SDL_Quit();
 608 }
 609
 610 /* --- ABORT! --- */
 611
 612 void Termination::abort(const std::string& reason, const std::string& details)
 613 {
 614   fprintf(stderr, "\nError: %s\n%s\n\n", reason.c_str(), details.c_str());
 615   shutdown();
 616   ::abort();
 617 }
 618
 619 /* Set Icon (private) */
 620
 621 void seticon(void)
 622 {
 623 //  int masklen;
 624 //  Uint8 * mask;
 625   SDL_Surface * icon;
 626
 627
 628   /* Load icon into a surface: */
 629
 630   icon = IMG_Load((datadir + "/images/" + package_symbol_name + ".xpm").c_str());
 631   if (icon == NULL)
 632     {
 633       fprintf(stderr,
 634               "\nError: I could not load the icon image: %s%s\n"
 635               "The Simple DirectMedia error that occured was:\n"
 636               "%s\n\n", datadir.c_str(), ("/images/" + package_symbol_name + ".xpm").c_str(), SDL_GetError());
 637       exit(1);
 638     }
 639
 640
 641   /* Create mask: */
 642 /*
 643   masklen = (((icon -> w) + 7) / 8) * (icon -> h);
 644   mask = (Uint8*) malloc(masklen * sizeof(Uint8));
 645   memset(mask, 0xFF, masklen);
 646 */
 647
 648   /* Set icon: */
 649
 650   SDL_WM_SetIcon(icon, NULL);//mask);
 651
 652
 653   /* Free icon surface & mask: */
 654
 655 //  free(mask);
 656   SDL_FreeSurface(icon);
 657 }
 658
 659
 660 /* Parse command-line arguments: */
 661
 662 void Setup::parseargs(int argc, char * argv[])
 663 {
 664   int i;
 665
 666   config->load();
 667
 668   /* Parse arguments: */
 669
 670   for (i = 1; i < argc; i++)
 671     {
 672       if (strcmp(argv[i], "--fullscreen") == 0 ||
 673           strcmp(argv[i], "-f") == 0)
 674         {
 675           use_fullscreen = true;
 676         }
 677       else if (strcmp(argv[i], "--window") == 0 ||
 678                strcmp(argv[i], "-w") == 0)
 679         {
 680           use_fullscreen = false;
 681         }
 682       else if (strcmp(argv[i], "--joystick") == 0 || strcmp(argv[i], "-j") == 0)
 683         {
 684           assert(i+1 < argc);
 685           joystick_num = atoi(argv[++i]);
 686         }
 687       else if (strcmp(argv[i], "--joymap") == 0)
 688         {
 689           assert(i+1 < argc);
 690           if (sscanf(argv[++i],
 691                      "%d:%d:%d:%d:%d",
 692                      &joystick_keymap.x_axis,
 693                      &joystick_keymap.y_axis,
 694                      &joystick_keymap.a_button,
 695                      &joystick_keymap.b_button,
 696                      &joystick_keymap.start_button) != 5)
 697             {
 698               puts("Warning: Invalid or incomplete joymap, should be: 'XAXIS:YAXIS:A:B:START'");
 699             }
 700           else
 701             {
 702               std::cout << "Using new joymap:\n"
 703                         << "  X-Axis:       " << joystick_keymap.x_axis << "\n"
 704                         << "  Y-Axis:       " << joystick_keymap.y_axis << "\n"
 705                         << "  A-Button:     " << joystick_keymap.a_button << "\n"
 706                         << "  B-Button:     " << joystick_keymap.b_button << "\n"
 707                         << "  Start-Button: " << joystick_keymap.start_button << std::endl;
 708             }
 709         }
 710       else if (strcmp(argv[i], "--leveleditor") == 0)
 711         {
 712           launch_leveleditor_mode = true;
 713         }
 714       else if (strcmp(argv[i], "--worldmap") == 0)
 715         {
 716           launch_worldmap_mode = true;
 717         }
 718       else if (strcmp(argv[i], "--datadir") == 0
 719                || strcmp(argv[i], "-d") == 0 )
 720         {
 721           assert(i+1 < argc);
 722           datadir = argv[++i];
 723         }
 724       else if (strcmp(argv[i], "--show-fps") == 0)
 725         {
 726           /* Use full screen: */
 727
 728           show_fps = true;
 729         }
 730       else if (strcmp(argv[i], "--opengl") == 0 ||
 731                strcmp(argv[i], "-gl") == 0)
 732         {
 733 #ifndef NOOPENGL
 734           /* Use OpengGL: */
 735
 736           use_gl = true;
 737 #endif
 738         }
 739       else if (strcmp(argv[i], "--sdl") == 0)
 740           {
 741             use_gl = false;
 742           }
 743       else if (strcmp(argv[i], "--usage") == 0)
 744         {
 745           /* Show usage: */
 746
 747           usage(argv[0], 0);
 748         }
 749       else if (strcmp(argv[i], "--version") == 0)
 750         {
 751           /* Show version: */
 752           printf((package_name + package_version + "\n").c_str() );
 753           exit(0);
 754         }
 755       else if (strcmp(argv[i], "--disable-sound") == 0)
 756         {
 757           /* Disable the compiled in sound feature */
 758           printf("Sounds disabled \n");
 759           SoundManager::get()->enable_sound(false);
 760         }
 761       else if (strcmp(argv[i], "--disable-music") == 0)
 762         {
 763           /* Disable the compiled in sound feature */
 764           printf("Music disabled \n");
 765           SoundManager::get()->enable_music(false);
 766         }
 767       else if (strcmp(argv[i], "--debug") == 0)
 768         {
 769           /* Enable the debug-mode */
 770           debug_mode = true;
 771
 772         }
 773       else if (strcmp(argv[i], "--help") == 0)
 774         {     /* Show help: */
 775           puts(_(("  SuperTux  " + package_version + "\n"
 776                "  Please see the file \"README.txt\" for more details.\n").c_str()));
 777           printf(_("Usage: %s [OPTIONS] FILENAME\n\n"), argv[0]);
 778           puts(_("Display Options:\n"
 779                "  -f, --fullscreen    Run in fullscreen mode.\n"
 780                "  -w, --window        Run in window mode.\n"
 781                "  --opengl            If OpenGL support was compiled in, this will tell\n"
 782                "                      SuperTux to make use of it.\n"
 783                "  --sdl               Use the SDL software graphical renderer\n"
 784                "\n"
 785                "Sound Options:\n"
 786                "  --disable-sound     If sound support was compiled in,  this will\n"
 787                "                      disable sound for this session of the game.\n"
 788                "  --disable-music     Like above, but this will disable music.\n"
 789                "\n"
 790                "Misc Options:\n"
 791                "  -j, --joystick NUM  Use joystick NUM (default: 0)\n"
 792                "  --joymap XAXIS:YAXIS:A:B:START\n"
 793                "                      Define how joystick buttons and axis should be mapped\n"
 794                "  --leveleditor       Opens the leveleditor in a file.\n"
 795                "  --worldmap          Opens the specified worldmap file.\n"
 796                "  -d, --datadir DIR   Load Game data from DIR (default: automatic)\n"
 797                "  --debug             Enables the debug mode, which is useful for developers.\n"
 798                "  --help              Display a help message summarizing command-line\n"
 799                "                      options, license and game controls.\n"
 800                "  --usage             Display a brief message summarizing command-line options.\n"
 801                "  --version           Display the version of SuperTux you're running.\n\n"
 802                ));
 803           exit(0);
 804         }
 805       else if (argv[i][0] != '-')
 806         {
 807           level_startup_file = argv[i];
 808         }
 809       else
 810         {
 811           /* Unknown - complain! */
 812
 813           usage(argv[0], 1);
 814         }
 815     }
 816 }
 817
 818
 819 /* Display usage: */
 820
 821 void usage(char * prog, int ret)
 822 {
 823   FILE * fi;
 824
 825
 826   /* Determine which stream to write to: */
 827
 828   if (ret == 0)
 829     fi = stdout;
 830   else
 831     fi = stderr;
 832
 833
 834   /* Display the usage message: */
 835
 836   fprintf(fi, _("Usage: %s [--fullscreen] [--opengl] [--disable-sound] [--disable-music] [--debug] | [--usage | --help | --version] [--leveleditor] [--worldmap] FILENAME\n"),
 837           prog);
 838
 839
 840   /* Quit! */
 841
 842   exit(ret);
 843 }
 844
 845 std::set<std::string> FileSystem::read_directory(const std::string& pathname)
 846 {
 847   std::set<std::string> dirnames;
 848
 849   DIR* dir = opendir(pathname.c_str());
 850   if (dir)
 851     {
 852       struct dirent *direntp;
 853
 854       while((direntp = readdir(dir)))
 855         {
 856           dirnames.insert(direntp->d_name);
 857         }
 858
 859       closedir(dir);
 860     }
 861
 862   return dirnames;
 863 }
 864
 865 /* EOF */