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 string_list_type FileSystem::dsubdirs(const char *rel_path,const  char* expected_file)
 123 {
 124   DIR *dirStructP;
 125   struct dirent *direntp;
 126   string_list_type sdirs;
 127   char filename[1024];
 128   char path[1024];
 129
 130   string_list_init(&sdirs);
 131   sprintf(path,"%s/%s",st_dir,rel_path);
 132   if((dirStructP = opendir(path)) != NULL)
 133     {
 134       while((direntp = readdir(dirStructP)) != NULL)
 135         {
 136           char absolute_filename[1024];
 137           struct stat buf;
 138
 139           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 140
 141           if (stat(absolute_filename, &buf) == 0 && S_ISDIR(buf.st_mode))
 142             {
 143               if(expected_file != NULL)
 144                 {
 145                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 146                   if(!faccessible(filename))
 147                     continue;
 148                 }
 149
 150               string_list_add_item(&sdirs,direntp->d_name);
 151             }
 152         }
 153       closedir(dirStructP);
 154     }
 155
 156   sprintf(path,"%s/%s",datadir.c_str(),rel_path);
 157   if((dirStructP = opendir(path)) != NULL)
 158     {
 159       while((direntp = readdir(dirStructP)) != NULL)
 160         {
 161           char absolute_filename[1024];
 162           struct stat buf;
 163
 164           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 165
 166           if (stat(absolute_filename, &buf) == 0 && S_ISDIR(buf.st_mode))
 167             {
 168               if(expected_file != NULL)
 169                 {
 170                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 171                   if(!faccessible(filename))
 172                     {
 173                       continue;
 174                     }
 175                   else
 176                     {
 177                       sprintf(filename,"%s/%s/%s/%s",st_dir,rel_path,direntp->d_name,expected_file);
 178                       if(faccessible(filename))
 179                         continue;
 180                     }
 181                 }
 182
 183               string_list_add_item(&sdirs,direntp->d_name);
 184             }
 185         }
 186       closedir(dirStructP);
 187     }
 188
 189   return sdirs;
 190 }
 191
 192 string_list_type FileSystem::dfiles(const char *rel_path, const  char* glob, const  char* exception_str)
 193 {
 194   DIR *dirStructP;
 195   struct dirent *direntp;
 196   string_list_type sdirs;
 197   char path[1024];
 198
 199   string_list_init(&sdirs);
 200   sprintf(path,"%s/%s",st_dir,rel_path);
 201   if((dirStructP = opendir(path)) != NULL)
 202     {
 203       while((direntp = readdir(dirStructP)) != NULL)
 204         {
 205           char absolute_filename[1024];
 206           struct stat buf;
 207
 208           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 209
 210           if (stat(absolute_filename, &buf) == 0 && S_ISREG(buf.st_mode))
 211             {
 212               if(exception_str != NULL)
 213                 {
 214                   if(strstr(direntp->d_name,exception_str) != NULL)
 215                     continue;
 216                 }
 217               if(glob != NULL)
 218                 if(strstr(direntp->d_name,glob) == NULL)
 219                   continue;
 220
 221               string_list_add_item(&sdirs,direntp->d_name);
 222             }
 223         }
 224       closedir(dirStructP);
 225     }
 226
 227   sprintf(path,"%s/%s",datadir.c_str(),rel_path);
 228   if((dirStructP = opendir(path)) != NULL)
 229     {
 230       while((direntp = readdir(dirStructP)) != NULL)
 231         {
 232           char absolute_filename[1024];
 233           struct stat buf;
 234
 235           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 236
 237           if (stat(absolute_filename, &buf) == 0 && S_ISREG(buf.st_mode))
 238             {
 239               if(exception_str != NULL)
 240                 {
 241                   if(strstr(direntp->d_name,exception_str) != NULL)
 242                     continue;
 243                 }
 244               if(glob != NULL)
 245                 if(strstr(direntp->d_name,glob) == NULL)
 246                   continue;
 247
 248               string_list_add_item(&sdirs,direntp->d_name);
 249             }
 250         }
 251       closedir(dirStructP);
 252     }
 253
 254   return sdirs;
 255 }
 256
 257 void Setup::info(const std::string& _package_name, const std::string& _package_symbol_name, const std::string& _package_version)
 258 {
 259 package_name = _package_name;
 260 package_symbol_name = _package_symbol_name;
 261 package_version = _package_version;
 262 }
 263
 264 /* --- SETUP --- */
 265 /* Set SuperTux configuration and save directories */
 266 void Setup::directories(void)
 267 {
 268   char *home;
 269   char str[1024];
 270   /* Get home directory (from $HOME variable)... if we can't determine it,
 271      use the current directory ("."): */
 272   if (getenv("HOME") != NULL)
 273     home = getenv("HOME");
 274   else
 275     home = ".";
 276
 277   std::string st_dir_tmp = "/." + package_symbol_name;
 278   st_dir = (char *) malloc(sizeof(char) * (strlen(home) +
 279                                            strlen(st_dir_tmp.c_str()) + 1));
 280   strcpy(st_dir, home);
 281   strcat(st_dir,st_dir_tmp.c_str());
 282
 283   /* Remove .supertux config-file from old SuperTux versions */
 284   if(FileSystem::faccessible(st_dir))
 285     {
 286       remove
 287         (st_dir);
 288     }
 289
 290   st_save_dir = (char *) malloc(sizeof(char) * (strlen(st_dir) + strlen("/save") + 1));
 291
 292   strcpy(st_save_dir,st_dir);
 293   strcat(st_save_dir,"/save");
 294
 295   /* Create them. In the case they exist they won't destroy anything. */
 296   mkdir(st_dir, 0755);
 297   mkdir(st_save_dir, 0755);
 298
 299   sprintf(str, "%s/levels", st_dir);
 300   mkdir(str, 0755);
 301
 302   // User has not that a datadir, so we try some magic
 303   if (datadir.empty())
 304     {
 305 #ifndef WIN32
 306       // Detect datadir
 307       char exe_file[PATH_MAX];
 308       if (readlink("/proc/self/exe", exe_file, PATH_MAX) < 0)
 309         {
 310           puts("Couldn't read /proc/self/exe, using default path: " DATA_PREFIX);
 311           datadir = DATA_PREFIX;
 312         }
 313       else
 314         {
 315           std::string exedir = std::string(dirname(exe_file)) + "/";
 316
 317           datadir = exedir + "../data"; // SuperTux run from source dir
 318           if (access(datadir.c_str(), F_OK) != 0)
 319             {
 320               datadir = exedir + "../share/" + package_symbol_name; // SuperTux run from PATH
 321               if (access(datadir.c_str(), F_OK) != 0)
 322                 { // If all fails, fall back to compiled path
 323                   datadir = DATA_PREFIX;
 324                 }
 325             }
 326         }
 327 #else
 328   datadir = DATA_PREFIX;
 329 #endif
 330     }
 331   printf("Datadir: %s\n", datadir.c_str());
 332 }
 333
 334 void Setup::general(void)
 335 {
 336   /* Seed random number generator: */
 337
 338   srand(SDL_GetTicks());
 339
 340   /* Set icon image: */
 341
 342   seticon();
 343
 344   /* Unicode needed for input handling: */
 345
 346   SDL_EnableUNICODE(1);
 347
 348   /* Load GUI/menu images: */
 349   checkbox = new Surface(datadir + "/images/status/checkbox.png", true);
 350   checkbox_checked = new Surface(datadir + "/images/status/checkbox-checked.png", true);
 351   back = new Surface(datadir + "/images/status/back.png", true);
 352   arrow_left = new Surface(datadir + "/images/icons/left.png", true);
 353   arrow_right = new Surface(datadir + "/images/icons/right.png", true);
 354
 355   /* Load the mouse-cursor */
 356   mouse_cursor = new MouseCursor( datadir + "/images/status/mousecursor.png",1);
 357   MouseCursor::set_current(mouse_cursor);
 358
 359 }
 360
 361 void Setup::general_free(void)
 362 {
 363
 364   /* Free GUI/menu images: */
 365   delete checkbox;
 366   delete checkbox_checked;
 367   delete back;
 368   delete arrow_left;
 369   delete arrow_right;
 370
 371   /* Free mouse-cursor */
 372   delete mouse_cursor;
 373
 374 }
 375
 376 void Setup::video(unsigned int screen_w, unsigned int screen_h)
 377 {
 378   /* Init SDL Video: */
 379   if (SDL_Init(SDL_INIT_VIDEO) < 0)
 380     {
 381       fprintf(stderr,
 382               "\nError: I could not initialize video!\n"
 383               "The Simple DirectMedia error that occured was:\n"
 384               "%s\n\n", SDL_GetError());
 385       exit(1);
 386     }
 387
 388   /* Open display: */
 389   if(use_gl)
 390     video_gl(screen_w, screen_h);
 391   else
 392     video_sdl(screen_w, screen_h);
 393
 394   Surface::reload_all();
 395
 396   /* Set window manager stuff: */
 397   SDL_WM_SetCaption((package_name + " " + package_version).c_str(), package_name.c_str());
 398 }
 399
 400 void Setup::video_sdl(unsigned int screen_w, unsigned int screen_h)
 401 {
 402   if (use_fullscreen)
 403     {
 404       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_FULLSCREEN ) ; /* | SDL_HWSURFACE); */
 405       if (screen == NULL)
 406         {
 407           fprintf(stderr,
 408                   "\nWarning: I could not set up fullscreen video for "
 409                   "800x600 mode.\n"
 410                   "The Simple DirectMedia error that occured was:\n"
 411                   "%s\n\n", SDL_GetError());
 412           use_fullscreen = false;
 413         }
 414     }
 415   else
 416     {
 417       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_HWSURFACE | SDL_DOUBLEBUF );
 418
 419       if (screen == NULL)
 420         {
 421           fprintf(stderr,
 422                   "\nError: I could not set up video for 800x600 mode.\n"
 423                   "The Simple DirectMedia error that occured was:\n"
 424                   "%s\n\n", SDL_GetError());
 425           exit(1);
 426         }
 427     }
 428 }
 429
 430 void Setup::video_gl(unsigned int screen_w, unsigned int screen_h)
 431 {
 432 #ifndef NOOPENGL
 433
 434   SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
 435   SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
 436   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
 437   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 438   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 439
 440   if (use_fullscreen)
 441     {
 442       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_FULLSCREEN | SDL_OPENGL) ; /* | SDL_HWSURFACE); */
 443       if (screen == NULL)
 444         {
 445           fprintf(stderr,
 446                   "\nWarning: I could not set up fullscreen video for "
 447                   "640x480 mode.\n"
 448                   "The Simple DirectMedia error that occured was:\n"
 449                   "%s\n\n", SDL_GetError());
 450           use_fullscreen = false;
 451         }
 452     }
 453   else
 454     {
 455       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_OPENGL);
 456
 457       if (screen == NULL)
 458         {
 459           fprintf(stderr,
 460                   "\nError: I could not set up video for 640x480 mode.\n"
 461                   "The Simple DirectMedia error that occured was:\n"
 462                   "%s\n\n", SDL_GetError());
 463           exit(1);
 464         }
 465     }
 466
 467   /*
 468    * Set up OpenGL for 2D rendering.
 469    */
 470   glDisable(GL_DEPTH_TEST);
 471   glDisable(GL_CULL_FACE);
 472
 473   glViewport(0, 0, screen->w, screen->h);
 474   glMatrixMode(GL_PROJECTION);
 475   glLoadIdentity();
 476   glOrtho(0, screen->w, screen->h, 0, -1.0, 1.0);
 477
 478   glMatrixMode(GL_MODELVIEW);
 479   glLoadIdentity();
 480   glTranslatef(0.0f, 0.0f, 0.0f);
 481
 482 #endif
 483
 484 }
 485
 486 void Setup::joystick(void)
 487 {
 488
 489   /* Init Joystick: */
 490
 491   use_joystick = true;
 492
 493   if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
 494     {
 495       fprintf(stderr, "Warning: I could not initialize joystick!\n"
 496               "The Simple DirectMedia error that occured was:\n"
 497               "%s\n\n", SDL_GetError());
 498
 499       use_joystick = false;
 500     }
 501   else
 502     {
 503       /* Open joystick: */
 504       if (SDL_NumJoysticks() <= 0)
 505         {
 506           fprintf(stderr, "Info: No joysticks were found.\n");
 507
 508           use_joystick = false;
 509         }
 510       else
 511         {
 512           js = SDL_JoystickOpen(joystick_num);
 513
 514           if (js == NULL)
 515             {
 516               fprintf(stderr, "Warning: Could not open joystick %d.\n"
 517                       "The Simple DirectMedia error that occured was:\n"
 518                       "%s\n\n", joystick_num, SDL_GetError());
 519
 520               use_joystick = false;
 521             }
 522           else
 523             {
 524               if (SDL_JoystickNumAxes(js) < 2)
 525                 {
 526                   fprintf(stderr,
 527                           "Warning: Joystick does not have enough axes!\n");
 528
 529                   use_joystick = false;
 530                 }
 531               else
 532                 {
 533                   if (SDL_JoystickNumButtons(js) < 2)
 534                     {
 535                       fprintf(stderr,
 536                               "Warning: "
 537                               "Joystick does not have enough buttons!\n");
 538
 539                       use_joystick = false;
 540                     }
 541                 }
 542             }
 543         }
 544     }
 545 }
 546
 547 void Setup::audio(void)
 548 {
 549
 550   /* Init SDL Audio silently even if --disable-sound : */
 551
 552   if (SoundManager::get()->audio_device_available())
 553     {
 554       if (SDL_Init(SDL_INIT_AUDIO) < 0)
 555         {
 556           /* only print out message if sound or music
 557              was not disabled at command-line
 558            */
 559           if (SoundManager::get()->sound_enabled() || SoundManager::get()->music_enabled())
 560             {
 561               fprintf(stderr,
 562                       "\nWarning: I could not initialize audio!\n"
 563                       "The Simple DirectMedia error that occured was:\n"
 564                       "%s\n\n", SDL_GetError());
 565             }
 566           /* keep the programming logic the same :-)
 567              because in this case, use_sound & use_music' values are ignored
 568              when there's no available audio device
 569           */
 570           SoundManager::get()->enable_sound(false);
 571           SoundManager::get()->enable_music(false);
 572           SoundManager::get()->set_audio_device_available(false);
 573         }
 574     }
 575
 576
 577   /* Open sound silently regarless the value of "use_sound": */
 578
 579   if (SoundManager::get()->audio_device_available())
 580     {
 581       if (SoundManager::get()->open_audio(44100, AUDIO_S16, 2, 2048) < 0)
 582         {
 583           /* only print out message if sound or music
 584              was not disabled at command-line
 585            */
 586           if (SoundManager::get()->sound_enabled() || SoundManager::get()->music_enabled())
 587             {
 588               fprintf(stderr,
 589                       "\nWarning: I could not set up audio for 44100 Hz "
 590                       "16-bit stereo.\n"
 591                       "The Simple DirectMedia error that occured was:\n"
 592                       "%s\n\n", SDL_GetError());
 593             }
 594           SoundManager::get()->enable_sound(false);
 595           SoundManager::get()->enable_music(false);
 596           SoundManager::get()->set_audio_device_available(false);
 597         }
 598     }
 599
 600 }
 601
 602
 603 /* --- SHUTDOWN --- */
 604
 605 void Termination::shutdown(void)
 606 {
 607   config->save();
 608   SoundManager::get()->close_audio();
 609   SDL_Quit();
 610 }
 611
 612 /* --- ABORT! --- */
 613
 614 void Termination::abort(const std::string& reason, const std::string& details)
 615 {
 616   fprintf(stderr, "\nError: %s\n%s\n\n", reason.c_str(), details.c_str());
 617   shutdown();
 618   ::abort();
 619 }
 620
 621 /* Set Icon (private) */
 622
 623 void seticon(void)
 624 {
 625 //  int masklen;
 626 //  Uint8 * mask;
 627   SDL_Surface * icon;
 628
 629
 630   /* Load icon into a surface: */
 631
 632   icon = IMG_Load((datadir + "/images/" + package_symbol_name + ".xpm").c_str());
 633   if (icon == NULL)
 634     {
 635       fprintf(stderr,
 636               "\nError: I could not load the icon image: %s%s\n"
 637               "The Simple DirectMedia error that occured was:\n"
 638               "%s\n\n", datadir.c_str(), ("/images/" + package_symbol_name + ".xpm").c_str(), SDL_GetError());
 639       exit(1);
 640     }
 641
 642
 643   /* Create mask: */
 644 /*
 645   masklen = (((icon -> w) + 7) / 8) * (icon -> h);
 646   mask = (Uint8*) malloc(masklen * sizeof(Uint8));
 647   memset(mask, 0xFF, masklen);
 648 */
 649
 650   /* Set icon: */
 651
 652   SDL_WM_SetIcon(icon, NULL);//mask);
 653
 654
 655   /* Free icon surface & mask: */
 656
 657 //  free(mask);
 658   SDL_FreeSurface(icon);
 659 }
 660
 661
 662 /* Parse command-line arguments: */
 663
 664 void Setup::parseargs(int argc, char * argv[])
 665 {
 666   int i;
 667
 668   config->load();
 669
 670   /* Parse arguments: */
 671
 672   for (i = 1; i < argc; i++)
 673     {
 674       if (strcmp(argv[i], "--fullscreen") == 0 ||
 675           strcmp(argv[i], "-f") == 0)
 676         {
 677           use_fullscreen = true;
 678         }
 679       else if (strcmp(argv[i], "--window") == 0 ||
 680                strcmp(argv[i], "-w") == 0)
 681         {
 682           use_fullscreen = false;
 683         }
 684       else if (strcmp(argv[i], "--joystick") == 0 || strcmp(argv[i], "-j") == 0)
 685         {
 686           assert(i+1 < argc);
 687           joystick_num = atoi(argv[++i]);
 688         }
 689       else if (strcmp(argv[i], "--joymap") == 0)
 690         {
 691           assert(i+1 < argc);
 692           if (sscanf(argv[++i],
 693                      "%d:%d:%d:%d:%d",
 694                      &joystick_keymap.x_axis,
 695                      &joystick_keymap.y_axis,
 696                      &joystick_keymap.a_button,
 697                      &joystick_keymap.b_button,
 698                      &joystick_keymap.start_button) != 5)
 699             {
 700               puts("Warning: Invalid or incomplete joymap, should be: 'XAXIS:YAXIS:A:B:START'");
 701             }
 702           else
 703             {
 704               std::cout << "Using new joymap:\n"
 705                         << "  X-Axis:       " << joystick_keymap.x_axis << "\n"
 706                         << "  Y-Axis:       " << joystick_keymap.y_axis << "\n"
 707                         << "  A-Button:     " << joystick_keymap.a_button << "\n"
 708                         << "  B-Button:     " << joystick_keymap.b_button << "\n"
 709                         << "  Start-Button: " << joystick_keymap.start_button << std::endl;
 710             }
 711         }
 712       else if (strcmp(argv[i], "--leveleditor") == 0)
 713         {
 714           launch_leveleditor_mode = true;
 715         }
 716       else if (strcmp(argv[i], "--worldmap") == 0)
 717         {
 718           launch_worldmap_mode = true;
 719         }
 720       else if (strcmp(argv[i], "--datadir") == 0
 721                || strcmp(argv[i], "-d") == 0 )
 722         {
 723           assert(i+1 < argc);
 724           datadir = argv[++i];
 725         }
 726       else if (strcmp(argv[i], "--show-fps") == 0)
 727         {
 728           /* Use full screen: */
 729
 730           show_fps = true;
 731         }
 732       else if (strcmp(argv[i], "--opengl") == 0 ||
 733                strcmp(argv[i], "-gl") == 0)
 734         {
 735 #ifndef NOOPENGL
 736           /* Use OpengGL: */
 737
 738           use_gl = true;
 739 #endif
 740         }
 741       else if (strcmp(argv[i], "--sdl") == 0)
 742           {
 743             use_gl = false;
 744           }
 745       else if (strcmp(argv[i], "--usage") == 0)
 746         {
 747           /* Show usage: */
 748
 749           usage(argv[0], 0);
 750         }
 751       else if (strcmp(argv[i], "--version") == 0)
 752         {
 753           /* Show version: */
 754           printf((package_name + package_version + "\n").c_str() );
 755           exit(0);
 756         }
 757       else if (strcmp(argv[i], "--disable-sound") == 0)
 758         {
 759           /* Disable the compiled in sound feature */
 760           printf("Sounds disabled \n");
 761           SoundManager::get()->enable_sound(false);
 762         }
 763       else if (strcmp(argv[i], "--disable-music") == 0)
 764         {
 765           /* Disable the compiled in sound feature */
 766           printf("Music disabled \n");
 767           SoundManager::get()->enable_music(false);
 768         }
 769       else if (strcmp(argv[i], "--debug") == 0)
 770         {
 771           /* Enable the debug-mode */
 772           debug_mode = true;
 773
 774         }
 775       else if (strcmp(argv[i], "--help") == 0)
 776         {     /* Show help: */
 777           puts(_(("  SuperTux  " + package_version + "\n"
 778                "  Please see the file \"README.txt\" for more details.\n").c_str()));
 779           printf(_("Usage: %s [OPTIONS] FILENAME\n\n"), argv[0]);
 780           puts(_("Display Options:\n"
 781                "  -f, --fullscreen    Run in fullscreen mode.\n"
 782                "  -w, --window        Run in window mode.\n"
 783                "  --opengl            If OpenGL support was compiled in, this will tell\n"
 784                "                      SuperTux to make use of it.\n"
 785                "  --sdl               Use the SDL software graphical renderer\n"
 786                "\n"
 787                "Sound Options:\n"
 788                "  --disable-sound     If sound support was compiled in,  this will\n"
 789                "                      disable sound for this session of the game.\n"
 790                "  --disable-music     Like above, but this will disable music.\n"
 791                "\n"
 792                "Misc Options:\n"
 793                "  -j, --joystick NUM  Use joystick NUM (default: 0)\n"
 794                "  --joymap XAXIS:YAXIS:A:B:START\n"
 795                "                      Define how joystick buttons and axis should be mapped\n"
 796                "  --leveleditor       Opens the leveleditor in a file.\n"
 797                "  --worldmap          Opens the specified worldmap file.\n"
 798                "  -d, --datadir DIR   Load Game data from DIR (default: automatic)\n"
 799                "  --debug             Enables the debug mode, which is useful for developers.\n"
 800                "  --help              Display a help message summarizing command-line\n"
 801                "                      options, license and game controls.\n"
 802                "  --usage             Display a brief message summarizing command-line options.\n"
 803                "  --version           Display the version of SuperTux you're running.\n\n"
 804                ));
 805           exit(0);
 806         }
 807       else if (argv[i][0] != '-')
 808         {
 809           level_startup_file = argv[i];
 810         }
 811       else
 812         {
 813           /* Unknown - complain! */
 814
 815           usage(argv[0], 1);
 816         }
 817     }
 818 }
 819
 820
 821 /* Display usage: */
 822
 823 void usage(char * prog, int ret)
 824 {
 825   FILE * fi;
 826
 827
 828   /* Determine which stream to write to: */
 829
 830   if (ret == 0)
 831     fi = stdout;
 832   else
 833     fi = stderr;
 834
 835
 836   /* Display the usage message: */
 837
 838   fprintf(fi, _("Usage: %s [--fullscreen] [--opengl] [--disable-sound] [--disable-music] [--debug] | [--usage | --help | --version] [--leveleditor] [--worldmap] FILENAME\n"),
 839           prog);
 840
 841
 842   /* Quit! */
 843
 844   exit(ret);
 845 }
 846
 847 std::vector<std::string> FileSystem::read_directory(const std::string& pathname)
 848 {
 849   std::vector<std::string> dirnames;
 850
 851   DIR* dir = opendir(pathname.c_str());
 852   if (dir)
 853     {
 854       struct dirent *direntp;
 855
 856       while((direntp = readdir(dir)))
 857         {
 858           dirnames.push_back(direntp->d_name);
 859         }
 860
 861       closedir(dir);
 862     }
 863
 864   return dirnames;
 865 }
 866
 867 /* EOF */