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/defines.h"
  46 #include "../app/setup.h"
  47 #include "../video/screen.h"
  48 #include "../video/surface.h"
  49 #include "../gui/menu.h"
  50 #include "../utils/configfile.h"
  51 #include "../audio/sound_manager.h"
  52 #include "../app/gettext.h"
  53
  54 using namespace SuperTux;
  55
  56 #ifdef WIN32
  57 #define mkdir(dir, mode)    mkdir(dir)
  58 // on win32 we typically don't want LFS paths
  59 #undef DATA_PREFIX
  60 #define DATA_PREFIX "./data/"
  61 #endif
  62
  63 /* Local function prototypes: */
  64
  65 void seticon(void);
  66 void usage(char * prog, int ret);
  67
  68 /* Does the given file exist and is it accessible? */
  69 int FileSystem::faccessible(const char *filename)
  70 {
  71   struct stat filestat;
  72   if (stat(filename, &filestat) == -1)
  73     {
  74       return false;
  75     }
  76   else
  77     {
  78       if(S_ISREG(filestat.st_mode))
  79         return true;
  80       else
  81         return false;
  82     }
  83 }
  84
  85 /* Can we write to this location? */
  86 int FileSystem::fwriteable(const char *filename)
  87 {
  88   FILE* fi;
  89   fi = fopen(filename, "wa");
  90   if (fi == NULL)
  91     {
  92       return false;
  93     }
  94   return true;
  95 }
  96
  97 /* Makes sure a directory is created in either the SuperTux home directory or the SuperTux base directory.*/
  98 int FileSystem::fcreatedir(const char* relative_dir)
  99 {
 100   char path[1024];
 101   snprintf(path, 1024, "%s/%s/", st_dir, relative_dir);
 102   if(mkdir(path,0755) != 0)
 103     {
 104       snprintf(path, 1024, "%s/%s/", datadir.c_str(), relative_dir);
 105       if(mkdir(path,0755) != 0)
 106         {
 107           return false;
 108         }
 109       else
 110         {
 111           return true;
 112         }
 113     }
 114   else
 115     {
 116       return true;
 117     }
 118 }
 119
 120 /* Get all names of sub-directories in a certain directory. */
 121 /* Returns the number of sub-directories found. */
 122 /* Note: The user has to free the allocated space. */
 123 string_list_type FileSystem::dsubdirs(const char *rel_path,const  char* expected_file)
 124 {
 125   DIR *dirStructP;
 126   struct dirent *direntp;
 127   string_list_type sdirs;
 128   char filename[1024];
 129   char path[1024];
 130
 131   string_list_init(&sdirs);
 132   sprintf(path,"%s/%s",st_dir,rel_path);
 133   if((dirStructP = opendir(path)) != NULL)
 134     {
 135       while((direntp = readdir(dirStructP)) != NULL)
 136         {
 137           char absolute_filename[1024];
 138           struct stat buf;
 139
 140           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 141
 142           if (stat(absolute_filename, &buf) == 0 && S_ISDIR(buf.st_mode))
 143             {
 144               if(expected_file != NULL)
 145                 {
 146                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 147                   if(!faccessible(filename))
 148                     continue;
 149                 }
 150
 151               string_list_add_item(&sdirs,direntp->d_name);
 152             }
 153         }
 154       closedir(dirStructP);
 155     }
 156
 157   sprintf(path,"%s/%s",datadir.c_str(),rel_path);
 158   if((dirStructP = opendir(path)) != NULL)
 159     {
 160       while((direntp = readdir(dirStructP)) != NULL)
 161         {
 162           char absolute_filename[1024];
 163           struct stat buf;
 164
 165           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 166
 167           if (stat(absolute_filename, &buf) == 0 && S_ISDIR(buf.st_mode))
 168             {
 169               if(expected_file != NULL)
 170                 {
 171                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 172                   if(!faccessible(filename))
 173                     {
 174                       continue;
 175                     }
 176                   else
 177                     {
 178                       sprintf(filename,"%s/%s/%s/%s",st_dir,rel_path,direntp->d_name,expected_file);
 179                       if(faccessible(filename))
 180                         continue;
 181                     }
 182                 }
 183
 184               string_list_add_item(&sdirs,direntp->d_name);
 185             }
 186         }
 187       closedir(dirStructP);
 188     }
 189
 190   return sdirs;
 191 }
 192
 193 string_list_type FileSystem::dfiles(const char *rel_path, const  char* glob, const  char* exception_str)
 194 {
 195   DIR *dirStructP;
 196   struct dirent *direntp;
 197   string_list_type sdirs;
 198   char path[1024];
 199
 200   string_list_init(&sdirs);
 201   sprintf(path,"%s/%s",st_dir,rel_path);
 202   if((dirStructP = opendir(path)) != NULL)
 203     {
 204       while((direntp = readdir(dirStructP)) != NULL)
 205         {
 206           char absolute_filename[1024];
 207           struct stat buf;
 208
 209           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 210
 211           if (stat(absolute_filename, &buf) == 0 && S_ISREG(buf.st_mode))
 212             {
 213               if(exception_str != NULL)
 214                 {
 215                   if(strstr(direntp->d_name,exception_str) != NULL)
 216                     continue;
 217                 }
 218               if(glob != NULL)
 219                 if(strstr(direntp->d_name,glob) == NULL)
 220                   continue;
 221
 222               string_list_add_item(&sdirs,direntp->d_name);
 223             }
 224         }
 225       closedir(dirStructP);
 226     }
 227
 228   sprintf(path,"%s/%s",datadir.c_str(),rel_path);
 229   if((dirStructP = opendir(path)) != NULL)
 230     {
 231       while((direntp = readdir(dirStructP)) != NULL)
 232         {
 233           char absolute_filename[1024];
 234           struct stat buf;
 235
 236           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 237
 238           if (stat(absolute_filename, &buf) == 0 && S_ISREG(buf.st_mode))
 239             {
 240               if(exception_str != NULL)
 241                 {
 242                   if(strstr(direntp->d_name,exception_str) != NULL)
 243                     continue;
 244                 }
 245               if(glob != NULL)
 246                 if(strstr(direntp->d_name,glob) == NULL)
 247                   continue;
 248
 249               string_list_add_item(&sdirs,direntp->d_name);
 250             }
 251         }
 252       closedir(dirStructP);
 253     }
 254
 255   return sdirs;
 256 }
 257
 258 void Setup::info(const std::string& _package_name, const std::string& _package_symbol_name, const std::string& _package_version)
 259 {
 260 package_name = _package_name;
 261 package_symbol_name = _package_symbol_name;
 262 package_version = _package_version;
 263 }
 264
 265 /* --- SETUP --- */
 266 /* Set SuperTux configuration and save directories */
 267 void Setup::directories(void)
 268 {
 269   char *home;
 270   char str[1024];
 271   /* Get home directory (from $HOME variable)... if we can't determine it,
 272      use the current directory ("."): */
 273   if (getenv("HOME") != NULL)
 274     home = getenv("HOME");
 275   else
 276     home = ".";
 277
 278   std::string st_dir_tmp = "/." + package_symbol_name;
 279   st_dir = (char *) malloc(sizeof(char) * (strlen(home) +
 280                                            strlen(st_dir_tmp.c_str()) + 1));
 281   strcpy(st_dir, home);
 282   strcat(st_dir,st_dir_tmp.c_str());
 283
 284   /* Remove .supertux config-file from old SuperTux versions */
 285   if(FileSystem::faccessible(st_dir))
 286     {
 287       remove
 288         (st_dir);
 289     }
 290
 291   st_save_dir = (char *) malloc(sizeof(char) * (strlen(st_dir) + strlen("/save") + 1));
 292
 293   strcpy(st_save_dir,st_dir);
 294   strcat(st_save_dir,"/save");
 295
 296   /* Create them. In the case they exist they won't destroy anything. */
 297   mkdir(st_dir, 0755);
 298   mkdir(st_save_dir, 0755);
 299
 300   sprintf(str, "%s/levels", st_dir);
 301   mkdir(str, 0755);
 302
 303   // User has not that a datadir, so we try some magic
 304   if (datadir.empty())
 305     {
 306 #ifndef WIN32
 307       // Detect datadir
 308       char exe_file[PATH_MAX];
 309       if (readlink("/proc/self/exe", exe_file, PATH_MAX) < 0)
 310         {
 311           puts("Couldn't read /proc/self/exe, using default path: " DATA_PREFIX);
 312           datadir = DATA_PREFIX;
 313         }
 314       else
 315         {
 316           std::string exedir = std::string(dirname(exe_file)) + "/";
 317
 318           datadir = exedir + "../data"; // SuperTux run from source dir
 319           if (access(datadir.c_str(), F_OK) != 0)
 320             {
 321               datadir = exedir + "../share/" + package_symbol_name; // SuperTux run from PATH
 322               if (access(datadir.c_str(), F_OK) != 0)
 323                 { // If all fails, fall back to compiled path
 324                   datadir = DATA_PREFIX;
 325                 }
 326             }
 327         }
 328 #else
 329   datadir = DATA_PREFIX;
 330 #endif
 331     }
 332   printf("Datadir: %s\n", datadir.c_str());
 333 }
 334
 335 void Setup::general(void)
 336 {
 337   /* Seed random number generator: */
 338
 339   srand(SDL_GetTicks());
 340
 341   /* Set icon image: */
 342
 343   seticon();
 344
 345   /* Unicode needed for input handling: */
 346
 347   SDL_EnableUNICODE(1);
 348
 349   /* Load GUI/menu images: */
 350   checkbox = new Surface(datadir + "/images/status/checkbox.png", true);
 351   checkbox_checked = new Surface(datadir + "/images/status/checkbox-checked.png", true);
 352   back = new Surface(datadir + "/images/status/back.png", true);
 353   arrow_left = new Surface(datadir + "/images/icons/left.png", true);
 354   arrow_right = new Surface(datadir + "/images/icons/right.png", true);
 355
 356   /* Load the mouse-cursor */
 357   mouse_cursor = new MouseCursor( datadir + "/images/status/mousecursor.png",1);
 358   MouseCursor::set_current(mouse_cursor);
 359
 360 }
 361
 362 void Setup::general_free(void)
 363 {
 364
 365   /* Free GUI/menu images: */
 366   delete checkbox;
 367   delete checkbox_checked;
 368   delete back;
 369   delete arrow_left;
 370   delete arrow_right;
 371
 372   /* Free mouse-cursor */
 373   delete mouse_cursor;
 374
 375 }
 376
 377 void Setup::video(unsigned int screen_w, unsigned int screen_h)
 378 {
 379   /* Init SDL Video: */
 380   if (SDL_Init(SDL_INIT_VIDEO) < 0)
 381     {
 382       fprintf(stderr,
 383               "\nError: I could not initialize video!\n"
 384               "The Simple DirectMedia error that occured was:\n"
 385               "%s\n\n", SDL_GetError());
 386       exit(1);
 387     }
 388
 389   /* Open display: */
 390   if(use_gl)
 391     video_gl(screen_w, screen_h);
 392   else
 393     video_sdl(screen_w, screen_h);
 394
 395   Surface::reload_all();
 396
 397   /* Set window manager stuff: */
 398   SDL_WM_SetCaption((package_name + " " + package_version).c_str(), package_name.c_str());
 399 }
 400
 401 void Setup::video_sdl(unsigned int screen_w, unsigned int screen_h)
 402 {
 403   if (use_fullscreen)
 404     {
 405       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_FULLSCREEN ) ; /* | SDL_HWSURFACE); */
 406       if (screen == NULL)
 407         {
 408           fprintf(stderr,
 409                   "\nWarning: I could not set up fullscreen video for "
 410                   "800x600 mode.\n"
 411                   "The Simple DirectMedia error that occured was:\n"
 412                   "%s\n\n", SDL_GetError());
 413           use_fullscreen = false;
 414         }
 415     }
 416   else
 417     {
 418       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_HWSURFACE | SDL_DOUBLEBUF );
 419
 420       if (screen == NULL)
 421         {
 422           fprintf(stderr,
 423                   "\nError: I could not set up video for 800x600 mode.\n"
 424                   "The Simple DirectMedia error that occured was:\n"
 425                   "%s\n\n", SDL_GetError());
 426           exit(1);
 427         }
 428     }
 429 }
 430
 431 void Setup::video_gl(unsigned int screen_w, unsigned int screen_h)
 432 {
 433 #ifndef NOOPENGL
 434
 435   SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
 436   SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
 437   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
 438   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 439   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 440
 441   if (use_fullscreen)
 442     {
 443       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_FULLSCREEN | SDL_OPENGL) ; /* | SDL_HWSURFACE); */
 444       if (screen == NULL)
 445         {
 446           fprintf(stderr,
 447                   "\nWarning: I could not set up fullscreen video for "
 448                   "640x480 mode.\n"
 449                   "The Simple DirectMedia error that occured was:\n"
 450                   "%s\n\n", SDL_GetError());
 451           use_fullscreen = false;
 452         }
 453     }
 454   else
 455     {
 456       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_OPENGL);
 457
 458       if (screen == NULL)
 459         {
 460           fprintf(stderr,
 461                   "\nError: I could not set up video for 640x480 mode.\n"
 462                   "The Simple DirectMedia error that occured was:\n"
 463                   "%s\n\n", SDL_GetError());
 464           exit(1);
 465         }
 466     }
 467
 468   /*
 469    * Set up OpenGL for 2D rendering.
 470    */
 471   glDisable(GL_DEPTH_TEST);
 472   glDisable(GL_CULL_FACE);
 473
 474   glViewport(0, 0, screen->w, screen->h);
 475   glMatrixMode(GL_PROJECTION);
 476   glLoadIdentity();
 477   glOrtho(0, screen->w, screen->h, 0, -1.0, 1.0);
 478
 479   glMatrixMode(GL_MODELVIEW);
 480   glLoadIdentity();
 481   glTranslatef(0.0f, 0.0f, 0.0f);
 482
 483 #endif
 484
 485 }
 486
 487 void Setup::joystick(void)
 488 {
 489
 490   /* Init Joystick: */
 491
 492   use_joystick = true;
 493
 494   if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
 495     {
 496       fprintf(stderr, "Warning: I could not initialize joystick!\n"
 497               "The Simple DirectMedia error that occured was:\n"
 498               "%s\n\n", SDL_GetError());
 499
 500       use_joystick = false;
 501     }
 502   else
 503     {
 504       /* Open joystick: */
 505       if (SDL_NumJoysticks() <= 0)
 506         {
 507           fprintf(stderr, "Info: No joysticks were found.\n");
 508
 509           use_joystick = false;
 510         }
 511       else
 512         {
 513           js = SDL_JoystickOpen(joystick_num);
 514
 515           if (js == NULL)
 516             {
 517               fprintf(stderr, "Warning: Could not open joystick %d.\n"
 518                       "The Simple DirectMedia error that occured was:\n"
 519                       "%s\n\n", joystick_num, SDL_GetError());
 520
 521               use_joystick = false;
 522             }
 523           else
 524             {
 525               if (SDL_JoystickNumAxes(js) < 2)
 526                 {
 527                   fprintf(stderr,
 528                           "Warning: Joystick does not have enough axes!\n");
 529
 530                   use_joystick = false;
 531                 }
 532               else
 533                 {
 534                   if (SDL_JoystickNumButtons(js) < 2)
 535                     {
 536                       fprintf(stderr,
 537                               "Warning: "
 538                               "Joystick does not have enough buttons!\n");
 539
 540                       use_joystick = false;
 541                     }
 542                 }
 543             }
 544         }
 545     }
 546 }
 547
 548 void Setup::audio(void)
 549 {
 550
 551   /* Init SDL Audio silently even if --disable-sound : */
 552
 553   if (SoundManager::get()->audio_device_available())
 554     {
 555       if (SDL_Init(SDL_INIT_AUDIO) < 0)
 556         {
 557           /* only print out message if sound or music
 558              was not disabled at command-line
 559            */
 560           if (SoundManager::get()->sound_enabled() || SoundManager::get()->music_enabled())
 561             {
 562               fprintf(stderr,
 563                       "\nWarning: I could not initialize audio!\n"
 564                       "The Simple DirectMedia error that occured was:\n"
 565                       "%s\n\n", SDL_GetError());
 566             }
 567           /* keep the programming logic the same :-)
 568              because in this case, use_sound & use_music' values are ignored
 569              when there's no available audio device
 570           */
 571           SoundManager::get()->enable_sound(false);
 572           SoundManager::get()->enable_music(false);
 573           SoundManager::get()->set_audio_device_available(false);
 574         }
 575     }
 576
 577
 578   /* Open sound silently regarless the value of "use_sound": */
 579
 580   if (SoundManager::get()->audio_device_available())
 581     {
 582       if (SoundManager::get()->open_audio(44100, AUDIO_S16, 2, 2048) < 0)
 583         {
 584           /* only print out message if sound or music
 585              was not disabled at command-line
 586            */
 587           if (SoundManager::get()->sound_enabled() || SoundManager::get()->music_enabled())
 588             {
 589               fprintf(stderr,
 590                       "\nWarning: I could not set up audio for 44100 Hz "
 591                       "16-bit stereo.\n"
 592                       "The Simple DirectMedia error that occured was:\n"
 593                       "%s\n\n", SDL_GetError());
 594             }
 595           SoundManager::get()->enable_sound(false);
 596           SoundManager::get()->enable_music(false);
 597           SoundManager::get()->set_audio_device_available(false);
 598         }
 599     }
 600
 601 }
 602
 603
 604 /* --- SHUTDOWN --- */
 605
 606 void Termination::shutdown(void)
 607 {
 608   SoundManager::get()->close_audio();
 609   SDL_Quit();
 610   config->save();
 611 }
 612
 613 /* --- ABORT! --- */
 614
 615 void Termination::abort(const std::string& reason, const std::string& details)
 616 {
 617   fprintf(stderr, "\nError: %s\n%s\n\n", reason.c_str(), details.c_str());
 618   shutdown();
 619   ::abort();
 620 }
 621
 622 /* Set Icon (private) */
 623
 624 void seticon(void)
 625 {
 626 //  int masklen;
 627 //  Uint8 * mask;
 628   SDL_Surface * icon;
 629
 630
 631   /* Load icon into a surface: */
 632
 633   icon = IMG_Load((datadir + "/images/" + package_symbol_name + ".xpm").c_str());
 634   if (icon == NULL)
 635     {
 636       fprintf(stderr,
 637               "\nError: I could not load the icon image: %s%s\n"
 638               "The Simple DirectMedia error that occured was:\n"
 639               "%s\n\n", datadir.c_str(), ("/images/" + package_symbol_name + ".xpm").c_str(), SDL_GetError());
 640       exit(1);
 641     }
 642
 643
 644   /* Create mask: */
 645 /*
 646   masklen = (((icon -> w) + 7) / 8) * (icon -> h);
 647   mask = (Uint8*) malloc(masklen * sizeof(Uint8));
 648   memset(mask, 0xFF, masklen);
 649 */
 650
 651   /* Set icon: */
 652
 653   SDL_WM_SetIcon(icon, NULL);//mask);
 654
 655
 656   /* Free icon surface & mask: */
 657
 658 //  free(mask);
 659   SDL_FreeSurface(icon);
 660 }
 661
 662
 663 /* Parse command-line arguments: */
 664
 665 void Setup::parseargs(int argc, char * argv[])
 666 {
 667   int i;
 668
 669   config->load();
 670
 671   /* Parse arguments: */
 672
 673   for (i = 1; i < argc; i++)
 674     {
 675       if (strcmp(argv[i], "--fullscreen") == 0 ||
 676           strcmp(argv[i], "-f") == 0)
 677         {
 678           use_fullscreen = true;
 679         }
 680       else if (strcmp(argv[i], "--window") == 0 ||
 681                strcmp(argv[i], "-w") == 0)
 682         {
 683           use_fullscreen = false;
 684         }
 685       else if (strcmp(argv[i], "--joystick") == 0 || strcmp(argv[i], "-j") == 0)
 686         {
 687           assert(i+1 < argc);
 688           joystick_num = atoi(argv[++i]);
 689         }
 690       else if (strcmp(argv[i], "--joymap") == 0)
 691         {
 692           assert(i+1 < argc);
 693           if (sscanf(argv[++i],
 694                      "%d:%d:%d:%d:%d",
 695                      &joystick_keymap.x_axis,
 696                      &joystick_keymap.y_axis,
 697                      &joystick_keymap.a_button,
 698                      &joystick_keymap.b_button,
 699                      &joystick_keymap.start_button) != 5)
 700             {
 701               puts("Warning: Invalid or incomplete joymap, should be: 'XAXIS:YAXIS:A:B:START'");
 702             }
 703           else
 704             {
 705               std::cout << "Using new joymap:\n"
 706                         << "  X-Axis:       " << joystick_keymap.x_axis << "\n"
 707                         << "  Y-Axis:       " << joystick_keymap.y_axis << "\n"
 708                         << "  A-Button:     " << joystick_keymap.a_button << "\n"
 709                         << "  B-Button:     " << joystick_keymap.b_button << "\n"
 710                         << "  Start-Button: " << joystick_keymap.start_button << std::endl;
 711             }
 712         }
 713       else if (strcmp(argv[i], "--leveleditor") == 0)
 714         {
 715           launch_leveleditor_mode = true;
 716         }
 717       else if (strcmp(argv[i], "--worldmap") == 0)
 718         {
 719           launch_worldmap_mode = true;
 720         }
 721       else if (strcmp(argv[i], "--datadir") == 0
 722                || strcmp(argv[i], "-d") == 0 )
 723         {
 724           assert(i+1 < argc);
 725           datadir = argv[++i];
 726         }
 727       else if (strcmp(argv[i], "--show-fps") == 0)
 728         {
 729           /* Use full screen: */
 730
 731           show_fps = true;
 732         }
 733       else if (strcmp(argv[i], "--opengl") == 0 ||
 734                strcmp(argv[i], "-gl") == 0)
 735         {
 736 #ifndef NOOPENGL
 737           /* Use OpengGL: */
 738
 739           use_gl = true;
 740 #endif
 741         }
 742       else if (strcmp(argv[i], "--sdl") == 0)
 743           {
 744             use_gl = false;
 745           }
 746       else if (strcmp(argv[i], "--usage") == 0)
 747         {
 748           /* Show usage: */
 749
 750           usage(argv[0], 0);
 751         }
 752       else if (strcmp(argv[i], "--version") == 0)
 753         {
 754           /* Show version: */
 755           printf((package_name + package_version + "\n").c_str() );
 756           exit(0);
 757         }
 758       else if (strcmp(argv[i], "--disable-sound") == 0)
 759         {
 760           /* Disable the compiled in sound feature */
 761           printf("Sounds disabled \n");
 762           SoundManager::get()->enable_sound(false);
 763         }
 764       else if (strcmp(argv[i], "--disable-music") == 0)
 765         {
 766           /* Disable the compiled in sound feature */
 767           printf("Music disabled \n");
 768           SoundManager::get()->enable_music(false);
 769         }
 770       else if (strcmp(argv[i], "--debug") == 0)
 771         {
 772           /* Enable the debug-mode */
 773           debug_mode = true;
 774
 775         }
 776       else if (strcmp(argv[i], "--help") == 0)
 777         {     /* Show help: */
 778           puts(_("  SuperTux  " VERSION "\n"
 779                "  Please see the file \"README.txt\" for more details.\n"));
 780           printf(_("Usage: %s [OPTIONS] FILENAME\n\n"), argv[0]);
 781           puts(_("Display Options:\n"
 782                "  -f, --fullscreen    Run in fullscreen mode.\n"
 783                "  -w, --window        Run in window mode.\n"
 784                "  --opengl            If OpenGL support was compiled in, this will tell\n"
 785                "                      SuperTux to make use of it.\n"
 786                "  --sdl               Use the SDL software graphical renderer\n"
 787                "\n"
 788                "Sound Options:\n"
 789                "  --disable-sound     If sound support was compiled in,  this will\n"
 790                "                      disable sound for this session of the game.\n"
 791                "  --disable-music     Like above, but this will disable music.\n"
 792                "\n"
 793                "Misc Options:\n"
 794                "  -j, --joystick NUM  Use joystick NUM (default: 0)\n"
 795                "  --joymap XAXIS:YAXIS:A:B:START\n"
 796                "                      Define how joystick buttons and axis should be mapped\n"
 797                "  --leveleditor       Opens the leveleditor in a file.\n"
 798                "  --worldmap          Opens the specified worldmap file.\n"
 799                "  -d, --datadir DIR   Load Game data from DIR (default: automatic)\n"
 800                "  --debug             Enables the debug mode, which is useful for developers.\n"
 801                "  --help              Display a help message summarizing command-line\n"
 802                "                      options, license and game controls.\n"
 803                "  --usage             Display a brief message summarizing command-line options.\n"
 804                "  --version           Display the version of SuperTux you're running.\n\n"
 805                ));
 806           exit(0);
 807         }
 808       else if (argv[i][0] != '-')
 809         {
 810           level_startup_file = argv[i];
 811         }
 812       else
 813         {
 814           /* Unknown - complain! */
 815
 816           usage(argv[0], 1);
 817         }
 818     }
 819 }
 820
 821
 822 /* Display usage: */
 823
 824 void usage(char * prog, int ret)
 825 {
 826   FILE * fi;
 827
 828
 829   /* Determine which stream to write to: */
 830
 831   if (ret == 0)
 832     fi = stdout;
 833   else
 834     fi = stderr;
 835
 836
 837   /* Display the usage message: */
 838
 839   fprintf(fi, _("Usage: %s [--fullscreen] [--opengl] [--disable-sound] [--disable-music] [--debug] | [--usage | --help | --version] [--leveleditor] [--worldmap] FILENAME\n"),
 840           prog);
 841
 842
 843   /* Quit! */
 844
 845   exit(ret);
 846 }
 847
 848 std::vector<std::string> FileSystem::read_directory(const std::string& pathname)
 849 {
 850   std::vector<std::string> dirnames;
 851
 852   DIR* dir = opendir(pathname.c_str());
 853   if (dir)
 854     {
 855       struct dirent *direntp;
 856
 857       while((direntp = readdir(dir)))
 858         {
 859           dirnames.push_back(direntp->d_name);
 860         }
 861
 862       closedir(dir);
 863     }
 864
 865   return dirnames;
 866 }
 867
 868 /* EOF */