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 global images: */
 350   gold_text = new Font(datadir + "/images/fonts/gold.png", Font::TEXT, 16,18);
 351   blue_text = new Font(datadir + "/images/fonts/blue.png", Font::TEXT, 16,18,3);
 352   white_text  = new Font(datadir + "/images/fonts/white.png",
 353       Font::TEXT, 16,18);
 354   gray_text  = new Font(datadir + "/images/fonts/gray.png",
 355       Font::TEXT, 16,18);
 356   white_small_text = new Font(datadir + "/images/fonts/white-small.png",
 357           Font::TEXT, 8,9, 1);
 358   white_big_text   = new Font(datadir + "/images/fonts/white-big.png",
 359       Font::TEXT, 20,22, 3);
 360   yellow_nums = new Font(datadir + "/images/fonts/numbers.png",
 361       Font::NUM, 32,32);
 362
 363   /* Load GUI/menu images: */
 364   checkbox = new Surface(datadir + "/images/status/checkbox.png", true);
 365   checkbox_checked = new Surface(datadir + "/images/status/checkbox-checked.png", true);
 366   back = new Surface(datadir + "/images/status/back.png", true);
 367   arrow_left = new Surface(datadir + "/images/icons/left.png", true);
 368   arrow_right = new Surface(datadir + "/images/icons/right.png", true);
 369
 370   /* Load the mouse-cursor */
 371   mouse_cursor = new MouseCursor( datadir + "/images/status/mousecursor.png",1);
 372   MouseCursor::set_current(mouse_cursor);
 373
 374 }
 375
 376 void Setup::general_free(void)
 377 {
 378
 379   /* Free global images: */
 380   delete gold_text;
 381   delete white_text;
 382   delete blue_text;
 383   delete gray_text;
 384   delete white_small_text;
 385   delete white_big_text;
 386   delete yellow_nums;
 387
 388   /* Free GUI/menu images: */
 389   delete checkbox;
 390   delete checkbox_checked;
 391   delete back;
 392   delete arrow_left;
 393   delete arrow_right;
 394
 395   /* Free mouse-cursor */
 396   delete mouse_cursor;
 397
 398 }
 399
 400 void Setup::video(unsigned int screen_w, unsigned int screen_h)
 401 {
 402   /* Init SDL Video: */
 403   if (SDL_Init(SDL_INIT_VIDEO) < 0)
 404     {
 405       fprintf(stderr,
 406               "\nError: I could not initialize video!\n"
 407               "The Simple DirectMedia error that occured was:\n"
 408               "%s\n\n", SDL_GetError());
 409       exit(1);
 410     }
 411
 412   /* Open display: */
 413   if(use_gl)
 414     video_gl(screen_w, screen_h);
 415   else
 416     video_sdl(screen_w, screen_h);
 417
 418   Surface::reload_all();
 419
 420   /* Set window manager stuff: */
 421   SDL_WM_SetCaption((package_name + " " + package_version).c_str(), package_name.c_str());
 422 }
 423
 424 void Setup::video_sdl(unsigned int screen_w, unsigned int screen_h)
 425 {
 426   if (use_fullscreen)
 427     {
 428       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_FULLSCREEN ) ; /* | SDL_HWSURFACE); */
 429       if (screen == NULL)
 430         {
 431           fprintf(stderr,
 432                   "\nWarning: I could not set up fullscreen video for "
 433                   "800x600 mode.\n"
 434                   "The Simple DirectMedia error that occured was:\n"
 435                   "%s\n\n", SDL_GetError());
 436           use_fullscreen = false;
 437         }
 438     }
 439   else
 440     {
 441       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_HWSURFACE | SDL_DOUBLEBUF );
 442
 443       if (screen == NULL)
 444         {
 445           fprintf(stderr,
 446                   "\nError: I could not set up video for 800x600 mode.\n"
 447                   "The Simple DirectMedia error that occured was:\n"
 448                   "%s\n\n", SDL_GetError());
 449           exit(1);
 450         }
 451     }
 452 }
 453
 454 void Setup::video_gl(unsigned int screen_w, unsigned int screen_h)
 455 {
 456 #ifndef NOOPENGL
 457
 458   SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
 459   SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
 460   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
 461   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 462   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 463
 464   if (use_fullscreen)
 465     {
 466       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_FULLSCREEN | SDL_OPENGL) ; /* | SDL_HWSURFACE); */
 467       if (screen == NULL)
 468         {
 469           fprintf(stderr,
 470                   "\nWarning: I could not set up fullscreen video for "
 471                   "640x480 mode.\n"
 472                   "The Simple DirectMedia error that occured was:\n"
 473                   "%s\n\n", SDL_GetError());
 474           use_fullscreen = false;
 475         }
 476     }
 477   else
 478     {
 479       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_OPENGL);
 480
 481       if (screen == NULL)
 482         {
 483           fprintf(stderr,
 484                   "\nError: I could not set up video for 640x480 mode.\n"
 485                   "The Simple DirectMedia error that occured was:\n"
 486                   "%s\n\n", SDL_GetError());
 487           exit(1);
 488         }
 489     }
 490
 491   /*
 492    * Set up OpenGL for 2D rendering.
 493    */
 494   glDisable(GL_DEPTH_TEST);
 495   glDisable(GL_CULL_FACE);
 496
 497   glViewport(0, 0, screen->w, screen->h);
 498   glMatrixMode(GL_PROJECTION);
 499   glLoadIdentity();
 500   glOrtho(0, screen->w, screen->h, 0, -1.0, 1.0);
 501
 502   glMatrixMode(GL_MODELVIEW);
 503   glLoadIdentity();
 504   glTranslatef(0.0f, 0.0f, 0.0f);
 505
 506 #endif
 507
 508 }
 509
 510 void Setup::joystick(void)
 511 {
 512
 513   /* Init Joystick: */
 514
 515   use_joystick = true;
 516
 517   if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
 518     {
 519       fprintf(stderr, "Warning: I could not initialize joystick!\n"
 520               "The Simple DirectMedia error that occured was:\n"
 521               "%s\n\n", SDL_GetError());
 522
 523       use_joystick = false;
 524     }
 525   else
 526     {
 527       /* Open joystick: */
 528       if (SDL_NumJoysticks() <= 0)
 529         {
 530           fprintf(stderr, "Info: No joysticks were found.\n");
 531
 532           use_joystick = false;
 533         }
 534       else
 535         {
 536           js = SDL_JoystickOpen(joystick_num);
 537
 538           if (js == NULL)
 539             {
 540               fprintf(stderr, "Warning: Could not open joystick %d.\n"
 541                       "The Simple DirectMedia error that occured was:\n"
 542                       "%s\n\n", joystick_num, SDL_GetError());
 543
 544               use_joystick = false;
 545             }
 546           else
 547             {
 548               if (SDL_JoystickNumAxes(js) < 2)
 549                 {
 550                   fprintf(stderr,
 551                           "Warning: Joystick does not have enough axes!\n");
 552
 553                   use_joystick = false;
 554                 }
 555               else
 556                 {
 557                   if (SDL_JoystickNumButtons(js) < 2)
 558                     {
 559                       fprintf(stderr,
 560                               "Warning: "
 561                               "Joystick does not have enough buttons!\n");
 562
 563                       use_joystick = false;
 564                     }
 565                 }
 566             }
 567         }
 568     }
 569 }
 570
 571 void Setup::audio(void)
 572 {
 573
 574   /* Init SDL Audio silently even if --disable-sound : */
 575
 576   if (SoundManager::get()->audio_device_available())
 577     {
 578       if (SDL_Init(SDL_INIT_AUDIO) < 0)
 579         {
 580           /* only print out message if sound or music
 581              was not disabled at command-line
 582            */
 583           if (SoundManager::get()->sound_enabled() || SoundManager::get()->music_enabled())
 584             {
 585               fprintf(stderr,
 586                       "\nWarning: I could not initialize audio!\n"
 587                       "The Simple DirectMedia error that occured was:\n"
 588                       "%s\n\n", SDL_GetError());
 589             }
 590           /* keep the programming logic the same :-)
 591              because in this case, use_sound & use_music' values are ignored
 592              when there's no available audio device
 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   /* Open sound silently regarless the value of "use_sound": */
 602
 603   if (SoundManager::get()->audio_device_available())
 604     {
 605       if (SoundManager::get()->open_audio(44100, AUDIO_S16, 2, 2048) < 0)
 606         {
 607           /* only print out message if sound or music
 608              was not disabled at command-line
 609            */
 610           if (SoundManager::get()->sound_enabled() || SoundManager::get()->music_enabled())
 611             {
 612               fprintf(stderr,
 613                       "\nWarning: I could not set up audio for 44100 Hz "
 614                       "16-bit stereo.\n"
 615                       "The Simple DirectMedia error that occured was:\n"
 616                       "%s\n\n", SDL_GetError());
 617             }
 618           SoundManager::get()->enable_sound(false);
 619           SoundManager::get()->enable_music(false);
 620           SoundManager::get()->set_audio_device_available(false);
 621         }
 622     }
 623
 624 }
 625
 626
 627 /* --- SHUTDOWN --- */
 628
 629 void Termination::shutdown(void)
 630 {
 631   SoundManager::get()->close_audio();
 632   SDL_Quit();
 633   config->save();
 634 }
 635
 636 /* --- ABORT! --- */
 637
 638 void Termination::abort(const std::string& reason, const std::string& details)
 639 {
 640   fprintf(stderr, "\nError: %s\n%s\n\n", reason.c_str(), details.c_str());
 641   shutdown();
 642   ::abort();
 643 }
 644
 645 /* Set Icon (private) */
 646
 647 void seticon(void)
 648 {
 649 //  int masklen;
 650 //  Uint8 * mask;
 651   SDL_Surface * icon;
 652
 653
 654   /* Load icon into a surface: */
 655
 656   icon = IMG_Load((datadir + "/images/" + package_symbol_name + ".xpm").c_str());
 657   if (icon == NULL)
 658     {
 659       fprintf(stderr,
 660               "\nError: I could not load the icon image: %s%s\n"
 661               "The Simple DirectMedia error that occured was:\n"
 662               "%s\n\n", datadir.c_str(), ("/images/" + package_symbol_name + ".xpm").c_str(), SDL_GetError());
 663       exit(1);
 664     }
 665
 666
 667   /* Create mask: */
 668 /*
 669   masklen = (((icon -> w) + 7) / 8) * (icon -> h);
 670   mask = (Uint8*) malloc(masklen * sizeof(Uint8));
 671   memset(mask, 0xFF, masklen);
 672 */
 673
 674   /* Set icon: */
 675
 676   SDL_WM_SetIcon(icon, NULL);//mask);
 677
 678
 679   /* Free icon surface & mask: */
 680
 681 //  free(mask);
 682   SDL_FreeSurface(icon);
 683 }
 684
 685
 686 /* Parse command-line arguments: */
 687
 688 void Setup::parseargs(int argc, char * argv[])
 689 {
 690   int i;
 691
 692   config->load();
 693
 694   /* Parse arguments: */
 695
 696   for (i = 1; i < argc; i++)
 697     {
 698       if (strcmp(argv[i], "--fullscreen") == 0 ||
 699           strcmp(argv[i], "-f") == 0)
 700         {
 701           use_fullscreen = true;
 702         }
 703       else if (strcmp(argv[i], "--window") == 0 ||
 704                strcmp(argv[i], "-w") == 0)
 705         {
 706           use_fullscreen = false;
 707         }
 708       else if (strcmp(argv[i], "--joystick") == 0 || strcmp(argv[i], "-j") == 0)
 709         {
 710           assert(i+1 < argc);
 711           joystick_num = atoi(argv[++i]);
 712         }
 713       else if (strcmp(argv[i], "--joymap") == 0)
 714         {
 715           assert(i+1 < argc);
 716           if (sscanf(argv[++i],
 717                      "%d:%d:%d:%d:%d",
 718                      &joystick_keymap.x_axis,
 719                      &joystick_keymap.y_axis,
 720                      &joystick_keymap.a_button,
 721                      &joystick_keymap.b_button,
 722                      &joystick_keymap.start_button) != 5)
 723             {
 724               puts("Warning: Invalid or incomplete joymap, should be: 'XAXIS:YAXIS:A:B:START'");
 725             }
 726           else
 727             {
 728               std::cout << "Using new joymap:\n"
 729                         << "  X-Axis:       " << joystick_keymap.x_axis << "\n"
 730                         << "  Y-Axis:       " << joystick_keymap.y_axis << "\n"
 731                         << "  A-Button:     " << joystick_keymap.a_button << "\n"
 732                         << "  B-Button:     " << joystick_keymap.b_button << "\n"
 733                         << "  Start-Button: " << joystick_keymap.start_button << std::endl;
 734             }
 735         }
 736       else if (strcmp(argv[i], "--leveleditor") == 0)
 737         {
 738           launch_leveleditor_mode = true;
 739         }
 740       else if (strcmp(argv[i], "--worldmap") == 0)
 741         {
 742           launch_worldmap_mode = true;
 743         }
 744       else if (strcmp(argv[i], "--datadir") == 0
 745                || strcmp(argv[i], "-d") == 0 )
 746         {
 747           assert(i+1 < argc);
 748           datadir = argv[++i];
 749         }
 750       else if (strcmp(argv[i], "--show-fps") == 0)
 751         {
 752           /* Use full screen: */
 753
 754           show_fps = true;
 755         }
 756       else if (strcmp(argv[i], "--opengl") == 0 ||
 757                strcmp(argv[i], "-gl") == 0)
 758         {
 759 #ifndef NOOPENGL
 760           /* Use OpengGL: */
 761
 762           use_gl = true;
 763 #endif
 764         }
 765       else if (strcmp(argv[i], "--sdl") == 0)
 766           {
 767             use_gl = false;
 768           }
 769       else if (strcmp(argv[i], "--usage") == 0)
 770         {
 771           /* Show usage: */
 772
 773           usage(argv[0], 0);
 774         }
 775       else if (strcmp(argv[i], "--version") == 0)
 776         {
 777           /* Show version: */
 778           printf((package_name + package_version + "\n").c_str() );
 779           exit(0);
 780         }
 781       else if (strcmp(argv[i], "--disable-sound") == 0)
 782         {
 783           /* Disable the compiled in sound feature */
 784           printf("Sounds disabled \n");
 785           SoundManager::get()->enable_sound(false);
 786         }
 787       else if (strcmp(argv[i], "--disable-music") == 0)
 788         {
 789           /* Disable the compiled in sound feature */
 790           printf("Music disabled \n");
 791           SoundManager::get()->enable_music(false);
 792         }
 793       else if (strcmp(argv[i], "--debug") == 0)
 794         {
 795           /* Enable the debug-mode */
 796           debug_mode = true;
 797
 798         }
 799       else if (strcmp(argv[i], "--help") == 0)
 800         {     /* Show help: */
 801           puts(_("  SuperTux  " VERSION "\n"
 802                "  Please see the file \"README.txt\" for more details.\n"));
 803           printf(_("Usage: %s [OPTIONS] FILENAME\n\n"), argv[0]);
 804           puts(_("Display Options:\n"
 805                "  -f, --fullscreen    Run in fullscreen mode.\n"
 806                "  -w, --window        Run in window mode.\n"
 807                "  --opengl            If OpenGL support was compiled in, this will tell\n"
 808                "                      SuperTux to make use of it.\n"
 809                "  --sdl               Use the SDL software graphical renderer\n"
 810                "\n"
 811                "Sound Options:\n"
 812                "  --disable-sound     If sound support was compiled in,  this will\n"
 813                "                      disable sound for this session of the game.\n"
 814                "  --disable-music     Like above, but this will disable music.\n"
 815                "\n"
 816                "Misc Options:\n"
 817                "  -j, --joystick NUM  Use joystick NUM (default: 0)\n"
 818                "  --joymap XAXIS:YAXIS:A:B:START\n"
 819                "                      Define how joystick buttons and axis should be mapped\n"
 820                "  --leveleditor       Opens the leveleditor in a file.\n"
 821                "  --worldmap          Opens the specified worldmap file.\n"
 822                "  -d, --datadir DIR   Load Game data from DIR (default: automatic)\n"
 823                "  --debug             Enables the debug mode, which is useful for developers.\n"
 824                "  --help              Display a help message summarizing command-line\n"
 825                "                      options, license and game controls.\n"
 826                "  --usage             Display a brief message summarizing command-line options.\n"
 827                "  --version           Display the version of SuperTux you're running.\n\n"
 828                ));
 829           exit(0);
 830         }
 831       else if (argv[i][0] != '-')
 832         {
 833           level_startup_file = argv[i];
 834         }
 835       else
 836         {
 837           /* Unknown - complain! */
 838
 839           usage(argv[0], 1);
 840         }
 841     }
 842 }
 843
 844
 845 /* Display usage: */
 846
 847 void usage(char * prog, int ret)
 848 {
 849   FILE * fi;
 850
 851
 852   /* Determine which stream to write to: */
 853
 854   if (ret == 0)
 855     fi = stdout;
 856   else
 857     fi = stderr;
 858
 859
 860   /* Display the usage message: */
 861
 862   fprintf(fi, _("Usage: %s [--fullscreen] [--opengl] [--disable-sound] [--disable-music] [--debug] | [--usage | --help | --version] [--leveleditor] [--worldmap] FILENAME\n"),
 863           prog);
 864
 865
 866   /* Quit! */
 867
 868   exit(ret);
 869 }
 870
 871 std::vector<std::string> FileSystem::read_directory(const std::string& pathname)
 872 {
 873   std::vector<std::string> dirnames;
 874
 875   DIR* dir = opendir(pathname.c_str());
 876   if (dir)
 877     {
 878       struct dirent *direntp;
 879
 880       while((direntp = readdir(dir)))
 881         {
 882           dirnames.push_back(direntp->d_name);
 883         }
 884
 885       closedir(dir);
 886     }
 887
 888   return dirnames;
 889 }
 890
 891 /* EOF */