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 SuperTux::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 SuperTux::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 SuperTux::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 FILE * SuperTux::opendata(const char * rel_filename, const char * mode)
 121 {
 122   char * filename = NULL;
 123   FILE * fi;
 124
 125   filename = (char *) malloc(sizeof(char) * (strlen(st_dir) +
 126                                              strlen(rel_filename) + 1));
 127
 128   strcpy(filename, st_dir);
 129   /* Open the high score file: */
 130
 131   strcat(filename, rel_filename);
 132
 133   /* Try opening the file: */
 134   fi = fopen(filename, mode);
 135
 136   if (fi == NULL)
 137     {
 138       fprintf(stderr, "Warning: Unable to open the file \"%s\" ", filename);
 139
 140       if (strcmp(mode, "r") == 0)
 141         fprintf(stderr, "for read!!!\n");
 142       else if (strcmp(mode, "w") == 0)
 143         fprintf(stderr, "for write!!!\n");
 144     }
 145   free( filename );
 146
 147   return(fi);
 148 }
 149
 150 /* Get all names of sub-directories in a certain directory. */
 151 /* Returns the number of sub-directories found. */
 152 /* Note: The user has to free the allocated space. */
 153 string_list_type SuperTux::dsubdirs(const char *rel_path,const  char* expected_file)
 154 {
 155   DIR *dirStructP;
 156   struct dirent *direntp;
 157   string_list_type sdirs;
 158   char filename[1024];
 159   char path[1024];
 160
 161   string_list_init(&sdirs);
 162   sprintf(path,"%s/%s",st_dir,rel_path);
 163   if((dirStructP = opendir(path)) != NULL)
 164     {
 165       while((direntp = readdir(dirStructP)) != NULL)
 166         {
 167           char absolute_filename[1024];
 168           struct stat buf;
 169
 170           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 171
 172           if (stat(absolute_filename, &buf) == 0 && S_ISDIR(buf.st_mode))
 173             {
 174               if(expected_file != NULL)
 175                 {
 176                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 177                   if(!faccessible(filename))
 178                     continue;
 179                 }
 180
 181               string_list_add_item(&sdirs,direntp->d_name);
 182             }
 183         }
 184       closedir(dirStructP);
 185     }
 186
 187   sprintf(path,"%s/%s",datadir.c_str(),rel_path);
 188   if((dirStructP = opendir(path)) != NULL)
 189     {
 190       while((direntp = readdir(dirStructP)) != NULL)
 191         {
 192           char absolute_filename[1024];
 193           struct stat buf;
 194
 195           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 196
 197           if (stat(absolute_filename, &buf) == 0 && S_ISDIR(buf.st_mode))
 198             {
 199               if(expected_file != NULL)
 200                 {
 201                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 202                   if(!faccessible(filename))
 203                     {
 204                       continue;
 205                     }
 206                   else
 207                     {
 208                       sprintf(filename,"%s/%s/%s/%s",st_dir,rel_path,direntp->d_name,expected_file);
 209                       if(faccessible(filename))
 210                         continue;
 211                     }
 212                 }
 213
 214               string_list_add_item(&sdirs,direntp->d_name);
 215             }
 216         }
 217       closedir(dirStructP);
 218     }
 219
 220   return sdirs;
 221 }
 222
 223 string_list_type SuperTux::dfiles(const char *rel_path, const  char* glob, const  char* exception_str)
 224 {
 225   DIR *dirStructP;
 226   struct dirent *direntp;
 227   string_list_type sdirs;
 228   char path[1024];
 229
 230   string_list_init(&sdirs);
 231   sprintf(path,"%s/%s",st_dir,rel_path);
 232   if((dirStructP = opendir(path)) != NULL)
 233     {
 234       while((direntp = readdir(dirStructP)) != NULL)
 235         {
 236           char absolute_filename[1024];
 237           struct stat buf;
 238
 239           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 240
 241           if (stat(absolute_filename, &buf) == 0 && S_ISREG(buf.st_mode))
 242             {
 243               if(exception_str != NULL)
 244                 {
 245                   if(strstr(direntp->d_name,exception_str) != NULL)
 246                     continue;
 247                 }
 248               if(glob != NULL)
 249                 if(strstr(direntp->d_name,glob) == NULL)
 250                   continue;
 251
 252               string_list_add_item(&sdirs,direntp->d_name);
 253             }
 254         }
 255       closedir(dirStructP);
 256     }
 257
 258   sprintf(path,"%s/%s",datadir.c_str(),rel_path);
 259   if((dirStructP = opendir(path)) != NULL)
 260     {
 261       while((direntp = readdir(dirStructP)) != NULL)
 262         {
 263           char absolute_filename[1024];
 264           struct stat buf;
 265
 266           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 267
 268           if (stat(absolute_filename, &buf) == 0 && S_ISREG(buf.st_mode))
 269             {
 270               if(exception_str != NULL)
 271                 {
 272                   if(strstr(direntp->d_name,exception_str) != NULL)
 273                     continue;
 274                 }
 275               if(glob != NULL)
 276                 if(strstr(direntp->d_name,glob) == NULL)
 277                   continue;
 278
 279               string_list_add_item(&sdirs,direntp->d_name);
 280             }
 281         }
 282       closedir(dirStructP);
 283     }
 284
 285   return sdirs;
 286 }
 287
 288 void SuperTux::free_strings(char **strings, int num)
 289 {
 290   int i;
 291   for(i=0; i < num; ++i)
 292     free(strings[i]);
 293 }
 294
 295 void SuperTux::st_info_setup(const std::string& _package_name, const std::string& _package_symbol_name, const std::string& _package_version)
 296 {
 297 package_name = _package_name;
 298 package_symbol_name = _package_symbol_name;
 299 package_version = _package_version;
 300 }
 301
 302 /* --- SETUP --- */
 303 /* Set SuperTux configuration and save directories */
 304 void SuperTux::st_directory_setup(void)
 305 {
 306   char *home;
 307   char str[1024];
 308   /* Get home directory (from $HOME variable)... if we can't determine it,
 309      use the current directory ("."): */
 310   if (getenv("HOME") != NULL)
 311     home = getenv("HOME");
 312   else
 313     home = ".";
 314
 315   std::string st_dir_tmp = "/." + package_symbol_name;
 316   st_dir = (char *) malloc(sizeof(char) * (strlen(home) +
 317                                            strlen(st_dir_tmp.c_str()) + 1));
 318   strcpy(st_dir, home);
 319   strcat(st_dir,st_dir_tmp.c_str());
 320
 321   /* Remove .supertux config-file from old SuperTux versions */
 322   if(faccessible(st_dir))
 323     {
 324       remove
 325         (st_dir);
 326     }
 327
 328   st_save_dir = (char *) malloc(sizeof(char) * (strlen(st_dir) + strlen("/save") + 1));
 329
 330   strcpy(st_save_dir,st_dir);
 331   strcat(st_save_dir,"/save");
 332
 333   /* Create them. In the case they exist they won't destroy anything. */
 334   mkdir(st_dir, 0755);
 335   mkdir(st_save_dir, 0755);
 336
 337   sprintf(str, "%s/levels", st_dir);
 338   mkdir(str, 0755);
 339
 340   // User has not that a datadir, so we try some magic
 341   if (datadir.empty())
 342     {
 343 #ifndef WIN32
 344       // Detect datadir
 345       char exe_file[PATH_MAX];
 346       if (readlink("/proc/self/exe", exe_file, PATH_MAX) < 0)
 347         {
 348           puts("Couldn't read /proc/self/exe, using default path: " DATA_PREFIX);
 349           datadir = DATA_PREFIX;
 350         }
 351       else
 352         {
 353           std::string exedir = std::string(dirname(exe_file)) + "/";
 354
 355           datadir = exedir + "../data"; // SuperTux run from source dir
 356           if (access(datadir.c_str(), F_OK) != 0)
 357             {
 358               datadir = exedir + "../share/" + package_symbol_name; // SuperTux run from PATH
 359               if (access(datadir.c_str(), F_OK) != 0)
 360                 { // If all fails, fall back to compiled path
 361                   datadir = DATA_PREFIX;
 362                 }
 363             }
 364         }
 365 #else
 366   datadir = DATA_PREFIX;
 367 #endif
 368     }
 369   printf("Datadir: %s\n", datadir.c_str());
 370 }
 371
 372 void SuperTux::st_general_setup(void)
 373 {
 374   /* Seed random number generator: */
 375
 376   srand(SDL_GetTicks());
 377
 378   /* Set icon image: */
 379
 380   seticon();
 381
 382   /* Unicode needed for input handling: */
 383
 384   SDL_EnableUNICODE(1);
 385
 386   /* Load global images: */
 387   gold_text = new Font(datadir + "/images/fonts/gold.png", Font::TEXT, 16,18);
 388   blue_text = new Font(datadir + "/images/fonts/blue.png", Font::TEXT, 16,18,3);
 389   white_text  = new Font(datadir + "/images/fonts/white.png",
 390       Font::TEXT, 16,18);
 391   gray_text  = new Font(datadir + "/images/fonts/gray.png",
 392       Font::TEXT, 16,18);
 393   white_small_text = new Font(datadir + "/images/fonts/white-small.png",
 394           Font::TEXT, 8,9, 1);
 395   white_big_text   = new Font(datadir + "/images/fonts/white-big.png",
 396       Font::TEXT, 20,22, 3);
 397   yellow_nums = new Font(datadir + "/images/fonts/numbers.png",
 398       Font::NUM, 32,32);
 399
 400   /* Load GUI/menu images: */
 401   checkbox = new Surface(datadir + "/images/status/checkbox.png", true);
 402   checkbox_checked = new Surface(datadir + "/images/status/checkbox-checked.png", true);
 403   back = new Surface(datadir + "/images/status/back.png", true);
 404   arrow_left = new Surface(datadir + "/images/icons/left.png", true);
 405   arrow_right = new Surface(datadir + "/images/icons/right.png", true);
 406
 407   /* Load the mouse-cursor */
 408   mouse_cursor = new MouseCursor( datadir + "/images/status/mousecursor.png",1);
 409   MouseCursor::set_current(mouse_cursor);
 410
 411 }
 412
 413 void SuperTux::st_general_free(void)
 414 {
 415
 416   /* Free global images: */
 417   delete gold_text;
 418   delete white_text;
 419   delete blue_text;
 420   delete gray_text;
 421   delete white_small_text;
 422   delete white_big_text;
 423   delete yellow_nums;
 424
 425   /* Free GUI/menu images: */
 426   delete checkbox;
 427   delete checkbox_checked;
 428   delete back;
 429   delete arrow_left;
 430   delete arrow_right;
 431
 432   /* Free mouse-cursor */
 433   delete mouse_cursor;
 434
 435 }
 436
 437 void SuperTux::st_video_setup(unsigned int screen_w, unsigned int screen_h)
 438 {
 439   /* Init SDL Video: */
 440   if (SDL_Init(SDL_INIT_VIDEO) < 0)
 441     {
 442       fprintf(stderr,
 443               "\nError: I could not initialize video!\n"
 444               "The Simple DirectMedia error that occured was:\n"
 445               "%s\n\n", SDL_GetError());
 446       exit(1);
 447     }
 448
 449   /* Open display: */
 450   if(use_gl)
 451     st_video_setup_gl(screen_w, screen_h);
 452   else
 453     st_video_setup_sdl(screen_w, screen_h);
 454
 455   Surface::reload_all();
 456
 457   /* Set window manager stuff: */
 458   SDL_WM_SetCaption((package_name + " " + package_version).c_str(), package_name.c_str());
 459 }
 460
 461 void SuperTux::st_video_setup_sdl(unsigned int screen_w, unsigned int screen_h)
 462 {
 463   if (use_fullscreen)
 464     {
 465       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_FULLSCREEN ) ; /* | SDL_HWSURFACE); */
 466       if (screen == NULL)
 467         {
 468           fprintf(stderr,
 469                   "\nWarning: I could not set up fullscreen video for "
 470                   "800x600 mode.\n"
 471                   "The Simple DirectMedia error that occured was:\n"
 472                   "%s\n\n", SDL_GetError());
 473           use_fullscreen = false;
 474         }
 475     }
 476   else
 477     {
 478       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_HWSURFACE | SDL_DOUBLEBUF );
 479
 480       if (screen == NULL)
 481         {
 482           fprintf(stderr,
 483                   "\nError: I could not set up video for 800x600 mode.\n"
 484                   "The Simple DirectMedia error that occured was:\n"
 485                   "%s\n\n", SDL_GetError());
 486           exit(1);
 487         }
 488     }
 489 }
 490
 491 void SuperTux::st_video_setup_gl(unsigned int screen_w, unsigned int screen_h)
 492 {
 493 #ifndef NOOPENGL
 494
 495   SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
 496   SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
 497   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
 498   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 499   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 500
 501   if (use_fullscreen)
 502     {
 503       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_FULLSCREEN | SDL_OPENGL) ; /* | SDL_HWSURFACE); */
 504       if (screen == NULL)
 505         {
 506           fprintf(stderr,
 507                   "\nWarning: I could not set up fullscreen video for "
 508                   "640x480 mode.\n"
 509                   "The Simple DirectMedia error that occured was:\n"
 510                   "%s\n\n", SDL_GetError());
 511           use_fullscreen = false;
 512         }
 513     }
 514   else
 515     {
 516       screen = SDL_SetVideoMode(screen_w, screen_h, 0, SDL_OPENGL);
 517
 518       if (screen == NULL)
 519         {
 520           fprintf(stderr,
 521                   "\nError: I could not set up video for 640x480 mode.\n"
 522                   "The Simple DirectMedia error that occured was:\n"
 523                   "%s\n\n", SDL_GetError());
 524           exit(1);
 525         }
 526     }
 527
 528   /*
 529    * Set up OpenGL for 2D rendering.
 530    */
 531   glDisable(GL_DEPTH_TEST);
 532   glDisable(GL_CULL_FACE);
 533
 534   glViewport(0, 0, screen->w, screen->h);
 535   glMatrixMode(GL_PROJECTION);
 536   glLoadIdentity();
 537   glOrtho(0, screen->w, screen->h, 0, -1.0, 1.0);
 538
 539   glMatrixMode(GL_MODELVIEW);
 540   glLoadIdentity();
 541   glTranslatef(0.0f, 0.0f, 0.0f);
 542
 543 #endif
 544
 545 }
 546
 547 void SuperTux::st_joystick_setup(void)
 548 {
 549
 550   /* Init Joystick: */
 551
 552   use_joystick = true;
 553
 554   if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
 555     {
 556       fprintf(stderr, "Warning: I could not initialize joystick!\n"
 557               "The Simple DirectMedia error that occured was:\n"
 558               "%s\n\n", SDL_GetError());
 559
 560       use_joystick = false;
 561     }
 562   else
 563     {
 564       /* Open joystick: */
 565       if (SDL_NumJoysticks() <= 0)
 566         {
 567           fprintf(stderr, "Info: No joysticks were found.\n");
 568
 569           use_joystick = false;
 570         }
 571       else
 572         {
 573           js = SDL_JoystickOpen(joystick_num);
 574
 575           if (js == NULL)
 576             {
 577               fprintf(stderr, "Warning: Could not open joystick %d.\n"
 578                       "The Simple DirectMedia error that occured was:\n"
 579                       "%s\n\n", joystick_num, SDL_GetError());
 580
 581               use_joystick = false;
 582             }
 583           else
 584             {
 585               if (SDL_JoystickNumAxes(js) < 2)
 586                 {
 587                   fprintf(stderr,
 588                           "Warning: Joystick does not have enough axes!\n");
 589
 590                   use_joystick = false;
 591                 }
 592               else
 593                 {
 594                   if (SDL_JoystickNumButtons(js) < 2)
 595                     {
 596                       fprintf(stderr,
 597                               "Warning: "
 598                               "Joystick does not have enough buttons!\n");
 599
 600                       use_joystick = false;
 601                     }
 602                 }
 603             }
 604         }
 605     }
 606 }
 607
 608 void SuperTux::st_audio_setup(void)
 609 {
 610
 611   /* Init SDL Audio silently even if --disable-sound : */
 612
 613   if (audio_device)
 614     {
 615       if (SDL_Init(SDL_INIT_AUDIO) < 0)
 616         {
 617           /* only print out message if sound or music
 618              was not disabled at command-line
 619            */
 620           if (use_sound || use_music)
 621             {
 622               fprintf(stderr,
 623                       "\nWarning: I could not initialize audio!\n"
 624                       "The Simple DirectMedia error that occured was:\n"
 625                       "%s\n\n", SDL_GetError());
 626             }
 627           /* keep the programming logic the same :-)
 628              because in this case, use_sound & use_music' values are ignored
 629              when there's no available audio device
 630           */
 631           use_sound = false;
 632           use_music = false;
 633           audio_device = false;
 634         }
 635     }
 636
 637
 638   /* Open sound silently regarless the value of "use_sound": */
 639
 640   if (audio_device)
 641     {
 642       if (open_audio(44100, AUDIO_S16, 2, 2048) < 0)
 643         {
 644           /* only print out message if sound or music
 645              was not disabled at command-line
 646            */
 647           if (use_sound || use_music)
 648             {
 649               fprintf(stderr,
 650                       "\nWarning: I could not set up audio for 44100 Hz "
 651                       "16-bit stereo.\n"
 652                       "The Simple DirectMedia error that occured was:\n"
 653                       "%s\n\n", SDL_GetError());
 654             }
 655           use_sound = false;
 656           use_music = false;
 657           audio_device = false;
 658         }
 659     }
 660
 661 }
 662
 663
 664 /* --- SHUTDOWN --- */
 665
 666 void SuperTux::st_shutdown(void)
 667 {
 668   close_audio();
 669   SDL_Quit();
 670   config->save();
 671 }
 672
 673 /* --- ABORT! --- */
 674
 675 void SuperTux::st_abort(const std::string& reason, const std::string& details)
 676 {
 677   fprintf(stderr, "\nError: %s\n%s\n\n", reason.c_str(), details.c_str());
 678   st_shutdown();
 679   abort();
 680 }
 681
 682 /* Set Icon (private) */
 683
 684 void seticon(void)
 685 {
 686 //  int masklen;
 687 //  Uint8 * mask;
 688   SDL_Surface * icon;
 689
 690
 691   /* Load icon into a surface: */
 692
 693   icon = IMG_Load((datadir + "/images/" + package_symbol_name + ".xpm").c_str());
 694   if (icon == NULL)
 695     {
 696       fprintf(stderr,
 697               "\nError: I could not load the icon image: %s%s\n"
 698               "The Simple DirectMedia error that occured was:\n"
 699               "%s\n\n", datadir.c_str(), ("/images/" + package_symbol_name + ".xpm").c_str(), SDL_GetError());
 700       exit(1);
 701     }
 702
 703
 704   /* Create mask: */
 705 /*
 706   masklen = (((icon -> w) + 7) / 8) * (icon -> h);
 707   mask = (Uint8*) malloc(masklen * sizeof(Uint8));
 708   memset(mask, 0xFF, masklen);
 709 */
 710
 711   /* Set icon: */
 712
 713   SDL_WM_SetIcon(icon, NULL);//mask);
 714
 715
 716   /* Free icon surface & mask: */
 717
 718 //  free(mask);
 719   SDL_FreeSurface(icon);
 720 }
 721
 722
 723 /* Parse command-line arguments: */
 724
 725 void SuperTux::parseargs(int argc, char * argv[])
 726 {
 727   int i;
 728
 729   config->load();
 730
 731   /* Parse arguments: */
 732
 733   for (i = 1; i < argc; i++)
 734     {
 735       if (strcmp(argv[i], "--fullscreen") == 0 ||
 736           strcmp(argv[i], "-f") == 0)
 737         {
 738           use_fullscreen = true;
 739         }
 740       else if (strcmp(argv[i], "--window") == 0 ||
 741                strcmp(argv[i], "-w") == 0)
 742         {
 743           use_fullscreen = false;
 744         }
 745       else if (strcmp(argv[i], "--joystick") == 0 || strcmp(argv[i], "-j") == 0)
 746         {
 747           assert(i+1 < argc);
 748           joystick_num = atoi(argv[++i]);
 749         }
 750       else if (strcmp(argv[i], "--joymap") == 0)
 751         {
 752           assert(i+1 < argc);
 753           if (sscanf(argv[++i],
 754                      "%d:%d:%d:%d:%d",
 755                      &joystick_keymap.x_axis,
 756                      &joystick_keymap.y_axis,
 757                      &joystick_keymap.a_button,
 758                      &joystick_keymap.b_button,
 759                      &joystick_keymap.start_button) != 5)
 760             {
 761               puts("Warning: Invalid or incomplete joymap, should be: 'XAXIS:YAXIS:A:B:START'");
 762             }
 763           else
 764             {
 765               std::cout << "Using new joymap:\n"
 766                         << "  X-Axis:       " << joystick_keymap.x_axis << "\n"
 767                         << "  Y-Axis:       " << joystick_keymap.y_axis << "\n"
 768                         << "  A-Button:     " << joystick_keymap.a_button << "\n"
 769                         << "  B-Button:     " << joystick_keymap.b_button << "\n"
 770                         << "  Start-Button: " << joystick_keymap.start_button << std::endl;
 771             }
 772         }
 773       else if (strcmp(argv[i], "--leveleditor") == 0)
 774         {
 775           launch_leveleditor_mode = true;
 776         }
 777       else if (strcmp(argv[i], "--worldmap") == 0)
 778         {
 779           launch_worldmap_mode = true;
 780         }
 781       else if (strcmp(argv[i], "--datadir") == 0
 782                || strcmp(argv[i], "-d") == 0 )
 783         {
 784           assert(i+1 < argc);
 785           datadir = argv[++i];
 786         }
 787       else if (strcmp(argv[i], "--show-fps") == 0)
 788         {
 789           /* Use full screen: */
 790
 791           show_fps = true;
 792         }
 793       else if (strcmp(argv[i], "--opengl") == 0 ||
 794                strcmp(argv[i], "-gl") == 0)
 795         {
 796 #ifndef NOOPENGL
 797           /* Use OpengGL: */
 798
 799           use_gl = true;
 800 #endif
 801         }
 802       else if (strcmp(argv[i], "--sdl") == 0)
 803           {
 804             use_gl = false;
 805           }
 806       else if (strcmp(argv[i], "--usage") == 0)
 807         {
 808           /* Show usage: */
 809
 810           usage(argv[0], 0);
 811         }
 812       else if (strcmp(argv[i], "--version") == 0)
 813         {
 814           /* Show version: */
 815           printf((package_name + package_version + "\n").c_str() );
 816           exit(0);
 817         }
 818       else if (strcmp(argv[i], "--disable-sound") == 0)
 819         {
 820           /* Disable the compiled in sound feature */
 821           printf("Sounds disabled \n");
 822           use_sound = false;
 823           audio_device = false;
 824         }
 825       else if (strcmp(argv[i], "--disable-music") == 0)
 826         {
 827           /* Disable the compiled in sound feature */
 828           printf("Music disabled \n");
 829           use_music = false;
 830         }
 831       else if (strcmp(argv[i], "--debug") == 0)
 832         {
 833           /* Enable the debug-mode */
 834           debug_mode = true;
 835
 836         }
 837       else if (strcmp(argv[i], "--help") == 0)
 838         {     /* Show help: */
 839           puts(_("  SuperTux  " VERSION "\n"
 840                "  Please see the file \"README.txt\" for more details.\n"));
 841           printf(_("Usage: %s [OPTIONS] FILENAME\n\n"), argv[0]);
 842           puts(_("Display Options:\n"
 843                "  -f, --fullscreen    Run in fullscreen mode.\n"
 844                "  -w, --window        Run in window mode.\n"
 845                "  --opengl            If OpenGL support was compiled in, this will tell\n"
 846                "                      SuperTux to make use of it.\n"
 847                "  --sdl               Use the SDL software graphical renderer\n"
 848                "\n"
 849                "Sound Options:\n"
 850                "  --disable-sound     If sound support was compiled in,  this will\n"
 851                "                      disable sound for this session of the game.\n"
 852                "  --disable-music     Like above, but this will disable music.\n"
 853                "\n"
 854                "Misc Options:\n"
 855                "  -j, --joystick NUM  Use joystick NUM (default: 0)\n"
 856                "  --joymap XAXIS:YAXIS:A:B:START\n"
 857                "                      Define how joystick buttons and axis should be mapped\n"
 858                "  --leveleditor       Opens the leveleditor in a file.\n"
 859                "  --worldmap          Opens the specified worldmap file.\n"
 860                "  -d, --datadir DIR   Load Game data from DIR (default: automatic)\n"
 861                "  --debug             Enables the debug mode, which is useful for developers.\n"
 862                "  --help              Display a help message summarizing command-line\n"
 863                "                      options, license and game controls.\n"
 864                "  --usage             Display a brief message summarizing command-line options.\n"
 865                "  --version           Display the version of SuperTux you're running.\n\n"
 866                ));
 867           exit(0);
 868         }
 869       else if (argv[i][0] != '-')
 870         {
 871           level_startup_file = argv[i];
 872         }
 873       else
 874         {
 875           /* Unknown - complain! */
 876
 877           usage(argv[0], 1);
 878         }
 879     }
 880 }
 881
 882
 883 /* Display usage: */
 884
 885 void usage(char * prog, int ret)
 886 {
 887   FILE * fi;
 888
 889
 890   /* Determine which stream to write to: */
 891
 892   if (ret == 0)
 893     fi = stdout;
 894   else
 895     fi = stderr;
 896
 897
 898   /* Display the usage message: */
 899
 900   fprintf(fi, _("Usage: %s [--fullscreen] [--opengl] [--disable-sound] [--disable-music] [--debug] | [--usage | --help | --version] [--leveleditor] [--worldmap] FILENAME\n"),
 901           prog);
 902
 903
 904   /* Quit! */
 905
 906   exit(ret);
 907 }
 908
 909 std::vector<std::string> SuperTux::read_directory(const std::string& pathname)
 910 {
 911   std::vector<std::string> dirnames;
 912
 913   DIR* dir = opendir(pathname.c_str());
 914   if (dir)
 915     {
 916       struct dirent *direntp;
 917
 918       while((direntp = readdir(dir)))
 919         {
 920           dirnames.push_back(direntp->d_name);
 921         }
 922
 923       closedir(dir);
 924     }
 925
 926   return dirnames;
 927 }
 928
 929 /* EOF */