src/setup.cpp

   1 /*
   2   setup.c
   3
   4   Super Tux - Setup
   5
   6   by Bill Kendrick
   7   bill@newbreedsoftware.com
   8   http://www.newbreedsoftware.com/supertux/
   9
  10   April 11, 2000 - March 15, 2004
  11 */
  12
  13 #include <assert.h>
  14 #include <iostream>
  15 #include <stdio.h>
  16 #include <stdlib.h>
  17 #include <string.h>
  18 #include <errno.h>
  19 #include <unistd.h>
  20 #include <SDL.h>
  21 #include <SDL_image.h>
  22 #ifndef NOOPENGL
  23 #include <SDL_opengl.h>
  24 #endif
  25
  26 #include <sys/stat.h>
  27 #include <sys/types.h>
  28 #include <dirent.h>
  29 #ifndef WIN32
  30 #include <libgen.h>
  31 #endif
  32 #include <ctype.h>
  33
  34 #include "defines.h"
  35 #include "globals.h"
  36 #include "setup.h"
  37 #include "screen.h"
  38 #include "texture.h"
  39 #include "menu.h"
  40 #include "gameloop.h"
  41 #include "configfile.h"
  42 #include "scene.h"
  43
  44 #ifdef WIN32
  45 #define mkdir(dir, mode)    mkdir(dir)
  46 // on win32 we typically don't want LFS paths
  47 #undef DATA_PREFIX
  48 #define DATA_PREFIX "./data/"
  49 #endif
  50
  51 /* Local function prototypes: */
  52
  53 void seticon(void);
  54 void usage(char * prog, int ret);
  55
  56 /* Does the given file exist and is it accessible? */
  57 int faccessible(const char *filename)
  58 {
  59   struct stat filestat;
  60   if (stat(filename, &filestat) == -1)
  61     {
  62       return false;
  63     }
  64   else
  65     {
  66       if(S_ISREG(filestat.st_mode))
  67         return true;
  68       else
  69         return false;
  70     }
  71 }
  72
  73 /* Can we write to this location? */
  74 int fwriteable(const char *filename)
  75 {
  76   FILE* fi;
  77   fi = fopen(filename, "wa");
  78   if (fi == NULL)
  79     {
  80       return false;
  81     }
  82   return true;
  83 }
  84
  85 /* Makes sure a directory is created in either the SuperTux home directory or the SuperTux base directory.*/
  86 int fcreatedir(const char* relative_dir)
  87 {
  88   char path[1024];
  89   snprintf(path, 1024, "%s/%s/", st_dir, relative_dir);
  90   if(mkdir(path,0755) != 0)
  91     {
  92       snprintf(path, 1024, "%s/%s/", datadir.c_str(), relative_dir);
  93       if(mkdir(path,0755) != 0)
  94         {
  95           return false;
  96         }
  97       else
  98         {
  99           return true;
 100         }
 101     }
 102   else
 103     {
 104       return true;
 105     }
 106 }
 107
 108 FILE * opendata(const char * rel_filename, const char * mode)
 109 {
 110   char * filename = NULL;
 111   FILE * fi;
 112
 113   filename = (char *) malloc(sizeof(char) * (strlen(st_dir) +
 114                                              strlen(rel_filename) + 1));
 115
 116   strcpy(filename, st_dir);
 117   /* Open the high score file: */
 118
 119   strcat(filename, rel_filename);
 120
 121   /* Try opening the file: */
 122   fi = fopen(filename, mode);
 123
 124   if (fi == NULL)
 125     {
 126       fprintf(stderr, "Warning: Unable to open the file \"%s\" ", filename);
 127
 128       if (strcmp(mode, "r") == 0)
 129         fprintf(stderr, "for read!!!\n");
 130       else if (strcmp(mode, "w") == 0)
 131         fprintf(stderr, "for write!!!\n");
 132     }
 133   free( filename );
 134
 135   return(fi);
 136 }
 137
 138 /* Get all names of sub-directories in a certain directory. */
 139 /* Returns the number of sub-directories found. */
 140 /* Note: The user has to free the allocated space. */
 141 string_list_type dsubdirs(const char *rel_path,const  char* expected_file)
 142 {
 143   DIR *dirStructP;
 144   struct dirent *direntp;
 145   string_list_type sdirs;
 146   char filename[1024];
 147   char path[1024];
 148
 149   string_list_init(&sdirs);
 150   sprintf(path,"%s/%s",st_dir,rel_path);
 151   if((dirStructP = opendir(path)) != NULL)
 152     {
 153       while((direntp = readdir(dirStructP)) != NULL)
 154         {
 155           char absolute_filename[1024];
 156           struct stat buf;
 157
 158           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 159
 160           if (stat(absolute_filename, &buf) == 0 && S_ISDIR(buf.st_mode))
 161             {
 162               if(expected_file != NULL)
 163                 {
 164                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 165                   if(!faccessible(filename))
 166                     continue;
 167                 }
 168
 169               string_list_add_item(&sdirs,direntp->d_name);
 170             }
 171         }
 172       closedir(dirStructP);
 173     }
 174
 175   sprintf(path,"%s/%s",datadir.c_str(),rel_path);
 176   if((dirStructP = opendir(path)) != NULL)
 177     {
 178       while((direntp = readdir(dirStructP)) != NULL)
 179         {
 180           char absolute_filename[1024];
 181           struct stat buf;
 182
 183           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 184
 185           if (stat(absolute_filename, &buf) == 0 && S_ISDIR(buf.st_mode))
 186             {
 187               if(expected_file != NULL)
 188                 {
 189                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 190                   if(!faccessible(filename))
 191                     {
 192                       continue;
 193                     }
 194                   else
 195                     {
 196                       sprintf(filename,"%s/%s/%s/%s",st_dir,rel_path,direntp->d_name,expected_file);
 197                       if(faccessible(filename))
 198                         continue;
 199                     }
 200                 }
 201
 202               string_list_add_item(&sdirs,direntp->d_name);
 203             }
 204         }
 205       closedir(dirStructP);
 206     }
 207
 208   return sdirs;
 209 }
 210
 211 string_list_type dfiles(const char *rel_path, const  char* glob, const  char* exception_str)
 212 {
 213   DIR *dirStructP;
 214   struct dirent *direntp;
 215   string_list_type sdirs;
 216   char path[1024];
 217
 218   string_list_init(&sdirs);
 219   sprintf(path,"%s/%s",st_dir,rel_path);
 220   if((dirStructP = opendir(path)) != NULL)
 221     {
 222       while((direntp = readdir(dirStructP)) != NULL)
 223         {
 224           char absolute_filename[1024];
 225           struct stat buf;
 226
 227           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 228
 229           if (stat(absolute_filename, &buf) == 0 && S_ISREG(buf.st_mode))
 230             {
 231               if(exception_str != NULL)
 232                 {
 233                   if(strstr(direntp->d_name,exception_str) != NULL)
 234                     continue;
 235                 }
 236               if(glob != NULL)
 237                 if(strstr(direntp->d_name,glob) == NULL)
 238                   continue;
 239
 240               string_list_add_item(&sdirs,direntp->d_name);
 241             }
 242         }
 243       closedir(dirStructP);
 244     }
 245
 246   sprintf(path,"%s/%s",datadir.c_str(),rel_path);
 247   if((dirStructP = opendir(path)) != NULL)
 248     {
 249       while((direntp = readdir(dirStructP)) != NULL)
 250         {
 251           char absolute_filename[1024];
 252           struct stat buf;
 253
 254           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 255
 256           if (stat(absolute_filename, &buf) == 0 && S_ISREG(buf.st_mode))
 257             {
 258               if(exception_str != NULL)
 259                 {
 260                   if(strstr(direntp->d_name,exception_str) != NULL)
 261                     continue;
 262                 }
 263               if(glob != NULL)
 264                 if(strstr(direntp->d_name,glob) == NULL)
 265                   continue;
 266
 267               string_list_add_item(&sdirs,direntp->d_name);
 268             }
 269         }
 270       closedir(dirStructP);
 271     }
 272
 273   return sdirs;
 274 }
 275
 276 void free_strings(char **strings, int num)
 277 {
 278   int i;
 279   for(i=0; i < num; ++i)
 280     free(strings[i]);
 281 }
 282
 283 /* --- SETUP --- */
 284 /* Set SuperTux configuration and save directories */
 285 void st_directory_setup(void)
 286 {
 287   char *home;
 288   char str[1024];
 289   /* Get home directory (from $HOME variable)... if we can't determine it,
 290      use the current directory ("."): */
 291   if (getenv("HOME") != NULL)
 292     home = getenv("HOME");
 293   else
 294     home = ".";
 295
 296   st_dir = (char *) malloc(sizeof(char) * (strlen(home) +
 297                                            strlen("/.supertux") + 1));
 298   strcpy(st_dir, home);
 299   strcat(st_dir, "/.supertux");
 300
 301   /* Remove .supertux config-file from old SuperTux versions */
 302   if(faccessible(st_dir))
 303     {
 304       remove
 305         (st_dir);
 306     }
 307
 308   st_save_dir = (char *) malloc(sizeof(char) * (strlen(st_dir) + strlen("/save") + 1));
 309
 310   strcpy(st_save_dir,st_dir);
 311   strcat(st_save_dir,"/save");
 312
 313   /* Create them. In the case they exist they won't destroy anything. */
 314   mkdir(st_dir, 0755);
 315   mkdir(st_save_dir, 0755);
 316
 317   sprintf(str, "%s/levels", st_dir);
 318   mkdir(str, 0755);
 319
 320   // User has not that a datadir, so we try some magic
 321   if (datadir.empty())
 322     {
 323 #ifndef WIN32
 324       // Detect datadir
 325       char exe_file[PATH_MAX];
 326       if (readlink("/proc/self/exe", exe_file, PATH_MAX) < 0)
 327         {
 328           puts("Couldn't read /proc/self/exe, using default path: " DATA_PREFIX);
 329           datadir = DATA_PREFIX;
 330         }
 331       else
 332         {
 333           std::string exedir = std::string(dirname(exe_file)) + "/";
 334
 335           datadir = exedir + "../data/"; // SuperTux run from source dir
 336           if (access(datadir.c_str(), F_OK) != 0)
 337             {
 338               datadir = exedir + "../share/supertux/"; // SuperTux run from PATH
 339               if (access(datadir.c_str(), F_OK) != 0)
 340                 { // If all fails, fall back to compiled path
 341                   datadir = DATA_PREFIX;
 342                 }
 343             }
 344         }
 345 #else
 346   datadir = DATA_PREFIX;
 347 #endif
 348     }
 349   printf("Datadir: %s\n", datadir.c_str());
 350 }
 351
 352 /* Create and setup menus. */
 353 void st_menu(void)
 354 {
 355   main_menu      = new Menu();
 356   options_menu   = new Menu();
 357   options_controls_menu   = new Menu();
 358   load_game_menu = new Menu();
 359   save_game_menu = new Menu();
 360   game_menu      = new Menu();
 361   highscore_menu = new Menu();
 362   contrib_menu   = new Menu();
 363   contrib_subset_menu   = new Menu();
 364   worldmap_menu  = new Menu();
 365
 366   main_menu->set_pos(screen->w/2, 335);
 367   main_menu->additem(MN_GOTO, "Start Game",0,load_game_menu);
 368   main_menu->additem(MN_GOTO, "Contrib Levels",0,contrib_menu);
 369   main_menu->additem(MN_GOTO, "Options",0,options_menu);
 370   main_menu->additem(MN_ACTION,"Level editor",0,0);
 371   main_menu->additem(MN_ACTION,"Credits",0,0);
 372   main_menu->additem(MN_ACTION,"Quit",0,0);
 373
 374   options_menu->additem(MN_LABEL,"Options",0,0);
 375   options_menu->additem(MN_HL,"",0,0);
 376 #ifndef NOOPENGL
 377   options_menu->additem(MN_TOGGLE,"OpenGL",use_gl,0);
 378 #else
 379   options_menu->additem(MN_DEACTIVE,"OpenGL (not supported)",use_gl,0);
 380 #endif
 381   options_menu->additem(MN_TOGGLE,"Fullscreen",use_fullscreen,0);
 382   if(audio_device)
 383     {
 384       options_menu->additem(MN_TOGGLE,"Sound     ",use_sound,0);
 385       options_menu->additem(MN_TOGGLE,"Music     ",use_music,0);
 386     }
 387   else
 388     {
 389       options_menu->additem(MN_DEACTIVE,"Sound     ",use_sound,0);
 390       options_menu->additem(MN_DEACTIVE,"Music     ",use_music,0);
 391     }
 392   options_menu->additem(MN_TOGGLE,"Show FPS  ",show_fps,0);
 393   options_menu->additem(MN_GOTO,"Controls  ",0,options_controls_menu);
 394   options_menu->additem(MN_HL,"",0,0);
 395   options_menu->additem(MN_BACK,"Back",0,0);
 396
 397   options_controls_menu->additem(MN_LABEL,"Controls",0,0);
 398   options_controls_menu->additem(MN_HL,"",0,0);
 399   //FIXME:options_controls_menu->additem(MN_CONTROLFIELD,"Move Right", tux.keymap.right,0);
 400   options_controls_menu->additem(MN_HL,"",0,0);
 401   options_controls_menu->additem(MN_BACK,"Back",0,0);
 402
 403   load_game_menu->additem(MN_LABEL,"Start Game",0,0);
 404   load_game_menu->additem(MN_HL,"",0,0);
 405   load_game_menu->additem(MN_DEACTIVE,"Slot 1",0,0);
 406   load_game_menu->additem(MN_DEACTIVE,"Slot 2",0,0);
 407   load_game_menu->additem(MN_DEACTIVE,"Slot 3",0,0);
 408   load_game_menu->additem(MN_DEACTIVE,"Slot 4",0,0);
 409   load_game_menu->additem(MN_DEACTIVE,"Slot 5",0,0);
 410   load_game_menu->additem(MN_HL,"",0,0);
 411   load_game_menu->additem(MN_BACK,"Back",0,0);
 412
 413   save_game_menu->additem(MN_LABEL,"Save Game",0,0);
 414   save_game_menu->additem(MN_HL,"",0,0);
 415   save_game_menu->additem(MN_DEACTIVE,"Slot 1",0,0);
 416   save_game_menu->additem(MN_DEACTIVE,"Slot 2",0,0);
 417   save_game_menu->additem(MN_DEACTIVE,"Slot 3",0,0);
 418   save_game_menu->additem(MN_DEACTIVE,"Slot 4",0,0);
 419   save_game_menu->additem(MN_DEACTIVE,"Slot 5",0,0);
 420   save_game_menu->additem(MN_HL,"",0,0);
 421   save_game_menu->additem(MN_BACK,"Back",0,0);
 422
 423   game_menu->additem(MN_LABEL,"InGame Menu",0,0);
 424   game_menu->additem(MN_HL,"",0,0);
 425   game_menu->additem(MN_ACTION,"Return To Game",0,0);
 426   game_menu->additem(MN_GOTO,"Save Game",0,save_game_menu);
 427   game_menu->additem(MN_GOTO,"Load Game",0,load_game_menu);
 428   game_menu->additem(MN_GOTO,"Options",0,options_menu);
 429   game_menu->additem(MN_HL,"",0,0);
 430   game_menu->additem(MN_ACTION,"Quit Game",0,0);
 431
 432   worldmap_menu->additem(MN_LABEL,"Worldmap Menu",0,0);
 433   worldmap_menu->additem(MN_HL,"",0,0);
 434   worldmap_menu->additem(MN_ACTION,"Return To Game",0,0);
 435   worldmap_menu->additem(MN_GOTO,"Options",0,options_menu);
 436   worldmap_menu->additem(MN_HL,"",0,0);
 437   worldmap_menu->additem(MN_ACTION,"Quit Game",0,0);
 438
 439   highscore_menu->additem(MN_TEXTFIELD,"Enter your name:",0,0);
 440 }
 441
 442 void update_load_save_game_menu(Menu* pmenu, int load)
 443 {
 444   for(int i = 2; i < 7; ++i)
 445     {
 446       // FIXME: Insert a real savegame struct/class here instead of
 447       // doing string vodoo
 448       std::string tmp = slotinfo(i-1);
 449
 450       if(load && tmp.length() == strlen("Slot X - Free"))
 451         pmenu->item[i].kind = MN_ACTION;
 452       else
 453         pmenu->item[i].kind = MN_ACTION;
 454       pmenu->item[i].change_text(tmp.c_str());
 455     }
 456 }
 457
 458 void process_save_game_menu()
 459 {
 460   int slot = save_game_menu->check();
 461   if (slot != -1)
 462     GameSession::current()->savegame(slot - 1);
 463 }
 464
 465 bool process_load_game_menu()
 466 {
 467   int slot = load_game_menu->check();
 468
 469   if(slot != -1)
 470     {
 471       // FIXME: Insert a real savegame struct/class here instead of
 472       // doing string vodoo
 473       std::string tmp = slotinfo(slot-1);
 474
 475       if (tmp.length() == strlen("Slot X - Free"))
 476         { // Slot is free, so start a new game
 477           GameSession session("default", 1, ST_GL_PLAY);
 478           session.run();
 479
 480           show_menu = true;
 481           Menu::set_current(main_menu);
 482         }
 483       else
 484         {
 485           puts("Warning: Loading games isn't supported at the moment");
 486 #if 0
 487           // Slot contains a level, so load it
 488           if (game_started)
 489             {
 490               GameSession session("default",slot - 1,ST_GL_LOAD_GAME);
 491               session.run();
 492
 493               show_menu = true;
 494               Menu::set_current(main_menu);
 495             }
 496           else
 497             {
 498               //loadgame(slot - 1);
 499             }
 500 #endif
 501         }
 502       st_pause_ticks_stop();
 503       return true;
 504     }
 505   else
 506     {
 507       return false;
 508     }
 509 }
 510
 511 /* Handle changes made to global settings in the options menu. */
 512 void process_options_menu(void)
 513 {
 514   switch (options_menu->check())
 515     {
 516     case 2:
 517 #ifndef NOOPENGL
 518       if(use_gl != options_menu->item[2].toggled)
 519         {
 520           use_gl = !use_gl;
 521           st_video_setup();
 522         }
 523 #endif
 524       break;
 525     case 3:
 526       if(use_fullscreen != options_menu->item[3].toggled)
 527         {
 528           use_fullscreen = !use_fullscreen;
 529           st_video_setup();
 530         }
 531       break;
 532     case 4:
 533       if(use_sound != options_menu->item[4].toggled)
 534         use_sound = !use_sound;
 535       break;
 536     case 5:
 537       if(use_music != options_menu->item[5].toggled)
 538         {
 539           if(use_music)
 540             {
 541               if(playing_music())
 542                 {
 543                   halt_music();
 544                 }
 545               use_music = false;
 546             }
 547           else
 548             {
 549               use_music = true;
 550               if (!playing_music())
 551                 {
 552                   play_current_music();
 553                 }
 554             }
 555         }
 556       break;
 557     case 6:
 558       if(show_fps != options_menu->item[6].toggled)
 559         show_fps = !show_fps;
 560       break;
 561     }
 562 }
 563
 564 void st_general_setup(void)
 565 {
 566   /* Seed random number generator: */
 567
 568   srand(SDL_GetTicks());
 569
 570   /* Set icon image: */
 571
 572   seticon();
 573
 574   /* Unicode needed for input handling: */
 575
 576   SDL_EnableUNICODE(1);
 577
 578   /* Load global images: */
 579
 580   black_text  = new Text(datadir + "/images/status/letters-black.png", TEXT_TEXT, 16,18);
 581   gold_text   = new Text(datadir + "/images/status/letters-gold.png", TEXT_TEXT, 16,18);
 582   blue_text   = new Text(datadir + "/images/status/letters-blue.png", TEXT_TEXT, 16,18);
 583   red_text    = new Text(datadir + "/images/status/letters-red.png", TEXT_TEXT, 16,18);
 584   white_text  = new Text(datadir + "/images/status/letters-white.png", TEXT_TEXT, 16,18);
 585   white_small_text = new Text(datadir + "/images/status/letters-white-small.png", TEXT_TEXT, 8,9);
 586   white_big_text   = new Text(datadir + "/images/status/letters-white-big.png", TEXT_TEXT, 20,23);
 587   yellow_nums = new Text(datadir + "/images/status/numbers.png", TEXT_NUM, 32,32);
 588
 589   /* Load GUI/menu images: */
 590   checkbox = new Surface(datadir + "/images/status/checkbox.png", USE_ALPHA);
 591   checkbox_checked = new Surface(datadir + "/images/status/checkbox-checked.png", USE_ALPHA);
 592   back = new Surface(datadir + "/images/status/back.png", USE_ALPHA);
 593   arrow_left = new Surface(datadir + "/images/icons/left.png", USE_ALPHA);
 594   arrow_right = new Surface(datadir + "/images/icons/right.png", USE_ALPHA);
 595
 596   /* Load the mouse-cursor */
 597   mouse_cursor = new MouseCursor( datadir + "/images/status/mousecursor.png",1);
 598
 599 }
 600
 601 void st_general_free(void)
 602 {
 603
 604   /* Free global images: */
 605
 606   delete black_text;
 607   delete gold_text;
 608   delete white_text;
 609   delete blue_text;
 610   delete red_text;
 611   delete white_small_text;
 612   delete white_big_text;
 613
 614   /* Free GUI/menu images: */
 615   delete checkbox;
 616   delete checkbox_checked;
 617   delete back;
 618   delete arrow_left;
 619   delete arrow_right;
 620
 621   /* Free mouse-cursor */
 622   delete mouse_cursor;
 623
 624   /* Free menus */
 625   delete main_menu;
 626   delete game_menu;
 627   delete options_menu;
 628   delete highscore_menu;
 629   delete save_game_menu;
 630   delete load_game_menu;
 631 }
 632
 633 void st_video_setup(void)
 634 {
 635   if(screen != NULL)
 636     SDL_FreeSurface(screen);
 637
 638   /* Init SDL Video: */
 639
 640   if (SDL_Init(SDL_INIT_VIDEO) < 0)
 641     {
 642       fprintf(stderr,
 643               "\nError: I could not initialize video!\n"
 644               "The Simple DirectMedia error that occured was:\n"
 645               "%s\n\n", SDL_GetError());
 646       exit(1);
 647     }
 648
 649   /* Open display: */
 650   if(use_gl)
 651     st_video_setup_gl();
 652   else
 653     st_video_setup_sdl();
 654
 655   Surface::reload_all();
 656
 657   /* Set window manager stuff: */
 658   SDL_WM_SetCaption("SuperTux " VERSION, "SuperTux");
 659 }
 660
 661 void st_video_setup_sdl(void)
 662 {
 663   SDL_FreeSurface(screen);
 664
 665   if (use_fullscreen)
 666     {
 667       screen = SDL_SetVideoMode(640, 480, 0, SDL_FULLSCREEN ) ; /* | SDL_HWSURFACE); */
 668       if (screen == NULL)
 669         {
 670           fprintf(stderr,
 671                   "\nWarning: I could not set up fullscreen video for "
 672                   "640x480 mode.\n"
 673                   "The Simple DirectMedia error that occured was:\n"
 674                   "%s\n\n", SDL_GetError());
 675           use_fullscreen = false;
 676         }
 677     }
 678   else
 679     {
 680       screen = SDL_SetVideoMode(640, 480, 0, SDL_HWSURFACE | SDL_DOUBLEBUF );
 681
 682       if (screen == NULL)
 683         {
 684           fprintf(stderr,
 685                   "\nError: I could not set up video for 640x480 mode.\n"
 686                   "The Simple DirectMedia error that occured was:\n"
 687                   "%s\n\n", SDL_GetError());
 688           exit(1);
 689         }
 690     }
 691 }
 692
 693 void st_video_setup_gl(void)
 694 {
 695 #ifndef NOOPENGL
 696
 697   SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
 698   SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
 699   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
 700   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 701   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 702
 703   if (use_fullscreen)
 704     {
 705       screen = SDL_SetVideoMode(640, 480, 0, SDL_FULLSCREEN | SDL_OPENGL) ; /* | SDL_HWSURFACE); */
 706       if (screen == NULL)
 707         {
 708           fprintf(stderr,
 709                   "\nWarning: I could not set up fullscreen video for "
 710                   "640x480 mode.\n"
 711                   "The Simple DirectMedia error that occured was:\n"
 712                   "%s\n\n", SDL_GetError());
 713           use_fullscreen = false;
 714         }
 715     }
 716   else
 717     {
 718       screen = SDL_SetVideoMode(640, 480, 0, SDL_OPENGL);
 719
 720       if (screen == NULL)
 721         {
 722           fprintf(stderr,
 723                   "\nError: I could not set up video for 640x480 mode.\n"
 724                   "The Simple DirectMedia error that occured was:\n"
 725                   "%s\n\n", SDL_GetError());
 726           exit(1);
 727         }
 728     }
 729
 730   /*
 731    * Set up OpenGL for 2D rendering.
 732    */
 733   glDisable(GL_DEPTH_TEST);
 734   glDisable(GL_CULL_FACE);
 735
 736   glViewport(0, 0, screen->w, screen->h);
 737   glMatrixMode(GL_PROJECTION);
 738   glLoadIdentity();
 739   glOrtho(0, screen->w, screen->h, 0, -1.0, 1.0);
 740
 741   glMatrixMode(GL_MODELVIEW);
 742   glLoadIdentity();
 743   glTranslatef(0.0f, 0.0f, 0.0f);
 744
 745 #endif
 746
 747 }
 748
 749 void st_joystick_setup(void)
 750 {
 751
 752   /* Init Joystick: */
 753
 754   use_joystick = true;
 755
 756   if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
 757     {
 758       fprintf(stderr, "Warning: I could not initialize joystick!\n"
 759               "The Simple DirectMedia error that occured was:\n"
 760               "%s\n\n", SDL_GetError());
 761
 762       use_joystick = false;
 763     }
 764   else
 765     {
 766       /* Open joystick: */
 767       if (SDL_NumJoysticks() <= 0)
 768         {
 769           fprintf(stderr, "Warning: No joysticks are available.\n");
 770
 771           use_joystick = false;
 772         }
 773       else
 774         {
 775           js = SDL_JoystickOpen(joystick_num);
 776
 777           if (js == NULL)
 778             {
 779               fprintf(stderr, "Warning: Could not open joystick %d.\n"
 780                       "The Simple DirectMedia error that occured was:\n"
 781                       "%s\n\n", joystick_num, SDL_GetError());
 782
 783               use_joystick = false;
 784             }
 785           else
 786             {
 787               /* Check for proper joystick configuration: */
 788
 789               if (SDL_JoystickNumAxes(js) < 2)
 790                 {
 791                   fprintf(stderr,
 792                           "Warning: Joystick does not have enough axes!\n");
 793
 794                   use_joystick = false;
 795                 }
 796               else
 797                 {
 798                   if (SDL_JoystickNumButtons(js) < 2)
 799                     {
 800                       fprintf(stderr,
 801                               "Warning: "
 802                               "Joystick does not have enough buttons!\n");
 803
 804                       use_joystick = false;
 805                     }
 806                 }
 807             }
 808         }
 809     }
 810 }
 811
 812 void st_audio_setup(void)
 813 {
 814
 815   /* Init SDL Audio silently even if --disable-sound : */
 816
 817   if (audio_device)
 818     {
 819       if (SDL_Init(SDL_INIT_AUDIO) < 0)
 820         {
 821           /* only print out message if sound or music
 822              was not disabled at command-line
 823            */
 824           if (use_sound || use_music)
 825             {
 826               fprintf(stderr,
 827                       "\nWarning: I could not initialize audio!\n"
 828                       "The Simple DirectMedia error that occured was:\n"
 829                       "%s\n\n", SDL_GetError());
 830             }
 831           /* keep the programming logic the same :-)
 832              because in this case, use_sound & use_music' values are ignored
 833              when there's no available audio device
 834           */
 835           use_sound = false;
 836           use_music = false;
 837           audio_device = false;
 838         }
 839     }
 840
 841
 842   /* Open sound silently regarless the value of "use_sound": */
 843
 844   if (audio_device)
 845     {
 846       if (open_audio(44100, AUDIO_S16, 2, 2048) < 0)
 847         {
 848           /* only print out message if sound or music
 849              was not disabled at command-line
 850            */
 851           if (use_sound || use_music)
 852             {
 853               fprintf(stderr,
 854                       "\nWarning: I could not set up audio for 44100 Hz "
 855                       "16-bit stereo.\n"
 856                       "The Simple DirectMedia error that occured was:\n"
 857                       "%s\n\n", SDL_GetError());
 858             }
 859           use_sound = false;
 860           use_music = false;
 861           audio_device = false;
 862         }
 863     }
 864
 865 }
 866
 867
 868 /* --- SHUTDOWN --- */
 869
 870 void st_shutdown(void)
 871 {
 872   close_audio();
 873   SDL_Quit();
 874   saveconfig();
 875 }
 876
 877 /* --- ABORT! --- */
 878
 879 void st_abort(const std::string& reason, const std::string& details)
 880 {
 881   fprintf(stderr, "\nError: %s\n%s\n\n", reason.c_str(), details.c_str());
 882   st_shutdown();
 883   abort();
 884 }
 885
 886
 887 /* Set Icon (private) */
 888
 889 void seticon(void)
 890 {
 891   int masklen;
 892   Uint8 * mask;
 893   SDL_Surface * icon;
 894
 895
 896   /* Load icon into a surface: */
 897
 898   icon = IMG_Load((datadir + "/images/icon.png").c_str());
 899   if (icon == NULL)
 900     {
 901       fprintf(stderr,
 902               "\nError: I could not load the icon image: %s%s\n"
 903               "The Simple DirectMedia error that occured was:\n"
 904               "%s\n\n", datadir.c_str(), "/images/icon.png", SDL_GetError());
 905       exit(1);
 906     }
 907
 908
 909   /* Create mask: */
 910
 911   masklen = (((icon -> w) + 7) / 8) * (icon -> h);
 912   mask = (Uint8*) malloc(masklen * sizeof(Uint8));
 913   memset(mask, 0xFF, masklen);
 914
 915
 916   /* Set icon: */
 917
 918   SDL_WM_SetIcon(icon, mask);
 919
 920
 921   /* Free icon surface & mask: */
 922
 923   free(mask);
 924   SDL_FreeSurface(icon);
 925 }
 926
 927
 928 /* Parse command-line arguments: */
 929
 930 void parseargs(int argc, char * argv[])
 931 {
 932   int i;
 933
 934   loadconfig();
 935
 936   /* Parse arguments: */
 937
 938   for (i = 1; i < argc; i++)
 939     {
 940       if (strcmp(argv[i], "--fullscreen") == 0 ||
 941           strcmp(argv[i], "-f") == 0)
 942         {
 943           /* Use full screen: */
 944
 945           use_fullscreen = true;
 946         }
 947       else if (strcmp(argv[i], "--joystick") == 0 || strcmp(argv[i], "-j") == 0)
 948         {
 949           assert(i+1 < argc);
 950           joystick_num = atoi(argv[++i]);
 951         }
 952       else if (strcmp(argv[i], "--worldmap") == 0)
 953         {
 954           launch_worldmap_mode = true;
 955         }
 956       else if (strcmp(argv[i], "--datadir") == 0
 957                || strcmp(argv[i], "-d") == 0 )
 958         {
 959           assert(i+1 < argc);
 960           datadir = argv[++i];
 961         }
 962       else if (strcmp(argv[i], "--show-fps") == 0)
 963         {
 964           /* Use full screen: */
 965
 966           show_fps = true;
 967         }
 968       else if (strcmp(argv[i], "--opengl") == 0 ||
 969                strcmp(argv[i], "-gl") == 0)
 970         {
 971 #ifndef NOOPENGL
 972           /* Use OpengGL: */
 973
 974           use_gl = true;
 975 #endif
 976         }
 977       else if (strcmp(argv[i], "--sdl") == 0)
 978           {
 979             use_gl = false;
 980           }
 981       else if (strcmp(argv[i], "--usage") == 0)
 982         {
 983           /* Show usage: */
 984
 985           usage(argv[0], 0);
 986         }
 987       else if (strcmp(argv[i], "--version") == 0)
 988         {
 989           /* Show version: */
 990           printf("SuperTux " VERSION "\n");
 991           exit(0);
 992         }
 993       else if (strcmp(argv[i], "--disable-sound") == 0)
 994         {
 995           /* Disable the compiled in sound feature */
 996           printf("Sounds disabled \n");
 997           use_sound = false;
 998         }
 999       else if (strcmp(argv[i], "--disable-music") == 0)
1000         {
1001           /* Disable the compiled in sound feature */
1002           printf("Music disabled \n");
1003           use_music = false;
1004         }
1005       else if (strcmp(argv[i], "--debug-mode") == 0)
1006         {
1007           /* Enable the debug-mode */
1008           debug_mode = true;
1009
1010         }
1011       else if (strcmp(argv[i], "--help") == 0)
1012         {     /* Show help: */
1013           puts("Super Tux " VERSION "\n"
1014                "  Please see the file \"README.txt\" for more details.\n");
1015           printf("Usage: %s [OPTIONS] FILENAME\n\n", argv[0]);
1016           puts("Display Options:\n"
1017                "  --fullscreen        Run in fullscreen mode.\n"
1018                "  --opengl            If opengl support was compiled in, this will enable\n"
1019                "                      the EXPERIMENTAL OpenGL mode.\n"
1020                "  --sdl               Use non-opengl renderer\n"
1021                "\n"
1022                "Sound Options:\n"
1023                "  --disable-sound     If sound support was compiled in,  this will\n"
1024                "                      disable sound for this session of the game.\n"
1025                "  --disable-music     Like above, but this will disable music.\n"
1026                "\n"
1027                "Misc Options:\n"
1028                "  -j, --joystick NUM  Use joystick NUM (default: 0)\n"
1029                "  --worldmap          Start in worldmap-mode (EXPERIMENTAL)\n"
1030                "  -d, --datadir DIR   Load Game data from DIR (default: automatic)\n"
1031                "  --debug-mode        Enables the debug-mode, which is useful for developers.\n"
1032                "  --help              Display a help message summarizing command-line\n"
1033                "                      options, license and game controls.\n"
1034                "  --usage             Display a brief message summarizing command-line options.\n"
1035                "  --version           Display the version of SuperTux you're running.\n\n"
1036                );
1037           exit(0);
1038         }
1039       else if (argv[i][0] != '-')
1040         {
1041           level_startup_file = argv[i];
1042         }
1043       else
1044         {
1045           /* Unknown - complain! */
1046
1047           usage(argv[0], 1);
1048         }
1049     }
1050 }
1051
1052
1053 /* Display usage: */
1054
1055 void usage(char * prog, int ret)
1056 {
1057   FILE * fi;
1058
1059
1060   /* Determine which stream to write to: */
1061
1062   if (ret == 0)
1063     fi = stdout;
1064   else
1065     fi = stderr;
1066
1067
1068   /* Display the usage message: */
1069
1070   fprintf(fi, "Usage: %s [--fullscreen] [--opengl] [--disable-sound] [--disable-music] [--debug-mode] | [--usage | --help | --version] [--worldmap] FILENAME\n",
1071           prog);
1072
1073
1074   /* Quit! */
1075
1076   exit(ret);
1077 }
1078