src/setup.c

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