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 char ** dsubdirs(char *rel_path, char* expected_file, int* num)
  94 {
  95   DIR *dirStructP;
  96   struct dirent *direntp;
  97   int i = 0;
  98   char ** sdirs= NULL;
  99   char filename[1024];
 100   char path[1024];
 101
 102   sprintf(path,"%s/%s",st_dir,rel_path);
 103   if((dirStructP = opendir(path)) != NULL)
 104     {
 105       while((direntp = readdir(dirStructP)) != NULL)
 106         {
 107           char absolute_filename[1024];
 108           struct stat buf;
 109
 110           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 111
 112           if (stat(absolute_filename, &buf) == 0 && S_ISDIR(buf.st_mode))
 113             {
 114               if(expected_file != NULL)
 115                 {
 116                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 117                   if(!faccessible(filename))
 118                     continue;
 119                 }
 120
 121               sdirs = (char**) realloc(sdirs, sizeof(char*) * (i+1));
 122               sdirs[i] = (char*) malloc(sizeof(char) * strlen(direntp->d_name) + 1 );
 123               strcpy(sdirs[i],direntp->d_name);
 124               ++i;
 125             }
 126         }
 127       closedir(dirStructP);
 128     }
 129
 130   sprintf(path,"%s/%s",DATA_PREFIX,rel_path);
 131   if((dirStructP = opendir(path)) != NULL)
 132     {
 133       while((direntp = readdir(dirStructP)) != NULL)
 134         {
 135           char absolute_filename[1024];
 136           struct stat buf;
 137
 138           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 139
 140           if (stat(absolute_filename, &buf) == 0 && S_ISDIR(buf.st_mode))
 141             {
 142               if(expected_file != NULL)
 143                 {
 144                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 145                   if(!faccessible(filename))
 146                     {
 147                       continue;
 148                     }
 149                   else
 150                     {
 151                       sprintf(filename,"%s/%s/%s/%s",st_dir,rel_path,direntp->d_name,expected_file);
 152                       if(faccessible(filename))
 153                         continue;
 154                     }
 155                 }
 156
 157               sdirs = (char**) realloc(sdirs, sizeof(char*) * (i+1));
 158               sdirs[i] = (char*) malloc(sizeof(char) * strlen(direntp->d_name) + 1 );
 159               strcpy(sdirs[i],direntp->d_name);
 160               ++i;
 161             }
 162         }
 163       closedir(dirStructP);
 164     }
 165
 166   *num = i;
 167   return sdirs;
 168 }
 169
 170 void free_strings(char **strings, int num)
 171 {
 172   int i;
 173   for(i=0; i < num; ++i)
 174     free(strings[i]);
 175 }
 176
 177 /* --- SETUP --- */
 178 /* Set SuperTux configuration and save directories */
 179 void st_directory_setup(void)
 180 {
 181   char *home;
 182   char str[1024];
 183   /* Get home directory (from $HOME variable)... if we can't determine it,
 184      use the current directory ("."): */
 185   if (getenv("HOME") != NULL)
 186     home = getenv("HOME");
 187   else
 188     home = ".";
 189
 190   st_dir = (char *) malloc(sizeof(char) * (strlen(home) +
 191                            strlen("/.supertux") + 1));
 192   strcpy(st_dir, home);
 193   strcat(st_dir, "/.supertux");
 194
 195   st_save_dir = (char *) malloc(sizeof(char) * (strlen(st_dir) + strlen("/save") + 1));
 196
 197   strcpy(st_save_dir,st_dir);
 198   strcat(st_save_dir,"/save");
 199
 200   /* Create them. In the case they exist they won't destroy anything. */
 201 #ifdef LINUX
 202
 203   mkdir(st_dir, 0755);
 204   mkdir(st_save_dir, 0755);
 205
 206   sprintf(str, "%s/levels", st_dir);
 207   mkdir(str, 0755);
 208 #else
 209   #ifdef WIN32
 210
 211   mkdir(st_dir);
 212   mkdir(st_save_dir);
 213   sprintf(str, "%s/levels", st_dir);
 214   mkdir(str);
 215 #endif
 216 #endif
 217
 218 }
 219
 220 /* Create and setup menus. */
 221 void st_menu(void)
 222 {
 223   menu_init(&main_menu);
 224   menu_additem(&main_menu,menu_item_create(MN_LABEL,"Main Menu",0,0));
 225   menu_additem(&main_menu,menu_item_create(MN_HL,"",0,0));
 226   menu_additem(&main_menu,menu_item_create(MN_ACTION,"Start Game",0,0));
 227   menu_additem(&main_menu,menu_item_create(MN_GOTO,"Load Game",0,&load_game_menu));
 228   menu_additem(&main_menu,menu_item_create(MN_GOTO,"Options",0,&options_menu));
 229   menu_additem(&main_menu,menu_item_create(MN_ACTION,"Level editor",0,0));
 230   menu_additem(&main_menu,menu_item_create(MN_HL,"",0,0));
 231   menu_additem(&main_menu,menu_item_create(MN_ACTION,"Quit",0,0));
 232
 233   menu_init(&options_menu);
 234   menu_additem(&options_menu,menu_item_create(MN_LABEL,"Options",0,0));
 235   menu_additem(&options_menu,menu_item_create(MN_HL,"",0,0));
 236   menu_additem(&options_menu,menu_item_create(MN_TOGGLE,"Fullscreen",use_fullscreen,0));
 237   if(audio_device == YES)
 238     {
 239       menu_additem(&options_menu,menu_item_create(MN_TOGGLE,"Sound     ",use_sound,0));
 240       menu_additem(&options_menu,menu_item_create(MN_TOGGLE,"Music     ",use_music,0));
 241     }
 242   else
 243     {
 244       menu_additem(&options_menu,menu_item_create(MN_DEACTIVE,"Sound     ",use_sound,0));
 245       menu_additem(&options_menu,menu_item_create(MN_DEACTIVE,"Music     ",use_music,0));
 246     }
 247   menu_additem(&options_menu,menu_item_create(MN_TOGGLE,"Show FPS  ",show_fps,0));
 248   menu_additem(&options_menu,menu_item_create(MN_HL,"",0,0));
 249   menu_additem(&options_menu,menu_item_create(MN_BACK,"Back",0,0));
 250
 251   menu_init(&load_game_menu);
 252   menu_additem(&load_game_menu,menu_item_create(MN_LABEL,"Load Game",0,0));
 253   menu_additem(&load_game_menu,menu_item_create(MN_HL,"",0,0));
 254   menu_additem(&load_game_menu,menu_item_create(MN_DEACTIVE,"Slot 1",0,0));
 255   menu_additem(&load_game_menu,menu_item_create(MN_DEACTIVE,"Slot 2",0,0));
 256   menu_additem(&load_game_menu,menu_item_create(MN_DEACTIVE,"Slot 3",0,0));
 257   menu_additem(&load_game_menu,menu_item_create(MN_DEACTIVE,"Slot 4",0,0));
 258   menu_additem(&load_game_menu,menu_item_create(MN_DEACTIVE,"Slot 5",0,0));
 259   menu_additem(&load_game_menu,menu_item_create(MN_HL,"",0,0));
 260   menu_additem(&load_game_menu,menu_item_create(MN_BACK,"Back",0,0));
 261
 262   menu_init(&save_game_menu);
 263   menu_additem(&save_game_menu,menu_item_create(MN_LABEL,"Save Game",0,0));
 264   menu_additem(&save_game_menu,menu_item_create(MN_HL,"",0,0));
 265   menu_additem(&save_game_menu,menu_item_create(MN_DEACTIVE,"Slot 1",0,0));
 266   menu_additem(&save_game_menu,menu_item_create(MN_DEACTIVE,"Slot 2",0,0));
 267   menu_additem(&save_game_menu,menu_item_create(MN_DEACTIVE,"Slot 3",0,0));
 268   menu_additem(&save_game_menu,menu_item_create(MN_DEACTIVE,"Slot 4",0,0));
 269   menu_additem(&save_game_menu,menu_item_create(MN_DEACTIVE,"Slot 5",0,0));
 270   menu_additem(&save_game_menu,menu_item_create(MN_HL,"",0,0));
 271   menu_additem(&save_game_menu,menu_item_create(MN_BACK,"Back",0,0));
 272
 273   menu_init(&game_menu);
 274   menu_additem(&game_menu,menu_item_create(MN_LABEL,"InGame Menu",0,0));
 275   menu_additem(&game_menu,menu_item_create(MN_HL,"",0,0));
 276   menu_additem(&game_menu,menu_item_create(MN_ACTION,"Return To Game",0,0));
 277   menu_additem(&game_menu,menu_item_create(MN_GOTO,"Save Game",0,&save_game_menu));
 278   menu_additem(&game_menu,menu_item_create(MN_GOTO,"Load Game",0,&load_game_menu));
 279   menu_additem(&game_menu,menu_item_create(MN_GOTO,"Options",0,&options_menu));
 280   menu_additem(&game_menu,menu_item_create(MN_HL,"",0,0));
 281   menu_additem(&game_menu,menu_item_create(MN_ACTION,"Quit Game",0,0));
 282
 283   menu_init(&highscore_menu);
 284   menu_additem(&highscore_menu,menu_item_create(MN_TEXTFIELD,"Enter your name:",0,0));
 285
 286 }
 287
 288 void update_load_save_game_menu(menu_type* pmenu, int load)
 289 {
 290   int i;
 291
 292   for(i = 2; i < 7; ++i)
 293     {
 294       char *tmp;
 295       slotinfo(&tmp,i-1);
 296       if(load && strlen(tmp) == strlen("Slot X - Free") )
 297         pmenu->item[i].kind = MN_DEACTIVE;
 298       else
 299         pmenu->item[i].kind = MN_ACTION;
 300       menu_item_change_text(&pmenu->item[i],tmp);
 301       free(tmp);
 302     }
 303 }
 304
 305 void process_save_load_game_menu(int save)
 306 {
 307   int slot;
 308   switch (slot = menu_check(save ? &save_game_menu : &load_game_menu))
 309     {
 310     default:
 311       if(slot != -1)
 312         {
 313           if(save == YES)
 314             {
 315               savegame(slot);
 316             }
 317           else
 318             {
 319               if(game_started == NO)
 320                 gameloop("whatever",slot,ST_GL_LOAD_GAME);
 321               else
 322                 loadgame(slot);
 323             }
 324           st_pause_ticks_stop();
 325         }
 326       break;
 327     }
 328 }
 329
 330 /* Handle changes made to global settings in the options menu. */
 331 void process_options_menu(void)
 332 {
 333   switch (menu_check(&options_menu))
 334     {
 335     case 2:
 336       if(use_fullscreen != options_menu.item[2].toggled)
 337         {
 338           use_fullscreen = !use_fullscreen;
 339           st_video_setup();
 340         }
 341       break;
 342     case 3:
 343       if(use_sound != options_menu.item[3].toggled)
 344         use_sound = !use_sound;
 345       break;
 346     case 4:
 347       if(use_music != options_menu.item[4].toggled)
 348         {
 349           if(use_music == YES)
 350             {
 351               if(playing_music())
 352                 {
 353                   halt_music();
 354                 }
 355               use_music = NO;
 356             }
 357           else
 358             {
 359               use_music = YES;
 360               if (!playing_music())
 361                 {
 362                   play_current_music();
 363                 }
 364             }
 365         }
 366       break;
 367     case 5:
 368       if(show_fps != options_menu.item[5].toggled)
 369         show_fps = !show_fps;
 370       break;
 371     }
 372 }
 373
 374 void st_general_setup(void)
 375 {
 376   /* Seed random number generator: */
 377
 378   srand(SDL_GetTicks());
 379
 380   /* Load global images: */
 381
 382   text_load(&black_text,DATA_PREFIX "/images/status/letters-black.png", TEXT_TEXT, 16,18);
 383   text_load(&gold_text,DATA_PREFIX "/images/status/letters-gold.png", TEXT_TEXT, 16,18);
 384   text_load(&blue_text,DATA_PREFIX "/images/status/letters-blue.png", TEXT_TEXT, 16,18);
 385   text_load(&red_text,DATA_PREFIX "/images/status/letters-red.png", TEXT_TEXT, 16,18);
 386   text_load(&white_text,DATA_PREFIX "/images/status/letters-white.png", TEXT_TEXT, 16,18);
 387   text_load(&white_small_text,DATA_PREFIX "/images/status/letters-white-small.png", TEXT_TEXT, 8,9);
 388   text_load(&white_big_text,DATA_PREFIX "/images/status/letters-white-big.png", TEXT_TEXT, 24,27);
 389   text_load(&yellow_nums,DATA_PREFIX "/images/status/numbers.png", TEXT_NUM, 32,32);
 390
 391   /* Load GUI/menu images: */
 392   texture_load(&checkbox, DATA_PREFIX "/images/status/checkbox.png", USE_ALPHA);
 393   texture_load(&checkbox_checked, DATA_PREFIX "/images/status/checkbox-checked.png", USE_ALPHA);
 394   texture_load(&back, DATA_PREFIX "/images/status/back.png", USE_ALPHA);
 395   texture_load(&arrow_left, DATA_PREFIX "/images/icons/left.png", USE_ALPHA);
 396   texture_load(&arrow_right, DATA_PREFIX "/images/icons/right.png", USE_ALPHA);
 397
 398   /* Set icon image: */
 399
 400   seticon();
 401   SDL_EnableUNICODE(1);
 402
 403 }
 404
 405 void st_general_free(void)
 406 {
 407
 408   /* Free global images: */
 409
 410   text_free(&black_text);
 411   text_free(&gold_text);
 412   text_free(&white_text);
 413   text_free(&blue_text);
 414   text_free(&red_text);
 415   text_free(&white_small_text);
 416
 417   /* Free GUI/menu images: */
 418   texture_free(&checkbox);
 419   texture_free(&checkbox_checked);
 420   texture_free(&back);
 421
 422   /* Free menus */
 423
 424   menu_free(&main_menu);
 425   menu_free(&game_menu);
 426   menu_free(&options_menu);
 427   menu_free(&highscore_menu);
 428
 429 }
 430
 431 void st_video_setup(void)
 432 {
 433
 434   if(screen != NULL)
 435     SDL_FreeSurface(screen);
 436
 437   /* Init SDL Video: */
 438
 439   if (SDL_Init(SDL_INIT_VIDEO) < 0)
 440     {
 441       fprintf(stderr,
 442               "\nError: I could not initialize video!\n"
 443               "The Simple DirectMedia error that occured was:\n"
 444               "%s\n\n", SDL_GetError());
 445       exit(1);
 446     }
 447
 448   /* Open display: */
 449
 450   if(use_gl)
 451     st_video_setup_gl();
 452   else
 453     st_video_setup_sdl();
 454
 455   texture_setup();
 456
 457   /* Set window manager stuff: */
 458
 459   SDL_WM_SetCaption("Super Tux", "Super Tux");
 460
 461 }
 462
 463 void st_video_setup_sdl(void)
 464 {
 465   SDL_FreeSurface(screen);
 466
 467   if (use_fullscreen == YES)
 468     {
 469       screen = SDL_SetVideoMode(640, 480, 16, SDL_FULLSCREEN ) ; /* | SDL_HWSURFACE); */
 470       if (screen == NULL)
 471         {
 472           fprintf(stderr,
 473                   "\nWarning: I could not set up fullscreen video for "
 474                   "640x480 mode.\n"
 475                   "The Simple DirectMedia error that occured was:\n"
 476                   "%s\n\n", SDL_GetError());
 477           use_fullscreen = NO;
 478         }
 479     }
 480   else
 481     {
 482       screen = SDL_SetVideoMode(640, 480, 16, SDL_HWSURFACE | SDL_DOUBLEBUF );
 483
 484       if (screen == NULL)
 485         {
 486           fprintf(stderr,
 487                   "\nError: I could not set up video for 640x480 mode.\n"
 488                   "The Simple DirectMedia error that occured was:\n"
 489                   "%s\n\n", SDL_GetError());
 490           exit(1);
 491         }
 492     }
 493 }
 494
 495 void st_video_setup_gl(void)
 496 {
 497 #ifndef NOOPENGL
 498
 499   SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
 500   SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
 501   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
 502   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 503   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 504
 505   if (use_fullscreen == YES)
 506     {
 507       screen = SDL_SetVideoMode(640, 480, 32, SDL_FULLSCREEN | SDL_OPENGL) ; /* | SDL_HWSURFACE); */
 508       if (screen == NULL)
 509         {
 510           fprintf(stderr,
 511                   "\nWarning: I could not set up fullscreen video for "
 512                   "640x480 mode.\n"
 513                   "The Simple DirectMedia error that occured was:\n"
 514                   "%s\n\n", SDL_GetError());
 515           use_fullscreen = NO;
 516         }
 517     }
 518   else
 519     {
 520       screen = SDL_SetVideoMode(640, 480, 32, SDL_OPENGL);
 521
 522       if (screen == NULL)
 523         {
 524           fprintf(stderr,
 525                   "\nError: I could not set up video for 640x480 mode.\n"
 526                   "The Simple DirectMedia error that occured was:\n"
 527                   "%s\n\n", SDL_GetError());
 528           exit(1);
 529         }
 530     }
 531
 532   /*
 533    * Set up OpenGL for 2D rendering.
 534    */
 535   glDisable(GL_DEPTH_TEST);
 536   glDisable(GL_CULL_FACE);
 537
 538   glViewport(0, 0, screen->w, screen->h);
 539   glMatrixMode(GL_PROJECTION);
 540   glLoadIdentity();
 541   glOrtho(0, screen->w, screen->h, 0, -1.0, 1.0);
 542
 543   glMatrixMode(GL_MODELVIEW);
 544   glLoadIdentity();
 545   glTranslatef(0.0f, 0.0f, 0.0f);
 546
 547 #endif
 548
 549 }
 550
 551 void st_joystick_setup(void)
 552 {
 553
 554   /* Init Joystick: */
 555
 556 #ifdef JOY_YES
 557   use_joystick = YES;
 558
 559   if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
 560     {
 561       fprintf(stderr, "Warning: I could not initialize joystick!\n"
 562               "The Simple DirectMedia error that occured was:\n"
 563               "%s\n\n", SDL_GetError());
 564
 565       use_joystick = NO;
 566     }
 567   else
 568     {
 569       /* Open joystick: */
 570
 571       if (SDL_NumJoysticks() <= 0)
 572         {
 573           fprintf(stderr, "Warning: No joysticks are available.\n");
 574
 575           use_joystick = NO;
 576         }
 577       else
 578         {
 579           js = SDL_JoystickOpen(0);
 580
 581           if (js == NULL)
 582             {
 583               fprintf(stderr, "Warning: Could not open joystick 1.\n"
 584                       "The Simple DirectMedia error that occured was:\n"
 585                       "%s\n\n", SDL_GetError());
 586
 587               use_joystick = NO;
 588             }
 589           else
 590             {
 591               /* Check for proper joystick configuration: */
 592
 593               if (SDL_JoystickNumAxes(js) < 2)
 594                 {
 595                   fprintf(stderr,
 596                           "Warning: Joystick does not have enough axes!\n");
 597
 598                   use_joystick = NO;
 599                 }
 600               else
 601                 {
 602                   if (SDL_JoystickNumButtons(js) < 2)
 603                     {
 604                       fprintf(stderr,
 605                               "Warning: "
 606                               "Joystick does not have enough buttons!\n");
 607
 608                       use_joystick = NO;
 609                     }
 610                 }
 611             }
 612         }
 613     }
 614 #endif
 615
 616 }
 617
 618 void st_audio_setup(void)
 619 {
 620
 621   /* Init SDL Audio silently even if --disable-sound : */
 622
 623   if (audio_device == YES)
 624     {
 625       if (SDL_Init(SDL_INIT_AUDIO) < 0)
 626         {
 627           /* only print out message if sound or music
 628              was not disabled at command-line
 629            */
 630           if (use_sound == YES || use_music == YES)
 631             {
 632               fprintf(stderr,
 633                       "\nWarning: I could not initialize audio!\n"
 634                       "The Simple DirectMedia error that occured was:\n"
 635                       "%s\n\n", SDL_GetError());
 636             }
 637           /* keep the programming logic the same :-)
 638              because in this case, use_sound & use_music' values are ignored
 639              when there's no available audio device
 640           */
 641           use_sound = NO;
 642           use_music = NO;
 643           audio_device = NO;
 644         }
 645     }
 646
 647
 648   /* Open sound silently regarless the value of "use_sound": */
 649
 650   if (audio_device == YES)
 651     {
 652       if (open_audio(44100, AUDIO_S16, 2, 2048) < 0)
 653         {
 654           /* only print out message if sound or music
 655              was not disabled at command-line
 656            */
 657           if ((use_sound == YES) || (use_music == YES))
 658             {
 659               fprintf(stderr,
 660                       "\nWarning: I could not set up audio for 44100 Hz "
 661                       "16-bit stereo.\n"
 662                       "The Simple DirectMedia error that occured was:\n"
 663                       "%s\n\n", SDL_GetError());
 664             }
 665           use_sound = NO;
 666           use_music = NO;
 667           audio_device = NO;
 668         }
 669     }
 670
 671 }
 672
 673
 674 /* --- SHUTDOWN --- */
 675
 676 void st_shutdown(void)
 677 {
 678   close_audio();
 679   SDL_Quit();
 680 }
 681
 682
 683 /* --- ABORT! --- */
 684
 685 void st_abort(char * reason, char * details)
 686 {
 687   fprintf(stderr, "\nError: %s\n%s\n\n", reason, details);
 688   st_shutdown();
 689   exit(1);
 690 }
 691
 692
 693 /* Set Icon (private) */
 694
 695 void seticon(void)
 696 {
 697   int masklen;
 698   Uint8 * mask;
 699   SDL_Surface * icon;
 700
 701
 702   /* Load icon into a surface: */
 703
 704   icon = IMG_Load(DATA_PREFIX "/images/icon.png");
 705   if (icon == NULL)
 706     {
 707       fprintf(stderr,
 708               "\nError: I could not load the icon image: %s\n"
 709               "The Simple DirectMedia error that occured was:\n"
 710               "%s\n\n", DATA_PREFIX "images/icon.png", SDL_GetError());
 711       exit(1);
 712     }
 713
 714
 715   /* Create mask: */
 716
 717   masklen = (((icon -> w) + 7) / 8) * (icon -> h);
 718   mask = (Uint8*) malloc(masklen * sizeof(Uint8));
 719   memset(mask, 0xFF, masklen);
 720
 721
 722   /* Set icon: */
 723
 724   SDL_WM_SetIcon(icon, mask);
 725
 726
 727   /* Free icon surface & mask: */
 728
 729   free(mask);
 730   SDL_FreeSurface(icon);
 731 }
 732
 733
 734 /* Parse command-line arguments: */
 735
 736 void parseargs(int argc, char * argv[])
 737 {
 738   int i;
 739
 740   /* Set defaults: */
 741
 742
 743   debug_mode = NO;
 744   use_fullscreen = NO;
 745   show_fps = NO;
 746   use_gl = NO;
 747
 748 #ifndef NOSOUND
 749
 750   use_sound = YES;
 751   use_music = YES;
 752   audio_device = YES;
 753 #else
 754
 755   use_sound = NO;
 756   use_music = NO;
 757   audio_device = NO;
 758 #endif
 759
 760   /* Parse arguments: */
 761
 762   for (i = 1; i < argc; i++)
 763     {
 764       if (strcmp(argv[i], "--fullscreen") == 0 ||
 765           strcmp(argv[i], "-f") == 0)
 766         {
 767           /* Use full screen: */
 768
 769           use_fullscreen = YES;
 770         }
 771       else if (strcmp(argv[i], "--show-fps") == 0)
 772         {
 773           /* Use full screen: */
 774
 775           show_fps = YES;
 776         }
 777       else if (strcmp(argv[i], "--opengl") == 0 ||
 778                strcmp(argv[i], "-gl") == 0)
 779         {
 780 #ifndef NOOPENGL
 781           /* Use OpengGL: */
 782
 783           use_gl = YES;
 784 #endif
 785
 786         }
 787       else if (strcmp(argv[i], "--usage") == 0)
 788         {
 789           /* Show usage: */
 790
 791           usage(argv[0], 0);
 792         }
 793       else if (strcmp(argv[i], "--version") == 0)
 794         {
 795           /* Show version: */
 796
 797           printf("Super Tux - version " VERSION "\n");
 798           exit(0);
 799         }
 800       else if (strcmp(argv[i], "--disable-sound") == 0)
 801         {
 802           /* Disable the compiled in sound feature */
 803 #ifndef NOSOUND
 804           printf("Sounds disabled \n");
 805           use_sound = NO;
 806 #else
 807
 808           printf("Warning: Sounds feature is not compiled in \n");
 809 #endif
 810
 811         }
 812       else if (strcmp(argv[i], "--disable-music") == 0)
 813         {
 814           /* Disable the compiled in sound feature */
 815 #ifndef NOSOUND
 816           printf("Music disabled \n");
 817           use_music = NO;
 818 #else
 819
 820           printf("Warning: Music feature is not compiled in \n");
 821 #endif
 822
 823         }
 824       else if (strcmp(argv[i], "--debug-mode") == 0)
 825         {
 826           /* Enable the debug-mode */
 827           debug_mode = YES;
 828
 829         }
 830       else if (strcmp(argv[i], "--help") == 0)
 831         {         /* Show help: */
 832
 833           printf("Super Tux " VERSION "\n\n");
 834
 835           printf("----------  Command-line options  ----------\n\n");
 836
 837           printf("  --opengl            - If opengl support was compiled in, this will enable the EXPERIMENTAL OpenGL mode.\n\n");
 838
 839           printf("  --disable-sound     - If sound support was compiled in,  this will\n                        disable sound for this session of the game.\n\n");
 840
 841           printf("  --disable-music     - Like above, but this will disable music.\n\n");
 842
 843           printf("  --fullscreen        - Run in fullscreen mode.\n\n");
 844
 845           printf("  --debug-mode        - Enables the debug-mode, which is useful for developers.\n\n");
 846
 847           printf("  --help              - Display a help message summarizing command-line\n                        options, license and game controls.\n\n");
 848
 849           printf("  --usage             - Display a brief message summarizing command-line options.\n\n");
 850
 851           printf("  --version           - Display the version of SuperTux you're running.\n\n\n");
 852
 853
 854           printf("----------          License       ----------\n\n");
 855           printf("  This program comes with ABSOLUTELY NO WARRANTY.\n");
 856           printf("  This is free software, and you are welcome to redistribute\n");
 857           printf("  or modify it under certain conditions. See the file \n");
 858           printf("  \"COPYING.txt\" for more details.\n\n\n");
 859
 860           printf("----------      Game controls     ----------\n\n");
 861           printf("  Please see the file \"README.txt\"\n\n");
 862
 863           exit(0);
 864         }
 865       else
 866         {
 867           /* Unknown - complain! */
 868
 869           usage(argv[0], 1);
 870         }
 871     }
 872 }
 873
 874
 875 /* Display usage: */
 876
 877 void usage(char * prog, int ret)
 878 {
 879   FILE * fi;
 880
 881
 882   /* Determine which stream to write to: */
 883
 884   if (ret == 0)
 885     fi = stdout;
 886   else
 887     fi = stderr;
 888
 889
 890   /* Display the usage message: */
 891
 892   fprintf(fi, "Usage: %s [--fullscreen] [--opengl] [--disable-sound] [--disable-music] [--debug-mode] | [--usage | --help | --version]\n",
 893           prog);
 894
 895
 896   /* Quit! */
 897
 898   exit(ret);
 899 }
 900