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* expected_file)
 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(expected_file != NULL)
 187                 {
 188                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 189                   if(!faccessible(filename))
 190                     continue;
 191                 }
 192
 193                 string_list_add_item(&sdirs,direntp->d_name);
 194             }
 195         }
 196       closedir(dirStructP);
 197     }
 198
 199   sprintf(path,"%s/%s",DATA_PREFIX,rel_path);
 200   if((dirStructP = opendir(path)) != NULL)
 201     {
 202       while((direntp = readdir(dirStructP)) != NULL)
 203         {
 204           char absolute_filename[1024];
 205           struct stat buf;
 206
 207           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 208
 209           if (stat(absolute_filename, &buf) == 0 && S_ISREG(buf.st_mode))
 210             {
 211               if(expected_file != NULL)
 212                 {
 213                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 214                   if(!faccessible(filename))
 215                     {
 216                       continue;
 217                     }
 218                   else
 219                     {
 220                       sprintf(filename,"%s/%s/%s/%s",st_dir,rel_path,direntp->d_name,expected_file);
 221                       if(faccessible(filename))
 222                         continue;
 223                     }
 224                 }
 225
 226                 string_list_add_item(&sdirs,direntp->d_name);
 227             }
 228         }
 229       closedir(dirStructP);
 230     }
 231
 232   return sdirs;
 233 }
 234
 235 void free_strings(char **strings, int num)
 236 {
 237   int i;
 238   for(i=0; i < num; ++i)
 239     free(strings[i]);
 240 }
 241
 242 /* --- SETUP --- */
 243 /* Set SuperTux configuration and save directories */
 244 void st_directory_setup(void)
 245 {
 246   char *home;
 247   char str[1024];
 248   /* Get home directory (from $HOME variable)... if we can't determine it,
 249      use the current directory ("."): */
 250   if (getenv("HOME") != NULL)
 251     home = getenv("HOME");
 252   else
 253     home = ".";
 254
 255   st_dir = (char *) malloc(sizeof(char) * (strlen(home) +
 256                            strlen("/.supertux") + 1));
 257   strcpy(st_dir, home);
 258   strcat(st_dir, "/.supertux");
 259
 260   st_save_dir = (char *) malloc(sizeof(char) * (strlen(st_dir) + strlen("/save") + 1));
 261
 262   strcpy(st_save_dir,st_dir);
 263   strcat(st_save_dir,"/save");
 264
 265   /* Create them. In the case they exist they won't destroy anything. */
 266 #ifdef LINUX
 267
 268   mkdir(st_dir, 0755);
 269   mkdir(st_save_dir, 0755);
 270
 271   sprintf(str, "%s/levels", st_dir);
 272   mkdir(str, 0755);
 273 #else
 274   #ifdef WIN32
 275
 276   mkdir(st_dir);
 277   mkdir(st_save_dir);
 278   sprintf(str, "%s/levels", st_dir);
 279   mkdir(str);
 280 #endif
 281 #endif
 282
 283 }
 284
 285 /* Create and setup menus. */
 286 void st_menu(void)
 287 {
 288   menu_init(&main_menu);
 289   menu_additem(&main_menu,menu_item_create(MN_LABEL,"Main Menu",0,0));
 290   menu_additem(&main_menu,menu_item_create(MN_HL,"",0,0));
 291   menu_additem(&main_menu,menu_item_create(MN_ACTION,"Start Game",0,0));
 292   menu_additem(&main_menu,menu_item_create(MN_GOTO,"Load Game",0,&load_game_menu));
 293   menu_additem(&main_menu,menu_item_create(MN_GOTO,"Options",0,&options_menu));
 294   menu_additem(&main_menu,menu_item_create(MN_ACTION,"Level editor",0,0));
 295   menu_additem(&main_menu,menu_item_create(MN_HL,"",0,0));
 296   menu_additem(&main_menu,menu_item_create(MN_ACTION,"Quit",0,0));
 297
 298   menu_init(&options_menu);
 299   menu_additem(&options_menu,menu_item_create(MN_LABEL,"Options",0,0));
 300   menu_additem(&options_menu,menu_item_create(MN_HL,"",0,0));
 301   menu_additem(&options_menu,menu_item_create(MN_TOGGLE,"Fullscreen",use_fullscreen,0));
 302   if(audio_device == YES)
 303     {
 304       menu_additem(&options_menu,menu_item_create(MN_TOGGLE,"Sound     ",use_sound,0));
 305       menu_additem(&options_menu,menu_item_create(MN_TOGGLE,"Music     ",use_music,0));
 306     }
 307   else
 308     {
 309       menu_additem(&options_menu,menu_item_create(MN_DEACTIVE,"Sound     ",use_sound,0));
 310       menu_additem(&options_menu,menu_item_create(MN_DEACTIVE,"Music     ",use_music,0));
 311     }
 312   menu_additem(&options_menu,menu_item_create(MN_TOGGLE,"Show FPS  ",show_fps,0));
 313   menu_additem(&options_menu,menu_item_create(MN_HL,"",0,0));
 314   menu_additem(&options_menu,menu_item_create(MN_BACK,"Back",0,0));
 315
 316   menu_init(&load_game_menu);
 317   menu_additem(&load_game_menu,menu_item_create(MN_LABEL,"Load Game",0,0));
 318   menu_additem(&load_game_menu,menu_item_create(MN_HL,"",0,0));
 319   menu_additem(&load_game_menu,menu_item_create(MN_DEACTIVE,"Slot 1",0,0));
 320   menu_additem(&load_game_menu,menu_item_create(MN_DEACTIVE,"Slot 2",0,0));
 321   menu_additem(&load_game_menu,menu_item_create(MN_DEACTIVE,"Slot 3",0,0));
 322   menu_additem(&load_game_menu,menu_item_create(MN_DEACTIVE,"Slot 4",0,0));
 323   menu_additem(&load_game_menu,menu_item_create(MN_DEACTIVE,"Slot 5",0,0));
 324   menu_additem(&load_game_menu,menu_item_create(MN_HL,"",0,0));
 325   menu_additem(&load_game_menu,menu_item_create(MN_BACK,"Back",0,0));
 326
 327   menu_init(&save_game_menu);
 328   menu_additem(&save_game_menu,menu_item_create(MN_LABEL,"Save Game",0,0));
 329   menu_additem(&save_game_menu,menu_item_create(MN_HL,"",0,0));
 330   menu_additem(&save_game_menu,menu_item_create(MN_DEACTIVE,"Slot 1",0,0));
 331   menu_additem(&save_game_menu,menu_item_create(MN_DEACTIVE,"Slot 2",0,0));
 332   menu_additem(&save_game_menu,menu_item_create(MN_DEACTIVE,"Slot 3",0,0));
 333   menu_additem(&save_game_menu,menu_item_create(MN_DEACTIVE,"Slot 4",0,0));
 334   menu_additem(&save_game_menu,menu_item_create(MN_DEACTIVE,"Slot 5",0,0));
 335   menu_additem(&save_game_menu,menu_item_create(MN_HL,"",0,0));
 336   menu_additem(&save_game_menu,menu_item_create(MN_BACK,"Back",0,0));
 337
 338   menu_init(&game_menu);
 339   menu_additem(&game_menu,menu_item_create(MN_LABEL,"InGame Menu",0,0));
 340   menu_additem(&game_menu,menu_item_create(MN_HL,"",0,0));
 341   menu_additem(&game_menu,menu_item_create(MN_ACTION,"Return To Game",0,0));
 342   menu_additem(&game_menu,menu_item_create(MN_GOTO,"Save Game",0,&save_game_menu));
 343   menu_additem(&game_menu,menu_item_create(MN_GOTO,"Load Game",0,&load_game_menu));
 344   menu_additem(&game_menu,menu_item_create(MN_GOTO,"Options",0,&options_menu));
 345   menu_additem(&game_menu,menu_item_create(MN_HL,"",0,0));
 346   menu_additem(&game_menu,menu_item_create(MN_ACTION,"Quit Game",0,0));
 347
 348   menu_init(&highscore_menu);
 349   menu_additem(&highscore_menu,menu_item_create(MN_TEXTFIELD,"Enter your name:",0,0));
 350
 351 }
 352
 353 void update_load_save_game_menu(menu_type* pmenu, int load)
 354 {
 355   int i;
 356
 357   for(i = 2; i < 7; ++i)
 358     {
 359       char *tmp;
 360       slotinfo(&tmp,i-1);
 361       if(load && strlen(tmp) == strlen("Slot X - Free") )
 362         pmenu->item[i].kind = MN_DEACTIVE;
 363       else
 364         pmenu->item[i].kind = MN_ACTION;
 365       menu_item_change_text(&pmenu->item[i],tmp);
 366       free(tmp);
 367     }
 368 }
 369
 370 void process_save_load_game_menu(int save)
 371 {
 372   int slot;
 373   switch (slot = menu_check(save ? &save_game_menu : &load_game_menu))
 374     {
 375     default:
 376       if(slot != -1)
 377         {
 378           if(save == YES)
 379             {
 380               savegame(slot);
 381             }
 382           else
 383             {
 384               if(game_started == NO)
 385                 gameloop("whatever",slot,ST_GL_LOAD_GAME);
 386               else
 387                 loadgame(slot);
 388             }
 389           st_pause_ticks_stop();
 390         }
 391       break;
 392     }
 393 }
 394
 395 /* Handle changes made to global settings in the options menu. */
 396 void process_options_menu(void)
 397 {
 398   switch (menu_check(&options_menu))
 399     {
 400     case 2:
 401       if(use_fullscreen != options_menu.item[2].toggled)
 402         {
 403           use_fullscreen = !use_fullscreen;
 404           st_video_setup();
 405         }
 406       break;
 407     case 3:
 408       if(use_sound != options_menu.item[3].toggled)
 409         use_sound = !use_sound;
 410       break;
 411     case 4:
 412       if(use_music != options_menu.item[4].toggled)
 413         {
 414           if(use_music == YES)
 415             {
 416               if(playing_music())
 417                 {
 418                   halt_music();
 419                 }
 420               use_music = NO;
 421             }
 422           else
 423             {
 424               use_music = YES;
 425               if (!playing_music())
 426                 {
 427                   play_current_music();
 428                 }
 429             }
 430         }
 431       break;
 432     case 5:
 433       if(show_fps != options_menu.item[5].toggled)
 434         show_fps = !show_fps;
 435       break;
 436     }
 437 }
 438
 439 void st_general_setup(void)
 440 {
 441   /* Seed random number generator: */
 442
 443   srand(SDL_GetTicks());
 444
 445   /* Load global images: */
 446
 447   text_load(&black_text,DATA_PREFIX "/images/status/letters-black.png", TEXT_TEXT, 16,18);
 448   text_load(&gold_text,DATA_PREFIX "/images/status/letters-gold.png", TEXT_TEXT, 16,18);
 449   text_load(&blue_text,DATA_PREFIX "/images/status/letters-blue.png", TEXT_TEXT, 16,18);
 450   text_load(&red_text,DATA_PREFIX "/images/status/letters-red.png", TEXT_TEXT, 16,18);
 451   text_load(&white_text,DATA_PREFIX "/images/status/letters-white.png", TEXT_TEXT, 16,18);
 452   text_load(&white_small_text,DATA_PREFIX "/images/status/letters-white-small.png", TEXT_TEXT, 8,9);
 453   text_load(&white_big_text,DATA_PREFIX "/images/status/letters-white-big.png", TEXT_TEXT, 24,27);
 454   text_load(&yellow_nums,DATA_PREFIX "/images/status/numbers.png", TEXT_NUM, 32,32);
 455
 456   /* Load GUI/menu images: */
 457   texture_load(&checkbox, DATA_PREFIX "/images/status/checkbox.png", USE_ALPHA);
 458   texture_load(&checkbox_checked, DATA_PREFIX "/images/status/checkbox-checked.png", USE_ALPHA);
 459   texture_load(&back, DATA_PREFIX "/images/status/back.png", USE_ALPHA);
 460   texture_load(&arrow_left, DATA_PREFIX "/images/icons/left.png", USE_ALPHA);
 461   texture_load(&arrow_right, DATA_PREFIX "/images/icons/right.png", USE_ALPHA);
 462
 463   /* Set icon image: */
 464
 465   seticon();
 466   SDL_EnableUNICODE(1);
 467
 468 }
 469
 470 void st_general_free(void)
 471 {
 472
 473   /* Free global images: */
 474
 475   text_free(&black_text);
 476   text_free(&gold_text);
 477   text_free(&white_text);
 478   text_free(&blue_text);
 479   text_free(&red_text);
 480   text_free(&white_small_text);
 481
 482   /* Free GUI/menu images: */
 483   texture_free(&checkbox);
 484   texture_free(&checkbox_checked);
 485   texture_free(&back);
 486
 487   /* Free menus */
 488
 489   menu_free(&main_menu);
 490   menu_free(&game_menu);
 491   menu_free(&options_menu);
 492   menu_free(&highscore_menu);
 493
 494 }
 495
 496 void st_video_setup(void)
 497 {
 498
 499   if(screen != NULL)
 500     SDL_FreeSurface(screen);
 501
 502   /* Init SDL Video: */
 503
 504   if (SDL_Init(SDL_INIT_VIDEO) < 0)
 505     {
 506       fprintf(stderr,
 507               "\nError: I could not initialize video!\n"
 508               "The Simple DirectMedia error that occured was:\n"
 509               "%s\n\n", SDL_GetError());
 510       exit(1);
 511     }
 512
 513   /* Open display: */
 514
 515   if(use_gl)
 516     st_video_setup_gl();
 517   else
 518     st_video_setup_sdl();
 519
 520   texture_setup();
 521
 522   /* Set window manager stuff: */
 523
 524   SDL_WM_SetCaption("Super Tux", "Super Tux");
 525
 526 }
 527
 528 void st_video_setup_sdl(void)
 529 {
 530   SDL_FreeSurface(screen);
 531
 532   if (use_fullscreen == YES)
 533     {
 534       screen = SDL_SetVideoMode(640, 480, 16, SDL_FULLSCREEN ) ; /* | SDL_HWSURFACE); */
 535       if (screen == NULL)
 536         {
 537           fprintf(stderr,
 538                   "\nWarning: I could not set up fullscreen video for "
 539                   "640x480 mode.\n"
 540                   "The Simple DirectMedia error that occured was:\n"
 541                   "%s\n\n", SDL_GetError());
 542           use_fullscreen = NO;
 543         }
 544     }
 545   else
 546     {
 547       screen = SDL_SetVideoMode(640, 480, 16, SDL_HWSURFACE | SDL_DOUBLEBUF );
 548
 549       if (screen == NULL)
 550         {
 551           fprintf(stderr,
 552                   "\nError: I could not set up video for 640x480 mode.\n"
 553                   "The Simple DirectMedia error that occured was:\n"
 554                   "%s\n\n", SDL_GetError());
 555           exit(1);
 556         }
 557     }
 558 }
 559
 560 void st_video_setup_gl(void)
 561 {
 562 #ifndef NOOPENGL
 563
 564   SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
 565   SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
 566   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
 567   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 568   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 569
 570   if (use_fullscreen == YES)
 571     {
 572       screen = SDL_SetVideoMode(640, 480, 32, SDL_FULLSCREEN | SDL_OPENGL) ; /* | SDL_HWSURFACE); */
 573       if (screen == NULL)
 574         {
 575           fprintf(stderr,
 576                   "\nWarning: I could not set up fullscreen video for "
 577                   "640x480 mode.\n"
 578                   "The Simple DirectMedia error that occured was:\n"
 579                   "%s\n\n", SDL_GetError());
 580           use_fullscreen = NO;
 581         }
 582     }
 583   else
 584     {
 585       screen = SDL_SetVideoMode(640, 480, 32, SDL_OPENGL);
 586
 587       if (screen == NULL)
 588         {
 589           fprintf(stderr,
 590                   "\nError: I could not set up video for 640x480 mode.\n"
 591                   "The Simple DirectMedia error that occured was:\n"
 592                   "%s\n\n", SDL_GetError());
 593           exit(1);
 594         }
 595     }
 596
 597   /*
 598    * Set up OpenGL for 2D rendering.
 599    */
 600   glDisable(GL_DEPTH_TEST);
 601   glDisable(GL_CULL_FACE);
 602
 603   glViewport(0, 0, screen->w, screen->h);
 604   glMatrixMode(GL_PROJECTION);
 605   glLoadIdentity();
 606   glOrtho(0, screen->w, screen->h, 0, -1.0, 1.0);
 607
 608   glMatrixMode(GL_MODELVIEW);
 609   glLoadIdentity();
 610   glTranslatef(0.0f, 0.0f, 0.0f);
 611
 612 #endif
 613
 614 }
 615
 616 void st_joystick_setup(void)
 617 {
 618
 619   /* Init Joystick: */
 620
 621 #ifdef JOY_YES
 622   use_joystick = YES;
 623
 624   if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
 625     {
 626       fprintf(stderr, "Warning: I could not initialize joystick!\n"
 627               "The Simple DirectMedia error that occured was:\n"
 628               "%s\n\n", SDL_GetError());
 629
 630       use_joystick = NO;
 631     }
 632   else
 633     {
 634       /* Open joystick: */
 635
 636       if (SDL_NumJoysticks() <= 0)
 637         {
 638           fprintf(stderr, "Warning: No joysticks are available.\n");
 639
 640           use_joystick = NO;
 641         }
 642       else
 643         {
 644           js = SDL_JoystickOpen(0);
 645
 646           if (js == NULL)
 647             {
 648               fprintf(stderr, "Warning: Could not open joystick 1.\n"
 649                       "The Simple DirectMedia error that occured was:\n"
 650                       "%s\n\n", SDL_GetError());
 651
 652               use_joystick = NO;
 653             }
 654           else
 655             {
 656               /* Check for proper joystick configuration: */
 657
 658               if (SDL_JoystickNumAxes(js) < 2)
 659                 {
 660                   fprintf(stderr,
 661                           "Warning: Joystick does not have enough axes!\n");
 662
 663                   use_joystick = NO;
 664                 }
 665               else
 666                 {
 667                   if (SDL_JoystickNumButtons(js) < 2)
 668                     {
 669                       fprintf(stderr,
 670                               "Warning: "
 671                               "Joystick does not have enough buttons!\n");
 672
 673                       use_joystick = NO;
 674                     }
 675                 }
 676             }
 677         }
 678     }
 679 #endif
 680
 681 }
 682
 683 void st_audio_setup(void)
 684 {
 685
 686   /* Init SDL Audio silently even if --disable-sound : */
 687
 688   if (audio_device == YES)
 689     {
 690       if (SDL_Init(SDL_INIT_AUDIO) < 0)
 691         {
 692           /* only print out message if sound or music
 693              was not disabled at command-line
 694            */
 695           if (use_sound == YES || use_music == YES)
 696             {
 697               fprintf(stderr,
 698                       "\nWarning: I could not initialize audio!\n"
 699                       "The Simple DirectMedia error that occured was:\n"
 700                       "%s\n\n", SDL_GetError());
 701             }
 702           /* keep the programming logic the same :-)
 703              because in this case, use_sound & use_music' values are ignored
 704              when there's no available audio device
 705           */
 706           use_sound = NO;
 707           use_music = NO;
 708           audio_device = NO;
 709         }
 710     }
 711
 712
 713   /* Open sound silently regarless the value of "use_sound": */
 714
 715   if (audio_device == YES)
 716     {
 717       if (open_audio(44100, AUDIO_S16, 2, 2048) < 0)
 718         {
 719           /* only print out message if sound or music
 720              was not disabled at command-line
 721            */
 722           if ((use_sound == YES) || (use_music == YES))
 723             {
 724               fprintf(stderr,
 725                       "\nWarning: I could not set up audio for 44100 Hz "
 726                       "16-bit stereo.\n"
 727                       "The Simple DirectMedia error that occured was:\n"
 728                       "%s\n\n", SDL_GetError());
 729             }
 730           use_sound = NO;
 731           use_music = NO;
 732           audio_device = NO;
 733         }
 734     }
 735
 736 }
 737
 738
 739 /* --- SHUTDOWN --- */
 740
 741 void st_shutdown(void)
 742 {
 743   close_audio();
 744   SDL_Quit();
 745 }
 746
 747
 748 /* --- ABORT! --- */
 749
 750 void st_abort(char * reason, char * details)
 751 {
 752   fprintf(stderr, "\nError: %s\n%s\n\n", reason, details);
 753   st_shutdown();
 754   exit(1);
 755 }
 756
 757
 758 /* Set Icon (private) */
 759
 760 void seticon(void)
 761 {
 762   int masklen;
 763   Uint8 * mask;
 764   SDL_Surface * icon;
 765
 766
 767   /* Load icon into a surface: */
 768
 769   icon = IMG_Load(DATA_PREFIX "/images/icon.png");
 770   if (icon == NULL)
 771     {
 772       fprintf(stderr,
 773               "\nError: I could not load the icon image: %s\n"
 774               "The Simple DirectMedia error that occured was:\n"
 775               "%s\n\n", DATA_PREFIX "images/icon.png", SDL_GetError());
 776       exit(1);
 777     }
 778
 779
 780   /* Create mask: */
 781
 782   masklen = (((icon -> w) + 7) / 8) * (icon -> h);
 783   mask = (Uint8*) malloc(masklen * sizeof(Uint8));
 784   memset(mask, 0xFF, masklen);
 785
 786
 787   /* Set icon: */
 788
 789   SDL_WM_SetIcon(icon, mask);
 790
 791
 792   /* Free icon surface & mask: */
 793
 794   free(mask);
 795   SDL_FreeSurface(icon);
 796 }
 797
 798
 799 /* Parse command-line arguments: */
 800
 801 void parseargs(int argc, char * argv[])
 802 {
 803   int i;
 804
 805   /* Set defaults: */
 806
 807
 808   debug_mode = NO;
 809   use_fullscreen = NO;
 810   show_fps = NO;
 811   use_gl = NO;
 812
 813 #ifndef NOSOUND
 814
 815   use_sound = YES;
 816   use_music = YES;
 817   audio_device = YES;
 818 #else
 819
 820   use_sound = NO;
 821   use_music = NO;
 822   audio_device = NO;
 823 #endif
 824
 825   /* Parse arguments: */
 826
 827   for (i = 1; i < argc; i++)
 828     {
 829       if (strcmp(argv[i], "--fullscreen") == 0 ||
 830           strcmp(argv[i], "-f") == 0)
 831         {
 832           /* Use full screen: */
 833
 834           use_fullscreen = YES;
 835         }
 836       else if (strcmp(argv[i], "--show-fps") == 0)
 837         {
 838           /* Use full screen: */
 839
 840           show_fps = YES;
 841         }
 842       else if (strcmp(argv[i], "--opengl") == 0 ||
 843                strcmp(argv[i], "-gl") == 0)
 844         {
 845 #ifndef NOOPENGL
 846           /* Use OpengGL: */
 847
 848           use_gl = YES;
 849 #endif
 850
 851         }
 852       else if (strcmp(argv[i], "--usage") == 0)
 853         {
 854           /* Show usage: */
 855
 856           usage(argv[0], 0);
 857         }
 858       else if (strcmp(argv[i], "--version") == 0)
 859         {
 860           /* Show version: */
 861
 862           printf("Super Tux - version " VERSION "\n");
 863           exit(0);
 864         }
 865       else if (strcmp(argv[i], "--disable-sound") == 0)
 866         {
 867           /* Disable the compiled in sound feature */
 868 #ifndef NOSOUND
 869           printf("Sounds disabled \n");
 870           use_sound = NO;
 871 #else
 872
 873           printf("Warning: Sounds feature is not compiled in \n");
 874 #endif
 875
 876         }
 877       else if (strcmp(argv[i], "--disable-music") == 0)
 878         {
 879           /* Disable the compiled in sound feature */
 880 #ifndef NOSOUND
 881           printf("Music disabled \n");
 882           use_music = NO;
 883 #else
 884
 885           printf("Warning: Music feature is not compiled in \n");
 886 #endif
 887
 888         }
 889       else if (strcmp(argv[i], "--debug-mode") == 0)
 890         {
 891           /* Enable the debug-mode */
 892           debug_mode = YES;
 893
 894         }
 895       else if (strcmp(argv[i], "--help") == 0)
 896         {         /* Show help: */
 897
 898           printf("Super Tux " VERSION "\n\n");
 899
 900           printf("----------  Command-line options  ----------\n\n");
 901
 902           printf("  --opengl            - If opengl support was compiled in, this will enable the EXPERIMENTAL OpenGL mode.\n\n");
 903
 904           printf("  --disable-sound     - If sound support was compiled in,  this will\n                        disable sound for this session of the game.\n\n");
 905
 906           printf("  --disable-music     - Like above, but this will disable music.\n\n");
 907
 908           printf("  --fullscreen        - Run in fullscreen mode.\n\n");
 909
 910           printf("  --debug-mode        - Enables the debug-mode, which is useful for developers.\n\n");
 911
 912           printf("  --help              - Display a help message summarizing command-line\n                        options, license and game controls.\n\n");
 913
 914           printf("  --usage             - Display a brief message summarizing command-line options.\n\n");
 915
 916           printf("  --version           - Display the version of SuperTux you're running.\n\n\n");
 917
 918
 919           printf("----------          License       ----------\n\n");
 920           printf("  This program comes with ABSOLUTELY NO WARRANTY.\n");
 921           printf("  This is free software, and you are welcome to redistribute\n");
 922           printf("  or modify it under certain conditions. See the file \n");
 923           printf("  \"COPYING.txt\" for more details.\n\n\n");
 924
 925           printf("----------      Game controls     ----------\n\n");
 926           printf("  Please see the file \"README.txt\"\n\n");
 927
 928           exit(0);
 929         }
 930       else
 931         {
 932           /* Unknown - complain! */
 933
 934           usage(argv[0], 1);
 935         }
 936     }
 937 }
 938
 939
 940 /* Display usage: */
 941
 942 void usage(char * prog, int ret)
 943 {
 944   FILE * fi;
 945
 946
 947   /* Determine which stream to write to: */
 948
 949   if (ret == 0)
 950     fi = stdout;
 951   else
 952     fi = stderr;
 953
 954
 955   /* Display the usage message: */
 956
 957   fprintf(fi, "Usage: %s [--fullscreen] [--opengl] [--disable-sound] [--disable-music] [--debug-mode] | [--usage | --help | --version]\n",
 958           prog);
 959
 960
 961   /* Quit! */
 962
 963   exit(ret);
 964 }
 965