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