src/setup.cpp

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