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
 364   main_menu->set_pos(screen->w/2, 335);
 365   main_menu->additem(MN_GOTO, "Start Game",0,load_game_menu);
 366   main_menu->additem(MN_GOTO, "Contrib Levels",0,contrib_menu);
 367   main_menu->additem(MN_GOTO, "Options",0,options_menu);
 368   main_menu->additem(MN_ACTION,"Level editor",0,0);
 369   main_menu->additem(MN_ACTION,"Credits",0,0);
 370   main_menu->additem(MN_ACTION,"Quit",0,0);
 371
 372   contrib_menu->additem(MN_LABEL,"Contrib Levels",0,0);
 373   contrib_menu->additem(MN_HL,"",0,0);
 374   contrib_menu->additem(MN_ACTION, "Some Levelset", 0, 0);
 375   contrib_menu->additem(MN_ACTION, "Someother Levelset", 0, 0);
 376   contrib_menu->additem(MN_ACTION, "Yet another Levelset", 0, 0);
 377   contrib_menu->additem(MN_HL,"",0,0);
 378   contrib_menu->additem(MN_BACK,"Back",0,0);
 379
 380   options_menu->additem(MN_LABEL,"Options",0,0);
 381   options_menu->additem(MN_HL,"",0,0);
 382   options_menu->additem(MN_TOGGLE,"Fullscreen",use_fullscreen,0);
 383   if(audio_device)
 384     {
 385       options_menu->additem(MN_TOGGLE,"Sound     ",use_sound,0);
 386       options_menu->additem(MN_TOGGLE,"Music     ",use_music,0);
 387     }
 388   else
 389     {
 390       options_menu->additem(MN_DEACTIVE,"Sound     ",use_sound,0);
 391       options_menu->additem(MN_DEACTIVE,"Music     ",use_music,0);
 392     }
 393   options_menu->additem(MN_TOGGLE,"Show FPS  ",show_fps,0);
 394   options_menu->additem(MN_GOTO,"Controls  ",0,options_controls_menu);
 395   options_menu->additem(MN_HL,"",0,0);
 396   options_menu->additem(MN_BACK,"Back",0,0);
 397
 398   options_controls_menu->additem(MN_LABEL,"Controls",0,0);
 399   options_controls_menu->additem(MN_HL,"",0,0);
 400   options_controls_menu->additem(MN_CONTROLFIELD,"Move Right",tux.keymap.right,0);
 401   options_controls_menu->additem(MN_HL,"",0,0);
 402   options_controls_menu->additem(MN_BACK,"Back",0,0);
 403
 404   load_game_menu->additem(MN_LABEL,"Start Game",0,0);
 405   load_game_menu->additem(MN_HL,"",0,0);
 406   load_game_menu->additem(MN_DEACTIVE,"Slot 1",0,0);
 407   load_game_menu->additem(MN_DEACTIVE,"Slot 2",0,0);
 408   load_game_menu->additem(MN_DEACTIVE,"Slot 3",0,0);
 409   load_game_menu->additem(MN_DEACTIVE,"Slot 4",0,0);
 410   load_game_menu->additem(MN_DEACTIVE,"Slot 5",0,0);
 411   load_game_menu->additem(MN_HL,"",0,0);
 412   load_game_menu->additem(MN_BACK,"Back",0,0);
 413
 414   save_game_menu->additem(MN_LABEL,"Save Game",0,0);
 415   save_game_menu->additem(MN_HL,"",0,0);
 416   save_game_menu->additem(MN_DEACTIVE,"Slot 1",0,0);
 417   save_game_menu->additem(MN_DEACTIVE,"Slot 2",0,0);
 418   save_game_menu->additem(MN_DEACTIVE,"Slot 3",0,0);
 419   save_game_menu->additem(MN_DEACTIVE,"Slot 4",0,0);
 420   save_game_menu->additem(MN_DEACTIVE,"Slot 5",0,0);
 421   save_game_menu->additem(MN_HL,"",0,0);
 422   save_game_menu->additem(MN_BACK,"Back",0,0);
 423
 424   game_menu->additem(MN_LABEL,"InGame Menu",0,0);
 425   game_menu->additem(MN_HL,"",0,0);
 426   game_menu->additem(MN_ACTION,"Return To Game",0,0);
 427   game_menu->additem(MN_GOTO,"Save Game",0,save_game_menu);
 428   game_menu->additem(MN_GOTO,"Load Game",0,load_game_menu);
 429   game_menu->additem(MN_GOTO,"Options",0,options_menu);
 430   game_menu->additem(MN_HL,"",0,0);
 431   game_menu->additem(MN_ACTION,"Quit Game",0,0);
 432
 433   highscore_menu->additem(MN_TEXTFIELD,"Enter your name:",0,0);
 434 }
 435
 436 void update_load_save_game_menu(Menu* pmenu, int load)
 437 {
 438   for(int i = 2; i < 7; ++i)
 439     {
 440       // FIXME: Insert a real savegame struct/class here instead of
 441       // doing string vodoo
 442       std::string tmp = slotinfo(i-1);
 443
 444       if(load && tmp.length() == strlen("Slot X - Free"))
 445         pmenu->item[i].kind = MN_ACTION;
 446       else
 447         pmenu->item[i].kind = MN_ACTION;
 448       menu_item_change_text(&pmenu->item[i], tmp.c_str());
 449     }
 450 }
 451
 452 void process_save_game_menu()
 453 {
 454   int slot = save_game_menu->check();
 455   if (slot != -1)
 456     savegame(slot - 1);
 457 }
 458
 459 bool process_load_game_menu()
 460 {
 461   int slot = load_game_menu->check();
 462
 463   if(slot != -1)
 464     {
 465       // FIXME: Insert a real savegame struct/class here instead of
 466       // doing string vodoo
 467       std::string tmp = slotinfo(slot-1);
 468       if (tmp.length() == strlen("Slot X - Free"))
 469         {
 470           gameloop("default", 1, ST_GL_PLAY);
 471           show_menu = true;
 472           Menu::set_current(main_menu);
 473         }
 474       else
 475         {
 476           if (game_started)
 477             {
 478               gameloop("default",slot - 1,ST_GL_LOAD_GAME);
 479               show_menu = true;
 480               Menu::set_current(main_menu);
 481             }
 482           else
 483             {
 484               loadgame(slot - 1);
 485             }
 486         }
 487       st_pause_ticks_stop();
 488       return true;
 489     }
 490   else
 491     {
 492       return false;
 493     }
 494 }
 495
 496 /* Handle changes made to global settings in the options menu. */
 497 void process_options_menu(void)
 498 {
 499   switch (options_menu->check())
 500     {
 501     case 2:
 502       if(use_fullscreen != options_menu->item[2].toggled)
 503         {
 504           use_fullscreen = !use_fullscreen;
 505           st_video_setup();
 506         }
 507       break;
 508     case 3:
 509       if(use_sound != options_menu->item[3].toggled)
 510         use_sound = !use_sound;
 511       break;
 512     case 4:
 513       if(use_music != options_menu->item[4].toggled)
 514         {
 515           if(use_music)
 516             {
 517               if(playing_music())
 518                 {
 519                   halt_music();
 520                 }
 521               use_music = false;
 522             }
 523           else
 524             {
 525               use_music = true;
 526               if (!playing_music())
 527                 {
 528                   play_current_music();
 529                 }
 530             }
 531         }
 532       break;
 533     case 5:
 534       if(show_fps != options_menu->item[5].toggled)
 535         show_fps = !show_fps;
 536       break;
 537     }
 538 }
 539
 540 void st_general_setup(void)
 541 {
 542   /* Seed random number generator: */
 543
 544   srand(SDL_GetTicks());
 545
 546   /* Set icon image: */
 547
 548   seticon();
 549
 550   /* Unicode needed for input handling: */
 551
 552   SDL_EnableUNICODE(1);
 553
 554   /* Load global images: */
 555
 556   text_load(&black_text, datadir + "/images/status/letters-black.png", TEXT_TEXT, 16,18);
 557   text_load(&gold_text,datadir + "/images/status/letters-gold.png", TEXT_TEXT, 16,18);
 558   text_load(&blue_text,datadir + "/images/status/letters-blue.png", TEXT_TEXT, 16,18);
 559   text_load(&red_text,datadir + "/images/status/letters-red.png", TEXT_TEXT, 16,18);
 560   text_load(&white_text,datadir + "/images/status/letters-white.png", TEXT_TEXT, 16,18);
 561   text_load(&white_small_text,datadir + "/images/status/letters-white-small.png", TEXT_TEXT, 8,9);
 562   text_load(&white_big_text,datadir + "/images/status/letters-white-big.png", TEXT_TEXT, 20,23);
 563   text_load(&yellow_nums,datadir + "/images/status/numbers.png", TEXT_NUM, 32,32);
 564
 565   /* Load GUI/menu images: */
 566   texture_load(&checkbox, datadir + "/images/status/checkbox.png", USE_ALPHA);
 567   texture_load(&checkbox_checked, datadir + "/images/status/checkbox-checked.png", USE_ALPHA);
 568   texture_load(&back, datadir + "/images/status/back.png", USE_ALPHA);
 569   texture_load(&arrow_left, datadir + "/images/icons/left.png", USE_ALPHA);
 570   texture_load(&arrow_right, datadir + "/images/icons/right.png", USE_ALPHA);
 571
 572   /* Load the mouse-cursor */
 573   mouse_cursor = new MouseCursor( datadir + "/images/status/mousecursor.png",1);
 574
 575 }
 576
 577 void st_general_free(void)
 578 {
 579
 580   /* Free global images: */
 581
 582   text_free(&black_text);
 583   text_free(&gold_text);
 584   text_free(&white_text);
 585   text_free(&blue_text);
 586   text_free(&red_text);
 587   text_free(&white_small_text);
 588   text_free(&white_big_text);
 589
 590   /* Free GUI/menu images: */
 591   texture_free(&checkbox);
 592   texture_free(&checkbox_checked);
 593   texture_free(&back);
 594   texture_free(&arrow_left);
 595   texture_free(&arrow_right);
 596
 597   /* Free mouse-cursor */
 598   delete mouse_cursor;
 599
 600   /* Free menus */
 601   delete main_menu;
 602   delete game_menu;
 603   delete options_menu;
 604   delete highscore_menu;
 605   delete save_game_menu;
 606   delete load_game_menu;
 607 }
 608
 609 void st_video_setup(void)
 610 {
 611
 612   if(screen != NULL)
 613     SDL_FreeSurface(screen);
 614
 615   /* Init SDL Video: */
 616
 617   if (SDL_Init(SDL_INIT_VIDEO) < 0)
 618     {
 619       fprintf(stderr,
 620               "\nError: I could not initialize video!\n"
 621               "The Simple DirectMedia error that occured was:\n"
 622               "%s\n\n", SDL_GetError());
 623       exit(1);
 624     }
 625
 626   /* Open display: */
 627
 628   if(use_gl)
 629     st_video_setup_gl();
 630   else
 631     st_video_setup_sdl();
 632
 633   texture_setup();
 634
 635   /* Set window manager stuff: */
 636
 637   SDL_WM_SetCaption("SuperTux " VERSION, "SuperTux");
 638
 639 }
 640
 641 void st_video_setup_sdl(void)
 642 {
 643   SDL_FreeSurface(screen);
 644
 645   if (use_fullscreen)
 646     {
 647       screen = SDL_SetVideoMode(640, 480, 0, SDL_FULLSCREEN ) ; /* | SDL_HWSURFACE); */
 648       if (screen == NULL)
 649         {
 650           fprintf(stderr,
 651                   "\nWarning: I could not set up fullscreen video for "
 652                   "640x480 mode.\n"
 653                   "The Simple DirectMedia error that occured was:\n"
 654                   "%s\n\n", SDL_GetError());
 655           use_fullscreen = false;
 656         }
 657     }
 658   else
 659     {
 660       screen = SDL_SetVideoMode(640, 480, 0, SDL_HWSURFACE | SDL_DOUBLEBUF );
 661
 662       if (screen == NULL)
 663         {
 664           fprintf(stderr,
 665                   "\nError: I could not set up video for 640x480 mode.\n"
 666                   "The Simple DirectMedia error that occured was:\n"
 667                   "%s\n\n", SDL_GetError());
 668           exit(1);
 669         }
 670     }
 671 }
 672
 673 void st_video_setup_gl(void)
 674 {
 675 #ifndef NOOPENGL
 676
 677   SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
 678   SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
 679   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
 680   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 681   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 682
 683   if (use_fullscreen)
 684     {
 685       screen = SDL_SetVideoMode(640, 480, 0, SDL_FULLSCREEN | SDL_OPENGL) ; /* | SDL_HWSURFACE); */
 686       if (screen == NULL)
 687         {
 688           fprintf(stderr,
 689                   "\nWarning: I could not set up fullscreen video for "
 690                   "640x480 mode.\n"
 691                   "The Simple DirectMedia error that occured was:\n"
 692                   "%s\n\n", SDL_GetError());
 693           use_fullscreen = false;
 694         }
 695     }
 696   else
 697     {
 698       screen = SDL_SetVideoMode(640, 480, 0, SDL_OPENGL);
 699
 700       if (screen == NULL)
 701         {
 702           fprintf(stderr,
 703                   "\nError: I could not set up video for 640x480 mode.\n"
 704                   "The Simple DirectMedia error that occured was:\n"
 705                   "%s\n\n", SDL_GetError());
 706           exit(1);
 707         }
 708     }
 709
 710   /*
 711    * Set up OpenGL for 2D rendering.
 712    */
 713   glDisable(GL_DEPTH_TEST);
 714   glDisable(GL_CULL_FACE);
 715
 716   glViewport(0, 0, screen->w, screen->h);
 717   glMatrixMode(GL_PROJECTION);
 718   glLoadIdentity();
 719   glOrtho(0, screen->w, screen->h, 0, -1.0, 1.0);
 720
 721   glMatrixMode(GL_MODELVIEW);
 722   glLoadIdentity();
 723   glTranslatef(0.0f, 0.0f, 0.0f);
 724
 725 #endif
 726
 727 }
 728
 729 void st_joystick_setup(void)
 730 {
 731
 732   /* Init Joystick: */
 733
 734   use_joystick = true;
 735
 736   if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
 737     {
 738       fprintf(stderr, "Warning: I could not initialize joystick!\n"
 739               "The Simple DirectMedia error that occured was:\n"
 740               "%s\n\n", SDL_GetError());
 741
 742       use_joystick = false;
 743     }
 744   else
 745     {
 746       /* Open joystick: */
 747       if (SDL_NumJoysticks() <= 0)
 748         {
 749           fprintf(stderr, "Warning: No joysticks are available.\n");
 750
 751           use_joystick = false;
 752         }
 753       else
 754         {
 755           js = SDL_JoystickOpen(joystick_num);
 756
 757           if (js == NULL)
 758             {
 759               fprintf(stderr, "Warning: Could not open joystick %d.\n"
 760                       "The Simple DirectMedia error that occured was:\n"
 761                       "%s\n\n", joystick_num, SDL_GetError());
 762
 763               use_joystick = false;
 764             }
 765           else
 766             {
 767               /* Check for proper joystick configuration: */
 768
 769               if (SDL_JoystickNumAxes(js) < 2)
 770                 {
 771                   fprintf(stderr,
 772                           "Warning: Joystick does not have enough axes!\n");
 773
 774                   use_joystick = false;
 775                 }
 776               else
 777                 {
 778                   if (SDL_JoystickNumButtons(js) < 2)
 779                     {
 780                       fprintf(stderr,
 781                               "Warning: "
 782                               "Joystick does not have enough buttons!\n");
 783
 784                       use_joystick = false;
 785                     }
 786                 }
 787             }
 788         }
 789     }
 790 }
 791
 792 void st_audio_setup(void)
 793 {
 794
 795   /* Init SDL Audio silently even if --disable-sound : */
 796
 797   if (audio_device)
 798     {
 799       if (SDL_Init(SDL_INIT_AUDIO) < 0)
 800         {
 801           /* only print out message if sound or music
 802              was not disabled at command-line
 803            */
 804           if (use_sound || use_music)
 805             {
 806               fprintf(stderr,
 807                       "\nWarning: I could not initialize audio!\n"
 808                       "The Simple DirectMedia error that occured was:\n"
 809                       "%s\n\n", SDL_GetError());
 810             }
 811           /* keep the programming logic the same :-)
 812              because in this case, use_sound & use_music' values are ignored
 813              when there's no available audio device
 814           */
 815           use_sound = false;
 816           use_music = false;
 817           audio_device = false;
 818         }
 819     }
 820
 821
 822   /* Open sound silently regarless the value of "use_sound": */
 823
 824   if (audio_device)
 825     {
 826       if (open_audio(44100, AUDIO_S16, 2, 2048) < 0)
 827         {
 828           /* only print out message if sound or music
 829              was not disabled at command-line
 830            */
 831           if (use_sound || use_music)
 832             {
 833               fprintf(stderr,
 834                       "\nWarning: I could not set up audio for 44100 Hz "
 835                       "16-bit stereo.\n"
 836                       "The Simple DirectMedia error that occured was:\n"
 837                       "%s\n\n", SDL_GetError());
 838             }
 839           use_sound = false;
 840           use_music = false;
 841           audio_device = false;
 842         }
 843     }
 844
 845 }
 846
 847
 848 /* --- SHUTDOWN --- */
 849
 850 void st_shutdown(void)
 851 {
 852   close_audio();
 853   SDL_Quit();
 854   saveconfig();
 855 }
 856
 857 /* --- ABORT! --- */
 858
 859 void st_abort(const std::string& reason, const std::string& details)
 860 {
 861   fprintf(stderr, "\nError: %s\n%s\n\n", reason.c_str(), details.c_str());
 862   st_shutdown();
 863   abort();
 864 }
 865
 866
 867 /* Set Icon (private) */
 868
 869 void seticon(void)
 870 {
 871   int masklen;
 872   Uint8 * mask;
 873   SDL_Surface * icon;
 874
 875
 876   /* Load icon into a surface: */
 877
 878   icon = IMG_Load((datadir + "/images/icon.png").c_str());
 879   if (icon == NULL)
 880     {
 881       fprintf(stderr,
 882               "\nError: I could not load the icon image: %s%s\n"
 883               "The Simple DirectMedia error that occured was:\n"
 884               "%s\n\n", datadir.c_str(), "/images/icon.png", SDL_GetError());
 885       exit(1);
 886     }
 887
 888
 889   /* Create mask: */
 890
 891   masklen = (((icon -> w) + 7) / 8) * (icon -> h);
 892   mask = (Uint8*) malloc(masklen * sizeof(Uint8));
 893   memset(mask, 0xFF, masklen);
 894
 895
 896   /* Set icon: */
 897
 898   SDL_WM_SetIcon(icon, mask);
 899
 900
 901   /* Free icon surface & mask: */
 902
 903   free(mask);
 904   SDL_FreeSurface(icon);
 905 }
 906
 907
 908 /* Parse command-line arguments: */
 909
 910 void parseargs(int argc, char * argv[])
 911 {
 912   int i;
 913
 914   loadconfig();
 915
 916   /* Parse arguments: */
 917
 918   for (i = 1; i < argc; i++)
 919     {
 920       if (strcmp(argv[i], "--fullscreen") == 0 ||
 921           strcmp(argv[i], "-f") == 0)
 922         {
 923           /* Use full screen: */
 924
 925           use_fullscreen = true;
 926         }
 927       else if (strcmp(argv[i], "--joystick") == 0 || strcmp(argv[i], "-j") == 0)
 928         {
 929           assert(i+1 < argc);
 930           joystick_num = atoi(argv[++i]);
 931         }
 932       else if (strcmp(argv[i], "--worldmap") == 0)
 933         {
 934           launch_worldmap_mode = true;
 935         }
 936       else if (strcmp(argv[i], "--datadir") == 0
 937                || strcmp(argv[i], "-d") == 0 )
 938         {
 939           assert(i+1 < argc);
 940           datadir = argv[++i];
 941         }
 942       else if (strcmp(argv[i], "--show-fps") == 0)
 943         {
 944           /* Use full screen: */
 945
 946           show_fps = true;
 947         }
 948       else if (strcmp(argv[i], "--opengl") == 0 ||
 949                strcmp(argv[i], "-gl") == 0)
 950         {
 951 #ifndef NOOPENGL
 952           /* Use OpengGL: */
 953
 954           use_gl = true;
 955 #endif
 956         }
 957       else if (strcmp(argv[i], "--sdl") == 0)
 958           {
 959             use_gl = false;
 960           }
 961       else if (strcmp(argv[i], "--usage") == 0)
 962         {
 963           /* Show usage: */
 964
 965           usage(argv[0], 0);
 966         }
 967       else if (strcmp(argv[i], "--version") == 0)
 968         {
 969           /* Show version: */
 970           printf("SuperTux " VERSION "\n");
 971           exit(0);
 972         }
 973       else if (strcmp(argv[i], "--disable-sound") == 0)
 974         {
 975           /* Disable the compiled in sound feature */
 976           printf("Sounds disabled \n");
 977           use_sound = false;
 978         }
 979       else if (strcmp(argv[i], "--disable-music") == 0)
 980         {
 981           /* Disable the compiled in sound feature */
 982           printf("Music disabled \n");
 983           use_music = false;
 984         }
 985       else if (strcmp(argv[i], "--debug-mode") == 0)
 986         {
 987           /* Enable the debug-mode */
 988           debug_mode = true;
 989
 990         }
 991       else if (strcmp(argv[i], "--help") == 0)
 992         {     /* Show help: */
 993           puts("Super Tux " VERSION "\n"
 994                "  Please see the file \"README.txt\" for more details.\n");
 995           printf("Usage: %s [OPTIONS] FILENAME\n\n", argv[0]);
 996           puts("Display Options:\n"
 997                "  --fullscreen        Run in fullscreen mode.\n"
 998                "  --opengl            If opengl support was compiled in, this will enable\n"
 999                "                      the EXPERIMENTAL OpenGL mode.\n"
1000                "  --sdl               Use non-opengl renderer\n"
1001                "\n"
1002                "Sound Options:\n"
1003                "  --disable-sound     If sound support was compiled in,  this will\n"
1004                "                      disable sound for this session of the game.\n"
1005                "  --disable-music     Like above, but this will disable music.\n"
1006                "\n"
1007                "Misc Options:\n"
1008                "  -j, --joystick NUM  Use joystick NUM (default: 0)\n"
1009                "  --worldmap          Start in worldmap-mode (EXPERIMENTAL)\n"
1010                "  -d, --datadir DIR   Load Game data from DIR (default: automatic)\n"
1011                "  --debug-mode        Enables the debug-mode, which is useful for developers.\n"
1012                "  --help              Display a help message summarizing command-line\n"
1013                "                      options, license and game controls.\n"
1014                "  --usage             Display a brief message summarizing command-line options.\n"
1015                "  --version           Display the version of SuperTux you're running.\n\n"
1016                );
1017           exit(0);
1018         }
1019       else if (argv[i][0] != '-')
1020         {
1021           level_startup_file = argv[i];
1022         }
1023       else
1024         {
1025           /* Unknown - complain! */
1026
1027           usage(argv[0], 1);
1028         }
1029     }
1030 }
1031
1032
1033 /* Display usage: */
1034
1035 void usage(char * prog, int ret)
1036 {
1037   FILE * fi;
1038
1039
1040   /* Determine which stream to write to: */
1041
1042   if (ret == 0)
1043     fi = stdout;
1044   else
1045     fi = stderr;
1046
1047
1048   /* Display the usage message: */
1049
1050   fprintf(fi, "Usage: %s [--fullscreen] [--opengl] [--disable-sound] [--disable-music] [--debug-mode] | [--usage | --help | --version] [--worldmap] FILENAME\n",
1051           prog);
1052
1053
1054   /* Quit! */
1055
1056   exit(ret);
1057 }
1058