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   //FIXME: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       pmenu->item[i].change_text(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     GameSession::current()->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
 469       if (tmp.length() == strlen("Slot X - Free"))
 470         { // Slot is free, so start a new game
 471           GameSession session("default", 1, ST_GL_PLAY);
 472           session.run();
 473
 474           show_menu = true;
 475           Menu::set_current(main_menu);
 476         }
 477       else
 478         {
 479           puts("Warning: Loading games isn't supported at the moment");
 480 #if 0
 481           // Slot contains a level, so load it
 482           if (game_started)
 483             {
 484               GameSession session("default",slot - 1,ST_GL_LOAD_GAME);
 485               session.run();
 486
 487               show_menu = true;
 488               Menu::set_current(main_menu);
 489             }
 490           else
 491             {
 492               //loadgame(slot - 1);
 493             }
 494 #endif
 495         }
 496       st_pause_ticks_stop();
 497       return true;
 498     }
 499   else
 500     {
 501       return false;
 502     }
 503 }
 504
 505 /* Handle changes made to global settings in the options menu. */
 506 void process_options_menu(void)
 507 {
 508   switch (options_menu->check())
 509     {
 510     case 2:
 511       if(use_fullscreen != options_menu->item[2].toggled)
 512         {
 513           use_fullscreen = !use_fullscreen;
 514           st_video_setup();
 515         }
 516       break;
 517     case 3:
 518       if(use_sound != options_menu->item[3].toggled)
 519         use_sound = !use_sound;
 520       break;
 521     case 4:
 522       if(use_music != options_menu->item[4].toggled)
 523         {
 524           if(use_music)
 525             {
 526               if(playing_music())
 527                 {
 528                   halt_music();
 529                 }
 530               use_music = false;
 531             }
 532           else
 533             {
 534               use_music = true;
 535               if (!playing_music())
 536                 {
 537                   play_current_music();
 538                 }
 539             }
 540         }
 541       break;
 542     case 5:
 543       if(show_fps != options_menu->item[5].toggled)
 544         show_fps = !show_fps;
 545       break;
 546     }
 547 }
 548
 549 void st_general_setup(void)
 550 {
 551   /* Seed random number generator: */
 552
 553   srand(SDL_GetTicks());
 554
 555   /* Set icon image: */
 556
 557   seticon();
 558
 559   /* Unicode needed for input handling: */
 560
 561   SDL_EnableUNICODE(1);
 562
 563   /* Load global images: */
 564
 565   text_load(&black_text, datadir + "/images/status/letters-black.png", TEXT_TEXT, 16,18);
 566   text_load(&gold_text,datadir + "/images/status/letters-gold.png", TEXT_TEXT, 16,18);
 567   text_load(&blue_text,datadir + "/images/status/letters-blue.png", TEXT_TEXT, 16,18);
 568   text_load(&red_text,datadir + "/images/status/letters-red.png", TEXT_TEXT, 16,18);
 569   text_load(&white_text,datadir + "/images/status/letters-white.png", TEXT_TEXT, 16,18);
 570   text_load(&white_small_text,datadir + "/images/status/letters-white-small.png", TEXT_TEXT, 8,9);
 571   text_load(&white_big_text,datadir + "/images/status/letters-white-big.png", TEXT_TEXT, 20,23);
 572   text_load(&yellow_nums,datadir + "/images/status/numbers.png", TEXT_NUM, 32,32);
 573
 574   /* Load GUI/menu images: */
 575   texture_load(&checkbox, datadir + "/images/status/checkbox.png", USE_ALPHA);
 576   texture_load(&checkbox_checked, datadir + "/images/status/checkbox-checked.png", USE_ALPHA);
 577   texture_load(&back, datadir + "/images/status/back.png", USE_ALPHA);
 578   texture_load(&arrow_left, datadir + "/images/icons/left.png", USE_ALPHA);
 579   texture_load(&arrow_right, datadir + "/images/icons/right.png", USE_ALPHA);
 580
 581   /* Load the mouse-cursor */
 582   mouse_cursor = new MouseCursor( datadir + "/images/status/mousecursor.png",1);
 583
 584 }
 585
 586 void st_general_free(void)
 587 {
 588
 589   /* Free global images: */
 590
 591   text_free(&black_text);
 592   text_free(&gold_text);
 593   text_free(&white_text);
 594   text_free(&blue_text);
 595   text_free(&red_text);
 596   text_free(&white_small_text);
 597   text_free(&white_big_text);
 598
 599   /* Free GUI/menu images: */
 600   texture_free(&checkbox);
 601   texture_free(&checkbox_checked);
 602   texture_free(&back);
 603   texture_free(&arrow_left);
 604   texture_free(&arrow_right);
 605
 606   /* Free mouse-cursor */
 607   delete mouse_cursor;
 608
 609   /* Free menus */
 610   delete main_menu;
 611   delete game_menu;
 612   delete options_menu;
 613   delete highscore_menu;
 614   delete save_game_menu;
 615   delete load_game_menu;
 616 }
 617
 618 void st_video_setup(void)
 619 {
 620
 621   if(screen != NULL)
 622     SDL_FreeSurface(screen);
 623
 624   /* Init SDL Video: */
 625
 626   if (SDL_Init(SDL_INIT_VIDEO) < 0)
 627     {
 628       fprintf(stderr,
 629               "\nError: I could not initialize video!\n"
 630               "The Simple DirectMedia error that occured was:\n"
 631               "%s\n\n", SDL_GetError());
 632       exit(1);
 633     }
 634
 635   /* Open display: */
 636
 637   if(use_gl)
 638     st_video_setup_gl();
 639   else
 640     st_video_setup_sdl();
 641
 642   texture_setup();
 643
 644   /* Set window manager stuff: */
 645
 646   SDL_WM_SetCaption("SuperTux " VERSION, "SuperTux");
 647
 648 }
 649
 650 void st_video_setup_sdl(void)
 651 {
 652   SDL_FreeSurface(screen);
 653
 654   if (use_fullscreen)
 655     {
 656       screen = SDL_SetVideoMode(640, 480, 0, SDL_FULLSCREEN ) ; /* | SDL_HWSURFACE); */
 657       if (screen == NULL)
 658         {
 659           fprintf(stderr,
 660                   "\nWarning: I could not set up fullscreen video for "
 661                   "640x480 mode.\n"
 662                   "The Simple DirectMedia error that occured was:\n"
 663                   "%s\n\n", SDL_GetError());
 664           use_fullscreen = false;
 665         }
 666     }
 667   else
 668     {
 669       screen = SDL_SetVideoMode(640, 480, 0, SDL_HWSURFACE | SDL_DOUBLEBUF );
 670
 671       if (screen == NULL)
 672         {
 673           fprintf(stderr,
 674                   "\nError: I could not set up video for 640x480 mode.\n"
 675                   "The Simple DirectMedia error that occured was:\n"
 676                   "%s\n\n", SDL_GetError());
 677           exit(1);
 678         }
 679     }
 680 }
 681
 682 void st_video_setup_gl(void)
 683 {
 684 #ifndef NOOPENGL
 685
 686   SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
 687   SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
 688   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
 689   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 690   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 691
 692   if (use_fullscreen)
 693     {
 694       screen = SDL_SetVideoMode(640, 480, 0, SDL_FULLSCREEN | SDL_OPENGL) ; /* | SDL_HWSURFACE); */
 695       if (screen == NULL)
 696         {
 697           fprintf(stderr,
 698                   "\nWarning: I could not set up fullscreen video for "
 699                   "640x480 mode.\n"
 700                   "The Simple DirectMedia error that occured was:\n"
 701                   "%s\n\n", SDL_GetError());
 702           use_fullscreen = false;
 703         }
 704     }
 705   else
 706     {
 707       screen = SDL_SetVideoMode(640, 480, 0, SDL_OPENGL);
 708
 709       if (screen == NULL)
 710         {
 711           fprintf(stderr,
 712                   "\nError: I could not set up video for 640x480 mode.\n"
 713                   "The Simple DirectMedia error that occured was:\n"
 714                   "%s\n\n", SDL_GetError());
 715           exit(1);
 716         }
 717     }
 718
 719   /*
 720    * Set up OpenGL for 2D rendering.
 721    */
 722   glDisable(GL_DEPTH_TEST);
 723   glDisable(GL_CULL_FACE);
 724
 725   glViewport(0, 0, screen->w, screen->h);
 726   glMatrixMode(GL_PROJECTION);
 727   glLoadIdentity();
 728   glOrtho(0, screen->w, screen->h, 0, -1.0, 1.0);
 729
 730   glMatrixMode(GL_MODELVIEW);
 731   glLoadIdentity();
 732   glTranslatef(0.0f, 0.0f, 0.0f);
 733
 734 #endif
 735
 736 }
 737
 738 void st_joystick_setup(void)
 739 {
 740
 741   /* Init Joystick: */
 742
 743   use_joystick = true;
 744
 745   if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
 746     {
 747       fprintf(stderr, "Warning: I could not initialize joystick!\n"
 748               "The Simple DirectMedia error that occured was:\n"
 749               "%s\n\n", SDL_GetError());
 750
 751       use_joystick = false;
 752     }
 753   else
 754     {
 755       /* Open joystick: */
 756       if (SDL_NumJoysticks() <= 0)
 757         {
 758           fprintf(stderr, "Warning: No joysticks are available.\n");
 759
 760           use_joystick = false;
 761         }
 762       else
 763         {
 764           js = SDL_JoystickOpen(joystick_num);
 765
 766           if (js == NULL)
 767             {
 768               fprintf(stderr, "Warning: Could not open joystick %d.\n"
 769                       "The Simple DirectMedia error that occured was:\n"
 770                       "%s\n\n", joystick_num, SDL_GetError());
 771
 772               use_joystick = false;
 773             }
 774           else
 775             {
 776               /* Check for proper joystick configuration: */
 777
 778               if (SDL_JoystickNumAxes(js) < 2)
 779                 {
 780                   fprintf(stderr,
 781                           "Warning: Joystick does not have enough axes!\n");
 782
 783                   use_joystick = false;
 784                 }
 785               else
 786                 {
 787                   if (SDL_JoystickNumButtons(js) < 2)
 788                     {
 789                       fprintf(stderr,
 790                               "Warning: "
 791                               "Joystick does not have enough buttons!\n");
 792
 793                       use_joystick = false;
 794                     }
 795                 }
 796             }
 797         }
 798     }
 799 }
 800
 801 void st_audio_setup(void)
 802 {
 803
 804   /* Init SDL Audio silently even if --disable-sound : */
 805
 806   if (audio_device)
 807     {
 808       if (SDL_Init(SDL_INIT_AUDIO) < 0)
 809         {
 810           /* only print out message if sound or music
 811              was not disabled at command-line
 812            */
 813           if (use_sound || use_music)
 814             {
 815               fprintf(stderr,
 816                       "\nWarning: I could not initialize audio!\n"
 817                       "The Simple DirectMedia error that occured was:\n"
 818                       "%s\n\n", SDL_GetError());
 819             }
 820           /* keep the programming logic the same :-)
 821              because in this case, use_sound & use_music' values are ignored
 822              when there's no available audio device
 823           */
 824           use_sound = false;
 825           use_music = false;
 826           audio_device = false;
 827         }
 828     }
 829
 830
 831   /* Open sound silently regarless the value of "use_sound": */
 832
 833   if (audio_device)
 834     {
 835       if (open_audio(44100, AUDIO_S16, 2, 2048) < 0)
 836         {
 837           /* only print out message if sound or music
 838              was not disabled at command-line
 839            */
 840           if (use_sound || use_music)
 841             {
 842               fprintf(stderr,
 843                       "\nWarning: I could not set up audio for 44100 Hz "
 844                       "16-bit stereo.\n"
 845                       "The Simple DirectMedia error that occured was:\n"
 846                       "%s\n\n", SDL_GetError());
 847             }
 848           use_sound = false;
 849           use_music = false;
 850           audio_device = false;
 851         }
 852     }
 853
 854 }
 855
 856
 857 /* --- SHUTDOWN --- */
 858
 859 void st_shutdown(void)
 860 {
 861   close_audio();
 862   SDL_Quit();
 863   saveconfig();
 864 }
 865
 866 /* --- ABORT! --- */
 867
 868 void st_abort(const std::string& reason, const std::string& details)
 869 {
 870   fprintf(stderr, "\nError: %s\n%s\n\n", reason.c_str(), details.c_str());
 871   st_shutdown();
 872   abort();
 873 }
 874
 875
 876 /* Set Icon (private) */
 877
 878 void seticon(void)
 879 {
 880   int masklen;
 881   Uint8 * mask;
 882   SDL_Surface * icon;
 883
 884
 885   /* Load icon into a surface: */
 886
 887   icon = IMG_Load((datadir + "/images/icon.png").c_str());
 888   if (icon == NULL)
 889     {
 890       fprintf(stderr,
 891               "\nError: I could not load the icon image: %s%s\n"
 892               "The Simple DirectMedia error that occured was:\n"
 893               "%s\n\n", datadir.c_str(), "/images/icon.png", SDL_GetError());
 894       exit(1);
 895     }
 896
 897
 898   /* Create mask: */
 899
 900   masklen = (((icon -> w) + 7) / 8) * (icon -> h);
 901   mask = (Uint8*) malloc(masklen * sizeof(Uint8));
 902   memset(mask, 0xFF, masklen);
 903
 904
 905   /* Set icon: */
 906
 907   SDL_WM_SetIcon(icon, mask);
 908
 909
 910   /* Free icon surface & mask: */
 911
 912   free(mask);
 913   SDL_FreeSurface(icon);
 914 }
 915
 916
 917 /* Parse command-line arguments: */
 918
 919 void parseargs(int argc, char * argv[])
 920 {
 921   int i;
 922
 923   loadconfig();
 924
 925   /* Parse arguments: */
 926
 927   for (i = 1; i < argc; i++)
 928     {
 929       if (strcmp(argv[i], "--fullscreen") == 0 ||
 930           strcmp(argv[i], "-f") == 0)
 931         {
 932           /* Use full screen: */
 933
 934           use_fullscreen = true;
 935         }
 936       else if (strcmp(argv[i], "--joystick") == 0 || strcmp(argv[i], "-j") == 0)
 937         {
 938           assert(i+1 < argc);
 939           joystick_num = atoi(argv[++i]);
 940         }
 941       else if (strcmp(argv[i], "--worldmap") == 0)
 942         {
 943           launch_worldmap_mode = true;
 944         }
 945       else if (strcmp(argv[i], "--datadir") == 0
 946                || strcmp(argv[i], "-d") == 0 )
 947         {
 948           assert(i+1 < argc);
 949           datadir = argv[++i];
 950         }
 951       else if (strcmp(argv[i], "--show-fps") == 0)
 952         {
 953           /* Use full screen: */
 954
 955           show_fps = true;
 956         }
 957       else if (strcmp(argv[i], "--opengl") == 0 ||
 958                strcmp(argv[i], "-gl") == 0)
 959         {
 960 #ifndef NOOPENGL
 961           /* Use OpengGL: */
 962
 963           use_gl = true;
 964 #endif
 965         }
 966       else if (strcmp(argv[i], "--sdl") == 0)
 967           {
 968             use_gl = false;
 969           }
 970       else if (strcmp(argv[i], "--usage") == 0)
 971         {
 972           /* Show usage: */
 973
 974           usage(argv[0], 0);
 975         }
 976       else if (strcmp(argv[i], "--version") == 0)
 977         {
 978           /* Show version: */
 979           printf("SuperTux " VERSION "\n");
 980           exit(0);
 981         }
 982       else if (strcmp(argv[i], "--disable-sound") == 0)
 983         {
 984           /* Disable the compiled in sound feature */
 985           printf("Sounds disabled \n");
 986           use_sound = false;
 987         }
 988       else if (strcmp(argv[i], "--disable-music") == 0)
 989         {
 990           /* Disable the compiled in sound feature */
 991           printf("Music disabled \n");
 992           use_music = false;
 993         }
 994       else if (strcmp(argv[i], "--debug-mode") == 0)
 995         {
 996           /* Enable the debug-mode */
 997           debug_mode = true;
 998
 999         }
1000       else if (strcmp(argv[i], "--help") == 0)
1001         {     /* Show help: */
1002           puts("Super Tux " VERSION "\n"
1003                "  Please see the file \"README.txt\" for more details.\n");
1004           printf("Usage: %s [OPTIONS] FILENAME\n\n", argv[0]);
1005           puts("Display Options:\n"
1006                "  --fullscreen        Run in fullscreen mode.\n"
1007                "  --opengl            If opengl support was compiled in, this will enable\n"
1008                "                      the EXPERIMENTAL OpenGL mode.\n"
1009                "  --sdl               Use non-opengl renderer\n"
1010                "\n"
1011                "Sound Options:\n"
1012                "  --disable-sound     If sound support was compiled in,  this will\n"
1013                "                      disable sound for this session of the game.\n"
1014                "  --disable-music     Like above, but this will disable music.\n"
1015                "\n"
1016                "Misc Options:\n"
1017                "  -j, --joystick NUM  Use joystick NUM (default: 0)\n"
1018                "  --worldmap          Start in worldmap-mode (EXPERIMENTAL)\n"
1019                "  -d, --datadir DIR   Load Game data from DIR (default: automatic)\n"
1020                "  --debug-mode        Enables the debug-mode, which is useful for developers.\n"
1021                "  --help              Display a help message summarizing command-line\n"
1022                "                      options, license and game controls.\n"
1023                "  --usage             Display a brief message summarizing command-line options.\n"
1024                "  --version           Display the version of SuperTux you're running.\n\n"
1025                );
1026           exit(0);
1027         }
1028       else if (argv[i][0] != '-')
1029         {
1030           level_startup_file = argv[i];
1031         }
1032       else
1033         {
1034           /* Unknown - complain! */
1035
1036           usage(argv[0], 1);
1037         }
1038     }
1039 }
1040
1041
1042 /* Display usage: */
1043
1044 void usage(char * prog, int ret)
1045 {
1046   FILE * fi;
1047
1048
1049   /* Determine which stream to write to: */
1050
1051   if (ret == 0)
1052     fi = stdout;
1053   else
1054     fi = stderr;
1055
1056
1057   /* Display the usage message: */
1058
1059   fprintf(fi, "Usage: %s [--fullscreen] [--opengl] [--disable-sound] [--disable-music] [--debug-mode] | [--usage | --help | --version] [--worldmap] FILENAME\n",
1060           prog);
1061
1062
1063   /* Quit! */
1064
1065   exit(ret);
1066 }
1067