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