src/setup.cpp

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