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