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   worldmap_menu  = new Menu();
 365
 366   main_menu->set_pos(screen->w/2, 335);
 367   main_menu->additem(MN_GOTO, "Start Game",0,load_game_menu);
 368   main_menu->additem(MN_GOTO, "Contrib Levels",0,contrib_menu);
 369   main_menu->additem(MN_GOTO, "Options",0,options_menu);
 370   main_menu->additem(MN_ACTION,"Level editor",0,0);
 371   main_menu->additem(MN_ACTION,"Credits",0,0);
 372   main_menu->additem(MN_ACTION,"Quit",0,0);
 373
 374   options_menu->additem(MN_LABEL,"Options",0,0);
 375   options_menu->additem(MN_HL,"",0,0);
 376   options_menu->additem(MN_TOGGLE,"Fullscreen",use_fullscreen,0);
 377   if(audio_device)
 378     {
 379       options_menu->additem(MN_TOGGLE,"Sound     ",use_sound,0);
 380       options_menu->additem(MN_TOGGLE,"Music     ",use_music,0);
 381     }
 382   else
 383     {
 384       options_menu->additem(MN_DEACTIVE,"Sound     ",use_sound,0);
 385       options_menu->additem(MN_DEACTIVE,"Music     ",use_music,0);
 386     }
 387   options_menu->additem(MN_TOGGLE,"Show FPS  ",show_fps,0);
 388   options_menu->additem(MN_GOTO,"Controls  ",0,options_controls_menu);
 389   options_menu->additem(MN_HL,"",0,0);
 390   options_menu->additem(MN_BACK,"Back",0,0);
 391
 392   options_controls_menu->additem(MN_LABEL,"Controls",0,0);
 393   options_controls_menu->additem(MN_HL,"",0,0);
 394   //FIXME:options_controls_menu->additem(MN_CONTROLFIELD,"Move Right", tux.keymap.right,0);
 395   options_controls_menu->additem(MN_HL,"",0,0);
 396   options_controls_menu->additem(MN_BACK,"Back",0,0);
 397
 398   load_game_menu->additem(MN_LABEL,"Start Game",0,0);
 399   load_game_menu->additem(MN_HL,"",0,0);
 400   load_game_menu->additem(MN_DEACTIVE,"Slot 1",0,0);
 401   load_game_menu->additem(MN_DEACTIVE,"Slot 2",0,0);
 402   load_game_menu->additem(MN_DEACTIVE,"Slot 3",0,0);
 403   load_game_menu->additem(MN_DEACTIVE,"Slot 4",0,0);
 404   load_game_menu->additem(MN_DEACTIVE,"Slot 5",0,0);
 405   load_game_menu->additem(MN_HL,"",0,0);
 406   load_game_menu->additem(MN_BACK,"Back",0,0);
 407
 408   save_game_menu->additem(MN_LABEL,"Save Game",0,0);
 409   save_game_menu->additem(MN_HL,"",0,0);
 410   save_game_menu->additem(MN_DEACTIVE,"Slot 1",0,0);
 411   save_game_menu->additem(MN_DEACTIVE,"Slot 2",0,0);
 412   save_game_menu->additem(MN_DEACTIVE,"Slot 3",0,0);
 413   save_game_menu->additem(MN_DEACTIVE,"Slot 4",0,0);
 414   save_game_menu->additem(MN_DEACTIVE,"Slot 5",0,0);
 415   save_game_menu->additem(MN_HL,"",0,0);
 416   save_game_menu->additem(MN_BACK,"Back",0,0);
 417
 418   game_menu->additem(MN_LABEL,"InGame Menu",0,0);
 419   game_menu->additem(MN_HL,"",0,0);
 420   game_menu->additem(MN_ACTION,"Return To Game",0,0);
 421   game_menu->additem(MN_GOTO,"Save Game",0,save_game_menu);
 422   game_menu->additem(MN_GOTO,"Load Game",0,load_game_menu);
 423   game_menu->additem(MN_GOTO,"Options",0,options_menu);
 424   game_menu->additem(MN_HL,"",0,0);
 425   game_menu->additem(MN_ACTION,"Quit Game",0,0);
 426
 427   worldmap_menu->additem(MN_LABEL,"Worldmap Menu",0,0);
 428   worldmap_menu->additem(MN_HL,"",0,0);
 429   worldmap_menu->additem(MN_ACTION,"Return To Game",0,0);
 430   worldmap_menu->additem(MN_GOTO,"Options",0,options_menu);
 431   worldmap_menu->additem(MN_HL,"",0,0);
 432   worldmap_menu->additem(MN_ACTION,"Quit Game",0,0);
 433
 434   highscore_menu->additem(MN_TEXTFIELD,"Enter your name:",0,0);
 435 }
 436
 437 void update_load_save_game_menu(Menu* pmenu, int load)
 438 {
 439   for(int i = 2; i < 7; ++i)
 440     {
 441       // FIXME: Insert a real savegame struct/class here instead of
 442       // doing string vodoo
 443       std::string tmp = slotinfo(i-1);
 444
 445       if(load && tmp.length() == strlen("Slot X - Free"))
 446         pmenu->item[i].kind = MN_ACTION;
 447       else
 448         pmenu->item[i].kind = MN_ACTION;
 449       pmenu->item[i].change_text(tmp.c_str());
 450     }
 451 }
 452
 453 void process_save_game_menu()
 454 {
 455   int slot = save_game_menu->check();
 456   if (slot != -1)
 457     GameSession::current()->savegame(slot - 1);
 458 }
 459
 460 bool process_load_game_menu()
 461 {
 462   int slot = load_game_menu->check();
 463
 464   if(slot != -1)
 465     {
 466       // FIXME: Insert a real savegame struct/class here instead of
 467       // doing string vodoo
 468       std::string tmp = slotinfo(slot-1);
 469
 470       if (tmp.length() == strlen("Slot X - Free"))
 471         { // Slot is free, so start a new game
 472           GameSession session("default", 1, ST_GL_PLAY);
 473           session.run();
 474
 475           show_menu = true;
 476           Menu::set_current(main_menu);
 477         }
 478       else
 479         {
 480           puts("Warning: Loading games isn't supported at the moment");
 481 #if 0
 482           // Slot contains a level, so load it
 483           if (game_started)
 484             {
 485               GameSession session("default",slot - 1,ST_GL_LOAD_GAME);
 486               session.run();
 487
 488               show_menu = true;
 489               Menu::set_current(main_menu);
 490             }
 491           else
 492             {
 493               //loadgame(slot - 1);
 494             }
 495 #endif
 496         }
 497       st_pause_ticks_stop();
 498       return true;
 499     }
 500   else
 501     {
 502       return false;
 503     }
 504 }
 505
 506 /* Handle changes made to global settings in the options menu. */
 507 void process_options_menu(void)
 508 {
 509   switch (options_menu->check())
 510     {
 511     case 2:
 512       if(use_fullscreen != options_menu->item[2].toggled)
 513         {
 514           use_fullscreen = !use_fullscreen;
 515           st_video_setup();
 516         }
 517       break;
 518     case 3:
 519       if(use_sound != options_menu->item[3].toggled)
 520         use_sound = !use_sound;
 521       break;
 522     case 4:
 523       if(use_music != options_menu->item[4].toggled)
 524         {
 525           if(use_music)
 526             {
 527               if(playing_music())
 528                 {
 529                   halt_music();
 530                 }
 531               use_music = false;
 532             }
 533           else
 534             {
 535               use_music = true;
 536               if (!playing_music())
 537                 {
 538                   play_current_music();
 539                 }
 540             }
 541         }
 542       break;
 543     case 5:
 544       if(show_fps != options_menu->item[5].toggled)
 545         show_fps = !show_fps;
 546       break;
 547     }
 548 }
 549
 550 void st_general_setup(void)
 551 {
 552   /* Seed random number generator: */
 553
 554   srand(SDL_GetTicks());
 555
 556   /* Set icon image: */
 557
 558   seticon();
 559
 560   /* Unicode needed for input handling: */
 561
 562   SDL_EnableUNICODE(1);
 563
 564   /* Load global images: */
 565
 566   text_load(&black_text, datadir + "/images/status/letters-black.png", TEXT_TEXT, 16,18);
 567   text_load(&gold_text,datadir + "/images/status/letters-gold.png", TEXT_TEXT, 16,18);
 568   text_load(&blue_text,datadir + "/images/status/letters-blue.png", TEXT_TEXT, 16,18);
 569   text_load(&red_text,datadir + "/images/status/letters-red.png", TEXT_TEXT, 16,18);
 570   text_load(&white_text,datadir + "/images/status/letters-white.png", TEXT_TEXT, 16,18);
 571   text_load(&white_small_text,datadir + "/images/status/letters-white-small.png", TEXT_TEXT, 8,9);
 572   text_load(&white_big_text,datadir + "/images/status/letters-white-big.png", TEXT_TEXT, 20,23);
 573   text_load(&yellow_nums,datadir + "/images/status/numbers.png", TEXT_NUM, 32,32);
 574
 575   /* Load GUI/menu images: */
 576   texture_load(&checkbox, datadir + "/images/status/checkbox.png", USE_ALPHA);
 577   texture_load(&checkbox_checked, datadir + "/images/status/checkbox-checked.png", USE_ALPHA);
 578   texture_load(&back, datadir + "/images/status/back.png", USE_ALPHA);
 579   texture_load(&arrow_left, datadir + "/images/icons/left.png", USE_ALPHA);
 580   texture_load(&arrow_right, datadir + "/images/icons/right.png", USE_ALPHA);
 581
 582   /* Load the mouse-cursor */
 583   mouse_cursor = new MouseCursor( datadir + "/images/status/mousecursor.png",1);
 584
 585 }
 586
 587 void st_general_free(void)
 588 {
 589
 590   /* Free global images: */
 591
 592   text_free(&black_text);
 593   text_free(&gold_text);
 594   text_free(&white_text);
 595   text_free(&blue_text);
 596   text_free(&red_text);
 597   text_free(&white_small_text);
 598   text_free(&white_big_text);
 599
 600   /* Free GUI/menu images: */
 601   texture_free(&checkbox);
 602   texture_free(&checkbox_checked);
 603   texture_free(&back);
 604   texture_free(&arrow_left);
 605   texture_free(&arrow_right);
 606
 607   /* Free mouse-cursor */
 608   delete mouse_cursor;
 609
 610   /* Free menus */
 611   delete main_menu;
 612   delete game_menu;
 613   delete options_menu;
 614   delete highscore_menu;
 615   delete save_game_menu;
 616   delete load_game_menu;
 617 }
 618
 619 void st_video_setup(void)
 620 {
 621
 622   if(screen != NULL)
 623     SDL_FreeSurface(screen);
 624
 625   /* Init SDL Video: */
 626
 627   if (SDL_Init(SDL_INIT_VIDEO) < 0)
 628     {
 629       fprintf(stderr,
 630               "\nError: I could not initialize video!\n"
 631               "The Simple DirectMedia error that occured was:\n"
 632               "%s\n\n", SDL_GetError());
 633       exit(1);
 634     }
 635
 636   /* Open display: */
 637
 638   if(use_gl)
 639     st_video_setup_gl();
 640   else
 641     st_video_setup_sdl();
 642
 643   texture_setup();
 644
 645   /* Set window manager stuff: */
 646
 647   SDL_WM_SetCaption("SuperTux " VERSION, "SuperTux");
 648
 649 }
 650
 651 void st_video_setup_sdl(void)
 652 {
 653   SDL_FreeSurface(screen);
 654
 655   if (use_fullscreen)
 656     {
 657       screen = SDL_SetVideoMode(640, 480, 0, SDL_FULLSCREEN ) ; /* | SDL_HWSURFACE); */
 658       if (screen == NULL)
 659         {
 660           fprintf(stderr,
 661                   "\nWarning: I could not set up fullscreen video for "
 662                   "640x480 mode.\n"
 663                   "The Simple DirectMedia error that occured was:\n"
 664                   "%s\n\n", SDL_GetError());
 665           use_fullscreen = false;
 666         }
 667     }
 668   else
 669     {
 670       screen = SDL_SetVideoMode(640, 480, 0, SDL_HWSURFACE | SDL_DOUBLEBUF );
 671
 672       if (screen == NULL)
 673         {
 674           fprintf(stderr,
 675                   "\nError: I could not set up video for 640x480 mode.\n"
 676                   "The Simple DirectMedia error that occured was:\n"
 677                   "%s\n\n", SDL_GetError());
 678           exit(1);
 679         }
 680     }
 681 }
 682
 683 void st_video_setup_gl(void)
 684 {
 685 #ifndef NOOPENGL
 686
 687   SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
 688   SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
 689   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
 690   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 691   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 692
 693   if (use_fullscreen)
 694     {
 695       screen = SDL_SetVideoMode(640, 480, 0, SDL_FULLSCREEN | SDL_OPENGL) ; /* | SDL_HWSURFACE); */
 696       if (screen == NULL)
 697         {
 698           fprintf(stderr,
 699                   "\nWarning: I could not set up fullscreen video for "
 700                   "640x480 mode.\n"
 701                   "The Simple DirectMedia error that occured was:\n"
 702                   "%s\n\n", SDL_GetError());
 703           use_fullscreen = false;
 704         }
 705     }
 706   else
 707     {
 708       screen = SDL_SetVideoMode(640, 480, 0, SDL_OPENGL);
 709
 710       if (screen == NULL)
 711         {
 712           fprintf(stderr,
 713                   "\nError: I could not set up video for 640x480 mode.\n"
 714                   "The Simple DirectMedia error that occured was:\n"
 715                   "%s\n\n", SDL_GetError());
 716           exit(1);
 717         }
 718     }
 719
 720   /*
 721    * Set up OpenGL for 2D rendering.
 722    */
 723   glDisable(GL_DEPTH_TEST);
 724   glDisable(GL_CULL_FACE);
 725
 726   glViewport(0, 0, screen->w, screen->h);
 727   glMatrixMode(GL_PROJECTION);
 728   glLoadIdentity();
 729   glOrtho(0, screen->w, screen->h, 0, -1.0, 1.0);
 730
 731   glMatrixMode(GL_MODELVIEW);
 732   glLoadIdentity();
 733   glTranslatef(0.0f, 0.0f, 0.0f);
 734
 735 #endif
 736
 737 }
 738
 739 void st_joystick_setup(void)
 740 {
 741
 742   /* Init Joystick: */
 743
 744   use_joystick = true;
 745
 746   if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
 747     {
 748       fprintf(stderr, "Warning: I could not initialize joystick!\n"
 749               "The Simple DirectMedia error that occured was:\n"
 750               "%s\n\n", SDL_GetError());
 751
 752       use_joystick = false;
 753     }
 754   else
 755     {
 756       /* Open joystick: */
 757       if (SDL_NumJoysticks() <= 0)
 758         {
 759           fprintf(stderr, "Warning: No joysticks are available.\n");
 760
 761           use_joystick = false;
 762         }
 763       else
 764         {
 765           js = SDL_JoystickOpen(joystick_num);
 766
 767           if (js == NULL)
 768             {
 769               fprintf(stderr, "Warning: Could not open joystick %d.\n"
 770                       "The Simple DirectMedia error that occured was:\n"
 771                       "%s\n\n", joystick_num, SDL_GetError());
 772
 773               use_joystick = false;
 774             }
 775           else
 776             {
 777               /* Check for proper joystick configuration: */
 778
 779               if (SDL_JoystickNumAxes(js) < 2)
 780                 {
 781                   fprintf(stderr,
 782                           "Warning: Joystick does not have enough axes!\n");
 783
 784                   use_joystick = false;
 785                 }
 786               else
 787                 {
 788                   if (SDL_JoystickNumButtons(js) < 2)
 789                     {
 790                       fprintf(stderr,
 791                               "Warning: "
 792                               "Joystick does not have enough buttons!\n");
 793
 794                       use_joystick = false;
 795                     }
 796                 }
 797             }
 798         }
 799     }
 800 }
 801
 802 void st_audio_setup(void)
 803 {
 804
 805   /* Init SDL Audio silently even if --disable-sound : */
 806
 807   if (audio_device)
 808     {
 809       if (SDL_Init(SDL_INIT_AUDIO) < 0)
 810         {
 811           /* only print out message if sound or music
 812              was not disabled at command-line
 813            */
 814           if (use_sound || use_music)
 815             {
 816               fprintf(stderr,
 817                       "\nWarning: I could not initialize audio!\n"
 818                       "The Simple DirectMedia error that occured was:\n"
 819                       "%s\n\n", SDL_GetError());
 820             }
 821           /* keep the programming logic the same :-)
 822              because in this case, use_sound & use_music' values are ignored
 823              when there's no available audio device
 824           */
 825           use_sound = false;
 826           use_music = false;
 827           audio_device = false;
 828         }
 829     }
 830
 831
 832   /* Open sound silently regarless the value of "use_sound": */
 833
 834   if (audio_device)
 835     {
 836       if (open_audio(44100, AUDIO_S16, 2, 2048) < 0)
 837         {
 838           /* only print out message if sound or music
 839              was not disabled at command-line
 840            */
 841           if (use_sound || use_music)
 842             {
 843               fprintf(stderr,
 844                       "\nWarning: I could not set up audio for 44100 Hz "
 845                       "16-bit stereo.\n"
 846                       "The Simple DirectMedia error that occured was:\n"
 847                       "%s\n\n", SDL_GetError());
 848             }
 849           use_sound = false;
 850           use_music = false;
 851           audio_device = false;
 852         }
 853     }
 854
 855 }
 856
 857
 858 /* --- SHUTDOWN --- */
 859
 860 void st_shutdown(void)
 861 {
 862   close_audio();
 863   SDL_Quit();
 864   saveconfig();
 865 }
 866
 867 /* --- ABORT! --- */
 868
 869 void st_abort(const std::string& reason, const std::string& details)
 870 {
 871   fprintf(stderr, "\nError: %s\n%s\n\n", reason.c_str(), details.c_str());
 872   st_shutdown();
 873   abort();
 874 }
 875
 876
 877 /* Set Icon (private) */
 878
 879 void seticon(void)
 880 {
 881   int masklen;
 882   Uint8 * mask;
 883   SDL_Surface * icon;
 884
 885
 886   /* Load icon into a surface: */
 887
 888   icon = IMG_Load((datadir + "/images/icon.png").c_str());
 889   if (icon == NULL)
 890     {
 891       fprintf(stderr,
 892               "\nError: I could not load the icon image: %s%s\n"
 893               "The Simple DirectMedia error that occured was:\n"
 894               "%s\n\n", datadir.c_str(), "/images/icon.png", SDL_GetError());
 895       exit(1);
 896     }
 897
 898
 899   /* Create mask: */
 900
 901   masklen = (((icon -> w) + 7) / 8) * (icon -> h);
 902   mask = (Uint8*) malloc(masklen * sizeof(Uint8));
 903   memset(mask, 0xFF, masklen);
 904
 905
 906   /* Set icon: */
 907
 908   SDL_WM_SetIcon(icon, mask);
 909
 910
 911   /* Free icon surface & mask: */
 912
 913   free(mask);
 914   SDL_FreeSurface(icon);
 915 }
 916
 917
 918 /* Parse command-line arguments: */
 919
 920 void parseargs(int argc, char * argv[])
 921 {
 922   int i;
 923
 924   loadconfig();
 925
 926   /* Parse arguments: */
 927
 928   for (i = 1; i < argc; i++)
 929     {
 930       if (strcmp(argv[i], "--fullscreen") == 0 ||
 931           strcmp(argv[i], "-f") == 0)
 932         {
 933           /* Use full screen: */
 934
 935           use_fullscreen = true;
 936         }
 937       else if (strcmp(argv[i], "--joystick") == 0 || strcmp(argv[i], "-j") == 0)
 938         {
 939           assert(i+1 < argc);
 940           joystick_num = atoi(argv[++i]);
 941         }
 942       else if (strcmp(argv[i], "--worldmap") == 0)
 943         {
 944           launch_worldmap_mode = true;
 945         }
 946       else if (strcmp(argv[i], "--datadir") == 0
 947                || strcmp(argv[i], "-d") == 0 )
 948         {
 949           assert(i+1 < argc);
 950           datadir = argv[++i];
 951         }
 952       else if (strcmp(argv[i], "--show-fps") == 0)
 953         {
 954           /* Use full screen: */
 955
 956           show_fps = true;
 957         }
 958       else if (strcmp(argv[i], "--opengl") == 0 ||
 959                strcmp(argv[i], "-gl") == 0)
 960         {
 961 #ifndef NOOPENGL
 962           /* Use OpengGL: */
 963
 964           use_gl = true;
 965 #endif
 966         }
 967       else if (strcmp(argv[i], "--sdl") == 0)
 968           {
 969             use_gl = false;
 970           }
 971       else if (strcmp(argv[i], "--usage") == 0)
 972         {
 973           /* Show usage: */
 974
 975           usage(argv[0], 0);
 976         }
 977       else if (strcmp(argv[i], "--version") == 0)
 978         {
 979           /* Show version: */
 980           printf("SuperTux " VERSION "\n");
 981           exit(0);
 982         }
 983       else if (strcmp(argv[i], "--disable-sound") == 0)
 984         {
 985           /* Disable the compiled in sound feature */
 986           printf("Sounds disabled \n");
 987           use_sound = false;
 988         }
 989       else if (strcmp(argv[i], "--disable-music") == 0)
 990         {
 991           /* Disable the compiled in sound feature */
 992           printf("Music disabled \n");
 993           use_music = false;
 994         }
 995       else if (strcmp(argv[i], "--debug-mode") == 0)
 996         {
 997           /* Enable the debug-mode */
 998           debug_mode = true;
 999
1000         }
1001       else if (strcmp(argv[i], "--help") == 0)
1002         {     /* Show help: */
1003           puts("Super Tux " VERSION "\n"
1004                "  Please see the file \"README.txt\" for more details.\n");
1005           printf("Usage: %s [OPTIONS] FILENAME\n\n", argv[0]);
1006           puts("Display Options:\n"
1007                "  --fullscreen        Run in fullscreen mode.\n"
1008                "  --opengl            If opengl support was compiled in, this will enable\n"
1009                "                      the EXPERIMENTAL OpenGL mode.\n"
1010                "  --sdl               Use non-opengl renderer\n"
1011                "\n"
1012                "Sound Options:\n"
1013                "  --disable-sound     If sound support was compiled in,  this will\n"
1014                "                      disable sound for this session of the game.\n"
1015                "  --disable-music     Like above, but this will disable music.\n"
1016                "\n"
1017                "Misc Options:\n"
1018                "  -j, --joystick NUM  Use joystick NUM (default: 0)\n"
1019                "  --worldmap          Start in worldmap-mode (EXPERIMENTAL)\n"
1020                "  -d, --datadir DIR   Load Game data from DIR (default: automatic)\n"
1021                "  --debug-mode        Enables the debug-mode, which is useful for developers.\n"
1022                "  --help              Display a help message summarizing command-line\n"
1023                "                      options, license and game controls.\n"
1024                "  --usage             Display a brief message summarizing command-line options.\n"
1025                "  --version           Display the version of SuperTux you're running.\n\n"
1026                );
1027           exit(0);
1028         }
1029       else if (argv[i][0] != '-')
1030         {
1031           level_startup_file = argv[i];
1032         }
1033       else
1034         {
1035           /* Unknown - complain! */
1036
1037           usage(argv[0], 1);
1038         }
1039     }
1040 }
1041
1042
1043 /* Display usage: */
1044
1045 void usage(char * prog, int ret)
1046 {
1047   FILE * fi;
1048
1049
1050   /* Determine which stream to write to: */
1051
1052   if (ret == 0)
1053     fi = stdout;
1054   else
1055     fi = stderr;
1056
1057
1058   /* Display the usage message: */
1059
1060   fprintf(fi, "Usage: %s [--fullscreen] [--opengl] [--disable-sound] [--disable-music] [--debug-mode] | [--usage | --help | --version] [--worldmap] FILENAME\n",
1061           prog);
1062
1063
1064   /* Quit! */
1065
1066   exit(ret);
1067 }
1068