src/setup.cpp

   1 /*
   2   setup.c
   3
   4   Super Tux - Setup
   5
   6   by Bill Kendrick
   7   bill@newbreedsoftware.com
   8   http://www.newbreedsoftware.com/supertux/
   9
  10   April 11, 2000 - March 15, 2004
  11 */
  12
  13 #include <assert.h>
  14 #include <iostream>
  15 #include <stdio.h>
  16 #include <stdlib.h>
  17 #include <string.h>
  18 #include <errno.h>
  19 #include <unistd.h>
  20 #include <SDL.h>
  21 #include <SDL_image.h>
  22 #ifndef NOOPENGL
  23 #include <SDL_opengl.h>
  24 #endif
  25
  26 #include <sys/stat.h>
  27 #include <sys/types.h>
  28 #include <dirent.h>
  29 #ifndef WIN32
  30 #include <libgen.h>
  31 #endif
  32 #include <ctype.h>
  33
  34 #include "defines.h"
  35 #include "globals.h"
  36 #include "setup.h"
  37 #include "screen.h"
  38 #include "texture.h"
  39 #include "menu.h"
  40 #include "gameloop.h"
  41 #include "configfile.h"
  42 #include "scene.h"
  43
  44 #ifdef WIN32
  45 #define mkdir(dir, mode)    mkdir(dir)
  46 // on win32 we typically don't want LFS paths
  47 #undef DATA_PREFIX
  48 #define DATA_PREFIX "./data/"
  49 #endif
  50
  51 /* Local function prototypes: */
  52
  53 void seticon(void);
  54 void usage(char * prog, int ret);
  55
  56 /* Does the given file exist and is it accessible? */
  57 int faccessible(const char *filename)
  58 {
  59   struct stat filestat;
  60   if (stat(filename, &filestat) == -1)
  61     {
  62       return false;
  63     }
  64   else
  65     {
  66       if(S_ISREG(filestat.st_mode))
  67         return true;
  68       else
  69         return false;
  70     }
  71 }
  72
  73 /* Can we write to this location? */
  74 int fwriteable(const char *filename)
  75 {
  76   FILE* fi;
  77   fi = fopen(filename, "wa");
  78   if (fi == NULL)
  79     {
  80       return false;
  81     }
  82   return true;
  83 }
  84
  85 /* Makes sure a directory is created in either the SuperTux home directory or the SuperTux base directory.*/
  86 int fcreatedir(const char* relative_dir)
  87 {
  88   char path[1024];
  89   snprintf(path, 1024, "%s/%s/", st_dir, relative_dir);
  90   if(mkdir(path,0755) != 0)
  91     {
  92       snprintf(path, 1024, "%s/%s/", datadir.c_str(), relative_dir);
  93       if(mkdir(path,0755) != 0)
  94         {
  95           return false;
  96         }
  97       else
  98         {
  99           return true;
 100         }
 101     }
 102   else
 103     {
 104       return true;
 105     }
 106 }
 107
 108 FILE * opendata(const char * rel_filename, const char * mode)
 109 {
 110   char * filename = NULL;
 111   FILE * fi;
 112
 113   filename = (char *) malloc(sizeof(char) * (strlen(st_dir) +
 114                                              strlen(rel_filename) + 1));
 115
 116   strcpy(filename, st_dir);
 117   /* Open the high score file: */
 118
 119   strcat(filename, rel_filename);
 120
 121   /* Try opening the file: */
 122   fi = fopen(filename, mode);
 123
 124   if (fi == NULL)
 125     {
 126       fprintf(stderr, "Warning: Unable to open the file \"%s\" ", filename);
 127
 128       if (strcmp(mode, "r") == 0)
 129         fprintf(stderr, "for read!!!\n");
 130       else if (strcmp(mode, "w") == 0)
 131         fprintf(stderr, "for write!!!\n");
 132     }
 133   free( filename );
 134
 135   return(fi);
 136 }
 137
 138 /* Get all names of sub-directories in a certain directory. */
 139 /* Returns the number of sub-directories found. */
 140 /* Note: The user has to free the allocated space. */
 141 string_list_type dsubdirs(const char *rel_path,const  char* expected_file)
 142 {
 143   DIR *dirStructP;
 144   struct dirent *direntp;
 145   string_list_type sdirs;
 146   char filename[1024];
 147   char path[1024];
 148
 149   string_list_init(&sdirs);
 150   sprintf(path,"%s/%s",st_dir,rel_path);
 151   if((dirStructP = opendir(path)) != NULL)
 152     {
 153       while((direntp = readdir(dirStructP)) != NULL)
 154         {
 155           char absolute_filename[1024];
 156           struct stat buf;
 157
 158           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 159
 160           if (stat(absolute_filename, &buf) == 0 && S_ISDIR(buf.st_mode))
 161             {
 162               if(expected_file != NULL)
 163                 {
 164                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 165                   if(!faccessible(filename))
 166                     continue;
 167                 }
 168
 169               string_list_add_item(&sdirs,direntp->d_name);
 170             }
 171         }
 172       closedir(dirStructP);
 173     }
 174
 175   sprintf(path,"%s/%s",datadir.c_str(),rel_path);
 176   if((dirStructP = opendir(path)) != NULL)
 177     {
 178       while((direntp = readdir(dirStructP)) != NULL)
 179         {
 180           char absolute_filename[1024];
 181           struct stat buf;
 182
 183           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 184
 185           if (stat(absolute_filename, &buf) == 0 && S_ISDIR(buf.st_mode))
 186             {
 187               if(expected_file != NULL)
 188                 {
 189                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 190                   if(!faccessible(filename))
 191                     {
 192                       continue;
 193                     }
 194                   else
 195                     {
 196                       sprintf(filename,"%s/%s/%s/%s",st_dir,rel_path,direntp->d_name,expected_file);
 197                       if(faccessible(filename))
 198                         continue;
 199                     }
 200                 }
 201
 202               string_list_add_item(&sdirs,direntp->d_name);
 203             }
 204         }
 205       closedir(dirStructP);
 206     }
 207
 208   return sdirs;
 209 }
 210
 211 string_list_type dfiles(const char *rel_path, const  char* glob, const  char* exception_str)
 212 {
 213   DIR *dirStructP;
 214   struct dirent *direntp;
 215   string_list_type sdirs;
 216   char path[1024];
 217
 218   string_list_init(&sdirs);
 219   sprintf(path,"%s/%s",st_dir,rel_path);
 220   if((dirStructP = opendir(path)) != NULL)
 221     {
 222       while((direntp = readdir(dirStructP)) != NULL)
 223         {
 224           char absolute_filename[1024];
 225           struct stat buf;
 226
 227           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 228
 229           if (stat(absolute_filename, &buf) == 0 && S_ISREG(buf.st_mode))
 230             {
 231               if(exception_str != NULL)
 232                 {
 233                   if(strstr(direntp->d_name,exception_str) != NULL)
 234                     continue;
 235                 }
 236               if(glob != NULL)
 237                 if(strstr(direntp->d_name,glob) == NULL)
 238                   continue;
 239
 240               string_list_add_item(&sdirs,direntp->d_name);
 241             }
 242         }
 243       closedir(dirStructP);
 244     }
 245
 246   sprintf(path,"%s/%s",datadir.c_str(),rel_path);
 247   if((dirStructP = opendir(path)) != NULL)
 248     {
 249       while((direntp = readdir(dirStructP)) != NULL)
 250         {
 251           char absolute_filename[1024];
 252           struct stat buf;
 253
 254           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 255
 256           if (stat(absolute_filename, &buf) == 0 && S_ISREG(buf.st_mode))
 257             {
 258               if(exception_str != NULL)
 259                 {
 260                   if(strstr(direntp->d_name,exception_str) != NULL)
 261                     continue;
 262                 }
 263               if(glob != NULL)
 264                 if(strstr(direntp->d_name,glob) == NULL)
 265                   continue;
 266
 267               string_list_add_item(&sdirs,direntp->d_name);
 268             }
 269         }
 270       closedir(dirStructP);
 271     }
 272
 273   return sdirs;
 274 }
 275
 276 void free_strings(char **strings, int num)
 277 {
 278   int i;
 279   for(i=0; i < num; ++i)
 280     free(strings[i]);
 281 }
 282
 283 /* --- SETUP --- */
 284 /* Set SuperTux configuration and save directories */
 285 void st_directory_setup(void)
 286 {
 287   char *home;
 288   char str[1024];
 289   /* Get home directory (from $HOME variable)... if we can't determine it,
 290      use the current directory ("."): */
 291   if (getenv("HOME") != NULL)
 292     home = getenv("HOME");
 293   else
 294     home = ".";
 295
 296   st_dir = (char *) malloc(sizeof(char) * (strlen(home) +
 297                                            strlen("/.supertux") + 1));
 298   strcpy(st_dir, home);
 299   strcat(st_dir, "/.supertux");
 300
 301   /* Remove .supertux config-file from old SuperTux versions */
 302   if(faccessible(st_dir))
 303     {
 304       remove
 305         (st_dir);
 306     }
 307
 308   st_save_dir = (char *) malloc(sizeof(char) * (strlen(st_dir) + strlen("/save") + 1));
 309
 310   strcpy(st_save_dir,st_dir);
 311   strcat(st_save_dir,"/save");
 312
 313   /* Create them. In the case they exist they won't destroy anything. */
 314   mkdir(st_dir, 0755);
 315   mkdir(st_save_dir, 0755);
 316
 317   sprintf(str, "%s/levels", st_dir);
 318   mkdir(str, 0755);
 319
 320   // User has not that a datadir, so we try some magic
 321   if (datadir.empty())
 322     {
 323 #ifndef WIN32
 324       // Detect datadir
 325       char exe_file[PATH_MAX];
 326       if (readlink("/proc/self/exe", exe_file, PATH_MAX) < 0)
 327         {
 328           puts("Couldn't read /proc/self/exe, using default path: " DATA_PREFIX);
 329           datadir = DATA_PREFIX;
 330         }
 331       else
 332         {
 333           std::string exedir = std::string(dirname(exe_file)) + "/";
 334
 335           datadir = exedir + "../data/"; // SuperTux run from source dir
 336           if (access(datadir.c_str(), F_OK) != 0)
 337             {
 338               datadir = exedir + "../share/supertux/"; // SuperTux run from PATH
 339               if (access(datadir.c_str(), F_OK) != 0)
 340                 { // If all fails, fall back to compiled path
 341                   datadir = DATA_PREFIX;
 342                 }
 343             }
 344         }
 345 #else
 346   datadir = DATA_PREFIX;
 347 #endif
 348     }
 349   printf("Datadir: %s\n", datadir.c_str());
 350 }
 351
 352 /* Create and setup menus. */
 353 void st_menu(void)
 354 {
 355   main_menu      = new Menu();
 356   options_menu   = new Menu();
 357   options_controls_menu   = new Menu();
 358   load_game_menu = new Menu();
 359   save_game_menu = new Menu();
 360   game_menu      = new Menu();
 361   highscore_menu = new Menu();
 362   contrib_menu   = new Menu();
 363
 364   main_menu->set_pos(screen->w/2, 335);
 365   main_menu->additem(MN_GOTO, "Start Game",0,load_game_menu);
 366   main_menu->additem(MN_GOTO, "Contrib Levels",0,contrib_menu);
 367   main_menu->additem(MN_GOTO, "Options",0,options_menu);
 368   main_menu->additem(MN_ACTION,"Level editor",0,0);
 369   main_menu->additem(MN_ACTION,"Credits",0,0);
 370   main_menu->additem(MN_ACTION,"Quit",0,0);
 371
 372   contrib_menu->additem(MN_LABEL,"Contrib Levels",0,0);
 373   contrib_menu->additem(MN_HL,"",0,0);
 374   contrib_menu->additem(MN_ACTION, "Some Levelset", 0, 0);
 375   contrib_menu->additem(MN_ACTION, "Someother Levelset", 0, 0);
 376   contrib_menu->additem(MN_ACTION, "Yet another Levelset", 0, 0);
 377   contrib_menu->additem(MN_HL,"",0,0);
 378   contrib_menu->additem(MN_BACK,"Back",0,0);
 379
 380   options_menu->additem(MN_LABEL,"Options",0,0);
 381   options_menu->additem(MN_HL,"",0,0);
 382   options_menu->additem(MN_TOGGLE,"Fullscreen",use_fullscreen,0);
 383   if(audio_device)
 384     {
 385       options_menu->additem(MN_TOGGLE,"Sound     ",use_sound,0);
 386       options_menu->additem(MN_TOGGLE,"Music     ",use_music,0);
 387     }
 388   else
 389     {
 390       options_menu->additem(MN_DEACTIVE,"Sound     ",use_sound,0);
 391       options_menu->additem(MN_DEACTIVE,"Music     ",use_music,0);
 392     }
 393   options_menu->additem(MN_TOGGLE,"Show FPS  ",show_fps,0);
 394   options_menu->additem(MN_GOTO,"Controls  ",0,options_controls_menu);
 395   options_menu->additem(MN_HL,"",0,0);
 396   options_menu->additem(MN_BACK,"Back",0,0);
 397
 398   options_controls_menu->additem(MN_LABEL,"Controls",0,0);
 399   options_controls_menu->additem(MN_HL,"",0,0);
 400   options_controls_menu->additem(MN_CONTROLFIELD,"Move Right",tux.keymap.right,0);
 401   options_controls_menu->additem(MN_HL,"",0,0);
 402   options_controls_menu->additem(MN_BACK,"Back",0,0);
 403
 404   load_game_menu->additem(MN_LABEL,"Start Game",0,0);
 405   load_game_menu->additem(MN_HL,"",0,0);
 406   load_game_menu->additem(MN_DEACTIVE,"Slot 1",0,0);
 407   load_game_menu->additem(MN_DEACTIVE,"Slot 2",0,0);
 408   load_game_menu->additem(MN_DEACTIVE,"Slot 3",0,0);
 409   load_game_menu->additem(MN_DEACTIVE,"Slot 4",0,0);
 410   load_game_menu->additem(MN_DEACTIVE,"Slot 5",0,0);
 411   load_game_menu->additem(MN_HL,"",0,0);
 412   load_game_menu->additem(MN_BACK,"Back",0,0);
 413
 414   save_game_menu->additem(MN_LABEL,"Save Game",0,0);
 415   save_game_menu->additem(MN_HL,"",0,0);
 416   save_game_menu->additem(MN_DEACTIVE,"Slot 1",0,0);
 417   save_game_menu->additem(MN_DEACTIVE,"Slot 2",0,0);
 418   save_game_menu->additem(MN_DEACTIVE,"Slot 3",0,0);
 419   save_game_menu->additem(MN_DEACTIVE,"Slot 4",0,0);
 420   save_game_menu->additem(MN_DEACTIVE,"Slot 5",0,0);
 421   save_game_menu->additem(MN_HL,"",0,0);
 422   save_game_menu->additem(MN_BACK,"Back",0,0);
 423
 424   game_menu->additem(MN_LABEL,"InGame Menu",0,0);
 425   game_menu->additem(MN_HL,"",0,0);
 426   game_menu->additem(MN_ACTION,"Return To Game",0,0);
 427   game_menu->additem(MN_GOTO,"Save Game",0,save_game_menu);
 428   game_menu->additem(MN_GOTO,"Load Game",0,load_game_menu);
 429   game_menu->additem(MN_GOTO,"Options",0,options_menu);
 430   game_menu->additem(MN_HL,"",0,0);
 431   game_menu->additem(MN_ACTION,"Quit Game",0,0);
 432
 433   highscore_menu->additem(MN_TEXTFIELD,"Enter your name:",0,0);
 434 }
 435
 436 void update_load_save_game_menu(Menu* pmenu, int load)
 437 {
 438   for(int i = 2; i < 7; ++i)
 439     {
 440       // FIXME: Insert a real savegame struct/class here instead of
 441       // doing string vodoo
 442       std::string tmp = slotinfo(i-1);
 443
 444       if(load && tmp.length() == strlen("Slot X - Free"))
 445         pmenu->item[i].kind = MN_ACTION;
 446       else
 447         pmenu->item[i].kind = MN_ACTION;
 448       menu_item_change_text(&pmenu->item[i], tmp.c_str());
 449     }
 450 }
 451
 452 void process_save_game_menu()
 453 {
 454   int slot = save_game_menu->check();
 455   if (slot != -1)
 456     savegame(slot - 1);
 457 }
 458
 459 bool process_load_game_menu()
 460 {
 461   int slot = load_game_menu->check();
 462
 463   if(slot != -1)
 464     {
 465       // FIXME: Insert a real savegame struct/class here instead of
 466       // doing string vodoo
 467       std::string tmp = slotinfo(slot-1);
 468
 469       if (tmp.length() == strlen("Slot X - Free"))
 470         { // Slot is free, so start a new game
 471           GameSession session("default", 1, ST_GL_PLAY);
 472           session.run();
 473
 474           show_menu = true;
 475           Menu::set_current(main_menu);
 476         }
 477       else
 478         { // Slot contains a level, so load it
 479           if (game_started)
 480             {
 481               GameSession session("default",slot - 1,ST_GL_LOAD_GAME);
 482               session.run();
 483
 484               show_menu = true;
 485               Menu::set_current(main_menu);
 486             }
 487           else
 488             {
 489               loadgame(slot - 1);
 490             }
 491         }
 492       st_pause_ticks_stop();
 493       return true;
 494     }
 495   else
 496     {
 497       return false;
 498     }
 499 }
 500
 501 /* Handle changes made to global settings in the options menu. */
 502 void process_options_menu(void)
 503 {
 504   switch (options_menu->check())
 505     {
 506     case 2:
 507       if(use_fullscreen != options_menu->item[2].toggled)
 508         {
 509           use_fullscreen = !use_fullscreen;
 510           st_video_setup();
 511         }
 512       break;
 513     case 3:
 514       if(use_sound != options_menu->item[3].toggled)
 515         use_sound = !use_sound;
 516       break;
 517     case 4:
 518       if(use_music != options_menu->item[4].toggled)
 519         {
 520           if(use_music)
 521             {
 522               if(playing_music())
 523                 {
 524                   halt_music();
 525                 }
 526               use_music = false;
 527             }
 528           else
 529             {
 530               use_music = true;
 531               if (!playing_music())
 532                 {
 533                   play_current_music();
 534                 }
 535             }
 536         }
 537       break;
 538     case 5:
 539       if(show_fps != options_menu->item[5].toggled)
 540         show_fps = !show_fps;
 541       break;
 542     }
 543 }
 544
 545 void st_general_setup(void)
 546 {
 547   /* Seed random number generator: */
 548
 549   srand(SDL_GetTicks());
 550
 551   /* Set icon image: */
 552
 553   seticon();
 554
 555   /* Unicode needed for input handling: */
 556
 557   SDL_EnableUNICODE(1);
 558
 559   /* Load global images: */
 560
 561   text_load(&black_text, datadir + "/images/status/letters-black.png", TEXT_TEXT, 16,18);
 562   text_load(&gold_text,datadir + "/images/status/letters-gold.png", TEXT_TEXT, 16,18);
 563   text_load(&blue_text,datadir + "/images/status/letters-blue.png", TEXT_TEXT, 16,18);
 564   text_load(&red_text,datadir + "/images/status/letters-red.png", TEXT_TEXT, 16,18);
 565   text_load(&white_text,datadir + "/images/status/letters-white.png", TEXT_TEXT, 16,18);
 566   text_load(&white_small_text,datadir + "/images/status/letters-white-small.png", TEXT_TEXT, 8,9);
 567   text_load(&white_big_text,datadir + "/images/status/letters-white-big.png", TEXT_TEXT, 20,23);
 568   text_load(&yellow_nums,datadir + "/images/status/numbers.png", TEXT_NUM, 32,32);
 569
 570   /* Load GUI/menu images: */
 571   texture_load(&checkbox, datadir + "/images/status/checkbox.png", USE_ALPHA);
 572   texture_load(&checkbox_checked, datadir + "/images/status/checkbox-checked.png", USE_ALPHA);
 573   texture_load(&back, datadir + "/images/status/back.png", USE_ALPHA);
 574   texture_load(&arrow_left, datadir + "/images/icons/left.png", USE_ALPHA);
 575   texture_load(&arrow_right, datadir + "/images/icons/right.png", USE_ALPHA);
 576
 577   /* Load the mouse-cursor */
 578   mouse_cursor = new MouseCursor( datadir + "/images/status/mousecursor.png",1);
 579
 580 }
 581
 582 void st_general_free(void)
 583 {
 584
 585   /* Free global images: */
 586
 587   text_free(&black_text);
 588   text_free(&gold_text);
 589   text_free(&white_text);
 590   text_free(&blue_text);
 591   text_free(&red_text);
 592   text_free(&white_small_text);
 593   text_free(&white_big_text);
 594
 595   /* Free GUI/menu images: */
 596   texture_free(&checkbox);
 597   texture_free(&checkbox_checked);
 598   texture_free(&back);
 599   texture_free(&arrow_left);
 600   texture_free(&arrow_right);
 601
 602   /* Free mouse-cursor */
 603   delete mouse_cursor;
 604
 605   /* Free menus */
 606   delete main_menu;
 607   delete game_menu;
 608   delete options_menu;
 609   delete highscore_menu;
 610   delete save_game_menu;
 611   delete load_game_menu;
 612 }
 613
 614 void st_video_setup(void)
 615 {
 616
 617   if(screen != NULL)
 618     SDL_FreeSurface(screen);
 619
 620   /* Init SDL Video: */
 621
 622   if (SDL_Init(SDL_INIT_VIDEO) < 0)
 623     {
 624       fprintf(stderr,
 625               "\nError: I could not initialize video!\n"
 626               "The Simple DirectMedia error that occured was:\n"
 627               "%s\n\n", SDL_GetError());
 628       exit(1);
 629     }
 630
 631   /* Open display: */
 632
 633   if(use_gl)
 634     st_video_setup_gl();
 635   else
 636     st_video_setup_sdl();
 637
 638   texture_setup();
 639
 640   /* Set window manager stuff: */
 641
 642   SDL_WM_SetCaption("SuperTux " VERSION, "SuperTux");
 643
 644 }
 645
 646 void st_video_setup_sdl(void)
 647 {
 648   SDL_FreeSurface(screen);
 649
 650   if (use_fullscreen)
 651     {
 652       screen = SDL_SetVideoMode(640, 480, 0, SDL_FULLSCREEN ) ; /* | SDL_HWSURFACE); */
 653       if (screen == NULL)
 654         {
 655           fprintf(stderr,
 656                   "\nWarning: I could not set up fullscreen video for "
 657                   "640x480 mode.\n"
 658                   "The Simple DirectMedia error that occured was:\n"
 659                   "%s\n\n", SDL_GetError());
 660           use_fullscreen = false;
 661         }
 662     }
 663   else
 664     {
 665       screen = SDL_SetVideoMode(640, 480, 0, SDL_HWSURFACE | SDL_DOUBLEBUF );
 666
 667       if (screen == NULL)
 668         {
 669           fprintf(stderr,
 670                   "\nError: I could not set up video for 640x480 mode.\n"
 671                   "The Simple DirectMedia error that occured was:\n"
 672                   "%s\n\n", SDL_GetError());
 673           exit(1);
 674         }
 675     }
 676 }
 677
 678 void st_video_setup_gl(void)
 679 {
 680 #ifndef NOOPENGL
 681
 682   SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
 683   SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
 684   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
 685   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 686   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 687
 688   if (use_fullscreen)
 689     {
 690       screen = SDL_SetVideoMode(640, 480, 0, SDL_FULLSCREEN | SDL_OPENGL) ; /* | SDL_HWSURFACE); */
 691       if (screen == NULL)
 692         {
 693           fprintf(stderr,
 694                   "\nWarning: I could not set up fullscreen video for "
 695                   "640x480 mode.\n"
 696                   "The Simple DirectMedia error that occured was:\n"
 697                   "%s\n\n", SDL_GetError());
 698           use_fullscreen = false;
 699         }
 700     }
 701   else
 702     {
 703       screen = SDL_SetVideoMode(640, 480, 0, SDL_OPENGL);
 704
 705       if (screen == NULL)
 706         {
 707           fprintf(stderr,
 708                   "\nError: I could not set up video for 640x480 mode.\n"
 709                   "The Simple DirectMedia error that occured was:\n"
 710                   "%s\n\n", SDL_GetError());
 711           exit(1);
 712         }
 713     }
 714
 715   /*
 716    * Set up OpenGL for 2D rendering.
 717    */
 718   glDisable(GL_DEPTH_TEST);
 719   glDisable(GL_CULL_FACE);
 720
 721   glViewport(0, 0, screen->w, screen->h);
 722   glMatrixMode(GL_PROJECTION);
 723   glLoadIdentity();
 724   glOrtho(0, screen->w, screen->h, 0, -1.0, 1.0);
 725
 726   glMatrixMode(GL_MODELVIEW);
 727   glLoadIdentity();
 728   glTranslatef(0.0f, 0.0f, 0.0f);
 729
 730 #endif
 731
 732 }
 733
 734 void st_joystick_setup(void)
 735 {
 736
 737   /* Init Joystick: */
 738
 739   use_joystick = true;
 740
 741   if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
 742     {
 743       fprintf(stderr, "Warning: I could not initialize joystick!\n"
 744               "The Simple DirectMedia error that occured was:\n"
 745               "%s\n\n", SDL_GetError());
 746
 747       use_joystick = false;
 748     }
 749   else
 750     {
 751       /* Open joystick: */
 752       if (SDL_NumJoysticks() <= 0)
 753         {
 754           fprintf(stderr, "Warning: No joysticks are available.\n");
 755
 756           use_joystick = false;
 757         }
 758       else
 759         {
 760           js = SDL_JoystickOpen(joystick_num);
 761
 762           if (js == NULL)
 763             {
 764               fprintf(stderr, "Warning: Could not open joystick %d.\n"
 765                       "The Simple DirectMedia error that occured was:\n"
 766                       "%s\n\n", joystick_num, SDL_GetError());
 767
 768               use_joystick = false;
 769             }
 770           else
 771             {
 772               /* Check for proper joystick configuration: */
 773
 774               if (SDL_JoystickNumAxes(js) < 2)
 775                 {
 776                   fprintf(stderr,
 777                           "Warning: Joystick does not have enough axes!\n");
 778
 779                   use_joystick = false;
 780                 }
 781               else
 782                 {
 783                   if (SDL_JoystickNumButtons(js) < 2)
 784                     {
 785                       fprintf(stderr,
 786                               "Warning: "
 787                               "Joystick does not have enough buttons!\n");
 788
 789                       use_joystick = false;
 790                     }
 791                 }
 792             }
 793         }
 794     }
 795 }
 796
 797 void st_audio_setup(void)
 798 {
 799
 800   /* Init SDL Audio silently even if --disable-sound : */
 801
 802   if (audio_device)
 803     {
 804       if (SDL_Init(SDL_INIT_AUDIO) < 0)
 805         {
 806           /* only print out message if sound or music
 807              was not disabled at command-line
 808            */
 809           if (use_sound || use_music)
 810             {
 811               fprintf(stderr,
 812                       "\nWarning: I could not initialize audio!\n"
 813                       "The Simple DirectMedia error that occured was:\n"
 814                       "%s\n\n", SDL_GetError());
 815             }
 816           /* keep the programming logic the same :-)
 817              because in this case, use_sound & use_music' values are ignored
 818              when there's no available audio device
 819           */
 820           use_sound = false;
 821           use_music = false;
 822           audio_device = false;
 823         }
 824     }
 825
 826
 827   /* Open sound silently regarless the value of "use_sound": */
 828
 829   if (audio_device)
 830     {
 831       if (open_audio(44100, AUDIO_S16, 2, 2048) < 0)
 832         {
 833           /* only print out message if sound or music
 834              was not disabled at command-line
 835            */
 836           if (use_sound || use_music)
 837             {
 838               fprintf(stderr,
 839                       "\nWarning: I could not set up audio for 44100 Hz "
 840                       "16-bit stereo.\n"
 841                       "The Simple DirectMedia error that occured was:\n"
 842                       "%s\n\n", SDL_GetError());
 843             }
 844           use_sound = false;
 845           use_music = false;
 846           audio_device = false;
 847         }
 848     }
 849
 850 }
 851
 852
 853 /* --- SHUTDOWN --- */
 854
 855 void st_shutdown(void)
 856 {
 857   close_audio();
 858   SDL_Quit();
 859   saveconfig();
 860 }
 861
 862 /* --- ABORT! --- */
 863
 864 void st_abort(const std::string& reason, const std::string& details)
 865 {
 866   fprintf(stderr, "\nError: %s\n%s\n\n", reason.c_str(), details.c_str());
 867   st_shutdown();
 868   abort();
 869 }
 870
 871
 872 /* Set Icon (private) */
 873
 874 void seticon(void)
 875 {
 876   int masklen;
 877   Uint8 * mask;
 878   SDL_Surface * icon;
 879
 880
 881   /* Load icon into a surface: */
 882
 883   icon = IMG_Load((datadir + "/images/icon.png").c_str());
 884   if (icon == NULL)
 885     {
 886       fprintf(stderr,
 887               "\nError: I could not load the icon image: %s%s\n"
 888               "The Simple DirectMedia error that occured was:\n"
 889               "%s\n\n", datadir.c_str(), "/images/icon.png", SDL_GetError());
 890       exit(1);
 891     }
 892
 893
 894   /* Create mask: */
 895
 896   masklen = (((icon -> w) + 7) / 8) * (icon -> h);
 897   mask = (Uint8*) malloc(masklen * sizeof(Uint8));
 898   memset(mask, 0xFF, masklen);
 899
 900
 901   /* Set icon: */
 902
 903   SDL_WM_SetIcon(icon, mask);
 904
 905
 906   /* Free icon surface & mask: */
 907
 908   free(mask);
 909   SDL_FreeSurface(icon);
 910 }
 911
 912
 913 /* Parse command-line arguments: */
 914
 915 void parseargs(int argc, char * argv[])
 916 {
 917   int i;
 918
 919   loadconfig();
 920
 921   /* Parse arguments: */
 922
 923   for (i = 1; i < argc; i++)
 924     {
 925       if (strcmp(argv[i], "--fullscreen") == 0 ||
 926           strcmp(argv[i], "-f") == 0)
 927         {
 928           /* Use full screen: */
 929
 930           use_fullscreen = true;
 931         }
 932       else if (strcmp(argv[i], "--joystick") == 0 || strcmp(argv[i], "-j") == 0)
 933         {
 934           assert(i+1 < argc);
 935           joystick_num = atoi(argv[++i]);
 936         }
 937       else if (strcmp(argv[i], "--worldmap") == 0)
 938         {
 939           launch_worldmap_mode = true;
 940         }
 941       else if (strcmp(argv[i], "--datadir") == 0
 942                || strcmp(argv[i], "-d") == 0 )
 943         {
 944           assert(i+1 < argc);
 945           datadir = argv[++i];
 946         }
 947       else if (strcmp(argv[i], "--show-fps") == 0)
 948         {
 949           /* Use full screen: */
 950
 951           show_fps = true;
 952         }
 953       else if (strcmp(argv[i], "--opengl") == 0 ||
 954                strcmp(argv[i], "-gl") == 0)
 955         {
 956 #ifndef NOOPENGL
 957           /* Use OpengGL: */
 958
 959           use_gl = true;
 960 #endif
 961         }
 962       else if (strcmp(argv[i], "--sdl") == 0)
 963           {
 964             use_gl = false;
 965           }
 966       else if (strcmp(argv[i], "--usage") == 0)
 967         {
 968           /* Show usage: */
 969
 970           usage(argv[0], 0);
 971         }
 972       else if (strcmp(argv[i], "--version") == 0)
 973         {
 974           /* Show version: */
 975           printf("SuperTux " VERSION "\n");
 976           exit(0);
 977         }
 978       else if (strcmp(argv[i], "--disable-sound") == 0)
 979         {
 980           /* Disable the compiled in sound feature */
 981           printf("Sounds disabled \n");
 982           use_sound = false;
 983         }
 984       else if (strcmp(argv[i], "--disable-music") == 0)
 985         {
 986           /* Disable the compiled in sound feature */
 987           printf("Music disabled \n");
 988           use_music = false;
 989         }
 990       else if (strcmp(argv[i], "--debug-mode") == 0)
 991         {
 992           /* Enable the debug-mode */
 993           debug_mode = true;
 994
 995         }
 996       else if (strcmp(argv[i], "--help") == 0)
 997         {     /* Show help: */
 998           puts("Super Tux " VERSION "\n"
 999                "  Please see the file \"README.txt\" for more details.\n");
1000           printf("Usage: %s [OPTIONS] FILENAME\n\n", argv[0]);
1001           puts("Display Options:\n"
1002                "  --fullscreen        Run in fullscreen mode.\n"
1003                "  --opengl            If opengl support was compiled in, this will enable\n"
1004                "                      the EXPERIMENTAL OpenGL mode.\n"
1005                "  --sdl               Use non-opengl renderer\n"
1006                "\n"
1007                "Sound Options:\n"
1008                "  --disable-sound     If sound support was compiled in,  this will\n"
1009                "                      disable sound for this session of the game.\n"
1010                "  --disable-music     Like above, but this will disable music.\n"
1011                "\n"
1012                "Misc Options:\n"
1013                "  -j, --joystick NUM  Use joystick NUM (default: 0)\n"
1014                "  --worldmap          Start in worldmap-mode (EXPERIMENTAL)\n"
1015                "  -d, --datadir DIR   Load Game data from DIR (default: automatic)\n"
1016                "  --debug-mode        Enables the debug-mode, which is useful for developers.\n"
1017                "  --help              Display a help message summarizing command-line\n"
1018                "                      options, license and game controls.\n"
1019                "  --usage             Display a brief message summarizing command-line options.\n"
1020                "  --version           Display the version of SuperTux you're running.\n\n"
1021                );
1022           exit(0);
1023         }
1024       else if (argv[i][0] != '-')
1025         {
1026           level_startup_file = argv[i];
1027         }
1028       else
1029         {
1030           /* Unknown - complain! */
1031
1032           usage(argv[0], 1);
1033         }
1034     }
1035 }
1036
1037
1038 /* Display usage: */
1039
1040 void usage(char * prog, int ret)
1041 {
1042   FILE * fi;
1043
1044
1045   /* Determine which stream to write to: */
1046
1047   if (ret == 0)
1048     fi = stdout;
1049   else
1050     fi = stderr;
1051
1052
1053   /* Display the usage message: */
1054
1055   fprintf(fi, "Usage: %s [--fullscreen] [--opengl] [--disable-sound] [--disable-music] [--debug-mode] | [--usage | --help | --version] [--worldmap] FILENAME\n",
1056           prog);
1057
1058
1059   /* Quit! */
1060
1061   exit(ret);
1062 }
1063