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