src/setup.cpp

   1 //  $Id$
   2 //
   3 //  SuperTux -  A Jump'n Run
   4 //  Copyright (C) 2000 Bill Kendrick <bill@newbreedsoftware.com>
   5 //
   6 //  This program is free software; you can redistribute it and/or
   7 //  modify it under the terms of the GNU General Public License
   8 //  as published by the Free Software Foundation; either version 2
   9 //  of the License, or (at your option) any later version.
  10 //
  11 //  This program is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //  GNU General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU General Public License
  17 //  along with this program; if not, write to the Free Software
  18 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19
  20 #include <assert.h>
  21 #include <stdio.h>
  22 #include <iostream>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <errno.h>
  27 #include <unistd.h>
  28 #include <SDL.h>
  29 #include <SDL_image.h>
  30 #ifndef NOOPENGL
  31 #include <SDL_opengl.h>
  32 #endif
  33
  34 #include <sys/stat.h>
  35 #include <sys/types.h>
  36 #include <dirent.h>
  37 #ifndef WIN32
  38 #include <libgen.h>
  39 #endif
  40 #include <ctype.h>
  41
  42 #include "defines.h"
  43 #include "globals.h"
  44 #include "setup.h"
  45 #include "screen.h"
  46 #include "texture.h"
  47 #include "menu.h"
  48 #include "gameloop.h"
  49 #include "configfile.h"
  50 #include "scene.h"
  51 #include "worldmap.h"
  52
  53 #include "player.h"
  54
  55 #ifdef WIN32
  56 #define mkdir(dir, mode)    mkdir(dir)
  57 // on win32 we typically don't want LFS paths
  58 #undef DATA_PREFIX
  59 #define DATA_PREFIX "./data/"
  60 #endif
  61
  62 /* Local function prototypes: */
  63
  64 void seticon(void);
  65 void usage(char * prog, int ret);
  66
  67 /* Does the given file exist and is it accessible? */
  68 int faccessible(const char *filename)
  69 {
  70   struct stat filestat;
  71   if (stat(filename, &filestat) == -1)
  72     {
  73       return false;
  74     }
  75   else
  76     {
  77       if(S_ISREG(filestat.st_mode))
  78         return true;
  79       else
  80         return false;
  81     }
  82 }
  83
  84 /* Can we write to this location? */
  85 int fwriteable(const char *filename)
  86 {
  87   FILE* fi;
  88   fi = fopen(filename, "wa");
  89   if (fi == NULL)
  90     {
  91       return false;
  92     }
  93   return true;
  94 }
  95
  96 /* Makes sure a directory is created in either the SuperTux home directory or the SuperTux base directory.*/
  97 int fcreatedir(const char* relative_dir)
  98 {
  99   char path[1024];
 100   snprintf(path, 1024, "%s/%s/", st_dir, relative_dir);
 101   if(mkdir(path,0755) != 0)
 102     {
 103       snprintf(path, 1024, "%s/%s/", datadir.c_str(), relative_dir);
 104       if(mkdir(path,0755) != 0)
 105         {
 106           return false;
 107         }
 108       else
 109         {
 110           return true;
 111         }
 112     }
 113   else
 114     {
 115       return true;
 116     }
 117 }
 118
 119 FILE * opendata(const char * rel_filename, const char * mode)
 120 {
 121   char * filename = NULL;
 122   FILE * fi;
 123
 124   filename = (char *) malloc(sizeof(char) * (strlen(st_dir) +
 125                                              strlen(rel_filename) + 1));
 126
 127   strcpy(filename, st_dir);
 128   /* Open the high score file: */
 129
 130   strcat(filename, rel_filename);
 131
 132   /* Try opening the file: */
 133   fi = fopen(filename, mode);
 134
 135   if (fi == NULL)
 136     {
 137       fprintf(stderr, "Warning: Unable to open the file \"%s\" ", filename);
 138
 139       if (strcmp(mode, "r") == 0)
 140         fprintf(stderr, "for read!!!\n");
 141       else if (strcmp(mode, "w") == 0)
 142         fprintf(stderr, "for write!!!\n");
 143     }
 144   free( filename );
 145
 146   return(fi);
 147 }
 148
 149 /* Get all names of sub-directories in a certain directory. */
 150 /* Returns the number of sub-directories found. */
 151 /* Note: The user has to free the allocated space. */
 152 string_list_type dsubdirs(const char *rel_path,const  char* expected_file)
 153 {
 154   DIR *dirStructP;
 155   struct dirent *direntp;
 156   string_list_type sdirs;
 157   char filename[1024];
 158   char path[1024];
 159
 160   string_list_init(&sdirs);
 161   sprintf(path,"%s/%s",st_dir,rel_path);
 162   if((dirStructP = opendir(path)) != NULL)
 163     {
 164       while((direntp = readdir(dirStructP)) != NULL)
 165         {
 166           char absolute_filename[1024];
 167           struct stat buf;
 168
 169           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 170
 171           if (stat(absolute_filename, &buf) == 0 && S_ISDIR(buf.st_mode))
 172             {
 173               if(expected_file != NULL)
 174                 {
 175                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 176                   if(!faccessible(filename))
 177                     continue;
 178                 }
 179
 180               string_list_add_item(&sdirs,direntp->d_name);
 181             }
 182         }
 183       closedir(dirStructP);
 184     }
 185
 186   sprintf(path,"%s/%s",datadir.c_str(),rel_path);
 187   if((dirStructP = opendir(path)) != NULL)
 188     {
 189       while((direntp = readdir(dirStructP)) != NULL)
 190         {
 191           char absolute_filename[1024];
 192           struct stat buf;
 193
 194           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 195
 196           if (stat(absolute_filename, &buf) == 0 && S_ISDIR(buf.st_mode))
 197             {
 198               if(expected_file != NULL)
 199                 {
 200                   sprintf(filename,"%s/%s/%s",path,direntp->d_name,expected_file);
 201                   if(!faccessible(filename))
 202                     {
 203                       continue;
 204                     }
 205                   else
 206                     {
 207                       sprintf(filename,"%s/%s/%s/%s",st_dir,rel_path,direntp->d_name,expected_file);
 208                       if(faccessible(filename))
 209                         continue;
 210                     }
 211                 }
 212
 213               string_list_add_item(&sdirs,direntp->d_name);
 214             }
 215         }
 216       closedir(dirStructP);
 217     }
 218
 219   return sdirs;
 220 }
 221
 222 string_list_type dfiles(const char *rel_path, const  char* glob, const  char* exception_str)
 223 {
 224   DIR *dirStructP;
 225   struct dirent *direntp;
 226   string_list_type sdirs;
 227   char path[1024];
 228
 229   string_list_init(&sdirs);
 230   sprintf(path,"%s/%s",st_dir,rel_path);
 231   if((dirStructP = opendir(path)) != NULL)
 232     {
 233       while((direntp = readdir(dirStructP)) != NULL)
 234         {
 235           char absolute_filename[1024];
 236           struct stat buf;
 237
 238           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 239
 240           if (stat(absolute_filename, &buf) == 0 && S_ISREG(buf.st_mode))
 241             {
 242               if(exception_str != NULL)
 243                 {
 244                   if(strstr(direntp->d_name,exception_str) != NULL)
 245                     continue;
 246                 }
 247               if(glob != NULL)
 248                 if(strstr(direntp->d_name,glob) == NULL)
 249                   continue;
 250
 251               string_list_add_item(&sdirs,direntp->d_name);
 252             }
 253         }
 254       closedir(dirStructP);
 255     }
 256
 257   sprintf(path,"%s/%s",datadir.c_str(),rel_path);
 258   if((dirStructP = opendir(path)) != NULL)
 259     {
 260       while((direntp = readdir(dirStructP)) != NULL)
 261         {
 262           char absolute_filename[1024];
 263           struct stat buf;
 264
 265           sprintf(absolute_filename, "%s/%s", path, direntp->d_name);
 266
 267           if (stat(absolute_filename, &buf) == 0 && S_ISREG(buf.st_mode))
 268             {
 269               if(exception_str != NULL)
 270                 {
 271                   if(strstr(direntp->d_name,exception_str) != NULL)
 272                     continue;
 273                 }
 274               if(glob != NULL)
 275                 if(strstr(direntp->d_name,glob) == NULL)
 276                   continue;
 277
 278               string_list_add_item(&sdirs,direntp->d_name);
 279             }
 280         }
 281       closedir(dirStructP);
 282     }
 283
 284   return sdirs;
 285 }
 286
 287 void free_strings(char **strings, int num)
 288 {
 289   int i;
 290   for(i=0; i < num; ++i)
 291     free(strings[i]);
 292 }
 293
 294 /* --- SETUP --- */
 295 /* Set SuperTux configuration and save directories */
 296 void st_directory_setup(void)
 297 {
 298   char *home;
 299   char str[1024];
 300   /* Get home directory (from $HOME variable)... if we can't determine it,
 301      use the current directory ("."): */
 302   if (getenv("HOME") != NULL)
 303     home = getenv("HOME");
 304   else
 305     home = ".";
 306
 307   st_dir = (char *) malloc(sizeof(char) * (strlen(home) +
 308                                            strlen("/.supertux") + 1));
 309   strcpy(st_dir, home);
 310   strcat(st_dir, "/.supertux");
 311
 312   /* Remove .supertux config-file from old SuperTux versions */
 313   if(faccessible(st_dir))
 314     {
 315       remove
 316         (st_dir);
 317     }
 318
 319   st_save_dir = (char *) malloc(sizeof(char) * (strlen(st_dir) + strlen("/save") + 1));
 320
 321   strcpy(st_save_dir,st_dir);
 322   strcat(st_save_dir,"/save");
 323
 324   /* Create them. In the case they exist they won't destroy anything. */
 325   mkdir(st_dir, 0755);
 326   mkdir(st_save_dir, 0755);
 327
 328   sprintf(str, "%s/levels", st_dir);
 329   mkdir(str, 0755);
 330
 331   // User has not that a datadir, so we try some magic
 332   if (datadir.empty())
 333     {
 334 #ifndef WIN32
 335       // Detect datadir
 336       char exe_file[PATH_MAX];
 337       if (readlink("/proc/self/exe", exe_file, PATH_MAX) < 0)
 338         {
 339           puts("Couldn't read /proc/self/exe, using default path: " DATA_PREFIX);
 340           datadir = DATA_PREFIX;
 341         }
 342       else
 343         {
 344           std::string exedir = std::string(dirname(exe_file)) + "/";
 345
 346           datadir = exedir + "../data/"; // SuperTux run from source dir
 347           if (access(datadir.c_str(), F_OK) != 0)
 348             {
 349               datadir = exedir + "../share/supertux/"; // SuperTux run from PATH
 350               if (access(datadir.c_str(), F_OK) != 0)
 351                 { // If all fails, fall back to compiled path
 352                   datadir = DATA_PREFIX;
 353                 }
 354             }
 355         }
 356 #else
 357   datadir = DATA_PREFIX;
 358 #endif
 359     }
 360   printf("Datadir: %s\n", datadir.c_str());
 361 }
 362
 363 /* Create and setup menus. */
 364 void st_menu(void)
 365 {
 366   main_menu      = new Menu();
 367   options_menu   = new Menu();
 368   options_controls_menu   = new Menu();
 369   load_game_menu = new Menu();
 370   save_game_menu = new Menu();
 371   game_menu      = new Menu();
 372   highscore_menu = new Menu();
 373   contrib_menu   = new Menu();
 374   contrib_subset_menu   = new Menu();
 375   worldmap_menu  = new Menu();
 376
 377   main_menu->set_pos(screen->w/2, 335);
 378   main_menu->additem(MN_GOTO, "Start Game",0,load_game_menu);
 379   main_menu->additem(MN_GOTO, "Contrib Levels",0,contrib_menu);
 380   main_menu->additem(MN_GOTO, "Options",0,options_menu);
 381   main_menu->additem(MN_ACTION,"Level editor",0,0);
 382   main_menu->additem(MN_ACTION,"Credits",0,0);
 383   main_menu->additem(MN_ACTION,"Quit",0,0);
 384
 385   options_menu->additem(MN_LABEL,"Options",0,0);
 386   options_menu->additem(MN_HL,"",0,0);
 387 #ifndef NOOPENGL
 388   options_menu->additem(MN_TOGGLE,"OpenGL",use_gl,0);
 389 #else
 390   options_menu->additem(MN_DEACTIVE,"OpenGL (not supported)",use_gl,0);
 391 #endif
 392   options_menu->additem(MN_TOGGLE,"Fullscreen",use_fullscreen,0);
 393   if(audio_device)
 394     {
 395       options_menu->additem(MN_TOGGLE,"Sound     ",use_sound,0);
 396       options_menu->additem(MN_TOGGLE,"Music     ",use_music,0);
 397     }
 398   else
 399     {
 400       options_menu->additem(MN_DEACTIVE,"Sound     ",use_sound,0);
 401       options_menu->additem(MN_DEACTIVE,"Music     ",use_music,0);
 402     }
 403   options_menu->additem(MN_TOGGLE,"Show FPS  ",show_fps,0);
 404   options_menu->additem(MN_GOTO,"Controls  ",0,options_controls_menu);
 405   options_menu->additem(MN_HL,"",0,0);
 406   options_menu->additem(MN_BACK,"Back",0,0);
 407
 408   options_controls_menu->additem(MN_LABEL,"Controls",0,0);
 409   options_controls_menu->additem(MN_HL,"",0,0);
 410   options_controls_menu->additem(MN_CONTROLFIELD,"Right move", 0,0, &keymap.right);
 411   options_controls_menu->additem(MN_CONTROLFIELD,"Left move", 0,0, &keymap.left);
 412   options_controls_menu->additem(MN_CONTROLFIELD,"Jump", 0,0, &keymap.jump);
 413   options_controls_menu->additem(MN_CONTROLFIELD,"Duck", 0,0, &keymap.duck);
 414   options_controls_menu->additem(MN_CONTROLFIELD,"Power", 0,0, &keymap.fire);
 415   options_controls_menu->additem(MN_HL,"",0,0);
 416   options_controls_menu->additem(MN_BACK,"Back",0,0);
 417
 418   load_game_menu->additem(MN_LABEL,"Start Game",0,0);
 419   load_game_menu->additem(MN_HL,"",0,0);
 420   load_game_menu->additem(MN_DEACTIVE,"Slot 1",0,0);
 421   load_game_menu->additem(MN_DEACTIVE,"Slot 2",0,0);
 422   load_game_menu->additem(MN_DEACTIVE,"Slot 3",0,0);
 423   load_game_menu->additem(MN_DEACTIVE,"Slot 4",0,0);
 424   load_game_menu->additem(MN_DEACTIVE,"Slot 5",0,0);
 425   load_game_menu->additem(MN_HL,"",0,0);
 426   load_game_menu->additem(MN_BACK,"Back",0,0);
 427
 428   save_game_menu->additem(MN_LABEL,"Save Game",0,0);
 429   save_game_menu->additem(MN_HL,"",0,0);
 430   save_game_menu->additem(MN_DEACTIVE,"Slot 1",0,0);
 431   save_game_menu->additem(MN_DEACTIVE,"Slot 2",0,0);
 432   save_game_menu->additem(MN_DEACTIVE,"Slot 3",0,0);
 433   save_game_menu->additem(MN_DEACTIVE,"Slot 4",0,0);
 434   save_game_menu->additem(MN_DEACTIVE,"Slot 5",0,0);
 435   save_game_menu->additem(MN_HL,"",0,0);
 436   save_game_menu->additem(MN_BACK,"Back",0,0);
 437
 438   game_menu->additem(MN_LABEL,"Pause",0,0);
 439   game_menu->additem(MN_HL,"",0,0);
 440   game_menu->additem(MN_ACTION,"Continue",0,0);
 441   game_menu->additem(MN_GOTO,"Options",0,options_menu);
 442   game_menu->additem(MN_HL,"",0,0);
 443   game_menu->additem(MN_ACTION,"Abort Level",0,0);
 444
 445   worldmap_menu->additem(MN_LABEL,"Pause",0,0);
 446   worldmap_menu->additem(MN_HL,"",0,0);
 447   worldmap_menu->additem(MN_ACTION,"Continue",0,0);
 448   worldmap_menu->additem(MN_ACTION,"Save",0,0);
 449   worldmap_menu->additem(MN_GOTO,"Options",0,options_menu);
 450   worldmap_menu->additem(MN_HL,"",0,0);
 451   worldmap_menu->additem(MN_ACTION,"Quit Game",0,0);
 452
 453   highscore_menu->additem(MN_TEXTFIELD,"Enter your name:",0,0);
 454 }
 455
 456 void update_load_save_game_menu(Menu* pmenu)
 457 {
 458   for(int i = 2; i < 7; ++i)
 459     {
 460       // FIXME: Insert a real savegame struct/class here instead of
 461       // doing string vodoo
 462       std::string tmp = slotinfo(i - 1);
 463       pmenu->item[i].kind = MN_ACTION;
 464       pmenu->item[i].change_text(tmp.c_str());
 465     }
 466 }
 467
 468 bool process_load_game_menu()
 469 {
 470   int slot = load_game_menu->check();
 471
 472   if(slot != -1 && load_game_menu->get_item(slot).kind == MN_ACTION)
 473     {
 474       WorldMapNS::WorldMap worldmap;
 475
 476       char slotfile[1024];
 477       snprintf(slotfile, 1024, "%s/slot%d.stsg", st_save_dir, slot-1);
 478
 479       // Load the game or at least set the savegame_file variable
 480       worldmap.loadgame(slotfile);
 481
 482       worldmap.display();
 483
 484       Menu::set_current(main_menu);
 485
 486       st_pause_ticks_stop();
 487       return true;
 488     }
 489   else
 490     {
 491       return false;
 492     }
 493 }
 494
 495 /* Handle changes made to global settings in the options menu. */
 496 void process_options_menu(void)
 497 {
 498   switch (options_menu->check())
 499     {
 500     case 2:
 501 #ifndef NOOPENGL
 502       if(use_gl != options_menu->item[2].toggled)
 503         {
 504           use_gl = !use_gl;
 505           st_video_setup();
 506         }
 507 #endif
 508       break;
 509     case 3:
 510       if(use_fullscreen != options_menu->item[3].toggled)
 511         {
 512           use_fullscreen = !use_fullscreen;
 513           st_video_setup();
 514         }
 515       break;
 516     case 4:
 517       if(use_sound != options_menu->item[4].toggled)
 518         use_sound = !use_sound;
 519       break;
 520     case 5:
 521       if(use_music != options_menu->item[5].toggled)
 522         {
 523           if(use_music)
 524             {
 525               if(playing_music())
 526                 {
 527                   halt_music();
 528                 }
 529               use_music = false;
 530             }
 531           else
 532             {
 533               use_music = true;
 534               if (!playing_music())
 535                 {
 536                   play_current_music();
 537                 }
 538             }
 539         }
 540       break;
 541     case 6:
 542       if(show_fps != options_menu->item[6].toggled)
 543         show_fps = !show_fps;
 544       break;
 545     }
 546 }
 547
 548 void st_general_setup(void)
 549 {
 550   /* Seed random number generator: */
 551
 552   srand(SDL_GetTicks());
 553
 554   /* Set icon image: */
 555
 556   seticon();
 557
 558   /* Unicode needed for input handling: */
 559
 560   SDL_EnableUNICODE(1);
 561
 562   /* Load global images: */
 563
 564   black_text  = new Text(datadir + "/images/status/letters-black.png", TEXT_TEXT, 16,18);
 565   gold_text   = new Text(datadir + "/images/status/letters-gold.png", TEXT_TEXT, 16,18);
 566   blue_text   = new Text(datadir + "/images/status/letters-blue.png", TEXT_TEXT, 16,18);
 567   red_text    = new Text(datadir + "/images/status/letters-red.png", TEXT_TEXT, 16,18);
 568   white_text  = new Text(datadir + "/images/status/letters-white.png", TEXT_TEXT, 16,18);
 569   white_small_text = new Text(datadir + "/images/status/letters-white-small.png", TEXT_TEXT, 8,9);
 570   white_big_text   = new Text(datadir + "/images/status/letters-white-big.png", TEXT_TEXT, 20,23);
 571   yellow_nums = new Text(datadir + "/images/status/numbers.png", TEXT_NUM, 32,32);
 572
 573   /* Load GUI/menu images: */
 574   checkbox = new Surface(datadir + "/images/status/checkbox.png", USE_ALPHA);
 575   checkbox_checked = new Surface(datadir + "/images/status/checkbox-checked.png", USE_ALPHA);
 576   back = new Surface(datadir + "/images/status/back.png", USE_ALPHA);
 577   arrow_left = new Surface(datadir + "/images/icons/left.png", USE_ALPHA);
 578   arrow_right = new Surface(datadir + "/images/icons/right.png", USE_ALPHA);
 579
 580   /* Load the mouse-cursor */
 581   mouse_cursor = new MouseCursor( datadir + "/images/status/mousecursor.png",1);
 582
 583 }
 584
 585 void st_general_free(void)
 586 {
 587
 588   /* Free global images: */
 589
 590   delete black_text;
 591   delete gold_text;
 592   delete white_text;
 593   delete blue_text;
 594   delete red_text;
 595   delete white_small_text;
 596   delete white_big_text;
 597
 598   /* Free GUI/menu images: */
 599   delete checkbox;
 600   delete checkbox_checked;
 601   delete back;
 602   delete arrow_left;
 603   delete arrow_right;
 604
 605   /* Free mouse-cursor */
 606   delete mouse_cursor;
 607
 608   /* Free menus */
 609   delete main_menu;
 610   delete game_menu;
 611   delete options_menu;
 612   delete highscore_menu;
 613   delete save_game_menu;
 614   delete load_game_menu;
 615 }
 616
 617 void st_video_setup(void)
 618 {
 619   if(screen != NULL)
 620     SDL_FreeSurface(screen);
 621
 622   /* Init SDL Video: */
 623
 624   if (SDL_Init(SDL_INIT_VIDEO) < 0)
 625     {
 626       fprintf(stderr,
 627               "\nError: I could not initialize video!\n"
 628               "The Simple DirectMedia error that occured was:\n"
 629               "%s\n\n", SDL_GetError());
 630       exit(1);
 631     }
 632
 633   /* Open display: */
 634   if(use_gl)
 635     st_video_setup_gl();
 636   else
 637     st_video_setup_sdl();
 638
 639   Surface::reload_all();
 640
 641   /* Set window manager stuff: */
 642   SDL_WM_SetCaption("SuperTux " VERSION, "SuperTux");
 643 }
 644
 645 void st_video_setup_sdl(void)
 646 {
 647   SDL_FreeSurface(screen);
 648
 649   if (use_fullscreen)
 650     {
 651       screen = SDL_SetVideoMode(640, 480, 0, SDL_FULLSCREEN ) ; /* | SDL_HWSURFACE); */
 652       if (screen == NULL)
 653         {
 654           fprintf(stderr,
 655                   "\nWarning: I could not set up fullscreen video for "
 656                   "640x480 mode.\n"
 657                   "The Simple DirectMedia error that occured was:\n"
 658                   "%s\n\n", SDL_GetError());
 659           use_fullscreen = false;
 660         }
 661     }
 662   else
 663     {
 664       screen = SDL_SetVideoMode(640, 480, 0, SDL_HWSURFACE | SDL_DOUBLEBUF );
 665
 666       if (screen == NULL)
 667         {
 668           fprintf(stderr,
 669                   "\nError: I could not set up video for 640x480 mode.\n"
 670                   "The Simple DirectMedia error that occured was:\n"
 671                   "%s\n\n", SDL_GetError());
 672           exit(1);
 673         }
 674     }
 675 }
 676
 677 void st_video_setup_gl(void)
 678 {
 679 #ifndef NOOPENGL
 680
 681   SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
 682   SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
 683   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
 684   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 685   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 686
 687   if (use_fullscreen)
 688     {
 689       screen = SDL_SetVideoMode(640, 480, 0, SDL_FULLSCREEN | SDL_OPENGL) ; /* | SDL_HWSURFACE); */
 690       if (screen == NULL)
 691         {
 692           fprintf(stderr,
 693                   "\nWarning: I could not set up fullscreen video for "
 694                   "640x480 mode.\n"
 695                   "The Simple DirectMedia error that occured was:\n"
 696                   "%s\n\n", SDL_GetError());
 697           use_fullscreen = false;
 698         }
 699     }
 700   else
 701     {
 702       screen = SDL_SetVideoMode(640, 480, 0, SDL_OPENGL);
 703
 704       if (screen == NULL)
 705         {
 706           fprintf(stderr,
 707                   "\nError: I could not set up video for 640x480 mode.\n"
 708                   "The Simple DirectMedia error that occured was:\n"
 709                   "%s\n\n", SDL_GetError());
 710           exit(1);
 711         }
 712     }
 713
 714   /*
 715    * Set up OpenGL for 2D rendering.
 716    */
 717   glDisable(GL_DEPTH_TEST);
 718   glDisable(GL_CULL_FACE);
 719
 720   glViewport(0, 0, screen->w, screen->h);
 721   glMatrixMode(GL_PROJECTION);
 722   glLoadIdentity();
 723   glOrtho(0, screen->w, screen->h, 0, -1.0, 1.0);
 724
 725   glMatrixMode(GL_MODELVIEW);
 726   glLoadIdentity();
 727   glTranslatef(0.0f, 0.0f, 0.0f);
 728
 729 #endif
 730
 731 }
 732
 733 void st_joystick_setup(void)
 734 {
 735
 736   /* Init Joystick: */
 737
 738   use_joystick = true;
 739
 740   if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
 741     {
 742       fprintf(stderr, "Warning: I could not initialize joystick!\n"
 743               "The Simple DirectMedia error that occured was:\n"
 744               "%s\n\n", SDL_GetError());
 745
 746       use_joystick = false;
 747     }
 748   else
 749     {
 750       /* Open joystick: */
 751       if (SDL_NumJoysticks() <= 0)
 752         {
 753           fprintf(stderr, "Warning: No joysticks are available.\n");
 754
 755           use_joystick = false;
 756         }
 757       else
 758         {
 759           js = SDL_JoystickOpen(joystick_num);
 760
 761           if (js == NULL)
 762             {
 763               fprintf(stderr, "Warning: Could not open joystick %d.\n"
 764                       "The Simple DirectMedia error that occured was:\n"
 765                       "%s\n\n", joystick_num, SDL_GetError());
 766
 767               use_joystick = false;
 768             }
 769           else
 770             {
 771               if (SDL_JoystickNumAxes(js) < 2)
 772                 {
 773                   fprintf(stderr,
 774                           "Warning: Joystick does not have enough axes!\n");
 775
 776                   use_joystick = false;
 777                 }
 778               else
 779                 {
 780                   if (SDL_JoystickNumButtons(js) < 2)
 781                     {
 782                       fprintf(stderr,
 783                               "Warning: "
 784                               "Joystick does not have enough buttons!\n");
 785
 786                       use_joystick = false;
 787                     }
 788                 }
 789             }
 790         }
 791     }
 792 }
 793
 794 void st_audio_setup(void)
 795 {
 796
 797   /* Init SDL Audio silently even if --disable-sound : */
 798
 799   if (audio_device)
 800     {
 801       if (SDL_Init(SDL_INIT_AUDIO) < 0)
 802         {
 803           /* only print out message if sound or music
 804              was not disabled at command-line
 805            */
 806           if (use_sound || use_music)
 807             {
 808               fprintf(stderr,
 809                       "\nWarning: I could not initialize audio!\n"
 810                       "The Simple DirectMedia error that occured was:\n"
 811                       "%s\n\n", SDL_GetError());
 812             }
 813           /* keep the programming logic the same :-)
 814              because in this case, use_sound & use_music' values are ignored
 815              when there's no available audio device
 816           */
 817           use_sound = false;
 818           use_music = false;
 819           audio_device = false;
 820         }
 821     }
 822
 823
 824   /* Open sound silently regarless the value of "use_sound": */
 825
 826   if (audio_device)
 827     {
 828       if (open_audio(44100, AUDIO_S16, 2, 2048) < 0)
 829         {
 830           /* only print out message if sound or music
 831              was not disabled at command-line
 832            */
 833           if (use_sound || use_music)
 834             {
 835               fprintf(stderr,
 836                       "\nWarning: I could not set up audio for 44100 Hz "
 837                       "16-bit stereo.\n"
 838                       "The Simple DirectMedia error that occured was:\n"
 839                       "%s\n\n", SDL_GetError());
 840             }
 841           use_sound = false;
 842           use_music = false;
 843           audio_device = false;
 844         }
 845     }
 846
 847 }
 848
 849
 850 /* --- SHUTDOWN --- */
 851
 852 void st_shutdown(void)
 853 {
 854   close_audio();
 855   SDL_Quit();
 856   saveconfig();
 857 }
 858
 859 /* --- ABORT! --- */
 860
 861 void st_abort(const std::string& reason, const std::string& details)
 862 {
 863   fprintf(stderr, "\nError: %s\n%s\n\n", reason.c_str(), details.c_str());
 864   st_shutdown();
 865   abort();
 866 }
 867
 868
 869 /* Set Icon (private) */
 870
 871 void seticon(void)
 872 {
 873   int masklen;
 874   Uint8 * mask;
 875   SDL_Surface * icon;
 876
 877
 878   /* Load icon into a surface: */
 879
 880   icon = IMG_Load((datadir + "/images/icon.png").c_str());
 881   if (icon == NULL)
 882     {
 883       fprintf(stderr,
 884               "\nError: I could not load the icon image: %s%s\n"
 885               "The Simple DirectMedia error that occured was:\n"
 886               "%s\n\n", datadir.c_str(), "/images/icon.png", SDL_GetError());
 887       exit(1);
 888     }
 889
 890
 891   /* Create mask: */
 892
 893   masklen = (((icon -> w) + 7) / 8) * (icon -> h);
 894   mask = (Uint8*) malloc(masklen * sizeof(Uint8));
 895   memset(mask, 0xFF, masklen);
 896
 897
 898   /* Set icon: */
 899
 900   SDL_WM_SetIcon(icon, mask);
 901
 902
 903   /* Free icon surface & mask: */
 904
 905   free(mask);
 906   SDL_FreeSurface(icon);
 907 }
 908
 909
 910 /* Parse command-line arguments: */
 911
 912 void parseargs(int argc, char * argv[])
 913 {
 914   int i;
 915
 916   loadconfig();
 917
 918   /* Parse arguments: */
 919
 920   for (i = 1; i < argc; i++)
 921     {
 922       if (strcmp(argv[i], "--fullscreen") == 0 ||
 923           strcmp(argv[i], "-f") == 0)
 924         {
 925           /* Use full screen: */
 926
 927           use_fullscreen = true;
 928         }
 929       else if (strcmp(argv[i], "--joystick") == 0 || strcmp(argv[i], "-j") == 0)
 930         {
 931           assert(i+1 < argc);
 932           joystick_num = atoi(argv[++i]);
 933         }
 934       else if (strcmp(argv[i], "--joymap") == 0)
 935         {
 936           assert(i+1 < argc);
 937           if (sscanf(argv[++i],
 938                      "%d:%d:%d:%d:%d",
 939                      &joystick_keymap.x_axis,
 940                      &joystick_keymap.y_axis,
 941                      &joystick_keymap.a_button,
 942                      &joystick_keymap.b_button,
 943                      &joystick_keymap.start_button) != 5)
 944             {
 945               puts("Warning: Invalid or incomplete joymap, should be: 'XAXIS:YAXIS:A:B:START'");
 946             }
 947           else
 948             {
 949               std::cout << "Using new joymap:\n"
 950                         << "  X-Axis:       " << joystick_keymap.x_axis << "\n"
 951                         << "  Y-Axis:       " << joystick_keymap.y_axis << "\n"
 952                         << "  A-Button:     " << joystick_keymap.a_button << "\n"
 953                         << "  B-Button:     " << joystick_keymap.b_button << "\n"
 954                         << "  Start-Button: " << joystick_keymap.start_button << std::endl;
 955             }
 956         }
 957       else if (strcmp(argv[i], "--worldmap") == 0)
 958         {
 959           launch_worldmap_mode = true;
 960         }
 961       else if (strcmp(argv[i], "--datadir") == 0
 962                || strcmp(argv[i], "-d") == 0 )
 963         {
 964           assert(i+1 < argc);
 965           datadir = argv[++i];
 966         }
 967       else if (strcmp(argv[i], "--show-fps") == 0)
 968         {
 969           /* Use full screen: */
 970
 971           show_fps = true;
 972         }
 973       else if (strcmp(argv[i], "--opengl") == 0 ||
 974                strcmp(argv[i], "-gl") == 0)
 975         {
 976 #ifndef NOOPENGL
 977           /* Use OpengGL: */
 978
 979           use_gl = true;
 980 #endif
 981         }
 982       else if (strcmp(argv[i], "--sdl") == 0)
 983           {
 984             use_gl = false;
 985           }
 986       else if (strcmp(argv[i], "--usage") == 0)
 987         {
 988           /* Show usage: */
 989
 990           usage(argv[0], 0);
 991         }
 992       else if (strcmp(argv[i], "--version") == 0)
 993         {
 994           /* Show version: */
 995           printf("SuperTux " VERSION "\n");
 996           exit(0);
 997         }
 998       else if (strcmp(argv[i], "--disable-sound") == 0)
 999         {
1000           /* Disable the compiled in sound feature */
1001           printf("Sounds disabled \n");
1002           use_sound = false;
1003         }
1004       else if (strcmp(argv[i], "--disable-music") == 0)
1005         {
1006           /* Disable the compiled in sound feature */
1007           printf("Music disabled \n");
1008           use_music = false;
1009         }
1010       else if (strcmp(argv[i], "--debug-mode") == 0)
1011         {
1012           /* Enable the debug-mode */
1013           debug_mode = true;
1014
1015         }
1016       else if (strcmp(argv[i], "--help") == 0)
1017         {     /* Show help: */
1018           puts("Super Tux " VERSION "\n"
1019                "  Please see the file \"README.txt\" for more details.\n");
1020           printf("Usage: %s [OPTIONS] FILENAME\n\n", argv[0]);
1021           puts("Display Options:\n"
1022                "  --fullscreen        Run in fullscreen mode.\n"
1023                "  --opengl            If opengl support was compiled in, this will enable\n"
1024                "                      the EXPERIMENTAL OpenGL mode.\n"
1025                "  --sdl               Use non-opengl renderer\n"
1026                "\n"
1027                "Sound Options:\n"
1028                "  --disable-sound     If sound support was compiled in,  this will\n"
1029                "                      disable sound for this session of the game.\n"
1030                "  --disable-music     Like above, but this will disable music.\n"
1031                "\n"
1032                "Misc Options:\n"
1033                "  -j, --joystick NUM  Use joystick NUM (default: 0)\n"
1034                "  --joymap XAXIS:YAXIS:A:B:START\n"
1035                "                      Define how joystick buttons and axis should be mapped\n"
1036                "  --worldmap          Start in worldmap-mode (EXPERIMENTAL)\n"
1037                "  -d, --datadir DIR   Load Game data from DIR (default: automatic)\n"
1038                "  --debug-mode        Enables the debug-mode, which is useful for developers.\n"
1039                "  --help              Display a help message summarizing command-line\n"
1040                "                      options, license and game controls.\n"
1041                "  --usage             Display a brief message summarizing command-line options.\n"
1042                "  --version           Display the version of SuperTux you're running.\n\n"
1043                );
1044           exit(0);
1045         }
1046       else if (argv[i][0] != '-')
1047         {
1048           level_startup_file = argv[i];
1049         }
1050       else
1051         {
1052           /* Unknown - complain! */
1053
1054           usage(argv[0], 1);
1055         }
1056     }
1057 }
1058
1059
1060 /* Display usage: */
1061
1062 void usage(char * prog, int ret)
1063 {
1064   FILE * fi;
1065
1066
1067   /* Determine which stream to write to: */
1068
1069   if (ret == 0)
1070     fi = stdout;
1071   else
1072     fi = stderr;
1073
1074
1075   /* Display the usage message: */
1076
1077   fprintf(fi, "Usage: %s [--fullscreen] [--opengl] [--disable-sound] [--disable-music] [--debug-mode] | [--usage | --help | --version] [--worldmap] FILENAME\n",
1078           prog);
1079
1080
1081   /* Quit! */
1082
1083   exit(ret);
1084 }
1085