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