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_keys_menu     = new Menu();
 369   options_joystick_menu = new Menu();
 370   load_game_menu = new Menu();
 371   save_game_menu = new Menu();
 372   game_menu      = new Menu();
 373   highscore_menu = new Menu();
 374   contrib_menu   = new Menu();
 375   contrib_subset_menu   = new Menu();
 376   worldmap_menu  = new Menu();
 377
 378   main_menu->set_pos(screen->w/2, 335);
 379   main_menu->additem(MN_GOTO, "Start Game",0,load_game_menu);
 380   main_menu->additem(MN_GOTO, "Contrib Levels",0,contrib_menu);
 381   main_menu->additem(MN_GOTO, "Options",0,options_menu);
 382   main_menu->additem(MN_ACTION,"Level editor",0,0);
 383   main_menu->additem(MN_ACTION,"Credits",0,0);
 384   main_menu->additem(MN_ACTION,"Quit",0,0);
 385
 386   options_menu->additem(MN_LABEL,"Options",0,0);
 387   options_menu->additem(MN_HL,"",0,0);
 388 #ifndef NOOPENGL
 389   options_menu->additem(MN_TOGGLE,"OpenGL",use_gl,0);
 390 #else
 391   options_menu->additem(MN_DEACTIVE,"OpenGL (not supported)",use_gl,0);
 392 #endif
 393   options_menu->additem(MN_TOGGLE,"Fullscreen",use_fullscreen,0);
 394   if(audio_device)
 395     {
 396       options_menu->additem(MN_TOGGLE,"Sound     ",use_sound,0);
 397       options_menu->additem(MN_TOGGLE,"Music     ",use_music,0);
 398     }
 399   else
 400     {
 401       options_menu->additem(MN_DEACTIVE,"Sound     ",use_sound,0);
 402       options_menu->additem(MN_DEACTIVE,"Music     ",use_music,0);
 403     }
 404   options_menu->additem(MN_TOGGLE,"Show FPS  ",show_fps,0);
 405   options_menu->additem(MN_GOTO,"Key Setup",0,options_keys_menu);
 406   if(use_joystick)
 407     options_menu->additem(MN_GOTO,"Joystick Setup",0,options_joystick_menu);
 408   options_menu->additem(MN_HL,"",0,0);
 409   options_menu->additem(MN_BACK,"Back",0,0);
 410
 411   options_keys_menu->additem(MN_LABEL,"Key Setup",0,0);
 412   options_keys_menu->additem(MN_HL,"",0,0);
 413   options_keys_menu->additem(MN_CONTROLFIELD,"Left move", 0,0, &keymap.left);
 414   options_keys_menu->additem(MN_CONTROLFIELD,"Right move", 0,0, &keymap.right);
 415   options_keys_menu->additem(MN_CONTROLFIELD,"Jump", 0,0, &keymap.jump);
 416   options_keys_menu->additem(MN_CONTROLFIELD,"Duck", 0,0, &keymap.duck);
 417   options_keys_menu->additem(MN_CONTROLFIELD,"Power", 0,0, &keymap.fire);
 418   options_keys_menu->additem(MN_HL,"",0,0);
 419   options_keys_menu->additem(MN_BACK,"Back",0,0);
 420
 421   if(use_joystick)
 422     {
 423     options_joystick_menu->additem(MN_LABEL,"Joystick Setup",0,0);
 424     options_joystick_menu->additem(MN_HL,"",0,0);
 425     options_joystick_menu->additem(MN_CONTROLFIELD,"X axis", 0,0, &joystick_keymap.x_axis);
 426     options_joystick_menu->additem(MN_CONTROLFIELD,"Y axis", 0,0, &joystick_keymap.y_axis);
 427     options_joystick_menu->additem(MN_CONTROLFIELD,"A button", 0,0, &joystick_keymap.a_button);
 428     options_joystick_menu->additem(MN_CONTROLFIELD,"B button", 0,0, &joystick_keymap.b_button);
 429     options_joystick_menu->additem(MN_CONTROLFIELD,"Start", 0,0, &joystick_keymap.start_button);
 430     options_joystick_menu->additem(MN_CONTROLFIELD,"DeadZone", 0,0, &joystick_keymap.dead_zone);
 431     options_joystick_menu->additem(MN_HL,"",0,0);
 432     options_joystick_menu->additem(MN_BACK,"Back",0,0);
 433     }
 434
 435   load_game_menu->additem(MN_LABEL,"Start Game",0,0);
 436   load_game_menu->additem(MN_HL,"",0,0);
 437   load_game_menu->additem(MN_DEACTIVE,"Slot 1",0,0);
 438   load_game_menu->additem(MN_DEACTIVE,"Slot 2",0,0);
 439   load_game_menu->additem(MN_DEACTIVE,"Slot 3",0,0);
 440   load_game_menu->additem(MN_DEACTIVE,"Slot 4",0,0);
 441   load_game_menu->additem(MN_DEACTIVE,"Slot 5",0,0);
 442   load_game_menu->additem(MN_HL,"",0,0);
 443   load_game_menu->additem(MN_BACK,"Back",0,0);
 444
 445   save_game_menu->additem(MN_LABEL,"Save Game",0,0);
 446   save_game_menu->additem(MN_HL,"",0,0);
 447   save_game_menu->additem(MN_DEACTIVE,"Slot 1",0,0);
 448   save_game_menu->additem(MN_DEACTIVE,"Slot 2",0,0);
 449   save_game_menu->additem(MN_DEACTIVE,"Slot 3",0,0);
 450   save_game_menu->additem(MN_DEACTIVE,"Slot 4",0,0);
 451   save_game_menu->additem(MN_DEACTIVE,"Slot 5",0,0);
 452   save_game_menu->additem(MN_HL,"",0,0);
 453   save_game_menu->additem(MN_BACK,"Back",0,0);
 454
 455   game_menu->additem(MN_LABEL,"Pause",0,0);
 456   game_menu->additem(MN_HL,"",0,0);
 457   game_menu->additem(MN_ACTION,"Continue",0,0);
 458   game_menu->additem(MN_GOTO,"Options",0,options_menu);
 459   game_menu->additem(MN_HL,"",0,0);
 460   game_menu->additem(MN_ACTION,"Abort Level",0,0);
 461
 462   worldmap_menu->additem(MN_LABEL,"Pause",0,0);
 463   worldmap_menu->additem(MN_HL,"",0,0);
 464   worldmap_menu->additem(MN_ACTION,"Continue",0,0);
 465   worldmap_menu->additem(MN_ACTION,"Save",0,0);
 466   worldmap_menu->additem(MN_GOTO,"Options",0,options_menu);
 467   worldmap_menu->additem(MN_HL,"",0,0);
 468   worldmap_menu->additem(MN_ACTION,"Quit Game",0,0);
 469
 470   highscore_menu->additem(MN_TEXTFIELD,"Enter your name:",0,0);
 471 }
 472
 473 void update_load_save_game_menu(Menu* pmenu)
 474 {
 475   for(int i = 2; i < 7; ++i)
 476     {
 477       // FIXME: Insert a real savegame struct/class here instead of
 478       // doing string vodoo
 479       std::string tmp = slotinfo(i - 1);
 480       pmenu->item[i].kind = MN_ACTION;
 481       pmenu->item[i].change_text(tmp.c_str());
 482     }
 483 }
 484
 485 bool process_load_game_menu()
 486 {
 487   int slot = load_game_menu->check();
 488
 489   if(slot != -1 && load_game_menu->get_item(slot).kind == MN_ACTION)
 490     {
 491       WorldMapNS::WorldMap worldmap;
 492
 493       char slotfile[1024];
 494       snprintf(slotfile, 1024, "%s/slot%d.stsg", st_save_dir, slot-1);
 495
 496       // Load the game or at least set the savegame_file variable
 497       worldmap.loadgame(slotfile);
 498
 499       worldmap.display();
 500
 501       Menu::set_current(main_menu);
 502
 503       st_pause_ticks_stop();
 504       return true;
 505     }
 506   else
 507     {
 508       return false;
 509     }
 510 }
 511
 512 /* Handle changes made to global settings in the options menu. */
 513 void process_options_menu(void)
 514 {
 515   switch (options_menu->check())
 516     {
 517     case 2:
 518 #ifndef NOOPENGL
 519       if(use_gl != options_menu->item[2].toggled)
 520         {
 521           use_gl = !use_gl;
 522           st_video_setup();
 523         }
 524 #endif
 525       break;
 526     case 3:
 527       if(use_fullscreen != options_menu->item[3].toggled)
 528         {
 529           use_fullscreen = !use_fullscreen;
 530           st_video_setup();
 531         }
 532       break;
 533     case 4:
 534       if(use_sound != options_menu->item[4].toggled)
 535         use_sound = !use_sound;
 536       break;
 537     case 5:
 538       if(use_music != options_menu->item[5].toggled)
 539         {
 540           enable_music(options_menu->item[5].toggled);
 541         }
 542       break;
 543     case 6:
 544       if(show_fps != options_menu->item[6].toggled)
 545         show_fps = !show_fps;
 546       break;
 547     }
 548 }
 549
 550 void st_general_setup(void)
 551 {
 552   /* Seed random number generator: */
 553
 554   srand(SDL_GetTicks());
 555
 556   /* Set icon image: */
 557
 558   seticon();
 559
 560   /* Unicode needed for input handling: */
 561
 562   SDL_EnableUNICODE(1);
 563
 564   /* Load global images: */
 565
 566   black_text  = new Text(datadir + "/images/status/letters-black.png", TEXT_TEXT, 16,18);
 567   gold_text   = new Text(datadir + "/images/status/letters-gold.png", TEXT_TEXT, 16,18);
 568   blue_text   = new Text(datadir + "/images/status/letters-blue.png", TEXT_TEXT, 16,18);
 569   red_text    = new Text(datadir + "/images/status/letters-red.png", TEXT_TEXT, 16,18);
 570   white_text  = new Text(datadir + "/images/status/letters-white.png", TEXT_TEXT, 16,18);
 571   white_small_text = new Text(datadir + "/images/status/letters-white-small.png", TEXT_TEXT, 8,9);
 572   white_big_text   = new Text(datadir + "/images/status/letters-white-big.png", TEXT_TEXT, 20,23);
 573   yellow_nums = new Text(datadir + "/images/status/numbers.png", TEXT_NUM, 32,32);
 574
 575   /* Load GUI/menu images: */
 576   checkbox = new Surface(datadir + "/images/status/checkbox.png", USE_ALPHA);
 577   checkbox_checked = new Surface(datadir + "/images/status/checkbox-checked.png", USE_ALPHA);
 578   back = new Surface(datadir + "/images/status/back.png", USE_ALPHA);
 579   arrow_left = new Surface(datadir + "/images/icons/left.png", USE_ALPHA);
 580   arrow_right = new Surface(datadir + "/images/icons/right.png", USE_ALPHA);
 581
 582   /* Load the mouse-cursor */
 583   mouse_cursor = new MouseCursor( datadir + "/images/status/mousecursor.png",1);
 584
 585 }
 586
 587 void st_general_free(void)
 588 {
 589
 590   /* Free global images: */
 591
 592   delete black_text;
 593   delete gold_text;
 594   delete white_text;
 595   delete blue_text;
 596   delete red_text;
 597   delete white_small_text;
 598   delete white_big_text;
 599
 600   /* Free GUI/menu images: */
 601   delete checkbox;
 602   delete checkbox_checked;
 603   delete back;
 604   delete arrow_left;
 605   delete arrow_right;
 606
 607   /* Free mouse-cursor */
 608   delete mouse_cursor;
 609
 610   /* Free menus */
 611   delete main_menu;
 612   delete game_menu;
 613   delete options_menu;
 614   delete highscore_menu;
 615   delete save_game_menu;
 616   delete load_game_menu;
 617 }
 618
 619 void st_video_setup(void)
 620 {
 621   if(screen != NULL)
 622     SDL_FreeSurface(screen);
 623
 624   /* Init SDL Video: */
 625
 626   if (SDL_Init(SDL_INIT_VIDEO) < 0)
 627     {
 628       fprintf(stderr,
 629               "\nError: I could not initialize video!\n"
 630               "The Simple DirectMedia error that occured was:\n"
 631               "%s\n\n", SDL_GetError());
 632       exit(1);
 633     }
 634
 635   /* Open display: */
 636   if(use_gl)
 637     st_video_setup_gl();
 638   else
 639     st_video_setup_sdl();
 640
 641   Surface::reload_all();
 642
 643   /* Set window manager stuff: */
 644   SDL_WM_SetCaption("SuperTux " VERSION, "SuperTux");
 645 }
 646
 647 void st_video_setup_sdl(void)
 648 {
 649   SDL_FreeSurface(screen);
 650
 651   if (use_fullscreen)
 652     {
 653       screen = SDL_SetVideoMode(640, 480, 0, SDL_FULLSCREEN ) ; /* | SDL_HWSURFACE); */
 654       if (screen == NULL)
 655         {
 656           fprintf(stderr,
 657                   "\nWarning: I could not set up fullscreen video for "
 658                   "640x480 mode.\n"
 659                   "The Simple DirectMedia error that occured was:\n"
 660                   "%s\n\n", SDL_GetError());
 661           use_fullscreen = false;
 662         }
 663     }
 664   else
 665     {
 666       screen = SDL_SetVideoMode(640, 480, 0, SDL_HWSURFACE | SDL_DOUBLEBUF );
 667
 668       if (screen == NULL)
 669         {
 670           fprintf(stderr,
 671                   "\nError: I could not set up video for 640x480 mode.\n"
 672                   "The Simple DirectMedia error that occured was:\n"
 673                   "%s\n\n", SDL_GetError());
 674           exit(1);
 675         }
 676     }
 677 }
 678
 679 void st_video_setup_gl(void)
 680 {
 681 #ifndef NOOPENGL
 682
 683   SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
 684   SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
 685   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
 686   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 687   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 688
 689   if (use_fullscreen)
 690     {
 691       screen = SDL_SetVideoMode(640, 480, 0, SDL_FULLSCREEN | SDL_OPENGL) ; /* | SDL_HWSURFACE); */
 692       if (screen == NULL)
 693         {
 694           fprintf(stderr,
 695                   "\nWarning: I could not set up fullscreen video for "
 696                   "640x480 mode.\n"
 697                   "The Simple DirectMedia error that occured was:\n"
 698                   "%s\n\n", SDL_GetError());
 699           use_fullscreen = false;
 700         }
 701     }
 702   else
 703     {
 704       screen = SDL_SetVideoMode(640, 480, 0, SDL_OPENGL);
 705
 706       if (screen == NULL)
 707         {
 708           fprintf(stderr,
 709                   "\nError: I could not set up video for 640x480 mode.\n"
 710                   "The Simple DirectMedia error that occured was:\n"
 711                   "%s\n\n", SDL_GetError());
 712           exit(1);
 713         }
 714     }
 715
 716   /*
 717    * Set up OpenGL for 2D rendering.
 718    */
 719   glDisable(GL_DEPTH_TEST);
 720   glDisable(GL_CULL_FACE);
 721
 722   glViewport(0, 0, screen->w, screen->h);
 723   glMatrixMode(GL_PROJECTION);
 724   glLoadIdentity();
 725   glOrtho(0, screen->w, screen->h, 0, -1.0, 1.0);
 726
 727   glMatrixMode(GL_MODELVIEW);
 728   glLoadIdentity();
 729   glTranslatef(0.0f, 0.0f, 0.0f);
 730
 731 #endif
 732
 733 }
 734
 735 void st_joystick_setup(void)
 736 {
 737
 738   /* Init Joystick: */
 739
 740   use_joystick = true;
 741
 742   if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
 743     {
 744       fprintf(stderr, "Warning: I could not initialize joystick!\n"
 745               "The Simple DirectMedia error that occured was:\n"
 746               "%s\n\n", SDL_GetError());
 747
 748       use_joystick = false;
 749     }
 750   else
 751     {
 752       /* Open joystick: */
 753       if (SDL_NumJoysticks() <= 0)
 754         {
 755           fprintf(stderr, "Warning: No joysticks are available.\n");
 756
 757           use_joystick = false;
 758         }
 759       else
 760         {
 761           js = SDL_JoystickOpen(joystick_num);
 762
 763           if (js == NULL)
 764             {
 765               fprintf(stderr, "Warning: Could not open joystick %d.\n"
 766                       "The Simple DirectMedia error that occured was:\n"
 767                       "%s\n\n", joystick_num, SDL_GetError());
 768
 769               use_joystick = false;
 770             }
 771           else
 772             {
 773               if (SDL_JoystickNumAxes(js) < 2)
 774                 {
 775                   fprintf(stderr,
 776                           "Warning: Joystick does not have enough axes!\n");
 777
 778                   use_joystick = false;
 779                 }
 780               else
 781                 {
 782                   if (SDL_JoystickNumButtons(js) < 2)
 783                     {
 784                       fprintf(stderr,
 785                               "Warning: "
 786                               "Joystick does not have enough buttons!\n");
 787
 788                       use_joystick = false;
 789                     }
 790                 }
 791             }
 792         }
 793     }
 794 }
 795
 796 void st_audio_setup(void)
 797 {
 798
 799   /* Init SDL Audio silently even if --disable-sound : */
 800
 801   if (audio_device)
 802     {
 803       if (SDL_Init(SDL_INIT_AUDIO) < 0)
 804         {
 805           /* only print out message if sound or music
 806              was not disabled at command-line
 807            */
 808           if (use_sound || use_music)
 809             {
 810               fprintf(stderr,
 811                       "\nWarning: I could not initialize audio!\n"
 812                       "The Simple DirectMedia error that occured was:\n"
 813                       "%s\n\n", SDL_GetError());
 814             }
 815           /* keep the programming logic the same :-)
 816              because in this case, use_sound & use_music' values are ignored
 817              when there's no available audio device
 818           */
 819           use_sound = false;
 820           use_music = false;
 821           audio_device = false;
 822         }
 823     }
 824
 825
 826   /* Open sound silently regarless the value of "use_sound": */
 827
 828   if (audio_device)
 829     {
 830       if (open_audio(44100, AUDIO_S16, 2, 2048) < 0)
 831         {
 832           /* only print out message if sound or music
 833              was not disabled at command-line
 834            */
 835           if (use_sound || use_music)
 836             {
 837               fprintf(stderr,
 838                       "\nWarning: I could not set up audio for 44100 Hz "
 839                       "16-bit stereo.\n"
 840                       "The Simple DirectMedia error that occured was:\n"
 841                       "%s\n\n", SDL_GetError());
 842             }
 843           use_sound = false;
 844           use_music = false;
 845           audio_device = false;
 846         }
 847     }
 848
 849 }
 850
 851
 852 /* --- SHUTDOWN --- */
 853
 854 void st_shutdown(void)
 855 {
 856   close_audio();
 857   SDL_Quit();
 858   saveconfig();
 859 }
 860
 861 /* --- ABORT! --- */
 862
 863 void st_abort(const std::string& reason, const std::string& details)
 864 {
 865   fprintf(stderr, "\nError: %s\n%s\n\n", reason.c_str(), details.c_str());
 866   st_shutdown();
 867   abort();
 868 }
 869
 870
 871 /* Set Icon (private) */
 872
 873 void seticon(void)
 874 {
 875 //  int masklen;
 876 //  Uint8 * mask;
 877   SDL_Surface * icon;
 878
 879
 880   /* Load icon into a surface: */
 881
 882   icon = IMG_Load((datadir + "/images/icon.xpm").c_str());
 883   if (icon == NULL)
 884     {
 885       fprintf(stderr,
 886               "\nError: I could not load the icon image: %s%s\n"
 887               "The Simple DirectMedia error that occured was:\n"
 888               "%s\n\n", datadir.c_str(), "/images/icon.xpm", SDL_GetError());
 889       exit(1);
 890     }
 891
 892
 893   /* Create mask: */
 894 /*
 895   masklen = (((icon -> w) + 7) / 8) * (icon -> h);
 896   mask = (Uint8*) malloc(masklen * sizeof(Uint8));
 897   memset(mask, 0xFF, masklen);
 898 */
 899
 900   /* Set icon: */
 901
 902   SDL_WM_SetIcon(icon, NULL);//mask);
 903
 904
 905   /* Free icon surface & mask: */
 906
 907 //  free(mask);
 908   SDL_FreeSurface(icon);
 909 }
 910
 911
 912 /* Parse command-line arguments: */
 913
 914 void parseargs(int argc, char * argv[])
 915 {
 916   int i;
 917
 918   loadconfig();
 919
 920   /* Parse arguments: */
 921
 922   for (i = 1; i < argc; i++)
 923     {
 924       if (strcmp(argv[i], "--fullscreen") == 0 ||
 925           strcmp(argv[i], "-f") == 0)
 926         {
 927           /* Use full screen: */
 928
 929           use_fullscreen = true;
 930         }
 931       else if (strcmp(argv[i], "--joystick") == 0 || strcmp(argv[i], "-j") == 0)
 932         {
 933           assert(i+1 < argc);
 934           joystick_num = atoi(argv[++i]);
 935         }
 936       else if (strcmp(argv[i], "--joymap") == 0)
 937         {
 938           assert(i+1 < argc);
 939           if (sscanf(argv[++i],
 940                      "%d:%d:%d:%d:%d",
 941                      &joystick_keymap.x_axis,
 942                      &joystick_keymap.y_axis,
 943                      &joystick_keymap.a_button,
 944                      &joystick_keymap.b_button,
 945                      &joystick_keymap.start_button) != 5)
 946             {
 947               puts("Warning: Invalid or incomplete joymap, should be: 'XAXIS:YAXIS:A:B:START'");
 948             }
 949           else
 950             {
 951               std::cout << "Using new joymap:\n"
 952                         << "  X-Axis:       " << joystick_keymap.x_axis << "\n"
 953                         << "  Y-Axis:       " << joystick_keymap.y_axis << "\n"
 954                         << "  A-Button:     " << joystick_keymap.a_button << "\n"
 955                         << "  B-Button:     " << joystick_keymap.b_button << "\n"
 956                         << "  Start-Button: " << joystick_keymap.start_button << std::endl;
 957             }
 958         }
 959       else if (strcmp(argv[i], "--worldmap") == 0)
 960         {
 961           launch_worldmap_mode = true;
 962         }
 963       else if (strcmp(argv[i], "--datadir") == 0
 964                || strcmp(argv[i], "-d") == 0 )
 965         {
 966           assert(i+1 < argc);
 967           datadir = argv[++i];
 968         }
 969       else if (strcmp(argv[i], "--show-fps") == 0)
 970         {
 971           /* Use full screen: */
 972
 973           show_fps = true;
 974         }
 975       else if (strcmp(argv[i], "--opengl") == 0 ||
 976                strcmp(argv[i], "-gl") == 0)
 977         {
 978 #ifndef NOOPENGL
 979           /* Use OpengGL: */
 980
 981           use_gl = true;
 982 #endif
 983         }
 984       else if (strcmp(argv[i], "--sdl") == 0)
 985           {
 986             use_gl = false;
 987           }
 988       else if (strcmp(argv[i], "--usage") == 0)
 989         {
 990           /* Show usage: */
 991
 992           usage(argv[0], 0);
 993         }
 994       else if (strcmp(argv[i], "--version") == 0)
 995         {
 996           /* Show version: */
 997           printf("SuperTux " VERSION "\n");
 998           exit(0);
 999         }
1000       else if (strcmp(argv[i], "--disable-sound") == 0)
1001         {
1002           /* Disable the compiled in sound feature */
1003           printf("Sounds disabled \n");
1004           use_sound = false;
1005           audio_device = false;
1006         }
1007       else if (strcmp(argv[i], "--disable-music") == 0)
1008         {
1009           /* Disable the compiled in sound feature */
1010           printf("Music disabled \n");
1011           use_music = false;
1012         }
1013       else if (strcmp(argv[i], "--debug-mode") == 0)
1014         {
1015           /* Enable the debug-mode */
1016           debug_mode = true;
1017
1018         }
1019       else if (strcmp(argv[i], "--help") == 0)
1020         {     /* Show help: */
1021           puts("Super Tux " VERSION "\n"
1022                "  Please see the file \"README.txt\" for more details.\n");
1023           printf("Usage: %s [OPTIONS] FILENAME\n\n", argv[0]);
1024           puts("Display Options:\n"
1025                "  --fullscreen        Run in fullscreen mode.\n"
1026                "  --opengl            If opengl support was compiled in, this will enable\n"
1027                "                      the EXPERIMENTAL OpenGL mode.\n"
1028                "  --sdl               Use non-opengl renderer\n"
1029                "\n"
1030                "Sound Options:\n"
1031                "  --disable-sound     If sound support was compiled in,  this will\n"
1032                "                      disable sound for this session of the game.\n"
1033                "  --disable-music     Like above, but this will disable music.\n"
1034                "\n"
1035                "Misc Options:\n"
1036                "  -j, --joystick NUM  Use joystick NUM (default: 0)\n"
1037                "  --joymap XAXIS:YAXIS:A:B:START\n"
1038                "                      Define how joystick buttons and axis should be mapped\n"
1039                "  --worldmap          Start in worldmap-mode (EXPERIMENTAL)\n"
1040                "  -d, --datadir DIR   Load Game data from DIR (default: automatic)\n"
1041                "  --debug-mode        Enables the debug-mode, which is useful for developers.\n"
1042                "  --help              Display a help message summarizing command-line\n"
1043                "                      options, license and game controls.\n"
1044                "  --usage             Display a brief message summarizing command-line options.\n"
1045                "  --version           Display the version of SuperTux you're running.\n\n"
1046                );
1047           exit(0);
1048         }
1049       else if (argv[i][0] != '-')
1050         {
1051           level_startup_file = argv[i];
1052         }
1053       else
1054         {
1055           /* Unknown - complain! */
1056
1057           usage(argv[0], 1);
1058         }
1059     }
1060 }
1061
1062
1063 /* Display usage: */
1064
1065 void usage(char * prog, int ret)
1066 {
1067   FILE * fi;
1068
1069
1070   /* Determine which stream to write to: */
1071
1072   if (ret == 0)
1073     fi = stdout;
1074   else
1075     fi = stderr;
1076
1077
1078   /* Display the usage message: */
1079
1080   fprintf(fi, "Usage: %s [--fullscreen] [--opengl] [--disable-sound] [--disable-music] [--debug-mode] | [--usage | --help | --version] [--worldmap] FILENAME\n",
1081           prog);
1082
1083
1084   /* Quit! */
1085
1086   exit(ret);
1087 }
1088