src/worldmap.cpp

   1 //  $Id$
   2 //
   3 //  SuperTux -  A Jump'n Run
   4 //  Copyright (C) 2004 Ingo Ruhnke <grumbel@gmx.de>
   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 <iostream>
  21 #include <fstream>
  22 #include <vector>
  23 #include <assert.h>
  24 #include "globals.h"
  25 #include "texture.h"
  26 #include "screen.h"
  27 #include "lispreader.h"
  28 #include "gameloop.h"
  29 #include "setup.h"
  30 #include "worldmap.h"
  31 #include "resources.h"
  32
  33 namespace WorldMapNS {
  34
  35 Direction reverse_dir(Direction direction)
  36 {
  37   switch(direction)
  38     {
  39     case WEST:
  40       return EAST;
  41     case EAST:
  42       return WEST;
  43     case NORTH:
  44       return SOUTH;
  45     case SOUTH:
  46       return NORTH;
  47     case NONE:
  48       return NONE;
  49     }
  50   return NONE;
  51 }
  52
  53 std::string
  54 direction_to_string(Direction direction)
  55 {
  56   switch(direction)
  57     {
  58     case WEST:
  59       return "west";
  60     case EAST:
  61       return "east";
  62     case NORTH:
  63       return "north";
  64     case SOUTH:
  65       return "south";
  66     default:
  67       return "none";
  68     }
  69 }
  70
  71 Direction
  72 string_to_direction(const std::string& directory)
  73 {
  74   if (directory == "west")
  75     return WEST;
  76   else if (directory == "east")
  77     return EAST;
  78   else if (directory == "north")
  79     return NORTH;
  80   else if (directory == "south")
  81     return SOUTH;
  82   else
  83     return NONE;
  84 }
  85
  86 TileManager* TileManager::instance_  = 0;
  87
  88 TileManager::TileManager()
  89 {
  90   std::string stwt_filename = datadir +  "images/worldmap/antarctica.stwt";
  91   lisp_object_t* root_obj = lisp_read_from_file(stwt_filename);
  92
  93   if (!root_obj)
  94     st_abort("Couldn't load file", stwt_filename);
  95
  96   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap-tiles") == 0)
  97     {
  98       lisp_object_t* cur = lisp_cdr(root_obj);
  99
 100       while(!lisp_nil_p(cur))
 101         {
 102           lisp_object_t* element = lisp_car(cur);
 103
 104           if (strcmp(lisp_symbol(lisp_car(element)), "tile") == 0)
 105             {
 106               int id = 0;
 107               std::string filename = "<invalid>";
 108
 109               Tile* tile = new Tile;
 110               tile->north = true;
 111               tile->east  = true;
 112               tile->south = true;
 113               tile->west  = true;
 114               tile->stop  = true;
 115
 116               LispReader reader(lisp_cdr(element));
 117               reader.read_int("id",  &id);
 118               reader.read_bool("north", &tile->north);
 119               reader.read_bool("south", &tile->south);
 120               reader.read_bool("west",  &tile->west);
 121               reader.read_bool("east",  &tile->east);
 122               reader.read_bool("stop",  &tile->stop);
 123               reader.read_string("image",  &filename);
 124
 125               tile->sprite = new Surface(
 126                            datadir +  "/images/worldmap/" + filename,
 127                            USE_ALPHA);
 128
 129               if (id >= int(tiles.size()))
 130                 tiles.resize(id+1);
 131
 132               tiles[id] = tile;
 133             }
 134           else
 135             {
 136               puts("Unhandled symbol");
 137             }
 138
 139           cur = lisp_cdr(cur);
 140         }
 141     }
 142   else
 143     {
 144       assert(0);
 145     }
 146 }
 147
 148 Tile*
 149 TileManager::get(int i)
 150 {
 151   assert(i >=0 && i < int(tiles.size()));
 152   return tiles[i];
 153 }
 154
 155 Tux::Tux(WorldMap* worldmap_)
 156   : worldmap(worldmap_)
 157 {
 158   sprite = new Surface(datadir +  "/images/worldmap/tux.png", USE_ALPHA);
 159   offset = 0;
 160   moving = false;
 161   tile_pos.x = 4;
 162   tile_pos.y = 5;
 163   direction = NONE;
 164   input_direction = NONE;
 165 }
 166
 167 void
 168 Tux::draw(const Point& offset)
 169 {
 170   Point pos = get_pos();
 171   sprite->draw(pos.x + offset.x,
 172                pos.y + offset.y);
 173 }
 174
 175
 176 Point
 177 Tux::get_pos()
 178 {
 179   float x = tile_pos.x * 32;
 180   float y = tile_pos.y * 32;
 181
 182   switch(direction)
 183     {
 184     case WEST:
 185       x -= offset - 32;
 186       break;
 187     case EAST:
 188       x += offset - 32;
 189       break;
 190     case NORTH:
 191       y -= offset - 32;
 192       break;
 193     case SOUTH:
 194       y += offset - 32;
 195       break;
 196     case NONE:
 197       break;
 198     }
 199
 200   return Point((int)x, (int)y);
 201 }
 202
 203 void
 204 Tux::stop()
 205 {
 206   offset = 0;
 207   direction = NONE;
 208   moving = false;
 209 }
 210
 211 void
 212 Tux::update(float delta)
 213 {
 214   if (!moving)
 215     {
 216       if (input_direction != NONE)
 217         {
 218           WorldMap::Level* level = worldmap->at_level();
 219
 220           // We got a new direction, so lets start walking when possible
 221           Point next_tile;
 222           if ((!level || level->solved)
 223               && worldmap->path_ok(input_direction, tile_pos, &next_tile))
 224             {
 225               tile_pos = next_tile;
 226               moving = true;
 227               direction = input_direction;
 228               back_direction = reverse_dir(direction);
 229             }
 230           else if (input_direction == back_direction)
 231             {
 232               std::cout << "Back triggered" << std::endl;
 233               moving = true;
 234               direction = input_direction;
 235               tile_pos = worldmap->get_next_tile(tile_pos, direction);
 236               back_direction = reverse_dir(direction);
 237             }
 238         }
 239     }
 240   else
 241     {
 242       // Let tux walk a few pixels (20 pixel/sec)
 243       offset += 20.0f * delta;
 244
 245       if (offset > 32)
 246         { // We reached the next tile, so we check what to do now
 247           offset -= 32;
 248
 249           if (worldmap->at(tile_pos)->stop || worldmap->at_level())
 250             {
 251               stop();
 252             }
 253           else
 254             {
 255               // Walk automatically to the next tile
 256               Point next_tile;
 257               if (worldmap->path_ok(direction, tile_pos, &next_tile))
 258                 {
 259                   tile_pos = next_tile;
 260                 }
 261               else
 262                 {
 263                   puts("Tilemap data is buggy");
 264                   stop();
 265                 }
 266             }
 267         }
 268     }
 269 }
 270
 271 WorldMap::WorldMap()
 272 {
 273   tux = new Tux(this);
 274
 275   width  = 20;
 276   height = 15;
 277
 278   level_sprite = new Surface(datadir +  "/images/worldmap/levelmarker.png", USE_ALPHA);
 279   leveldot_green = new Surface(datadir +  "/images/worldmap/leveldot_green.png", USE_ALPHA);
 280   leveldot_red = new Surface(datadir +  "/images/worldmap/leveldot_red.png", USE_ALPHA);
 281
 282   input_direction = NONE;
 283   enter_level = false;
 284
 285   name = "<no file>";
 286   music = "SALCON.MOD";
 287
 288   load_map();
 289 }
 290
 291 WorldMap::~WorldMap()
 292 {
 293   delete tux;
 294 }
 295
 296 void
 297 WorldMap::load_map()
 298 {
 299   std::string filename = datadir +  "levels/default/worldmap.stwm";
 300
 301   lisp_object_t* root_obj = lisp_read_from_file(filename);
 302   if (!root_obj)
 303     st_abort("Couldn't load file", filename);
 304
 305   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap") == 0)
 306     {
 307       lisp_object_t* cur = lisp_cdr(root_obj);
 308
 309       while(!lisp_nil_p(cur))
 310         {
 311           lisp_object_t* element = lisp_car(cur);
 312
 313           if (strcmp(lisp_symbol(lisp_car(element)), "tilemap") == 0)
 314             {
 315               LispReader reader(lisp_cdr(element));
 316               reader.read_int("width",  &width);
 317               reader.read_int("height", &height);
 318               reader.read_int_vector("data", &tilemap);
 319             }
 320           else if (strcmp(lisp_symbol(lisp_car(element)), "properties") == 0)
 321             {
 322               LispReader reader(lisp_cdr(element));
 323               reader.read_string("name",  &name);
 324               reader.read_string("music", &music);
 325             }
 326           else if (strcmp(lisp_symbol(lisp_car(element)), "levels") == 0)
 327             {
 328               lisp_object_t* cur = lisp_cdr(element);
 329
 330               while(!lisp_nil_p(cur))
 331                 {
 332                   lisp_object_t* element = lisp_car(cur);
 333
 334                   if (strcmp(lisp_symbol(lisp_car(element)), "level") == 0)
 335                     {
 336                       Level level;
 337                       LispReader reader(lisp_cdr(element));
 338                       level.solved = false;
 339
 340                       level.north = true;
 341                       level.east  = true;
 342                       level.south = true;
 343                       level.west  = true;
 344
 345                       reader.read_string("name",  &level.name);
 346                       reader.read_int("x", &level.x);
 347                       reader.read_int("y", &level.y);
 348
 349                       get_level_title(&level);   // get level's title
 350
 351                       levels.push_back(level);
 352                     }
 353
 354                   cur = lisp_cdr(cur);
 355                 }
 356             }
 357           else
 358             {
 359
 360             }
 361
 362           cur = lisp_cdr(cur);
 363         }
 364     }
 365 }
 366
 367 void WorldMap::get_level_title(Levels::pointer level)
 368 {
 369 /** get level's title */
 370 level->title = "<no title>";
 371
 372 FILE * fi;
 373 lisp_object_t* root_obj = 0;
 374 fi = fopen((datadir +  "levels/" + level->name).c_str(), "r");
 375 if (fi == NULL)
 376   {
 377   perror((datadir +  "levels/" + level->name).c_str());
 378   return;
 379   }
 380
 381 lisp_stream_t stream;
 382 lisp_stream_init_file (&stream, fi);
 383 root_obj = lisp_read (&stream);
 384
 385 if (root_obj->type == LISP_TYPE_EOF || root_obj->type == LISP_TYPE_PARSE_ERROR)
 386   {
 387   printf("World: Parse Error in file %s", level->name.c_str());
 388   }
 389
 390 if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-level") == 0)
 391   {
 392   LispReader reader(lisp_cdr(root_obj));
 393   reader.read_string("name",  &level->title);
 394   }
 395
 396 fclose(fi);
 397 }
 398
 399 void
 400 WorldMap::on_escape_press()
 401 {
 402   // Show or hide the menu
 403   if(!Menu::current())
 404     Menu::set_current(worldmap_menu);
 405   else
 406     Menu::set_current(0);
 407 }
 408
 409 void
 410 WorldMap::get_input()
 411 {
 412   enter_level = false;
 413   input_direction = NONE;
 414
 415   SDL_Event event;
 416   while (SDL_PollEvent(&event))
 417     {
 418       if (Menu::current())
 419         {
 420           Menu::current()->event(event);
 421         }
 422       else
 423         {
 424           switch(event.type)
 425             {
 426             case SDL_QUIT:
 427               st_abort("Received window close", "");
 428               break;
 429
 430             case SDL_KEYDOWN:
 431               switch(event.key.keysym.sym)
 432                 {
 433                 case SDLK_ESCAPE:
 434                   on_escape_press();
 435                   break;
 436                 case SDLK_LCTRL:
 437                 case SDLK_RETURN:
 438                   enter_level = true;
 439                   break;
 440                 default:
 441                   break;
 442                 }
 443               break;
 444
 445             case SDL_JOYAXISMOTION:
 446               if (event.jaxis.axis == joystick_keymap.x_axis)
 447                 {
 448                   if (event.jaxis.value < -joystick_keymap.dead_zone)
 449                     input_direction = WEST;
 450                   else if (event.jaxis.value > joystick_keymap.dead_zone)
 451                     input_direction = EAST;
 452                 }
 453               else if (event.jaxis.axis == joystick_keymap.y_axis)
 454                 {
 455                   if (event.jaxis.value > joystick_keymap.dead_zone)
 456                     input_direction = SOUTH;
 457                   else if (event.jaxis.value < -joystick_keymap.dead_zone)
 458                     input_direction = NORTH;
 459                 }
 460               break;
 461
 462             case SDL_JOYBUTTONDOWN:
 463               if (event.jbutton.button == joystick_keymap.b_button)
 464                 enter_level = true;
 465               else if (event.jbutton.button == joystick_keymap.start_button)
 466                 on_escape_press();
 467               break;
 468
 469             default:
 470               break;
 471             }
 472         }
 473     }
 474
 475   if (!Menu::current())
 476     {
 477       Uint8 *keystate = SDL_GetKeyState(NULL);
 478
 479       if (keystate[SDLK_LEFT])
 480         input_direction = WEST;
 481       else if (keystate[SDLK_RIGHT])
 482         input_direction = EAST;
 483       else if (keystate[SDLK_UP])
 484         input_direction = NORTH;
 485       else if (keystate[SDLK_DOWN])
 486         input_direction = SOUTH;
 487     }
 488 }
 489
 490 Point
 491 WorldMap::get_next_tile(Point pos, Direction direction)
 492 {
 493   switch(direction)
 494     {
 495     case WEST:
 496       pos.x -= 1;
 497       break;
 498     case EAST:
 499       pos.x += 1;
 500       break;
 501     case NORTH:
 502       pos.y -= 1;
 503       break;
 504     case SOUTH:
 505       pos.y += 1;
 506       break;
 507     case NONE:
 508       break;
 509     }
 510   return pos;
 511 }
 512
 513 bool
 514 WorldMap::path_ok(Direction direction, Point old_pos, Point* new_pos)
 515 {
 516   *new_pos = get_next_tile(old_pos, direction);
 517
 518   if (!(new_pos->x >= 0 && new_pos->x < width
 519         && new_pos->y >= 0 && new_pos->y < height))
 520     { // New position is outsite the tilemap
 521       return false;
 522     }
 523   else
 524     { // Check if we the tile allows us to go to new_pos
 525       switch(direction)
 526         {
 527         case WEST:
 528           return (at(old_pos)->west && at(*new_pos)->east);
 529
 530         case EAST:
 531           return (at(old_pos)->east && at(*new_pos)->west);
 532
 533         case NORTH:
 534           return (at(old_pos)->north && at(*new_pos)->south);
 535
 536         case SOUTH:
 537           return (at(old_pos)->south && at(*new_pos)->north);
 538
 539         case NONE:
 540           assert(!"path_ok() can't work if direction is NONE");
 541         }
 542       return false;
 543     }
 544 }
 545
 546 void
 547 WorldMap::update()
 548 {
 549   if (enter_level && !tux->is_moving())
 550     {
 551       Level* level = at_level();
 552       if (level)
 553         {
 554           if (level->x == tux->get_tile_pos().x &&
 555               level->y == tux->get_tile_pos().y)
 556             {
 557               std::cout << "Enter the current level: " << level->name << std::endl;;
 558               GameSession session(datadir +  "levels/" + level->name,
 559                                   1, ST_GL_LOAD_LEVEL_FILE);
 560
 561               switch (session.run())
 562                 {
 563                 case GameSession::LEVEL_FINISHED:
 564                   level->solved = true;
 565                   break;
 566                 case GameSession::LEVEL_ABORT:
 567                   // Reseting the player_status might be a worthy
 568                   // consideration, but I don't think we need it
 569                   // 'cause only the bad players will use it to
 570                   // 'cheat' a few items and that isn't necesarry a
 571                   // bad thing (ie. better they continue that way,
 572                   // then stop playing the game all together since it
 573                   // is to hard)
 574                   break;
 575                 case GameSession::GAME_OVER:
 576                   quit = true;
 577                   break;
 578                 case GameSession::NONE:
 579                   // Should never be reached
 580                   break;
 581                 }
 582
 583               music_manager->play_music(song);
 584               Menu::set_current(0);
 585               if (!savegame_file.empty())
 586                 savegame(savegame_file);
 587               return;
 588             }
 589         }
 590       else
 591         {
 592           std::cout << "Nothing to enter at: "
 593                     << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << std::endl;
 594         }
 595     }
 596   else
 597     {
 598       tux->set_direction(input_direction);
 599       tux->update(0.33f);
 600     }
 601
 602   Menu* menu = Menu::current();
 603   if(menu)
 604     {
 605       menu->action();
 606
 607       if(menu == worldmap_menu)
 608         {
 609           switch (worldmap_menu->check())
 610             {
 611             case MNID_RETURNWORLDMAP: // Return to game
 612               break;
 613             case MNID_SAVEGAME:
 614               if (!savegame_file.empty())
 615                 savegame(savegame_file);
 616               break;
 617
 618             case MNID_QUITWORLDMAP: // Quit Worldmap
 619               quit = true;
 620               break;
 621             }
 622         }
 623       else if(menu == options_menu)
 624         {
 625           process_options_menu();
 626         }
 627     }
 628 }
 629
 630 Tile*
 631 WorldMap::at(Point p)
 632 {
 633   assert(p.x >= 0
 634          && p.x < width
 635          && p.y >= 0
 636          && p.y < height);
 637
 638   return TileManager::instance()->get(tilemap[width * p.y + p.x]);
 639 }
 640
 641 WorldMap::Level*
 642 WorldMap::at_level()
 643 {
 644   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 645     {
 646       if (i->x == tux->get_tile_pos().x &&
 647           i->y == tux->get_tile_pos().y)
 648         return &*i;
 649     }
 650
 651   return 0;
 652 }
 653
 654
 655 void
 656 WorldMap::draw(const Point& offset)
 657 {
 658   for(int y = 0; y < height; ++y)
 659     for(int x = 0; x < width; ++x)
 660       {
 661         Tile* tile = at(Point(x, y));
 662         tile->sprite->draw(x*32 + offset.x,
 663                            y*32 + offset.y);
 664       }
 665
 666   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 667     {
 668       if (i->solved)
 669         leveldot_green->draw(i->x*32 + offset.x,
 670                              i->y*32 + offset.y);
 671       else
 672         leveldot_red->draw(i->x*32 + offset.x,
 673                            i->y*32 + offset.y);
 674     }
 675
 676   tux->draw(offset);
 677   draw_status();
 678 }
 679
 680 void
 681 WorldMap::draw_status()
 682 {
 683   char str[80];
 684   sprintf(str, "%d", player_status.score);
 685   white_text->draw("SCORE", 0, 0);
 686   gold_text->draw(str, 96, 0);
 687
 688   sprintf(str, "%d", player_status.distros);
 689   white_text->draw_align("COINS", 320-64, 0,  A_LEFT, A_TOP);
 690   gold_text->draw_align(str, 320+64, 0, A_RIGHT, A_TOP);
 691
 692   white_text->draw("LIVES", 480, 0);
 693   if (player_status.lives >= 5)
 694     {
 695       sprintf(str, "%dx", player_status.lives);
 696       gold_text->draw(str, 585, 0);
 697       tux_life->draw(565+(18*3), 0);
 698     }
 699   else
 700     {
 701       for(int i= 0; i < player_status.lives; ++i)
 702         tux_life->draw(565+(18*i),0);
 703     }
 704
 705   if (!tux->is_moving())
 706     {
 707       for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 708         {
 709           if (i->x == tux->get_tile_pos().x &&
 710               i->y == tux->get_tile_pos().y)
 711             {
 712               white_text->draw_align(i->title.c_str(), screen->w/2, screen->h,  A_HMIDDLE, A_BOTTOM);
 713               break;
 714             }
 715         }
 716     }
 717 }
 718
 719 void
 720 WorldMap::display()
 721 {
 722   Menu::set_current(0);
 723
 724   quit = false;
 725
 726   song = music_manager->load_music(datadir +  "/music/" + music);
 727   music_manager->play_music(song);
 728
 729   while(!quit) {
 730     Point tux_pos = tux->get_pos();
 731     if (1)
 732       {
 733         offset.x = -tux_pos.x + screen->w/2;
 734         offset.y = -tux_pos.y + screen->h/2;
 735
 736         if (offset.x > 0) offset.x = 0;
 737         if (offset.y > 0) offset.y = 0;
 738
 739         if (offset.x < screen->w - width*32) offset.x = screen->w - width*32;
 740         if (offset.y < screen->h - height*32) offset.y = screen->h - height*32;
 741       }
 742
 743     draw(offset);
 744     get_input();
 745     update();
 746
 747   if(Menu::current())
 748     {
 749       Menu::current()->draw();
 750       mouse_cursor->draw();
 751     }
 752     flipscreen();
 753
 754     SDL_Delay(20);
 755   }
 756 }
 757
 758 void
 759 WorldMap::savegame(const std::string& filename)
 760 {
 761   std::cout << "savegame: " << filename << std::endl;
 762   std::ofstream out(filename.c_str());
 763
 764   int nb_solved_levels = 0;
 765   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 766     {
 767       if (i->solved)
 768         ++nb_solved_levels;
 769     }
 770
 771   out << "(supertux-savegame\n"
 772       << "  (version 1)\n"
 773       << "  (title  \"Icyisland - " << nb_solved_levels << "/" << levels.size() << "\")\n"
 774       << "  (lives   " << player_status.lives << ")\n"
 775       << "  (score   " << player_status.score << ")\n"
 776       << "  (distros " << player_status.distros << ")\n"
 777       << "  (tux     (x " << tux->get_tile_pos().x << ") (y " << tux->get_tile_pos().y << ")"
 778       << " (back \"" << direction_to_string(tux->back_direction) << "\"))\n"
 779       << "  (levels\n";
 780
 781   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 782     {
 783       if (i->solved)
 784         {
 785           out << "     (level (name \"" << i->name << "\")\n"
 786               << "            (solved #t))\n";
 787         }
 788     }
 789
 790   out << "   )\n"
 791       << " )\n\n;; EOF ;;" << std::endl;
 792 }
 793
 794 void
 795 WorldMap::loadgame(const std::string& filename)
 796 {
 797   std::cout << "loadgame: " << filename << std::endl;
 798   savegame_file = filename;
 799
 800   if (access(filename.c_str(), F_OK) == 0)
 801     {
 802       lisp_object_t* cur = lisp_read_from_file(filename);
 803
 804       if (strcmp(lisp_symbol(lisp_car(cur)), "supertux-savegame") != 0)
 805         return;
 806
 807       cur = lisp_cdr(cur);
 808       LispReader reader(cur);
 809
 810       reader.read_int("lives",  &player_status.lives);
 811       reader.read_int("score",  &player_status.score);
 812       reader.read_int("distros", &player_status.distros);
 813
 814       if (player_status.lives < 0)
 815         player_status.lives = START_LIVES;
 816
 817       lisp_object_t* tux_cur = 0;
 818       if (reader.read_lisp("tux", &tux_cur))
 819         {
 820           Point p;
 821           std::string back_str = "none";
 822
 823           LispReader tux_reader(tux_cur);
 824           tux_reader.read_int("x", &p.x);
 825           tux_reader.read_int("y", &p.y);
 826           tux_reader.read_string("back", &back_str);
 827
 828           tux->back_direction = string_to_direction(back_str);
 829           tux->set_tile_pos(p);
 830         }
 831
 832       lisp_object_t* level_cur = 0;
 833       if (reader.read_lisp("levels", &level_cur))
 834         {
 835           while(level_cur)
 836             {
 837               lisp_object_t* sym  = lisp_car(lisp_car(level_cur));
 838               lisp_object_t* data = lisp_cdr(lisp_car(level_cur));
 839
 840               if (strcmp(lisp_symbol(sym), "level") == 0)
 841                 {
 842                   std::string name;
 843                   bool solved = false;
 844
 845                   LispReader level_reader(data);
 846                   level_reader.read_string("name",   &name);
 847                   level_reader.read_bool("solved", &solved);
 848
 849                   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 850                     {
 851                       if (name == i->name)
 852                         i->solved = solved;
 853                     }
 854                 }
 855
 856               level_cur = lisp_cdr(level_cur);
 857             }
 858         }
 859     }
 860 }
 861
 862 } // namespace WorldMapNS
 863
 864 /* Local Variables: */
 865 /* mode:c++ */
 866 /* End: */
 867