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()
  87 {
  88   std::string stwt_filename = datadir +  "/images/worldmap/antarctica.stwt";
  89   lisp_object_t* root_obj = lisp_read_from_file(stwt_filename);
  90
  91   if (!root_obj)
  92     st_abort("Couldn't load file", stwt_filename);
  93
  94   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap-tiles") == 0)
  95     {
  96       lisp_object_t* cur = lisp_cdr(root_obj);
  97
  98       while(!lisp_nil_p(cur))
  99         {
 100           lisp_object_t* element = lisp_car(cur);
 101
 102           if (strcmp(lisp_symbol(lisp_car(element)), "tile") == 0)
 103             {
 104               int id = 0;
 105               std::string filename = "<invalid>";
 106
 107               Tile* tile = new Tile;
 108               tile->north = true;
 109               tile->east  = true;
 110               tile->south = true;
 111               tile->west  = true;
 112               tile->stop  = true;
 113               tile->auto_walk = false;
 114
 115               LispReader reader(lisp_cdr(element));
 116               reader.read_int("id",  &id);
 117               reader.read_bool("north", &tile->north);
 118               reader.read_bool("south", &tile->south);
 119               reader.read_bool("west",  &tile->west);
 120               reader.read_bool("east",  &tile->east);
 121               reader.read_bool("stop",  &tile->stop);
 122               reader.read_bool("auto-walk",  &tile->auto_walk);
 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   lisp_free(root_obj);
 148 }
 149
 150 TileManager::~TileManager()
 151 {
 152   for(std::vector<Tile*>::iterator i = tiles.begin(); i != tiles.end(); ++i)
 153     delete *i;
 154 }
 155
 156 Tile*
 157 TileManager::get(int i)
 158 {
 159   assert(i >=0 && i < int(tiles.size()));
 160   return tiles[i];
 161 }
 162
 163 //---------------------------------------------------------------------------
 164
 165 Tux::Tux(WorldMap* worldmap_)
 166   : worldmap(worldmap_)
 167 {
 168   largetux_sprite = new Surface(datadir +  "/images/worldmap/tux.png", USE_ALPHA);
 169   firetux_sprite = new Surface(datadir +  "/images/worldmap/firetux.png", USE_ALPHA);
 170   smalltux_sprite = new Surface(datadir +  "/images/worldmap/smalltux.png", USE_ALPHA);
 171
 172   offset = 0;
 173   moving = false;
 174   tile_pos.x = 4;
 175   tile_pos.y = 5;
 176   direction = NONE;
 177   input_direction = NONE;
 178 }
 179
 180 Tux::~Tux()
 181 {
 182   delete smalltux_sprite;
 183   delete firetux_sprite;
 184   delete largetux_sprite;
 185 }
 186
 187 void
 188 Tux::draw(const Point& offset)
 189 {
 190   Point pos = get_pos();
 191   switch (player_status.bonus)
 192     {
 193     case PlayerStatus::GROWUP_BONUS:
 194       largetux_sprite->draw(pos.x + offset.x,
 195                             pos.y + offset.y - 10);
 196       break;
 197     case PlayerStatus::FLOWER_BONUS:
 198       firetux_sprite->draw(pos.x + offset.x,
 199                            pos.y + offset.y - 10);
 200       break;
 201     case PlayerStatus::NO_BONUS:
 202       smalltux_sprite->draw(pos.x + offset.x,
 203                             pos.y + offset.y - 10);
 204       break;
 205     }
 206 }
 207
 208
 209 Point
 210 Tux::get_pos()
 211 {
 212   float x = tile_pos.x * 32;
 213   float y = tile_pos.y * 32;
 214
 215   switch(direction)
 216     {
 217     case WEST:
 218       x -= offset - 32;
 219       break;
 220     case EAST:
 221       x += offset - 32;
 222       break;
 223     case NORTH:
 224       y -= offset - 32;
 225       break;
 226     case SOUTH:
 227       y += offset - 32;
 228       break;
 229     case NONE:
 230       break;
 231     }
 232
 233   return Point((int)x, (int)y);
 234 }
 235
 236 void
 237 Tux::stop()
 238 {
 239   offset = 0;
 240   direction = NONE;
 241   moving = false;
 242 }
 243
 244 void
 245 Tux::update(float delta)
 246 {
 247   if (!moving)
 248     {
 249       if (input_direction != NONE)
 250         {
 251           WorldMap::Level* level = worldmap->at_level();
 252
 253           // We got a new direction, so lets start walking when possible
 254           Point next_tile;
 255           if ((!level || level->solved)
 256               && worldmap->path_ok(input_direction, tile_pos, &next_tile))
 257             {
 258               tile_pos = next_tile;
 259               moving = true;
 260               direction = input_direction;
 261               back_direction = reverse_dir(direction);
 262             }
 263           else if (input_direction == back_direction)
 264             {
 265               std::cout << "Back triggered" << std::endl;
 266               moving = true;
 267               direction = input_direction;
 268               tile_pos = worldmap->get_next_tile(tile_pos, direction);
 269               back_direction = reverse_dir(direction);
 270             }
 271         }
 272     }
 273   else
 274     {
 275       // Let tux walk a few pixels (20 pixel/sec)
 276       offset += 20.0f * delta;
 277
 278       if (offset > 32)
 279         { // We reached the next tile, so we check what to do now
 280           offset -= 32;
 281
 282           if (worldmap->at(tile_pos)->stop || worldmap->at_level())
 283             {
 284               stop();
 285             }
 286           else
 287             {
 288               if (worldmap->at(tile_pos)->auto_walk)
 289                 { // Turn to a new direction
 290                   Tile* tile = worldmap->at(tile_pos);
 291                   Direction dir = NONE;
 292
 293                   if (tile->north && back_direction != NORTH)
 294                     dir = NORTH;
 295                   else if (tile->south && back_direction != SOUTH)
 296                     dir = SOUTH;
 297                   else if (tile->east && back_direction != EAST)
 298                     dir = EAST;
 299                   else if (tile->west && back_direction != WEST)
 300                     dir = WEST;
 301
 302                   if (dir != NONE)
 303                     {
 304                       direction = dir;
 305                       back_direction = reverse_dir(direction);
 306                     }
 307                   else
 308                     {
 309                       // Should never be reached if tiledata is good
 310                       stop();
 311                       return;
 312                     }
 313                 }
 314
 315               // Walk automatically to the next tile
 316               Point next_tile;
 317               if (worldmap->path_ok(direction, tile_pos, &next_tile))
 318                 {
 319                   tile_pos = next_tile;
 320                 }
 321               else
 322                 {
 323                   puts("Tilemap data is buggy");
 324                   stop();
 325                 }
 326             }
 327         }
 328     }
 329 }
 330
 331 //---------------------------------------------------------------------------
 332 Tile::Tile()
 333 {
 334 }
 335
 336 Tile::~Tile()
 337 {
 338   delete sprite;
 339 }
 340
 341 //---------------------------------------------------------------------------
 342
 343 WorldMap::WorldMap()
 344 {
 345   tile_manager = new TileManager();
 346   tux = new Tux(this);
 347
 348   width  = 20;
 349   height = 15;
 350
 351   level_sprite = new Surface(datadir +  "/images/worldmap/levelmarker.png", USE_ALPHA);
 352   leveldot_green = new Surface(datadir +  "/images/worldmap/leveldot_green.png", USE_ALPHA);
 353   leveldot_red = new Surface(datadir +  "/images/worldmap/leveldot_red.png", USE_ALPHA);
 354
 355   input_direction = NONE;
 356   enter_level = false;
 357
 358   name = "<no file>";
 359   music = "SALCON.MOD";
 360
 361   load_map();
 362 }
 363
 364 WorldMap::~WorldMap()
 365 {
 366   delete tux;
 367   delete tile_manager;
 368
 369   delete level_sprite;
 370   delete leveldot_green;
 371   delete leveldot_red;
 372 }
 373
 374 void
 375 WorldMap::load_map()
 376 {
 377   std::string filename = datadir +  "/levels/default/worldmap.stwm";
 378
 379   lisp_object_t* root_obj = lisp_read_from_file(filename);
 380   if (!root_obj)
 381     st_abort("Couldn't load file", filename);
 382
 383   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap") == 0)
 384     {
 385       lisp_object_t* cur = lisp_cdr(root_obj);
 386
 387       while(!lisp_nil_p(cur))
 388         {
 389           lisp_object_t* element = lisp_car(cur);
 390
 391           if (strcmp(lisp_symbol(lisp_car(element)), "tilemap") == 0)
 392             {
 393               LispReader reader(lisp_cdr(element));
 394               reader.read_int("width",  &width);
 395               reader.read_int("height", &height);
 396               reader.read_int_vector("data", &tilemap);
 397             }
 398           else if (strcmp(lisp_symbol(lisp_car(element)), "properties") == 0)
 399             {
 400               LispReader reader(lisp_cdr(element));
 401               reader.read_string("name",  &name);
 402               reader.read_string("music", &music);
 403             }
 404           else if (strcmp(lisp_symbol(lisp_car(element)), "levels") == 0)
 405             {
 406               lisp_object_t* cur = lisp_cdr(element);
 407
 408               while(!lisp_nil_p(cur))
 409                 {
 410                   lisp_object_t* element = lisp_car(cur);
 411
 412                   if (strcmp(lisp_symbol(lisp_car(element)), "level") == 0)
 413                     {
 414                       Level level;
 415                       LispReader reader(lisp_cdr(element));
 416                       level.solved = false;
 417
 418                       level.north = true;
 419                       level.east  = true;
 420                       level.south = true;
 421                       level.west  = true;
 422
 423                       reader.read_string("extro-filename",  &level.extro_filename);
 424                       reader.read_string("name",  &level.name);
 425                       reader.read_int("x", &level.x);
 426                       reader.read_int("y", &level.y);
 427
 428                       get_level_title(&level);   // get level's title
 429
 430                       levels.push_back(level);
 431                     }
 432
 433                   cur = lisp_cdr(cur);
 434                 }
 435             }
 436           else
 437             {
 438
 439             }
 440
 441           cur = lisp_cdr(cur);
 442         }
 443     }
 444
 445     lisp_free(root_obj);
 446 }
 447
 448 void WorldMap::get_level_title(Levels::pointer level)
 449 {
 450   /** get level's title */
 451   level->title = "<no title>";
 452
 453   FILE * fi;
 454   lisp_object_t* root_obj = 0;
 455   fi = fopen((datadir +  "/levels/" + level->name).c_str(), "r");
 456   if (fi == NULL)
 457   {
 458     perror((datadir +  "/levels/" + level->name).c_str());
 459     return;
 460   }
 461
 462   lisp_stream_t stream;
 463   lisp_stream_init_file (&stream, fi);
 464   root_obj = lisp_read (&stream);
 465
 466   if (root_obj->type == LISP_TYPE_EOF || root_obj->type == LISP_TYPE_PARSE_ERROR)
 467   {
 468     printf("World: Parse Error in file %s", level->name.c_str());
 469   }
 470
 471   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-level") == 0)
 472   {
 473     LispReader reader(lisp_cdr(root_obj));
 474     reader.read_string("name",  &level->title);
 475   }
 476
 477   lisp_free(root_obj);
 478
 479   fclose(fi);
 480 }
 481
 482 void
 483 WorldMap::on_escape_press()
 484 {
 485   // Show or hide the menu
 486   if(!Menu::current())
 487     Menu::set_current(worldmap_menu);
 488   else
 489     Menu::set_current(0);
 490 }
 491
 492 void
 493 WorldMap::get_input()
 494 {
 495   enter_level = false;
 496   input_direction = NONE;
 497
 498   SDL_Event event;
 499   while (SDL_PollEvent(&event))
 500     {
 501       if (Menu::current())
 502         {
 503           Menu::current()->event(event);
 504         }
 505       else
 506         {
 507           switch(event.type)
 508             {
 509             case SDL_QUIT:
 510               st_abort("Received window close", "");
 511               break;
 512
 513             case SDL_KEYDOWN:
 514               switch(event.key.keysym.sym)
 515                 {
 516                 case SDLK_ESCAPE:
 517                   on_escape_press();
 518                   break;
 519                 case SDLK_LCTRL:
 520                 case SDLK_RETURN:
 521                   enter_level = true;
 522                   break;
 523                 default:
 524                   break;
 525                 }
 526               break;
 527
 528             case SDL_JOYAXISMOTION:
 529               if (event.jaxis.axis == joystick_keymap.x_axis)
 530                 {
 531                   if (event.jaxis.value < -joystick_keymap.dead_zone)
 532                     input_direction = WEST;
 533                   else if (event.jaxis.value > joystick_keymap.dead_zone)
 534                     input_direction = EAST;
 535                 }
 536               else if (event.jaxis.axis == joystick_keymap.y_axis)
 537                 {
 538                   if (event.jaxis.value > joystick_keymap.dead_zone)
 539                     input_direction = SOUTH;
 540                   else if (event.jaxis.value < -joystick_keymap.dead_zone)
 541                     input_direction = NORTH;
 542                 }
 543               break;
 544
 545             case SDL_JOYBUTTONDOWN:
 546               if (event.jbutton.button == joystick_keymap.b_button)
 547                 enter_level = true;
 548               else if (event.jbutton.button == joystick_keymap.start_button)
 549                 on_escape_press();
 550               break;
 551
 552             default:
 553               break;
 554             }
 555         }
 556     }
 557
 558   if (!Menu::current())
 559     {
 560       Uint8 *keystate = SDL_GetKeyState(NULL);
 561
 562       if (keystate[SDLK_LEFT])
 563         input_direction = WEST;
 564       else if (keystate[SDLK_RIGHT])
 565         input_direction = EAST;
 566       else if (keystate[SDLK_UP])
 567         input_direction = NORTH;
 568       else if (keystate[SDLK_DOWN])
 569         input_direction = SOUTH;
 570     }
 571 }
 572
 573 Point
 574 WorldMap::get_next_tile(Point pos, Direction direction)
 575 {
 576   switch(direction)
 577     {
 578     case WEST:
 579       pos.x -= 1;
 580       break;
 581     case EAST:
 582       pos.x += 1;
 583       break;
 584     case NORTH:
 585       pos.y -= 1;
 586       break;
 587     case SOUTH:
 588       pos.y += 1;
 589       break;
 590     case NONE:
 591       break;
 592     }
 593   return pos;
 594 }
 595
 596 bool
 597 WorldMap::path_ok(Direction direction, Point old_pos, Point* new_pos)
 598 {
 599   *new_pos = get_next_tile(old_pos, direction);
 600
 601   if (!(new_pos->x >= 0 && new_pos->x < width
 602         && new_pos->y >= 0 && new_pos->y < height))
 603     { // New position is outsite the tilemap
 604       return false;
 605     }
 606   else
 607     { // Check if we the tile allows us to go to new_pos
 608       switch(direction)
 609         {
 610         case WEST:
 611           return (at(old_pos)->west && at(*new_pos)->east);
 612
 613         case EAST:
 614           return (at(old_pos)->east && at(*new_pos)->west);
 615
 616         case NORTH:
 617           return (at(old_pos)->north && at(*new_pos)->south);
 618
 619         case SOUTH:
 620           return (at(old_pos)->south && at(*new_pos)->north);
 621
 622         case NONE:
 623           assert(!"path_ok() can't work if direction is NONE");
 624         }
 625       return false;
 626     }
 627 }
 628
 629 void
 630 WorldMap::update(float delta)
 631 {
 632   if (enter_level && !tux->is_moving())
 633     {
 634       Level* level = at_level();
 635       if (level)
 636         {
 637           if (level->x == tux->get_tile_pos().x &&
 638               level->y == tux->get_tile_pos().y)
 639             {
 640               std::cout << "Enter the current level: " << level->name << std::endl;;
 641               GameSession session(datadir +  "/levels/" + level->name,
 642                                   1, ST_GL_LOAD_LEVEL_FILE);
 643
 644               switch (session.run())
 645                 {
 646                 case GameSession::LEVEL_FINISHED:
 647                   {
 648                     bool old_level_state = level->solved;
 649                     level->solved = true;
 650
 651                     if (session.get_world()->get_tux()->got_coffee)
 652                       player_status.bonus = PlayerStatus::FLOWER_BONUS;
 653                     else if (session.get_world()->get_tux()->size == BIG)
 654                       player_status.bonus = PlayerStatus::GROWUP_BONUS;
 655                     else
 656                       player_status.bonus = PlayerStatus::NO_BONUS;
 657
 658                     if (old_level_state != level->solved)
 659                       { // Try to detect the next direction to which we should walk
 660                         // FIXME: Mostly a hack
 661                         Direction dir = NONE;
 662
 663                         Tile* tile = at(tux->get_tile_pos());
 664
 665                         if (tile->north && tux->back_direction != NORTH)
 666                           dir = NORTH;
 667                         else if (tile->south && tux->back_direction != SOUTH)
 668                           dir = SOUTH;
 669                         else if (tile->east && tux->back_direction != EAST)
 670                           dir = EAST;
 671                         else if (tile->west && tux->back_direction != WEST)
 672                           dir = WEST;
 673
 674                         if (dir != NONE)
 675                           {
 676                             tux->set_direction(dir);
 677                             tux->update(delta);
 678                           }
 679
 680                         std::cout << "Walk to dir: " << dir << std::endl;
 681                       }
 682
 683                     if (!level->extro_filename.empty())
 684                       { // Display final credits and go back to the main menu
 685                         display_text_file(level->extro_filename,
 686                                           "/images/background/arctis2.jpg");
 687                         display_text_file("CREDITS",
 688                                           "/images/background/oiltux.jpg");
 689                         quit = true;
 690                       }
 691                   }
 692
 693                   break;
 694                 case GameSession::LEVEL_ABORT:
 695                   // Reseting the player_status might be a worthy
 696                   // consideration, but I don't think we need it
 697                   // 'cause only the bad players will use it to
 698                   // 'cheat' a few items and that isn't necesarry a
 699                   // bad thing (ie. better they continue that way,
 700                   // then stop playing the game all together since it
 701                   // is to hard)
 702                   break;
 703                 case GameSession::GAME_OVER:
 704                   quit = true;
 705                   player_status.bonus = PlayerStatus::NO_BONUS;
 706                   break;
 707                 case GameSession::NONE:
 708                   // Should never be reached
 709                   break;
 710                 }
 711
 712               music_manager->play_music(song);
 713               Menu::set_current(0);
 714               if (!savegame_file.empty())
 715                 savegame(savegame_file);
 716               return;
 717             }
 718         }
 719       else
 720         {
 721           std::cout << "Nothing to enter at: "
 722                     << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << std::endl;
 723         }
 724     }
 725   else
 726     {
 727       tux->set_direction(input_direction);
 728       tux->update(delta);
 729     }
 730
 731   Menu* menu = Menu::current();
 732   if(menu)
 733     {
 734       menu->action();
 735
 736       if(menu == worldmap_menu)
 737         {
 738           switch (worldmap_menu->check())
 739             {
 740             case MNID_RETURNWORLDMAP: // Return to game
 741               break;
 742             case MNID_SAVEGAME:
 743               if (!savegame_file.empty())
 744                 savegame(savegame_file);
 745               break;
 746
 747             case MNID_QUITWORLDMAP: // Quit Worldmap
 748               quit = true;
 749               break;
 750             }
 751         }
 752       else if(menu == options_menu)
 753         {
 754           process_options_menu();
 755         }
 756     }
 757 }
 758
 759 Tile*
 760 WorldMap::at(Point p)
 761 {
 762   assert(p.x >= 0
 763          && p.x < width
 764          && p.y >= 0
 765          && p.y < height);
 766
 767   return tile_manager->get(tilemap[width * p.y + p.x]);
 768 }
 769
 770 WorldMap::Level*
 771 WorldMap::at_level()
 772 {
 773   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 774     {
 775       if (i->x == tux->get_tile_pos().x &&
 776           i->y == tux->get_tile_pos().y)
 777         return &*i;
 778     }
 779
 780   return 0;
 781 }
 782
 783
 784 void
 785 WorldMap::draw(const Point& offset)
 786 {
 787   for(int y = 0; y < height; ++y)
 788     for(int x = 0; x < width; ++x)
 789       {
 790         Tile* tile = at(Point(x, y));
 791         tile->sprite->draw(x*32 + offset.x,
 792                            y*32 + offset.y);
 793       }
 794
 795   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 796     {
 797       if (i->solved)
 798         leveldot_green->draw(i->x*32 + offset.x,
 799                              i->y*32 + offset.y);
 800       else
 801         leveldot_red->draw(i->x*32 + offset.x,
 802                            i->y*32 + offset.y);
 803     }
 804
 805   tux->draw(offset);
 806   draw_status();
 807 }
 808
 809 void
 810 WorldMap::draw_status()
 811 {
 812   char str[80];
 813   sprintf(str, "%d", player_status.score);
 814   white_text->draw("SCORE", 0, 0);
 815   gold_text->draw(str, 96, 0);
 816
 817   sprintf(str, "%d", player_status.distros);
 818   white_text->draw_align("COINS", 320-64, 0,  A_LEFT, A_TOP);
 819   gold_text->draw_align(str, 320+64, 0, A_RIGHT, A_TOP);
 820
 821   white_text->draw("LIVES", 480, 0);
 822   if (player_status.lives >= 5)
 823     {
 824       sprintf(str, "%dx", player_status.lives);
 825       gold_text->draw(str, 585, 0);
 826       tux_life->draw(565+(18*3), 0);
 827     }
 828   else
 829     {
 830       for(int i= 0; i < player_status.lives; ++i)
 831         tux_life->draw(565+(18*i),0);
 832     }
 833
 834   if (!tux->is_moving())
 835     {
 836       for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 837         {
 838           if (i->x == tux->get_tile_pos().x &&
 839               i->y == tux->get_tile_pos().y)
 840             {
 841               white_text->draw_align(i->title.c_str(), screen->w/2, screen->h,  A_HMIDDLE, A_BOTTOM);
 842               break;
 843             }
 844         }
 845     }
 846 }
 847
 848 void
 849 WorldMap::display()
 850 {
 851   Menu::set_current(0);
 852
 853   quit = false;
 854
 855   song = music_manager->load_music(datadir +  "/music/" + music);
 856   music_manager->play_music(song);
 857
 858   unsigned int last_update_time;
 859   unsigned int update_time;
 860
 861   last_update_time = update_time = st_get_ticks();
 862
 863   while(!quit)
 864     {
 865       float delta = ((float)(update_time-last_update_time))/100.0;
 866
 867       delta *= 1.3f;
 868
 869       last_update_time = update_time;
 870       update_time      = st_get_ticks();
 871
 872       Point tux_pos = tux->get_pos();
 873       if (1)
 874         {
 875           offset.x = -tux_pos.x + screen->w/2;
 876           offset.y = -tux_pos.y + screen->h/2;
 877
 878           if (offset.x > 0) offset.x = 0;
 879           if (offset.y > 0) offset.y = 0;
 880
 881           if (offset.x < screen->w - width*32) offset.x = screen->w - width*32;
 882           if (offset.y < screen->h - height*32) offset.y = screen->h - height*32;
 883         }
 884
 885       draw(offset);
 886       get_input();
 887       update(delta);
 888
 889       if(Menu::current())
 890         {
 891           Menu::current()->draw();
 892           mouse_cursor->draw();
 893         }
 894       flipscreen();
 895
 896       SDL_Delay(20);
 897     }
 898 }
 899
 900 void
 901 WorldMap::savegame(const std::string& filename)
 902 {
 903   std::cout << "savegame: " << filename << std::endl;
 904   std::ofstream out(filename.c_str());
 905
 906   int nb_solved_levels = 0;
 907   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 908     {
 909       if (i->solved)
 910         ++nb_solved_levels;
 911     }
 912
 913   out << "(supertux-savegame\n"
 914       << "  (version 1)\n"
 915       << "  (title  \"Icyisland - " << nb_solved_levels << "/" << levels.size() << "\")\n"
 916       << "  (lives   " << player_status.lives << ")\n"
 917       << "  (score   " << player_status.score << ")\n"
 918       << "  (distros " << player_status.distros << ")\n"
 919       << "  (tux (x " << tux->get_tile_pos().x << ") (y " << tux->get_tile_pos().y << ")\n"
 920       << "       (back \"" << direction_to_string(tux->back_direction) << "\")\n"
 921       << "       (bonus \"" << bonus_to_string(player_status.bonus) <<  "\"))\n"
 922       << "  (levels\n";
 923
 924   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 925     {
 926       if (i->solved)
 927         {
 928           out << "     (level (name \"" << i->name << "\")\n"
 929               << "            (solved #t))\n";
 930         }
 931     }
 932
 933   out << "   )\n"
 934       << " )\n\n;; EOF ;;" << std::endl;
 935 }
 936
 937 void
 938 WorldMap::loadgame(const std::string& filename)
 939 {
 940   std::cout << "loadgame: " << filename << std::endl;
 941   savegame_file = filename;
 942
 943   if (access(filename.c_str(), F_OK) != 0)
 944     return;
 945
 946   lisp_object_t* savegame = lisp_read_from_file(filename);
 947   if (!savegame)
 948     {
 949       std::cout << "WorldMap:loadgame: File not found: " << filename << std::endl;
 950       return;
 951     }
 952
 953   lisp_object_t* cur = savegame;
 954
 955   if (strcmp(lisp_symbol(lisp_car(cur)), "supertux-savegame") != 0)
 956     return;
 957
 958   cur = lisp_cdr(cur);
 959   LispReader reader(cur);
 960
 961   reader.read_int("lives",  &player_status.lives);
 962   reader.read_int("score",  &player_status.score);
 963   reader.read_int("distros", &player_status.distros);
 964
 965   if (player_status.lives < 0)
 966     player_status.lives = START_LIVES;
 967
 968   lisp_object_t* tux_cur = 0;
 969   if (reader.read_lisp("tux", &tux_cur))
 970     {
 971       Point p;
 972       std::string back_str = "none";
 973       std::string bonus_str = "none";
 974
 975       LispReader tux_reader(tux_cur);
 976       tux_reader.read_int("x", &p.x);
 977       tux_reader.read_int("y", &p.y);
 978       tux_reader.read_string("back", &back_str);
 979       tux_reader.read_string("bonus", &bonus_str);
 980
 981       player_status.bonus = string_to_bonus(bonus_str);
 982       tux->back_direction = string_to_direction(back_str);
 983       tux->set_tile_pos(p);
 984     }
 985
 986   lisp_object_t* level_cur = 0;
 987   if (reader.read_lisp("levels", &level_cur))
 988     {
 989       while(level_cur)
 990         {
 991           lisp_object_t* sym  = lisp_car(lisp_car(level_cur));
 992           lisp_object_t* data = lisp_cdr(lisp_car(level_cur));
 993
 994           if (strcmp(lisp_symbol(sym), "level") == 0)
 995             {
 996               std::string name;
 997               bool solved = false;
 998
 999               LispReader level_reader(data);
1000               level_reader.read_string("name",   &name);
1001               level_reader.read_bool("solved", &solved);
1002
1003               for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1004                 {
1005                   if (name == i->name)
1006                     i->solved = solved;
1007                 }
1008             }
1009
1010           level_cur = lisp_cdr(level_cur);
1011         }
1012     }
1013
1014   lisp_free(savegame);
1015 }
1016
1017 } // namespace WorldMapNS
1018
1019 /* Local Variables: */
1020 /* mode:c++ */
1021 /* End: */
1022