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 <unistd.h>
  25 #include "globals.h"
  26 #include "texture.h"
  27 #include "screen.h"
  28 #include "lispreader.h"
  29 #include "gameloop.h"
  30 #include "setup.h"
  31 #include "worldmap.h"
  32 #include "resources.h"
  33
  34 namespace WorldMapNS {
  35
  36 Direction reverse_dir(Direction direction)
  37 {
  38   switch(direction)
  39     {
  40     case D_WEST:
  41       return D_EAST;
  42     case D_EAST:
  43       return D_WEST;
  44     case D_NORTH:
  45       return D_SOUTH;
  46     case D_SOUTH:
  47       return D_NORTH;
  48     case D_NONE:
  49       return D_NONE;
  50     }
  51   return D_NONE;
  52 }
  53
  54 std::string
  55 direction_to_string(Direction direction)
  56 {
  57   switch(direction)
  58     {
  59     case D_WEST:
  60       return "west";
  61     case D_EAST:
  62       return "east";
  63     case D_NORTH:
  64       return "north";
  65     case D_SOUTH:
  66       return "south";
  67     default:
  68       return "none";
  69     }
  70 }
  71
  72 Direction
  73 string_to_direction(const std::string& directory)
  74 {
  75   if (directory == "west")
  76     return D_WEST;
  77   else if (directory == "east")
  78     return D_EAST;
  79   else if (directory == "north")
  80     return D_NORTH;
  81   else if (directory == "south")
  82     return D_SOUTH;
  83   else
  84     return D_NONE;
  85 }
  86
  87 TileManager::TileManager()
  88 {
  89   std::string stwt_filename = datadir +  "/images/worldmap/antarctica.stwt";
  90   lisp_object_t* root_obj = lisp_read_from_file(stwt_filename);
  91
  92   if (!root_obj)
  93     st_abort("Couldn't load file", stwt_filename);
  94
  95   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap-tiles") == 0)
  96     {
  97       lisp_object_t* cur = lisp_cdr(root_obj);
  98
  99       while(!lisp_nil_p(cur))
 100         {
 101           lisp_object_t* element = lisp_car(cur);
 102
 103           if (strcmp(lisp_symbol(lisp_car(element)), "tile") == 0)
 104             {
 105               int id = 0;
 106               std::string filename = "<invalid>";
 107
 108               Tile* tile = new Tile;
 109               tile->north = true;
 110               tile->east  = true;
 111               tile->south = true;
 112               tile->west  = true;
 113               tile->stop  = true;
 114               tile->auto_walk = false;
 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_bool("auto-walk",  &tile->auto_walk);
 124               reader.read_string("image",  &filename);
 125
 126               tile->sprite = new Surface(
 127                            datadir +  "/images/worldmap/" + filename,
 128                            USE_ALPHA);
 129
 130               if (id >= int(tiles.size()))
 131                 tiles.resize(id+1);
 132
 133               tiles[id] = tile;
 134             }
 135           else
 136             {
 137               puts("Unhandled symbol");
 138             }
 139
 140           cur = lisp_cdr(cur);
 141         }
 142     }
 143   else
 144     {
 145       assert(0);
 146     }
 147
 148   lisp_free(root_obj);
 149 }
 150
 151 TileManager::~TileManager()
 152 {
 153   for(std::vector<Tile*>::iterator i = tiles.begin(); i != tiles.end(); ++i)
 154     delete *i;
 155 }
 156
 157 Tile*
 158 TileManager::get(int i)
 159 {
 160   assert(i >=0 && i < int(tiles.size()));
 161   return tiles[i];
 162 }
 163
 164 //---------------------------------------------------------------------------
 165
 166 Tux::Tux(WorldMap* worldmap_)
 167   : worldmap(worldmap_)
 168 {
 169   largetux_sprite = new Surface(datadir +  "/images/worldmap/tux.png", USE_ALPHA);
 170   firetux_sprite = new Surface(datadir +  "/images/worldmap/firetux.png", USE_ALPHA);
 171   smalltux_sprite = new Surface(datadir +  "/images/worldmap/smalltux.png", USE_ALPHA);
 172
 173   offset = 0;
 174   moving = false;
 175   tile_pos.x = 4;
 176   tile_pos.y = 5;
 177   direction = D_NONE;
 178   input_direction = D_NONE;
 179 }
 180
 181 Tux::~Tux()
 182 {
 183   delete smalltux_sprite;
 184   delete firetux_sprite;
 185   delete largetux_sprite;
 186 }
 187
 188 void
 189 Tux::draw(const Point& offset)
 190 {
 191   Point pos = get_pos();
 192   switch (player_status.bonus)
 193     {
 194     case PlayerStatus::GROWUP_BONUS:
 195       largetux_sprite->draw(pos.x + offset.x,
 196                             pos.y + offset.y - 10);
 197       break;
 198     case PlayerStatus::FLOWER_BONUS:
 199       firetux_sprite->draw(pos.x + offset.x,
 200                            pos.y + offset.y - 10);
 201       break;
 202     case PlayerStatus::NO_BONUS:
 203       smalltux_sprite->draw(pos.x + offset.x,
 204                             pos.y + offset.y - 10);
 205       break;
 206     }
 207 }
 208
 209
 210 Point
 211 Tux::get_pos()
 212 {
 213   float x = tile_pos.x * 32;
 214   float y = tile_pos.y * 32;
 215
 216   switch(direction)
 217     {
 218     case D_WEST:
 219       x -= offset - 32;
 220       break;
 221     case D_EAST:
 222       x += offset - 32;
 223       break;
 224     case D_NORTH:
 225       y -= offset - 32;
 226       break;
 227     case D_SOUTH:
 228       y += offset - 32;
 229       break;
 230     case D_NONE:
 231       break;
 232     }
 233
 234   return Point((int)x, (int)y);
 235 }
 236
 237 void
 238 Tux::stop()
 239 {
 240   offset = 0;
 241   direction = D_NONE;
 242   moving = false;
 243 }
 244
 245 void
 246 Tux::update(float delta)
 247 {
 248   if (!moving)
 249     {
 250       if (input_direction != D_NONE)
 251         {
 252           WorldMap::Level* level = worldmap->at_level();
 253
 254           // We got a new direction, so lets start walking when possible
 255           Point next_tile;
 256           if ((!level || level->solved)
 257               && worldmap->path_ok(input_direction, tile_pos, &next_tile))
 258             {
 259               tile_pos = next_tile;
 260               moving = true;
 261               direction = input_direction;
 262               back_direction = reverse_dir(direction);
 263             }
 264           else if (input_direction == back_direction)
 265             {
 266               std::cout << "Back triggered" << std::endl;
 267               moving = true;
 268               direction = input_direction;
 269               tile_pos = worldmap->get_next_tile(tile_pos, direction);
 270               back_direction = reverse_dir(direction);
 271             }
 272         }
 273     }
 274   else
 275     {
 276       // Let tux walk a few pixels (20 pixel/sec)
 277       offset += 20.0f * delta;
 278
 279       if (offset > 32)
 280         { // We reached the next tile, so we check what to do now
 281           offset -= 32;
 282
 283           if (worldmap->at(tile_pos)->stop || worldmap->at_level())
 284             {
 285               stop();
 286             }
 287           else
 288             {
 289               if (worldmap->at(tile_pos)->auto_walk)
 290                 { // Turn to a new direction
 291                   Tile* tile = worldmap->at(tile_pos);
 292                   Direction dir = D_NONE;
 293
 294                   if (tile->north && back_direction != D_NORTH)
 295                     dir = D_NORTH;
 296                   else if (tile->south && back_direction != D_SOUTH)
 297                     dir = D_SOUTH;
 298                   else if (tile->east && back_direction != D_EAST)
 299                     dir = D_EAST;
 300                   else if (tile->west && back_direction != D_WEST)
 301                     dir = D_WEST;
 302
 303                   if (dir != D_NONE)
 304                     {
 305                       direction = dir;
 306                       back_direction = reverse_dir(direction);
 307                     }
 308                   else
 309                     {
 310                       // Should never be reached if tiledata is good
 311                       stop();
 312                       return;
 313                     }
 314                 }
 315
 316               // Walk automatically to the next tile
 317               Point next_tile;
 318               if (worldmap->path_ok(direction, tile_pos, &next_tile))
 319                 {
 320                   tile_pos = next_tile;
 321                 }
 322               else
 323                 {
 324                   puts("Tilemap data is buggy");
 325                   stop();
 326                 }
 327             }
 328         }
 329     }
 330 }
 331
 332 //---------------------------------------------------------------------------
 333 Tile::Tile()
 334 {
 335 }
 336
 337 Tile::~Tile()
 338 {
 339   delete sprite;
 340 }
 341
 342 //---------------------------------------------------------------------------
 343
 344 WorldMap::WorldMap()
 345 {
 346   tile_manager = new TileManager();
 347   tux = new Tux(this);
 348
 349   width  = 20;
 350   height = 15;
 351
 352   level_sprite = new Surface(datadir +  "/images/worldmap/levelmarker.png", USE_ALPHA);
 353   leveldot_green = new Surface(datadir +  "/images/worldmap/leveldot_green.png", USE_ALPHA);
 354   leveldot_red = new Surface(datadir +  "/images/worldmap/leveldot_red.png", USE_ALPHA);
 355
 356   input_direction = D_NONE;
 357   enter_level = false;
 358
 359   name = "<no file>";
 360   music = "SALCON.MOD";
 361
 362   load_map();
 363 }
 364
 365 WorldMap::~WorldMap()
 366 {
 367   delete tux;
 368   delete tile_manager;
 369
 370   delete level_sprite;
 371   delete leveldot_green;
 372   delete leveldot_red;
 373 }
 374
 375 void
 376 WorldMap::load_map()
 377 {
 378   std::string filename = datadir +  "/levels/default/worldmap.stwm";
 379
 380   lisp_object_t* root_obj = lisp_read_from_file(filename);
 381   if (!root_obj)
 382     st_abort("Couldn't load file", filename);
 383
 384   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap") == 0)
 385     {
 386       lisp_object_t* cur = lisp_cdr(root_obj);
 387
 388       while(!lisp_nil_p(cur))
 389         {
 390           lisp_object_t* element = lisp_car(cur);
 391
 392           if (strcmp(lisp_symbol(lisp_car(element)), "tilemap") == 0)
 393             {
 394               LispReader reader(lisp_cdr(element));
 395               reader.read_int("width",  &width);
 396               reader.read_int("height", &height);
 397               reader.read_int_vector("data", &tilemap);
 398             }
 399           else if (strcmp(lisp_symbol(lisp_car(element)), "properties") == 0)
 400             {
 401               LispReader reader(lisp_cdr(element));
 402               reader.read_string("name",  &name);
 403               reader.read_string("music", &music);
 404             }
 405           else if (strcmp(lisp_symbol(lisp_car(element)), "levels") == 0)
 406             {
 407               lisp_object_t* cur = lisp_cdr(element);
 408
 409               while(!lisp_nil_p(cur))
 410                 {
 411                   lisp_object_t* element = lisp_car(cur);
 412
 413                   if (strcmp(lisp_symbol(lisp_car(element)), "level") == 0)
 414                     {
 415                       Level level;
 416                       LispReader reader(lisp_cdr(element));
 417                       level.solved = false;
 418
 419                       level.north = true;
 420                       level.east  = true;
 421                       level.south = true;
 422                       level.west  = true;
 423
 424                       reader.read_string("extro-filename",  &level.extro_filename);
 425                       reader.read_string("name",  &level.name);
 426                       reader.read_int("x", &level.x);
 427                       reader.read_int("y", &level.y);
 428
 429                       get_level_title(&level);   // get level's title
 430
 431                       levels.push_back(level);
 432                     }
 433
 434                   cur = lisp_cdr(cur);
 435                 }
 436             }
 437           else
 438             {
 439
 440             }
 441
 442           cur = lisp_cdr(cur);
 443         }
 444     }
 445
 446     lisp_free(root_obj);
 447 }
 448
 449 void WorldMap::get_level_title(Levels::pointer level)
 450 {
 451   /** get level's title */
 452   level->title = "<no title>";
 453
 454   FILE * fi;
 455   lisp_object_t* root_obj = 0;
 456   fi = fopen((datadir +  "/levels/" + level->name).c_str(), "r");
 457   if (fi == NULL)
 458   {
 459     perror((datadir +  "/levels/" + level->name).c_str());
 460     return;
 461   }
 462
 463   lisp_stream_t stream;
 464   lisp_stream_init_file (&stream, fi);
 465   root_obj = lisp_read (&stream);
 466
 467   if (root_obj->type == LISP_TYPE_EOF || root_obj->type == LISP_TYPE_PARSE_ERROR)
 468   {
 469     printf("World: Parse Error in file %s", level->name.c_str());
 470   }
 471
 472   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-level") == 0)
 473   {
 474     LispReader reader(lisp_cdr(root_obj));
 475     reader.read_string("name",  &level->title);
 476   }
 477
 478   lisp_free(root_obj);
 479
 480   fclose(fi);
 481 }
 482
 483 void
 484 WorldMap::on_escape_press()
 485 {
 486   // Show or hide the menu
 487   if(!Menu::current())
 488     Menu::set_current(worldmap_menu);
 489   else
 490     Menu::set_current(0);
 491 }
 492
 493 void
 494 WorldMap::get_input()
 495 {
 496   enter_level = false;
 497   input_direction = D_NONE;
 498
 499   SDL_Event event;
 500   while (SDL_PollEvent(&event))
 501     {
 502       if (Menu::current())
 503         {
 504           Menu::current()->event(event);
 505         }
 506       else
 507         {
 508           switch(event.type)
 509             {
 510             case SDL_QUIT:
 511               st_abort("Received window close", "");
 512               break;
 513
 514             case SDL_KEYDOWN:
 515               switch(event.key.keysym.sym)
 516                 {
 517                 case SDLK_ESCAPE:
 518                   on_escape_press();
 519                   break;
 520                 case SDLK_LCTRL:
 521                 case SDLK_RETURN:
 522                   enter_level = true;
 523                   break;
 524                 default:
 525                   break;
 526                 }
 527               break;
 528
 529             case SDL_JOYAXISMOTION:
 530               if (event.jaxis.axis == joystick_keymap.x_axis)
 531                 {
 532                   if (event.jaxis.value < -joystick_keymap.dead_zone)
 533                     input_direction = D_WEST;
 534                   else if (event.jaxis.value > joystick_keymap.dead_zone)
 535                     input_direction = D_EAST;
 536                 }
 537               else if (event.jaxis.axis == joystick_keymap.y_axis)
 538                 {
 539                   if (event.jaxis.value > joystick_keymap.dead_zone)
 540                     input_direction = D_SOUTH;
 541                   else if (event.jaxis.value < -joystick_keymap.dead_zone)
 542                     input_direction = D_NORTH;
 543                 }
 544               break;
 545
 546             case SDL_JOYBUTTONDOWN:
 547               if (event.jbutton.button == joystick_keymap.b_button)
 548                 enter_level = true;
 549               else if (event.jbutton.button == joystick_keymap.start_button)
 550                 on_escape_press();
 551               break;
 552
 553             default:
 554               break;
 555             }
 556         }
 557     }
 558
 559   if (!Menu::current())
 560     {
 561       Uint8 *keystate = SDL_GetKeyState(NULL);
 562
 563       if (keystate[SDLK_LEFT])
 564         input_direction = D_WEST;
 565       else if (keystate[SDLK_RIGHT])
 566         input_direction = D_EAST;
 567       else if (keystate[SDLK_UP])
 568         input_direction = D_NORTH;
 569       else if (keystate[SDLK_DOWN])
 570         input_direction = D_SOUTH;
 571     }
 572 }
 573
 574 Point
 575 WorldMap::get_next_tile(Point pos, Direction direction)
 576 {
 577   switch(direction)
 578     {
 579     case D_WEST:
 580       pos.x -= 1;
 581       break;
 582     case D_EAST:
 583       pos.x += 1;
 584       break;
 585     case D_NORTH:
 586       pos.y -= 1;
 587       break;
 588     case D_SOUTH:
 589       pos.y += 1;
 590       break;
 591     case D_NONE:
 592       break;
 593     }
 594   return pos;
 595 }
 596
 597 bool
 598 WorldMap::path_ok(Direction direction, Point old_pos, Point* new_pos)
 599 {
 600   *new_pos = get_next_tile(old_pos, direction);
 601
 602   if (!(new_pos->x >= 0 && new_pos->x < width
 603         && new_pos->y >= 0 && new_pos->y < height))
 604     { // New position is outsite the tilemap
 605       return false;
 606     }
 607   else
 608     { // Check if we the tile allows us to go to new_pos
 609       switch(direction)
 610         {
 611         case D_WEST:
 612           return (at(old_pos)->west && at(*new_pos)->east);
 613
 614         case D_EAST:
 615           return (at(old_pos)->east && at(*new_pos)->west);
 616
 617         case D_NORTH:
 618           return (at(old_pos)->north && at(*new_pos)->south);
 619
 620         case D_SOUTH:
 621           return (at(old_pos)->south && at(*new_pos)->north);
 622
 623         case D_NONE:
 624           assert(!"path_ok() can't work if direction is NONE");
 625         }
 626       return false;
 627     }
 628 }
 629
 630 void
 631 WorldMap::update(float delta)
 632 {
 633   if (enter_level && !tux->is_moving())
 634     {
 635       Level* level = at_level();
 636       if (level)
 637         {
 638           if (level->x == tux->get_tile_pos().x &&
 639               level->y == tux->get_tile_pos().y)
 640             {
 641               std::cout << "Enter the current level: " << level->name << std::endl;;
 642               GameSession session(datadir +  "/levels/" + level->name,
 643                                   1, ST_GL_LOAD_LEVEL_FILE);
 644
 645               switch (session.run())
 646                 {
 647                 case GameSession::ES_LEVEL_FINISHED:
 648                   {
 649                     bool old_level_state = level->solved;
 650                     level->solved = true;
 651
 652                     if (session.get_world()->get_tux()->got_power !=
 653                           session.get_world()->get_tux()->NONE_POWER)
 654                       player_status.bonus = PlayerStatus::FLOWER_BONUS;
 655                     else if (session.get_world()->get_tux()->size == BIG)
 656                       player_status.bonus = PlayerStatus::GROWUP_BONUS;
 657                     else
 658                       player_status.bonus = PlayerStatus::NO_BONUS;
 659
 660                     if (old_level_state != level->solved)
 661                       { // Try to detect the next direction to which we should walk
 662                         // FIXME: Mostly a hack
 663                         Direction dir = D_NONE;
 664
 665                         Tile* tile = at(tux->get_tile_pos());
 666
 667                         if (tile->north && tux->back_direction != D_NORTH)
 668                           dir = D_NORTH;
 669                         else if (tile->south && tux->back_direction != D_SOUTH)
 670                           dir = D_SOUTH;
 671                         else if (tile->east && tux->back_direction != D_EAST)
 672                           dir = D_EAST;
 673                         else if (tile->west && tux->back_direction != D_WEST)
 674                           dir = D_WEST;
 675
 676                         if (dir != D_NONE)
 677                           {
 678                             tux->set_direction(dir);
 679                             //tux->update(delta);
 680                           }
 681
 682                         std::cout << "Walk to dir: " << dir << std::endl;
 683                       }
 684
 685                     if (!level->extro_filename.empty())
 686                       {
 687                         MusicRef theme =
 688                           music_manager->load_music(datadir + "/music/theme.mod");
 689                         music_manager->play_music(theme);
 690                         // Display final credits and go back to the main menu
 691                         display_text_file(level->extro_filename,
 692                                           "/images/background/extro.jpg", SCROLL_SPEED_MESSAGE);
 693                         display_text_file("CREDITS",
 694                                           "/images/background/oiltux.jpg", SCROLL_SPEED_CREDITS);
 695                         quit = true;
 696                       }
 697                   }
 698
 699                   break;
 700                 case GameSession::ES_LEVEL_ABORT:
 701                   // Reseting the player_status might be a worthy
 702                   // consideration, but I don't think we need it
 703                   // 'cause only the bad players will use it to
 704                   // 'cheat' a few items and that isn't necesarry a
 705                   // bad thing (ie. better they continue that way,
 706                   // then stop playing the game all together since it
 707                   // is to hard)
 708                   break;
 709                 case GameSession::ES_GAME_OVER:
 710                   /* draw an end screen */
 711                   /* in the future, this should make a dialog a la SuperMario, asking
 712                   if the player wants to restart the world map with no score and from
 713                   level 1 */
 714                   char str[80];
 715
 716                   drawgradient(Color (0, 255, 0), Color (255, 0, 255));
 717
 718                   blue_text->drawf("GAMEOVER", 0, 200, A_HMIDDLE, A_TOP, 1);
 719
 720                   sprintf(str, "SCORE: %d", player_status.score);
 721                   gold_text->drawf(str, 0, 224, A_HMIDDLE, A_TOP, 1);
 722
 723                   sprintf(str, "COINS: %d", player_status.distros);
 724                   gold_text->drawf(str, 0, screen->w - gold_text->w*2, A_HMIDDLE, A_TOP, 1);
 725
 726                   flipscreen();
 727
 728                   SDL_Event event;
 729                   wait_for_event(event,2000,5000,true);
 730
 731                   quit = true;
 732                   player_status.reset();
 733                   break;
 734                 case GameSession::ES_NONE:
 735                   // Should never be reached
 736                   break;
 737                 }
 738
 739               music_manager->play_music(song);
 740               Menu::set_current(0);
 741               if (!savegame_file.empty())
 742                 savegame(savegame_file);
 743               return;
 744             }
 745         }
 746       else
 747         {
 748           std::cout << "Nothing to enter at: "
 749                     << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << std::endl;
 750         }
 751     }
 752   else
 753     {
 754       tux->update(delta);
 755       tux->set_direction(input_direction);
 756     }
 757
 758   Menu* menu = Menu::current();
 759   if(menu)
 760     {
 761       menu->action();
 762
 763       if(menu == worldmap_menu)
 764         {
 765           switch (worldmap_menu->check())
 766             {
 767             case MNID_RETURNWORLDMAP: // Return to game
 768               break;
 769             case MNID_QUITWORLDMAP: // Quit Worldmap
 770               quit = true;
 771               break;
 772             }
 773         }
 774       else if(menu == options_menu)
 775         {
 776           process_options_menu();
 777         }
 778     }
 779 }
 780
 781 Tile*
 782 WorldMap::at(Point p)
 783 {
 784   assert(p.x >= 0
 785          && p.x < width
 786          && p.y >= 0
 787          && p.y < height);
 788
 789   return tile_manager->get(tilemap[width * p.y + p.x]);
 790 }
 791
 792 WorldMap::Level*
 793 WorldMap::at_level()
 794 {
 795   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 796     {
 797       if (i->x == tux->get_tile_pos().x &&
 798           i->y == tux->get_tile_pos().y)
 799         return &*i;
 800     }
 801
 802   return 0;
 803 }
 804
 805
 806 void
 807 WorldMap::draw(const Point& offset)
 808 {
 809   for(int y = 0; y < height; ++y)
 810     for(int x = 0; x < width; ++x)
 811       {
 812         Tile* tile = at(Point(x, y));
 813         tile->sprite->draw(x*32 + offset.x,
 814                            y*32 + offset.y);
 815       }
 816
 817   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 818     {
 819       if (i->solved)
 820         leveldot_green->draw(i->x*32 + offset.x,
 821                              i->y*32 + offset.y);
 822       else
 823         leveldot_red->draw(i->x*32 + offset.x,
 824                            i->y*32 + offset.y);
 825     }
 826
 827   tux->draw(offset);
 828   draw_status();
 829 }
 830
 831 void
 832 WorldMap::draw_status()
 833 {
 834   char str[80];
 835   sprintf(str, "%d", player_status.score);
 836   white_text->draw("SCORE", 0, 0);
 837   gold_text->draw(str, 96, 0);
 838
 839   sprintf(str, "%d", player_status.distros);
 840   white_text->draw_align("COINS", screen->w/2 - white_text->w*5, 0,  A_LEFT, A_TOP);
 841   gold_text->draw_align(str, screen->w/2 + (white_text->w*5)/2, 0, A_RIGHT, A_TOP);
 842
 843   white_text->draw("LIVES", screen->w - white_text->w*9, 0);
 844   if (player_status.lives >= 5)
 845     {
 846       sprintf(str, "%dx", player_status.lives);
 847       gold_text->draw_align(str, screen->w - gold_text->w, 0, A_RIGHT, A_TOP);
 848       tux_life->draw(screen->w - gold_text->w, 0);
 849     }
 850   else
 851     {
 852       for(int i= 0; i < player_status.lives; ++i)
 853         tux_life->draw(screen->w - tux_life->w*4 +(tux_life->w*i),0);
 854     }
 855
 856   if (!tux->is_moving())
 857     {
 858       for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 859         {
 860           if (i->x == tux->get_tile_pos().x &&
 861               i->y == tux->get_tile_pos().y)
 862             {
 863               white_text->draw_align(i->title.c_str(), screen->w/2, screen->h,  A_HMIDDLE, A_BOTTOM);
 864               break;
 865             }
 866         }
 867     }
 868 }
 869
 870 void
 871 WorldMap::display()
 872 {
 873   Menu::set_current(0);
 874
 875   quit = false;
 876
 877   song = music_manager->load_music(datadir +  "/music/" + music);
 878   music_manager->play_music(song);
 879
 880   unsigned int last_update_time;
 881   unsigned int update_time;
 882
 883   last_update_time = update_time = st_get_ticks();
 884
 885   while(!quit)
 886     {
 887       float delta = ((float)(update_time-last_update_time))/100.0;
 888
 889       delta *= 1.3f;
 890
 891       if (delta > 10.0f)
 892         delta = .3f;
 893
 894       last_update_time = update_time;
 895       update_time      = st_get_ticks();
 896
 897       Point tux_pos = tux->get_pos();
 898       if (1)
 899         {
 900           offset.x = -tux_pos.x + screen->w/2;
 901           offset.y = -tux_pos.y + screen->h/2;
 902
 903           if (offset.x > 0) offset.x = 0;
 904           if (offset.y > 0) offset.y = 0;
 905
 906           if (offset.x < screen->w - width*32) offset.x = screen->w - width*32;
 907           if (offset.y < screen->h - height*32) offset.y = screen->h - height*32;
 908         }
 909
 910       draw(offset);
 911       get_input();
 912       update(delta);
 913
 914       if(Menu::current())
 915         {
 916           Menu::current()->draw();
 917           mouse_cursor->draw();
 918         }
 919       flipscreen();
 920
 921       SDL_Delay(20);
 922     }
 923 }
 924
 925 void
 926 WorldMap::savegame(const std::string& filename)
 927 {
 928   std::cout << "savegame: " << filename << std::endl;
 929   std::ofstream out(filename.c_str());
 930
 931   int nb_solved_levels = 0;
 932   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 933     {
 934       if (i->solved)
 935         ++nb_solved_levels;
 936     }
 937
 938   out << "(supertux-savegame\n"
 939       << "  (version 1)\n"
 940       << "  (title  \"Icyisland - " << nb_solved_levels << "/" << levels.size() << "\")\n"
 941       << "  (lives   " << player_status.lives << ")\n"
 942       << "  (score   " << player_status.score << ")\n"
 943       << "  (distros " << player_status.distros << ")\n"
 944       << "  (tux (x " << tux->get_tile_pos().x << ") (y " << tux->get_tile_pos().y << ")\n"
 945       << "       (back \"" << direction_to_string(tux->back_direction) << "\")\n"
 946       << "       (bonus \"" << bonus_to_string(player_status.bonus) <<  "\"))\n"
 947       << "  (levels\n";
 948
 949   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 950     {
 951       if (i->solved)
 952         {
 953           out << "     (level (name \"" << i->name << "\")\n"
 954               << "            (solved #t))\n";
 955         }
 956     }
 957
 958   out << "   )\n"
 959       << " )\n\n;; EOF ;;" << std::endl;
 960 }
 961
 962 void
 963 WorldMap::loadgame(const std::string& filename)
 964 {
 965   std::cout << "loadgame: " << filename << std::endl;
 966   savegame_file = filename;
 967
 968   if (access(filename.c_str(), F_OK) != 0)
 969     return;
 970
 971   lisp_object_t* savegame = lisp_read_from_file(filename);
 972   if (!savegame)
 973     {
 974       std::cout << "WorldMap:loadgame: File not found: " << filename << std::endl;
 975       return;
 976     }
 977
 978   lisp_object_t* cur = savegame;
 979
 980   if (strcmp(lisp_symbol(lisp_car(cur)), "supertux-savegame") != 0)
 981     return;
 982
 983   cur = lisp_cdr(cur);
 984   LispReader reader(cur);
 985
 986   reader.read_int("lives",  &player_status.lives);
 987   reader.read_int("score",  &player_status.score);
 988   reader.read_int("distros", &player_status.distros);
 989
 990   if (player_status.lives < 0)
 991     player_status.lives = START_LIVES;
 992
 993   lisp_object_t* tux_cur = 0;
 994   if (reader.read_lisp("tux", &tux_cur))
 995     {
 996       Point p;
 997       std::string back_str = "none";
 998       std::string bonus_str = "none";
 999
1000       LispReader tux_reader(tux_cur);
1001       tux_reader.read_int("x", &p.x);
1002       tux_reader.read_int("y", &p.y);
1003       tux_reader.read_string("back", &back_str);
1004       tux_reader.read_string("bonus", &bonus_str);
1005
1006       player_status.bonus = string_to_bonus(bonus_str);
1007       tux->back_direction = string_to_direction(back_str);
1008       tux->set_tile_pos(p);
1009     }
1010
1011   lisp_object_t* level_cur = 0;
1012   if (reader.read_lisp("levels", &level_cur))
1013     {
1014       while(level_cur)
1015         {
1016           lisp_object_t* sym  = lisp_car(lisp_car(level_cur));
1017           lisp_object_t* data = lisp_cdr(lisp_car(level_cur));
1018
1019           if (strcmp(lisp_symbol(sym), "level") == 0)
1020             {
1021               std::string name;
1022               bool solved = false;
1023
1024               LispReader level_reader(data);
1025               level_reader.read_string("name",   &name);
1026               level_reader.read_bool("solved", &solved);
1027
1028               for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1029                 {
1030                   if (name == i->name)
1031                     i->solved = solved;
1032                 }
1033             }
1034
1035           level_cur = lisp_cdr(level_cur);
1036         }
1037     }
1038
1039   lisp_free(savegame);
1040 }
1041
1042 } // namespace WorldMapNS
1043
1044 /* Local Variables: */
1045 /* mode:c++ */
1046 /* End: */
1047