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 "screen/texture.h"
  27 #include "screen/screen.h"
  28 #include "screen/drawing_context.h"
  29 #include "lispreader.h"
  30 #include "gameloop.h"
  31 #include "setup.h"
  32 #include "sector.h"
  33 #include "worldmap.h"
  34 #include "resources.h"
  35
  36 namespace WorldMapNS {
  37
  38 Direction reverse_dir(Direction direction)
  39 {
  40   switch(direction)
  41     {
  42     case D_WEST:
  43       return D_EAST;
  44     case D_EAST:
  45       return D_WEST;
  46     case D_NORTH:
  47       return D_SOUTH;
  48     case D_SOUTH:
  49       return D_NORTH;
  50     case D_NONE:
  51       return D_NONE;
  52     }
  53   return D_NONE;
  54 }
  55
  56 std::string
  57 direction_to_string(Direction direction)
  58 {
  59   switch(direction)
  60     {
  61     case D_WEST:
  62       return "west";
  63     case D_EAST:
  64       return "east";
  65     case D_NORTH:
  66       return "north";
  67     case D_SOUTH:
  68       return "south";
  69     default:
  70       return "none";
  71     }
  72 }
  73
  74 Direction
  75 string_to_direction(const std::string& directory)
  76 {
  77   if (directory == "west")
  78     return D_WEST;
  79   else if (directory == "east")
  80     return D_EAST;
  81   else if (directory == "north")
  82     return D_NORTH;
  83   else if (directory == "south")
  84     return D_SOUTH;
  85   else
  86     return D_NONE;
  87 }
  88
  89 TileManager::TileManager()
  90 {
  91   std::string stwt_filename = datadir +  "/images/worldmap/antarctica.stwt";
  92   lisp_object_t* root_obj = lisp_read_from_file(stwt_filename);
  93
  94   if (!root_obj)
  95     st_abort("Couldn't load file", stwt_filename);
  96
  97   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap-tiles") == 0)
  98     {
  99       lisp_object_t* cur = lisp_cdr(root_obj);
 100
 101       while(!lisp_nil_p(cur))
 102         {
 103           lisp_object_t* element = lisp_car(cur);
 104
 105           if (strcmp(lisp_symbol(lisp_car(element)), "tile") == 0)
 106             {
 107               int id = 0;
 108               std::string filename = "<invalid>";
 109
 110               Tile* tile = new Tile;
 111               tile->north = true;
 112               tile->east  = true;
 113               tile->south = true;
 114               tile->west  = true;
 115               tile->stop  = true;
 116               tile->auto_walk = false;
 117
 118               LispReader reader(lisp_cdr(element));
 119               reader.read_int("id", id);
 120               reader.read_bool("north", tile->north);
 121               reader.read_bool("south", tile->south);
 122               reader.read_bool("west",  tile->west);
 123               reader.read_bool("east",  tile->east);
 124               reader.read_bool("stop",  tile->stop);
 125               reader.read_bool("auto-walk",  tile->auto_walk);
 126               reader.read_string("image", filename);
 127
 128               tile->sprite = new Surface(
 129                            datadir +  "/images/worldmap/" + filename,
 130                            USE_ALPHA);
 131
 132               if (id >= int(tiles.size()))
 133                 tiles.resize(id+1);
 134
 135               tiles[id] = tile;
 136             }
 137           else
 138             {
 139               puts("Unhandled symbol");
 140             }
 141
 142           cur = lisp_cdr(cur);
 143         }
 144     }
 145   else
 146     {
 147       assert(0);
 148     }
 149
 150   lisp_free(root_obj);
 151 }
 152
 153 TileManager::~TileManager()
 154 {
 155   for(std::vector<Tile*>::iterator i = tiles.begin(); i != tiles.end(); ++i)
 156     delete *i;
 157 }
 158
 159 Tile*
 160 TileManager::get(int i)
 161 {
 162   assert(i >=0 && i < int(tiles.size()));
 163   return tiles[i];
 164 }
 165
 166 //---------------------------------------------------------------------------
 167
 168 Tux::Tux(WorldMap* worldmap_)
 169   : worldmap(worldmap_)
 170 {
 171   largetux_sprite = new Surface(datadir +  "/images/worldmap/tux.png", USE_ALPHA);
 172   firetux_sprite = new Surface(datadir +  "/images/worldmap/firetux.png", USE_ALPHA);
 173   smalltux_sprite = new Surface(datadir +  "/images/worldmap/smalltux.png", USE_ALPHA);
 174
 175   offset = 0;
 176   moving = false;
 177   tile_pos.x = 4;
 178   tile_pos.y = 5;
 179   direction = D_NONE;
 180   input_direction = D_NONE;
 181 }
 182
 183 Tux::~Tux()
 184 {
 185   delete smalltux_sprite;
 186   delete firetux_sprite;
 187   delete largetux_sprite;
 188 }
 189
 190 void
 191 Tux::draw(DrawingContext& context, const Vector& offset)
 192 {
 193   Vector pos = get_pos();
 194   switch (player_status.bonus)
 195     {
 196     case PlayerStatus::GROWUP_BONUS:
 197       context.draw_surface(largetux_sprite,
 198           Vector(pos.x + offset.x, pos.y + offset.y - 10), LAYER_OBJECTS);
 199       break;
 200     case PlayerStatus::FLOWER_BONUS:
 201       context.draw_surface(firetux_sprite,
 202           Vector(pos.x + offset.x, pos.y + offset.y - 10), LAYER_OBJECTS);
 203       break;
 204     case PlayerStatus::NO_BONUS:
 205       context.draw_surface(smalltux_sprite,
 206           Vector(pos.x + offset.x, pos.y + offset.y - 10), LAYER_OBJECTS);
 207       break;
 208     }
 209 }
 210
 211
 212 Vector
 213 Tux::get_pos()
 214 {
 215   float x = tile_pos.x * 32;
 216   float y = tile_pos.y * 32;
 217
 218   switch(direction)
 219     {
 220     case D_WEST:
 221       x -= offset - 32;
 222       break;
 223     case D_EAST:
 224       x += offset - 32;
 225       break;
 226     case D_NORTH:
 227       y -= offset - 32;
 228       break;
 229     case D_SOUTH:
 230       y += offset - 32;
 231       break;
 232     case D_NONE:
 233       break;
 234     }
 235
 236   return Vector((int)x, (int)y);
 237 }
 238
 239 void
 240 Tux::stop()
 241 {
 242   offset = 0;
 243   direction = D_NONE;
 244   moving = false;
 245 }
 246
 247 void
 248 Tux::action(float delta)
 249 {
 250   if (!moving)
 251     {
 252       if (input_direction != D_NONE)
 253         {
 254           WorldMap::Level* level = worldmap->at_level();
 255
 256           // We got a new direction, so lets start walking when possible
 257           Vector next_tile;
 258           if ((!level || level->solved)
 259               && worldmap->path_ok(input_direction, tile_pos, &next_tile))
 260             {
 261               tile_pos = next_tile;
 262               moving = true;
 263               direction = input_direction;
 264               back_direction = reverse_dir(direction);
 265             }
 266           else if (input_direction == back_direction)
 267             {
 268               std::cout << "Back triggered" << std::endl;
 269               moving = true;
 270               direction = input_direction;
 271               tile_pos = worldmap->get_next_tile(tile_pos, direction);
 272               back_direction = reverse_dir(direction);
 273             }
 274         }
 275     }
 276   else
 277     {
 278       // Let tux walk a few pixels (20 pixel/sec)
 279       offset += 20.0f * delta;
 280
 281       if (offset > 32)
 282         { // We reached the next tile, so we check what to do now
 283           offset -= 32;
 284
 285           if (worldmap->at(tile_pos)->stop || worldmap->at_level())
 286             {
 287               stop();
 288             }
 289           else
 290             {
 291               if (worldmap->at(tile_pos)->auto_walk)
 292                 { // Turn to a new direction
 293                   Tile* tile = worldmap->at(tile_pos);
 294                   Direction dir = D_NONE;
 295
 296                   if (tile->north && back_direction != D_NORTH)
 297                     dir = D_NORTH;
 298                   else if (tile->south && back_direction != D_SOUTH)
 299                     dir = D_SOUTH;
 300                   else if (tile->east && back_direction != D_EAST)
 301                     dir = D_EAST;
 302                   else if (tile->west && back_direction != D_WEST)
 303                     dir = D_WEST;
 304
 305                   if (dir != D_NONE)
 306                     {
 307                       direction = dir;
 308                       back_direction = reverse_dir(direction);
 309                     }
 310                   else
 311                     {
 312                       // Should never be reached if tiledata is good
 313                       stop();
 314                       return;
 315                     }
 316                 }
 317
 318               // Walk automatically to the next tile
 319               Vector next_tile;
 320               if (worldmap->path_ok(direction, tile_pos, &next_tile))
 321                 {
 322                   tile_pos = next_tile;
 323                 }
 324               else
 325                 {
 326                   puts("Tilemap data is buggy");
 327                   stop();
 328                 }
 329             }
 330         }
 331     }
 332 }
 333
 334 //---------------------------------------------------------------------------
 335 Tile::Tile()
 336 {
 337 }
 338
 339 Tile::~Tile()
 340 {
 341   delete sprite;
 342 }
 343
 344 //---------------------------------------------------------------------------
 345
 346 WorldMap::WorldMap()
 347 {
 348   tile_manager = new TileManager();
 349   tux = new Tux(this);
 350
 351   width  = 20;
 352   height = 15;
 353
 354   level_sprite = new Surface(datadir +  "/images/worldmap/levelmarker.png", USE_ALPHA);
 355   leveldot_green = new Surface(datadir +  "/images/worldmap/leveldot_green.png", USE_ALPHA);
 356   leveldot_red = new Surface(datadir +  "/images/worldmap/leveldot_red.png", USE_ALPHA);
 357
 358   input_direction = D_NONE;
 359   enter_level = false;
 360
 361   name = "<no file>";
 362   music = "SALCON.MOD";
 363
 364   load_map();
 365 }
 366
 367 WorldMap::~WorldMap()
 368 {
 369   delete tux;
 370   delete tile_manager;
 371
 372   delete level_sprite;
 373   delete leveldot_green;
 374   delete leveldot_red;
 375 }
 376
 377 void
 378 WorldMap::load_map()
 379 {
 380   std::string filename = datadir +  "/levels/default/worldmap.stwm";
 381
 382   lisp_object_t* root_obj = lisp_read_from_file(filename);
 383   if (!root_obj)
 384     st_abort("Couldn't load file", filename);
 385
 386   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap") == 0)
 387     {
 388       lisp_object_t* cur = lisp_cdr(root_obj);
 389
 390       while(!lisp_nil_p(cur))
 391         {
 392           lisp_object_t* element = lisp_car(cur);
 393
 394           if (strcmp(lisp_symbol(lisp_car(element)), "tilemap") == 0)
 395             {
 396               LispReader reader(lisp_cdr(element));
 397               reader.read_int("width",  width);
 398               reader.read_int("height", height);
 399               reader.read_int_vector("data", tilemap);
 400             }
 401           else if (strcmp(lisp_symbol(lisp_car(element)), "properties") == 0)
 402             {
 403               LispReader reader(lisp_cdr(element));
 404               reader.read_string("name", name);
 405               reader.read_string("music", music);
 406             }
 407           else if (strcmp(lisp_symbol(lisp_car(element)), "levels") == 0)
 408             {
 409               lisp_object_t* cur = lisp_cdr(element);
 410
 411               while(!lisp_nil_p(cur))
 412                 {
 413                   lisp_object_t* element = lisp_car(cur);
 414
 415                   if (strcmp(lisp_symbol(lisp_car(element)), "level") == 0)
 416                     {
 417                       Level level;
 418                       LispReader reader(lisp_cdr(element));
 419                       level.solved = false;
 420
 421                       level.north = true;
 422                       level.east  = true;
 423                       level.south = true;
 424                       level.west  = true;
 425
 426                       reader.read_string("extro-filename", level.extro_filename);
 427                       reader.read_string("name", level.name);
 428                       reader.read_int("x", level.x);
 429                       reader.read_int("y", level.y);
 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(Level& 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 Vector
 575 WorldMap::get_next_tile(Vector 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, Vector old_pos, Vector* 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               PlayerStatus old_player_status = player_status;
 642
 643               std::cout << "Enter the current level: " << level->name << std::endl;
 644               // do a shriking fade to the level
 645               shrink_fade(Vector((level->x*32 + 16 + offset.x),(level->y*32 + 16
 646                       + offset.y)), 500);
 647               GameSession session(datadir +  "/levels/" + level->name,
 648                                   ST_GL_LOAD_LEVEL_FILE);
 649
 650               switch (session.run())
 651                 {
 652                 case GameSession::ES_LEVEL_FINISHED:
 653                   {
 654                     bool old_level_state = level->solved;
 655                     level->solved = true;
 656
 657                     if (session.get_current_sector()->player->got_power !=
 658                           session.get_current_sector()->player->NONE_POWER)
 659                       player_status.bonus = PlayerStatus::FLOWER_BONUS;
 660                     else if (session.get_current_sector()->player->size == BIG)
 661                       player_status.bonus = PlayerStatus::GROWUP_BONUS;
 662                     else
 663                       player_status.bonus = PlayerStatus::NO_BONUS;
 664
 665                     if (old_level_state != level->solved)
 666                       { // Try to detect the next direction to which we should walk
 667                         // FIXME: Mostly a hack
 668                         Direction dir = D_NONE;
 669
 670                         Tile* tile = at(tux->get_tile_pos());
 671
 672                         if (tile->north && tux->back_direction != D_NORTH)
 673                           dir = D_NORTH;
 674                         else if (tile->south && tux->back_direction != D_SOUTH)
 675                           dir = D_SOUTH;
 676                         else if (tile->east && tux->back_direction != D_EAST)
 677                           dir = D_EAST;
 678                         else if (tile->west && tux->back_direction != D_WEST)
 679                           dir = D_WEST;
 680
 681                         if (dir != D_NONE)
 682                           {
 683                             tux->set_direction(dir);
 684                             //tux->update(delta);
 685                           }
 686
 687                         std::cout << "Walk to dir: " << dir << std::endl;
 688                       }
 689
 690                     if (!level->extro_filename.empty())
 691                       {
 692                         MusicRef theme =
 693                           music_manager->load_music(datadir + "/music/theme.mod");
 694                         music_manager->play_music(theme);
 695                         // Display final credits and go back to the main menu
 696                         display_text_file(level->extro_filename,
 697                                           "/images/background/extro.jpg", SCROLL_SPEED_MESSAGE);
 698                         display_text_file("CREDITS",
 699                                           "/images/background/oiltux.jpg", SCROLL_SPEED_CREDITS);
 700                         quit = true;
 701                       }
 702                   }
 703
 704                   break;
 705                 case GameSession::ES_LEVEL_ABORT:
 706                   /* In case the player's abort the level, keep it using the old
 707                       status */
 708                   player_status = old_player_status;
 709                   break;
 710                 case GameSession::ES_GAME_OVER:
 711                 {
 712                   /* draw an end screen */
 713                   /* in the future, this should make a dialog a la SuperMario, asking
 714                   if the player wants to restart the world map with no score and from
 715                   level 1 */
 716                   char str[80];
 717
 718                   DrawingContext context;
 719                   context.draw_gradient(Color (0, 255, 0), Color (255, 0, 255),
 720                       LAYER_BACKGROUND0);
 721
 722                   context.draw_text_center(blue_text, "GAMEOVER",
 723                       Vector(0, 200), LAYER_FOREGROUND1);
 724
 725                   sprintf(str, "SCORE: %d", player_status.score);
 726                   context.draw_text_center(gold_text, str,
 727                       Vector(0, 224), LAYER_FOREGROUND1);
 728
 729                   sprintf(str, "COINS: %d", player_status.distros);
 730                   context.draw_text_center(gold_text, str,
 731                       Vector(0, screen->w - 32), LAYER_FOREGROUND1);
 732
 733                   context.do_drawing();
 734
 735                   SDL_Event event;
 736                   wait_for_event(event,2000,5000,true);
 737
 738                   quit = true;
 739                   player_status.reset();
 740                   break;
 741                 }
 742                 case GameSession::ES_NONE:
 743                   assert(false);
 744                   // Should never be reached
 745                   break;
 746                 }
 747
 748               music_manager->play_music(song);
 749               Menu::set_current(0);
 750               if (!savegame_file.empty())
 751                 savegame(savegame_file);
 752               return;
 753             }
 754         }
 755       else
 756         {
 757           std::cout << "Nothing to enter at: "
 758                     << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << std::endl;
 759         }
 760     }
 761   else
 762     {
 763       tux->action(delta);
 764       tux->set_direction(input_direction);
 765     }
 766
 767   Menu* menu = Menu::current();
 768   if(menu)
 769     {
 770       menu->action();
 771
 772       if(menu == worldmap_menu)
 773         {
 774           switch (worldmap_menu->check())
 775             {
 776             case MNID_RETURNWORLDMAP: // Return to game
 777               break;
 778             case MNID_QUITWORLDMAP: // Quit Worldmap
 779               quit = true;
 780               break;
 781             }
 782         }
 783       else if(menu == options_menu)
 784         {
 785           process_options_menu();
 786         }
 787     }
 788 }
 789
 790 Tile*
 791 WorldMap::at(Vector p)
 792 {
 793   assert(p.x >= 0
 794          && p.x < width
 795          && p.y >= 0
 796          && p.y < height);
 797
 798   int x = int(p.x);
 799   int y = int(p.y);
 800   return tile_manager->get(tilemap[width * y + x]);
 801 }
 802
 803 WorldMap::Level*
 804 WorldMap::at_level()
 805 {
 806   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 807     {
 808       if (i->x == tux->get_tile_pos().x &&
 809           i->y == tux->get_tile_pos().y)
 810         return &*i;
 811     }
 812
 813   return 0;
 814 }
 815
 816
 817 void
 818 WorldMap::draw(DrawingContext& context, const Vector& offset)
 819 {
 820   for(int y = 0; y < height; ++y)
 821     for(int x = 0; x < width; ++x)
 822       {
 823         Tile* tile = at(Vector(x, y));
 824         context.draw_surface(tile->sprite,
 825             Vector(x*32 + offset.x, y*32 + offset.y), LAYER_TILES);
 826       }
 827
 828   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 829     {
 830       if (i->solved)
 831         context.draw_surface(leveldot_green,
 832             Vector(i->x*32 + offset.x, i->y*32 + offset.y), LAYER_TILES+1);
 833       else
 834         context.draw_surface(leveldot_red,
 835             Vector(i->x*32 + offset.x, i->y*32 + offset.y), LAYER_TILES+1);
 836     }
 837
 838   tux->draw(context, offset);
 839   draw_status(context);
 840 }
 841
 842 void
 843 WorldMap::draw_status(DrawingContext& context)
 844 {
 845   char str[80];
 846   sprintf(str, "%d", player_status.score);
 847
 848   context.draw_text(white_text, "SCORE", Vector(0, 0), LAYER_FOREGROUND1);
 849   context.draw_text(gold_text, str, Vector(96, 0), LAYER_FOREGROUND1);
 850
 851   sprintf(str, "%d", player_status.distros);
 852   context.draw_text(white_text, "COINS", Vector(screen->w/2 - 16*5, 0),
 853       LAYER_FOREGROUND1);
 854   context.draw_text(gold_text, str, Vector(screen->w/2 + (16*5)/2, 0),
 855         LAYER_FOREGROUND1);
 856
 857   context.draw_text(white_text, "LIVES",
 858       Vector(screen->w - white_text->get_text_width("LIVES")*2, 0),
 859       LAYER_FOREGROUND1);
 860   if (player_status.lives >= 5)
 861     {
 862       sprintf(str, "%dx", player_status.lives);
 863       context.draw_text(gold_text, str,
 864           Vector(screen->w - gold_text->get_text_width(str) - tux_life->w, 0),
 865           LAYER_FOREGROUND1);
 866       context.draw_surface(tux_life, Vector(screen->w - gold_text->w, 0),
 867           LAYER_FOREGROUND1);
 868     }
 869   else
 870     {
 871       for(int i= 0; i < player_status.lives; ++i)
 872         context.draw_surface(tux_life,
 873             Vector(screen->w - tux_life->w*4 + (tux_life->w*i), 0),
 874             LAYER_FOREGROUND1);
 875     }
 876
 877   if (!tux->is_moving())
 878     {
 879       for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 880         {
 881           if (i->x == tux->get_tile_pos().x &&
 882               i->y == tux->get_tile_pos().y)
 883             {
 884               if(i->title == "")
 885                 get_level_title(*i);
 886
 887               context.draw_text(white_text, i->title,
 888                   Vector(screen->w/2 - white_text->get_text_width(i->title)/2,
 889                          screen->h - white_text->get_height() - 50),
 890                   LAYER_FOREGROUND1);
 891               break;
 892             }
 893         }
 894     }
 895 }
 896
 897 void
 898 WorldMap::display()
 899 {
 900   Menu::set_current(0);
 901
 902   quit = false;
 903
 904   song = music_manager->load_music(datadir +  "/music/" + music);
 905   music_manager->play_music(song);
 906
 907   unsigned int last_update_time;
 908   unsigned int update_time;
 909
 910   last_update_time = update_time = st_get_ticks();
 911
 912   DrawingContext context;
 913   while(!quit)
 914     {
 915       float delta = ((float)(update_time-last_update_time))/100.0;
 916
 917       delta *= 1.3f;
 918
 919       if (delta > 10.0f)
 920         delta = .3f;
 921
 922       last_update_time = update_time;
 923       update_time      = st_get_ticks();
 924
 925       Vector tux_pos = tux->get_pos();
 926       if (1)
 927         {
 928           offset.x = -tux_pos.x + screen->w/2;
 929           offset.y = -tux_pos.y + screen->h/2;
 930
 931           if (offset.x > 0) offset.x = 0;
 932           if (offset.y > 0) offset.y = 0;
 933
 934           if (offset.x < screen->w - width*32) offset.x = screen->w - width*32;
 935           if (offset.y < screen->h - height*32) offset.y = screen->h - height*32;
 936         }
 937
 938       draw(context, offset);
 939       get_input();
 940       update(delta);
 941
 942       if(Menu::current())
 943         {
 944           Menu::current()->draw(context);
 945           mouse_cursor->draw(context);
 946         }
 947
 948       context.do_drawing();
 949
 950       SDL_Delay(20);
 951     }
 952 }
 953
 954 void
 955 WorldMap::savegame(const std::string& filename)
 956 {
 957   std::cout << "savegame: " << filename << std::endl;
 958   std::ofstream out(filename.c_str());
 959
 960   int nb_solved_levels = 0;
 961   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 962     {
 963       if (i->solved)
 964         ++nb_solved_levels;
 965     }
 966
 967   out << "(supertux-savegame\n"
 968       << "  (version 1)\n"
 969       << "  (title  \"Icyisland - " << nb_solved_levels << "/" << levels.size() << "\")\n"
 970       << "  (lives   " << player_status.lives << ")\n"
 971       << "  (score   " << player_status.score << ")\n"
 972       << "  (distros " << player_status.distros << ")\n"
 973       << "  (tux (x " << tux->get_tile_pos().x << ") (y " << tux->get_tile_pos().y << ")\n"
 974       << "       (back \"" << direction_to_string(tux->back_direction) << "\")\n"
 975       << "       (bonus \"" << bonus_to_string(player_status.bonus) <<  "\"))\n"
 976       << "  (levels\n";
 977
 978   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 979     {
 980       if (i->solved)
 981         {
 982           out << "     (level (name \"" << i->name << "\")\n"
 983               << "            (solved #t))\n";
 984         }
 985     }
 986
 987   out << "   )\n"
 988       << " )\n\n;; EOF ;;" << std::endl;
 989 }
 990
 991 void
 992 WorldMap::loadgame(const std::string& filename)
 993 {
 994   std::cout << "loadgame: " << filename << std::endl;
 995   savegame_file = filename;
 996
 997   if (access(filename.c_str(), F_OK) != 0)
 998     return;
 999
1000   lisp_object_t* savegame = lisp_read_from_file(filename);
1001   if (!savegame)
1002     {
1003       std::cout << "WorldMap:loadgame: File not found: " << filename << std::endl;
1004       return;
1005     }
1006
1007   lisp_object_t* cur = savegame;
1008
1009   if (strcmp(lisp_symbol(lisp_car(cur)), "supertux-savegame") != 0)
1010     return;
1011
1012   cur = lisp_cdr(cur);
1013   LispReader reader(cur);
1014
1015   reader.read_int("lives", player_status.lives);
1016   reader.read_int("score", player_status.score);
1017   reader.read_int("distros", player_status.distros);
1018
1019   if (player_status.lives < 0)
1020     player_status.lives = START_LIVES;
1021
1022   lisp_object_t* tux_cur = 0;
1023   if (reader.read_lisp("tux", tux_cur))
1024     {
1025       Vector p;
1026       std::string back_str = "none";
1027       std::string bonus_str = "none";
1028
1029       LispReader tux_reader(tux_cur);
1030       tux_reader.read_float("x", p.x);
1031       tux_reader.read_float("y", p.y);
1032       tux_reader.read_string("back", back_str);
1033       tux_reader.read_string("bonus", bonus_str);
1034
1035       player_status.bonus = string_to_bonus(bonus_str);
1036       tux->back_direction = string_to_direction(back_str);
1037       tux->set_tile_pos(p);
1038     }
1039
1040   lisp_object_t* level_cur = 0;
1041   if (reader.read_lisp("levels", level_cur))
1042     {
1043       while(level_cur)
1044         {
1045           lisp_object_t* sym  = lisp_car(lisp_car(level_cur));
1046           lisp_object_t* data = lisp_cdr(lisp_car(level_cur));
1047
1048           if (strcmp(lisp_symbol(sym), "level") == 0)
1049             {
1050               std::string name;
1051               bool solved = false;
1052
1053               LispReader level_reader(data);
1054               level_reader.read_string("name", name);
1055               level_reader.read_bool("solved", solved);
1056
1057               for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1058                 {
1059                   if (name == i->name)
1060                     i->solved = solved;
1061                 }
1062             }
1063
1064           level_cur = lisp_cdr(level_cur);
1065         }
1066     }
1067
1068   lisp_free(savegame);
1069 }
1070
1071 } // namespace WorldMapNS
1072
1073 /* Local Variables: */
1074 /* mode:c++ */
1075 /* End: */
1076