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 #include <config.h>
  20
  21 #include <iostream>
  22 #include <fstream>
  23 #include <vector>
  24 #include <cassert>
  25 #include <stdexcept>
  26 #include <sstream>
  27 #include <unistd.h>
  28
  29 #include "gettext.hpp"
  30 #include "video/surface.hpp"
  31 #include "video/screen.hpp"
  32 #include "video/drawing_context.hpp"
  33 #include "sprite/sprite_manager.hpp"
  34 #include "audio/sound_manager.hpp"
  35 #include "lisp/parser.hpp"
  36 #include "lisp/lisp.hpp"
  37 #include "lisp/list_iterator.hpp"
  38 #include "lisp/writer.hpp"
  39 #include "game_session.hpp"
  40 #include "sector.hpp"
  41 #include "worldmap.hpp"
  42 #include "resources.hpp"
  43 #include "misc.hpp"
  44 #include "player_status.hpp"
  45 #include "textscroller.hpp"
  46 #include "main.hpp"
  47 #include "spawn_point.hpp"
  48 #include "file_system.hpp"
  49 #include "gui/menu.hpp"
  50 #include "gui/mousecursor.hpp"
  51 #include "control/joystickkeyboardcontroller.hpp"
  52 #include "object/background.hpp"
  53 #include "object/tilemap.hpp"
  54 #include "scripting/script_interpreter.hpp"
  55 #include "exceptions.hpp"
  56
  57 Menu* worldmap_menu  = 0;
  58
  59 static const float TUXSPEED = 200;
  60 static const float map_message_TIME = 2.8;
  61
  62 namespace WorldMapNS {
  63
  64 Direction reverse_dir(Direction direction)
  65 {
  66   switch(direction)
  67     {
  68     case D_WEST:
  69       return D_EAST;
  70     case D_EAST:
  71       return D_WEST;
  72     case D_NORTH:
  73       return D_SOUTH;
  74     case D_SOUTH:
  75       return D_NORTH;
  76     case D_NONE:
  77       return D_NONE;
  78     }
  79   return D_NONE;
  80 }
  81
  82 std::string
  83 direction_to_string(Direction direction)
  84 {
  85   switch(direction)
  86     {
  87     case D_WEST:
  88       return "west";
  89     case D_EAST:
  90       return "east";
  91     case D_NORTH:
  92       return "north";
  93     case D_SOUTH:
  94       return "south";
  95     default:
  96       return "none";
  97     }
  98 }
  99
 100 Direction
 101 string_to_direction(const std::string& directory)
 102 {
 103   if (directory == "west")
 104     return D_WEST;
 105   else if (directory == "east")
 106     return D_EAST;
 107   else if (directory == "north")
 108     return D_NORTH;
 109   else if (directory == "south")
 110     return D_SOUTH;
 111   else
 112     return D_NONE;
 113 }
 114
 115 //---------------------------------------------------------------------------
 116
 117 Tux::Tux(WorldMap* worldmap_)
 118   : worldmap(worldmap_)
 119 {
 120   tux_sprite = sprite_manager->create("worldmaptux");
 121
 122   offset = 0;
 123   moving = false;
 124   direction = D_NONE;
 125   input_direction = D_NONE;
 126 }
 127
 128 Tux::~Tux()
 129 {
 130   delete tux_sprite;
 131 }
 132
 133 void
 134 Tux::draw(DrawingContext& context)
 135 {
 136   switch (player_status->bonus) {
 137     case GROWUP_BONUS:
 138       tux_sprite->set_action("large");
 139       break;
 140     case FIRE_BONUS:
 141       tux_sprite->set_action("fire");
 142       break;
 143     case NO_BONUS:
 144       tux_sprite->set_action("small");
 145       break;
 146     default:
 147 #ifdef DEBUG
 148       std::cerr << "Bonus type not handled in worldmap.\n";
 149 #endif
 150       tux_sprite->set_action("large");
 151       break;
 152   }
 153
 154   tux_sprite->draw(context, get_pos(), LAYER_OBJECTS);
 155 }
 156
 157
 158 Vector
 159 Tux::get_pos()
 160 {
 161   float x = tile_pos.x * 32;
 162   float y = tile_pos.y * 32;
 163
 164   switch(direction)
 165     {
 166     case D_WEST:
 167       x -= offset - 32;
 168       break;
 169     case D_EAST:
 170       x += offset - 32;
 171       break;
 172     case D_NORTH:
 173       y -= offset - 32;
 174       break;
 175     case D_SOUTH:
 176       y += offset - 32;
 177       break;
 178     case D_NONE:
 179       break;
 180     }
 181
 182   return Vector(x, y);
 183 }
 184
 185 void
 186 Tux::stop()
 187 {
 188   offset = 0;
 189   direction = D_NONE;
 190   input_direction = D_NONE;
 191   moving = false;
 192 }
 193
 194 void
 195 Tux::set_direction(Direction dir)
 196 {
 197   input_direction = dir;
 198 }
 199
 200 void
 201 Tux::update(float delta)
 202 {
 203   // check controller
 204   if(main_controller->pressed(Controller::UP))
 205     input_direction = D_NORTH;
 206   else if(main_controller->pressed(Controller::DOWN))
 207     input_direction = D_SOUTH;
 208   else if(main_controller->pressed(Controller::LEFT))
 209     input_direction = D_WEST;
 210   else if(main_controller->pressed(Controller::RIGHT))
 211     input_direction = D_EAST;
 212
 213   if(!moving)
 214     {
 215       if (input_direction != D_NONE)
 216         {
 217           WorldMap::Level* level = worldmap->at_level();
 218
 219           // We got a new direction, so lets start walking when possible
 220           Vector next_tile;
 221           if ((!level || level->solved)
 222               && worldmap->path_ok(input_direction, tile_pos, &next_tile))
 223             {
 224               tile_pos = next_tile;
 225               moving = true;
 226               direction = input_direction;
 227               back_direction = reverse_dir(direction);
 228             }
 229           else if (input_direction == back_direction)
 230             {
 231               moving = true;
 232               direction = input_direction;
 233               tile_pos = worldmap->get_next_tile(tile_pos, direction);
 234               back_direction = reverse_dir(direction);
 235             }
 236         }
 237     }
 238   else
 239     {
 240       // Let tux walk
 241       offset += TUXSPEED * delta;
 242
 243       if (offset > 32)
 244         { // We reached the next tile, so we check what to do now
 245           offset -= 32;
 246
 247           WorldMap::SpecialTile* special_tile = worldmap->at_special_tile();
 248           if(special_tile && special_tile->passive_message)
 249             {  // direction and the apply_action_ are opposites, since they "see"
 250                // directions in a different way
 251             if((direction == D_NORTH && special_tile->apply_action_south) ||
 252                (direction == D_SOUTH && special_tile->apply_action_north) ||
 253                (direction == D_WEST && special_tile->apply_action_east) ||
 254                (direction == D_EAST && special_tile->apply_action_west))
 255               {
 256               worldmap->passive_message = special_tile->map_message;
 257               worldmap->passive_message_timer.start(map_message_TIME);
 258               }
 259             }
 260
 261           if (worldmap->at(tile_pos)->getData() & Tile::WORLDMAP_STOP ||
 262              (special_tile && !special_tile->passive_message) ||
 263               worldmap->at_level())
 264             {
 265               if(special_tile && !special_tile->map_message.empty() &&
 266                 !special_tile->passive_message)
 267                 worldmap->passive_message_timer.start(0);
 268               stop();
 269             }
 270           else
 271             {
 272               const Tile* tile = worldmap->at(tile_pos);
 273               if (direction != input_direction)
 274                 {
 275                   // Turn to a new direction
 276                   const Tile* tile = worldmap->at(tile_pos);
 277
 278                   if((tile->getData() & Tile::WORLDMAP_NORTH
 279                       && input_direction == D_NORTH) ||
 280                      (tile->getData() & Tile::WORLDMAP_SOUTH
 281                       && input_direction == D_SOUTH) ||
 282                      (tile->getData() & Tile::WORLDMAP_EAST
 283                       && input_direction == D_EAST) ||
 284                      (tile->getData() & Tile::WORLDMAP_WEST
 285                       && input_direction == D_WEST))
 286                     {  // player has changed direction during auto-movement
 287                       direction = input_direction;
 288                       back_direction = reverse_dir(direction);
 289                     }
 290                   else
 291                     {  // player has changed to impossible tile
 292                       back_direction = reverse_dir(direction);
 293                       stop();
 294                     }
 295                 }
 296               else
 297                 {
 298                 Direction dir = D_NONE;
 299
 300                 if (tile->getData() & Tile::WORLDMAP_NORTH
 301                     && back_direction != D_NORTH)
 302                   dir = D_NORTH;
 303                 else if (tile->getData() & Tile::WORLDMAP_SOUTH
 304                     && back_direction != D_SOUTH)
 305                   dir = D_SOUTH;
 306                 else if (tile->getData() & Tile::WORLDMAP_EAST
 307                     && back_direction != D_EAST)
 308                   dir = D_EAST;
 309                 else if (tile->getData() & Tile::WORLDMAP_WEST
 310                     && back_direction != D_WEST)
 311                   dir = D_WEST;
 312
 313                 if (dir != D_NONE)
 314                   {
 315                   direction = dir;
 316                   input_direction = direction;
 317                   back_direction = reverse_dir(direction);
 318                   }
 319                 else
 320                   {
 321                   // Should never be reached if tiledata is good
 322                   stop();
 323                   return;
 324                   }
 325                 }
 326
 327               // Walk automatically to the next tile
 328               if(direction != D_NONE)
 329                 {
 330                 Vector next_tile;
 331                 if (worldmap->path_ok(direction, tile_pos, &next_tile))
 332                   {
 333                   tile_pos = next_tile;
 334                   }
 335                 else
 336                   {
 337                   puts("Tilemap data is buggy");
 338                   stop();
 339                   }
 340                 }
 341             }
 342         }
 343     }
 344 }
 345
 346 //---------------------------------------------------------------------------
 347
 348 WorldMap::WorldMap()
 349   : tux(0), solids(0)
 350 {
 351   tile_manager = new TileManager("images/worldmap.strf");
 352
 353   tux = new Tux(this);
 354   add_object(tux);
 355
 356   messagedot = new Surface("images/worldmap/common/messagedot.png");
 357   teleporterdot = new Surface("images/worldmap/common/teleporterdot.png");
 358
 359   name = "<no title>";
 360   music = "salcon.ogg";
 361   intro_displayed = false;
 362
 363   total_stats.reset();
 364 }
 365
 366 WorldMap::~WorldMap()
 367 {
 368   clear_objects();
 369   for(SpawnPoints::iterator i = spawn_points.begin();
 370       i != spawn_points.end(); ++i) {
 371     delete *i;
 372   }
 373   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i) {
 374     Level& level = *i;
 375     delete level.sprite;
 376   }
 377
 378   delete tile_manager;
 379
 380   delete messagedot;
 381   delete teleporterdot;
 382 }
 383
 384 void
 385 WorldMap::add_object(GameObject* object)
 386 {
 387   TileMap* tilemap = dynamic_cast<TileMap*> (object);
 388   if(tilemap != 0 && tilemap->is_solid()) {
 389     solids = tilemap;
 390   }
 391
 392   game_objects.push_back(object);
 393 }
 394
 395 void
 396 WorldMap::clear_objects()
 397 {
 398   for(GameObjects::iterator i = game_objects.begin();
 399       i != game_objects.end(); ++i)
 400     delete *i;
 401   game_objects.clear();
 402   solids = 0;
 403   tux = new Tux(this);
 404   add_object(tux);
 405 }
 406
 407 // Don't forget to set map_filename before calling this
 408 void
 409 WorldMap::load_map()
 410 {
 411   levels_path = FileSystem::dirname(map_filename);
 412
 413   try {
 414     lisp::Parser parser;
 415     std::auto_ptr<lisp::Lisp> root (parser.parse(map_filename));
 416
 417     const lisp::Lisp* lisp = root->get_lisp("supertux-worldmap");
 418     if(!lisp)
 419       throw std::runtime_error("file isn't a supertux-worldmap file.");
 420
 421     clear_objects();
 422     lisp::ListIterator iter(lisp);
 423     while(iter.next()) {
 424       if(iter.item() == "tilemap") {
 425         add_object(new TileMap(*(iter.lisp()), tile_manager));
 426       } else if(iter.item() == "background") {
 427         add_object(new Background(*(iter.lisp())));
 428       } else if(iter.item() == "properties") {
 429         const lisp::Lisp* props = iter.lisp();
 430         props->get("name", name);
 431         props->get("music", music);
 432       } else if(iter.item() == "intro-script") {
 433         iter.value()->get(intro_script);
 434       } else if(iter.item() == "spawnpoint") {
 435         SpawnPoint* sp = new SpawnPoint(iter.lisp());
 436         spawn_points.push_back(sp);
 437       } else if(iter.item() == "level") {
 438         parse_level_tile(iter.lisp());
 439       } else if(iter.item() == "special-tile") {
 440         parse_special_tile(iter.lisp());
 441       } else {
 442         std::cerr << "Unknown token '" << iter.item() << "' in worldmap.\n";
 443       }
 444     }
 445     if(solids == 0)
 446       throw std::runtime_error("No solid tilemap specified");
 447
 448     // search for main spawnpoint
 449     for(SpawnPoints::iterator i = spawn_points.begin();
 450         i != spawn_points.end(); ++i) {
 451       SpawnPoint* sp = *i;
 452       if(sp->name == "main") {
 453         Vector p = sp->pos;
 454         tux->set_tile_pos(p);
 455         break;
 456       }
 457     }
 458
 459   } catch(std::exception& e) {
 460     std::stringstream msg;
 461     msg << "Problem when parsing worldmap '" << map_filename << "': " <<
 462       e.what();
 463     throw std::runtime_error(msg.str());
 464   }
 465 }
 466
 467 void
 468 WorldMap::parse_special_tile(const lisp::Lisp* lisp)
 469 {
 470   SpecialTile special_tile;
 471
 472   lisp->get("x", special_tile.pos.x);
 473   lisp->get("y", special_tile.pos.y);
 474   lisp->get("map-message", special_tile.map_message);
 475   special_tile.passive_message = false;
 476   lisp->get("passive-message", special_tile.passive_message);
 477   special_tile.teleport_dest = Vector(-1,-1);
 478   lisp->get("teleport-to-x", special_tile.teleport_dest.x);
 479   lisp->get("teleport-to-y", special_tile.teleport_dest.y);
 480   special_tile.invisible = false;
 481   lisp->get("invisible-tile", special_tile.invisible);
 482
 483   special_tile.apply_action_north = true;
 484   special_tile.apply_action_south = true;
 485   special_tile.apply_action_east = true;
 486   special_tile.apply_action_west = true;
 487
 488   std::string apply_direction;
 489   lisp->get("apply-to-direction", apply_direction);
 490   if(!apply_direction.empty()) {
 491     special_tile.apply_action_north = false;
 492     special_tile.apply_action_south = false;
 493     special_tile.apply_action_east = false;
 494     special_tile.apply_action_west = false;
 495     if(apply_direction.find("north") != std::string::npos)
 496       special_tile.apply_action_north = true;
 497     if(apply_direction.find("south") != std::string::npos)
 498       special_tile.apply_action_south = true;
 499     if(apply_direction.find("east") != std::string::npos)
 500       special_tile.apply_action_east = true;
 501     if(apply_direction.find("west") != std::string::npos)
 502       special_tile.apply_action_west = true;
 503   }
 504
 505   special_tiles.push_back(special_tile);
 506 }
 507
 508 void
 509 WorldMap::parse_level_tile(const lisp::Lisp* level_lisp)
 510 {
 511   Level level;
 512
 513   level.solved = false;
 514
 515   level.north = true;
 516   level.east  = true;
 517   level.south = true;
 518   level.west  = true;
 519
 520   std::string sprite = "images/worldmap/common/leveldot.sprite";
 521   level_lisp->get("sprite", sprite);
 522   level.sprite = sprite_manager->create(sprite);
 523
 524   level_lisp->get("extro-script", level.extro_script);
 525   level_lisp->get("next-worldmap", level.next_worldmap);
 526
 527   level.quit_worldmap = false;
 528   level_lisp->get("quit-worldmap", level.quit_worldmap);
 529
 530   level_lisp->get("name", level.name);
 531   level_lisp->get("x", level.pos.x);
 532   level_lisp->get("y", level.pos.y);
 533
 534   level.auto_path = true;
 535   level_lisp->get("auto-path", level.auto_path);
 536
 537   level.vertical_flip = false;
 538   level_lisp->get("vertical-flip", level.vertical_flip);
 539
 540   levels.push_back(level);
 541 }
 542
 543 void
 544 WorldMap::get_level_title(Level& level)
 545 {
 546   /** get special_tile's title */
 547   level.title = "<no title>";
 548
 549   try {
 550     lisp::Parser parser;
 551     std::auto_ptr<lisp::Lisp> root (parser.parse(levels_path + level.name));
 552
 553     const lisp::Lisp* level_lisp = root->get_lisp("supertux-level");
 554     if(!level_lisp)
 555       return;
 556
 557     level_lisp->get("name", level.title);
 558   } catch(std::exception& e) {
 559     std::cerr << "Problem when reading leveltitle: " << e.what() << "\n";
 560     return;
 561   }
 562 }
 563
 564 void WorldMap::calculate_total_stats()
 565 {
 566   total_stats.reset();
 567   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 568     {
 569     if (i->solved)
 570       {
 571       total_stats += i->statistics;
 572       }
 573     }
 574 }
 575
 576 void
 577 WorldMap::on_escape_press()
 578 {
 579   // Show or hide the menu
 580   if(!Menu::current()) {
 581     Menu::set_current(worldmap_menu);
 582     tux->set_direction(D_NONE);  // stop tux movement when menu is called
 583   } else {
 584     Menu::set_current(0);
 585   }
 586 }
 587
 588 void
 589 WorldMap::get_input()
 590 {
 591   main_controller->update();
 592
 593   SDL_Event event;
 594   while (SDL_PollEvent(&event)) {
 595     if (Menu::current())
 596       Menu::current()->event(event);
 597     main_controller->process_event(event);
 598     if(event.type == SDL_QUIT)
 599       throw graceful_shutdown();
 600   }
 601 }
 602
 603 Vector
 604 WorldMap::get_next_tile(Vector pos, Direction direction)
 605 {
 606   switch(direction) {
 607     case D_WEST:
 608       pos.x -= 1;
 609       break;
 610     case D_EAST:
 611       pos.x += 1;
 612       break;
 613     case D_NORTH:
 614       pos.y -= 1;
 615       break;
 616     case D_SOUTH:
 617       pos.y += 1;
 618       break;
 619     case D_NONE:
 620       break;
 621   }
 622   return pos;
 623 }
 624
 625 bool
 626 WorldMap::path_ok(Direction direction, Vector old_pos, Vector* new_pos)
 627 {
 628   *new_pos = get_next_tile(old_pos, direction);
 629
 630   if (!(new_pos->x >= 0 && new_pos->x < solids->get_width()
 631         && new_pos->y >= 0 && new_pos->y < solids->get_height()))
 632     { // New position is outsite the tilemap
 633       return false;
 634     }
 635   else
 636     { // Check if the tile allows us to go to new_pos
 637       switch(direction)
 638         {
 639         case D_WEST:
 640           return (at(old_pos)->getData() & Tile::WORLDMAP_WEST
 641               && at(*new_pos)->getData() & Tile::WORLDMAP_EAST);
 642
 643         case D_EAST:
 644           return (at(old_pos)->getData() & Tile::WORLDMAP_EAST
 645               && at(*new_pos)->getData() & Tile::WORLDMAP_WEST);
 646
 647         case D_NORTH:
 648           return (at(old_pos)->getData() & Tile::WORLDMAP_NORTH
 649               && at(*new_pos)->getData() & Tile::WORLDMAP_SOUTH);
 650
 651         case D_SOUTH:
 652           return (at(old_pos)->getData() & Tile::WORLDMAP_SOUTH
 653               && at(*new_pos)->getData() & Tile::WORLDMAP_NORTH);
 654
 655         case D_NONE:
 656           assert(!"path_ok() can't work if direction is NONE");
 657         }
 658       return false;
 659     }
 660 }
 661
 662 void
 663 WorldMap::update(float delta)
 664 {
 665   Menu* menu = Menu::current();
 666   if(menu) {
 667     menu->update();
 668
 669     if(menu == worldmap_menu) {
 670       switch (worldmap_menu->check())
 671       {
 672         case MNID_RETURNWORLDMAP: // Return to game
 673           Menu::set_current(0);
 674           break;
 675         case MNID_QUITWORLDMAP: // Quit Worldmap
 676           quit = true;
 677           break;
 678       }
 679     } else if(menu == options_menu) {
 680       process_options_menu();
 681     }
 682
 683     return;
 684   }
 685
 686   // update GameObjects
 687   for(GameObjects::iterator i = game_objects.begin();
 688       i != game_objects.end(); ++i) {
 689     GameObject* object = *i;
 690     object->update(delta);
 691   }
 692   // remove old GameObjects
 693   for(GameObjects::iterator i = game_objects.begin();
 694       i != game_objects.end(); ) {
 695     GameObject* object = *i;
 696     if(!object->is_valid()) {
 697       delete object;
 698       i = game_objects.erase(i);
 699     } else {
 700       ++i;
 701     }
 702   }
 703
 704   bool enter_level = false;
 705   if(main_controller->pressed(Controller::ACTION)
 706       || main_controller->pressed(Controller::JUMP)
 707       || main_controller->pressed(Controller::MENU_SELECT))
 708     enter_level = true;
 709   if(main_controller->pressed(Controller::PAUSE_MENU))
 710     on_escape_press();
 711
 712   if (enter_level && !tux->is_moving())
 713     {
 714       /* Check special tile action */
 715       SpecialTile* special_tile = at_special_tile();
 716       if(special_tile)
 717         {
 718         if (special_tile->teleport_dest != Vector(-1,-1))
 719           {
 720           // TODO: an animation, camera scrolling or a fading would be a nice touch
 721           sound_manager->play("sounds/warp.wav");
 722           tux->back_direction = D_NONE;
 723           tux->set_tile_pos(special_tile->teleport_dest);
 724           SDL_Delay(1000);
 725           }
 726         }
 727
 728       /* Check level action */
 729       bool level_finished = true;
 730       Level* level = at_level();
 731       if (!level)
 732         {
 733         std::cout << "No level to enter at: "
 734           << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y
 735           << std::endl;
 736         return;
 737         }
 738
 739
 740       if (level->pos == tux->get_tile_pos())
 741         {
 742           sound_manager->stop_music();
 743           PlayerStatus old_player_status;
 744           old_player_status = *player_status;
 745
 746           // do a shriking fade to the level
 747           shrink_fade(Vector((level->pos.x*32 + 16 + offset.x),
 748                              (level->pos.y*32 + 16 + offset.y)), 500);
 749           GameSession session(levels_path + level->name,
 750                               ST_GL_LOAD_LEVEL_FILE, &level->statistics);
 751
 752           switch (session.run())
 753             {
 754             case GameSession::ES_LEVEL_FINISHED:
 755               {
 756                 level_finished = true;
 757                 bool old_level_state = level->solved;
 758                 level->solved = true;
 759                 level->sprite->set_action("solved");
 760
 761                 // deal with statistics
 762                 level->statistics.merge(global_stats);
 763                 calculate_total_stats();
 764
 765                 if (old_level_state != level->solved && level->auto_path)
 766                   { // Try to detect the next direction to which we should walk
 767                     // FIXME: Mostly a hack
 768                     Direction dir = D_NONE;
 769
 770                     const Tile* tile = at(tux->get_tile_pos());
 771
 772                     if (tile->getData() & Tile::WORLDMAP_NORTH
 773                         && tux->back_direction != D_NORTH)
 774                       dir = D_NORTH;
 775                     else if (tile->getData() & Tile::WORLDMAP_SOUTH
 776                         && tux->back_direction != D_SOUTH)
 777                       dir = D_SOUTH;
 778                     else if (tile->getData() & Tile::WORLDMAP_EAST
 779                         && tux->back_direction != D_EAST)
 780                       dir = D_EAST;
 781                     else if (tile->getData() & Tile::WORLDMAP_WEST
 782                         && tux->back_direction != D_WEST)
 783                       dir = D_WEST;
 784
 785                     if (dir != D_NONE)
 786                       {
 787                         tux->set_direction(dir);
 788                       }
 789                   }
 790               }
 791
 792               break;
 793             case GameSession::ES_LEVEL_ABORT:
 794               level_finished = false;
 795               /* In case the player's abort the level, keep it using the old
 796                   status. But the minimum lives and no bonus. */
 797               player_status->coins = old_player_status.coins;
 798               player_status->lives = std::min(old_player_status.lives, player_status->lives);
 799               player_status->bonus = NO_BONUS;
 800
 801               break;
 802             case GameSession::ES_GAME_OVER:
 803               {
 804               level_finished = false;
 805               /* draw an end screen */
 806               /* TODO: in the future, this should make a dialog a la SuperMario, asking
 807               if the player wants to restart the world map with no score and from
 808               level 1 */
 809               char str[80];
 810
 811               DrawingContext context;
 812               context.draw_gradient(Color (200,240,220), Color(200,200,220),
 813                   LAYER_BACKGROUND0);
 814
 815               context.draw_text(blue_text, _("GAMEOVER"),
 816                   Vector(SCREEN_WIDTH/2, 200), CENTER_ALLIGN, LAYER_FOREGROUND1);
 817
 818               sprintf(str, _("COINS: %d"), player_status->coins);
 819               context.draw_text(gold_text, str,
 820                   Vector(SCREEN_WIDTH/2, SCREEN_WIDTH - 32), CENTER_ALLIGN,
 821                   LAYER_FOREGROUND1);
 822
 823               total_stats.draw_message_info(context, _("Total Statistics"));
 824
 825               context.do_drawing();
 826
 827               wait_for_event(2.0, 6.0);
 828
 829               quit = true;
 830               player_status->reset();
 831               break;
 832               }
 833             case GameSession::ES_NONE:
 834               assert(false);
 835               // Should never be reached
 836               break;
 837             }
 838
 839           sound_manager->play_music(std::string("music/") + music);
 840           Menu::set_current(0);
 841           if (!savegame_file.empty())
 842             savegame(savegame_file);
 843         }
 844       /* The porpose of the next checking is that if the player lost
 845          the level (in case there is one), don't show anything */
 846       if(level_finished) {
 847         if (level->extro_script != "") {
 848           try {
 849             std::auto_ptr<ScriptInterpreter> interpreter
 850               (new ScriptInterpreter(levels_path));
 851             std::istringstream in(level->extro_script);
 852             interpreter->run_script(in, "level-extro-script");
 853             add_object(interpreter.release());
 854           } catch(std::exception& e) {
 855             std::cerr << "Couldn't run level-extro-script:" << e.what() << "\n";
 856           }
 857         }
 858
 859         if (!level->next_worldmap.empty())
 860           {
 861           // Load given worldmap
 862           loadmap(level->next_worldmap);
 863           }
 864         if (level->quit_worldmap)
 865           quit = true;
 866         }
 867     }
 868   else
 869     {
 870 //      tux->set_direction(input_direction);
 871     }
 872 }
 873
 874 const Tile*
 875 WorldMap::at(Vector p)
 876 {
 877   return solids->get_tile((int) p.x, (int) p.y);
 878 }
 879
 880 WorldMap::Level*
 881 WorldMap::at_level()
 882 {
 883   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 884     {
 885       if (i->pos == tux->get_tile_pos())
 886         return &*i;
 887     }
 888
 889   return 0;
 890 }
 891
 892 WorldMap::SpecialTile*
 893 WorldMap::at_special_tile()
 894 {
 895   for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
 896     {
 897       if (i->pos == tux->get_tile_pos())
 898         return &*i;
 899     }
 900
 901   return 0;
 902 }
 903
 904 void
 905 WorldMap::draw(DrawingContext& context)
 906 {
 907   for(GameObjects::iterator i = game_objects.begin();
 908       i != game_objects.end(); ++i) {
 909     GameObject* object = *i;
 910     object->draw(context);
 911   }
 912
 913   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 914     {
 915       const Level& level = *i;
 916       level.sprite->draw(context, level.pos*32 + Vector(16, 16), LAYER_TILES+1);
 917     }
 918
 919   for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
 920     {
 921       if(i->invisible)
 922         continue;
 923
 924       if (i->teleport_dest != Vector(-1, -1))
 925         context.draw_surface(teleporterdot,
 926                 Vector(i->pos.x*32, i->pos.y*32), LAYER_TILES+1);
 927
 928       else if (!i->map_message.empty() && !i->passive_message)
 929         context.draw_surface(messagedot,
 930                 Vector(i->pos.x*32, i->pos.y*32), LAYER_TILES+1);
 931     }
 932
 933   draw_status(context);
 934 }
 935
 936 void
 937 WorldMap::draw_status(DrawingContext& context)
 938 {
 939   context.push_transform();
 940   context.set_translation(Vector(0, 0));
 941
 942   player_status->draw(context);
 943
 944   if (!tux->is_moving())
 945     {
 946       for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 947         {
 948           if (i->pos == tux->get_tile_pos())
 949             {
 950               if(i->title == "")
 951                 get_level_title(*i);
 952
 953               context.draw_text(white_text, i->title,
 954                   Vector(SCREEN_WIDTH/2,
 955                          SCREEN_HEIGHT - white_text->get_height() - 30),
 956                   CENTER_ALLIGN, LAYER_FOREGROUND1);
 957
 958               i->statistics.draw_worldmap_info(context);
 959               break;
 960             }
 961         }
 962       for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
 963         {
 964           if (i->pos == tux->get_tile_pos())
 965             {
 966                /* Display an in-map message in the map, if any as been selected */
 967               if(!i->map_message.empty() && !i->passive_message)
 968                 context.draw_text(gold_text, i->map_message,
 969                     Vector(SCREEN_WIDTH/2,
 970                            SCREEN_HEIGHT - white_text->get_height() - 60),
 971                     CENTER_ALLIGN, LAYER_FOREGROUND1);
 972               break;
 973             }
 974         }
 975     }
 976   /* Display a passive message in the map, if needed */
 977   if(passive_message_timer.started())
 978     context.draw_text(gold_text, passive_message,
 979             Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT - white_text->get_height() - 60),
 980             CENTER_ALLIGN, LAYER_FOREGROUND1);
 981
 982   context.pop_transform();
 983 }
 984
 985 void
 986 WorldMap::display()
 987 {
 988   Menu::set_current(0);
 989
 990   quit = false;
 991
 992   sound_manager->play_music(std::string("music/") + music);
 993
 994   if(!intro_displayed && intro_script != "") {
 995     try {
 996       std::auto_ptr<ScriptInterpreter> interpreter
 997         (new ScriptInterpreter(levels_path));
 998       std::istringstream in(intro_script);
 999       interpreter->run_script(in, "worldmap-intro-script");
1000       add_object(interpreter.release());
1001     } catch(std::exception& e) {
1002       std::cerr << "Couldn't execute worldmap-intro-script: "
1003         << e.what() << "\n";
1004     }
1005
1006     intro_displayed = true;
1007   }
1008
1009   Uint32 lastticks = SDL_GetTicks();
1010   DrawingContext context;
1011   while(!quit) {
1012     Uint32 ticks = SDL_GetTicks();
1013     float elapsed_time = float(ticks - lastticks) / 1000;
1014     game_time += elapsed_time;
1015     lastticks = ticks;
1016
1017     // 40 fps minimum // TODO use same code as in GameSession here
1018     if(elapsed_time > .025)
1019       elapsed_time = .025;
1020
1021     Vector tux_pos = tux->get_pos();
1022     offset.x = tux_pos.x - SCREEN_WIDTH/2;
1023     offset.y = tux_pos.y - SCREEN_HEIGHT/2;
1024
1025     if (offset.x < 0)
1026       offset.x = 0;
1027     if (offset.y < 0)
1028       offset.y = 0;
1029
1030     if (offset.x > solids->get_width()*32 - SCREEN_WIDTH)
1031       offset.x = solids->get_width()*32 - SCREEN_WIDTH;
1032     if (offset.y > solids->get_height()*32 - SCREEN_HEIGHT)
1033       offset.y = solids->get_height()*32 - SCREEN_HEIGHT;
1034
1035     context.push_transform();
1036     context.set_translation(offset);
1037     draw(context);
1038     context.pop_transform();
1039     get_input();
1040     update(elapsed_time);
1041     sound_manager->update();
1042
1043     if(Menu::current()) {
1044       Menu::current()->draw(context);
1045     }
1046
1047     context.do_drawing();
1048   }
1049 }
1050
1051 void
1052 WorldMap::savegame(const std::string& filename)
1053 {
1054   if(filename == "")
1055     return;
1056
1057   lisp::Writer writer(filename);
1058
1059   int nb_solved_levels = 0, total_levels = 0;
1060   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i) {
1061     ++total_levels;
1062     if (i->solved)
1063       ++nb_solved_levels;
1064   }
1065   char nb_solved_levels_str[80], total_levels_str[80];
1066   sprintf(nb_solved_levels_str, "%d", nb_solved_levels);
1067   sprintf(total_levels_str, "%d", total_levels);
1068
1069   writer.write_comment("Worldmap save file");
1070
1071   writer.start_list("supertux-savegame");
1072
1073   writer.write_int("version", 1);
1074   writer.write_string("title",
1075       std::string(name + " - " + nb_solved_levels_str+"/"+total_levels_str));
1076   writer.write_string("map", map_filename);
1077   writer.write_bool("intro-displayed", intro_displayed);
1078
1079   writer.start_list("tux");
1080
1081   writer.write_float("x", tux->get_tile_pos().x);
1082   writer.write_float("y", tux->get_tile_pos().y);
1083   writer.write_string("back", direction_to_string(tux->back_direction));
1084   player_status->write(writer);
1085   writer.write_string("back", direction_to_string(tux->back_direction));
1086
1087   writer.end_list("tux");
1088
1089   writer.start_list("levels");
1090
1091   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1092     {
1093       if (i->solved)
1094         {
1095         writer.start_list("level");
1096
1097         writer.write_string("name", i->name);
1098         writer.write_bool("solved", true);
1099         i->statistics.write(writer);
1100
1101         writer.end_list("level");
1102         }
1103     }
1104
1105   writer.end_list("levels");
1106
1107   writer.end_list("supertux-savegame");
1108 }
1109
1110 void
1111 WorldMap::loadgame(const std::string& filename)
1112 {
1113   std::cout << "loadgame: " << filename << std::endl;
1114   savegame_file = filename;
1115
1116   try {
1117     lisp::Parser parser;
1118     std::auto_ptr<lisp::Lisp> root (parser.parse(filename));
1119
1120     const lisp::Lisp* savegame = root->get_lisp("supertux-savegame");
1121     if(!savegame)
1122       throw std::runtime_error("File is not a supertux-savegame file.");
1123
1124     /* Get the Map filename and then load it before setting level settings */
1125     std::string cur_map_filename = map_filename;
1126     savegame->get("map", map_filename);
1127     load_map();
1128
1129     savegame->get("intro-displayed", intro_displayed);
1130     savegame->get("lives", player_status->lives);
1131     savegame->get("coins", player_status->coins);
1132     savegame->get("max-score-multiplier", player_status->max_score_multiplier);
1133     if (player_status->lives < 0)
1134       player_status->reset();
1135
1136     const lisp::Lisp* tux_lisp = savegame->get_lisp("tux");
1137     if(tux)
1138     {
1139       Vector p;
1140       std::string back_str = "none";
1141
1142       tux_lisp->get("x", p.x);
1143       tux_lisp->get("y", p.y);
1144       tux_lisp->get("back", back_str);
1145       player_status->read(*tux_lisp);
1146
1147       tux->back_direction = string_to_direction(back_str);
1148       tux->set_tile_pos(p);
1149     }
1150
1151     const lisp::Lisp* levels_lisp = savegame->get_lisp("levels");
1152     if(levels_lisp) {
1153       lisp::ListIterator iter(levels_lisp);
1154       while(iter.next()) {
1155         if(iter.item() == "level") {
1156           std::string name;
1157           bool solved = false;
1158
1159           const lisp::Lisp* level = iter.lisp();
1160           level->get("name", name);
1161           level->get("solved", solved);
1162
1163           for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1164           {
1165             if (name == i->name)
1166             {
1167               i->solved = solved;
1168               i->sprite->set_action(solved ? "solved" : "default");
1169               i->statistics.parse(*level);
1170               break;
1171             }
1172           }
1173         } else {
1174           std::cerr << "Unknown token '" << iter.item()
1175                     << "' in levels block in worldmap.\n";
1176         }
1177       }
1178     }
1179   } catch(std::exception& e) {
1180     std::cerr << "Problem loading game '" << filename << "': " << e.what()
1181               << "\n";
1182     load_map();
1183     player_status->reset();
1184   }
1185
1186   calculate_total_stats();
1187 }
1188
1189 void
1190 WorldMap::loadmap(const std::string& filename)
1191 {
1192   savegame_file = "";
1193   map_filename = filename;
1194   load_map();
1195 }
1196
1197 } // namespace WorldMapNS