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 #include <physfs.h>
  29
  30 #include "gettext.hpp"
  31 #include "video/surface.hpp"
  32 #include "video/screen.hpp"
  33 #include "video/drawing_context.hpp"
  34 #include "sprite/sprite_manager.hpp"
  35 #include "audio/sound_manager.hpp"
  36 #include "lisp/parser.hpp"
  37 #include "lisp/lisp.hpp"
  38 #include "lisp/list_iterator.hpp"
  39 #include "lisp/writer.hpp"
  40 #include "game_session.hpp"
  41 #include "sector.hpp"
  42 #include "worldmap.hpp"
  43 #include "resources.hpp"
  44 #include "misc.hpp"
  45 #include "player_status.hpp"
  46 #include "textscroller.hpp"
  47 #include "main.hpp"
  48 #include "spawn_point.hpp"
  49 #include "file_system.hpp"
  50 #include "gui/menu.hpp"
  51 #include "gui/mousecursor.hpp"
  52 #include "control/joystickkeyboardcontroller.hpp"
  53 #include "object/background.hpp"
  54 #include "object/tilemap.hpp"
  55 #include "scripting/script_interpreter.hpp"
  56 #include "exceptions.hpp"
  57
  58 Menu* worldmap_menu  = 0;
  59
  60 static const float TUXSPEED = 200;
  61 static const float map_message_TIME = 2.8;
  62
  63 namespace WorldMapNS {
  64
  65 Direction reverse_dir(Direction direction)
  66 {
  67   switch(direction)
  68     {
  69     case D_WEST:
  70       return D_EAST;
  71     case D_EAST:
  72       return D_WEST;
  73     case D_NORTH:
  74       return D_SOUTH;
  75     case D_SOUTH:
  76       return D_NORTH;
  77     case D_NONE:
  78       return D_NONE;
  79     }
  80   return D_NONE;
  81 }
  82
  83 std::string
  84 direction_to_string(Direction direction)
  85 {
  86   switch(direction)
  87     {
  88     case D_WEST:
  89       return "west";
  90     case D_EAST:
  91       return "east";
  92     case D_NORTH:
  93       return "north";
  94     case D_SOUTH:
  95       return "south";
  96     default:
  97       return "none";
  98     }
  99 }
 100
 101 Direction
 102 string_to_direction(const std::string& directory)
 103 {
 104   if (directory == "west")
 105     return D_WEST;
 106   else if (directory == "east")
 107     return D_EAST;
 108   else if (directory == "north")
 109     return D_NORTH;
 110   else if (directory == "south")
 111     return D_SOUTH;
 112   else
 113     return D_NONE;
 114 }
 115
 116 //---------------------------------------------------------------------------
 117
 118 Tux::Tux(WorldMap* worldmap_)
 119   : worldmap(worldmap_)
 120 {
 121   tux_sprite = sprite_manager->create("worldmaptux");
 122
 123   offset = 0;
 124   moving = false;
 125   direction = D_NONE;
 126   input_direction = D_NONE;
 127 }
 128
 129 Tux::~Tux()
 130 {
 131   delete tux_sprite;
 132 }
 133
 134 void
 135 Tux::draw(DrawingContext& context)
 136 {
 137   switch (player_status->bonus) {
 138     case GROWUP_BONUS:
 139       tux_sprite->set_action("large");
 140       break;
 141     case FIRE_BONUS:
 142       tux_sprite->set_action("fire");
 143       break;
 144     case NO_BONUS:
 145       tux_sprite->set_action("small");
 146       break;
 147     default:
 148 #ifdef DEBUG
 149       std::cerr << "Bonus type not handled in worldmap.\n";
 150 #endif
 151       tux_sprite->set_action("large");
 152       break;
 153   }
 154
 155   tux_sprite->draw(context, get_pos(), LAYER_OBJECTS);
 156 }
 157
 158
 159 Vector
 160 Tux::get_pos()
 161 {
 162   float x = tile_pos.x * 32;
 163   float y = tile_pos.y * 32;
 164
 165   switch(direction)
 166     {
 167     case D_WEST:
 168       x -= offset - 32;
 169       break;
 170     case D_EAST:
 171       x += offset - 32;
 172       break;
 173     case D_NORTH:
 174       y -= offset - 32;
 175       break;
 176     case D_SOUTH:
 177       y += offset - 32;
 178       break;
 179     case D_NONE:
 180       break;
 181     }
 182
 183   return Vector(x, y);
 184 }
 185
 186 void
 187 Tux::stop()
 188 {
 189   offset = 0;
 190   direction = D_NONE;
 191   input_direction = D_NONE;
 192   moving = false;
 193 }
 194
 195 void
 196 Tux::set_direction(Direction dir)
 197 {
 198   input_direction = dir;
 199 }
 200
 201 void
 202 Tux::update(float delta)
 203 {
 204   // check controller
 205   if(main_controller->pressed(Controller::UP))
 206     input_direction = D_NORTH;
 207   else if(main_controller->pressed(Controller::DOWN))
 208     input_direction = D_SOUTH;
 209   else if(main_controller->pressed(Controller::LEFT))
 210     input_direction = D_WEST;
 211   else if(main_controller->pressed(Controller::RIGHT))
 212     input_direction = D_EAST;
 213
 214   if(!moving)
 215     {
 216       if (input_direction != D_NONE)
 217         {
 218           WorldMap::Level* level = worldmap->at_level();
 219
 220           // We got a new direction, so lets start walking when possible
 221           Vector next_tile;
 222           if ((!level || level->solved)
 223               && worldmap->path_ok(input_direction, tile_pos, &next_tile))
 224             {
 225               tile_pos = next_tile;
 226               moving = true;
 227               direction = input_direction;
 228               back_direction = reverse_dir(direction);
 229             }
 230           else if (input_direction == back_direction)
 231             {
 232               moving = true;
 233               direction = input_direction;
 234               tile_pos = worldmap->get_next_tile(tile_pos, direction);
 235               back_direction = reverse_dir(direction);
 236             }
 237         }
 238     }
 239   else
 240     {
 241       // Let tux walk
 242       offset += TUXSPEED * delta;
 243
 244       if (offset > 32)
 245         { // We reached the next tile, so we check what to do now
 246           offset -= 32;
 247
 248           WorldMap::SpecialTile* special_tile = worldmap->at_special_tile();
 249           if(special_tile && special_tile->passive_message)
 250             {  // direction and the apply_action_ are opposites, since they "see"
 251                // directions in a different way
 252             if((direction == D_NORTH && special_tile->apply_action_south) ||
 253                (direction == D_SOUTH && special_tile->apply_action_north) ||
 254                (direction == D_WEST && special_tile->apply_action_east) ||
 255                (direction == D_EAST && special_tile->apply_action_west))
 256               {
 257               worldmap->passive_message = special_tile->map_message;
 258               worldmap->passive_message_timer.start(map_message_TIME);
 259               }
 260             }
 261
 262           if (worldmap->at(tile_pos)->getData() & Tile::WORLDMAP_STOP ||
 263              (special_tile && !special_tile->passive_message) ||
 264               worldmap->at_level())
 265             {
 266               if(special_tile && !special_tile->map_message.empty() &&
 267                 !special_tile->passive_message)
 268                 worldmap->passive_message_timer.start(0);
 269               stop();
 270             }
 271           else
 272             {
 273               const Tile* tile = worldmap->at(tile_pos);
 274               if (direction != input_direction)
 275                 {
 276                   // Turn to a new direction
 277                   const Tile* tile = worldmap->at(tile_pos);
 278
 279                   if((tile->getData() & Tile::WORLDMAP_NORTH
 280                       && input_direction == D_NORTH) ||
 281                      (tile->getData() & Tile::WORLDMAP_SOUTH
 282                       && input_direction == D_SOUTH) ||
 283                      (tile->getData() & Tile::WORLDMAP_EAST
 284                       && input_direction == D_EAST) ||
 285                      (tile->getData() & Tile::WORLDMAP_WEST
 286                       && input_direction == D_WEST))
 287                     {  // player has changed direction during auto-movement
 288                       direction = input_direction;
 289                       back_direction = reverse_dir(direction);
 290                     }
 291                   else
 292                     {  // player has changed to impossible tile
 293                       back_direction = reverse_dir(direction);
 294                       stop();
 295                     }
 296                 }
 297               else
 298                 {
 299                 Direction dir = D_NONE;
 300
 301                 if (tile->getData() & Tile::WORLDMAP_NORTH
 302                     && back_direction != D_NORTH)
 303                   dir = D_NORTH;
 304                 else if (tile->getData() & Tile::WORLDMAP_SOUTH
 305                     && back_direction != D_SOUTH)
 306                   dir = D_SOUTH;
 307                 else if (tile->getData() & Tile::WORLDMAP_EAST
 308                     && back_direction != D_EAST)
 309                   dir = D_EAST;
 310                 else if (tile->getData() & Tile::WORLDMAP_WEST
 311                     && back_direction != D_WEST)
 312                   dir = D_WEST;
 313
 314                 if (dir != D_NONE)
 315                   {
 316                   direction = dir;
 317                   input_direction = direction;
 318                   back_direction = reverse_dir(direction);
 319                   }
 320                 else
 321                   {
 322                   // Should never be reached if tiledata is good
 323                   stop();
 324                   return;
 325                   }
 326                 }
 327
 328               // Walk automatically to the next tile
 329               if(direction != D_NONE)
 330                 {
 331                 Vector next_tile;
 332                 if (worldmap->path_ok(direction, tile_pos, &next_tile))
 333                   {
 334                   tile_pos = next_tile;
 335                   }
 336                 else
 337                   {
 338                   puts("Tilemap data is buggy");
 339                   stop();
 340                   }
 341                 }
 342             }
 343         }
 344     }
 345 }
 346
 347 //---------------------------------------------------------------------------
 348
 349 WorldMap::WorldMap()
 350   : tux(0), solids(0)
 351 {
 352   tile_manager = new TileManager("images/worldmap.strf");
 353
 354   tux = new Tux(this);
 355   add_object(tux);
 356
 357   messagedot = new Surface("images/worldmap/common/messagedot.png");
 358   teleporterdot = new Surface("images/worldmap/common/teleporterdot.png");
 359
 360   name = "<no title>";
 361   music = "salcon.ogg";
 362   intro_displayed = false;
 363
 364   total_stats.reset();
 365 }
 366
 367 WorldMap::~WorldMap()
 368 {
 369   clear_objects();
 370   for(SpawnPoints::iterator i = spawn_points.begin();
 371       i != spawn_points.end(); ++i) {
 372     delete *i;
 373   }
 374   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i) {
 375     Level& level = *i;
 376     delete level.sprite;
 377   }
 378
 379   delete tile_manager;
 380
 381   delete messagedot;
 382   delete teleporterdot;
 383 }
 384
 385 void
 386 WorldMap::add_object(GameObject* object)
 387 {
 388   TileMap* tilemap = dynamic_cast<TileMap*> (object);
 389   if(tilemap != 0 && tilemap->is_solid()) {
 390     solids = tilemap;
 391   }
 392
 393   game_objects.push_back(object);
 394 }
 395
 396 void
 397 WorldMap::clear_objects()
 398 {
 399   for(GameObjects::iterator i = game_objects.begin();
 400       i != game_objects.end(); ++i)
 401     delete *i;
 402   game_objects.clear();
 403   solids = 0;
 404   tux = new Tux(this);
 405   add_object(tux);
 406 }
 407
 408 // Don't forget to set map_filename before calling this
 409 void
 410 WorldMap::load_map()
 411 {
 412   levels_path = FileSystem::dirname(map_filename);
 413
 414   try {
 415     lisp::Parser parser;
 416     std::auto_ptr<lisp::Lisp> root (parser.parse(map_filename));
 417
 418     const lisp::Lisp* lisp = root->get_lisp("supertux-worldmap");
 419     if(!lisp)
 420       throw std::runtime_error("file isn't a supertux-worldmap file.");
 421
 422     clear_objects();
 423     lisp::ListIterator iter(lisp);
 424     while(iter.next()) {
 425       if(iter.item() == "tilemap") {
 426         add_object(new TileMap(*(iter.lisp()), tile_manager));
 427       } else if(iter.item() == "background") {
 428         add_object(new Background(*(iter.lisp())));
 429       } else if(iter.item() == "properties") {
 430         const lisp::Lisp* props = iter.lisp();
 431         props->get("name", name);
 432         props->get("music", music);
 433       } else if(iter.item() == "intro-script") {
 434         iter.value()->get(intro_script);
 435       } else if(iter.item() == "spawnpoint") {
 436         SpawnPoint* sp = new SpawnPoint(iter.lisp());
 437         spawn_points.push_back(sp);
 438       } else if(iter.item() == "level") {
 439         parse_level_tile(iter.lisp());
 440       } else if(iter.item() == "special-tile") {
 441         parse_special_tile(iter.lisp());
 442       } else {
 443         std::cerr << "Unknown token '" << iter.item() << "' in worldmap.\n";
 444       }
 445     }
 446     if(solids == 0)
 447       throw std::runtime_error("No solid tilemap specified");
 448
 449     // search for main spawnpoint
 450     for(SpawnPoints::iterator i = spawn_points.begin();
 451         i != spawn_points.end(); ++i) {
 452       SpawnPoint* sp = *i;
 453       if(sp->name == "main") {
 454         Vector p = sp->pos;
 455         tux->set_tile_pos(p);
 456         break;
 457       }
 458     }
 459
 460   } catch(std::exception& e) {
 461     std::stringstream msg;
 462     msg << "Problem when parsing worldmap '" << map_filename << "': " <<
 463       e.what();
 464     throw std::runtime_error(msg.str());
 465   }
 466 }
 467
 468 void
 469 WorldMap::parse_special_tile(const lisp::Lisp* lisp)
 470 {
 471   SpecialTile special_tile;
 472
 473   lisp->get("x", special_tile.pos.x);
 474   lisp->get("y", special_tile.pos.y);
 475   lisp->get("map-message", special_tile.map_message);
 476   special_tile.passive_message = false;
 477   lisp->get("passive-message", special_tile.passive_message);
 478   special_tile.teleport_dest = Vector(-1,-1);
 479   lisp->get("teleport-to-x", special_tile.teleport_dest.x);
 480   lisp->get("teleport-to-y", special_tile.teleport_dest.y);
 481   special_tile.invisible = false;
 482   lisp->get("invisible-tile", special_tile.invisible);
 483
 484   special_tile.apply_action_north = true;
 485   special_tile.apply_action_south = true;
 486   special_tile.apply_action_east = true;
 487   special_tile.apply_action_west = true;
 488
 489   std::string apply_direction;
 490   lisp->get("apply-to-direction", apply_direction);
 491   if(!apply_direction.empty()) {
 492     special_tile.apply_action_north = false;
 493     special_tile.apply_action_south = false;
 494     special_tile.apply_action_east = false;
 495     special_tile.apply_action_west = false;
 496     if(apply_direction.find("north") != std::string::npos)
 497       special_tile.apply_action_north = true;
 498     if(apply_direction.find("south") != std::string::npos)
 499       special_tile.apply_action_south = true;
 500     if(apply_direction.find("east") != std::string::npos)
 501       special_tile.apply_action_east = true;
 502     if(apply_direction.find("west") != std::string::npos)
 503       special_tile.apply_action_west = true;
 504   }
 505
 506   special_tiles.push_back(special_tile);
 507 }
 508
 509 void
 510 WorldMap::parse_level_tile(const lisp::Lisp* level_lisp)
 511 {
 512   Level level;
 513
 514   level.solved = false;
 515
 516   level.north = true;
 517   level.east  = true;
 518   level.south = true;
 519   level.west  = true;
 520
 521   std::string sprite = "images/worldmap/common/leveldot.sprite";
 522   level_lisp->get("sprite", sprite);
 523   level.sprite = sprite_manager->create(sprite);
 524
 525   level_lisp->get("extro-script", level.extro_script);
 526   level_lisp->get("next-worldmap", level.next_worldmap);
 527
 528   level.quit_worldmap = false;
 529   level_lisp->get("quit-worldmap", level.quit_worldmap);
 530
 531   level_lisp->get("name", level.name);
 532   level_lisp->get("x", level.pos.x);
 533   level_lisp->get("y", level.pos.y);
 534
 535   level.auto_path = true;
 536   level_lisp->get("auto-path", level.auto_path);
 537
 538   level.vertical_flip = false;
 539   level_lisp->get("vertical-flip", level.vertical_flip);
 540
 541   levels.push_back(level);
 542 }
 543
 544 void
 545 WorldMap::get_level_title(Level& level)
 546 {
 547   /** get special_tile's title */
 548   level.title = "<no title>";
 549
 550   try {
 551     lisp::Parser parser;
 552     std::auto_ptr<lisp::Lisp> root (parser.parse(levels_path + level.name));
 553
 554     const lisp::Lisp* level_lisp = root->get_lisp("supertux-level");
 555     if(!level_lisp)
 556       return;
 557
 558     level_lisp->get("name", level.title);
 559   } catch(std::exception& e) {
 560     std::cerr << "Problem when reading leveltitle: " << e.what() << "\n";
 561     return;
 562   }
 563 }
 564
 565 void WorldMap::calculate_total_stats()
 566 {
 567   total_stats.reset();
 568   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 569     {
 570     if (i->solved)
 571       {
 572       total_stats += i->statistics;
 573       }
 574     }
 575 }
 576
 577 void
 578 WorldMap::on_escape_press()
 579 {
 580   // Show or hide the menu
 581   if(!Menu::current()) {
 582     Menu::set_current(worldmap_menu);
 583     tux->set_direction(D_NONE);  // stop tux movement when menu is called
 584   } else {
 585     Menu::set_current(0);
 586   }
 587 }
 588
 589 void
 590 WorldMap::get_input()
 591 {
 592   main_controller->update();
 593
 594   SDL_Event event;
 595   while (SDL_PollEvent(&event)) {
 596     if (Menu::current())
 597       Menu::current()->event(event);
 598     main_controller->process_event(event);
 599     if(event.type == SDL_QUIT)
 600       throw graceful_shutdown();
 601   }
 602 }
 603
 604 Vector
 605 WorldMap::get_next_tile(Vector pos, Direction direction)
 606 {
 607   switch(direction) {
 608     case D_WEST:
 609       pos.x -= 1;
 610       break;
 611     case D_EAST:
 612       pos.x += 1;
 613       break;
 614     case D_NORTH:
 615       pos.y -= 1;
 616       break;
 617     case D_SOUTH:
 618       pos.y += 1;
 619       break;
 620     case D_NONE:
 621       break;
 622   }
 623   return pos;
 624 }
 625
 626 bool
 627 WorldMap::path_ok(Direction direction, Vector old_pos, Vector* new_pos)
 628 {
 629   *new_pos = get_next_tile(old_pos, direction);
 630
 631   if (!(new_pos->x >= 0 && new_pos->x < solids->get_width()
 632         && new_pos->y >= 0 && new_pos->y < solids->get_height()))
 633     { // New position is outsite the tilemap
 634       return false;
 635     }
 636   else
 637     { // Check if the tile allows us to go to new_pos
 638       switch(direction)
 639         {
 640         case D_WEST:
 641           return (at(old_pos)->getData() & Tile::WORLDMAP_WEST
 642               && at(*new_pos)->getData() & Tile::WORLDMAP_EAST);
 643
 644         case D_EAST:
 645           return (at(old_pos)->getData() & Tile::WORLDMAP_EAST
 646               && at(*new_pos)->getData() & Tile::WORLDMAP_WEST);
 647
 648         case D_NORTH:
 649           return (at(old_pos)->getData() & Tile::WORLDMAP_NORTH
 650               && at(*new_pos)->getData() & Tile::WORLDMAP_SOUTH);
 651
 652         case D_SOUTH:
 653           return (at(old_pos)->getData() & Tile::WORLDMAP_SOUTH
 654               && at(*new_pos)->getData() & Tile::WORLDMAP_NORTH);
 655
 656         case D_NONE:
 657           assert(!"path_ok() can't work if direction is NONE");
 658         }
 659       return false;
 660     }
 661 }
 662
 663 void
 664 WorldMap::update(float delta)
 665 {
 666   Menu* menu = Menu::current();
 667   if(menu) {
 668     menu->update();
 669
 670     if(menu == worldmap_menu) {
 671       switch (worldmap_menu->check())
 672       {
 673         case MNID_RETURNWORLDMAP: // Return to game
 674           Menu::set_current(0);
 675           break;
 676         case MNID_QUITWORLDMAP: // Quit Worldmap
 677           quit = true;
 678           break;
 679       }
 680     } else if(menu == options_menu) {
 681       process_options_menu();
 682     }
 683
 684     return;
 685   }
 686
 687   // update GameObjects
 688   for(GameObjects::iterator i = game_objects.begin();
 689       i != game_objects.end(); ++i) {
 690     GameObject* object = *i;
 691     object->update(delta);
 692   }
 693   // remove old GameObjects
 694   for(GameObjects::iterator i = game_objects.begin();
 695       i != game_objects.end(); ) {
 696     GameObject* object = *i;
 697     if(!object->is_valid()) {
 698       delete object;
 699       i = game_objects.erase(i);
 700     } else {
 701       ++i;
 702     }
 703   }
 704
 705   bool enter_level = false;
 706   if(main_controller->pressed(Controller::ACTION)
 707       || main_controller->pressed(Controller::JUMP)
 708       || main_controller->pressed(Controller::MENU_SELECT))
 709     enter_level = true;
 710   if(main_controller->pressed(Controller::PAUSE_MENU))
 711     on_escape_press();
 712
 713   if (enter_level && !tux->is_moving())
 714     {
 715       /* Check special tile action */
 716       SpecialTile* special_tile = at_special_tile();
 717       if(special_tile)
 718         {
 719         if (special_tile->teleport_dest != Vector(-1,-1))
 720           {
 721           // TODO: an animation, camera scrolling or a fading would be a nice touch
 722           sound_manager->play("sounds/warp.wav");
 723           tux->back_direction = D_NONE;
 724           tux->set_tile_pos(special_tile->teleport_dest);
 725           SDL_Delay(1000);
 726           }
 727         }
 728
 729       /* Check level action */
 730       bool level_finished = true;
 731       Level* level = at_level();
 732       if (!level)
 733         {
 734         std::cout << "No level to enter at: "
 735           << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y
 736           << std::endl;
 737         return;
 738         }
 739
 740
 741       if (level->pos == tux->get_tile_pos())
 742         {
 743           sound_manager->stop_music();
 744           PlayerStatus old_player_status;
 745           old_player_status = *player_status;
 746
 747           // do a shriking fade to the level
 748           shrink_fade(Vector((level->pos.x*32 + 16 + offset.x),
 749                              (level->pos.y*32 + 16 + offset.y)), 500);
 750           GameSession session(levels_path + level->name,
 751                               ST_GL_LOAD_LEVEL_FILE, &level->statistics);
 752
 753           switch (session.run())
 754             {
 755             case GameSession::ES_LEVEL_FINISHED:
 756               {
 757                 level_finished = true;
 758                 bool old_level_state = level->solved;
 759                 level->solved = true;
 760                 level->sprite->set_action("solved");
 761
 762                 // deal with statistics
 763                 level->statistics.merge(global_stats);
 764                 calculate_total_stats();
 765
 766                 if (old_level_state != level->solved && level->auto_path)
 767                   { // Try to detect the next direction to which we should walk
 768                     // FIXME: Mostly a hack
 769                     Direction dir = D_NONE;
 770
 771                     const Tile* tile = at(tux->get_tile_pos());
 772
 773                     if (tile->getData() & Tile::WORLDMAP_NORTH
 774                         && tux->back_direction != D_NORTH)
 775                       dir = D_NORTH;
 776                     else if (tile->getData() & Tile::WORLDMAP_SOUTH
 777                         && tux->back_direction != D_SOUTH)
 778                       dir = D_SOUTH;
 779                     else if (tile->getData() & Tile::WORLDMAP_EAST
 780                         && tux->back_direction != D_EAST)
 781                       dir = D_EAST;
 782                     else if (tile->getData() & Tile::WORLDMAP_WEST
 783                         && tux->back_direction != D_WEST)
 784                       dir = D_WEST;
 785
 786                     if (dir != D_NONE)
 787                       {
 788                         tux->set_direction(dir);
 789                       }
 790                   }
 791               }
 792
 793               break;
 794             case GameSession::ES_LEVEL_ABORT:
 795               level_finished = false;
 796               /* In case the player's abort the level, keep it using the old
 797                   status. But the minimum lives and no bonus. */
 798               player_status->coins = old_player_status.coins;
 799               player_status->lives = std::min(old_player_status.lives, player_status->lives);
 800               player_status->bonus = NO_BONUS;
 801
 802               break;
 803             case GameSession::ES_GAME_OVER:
 804               {
 805               level_finished = false;
 806               /* draw an end screen */
 807               /* TODO: in the future, this should make a dialog a la SuperMario, asking
 808               if the player wants to restart the world map with no score and from
 809               level 1 */
 810               char str[80];
 811
 812               DrawingContext context;
 813               context.draw_gradient(Color (200,240,220), Color(200,200,220),
 814                   LAYER_BACKGROUND0);
 815
 816               context.draw_text(blue_text, _("GAMEOVER"),
 817                   Vector(SCREEN_WIDTH/2, 200), CENTER_ALLIGN, LAYER_FOREGROUND1);
 818
 819               sprintf(str, _("COINS: %d"), player_status->coins);
 820               context.draw_text(gold_text, str,
 821                   Vector(SCREEN_WIDTH/2, SCREEN_WIDTH - 32), CENTER_ALLIGN,
 822                   LAYER_FOREGROUND1);
 823
 824               total_stats.draw_message_info(context, _("Total Statistics"));
 825
 826               context.do_drawing();
 827
 828               wait_for_event(2.0, 6.0);
 829
 830               quit = true;
 831               player_status->reset();
 832               break;
 833               }
 834             case GameSession::ES_NONE:
 835               assert(false);
 836               // Should never be reached
 837               break;
 838             }
 839
 840           sound_manager->play_music(std::string("music/") + music);
 841           Menu::set_current(0);
 842           if (!savegame_file.empty())
 843             savegame(savegame_file);
 844         }
 845       /* The porpose of the next checking is that if the player lost
 846          the level (in case there is one), don't show anything */
 847       if(level_finished) {
 848         if (level->extro_script != "") {
 849           try {
 850             std::auto_ptr<ScriptInterpreter> interpreter
 851               (new ScriptInterpreter(levels_path));
 852             std::istringstream in(level->extro_script);
 853             interpreter->run_script(in, "level-extro-script");
 854             add_object(interpreter.release());
 855           } catch(std::exception& e) {
 856             std::cerr << "Couldn't run level-extro-script:" << e.what() << "\n";
 857           }
 858         }
 859
 860         if (!level->next_worldmap.empty())
 861           {
 862           // Load given worldmap
 863           loadmap(level->next_worldmap);
 864           }
 865         if (level->quit_worldmap)
 866           quit = true;
 867         }
 868     }
 869   else
 870     {
 871 //      tux->set_direction(input_direction);
 872     }
 873 }
 874
 875 const Tile*
 876 WorldMap::at(Vector p)
 877 {
 878   return solids->get_tile((int) p.x, (int) p.y);
 879 }
 880
 881 WorldMap::Level*
 882 WorldMap::at_level()
 883 {
 884   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 885     {
 886       if (i->pos == tux->get_tile_pos())
 887         return &*i;
 888     }
 889
 890   return 0;
 891 }
 892
 893 WorldMap::SpecialTile*
 894 WorldMap::at_special_tile()
 895 {
 896   for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
 897     {
 898       if (i->pos == tux->get_tile_pos())
 899         return &*i;
 900     }
 901
 902   return 0;
 903 }
 904
 905 void
 906 WorldMap::draw(DrawingContext& context)
 907 {
 908   for(GameObjects::iterator i = game_objects.begin();
 909       i != game_objects.end(); ++i) {
 910     GameObject* object = *i;
 911     object->draw(context);
 912   }
 913
 914   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 915     {
 916       const Level& level = *i;
 917       level.sprite->draw(context, level.pos*32 + Vector(16, 16), LAYER_TILES+1);
 918     }
 919
 920   for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
 921     {
 922       if(i->invisible)
 923         continue;
 924
 925       if (i->teleport_dest != Vector(-1, -1))
 926         context.draw_surface(teleporterdot,
 927                 Vector(i->pos.x*32, i->pos.y*32), LAYER_TILES+1);
 928
 929       else if (!i->map_message.empty() && !i->passive_message)
 930         context.draw_surface(messagedot,
 931                 Vector(i->pos.x*32, i->pos.y*32), LAYER_TILES+1);
 932     }
 933
 934   draw_status(context);
 935 }
 936
 937 void
 938 WorldMap::draw_status(DrawingContext& context)
 939 {
 940   context.push_transform();
 941   context.set_translation(Vector(0, 0));
 942
 943   player_status->draw(context);
 944
 945   if (!tux->is_moving())
 946     {
 947       for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 948         {
 949           if (i->pos == tux->get_tile_pos())
 950             {
 951               if(i->title == "")
 952                 get_level_title(*i);
 953
 954               context.draw_text(white_text, i->title,
 955                   Vector(SCREEN_WIDTH/2,
 956                          SCREEN_HEIGHT - white_text->get_height() - 30),
 957                   CENTER_ALLIGN, LAYER_FOREGROUND1);
 958
 959               i->statistics.draw_worldmap_info(context);
 960               break;
 961             }
 962         }
 963       for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
 964         {
 965           if (i->pos == tux->get_tile_pos())
 966             {
 967                /* Display an in-map message in the map, if any as been selected */
 968               if(!i->map_message.empty() && !i->passive_message)
 969                 context.draw_text(gold_text, i->map_message,
 970                     Vector(SCREEN_WIDTH/2,
 971                            SCREEN_HEIGHT - white_text->get_height() - 60),
 972                     CENTER_ALLIGN, LAYER_FOREGROUND1);
 973               break;
 974             }
 975         }
 976     }
 977   /* Display a passive message in the map, if needed */
 978   if(passive_message_timer.started())
 979     context.draw_text(gold_text, passive_message,
 980             Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT - white_text->get_height() - 60),
 981             CENTER_ALLIGN, LAYER_FOREGROUND1);
 982
 983   context.pop_transform();
 984 }
 985
 986 void
 987 WorldMap::display()
 988 {
 989   Menu::set_current(0);
 990
 991   quit = false;
 992
 993   sound_manager->play_music(std::string("music/") + music);
 994
 995   if(!intro_displayed && intro_script != "") {
 996     try {
 997       std::auto_ptr<ScriptInterpreter> interpreter
 998         (new ScriptInterpreter(levels_path));
 999       std::istringstream in(intro_script);
1000       interpreter->run_script(in, "worldmap-intro-script");
1001       add_object(interpreter.release());
1002     } catch(std::exception& e) {
1003       std::cerr << "Couldn't execute worldmap-intro-script: "
1004         << e.what() << "\n";
1005     }
1006
1007     intro_displayed = true;
1008   }
1009
1010   Uint32 lastticks = SDL_GetTicks();
1011   DrawingContext context;
1012   while(!quit) {
1013     Uint32 ticks = SDL_GetTicks();
1014     float elapsed_time = float(ticks - lastticks) / 1000;
1015     game_time += elapsed_time;
1016     lastticks = ticks;
1017
1018     // 40 fps minimum // TODO use same code as in GameSession here
1019     if(elapsed_time > .025)
1020       elapsed_time = .025;
1021
1022     Vector tux_pos = tux->get_pos();
1023     offset.x = tux_pos.x - SCREEN_WIDTH/2;
1024     offset.y = tux_pos.y - SCREEN_HEIGHT/2;
1025
1026     if (offset.x < 0)
1027       offset.x = 0;
1028     if (offset.y < 0)
1029       offset.y = 0;
1030
1031     if (offset.x > solids->get_width()*32 - SCREEN_WIDTH)
1032       offset.x = solids->get_width()*32 - SCREEN_WIDTH;
1033     if (offset.y > solids->get_height()*32 - SCREEN_HEIGHT)
1034       offset.y = solids->get_height()*32 - SCREEN_HEIGHT;
1035
1036     context.push_transform();
1037     context.set_translation(offset);
1038     draw(context);
1039     context.pop_transform();
1040     get_input();
1041     update(elapsed_time);
1042     sound_manager->update();
1043
1044     if(Menu::current()) {
1045       Menu::current()->draw(context);
1046     }
1047
1048     context.do_drawing();
1049   }
1050 }
1051
1052 void
1053 WorldMap::savegame(const std::string& filename)
1054 {
1055   if(filename == "")
1056     return;
1057
1058   std::string dir = FileSystem::dirname(filename);
1059   if(PHYSFS_exists(dir.c_str()) == 0 && PHYSFS_mkdir(dir.c_str()) == 0) {
1060     std::ostringstream msg;
1061     msg << "Couldn't create directory '" << dir << "' for savegame:"
1062         << PHYSFS_getLastError();
1063     throw std::runtime_error(msg.str());
1064   }
1065   if(!PHYSFS_isDirectory(dir.c_str())) {
1066     std::ostringstream msg;
1067     msg << "'" << dir << "' is not a directory.";
1068     throw std::runtime_error(msg.str());
1069   }
1070
1071   lisp::Writer writer(filename);
1072
1073   int nb_solved_levels = 0, total_levels = 0;
1074   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i) {
1075     ++total_levels;
1076     if (i->solved)
1077       ++nb_solved_levels;
1078   }
1079   char nb_solved_levels_str[80], total_levels_str[80];
1080   sprintf(nb_solved_levels_str, "%d", nb_solved_levels);
1081   sprintf(total_levels_str, "%d", total_levels);
1082
1083   writer.write_comment("Worldmap save file");
1084
1085   writer.start_list("supertux-savegame");
1086
1087   writer.write_int("version", 1);
1088   writer.write_string("title",
1089       std::string(name + " - " + nb_solved_levels_str+"/"+total_levels_str));
1090   writer.write_string("map", map_filename);
1091   writer.write_bool("intro-displayed", intro_displayed);
1092
1093   writer.start_list("tux");
1094
1095   writer.write_float("x", tux->get_tile_pos().x);
1096   writer.write_float("y", tux->get_tile_pos().y);
1097   writer.write_string("back", direction_to_string(tux->back_direction));
1098   player_status->write(writer);
1099   writer.write_string("back", direction_to_string(tux->back_direction));
1100
1101   writer.end_list("tux");
1102
1103   writer.start_list("levels");
1104
1105   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1106     {
1107       if (i->solved)
1108         {
1109         writer.start_list("level");
1110
1111         writer.write_string("name", i->name);
1112         writer.write_bool("solved", true);
1113         i->statistics.write(writer);
1114
1115         writer.end_list("level");
1116         }
1117     }
1118
1119   writer.end_list("levels");
1120
1121   writer.end_list("supertux-savegame");
1122 }
1123
1124 void
1125 WorldMap::loadgame(const std::string& filename)
1126 {
1127   std::cout << "loadgame: " << filename << std::endl;
1128   savegame_file = filename;
1129
1130   if (PHYSFS_exists(filename.c_str())) // savegame exists
1131   {
1132     try {
1133       lisp::Parser parser;
1134
1135       std::auto_ptr<lisp::Lisp> root (parser.parse(filename));
1136
1137       const lisp::Lisp* savegame = root->get_lisp("supertux-savegame");
1138       if(!savegame)
1139         throw std::runtime_error("File is not a supertux-savegame file.");
1140
1141       /* Get the Map filename and then load it before setting level settings */
1142       std::string cur_map_filename = map_filename;
1143       savegame->get("map", map_filename);
1144       load_map();
1145
1146       savegame->get("intro-displayed", intro_displayed);
1147       savegame->get("lives", player_status->lives);
1148       savegame->get("coins", player_status->coins);
1149       savegame->get("max-score-multiplier", player_status->max_score_multiplier);
1150       if (player_status->lives < 0)
1151       player_status->reset();
1152
1153       const lisp::Lisp* tux_lisp = savegame->get_lisp("tux");
1154       if(tux)
1155       {
1156         Vector p;
1157         std::string back_str = "none";
1158
1159         tux_lisp->get("x", p.x);
1160         tux_lisp->get("y", p.y);
1161         tux_lisp->get("back", back_str);
1162           player_status->read(*tux_lisp);
1163
1164         tux->back_direction = string_to_direction(back_str);
1165         tux->set_tile_pos(p);
1166       }
1167
1168       const lisp::Lisp* levels_lisp = savegame->get_lisp("levels");
1169       if(levels_lisp) {
1170         lisp::ListIterator iter(levels_lisp);
1171         while(iter.next()) {
1172           if(iter.item() == "level") {
1173             std::string name;
1174             bool solved = false;
1175
1176             const lisp::Lisp* level = iter.lisp();
1177             level->get("name", name);
1178             level->get("solved", solved);
1179
1180             for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1181             {
1182               if (name == i->name)
1183               {
1184                 i->solved = solved;
1185                 i->sprite->set_action(solved ? "solved" : "default");
1186                 i->statistics.parse(*level);
1187                 break;
1188               }
1189             }
1190           } else {
1191             std::cerr << "Unknown token '" << iter.item()
1192                       << "' in levels block in worldmap.\n";
1193           }
1194         }
1195       }
1196     } catch(std::exception& e) {
1197       std::cerr << "Problem loading game '" << filename << "': " << e.what()
1198                 << "\n";
1199       load_map();
1200       player_status->reset();
1201     }
1202   }
1203   else
1204   {
1205         load_map();
1206     player_status->reset();
1207   }
1208
1209   calculate_total_stats();
1210 }
1211
1212 void
1213 WorldMap::loadmap(const std::string& filename)
1214 {
1215   savegame_file = "";
1216   map_filename = filename;
1217   load_map();
1218 }
1219
1220 } // namespace WorldMapNS