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 "msg.hpp"
  32 #include "video/surface.hpp"
  33 #include "video/screen.hpp"
  34 #include "video/drawing_context.hpp"
  35 #include "sprite/sprite_manager.hpp"
  36 #include "audio/sound_manager.hpp"
  37 #include "lisp/parser.hpp"
  38 #include "lisp/lisp.hpp"
  39 #include "lisp/list_iterator.hpp"
  40 #include "lisp/writer.hpp"
  41 #include "game_session.hpp"
  42 #include "sector.hpp"
  43 #include "worldmap.hpp"
  44 #include "resources.hpp"
  45 #include "misc.hpp"
  46 #include "player_status.hpp"
  47 #include "textscroller.hpp"
  48 #include "main.hpp"
  49 #include "spawn_point.hpp"
  50 #include "file_system.hpp"
  51 #include "gui/menu.hpp"
  52 #include "gui/mousecursor.hpp"
  53 #include "control/joystickkeyboardcontroller.hpp"
  54 #include "object/background.hpp"
  55 #include "object/tilemap.hpp"
  56 #include "scripting/script_interpreter.hpp"
  57 #include "exceptions.hpp"
  58
  59 Menu* worldmap_menu  = 0;
  60
  61 static const float TUXSPEED = 200;
  62 static const float map_message_TIME = 2.8;
  63
  64 namespace WorldMapNS {
  65
  66 Direction reverse_dir(Direction direction)
  67 {
  68   switch(direction)
  69     {
  70     case D_WEST:
  71       return D_EAST;
  72     case D_EAST:
  73       return D_WEST;
  74     case D_NORTH:
  75       return D_SOUTH;
  76     case D_SOUTH:
  77       return D_NORTH;
  78     case D_NONE:
  79       return D_NONE;
  80     }
  81   return D_NONE;
  82 }
  83
  84 std::string
  85 direction_to_string(Direction direction)
  86 {
  87   switch(direction)
  88     {
  89     case D_WEST:
  90       return "west";
  91     case D_EAST:
  92       return "east";
  93     case D_NORTH:
  94       return "north";
  95     case D_SOUTH:
  96       return "south";
  97     default:
  98       return "none";
  99     }
 100 }
 101
 102 Direction
 103 string_to_direction(const std::string& directory)
 104 {
 105   if (directory == "west")
 106     return D_WEST;
 107   else if (directory == "east")
 108     return D_EAST;
 109   else if (directory == "north")
 110     return D_NORTH;
 111   else if (directory == "south")
 112     return D_SOUTH;
 113   else
 114     return D_NONE;
 115 }
 116
 117 //---------------------------------------------------------------------------
 118
 119 Tux::Tux(WorldMap* worldmap_)
 120   : worldmap(worldmap_)
 121 {
 122   tux_sprite = sprite_manager->create("images/worldmap/common/tux.sprite");
 123
 124   offset = 0;
 125   moving = false;
 126   direction = D_NONE;
 127   input_direction = D_NONE;
 128 }
 129
 130 Tux::~Tux()
 131 {
 132   delete tux_sprite;
 133 }
 134
 135 void
 136 Tux::draw(DrawingContext& context)
 137 {
 138   switch (player_status->bonus) {
 139     case GROWUP_BONUS:
 140       tux_sprite->set_action(moving ? "large-walking" : "large-stop");
 141       break;
 142     case FIRE_BONUS:
 143       tux_sprite->set_action(moving ? "fire-walking" : "fire-stop");
 144       break;
 145     case NO_BONUS:
 146       tux_sprite->set_action(moving ? "small-walking" : "small-stop");
 147       break;
 148     default:
 149       msg_debug("Bonus type not handled in worldmap.");
 150       tux_sprite->set_action("large-stop");
 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::tryStartWalking()
 202 {
 203   if (moving) return;
 204   if (input_direction == D_NONE) return;
 205
 206   WorldMap::Level* level = worldmap->at_level();
 207
 208   // We got a new direction, so lets start walking when possible
 209   Vector next_tile;
 210   if ((!level || level->solved) && worldmap->path_ok(input_direction, tile_pos, &next_tile))
 211   {
 212     tile_pos = next_tile;
 213     moving = true;
 214     direction = input_direction;
 215     back_direction = reverse_dir(direction);
 216   }
 217   else if (input_direction == back_direction)
 218   {
 219     moving = true;
 220     direction = input_direction;
 221     tile_pos = worldmap->get_next_tile(tile_pos, direction);
 222     back_direction = reverse_dir(direction);
 223   }
 224
 225 }
 226
 227 bool
 228 Tux::canWalk(const Tile* tile, Direction dir)
 229 {
 230   return ((tile->getData() & Tile::WORLDMAP_NORTH && dir == D_NORTH) ||
 231           (tile->getData() & Tile::WORLDMAP_SOUTH && dir == D_SOUTH) ||
 232           (tile->getData() & Tile::WORLDMAP_EAST && dir == D_EAST) ||
 233           (tile->getData() & Tile::WORLDMAP_WEST && dir == D_WEST));
 234 }
 235
 236 void
 237 Tux::tryContinueWalking(float elapsed_time)
 238 {
 239   if (!moving) return;
 240
 241   // Let tux walk
 242   offset += TUXSPEED * elapsed_time;
 243
 244   // Do nothing if we have not yet reached the next tile
 245   if (offset <= 32) return;
 246
 247   offset -= 32;
 248
 249   // if this is a special_tile with passive_message, display it
 250   WorldMap::SpecialTile* special_tile = worldmap->at_special_tile();
 251   if(special_tile && special_tile->passive_message)
 252   {
 253     // direction and the apply_action_ are opposites, since they "see"
 254     // directions in a different way
 255     if((direction == D_NORTH && special_tile->apply_action_south) ||
 256                     (direction == D_SOUTH && special_tile->apply_action_north) ||
 257                     (direction == D_WEST && special_tile->apply_action_east) ||
 258                     (direction == D_EAST && special_tile->apply_action_west))
 259     {
 260       worldmap->passive_message = special_tile->map_message;
 261       worldmap->passive_message_timer.start(map_message_TIME);
 262     }
 263   }
 264
 265   // stop if we reached a level, a WORLDMAP_STOP tile or a special tile without a passive_message
 266   if ((worldmap->at_level()) || (worldmap->at(tile_pos)->getData() & Tile::WORLDMAP_STOP) || (special_tile && !special_tile->passive_message))
 267   {
 268     if(special_tile && !special_tile->map_message.empty() && !special_tile->passive_message) worldmap->passive_message_timer.start(0);
 269     stop();
 270     return;
 271   }
 272
 273   // if user wants to change direction, try changing, else guess the direction in which to walk next
 274   const Tile* tile = worldmap->at(tile_pos);
 275   if (direction != input_direction)
 276   {
 277     if(canWalk(tile, input_direction))
 278     {
 279       direction = input_direction;
 280       back_direction = reverse_dir(direction);
 281     }
 282   }
 283   else
 284   {
 285     Direction dir = D_NONE;
 286     if (tile->getData() & Tile::WORLDMAP_NORTH && back_direction != D_NORTH) dir = D_NORTH;
 287     else if (tile->getData() & Tile::WORLDMAP_SOUTH && back_direction != D_SOUTH) dir = D_SOUTH;
 288     else if (tile->getData() & Tile::WORLDMAP_EAST && back_direction != D_EAST) dir = D_EAST;
 289     else if (tile->getData() & Tile::WORLDMAP_WEST && back_direction != D_WEST) dir = D_WEST;
 290
 291     if (dir == D_NONE)
 292     {
 293       // Should never be reached if tiledata is good
 294       msg_warning("Could not determine where to walk next");
 295       stop();
 296       return;
 297     }
 298
 299     direction = dir;
 300     input_direction = direction;
 301     back_direction = reverse_dir(direction);
 302   }
 303
 304   // Walk automatically to the next tile
 305   if(direction != D_NONE)
 306   {
 307     Vector next_tile;
 308     if (worldmap->path_ok(direction, tile_pos, &next_tile))
 309     {
 310       tile_pos = next_tile;
 311     }
 312     else
 313     {
 314       msg_warning("Tilemap data is buggy");
 315       stop();
 316     }
 317   }
 318 }
 319
 320 void
 321 Tux::updateInputDirection()
 322 {
 323   if(main_controller->hold(Controller::UP)) input_direction = D_NORTH;
 324   else if(main_controller->hold(Controller::DOWN)) input_direction = D_SOUTH;
 325   else if(main_controller->hold(Controller::LEFT)) input_direction = D_WEST;
 326   else if(main_controller->hold(Controller::RIGHT)) input_direction = D_EAST;
 327 }
 328
 329
 330 void
 331 Tux::update(float elapsed_time)
 332 {
 333   updateInputDirection();
 334   if (moving) tryContinueWalking(elapsed_time); else tryStartWalking();
 335 }
 336
 337 //---------------------------------------------------------------------------
 338
 339 WorldMap::WorldMap()
 340   : tux(0), solids(0)
 341 {
 342   tile_manager = new TileManager("images/worldmap.strf");
 343
 344   tux = new Tux(this);
 345   add_object(tux);
 346
 347   messagedot = new Surface("images/worldmap/common/messagedot.png");
 348   teleporterdot = new Surface("images/worldmap/common/teleporterdot.png");
 349
 350   name = "<no title>";
 351   music = "music/salcon.ogg";
 352   intro_displayed = false;
 353
 354   total_stats.reset();
 355 }
 356
 357 WorldMap::~WorldMap()
 358 {
 359   clear_objects();
 360   for(SpawnPoints::iterator i = spawn_points.begin();
 361       i != spawn_points.end(); ++i) {
 362     delete *i;
 363   }
 364   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i) {
 365     Level& level = *i;
 366     delete level.sprite;
 367   }
 368
 369   delete tile_manager;
 370
 371   delete messagedot;
 372   delete teleporterdot;
 373 }
 374
 375 void
 376 WorldMap::add_object(GameObject* object)
 377 {
 378   TileMap* tilemap = dynamic_cast<TileMap*> (object);
 379   if(tilemap != 0 && tilemap->is_solid()) {
 380     solids = tilemap;
 381   }
 382
 383   game_objects.push_back(object);
 384 }
 385
 386 void
 387 WorldMap::clear_objects()
 388 {
 389   for(GameObjects::iterator i = game_objects.begin();
 390       i != game_objects.end(); ++i)
 391     delete *i;
 392   game_objects.clear();
 393   solids = 0;
 394   tux = new Tux(this);
 395   add_object(tux);
 396 }
 397
 398 // Don't forget to set map_filename before calling this
 399 void
 400 WorldMap::load_map()
 401 {
 402   levels_path = FileSystem::dirname(map_filename);
 403
 404   try {
 405     lisp::Parser parser;
 406     std::auto_ptr<lisp::Lisp> root (parser.parse(map_filename));
 407
 408     const lisp::Lisp* lisp = root->get_lisp("supertux-level");
 409     if(!lisp)
 410       throw std::runtime_error("file isn't a supertux-level file.");
 411
 412     lisp->get("name", name);
 413
 414     const lisp::Lisp* sector = lisp->get_lisp("sector");
 415     if(!sector)
 416       throw std::runtime_error("No sector sepcified in worldmap file.");
 417
 418     clear_objects();
 419     lisp::ListIterator iter(sector);
 420     while(iter.next()) {
 421       if(iter.item() == "tilemap") {
 422         add_object(new TileMap(*(iter.lisp()), tile_manager));
 423       } else if(iter.item() == "background") {
 424         add_object(new Background(*(iter.lisp())));
 425       } else if(iter.item() == "music") {
 426         iter.value()->get(music);
 427       } else if(iter.item() == "intro-script") {
 428         iter.value()->get(intro_script);
 429       } else if(iter.item() == "worldmap-spawnpoint") {
 430         SpawnPoint* sp = new SpawnPoint(iter.lisp());
 431         spawn_points.push_back(sp);
 432       } else if(iter.item() == "level") {
 433         parse_level_tile(iter.lisp());
 434       } else if(iter.item() == "special-tile") {
 435         parse_special_tile(iter.lisp());
 436       } else {
 437         msg_warning("Unknown token '" << iter.item() << "' in worldmap");
 438       }
 439     }
 440     if(solids == 0)
 441       throw std::runtime_error("No solid tilemap specified");
 442
 443     // search for main spawnpoint
 444     for(SpawnPoints::iterator i = spawn_points.begin();
 445         i != spawn_points.end(); ++i) {
 446       SpawnPoint* sp = *i;
 447       if(sp->name == "main") {
 448         Vector p = sp->pos;
 449         tux->set_tile_pos(p);
 450         break;
 451       }
 452     }
 453
 454   } catch(std::exception& e) {
 455     std::stringstream msg;
 456     msg << "Problem when parsing worldmap '" << map_filename << "': " <<
 457       e.what();
 458     throw std::runtime_error(msg.str());
 459   }
 460 }
 461
 462 void
 463 WorldMap::parse_special_tile(const lisp::Lisp* lisp)
 464 {
 465   SpecialTile special_tile;
 466
 467   lisp->get("x", special_tile.pos.x);
 468   lisp->get("y", special_tile.pos.y);
 469   lisp->get("map-message", special_tile.map_message);
 470   special_tile.passive_message = false;
 471   lisp->get("passive-message", special_tile.passive_message);
 472   special_tile.teleport_dest = Vector(-1,-1);
 473   lisp->get("teleport-to-x", special_tile.teleport_dest.x);
 474   lisp->get("teleport-to-y", special_tile.teleport_dest.y);
 475   special_tile.invisible = false;
 476   lisp->get("invisible-tile", special_tile.invisible);
 477
 478   special_tile.apply_action_north = true;
 479   special_tile.apply_action_south = true;
 480   special_tile.apply_action_east = true;
 481   special_tile.apply_action_west = true;
 482
 483   std::string apply_direction;
 484   lisp->get("apply-to-direction", apply_direction);
 485   if(!apply_direction.empty()) {
 486     special_tile.apply_action_north = false;
 487     special_tile.apply_action_south = false;
 488     special_tile.apply_action_east = false;
 489     special_tile.apply_action_west = false;
 490     if(apply_direction.find("north") != std::string::npos)
 491       special_tile.apply_action_north = true;
 492     if(apply_direction.find("south") != std::string::npos)
 493       special_tile.apply_action_south = true;
 494     if(apply_direction.find("east") != std::string::npos)
 495       special_tile.apply_action_east = true;
 496     if(apply_direction.find("west") != std::string::npos)
 497       special_tile.apply_action_west = true;
 498   }
 499
 500   special_tiles.push_back(special_tile);
 501 }
 502
 503 void
 504 WorldMap::parse_level_tile(const lisp::Lisp* level_lisp)
 505 {
 506   Level level;
 507
 508   level.solved = false;
 509
 510   level.north = true;
 511   level.east  = true;
 512   level.south = true;
 513   level.west  = true;
 514
 515   std::string sprite = "images/worldmap/common/leveldot.sprite";
 516   level_lisp->get("sprite", sprite);
 517   level.sprite = sprite_manager->create(sprite);
 518
 519   level_lisp->get("extro-script", level.extro_script);
 520   level_lisp->get("next-worldmap", level.next_worldmap);
 521
 522   level.quit_worldmap = false;
 523   level_lisp->get("quit-worldmap", level.quit_worldmap);
 524
 525   level_lisp->get("name", level.name);
 526
 527   if (!PHYSFS_exists((levels_path + level.name).c_str()))
 528   {
 529         // Do we want to bail out instead...? We might get messages from modders
 530         // who can't make their levels run because they're too dumb to watch
 531         // their terminals...
 532     msg_warning("level file '" << level.name
 533       << "' does not exist and will not be added to the worldmap");
 534     return;
 535   }
 536
 537   level_lisp->get("x", level.pos.x);
 538   level_lisp->get("y", level.pos.y);
 539
 540   level.auto_path = true;
 541   level_lisp->get("auto-path", level.auto_path);
 542
 543   level.vertical_flip = false;
 544   level_lisp->get("vertical-flip", level.vertical_flip);
 545
 546   levels.push_back(level);
 547 }
 548
 549 void
 550 WorldMap::get_level_title(Level& level)
 551 {
 552   /** get special_tile's title */
 553   level.title = "<no title>";
 554
 555   try {
 556     lisp::Parser parser;
 557     std::auto_ptr<lisp::Lisp> root (parser.parse(levels_path + level.name));
 558
 559     const lisp::Lisp* level_lisp = root->get_lisp("supertux-level");
 560     if(!level_lisp)
 561       return;
 562
 563     level_lisp->get("name", level.title);
 564   } catch(std::exception& e) {
 565     msg_warning("Problem when reading leveltitle: " << e.what());
 566     return;
 567   }
 568 }
 569
 570 void WorldMap::calculate_total_stats()
 571 {
 572   total_stats.reset();
 573   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 574     {
 575     if (i->solved)
 576       {
 577       total_stats += i->statistics;
 578       }
 579     }
 580 }
 581
 582 void
 583 WorldMap::on_escape_press()
 584 {
 585   // Show or hide the menu
 586   if(!Menu::current()) {
 587     Menu::set_current(worldmap_menu);
 588     tux->set_direction(D_NONE);  // stop tux movement when menu is called
 589   } else {
 590     Menu::set_current(0);
 591   }
 592 }
 593
 594 void
 595 WorldMap::get_input()
 596 {
 597   main_controller->update();
 598
 599   SDL_Event event;
 600   while (SDL_PollEvent(&event)) {
 601     if (Menu::current())
 602       Menu::current()->event(event);
 603     main_controller->process_event(event);
 604     if(event.type == SDL_QUIT)
 605       throw graceful_shutdown();
 606   }
 607 }
 608
 609 Vector
 610 WorldMap::get_next_tile(Vector pos, Direction direction)
 611 {
 612   switch(direction) {
 613     case D_WEST:
 614       pos.x -= 1;
 615       break;
 616     case D_EAST:
 617       pos.x += 1;
 618       break;
 619     case D_NORTH:
 620       pos.y -= 1;
 621       break;
 622     case D_SOUTH:
 623       pos.y += 1;
 624       break;
 625     case D_NONE:
 626       break;
 627   }
 628   return pos;
 629 }
 630
 631 bool
 632 WorldMap::path_ok(Direction direction, Vector old_pos, Vector* new_pos)
 633 {
 634   *new_pos = get_next_tile(old_pos, direction);
 635
 636   if (!(new_pos->x >= 0 && new_pos->x < solids->get_width()
 637         && new_pos->y >= 0 && new_pos->y < solids->get_height()))
 638     { // New position is outsite the tilemap
 639       return false;
 640     }
 641   else
 642     { // Check if the tile allows us to go to new_pos
 643       switch(direction)
 644         {
 645         case D_WEST:
 646           return (at(old_pos)->getData() & Tile::WORLDMAP_WEST
 647               && at(*new_pos)->getData() & Tile::WORLDMAP_EAST);
 648
 649         case D_EAST:
 650           return (at(old_pos)->getData() & Tile::WORLDMAP_EAST
 651               && at(*new_pos)->getData() & Tile::WORLDMAP_WEST);
 652
 653         case D_NORTH:
 654           return (at(old_pos)->getData() & Tile::WORLDMAP_NORTH
 655               && at(*new_pos)->getData() & Tile::WORLDMAP_SOUTH);
 656
 657         case D_SOUTH:
 658           return (at(old_pos)->getData() & Tile::WORLDMAP_SOUTH
 659               && at(*new_pos)->getData() & Tile::WORLDMAP_NORTH);
 660
 661         case D_NONE:
 662           assert(!"path_ok() can't work if direction is NONE");
 663         }
 664       return false;
 665     }
 666 }
 667
 668 void
 669 WorldMap::update(float delta)
 670 {
 671   Menu* menu = Menu::current();
 672   if(menu) {
 673     menu->update();
 674
 675     if(menu == worldmap_menu) {
 676       switch (worldmap_menu->check())
 677       {
 678         case MNID_RETURNWORLDMAP: // Return to game
 679           Menu::set_current(0);
 680           break;
 681         case MNID_QUITWORLDMAP: // Quit Worldmap
 682           quit = true;
 683           break;
 684       }
 685     } else if(menu == options_menu) {
 686       process_options_menu();
 687     }
 688
 689     return;
 690   }
 691
 692   // update GameObjects
 693   for(GameObjects::iterator i = game_objects.begin();
 694       i != game_objects.end(); ++i) {
 695     GameObject* object = *i;
 696     object->update(delta);
 697   }
 698   // remove old GameObjects
 699   for(GameObjects::iterator i = game_objects.begin();
 700       i != game_objects.end(); ) {
 701     GameObject* object = *i;
 702     if(!object->is_valid()) {
 703       delete object;
 704       i = game_objects.erase(i);
 705     } else {
 706       ++i;
 707     }
 708   }
 709
 710   bool enter_level = false;
 711   if(main_controller->pressed(Controller::ACTION)
 712       || main_controller->pressed(Controller::JUMP)
 713       || main_controller->pressed(Controller::MENU_SELECT))
 714     enter_level = true;
 715   if(main_controller->pressed(Controller::PAUSE_MENU))
 716     on_escape_press();
 717
 718   if (enter_level && !tux->is_moving())
 719     {
 720       /* Check special tile action */
 721       SpecialTile* special_tile = at_special_tile();
 722       if(special_tile)
 723         {
 724         if (special_tile->teleport_dest != Vector(-1,-1))
 725           {
 726           // TODO: an animation, camera scrolling or a fading would be a nice touch
 727           sound_manager->play("sounds/warp.wav");
 728           tux->back_direction = D_NONE;
 729           tux->set_tile_pos(special_tile->teleport_dest);
 730           SDL_Delay(1000);
 731           }
 732         }
 733
 734       /* Check level action */
 735       bool level_finished = true;
 736       Level* level = at_level();
 737       if (!level)
 738         {
 739         msg_warning("No level to enter at: "
 740           << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y);
 741         return;
 742         }
 743
 744
 745       if (level->pos == tux->get_tile_pos())
 746         {
 747           sound_manager->stop_music();
 748           PlayerStatus old_player_status;
 749           old_player_status = *player_status;
 750
 751           // do a shriking fade to the level
 752           shrink_fade(Vector((level->pos.x*32 + 16 + offset.x),
 753                              (level->pos.y*32 + 16 + offset.y)), 500);
 754           GameSession session(levels_path + level->name,
 755                               ST_GL_LOAD_LEVEL_FILE, &level->statistics);
 756
 757           switch (session.run())
 758             {
 759             case GameSession::ES_LEVEL_FINISHED:
 760               {
 761                 level_finished = true;
 762                 bool old_level_state = level->solved;
 763                 level->solved = true;
 764                 level->sprite->set_action("solved");
 765
 766                 // deal with statistics
 767                 level->statistics.merge(global_stats);
 768                 calculate_total_stats();
 769
 770                 if (old_level_state != level->solved && level->auto_path)
 771                   { // Try to detect the next direction to which we should walk
 772                     // FIXME: Mostly a hack
 773                     Direction dir = D_NONE;
 774
 775                     const Tile* tile = at(tux->get_tile_pos());
 776
 777                     if (tile->getData() & Tile::WORLDMAP_NORTH
 778                         && tux->back_direction != D_NORTH)
 779                       dir = D_NORTH;
 780                     else if (tile->getData() & Tile::WORLDMAP_SOUTH
 781                         && tux->back_direction != D_SOUTH)
 782                       dir = D_SOUTH;
 783                     else if (tile->getData() & Tile::WORLDMAP_EAST
 784                         && tux->back_direction != D_EAST)
 785                       dir = D_EAST;
 786                     else if (tile->getData() & Tile::WORLDMAP_WEST
 787                         && tux->back_direction != D_WEST)
 788                       dir = D_WEST;
 789
 790                     if (dir != D_NONE)
 791                       {
 792                         tux->set_direction(dir);
 793                       }
 794                   }
 795               }
 796
 797               break;
 798             case GameSession::ES_LEVEL_ABORT:
 799               level_finished = false;
 800               /* In case the player's abort the level, keep it using the old
 801                   status. But the minimum lives and no bonus. */
 802               player_status->coins = old_player_status.coins;
 803               player_status->lives = std::min(old_player_status.lives, player_status->lives);
 804               player_status->bonus = NO_BONUS;
 805
 806               break;
 807             case GameSession::ES_GAME_OVER:
 808               {
 809               level_finished = false;
 810               /* draw an end screen */
 811               /* TODO: in the future, this should make a dialog a la SuperMario, asking
 812               if the player wants to restart the world map with no score and from
 813               level 1 */
 814               char str[80];
 815
 816               DrawingContext context;
 817               context.draw_gradient(Color (200,240,220), Color(200,200,220),
 818                   LAYER_BACKGROUND0);
 819
 820               context.draw_text(blue_text, _("GAMEOVER"),
 821                   Vector(SCREEN_WIDTH/2, 200), CENTER_ALLIGN, LAYER_FOREGROUND1);
 822
 823               sprintf(str, _("COINS: %d"), player_status->coins);
 824               context.draw_text(gold_text, str,
 825                   Vector(SCREEN_WIDTH/2, SCREEN_WIDTH - 32), CENTER_ALLIGN,
 826                   LAYER_FOREGROUND1);
 827
 828               total_stats.draw_message_info(context, _("Total Statistics"));
 829
 830               context.do_drawing();
 831
 832               wait_for_event(2.0, 6.0);
 833
 834               quit = true;
 835               player_status->reset();
 836               break;
 837               }
 838             case GameSession::ES_NONE:
 839               assert(false);
 840               // Should never be reached
 841               break;
 842             }
 843
 844           sound_manager->play_music(music);
 845           Menu::set_current(0);
 846           if (!savegame_file.empty())
 847             savegame(savegame_file);
 848         }
 849       /* The porpose of the next checking is that if the player lost
 850          the level (in case there is one), don't show anything */
 851       if(level_finished) {
 852         if (level->extro_script != "") {
 853           try {
 854             std::auto_ptr<ScriptInterpreter> interpreter
 855               (new ScriptInterpreter(levels_path));
 856             std::istringstream in(level->extro_script);
 857             interpreter->run_script(in, "level-extro-script");
 858             add_object(interpreter.release());
 859           } catch(std::exception& e) {
 860             msg_warning("Couldn't run level-extro-script:" << e.what());
 861           }
 862         }
 863
 864         if (!level->next_worldmap.empty())
 865           {
 866           // Load given worldmap
 867           loadmap(level->next_worldmap);
 868           }
 869         if (level->quit_worldmap)
 870           quit = true;
 871         }
 872     }
 873   else
 874     {
 875 //      tux->set_direction(input_direction);
 876     }
 877 }
 878
 879 const Tile*
 880 WorldMap::at(Vector p)
 881 {
 882   return solids->get_tile((int) p.x, (int) p.y);
 883 }
 884
 885 WorldMap::Level*
 886 WorldMap::at_level()
 887 {
 888   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 889     {
 890       if (i->pos == tux->get_tile_pos())
 891         return &*i;
 892     }
 893
 894   return 0;
 895 }
 896
 897 WorldMap::SpecialTile*
 898 WorldMap::at_special_tile()
 899 {
 900   for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
 901     {
 902       if (i->pos == tux->get_tile_pos())
 903         return &*i;
 904     }
 905
 906   return 0;
 907 }
 908
 909 void
 910 WorldMap::draw(DrawingContext& context)
 911 {
 912   for(GameObjects::iterator i = game_objects.begin();
 913       i != game_objects.end(); ++i) {
 914     GameObject* object = *i;
 915     object->draw(context);
 916   }
 917
 918   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 919     {
 920       const Level& level = *i;
 921       level.sprite->draw(context, level.pos*32 + Vector(16, 16), LAYER_TILES+1);
 922     }
 923
 924   for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
 925     {
 926       if(i->invisible)
 927         continue;
 928
 929       if (i->teleport_dest != Vector(-1, -1))
 930         context.draw_surface(teleporterdot,
 931                 Vector(i->pos.x*32, i->pos.y*32), LAYER_TILES+1);
 932
 933       else if (!i->map_message.empty() && !i->passive_message)
 934         context.draw_surface(messagedot,
 935                 Vector(i->pos.x*32, i->pos.y*32), LAYER_TILES+1);
 936     }
 937
 938   draw_status(context);
 939 }
 940
 941 void
 942 WorldMap::draw_status(DrawingContext& context)
 943 {
 944   context.push_transform();
 945   context.set_translation(Vector(0, 0));
 946
 947   player_status->draw(context);
 948
 949   if (!tux->is_moving())
 950     {
 951       for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 952         {
 953           if (i->pos == tux->get_tile_pos())
 954             {
 955               if(i->title == "")
 956                 get_level_title(*i);
 957
 958               context.draw_text(white_text, i->title,
 959                   Vector(SCREEN_WIDTH/2,
 960                          SCREEN_HEIGHT - white_text->get_height() - 30),
 961                   CENTER_ALLIGN, LAYER_FOREGROUND1);
 962
 963               i->statistics.draw_worldmap_info(context);
 964               break;
 965             }
 966         }
 967       for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
 968         {
 969           if (i->pos == tux->get_tile_pos())
 970             {
 971                /* Display an in-map message in the map, if any as been selected */
 972               if(!i->map_message.empty() && !i->passive_message)
 973                 context.draw_text(gold_text, i->map_message,
 974                     Vector(SCREEN_WIDTH/2,
 975                            SCREEN_HEIGHT - white_text->get_height() - 60),
 976                     CENTER_ALLIGN, LAYER_FOREGROUND1);
 977               break;
 978             }
 979         }
 980     }
 981   /* Display a passive message in the map, if needed */
 982   if(passive_message_timer.started())
 983     context.draw_text(gold_text, passive_message,
 984             Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT - white_text->get_height() - 60),
 985             CENTER_ALLIGN, LAYER_FOREGROUND1);
 986
 987   context.pop_transform();
 988 }
 989
 990 void
 991 WorldMap::display()
 992 {
 993   Menu::set_current(0);
 994
 995   quit = false;
 996
 997   sound_manager->play_music(music);
 998
 999   if(!intro_displayed && intro_script != "") {
1000     try {
1001       std::auto_ptr<ScriptInterpreter> interpreter
1002         (new ScriptInterpreter(levels_path));
1003       std::istringstream in(intro_script);
1004       interpreter->run_script(in, "worldmap-intro-script");
1005       add_object(interpreter.release());
1006     } catch(std::exception& e) {
1007       msg_warning("Couldn't execute worldmap-intro-script: "
1008         << e.what());
1009     }
1010
1011     intro_displayed = true;
1012   }
1013
1014   Uint32 lastticks = SDL_GetTicks();
1015   DrawingContext context;
1016   while(!quit) {
1017     Uint32 ticks = SDL_GetTicks();
1018     float elapsed_time = float(ticks - lastticks) / 1000;
1019     game_time += elapsed_time;
1020     lastticks = ticks;
1021
1022     // 40 fps minimum // TODO use same code as in GameSession here
1023     if(elapsed_time > .025)
1024       elapsed_time = .025;
1025
1026     Vector tux_pos = tux->get_pos();
1027     offset.x = tux_pos.x - SCREEN_WIDTH/2;
1028     offset.y = tux_pos.y - SCREEN_HEIGHT/2;
1029
1030     if (offset.x < 0)
1031       offset.x = 0;
1032     if (offset.y < 0)
1033       offset.y = 0;
1034
1035     if (offset.x > solids->get_width()*32 - SCREEN_WIDTH)
1036       offset.x = solids->get_width()*32 - SCREEN_WIDTH;
1037     if (offset.y > solids->get_height()*32 - SCREEN_HEIGHT)
1038       offset.y = solids->get_height()*32 - SCREEN_HEIGHT;
1039
1040     context.push_transform();
1041     context.set_translation(offset);
1042     draw(context);
1043     context.pop_transform();
1044     get_input();
1045     update(elapsed_time);
1046     sound_manager->update();
1047
1048     if(Menu::current()) {
1049       Menu::current()->draw(context);
1050     }
1051
1052     context.do_drawing();
1053   }
1054 }
1055
1056 void
1057 WorldMap::savegame(const std::string& filename)
1058 {
1059   if(filename == "")
1060     return;
1061
1062   std::string dir = FileSystem::dirname(filename);
1063   if(PHYSFS_exists(dir.c_str()) == 0 && PHYSFS_mkdir(dir.c_str()) != 0) {
1064     std::ostringstream msg;
1065     msg << "Couldn't create directory '" << dir << "' for savegame:"
1066         << PHYSFS_getLastError();
1067     throw std::runtime_error(msg.str());
1068   }
1069   if(!PHYSFS_isDirectory(dir.c_str())) {
1070     std::ostringstream msg;
1071     msg << "'" << dir << "' is not a directory.";
1072     throw std::runtime_error(msg.str());
1073   }
1074
1075   lisp::Writer writer(filename);
1076
1077   int nb_solved_levels = 0, total_levels = 0;
1078   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i) {
1079     ++total_levels;
1080     if (i->solved)
1081       ++nb_solved_levels;
1082   }
1083   char nb_solved_levels_str[80], total_levels_str[80];
1084   sprintf(nb_solved_levels_str, "%d", nb_solved_levels);
1085   sprintf(total_levels_str, "%d", total_levels);
1086
1087   writer.write_comment("Worldmap save file");
1088
1089   writer.start_list("supertux-savegame");
1090
1091   writer.write_int("version", 1);
1092   writer.write_string("title",
1093       std::string(name + " - " + nb_solved_levels_str+"/"+total_levels_str));
1094   writer.write_string("map", map_filename);
1095   writer.write_bool("intro-displayed", intro_displayed);
1096
1097   writer.start_list("tux");
1098
1099   writer.write_float("x", tux->get_tile_pos().x);
1100   writer.write_float("y", tux->get_tile_pos().y);
1101   writer.write_string("back", direction_to_string(tux->back_direction));
1102   player_status->write(writer);
1103   writer.write_string("back", direction_to_string(tux->back_direction));
1104
1105   writer.end_list("tux");
1106
1107   writer.start_list("levels");
1108
1109   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1110     {
1111       if (i->solved)
1112         {
1113         writer.start_list("level");
1114
1115         writer.write_string("name", i->name);
1116         writer.write_bool("solved", true);
1117         i->statistics.write(writer);
1118
1119         writer.end_list("level");
1120         }
1121     }
1122
1123   writer.end_list("levels");
1124
1125   writer.end_list("supertux-savegame");
1126 }
1127
1128 void
1129 WorldMap::loadgame(const std::string& filename)
1130 {
1131   msg_debug("loadgame: " << filename);
1132   savegame_file = filename;
1133
1134   if (PHYSFS_exists(filename.c_str())) // savegame exists
1135   {
1136     try {
1137       lisp::Parser parser;
1138
1139       std::auto_ptr<lisp::Lisp> root (parser.parse(filename));
1140
1141       const lisp::Lisp* savegame = root->get_lisp("supertux-savegame");
1142       if(!savegame)
1143         throw std::runtime_error("File is not a supertux-savegame file.");
1144
1145       /* Get the Map filename and then load it before setting level settings */
1146       std::string cur_map_filename = map_filename;
1147       savegame->get("map", map_filename);
1148       load_map();
1149
1150       savegame->get("intro-displayed", intro_displayed);
1151       savegame->get("lives", player_status->lives);
1152       savegame->get("coins", player_status->coins);
1153       savegame->get("max-score-multiplier", player_status->max_score_multiplier);
1154       if (player_status->lives < 0)
1155       player_status->reset();
1156
1157       const lisp::Lisp* tux_lisp = savegame->get_lisp("tux");
1158       if(tux)
1159       {
1160         Vector p;
1161         std::string back_str = "none";
1162
1163         tux_lisp->get("x", p.x);
1164         tux_lisp->get("y", p.y);
1165         tux_lisp->get("back", back_str);
1166           player_status->read(*tux_lisp);
1167
1168         tux->back_direction = string_to_direction(back_str);
1169         tux->set_tile_pos(p);
1170       }
1171
1172       const lisp::Lisp* levels_lisp = savegame->get_lisp("levels");
1173       if(levels_lisp) {
1174         lisp::ListIterator iter(levels_lisp);
1175         while(iter.next()) {
1176           if(iter.item() == "level") {
1177             std::string name;
1178             bool solved = false;
1179
1180             const lisp::Lisp* level = iter.lisp();
1181             level->get("name", name);
1182             level->get("solved", solved);
1183
1184             for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1185             {
1186               if (name == i->name)
1187               {
1188                 i->solved = solved;
1189                 i->sprite->set_action(solved ? "solved" : "default");
1190                 i->statistics.parse(*level);
1191                 break;
1192               }
1193             }
1194           } else {
1195             msg_warning("Unknown token '" << iter.item()
1196                       << "' in levels block in worldmap");
1197           }
1198         }
1199       }
1200     } catch(std::exception& e) {
1201       msg_warning("Problem loading game '" << filename << "': " << e.what());
1202       load_map();
1203       player_status->reset();
1204     }
1205   }
1206   else
1207   {
1208         load_map();
1209     player_status->reset();
1210   }
1211
1212   calculate_total_stats();
1213 }
1214
1215 void
1216 WorldMap::loadmap(const std::string& filename)
1217 {
1218   savegame_file = "";
1219   map_filename = filename;
1220   load_map();
1221 }
1222
1223 } // namespace WorldMapNS