src/worldmap.cpp

   1 //  $Id$
   2 //
   3 //  SuperTux -  A Jump'n Run
   4 //  Copyright (C) 2004 Ingo Ruhnke <grumbel@gmx.de>
   5 //
   6 //  This program is free software; you can redistribute it and/or
   7 //  modify it under the terms of the GNU General Public License
   8 //  as published by the Free Software Foundation; either version 2
   9 //  of the License, or (at your option) any later version.
  10 //
  11 //  This program is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //  GNU General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU General Public License
  17 //  along with this program; if not, write to the Free Software
  18 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19
  20 #include <iostream>
  21 #include <fstream>
  22 #include <vector>
  23 #include <cassert>
  24 #include <unistd.h>
  25
  26 #include "app/globals.h"
  27 #include "video/surface.h"
  28 #include "video/screen.h"
  29 #include "video/drawing_context.h"
  30 #include "utils/lispreader.h"
  31 #include "utils/lispwriter.h"
  32 #include "special/frame_rate.h"
  33 #include "gameloop.h"
  34 #include "app/setup.h"
  35 #include "sector.h"
  36 #include "worldmap.h"
  37 #include "audio/sound_manager.h"
  38 #include "resources.h"
  39 #include "app/gettext.h"
  40 #include "misc.h"
  41
  42 #define map_message_TIME 2800
  43
  44 Menu* worldmap_menu  = 0;
  45
  46 namespace WorldMapNS {
  47
  48 Direction reverse_dir(Direction direction)
  49 {
  50   switch(direction)
  51     {
  52     case D_WEST:
  53       return D_EAST;
  54     case D_EAST:
  55       return D_WEST;
  56     case D_NORTH:
  57       return D_SOUTH;
  58     case D_SOUTH:
  59       return D_NORTH;
  60     case D_NONE:
  61       return D_NONE;
  62     }
  63   return D_NONE;
  64 }
  65
  66 std::string
  67 direction_to_string(Direction direction)
  68 {
  69   switch(direction)
  70     {
  71     case D_WEST:
  72       return "west";
  73     case D_EAST:
  74       return "east";
  75     case D_NORTH:
  76       return "north";
  77     case D_SOUTH:
  78       return "south";
  79     default:
  80       return "none";
  81     }
  82 }
  83
  84 Direction
  85 string_to_direction(const std::string& directory)
  86 {
  87   if (directory == "west")
  88     return D_WEST;
  89   else if (directory == "east")
  90     return D_EAST;
  91   else if (directory == "north")
  92     return D_NORTH;
  93   else if (directory == "south")
  94     return D_SOUTH;
  95   else
  96     return D_NONE;
  97 }
  98
  99 TileManager::TileManager()
 100 {
 101   std::string stwt_filename = datadir +  "/images/worldmap/antarctica.stwt";
 102   lisp_object_t* root_obj = lisp_read_from_file(stwt_filename);
 103
 104   if (!root_obj)
 105     Termination::abort("Couldn't load file", stwt_filename);
 106
 107   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap-tiles") == 0)
 108     {
 109       lisp_object_t* cur = lisp_cdr(root_obj);
 110
 111       while(!lisp_nil_p(cur))
 112         {
 113           lisp_object_t* element = lisp_car(cur);
 114
 115           if (strcmp(lisp_symbol(lisp_car(element)), "tile") == 0)
 116             {
 117               int id = 0;
 118
 119               Tile* tile = new Tile;
 120               tile->north = tile->east = tile->south = tile->west = true;
 121               tile->stop  = true;
 122               tile->auto_walk = false;
 123
 124               LispReader reader(lisp_cdr(element));
 125               reader.read_int("id", id);
 126
 127               std::string temp;
 128               reader.read_string("possible-directions", temp);
 129               if(!temp.empty())
 130                 {
 131                 tile->north = tile->east = tile->south = tile->west = false;
 132                 if(temp.find("north") != std::string::npos)
 133                   tile->north = true;
 134                 if(temp.find("south") != std::string::npos)
 135                   tile->south = true;
 136                 if(temp.find("east") != std::string::npos)
 137                   tile->east = true;
 138                 if(temp.find("west") != std::string::npos)
 139                   tile->west = true;
 140                 }
 141
 142               /* For backward compatibility */
 143               reader.read_bool("north", tile->north);
 144               reader.read_bool("south", tile->south);
 145               reader.read_bool("west",  tile->west);
 146               reader.read_bool("east",  tile->east);
 147
 148               reader.read_bool("stop",  tile->stop);
 149               reader.read_bool("auto-walk",  tile->auto_walk);
 150
 151               reader.read_string("one-way", temp);
 152               tile->one_way = BOTH_WAYS;
 153               if(!temp.empty())
 154                 {
 155                 if(temp == "north-south")
 156                   tile->one_way = NORTH_SOUTH_WAY;
 157                 else if(temp == "south-north")
 158                   tile->one_way = SOUTH_NORTH_WAY;
 159                 else if(temp == "east-west")
 160                   tile->one_way = EAST_WEST_WAY;
 161                 else if(temp == "west-east")
 162                   tile->one_way = WEST_EAST_WAY;
 163                 }
 164
 165               std::vector<std::string> filenames;
 166               reader.read_string_vector("image", filenames);
 167
 168               if(filenames.size() == 0)
 169                 std::cerr << "Warning: no image specified for tile " << id
 170                           << ".\nIgnoring...\n" << std::endl;
 171
 172               for(int i = 0; static_cast<unsigned int>(i) < filenames.size(); i++)
 173                 {
 174                 Surface* image = new Surface(
 175                          datadir +  "/images/worldmap/" + filenames[i], true);
 176                 tile->images.push_back(image);
 177                 }
 178
 179               tile->anim_speed = 25;
 180               reader.read_int("anim-speed", tile->anim_speed);
 181
 182
 183               if (id >= int(tiles.size()))
 184                 tiles.resize(id+1);
 185
 186               tiles[id] = tile;
 187             }
 188           else
 189             {
 190               puts("Unhandled symbol");
 191             }
 192
 193           cur = lisp_cdr(cur);
 194         }
 195     }
 196   else
 197     {
 198       assert(0);
 199     }
 200
 201   lisp_free(root_obj);
 202 }
 203
 204 TileManager::~TileManager()
 205 {
 206   for(std::vector<Tile*>::iterator i = tiles.begin(); i != tiles.end(); ++i)
 207     delete *i;
 208 }
 209
 210 Tile*
 211 TileManager::get(int i)
 212 {
 213   assert(i >=0 && i < int(tiles.size()));
 214   return tiles[i];
 215 }
 216
 217 //---------------------------------------------------------------------------
 218
 219 Tux::Tux(WorldMap* worldmap_)
 220   : worldmap(worldmap_)
 221 {
 222   largetux_sprite = new Surface(datadir +  "/images/worldmap/tux.png", true);
 223   firetux_sprite = new Surface(datadir +  "/images/worldmap/firetux.png", true);
 224   smalltux_sprite = new Surface(datadir +  "/images/worldmap/smalltux.png", true);
 225
 226   offset = 0;
 227   moving = false;
 228   tile_pos.x = worldmap->get_start_x();
 229   tile_pos.y = worldmap->get_start_y();
 230   direction = D_NONE;
 231   input_direction = D_NONE;
 232 }
 233
 234 Tux::~Tux()
 235 {
 236   delete smalltux_sprite;
 237   delete firetux_sprite;
 238   delete largetux_sprite;
 239 }
 240
 241 void
 242 Tux::draw(DrawingContext& context, const Vector& offset)
 243 {
 244   Vector pos = get_pos();
 245   switch (player_status.bonus)
 246     {
 247     case PlayerStatus::GROWUP_BONUS:
 248       context.draw_surface(largetux_sprite,
 249           Vector(pos.x + offset.x, pos.y + offset.y - 10), LAYER_OBJECTS);
 250       break;
 251     case PlayerStatus::FLOWER_BONUS:
 252       context.draw_surface(firetux_sprite,
 253           Vector(pos.x + offset.x, pos.y + offset.y - 10), LAYER_OBJECTS);
 254       break;
 255     case PlayerStatus::NO_BONUS:
 256       context.draw_surface(smalltux_sprite,
 257           Vector(pos.x + offset.x, pos.y + offset.y - 10), LAYER_OBJECTS);
 258       break;
 259     }
 260 }
 261
 262
 263 Vector
 264 Tux::get_pos()
 265 {
 266   float x = tile_pos.x * 32;
 267   float y = tile_pos.y * 32;
 268
 269   switch(direction)
 270     {
 271     case D_WEST:
 272       x -= offset - 32;
 273       break;
 274     case D_EAST:
 275       x += offset - 32;
 276       break;
 277     case D_NORTH:
 278       y -= offset - 32;
 279       break;
 280     case D_SOUTH:
 281       y += offset - 32;
 282       break;
 283     case D_NONE:
 284       break;
 285     }
 286
 287   return Vector((int)x, (int)y);
 288 }
 289
 290 void
 291 Tux::stop()
 292 {
 293   offset = 0;
 294   direction = D_NONE;
 295   input_direction = D_NONE;
 296   moving = false;
 297 }
 298
 299 void
 300 Tux::set_direction(Direction dir)
 301 {
 302 input_direction = dir;
 303 }
 304
 305 void
 306 Tux::action(float delta)
 307 {
 308   if (!moving)
 309     {
 310       if (input_direction != D_NONE)
 311         {
 312           WorldMap::Level* level = worldmap->at_level();
 313
 314           // We got a new direction, so lets start walking when possible
 315           Vector next_tile;
 316           if ((!level || level->solved)
 317               && worldmap->path_ok(input_direction, tile_pos, &next_tile))
 318             {
 319               tile_pos = next_tile;
 320               moving = true;
 321               direction = input_direction;
 322               back_direction = reverse_dir(direction);
 323             }
 324           else if (input_direction == back_direction)
 325             {
 326               moving = true;
 327               direction = input_direction;
 328               tile_pos = worldmap->get_next_tile(tile_pos, direction);
 329               back_direction = reverse_dir(direction);
 330             }
 331         }
 332     }
 333   else
 334     {
 335       // Let tux walk a few pixels (20 pixel/sec)
 336       offset += 20.0f * delta;
 337
 338       if (offset > 32)
 339         { // We reached the next tile, so we check what to do now
 340           offset -= 32;
 341
 342           WorldMap::SpecialTile* special_tile = worldmap->at_special_tile();
 343           if(special_tile && special_tile->passive_message)
 344             {  // direction and the apply_action_ are opposites, since they "see"
 345                // directions in a different way
 346             if((direction == D_NORTH && special_tile->apply_action_south) ||
 347                (direction == D_SOUTH && special_tile->apply_action_north) ||
 348                (direction == D_WEST && special_tile->apply_action_east) ||
 349                (direction == D_EAST && special_tile->apply_action_west))
 350               {
 351               worldmap->passive_message = special_tile->map_message;
 352               worldmap->passive_message_timer.start(map_message_TIME);
 353               }
 354             }
 355
 356           if (worldmap->at(tile_pos)->stop ||
 357              (special_tile && !special_tile->passive_message) ||
 358               worldmap->at_level())
 359             {
 360               if(special_tile && !special_tile->map_message.empty() &&
 361                 !special_tile->passive_message)
 362                 worldmap->passive_message_timer.stop();
 363               stop();
 364             }
 365           else
 366             {
 367               if (worldmap->at(tile_pos)->auto_walk || direction != input_direction)
 368                 { // Turn to a new direction
 369                   Tile* tile = worldmap->at(tile_pos);
 370
 371                   if(direction != input_direction &&
 372                      ((tile->north && input_direction == D_NORTH) ||
 373                      (tile->south && input_direction == D_SOUTH) ||
 374                      (tile->east && input_direction == D_EAST) ||
 375                      (tile->west && input_direction == D_WEST)))
 376                     {  // player has changed direction during auto-movement
 377                     direction = input_direction;
 378                     back_direction = reverse_dir(direction);
 379                     }
 380                   else if(direction != input_direction)
 381                     {  // player has changed to impossible tile
 382                       back_direction = reverse_dir(direction);
 383                       stop();
 384                     }
 385                   else
 386                     {
 387                     Direction dir = D_NONE;
 388
 389                     if (tile->north && back_direction != D_NORTH)
 390                       dir = D_NORTH;
 391                     else if (tile->south && back_direction != D_SOUTH)
 392                       dir = D_SOUTH;
 393                     else if (tile->east && back_direction != D_EAST)
 394                       dir = D_EAST;
 395                     else if (tile->west && back_direction != D_WEST)
 396                       dir = D_WEST;
 397
 398                     if (dir != D_NONE)
 399                       {
 400                       direction = dir;
 401                       input_direction = direction;
 402                       back_direction = reverse_dir(direction);
 403                       }
 404                     else
 405                       {
 406                       // Should never be reached if tiledata is good
 407                       stop();
 408                       return;
 409                       }
 410                     }
 411                   }
 412
 413               // Walk automatically to the next tile
 414               if(direction != D_NONE)
 415                 {
 416                 Vector next_tile;
 417                 if (worldmap->path_ok(direction, tile_pos, &next_tile))
 418                   {
 419                   tile_pos = next_tile;
 420                   }
 421                 else
 422                   {
 423                   puts("Tilemap data is buggy");
 424                   stop();
 425                   }
 426                 }
 427             }
 428         }
 429     }
 430 }
 431
 432 //---------------------------------------------------------------------------
 433 Tile::Tile()
 434 {
 435 }
 436
 437 Tile::~Tile()
 438 {
 439   for(std::vector<Surface*>::iterator i = images.begin(); i != images.end(); i++)
 440     delete *i;
 441 }
 442
 443
 444 void
 445 Tile::draw(DrawingContext& context, Vector pos)
 446 {
 447   // same code as from tile_manager.cpp draw_tile()
 448
 449   if(!images.size())
 450     return;
 451
 452   if(images.size() > 1)
 453     {
 454     size_t frame
 455       = ((global_frame_counter*25) / anim_speed) % images.size();
 456
 457     context.draw_surface(images[frame], pos, LAYER_TILES);
 458     }
 459   else if (images.size() == 1)
 460     {
 461     context.draw_surface(images[0], pos, LAYER_TILES);
 462     }
 463 }
 464
 465 //---------------------------------------------------------------------------
 466
 467 WorldMap::WorldMap()
 468 {
 469   tile_manager = new TileManager();
 470   //tux = new Tux(this);
 471
 472   width  = 20;
 473   height = 15;
 474
 475   start_x = 4;
 476   start_y = 5;
 477
 478   tux = new Tux(this);
 479
 480   leveldot_green = new Surface(datadir +  "/images/worldmap/leveldot_green.png", true);
 481   leveldot_red = new Surface(datadir +  "/images/worldmap/leveldot_red.png", true);
 482   messagedot   = new Surface(datadir +  "/images/worldmap/messagedot.png", true);
 483   teleporterdot   = new Surface(datadir +  "/images/worldmap/teleporterdot.png", true);
 484
 485   enter_level = false;
 486
 487   name = "<no title>";
 488   music = "SALCON.MOD";
 489
 490   global_frame_counter = 0;
 491   frame_timer.init(true);
 492
 493   total_stats.reset();
 494 }
 495
 496 WorldMap::~WorldMap()
 497 {
 498   delete tux;
 499   delete tile_manager;
 500
 501   delete leveldot_green;
 502   delete leveldot_red;
 503   delete messagedot;
 504   delete teleporterdot;
 505 }
 506
 507 // Don't forget to set map_filename before calling this
 508 void
 509 WorldMap::load_map()
 510 {
 511   lisp_object_t* root_obj = lisp_read_from_file(datadir + "/levels/worldmap/" + map_filename);
 512   if (!root_obj)
 513     Termination::abort("Couldn't load file", datadir + "/levels/worldmap/" + map_filename);
 514
 515   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap") == 0)
 516     {
 517       lisp_object_t* cur = lisp_cdr(root_obj);
 518
 519       while(!lisp_nil_p(cur))
 520         {
 521           lisp_object_t* element = lisp_car(cur);
 522
 523           if (strcmp(lisp_symbol(lisp_car(element)), "tilemap") == 0)
 524             {
 525               LispReader reader(lisp_cdr(element));
 526               reader.read_int("width",  width);
 527               reader.read_int("height", height);
 528               reader.read_int_vector("data", tilemap);
 529             }
 530           else if (strcmp(lisp_symbol(lisp_car(element)), "properties") == 0)
 531             {
 532               LispReader reader(lisp_cdr(element));
 533               reader.read_string("name", name, true);
 534               reader.read_string("music", music);
 535               reader.read_int("start_pos_x", start_x);
 536               reader.read_int("start_pos_y", start_y);
 537             }
 538           else if (strcmp(lisp_symbol(lisp_car(element)), "special-tiles") == 0 ||
 539                    strcmp(lisp_symbol(lisp_car(element)), "levels") == 0)
 540             {
 541               lisp_object_t* cur = lisp_cdr(element);
 542
 543               while(!lisp_nil_p(cur))
 544                 {
 545                   lisp_object_t* element = lisp_car(cur);
 546
 547                   if (strcmp(lisp_symbol(lisp_car(element)), "special-tile") == 0)
 548                     {
 549                       SpecialTile special_tile;
 550                       LispReader reader(lisp_cdr(element));
 551
 552                       reader.read_float("x", special_tile.pos.x);
 553                       reader.read_float("y", special_tile.pos.y);
 554
 555                       special_tile.map_message.erase();
 556                       reader.read_string("map-message", special_tile.map_message);
 557                       special_tile.passive_message = false;
 558                       reader.read_bool("passive-message", special_tile.passive_message);
 559
 560                       special_tile.teleport_dest = Vector(-1,-1);
 561                       reader.read_float("teleport-to-x", special_tile.teleport_dest.x);
 562                       reader.read_float("teleport-to-y", special_tile.teleport_dest.y);
 563
 564                       special_tile.invisible = false;
 565                       reader.read_bool("invisible-tile", special_tile.invisible);
 566
 567                       special_tile.apply_action_north = special_tile.apply_action_south =
 568                           special_tile.apply_action_east = special_tile.apply_action_west =
 569                           true;
 570
 571                       std::string apply_direction;
 572                       reader.read_string("apply-to-direction", apply_direction);
 573                       if(!apply_direction.empty())
 574                         {
 575                         special_tile.apply_action_north = special_tile.apply_action_south =
 576                             special_tile.apply_action_east = special_tile.apply_action_west =
 577                             false;
 578                         if(apply_direction.find("north") != std::string::npos)
 579                           special_tile.apply_action_north = true;
 580                         if(apply_direction.find("south") != std::string::npos)
 581                           special_tile.apply_action_south = true;
 582                         if(apply_direction.find("east") != std::string::npos)
 583                           special_tile.apply_action_east = true;
 584                         if(apply_direction.find("west") != std::string::npos)
 585                           special_tile.apply_action_west = true;
 586                         }
 587
 588                       special_tiles.push_back(special_tile);
 589                     }
 590
 591                   else if (strcmp(lisp_symbol(lisp_car(element)), "level") == 0)
 592                     {
 593                       Level level;
 594                       LispReader reader(lisp_cdr(element));
 595                       level.solved = false;
 596
 597                       level.north = true;
 598                       level.east  = true;
 599                       level.south = true;
 600                       level.west  = true;
 601
 602                       reader.read_string("extro-filename", level.extro_filename);
 603                       reader.read_string("next-worldmap", level.next_worldmap);
 604
 605                       level.quit_worldmap = false;
 606                       reader.read_bool("quit-worldmap", level.quit_worldmap);
 607
 608                       reader.read_string("name", level.name, true);
 609                       reader.read_float("x", level.pos.x);
 610                       reader.read_float("y", level.pos.y);
 611
 612                       level.auto_path = true;
 613                       reader.read_bool("auto-path", level.auto_path);
 614
 615                       level.vertical_flip = false;
 616                       reader.read_bool("vertical-flip", level.vertical_flip);
 617
 618                       levels.push_back(level);
 619                     }
 620
 621                   cur = lisp_cdr(cur);
 622                 }
 623             }
 624           else
 625             {
 626
 627             }
 628
 629           cur = lisp_cdr(cur);
 630         }
 631     }
 632
 633     lisp_free(root_obj);
 634
 635     delete tux;
 636     tux = new Tux(this);
 637 }
 638
 639 void WorldMap::get_level_title(Level& level)
 640 {
 641   /** get special_tile's title */
 642   level.title = "<no title>";
 643
 644   LispReader* reader = LispReader::load(datadir + "/levels/" + level.name, "supertux-level");
 645   if(!reader)
 646     {
 647     std::cerr << "Error: Could not open level file. Ignoring...\n";
 648     return;
 649     }
 650
 651   reader->read_string("name", level.title, true);
 652   delete reader;
 653 }
 654
 655 void WorldMap::calculate_total_stats()
 656 {
 657   total_stats.reset();
 658   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 659     {
 660     if (i->solved)
 661       {
 662       total_stats += i->statistics;
 663       }
 664     }
 665 }
 666
 667 void
 668 WorldMap::on_escape_press()
 669 {
 670   // Show or hide the menu
 671   if(!Menu::current())
 672     {
 673     Menu::set_current(worldmap_menu);
 674     tux->set_direction(D_NONE);  // stop tux movement when menu is called
 675     }
 676   else
 677     Menu::set_current(0);
 678 }
 679
 680 void
 681 WorldMap::get_input()
 682 {
 683   enter_level = false;
 684
 685   SDL_Event event;
 686   while (SDL_PollEvent(&event))
 687     {
 688       if (Menu::current())
 689         {
 690           Menu::current()->event(event);
 691         }
 692       else
 693         {
 694           switch(event.type)
 695             {
 696             case SDL_QUIT:
 697               Termination::abort("Received window close", "");
 698               break;
 699
 700             case SDL_KEYDOWN:
 701               switch(event.key.keysym.sym)
 702                 {
 703                 case SDLK_ESCAPE:
 704                   on_escape_press();
 705                   break;
 706                 case SDLK_LCTRL:
 707                 case SDLK_RETURN:
 708                   enter_level = true;
 709                   break;
 710
 711                 case SDLK_LEFT:
 712                   tux->set_direction(D_WEST);
 713                   break;
 714                 case SDLK_RIGHT:
 715                   tux->set_direction(D_EAST);
 716                   break;
 717                 case SDLK_UP:
 718                   tux->set_direction(D_NORTH);
 719                   break;
 720                 case SDLK_DOWN:
 721                   tux->set_direction(D_SOUTH);
 722                   break;
 723
 724                 default:
 725                   break;
 726                 }
 727               break;
 728
 729             case SDL_JOYHATMOTION:
 730               if(event.jhat.value & SDL_HAT_UP) {
 731                 tux->set_direction(D_NORTH);
 732               } else if(event.jhat.value & SDL_HAT_DOWN) {
 733                 tux->set_direction(D_SOUTH);
 734               } else if(event.jhat.value & SDL_HAT_LEFT) {
 735                 tux->set_direction(D_WEST);
 736               } else if(event.jhat.value & SDL_HAT_RIGHT) {
 737                 tux->set_direction(D_EAST);
 738               }
 739               break;
 740
 741             case SDL_JOYAXISMOTION:
 742               if (event.jaxis.axis == joystick_keymap.x_axis)
 743                 {
 744                   if (event.jaxis.value < -joystick_keymap.dead_zone)
 745                     tux->set_direction(D_WEST);
 746                   else if (event.jaxis.value > joystick_keymap.dead_zone)
 747                     tux->set_direction(D_EAST);
 748                 }
 749               else if (event.jaxis.axis == joystick_keymap.y_axis)
 750                 {
 751                   if (event.jaxis.value > joystick_keymap.dead_zone)
 752                     tux->set_direction(D_SOUTH);
 753                   else if (event.jaxis.value < -joystick_keymap.dead_zone)
 754                     tux->set_direction(D_NORTH);
 755                 }
 756               break;
 757
 758             case SDL_JOYBUTTONDOWN:
 759               if (event.jbutton.button == joystick_keymap.b_button)
 760                 enter_level = true;
 761               else if (event.jbutton.button == joystick_keymap.start_button)
 762                 on_escape_press();
 763               break;
 764
 765             default:
 766               break;
 767             }
 768         }
 769     }
 770 }
 771
 772 Vector
 773 WorldMap::get_next_tile(Vector pos, Direction direction)
 774 {
 775   switch(direction)
 776     {
 777     case D_WEST:
 778       pos.x -= 1;
 779       break;
 780     case D_EAST:
 781       pos.x += 1;
 782       break;
 783     case D_NORTH:
 784       pos.y -= 1;
 785       break;
 786     case D_SOUTH:
 787       pos.y += 1;
 788       break;
 789     case D_NONE:
 790       break;
 791     }
 792   return pos;
 793 }
 794
 795 bool
 796 WorldMap::path_ok(Direction direction, Vector old_pos, Vector* new_pos)
 797 {
 798   *new_pos = get_next_tile(old_pos, direction);
 799
 800   if (!(new_pos->x >= 0 && new_pos->x < width
 801         && new_pos->y >= 0 && new_pos->y < height))
 802     { // New position is outsite the tilemap
 803       return false;
 804     }
 805   else if(at(*new_pos)->one_way != BOTH_WAYS)
 806     {
 807 std::cerr << "one way only\n";
 808       if((at(*new_pos)->one_way == NORTH_SOUTH_WAY && direction != D_SOUTH) ||
 809          (at(*new_pos)->one_way == SOUTH_NORTH_WAY && direction != D_NORTH) ||
 810          (at(*new_pos)->one_way == EAST_WEST_WAY && direction != D_WEST) ||
 811          (at(*new_pos)->one_way == WEST_EAST_WAY && direction != D_EAST))
 812         return false;
 813       return true;
 814     }
 815   else
 816     { // Check if we the tile allows us to go to new_pos
 817       switch(direction)
 818         {
 819         case D_WEST:
 820           return (at(old_pos)->west && at(*new_pos)->east);
 821
 822         case D_EAST:
 823           return (at(old_pos)->east && at(*new_pos)->west);
 824
 825         case D_NORTH:
 826           return (at(old_pos)->north && at(*new_pos)->south);
 827
 828         case D_SOUTH:
 829           return (at(old_pos)->south && at(*new_pos)->north);
 830
 831         case D_NONE:
 832           assert(!"path_ok() can't work if direction is NONE");
 833         }
 834       return false;
 835     }
 836 }
 837
 838 void
 839 WorldMap::update(float delta)
 840 {
 841   if(!frame_timer.check())
 842     {
 843     frame_timer.start(25);
 844     global_frame_counter++;
 845     }
 846
 847   if (enter_level && !tux->is_moving())
 848     {
 849       /* Check special tile action */
 850       SpecialTile* special_tile = at_special_tile();
 851       if(special_tile)
 852         {
 853         if (special_tile->teleport_dest != Vector(-1,-1))
 854           {
 855           // TODO: an animation, camera scrolling or a fading would be a nice touch
 856           SoundManager::get()->play_sound(IDToSound(SND_WARP));
 857           tux->back_direction = D_NONE;
 858           tux->set_tile_pos(special_tile->teleport_dest);
 859           SDL_Delay(1000);
 860           }
 861         }
 862
 863       /* Check level action */
 864       bool level_finished = true;
 865       Level* level = at_level();
 866       if (!level)
 867         {
 868         std::cout << "No level to enter at: "
 869           << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << std::endl;
 870         return;
 871         }
 872
 873
 874           if (level->pos == tux->get_tile_pos())
 875             {
 876               PlayerStatus old_player_status = player_status;
 877
 878               std::cout << "Enter the current level: " << level->name << std::endl;
 879               // do a shriking fade to the level
 880               shrink_fade(Vector((level->pos.x*32 + 16 + offset.x),(level->pos.y*32 + 16
 881                       + offset.y)), 500);
 882               GameSession session(level->name,
 883                                   ST_GL_LOAD_LEVEL_FILE, level->vertical_flip,
 884                                   &level->statistics);
 885
 886               switch (session.run())
 887                 {
 888                 case GameSession::ES_LEVEL_FINISHED:
 889                   {
 890                     level_finished = true;
 891                     bool old_level_state = level->solved;
 892                     level->solved = true;
 893
 894                     // deal with statistics
 895                     level->statistics.merge(global_stats);
 896                     calculate_total_stats();
 897
 898                     if (session.get_current_sector()->player->got_power !=
 899                           session.get_current_sector()->player->NONE_POWER)
 900                       player_status.bonus = PlayerStatus::FLOWER_BONUS;
 901                     else if (session.get_current_sector()->player->size == BIG)
 902                       player_status.bonus = PlayerStatus::GROWUP_BONUS;
 903                     else
 904                       player_status.bonus = PlayerStatus::NO_BONUS;
 905
 906                     if (old_level_state != level->solved && level->auto_path)
 907                       { // Try to detect the next direction to which we should walk
 908                         // FIXME: Mostly a hack
 909                         Direction dir = D_NONE;
 910
 911                         Tile* tile = at(tux->get_tile_pos());
 912
 913                         if (tile->north && tux->back_direction != D_NORTH)
 914                           dir = D_NORTH;
 915                         else if (tile->south && tux->back_direction != D_SOUTH)
 916                           dir = D_SOUTH;
 917                         else if (tile->east && tux->back_direction != D_EAST)
 918                           dir = D_EAST;
 919                         else if (tile->west && tux->back_direction != D_WEST)
 920                           dir = D_WEST;
 921
 922                         if (dir != D_NONE)
 923                           {
 924                             tux->set_direction(dir);
 925                             //tux->update(delta);
 926                           }
 927
 928                         std::cout << "Walk to dir: " << dir << std::endl;
 929                       }
 930                   }
 931
 932                   break;
 933                 case GameSession::ES_LEVEL_ABORT:
 934                   level_finished = false;
 935                   /* In case the player's abort the level, keep it using the old
 936                       status. But the minimum lives and no bonus. */
 937                   player_status.distros = old_player_status.distros;
 938                   player_status.lives = std::min(old_player_status.lives, player_status.lives);
 939                   player_status.bonus = player_status.NO_BONUS;
 940
 941                   break;
 942                 case GameSession::ES_GAME_OVER:
 943                   {
 944                   level_finished = false;
 945                   /* draw an end screen */
 946                   /* TODO: in the future, this should make a dialog a la SuperMario, asking
 947                   if the player wants to restart the world map with no score and from
 948                   level 1 */
 949                   char str[80];
 950
 951                   DrawingContext context;
 952                   context.draw_gradient(Color (200,240,220), Color(200,200,220),
 953                       LAYER_BACKGROUND0);
 954
 955                   context.draw_text(blue_text, _("GAMEOVER"),
 956                       Vector(screen->w/2, 200), CENTER_ALLIGN, LAYER_FOREGROUND1);
 957
 958                   sprintf(str, _("COINS: %d"), player_status.distros);
 959                   context.draw_text(gold_text, str,
 960                       Vector(screen->w/2, screen->w - 32), CENTER_ALLIGN, LAYER_FOREGROUND1);
 961
 962                   total_stats.draw_message_info(context, _("Total Statistics"));
 963
 964                   context.do_drawing();
 965
 966                   SDL_Event event;
 967                   wait_for_event(event,2000,6000,true);
 968
 969                   quit = true;
 970                   player_status.reset();
 971                   break;
 972                   }
 973                 case GameSession::ES_NONE:
 974                   assert(false);
 975                   // Should never be reached
 976                   break;
 977                 }
 978
 979               SoundManager::get()->play_music(song);
 980               Menu::set_current(0);
 981               if (!savegame_file.empty())
 982                 savegame(savegame_file);
 983             }
 984       /* The porpose of the next checking is that if the player lost
 985          the level (in case there is one), don't show anything */
 986       if(level_finished)
 987         {
 988         if (!level->extro_filename.empty())
 989           {
 990           // Display a text file
 991           display_text_file(level->extro_filename, SCROLL_SPEED_MESSAGE, white_big_text , white_text, white_small_text, blue_text );
 992           }
 993
 994         if (!level->next_worldmap.empty())
 995           {
 996           // Load given worldmap
 997           loadmap(level->next_worldmap);
 998           }
 999         if (level->quit_worldmap)
1000           quit = true;
1001         }
1002     }
1003   else
1004     {
1005       tux->action(delta);
1006 //      tux->set_direction(input_direction);
1007     }
1008
1009   Menu* menu = Menu::current();
1010   if(menu)
1011     {
1012       menu->action();
1013
1014       if(menu == worldmap_menu)
1015         {
1016           switch (worldmap_menu->check())
1017             {
1018             case MNID_RETURNWORLDMAP: // Return to game
1019               break;
1020             case MNID_QUITWORLDMAP: // Quit Worldmap
1021               quit = true;
1022               break;
1023             }
1024         }
1025       else if(menu == options_menu)
1026         {
1027           process_options_menu();
1028         }
1029     }
1030 }
1031
1032 Tile*
1033 WorldMap::at(Vector p)
1034 {
1035   assert(p.x >= 0
1036          && p.x < width
1037          && p.y >= 0
1038          && p.y < height);
1039
1040   int x = int(p.x);
1041   int y = int(p.y);
1042   return tile_manager->get(tilemap[width * y + x]);
1043 }
1044
1045 WorldMap::Level*
1046 WorldMap::at_level()
1047 {
1048   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1049     {
1050       if (i->pos == tux->get_tile_pos())
1051         return &*i;
1052     }
1053
1054   return 0;
1055 }
1056
1057 WorldMap::SpecialTile*
1058 WorldMap::at_special_tile()
1059 {
1060   for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
1061     {
1062       if (i->pos == tux->get_tile_pos())
1063         return &*i;
1064     }
1065
1066   return 0;
1067 }
1068
1069
1070 void
1071 WorldMap::draw(DrawingContext& context, const Vector& offset)
1072 {
1073   for(int y = 0; y < height; ++y)
1074     for(int x = 0; x < width; ++x)
1075       {
1076         Tile* tile = at(Vector(x, y));
1077         tile->draw(context, Vector(x*32 + offset.x, y*32 + offset.y));
1078       }
1079
1080   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1081     {
1082       if (i->solved)
1083         context.draw_surface(leveldot_green,
1084             Vector(i->pos.x*32 + offset.x, i->pos.y*32 + offset.y), LAYER_TILES+1);
1085       else
1086         context.draw_surface(leveldot_red,
1087             Vector(i->pos.x*32 + offset.x, i->pos.y*32 + offset.y), LAYER_TILES+1);
1088     }
1089
1090   for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
1091     {
1092       if(i->invisible)
1093         continue;
1094
1095       if (i->teleport_dest != Vector(-1, -1))
1096         context.draw_surface(teleporterdot,
1097                 Vector(i->pos.x*32 + offset.x, i->pos.y*32 + offset.y), LAYER_TILES+1);
1098
1099       else if (!i->map_message.empty() && !i->passive_message)
1100         context.draw_surface(messagedot,
1101                 Vector(i->pos.x*32 + offset.x, i->pos.y*32 + offset.y), LAYER_TILES+1);
1102     }
1103
1104   tux->draw(context, offset);
1105   draw_status(context);
1106 }
1107
1108 void
1109 WorldMap::draw_status(DrawingContext& context)
1110 {
1111   char str[80];
1112   sprintf(str, " %d", total_stats.get_points(SCORE_STAT));
1113
1114   context.draw_text(white_text, _("SCORE"), Vector(0, 0), LEFT_ALLIGN, LAYER_FOREGROUND1);
1115   context.draw_text(gold_text, str, Vector(96, 0), LEFT_ALLIGN, LAYER_FOREGROUND1);
1116
1117   sprintf(str, "%d", player_status.distros);
1118   context.draw_text(white_text, _("COINS"), Vector(screen->w/2 - 16*5, 0),
1119       LEFT_ALLIGN, LAYER_FOREGROUND1);
1120   context.draw_text(gold_text, str, Vector(screen->w/2 + (16*5)/2, 0),
1121         LEFT_ALLIGN, LAYER_FOREGROUND1);
1122
1123   if (player_status.lives >= 5)
1124     {
1125       sprintf(str, "%dx", player_status.lives);
1126       context.draw_text(gold_text, str,
1127           Vector(screen->w - gold_text->get_text_width(str) - tux_life->w, 0),
1128           LEFT_ALLIGN, LAYER_FOREGROUND1);
1129       context.draw_surface(tux_life, Vector(screen->w -
1130             gold_text->get_text_width("9"), 0), LEFT_ALLIGN, LAYER_FOREGROUND1);
1131     }
1132   else
1133     {
1134       for(int i= 0; i < player_status.lives; ++i)
1135         context.draw_surface(tux_life,
1136             Vector(screen->w - tux_life->w*4 + (tux_life->w*i), 0),
1137             LAYER_FOREGROUND1);
1138     }
1139   context.draw_text(white_text, _("LIVES"),
1140       Vector(screen->w - white_text->get_text_width(_("LIVES")) - white_text->get_text_width("   99"), 0),
1141       LEFT_ALLIGN, LAYER_FOREGROUND1);
1142
1143   if (!tux->is_moving())
1144     {
1145       for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1146         {
1147           if (i->pos == tux->get_tile_pos())
1148             {
1149               if(i->title == "")
1150                 get_level_title(*i);
1151
1152               context.draw_text(white_text, i->title,
1153                   Vector(screen->w/2,
1154                          screen->h - white_text->get_height() - 30),
1155                   CENTER_ALLIGN, LAYER_FOREGROUND1);
1156
1157               i->statistics.draw_worldmap_info(context);
1158               break;
1159             }
1160         }
1161       for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
1162         {
1163           if (i->pos == tux->get_tile_pos())
1164             {
1165                /* Display an in-map message in the map, if any as been selected */
1166               if(!i->map_message.empty() && !i->passive_message)
1167                 context.draw_text(gold_text, i->map_message,
1168                     Vector(screen->w/2,
1169                            screen->h - white_text->get_height() - 60),
1170                     CENTER_ALLIGN, LAYER_FOREGROUND1);
1171               break;
1172             }
1173         }
1174     }
1175   /* Display a passive message in the map, if needed */
1176   if(passive_message_timer.check())
1177     context.draw_text(gold_text, passive_message,
1178             Vector(screen->w/2, screen->h - white_text->get_height() - 60),
1179             CENTER_ALLIGN, LAYER_FOREGROUND1);
1180 }
1181
1182 void
1183 WorldMap::display()
1184 {
1185   Menu::set_current(0);
1186
1187   quit = false;
1188
1189   song = SoundManager::get()->load_music(datadir +  "/music/" + music);
1190   SoundManager::get()->play_music(song);
1191
1192   FrameRate frame_rate(10);
1193   frame_rate.set_frame_limit(false);
1194
1195   frame_rate.start();
1196
1197   DrawingContext context;
1198   while(!quit)
1199     {
1200       float delta = frame_rate.get();
1201
1202       delta *= 1.3f;
1203
1204       if (delta > 10.0f)
1205         delta = .3f;
1206
1207       frame_rate.update();
1208
1209       Vector tux_pos = tux->get_pos();
1210       if (1)
1211         {
1212           offset.x = -tux_pos.x + screen->w/2;
1213           offset.y = -tux_pos.y + screen->h/2;
1214
1215           if (offset.x > 0) offset.x = 0;
1216           if (offset.y > 0) offset.y = 0;
1217
1218           if (offset.x < screen->w - width*32) offset.x = screen->w - width*32;
1219           if (offset.y < screen->h - height*32) offset.y = screen->h - height*32;
1220         }
1221
1222       draw(context, offset);
1223       get_input();
1224       update(delta);
1225
1226       if(Menu::current())
1227         {
1228           Menu::current()->draw(context);
1229           mouse_cursor->draw(context);
1230         }
1231
1232       context.do_drawing();
1233
1234       SDL_Delay(20);
1235     }
1236 }
1237
1238 void
1239 WorldMap::savegame(const std::string& filename)
1240 {
1241   if(filename == "")
1242     return;
1243
1244   std::cout << "savegame: " << filename << std::endl;
1245
1246    std::ofstream file(filename.c_str(), std::ios::out);
1247    LispWriter* writer = new LispWriter(file);
1248
1249   int nb_solved_levels = 0, total_levels = 0;
1250   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1251     {
1252       ++total_levels;
1253       if (i->solved)
1254         ++nb_solved_levels;
1255     }
1256   char nb_solved_levels_str[80], total_levels_str[80];
1257   sprintf(nb_solved_levels_str, "%d", nb_solved_levels);
1258   sprintf(total_levels_str, "%d", total_levels);
1259
1260   writer->write_comment("Worldmap save file");
1261
1262   writer->start_list("supertux-savegame");
1263
1264   writer->write_int("version", 1);
1265   writer->write_string("title", std::string(name + " - " + nb_solved_levels_str + "/" + total_levels_str));
1266   writer->write_string("map", map_filename);
1267   writer->write_int("lives", player_status.lives);
1268   writer->write_int("distros", player_status.lives);
1269
1270   writer->start_list("tux");
1271
1272   writer->write_float("x", tux->get_tile_pos().x);
1273   writer->write_float("y", tux->get_tile_pos().y);
1274   writer->write_string("back", direction_to_string(tux->back_direction));
1275   writer->write_string("bonus", bonus_to_string(player_status.bonus));
1276
1277   writer->end_list("tux");
1278
1279   writer->start_list("levels");
1280
1281   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1282     {
1283       if (i->solved)
1284         {
1285         writer->start_list("level");
1286
1287         writer->write_string("name", i->name);
1288         writer->write_bool("solved", true);
1289         i->statistics.write(*writer);
1290
1291         writer->end_list("level");
1292         }
1293     }
1294
1295   writer->end_list("levels");
1296
1297   writer->end_list("supertux-savegame");
1298 }
1299
1300 void
1301 WorldMap::loadgame(const std::string& filename)
1302 {
1303   std::cout << "loadgame: " << filename << std::endl;
1304   savegame_file = filename;
1305
1306   if (access(filename.c_str(), F_OK) != 0)
1307     {
1308     load_map();
1309
1310     player_status.reset();
1311
1312     return;
1313     }
1314
1315   lisp_object_t* savegame = lisp_read_from_file(filename);
1316   if (!savegame)
1317     {
1318       std::cout << "WorldMap:loadgame: File not found: " << filename << std::endl;
1319       load_map();
1320       return;
1321     }
1322
1323   lisp_object_t* cur = savegame;
1324
1325   if (strcmp(lisp_symbol(lisp_car(cur)), "supertux-savegame") != 0)
1326     {
1327     load_map();
1328     return;
1329     }
1330
1331   cur = lisp_cdr(cur);
1332   LispReader reader(cur);
1333
1334   /* Get the Map filename and then load it before setting level settings */
1335   std::string cur_map_filename = map_filename;
1336   reader.read_string("map", map_filename);
1337 //  if(cur_map_filename != map_filename)
1338     load_map();
1339
1340   reader.read_int("lives", player_status.lives);
1341   reader.read_int("distros", player_status.distros);
1342
1343   if (player_status.lives < 0)
1344     player_status.lives = START_LIVES;
1345
1346   lisp_object_t* tux_cur = 0;
1347   if (reader.read_lisp("tux", tux_cur))
1348     {
1349       Vector p;
1350       std::string back_str = "none";
1351       std::string bonus_str = "none";
1352
1353       LispReader tux_reader(tux_cur);
1354       tux_reader.read_float("x", p.x);
1355       tux_reader.read_float("y", p.y);
1356       tux_reader.read_string("back", back_str);
1357       tux_reader.read_string("bonus", bonus_str);
1358
1359       player_status.bonus = string_to_bonus(bonus_str);
1360       tux->back_direction = string_to_direction(back_str);
1361       tux->set_tile_pos(p);
1362     }
1363
1364   lisp_object_t* level_cur = 0;
1365   if (reader.read_lisp("levels", level_cur))
1366     {
1367       while(level_cur)
1368         {
1369           lisp_object_t* sym  = lisp_car(lisp_car(level_cur));
1370           lisp_object_t* data = lisp_cdr(lisp_car(level_cur));
1371
1372           if (strcmp(lisp_symbol(sym), "level") == 0)
1373             {
1374               std::string name;
1375               bool solved = false;
1376
1377               LispReader level_reader(data);
1378               level_reader.read_string("name", name);
1379               level_reader.read_bool("solved", solved);
1380
1381               for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1382                 {
1383                   if (name == i->name)
1384                     {
1385                     i->solved = solved;
1386                     i->statistics.parse(level_reader);
1387                     break;
1388                     }
1389                 }
1390             }
1391
1392           level_cur = lisp_cdr(level_cur);
1393         }
1394     }
1395
1396   lisp_free(savegame);
1397
1398   calculate_total_stats();
1399 }
1400
1401 void
1402 WorldMap::loadmap(const std::string& filename)
1403 {
1404   savegame_file = "";
1405   map_filename = filename;
1406   load_map();
1407 }
1408
1409 } // namespace WorldMapNS
1410
1411 /* Local Variables: */
1412 /* mode:c++ */
1413 /* End: */
1414