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 "gameloop.h"
  32 #include "app/setup.h"
  33 #include "sector.h"
  34 #include "worldmap.h"
  35 #include "audio/sound_manager.h"
  36 #include "resources.h"
  37 #include "app/gettext.h"
  38 #include "misc.h"
  39
  40 Menu* worldmap_menu  = 0;
  41
  42 namespace WorldMapNS {
  43
  44 Direction reverse_dir(Direction direction)
  45 {
  46   switch(direction)
  47     {
  48     case D_WEST:
  49       return D_EAST;
  50     case D_EAST:
  51       return D_WEST;
  52     case D_NORTH:
  53       return D_SOUTH;
  54     case D_SOUTH:
  55       return D_NORTH;
  56     case D_NONE:
  57       return D_NONE;
  58     }
  59   return D_NONE;
  60 }
  61
  62 std::string
  63 direction_to_string(Direction direction)
  64 {
  65   switch(direction)
  66     {
  67     case D_WEST:
  68       return "west";
  69     case D_EAST:
  70       return "east";
  71     case D_NORTH:
  72       return "north";
  73     case D_SOUTH:
  74       return "south";
  75     default:
  76       return "none";
  77     }
  78 }
  79
  80 Direction
  81 string_to_direction(const std::string& directory)
  82 {
  83   if (directory == "west")
  84     return D_WEST;
  85   else if (directory == "east")
  86     return D_EAST;
  87   else if (directory == "north")
  88     return D_NORTH;
  89   else if (directory == "south")
  90     return D_SOUTH;
  91   else
  92     return D_NONE;
  93 }
  94
  95 TileManager::TileManager()
  96 {
  97   std::string stwt_filename = datadir +  "/images/worldmap/antarctica.stwt";
  98   lisp_object_t* root_obj = lisp_read_from_file(stwt_filename);
  99
 100   if (!root_obj)
 101     Termination::abort("Couldn't load file", stwt_filename);
 102
 103   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap-tiles") == 0)
 104     {
 105       lisp_object_t* cur = lisp_cdr(root_obj);
 106
 107       while(!lisp_nil_p(cur))
 108         {
 109           lisp_object_t* element = lisp_car(cur);
 110
 111           if (strcmp(lisp_symbol(lisp_car(element)), "tile") == 0)
 112             {
 113               int id = 0;
 114               std::string filename = "<invalid>";
 115
 116               Tile* tile = new Tile;
 117               tile->north = true;
 118               tile->east  = true;
 119               tile->south = true;
 120               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               reader.read_bool("north", tile->north);
 127               reader.read_bool("south", tile->south);
 128               reader.read_bool("west",  tile->west);
 129               reader.read_bool("east",  tile->east);
 130               reader.read_bool("stop",  tile->stop);
 131               reader.read_bool("auto-walk",  tile->auto_walk);
 132               reader.read_string("image", filename);
 133
 134               tile->sprite = new Surface(
 135                            datadir +  "/images/worldmap/" + filename,
 136                            true);
 137
 138               if (id >= int(tiles.size()))
 139                 tiles.resize(id+1);
 140
 141               tiles[id] = tile;
 142             }
 143           else
 144             {
 145               puts("Unhandled symbol");
 146             }
 147
 148           cur = lisp_cdr(cur);
 149         }
 150     }
 151   else
 152     {
 153       assert(0);
 154     }
 155
 156   lisp_free(root_obj);
 157 }
 158
 159 TileManager::~TileManager()
 160 {
 161   for(std::vector<Tile*>::iterator i = tiles.begin(); i != tiles.end(); ++i)
 162     delete *i;
 163 }
 164
 165 Tile*
 166 TileManager::get(int i)
 167 {
 168   assert(i >=0 && i < int(tiles.size()));
 169   return tiles[i];
 170 }
 171
 172 //---------------------------------------------------------------------------
 173
 174 Tux::Tux(WorldMap* worldmap_)
 175   : worldmap(worldmap_)
 176 {
 177   largetux_sprite = new Surface(datadir +  "/images/worldmap/tux.png", true);
 178   firetux_sprite = new Surface(datadir +  "/images/worldmap/firetux.png", true);
 179   smalltux_sprite = new Surface(datadir +  "/images/worldmap/smalltux.png", true);
 180
 181   offset = 0;
 182   moving = false;
 183   tile_pos.x = worldmap->get_start_x();
 184   tile_pos.y = worldmap->get_start_y();
 185   direction = D_NONE;
 186   input_direction = D_NONE;
 187 }
 188
 189 Tux::~Tux()
 190 {
 191   delete smalltux_sprite;
 192   delete firetux_sprite;
 193   delete largetux_sprite;
 194 }
 195
 196 void
 197 Tux::draw(DrawingContext& context, const Vector& offset)
 198 {
 199   Vector pos = get_pos();
 200   switch (player_status.bonus)
 201     {
 202     case PlayerStatus::GROWUP_BONUS:
 203       context.draw_surface(largetux_sprite,
 204           Vector(pos.x + offset.x, pos.y + offset.y - 10), LAYER_OBJECTS);
 205       break;
 206     case PlayerStatus::FLOWER_BONUS:
 207       context.draw_surface(firetux_sprite,
 208           Vector(pos.x + offset.x, pos.y + offset.y - 10), LAYER_OBJECTS);
 209       break;
 210     case PlayerStatus::NO_BONUS:
 211       context.draw_surface(smalltux_sprite,
 212           Vector(pos.x + offset.x, pos.y + offset.y - 10), LAYER_OBJECTS);
 213       break;
 214     }
 215 }
 216
 217
 218 Vector
 219 Tux::get_pos()
 220 {
 221   float x = tile_pos.x * 32;
 222   float y = tile_pos.y * 32;
 223
 224   switch(direction)
 225     {
 226     case D_WEST:
 227       x -= offset - 32;
 228       break;
 229     case D_EAST:
 230       x += offset - 32;
 231       break;
 232     case D_NORTH:
 233       y -= offset - 32;
 234       break;
 235     case D_SOUTH:
 236       y += offset - 32;
 237       break;
 238     case D_NONE:
 239       break;
 240     }
 241
 242   return Vector((int)x, (int)y);
 243 }
 244
 245 void
 246 Tux::stop()
 247 {
 248   offset = 0;
 249   direction = D_NONE;
 250   input_direction = D_NONE;
 251   moving = false;
 252 }
 253
 254 void
 255 Tux::set_direction(Direction dir)
 256 {
 257 input_direction = dir;
 258 }
 259
 260 void
 261 Tux::action(float delta)
 262 {
 263   if (!moving)
 264     {
 265       if (input_direction != D_NONE)
 266         {
 267           WorldMap::SpecialTile* special_tile = worldmap->at_special_tile();
 268
 269           // We got a new direction, so lets start walking when possible
 270           Vector next_tile;
 271           if ((!special_tile || special_tile->solved || special_tile->level_name.empty())
 272               && worldmap->path_ok(input_direction, tile_pos, &next_tile))
 273             {
 274               tile_pos = next_tile;
 275               moving = true;
 276               direction = input_direction;
 277               back_direction = reverse_dir(direction);
 278             }
 279           else if (input_direction == back_direction)
 280             {
 281               moving = true;
 282               direction = input_direction;
 283               tile_pos = worldmap->get_next_tile(tile_pos, direction);
 284               back_direction = reverse_dir(direction);
 285             }
 286         }
 287     }
 288   else
 289     {
 290       // Let tux walk a few pixels (20 pixel/sec)
 291       offset += 20.0f * delta;
 292
 293       if (offset > 32)
 294         { // We reached the next tile, so we check what to do now
 295           offset -= 32;
 296
 297           if (worldmap->at(tile_pos)->stop || worldmap->at_special_tile())
 298             {
 299               stop();
 300             }
 301           else
 302             {
 303               if (worldmap->at(tile_pos)->auto_walk || direction != input_direction)
 304                 { // Turn to a new direction
 305                   Tile* tile = worldmap->at(tile_pos);
 306
 307                   if(direction != input_direction &&
 308                      ((tile->north && input_direction == D_NORTH) ||
 309                      (tile->south && input_direction == D_SOUTH) ||
 310                      (tile->east && input_direction == D_EAST) ||
 311                      (tile->west && input_direction == D_WEST)))
 312                     {  // player has changed direction during auto-movement
 313                     direction = input_direction;
 314                     back_direction = reverse_dir(direction);
 315                     }
 316                   else if(direction != input_direction)
 317                     {  // player has changed to impossible tile
 318                       back_direction = reverse_dir(direction);
 319                       stop();
 320                     }
 321                   else
 322                     {
 323                     Direction dir = D_NONE;
 324
 325                     if (tile->north && back_direction != D_NORTH)
 326                       dir = D_NORTH;
 327                     else if (tile->south && back_direction != D_SOUTH)
 328                       dir = D_SOUTH;
 329                     else if (tile->east && back_direction != D_EAST)
 330                       dir = D_EAST;
 331                     else if (tile->west && back_direction != D_WEST)
 332                       dir = D_WEST;
 333
 334                     if (dir != D_NONE)
 335                       {
 336                       direction = dir;
 337                       input_direction = direction;
 338                       back_direction = reverse_dir(direction);
 339                       }
 340                     else
 341                       {
 342                       // Should never be reached if tiledata is good
 343                       stop();
 344                       return;
 345                       }
 346                     }
 347                   }
 348
 349               // Walk automatically to the next tile
 350               if(direction != D_NONE)
 351                 {
 352                 Vector next_tile;
 353                 if (worldmap->path_ok(direction, tile_pos, &next_tile))
 354                   {
 355                   tile_pos = next_tile;
 356                   }
 357                 else
 358                   {
 359                   puts("Tilemap data is buggy");
 360                   stop();
 361                   }
 362                 }
 363             }
 364         }
 365     }
 366 }
 367
 368 //---------------------------------------------------------------------------
 369 Tile::Tile()
 370 {
 371 }
 372
 373 Tile::~Tile()
 374 {
 375   delete sprite;
 376 }
 377
 378 //---------------------------------------------------------------------------
 379
 380 WorldMap::WorldMap()
 381 {
 382   tile_manager = new TileManager();
 383   //tux = new Tux(this);
 384
 385   width  = 20;
 386   height = 15;
 387
 388   start_x = 4;
 389   start_y = 5;
 390
 391   level_sprite = new Surface(datadir +  "/images/worldmap/levelmarker.png", true);
 392   leveldot_green = new Surface(datadir +  "/images/worldmap/leveldot_green.png", true);
 393   leveldot_red = new Surface(datadir +  "/images/worldmap/leveldot_red.png", true);
 394
 395   enter_level = false;
 396
 397   name = "<no title>";
 398   music = "SALCON.MOD";
 399 }
 400
 401 WorldMap::~WorldMap()
 402 {
 403   delete tux;
 404   delete tile_manager;
 405
 406   delete level_sprite;
 407   delete leveldot_green;
 408   delete leveldot_red;
 409 }
 410
 411 void
 412 WorldMap::load_map()
 413 {
 414   lisp_object_t* root_obj = lisp_read_from_file(datadir + "/levels/worldmap/" + map_filename);
 415   if (!root_obj)
 416     Termination::abort("Couldn't load file", datadir + "/levels/worldmap/" + map_filename);
 417
 418   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap") == 0)
 419     {
 420       lisp_object_t* cur = lisp_cdr(root_obj);
 421
 422       while(!lisp_nil_p(cur))
 423         {
 424           lisp_object_t* element = lisp_car(cur);
 425
 426           if (strcmp(lisp_symbol(lisp_car(element)), "tilemap") == 0)
 427             {
 428               LispReader reader(lisp_cdr(element));
 429               reader.read_int("width",  width);
 430               reader.read_int("height", height);
 431               reader.read_int_vector("data", tilemap);
 432             }
 433           else if (strcmp(lisp_symbol(lisp_car(element)), "properties") == 0)
 434             {
 435               LispReader reader(lisp_cdr(element));
 436               reader.read_string("name", name, true);
 437               reader.read_string("music", music);
 438               reader.read_int("start_pos_x", start_x);
 439               reader.read_int("start_pos_y", start_y);
 440             }
 441           else if (strcmp(lisp_symbol(lisp_car(element)), "special-tiles") == 0 ||
 442                    strcmp(lisp_symbol(lisp_car(element)), "levels") == 0)
 443             {
 444               lisp_object_t* cur = lisp_cdr(element);
 445
 446               while(!lisp_nil_p(cur))
 447                 {
 448                   lisp_object_t* element = lisp_car(cur);
 449
 450                   if (strcmp(lisp_symbol(lisp_car(element)), "special-tile") == 0)
 451                     {
 452                       SpecialTile special_tile;
 453                       LispReader reader(lisp_cdr(element));
 454                       special_tile.solved = false;
 455
 456                       special_tile.north = true;
 457                       special_tile.east  = true;
 458                       special_tile.south = true;
 459                       special_tile.west  = true;
 460
 461                       reader.read_string("extro-filename", special_tile.extro_filename);
 462                       reader.read_string("map-message", special_tile.display_map_message);
 463                       reader.read_string("next-world", special_tile.next_worldmap);
 464                       reader.read_string("level", special_tile.level_name, true);
 465                       reader.read_int("x", special_tile.x);
 466                       reader.read_int("y", special_tile.y);
 467                       special_tile.auto_path = true;
 468                       reader.read_bool("auto-path", special_tile.auto_path);
 469                       special_tile.swap_x = special_tile.swap_y = -1;
 470                       reader.read_int("swap-x", special_tile.swap_x);
 471                       reader.read_int("swap-y", special_tile.swap_y);
 472                       special_tile.vertical_flip = false;
 473                       reader.read_bool("flip-special_tile", special_tile.vertical_flip);
 474                       special_tile.quit_worldmap = false;
 475                       reader.read_bool("exit-game", special_tile.quit_worldmap);
 476
 477                       special_tiles.push_back(special_tile);
 478                     }
 479
 480                   /* Kept for backward compability */
 481                   else if (strcmp(lisp_symbol(lisp_car(element)), "level") == 0)
 482                     {
 483                       SpecialTile special_tile;
 484                       LispReader reader(lisp_cdr(element));
 485                       special_tile.solved = false;
 486
 487                       special_tile.north = true;
 488                       special_tile.east  = true;
 489                       special_tile.south = true;
 490                       special_tile.west  = true;
 491
 492                       reader.read_string("extro-filename", special_tile.extro_filename);
 493                       if(!special_tile.extro_filename.empty())
 494                         special_tile.quit_worldmap = true;
 495                       reader.read_string("name", special_tile.level_name, true);
 496                       reader.read_int("x", special_tile.x);
 497                       reader.read_int("y", special_tile.y);
 498                       special_tile.vertical_flip = false;
 499                       special_tile.swap_x = special_tile.swap_y = -1;
 500
 501                       special_tiles.push_back(special_tile);
 502                     }
 503
 504                   cur = lisp_cdr(cur);
 505                 }
 506             }
 507           else
 508             {
 509
 510             }
 511
 512           cur = lisp_cdr(cur);
 513         }
 514     }
 515
 516     lisp_free(root_obj);
 517     tux = new Tux(this);
 518 }
 519
 520 void WorldMap::get_level_title(SpecialTile& special_tile)
 521 {
 522   /** get special_tile's title */
 523   special_tile.title = "<no title>";
 524
 525   LispReader* reader = LispReader::load(datadir + "/levels/" + special_tile.level_name, "supertux-level");
 526   if(!reader)
 527     {
 528     std::cerr << "Error: Could not open special_tile file. Ignoring...\n";
 529     return;
 530     }
 531
 532   reader->read_string("name", special_tile.title, true);
 533   delete reader;
 534 }
 535
 536 void
 537 WorldMap::on_escape_press()
 538 {
 539   // Show or hide the menu
 540   if(!Menu::current())
 541     {
 542     Menu::set_current(worldmap_menu);
 543     tux->set_direction(D_NONE);  // stop tux movement when menu is called
 544     }
 545   else
 546     Menu::set_current(0);
 547 }
 548
 549 void
 550 WorldMap::get_input()
 551 {
 552   enter_level = false;
 553
 554   SDL_Event event;
 555   while (SDL_PollEvent(&event))
 556     {
 557       if (Menu::current())
 558         {
 559           Menu::current()->event(event);
 560         }
 561       else
 562         {
 563           switch(event.type)
 564             {
 565             case SDL_QUIT:
 566               Termination::abort("Received window close", "");
 567               break;
 568
 569             case SDL_KEYDOWN:
 570               switch(event.key.keysym.sym)
 571                 {
 572                 case SDLK_ESCAPE:
 573                   on_escape_press();
 574                   break;
 575                 case SDLK_LCTRL:
 576                 case SDLK_RETURN:
 577                   enter_level = true;
 578                   break;
 579
 580                 case SDLK_LEFT:
 581                   tux->set_direction(D_WEST);
 582                   break;
 583                 case SDLK_RIGHT:
 584                   tux->set_direction(D_EAST);
 585                   break;
 586                 case SDLK_UP:
 587                   tux->set_direction(D_NORTH);
 588                   break;
 589                 case SDLK_DOWN:
 590                   tux->set_direction(D_SOUTH);
 591                   break;
 592
 593                 default:
 594                   break;
 595                 }
 596               break;
 597
 598             case SDL_JOYAXISMOTION:
 599               if (event.jaxis.axis == joystick_keymap.x_axis)
 600                 {
 601                   if (event.jaxis.value < -joystick_keymap.dead_zone)
 602                     tux->set_direction(D_WEST);
 603                   else if (event.jaxis.value > joystick_keymap.dead_zone)
 604                     tux->set_direction(D_EAST);
 605                 }
 606               else if (event.jaxis.axis == joystick_keymap.y_axis)
 607                 {
 608                   if (event.jaxis.value > joystick_keymap.dead_zone)
 609                     tux->set_direction(D_SOUTH);
 610                   else if (event.jaxis.value < -joystick_keymap.dead_zone)
 611                     tux->set_direction(D_NORTH);
 612                 }
 613               break;
 614
 615             case SDL_JOYBUTTONDOWN:
 616               if (event.jbutton.button == joystick_keymap.b_button)
 617                 enter_level = true;
 618               else if (event.jbutton.button == joystick_keymap.start_button)
 619                 on_escape_press();
 620               break;
 621
 622             default:
 623               break;
 624             }
 625         }
 626     }
 627 }
 628
 629 Vector
 630 WorldMap::get_next_tile(Vector pos, Direction direction)
 631 {
 632   switch(direction)
 633     {
 634     case D_WEST:
 635       pos.x -= 1;
 636       break;
 637     case D_EAST:
 638       pos.x += 1;
 639       break;
 640     case D_NORTH:
 641       pos.y -= 1;
 642       break;
 643     case D_SOUTH:
 644       pos.y += 1;
 645       break;
 646     case D_NONE:
 647       break;
 648     }
 649   return pos;
 650 }
 651
 652 bool
 653 WorldMap::path_ok(Direction direction, Vector old_pos, Vector* new_pos)
 654 {
 655   *new_pos = get_next_tile(old_pos, direction);
 656
 657   if (!(new_pos->x >= 0 && new_pos->x < width
 658         && new_pos->y >= 0 && new_pos->y < height))
 659     { // New position is outsite the tilemap
 660       return false;
 661     }
 662   else
 663     { // Check if we the tile allows us to go to new_pos
 664       switch(direction)
 665         {
 666         case D_WEST:
 667           return (at(old_pos)->west && at(*new_pos)->east);
 668
 669         case D_EAST:
 670           return (at(old_pos)->east && at(*new_pos)->west);
 671
 672         case D_NORTH:
 673           return (at(old_pos)->north && at(*new_pos)->south);
 674
 675         case D_SOUTH:
 676           return (at(old_pos)->south && at(*new_pos)->north);
 677
 678         case D_NONE:
 679           assert(!"path_ok() can't work if direction is NONE");
 680         }
 681       return false;
 682     }
 683 }
 684
 685 void
 686 WorldMap::update(float delta)
 687 {
 688   if (enter_level && !tux->is_moving())
 689     {
 690       bool level_finished = true;
 691       SpecialTile* special_tile = at_special_tile();
 692       if (!special_tile)
 693         {
 694         std::cout << "Nothing to enter at: "
 695           << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << std::endl;
 696         return;
 697         }
 698
 699
 700       if(!special_tile->level_name.empty())
 701         {
 702           if (special_tile->x == tux->get_tile_pos().x &&
 703               special_tile->y == tux->get_tile_pos().y)
 704             {
 705               PlayerStatus old_player_status = player_status;
 706
 707               std::cout << "Enter the current special_tile: " << special_tile->level_name << std::endl;
 708               // do a shriking fade to the special_tile
 709               shrink_fade(Vector((special_tile->x*32 + 16 + offset.x),(special_tile->y*32 + 16
 710                       + offset.y)), 500);
 711               GameSession session(datadir +  "/levels/" + special_tile->level_name,
 712                                   ST_GL_LOAD_LEVEL_FILE, special_tile->vertical_flip);
 713
 714               switch (session.run())
 715                 {
 716                 case GameSession::ES_LEVEL_FINISHED:
 717                   {
 718                     level_finished = true;
 719                     bool old_level_state = special_tile->solved;
 720                     special_tile->solved = true;
 721
 722                     if (session.get_current_sector()->player->got_power !=
 723                           session.get_current_sector()->player->NONE_POWER)
 724                       player_status.bonus = PlayerStatus::FLOWER_BONUS;
 725                     else if (session.get_current_sector()->player->size == BIG)
 726                       player_status.bonus = PlayerStatus::GROWUP_BONUS;
 727                     else
 728                       player_status.bonus = PlayerStatus::NO_BONUS;
 729
 730                     if (old_level_state != special_tile->solved && special_tile->auto_path)
 731                       { // Try to detect the next direction to which we should walk
 732                         // FIXME: Mostly a hack
 733                         Direction dir = D_NONE;
 734
 735                         Tile* tile = at(tux->get_tile_pos());
 736
 737                         if (tile->north && tux->back_direction != D_NORTH)
 738                           dir = D_NORTH;
 739                         else if (tile->south && tux->back_direction != D_SOUTH)
 740                           dir = D_SOUTH;
 741                         else if (tile->east && tux->back_direction != D_EAST)
 742                           dir = D_EAST;
 743                         else if (tile->west && tux->back_direction != D_WEST)
 744                           dir = D_WEST;
 745
 746                         if (dir != D_NONE)
 747                           {
 748                             tux->set_direction(dir);
 749                             //tux->update(delta);
 750                           }
 751
 752                         std::cout << "Walk to dir: " << dir << std::endl;
 753                       }
 754                   }
 755
 756                   break;
 757                 case GameSession::ES_LEVEL_ABORT:
 758                   level_finished = false;
 759                   /* In case the player's abort the special_tile, keep it using the old
 760                       status. But the minimum lives and no bonus. */
 761                   player_status.score = old_player_status.score;
 762                   player_status.distros = old_player_status.distros;
 763                   player_status.lives = std::min(old_player_status.lives, player_status.lives);
 764                   player_status.bonus = player_status.NO_BONUS;
 765
 766                   break;
 767                 case GameSession::ES_GAME_OVER:
 768                   {
 769                   level_finished = false;
 770                   /* draw an end screen */
 771                   /* in the future, this should make a dialog a la SuperMario, asking
 772                   if the player wants to restart the world map with no score and from
 773                   special_tile 1 */
 774                   char str[80];
 775
 776                   DrawingContext context;
 777                   context.draw_gradient(Color (200,240,220), Color(200,200,220),
 778                       LAYER_BACKGROUND0);
 779
 780                   context.draw_text_center(blue_text, _("GAMEOVER"),
 781                       Vector(0, 200), LAYER_FOREGROUND1);
 782
 783                   sprintf(str, _("SCORE: %d"), player_status.score);
 784                   context.draw_text_center(gold_text, str,
 785                       Vector(0, 230), LAYER_FOREGROUND1);
 786
 787                   sprintf(str, _("COINS: %d"), player_status.distros);
 788                   context.draw_text_center(gold_text, str,
 789                       Vector(0, screen->w - 32), LAYER_FOREGROUND1);
 790
 791                   context.do_drawing();
 792
 793                   SDL_Event event;
 794                   wait_for_event(event,2000,5000,true);
 795
 796                   quit = true;
 797                   player_status.reset();
 798                   break;
 799                   }
 800                 case GameSession::ES_NONE:
 801                   assert(false);
 802                   // Should never be reached
 803                   break;
 804                 }
 805
 806               SoundManager::get()->play_music(song);
 807               Menu::set_current(0);
 808               if (!savegame_file.empty())
 809                 savegame(savegame_file);
 810             }
 811         }
 812       /* The porpose of the next checking is that if the player lost
 813          the special_tile (in case there is one), don't show anything */
 814       if(level_finished)
 815         {
 816         if (!special_tile->extro_filename.empty())
 817           {
 818           // Display a text file
 819           display_text_file(special_tile->extro_filename, SCROLL_SPEED_MESSAGE, white_big_text , white_text, white_small_text, blue_text );
 820           }
 821         if (special_tile->swap_x != -1 && special_tile->swap_y != -1)
 822           {
 823           // TODO: add an effect, like a camera scrolling, or at least, a fading
 824           tux->set_tile_pos(Vector(special_tile->swap_x, special_tile->swap_y));
 825           }
 826         if (!special_tile->next_worldmap.empty())
 827           {
 828           // Load given worldmap
 829           loadmap(special_tile->next_worldmap);
 830           }
 831         if (special_tile->quit_worldmap)
 832           quit = true;
 833         }
 834     }
 835   else
 836     {
 837       tux->action(delta);
 838 //      tux->set_direction(input_direction);
 839     }
 840
 841   Menu* menu = Menu::current();
 842   if(menu)
 843     {
 844       menu->action();
 845
 846       if(menu == worldmap_menu)
 847         {
 848           switch (worldmap_menu->check())
 849             {
 850             case MNID_RETURNWORLDMAP: // Return to game
 851               break;
 852             case MNID_QUITWORLDMAP: // Quit Worldmap
 853               quit = true;
 854               break;
 855             }
 856         }
 857       else if(menu == options_menu)
 858         {
 859           process_options_menu();
 860         }
 861     }
 862 }
 863
 864 Tile*
 865 WorldMap::at(Vector p)
 866 {
 867   assert(p.x >= 0
 868          && p.x < width
 869          && p.y >= 0
 870          && p.y < height);
 871
 872   int x = int(p.x);
 873   int y = int(p.y);
 874   return tile_manager->get(tilemap[width * y + x]);
 875 }
 876
 877 WorldMap::SpecialTile*
 878 WorldMap::at_special_tile()
 879 {
 880   for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
 881     {
 882       if (i->x == tux->get_tile_pos().x &&
 883           i->y == tux->get_tile_pos().y)
 884         return &*i;
 885     }
 886
 887   return 0;
 888 }
 889
 890
 891 void
 892 WorldMap::draw(DrawingContext& context, const Vector& offset)
 893 {
 894   for(int y = 0; y < height; ++y)
 895     for(int x = 0; x < width; ++x)
 896       {
 897         Tile* tile = at(Vector(x, y));
 898         context.draw_surface(tile->sprite,
 899             Vector(x*32 + offset.x, y*32 + offset.y), LAYER_TILES);
 900       }
 901
 902   for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
 903     {
 904       if(i->level_name.empty())
 905         continue;
 906
 907       if (i->solved)
 908         context.draw_surface(leveldot_green,
 909             Vector(i->x*32 + offset.x, i->y*32 + offset.y), LAYER_TILES+1);
 910       else
 911         context.draw_surface(leveldot_red,
 912             Vector(i->x*32 + offset.x, i->y*32 + offset.y), LAYER_TILES+1);
 913     }
 914
 915   tux->draw(context, offset);
 916   draw_status(context);
 917 }
 918
 919 void
 920 WorldMap::draw_status(DrawingContext& context)
 921 {
 922   char str[80];
 923   sprintf(str, " %d", player_status.score);
 924
 925   context.draw_text(white_text, _("SCORE"), Vector(0, 0), LAYER_FOREGROUND1);
 926   context.draw_text(gold_text, str, Vector(96, 0), LAYER_FOREGROUND1);
 927
 928   sprintf(str, "%d", player_status.distros);
 929   context.draw_text(white_text, _("COINS"), Vector(screen->w/2 - 16*5, 0),
 930       LAYER_FOREGROUND1);
 931   context.draw_text(gold_text, str, Vector(screen->w/2 + (16*5)/2, 0),
 932         LAYER_FOREGROUND1);
 933
 934   if (player_status.lives >= 5)
 935     {
 936       sprintf(str, "%dx", player_status.lives);
 937       context.draw_text(gold_text, str,
 938           Vector(screen->w - gold_text->get_text_width(str) - tux_life->w, 0),
 939           LAYER_FOREGROUND1);
 940       context.draw_surface(tux_life, Vector(screen->w -
 941             gold_text->get_text_width("9"), 0), LAYER_FOREGROUND1);
 942     }
 943   else
 944     {
 945       for(int i= 0; i < player_status.lives; ++i)
 946         context.draw_surface(tux_life,
 947             Vector(screen->w - tux_life->w*4 + (tux_life->w*i), 0),
 948             LAYER_FOREGROUND1);
 949     }
 950   context.draw_text(white_text, _("LIVES"),
 951       Vector(screen->w - white_text->get_text_width(_("LIVES")) - white_text->get_text_width("   99"), 0),
 952       LAYER_FOREGROUND1);
 953
 954   if (!tux->is_moving())
 955     {
 956       for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
 957         {
 958           if (i->x == tux->get_tile_pos().x &&
 959               i->y == tux->get_tile_pos().y)
 960             {
 961               if(!i->level_name.empty())
 962                 {
 963                 if(i->title == "")
 964                   get_level_title(*i);
 965
 966                 context.draw_text_center(white_text, i->title,
 967                     Vector(0, screen->h - white_text->get_height() - 30),
 968                     LAYER_FOREGROUND1);
 969                 }
 970
 971               /* Display a message in the map, if any as been selected */
 972               if(!i->display_map_message.empty())
 973                 context.draw_text_center(gold_text, i->display_map_message,
 974                     Vector(0, screen->h - white_text->get_height() - 60),
 975                     LAYER_FOREGROUND1);
 976               break;
 977             }
 978         }
 979     }
 980 }
 981
 982 void
 983 WorldMap::display()
 984 {
 985   Menu::set_current(0);
 986
 987   quit = false;
 988
 989   song = SoundManager::get()->load_music(datadir +  "/music/" + music);
 990   SoundManager::get()->play_music(song);
 991
 992   unsigned int last_update_time;
 993   unsigned int update_time;
 994
 995   last_update_time = update_time = Ticks::get();
 996
 997   DrawingContext context;
 998   while(!quit)
 999     {
1000       float delta = ((float)(update_time-last_update_time))/100.0;
1001
1002       delta *= 1.3f;
1003
1004       if (delta > 10.0f)
1005         delta = .3f;
1006
1007       last_update_time = update_time;
1008       update_time      = Ticks::get();
1009
1010       Vector tux_pos = tux->get_pos();
1011       if (1)
1012         {
1013           offset.x = -tux_pos.x + screen->w/2;
1014           offset.y = -tux_pos.y + screen->h/2;
1015
1016           if (offset.x > 0) offset.x = 0;
1017           if (offset.y > 0) offset.y = 0;
1018
1019           if (offset.x < screen->w - width*32) offset.x = screen->w - width*32;
1020           if (offset.y < screen->h - height*32) offset.y = screen->h - height*32;
1021         }
1022
1023       draw(context, offset);
1024       get_input();
1025       update(delta);
1026
1027       if(Menu::current())
1028         {
1029           Menu::current()->draw(context);
1030           mouse_cursor->draw(context);
1031         }
1032
1033       context.do_drawing();
1034
1035       SDL_Delay(20);
1036     }
1037 }
1038
1039 void
1040 WorldMap::savegame(const std::string& filename)
1041 {
1042   if(filename != "")
1043     return;
1044
1045   std::cout << "savegame: " << filename << std::endl;
1046   std::ofstream out(filename.c_str());
1047
1048   int nb_solved_levels = 0;
1049   for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
1050     {
1051       if (i->solved)
1052         ++nb_solved_levels;
1053     }
1054
1055   out << "(supertux-savegame\n"
1056       << "  (version 1)\n"
1057       << "  (title  \"" << name << " - " << nb_solved_levels << "/" << special_tiles.size() << "\")\n"
1058       << "  (map    \"" << map_filename << "\")\n"
1059       << "  (lives   " << player_status.lives << ")\n"
1060       << "  (score   " << player_status.score << ")\n"
1061       << "  (distros " << player_status.distros << ")\n"
1062       << "  (tux (x " << tux->get_tile_pos().x << ") (y " << tux->get_tile_pos().y << ")\n"
1063       << "       (back \"" << direction_to_string(tux->back_direction) << "\")\n"
1064       << "       (bonus \"" << bonus_to_string(player_status.bonus) <<  "\"))\n"
1065       << "  (levels\n";
1066
1067   for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
1068     {
1069       if (i->solved && !i->level_name.empty())
1070         {
1071           out << "     (level (name \"" << i->level_name << "\")\n"
1072               << "            (solved #t))\n";
1073         }
1074     }
1075
1076   out << "   )\n"
1077       << " )\n\n;; EOF ;;" << std::endl;
1078 }
1079
1080 void
1081 WorldMap::loadgame(const std::string& filename)
1082 {
1083   std::cout << "loadgame: " << filename << std::endl;
1084   savegame_file = filename;
1085   map_filename = "icyisland.stwm";
1086
1087   if (access(filename.c_str(), F_OK) != 0)
1088     {
1089     load_map();
1090     return;
1091     }
1092
1093   lisp_object_t* savegame = lisp_read_from_file(filename);
1094   if (!savegame)
1095     {
1096       std::cout << "WorldMap:loadgame: File not found: " << filename << std::endl;
1097       load_map();
1098       return;
1099     }
1100
1101   lisp_object_t* cur = savegame;
1102
1103   if (strcmp(lisp_symbol(lisp_car(cur)), "supertux-savegame") != 0)
1104     {
1105     load_map();
1106     return;
1107     }
1108
1109   cur = lisp_cdr(cur);
1110   LispReader reader(cur);
1111
1112   /* Get the Map filename and then load it before setting special_tile settings */
1113   reader.read_string("map", map_filename);
1114   load_map();
1115
1116   reader.read_int("lives", player_status.lives);
1117   reader.read_int("score", player_status.score);
1118   reader.read_int("distros", player_status.distros);
1119
1120   if (player_status.lives < 0)
1121     player_status.lives = START_LIVES;
1122
1123   lisp_object_t* tux_cur = 0;
1124   if (reader.read_lisp("tux", tux_cur))
1125     {
1126       Vector p;
1127       std::string back_str = "none";
1128       std::string bonus_str = "none";
1129
1130       LispReader tux_reader(tux_cur);
1131       tux_reader.read_float("x", p.x);
1132       tux_reader.read_float("y", p.y);
1133       tux_reader.read_string("back", back_str);
1134       tux_reader.read_string("bonus", bonus_str);
1135
1136       player_status.bonus = string_to_bonus(bonus_str);
1137       tux->back_direction = string_to_direction(back_str);
1138       tux->set_tile_pos(p);
1139     }
1140
1141   lisp_object_t* level_cur = 0;
1142   if (reader.read_lisp("levels", level_cur))
1143     {
1144       while(level_cur)
1145         {
1146           lisp_object_t* sym  = lisp_car(lisp_car(level_cur));
1147           lisp_object_t* data = lisp_cdr(lisp_car(level_cur));
1148
1149           if (strcmp(lisp_symbol(sym), "level") == 0)
1150             {
1151               std::string name;
1152               bool solved = false;
1153
1154               LispReader level_reader(data);
1155               level_reader.read_string("name", name, true);
1156               level_reader.read_bool("solved", solved);
1157
1158               for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
1159                 {
1160                   if (name == i->level_name)
1161                     i->solved = solved;
1162                 }
1163             }
1164
1165           level_cur = lisp_cdr(level_cur);
1166         }
1167     }
1168
1169   lisp_free(savegame);
1170 }
1171
1172 void
1173 WorldMap::loadmap(const std::string& filename)
1174 {
1175   savegame_file = "";
1176   map_filename = filename;
1177   load_map();
1178 }
1179
1180 } // namespace WorldMapNS
1181
1182 /* Local Variables: */
1183 /* mode:c++ */
1184 /* End: */
1185