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   moving = false;
 251 }
 252
 253 void
 254 Tux::action(float delta)
 255 {
 256   if (!moving)
 257     {
 258       if (input_direction != D_NONE)
 259         {
 260           WorldMap::Level* level = worldmap->at_level();
 261
 262           // We got a new direction, so lets start walking when possible
 263           Vector next_tile;
 264           if ((!level || level->solved)
 265               && worldmap->path_ok(input_direction, tile_pos, &next_tile))
 266             {
 267               tile_pos = next_tile;
 268               moving = true;
 269               direction = input_direction;
 270               back_direction = reverse_dir(direction);
 271             }
 272           else if (input_direction == back_direction)
 273             {
 274               std::cout << "Back triggered" << std::endl;
 275               moving = true;
 276               direction = input_direction;
 277               tile_pos = worldmap->get_next_tile(tile_pos, direction);
 278               back_direction = reverse_dir(direction);
 279             }
 280         }
 281     }
 282   else
 283     {
 284       // Let tux walk a few pixels (20 pixel/sec)
 285       offset += 20.0f * delta;
 286
 287       if (offset > 32)
 288         { // We reached the next tile, so we check what to do now
 289           offset -= 32;
 290
 291           if (worldmap->at(tile_pos)->stop || worldmap->at_level())
 292             {
 293               stop();
 294             }
 295           else
 296             {
 297               if (worldmap->at(tile_pos)->auto_walk)
 298                 { // Turn to a new direction
 299                   Tile* tile = worldmap->at(tile_pos);
 300                   Direction dir = D_NONE;
 301
 302                   if (tile->north && back_direction != D_NORTH)
 303                     dir = D_NORTH;
 304                   else if (tile->south && back_direction != D_SOUTH)
 305                     dir = D_SOUTH;
 306                   else if (tile->east && back_direction != D_EAST)
 307                     dir = D_EAST;
 308                   else if (tile->west && back_direction != D_WEST)
 309                     dir = D_WEST;
 310
 311                   if (dir != D_NONE)
 312                     {
 313                       direction = dir;
 314                       back_direction = reverse_dir(direction);
 315                     }
 316                   else
 317                     {
 318                       // Should never be reached if tiledata is good
 319                       stop();
 320                       return;
 321                     }
 322                 }
 323
 324               // Walk automatically to the next tile
 325               Vector next_tile;
 326               if (worldmap->path_ok(direction, tile_pos, &next_tile))
 327                 {
 328                   tile_pos = next_tile;
 329                 }
 330               else
 331                 {
 332                   puts("Tilemap data is buggy");
 333                   stop();
 334                 }
 335             }
 336         }
 337     }
 338 }
 339
 340 //---------------------------------------------------------------------------
 341 Tile::Tile()
 342 {
 343 }
 344
 345 Tile::~Tile()
 346 {
 347   delete sprite;
 348 }
 349
 350 //---------------------------------------------------------------------------
 351
 352 WorldMap::WorldMap()
 353 {
 354   tile_manager = new TileManager();
 355   //tux = new Tux(this);
 356
 357   width  = 20;
 358   height = 15;
 359
 360   start_x = 4;
 361   start_y = 5;
 362
 363   level_sprite = new Surface(datadir +  "/images/worldmap/levelmarker.png", true);
 364   leveldot_green = new Surface(datadir +  "/images/worldmap/leveldot_green.png", true);
 365   leveldot_red = new Surface(datadir +  "/images/worldmap/leveldot_red.png", true);
 366
 367   input_direction = D_NONE;
 368   enter_level = false;
 369
 370   name = "<no title>";
 371   music = "SALCON.MOD";
 372 }
 373
 374 WorldMap::~WorldMap()
 375 {
 376   delete tux;
 377   delete tile_manager;
 378
 379   delete level_sprite;
 380   delete leveldot_green;
 381   delete leveldot_red;
 382 }
 383
 384 void
 385 WorldMap::load_map()
 386 {
 387   lisp_object_t* root_obj = lisp_read_from_file(datadir + "/levels/worldmap/" + map_filename);
 388   if (!root_obj)
 389     Termination::abort("Couldn't load file", datadir + "/levels/worldmap/" + map_filename);
 390
 391   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap") == 0)
 392     {
 393       lisp_object_t* cur = lisp_cdr(root_obj);
 394
 395       while(!lisp_nil_p(cur))
 396         {
 397           lisp_object_t* element = lisp_car(cur);
 398
 399           if (strcmp(lisp_symbol(lisp_car(element)), "tilemap") == 0)
 400             {
 401               LispReader reader(lisp_cdr(element));
 402               reader.read_int("width",  width);
 403               reader.read_int("height", height);
 404               reader.read_int_vector("data", tilemap);
 405             }
 406           else if (strcmp(lisp_symbol(lisp_car(element)), "properties") == 0)
 407             {
 408               LispReader reader(lisp_cdr(element));
 409               reader.read_string("name", name, true);
 410               reader.read_string("music", music);
 411               reader.read_int("start_pos_x", start_x);
 412               reader.read_int("start_pos_y", start_y);
 413             }
 414           else if (strcmp(lisp_symbol(lisp_car(element)), "levels") == 0)
 415             {
 416               lisp_object_t* cur = lisp_cdr(element);
 417
 418               while(!lisp_nil_p(cur))
 419                 {
 420                   lisp_object_t* element = lisp_car(cur);
 421
 422                   if (strcmp(lisp_symbol(lisp_car(element)), "special-tile") == 0)
 423                     {
 424                       Level level;
 425                       LispReader reader(lisp_cdr(element));
 426                       level.solved = false;
 427
 428                       level.north = true;
 429                       level.east  = true;
 430                       level.south = true;
 431                       level.west  = true;
 432
 433                       reader.read_string("extro-filename", level.extro_filename);
 434                       reader.read_string("map-message", level.display_map_message);
 435                       reader.read_string("next-world", level.next_worldmap);
 436                       reader.read_string("level", level.name, true);
 437                       reader.read_int("x", level.x);
 438                       reader.read_int("y", level.y);
 439                       level.auto_path = true;
 440                       reader.read_bool("auto-path", &level.auto_path);
 441                       level.swap_x = level.swap_y = -1;
 442                       reader.read_int("swap-x", level.swap_x);
 443                       reader.read_int("swap-y", level.swap_y);
 444                       level.vertical_flip = false;
 445                       reader.read_bool("flip-level", level.vertical_flip);
 446                       level.quit_worldmap = false;
 447                       reader.read_bool("exit-game", level.quit_worldmap);
 448
 449                       levels.push_back(level);
 450                     }
 451
 452                   /* Kept for backward compability */
 453                   else if (strcmp(lisp_symbol(lisp_car(element)), "level") == 0)
 454                     {
 455                       Level level;
 456                       LispReader reader(lisp_cdr(element));
 457                       level.solved = false;
 458
 459                       level.north = true;
 460                       level.east  = true;
 461                       level.south = true;
 462                       level.west  = true;
 463
 464                       reader.read_string("extro-filename", level.extro_filename);
 465                       if(!level.extro_filename.empty())
 466                         level.quit_worldmap = true;
 467                       reader.read_string("name", level.name, true);
 468                       reader.read_int("x", level.x);
 469                       reader.read_int("y", level.y);
 470                       level.vertical_flip = false;
 471                       level.swap_x = level.swap_y = -1;
 472
 473                       levels.push_back(level);
 474                     }
 475
 476                   cur = lisp_cdr(cur);
 477                 }
 478             }
 479           else
 480             {
 481
 482             }
 483
 484           cur = lisp_cdr(cur);
 485         }
 486     }
 487
 488     lisp_free(root_obj);
 489     tux = new Tux(this);
 490 }
 491
 492 void WorldMap::get_level_title(Level& level)
 493 {
 494   /** get level's title */
 495   level.title = "<no title>";
 496
 497   LispReader* reader = LispReader::load(datadir + "/levels/" + level.name, "supertux-level");
 498   if(!reader)
 499     {
 500     std::cerr << "Error: Could not open level file. Ignoring...\n";
 501     return;
 502     }
 503
 504   reader->read_string("name", level.title, true);
 505   delete reader;
 506 }
 507
 508 void
 509 WorldMap::on_escape_press()
 510 {
 511   // Show or hide the menu
 512   if(!Menu::current())
 513     Menu::set_current(worldmap_menu);
 514   else
 515     Menu::set_current(0);
 516 }
 517
 518 void
 519 WorldMap::get_input()
 520 {
 521   enter_level = false;
 522   input_direction = D_NONE;
 523
 524   SDL_Event event;
 525   while (SDL_PollEvent(&event))
 526     {
 527       if (Menu::current())
 528         {
 529           Menu::current()->event(event);
 530         }
 531       else
 532         {
 533           switch(event.type)
 534             {
 535             case SDL_QUIT:
 536               Termination::abort("Received window close", "");
 537               break;
 538
 539             case SDL_KEYDOWN:
 540               switch(event.key.keysym.sym)
 541                 {
 542                 case SDLK_ESCAPE:
 543                   on_escape_press();
 544                   break;
 545                 case SDLK_LCTRL:
 546                 case SDLK_RETURN:
 547                   enter_level = true;
 548                   break;
 549                 default:
 550                   break;
 551                 }
 552               break;
 553
 554             case SDL_JOYAXISMOTION:
 555               if (event.jaxis.axis == joystick_keymap.x_axis)
 556                 {
 557                   if (event.jaxis.value < -joystick_keymap.dead_zone)
 558                     input_direction = D_WEST;
 559                   else if (event.jaxis.value > joystick_keymap.dead_zone)
 560                     input_direction = D_EAST;
 561                 }
 562               else if (event.jaxis.axis == joystick_keymap.y_axis)
 563                 {
 564                   if (event.jaxis.value > joystick_keymap.dead_zone)
 565                     input_direction = D_SOUTH;
 566                   else if (event.jaxis.value < -joystick_keymap.dead_zone)
 567                     input_direction = D_NORTH;
 568                 }
 569               break;
 570
 571             case SDL_JOYBUTTONDOWN:
 572               if (event.jbutton.button == joystick_keymap.b_button)
 573                 enter_level = true;
 574               else if (event.jbutton.button == joystick_keymap.start_button)
 575                 on_escape_press();
 576               break;
 577
 578             default:
 579               break;
 580             }
 581         }
 582     }
 583
 584   if (!Menu::current())
 585     {
 586       Uint8 *keystate = SDL_GetKeyState(NULL);
 587
 588       if (keystate[SDLK_LEFT])
 589         input_direction = D_WEST;
 590       else if (keystate[SDLK_RIGHT])
 591         input_direction = D_EAST;
 592       else if (keystate[SDLK_UP])
 593         input_direction = D_NORTH;
 594       else if (keystate[SDLK_DOWN])
 595         input_direction = D_SOUTH;
 596     }
 597 }
 598
 599 Vector
 600 WorldMap::get_next_tile(Vector pos, Direction direction)
 601 {
 602   switch(direction)
 603     {
 604     case D_WEST:
 605       pos.x -= 1;
 606       break;
 607     case D_EAST:
 608       pos.x += 1;
 609       break;
 610     case D_NORTH:
 611       pos.y -= 1;
 612       break;
 613     case D_SOUTH:
 614       pos.y += 1;
 615       break;
 616     case D_NONE:
 617       break;
 618     }
 619   return pos;
 620 }
 621
 622 bool
 623 WorldMap::path_ok(Direction direction, Vector old_pos, Vector* new_pos)
 624 {
 625   *new_pos = get_next_tile(old_pos, direction);
 626
 627   if (!(new_pos->x >= 0 && new_pos->x < width
 628         && new_pos->y >= 0 && new_pos->y < height))
 629     { // New position is outsite the tilemap
 630       return false;
 631     }
 632   else
 633     { // Check if we the tile allows us to go to new_pos
 634       switch(direction)
 635         {
 636         case D_WEST:
 637           return (at(old_pos)->west && at(*new_pos)->east);
 638
 639         case D_EAST:
 640           return (at(old_pos)->east && at(*new_pos)->west);
 641
 642         case D_NORTH:
 643           return (at(old_pos)->north && at(*new_pos)->south);
 644
 645         case D_SOUTH:
 646           return (at(old_pos)->south && at(*new_pos)->north);
 647
 648         case D_NONE:
 649           assert(!"path_ok() can't work if direction is NONE");
 650         }
 651       return false;
 652     }
 653 }
 654
 655 void
 656 WorldMap::update(float delta)
 657 {
 658   if (enter_level && !tux->is_moving())
 659     {
 660       bool level_finished = true;
 661       Level* level = at_level();
 662       if (!level)
 663         {
 664         std::cout << "Nothing to enter at: "
 665           << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << std::endl;
 666         return;
 667         }
 668
 669
 670       if(!level->name.empty())
 671         {
 672           if (level->x == tux->get_tile_pos().x &&
 673               level->y == tux->get_tile_pos().y)
 674             {
 675               PlayerStatus old_player_status = player_status;
 676
 677               std::cout << "Enter the current level: " << level->name << std::endl;
 678               // do a shriking fade to the level
 679               shrink_fade(Vector((level->x*32 + 16 + offset.x),(level->y*32 + 16
 680                       + offset.y)), 500);
 681               GameSession session(datadir +  "/levels/" + level->name,
 682                                   ST_GL_LOAD_LEVEL_FILE, level->vertical_flip);
 683
 684               switch (session.run())
 685                 {
 686                 case GameSession::ES_LEVEL_FINISHED:
 687                   {
 688                     level_finished = true;
 689                     bool old_level_state = level->solved;
 690                     level->solved = true;
 691
 692                     if (session.get_current_sector()->player->got_power !=
 693                           session.get_current_sector()->player->NONE_POWER)
 694                       player_status.bonus = PlayerStatus::FLOWER_BONUS;
 695                     else if (session.get_current_sector()->player->size == BIG)
 696                       player_status.bonus = PlayerStatus::GROWUP_BONUS;
 697                     else
 698                       player_status.bonus = PlayerStatus::NO_BONUS;
 699
 700                     if (old_level_state != level->solved && level->auto_path)
 701                       { // Try to detect the next direction to which we should walk
 702                         // FIXME: Mostly a hack
 703                         Direction dir = D_NONE;
 704
 705                         Tile* tile = at(tux->get_tile_pos());
 706
 707                         if (tile->north && tux->back_direction != D_NORTH)
 708                           dir = D_NORTH;
 709                         else if (tile->south && tux->back_direction != D_SOUTH)
 710                           dir = D_SOUTH;
 711                         else if (tile->east && tux->back_direction != D_EAST)
 712                           dir = D_EAST;
 713                         else if (tile->west && tux->back_direction != D_WEST)
 714                           dir = D_WEST;
 715
 716                         if (dir != D_NONE)
 717                           {
 718                             tux->set_direction(dir);
 719                             //tux->update(delta);
 720                           }
 721
 722                         std::cout << "Walk to dir: " << dir << std::endl;
 723                       }
 724                   }
 725
 726                   break;
 727                 case GameSession::ES_LEVEL_ABORT:
 728                   level_finished = false;
 729                   /* In case the player's abort the level, keep it using the old
 730                       status. But the minimum lives and no bonus. */
 731                   player_status.score = old_player_status.score;
 732                   player_status.distros = old_player_status.distros;
 733                   player_status.lives = std::min(old_player_status.lives, player_status.lives);
 734                   player_status.bonus = player_status.NO_BONUS;
 735
 736                   break;
 737                 case GameSession::ES_GAME_OVER:
 738                   {
 739                   level_finished = false;
 740                   /* draw an end screen */
 741                   /* in the future, this should make a dialog a la SuperMario, asking
 742                   if the player wants to restart the world map with no score and from
 743                   level 1 */
 744                   char str[80];
 745
 746                   DrawingContext context;
 747                   context.draw_gradient(Color (200,240,220), Color(200,200,220),
 748                       LAYER_BACKGROUND0);
 749
 750                   context.draw_text_center(blue_text, _("GAMEOVER"),
 751                       Vector(0, 200), LAYER_FOREGROUND1);
 752
 753                   sprintf(str, _("SCORE: %d"), player_status.score);
 754                   context.draw_text_center(gold_text, str,
 755                       Vector(0, 230), LAYER_FOREGROUND1);
 756
 757                   sprintf(str, _("COINS: %d"), player_status.distros);
 758                   context.draw_text_center(gold_text, str,
 759                       Vector(0, screen->w - 32), LAYER_FOREGROUND1);
 760
 761                   context.do_drawing();
 762
 763                   SDL_Event event;
 764                   wait_for_event(event,2000,5000,true);
 765
 766                   quit = true;
 767                   player_status.reset();
 768                   break;
 769                   }
 770                 case GameSession::ES_NONE:
 771                   assert(false);
 772                   // Should never be reached
 773                   break;
 774                 }
 775
 776               SoundManager::get()->play_music(song);
 777               Menu::set_current(0);
 778               if (!savegame_file.empty())
 779                 savegame(savegame_file);
 780             }
 781         }
 782       /* The porpose of the next checking is that if the player lost
 783          the level (in case there is one), don't show anything */
 784       if(level_finished)
 785         {
 786         if (!level->extro_filename.empty())
 787           {
 788           // Display a text file
 789           display_text_file(level->extro_filename, SCROLL_SPEED_MESSAGE, white_big_text , white_text, white_small_text, blue_text );
 790           }
 791         if (level->swap_x != -1 && level->swap_y != -1)
 792           {
 793           // TODO: add an effect, like a camera scrolling, or at least, a fading
 794           tux->set_tile_pos(Vector(level->swap_x, level->swap_y));
 795           }
 796         if (!level->next_worldmap.empty())
 797           {
 798           // Load given worldmap
 799           loadmap(level->next_worldmap);
 800           }
 801         if (level->quit_worldmap)
 802           quit = true;
 803         }
 804     }
 805   else
 806     {
 807       tux->action(delta);
 808       tux->set_direction(input_direction);
 809     }
 810
 811   Menu* menu = Menu::current();
 812   if(menu)
 813     {
 814       menu->action();
 815
 816       if(menu == worldmap_menu)
 817         {
 818           switch (worldmap_menu->check())
 819             {
 820             case MNID_RETURNWORLDMAP: // Return to game
 821               break;
 822             case MNID_QUITWORLDMAP: // Quit Worldmap
 823               quit = true;
 824               break;
 825             }
 826         }
 827       else if(menu == options_menu)
 828         {
 829           process_options_menu();
 830         }
 831     }
 832 }
 833
 834 Tile*
 835 WorldMap::at(Vector p)
 836 {
 837   assert(p.x >= 0
 838          && p.x < width
 839          && p.y >= 0
 840          && p.y < height);
 841
 842   int x = int(p.x);
 843   int y = int(p.y);
 844   return tile_manager->get(tilemap[width * y + x]);
 845 }
 846
 847 WorldMap::Level*
 848 WorldMap::at_level()
 849 {
 850   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 851     {
 852       if (i->x == tux->get_tile_pos().x &&
 853           i->y == tux->get_tile_pos().y)
 854         return &*i;
 855     }
 856
 857   return 0;
 858 }
 859
 860
 861 void
 862 WorldMap::draw(DrawingContext& context, const Vector& offset)
 863 {
 864   for(int y = 0; y < height; ++y)
 865     for(int x = 0; x < width; ++x)
 866       {
 867         Tile* tile = at(Vector(x, y));
 868         context.draw_surface(tile->sprite,
 869             Vector(x*32 + offset.x, y*32 + offset.y), LAYER_TILES);
 870       }
 871
 872   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 873     {
 874       if(i->name.empty())
 875         continue;
 876
 877       if (i->solved)
 878         context.draw_surface(leveldot_green,
 879             Vector(i->x*32 + offset.x, i->y*32 + offset.y), LAYER_TILES+1);
 880       else
 881         context.draw_surface(leveldot_red,
 882             Vector(i->x*32 + offset.x, i->y*32 + offset.y), LAYER_TILES+1);
 883     }
 884
 885   tux->draw(context, offset);
 886   draw_status(context);
 887 }
 888
 889 void
 890 WorldMap::draw_status(DrawingContext& context)
 891 {
 892   char str[80];
 893   sprintf(str, " %d", player_status.score);
 894
 895   context.draw_text(white_text, _("SCORE"), Vector(0, 0), LAYER_FOREGROUND1);
 896   context.draw_text(gold_text, str, Vector(96, 0), LAYER_FOREGROUND1);
 897
 898   sprintf(str, "%d", player_status.distros);
 899   context.draw_text(white_text, _("COINS"), Vector(screen->w/2 - 16*5, 0),
 900       LAYER_FOREGROUND1);
 901   context.draw_text(gold_text, str, Vector(screen->w/2 + (16*5)/2, 0),
 902         LAYER_FOREGROUND1);
 903
 904   if (player_status.lives >= 5)
 905     {
 906       sprintf(str, "%dx", player_status.lives);
 907       context.draw_text(gold_text, str,
 908           Vector(screen->w - gold_text->get_text_width(str) - tux_life->w, 0),
 909           LAYER_FOREGROUND1);
 910       context.draw_surface(tux_life, Vector(screen->w -
 911             gold_text->get_text_width("9"), 0), LAYER_FOREGROUND1);
 912     }
 913   else
 914     {
 915       for(int i= 0; i < player_status.lives; ++i)
 916         context.draw_surface(tux_life,
 917             Vector(screen->w - tux_life->w*4 + (tux_life->w*i), 0),
 918             LAYER_FOREGROUND1);
 919     }
 920   context.draw_text(white_text, _("LIVES"),
 921       Vector(screen->w - white_text->get_text_width(_("LIVES")) - white_text->get_text_width("   99"), 0),
 922       LAYER_FOREGROUND1);
 923
 924   if (!tux->is_moving())
 925     {
 926       for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 927         {
 928           if (i->x == tux->get_tile_pos().x &&
 929               i->y == tux->get_tile_pos().y)
 930             {
 931               if(!i->name.empty())
 932                 {
 933                 if(i->title == "")
 934                   get_level_title(*i);
 935
 936                 context.draw_text_center(white_text, i->title,
 937                     Vector(0, screen->h - white_text->get_height() - 30),
 938                     LAYER_FOREGROUND1);
 939                 }
 940
 941               /* Display a message in the map, if any as been selected */
 942               if(!i->display_map_message.empty())
 943                 context.draw_text_center(gold_text, i->display_map_message,
 944                     Vector(0, screen->h - white_text->get_height() - 60),
 945                     LAYER_FOREGROUND1);
 946               break;
 947             }
 948         }
 949     }
 950 }
 951
 952 void
 953 WorldMap::display()
 954 {
 955   Menu::set_current(0);
 956
 957   quit = false;
 958
 959   song = SoundManager::get()->load_music(datadir +  "/music/" + music);
 960   SoundManager::get()->play_music(song);
 961
 962   unsigned int last_update_time;
 963   unsigned int update_time;
 964
 965   last_update_time = update_time = Ticks::get();
 966
 967   DrawingContext context;
 968   while(!quit)
 969     {
 970       float delta = ((float)(update_time-last_update_time))/100.0;
 971
 972       delta *= 1.3f;
 973
 974       if (delta > 10.0f)
 975         delta = .3f;
 976
 977       last_update_time = update_time;
 978       update_time      = Ticks::get();
 979
 980       Vector tux_pos = tux->get_pos();
 981       if (1)
 982         {
 983           offset.x = -tux_pos.x + screen->w/2;
 984           offset.y = -tux_pos.y + screen->h/2;
 985
 986           if (offset.x > 0) offset.x = 0;
 987           if (offset.y > 0) offset.y = 0;
 988
 989           if (offset.x < screen->w - width*32) offset.x = screen->w - width*32;
 990           if (offset.y < screen->h - height*32) offset.y = screen->h - height*32;
 991         }
 992
 993       draw(context, offset);
 994       get_input();
 995       update(delta);
 996
 997       if(Menu::current())
 998         {
 999           Menu::current()->draw(context);
1000           mouse_cursor->draw(context);
1001         }
1002
1003       context.do_drawing();
1004
1005       SDL_Delay(20);
1006     }
1007 }
1008
1009 void
1010 WorldMap::savegame(const std::string& filename)
1011 {
1012   if(filename != "")
1013     return;
1014
1015   std::cout << "savegame: " << filename << std::endl;
1016   std::ofstream out(filename.c_str());
1017
1018   int nb_solved_levels = 0;
1019   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1020     {
1021       if (i->solved)
1022         ++nb_solved_levels;
1023     }
1024
1025   out << "(supertux-savegame\n"
1026       << "  (version 1)\n"
1027       << "  (title  \"" << name << " - " << nb_solved_levels << "/" << levels.size() << "\")\n"
1028       << "  (map    \"" << map_filename << "\")\n"
1029       << "  (lives   " << player_status.lives << ")\n"
1030       << "  (score   " << player_status.score << ")\n"
1031       << "  (distros " << player_status.distros << ")\n"
1032       << "  (tux (x " << tux->get_tile_pos().x << ") (y " << tux->get_tile_pos().y << ")\n"
1033       << "       (back \"" << direction_to_string(tux->back_direction) << "\")\n"
1034       << "       (bonus \"" << bonus_to_string(player_status.bonus) <<  "\"))\n"
1035       << "  (levels\n";
1036
1037   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1038     {
1039       if (i->solved)
1040         {
1041           out << "     (level (name \"" << i->name << "\")\n"
1042               << "            (solved #t))\n";
1043         }
1044     }
1045
1046   out << "   )\n"
1047       << " )\n\n;; EOF ;;" << std::endl;
1048 }
1049
1050 void
1051 WorldMap::loadgame(const std::string& filename)
1052 {
1053   std::cout << "loadgame: " << filename << std::endl;
1054   savegame_file = filename;
1055   map_filename = "icyisland.stwm";
1056
1057   if (access(filename.c_str(), F_OK) != 0)
1058     {
1059     load_map();
1060     return;
1061     }
1062
1063   lisp_object_t* savegame = lisp_read_from_file(filename);
1064   if (!savegame)
1065     {
1066       std::cout << "WorldMap:loadgame: File not found: " << filename << std::endl;
1067       load_map();
1068       return;
1069     }
1070
1071   lisp_object_t* cur = savegame;
1072
1073   if (strcmp(lisp_symbol(lisp_car(cur)), "supertux-savegame") != 0)
1074     {
1075     load_map();
1076     return;
1077     }
1078
1079   cur = lisp_cdr(cur);
1080   LispReader reader(cur);
1081
1082   /* Get the Map filename and then load it before setting level settings */
1083   reader.read_string("map", map_filename);
1084   load_map();
1085
1086   reader.read_int("lives", player_status.lives);
1087   reader.read_int("score", player_status.score);
1088   reader.read_int("distros", player_status.distros);
1089
1090   if (player_status.lives < 0)
1091     player_status.lives = START_LIVES;
1092
1093   lisp_object_t* tux_cur = 0;
1094   if (reader.read_lisp("tux", tux_cur))
1095     {
1096       Vector p;
1097       std::string back_str = "none";
1098       std::string bonus_str = "none";
1099
1100       LispReader tux_reader(tux_cur);
1101       tux_reader.read_float("x", p.x);
1102       tux_reader.read_float("y", p.y);
1103       tux_reader.read_string("back", back_str);
1104       tux_reader.read_string("bonus", bonus_str);
1105
1106       player_status.bonus = string_to_bonus(bonus_str);
1107       tux->back_direction = string_to_direction(back_str);
1108       tux->set_tile_pos(p);
1109     }
1110
1111   lisp_object_t* level_cur = 0;
1112   if (reader.read_lisp("levels", level_cur))
1113     {
1114       while(level_cur)
1115         {
1116           lisp_object_t* sym  = lisp_car(lisp_car(level_cur));
1117           lisp_object_t* data = lisp_cdr(lisp_car(level_cur));
1118
1119           if (strcmp(lisp_symbol(sym), "level") == 0)
1120             {
1121               std::string name;
1122               bool solved = false;
1123
1124               LispReader level_reader(data);
1125               level_reader.read_string("name", name, true);
1126               level_reader.read_bool("solved", solved);
1127
1128               for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1129                 {
1130                   if (name == i->name)
1131                     i->solved = solved;
1132                 }
1133             }
1134
1135           level_cur = lisp_cdr(level_cur);
1136         }
1137     }
1138
1139   lisp_free(savegame);
1140 }
1141
1142 void
1143 WorldMap::loadmap(const std::string& filename)
1144 {
1145   savegame_file = "";
1146   map_filename = filename;
1147   load_map();
1148 }
1149
1150 } // namespace WorldMapNS
1151
1152 /* Local Variables: */
1153 /* mode:c++ */
1154 /* End: */
1155