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 "globals.h"
  27 #include "screen/surface.h"
  28 #include "screen/screen.h"
  29 #include "screen/drawing_context.h"
  30 #include "lispreader.h"
  31 #include "gameloop.h"
  32 #include "setup.h"
  33 #include "sector.h"
  34 #include "worldmap.h"
  35 #include "sound_manager.h"
  36 #include "resources.h"
  37 #include "gettext.h"
  38
  39 namespace WorldMapNS {
  40
  41 Direction reverse_dir(Direction direction)
  42 {
  43   switch(direction)
  44     {
  45     case D_WEST:
  46       return D_EAST;
  47     case D_EAST:
  48       return D_WEST;
  49     case D_NORTH:
  50       return D_SOUTH;
  51     case D_SOUTH:
  52       return D_NORTH;
  53     case D_NONE:
  54       return D_NONE;
  55     }
  56   return D_NONE;
  57 }
  58
  59 std::string
  60 direction_to_string(Direction direction)
  61 {
  62   switch(direction)
  63     {
  64     case D_WEST:
  65       return "west";
  66     case D_EAST:
  67       return "east";
  68     case D_NORTH:
  69       return "north";
  70     case D_SOUTH:
  71       return "south";
  72     default:
  73       return "none";
  74     }
  75 }
  76
  77 Direction
  78 string_to_direction(const std::string& directory)
  79 {
  80   if (directory == "west")
  81     return D_WEST;
  82   else if (directory == "east")
  83     return D_EAST;
  84   else if (directory == "north")
  85     return D_NORTH;
  86   else if (directory == "south")
  87     return D_SOUTH;
  88   else
  89     return D_NONE;
  90 }
  91
  92 TileManager::TileManager()
  93 {
  94   std::string stwt_filename = datadir +  "/images/worldmap/antarctica.stwt";
  95   lisp_object_t* root_obj = lisp_read_from_file(stwt_filename);
  96
  97   if (!root_obj)
  98     st_abort("Couldn't load file", stwt_filename);
  99
 100   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap-tiles") == 0)
 101     {
 102       lisp_object_t* cur = lisp_cdr(root_obj);
 103
 104       while(!lisp_nil_p(cur))
 105         {
 106           lisp_object_t* element = lisp_car(cur);
 107
 108           if (strcmp(lisp_symbol(lisp_car(element)), "tile") == 0)
 109             {
 110               int id = 0;
 111               std::string filename = "<invalid>";
 112
 113               Tile* tile = new Tile;
 114               tile->north = true;
 115               tile->east  = true;
 116               tile->south = true;
 117               tile->west  = true;
 118               tile->stop  = true;
 119               tile->auto_walk = false;
 120
 121               LispReader reader(lisp_cdr(element));
 122               reader.read_int("id", id);
 123               reader.read_bool("north", tile->north);
 124               reader.read_bool("south", tile->south);
 125               reader.read_bool("west",  tile->west);
 126               reader.read_bool("east",  tile->east);
 127               reader.read_bool("stop",  tile->stop);
 128               reader.read_bool("auto-walk",  tile->auto_walk);
 129               reader.read_string("image", filename);
 130
 131               tile->sprite = new Surface(
 132                            datadir +  "/images/worldmap/" + filename,
 133                            true);
 134
 135               if (id >= int(tiles.size()))
 136                 tiles.resize(id+1);
 137
 138               tiles[id] = tile;
 139             }
 140           else
 141             {
 142               puts("Unhandled symbol");
 143             }
 144
 145           cur = lisp_cdr(cur);
 146         }
 147     }
 148   else
 149     {
 150       assert(0);
 151     }
 152
 153   lisp_free(root_obj);
 154 }
 155
 156 TileManager::~TileManager()
 157 {
 158   for(std::vector<Tile*>::iterator i = tiles.begin(); i != tiles.end(); ++i)
 159     delete *i;
 160 }
 161
 162 Tile*
 163 TileManager::get(int i)
 164 {
 165   assert(i >=0 && i < int(tiles.size()));
 166   return tiles[i];
 167 }
 168
 169 //---------------------------------------------------------------------------
 170
 171 Tux::Tux(WorldMap* worldmap_)
 172   : worldmap(worldmap_)
 173 {
 174   largetux_sprite = new Surface(datadir +  "/images/worldmap/tux.png", true);
 175   firetux_sprite = new Surface(datadir +  "/images/worldmap/firetux.png", true);
 176   smalltux_sprite = new Surface(datadir +  "/images/worldmap/smalltux.png", true);
 177
 178   offset = 0;
 179   moving = false;
 180   tile_pos.x = worldmap->get_start_x();
 181   tile_pos.y = worldmap->get_start_y();
 182   direction = D_NONE;
 183   input_direction = D_NONE;
 184 }
 185
 186 Tux::~Tux()
 187 {
 188   delete smalltux_sprite;
 189   delete firetux_sprite;
 190   delete largetux_sprite;
 191 }
 192
 193 void
 194 Tux::draw(DrawingContext& context, const Vector& offset)
 195 {
 196   Vector pos = get_pos();
 197   switch (player_status.bonus)
 198     {
 199     case PlayerStatus::GROWUP_BONUS:
 200       context.draw_surface(largetux_sprite,
 201           Vector(pos.x + offset.x, pos.y + offset.y - 10), LAYER_OBJECTS);
 202       break;
 203     case PlayerStatus::FLOWER_BONUS:
 204       context.draw_surface(firetux_sprite,
 205           Vector(pos.x + offset.x, pos.y + offset.y - 10), LAYER_OBJECTS);
 206       break;
 207     case PlayerStatus::NO_BONUS:
 208       context.draw_surface(smalltux_sprite,
 209           Vector(pos.x + offset.x, pos.y + offset.y - 10), LAYER_OBJECTS);
 210       break;
 211     }
 212 }
 213
 214
 215 Vector
 216 Tux::get_pos()
 217 {
 218   float x = tile_pos.x * 32;
 219   float y = tile_pos.y * 32;
 220
 221   switch(direction)
 222     {
 223     case D_WEST:
 224       x -= offset - 32;
 225       break;
 226     case D_EAST:
 227       x += offset - 32;
 228       break;
 229     case D_NORTH:
 230       y -= offset - 32;
 231       break;
 232     case D_SOUTH:
 233       y += offset - 32;
 234       break;
 235     case D_NONE:
 236       break;
 237     }
 238
 239   return Vector((int)x, (int)y);
 240 }
 241
 242 void
 243 Tux::stop()
 244 {
 245   offset = 0;
 246   direction = D_NONE;
 247   moving = false;
 248 }
 249
 250 void
 251 Tux::action(float delta)
 252 {
 253   if (!moving)
 254     {
 255       if (input_direction != D_NONE)
 256         {
 257           WorldMap::Level* level = worldmap->at_level();
 258
 259           // We got a new direction, so lets start walking when possible
 260           Vector next_tile;
 261           if ((!level || level->solved)
 262               && worldmap->path_ok(input_direction, tile_pos, &next_tile))
 263             {
 264               tile_pos = next_tile;
 265               moving = true;
 266               direction = input_direction;
 267               back_direction = reverse_dir(direction);
 268             }
 269           else if (input_direction == back_direction)
 270             {
 271               std::cout << "Back triggered" << std::endl;
 272               moving = true;
 273               direction = input_direction;
 274               tile_pos = worldmap->get_next_tile(tile_pos, direction);
 275               back_direction = reverse_dir(direction);
 276             }
 277         }
 278     }
 279   else
 280     {
 281       // Let tux walk a few pixels (20 pixel/sec)
 282       offset += 20.0f * delta;
 283
 284       if (offset > 32)
 285         { // We reached the next tile, so we check what to do now
 286           offset -= 32;
 287
 288           if (worldmap->at(tile_pos)->stop || worldmap->at_level())
 289             {
 290               stop();
 291             }
 292           else
 293             {
 294               if (worldmap->at(tile_pos)->auto_walk)
 295                 { // Turn to a new direction
 296                   Tile* tile = worldmap->at(tile_pos);
 297                   Direction dir = D_NONE;
 298
 299                   if (tile->north && back_direction != D_NORTH)
 300                     dir = D_NORTH;
 301                   else if (tile->south && back_direction != D_SOUTH)
 302                     dir = D_SOUTH;
 303                   else if (tile->east && back_direction != D_EAST)
 304                     dir = D_EAST;
 305                   else if (tile->west && back_direction != D_WEST)
 306                     dir = D_WEST;
 307
 308                   if (dir != D_NONE)
 309                     {
 310                       direction = dir;
 311                       back_direction = reverse_dir(direction);
 312                     }
 313                   else
 314                     {
 315                       // Should never be reached if tiledata is good
 316                       stop();
 317                       return;
 318                     }
 319                 }
 320
 321               // Walk automatically to the next tile
 322               Vector next_tile;
 323               if (worldmap->path_ok(direction, tile_pos, &next_tile))
 324                 {
 325                   tile_pos = next_tile;
 326                 }
 327               else
 328                 {
 329                   puts("Tilemap data is buggy");
 330                   stop();
 331                 }
 332             }
 333         }
 334     }
 335 }
 336
 337 //---------------------------------------------------------------------------
 338 Tile::Tile()
 339 {
 340 }
 341
 342 Tile::~Tile()
 343 {
 344   delete sprite;
 345 }
 346
 347 //---------------------------------------------------------------------------
 348
 349 WorldMap::WorldMap()
 350 {
 351   tile_manager = new TileManager();
 352   //tux = new Tux(this);
 353
 354   width  = 20;
 355   height = 15;
 356
 357   start_x = 4;
 358   start_y = 5;
 359
 360   level_sprite = new Surface(datadir +  "/images/worldmap/levelmarker.png", true);
 361   leveldot_green = new Surface(datadir +  "/images/worldmap/leveldot_green.png", true);
 362   leveldot_red = new Surface(datadir +  "/images/worldmap/leveldot_red.png", true);
 363
 364   input_direction = D_NONE;
 365   enter_level = false;
 366
 367   name = "<no title>";
 368   music = "SALCON.MOD";
 369 }
 370
 371 WorldMap::~WorldMap()
 372 {
 373   delete tux;
 374   delete tile_manager;
 375
 376   delete level_sprite;
 377   delete leveldot_green;
 378   delete leveldot_red;
 379 }
 380
 381 void
 382 WorldMap::load_map()
 383 {
 384   lisp_object_t* root_obj = lisp_read_from_file(datadir + "/levels/worldmap/" + map_filename);
 385   if (!root_obj)
 386     st_abort("Couldn't load file", datadir + "/levels/worldmap/" + map_filename);
 387
 388   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap") == 0)
 389     {
 390       lisp_object_t* cur = lisp_cdr(root_obj);
 391
 392       while(!lisp_nil_p(cur))
 393         {
 394           lisp_object_t* element = lisp_car(cur);
 395
 396           if (strcmp(lisp_symbol(lisp_car(element)), "tilemap") == 0)
 397             {
 398               LispReader reader(lisp_cdr(element));
 399               reader.read_int("width",  width);
 400               reader.read_int("height", height);
 401               reader.read_int_vector("data", tilemap);
 402             }
 403           else if (strcmp(lisp_symbol(lisp_car(element)), "properties") == 0)
 404             {
 405               LispReader reader(lisp_cdr(element));
 406               reader.read_string("name", name, true);
 407               reader.read_string("music", music);
 408               reader.read_int("start_pos_x", start_x);
 409               reader.read_int("start_pos_y", start_y);
 410             }
 411           else if (strcmp(lisp_symbol(lisp_car(element)), "levels") == 0)
 412             {
 413               lisp_object_t* cur = lisp_cdr(element);
 414
 415               while(!lisp_nil_p(cur))
 416                 {
 417                   lisp_object_t* element = lisp_car(cur);
 418
 419                   if (strcmp(lisp_symbol(lisp_car(element)), "special-tile") == 0)
 420                     {
 421                       Level level;
 422                       LispReader reader(lisp_cdr(element));
 423                       level.solved = false;
 424
 425                       level.north = true;
 426                       level.east  = true;
 427                       level.south = true;
 428                       level.west  = true;
 429
 430                       reader.read_string("extro-filename", level.extro_filename);
 431                       reader.read_string("map-message", level.display_map_message);
 432                       reader.read_string("next-world", level.next_worldmap);
 433                       reader.read_string("level", level.name, true);
 434                       reader.read_int("x", level.x);
 435                       reader.read_int("y", level.y);
 436                       level.swap_x = level.swap_y = -1;
 437                       reader.read_int("swap-x", level.swap_x);
 438                       reader.read_int("swap-y", level.swap_y);
 439                       level.vertical_flip = false;
 440                       reader.read_bool("flip-level", level.vertical_flip);
 441                       level.quit_worldmap = false;
 442                       reader.read_bool("exit-game", level.quit_worldmap);
 443
 444                       levels.push_back(level);
 445                     }
 446
 447                   /* Kept for backward compability */
 448                   else if (strcmp(lisp_symbol(lisp_car(element)), "level") == 0)
 449                     {
 450                       Level level;
 451                       LispReader reader(lisp_cdr(element));
 452                       level.solved = false;
 453
 454                       level.north = true;
 455                       level.east  = true;
 456                       level.south = true;
 457                       level.west  = true;
 458
 459                       reader.read_string("extro-filename", level.extro_filename);
 460                       if(!level.extro_filename.empty())
 461                         level.quit_worldmap = true;
 462                       reader.read_string("name", level.name, true);
 463                       reader.read_int("x", level.x);
 464                       reader.read_int("y", level.y);
 465                       level.vertical_flip = false;
 466                       level.swap_x = level.swap_y = -1;
 467
 468                       levels.push_back(level);
 469                     }
 470
 471                   cur = lisp_cdr(cur);
 472                 }
 473             }
 474           else
 475             {
 476
 477             }
 478
 479           cur = lisp_cdr(cur);
 480         }
 481     }
 482
 483     lisp_free(root_obj);
 484     tux = new Tux(this);
 485 }
 486
 487 void WorldMap::get_level_title(Level& level)
 488 {
 489   /** get level's title */
 490   level.title = "<no title>";
 491
 492   LispReader* reader = LispReader::load(datadir + "/levels/" + level.name, "supertux-level");
 493   if(!reader)
 494     {
 495     std::cerr << "Error: Could not open level file. Ignoring...\n";
 496     return;
 497     }
 498
 499   reader->read_string("name", level.title, true);
 500   delete reader;
 501 }
 502
 503 void
 504 WorldMap::on_escape_press()
 505 {
 506   // Show or hide the menu
 507   if(!Menu::current())
 508     Menu::set_current(worldmap_menu);
 509   else
 510     Menu::set_current(0);
 511 }
 512
 513 void
 514 WorldMap::get_input()
 515 {
 516   enter_level = false;
 517   input_direction = D_NONE;
 518
 519   SDL_Event event;
 520   while (SDL_PollEvent(&event))
 521     {
 522       if (Menu::current())
 523         {
 524           Menu::current()->event(event);
 525         }
 526       else
 527         {
 528           switch(event.type)
 529             {
 530             case SDL_QUIT:
 531               st_abort("Received window close", "");
 532               break;
 533
 534             case SDL_KEYDOWN:
 535               switch(event.key.keysym.sym)
 536                 {
 537                 case SDLK_ESCAPE:
 538                   on_escape_press();
 539                   break;
 540                 case SDLK_LCTRL:
 541                 case SDLK_RETURN:
 542                   enter_level = true;
 543                   break;
 544                 default:
 545                   break;
 546                 }
 547               break;
 548
 549             case SDL_JOYAXISMOTION:
 550               if (event.jaxis.axis == joystick_keymap.x_axis)
 551                 {
 552                   if (event.jaxis.value < -joystick_keymap.dead_zone)
 553                     input_direction = D_WEST;
 554                   else if (event.jaxis.value > joystick_keymap.dead_zone)
 555                     input_direction = D_EAST;
 556                 }
 557               else if (event.jaxis.axis == joystick_keymap.y_axis)
 558                 {
 559                   if (event.jaxis.value > joystick_keymap.dead_zone)
 560                     input_direction = D_SOUTH;
 561                   else if (event.jaxis.value < -joystick_keymap.dead_zone)
 562                     input_direction = D_NORTH;
 563                 }
 564               break;
 565
 566             case SDL_JOYBUTTONDOWN:
 567               if (event.jbutton.button == joystick_keymap.b_button)
 568                 enter_level = true;
 569               else if (event.jbutton.button == joystick_keymap.start_button)
 570                 on_escape_press();
 571               break;
 572
 573             default:
 574               break;
 575             }
 576         }
 577     }
 578
 579   if (!Menu::current())
 580     {
 581       Uint8 *keystate = SDL_GetKeyState(NULL);
 582
 583       if (keystate[SDLK_LEFT])
 584         input_direction = D_WEST;
 585       else if (keystate[SDLK_RIGHT])
 586         input_direction = D_EAST;
 587       else if (keystate[SDLK_UP])
 588         input_direction = D_NORTH;
 589       else if (keystate[SDLK_DOWN])
 590         input_direction = D_SOUTH;
 591     }
 592 }
 593
 594 Vector
 595 WorldMap::get_next_tile(Vector pos, Direction direction)
 596 {
 597   switch(direction)
 598     {
 599     case D_WEST:
 600       pos.x -= 1;
 601       break;
 602     case D_EAST:
 603       pos.x += 1;
 604       break;
 605     case D_NORTH:
 606       pos.y -= 1;
 607       break;
 608     case D_SOUTH:
 609       pos.y += 1;
 610       break;
 611     case D_NONE:
 612       break;
 613     }
 614   return pos;
 615 }
 616
 617 bool
 618 WorldMap::path_ok(Direction direction, Vector old_pos, Vector* new_pos)
 619 {
 620   *new_pos = get_next_tile(old_pos, direction);
 621
 622   if (!(new_pos->x >= 0 && new_pos->x < width
 623         && new_pos->y >= 0 && new_pos->y < height))
 624     { // New position is outsite the tilemap
 625       return false;
 626     }
 627   else
 628     { // Check if we the tile allows us to go to new_pos
 629       switch(direction)
 630         {
 631         case D_WEST:
 632           return (at(old_pos)->west && at(*new_pos)->east);
 633
 634         case D_EAST:
 635           return (at(old_pos)->east && at(*new_pos)->west);
 636
 637         case D_NORTH:
 638           return (at(old_pos)->north && at(*new_pos)->south);
 639
 640         case D_SOUTH:
 641           return (at(old_pos)->south && at(*new_pos)->north);
 642
 643         case D_NONE:
 644           assert(!"path_ok() can't work if direction is NONE");
 645         }
 646       return false;
 647     }
 648 }
 649
 650 void
 651 WorldMap::update(float delta)
 652 {
 653   if (enter_level && !tux->is_moving())
 654     {
 655       bool level_finished = true;
 656       Level* level = at_level();
 657       if (!level)
 658         {
 659         std::cout << "Nothing to enter at: "
 660           << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << std::endl;
 661         return;
 662         }
 663
 664
 665       if(!level->name.empty())
 666         {
 667           if (level->x == tux->get_tile_pos().x &&
 668               level->y == tux->get_tile_pos().y)
 669             {
 670               PlayerStatus old_player_status = player_status;
 671
 672               std::cout << "Enter the current level: " << level->name << std::endl;
 673               // do a shriking fade to the level
 674               shrink_fade(Vector((level->x*32 + 16 + offset.x),(level->y*32 + 16
 675                       + offset.y)), 500);
 676               GameSession session(datadir +  "/levels/" + level->name,
 677                                   ST_GL_LOAD_LEVEL_FILE, level->vertical_flip);
 678
 679               switch (session.run())
 680                 {
 681                 case GameSession::ES_LEVEL_FINISHED:
 682                   {
 683                     level_finished = true;
 684                     bool old_level_state = level->solved;
 685                     level->solved = true;
 686
 687                     if (session.get_current_sector()->player->got_power !=
 688                           session.get_current_sector()->player->NONE_POWER)
 689                       player_status.bonus = PlayerStatus::FLOWER_BONUS;
 690                     else if (session.get_current_sector()->player->size == BIG)
 691                       player_status.bonus = PlayerStatus::GROWUP_BONUS;
 692                     else
 693                       player_status.bonus = PlayerStatus::NO_BONUS;
 694
 695                     if (old_level_state != level->solved)
 696                       { // Try to detect the next direction to which we should walk
 697                         // FIXME: Mostly a hack
 698                         Direction dir = D_NONE;
 699
 700                         Tile* tile = at(tux->get_tile_pos());
 701
 702                         if (tile->north && tux->back_direction != D_NORTH)
 703                           dir = D_NORTH;
 704                         else if (tile->south && tux->back_direction != D_SOUTH)
 705                           dir = D_SOUTH;
 706                         else if (tile->east && tux->back_direction != D_EAST)
 707                           dir = D_EAST;
 708                         else if (tile->west && tux->back_direction != D_WEST)
 709                           dir = D_WEST;
 710
 711                         if (dir != D_NONE)
 712                           {
 713                             tux->set_direction(dir);
 714                             //tux->update(delta);
 715                           }
 716
 717                         std::cout << "Walk to dir: " << dir << std::endl;
 718                       }
 719                   }
 720
 721                   break;
 722                 case GameSession::ES_LEVEL_ABORT:
 723                   level_finished = false;
 724                   /* In case the player's abort the level, keep it using the old
 725                       status. But the minimum lives and no bonus. */
 726                   player_status.score = old_player_status.score;
 727                   player_status.distros = old_player_status.distros;
 728                   player_status.lives = std::min(old_player_status.lives, player_status.lives);
 729                   player_status.bonus = player_status.NO_BONUS;
 730
 731                   break;
 732                 case GameSession::ES_GAME_OVER:
 733                   {
 734                   level_finished = false;
 735                   /* draw an end screen */
 736                   /* in the future, this should make a dialog a la SuperMario, asking
 737                   if the player wants to restart the world map with no score and from
 738                   level 1 */
 739                   char str[80];
 740
 741                   DrawingContext context;
 742                   context.draw_gradient(Color (200,240,220), Color(200,200,220),
 743                       LAYER_BACKGROUND0);
 744
 745                   context.draw_text_center(blue_text, _("GAMEOVER"),
 746                       Vector(0, 200), LAYER_FOREGROUND1);
 747
 748                   sprintf(str, _("SCORE: %d"), player_status.score);
 749                   context.draw_text_center(gold_text, str,
 750                       Vector(0, 230), LAYER_FOREGROUND1);
 751
 752                   sprintf(str, _("COINS: %d"), player_status.distros);
 753                   context.draw_text_center(gold_text, str,
 754                       Vector(0, screen->w - 32), LAYER_FOREGROUND1);
 755
 756                   context.do_drawing();
 757
 758                   SDL_Event event;
 759                   wait_for_event(event,2000,5000,true);
 760
 761                   quit = true;
 762                   player_status.reset();
 763                   break;
 764                   }
 765                 case GameSession::ES_NONE:
 766                   assert(false);
 767                   // Should never be reached
 768                   break;
 769                 }
 770
 771               sound_manager->play_music(song);
 772               Menu::set_current(0);
 773               if (!savegame_file.empty())
 774                 savegame(savegame_file);
 775             }
 776         }
 777       /* The porpose of the next checking is that if the player lost
 778          the level (in case there is one), don't show anything */
 779       if(level_finished)
 780         {
 781         if (!level->extro_filename.empty())
 782           {
 783           // Display a text file
 784           display_text_file(level->extro_filename, SCROLL_SPEED_MESSAGE);
 785           }
 786         if (level->swap_x != -1 && level->swap_y != -1)
 787           {
 788           // TODO: add an effect, like a camera scrolling, or at least, a fading
 789           tux->set_tile_pos(Vector(level->swap_x, level->swap_y));
 790           }
 791         if (!level->next_worldmap.empty())
 792           {
 793           // Load given worldmap
 794           loadmap(level->next_worldmap);
 795           }
 796         if (level->quit_worldmap)
 797           quit = true;
 798         }
 799     }
 800   else
 801     {
 802       tux->action(delta);
 803       tux->set_direction(input_direction);
 804     }
 805
 806   Menu* menu = Menu::current();
 807   if(menu)
 808     {
 809       menu->action();
 810
 811       if(menu == worldmap_menu)
 812         {
 813           switch (worldmap_menu->check())
 814             {
 815             case MNID_RETURNWORLDMAP: // Return to game
 816               break;
 817             case MNID_QUITWORLDMAP: // Quit Worldmap
 818               quit = true;
 819               break;
 820             }
 821         }
 822       else if(menu == options_menu)
 823         {
 824           process_options_menu();
 825         }
 826     }
 827 }
 828
 829 Tile*
 830 WorldMap::at(Vector p)
 831 {
 832   assert(p.x >= 0
 833          && p.x < width
 834          && p.y >= 0
 835          && p.y < height);
 836
 837   int x = int(p.x);
 838   int y = int(p.y);
 839   return tile_manager->get(tilemap[width * y + x]);
 840 }
 841
 842 WorldMap::Level*
 843 WorldMap::at_level()
 844 {
 845   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 846     {
 847       if (i->x == tux->get_tile_pos().x &&
 848           i->y == tux->get_tile_pos().y)
 849         return &*i;
 850     }
 851
 852   return 0;
 853 }
 854
 855
 856 void
 857 WorldMap::draw(DrawingContext& context, const Vector& offset)
 858 {
 859   for(int y = 0; y < height; ++y)
 860     for(int x = 0; x < width; ++x)
 861       {
 862         Tile* tile = at(Vector(x, y));
 863         context.draw_surface(tile->sprite,
 864             Vector(x*32 + offset.x, y*32 + offset.y), LAYER_TILES);
 865       }
 866
 867   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 868     {
 869       if(i->name.empty())
 870         continue;
 871
 872       if (i->solved)
 873         context.draw_surface(leveldot_green,
 874             Vector(i->x*32 + offset.x, i->y*32 + offset.y), LAYER_TILES+1);
 875       else
 876         context.draw_surface(leveldot_red,
 877             Vector(i->x*32 + offset.x, i->y*32 + offset.y), LAYER_TILES+1);
 878     }
 879
 880   tux->draw(context, offset);
 881   draw_status(context);
 882 }
 883
 884 void
 885 WorldMap::draw_status(DrawingContext& context)
 886 {
 887   char str[80];
 888   sprintf(str, " %d", player_status.score);
 889
 890   context.draw_text(white_text, _("SCORE"), Vector(0, 0), LAYER_FOREGROUND1);
 891   context.draw_text(gold_text, str, Vector(96, 0), LAYER_FOREGROUND1);
 892
 893   sprintf(str, "%d", player_status.distros);
 894   context.draw_text(white_text, _("COINS"), Vector(screen->w/2 - 16*5, 0),
 895       LAYER_FOREGROUND1);
 896   context.draw_text(gold_text, str, Vector(screen->w/2 + (16*5)/2, 0),
 897         LAYER_FOREGROUND1);
 898
 899   if (player_status.lives >= 5)
 900     {
 901       sprintf(str, "%dx", player_status.lives);
 902       context.draw_text(gold_text, str,
 903           Vector(screen->w - gold_text->get_text_width(str) - tux_life->w, 0),
 904           LAYER_FOREGROUND1);
 905       context.draw_surface(tux_life, Vector(screen->w -
 906             gold_text->get_text_width("9"), 0), LAYER_FOREGROUND1);
 907     }
 908   else
 909     {
 910       for(int i= 0; i < player_status.lives; ++i)
 911         context.draw_surface(tux_life,
 912             Vector(screen->w - tux_life->w*4 + (tux_life->w*i), 0),
 913             LAYER_FOREGROUND1);
 914     }
 915   context.draw_text(white_text, _("LIVES"),
 916       Vector(screen->w - white_text->get_text_width(_("LIVES")) - white_text->get_text_width("   99"), 0),
 917       LAYER_FOREGROUND1);
 918
 919   if (!tux->is_moving())
 920     {
 921       for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 922         {
 923           if (i->x == tux->get_tile_pos().x &&
 924               i->y == tux->get_tile_pos().y)
 925             {
 926               if(!i->name.empty())
 927                 {
 928                 if(i->title == "")
 929                   get_level_title(*i);
 930
 931                 context.draw_text_center(white_text, i->title,
 932                     Vector(0, screen->h - white_text->get_height() - 30),
 933                     LAYER_FOREGROUND1);
 934                 }
 935
 936               /* Display a message in the map, if any as been selected */
 937               if(!i->display_map_message.empty())
 938                 context.draw_text_center(gold_text, i->display_map_message,
 939                     Vector(0, screen->h - white_text->get_height() - 60),
 940                     LAYER_FOREGROUND1);
 941               break;
 942             }
 943         }
 944     }
 945 }
 946
 947 void
 948 WorldMap::display()
 949 {
 950   Menu::set_current(0);
 951
 952   quit = false;
 953
 954   song = sound_manager->load_music(datadir +  "/music/" + music);
 955   sound_manager->play_music(song);
 956
 957   unsigned int last_update_time;
 958   unsigned int update_time;
 959
 960   last_update_time = update_time = st_get_ticks();
 961
 962   DrawingContext context;
 963   while(!quit)
 964     {
 965       float delta = ((float)(update_time-last_update_time))/100.0;
 966
 967       delta *= 1.3f;
 968
 969       if (delta > 10.0f)
 970         delta = .3f;
 971
 972       last_update_time = update_time;
 973       update_time      = st_get_ticks();
 974
 975       Vector tux_pos = tux->get_pos();
 976       if (1)
 977         {
 978           offset.x = -tux_pos.x + screen->w/2;
 979           offset.y = -tux_pos.y + screen->h/2;
 980
 981           if (offset.x > 0) offset.x = 0;
 982           if (offset.y > 0) offset.y = 0;
 983
 984           if (offset.x < screen->w - width*32) offset.x = screen->w - width*32;
 985           if (offset.y < screen->h - height*32) offset.y = screen->h - height*32;
 986         }
 987
 988       draw(context, offset);
 989       get_input();
 990       update(delta);
 991
 992       if(Menu::current())
 993         {
 994           Menu::current()->draw(context);
 995           mouse_cursor->draw(context);
 996         }
 997
 998       context.do_drawing();
 999
1000       SDL_Delay(20);
1001     }
1002 }
1003
1004 void
1005 WorldMap::savegame(const std::string& filename)
1006 {
1007   if(filename != "")
1008     return;
1009
1010   std::cout << "savegame: " << filename << std::endl;
1011   std::ofstream out(filename.c_str());
1012
1013   int nb_solved_levels = 0;
1014   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1015     {
1016       if (i->solved)
1017         ++nb_solved_levels;
1018     }
1019
1020   out << "(supertux-savegame\n"
1021       << "  (version 1)\n"
1022       << "  (title  \"" << name << " - " << nb_solved_levels << "/" << levels.size() << "\")\n"
1023       << "  (map    \"" << map_filename << "\")\n"
1024       << "  (lives   " << player_status.lives << ")\n"
1025       << "  (score   " << player_status.score << ")\n"
1026       << "  (distros " << player_status.distros << ")\n"
1027       << "  (tux (x " << tux->get_tile_pos().x << ") (y " << tux->get_tile_pos().y << ")\n"
1028       << "       (back \"" << direction_to_string(tux->back_direction) << "\")\n"
1029       << "       (bonus \"" << bonus_to_string(player_status.bonus) <<  "\"))\n"
1030       << "  (levels\n";
1031
1032   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1033     {
1034       if (i->solved)
1035         {
1036           out << "     (level (name \"" << i->name << "\")\n"
1037               << "            (solved #t))\n";
1038         }
1039     }
1040
1041   out << "   )\n"
1042       << " )\n\n;; EOF ;;" << std::endl;
1043 }
1044
1045 void
1046 WorldMap::loadgame(const std::string& filename)
1047 {
1048   std::cout << "loadgame: " << filename << std::endl;
1049   savegame_file = filename;
1050   map_filename = "icyisland.stwm";
1051
1052   if (access(filename.c_str(), F_OK) != 0)
1053     {
1054     load_map();
1055     return;
1056     }
1057
1058   lisp_object_t* savegame = lisp_read_from_file(filename);
1059   if (!savegame)
1060     {
1061       std::cout << "WorldMap:loadgame: File not found: " << filename << std::endl;
1062       load_map();
1063       return;
1064     }
1065
1066   lisp_object_t* cur = savegame;
1067
1068   if (strcmp(lisp_symbol(lisp_car(cur)), "supertux-savegame") != 0)
1069     {
1070     load_map();
1071     return;
1072     }
1073
1074   cur = lisp_cdr(cur);
1075   LispReader reader(cur);
1076
1077   /* Get the Map filename and then load it before setting level settings */
1078   reader.read_string("map", map_filename);
1079   load_map();
1080
1081   reader.read_int("lives", player_status.lives);
1082   reader.read_int("score", player_status.score);
1083   reader.read_int("distros", player_status.distros);
1084
1085   if (player_status.lives < 0)
1086     player_status.lives = START_LIVES;
1087
1088   lisp_object_t* tux_cur = 0;
1089   if (reader.read_lisp("tux", tux_cur))
1090     {
1091       Vector p;
1092       std::string back_str = "none";
1093       std::string bonus_str = "none";
1094
1095       LispReader tux_reader(tux_cur);
1096       tux_reader.read_float("x", p.x);
1097       tux_reader.read_float("y", p.y);
1098       tux_reader.read_string("back", back_str);
1099       tux_reader.read_string("bonus", bonus_str);
1100
1101       player_status.bonus = string_to_bonus(bonus_str);
1102       tux->back_direction = string_to_direction(back_str);
1103       tux->set_tile_pos(p);
1104     }
1105
1106   lisp_object_t* level_cur = 0;
1107   if (reader.read_lisp("levels", level_cur))
1108     {
1109       while(level_cur)
1110         {
1111           lisp_object_t* sym  = lisp_car(lisp_car(level_cur));
1112           lisp_object_t* data = lisp_cdr(lisp_car(level_cur));
1113
1114           if (strcmp(lisp_symbol(sym), "level") == 0)
1115             {
1116               std::string name;
1117               bool solved = false;
1118
1119               LispReader level_reader(data);
1120               level_reader.read_string("name", name, true);
1121               level_reader.read_bool("solved", solved);
1122
1123               for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1124                 {
1125                   if (name == i->name)
1126                     i->solved = solved;
1127                 }
1128             }
1129
1130           level_cur = lisp_cdr(level_cur);
1131         }
1132     }
1133
1134   lisp_free(savegame);
1135 }
1136
1137 void
1138 WorldMap::loadmap(const std::string& filename)
1139 {
1140   savegame_file = "";
1141   map_filename = filename;
1142   load_map();
1143 }
1144
1145 } // namespace WorldMapNS
1146
1147 /* Local Variables: */
1148 /* mode:c++ */
1149 /* End: */
1150