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("goto-world", level.goto_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   FILE * fi;
 493   lisp_object_t* root_obj = 0;
 494   fi = fopen((datadir +  "/levels/" + level.name).c_str(), "r");
 495   if (fi == NULL)
 496   {
 497     perror((datadir +  "/levels/" + level.name).c_str());
 498     return;
 499   }
 500
 501   lisp_stream_t stream;
 502   lisp_stream_init_file (&stream, fi);
 503   root_obj = lisp_read (&stream);
 504
 505   if (root_obj->type == LISP_TYPE_EOF || root_obj->type == LISP_TYPE_PARSE_ERROR)
 506   {
 507     printf("World: Parse Error in file %s", level.name.c_str());
 508   }
 509
 510   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-level") == 0)
 511   {
 512     LispReader reader(lisp_cdr(root_obj));
 513     reader.read_string("name", level.title, true);
 514   }
 515
 516   lisp_free(root_obj);
 517
 518   fclose(fi);
 519 }
 520
 521 void
 522 WorldMap::on_escape_press()
 523 {
 524   // Show or hide the menu
 525   if(!Menu::current())
 526     Menu::set_current(worldmap_menu);
 527   else
 528     Menu::set_current(0);
 529 }
 530
 531 void
 532 WorldMap::get_input()
 533 {
 534   enter_level = false;
 535   input_direction = D_NONE;
 536
 537   SDL_Event event;
 538   while (SDL_PollEvent(&event))
 539     {
 540       if (Menu::current())
 541         {
 542           Menu::current()->event(event);
 543         }
 544       else
 545         {
 546           switch(event.type)
 547             {
 548             case SDL_QUIT:
 549               st_abort("Received window close", "");
 550               break;
 551
 552             case SDL_KEYDOWN:
 553               switch(event.key.keysym.sym)
 554                 {
 555                 case SDLK_ESCAPE:
 556                   on_escape_press();
 557                   break;
 558                 case SDLK_LCTRL:
 559                 case SDLK_RETURN:
 560                   enter_level = true;
 561                   break;
 562                 default:
 563                   break;
 564                 }
 565               break;
 566
 567             case SDL_JOYAXISMOTION:
 568               if (event.jaxis.axis == joystick_keymap.x_axis)
 569                 {
 570                   if (event.jaxis.value < -joystick_keymap.dead_zone)
 571                     input_direction = D_WEST;
 572                   else if (event.jaxis.value > joystick_keymap.dead_zone)
 573                     input_direction = D_EAST;
 574                 }
 575               else if (event.jaxis.axis == joystick_keymap.y_axis)
 576                 {
 577                   if (event.jaxis.value > joystick_keymap.dead_zone)
 578                     input_direction = D_SOUTH;
 579                   else if (event.jaxis.value < -joystick_keymap.dead_zone)
 580                     input_direction = D_NORTH;
 581                 }
 582               break;
 583
 584             case SDL_JOYBUTTONDOWN:
 585               if (event.jbutton.button == joystick_keymap.b_button)
 586                 enter_level = true;
 587               else if (event.jbutton.button == joystick_keymap.start_button)
 588                 on_escape_press();
 589               break;
 590
 591             default:
 592               break;
 593             }
 594         }
 595     }
 596
 597   if (!Menu::current())
 598     {
 599       Uint8 *keystate = SDL_GetKeyState(NULL);
 600
 601       if (keystate[SDLK_LEFT])
 602         input_direction = D_WEST;
 603       else if (keystate[SDLK_RIGHT])
 604         input_direction = D_EAST;
 605       else if (keystate[SDLK_UP])
 606         input_direction = D_NORTH;
 607       else if (keystate[SDLK_DOWN])
 608         input_direction = D_SOUTH;
 609     }
 610 }
 611
 612 Vector
 613 WorldMap::get_next_tile(Vector pos, Direction direction)
 614 {
 615   switch(direction)
 616     {
 617     case D_WEST:
 618       pos.x -= 1;
 619       break;
 620     case D_EAST:
 621       pos.x += 1;
 622       break;
 623     case D_NORTH:
 624       pos.y -= 1;
 625       break;
 626     case D_SOUTH:
 627       pos.y += 1;
 628       break;
 629     case D_NONE:
 630       break;
 631     }
 632   return pos;
 633 }
 634
 635 bool
 636 WorldMap::path_ok(Direction direction, Vector old_pos, Vector* new_pos)
 637 {
 638   *new_pos = get_next_tile(old_pos, direction);
 639
 640   if (!(new_pos->x >= 0 && new_pos->x < width
 641         && new_pos->y >= 0 && new_pos->y < height))
 642     { // New position is outsite the tilemap
 643       return false;
 644     }
 645   else
 646     { // Check if we the tile allows us to go to new_pos
 647       switch(direction)
 648         {
 649         case D_WEST:
 650           return (at(old_pos)->west && at(*new_pos)->east);
 651
 652         case D_EAST:
 653           return (at(old_pos)->east && at(*new_pos)->west);
 654
 655         case D_NORTH:
 656           return (at(old_pos)->north && at(*new_pos)->south);
 657
 658         case D_SOUTH:
 659           return (at(old_pos)->south && at(*new_pos)->north);
 660
 661         case D_NONE:
 662           assert(!"path_ok() can't work if direction is NONE");
 663         }
 664       return false;
 665     }
 666 }
 667
 668 void
 669 WorldMap::update(float delta)
 670 {
 671   if (enter_level && !tux->is_moving())
 672     {
 673       bool level_finished = true;
 674       Level* level = at_level();
 675       if (!level)
 676         {
 677         std::cout << "Nothing to enter at: "
 678           << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << std::endl;
 679         return;
 680         }
 681
 682
 683       if(!level->name.empty())
 684         {
 685           if (level->x == tux->get_tile_pos().x &&
 686               level->y == tux->get_tile_pos().y)
 687             {
 688               PlayerStatus old_player_status = player_status;
 689
 690               std::cout << "Enter the current level: " << level->name << std::endl;
 691               // do a shriking fade to the level
 692               shrink_fade(Vector((level->x*32 + 16 + offset.x),(level->y*32 + 16
 693                       + offset.y)), 500);
 694               GameSession session(datadir +  "/levels/" + level->name,
 695                                   ST_GL_LOAD_LEVEL_FILE, level->vertical_flip);
 696
 697               switch (session.run())
 698                 {
 699                 case GameSession::ES_LEVEL_FINISHED:
 700                   {
 701                     level_finished = true;
 702                     bool old_level_state = level->solved;
 703                     level->solved = true;
 704
 705                     if (session.get_current_sector()->player->got_power !=
 706                           session.get_current_sector()->player->NONE_POWER)
 707                       player_status.bonus = PlayerStatus::FLOWER_BONUS;
 708                     else if (session.get_current_sector()->player->size == BIG)
 709                       player_status.bonus = PlayerStatus::GROWUP_BONUS;
 710                     else
 711                       player_status.bonus = PlayerStatus::NO_BONUS;
 712
 713                     if (old_level_state != level->solved)
 714                       { // Try to detect the next direction to which we should walk
 715                         // FIXME: Mostly a hack
 716                         Direction dir = D_NONE;
 717
 718                         Tile* tile = at(tux->get_tile_pos());
 719
 720                         if (tile->north && tux->back_direction != D_NORTH)
 721                           dir = D_NORTH;
 722                         else if (tile->south && tux->back_direction != D_SOUTH)
 723                           dir = D_SOUTH;
 724                         else if (tile->east && tux->back_direction != D_EAST)
 725                           dir = D_EAST;
 726                         else if (tile->west && tux->back_direction != D_WEST)
 727                           dir = D_WEST;
 728
 729                         if (dir != D_NONE)
 730                           {
 731                             tux->set_direction(dir);
 732                             //tux->update(delta);
 733                           }
 734
 735                         std::cout << "Walk to dir: " << dir << std::endl;
 736                       }
 737                   }
 738
 739                   break;
 740                 case GameSession::ES_LEVEL_ABORT:
 741                   level_finished = false;
 742                   /* In case the player's abort the level, keep it using the old
 743                       status. But the minimum lives and no bonus. */
 744                   player_status.score = old_player_status.score;
 745                   player_status.distros = old_player_status.distros;
 746                   player_status.lives = std::min(old_player_status.lives, player_status.lives);
 747                   player_status.bonus = player_status.NO_BONUS;
 748
 749                   break;
 750                 case GameSession::ES_GAME_OVER:
 751                   {
 752                   level_finished = false;
 753                   /* draw an end screen */
 754                   /* in the future, this should make a dialog a la SuperMario, asking
 755                   if the player wants to restart the world map with no score and from
 756                   level 1 */
 757                   char str[80];
 758
 759                   DrawingContext context;
 760                   context.draw_gradient(Color (200,240,220), Color(200,200,220),
 761                       LAYER_BACKGROUND0);
 762
 763                   context.draw_text_center(blue_text, _("GAMEOVER"),
 764                       Vector(0, 200), LAYER_FOREGROUND1);
 765
 766                   sprintf(str, _("SCORE: %d"), player_status.score);
 767                   context.draw_text_center(gold_text, str,
 768                       Vector(0, 230), LAYER_FOREGROUND1);
 769
 770                   sprintf(str, _("COINS: %d"), player_status.distros);
 771                   context.draw_text_center(gold_text, str,
 772                       Vector(0, screen->w - 32), LAYER_FOREGROUND1);
 773
 774                   context.do_drawing();
 775
 776                   SDL_Event event;
 777                   wait_for_event(event,2000,5000,true);
 778
 779                   quit = true;
 780                   player_status.reset();
 781                   break;
 782                   }
 783                 case GameSession::ES_NONE:
 784                   assert(false);
 785                   // Should never be reached
 786                   break;
 787                 }
 788
 789               sound_manager->play_music(song);
 790               Menu::set_current(0);
 791               if (!savegame_file.empty())
 792                 savegame(savegame_file);
 793             }
 794         }
 795       /* The porpose of the next checking is that if the player lost
 796          the level (in case there is one), don't show anything */
 797       if(level_finished)
 798         {
 799         if (!level->extro_filename.empty())
 800           {
 801           // Display a text file
 802           display_text_file(level->extro_filename, SCROLL_SPEED_MESSAGE);
 803           }
 804         if (level->swap_x != -1 && level->swap_y != -1)
 805           {
 806           // TODO: add an effect, like a camera scrolling, or at least, a fading
 807           tux->set_tile_pos(Vector(level->swap_x, level->swap_y));
 808           }
 809         if (!level->goto_worldmap.empty())
 810           {
 811           // Load given worldmap
 812           loadmap(level->goto_worldmap);
 813           }
 814         if (level->quit_worldmap)
 815           quit = true;
 816         }
 817     }
 818   else
 819     {
 820       tux->action(delta);
 821       tux->set_direction(input_direction);
 822     }
 823
 824   Menu* menu = Menu::current();
 825   if(menu)
 826     {
 827       menu->action();
 828
 829       if(menu == worldmap_menu)
 830         {
 831           switch (worldmap_menu->check())
 832             {
 833             case MNID_RETURNWORLDMAP: // Return to game
 834               break;
 835             case MNID_QUITWORLDMAP: // Quit Worldmap
 836               quit = true;
 837               break;
 838             }
 839         }
 840       else if(menu == options_menu)
 841         {
 842           process_options_menu();
 843         }
 844     }
 845 }
 846
 847 Tile*
 848 WorldMap::at(Vector p)
 849 {
 850   assert(p.x >= 0
 851          && p.x < width
 852          && p.y >= 0
 853          && p.y < height);
 854
 855   int x = int(p.x);
 856   int y = int(p.y);
 857   return tile_manager->get(tilemap[width * y + x]);
 858 }
 859
 860 WorldMap::Level*
 861 WorldMap::at_level()
 862 {
 863   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 864     {
 865       if (i->x == tux->get_tile_pos().x &&
 866           i->y == tux->get_tile_pos().y)
 867         return &*i;
 868     }
 869
 870   return 0;
 871 }
 872
 873
 874 void
 875 WorldMap::draw(DrawingContext& context, const Vector& offset)
 876 {
 877   for(int y = 0; y < height; ++y)
 878     for(int x = 0; x < width; ++x)
 879       {
 880         Tile* tile = at(Vector(x, y));
 881         context.draw_surface(tile->sprite,
 882             Vector(x*32 + offset.x, y*32 + offset.y), LAYER_TILES);
 883       }
 884
 885   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 886     {
 887       if(i->name.empty())
 888         continue;
 889
 890       if (i->solved)
 891         context.draw_surface(leveldot_green,
 892             Vector(i->x*32 + offset.x, i->y*32 + offset.y), LAYER_TILES+1);
 893       else
 894         context.draw_surface(leveldot_red,
 895             Vector(i->x*32 + offset.x, i->y*32 + offset.y), LAYER_TILES+1);
 896     }
 897
 898   tux->draw(context, offset);
 899   draw_status(context);
 900 }
 901
 902 void
 903 WorldMap::draw_status(DrawingContext& context)
 904 {
 905   char str[80];
 906   sprintf(str, " %d", player_status.score);
 907
 908   context.draw_text(white_text, _("SCORE"), Vector(0, 0), LAYER_FOREGROUND1);
 909   context.draw_text(gold_text, str, Vector(96, 0), LAYER_FOREGROUND1);
 910
 911   sprintf(str, "%d", player_status.distros);
 912   context.draw_text(white_text, _("COINS"), Vector(screen->w/2 - 16*5, 0),
 913       LAYER_FOREGROUND1);
 914   context.draw_text(gold_text, str, Vector(screen->w/2 + (16*5)/2, 0),
 915         LAYER_FOREGROUND1);
 916
 917   if (player_status.lives >= 5)
 918     {
 919       sprintf(str, "%dx", player_status.lives);
 920       context.draw_text(gold_text, str,
 921           Vector(screen->w - gold_text->get_text_width(str) - tux_life->w, 0),
 922           LAYER_FOREGROUND1);
 923       context.draw_surface(tux_life, Vector(screen->w -
 924             gold_text->get_text_width("9"), 0), LAYER_FOREGROUND1);
 925     }
 926   else
 927     {
 928       for(int i= 0; i < player_status.lives; ++i)
 929         context.draw_surface(tux_life,
 930             Vector(screen->w - tux_life->w*4 + (tux_life->w*i), 0),
 931             LAYER_FOREGROUND1);
 932     }
 933   context.draw_text(white_text, _("LIVES"),
 934       Vector(screen->w - white_text->get_text_width(_("LIVES")) - white_text->get_text_width("   99"), 0),
 935       LAYER_FOREGROUND1);
 936
 937   if (!tux->is_moving())
 938     {
 939       for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 940         {
 941           if (i->x == tux->get_tile_pos().x &&
 942               i->y == tux->get_tile_pos().y)
 943             {
 944               if(!i->name.empty())
 945                 {
 946                 if(i->title == "")
 947                   get_level_title(*i);
 948
 949                 context.draw_text_center(white_text, i->title,
 950                     Vector(0, screen->h - white_text->get_height() - 30),
 951                     LAYER_FOREGROUND1);
 952                 }
 953
 954               /* Display a message in the map, if any as been selected */
 955               if(!i->display_map_message.empty())
 956                 context.draw_text_center(gold_text, i->display_map_message,
 957                     Vector(0, screen->h - white_text->get_height() - 60),
 958                     LAYER_FOREGROUND1);
 959               break;
 960             }
 961         }
 962     }
 963 }
 964
 965 void
 966 WorldMap::display()
 967 {
 968   Menu::set_current(0);
 969
 970   quit = false;
 971
 972   song = sound_manager->load_music(datadir +  "/music/" + music);
 973   sound_manager->play_music(song);
 974
 975   unsigned int last_update_time;
 976   unsigned int update_time;
 977
 978   last_update_time = update_time = st_get_ticks();
 979
 980   DrawingContext context;
 981   while(!quit)
 982     {
 983       float delta = ((float)(update_time-last_update_time))/100.0;
 984
 985       delta *= 1.3f;
 986
 987       if (delta > 10.0f)
 988         delta = .3f;
 989
 990       last_update_time = update_time;
 991       update_time      = st_get_ticks();
 992
 993       Vector tux_pos = tux->get_pos();
 994       if (1)
 995         {
 996           offset.x = -tux_pos.x + screen->w/2;
 997           offset.y = -tux_pos.y + screen->h/2;
 998
 999           if (offset.x > 0) offset.x = 0;
1000           if (offset.y > 0) offset.y = 0;
1001
1002           if (offset.x < screen->w - width*32) offset.x = screen->w - width*32;
1003           if (offset.y < screen->h - height*32) offset.y = screen->h - height*32;
1004         }
1005
1006       draw(context, offset);
1007       get_input();
1008       update(delta);
1009
1010       if(Menu::current())
1011         {
1012           Menu::current()->draw(context);
1013           mouse_cursor->draw(context);
1014         }
1015
1016       context.do_drawing();
1017
1018       SDL_Delay(20);
1019     }
1020 }
1021
1022 void
1023 WorldMap::savegame(const std::string& filename)
1024 {
1025   if(filename != "")
1026     return;
1027
1028   std::cout << "savegame: " << filename << std::endl;
1029   std::ofstream out(filename.c_str());
1030
1031   int nb_solved_levels = 0;
1032   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1033     {
1034       if (i->solved)
1035         ++nb_solved_levels;
1036     }
1037
1038   out << "(supertux-savegame\n"
1039       << "  (version 1)\n"
1040       << "  (title  \"" << name << " - " << nb_solved_levels << "/" << levels.size() << "\")\n"
1041       << "  (map    \"" << map_filename << "\")\n"
1042       << "  (lives   " << player_status.lives << ")\n"
1043       << "  (score   " << player_status.score << ")\n"
1044       << "  (distros " << player_status.distros << ")\n"
1045       << "  (tux (x " << tux->get_tile_pos().x << ") (y " << tux->get_tile_pos().y << ")\n"
1046       << "       (back \"" << direction_to_string(tux->back_direction) << "\")\n"
1047       << "       (bonus \"" << bonus_to_string(player_status.bonus) <<  "\"))\n"
1048       << "  (levels\n";
1049
1050   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1051     {
1052       if (i->solved)
1053         {
1054           out << "     (level (name \"" << i->name << "\")\n"
1055               << "            (solved #t))\n";
1056         }
1057     }
1058
1059   out << "   )\n"
1060       << " )\n\n;; EOF ;;" << std::endl;
1061 }
1062
1063 void
1064 WorldMap::loadgame(const std::string& filename)
1065 {
1066   std::cout << "loadgame: " << filename << std::endl;
1067   savegame_file = filename;
1068   map_filename = "icyisland.stwm";
1069
1070   if (access(filename.c_str(), F_OK) != 0)
1071     {
1072     load_map();
1073     return;
1074     }
1075
1076   lisp_object_t* savegame = lisp_read_from_file(filename);
1077   if (!savegame)
1078     {
1079       std::cout << "WorldMap:loadgame: File not found: " << filename << std::endl;
1080       load_map();
1081       return;
1082     }
1083
1084   lisp_object_t* cur = savegame;
1085
1086   if (strcmp(lisp_symbol(lisp_car(cur)), "supertux-savegame") != 0)
1087     {
1088     load_map();
1089     return;
1090     }
1091
1092   cur = lisp_cdr(cur);
1093   LispReader reader(cur);
1094
1095   /* Get the Map filename and then load it before setting level settings */
1096   reader.read_string("map", map_filename);
1097   load_map();
1098
1099   reader.read_int("lives", player_status.lives);
1100   reader.read_int("score", player_status.score);
1101   reader.read_int("distros", player_status.distros);
1102
1103   if (player_status.lives < 0)
1104     player_status.lives = START_LIVES;
1105
1106   lisp_object_t* tux_cur = 0;
1107   if (reader.read_lisp("tux", tux_cur))
1108     {
1109       Vector p;
1110       std::string back_str = "none";
1111       std::string bonus_str = "none";
1112
1113       LispReader tux_reader(tux_cur);
1114       tux_reader.read_float("x", p.x);
1115       tux_reader.read_float("y", p.y);
1116       tux_reader.read_string("back", back_str);
1117       tux_reader.read_string("bonus", bonus_str);
1118
1119       player_status.bonus = string_to_bonus(bonus_str);
1120       tux->back_direction = string_to_direction(back_str);
1121       tux->set_tile_pos(p);
1122     }
1123
1124   lisp_object_t* level_cur = 0;
1125   if (reader.read_lisp("levels", level_cur))
1126     {
1127       while(level_cur)
1128         {
1129           lisp_object_t* sym  = lisp_car(lisp_car(level_cur));
1130           lisp_object_t* data = lisp_cdr(lisp_car(level_cur));
1131
1132           if (strcmp(lisp_symbol(sym), "level") == 0)
1133             {
1134               std::string name;
1135               bool solved = false;
1136
1137               LispReader level_reader(data);
1138               level_reader.read_string("name", name, true);
1139               level_reader.read_bool("solved", solved);
1140
1141               for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
1142                 {
1143                   if (name == i->name)
1144                     i->solved = solved;
1145                 }
1146             }
1147
1148           level_cur = lisp_cdr(level_cur);
1149         }
1150     }
1151
1152   lisp_free(savegame);
1153 }
1154
1155 void
1156 WorldMap::loadmap(const std::string& filename)
1157 {
1158   savegame_file = "";
1159   map_filename = filename;
1160   load_map();
1161 }
1162
1163 } // namespace WorldMapNS
1164
1165 /* Local Variables: */
1166 /* mode:c++ */
1167 /* End: */
1168