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