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