src/worldmap.cpp

   1 //  $Id$
   2 //
   3 //  SuperTux -  A Jump'n Run
   4 //  Copyright (C) 2004 Ingo Ruhnke <grumbel@gmx.de>
   5 //
   6 //  This program is free software; you can redistribute it and/or
   7 //  modify it under the terms of the GNU General Public License
   8 //  as published by the Free Software Foundation; either version 2
   9 //  of the License, or (at your option) any later version.
  10 //
  11 //  This program is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //  GNU General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU General Public License
  17 //  along with this program; if not, write to the Free Software
  18 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19
  20 #include <iostream>
  21 #include <fstream>
  22 #include <vector>
  23 #include <cassert>
  24 #include <unistd.h>
  25
  26 #include "app/globals.h"
  27 #include "video/surface.h"
  28 #include "video/screen.h"
  29 #include "video/drawing_context.h"
  30 #include "utils/lispreader.h"
  31 #include "special/frame_rate.h"
  32 #include "gameloop.h"
  33 #include "app/setup.h"
  34 #include "sector.h"
  35 #include "worldmap.h"
  36 #include "audio/sound_manager.h"
  37 #include "resources.h"
  38 #include "app/gettext.h"
  39 #include "misc.h"
  40
  41 #define map_message_TIME 2800
  42
  43 Menu* worldmap_menu  = 0;
  44
  45 namespace WorldMapNS {
  46
  47 Direction reverse_dir(Direction direction)
  48 {
  49   switch(direction)
  50     {
  51     case D_WEST:
  52       return D_EAST;
  53     case D_EAST:
  54       return D_WEST;
  55     case D_NORTH:
  56       return D_SOUTH;
  57     case D_SOUTH:
  58       return D_NORTH;
  59     case D_NONE:
  60       return D_NONE;
  61     }
  62   return D_NONE;
  63 }
  64
  65 std::string
  66 direction_to_string(Direction direction)
  67 {
  68   switch(direction)
  69     {
  70     case D_WEST:
  71       return "west";
  72     case D_EAST:
  73       return "east";
  74     case D_NORTH:
  75       return "north";
  76     case D_SOUTH:
  77       return "south";
  78     default:
  79       return "none";
  80     }
  81 }
  82
  83 Direction
  84 string_to_direction(const std::string& directory)
  85 {
  86   if (directory == "west")
  87     return D_WEST;
  88   else if (directory == "east")
  89     return D_EAST;
  90   else if (directory == "north")
  91     return D_NORTH;
  92   else if (directory == "south")
  93     return D_SOUTH;
  94   else
  95     return D_NONE;
  96 }
  97
  98 TileManager::TileManager()
  99 {
 100   std::string stwt_filename = datadir +  "/images/worldmap/antarctica.stwt";
 101   lisp_object_t* root_obj = lisp_read_from_file(stwt_filename);
 102
 103   if (!root_obj)
 104     Termination::abort("Couldn't load file", stwt_filename);
 105
 106   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap-tiles") == 0)
 107     {
 108       lisp_object_t* cur = lisp_cdr(root_obj);
 109
 110       while(!lisp_nil_p(cur))
 111         {
 112           lisp_object_t* element = lisp_car(cur);
 113
 114           if (strcmp(lisp_symbol(lisp_car(element)), "tile") == 0)
 115             {
 116               int id = 0;
 117               std::string filename = "<invalid>";
 118
 119               Tile* tile = new Tile;
 120               tile->north = tile->east = tile->south = tile->west = true;
 121               tile->stop  = true;
 122               tile->auto_walk = false;
 123
 124               LispReader reader(lisp_cdr(element));
 125               reader.read_int("id", id);
 126
 127               std::string temp;
 128               reader.read_string("possible-directions", temp);
 129               if(!temp.empty())
 130                 {
 131                 tile->north = tile->east = tile->south = tile->west = false;
 132                 if(temp.find("north") != std::string::npos)
 133                   tile->north = true;
 134                 if(temp.find("south") != std::string::npos)
 135                   tile->south = true;
 136                 if(temp.find("east") != std::string::npos)
 137                   tile->east = true;
 138                 if(temp.find("west") != std::string::npos)
 139                   tile->west = true;
 140                 }
 141
 142               /* For backward compatibility */
 143               reader.read_bool("north", tile->north);
 144               reader.read_bool("south", tile->south);
 145               reader.read_bool("west",  tile->west);
 146               reader.read_bool("east",  tile->east);
 147
 148               reader.read_bool("stop",  tile->stop);
 149               reader.read_bool("auto-walk",  tile->auto_walk);
 150               reader.read_string("image", filename);
 151
 152               reader.read_string("one-way", temp);
 153               tile->one_way = BOTH_WAYS;
 154               if(!temp.empty())
 155                 {
 156                 if(temp == "north-south")
 157                   tile->one_way = NORTH_SOUTH_WAY;
 158                 else if(temp == "south-north")
 159                   tile->one_way = SOUTH_NORTH_WAY;
 160                 else if(temp == "east-west")
 161                   tile->one_way = EAST_WEST_WAY;
 162                 else if(temp == "west-east")
 163                   tile->one_way = WEST_EAST_WAY;
 164                 }
 165
 166               tile->sprite = new Surface(
 167                            datadir +  "/images/worldmap/" + filename,
 168                            true);
 169
 170               if (id >= int(tiles.size()))
 171                 tiles.resize(id+1);
 172
 173               tiles[id] = tile;
 174             }
 175           else
 176             {
 177               puts("Unhandled symbol");
 178             }
 179
 180           cur = lisp_cdr(cur);
 181         }
 182     }
 183   else
 184     {
 185       assert(0);
 186     }
 187
 188   lisp_free(root_obj);
 189 }
 190
 191 TileManager::~TileManager()
 192 {
 193   for(std::vector<Tile*>::iterator i = tiles.begin(); i != tiles.end(); ++i)
 194     delete *i;
 195 }
 196
 197 Tile*
 198 TileManager::get(int i)
 199 {
 200   assert(i >=0 && i < int(tiles.size()));
 201   return tiles[i];
 202 }
 203
 204 //---------------------------------------------------------------------------
 205
 206 Tux::Tux(WorldMap* worldmap_)
 207   : worldmap(worldmap_)
 208 {
 209   largetux_sprite = new Surface(datadir +  "/images/worldmap/tux.png", true);
 210   firetux_sprite = new Surface(datadir +  "/images/worldmap/firetux.png", true);
 211   smalltux_sprite = new Surface(datadir +  "/images/worldmap/smalltux.png", true);
 212
 213   offset = 0;
 214   moving = false;
 215   tile_pos.x = worldmap->get_start_x();
 216   tile_pos.y = worldmap->get_start_y();
 217   direction = D_NONE;
 218   input_direction = D_NONE;
 219 }
 220
 221 Tux::~Tux()
 222 {
 223   delete smalltux_sprite;
 224   delete firetux_sprite;
 225   delete largetux_sprite;
 226 }
 227
 228 void
 229 Tux::draw(DrawingContext& context, const Vector& offset)
 230 {
 231   Vector pos = get_pos();
 232   switch (player_status.bonus)
 233     {
 234     case PlayerStatus::GROWUP_BONUS:
 235       context.draw_surface(largetux_sprite,
 236           Vector(pos.x + offset.x, pos.y + offset.y - 10), LAYER_OBJECTS);
 237       break;
 238     case PlayerStatus::FLOWER_BONUS:
 239       context.draw_surface(firetux_sprite,
 240           Vector(pos.x + offset.x, pos.y + offset.y - 10), LAYER_OBJECTS);
 241       break;
 242     case PlayerStatus::NO_BONUS:
 243       context.draw_surface(smalltux_sprite,
 244           Vector(pos.x + offset.x, pos.y + offset.y - 10), LAYER_OBJECTS);
 245       break;
 246     }
 247 }
 248
 249
 250 Vector
 251 Tux::get_pos()
 252 {
 253   float x = tile_pos.x * 32;
 254   float y = tile_pos.y * 32;
 255
 256   switch(direction)
 257     {
 258     case D_WEST:
 259       x -= offset - 32;
 260       break;
 261     case D_EAST:
 262       x += offset - 32;
 263       break;
 264     case D_NORTH:
 265       y -= offset - 32;
 266       break;
 267     case D_SOUTH:
 268       y += offset - 32;
 269       break;
 270     case D_NONE:
 271       break;
 272     }
 273
 274   return Vector((int)x, (int)y);
 275 }
 276
 277 void
 278 Tux::stop()
 279 {
 280   offset = 0;
 281   direction = D_NONE;
 282   input_direction = D_NONE;
 283   moving = false;
 284 }
 285
 286 void
 287 Tux::set_direction(Direction dir)
 288 {
 289 input_direction = dir;
 290 }
 291
 292 void
 293 Tux::action(float delta)
 294 {
 295   if (!moving)
 296     {
 297       if (input_direction != D_NONE)
 298         {
 299           WorldMap::SpecialTile* special_tile = worldmap->at_special_tile();
 300
 301           // We got a new direction, so lets start walking when possible
 302           Vector next_tile;
 303           if ((!special_tile || special_tile->solved || special_tile->level_name.empty())
 304               && worldmap->path_ok(input_direction, tile_pos, &next_tile))
 305             {
 306               tile_pos = next_tile;
 307               moving = true;
 308               direction = input_direction;
 309               back_direction = reverse_dir(direction);
 310             }
 311           else if (input_direction == back_direction)
 312             {
 313               moving = true;
 314               direction = input_direction;
 315               tile_pos = worldmap->get_next_tile(tile_pos, direction);
 316               back_direction = reverse_dir(direction);
 317             }
 318         }
 319     }
 320   else
 321     {
 322       // Let tux walk a few pixels (20 pixel/sec)
 323       offset += 20.0f * delta;
 324
 325       if (offset > 32)
 326         { // We reached the next tile, so we check what to do now
 327           offset -= 32;
 328
 329           WorldMap::SpecialTile* special_tile = worldmap->at_special_tile();
 330           if(special_tile && special_tile->passive_message)
 331             {  // direction and the apply_action_ are opposites, since they "see"
 332                // directions in a different way
 333             if((direction == D_NORTH && special_tile->apply_action_south) ||
 334                (direction == D_SOUTH && special_tile->apply_action_north) ||
 335                (direction == D_WEST && special_tile->apply_action_east) ||
 336                (direction == D_EAST && special_tile->apply_action_west))
 337               {
 338               worldmap->passive_message = special_tile->map_message;
 339               worldmap->passive_message_timer.start(map_message_TIME);
 340               }
 341             }
 342
 343           if (worldmap->at(tile_pos)->stop || (special_tile &&
 344               !special_tile->passive_message))
 345             {
 346               if(special_tile && !special_tile->map_message.empty() &&
 347                 !special_tile->passive_message)
 348                 worldmap->passive_message_timer.stop();
 349               stop();
 350             }
 351           else
 352             {
 353               if (worldmap->at(tile_pos)->auto_walk || direction != input_direction)
 354                 { // Turn to a new direction
 355                   Tile* tile = worldmap->at(tile_pos);
 356
 357                   if(direction != input_direction &&
 358                      ((tile->north && input_direction == D_NORTH) ||
 359                      (tile->south && input_direction == D_SOUTH) ||
 360                      (tile->east && input_direction == D_EAST) ||
 361                      (tile->west && input_direction == D_WEST)))
 362                     {  // player has changed direction during auto-movement
 363                     direction = input_direction;
 364                     back_direction = reverse_dir(direction);
 365                     }
 366                   else if(direction != input_direction)
 367                     {  // player has changed to impossible tile
 368                       back_direction = reverse_dir(direction);
 369                       stop();
 370                     }
 371                   else
 372                     {
 373                     Direction dir = D_NONE;
 374
 375                     if (tile->north && back_direction != D_NORTH)
 376                       dir = D_NORTH;
 377                     else if (tile->south && back_direction != D_SOUTH)
 378                       dir = D_SOUTH;
 379                     else if (tile->east && back_direction != D_EAST)
 380                       dir = D_EAST;
 381                     else if (tile->west && back_direction != D_WEST)
 382                       dir = D_WEST;
 383
 384                     if (dir != D_NONE)
 385                       {
 386                       direction = dir;
 387                       input_direction = direction;
 388                       back_direction = reverse_dir(direction);
 389                       }
 390                     else
 391                       {
 392                       // Should never be reached if tiledata is good
 393                       stop();
 394                       return;
 395                       }
 396                     }
 397                   }
 398
 399               // Walk automatically to the next tile
 400               if(direction != D_NONE)
 401                 {
 402                 Vector next_tile;
 403                 if (worldmap->path_ok(direction, tile_pos, &next_tile))
 404                   {
 405                   tile_pos = next_tile;
 406                   }
 407                 else
 408                   {
 409                   puts("Tilemap data is buggy");
 410                   stop();
 411                   }
 412                 }
 413             }
 414         }
 415     }
 416 }
 417
 418 //---------------------------------------------------------------------------
 419 Tile::Tile()
 420 {
 421 }
 422
 423 Tile::~Tile()
 424 {
 425   delete sprite;
 426 }
 427
 428 //---------------------------------------------------------------------------
 429
 430 WorldMap::WorldMap()
 431 {
 432   tile_manager = new TileManager();
 433   //tux = new Tux(this);
 434
 435   width  = 20;
 436   height = 15;
 437
 438   start_x = 4;
 439   start_y = 5;
 440
 441   leveldot_green = new Surface(datadir +  "/images/worldmap/leveldot_green.png", true);
 442   leveldot_red = new Surface(datadir +  "/images/worldmap/leveldot_red.png", true);
 443   messagedot   = new Surface(datadir +  "/images/worldmap/messagedot.png", true);
 444   teleporterdot   = new Surface(datadir +  "/images/worldmap/teleporterdot.png", true);
 445
 446   enter_level = false;
 447
 448   name = "<no title>";
 449   music = "SALCON.MOD";
 450 }
 451
 452 WorldMap::~WorldMap()
 453 {
 454   delete tux;
 455   delete tile_manager;
 456
 457   delete leveldot_green;
 458   delete leveldot_red;
 459   delete messagedot;
 460   delete teleporterdot;
 461 }
 462
 463 void
 464 WorldMap::load_map()
 465 {
 466   lisp_object_t* root_obj = lisp_read_from_file(datadir + "/levels/worldmap/" + map_filename);
 467   if (!root_obj)
 468     Termination::abort("Couldn't load file", datadir + "/levels/worldmap/" + map_filename);
 469
 470   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap") == 0)
 471     {
 472       lisp_object_t* cur = lisp_cdr(root_obj);
 473
 474       while(!lisp_nil_p(cur))
 475         {
 476           lisp_object_t* element = lisp_car(cur);
 477
 478           if (strcmp(lisp_symbol(lisp_car(element)), "tilemap") == 0)
 479             {
 480               LispReader reader(lisp_cdr(element));
 481               reader.read_int("width",  width);
 482               reader.read_int("height", height);
 483               reader.read_int_vector("data", tilemap);
 484             }
 485           else if (strcmp(lisp_symbol(lisp_car(element)), "properties") == 0)
 486             {
 487               LispReader reader(lisp_cdr(element));
 488               reader.read_string("name", name, true);
 489               reader.read_string("music", music);
 490               reader.read_int("start_pos_x", start_x);
 491               reader.read_int("start_pos_y", start_y);
 492             }
 493           else if (strcmp(lisp_symbol(lisp_car(element)), "special-tiles") == 0 ||
 494                    strcmp(lisp_symbol(lisp_car(element)), "levels") == 0)
 495             {
 496               lisp_object_t* cur = lisp_cdr(element);
 497
 498               while(!lisp_nil_p(cur))
 499                 {
 500                   lisp_object_t* element = lisp_car(cur);
 501
 502                   if (strcmp(lisp_symbol(lisp_car(element)), "special-tile") == 0)
 503                     {
 504                       SpecialTile special_tile;
 505                       LispReader reader(lisp_cdr(element));
 506                       special_tile.solved = false;
 507
 508                       special_tile.north = true;
 509                       special_tile.east  = true;
 510                       special_tile.south = true;
 511                       special_tile.west  = true;
 512
 513                       reader.read_int("x", special_tile.x);
 514                       reader.read_int("y", special_tile.y);
 515                       reader.read_string("level", special_tile.level_name, true);
 516
 517                       special_tile.vertical_flip = false;
 518                       reader.read_bool("vertical-flip", special_tile.vertical_flip);
 519
 520                       special_tile.map_message.erase();
 521                       reader.read_string("map-message", special_tile.map_message);
 522                       special_tile.passive_message = false;
 523                       reader.read_bool("passive-message", special_tile.passive_message);
 524
 525                       special_tile.teleport_dest_x = special_tile.teleport_dest_y = -1;
 526                       reader.read_int("teleport-to-x", special_tile.teleport_dest_x);
 527                       reader.read_int("teleport-to-y", special_tile.teleport_dest_y);
 528
 529                       special_tile.invisible = false;
 530                       reader.read_bool("invisible-tile", special_tile.invisible);
 531
 532                       special_tile.apply_action_north = special_tile.apply_action_south =
 533                           special_tile.apply_action_east = special_tile.apply_action_west =
 534                           true;
 535                       std::string apply_direction;
 536                       reader.read_string("apply-to-direction", apply_direction);
 537                       if(!apply_direction.empty())
 538                         {
 539                         special_tile.apply_action_north = special_tile.apply_action_south =
 540                             special_tile.apply_action_east = special_tile.apply_action_west =
 541                             false;
 542                         if(apply_direction.find("north") != std::string::npos)
 543                           special_tile.apply_action_north = true;
 544                         if(apply_direction.find("south") != std::string::npos)
 545                           special_tile.apply_action_south = true;
 546                         if(apply_direction.find("east") != std::string::npos)
 547                           special_tile.apply_action_east = true;
 548                         if(apply_direction.find("west") != std::string::npos)
 549                           special_tile.apply_action_west = true;
 550                         }
 551
 552                       reader.read_string("extro-filename", special_tile.extro_filename);
 553                       reader.read_string("next-world", special_tile.next_worldmap);
 554                       special_tile.quit_worldmap = false;
 555                       reader.read_bool("exit-game", special_tile.quit_worldmap);
 556
 557                       special_tile.auto_path = true;
 558                       reader.read_bool("auto-path", special_tile.auto_path);
 559
 560                       special_tiles.push_back(special_tile);
 561                     }
 562
 563                   /* Kept for backward compability */
 564                   else if (strcmp(lisp_symbol(lisp_car(element)), "level") == 0)
 565                     {
 566                       SpecialTile special_tile;
 567                       LispReader reader(lisp_cdr(element));
 568                       special_tile.solved = false;
 569
 570                       special_tile.north = true;
 571                       special_tile.east  = true;
 572                       special_tile.south = true;
 573                       special_tile.west  = true;
 574
 575                       special_tile.invisible = false;
 576
 577                       special_tile.apply_action_north = special_tile.apply_action_south =
 578                           special_tile.apply_action_east = special_tile.apply_action_west =
 579                           true;
 580                       special_tile.vertical_flip = false;
 581                       special_tile.teleport_dest_x = special_tile.teleport_dest_y = -1;
 582
 583                       reader.read_string("extro-filename", special_tile.extro_filename);
 584                       if(!special_tile.extro_filename.empty())
 585                         special_tile.quit_worldmap = true;
 586                       reader.read_string("name", special_tile.level_name, true);
 587                       reader.read_int("x", special_tile.x);
 588                       reader.read_int("y", special_tile.y);
 589
 590
 591                       special_tiles.push_back(special_tile);
 592                     }
 593
 594                   cur = lisp_cdr(cur);
 595                 }
 596             }
 597           else
 598             {
 599
 600             }
 601
 602           cur = lisp_cdr(cur);
 603         }
 604     }
 605
 606     lisp_free(root_obj);
 607     tux = new Tux(this);
 608 }
 609
 610 void WorldMap::get_level_title(SpecialTile& special_tile)
 611 {
 612   /** get special_tile's title */
 613   special_tile.title = "<no title>";
 614
 615   LispReader* reader = LispReader::load(datadir + "/levels/" + special_tile.level_name, "supertux-level");
 616   if(!reader)
 617     {
 618     std::cerr << "Error: Could not open level file. Ignoring...\n";
 619     return;
 620     }
 621
 622   reader->read_string("name", special_tile.title, true);
 623   delete reader;
 624 }
 625
 626 void
 627 WorldMap::on_escape_press()
 628 {
 629   // Show or hide the menu
 630   if(!Menu::current())
 631     {
 632     Menu::set_current(worldmap_menu);
 633     tux->set_direction(D_NONE);  // stop tux movement when menu is called
 634     }
 635   else
 636     Menu::set_current(0);
 637 }
 638
 639 void
 640 WorldMap::get_input()
 641 {
 642   enter_level = false;
 643
 644   SDL_Event event;
 645   while (SDL_PollEvent(&event))
 646     {
 647       if (Menu::current())
 648         {
 649           Menu::current()->event(event);
 650         }
 651       else
 652         {
 653           switch(event.type)
 654             {
 655             case SDL_QUIT:
 656               Termination::abort("Received window close", "");
 657               break;
 658
 659             case SDL_KEYDOWN:
 660               switch(event.key.keysym.sym)
 661                 {
 662                 case SDLK_ESCAPE:
 663                   on_escape_press();
 664                   break;
 665                 case SDLK_LCTRL:
 666                 case SDLK_RETURN:
 667                   enter_level = true;
 668                   break;
 669
 670                 case SDLK_LEFT:
 671                   tux->set_direction(D_WEST);
 672                   break;
 673                 case SDLK_RIGHT:
 674                   tux->set_direction(D_EAST);
 675                   break;
 676                 case SDLK_UP:
 677                   tux->set_direction(D_NORTH);
 678                   break;
 679                 case SDLK_DOWN:
 680                   tux->set_direction(D_SOUTH);
 681                   break;
 682
 683                 default:
 684                   break;
 685                 }
 686               break;
 687
 688             case SDL_JOYAXISMOTION:
 689               if (event.jaxis.axis == joystick_keymap.x_axis)
 690                 {
 691                   if (event.jaxis.value < -joystick_keymap.dead_zone)
 692                     tux->set_direction(D_WEST);
 693                   else if (event.jaxis.value > joystick_keymap.dead_zone)
 694                     tux->set_direction(D_EAST);
 695                 }
 696               else if (event.jaxis.axis == joystick_keymap.y_axis)
 697                 {
 698                   if (event.jaxis.value > joystick_keymap.dead_zone)
 699                     tux->set_direction(D_SOUTH);
 700                   else if (event.jaxis.value < -joystick_keymap.dead_zone)
 701                     tux->set_direction(D_NORTH);
 702                 }
 703               break;
 704
 705             case SDL_JOYBUTTONDOWN:
 706               if (event.jbutton.button == joystick_keymap.b_button)
 707                 enter_level = true;
 708               else if (event.jbutton.button == joystick_keymap.start_button)
 709                 on_escape_press();
 710               break;
 711
 712             default:
 713               break;
 714             }
 715         }
 716     }
 717 }
 718
 719 Vector
 720 WorldMap::get_next_tile(Vector pos, Direction direction)
 721 {
 722   switch(direction)
 723     {
 724     case D_WEST:
 725       pos.x -= 1;
 726       break;
 727     case D_EAST:
 728       pos.x += 1;
 729       break;
 730     case D_NORTH:
 731       pos.y -= 1;
 732       break;
 733     case D_SOUTH:
 734       pos.y += 1;
 735       break;
 736     case D_NONE:
 737       break;
 738     }
 739   return pos;
 740 }
 741
 742 bool
 743 WorldMap::path_ok(Direction direction, Vector old_pos, Vector* new_pos)
 744 {
 745   *new_pos = get_next_tile(old_pos, direction);
 746
 747   if (!(new_pos->x >= 0 && new_pos->x < width
 748         && new_pos->y >= 0 && new_pos->y < height))
 749     { // New position is outsite the tilemap
 750       return false;
 751     }
 752   else if(at(*new_pos)->one_way != BOTH_WAYS)
 753     {
 754 std::cerr << "one way only\n";
 755       if((at(*new_pos)->one_way == NORTH_SOUTH_WAY && direction != D_SOUTH) ||
 756          (at(*new_pos)->one_way == SOUTH_NORTH_WAY && direction != D_NORTH) ||
 757          (at(*new_pos)->one_way == EAST_WEST_WAY && direction != D_WEST) ||
 758          (at(*new_pos)->one_way == WEST_EAST_WAY && direction != D_EAST))
 759         return false;
 760       return true;
 761     }
 762   else
 763     { // Check if we the tile allows us to go to new_pos
 764       switch(direction)
 765         {
 766         case D_WEST:
 767           return (at(old_pos)->west && at(*new_pos)->east);
 768
 769         case D_EAST:
 770           return (at(old_pos)->east && at(*new_pos)->west);
 771
 772         case D_NORTH:
 773           return (at(old_pos)->north && at(*new_pos)->south);
 774
 775         case D_SOUTH:
 776           return (at(old_pos)->south && at(*new_pos)->north);
 777
 778         case D_NONE:
 779           assert(!"path_ok() can't work if direction is NONE");
 780         }
 781       return false;
 782     }
 783 }
 784
 785 void
 786 WorldMap::update(float delta)
 787 {
 788   if (enter_level && !tux->is_moving())
 789     {
 790       bool level_finished = true;
 791       SpecialTile* special_tile = at_special_tile();
 792       if (!special_tile)
 793         {
 794         std::cout << "Nothing to enter at: "
 795           << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << std::endl;
 796         return;
 797         }
 798
 799
 800       if(!special_tile->level_name.empty())
 801         {
 802           if (special_tile->x == tux->get_tile_pos().x &&
 803               special_tile->y == tux->get_tile_pos().y)
 804             {
 805               PlayerStatus old_player_status = player_status;
 806
 807               std::cout << "Enter the current level: " << special_tile->level_name << std::endl;
 808               // do a shriking fade to the special_tile
 809               shrink_fade(Vector((special_tile->x*32 + 16 + offset.x),(special_tile->y*32 + 16
 810                       + offset.y)), 500);
 811               GameSession session(datadir +  "/levels/" + special_tile->level_name,
 812                                   ST_GL_LOAD_LEVEL_FILE, special_tile->vertical_flip);
 813
 814               switch (session.run())
 815                 {
 816                 case GameSession::ES_LEVEL_FINISHED:
 817                   {
 818                     level_finished = true;
 819                     bool old_level_state = special_tile->solved;
 820                     special_tile->solved = true;
 821
 822                     if (session.get_current_sector()->player->got_power !=
 823                           session.get_current_sector()->player->NONE_POWER)
 824                       player_status.bonus = PlayerStatus::FLOWER_BONUS;
 825                     else if (session.get_current_sector()->player->size == BIG)
 826                       player_status.bonus = PlayerStatus::GROWUP_BONUS;
 827                     else
 828                       player_status.bonus = PlayerStatus::NO_BONUS;
 829
 830                     if (old_level_state != special_tile->solved && special_tile->auto_path)
 831                       { // Try to detect the next direction to which we should walk
 832                         // FIXME: Mostly a hack
 833                         Direction dir = D_NONE;
 834
 835                         Tile* tile = at(tux->get_tile_pos());
 836
 837                         if (tile->north && tux->back_direction != D_NORTH)
 838                           dir = D_NORTH;
 839                         else if (tile->south && tux->back_direction != D_SOUTH)
 840                           dir = D_SOUTH;
 841                         else if (tile->east && tux->back_direction != D_EAST)
 842                           dir = D_EAST;
 843                         else if (tile->west && tux->back_direction != D_WEST)
 844                           dir = D_WEST;
 845
 846                         if (dir != D_NONE)
 847                           {
 848                             tux->set_direction(dir);
 849                             //tux->update(delta);
 850                           }
 851
 852                         std::cout << "Walk to dir: " << dir << std::endl;
 853                       }
 854                   }
 855
 856                   break;
 857                 case GameSession::ES_LEVEL_ABORT:
 858                   level_finished = false;
 859                   /* In case the player's abort the special_tile, keep it using the old
 860                       status. But the minimum lives and no bonus. */
 861                   player_status.score = old_player_status.score;
 862                   player_status.distros = old_player_status.distros;
 863                   player_status.lives = std::min(old_player_status.lives, player_status.lives);
 864                   player_status.bonus = player_status.NO_BONUS;
 865
 866                   break;
 867                 case GameSession::ES_GAME_OVER:
 868                   {
 869                   level_finished = false;
 870                   /* draw an end screen */
 871                   /* in the future, this should make a dialog a la SuperMario, asking
 872                   if the player wants to restart the world map with no score and from
 873                   special_tile 1 */
 874                   char str[80];
 875
 876                   DrawingContext context;
 877                   context.draw_gradient(Color (200,240,220), Color(200,200,220),
 878                       LAYER_BACKGROUND0);
 879
 880                   context.draw_text_center(blue_text, _("GAMEOVER"),
 881                       Vector(0, 200), LAYER_FOREGROUND1);
 882
 883                   sprintf(str, _("SCORE: %d"), player_status.score);
 884                   context.draw_text_center(gold_text, str,
 885                       Vector(0, 230), LAYER_FOREGROUND1);
 886
 887                   sprintf(str, _("COINS: %d"), player_status.distros);
 888                   context.draw_text_center(gold_text, str,
 889                       Vector(0, screen->w - 32), LAYER_FOREGROUND1);
 890
 891                   context.do_drawing();
 892
 893                   SDL_Event event;
 894                   wait_for_event(event,2000,5000,true);
 895
 896                   quit = true;
 897                   player_status.reset();
 898                   break;
 899                   }
 900                 case GameSession::ES_NONE:
 901                   assert(false);
 902                   // Should never be reached
 903                   break;
 904                 }
 905
 906               SoundManager::get()->play_music(song);
 907               Menu::set_current(0);
 908               if (!savegame_file.empty())
 909                 savegame(savegame_file);
 910             }
 911         }
 912       /* The porpose of the next checking is that if the player lost
 913          the special_tile (in case there is one), don't show anything */
 914       if(level_finished)
 915         {
 916         if (!special_tile->extro_filename.empty())
 917           {
 918           // Display a text file
 919           display_text_file(special_tile->extro_filename, SCROLL_SPEED_MESSAGE, white_big_text , white_text, white_small_text, blue_text );
 920           }
 921         if (special_tile->teleport_dest_x != -1 && special_tile->teleport_dest_y != -1)
 922           {
 923           // TODO: an animation, camera scrolling or a fading would be a nice touch
 924           SoundManager::get()->play_sound(IDToSound(SND_WARP));
 925           tux->back_direction = D_NONE;
 926           tux->set_tile_pos(Vector(special_tile->teleport_dest_x, special_tile->teleport_dest_y));
 927           SDL_Delay(1000);
 928           }
 929         if (!special_tile->next_worldmap.empty())
 930           {
 931           // Load given worldmap
 932           loadmap(special_tile->next_worldmap);
 933           }
 934         if (special_tile->quit_worldmap)
 935           quit = true;
 936         }
 937     }
 938   else
 939     {
 940       tux->action(delta);
 941 //      tux->set_direction(input_direction);
 942     }
 943
 944   Menu* menu = Menu::current();
 945   if(menu)
 946     {
 947       menu->action();
 948
 949       if(menu == worldmap_menu)
 950         {
 951           switch (worldmap_menu->check())
 952             {
 953             case MNID_RETURNWORLDMAP: // Return to game
 954               break;
 955             case MNID_QUITWORLDMAP: // Quit Worldmap
 956               quit = true;
 957               break;
 958             }
 959         }
 960       else if(menu == options_menu)
 961         {
 962           process_options_menu();
 963         }
 964     }
 965 }
 966
 967 Tile*
 968 WorldMap::at(Vector p)
 969 {
 970   assert(p.x >= 0
 971          && p.x < width
 972          && p.y >= 0
 973          && p.y < height);
 974
 975   int x = int(p.x);
 976   int y = int(p.y);
 977   return tile_manager->get(tilemap[width * y + x]);
 978 }
 979
 980 WorldMap::SpecialTile*
 981 WorldMap::at_special_tile()
 982 {
 983   for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
 984     {
 985       if (i->x == tux->get_tile_pos().x &&
 986           i->y == tux->get_tile_pos().y)
 987         return &*i;
 988     }
 989
 990   return 0;
 991 }
 992
 993
 994 void
 995 WorldMap::draw(DrawingContext& context, const Vector& offset)
 996 {
 997   for(int y = 0; y < height; ++y)
 998     for(int x = 0; x < width; ++x)
 999       {
1000         Tile* tile = at(Vector(x, y));
1001         context.draw_surface(tile->sprite,
1002             Vector(x*32 + offset.x, y*32 + offset.y), LAYER_TILES);
1003       }
1004
1005   for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
1006     {
1007       if(i->invisible)
1008         continue;
1009       if(i->level_name.empty())
1010         {
1011         if (i->teleport_dest_x != -1 && i->teleport_dest_y != -1)
1012           context.draw_surface(teleporterdot,
1013               Vector(i->x*32 + offset.x, i->y*32 + offset.y), LAYER_TILES+1);
1014
1015         else if (!i->map_message.empty() && !i->passive_message)
1016           context.draw_surface(messagedot,
1017               Vector(i->x*32 + offset.x, i->y*32 + offset.y), LAYER_TILES+1);
1018
1019         continue;
1020         }
1021
1022       if (i->solved)
1023         context.draw_surface(leveldot_green,
1024             Vector(i->x*32 + offset.x, i->y*32 + offset.y), LAYER_TILES+1);
1025       else
1026         context.draw_surface(leveldot_red,
1027             Vector(i->x*32 + offset.x, i->y*32 + offset.y), LAYER_TILES+1);
1028     }
1029
1030   tux->draw(context, offset);
1031   draw_status(context);
1032 }
1033
1034 void
1035 WorldMap::draw_status(DrawingContext& context)
1036 {
1037   char str[80];
1038   sprintf(str, " %d", player_status.score);
1039
1040   context.draw_text(white_text, _("SCORE"), Vector(0, 0), LAYER_FOREGROUND1);
1041   context.draw_text(gold_text, str, Vector(96, 0), LAYER_FOREGROUND1);
1042
1043   sprintf(str, "%d", player_status.distros);
1044   context.draw_text(white_text, _("COINS"), Vector(screen->w/2 - 16*5, 0),
1045       LAYER_FOREGROUND1);
1046   context.draw_text(gold_text, str, Vector(screen->w/2 + (16*5)/2, 0),
1047         LAYER_FOREGROUND1);
1048
1049   if (player_status.lives >= 5)
1050     {
1051       sprintf(str, "%dx", player_status.lives);
1052       context.draw_text(gold_text, str,
1053           Vector(screen->w - gold_text->get_text_width(str) - tux_life->w, 0),
1054           LAYER_FOREGROUND1);
1055       context.draw_surface(tux_life, Vector(screen->w -
1056             gold_text->get_text_width("9"), 0), LAYER_FOREGROUND1);
1057     }
1058   else
1059     {
1060       for(int i= 0; i < player_status.lives; ++i)
1061         context.draw_surface(tux_life,
1062             Vector(screen->w - tux_life->w*4 + (tux_life->w*i), 0),
1063             LAYER_FOREGROUND1);
1064     }
1065   context.draw_text(white_text, _("LIVES"),
1066       Vector(screen->w - white_text->get_text_width(_("LIVES")) - white_text->get_text_width("   99"), 0),
1067       LAYER_FOREGROUND1);
1068
1069   if (!tux->is_moving())
1070     {
1071       for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
1072         {
1073           if (i->x == tux->get_tile_pos().x &&
1074               i->y == tux->get_tile_pos().y)
1075             {
1076               if(!i->level_name.empty())
1077                 {
1078                 if(i->title == "")
1079                   get_level_title(*i);
1080
1081                 context.draw_text_center(white_text, i->title,
1082                     Vector(0, screen->h - white_text->get_height() - 30),
1083                     LAYER_FOREGROUND1);
1084                 }
1085
1086               /* Display an in-map message in the map, if any as been selected */
1087               if(!i->map_message.empty() && !i->passive_message)
1088                 context.draw_text_center(gold_text, i->map_message,
1089                     Vector(0, screen->h - white_text->get_height() - 60),
1090                     LAYER_FOREGROUND1);
1091               break;
1092             }
1093         }
1094     }
1095   /* Display a passive message in the map, if needed */
1096   if(passive_message_timer.check())
1097     context.draw_text_center(gold_text, passive_message,
1098             Vector(0, screen->h - white_text->get_height() - 60),
1099             LAYER_FOREGROUND1);
1100 }
1101
1102 void
1103 WorldMap::display()
1104 {
1105   Menu::set_current(0);
1106
1107   quit = false;
1108
1109   song = SoundManager::get()->load_music(datadir +  "/music/" + music);
1110   SoundManager::get()->play_music(song);
1111
1112   FrameRate frame_rate(10);
1113   frame_rate.set_frame_limit(false);
1114
1115   frame_rate.start();
1116
1117   DrawingContext context;
1118   while(!quit)
1119     {
1120       float delta = frame_rate.get();
1121
1122       delta *= 1.3f;
1123
1124       if (delta > 10.0f)
1125         delta = .3f;
1126
1127       frame_rate.update();
1128
1129       Vector tux_pos = tux->get_pos();
1130       if (1)
1131         {
1132           offset.x = -tux_pos.x + screen->w/2;
1133           offset.y = -tux_pos.y + screen->h/2;
1134
1135           if (offset.x > 0) offset.x = 0;
1136           if (offset.y > 0) offset.y = 0;
1137
1138           if (offset.x < screen->w - width*32) offset.x = screen->w - width*32;
1139           if (offset.y < screen->h - height*32) offset.y = screen->h - height*32;
1140         }
1141
1142       draw(context, offset);
1143       get_input();
1144       update(delta);
1145
1146       if(Menu::current())
1147         {
1148           Menu::current()->draw(context);
1149           mouse_cursor->draw(context);
1150         }
1151
1152       context.do_drawing();
1153
1154       SDL_Delay(20);
1155     }
1156 }
1157
1158 void
1159 WorldMap::savegame(const std::string& filename)
1160 {
1161   if(filename == "")
1162     return;
1163
1164   std::cout << "savegame: " << filename << std::endl;
1165   std::ofstream out(filename.c_str());
1166
1167   int nb_solved_levels = 0;
1168   for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
1169     {
1170       if (i->solved)
1171         ++nb_solved_levels;
1172     }
1173
1174   out << "(supertux-savegame\n"
1175       << "  (version 1)\n"
1176       << "  (title  \"" << name << " - " << nb_solved_levels << "/" << special_tiles.size() << "\")\n"
1177       << "  (map    \"" << map_filename << "\")\n"
1178       << "  (lives   " << player_status.lives << ")\n"
1179       << "  (score   " << player_status.score << ")\n"
1180       << "  (distros " << player_status.distros << ")\n"
1181       << "  (tux (x " << tux->get_tile_pos().x << ") (y " << tux->get_tile_pos().y << ")\n"
1182       << "       (back \"" << direction_to_string(tux->back_direction) << "\")\n"
1183       << "       (bonus \"" << bonus_to_string(player_status.bonus) <<  "\"))\n"
1184       << "  (levels\n";
1185
1186   for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
1187     {
1188       if (i->solved && !i->level_name.empty())
1189         {
1190           out << "     (level (name \"" << i->level_name << "\")\n"
1191               << "            (solved #t))\n";
1192         }
1193     }
1194
1195   out << "   )\n"
1196       << " )\n\n;; EOF ;;" << std::endl;
1197 }
1198
1199 void
1200 WorldMap::loadgame(const std::string& filename)
1201 {
1202   std::cout << "loadgame: " << filename << std::endl;
1203   savegame_file = filename;
1204   map_filename = "icyisland.stwm";
1205
1206   if (access(filename.c_str(), F_OK) != 0)
1207     {
1208     load_map();
1209     return;
1210     }
1211
1212   lisp_object_t* savegame = lisp_read_from_file(filename);
1213   if (!savegame)
1214     {
1215       std::cout << "WorldMap:loadgame: File not found: " << filename << std::endl;
1216       load_map();
1217       return;
1218     }
1219
1220   lisp_object_t* cur = savegame;
1221
1222   if (strcmp(lisp_symbol(lisp_car(cur)), "supertux-savegame") != 0)
1223     {
1224     load_map();
1225     return;
1226     }
1227
1228   cur = lisp_cdr(cur);
1229   LispReader reader(cur);
1230
1231   /* Get the Map filename and then load it before setting special_tile settings */
1232   reader.read_string("map", map_filename);
1233   load_map();
1234
1235   reader.read_int("lives", player_status.lives);
1236   reader.read_int("score", player_status.score);
1237   reader.read_int("distros", player_status.distros);
1238
1239   if (player_status.lives < 0)
1240     player_status.lives = START_LIVES;
1241
1242   lisp_object_t* tux_cur = 0;
1243   if (reader.read_lisp("tux", tux_cur))
1244     {
1245       Vector p;
1246       std::string back_str = "none";
1247       std::string bonus_str = "none";
1248
1249       LispReader tux_reader(tux_cur);
1250       tux_reader.read_float("x", p.x);
1251       tux_reader.read_float("y", p.y);
1252       tux_reader.read_string("back", back_str);
1253       tux_reader.read_string("bonus", bonus_str);
1254
1255       player_status.bonus = string_to_bonus(bonus_str);
1256       tux->back_direction = string_to_direction(back_str);
1257       tux->set_tile_pos(p);
1258     }
1259
1260   lisp_object_t* level_cur = 0;
1261   if (reader.read_lisp("levels", level_cur))
1262     {
1263       while(level_cur)
1264         {
1265           lisp_object_t* sym  = lisp_car(lisp_car(level_cur));
1266           lisp_object_t* data = lisp_cdr(lisp_car(level_cur));
1267
1268           if (strcmp(lisp_symbol(sym), "level") == 0)
1269             {
1270               std::string name;
1271               bool solved = false;
1272
1273               LispReader level_reader(data);
1274               level_reader.read_string("name", name, true);
1275               level_reader.read_bool("solved", solved);
1276
1277               for(SpecialTiles::iterator i = special_tiles.begin(); i != special_tiles.end(); ++i)
1278                 {
1279                   if (name == i->level_name)
1280                     i->solved = solved;
1281                 }
1282             }
1283
1284           level_cur = lisp_cdr(level_cur);
1285         }
1286     }
1287
1288   lisp_free(savegame);
1289 }
1290
1291 void
1292 WorldMap::loadmap(const std::string& filename)
1293 {
1294   savegame_file = "";
1295   map_filename = filename;
1296   load_map();
1297 }
1298
1299 } // namespace WorldMapNS
1300
1301 /* Local Variables: */
1302 /* mode:c++ */
1303 /* End: */
1304