src/worldmap/worldmap.cpp

   1 //  $Id$
   2 //
   3 //  SuperTux -  A Jump'n Run
   4 //  Copyright (C) 2004 Ingo Ruhnke <grumbel@gmx.de>
   5 //  Copyright (C) 2006 Christoph Sommer <christoph.sommer@2006.expires.deltadevelopment.de>
   6 //
   7 //  This program is free software; you can redistribute it and/or
   8 //  modify it under the terms of the GNU General Public License
   9 //  as published by the Free Software Foundation; either version 2
  10 //  of the License, or (at your option) any later version.
  11 //
  12 //  This program is distributed in the hope that it will be useful,
  13 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 //  GNU General Public License for more details.
  16 //
  17 //  You should have received a copy of the GNU General Public License
  18 //  along with this program; if not, write to the Free Software
  19 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20 #include <config.h>
  21
  22 #include <iostream>
  23 #include <fstream>
  24 #include <vector>
  25 #include <cassert>
  26 #include <stdexcept>
  27 #include <sstream>
  28 #include <unistd.h>
  29 #include <physfs.h>
  30
  31 #include "worldmap.hpp"
  32
  33 #include "gettext.hpp"
  34 #include "log.hpp"
  35 #include "mainloop.hpp"
  36 #include "shrinkfade.hpp"
  37 #include "video/surface.hpp"
  38 #include "video/drawing_context.hpp"
  39 #include "sprite/sprite.hpp"
  40 #include "sprite/sprite_manager.hpp"
  41 #include "audio/sound_manager.hpp"
  42 #include "lisp/parser.hpp"
  43 #include "lisp/lisp.hpp"
  44 #include "lisp/list_iterator.hpp"
  45 #include "lisp/writer.hpp"
  46 #include "game_session.hpp"
  47 #include "sector.hpp"
  48 #include "worldmap.hpp"
  49 #include "resources.hpp"
  50 #include "log.hpp"
  51 #include "world.hpp"
  52 #include "player_status.hpp"
  53 #include "textscroller.hpp"
  54 #include "main.hpp"
  55 #include "spawn_point.hpp"
  56 #include "file_system.hpp"
  57 #include "gui/menu.hpp"
  58 #include "gui/mousecursor.hpp"
  59 #include "control/joystickkeyboardcontroller.hpp"
  60 #include "object/background.hpp"
  61 #include "object/tilemap.hpp"
  62 #include "options_menu.hpp"
  63 #include "scripting/squirrel_error.hpp"
  64 #include "scripting/squirrel_util.hpp"
  65 #include "worldmap/level.hpp"
  66 #include "worldmap/special_tile.hpp"
  67 #include "worldmap/tux.hpp"
  68 #include "worldmap/sprite_change.hpp"
  69
  70 namespace WorldMapNS {
  71
  72 enum WorldMapMenuIDs {
  73   MNID_RETURNWORLDMAP,
  74   MNID_QUITWORLDMAP
  75 };
  76
  77 WorldMap* WorldMap::current_ = NULL;
  78
  79 Direction reverse_dir(Direction direction)
  80 {
  81   switch(direction)
  82     {
  83     case D_WEST:
  84       return D_EAST;
  85     case D_EAST:
  86       return D_WEST;
  87     case D_NORTH:
  88       return D_SOUTH;
  89     case D_SOUTH:
  90       return D_NORTH;
  91     case D_NONE:
  92       return D_NONE;
  93     }
  94   return D_NONE;
  95 }
  96
  97 std::string
  98 direction_to_string(Direction direction)
  99 {
 100   switch(direction)
 101     {
 102     case D_WEST:
 103       return "west";
 104     case D_EAST:
 105       return "east";
 106     case D_NORTH:
 107       return "north";
 108     case D_SOUTH:
 109       return "south";
 110     default:
 111       return "none";
 112     }
 113 }
 114
 115 Direction
 116 string_to_direction(const std::string& directory)
 117 {
 118   if (directory == "west")
 119     return D_WEST;
 120   else if (directory == "east")
 121     return D_EAST;
 122   else if (directory == "north")
 123     return D_NORTH;
 124   else if (directory == "south")
 125     return D_SOUTH;
 126   else if (directory == "none")
 127     return D_NONE;
 128   else {
 129     log_warning << "unknown direction: \"" << directory << "\"" << std::endl;
 130     return D_NONE;
 131   }
 132 }
 133
 134 //---------------------------------------------------------------------------
 135
 136 WorldMap::WorldMap(const std::string& filename, const std::string& force_spawnpoint)
 137   : tux(0), ambient_light( 1.0f, 1.0f, 1.0f, 1.0f ), force_spawnpoint(force_spawnpoint), in_level(false)
 138 {
 139   tile_manager.reset(new TileManager("images/worldmap.strf"));
 140
 141   tux = new Tux(this);
 142   add_object(tux);
 143
 144   name = "<no title>";
 145   music = "music/salcon.ogg";
 146
 147   total_stats.reset();
 148
 149   worldmap_menu.reset(new Menu());
 150   worldmap_menu->add_label(_("Pause"));
 151   worldmap_menu->add_hl();
 152   worldmap_menu->add_entry(MNID_RETURNWORLDMAP, _("Continue"));
 153   worldmap_menu->add_submenu(_("Options"), get_options_menu());
 154   worldmap_menu->add_hl();
 155   worldmap_menu->add_entry(MNID_QUITWORLDMAP, _("Quit World"));
 156
 157   // create a new squirrel table for the worldmap
 158   using namespace Scripting;
 159
 160   sq_collectgarbage(global_vm);
 161   sq_newtable(global_vm);
 162   sq_pushroottable(global_vm);
 163   if(SQ_FAILED(sq_setdelegate(global_vm, -2)))
 164     throw Scripting::SquirrelError(global_vm, "Couldn't set worldmap_table delegate");
 165
 166   sq_resetobject(&worldmap_table);
 167   if(SQ_FAILED(sq_getstackobj(global_vm, -1, &worldmap_table)))
 168     throw Scripting::SquirrelError(global_vm, "Couldn't get table from stack");
 169
 170   sq_addref(global_vm, &worldmap_table);
 171   sq_pop(global_vm, 1);
 172
 173   // load worldmap objects
 174   load(filename);
 175 }
 176
 177 WorldMap::~WorldMap()
 178 {
 179   using namespace Scripting;
 180
 181   for(GameObjects::iterator i = game_objects.begin();
 182       i != game_objects.end(); ++i) {
 183     GameObject* object = *i;
 184     try_unexpose(object);
 185     object->unref();
 186   }
 187
 188   for(SpawnPoints::iterator i = spawn_points.begin();
 189       i != spawn_points.end(); ++i) {
 190     delete *i;
 191   }
 192
 193   for(ScriptList::iterator i = scripts.begin();
 194       i != scripts.end(); ++i) {
 195     HSQOBJECT& object = *i;
 196     sq_release(global_vm, &object);
 197   }
 198   sq_release(global_vm, &worldmap_table);
 199
 200   sq_collectgarbage(global_vm);
 201
 202   if(current_ == this)
 203     current_ = NULL;
 204 }
 205
 206 void
 207 WorldMap::add_object(GameObject* object)
 208 {
 209   TileMap* tilemap = dynamic_cast<TileMap*> (object);
 210   if(tilemap != 0 && tilemap->is_solid()) {
 211     solid_tilemaps.push_back(tilemap);
 212   }
 213
 214   object->ref();
 215   try_expose(object);
 216   game_objects.push_back(object);
 217 }
 218
 219 void
 220 WorldMap::try_expose(GameObject* object)
 221 {
 222   ScriptInterface* interface = dynamic_cast<ScriptInterface*> (object);
 223   if(interface != NULL) {
 224     HSQUIRRELVM vm = Scripting::global_vm;
 225     sq_pushobject(vm, worldmap_table);
 226     interface->expose(vm, -1);
 227     sq_pop(vm, 1);
 228   }
 229 }
 230
 231 void
 232 WorldMap::try_unexpose(GameObject* object)
 233 {
 234   ScriptInterface* interface = dynamic_cast<ScriptInterface*> (object);
 235   if(interface != NULL) {
 236     HSQUIRRELVM vm = Scripting::global_vm;
 237     SQInteger oldtop = sq_gettop(vm);
 238     sq_pushobject(vm, worldmap_table);
 239     try {
 240       interface->unexpose(vm, -1);
 241     } catch(std::exception& e) {
 242       log_warning << "Couldn't unregister object: " << e.what() << std::endl;
 243     }
 244     sq_settop(vm, oldtop);
 245   }
 246 }
 247
 248 void
 249 WorldMap::move_to_spawnpoint(const std::string& spawnpoint)
 250 {
 251   for(SpawnPoints::iterator i = spawn_points.begin(); i != spawn_points.end(); ++i) {
 252     SpawnPoint* sp = *i;
 253     if(sp->name == spawnpoint) {
 254       Vector p = sp->pos;
 255       tux->set_tile_pos(p);
 256       tux->set_direction(sp->auto_dir);
 257       return;
 258     }
 259   }
 260   log_warning << "Spawnpoint '" << spawnpoint << "' not found." << std::endl;
 261   if (spawnpoint != "main") {
 262     move_to_spawnpoint("main");
 263   }
 264 }
 265
 266 void
 267 WorldMap::change(const std::string& filename, const std::string& force_spawnpoint)
 268 {
 269   main_loop->exit_screen();
 270   main_loop->push_screen(new WorldMap(filename, force_spawnpoint));
 271 }
 272
 273 void
 274 WorldMap::load(const std::string& filename)
 275 {
 276   map_filename = filename;
 277   levels_path = FileSystem::dirname(map_filename);
 278
 279   try {
 280     lisp::Parser parser;
 281     const lisp::Lisp* root = parser.parse(map_filename);
 282
 283     const lisp::Lisp* lisp = root->get_lisp("supertux-level");
 284     if(!lisp)
 285       throw std::runtime_error("file isn't a supertux-level file.");
 286
 287     lisp->get("name", name);
 288
 289     const lisp::Lisp* sector = lisp->get_lisp("sector");
 290     if(!sector)
 291       throw std::runtime_error("No sector sepcified in worldmap file.");
 292
 293     lisp::ListIterator iter(sector);
 294     while(iter.next()) {
 295       if(iter.item() == "tilemap") {
 296         add_object(new TileMap(*(iter.lisp()), tile_manager.get()));
 297       } else if(iter.item() == "background") {
 298         add_object(new Background(*(iter.lisp())));
 299       } else if(iter.item() == "music") {
 300         iter.value()->get(music);
 301       } else if(iter.item() == "init-script") {
 302         iter.value()->get(init_script);
 303       } else if(iter.item() == "worldmap-spawnpoint") {
 304         SpawnPoint* sp = new SpawnPoint(iter.lisp());
 305         spawn_points.push_back(sp);
 306       } else if(iter.item() == "level") {
 307         LevelTile* level = new LevelTile(levels_path, iter.lisp());
 308         levels.push_back(level);
 309         add_object(level);
 310       } else if(iter.item() == "special-tile") {
 311         SpecialTile* special_tile = new SpecialTile(iter.lisp());
 312         special_tiles.push_back(special_tile);
 313         add_object(special_tile);
 314       } else if(iter.item() == "sprite-change") {
 315         SpriteChange* sprite_change = new SpriteChange(iter.lisp());
 316         sprite_changes.push_back(sprite_change);
 317         add_object(sprite_change);
 318       } else if(iter.item() == "teleporter") {
 319         Teleporter* teleporter = new Teleporter(iter.lisp());
 320         teleporters.push_back(teleporter);
 321         add_object(teleporter);
 322       } else if(iter.item() == "ambient-light") {
 323         std::vector<float> vColor;
 324         sector->get_vector( "ambient-light", vColor );
 325         if(vColor.size() < 3) {
 326           log_warning << "(ambient-light) requires a color as argument" << std::endl;
 327         } else {
 328           ambient_light = Color( vColor );
 329         }
 330       } else if(iter.item() == "name") {
 331         // skip
 332       } else {
 333         log_warning << "Unknown token '" << iter.item() << "' in worldmap" << std::endl;
 334       }
 335     }
 336     if(solid_tilemaps.size() == 0)
 337       throw std::runtime_error("No solid tilemap specified");
 338
 339     move_to_spawnpoint("main");
 340
 341   } catch(std::exception& e) {
 342     std::stringstream msg;
 343     msg << "Problem when parsing worldmap '" << map_filename << "': " <<
 344       e.what();
 345     throw std::runtime_error(msg.str());
 346   }
 347 }
 348
 349 void
 350 WorldMap::get_level_title(LevelTile& level)
 351 {
 352   /** get special_tile's title */
 353   level.title = "<no title>";
 354
 355   try {
 356     lisp::Parser parser;
 357     const lisp::Lisp* root = parser.parse(levels_path + level.get_name());
 358
 359     const lisp::Lisp* level_lisp = root->get_lisp("supertux-level");
 360     if(!level_lisp)
 361       return;
 362
 363     level_lisp->get("name", level.title);
 364   } catch(std::exception& e) {
 365     log_warning << "Problem when reading leveltitle: " << e.what() << std::endl;
 366     return;
 367   }
 368 }
 369
 370 void WorldMap::calculate_total_stats()
 371 {
 372   total_stats.zero();
 373   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 374     LevelTile* level = *i;
 375     if (level->solved) {
 376       total_stats += level->statistics;
 377     }
 378   }
 379 }
 380
 381 void
 382 WorldMap::on_escape_press()
 383 {
 384   // Show or hide the menu
 385   if(!Menu::current()) {
 386     Menu::set_current(worldmap_menu.get());
 387     tux->set_direction(D_NONE);  // stop tux movement when menu is called
 388   } else {
 389     Menu::set_current(NULL);
 390   }
 391 }
 392
 393 Vector
 394 WorldMap::get_next_tile(Vector pos, Direction direction)
 395 {
 396   switch(direction) {
 397     case D_WEST:
 398       pos.x -= 1;
 399       break;
 400     case D_EAST:
 401       pos.x += 1;
 402       break;
 403     case D_NORTH:
 404       pos.y -= 1;
 405       break;
 406     case D_SOUTH:
 407       pos.y += 1;
 408       break;
 409     case D_NONE:
 410       break;
 411   }
 412   return pos;
 413 }
 414
 415 bool
 416 WorldMap::path_ok(Direction direction, const Vector& old_pos, Vector* new_pos)
 417 {
 418   *new_pos = get_next_tile(old_pos, direction);
 419
 420   if (!(new_pos->x >= 0 && new_pos->x < get_width()
 421         && new_pos->y >= 0 && new_pos->y < get_height()))
 422     { // New position is outsite the tilemap
 423       return false;
 424     }
 425   else
 426     { // Check if the tile allows us to go to new_pos
 427       int old_tile_data = tile_data_at(old_pos);
 428       int new_tile_data = tile_data_at(*new_pos);
 429       switch(direction)
 430         {
 431         case D_WEST:
 432           return (old_tile_data & Tile::WORLDMAP_WEST
 433               && new_tile_data & Tile::WORLDMAP_EAST);
 434
 435         case D_EAST:
 436           return (old_tile_data & Tile::WORLDMAP_EAST
 437               && new_tile_data & Tile::WORLDMAP_WEST);
 438
 439         case D_NORTH:
 440           return (old_tile_data & Tile::WORLDMAP_NORTH
 441               && new_tile_data & Tile::WORLDMAP_SOUTH);
 442
 443         case D_SOUTH:
 444           return (old_tile_data & Tile::WORLDMAP_SOUTH
 445               && new_tile_data & Tile::WORLDMAP_NORTH);
 446
 447         case D_NONE:
 448           assert(!"path_ok() can't walk if direction is NONE");
 449         }
 450       return false;
 451     }
 452 }
 453
 454 void
 455 WorldMap::finished_level(Level* gamelevel)
 456 {
 457   // TODO use Level* parameter here?
 458   LevelTile* level = at_level();
 459
 460   bool old_level_state = level->solved;
 461   level->solved = true;
 462   level->sprite->set_action("solved");
 463
 464   // deal with statistics
 465   level->statistics.merge(gamelevel->stats);
 466   calculate_total_stats();
 467
 468   save_state();
 469
 470   if (old_level_state != level->solved) {
 471     // Try to detect the next direction to which we should walk
 472     // FIXME: Mostly a hack
 473     Direction dir = D_NONE;
 474
 475     int dirdata = available_directions_at(tux->get_tile_pos());
 476     // first, test for crossroads
 477     if (dirdata == Tile::WORLDMAP_CNSE ||
 478                 dirdata == Tile::WORLDMAP_CNSW ||
 479                 dirdata == Tile::WORLDMAP_CNEW ||
 480                 dirdata == Tile::WORLDMAP_CSEW ||
 481                 dirdata == Tile::WORLDMAP_CNSEW)
 482       dir = D_NONE;
 483     else if (dirdata & Tile::WORLDMAP_NORTH
 484         && tux->back_direction != D_NORTH)
 485       dir = D_NORTH;
 486     else if (dirdata & Tile::WORLDMAP_SOUTH
 487         && tux->back_direction != D_SOUTH)
 488       dir = D_SOUTH;
 489     else if (dirdata & Tile::WORLDMAP_EAST
 490         && tux->back_direction != D_EAST)
 491       dir = D_EAST;
 492     else if (dirdata & Tile::WORLDMAP_WEST
 493         && tux->back_direction != D_WEST)
 494       dir = D_WEST;
 495
 496     if (dir != D_NONE) {
 497       tux->set_direction(dir);
 498     }
 499   }
 500
 501   if (level->extro_script != "") {
 502     try {
 503       std::istringstream in(level->extro_script);
 504       run_script(in, "worldmap:extro_script");
 505     } catch(std::exception& e) {
 506       log_fatal << "Couldn't run level-extro-script: " << e.what() << std::endl;
 507     }
 508   }
 509 }
 510
 511 void
 512 WorldMap::update(float delta)
 513 {
 514   if(!in_level) {
 515     Menu* menu = Menu::current();
 516     if(menu != NULL) {
 517       menu->update();
 518
 519       if(menu == worldmap_menu.get()) {
 520         switch (worldmap_menu->check())
 521         {
 522           case MNID_RETURNWORLDMAP: // Return to game
 523             Menu::set_current(0);
 524             break;
 525           case MNID_QUITWORLDMAP: // Quit Worldmap
 526             main_loop->exit_screen();
 527             break;
 528         }
 529       }
 530
 531       return;
 532     }
 533
 534     // update GameObjects
 535     for(size_t i = 0; i < game_objects.size(); ++i) {
 536       GameObject* object = game_objects[i];
 537       object->update(delta);
 538     }
 539
 540     // remove old GameObjects
 541     for(GameObjects::iterator i = game_objects.begin();
 542         i != game_objects.end(); ) {
 543       GameObject* object = *i;
 544       if(!object->is_valid()) {
 545         try_unexpose(object);
 546         object->unref();
 547         i = game_objects.erase(i);
 548       } else {
 549         ++i;
 550       }
 551     }
 552
 553     /* update solid_tilemaps list */
 554     //FIXME: this could be more efficient
 555     solid_tilemaps.clear();
 556     for(std::vector<GameObject*>::iterator i = game_objects.begin();
 557         i != game_objects.end(); ++i)
 558     {
 559       TileMap* tm = dynamic_cast<TileMap*>(*i);
 560       if (!tm) continue;
 561       if (tm->is_solid()) solid_tilemaps.push_back(tm);
 562     }
 563
 564     // position "camera"
 565     Vector tux_pos = tux->get_pos();
 566     camera_offset.x = tux_pos.x - SCREEN_WIDTH/2;
 567     camera_offset.y = tux_pos.y - SCREEN_HEIGHT/2;
 568
 569     if (camera_offset.x < 0)
 570       camera_offset.x = 0;
 571     if (camera_offset.y < 0)
 572       camera_offset.y = 0;
 573
 574     if (camera_offset.x > (int)get_width()*32 - SCREEN_WIDTH)
 575       camera_offset.x = (int)get_width()*32 - SCREEN_WIDTH;
 576     if (camera_offset.y > (int)get_height()*32 - SCREEN_HEIGHT)
 577       camera_offset.y = (int)get_height()*32 - SCREEN_HEIGHT;
 578
 579     if (int(get_width()*32) < SCREEN_WIDTH)
 580       camera_offset.x = get_width()*16.0 - SCREEN_WIDTH/2.0;
 581     if (int(get_height()*32) < SCREEN_HEIGHT)
 582       camera_offset.y = get_height()*16.0 - SCREEN_HEIGHT/2.0;
 583
 584     // handle input
 585     bool enter_level = false;
 586     if(main_controller->pressed(Controller::ACTION)
 587         || main_controller->pressed(Controller::JUMP)
 588         || main_controller->pressed(Controller::MENU_SELECT)) {
 589       /* some people define UP and JUMP on the same key... */
 590       if(!main_controller->pressed(Controller::UP))
 591             enter_level = true;
 592         }
 593     if(main_controller->pressed(Controller::PAUSE_MENU))
 594       on_escape_press();
 595
 596     // check for teleporters
 597     Teleporter* teleporter = at_teleporter(tux->get_tile_pos());
 598     if (teleporter && (teleporter->automatic || (enter_level && (!tux->is_moving())))) {
 599       enter_level = false;
 600       if (teleporter->worldmap != "") {
 601         change(teleporter->worldmap, teleporter->spawnpoint);
 602       } else {
 603         // TODO: an animation, camera scrolling or a fading would be a nice touch
 604         sound_manager->play("sounds/warp.wav");
 605         tux->back_direction = D_NONE;
 606         move_to_spawnpoint(teleporter->spawnpoint);
 607       }
 608     }
 609
 610     // check for auto-play levels
 611     LevelTile* level = at_level();
 612     if (level && (level->auto_play) && (!level->solved) && (!tux->is_moving())) {
 613       enter_level = true;
 614     }
 615
 616     if (enter_level && !tux->is_moving())
 617       {
 618         /* Check level action */
 619         LevelTile* level = at_level();
 620         if (!level) {
 621           //Respawn if player on a tile with no level and nowhere to go.
 622           int tile_data = tile_data_at(tux->get_tile_pos());
 623           if(!( tile_data & ( Tile::WORLDMAP_NORTH |  Tile::WORLDMAP_SOUTH | Tile::WORLDMAP_WEST | Tile::WORLDMAP_EAST ))){
 624             log_warning << "Player at illegal position " << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << " respawning." << std::endl;
 625             move_to_spawnpoint("main");
 626             return;
 627           }
 628           log_warning << "No level to enter at: " << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << std::endl;
 629           return;
 630         }
 631
 632         if (level->pos == tux->get_tile_pos()) {
 633           try {
 634             Vector shrinkpos = Vector(level->pos.x*32 + 16 - camera_offset.x,
 635                                       level->pos.y*32 + 16 - camera_offset.y);
 636             std::string levelfile = levels_path + level->get_name();
 637
 638             // update state and savegame
 639             save_state();
 640
 641             main_loop->push_screen(new GameSession(levelfile, &level->statistics),
 642                                    new ShrinkFade(shrinkpos, 0.5));
 643             in_level = true;
 644           } catch(std::exception& e) {
 645             log_fatal << "Couldn't load level: " << e.what() << std::endl;
 646           }
 647         }
 648       }
 649     else
 650       {
 651   //      tux->set_direction(input_direction);
 652       }
 653   }
 654 }
 655
 656 int
 657 WorldMap::tile_data_at(Vector p)
 658 {
 659   int dirs = 0;
 660
 661   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
 662     TileMap* tilemap = *i;
 663     const Tile* tile = tilemap->get_tile((int)p.x, (int)p.y);
 664     int dirdata = tile->getData();
 665     dirs |= dirdata;
 666   }
 667
 668   return dirs;
 669 }
 670
 671 int
 672 WorldMap::available_directions_at(Vector p)
 673 {
 674   return tile_data_at(p) & Tile::WORLDMAP_DIR_MASK;
 675 }
 676
 677 LevelTile*
 678 WorldMap::at_level()
 679 {
 680   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 681     LevelTile* level = *i;
 682     if (level->pos == tux->get_tile_pos())
 683       return level;
 684   }
 685
 686   return NULL;
 687 }
 688
 689 SpecialTile*
 690 WorldMap::at_special_tile()
 691 {
 692   for(SpecialTiles::iterator i = special_tiles.begin();
 693       i != special_tiles.end(); ++i) {
 694     SpecialTile* special_tile = *i;
 695     if (special_tile->pos == tux->get_tile_pos())
 696       return special_tile;
 697   }
 698
 699   return NULL;
 700 }
 701
 702 SpriteChange*
 703 WorldMap::at_sprite_change(const Vector& pos)
 704 {
 705   for(SpriteChanges::iterator i = sprite_changes.begin();
 706       i != sprite_changes.end(); ++i) {
 707     SpriteChange* sprite_change = *i;
 708     if(sprite_change->pos == pos)
 709       return sprite_change;
 710   }
 711
 712   return NULL;
 713 }
 714
 715 Teleporter*
 716 WorldMap::at_teleporter(const Vector& pos)
 717 {
 718   for(std::vector<Teleporter*>::iterator i = teleporters.begin(); i != teleporters.end(); ++i) {
 719     Teleporter* teleporter = *i;
 720     if(teleporter->pos == pos) return teleporter;
 721   }
 722
 723   return NULL;
 724 }
 725
 726 void
 727 WorldMap::draw(DrawingContext& context)
 728 {
 729   if (int(get_width()*32) < SCREEN_WIDTH || int(get_height()*32) < SCREEN_HEIGHT)
 730     context.draw_filled_rect(Vector(0, 0), Vector(SCREEN_WIDTH, SCREEN_HEIGHT),
 731       Color(0.0f, 0.0f, 0.0f, 1.0f), LAYER_BACKGROUND0);
 732
 733   context.set_ambient_color( ambient_light );
 734   context.push_transform();
 735   context.set_translation(camera_offset);
 736
 737   for(GameObjects::iterator i = game_objects.begin();
 738       i != game_objects.end(); ++i) {
 739     GameObject* object = *i;
 740     object->draw(context);
 741   }
 742
 743 /*
 744   // FIXME: make this a runtime switch similar to draw_collrects/show_collrects?
 745   // draw visual indication of possible walk directions
 746   static int flipme = 0;
 747   if (flipme++ & 0x04)
 748   for (int x = 0; x < get_width(); x++) {
 749     for (int y = 0; y < get_height(); y++) {
 750       int data = tile_data_at(Vector(x,y));
 751       int px = x * 32;
 752       int py = y * 32;
 753       const int W = 4;
 754       if (data & Tile::WORLDMAP_NORTH)    context.draw_filled_rect(Rect(px + 16-W, py       , px + 16+W, py + 16-W), Color(0.2f, 0.2f, 0.2f, 0.7f), LAYER_FOREGROUND1 + 1000);
 755       if (data & Tile::WORLDMAP_SOUTH)    context.draw_filled_rect(Rect(px + 16-W, py + 16+W, px + 16+W, py + 32  ), Color(0.2f, 0.2f, 0.2f, 0.7f), LAYER_FOREGROUND1 + 1000);
 756       if (data & Tile::WORLDMAP_EAST)     context.draw_filled_rect(Rect(px + 16+W, py + 16-W, px + 32  , py + 16+W), Color(0.2f, 0.2f, 0.2f, 0.7f), LAYER_FOREGROUND1 + 1000);
 757       if (data & Tile::WORLDMAP_WEST)     context.draw_filled_rect(Rect(px       , py + 16-W, px + 16-W, py + 16+W), Color(0.2f, 0.2f, 0.2f, 0.7f), LAYER_FOREGROUND1 + 1000);
 758       if (data & Tile::WORLDMAP_DIR_MASK) context.draw_filled_rect(Rect(px + 16-W, py + 16-W, px + 16+W, py + 16+W), Color(0.2f, 0.2f, 0.2f, 0.7f), LAYER_FOREGROUND1 + 1000);
 759       if (data & Tile::WORLDMAP_STOP)     context.draw_filled_rect(Rect(px + 4   , py + 4   , px + 28  , py + 28  ), Color(0.2f, 0.2f, 0.2f, 0.7f), LAYER_FOREGROUND1 + 1000);
 760     }
 761   }
 762 */
 763
 764   draw_status(context);
 765   context.pop_transform();
 766 }
 767
 768 void
 769 WorldMap::draw_status(DrawingContext& context)
 770 {
 771   context.push_transform();
 772   context.set_translation(Vector(0, 0));
 773
 774   player_status->draw(context);
 775
 776   if (!tux->is_moving()) {
 777     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 778       LevelTile* level = *i;
 779
 780       if (level->pos == tux->get_tile_pos()) {
 781         if(level->title == "")
 782           get_level_title(*level);
 783
 784         context.draw_text(white_text, level->title,
 785                           Vector(SCREEN_WIDTH/2,
 786                                  SCREEN_HEIGHT - white_text->get_height() - 30),
 787                           ALIGN_CENTER, LAYER_FOREGROUND1);
 788
 789         // if level is solved, draw level picture behind stats
 790         /*
 791         if (level->solved) {
 792           if (const Surface* picture = level->get_picture()) {
 793             Vector pos = Vector(SCREEN_WIDTH - picture->get_width(), SCREEN_HEIGHT - picture->get_height());
 794             context.push_transform();
 795             context.set_alpha(0.5);
 796             context.draw_surface(picture, pos, LAYER_FOREGROUND1-1);
 797             context.pop_transform();
 798           }
 799         }
 800         */
 801
 802         level->statistics.draw_worldmap_info(context);
 803         break;
 804       }
 805     }
 806
 807     for(SpecialTiles::iterator i = special_tiles.begin();
 808         i != special_tiles.end(); ++i) {
 809       SpecialTile* special_tile = *i;
 810
 811       if (special_tile->pos == tux->get_tile_pos()) {
 812         /* Display an in-map message in the map, if any as been selected */
 813         if(!special_tile->map_message.empty() && !special_tile->passive_message)
 814           context.draw_text(gold_text, special_tile->map_message,
 815               Vector(SCREEN_WIDTH/2,
 816                 SCREEN_HEIGHT - white_text->get_height() - 60),
 817               ALIGN_CENTER, LAYER_FOREGROUND1);
 818         break;
 819       }
 820     }
 821
 822     // display teleporter messages
 823     Teleporter* teleporter = at_teleporter(tux->get_tile_pos());
 824     if (teleporter && (teleporter->message != "")) {
 825       Vector pos = Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT - white_text->get_height() - 30);
 826       context.draw_text(white_text, teleporter->message, pos, ALIGN_CENTER, LAYER_FOREGROUND1);
 827     }
 828
 829   }
 830
 831   /* Display a passive message in the map, if needed */
 832   if(passive_message_timer.started())
 833     context.draw_text(gold_text, passive_message,
 834             Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT - white_text->get_height() - 60),
 835             ALIGN_CENTER, LAYER_FOREGROUND1);
 836
 837   context.pop_transform();
 838 }
 839
 840 void
 841 WorldMap::setup()
 842 {
 843   sound_manager->play_music(music);
 844   Menu::set_current(NULL);
 845
 846   current_ = this;
 847   load_state();
 848
 849   // if force_spawnpoint was set, move Tux there, then clear force_spawnpoint
 850   if (force_spawnpoint != "") {
 851     move_to_spawnpoint(force_spawnpoint);
 852     force_spawnpoint = "";
 853   }
 854
 855   tux->setup();
 856
 857   // register worldmap_table as worldmap in scripting
 858   using namespace Scripting;
 859
 860   sq_pushroottable(global_vm);
 861   sq_pushstring(global_vm, "worldmap", -1);
 862   sq_pushobject(global_vm, worldmap_table);
 863   if(SQ_FAILED(sq_createslot(global_vm, -3)))
 864     throw SquirrelError(global_vm, "Couldn't set worldmap in roottable");
 865   sq_pop(global_vm, 1);
 866
 867   if(init_script != "") {
 868     std::istringstream in(init_script);
 869     run_script(in, "WorldMap::init");
 870   }
 871 }
 872
 873 void
 874 WorldMap::leave()
 875 {
 876   using namespace Scripting;
 877
 878   // save state of world and player
 879   save_state();
 880
 881   // remove worldmap_table from roottable
 882   sq_pushroottable(global_vm);
 883   sq_pushstring(global_vm, "worldmap", -1);
 884   if(SQ_FAILED(sq_deleteslot(global_vm, -2, SQFalse)))
 885     throw SquirrelError(global_vm, "Couldn't unset worldmap in roottable");
 886   sq_pop(global_vm, 1);
 887 }
 888
 889 void
 890 WorldMap::save_state()
 891 {
 892   using namespace Scripting;
 893
 894   HSQUIRRELVM vm = global_vm;
 895   int oldtop = sq_gettop(vm);
 896
 897   try {
 898     // get state table
 899     sq_pushroottable(vm);
 900     sq_pushstring(vm, "state", -1);
 901     if(SQ_FAILED(sq_get(vm, -2)))
 902       throw Scripting::SquirrelError(vm, "Couldn't get state table");
 903
 904     // get or create worlds table
 905     sq_pushstring(vm, "worlds", -1);
 906     if(SQ_FAILED(sq_get(vm, -2))) {
 907       sq_pushstring(vm, "worlds", -1);
 908       sq_newtable(vm);
 909       if(SQ_FAILED(sq_createslot(vm, -3)))
 910         throw Scripting::SquirrelError(vm, "Couldn't create state.worlds");
 911
 912       sq_pushstring(vm, "worlds", -1);
 913       if(SQ_FAILED(sq_get(vm, -2)))
 914         throw Scripting::SquirrelError(vm, "Couldn't create.get state.worlds");
 915     }
 916
 917     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
 918     if(SQ_FAILED(sq_deleteslot(vm, -2, SQFalse)))
 919       sq_pop(vm, 1);
 920
 921     // construct new table for this worldmap
 922     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
 923     sq_newtable(vm);
 924
 925     // store tux
 926     sq_pushstring(vm, "tux", -1);
 927     sq_newtable(vm);
 928
 929     store_float(vm, "x", tux->get_tile_pos().x);
 930     store_float(vm, "y", tux->get_tile_pos().y);
 931     store_string(vm, "back", direction_to_string(tux->back_direction));
 932
 933     sq_createslot(vm, -3);
 934
 935     // levels...
 936     sq_pushstring(vm, "levels", -1);
 937     sq_newtable(vm);
 938
 939     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 940       LevelTile* level = *i;
 941
 942           sq_pushstring(vm, level->get_name().c_str(), -1);
 943           sq_newtable(vm);
 944
 945           store_bool(vm, "solved", level->solved);
 946           level->statistics.serialize_to_squirrel(vm);
 947
 948           sq_createslot(vm, -3);
 949     }
 950
 951     sq_createslot(vm, -3);
 952
 953     // overall statistics...
 954     total_stats.serialize_to_squirrel(vm);
 955
 956     // push world into worlds table
 957     sq_createslot(vm, -3);
 958   } catch(std::exception& ) {
 959     sq_settop(vm, oldtop);
 960   }
 961
 962   sq_settop(vm, oldtop);
 963
 964   if(World::current() != NULL)
 965     World::current()->save_state();
 966 }
 967
 968 void
 969 WorldMap::load_state()
 970 {
 971   using namespace Scripting;
 972
 973   HSQUIRRELVM vm = global_vm;
 974   int oldtop = sq_gettop(vm);
 975
 976   try {
 977     // get state table
 978     sq_pushroottable(vm);
 979     sq_pushstring(vm, "state", -1);
 980     if(SQ_FAILED(sq_get(vm, -2)))
 981       throw Scripting::SquirrelError(vm, "Couldn't get state table");
 982
 983     // get worlds table
 984     sq_pushstring(vm, "worlds", -1);
 985     if(SQ_FAILED(sq_get(vm, -2)))
 986       throw Scripting::SquirrelError(vm, "Couldn't get state.worlds");
 987
 988     // get table for our world
 989     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
 990     if(SQ_FAILED(sq_get(vm, -2)))
 991       throw Scripting::SquirrelError(vm, "Couldn't get state.worlds.mapfilename");
 992
 993     // load tux
 994     sq_pushstring(vm, "tux", -1);
 995     if(SQ_FAILED(sq_get(vm, -2)))
 996       throw Scripting::SquirrelError(vm, "Couldn't get tux");
 997
 998     Vector p;
 999     p.x = read_float(vm, "x");
1000     p.y = read_float(vm, "y");
1001     std::string back_str = read_string(vm, "back");
1002     tux->back_direction = string_to_direction(back_str);
1003     tux->set_tile_pos(p);
1004
1005     sq_pop(vm, 1);
1006
1007     // load levels
1008     sq_pushstring(vm, "levels", -1);
1009     if(SQ_FAILED(sq_get(vm, -2)))
1010       throw Scripting::SquirrelError(vm, "Couldn't get levels");
1011
1012     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
1013       LevelTile* level = *i;
1014       sq_pushstring(vm, level->get_name().c_str(), -1);
1015       if(SQ_SUCCEEDED(sq_get(vm, -2))) {
1016         level->solved = read_bool(vm, "solved");
1017         level->sprite->set_action(level->solved ? "solved" : "default");
1018         level->statistics.unserialize_from_squirrel(vm);
1019         sq_pop(vm, 1);
1020       }
1021     }
1022
1023     // leave state table
1024     sq_pop(vm, 1);
1025
1026     // load overall statistics
1027     total_stats.unserialize_from_squirrel(vm);
1028
1029   } catch(std::exception& e) {
1030     log_debug << "Not loading worldmap state: " << e.what() << std::endl;
1031   }
1032   sq_settop(vm, oldtop);
1033
1034   in_level = false;
1035 }
1036
1037 size_t
1038 WorldMap::level_count()
1039 {
1040   return levels.size();
1041 }
1042
1043 size_t
1044 WorldMap::solved_level_count()
1045 {
1046   size_t count = 0;
1047   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
1048     LevelTile* level = *i;
1049
1050     if(level->solved)
1051       count++;
1052   }
1053
1054   return count;
1055 }
1056
1057 HSQUIRRELVM
1058 WorldMap::run_script(std::istream& in, const std::string& sourcename)
1059 {
1060   using namespace Scripting;
1061
1062   // garbage collect thread list
1063   for(ScriptList::iterator i = scripts.begin();
1064       i != scripts.end(); ) {
1065     HSQOBJECT& object = *i;
1066     HSQUIRRELVM vm = object_to_vm(object);
1067
1068     if(sq_getvmstate(vm) != SQ_VMSTATE_SUSPENDED) {
1069       sq_release(global_vm, &object);
1070       i = scripts.erase(i);
1071       continue;
1072     }
1073
1074     ++i;
1075   }
1076
1077   HSQOBJECT object = create_thread(global_vm);
1078   scripts.push_back(object);
1079
1080   HSQUIRRELVM vm = object_to_vm(object);
1081
1082   // set worldmap_table as roottable for the thread
1083   sq_pushobject(vm, worldmap_table);
1084   sq_setroottable(vm);
1085
1086   compile_and_run(vm, in, sourcename);
1087
1088   return vm;
1089 }
1090
1091 float
1092 WorldMap::get_width() const
1093 {
1094   float width = 0;
1095   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
1096     TileMap* solids = *i;
1097     if (solids->get_width() > width) width = solids->get_width();
1098   }
1099   return width;
1100 }
1101
1102 float
1103 WorldMap::get_height() const
1104 {
1105   float height = 0;
1106   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
1107     TileMap* solids = *i;
1108     if (solids->get_height() > height) height = solids->get_height();
1109   }
1110   return height;
1111 }
1112
1113 } // namespace WorldMapNS