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());
 140   //"images/worldmap.strf");
 141
 142   tux = new Tux(this);
 143   add_object(tux);
 144
 145   name = "<no title>";
 146   music = "music/salcon.ogg";
 147
 148   total_stats.reset();
 149
 150   worldmap_menu.reset(new Menu());
 151   worldmap_menu->add_label(_("Pause"));
 152   worldmap_menu->add_hl();
 153   worldmap_menu->add_entry(MNID_RETURNWORLDMAP, _("Continue"));
 154   worldmap_menu->add_submenu(_("Options"), get_options_menu());
 155   worldmap_menu->add_hl();
 156   worldmap_menu->add_entry(MNID_QUITWORLDMAP, _("Quit World"));
 157
 158   // create a new squirrel table for the worldmap
 159   using namespace Scripting;
 160
 161   sq_collectgarbage(global_vm);
 162   sq_newtable(global_vm);
 163   sq_pushroottable(global_vm);
 164   if(SQ_FAILED(sq_setdelegate(global_vm, -2)))
 165     throw Scripting::SquirrelError(global_vm, "Couldn't set worldmap_table delegate");
 166
 167   sq_resetobject(&worldmap_table);
 168   if(SQ_FAILED(sq_getstackobj(global_vm, -1, &worldmap_table)))
 169     throw Scripting::SquirrelError(global_vm, "Couldn't get table from stack");
 170
 171   sq_addref(global_vm, &worldmap_table);
 172   sq_pop(global_vm, 1);
 173
 174   sound_manager->preload("sounds/warp.wav");
 175
 176   // load worldmap objects
 177   load(filename);
 178 }
 179
 180 WorldMap::~WorldMap()
 181 {
 182   using namespace Scripting;
 183
 184   for(GameObjects::iterator i = game_objects.begin();
 185       i != game_objects.end(); ++i) {
 186     GameObject* object = *i;
 187     try_unexpose(object);
 188     object->unref();
 189   }
 190
 191   for(SpawnPoints::iterator i = spawn_points.begin();
 192       i != spawn_points.end(); ++i) {
 193     delete *i;
 194   }
 195
 196   for(ScriptList::iterator i = scripts.begin();
 197       i != scripts.end(); ++i) {
 198     HSQOBJECT& object = *i;
 199     sq_release(global_vm, &object);
 200   }
 201   sq_release(global_vm, &worldmap_table);
 202
 203   sq_collectgarbage(global_vm);
 204
 205   if(current_ == this)
 206     current_ = NULL;
 207 }
 208
 209 void
 210 WorldMap::add_object(GameObject* object)
 211 {
 212   TileMap* tilemap = dynamic_cast<TileMap*> (object);
 213   if(tilemap != 0 && tilemap->is_solid()) {
 214     solid_tilemaps.push_back(tilemap);
 215   }
 216
 217   object->ref();
 218   try_expose(object);
 219   game_objects.push_back(object);
 220 }
 221
 222 void
 223 WorldMap::try_expose(GameObject* object)
 224 {
 225   ScriptInterface* interface = dynamic_cast<ScriptInterface*> (object);
 226   if(interface != NULL) {
 227     HSQUIRRELVM vm = Scripting::global_vm;
 228     sq_pushobject(vm, worldmap_table);
 229     interface->expose(vm, -1);
 230     sq_pop(vm, 1);
 231   }
 232 }
 233
 234 void
 235 WorldMap::try_unexpose(GameObject* object)
 236 {
 237   ScriptInterface* interface = dynamic_cast<ScriptInterface*> (object);
 238   if(interface != NULL) {
 239     HSQUIRRELVM vm = Scripting::global_vm;
 240     SQInteger oldtop = sq_gettop(vm);
 241     sq_pushobject(vm, worldmap_table);
 242     try {
 243       interface->unexpose(vm, -1);
 244     } catch(std::exception& e) {
 245       log_warning << "Couldn't unregister object: " << e.what() << std::endl;
 246     }
 247     sq_settop(vm, oldtop);
 248   }
 249 }
 250
 251 void
 252 WorldMap::move_to_spawnpoint(const std::string& spawnpoint)
 253 {
 254   for(SpawnPoints::iterator i = spawn_points.begin(); i != spawn_points.end(); ++i) {
 255     SpawnPoint* sp = *i;
 256     if(sp->name == spawnpoint) {
 257       Vector p = sp->pos;
 258       tux->set_tile_pos(p);
 259       tux->set_direction(sp->auto_dir);
 260       return;
 261     }
 262   }
 263   log_warning << "Spawnpoint '" << spawnpoint << "' not found." << std::endl;
 264   if (spawnpoint != "main") {
 265     move_to_spawnpoint("main");
 266   }
 267 }
 268
 269 void
 270 WorldMap::change(const std::string& filename, const std::string& force_spawnpoint)
 271 {
 272   main_loop->exit_screen();
 273   main_loop->push_screen(new WorldMap(filename, force_spawnpoint));
 274 }
 275
 276 void
 277 WorldMap::load(const std::string& filename)
 278 {
 279   map_filename = filename;
 280   levels_path = FileSystem::dirname(map_filename);
 281
 282   try {
 283     lisp::Parser parser;
 284     const lisp::Lisp* root = parser.parse(map_filename);
 285
 286     const lisp::Lisp* lisp = root->get_lisp("supertux-level");
 287     if(!lisp)
 288       throw std::runtime_error("file isn't a supertux-level file.");
 289
 290     lisp->get("name", name);
 291
 292     const lisp::Lisp* sector = lisp->get_lisp("sector");
 293     if(!sector)
 294       throw std::runtime_error("No sector sepcified in worldmap file.");
 295
 296     lisp::ListIterator iter(sector);
 297     while(iter.next()) {
 298       if(iter.item() == "tilemap") {
 299
 300         TileMap::loading_worldmap = true;
 301
 302         add_object(new TileMap(*(iter.lisp())));
 303       } else if(iter.item() == "background") {
 304         add_object(new Background(*(iter.lisp())));
 305       } else if(iter.item() == "music") {
 306         iter.value()->get(music);
 307       } else if(iter.item() == "init-script") {
 308         iter.value()->get(init_script);
 309       } else if(iter.item() == "worldmap-spawnpoint") {
 310         SpawnPoint* sp = new SpawnPoint(iter.lisp());
 311         spawn_points.push_back(sp);
 312       } else if(iter.item() == "level") {
 313         LevelTile* level = new LevelTile(levels_path, iter.lisp());
 314         levels.push_back(level);
 315         add_object(level);
 316       } else if(iter.item() == "special-tile") {
 317         SpecialTile* special_tile = new SpecialTile(iter.lisp());
 318         special_tiles.push_back(special_tile);
 319         add_object(special_tile);
 320       } else if(iter.item() == "sprite-change") {
 321         SpriteChange* sprite_change = new SpriteChange(iter.lisp());
 322         sprite_changes.push_back(sprite_change);
 323         add_object(sprite_change);
 324       } else if(iter.item() == "teleporter") {
 325         Teleporter* teleporter = new Teleporter(iter.lisp());
 326         teleporters.push_back(teleporter);
 327         add_object(teleporter);
 328       } else if(iter.item() == "ambient-light") {
 329         std::vector<float> vColor;
 330         sector->get_vector( "ambient-light", vColor );
 331         if(vColor.size() < 3) {
 332           log_warning << "(ambient-light) requires a color as argument" << std::endl;
 333         } else {
 334           ambient_light = Color( vColor );
 335         }
 336       } else if(iter.item() == "name") {
 337         // skip
 338       } else {
 339         log_warning << "Unknown token '" << iter.item() << "' in worldmap" << std::endl;
 340       }
 341     }
 342     if(solid_tilemaps.size() == 0)
 343       throw std::runtime_error("No solid tilemap specified");
 344
 345     move_to_spawnpoint("main");
 346
 347   } catch(std::exception& e) {
 348     std::stringstream msg;
 349     msg << "Problem when parsing worldmap '" << map_filename << "': " <<
 350       e.what();
 351     throw std::runtime_error(msg.str());
 352   }
 353 }
 354
 355 void
 356 WorldMap::get_level_title(LevelTile& level)
 357 {
 358   /** get special_tile's title */
 359   level.title = "<no title>";
 360
 361   try {
 362     lisp::Parser parser;
 363     const lisp::Lisp* root = parser.parse(levels_path + level.get_name());
 364
 365     const lisp::Lisp* level_lisp = root->get_lisp("supertux-level");
 366     if(!level_lisp)
 367       return;
 368
 369     level_lisp->get("name", level.title);
 370   } catch(std::exception& e) {
 371     log_warning << "Problem when reading leveltitle: " << e.what() << std::endl;
 372     return;
 373   }
 374 }
 375
 376 void WorldMap::calculate_total_stats()
 377 {
 378   total_stats.zero();
 379   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 380     LevelTile* level = *i;
 381     if (level->solved) {
 382       total_stats += level->statistics;
 383     }
 384   }
 385 }
 386
 387 void
 388 WorldMap::on_escape_press()
 389 {
 390   // Show or hide the menu
 391   if(!Menu::current()) {
 392     Menu::set_current(worldmap_menu.get());
 393     tux->set_direction(D_NONE);  // stop tux movement when menu is called
 394   } else {
 395     Menu::set_current(NULL);
 396   }
 397 }
 398
 399 Vector
 400 WorldMap::get_next_tile(Vector pos, Direction direction)
 401 {
 402   switch(direction) {
 403     case D_WEST:
 404       pos.x -= 1;
 405       break;
 406     case D_EAST:
 407       pos.x += 1;
 408       break;
 409     case D_NORTH:
 410       pos.y -= 1;
 411       break;
 412     case D_SOUTH:
 413       pos.y += 1;
 414       break;
 415     case D_NONE:
 416       break;
 417   }
 418   return pos;
 419 }
 420
 421 bool
 422 WorldMap::path_ok(Direction direction, const Vector& old_pos, Vector* new_pos)
 423 {
 424   *new_pos = get_next_tile(old_pos, direction);
 425
 426   if (!(new_pos->x >= 0 && new_pos->x < get_width()
 427         && new_pos->y >= 0 && new_pos->y < get_height()))
 428     { // New position is outsite the tilemap
 429       return false;
 430     }
 431   else
 432     { // Check if the tile allows us to go to new_pos
 433       int old_tile_data = tile_data_at(old_pos);
 434       int new_tile_data = tile_data_at(*new_pos);
 435       switch(direction)
 436         {
 437         case D_WEST:
 438           return (old_tile_data & Tile::WORLDMAP_WEST
 439               && new_tile_data & Tile::WORLDMAP_EAST);
 440
 441         case D_EAST:
 442           return (old_tile_data & Tile::WORLDMAP_EAST
 443               && new_tile_data & Tile::WORLDMAP_WEST);
 444
 445         case D_NORTH:
 446           return (old_tile_data & Tile::WORLDMAP_NORTH
 447               && new_tile_data & Tile::WORLDMAP_SOUTH);
 448
 449         case D_SOUTH:
 450           return (old_tile_data & Tile::WORLDMAP_SOUTH
 451               && new_tile_data & Tile::WORLDMAP_NORTH);
 452
 453         case D_NONE:
 454           assert(!"path_ok() can't walk if direction is NONE");
 455         }
 456       return false;
 457     }
 458 }
 459
 460 void
 461 WorldMap::finished_level(Level* gamelevel)
 462 {
 463   // TODO use Level* parameter here?
 464   LevelTile* level = at_level();
 465
 466   bool old_level_state = level->solved;
 467   level->solved = true;
 468   level->sprite->set_action("solved");
 469
 470   // deal with statistics
 471   level->statistics.merge(gamelevel->stats);
 472   calculate_total_stats();
 473
 474   save_state();
 475
 476   if (old_level_state != level->solved) {
 477     // Try to detect the next direction to which we should walk
 478     // FIXME: Mostly a hack
 479     Direction dir = D_NONE;
 480
 481     int dirdata = available_directions_at(tux->get_tile_pos());
 482     // first, test for crossroads
 483     if (dirdata == Tile::WORLDMAP_CNSE ||
 484                 dirdata == Tile::WORLDMAP_CNSW ||
 485                 dirdata == Tile::WORLDMAP_CNEW ||
 486                 dirdata == Tile::WORLDMAP_CSEW ||
 487                 dirdata == Tile::WORLDMAP_CNSEW)
 488       dir = D_NONE;
 489     else if (dirdata & Tile::WORLDMAP_NORTH
 490         && tux->back_direction != D_NORTH)
 491       dir = D_NORTH;
 492     else if (dirdata & Tile::WORLDMAP_SOUTH
 493         && tux->back_direction != D_SOUTH)
 494       dir = D_SOUTH;
 495     else if (dirdata & Tile::WORLDMAP_EAST
 496         && tux->back_direction != D_EAST)
 497       dir = D_EAST;
 498     else if (dirdata & Tile::WORLDMAP_WEST
 499         && tux->back_direction != D_WEST)
 500       dir = D_WEST;
 501
 502     if (dir != D_NONE) {
 503       tux->set_direction(dir);
 504     }
 505   }
 506
 507   if (level->extro_script != "") {
 508     try {
 509       std::istringstream in(level->extro_script);
 510       run_script(in, "worldmap:extro_script");
 511     } catch(std::exception& e) {
 512       log_fatal << "Couldn't run level-extro-script: " << e.what() << std::endl;
 513     }
 514   }
 515 }
 516
 517 void
 518 WorldMap::update(float delta)
 519 {
 520   if(!in_level) {
 521     Menu* menu = Menu::current();
 522     if(menu != NULL) {
 523       menu->update();
 524
 525       if(menu == worldmap_menu.get()) {
 526         switch (worldmap_menu->check())
 527         {
 528           case MNID_RETURNWORLDMAP: // Return to game
 529             Menu::set_current(0);
 530             break;
 531           case MNID_QUITWORLDMAP: // Quit Worldmap
 532             main_loop->exit_screen();
 533             break;
 534         }
 535       }
 536
 537       return;
 538     }
 539
 540     // update GameObjects
 541     for(size_t i = 0; i < game_objects.size(); ++i) {
 542       GameObject* object = game_objects[i];
 543       object->update(delta);
 544     }
 545
 546     // remove old GameObjects
 547     for(GameObjects::iterator i = game_objects.begin();
 548         i != game_objects.end(); ) {
 549       GameObject* object = *i;
 550       if(!object->is_valid()) {
 551         try_unexpose(object);
 552         object->unref();
 553         i = game_objects.erase(i);
 554       } else {
 555         ++i;
 556       }
 557     }
 558
 559     /* update solid_tilemaps list */
 560     //FIXME: this could be more efficient
 561     solid_tilemaps.clear();
 562     for(std::vector<GameObject*>::iterator i = game_objects.begin();
 563         i != game_objects.end(); ++i)
 564     {
 565       TileMap* tm = dynamic_cast<TileMap*>(*i);
 566       if (!tm) continue;
 567       if (tm->is_solid()) solid_tilemaps.push_back(tm);
 568     }
 569
 570     // position "camera"
 571     Vector tux_pos = tux->get_pos();
 572     camera_offset.x = tux_pos.x - SCREEN_WIDTH/2;
 573     camera_offset.y = tux_pos.y - SCREEN_HEIGHT/2;
 574
 575     if (camera_offset.x < 0)
 576       camera_offset.x = 0;
 577     if (camera_offset.y < 0)
 578       camera_offset.y = 0;
 579
 580     if (camera_offset.x > (int)get_width()*32 - SCREEN_WIDTH)
 581       camera_offset.x = (int)get_width()*32 - SCREEN_WIDTH;
 582     if (camera_offset.y > (int)get_height()*32 - SCREEN_HEIGHT)
 583       camera_offset.y = (int)get_height()*32 - SCREEN_HEIGHT;
 584
 585     if (int(get_width()*32) < SCREEN_WIDTH)
 586       camera_offset.x = get_width()*16.0 - SCREEN_WIDTH/2.0;
 587     if (int(get_height()*32) < SCREEN_HEIGHT)
 588       camera_offset.y = get_height()*16.0 - SCREEN_HEIGHT/2.0;
 589
 590     // handle input
 591     bool enter_level = false;
 592     if(main_controller->pressed(Controller::ACTION)
 593         || main_controller->pressed(Controller::JUMP)
 594         || main_controller->pressed(Controller::MENU_SELECT)) {
 595       /* some people define UP and JUMP on the same key... */
 596       if(!main_controller->pressed(Controller::UP))
 597             enter_level = true;
 598         }
 599     if(main_controller->pressed(Controller::PAUSE_MENU))
 600       on_escape_press();
 601
 602     // check for teleporters
 603     Teleporter* teleporter = at_teleporter(tux->get_tile_pos());
 604     if (teleporter && (teleporter->automatic || (enter_level && (!tux->is_moving())))) {
 605       enter_level = false;
 606       if (teleporter->worldmap != "") {
 607         change(teleporter->worldmap, teleporter->spawnpoint);
 608       } else {
 609         // TODO: an animation, camera scrolling or a fading would be a nice touch
 610         sound_manager->play("sounds/warp.wav");
 611         tux->back_direction = D_NONE;
 612         move_to_spawnpoint(teleporter->spawnpoint);
 613       }
 614     }
 615
 616     // check for auto-play levels
 617     LevelTile* level = at_level();
 618     if (level && (level->auto_play) && (!level->solved) && (!tux->is_moving())) {
 619       enter_level = true;
 620     }
 621
 622     if (enter_level && !tux->is_moving())
 623       {
 624         /* Check level action */
 625         LevelTile* level = at_level();
 626         if (!level) {
 627           //Respawn if player on a tile with no level and nowhere to go.
 628           int tile_data = tile_data_at(tux->get_tile_pos());
 629           if(!( tile_data & ( Tile::WORLDMAP_NORTH |  Tile::WORLDMAP_SOUTH | Tile::WORLDMAP_WEST | Tile::WORLDMAP_EAST ))){
 630             log_warning << "Player at illegal position " << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << " respawning." << std::endl;
 631             move_to_spawnpoint("main");
 632             return;
 633           }
 634           log_warning << "No level to enter at: " << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << std::endl;
 635           return;
 636         }
 637
 638         if (level->pos == tux->get_tile_pos()) {
 639           try {
 640             Vector shrinkpos = Vector(level->pos.x*32 + 16 - camera_offset.x,
 641                                       level->pos.y*32 + 16 - camera_offset.y);
 642             std::string levelfile = levels_path + level->get_name();
 643
 644             // update state and savegame
 645             save_state();
 646
 647             main_loop->push_screen(new GameSession(levelfile, &level->statistics),
 648                                    new ShrinkFade(shrinkpos, 0.5));
 649             in_level = true;
 650           } catch(std::exception& e) {
 651             log_fatal << "Couldn't load level: " << e.what() << std::endl;
 652           }
 653         }
 654       }
 655     else
 656       {
 657   //      tux->set_direction(input_direction);
 658       }
 659   }
 660 }
 661
 662 int
 663 WorldMap::tile_data_at(Vector p)
 664 {
 665   int dirs = 0;
 666
 667   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
 668     TileMap* tilemap = *i;
 669     const Tile* tile = tilemap->get_tile((int)p.x, (int)p.y);
 670     int dirdata = tile->getData();
 671     dirs |= dirdata;
 672   }
 673
 674   return dirs;
 675 }
 676
 677 int
 678 WorldMap::available_directions_at(Vector p)
 679 {
 680   return tile_data_at(p) & Tile::WORLDMAP_DIR_MASK;
 681 }
 682
 683 LevelTile*
 684 WorldMap::at_level()
 685 {
 686   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 687     LevelTile* level = *i;
 688     if (level->pos == tux->get_tile_pos())
 689       return level;
 690   }
 691
 692   return NULL;
 693 }
 694
 695 SpecialTile*
 696 WorldMap::at_special_tile()
 697 {
 698   for(SpecialTiles::iterator i = special_tiles.begin();
 699       i != special_tiles.end(); ++i) {
 700     SpecialTile* special_tile = *i;
 701     if (special_tile->pos == tux->get_tile_pos())
 702       return special_tile;
 703   }
 704
 705   return NULL;
 706 }
 707
 708 SpriteChange*
 709 WorldMap::at_sprite_change(const Vector& pos)
 710 {
 711   for(SpriteChanges::iterator i = sprite_changes.begin();
 712       i != sprite_changes.end(); ++i) {
 713     SpriteChange* sprite_change = *i;
 714     if(sprite_change->pos == pos)
 715       return sprite_change;
 716   }
 717
 718   return NULL;
 719 }
 720
 721 Teleporter*
 722 WorldMap::at_teleporter(const Vector& pos)
 723 {
 724   for(std::vector<Teleporter*>::iterator i = teleporters.begin(); i != teleporters.end(); ++i) {
 725     Teleporter* teleporter = *i;
 726     if(teleporter->pos == pos) return teleporter;
 727   }
 728
 729   return NULL;
 730 }
 731
 732 void
 733 WorldMap::draw(DrawingContext& context)
 734 {
 735   if (int(get_width()*32) < SCREEN_WIDTH || int(get_height()*32) < SCREEN_HEIGHT)
 736     context.draw_filled_rect(Vector(0, 0), Vector(SCREEN_WIDTH, SCREEN_HEIGHT),
 737       Color(0.0f, 0.0f, 0.0f, 1.0f), LAYER_BACKGROUND0);
 738
 739   context.set_ambient_color( ambient_light );
 740   context.push_transform();
 741   context.set_translation(camera_offset);
 742
 743   for(GameObjects::iterator i = game_objects.begin();
 744       i != game_objects.end(); ++i) {
 745     GameObject* object = *i;
 746     object->draw(context);
 747   }
 748
 749 /*
 750   // FIXME: make this a runtime switch similar to draw_collrects/show_collrects?
 751   // draw visual indication of possible walk directions
 752   static int flipme = 0;
 753   if (flipme++ & 0x04)
 754   for (int x = 0; x < get_width(); x++) {
 755     for (int y = 0; y < get_height(); y++) {
 756       int data = tile_data_at(Vector(x,y));
 757       int px = x * 32;
 758       int py = y * 32;
 759       const int W = 4;
 760       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);
 761       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);
 762       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);
 763       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);
 764       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);
 765       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);
 766     }
 767   }
 768 */
 769
 770   draw_status(context);
 771   context.pop_transform();
 772 }
 773
 774 void
 775 WorldMap::draw_status(DrawingContext& context)
 776 {
 777   context.push_transform();
 778   context.set_translation(Vector(0, 0));
 779
 780   player_status->draw(context);
 781
 782   if (!tux->is_moving()) {
 783     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 784       LevelTile* level = *i;
 785
 786       if (level->pos == tux->get_tile_pos()) {
 787         if(level->title == "")
 788           get_level_title(*level);
 789
 790         context.draw_text(white_text, level->title,
 791                           Vector(SCREEN_WIDTH/2,
 792                                  SCREEN_HEIGHT - white_text->get_height() - 30),
 793                           ALIGN_CENTER, LAYER_FOREGROUND1);
 794
 795         // if level is solved, draw level picture behind stats
 796         /*
 797         if (level->solved) {
 798           if (const Surface* picture = level->get_picture()) {
 799             Vector pos = Vector(SCREEN_WIDTH - picture->get_width(), SCREEN_HEIGHT - picture->get_height());
 800             context.push_transform();
 801             context.set_alpha(0.5);
 802             context.draw_surface(picture, pos, LAYER_FOREGROUND1-1);
 803             context.pop_transform();
 804           }
 805         }
 806         */
 807
 808         level->statistics.draw_worldmap_info(context);
 809         break;
 810       }
 811     }
 812
 813     for(SpecialTiles::iterator i = special_tiles.begin();
 814         i != special_tiles.end(); ++i) {
 815       SpecialTile* special_tile = *i;
 816
 817       if (special_tile->pos == tux->get_tile_pos()) {
 818         /* Display an in-map message in the map, if any as been selected */
 819         if(!special_tile->map_message.empty() && !special_tile->passive_message)
 820           context.draw_text(gold_text, special_tile->map_message,
 821               Vector(SCREEN_WIDTH/2,
 822                 SCREEN_HEIGHT - white_text->get_height() - 60),
 823               ALIGN_CENTER, LAYER_FOREGROUND1);
 824         break;
 825       }
 826     }
 827
 828     // display teleporter messages
 829     Teleporter* teleporter = at_teleporter(tux->get_tile_pos());
 830     if (teleporter && (teleporter->message != "")) {
 831       Vector pos = Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT - white_text->get_height() - 30);
 832       context.draw_text(white_text, teleporter->message, pos, ALIGN_CENTER, LAYER_FOREGROUND1);
 833     }
 834
 835   }
 836
 837   /* Display a passive message in the map, if needed */
 838   if(passive_message_timer.started())
 839     context.draw_text(gold_text, passive_message,
 840             Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT - white_text->get_height() - 60),
 841             ALIGN_CENTER, LAYER_FOREGROUND1);
 842
 843   context.pop_transform();
 844 }
 845
 846 void
 847 WorldMap::setup()
 848 {
 849   sound_manager->play_music(music);
 850   Menu::set_current(NULL);
 851
 852   current_ = this;
 853   load_state();
 854
 855   // if force_spawnpoint was set, move Tux there, then clear force_spawnpoint
 856   if (force_spawnpoint != "") {
 857     move_to_spawnpoint(force_spawnpoint);
 858     force_spawnpoint = "";
 859   }
 860
 861   tux->setup();
 862
 863   // register worldmap_table as worldmap in scripting
 864   using namespace Scripting;
 865
 866   sq_pushroottable(global_vm);
 867   sq_pushstring(global_vm, "worldmap", -1);
 868   sq_pushobject(global_vm, worldmap_table);
 869   if(SQ_FAILED(sq_createslot(global_vm, -3)))
 870     throw SquirrelError(global_vm, "Couldn't set worldmap in roottable");
 871   sq_pop(global_vm, 1);
 872
 873   if(init_script != "") {
 874     std::istringstream in(init_script);
 875     run_script(in, "WorldMap::init");
 876   }
 877 }
 878
 879 void
 880 WorldMap::leave()
 881 {
 882   using namespace Scripting;
 883
 884   // save state of world and player
 885   save_state();
 886
 887   // remove worldmap_table from roottable
 888   sq_pushroottable(global_vm);
 889   sq_pushstring(global_vm, "worldmap", -1);
 890   if(SQ_FAILED(sq_deleteslot(global_vm, -2, SQFalse)))
 891     throw SquirrelError(global_vm, "Couldn't unset worldmap in roottable");
 892   sq_pop(global_vm, 1);
 893 }
 894
 895 void
 896 WorldMap::save_state()
 897 {
 898   using namespace Scripting;
 899
 900   HSQUIRRELVM vm = global_vm;
 901   int oldtop = sq_gettop(vm);
 902
 903   try {
 904     // get state table
 905     sq_pushroottable(vm);
 906     sq_pushstring(vm, "state", -1);
 907     if(SQ_FAILED(sq_get(vm, -2)))
 908       throw Scripting::SquirrelError(vm, "Couldn't get state table");
 909
 910     // get or create worlds table
 911     sq_pushstring(vm, "worlds", -1);
 912     if(SQ_FAILED(sq_get(vm, -2))) {
 913       sq_pushstring(vm, "worlds", -1);
 914       sq_newtable(vm);
 915       if(SQ_FAILED(sq_createslot(vm, -3)))
 916         throw Scripting::SquirrelError(vm, "Couldn't create state.worlds");
 917
 918       sq_pushstring(vm, "worlds", -1);
 919       if(SQ_FAILED(sq_get(vm, -2)))
 920         throw Scripting::SquirrelError(vm, "Couldn't create.get state.worlds");
 921     }
 922
 923     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
 924     if(SQ_FAILED(sq_deleteslot(vm, -2, SQFalse)))
 925       sq_pop(vm, 1);
 926
 927     // construct new table for this worldmap
 928     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
 929     sq_newtable(vm);
 930
 931     // store tux
 932     sq_pushstring(vm, "tux", -1);
 933     sq_newtable(vm);
 934
 935     store_float(vm, "x", tux->get_tile_pos().x);
 936     store_float(vm, "y", tux->get_tile_pos().y);
 937     store_string(vm, "back", direction_to_string(tux->back_direction));
 938
 939     sq_createslot(vm, -3);
 940
 941     // levels...
 942     sq_pushstring(vm, "levels", -1);
 943     sq_newtable(vm);
 944
 945     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 946       LevelTile* level = *i;
 947
 948           sq_pushstring(vm, level->get_name().c_str(), -1);
 949           sq_newtable(vm);
 950
 951           store_bool(vm, "solved", level->solved);
 952           level->statistics.serialize_to_squirrel(vm);
 953
 954           sq_createslot(vm, -3);
 955     }
 956
 957     sq_createslot(vm, -3);
 958
 959     // overall statistics...
 960     total_stats.serialize_to_squirrel(vm);
 961
 962     // push world into worlds table
 963     sq_createslot(vm, -3);
 964   } catch(std::exception& ) {
 965     sq_settop(vm, oldtop);
 966   }
 967
 968   sq_settop(vm, oldtop);
 969
 970   if(World::current() != NULL)
 971     World::current()->save_state();
 972 }
 973
 974 void
 975 WorldMap::load_state()
 976 {
 977   using namespace Scripting;
 978
 979   HSQUIRRELVM vm = global_vm;
 980   int oldtop = sq_gettop(vm);
 981
 982   try {
 983     // get state table
 984     sq_pushroottable(vm);
 985     sq_pushstring(vm, "state", -1);
 986     if(SQ_FAILED(sq_get(vm, -2)))
 987       throw Scripting::SquirrelError(vm, "Couldn't get state table");
 988
 989     // get worlds table
 990     sq_pushstring(vm, "worlds", -1);
 991     if(SQ_FAILED(sq_get(vm, -2)))
 992       throw Scripting::SquirrelError(vm, "Couldn't get state.worlds");
 993
 994     // get table for our world
 995     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
 996     if(SQ_FAILED(sq_get(vm, -2)))
 997       throw Scripting::SquirrelError(vm, "Couldn't get state.worlds.mapfilename");
 998
 999     // load tux
1000     sq_pushstring(vm, "tux", -1);
1001     if(SQ_FAILED(sq_get(vm, -2)))
1002       throw Scripting::SquirrelError(vm, "Couldn't get tux");
1003
1004     Vector p;
1005     p.x = read_float(vm, "x");
1006     p.y = read_float(vm, "y");
1007     std::string back_str = read_string(vm, "back");
1008     tux->back_direction = string_to_direction(back_str);
1009     tux->set_tile_pos(p);
1010
1011     sq_pop(vm, 1);
1012
1013     // load levels
1014     sq_pushstring(vm, "levels", -1);
1015     if(SQ_FAILED(sq_get(vm, -2)))
1016       throw Scripting::SquirrelError(vm, "Couldn't get levels");
1017
1018     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
1019       LevelTile* level = *i;
1020       sq_pushstring(vm, level->get_name().c_str(), -1);
1021       if(SQ_SUCCEEDED(sq_get(vm, -2))) {
1022         level->solved = read_bool(vm, "solved");
1023         level->sprite->set_action(level->solved ? "solved" : "default");
1024         level->statistics.unserialize_from_squirrel(vm);
1025         sq_pop(vm, 1);
1026       }
1027     }
1028
1029     // leave state table
1030     sq_pop(vm, 1);
1031
1032     // load overall statistics
1033     total_stats.unserialize_from_squirrel(vm);
1034
1035   } catch(std::exception& e) {
1036     log_debug << "Not loading worldmap state: " << e.what() << std::endl;
1037   }
1038   sq_settop(vm, oldtop);
1039
1040   in_level = false;
1041 }
1042
1043 size_t
1044 WorldMap::level_count()
1045 {
1046   return levels.size();
1047 }
1048
1049 size_t
1050 WorldMap::solved_level_count()
1051 {
1052   size_t count = 0;
1053   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
1054     LevelTile* level = *i;
1055
1056     if(level->solved)
1057       count++;
1058   }
1059
1060   return count;
1061 }
1062
1063 HSQUIRRELVM
1064 WorldMap::run_script(std::istream& in, const std::string& sourcename)
1065 {
1066   using namespace Scripting;
1067
1068   // garbage collect thread list
1069   for(ScriptList::iterator i = scripts.begin();
1070       i != scripts.end(); ) {
1071     HSQOBJECT& object = *i;
1072     HSQUIRRELVM vm = object_to_vm(object);
1073
1074     if(sq_getvmstate(vm) != SQ_VMSTATE_SUSPENDED) {
1075       sq_release(global_vm, &object);
1076       i = scripts.erase(i);
1077       continue;
1078     }
1079
1080     ++i;
1081   }
1082
1083   HSQOBJECT object = create_thread(global_vm);
1084   scripts.push_back(object);
1085
1086   HSQUIRRELVM vm = object_to_vm(object);
1087
1088   // set worldmap_table as roottable for the thread
1089   sq_pushobject(vm, worldmap_table);
1090   sq_setroottable(vm);
1091
1092   compile_and_run(vm, in, sourcename);
1093
1094   return vm;
1095 }
1096
1097 float
1098 WorldMap::get_width() const
1099 {
1100   float width = 0;
1101   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
1102     TileMap* solids = *i;
1103     if (solids->get_width() > width) width = solids->get_width();
1104   }
1105   return width;
1106 }
1107
1108 float
1109 WorldMap::get_height() const
1110 {
1111   float height = 0;
1112   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
1113     TileMap* solids = *i;
1114     if (solids->get_height() > height) height = solids->get_height();
1115   }
1116   return height;
1117 }
1118
1119 } // namespace WorldMapNS