src/worldmap/worldmap.cpp

   1 //  SuperTux -  A Jump'n Run
   2 //  Copyright (C) 2004 Ingo Ruhnke <grumbel@gmx.de>
   3 //  Copyright (C) 2006 Christoph Sommer <christoph.sommer@2006.expires.deltadevelopment.de>
   4 //
   5 //  This program is free software: you can redistribute it and/or modify
   6 //  it under the terms of the GNU General Public License as published by
   7 //  the Free Software Foundation, either version 3 of the License, or
   8 //  (at your option) any later version.
   9 //
  10 //  This program is distributed in the hope that it will be useful,
  11 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 //  GNU General Public License for more details.
  14 //
  15 //  You should have received a copy of the GNU General Public License
  16 //  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 #include "worldmap/worldmap.hpp"
  19
  20 #include <config.h>
  21
  22 #include <assert.h>
  23 #include <fstream>
  24 #include <iostream>
  25 #include <physfs.h>
  26 #include <sstream>
  27 #include <stdexcept>
  28 #include <unistd.h>
  29 #include <vector>
  30
  31 #include "audio/sound_manager.hpp"
  32 #include "control/joystickkeyboardcontroller.hpp"
  33 #include "gui/menu.hpp"
  34 #include "gui/menu_manager.hpp"
  35 #include "gui/mousecursor.hpp"
  36 #include "lisp/lisp.hpp"
  37 #include "lisp/list_iterator.hpp"
  38 #include "lisp/parser.hpp"
  39 #include "object/background.hpp"
  40 #include "object/decal.hpp"
  41 #include "object/tilemap.hpp"
  42 #include "physfs/ifile_streambuf.hpp"
  43 #include "scripting/squirrel_error.hpp"
  44 #include "scripting/squirrel_util.hpp"
  45 #include "sprite/sprite.hpp"
  46 #include "sprite/sprite_manager.hpp"
  47 #include "supertux/game_session.hpp"
  48 #include "supertux/globals.hpp"
  49 #include "supertux/screen_manager.hpp"
  50 #include "supertux/menu/menu_storage.hpp"
  51 #include "supertux/menu/options_menu.hpp"
  52 #include "supertux/menu/worldmap_menu.hpp"
  53 #include "supertux/player_status.hpp"
  54 #include "supertux/resources.hpp"
  55 #include "supertux/sector.hpp"
  56 #include "supertux/shrinkfade.hpp"
  57 #include "supertux/spawn_point.hpp"
  58 #include "supertux/textscroller.hpp"
  59 #include "supertux/tile_manager.hpp"
  60 #include "supertux/tile_set.hpp"
  61 #include "supertux/world.hpp"
  62 #include "util/file_system.hpp"
  63 #include "util/gettext.hpp"
  64 #include "util/log.hpp"
  65 #include "util/reader.hpp"
  66 #include "video/drawing_context.hpp"
  67 #include "video/surface.hpp"
  68 #include "worldmap/level.hpp"
  69 #include "worldmap/special_tile.hpp"
  70 #include "worldmap/sprite_change.hpp"
  71 #include "worldmap/tux.hpp"
  72 #include "worldmap/worldmap.hpp"
  73
  74 static const float CAMERA_PAN_SPEED = 5.0;
  75
  76 namespace worldmap {
  77
  78 WorldMap* WorldMap::current_ = NULL;
  79
  80 WorldMap::WorldMap(const std::string& filename, PlayerStatus* player_status, const std::string& force_spawnpoint) :
  81   tux(0),
  82   player_status(player_status),
  83   tileset(NULL),
  84   free_tileset(false),
  85   worldmap_menu(),
  86   camera_offset(),
  87   name(),
  88   music(),
  89   init_script(),
  90   game_objects(),
  91   solid_tilemaps(),
  92   passive_message_timer(),
  93   passive_message(),
  94   map_filename(),
  95   levels_path(),
  96   special_tiles(),
  97   levels(),
  98   sprite_changes(),
  99   spawn_points(),
 100   teleporters(),
 101   total_stats(),
 102   worldmap_table(),
 103   scripts(),
 104   ambient_light( 1.0f, 1.0f, 1.0f, 1.0f ),
 105   force_spawnpoint(force_spawnpoint),
 106   in_level(false),
 107   pan_pos(),
 108   panning(false)
 109 {
 110   tux = new Tux(this);
 111   add_object(tux);
 112
 113   name = "<no title>";
 114   music = "music/salcon.ogg";
 115
 116   total_stats.reset();
 117
 118   worldmap_menu.reset(new WorldmapMenu());
 119
 120   // create a new squirrel table for the worldmap
 121   using namespace scripting;
 122
 123   sq_collectgarbage(global_vm);
 124   sq_newtable(global_vm);
 125   sq_pushroottable(global_vm);
 126   if(SQ_FAILED(sq_setdelegate(global_vm, -2)))
 127     throw scripting::SquirrelError(global_vm, "Couldn't set worldmap_table delegate");
 128
 129   sq_resetobject(&worldmap_table);
 130   if(SQ_FAILED(sq_getstackobj(global_vm, -1, &worldmap_table)))
 131     throw scripting::SquirrelError(global_vm, "Couldn't get table from stack");
 132
 133   sq_addref(global_vm, &worldmap_table);
 134   sq_pop(global_vm, 1);
 135
 136   sound_manager->preload("sounds/warp.wav");
 137
 138   // load worldmap objects
 139   load(filename);
 140 }
 141
 142 WorldMap::~WorldMap()
 143 {
 144   using namespace scripting;
 145
 146   if(free_tileset)
 147     delete tileset;
 148
 149   for(GameObjects::iterator i = game_objects.begin();
 150       i != game_objects.end(); ++i) {
 151     GameObject* object = *i;
 152     try_unexpose(object);
 153     object->unref();
 154   }
 155
 156   for(SpawnPoints::iterator i = spawn_points.begin();
 157       i != spawn_points.end(); ++i) {
 158     delete *i;
 159   }
 160
 161   for(ScriptList::iterator i = scripts.begin();
 162       i != scripts.end(); ++i) {
 163     HSQOBJECT& object = *i;
 164     sq_release(global_vm, &object);
 165   }
 166   sq_release(global_vm, &worldmap_table);
 167
 168   sq_collectgarbage(global_vm);
 169
 170   if(current_ == this)
 171     current_ = NULL;
 172 }
 173
 174 void
 175 WorldMap::add_object(GameObject* object)
 176 {
 177   TileMap* tilemap = dynamic_cast<TileMap*> (object);
 178   if(tilemap != 0 && tilemap->is_solid()) {
 179     solid_tilemaps.push_back(tilemap);
 180   }
 181
 182   object->ref();
 183   try_expose(object);
 184   game_objects.push_back(object);
 185 }
 186
 187 void
 188 WorldMap::try_expose(GameObject* object)
 189 {
 190   ScriptInterface* object_ = dynamic_cast<ScriptInterface*> (object);
 191   if(object_ != NULL) {
 192     HSQUIRRELVM vm = scripting::global_vm;
 193     sq_pushobject(vm, worldmap_table);
 194     object_->expose(vm, -1);
 195     sq_pop(vm, 1);
 196   }
 197 }
 198
 199 void
 200 WorldMap::try_unexpose(GameObject* object)
 201 {
 202   ScriptInterface* object_ = dynamic_cast<ScriptInterface*> (object);
 203   if(object_ != NULL) {
 204     HSQUIRRELVM vm = scripting::global_vm;
 205     SQInteger oldtop = sq_gettop(vm);
 206     sq_pushobject(vm, worldmap_table);
 207     try {
 208       object_->unexpose(vm, -1);
 209     } catch(std::exception& e) {
 210       log_warning << "Couldn't unregister object: " << e.what() << std::endl;
 211     }
 212     sq_settop(vm, oldtop);
 213   }
 214 }
 215
 216 void
 217 WorldMap::move_to_spawnpoint(const std::string& spawnpoint, bool pan)
 218 {
 219   for(SpawnPoints::iterator i = spawn_points.begin(); i != spawn_points.end(); ++i) {
 220     SpawnPoint* sp = *i;
 221     if(sp->name == spawnpoint) {
 222       Vector p = sp->pos;
 223       tux->set_tile_pos(p);
 224       tux->set_direction(sp->auto_dir);
 225       if(pan) {
 226         panning = true;
 227         pan_pos = get_camera_pos_for_tux();
 228         clamp_camera_position(pan_pos);
 229       }
 230       return;
 231     }
 232   }
 233   log_warning << "Spawnpoint '" << spawnpoint << "' not found." << std::endl;
 234   if (spawnpoint != "main") {
 235     move_to_spawnpoint("main");
 236   }
 237 }
 238
 239 void
 240 WorldMap::change(const std::string& filename, const std::string& force_spawnpoint)
 241 {
 242   g_screen_manager->exit_screen();
 243   g_screen_manager->push_screen(new WorldMap(filename, player_status, force_spawnpoint));
 244 }
 245
 246 void
 247 WorldMap::load(const std::string& filename)
 248 {
 249   map_filename = filename;
 250   levels_path = FileSystem::dirname(map_filename);
 251
 252   try {
 253     lisp::Parser parser;
 254     const lisp::Lisp* root = parser.parse(map_filename);
 255
 256     const lisp::Lisp* level = root->get_lisp("supertux-level");
 257     if(level == NULL)
 258       throw std::runtime_error("file isn't a supertux-level file.");
 259
 260     level->get("name", name);
 261
 262     const lisp::Lisp* sector = level->get_lisp("sector");
 263     if(!sector)
 264       throw std::runtime_error("No sector specified in worldmap file.");
 265
 266     const lisp::Lisp* tilesets_lisp = level->get_lisp("tilesets");
 267     if(tilesets_lisp != NULL) {
 268       tileset      = tile_manager->parse_tileset_definition(*tilesets_lisp);
 269       free_tileset = true;
 270     }
 271     std::string tileset_name;
 272     if(level->get("tileset", tileset_name)) {
 273       if(tileset != NULL) {
 274         log_warning << "multiple tilesets specified in level" << std::endl;
 275       } else {
 276         tileset = tile_manager->get_tileset(tileset_name);
 277       }
 278     }
 279     /* load default tileset */
 280     if(tileset == NULL) {
 281       tileset = tile_manager->get_tileset("images/worldmap.strf");
 282     }
 283     current_tileset = tileset;
 284
 285     lisp::ListIterator iter(sector);
 286     while(iter.next()) {
 287       if(iter.item() == "tilemap") {
 288         add_object(new TileMap(*(iter.lisp())));
 289       } else if(iter.item() == "background") {
 290         add_object(new Background(*(iter.lisp())));
 291       } else if(iter.item() == "music") {
 292         iter.value()->get(music);
 293       } else if(iter.item() == "init-script") {
 294         iter.value()->get(init_script);
 295       } else if(iter.item() == "worldmap-spawnpoint") {
 296         SpawnPoint* sp = new SpawnPoint(*iter.lisp());
 297         spawn_points.push_back(sp);
 298       } else if(iter.item() == "level") {
 299         LevelTile* level = new LevelTile(levels_path, *iter.lisp());
 300         levels.push_back(level);
 301         add_object(level);
 302       } else if(iter.item() == "special-tile") {
 303         SpecialTile* special_tile = new SpecialTile(*iter.lisp());
 304         special_tiles.push_back(special_tile);
 305         add_object(special_tile);
 306       } else if(iter.item() == "sprite-change") {
 307         SpriteChange* sprite_change = new SpriteChange(*iter.lisp());
 308         sprite_changes.push_back(sprite_change);
 309         add_object(sprite_change);
 310       } else if(iter.item() == "teleporter") {
 311         Teleporter* teleporter = new Teleporter(*iter.lisp());
 312         teleporters.push_back(teleporter);
 313         add_object(teleporter);
 314       } else if(iter.item() == "decal") {
 315         Decal* decal = new Decal(*iter.lisp());
 316         add_object(decal);
 317       } else if(iter.item() == "ambient-light") {
 318         std::vector<float> vColor;
 319         sector->get( "ambient-light", vColor );
 320         if(vColor.size() < 3) {
 321           log_warning << "(ambient-light) requires a color as argument" << std::endl;
 322         } else {
 323           ambient_light = Color( vColor );
 324         }
 325       } else if(iter.item() == "name") {
 326         // skip
 327       } else {
 328         log_warning << "Unknown token '" << iter.item() << "' in worldmap" << std::endl;
 329       }
 330     }
 331     current_tileset = NULL;
 332
 333     if(solid_tilemaps.size() == 0)
 334       throw std::runtime_error("No solid tilemap specified");
 335
 336     move_to_spawnpoint("main");
 337
 338   } catch(std::exception& e) {
 339     std::stringstream msg;
 340     msg << "Problem when parsing worldmap '" << map_filename << "': " <<
 341       e.what();
 342     throw std::runtime_error(msg.str());
 343   }
 344 }
 345
 346 void
 347 WorldMap::get_level_title(LevelTile& level)
 348 {
 349   /** get special_tile's title */
 350   level.title = "<no title>";
 351
 352   try {
 353     lisp::Parser parser;
 354     const lisp::Lisp* root = parser.parse(levels_path + level.get_name());
 355
 356     const lisp::Lisp* level_lisp = root->get_lisp("supertux-level");
 357     if(!level_lisp)
 358       return;
 359
 360     level_lisp->get("name", level.title);
 361   } catch(std::exception& e) {
 362     log_warning << "Problem when reading leveltitle: " << e.what() << std::endl;
 363     return;
 364   }
 365 }
 366
 367 void
 368 WorldMap::get_level_target_time(LevelTile& level)
 369 {
 370   if(last_position == tux->get_tile_pos()) {
 371     level.target_time = last_target_time;
 372     return;
 373   }
 374
 375   try {
 376     lisp::Parser parser;
 377     const lisp::Lisp* root = parser.parse(levels_path + level.get_name());
 378
 379     const lisp::Lisp* level_lisp = root->get_lisp("supertux-level");
 380     if(!level_lisp)
 381       return;
 382
 383     level_lisp->get("target-time", level.target_time);
 384
 385     last_position = level.pos;
 386     last_target_time = level.target_time;
 387   } catch(std::exception& e) {
 388     log_warning << "Problem when reading level target time: " << e.what() << std::endl;
 389     return;
 390   }
 391 }
 392
 393 void WorldMap::calculate_total_stats()
 394 {
 395   total_stats.zero();
 396   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 397     LevelTile* level = *i;
 398     if (level->solved) {
 399       total_stats += level->statistics;
 400     }
 401   }
 402 }
 403
 404 void
 405 WorldMap::on_escape_press()
 406 {
 407   // Show or hide the menu
 408   if(!MenuManager::current()) {
 409     MenuManager::set_current(worldmap_menu.get());
 410     tux->set_direction(D_NONE);  // stop tux movement when menu is called
 411   } else {
 412     MenuManager::set_current(NULL);
 413   }
 414 }
 415
 416 Vector
 417 WorldMap::get_next_tile(Vector pos, Direction direction)
 418 {
 419   switch(direction) {
 420     case D_WEST:
 421       pos.x -= 1;
 422       break;
 423     case D_EAST:
 424       pos.x += 1;
 425       break;
 426     case D_NORTH:
 427       pos.y -= 1;
 428       break;
 429     case D_SOUTH:
 430       pos.y += 1;
 431       break;
 432     case D_NONE:
 433       break;
 434   }
 435   return pos;
 436 }
 437
 438 bool
 439 WorldMap::path_ok(Direction direction, const Vector& old_pos, Vector* new_pos)
 440 {
 441   *new_pos = get_next_tile(old_pos, direction);
 442
 443   if (!(new_pos->x >= 0 && new_pos->x < get_width()
 444         && new_pos->y >= 0 && new_pos->y < get_height()))
 445   { // New position is outsite the tilemap
 446     return false;
 447   }
 448   else
 449   { // Check if the tile allows us to go to new_pos
 450     int old_tile_data = tile_data_at(old_pos);
 451     int new_tile_data = tile_data_at(*new_pos);
 452     switch(direction)
 453     {
 454       case D_WEST:
 455         return (old_tile_data & Tile::WORLDMAP_WEST
 456                 && new_tile_data & Tile::WORLDMAP_EAST);
 457
 458       case D_EAST:
 459         return (old_tile_data & Tile::WORLDMAP_EAST
 460                 && new_tile_data & Tile::WORLDMAP_WEST);
 461
 462       case D_NORTH:
 463         return (old_tile_data & Tile::WORLDMAP_NORTH
 464                 && new_tile_data & Tile::WORLDMAP_SOUTH);
 465
 466       case D_SOUTH:
 467         return (old_tile_data & Tile::WORLDMAP_SOUTH
 468                 && new_tile_data & Tile::WORLDMAP_NORTH);
 469
 470       case D_NONE:
 471         assert(!"path_ok() can't walk if direction is NONE");
 472     }
 473     return false;
 474   }
 475 }
 476
 477 void
 478 WorldMap::finished_level(Level* gamelevel)
 479 {
 480   // TODO use Level* parameter here?
 481   LevelTile* level = at_level();
 482
 483   bool old_level_state = level->solved;
 484   level->solved = true;
 485   level->sprite->set_action("solved");
 486
 487   // deal with statistics
 488   level->statistics.merge(gamelevel->stats);
 489   calculate_total_stats();
 490   get_level_target_time(*level);
 491   if(level->statistics.completed(level->statistics, level->target_time)) {
 492     level->perfect = true;
 493     if(level->sprite->has_action("perfect"))
 494       level->sprite->set_action("perfect");
 495   }
 496
 497   save_state();
 498
 499   if (old_level_state != level->solved) {
 500     // Try to detect the next direction to which we should walk
 501     // FIXME: Mostly a hack
 502     Direction dir = D_NONE;
 503
 504     int dirdata = available_directions_at(tux->get_tile_pos());
 505     // first, test for crossroads
 506     if (dirdata == Tile::WORLDMAP_CNSE ||
 507         dirdata == Tile::WORLDMAP_CNSW ||
 508         dirdata == Tile::WORLDMAP_CNEW ||
 509         dirdata == Tile::WORLDMAP_CSEW ||
 510         dirdata == Tile::WORLDMAP_CNSEW)
 511       dir = D_NONE;
 512     else if (dirdata & Tile::WORLDMAP_NORTH
 513              && tux->back_direction != D_NORTH)
 514       dir = D_NORTH;
 515     else if (dirdata & Tile::WORLDMAP_SOUTH
 516              && tux->back_direction != D_SOUTH)
 517       dir = D_SOUTH;
 518     else if (dirdata & Tile::WORLDMAP_EAST
 519              && tux->back_direction != D_EAST)
 520       dir = D_EAST;
 521     else if (dirdata & Tile::WORLDMAP_WEST
 522              && tux->back_direction != D_WEST)
 523       dir = D_WEST;
 524
 525     if (dir != D_NONE) {
 526       tux->set_direction(dir);
 527     }
 528   }
 529
 530   if (level->extro_script != "") {
 531     try {
 532       std::istringstream in(level->extro_script);
 533       run_script(in, "worldmap:extro_script");
 534     } catch(std::exception& e) {
 535       log_warning << "Couldn't run level-extro-script: " << e.what() << std::endl;
 536     }
 537   }
 538 }
 539
 540 Vector
 541 WorldMap::get_camera_pos_for_tux() {
 542   Vector camera_offset;
 543   Vector tux_pos = tux->get_pos();
 544   camera_offset.x = tux_pos.x - SCREEN_WIDTH/2;
 545   camera_offset.y = tux_pos.y - SCREEN_HEIGHT/2;
 546   return camera_offset;
 547 }
 548
 549 void
 550 WorldMap::clamp_camera_position(Vector& c) {
 551   if (c.x < 0)
 552     c.x = 0;
 553   if (c.y < 0)
 554     c.y = 0;
 555
 556   if (c.x > (int)get_width()*32 - SCREEN_WIDTH)
 557     c.x = (int)get_width()*32 - SCREEN_WIDTH;
 558   if (c.y > (int)get_height()*32 - SCREEN_HEIGHT)
 559     c.y = (int)get_height()*32 - SCREEN_HEIGHT;
 560
 561   if (int(get_width()*32) < SCREEN_WIDTH)
 562     c.x = get_width()*16.0 - SCREEN_WIDTH/2.0;
 563   if (int(get_height()*32) < SCREEN_HEIGHT)
 564     c.y = get_height()*16.0 - SCREEN_HEIGHT/2.0;
 565 }
 566
 567 void
 568 WorldMap::update(float delta)
 569 {
 570   if(!in_level) {
 571     Menu* menu = MenuManager::current();
 572     if(menu != NULL) {
 573       if(menu == worldmap_menu.get()) {
 574         switch (worldmap_menu->check())
 575         {
 576           case MNID_RETURNWORLDMAP: // Return to game
 577             MenuManager::set_current(0);
 578             break;
 579           case MNID_QUITWORLDMAP: // Quit Worldmap
 580             g_screen_manager->exit_screen();
 581             break;
 582         }
 583       }
 584
 585       return;
 586     }
 587
 588     // update GameObjects
 589     for(size_t i = 0; i < game_objects.size(); ++i) {
 590       GameObject* object = game_objects[i];
 591       if(!panning || object != tux) {
 592         object->update(delta);
 593       }
 594     }
 595
 596     // remove old GameObjects
 597     for(GameObjects::iterator i = game_objects.begin();
 598         i != game_objects.end(); ) {
 599       GameObject* object = *i;
 600       if(!object->is_valid()) {
 601         try_unexpose(object);
 602         object->unref();
 603         i = game_objects.erase(i);
 604       } else {
 605         ++i;
 606       }
 607     }
 608
 609     /* update solid_tilemaps list */
 610     //FIXME: this could be more efficient
 611     solid_tilemaps.clear();
 612     for(std::vector<GameObject*>::iterator i = game_objects.begin();
 613         i != game_objects.end(); ++i)
 614     {
 615       TileMap* tm = dynamic_cast<TileMap*>(*i);
 616       if (!tm) continue;
 617       if (tm->is_solid()) solid_tilemaps.push_back(tm);
 618     }
 619
 620     Vector requested_pos;
 621
 622     // position "camera"
 623     if(!panning) {
 624       camera_offset = get_camera_pos_for_tux();
 625     } else {
 626       Vector delta = pan_pos - camera_offset;
 627       float mag = delta.norm();
 628       if(mag > CAMERA_PAN_SPEED) {
 629         delta *= CAMERA_PAN_SPEED/mag;
 630       }
 631       camera_offset += delta;
 632       if(camera_offset == pan_pos) {
 633         panning = false;
 634       }
 635     }
 636
 637     requested_pos = camera_offset;
 638     clamp_camera_position(camera_offset);
 639
 640     if(panning) {
 641       if(requested_pos.x != camera_offset.x) {
 642         pan_pos.x = camera_offset.x;
 643       }
 644       if(requested_pos.y != camera_offset.y) {
 645         pan_pos.y = camera_offset.y;
 646       }
 647     }
 648
 649     // handle input
 650     Controller *controller = g_jk_controller->get_main_controller();
 651     bool enter_level = false;
 652     if(controller->pressed(Controller::ACTION)
 653        || controller->pressed(Controller::JUMP)
 654        || controller->pressed(Controller::MENU_SELECT)) {
 655       /* some people define UP and JUMP on the same key... */
 656       if(!controller->pressed(Controller::UP))
 657         enter_level = true;
 658     }
 659     if(controller->pressed(Controller::PAUSE_MENU))
 660       on_escape_press();
 661
 662     // check for teleporters
 663     Teleporter* teleporter = at_teleporter(tux->get_tile_pos());
 664     if (teleporter && (teleporter->automatic || (enter_level && (!tux->is_moving())))) {
 665       enter_level = false;
 666       if (teleporter->worldmap != "") {
 667         change(teleporter->worldmap, teleporter->spawnpoint);
 668       } else {
 669         // TODO: an animation, camera scrolling or a fading would be a nice touch
 670         sound_manager->play("sounds/warp.wav");
 671         tux->back_direction = D_NONE;
 672         move_to_spawnpoint(teleporter->spawnpoint, true);
 673       }
 674     }
 675
 676     // check for auto-play levels
 677     LevelTile* level = at_level();
 678     if (level && (level->auto_play) && (!level->solved) && (!tux->is_moving())) {
 679       enter_level = true;
 680     }
 681
 682     if (enter_level && !tux->is_moving())
 683     {
 684       /* Check level action */
 685       LevelTile* level = at_level();
 686       if (!level) {
 687         //Respawn if player on a tile with no level and nowhere to go.
 688         int tile_data = tile_data_at(tux->get_tile_pos());
 689         if(!( tile_data & ( Tile::WORLDMAP_NORTH |  Tile::WORLDMAP_SOUTH | Tile::WORLDMAP_WEST | Tile::WORLDMAP_EAST ))){
 690           log_warning << "Player at illegal position " << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << " respawning." << std::endl;
 691           move_to_spawnpoint("main");
 692           return;
 693         }
 694         log_warning << "No level to enter at: " << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << std::endl;
 695         return;
 696       }
 697
 698       if (level->pos == tux->get_tile_pos()) {
 699         try {
 700           Vector shrinkpos = Vector(level->pos.x*32 + 16 - camera_offset.x,
 701                                     level->pos.y*32 +  8 - camera_offset.y);
 702           std::string levelfile = levels_path + level->get_name();
 703
 704           // update state and savegame
 705           save_state();
 706
 707           g_screen_manager->push_screen(new GameSession(levelfile, player_status, &level->statistics),
 708                                    new ShrinkFade(shrinkpos, 1.0f));
 709           in_level = true;
 710         } catch(std::exception& e) {
 711           log_fatal << "Couldn't load level: " << e.what() << std::endl;
 712         }
 713       }
 714     }
 715     else
 716     {
 717       //      tux->set_direction(input_direction);
 718     }
 719   }
 720 }
 721
 722 int
 723 WorldMap::tile_data_at(Vector p)
 724 {
 725   int dirs = 0;
 726
 727   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
 728     TileMap* tilemap = *i;
 729     const Tile* tile = tilemap->get_tile((int)p.x, (int)p.y);
 730     int dirdata = tile->getData();
 731     dirs |= dirdata;
 732   }
 733
 734   return dirs;
 735 }
 736
 737 int
 738 WorldMap::available_directions_at(Vector p)
 739 {
 740   return tile_data_at(p) & Tile::WORLDMAP_DIR_MASK;
 741 }
 742
 743 LevelTile*
 744 WorldMap::at_level()
 745 {
 746   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 747     LevelTile* level = *i;
 748     if (level->pos == tux->get_tile_pos())
 749       return level;
 750   }
 751
 752   return NULL;
 753 }
 754
 755 SpecialTile*
 756 WorldMap::at_special_tile()
 757 {
 758   for(SpecialTiles::iterator i = special_tiles.begin();
 759       i != special_tiles.end(); ++i) {
 760     SpecialTile* special_tile = *i;
 761     if (special_tile->pos == tux->get_tile_pos())
 762       return special_tile;
 763   }
 764
 765   return NULL;
 766 }
 767
 768 SpriteChange*
 769 WorldMap::at_sprite_change(const Vector& pos)
 770 {
 771   for(SpriteChanges::iterator i = sprite_changes.begin();
 772       i != sprite_changes.end(); ++i) {
 773     SpriteChange* sprite_change = *i;
 774     if(sprite_change->pos == pos)
 775       return sprite_change;
 776   }
 777
 778   return NULL;
 779 }
 780
 781 Teleporter*
 782 WorldMap::at_teleporter(const Vector& pos)
 783 {
 784   for(std::vector<Teleporter*>::iterator i = teleporters.begin(); i != teleporters.end(); ++i) {
 785     Teleporter* teleporter = *i;
 786     if(teleporter->pos == pos) return teleporter;
 787   }
 788
 789   return NULL;
 790 }
 791
 792 void
 793 WorldMap::draw(DrawingContext& context)
 794 {
 795   if (int(get_width()*32) < SCREEN_WIDTH || int(get_height()*32) < SCREEN_HEIGHT)
 796     context.draw_filled_rect(Vector(0, 0), Vector(SCREEN_WIDTH, SCREEN_HEIGHT),
 797                              Color(0.0f, 0.0f, 0.0f, 1.0f), LAYER_BACKGROUND0);
 798
 799   context.set_ambient_color( ambient_light );
 800   context.push_transform();
 801   context.set_translation(camera_offset);
 802
 803   for(GameObjects::iterator i = game_objects.begin();
 804       i != game_objects.end(); ++i) {
 805     GameObject* object = *i;
 806     if(!panning || object != tux) {
 807       object->draw(context);
 808     }
 809   }
 810
 811   /*
 812   // FIXME: make this a runtime switch similar to draw_collrects/show_collrects?
 813   // draw visual indication of possible walk directions
 814   static int flipme = 0;
 815   if (flipme++ & 0x04)
 816   for (int x = 0; x < get_width(); x++) {
 817   for (int y = 0; y < get_height(); y++) {
 818   int data = tile_data_at(Vector(x,y));
 819   int px = x * 32;
 820   int py = y * 32;
 821   const int W = 4;
 822   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);
 823   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);
 824   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);
 825   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);
 826   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);
 827   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);
 828   }
 829   }
 830   */
 831
 832   draw_status(context);
 833   context.pop_transform();
 834 }
 835
 836 void
 837 WorldMap::draw_status(DrawingContext& context)
 838 {
 839   context.push_transform();
 840   context.set_translation(Vector(0, 0));
 841
 842   player_status->draw(context);
 843
 844   if (!tux->is_moving()) {
 845     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 846       LevelTile* level = *i;
 847
 848       if (level->pos == tux->get_tile_pos()) {
 849         if(level->title == "")
 850           get_level_title(*level);
 851
 852         context.draw_text(Resources::normal_font, level->title,
 853                           Vector(SCREEN_WIDTH/2,
 854                                  SCREEN_HEIGHT - Resources::normal_font->get_height() - 10),
 855                           ALIGN_CENTER, LAYER_HUD, WorldMap::level_title_color);
 856
 857         // if level is solved, draw level picture behind stats
 858         /*
 859           if (level->solved) {
 860           if (const Surface* picture = level->get_picture()) {
 861           Vector pos = Vector(SCREEN_WIDTH - picture->get_width(), SCREEN_HEIGHT - picture->get_height());
 862           context.push_transform();
 863           context.set_alpha(0.5);
 864           context.draw_surface(picture, pos, LAYER_FOREGROUND1-1);
 865           context.pop_transform();
 866           }
 867           }
 868         */
 869
 870         get_level_target_time(*level);
 871         level->statistics.draw_worldmap_info(context, level->target_time);
 872         break;
 873       }
 874     }
 875
 876     for(SpecialTiles::iterator i = special_tiles.begin();
 877         i != special_tiles.end(); ++i) {
 878       SpecialTile* special_tile = *i;
 879
 880       if (special_tile->pos == tux->get_tile_pos()) {
 881         /* Display an in-map message in the map, if any as been selected */
 882         if(!special_tile->map_message.empty() && !special_tile->passive_message)
 883           context.draw_text(Resources::normal_font, special_tile->map_message,
 884                             Vector(SCREEN_WIDTH/2,
 885                                    SCREEN_HEIGHT - Resources::normal_font->get_height() - 60),
 886                             ALIGN_CENTER, LAYER_FOREGROUND1, WorldMap::message_color);
 887         break;
 888       }
 889     }
 890
 891     // display teleporter messages
 892     Teleporter* teleporter = at_teleporter(tux->get_tile_pos());
 893     if (teleporter && (teleporter->message != "")) {
 894       Vector pos = Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT - Resources::normal_font->get_height() - 30);
 895       context.draw_text(Resources::normal_font, teleporter->message, pos, ALIGN_CENTER, LAYER_FOREGROUND1, WorldMap::teleporter_message_color);
 896     }
 897
 898   }
 899
 900   /* Display a passive message in the map, if needed */
 901   if(passive_message_timer.started())
 902     context.draw_text(Resources::normal_font, passive_message,
 903                       Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT - Resources::normal_font->get_height() - 60),
 904                       ALIGN_CENTER, LAYER_FOREGROUND1, WorldMap::message_color);
 905
 906   context.pop_transform();
 907 }
 908
 909 void
 910 WorldMap::setup()
 911 {
 912   sound_manager->play_music(music);
 913   MenuManager::set_current(NULL);
 914
 915   current_ = this;
 916   load_state();
 917
 918   // if force_spawnpoint was set, move Tux there, then clear force_spawnpoint
 919   if (force_spawnpoint != "") {
 920     move_to_spawnpoint(force_spawnpoint);
 921     force_spawnpoint = "";
 922   }
 923
 924   tux->setup();
 925
 926   // register worldmap_table as worldmap in scripting
 927   using namespace scripting;
 928
 929   sq_pushroottable(global_vm);
 930   sq_pushstring(global_vm, "worldmap", -1);
 931   sq_pushobject(global_vm, worldmap_table);
 932   if(SQ_FAILED(sq_createslot(global_vm, -3)))
 933     throw SquirrelError(global_vm, "Couldn't set worldmap in roottable");
 934   sq_pop(global_vm, 1);
 935
 936   //Run default.nut just before init script
 937   try {
 938     IFileStreambuf ins(levels_path + "default.nut");
 939     std::istream in(&ins);
 940     run_script(in, "WorldMap::default.nut");
 941   } catch(std::exception& ) {
 942     // doesn't exist or erroneous; do nothing
 943   }
 944
 945   if(init_script != "") {
 946     std::istringstream in(init_script);
 947     run_script(in, "WorldMap::init");
 948   }
 949 }
 950
 951 void
 952 WorldMap::leave()
 953 {
 954   using namespace scripting;
 955
 956   // save state of world and player
 957   save_state();
 958
 959   // remove worldmap_table from roottable
 960   sq_pushroottable(global_vm);
 961   sq_pushstring(global_vm, "worldmap", -1);
 962   if(SQ_FAILED(sq_deleteslot(global_vm, -2, SQFalse)))
 963     throw SquirrelError(global_vm, "Couldn't unset worldmap in roottable");
 964   sq_pop(global_vm, 1);
 965 }
 966
 967 void
 968 WorldMap::save_state()
 969 {
 970   using namespace scripting;
 971
 972   HSQUIRRELVM vm = global_vm;
 973   int oldtop = sq_gettop(vm);
 974
 975   try {
 976     // get state table
 977     sq_pushroottable(vm);
 978     sq_pushstring(vm, "state", -1);
 979     if(SQ_FAILED(sq_get(vm, -2)))
 980       throw scripting::SquirrelError(vm, "Couldn't get state table");
 981
 982     // get or create worlds table
 983     sq_pushstring(vm, "worlds", -1);
 984     if(SQ_FAILED(sq_get(vm, -2))) {
 985       sq_pushstring(vm, "worlds", -1);
 986       sq_newtable(vm);
 987       if(SQ_FAILED(sq_createslot(vm, -3)))
 988         throw scripting::SquirrelError(vm, "Couldn't create state.worlds");
 989
 990       sq_pushstring(vm, "worlds", -1);
 991       if(SQ_FAILED(sq_get(vm, -2)))
 992         throw scripting::SquirrelError(vm, "Couldn't create.get state.worlds");
 993     }
 994
 995     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
 996     if(SQ_FAILED(sq_deleteslot(vm, -2, SQFalse)))
 997       sq_pop(vm, 1);
 998
 999     // construct new table for this worldmap
1000     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
1001     sq_newtable(vm);
1002
1003     // store tux
1004     sq_pushstring(vm, "tux", -1);
1005     sq_newtable(vm);
1006
1007     store_float(vm, "x", tux->get_tile_pos().x);
1008     store_float(vm, "y", tux->get_tile_pos().y);
1009     store_string(vm, "back", direction_to_string(tux->back_direction));
1010
1011     sq_createslot(vm, -3);
1012
1013     // levels...
1014     sq_pushstring(vm, "levels", -1);
1015     sq_newtable(vm);
1016
1017     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
1018       LevelTile* level = *i;
1019
1020       sq_pushstring(vm, level->get_name().c_str(), -1);
1021       sq_newtable(vm);
1022
1023       store_bool(vm, "solved", level->solved);
1024       store_bool(vm, "perfect", level->perfect);
1025       level->statistics.serialize_to_squirrel(vm);
1026
1027       sq_createslot(vm, -3);
1028     }
1029
1030     sq_createslot(vm, -3);
1031
1032     // overall statistics...
1033     total_stats.serialize_to_squirrel(vm);
1034
1035     // push world into worlds table
1036     sq_createslot(vm, -3);
1037   } catch(std::exception& ) {
1038     sq_settop(vm, oldtop);
1039   }
1040
1041   sq_settop(vm, oldtop);
1042
1043   if(World::current() != NULL)
1044     World::current()->save_state();
1045 }
1046
1047 void
1048 WorldMap::load_state()
1049 {
1050   using namespace scripting;
1051
1052   HSQUIRRELVM vm = global_vm;
1053   int oldtop = sq_gettop(vm);
1054
1055   try {
1056     // get state table
1057     sq_pushroottable(vm);
1058     sq_pushstring(vm, "state", -1);
1059     if(SQ_FAILED(sq_get(vm, -2)))
1060       throw scripting::SquirrelError(vm, "Couldn't get state table");
1061
1062     // get worlds table
1063     sq_pushstring(vm, "worlds", -1);
1064     if(SQ_FAILED(sq_get(vm, -2)))
1065       throw scripting::SquirrelError(vm, "Couldn't get state.worlds");
1066
1067     // get table for our world
1068     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
1069     if(SQ_FAILED(sq_get(vm, -2)))
1070       throw scripting::SquirrelError(vm, "Couldn't get state.worlds.mapfilename");
1071
1072     // load tux
1073     sq_pushstring(vm, "tux", -1);
1074     if(SQ_FAILED(sq_get(vm, -2)))
1075       throw scripting::SquirrelError(vm, "Couldn't get tux");
1076
1077     Vector p;
1078     p.x = read_float(vm, "x");
1079     p.y = read_float(vm, "y");
1080     std::string back_str = read_string(vm, "back");
1081     tux->back_direction = string_to_direction(back_str);
1082     tux->set_tile_pos(p);
1083
1084     sq_pop(vm, 1);
1085
1086     // load levels
1087     sq_pushstring(vm, "levels", -1);
1088     if(SQ_FAILED(sq_get(vm, -2)))
1089       throw scripting::SquirrelError(vm, "Couldn't get levels");
1090
1091     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
1092       LevelTile* level = *i;
1093       sq_pushstring(vm, level->get_name().c_str(), -1);
1094       if(SQ_SUCCEEDED(sq_get(vm, -2))) {
1095         level->solved = read_bool(vm, "solved");
1096         level->perfect = read_bool(vm, "perfect");
1097         if(!level->solved)
1098           level->sprite->set_action("default");
1099         else
1100           level->sprite->set_action((level->sprite->has_action("perfect") && level->perfect) ? "perfect" : "solved");
1101         level->statistics.unserialize_from_squirrel(vm);
1102         sq_pop(vm, 1);
1103       }
1104     }
1105
1106     // leave state table
1107     sq_pop(vm, 1);
1108
1109     // load overall statistics
1110     total_stats.unserialize_from_squirrel(vm);
1111
1112   } catch(std::exception& e) {
1113     log_debug << "Not loading worldmap state: " << e.what() << std::endl;
1114   }
1115   sq_settop(vm, oldtop);
1116
1117   in_level = false;
1118 }
1119
1120 size_t
1121 WorldMap::level_count()
1122 {
1123   return levels.size();
1124 }
1125
1126 size_t
1127 WorldMap::solved_level_count()
1128 {
1129   size_t count = 0;
1130   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
1131     LevelTile* level = *i;
1132
1133     if(level->solved)
1134       count++;
1135   }
1136
1137   return count;
1138 }
1139
1140 HSQUIRRELVM
1141 WorldMap::run_script(std::istream& in, const std::string& sourcename)
1142 {
1143   using namespace scripting;
1144
1145   // garbage collect thread list
1146   for(ScriptList::iterator i = scripts.begin();
1147       i != scripts.end(); ) {
1148     HSQOBJECT& object = *i;
1149     HSQUIRRELVM vm = object_to_vm(object);
1150
1151     if(sq_getvmstate(vm) != SQ_VMSTATE_SUSPENDED) {
1152       sq_release(global_vm, &object);
1153       i = scripts.erase(i);
1154       continue;
1155     }
1156
1157     ++i;
1158   }
1159
1160   HSQOBJECT object = create_thread(global_vm);
1161   scripts.push_back(object);
1162
1163   HSQUIRRELVM vm = object_to_vm(object);
1164
1165   // set worldmap_table as roottable for the thread
1166   sq_pushobject(vm, worldmap_table);
1167   sq_setroottable(vm);
1168
1169   compile_and_run(vm, in, sourcename);
1170
1171   return vm;
1172 }
1173
1174 float
1175 WorldMap::get_width() const
1176 {
1177   float width = 0;
1178   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
1179     TileMap* solids = *i;
1180     if (solids->get_width() > width) width = solids->get_width();
1181   }
1182   return width;
1183 }
1184
1185 float
1186 WorldMap::get_height() const
1187 {
1188   float height = 0;
1189   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
1190     TileMap* solids = *i;
1191     if (solids->get_height() > height) height = solids->get_height();
1192   }
1193   return height;
1194 }
1195
1196 } // namespace worldmap
1197
1198 /* EOF */