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_stream.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 WorldMap::calculate_total_stats()
 368 {
 369   total_stats.zero();
 370   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 371     LevelTile* level = *i;
 372     if (level->solved) {
 373       total_stats += level->statistics;
 374     }
 375   }
 376 }
 377
 378 void
 379 WorldMap::on_escape_press()
 380 {
 381   // Show or hide the menu
 382   if(!MenuManager::current()) {
 383     MenuManager::set_current(worldmap_menu.get());
 384     tux->set_direction(D_NONE);  // stop tux movement when menu is called
 385   } else {
 386     MenuManager::set_current(NULL);
 387   }
 388 }
 389
 390 Vector
 391 WorldMap::get_next_tile(Vector pos, Direction direction)
 392 {
 393   switch(direction) {
 394     case D_WEST:
 395       pos.x -= 1;
 396       break;
 397     case D_EAST:
 398       pos.x += 1;
 399       break;
 400     case D_NORTH:
 401       pos.y -= 1;
 402       break;
 403     case D_SOUTH:
 404       pos.y += 1;
 405       break;
 406     case D_NONE:
 407       break;
 408   }
 409   return pos;
 410 }
 411
 412 bool
 413 WorldMap::path_ok(Direction direction, const Vector& old_pos, Vector* new_pos)
 414 {
 415   *new_pos = get_next_tile(old_pos, direction);
 416
 417   if (!(new_pos->x >= 0 && new_pos->x < get_width()
 418         && new_pos->y >= 0 && new_pos->y < get_height()))
 419   { // New position is outsite the tilemap
 420     return false;
 421   }
 422   else
 423   { // Check if the tile allows us to go to new_pos
 424     int old_tile_data = tile_data_at(old_pos);
 425     int new_tile_data = tile_data_at(*new_pos);
 426     switch(direction)
 427     {
 428       case D_WEST:
 429         return (old_tile_data & Tile::WORLDMAP_WEST
 430                 && new_tile_data & Tile::WORLDMAP_EAST);
 431
 432       case D_EAST:
 433         return (old_tile_data & Tile::WORLDMAP_EAST
 434                 && new_tile_data & Tile::WORLDMAP_WEST);
 435
 436       case D_NORTH:
 437         return (old_tile_data & Tile::WORLDMAP_NORTH
 438                 && new_tile_data & Tile::WORLDMAP_SOUTH);
 439
 440       case D_SOUTH:
 441         return (old_tile_data & Tile::WORLDMAP_SOUTH
 442                 && new_tile_data & Tile::WORLDMAP_NORTH);
 443
 444       case D_NONE:
 445         assert(!"path_ok() can't walk if direction is NONE");
 446     }
 447     return false;
 448   }
 449 }
 450
 451 void
 452 WorldMap::finished_level(Level* gamelevel)
 453 {
 454   // TODO use Level* parameter here?
 455   LevelTile* level = at_level();
 456
 457   bool old_level_state = level->solved;
 458   level->solved = true;
 459   level->sprite->set_action("solved");
 460
 461   // deal with statistics
 462   level->statistics.merge(gamelevel->stats);
 463   calculate_total_stats();
 464
 465   save_state();
 466
 467   if (old_level_state != level->solved) {
 468     // Try to detect the next direction to which we should walk
 469     // FIXME: Mostly a hack
 470     Direction dir = D_NONE;
 471
 472     int dirdata = available_directions_at(tux->get_tile_pos());
 473     // first, test for crossroads
 474     if (dirdata == Tile::WORLDMAP_CNSE ||
 475         dirdata == Tile::WORLDMAP_CNSW ||
 476         dirdata == Tile::WORLDMAP_CNEW ||
 477         dirdata == Tile::WORLDMAP_CSEW ||
 478         dirdata == Tile::WORLDMAP_CNSEW)
 479       dir = D_NONE;
 480     else if (dirdata & Tile::WORLDMAP_NORTH
 481              && tux->back_direction != D_NORTH)
 482       dir = D_NORTH;
 483     else if (dirdata & Tile::WORLDMAP_SOUTH
 484              && tux->back_direction != D_SOUTH)
 485       dir = D_SOUTH;
 486     else if (dirdata & Tile::WORLDMAP_EAST
 487              && tux->back_direction != D_EAST)
 488       dir = D_EAST;
 489     else if (dirdata & Tile::WORLDMAP_WEST
 490              && tux->back_direction != D_WEST)
 491       dir = D_WEST;
 492
 493     if (dir != D_NONE) {
 494       tux->set_direction(dir);
 495     }
 496   }
 497
 498   if (level->extro_script != "") {
 499     try {
 500       std::istringstream in(level->extro_script);
 501       run_script(in, "worldmap:extro_script");
 502     } catch(std::exception& e) {
 503       log_warning << "Couldn't run level-extro-script: " << e.what() << std::endl;
 504     }
 505   }
 506 }
 507
 508 Vector
 509 WorldMap::get_camera_pos_for_tux() {
 510   Vector camera_offset;
 511   Vector tux_pos = tux->get_pos();
 512   camera_offset.x = tux_pos.x - SCREEN_WIDTH/2;
 513   camera_offset.y = tux_pos.y - SCREEN_HEIGHT/2;
 514   return camera_offset;
 515 }
 516
 517 void
 518 WorldMap::clamp_camera_position(Vector& c) {
 519   if (c.x < 0)
 520     c.x = 0;
 521   if (c.y < 0)
 522     c.y = 0;
 523
 524   if (c.x > (int)get_width()*32 - SCREEN_WIDTH)
 525     c.x = (int)get_width()*32 - SCREEN_WIDTH;
 526   if (c.y > (int)get_height()*32 - SCREEN_HEIGHT)
 527     c.y = (int)get_height()*32 - SCREEN_HEIGHT;
 528
 529   if (int(get_width()*32) < SCREEN_WIDTH)
 530     c.x = get_width()*16.0 - SCREEN_WIDTH/2.0;
 531   if (int(get_height()*32) < SCREEN_HEIGHT)
 532     c.y = get_height()*16.0 - SCREEN_HEIGHT/2.0;
 533 }
 534
 535 void
 536 WorldMap::update(float delta)
 537 {
 538   if(!in_level) {
 539     Menu* menu = MenuManager::current();
 540     if(menu != NULL) {
 541       if(menu == worldmap_menu.get()) {
 542         switch (worldmap_menu->check())
 543         {
 544           case MNID_RETURNWORLDMAP: // Return to game
 545             MenuManager::set_current(0);
 546             break;
 547           case MNID_QUITWORLDMAP: // Quit Worldmap
 548             g_screen_manager->exit_screen();
 549             break;
 550         }
 551       }
 552
 553       return;
 554     }
 555
 556     // update GameObjects
 557     for(size_t i = 0; i < game_objects.size(); ++i) {
 558       GameObject* object = game_objects[i];
 559       if(!panning || object != tux) {
 560         object->update(delta);
 561       }
 562     }
 563
 564     // remove old GameObjects
 565     for(GameObjects::iterator i = game_objects.begin();
 566         i != game_objects.end(); ) {
 567       GameObject* object = *i;
 568       if(!object->is_valid()) {
 569         try_unexpose(object);
 570         object->unref();
 571         i = game_objects.erase(i);
 572       } else {
 573         ++i;
 574       }
 575     }
 576
 577     /* update solid_tilemaps list */
 578     //FIXME: this could be more efficient
 579     solid_tilemaps.clear();
 580     for(std::vector<GameObject*>::iterator i = game_objects.begin();
 581         i != game_objects.end(); ++i)
 582     {
 583       TileMap* tm = dynamic_cast<TileMap*>(*i);
 584       if (!tm) continue;
 585       if (tm->is_solid()) solid_tilemaps.push_back(tm);
 586     }
 587
 588     Vector requested_pos;
 589
 590     // position "camera"
 591     if(!panning) {
 592       camera_offset = get_camera_pos_for_tux();
 593     } else {
 594       Vector delta = pan_pos - camera_offset;
 595       float mag = delta.norm();
 596       if(mag > CAMERA_PAN_SPEED) {
 597         delta *= CAMERA_PAN_SPEED/mag;
 598       }
 599       camera_offset += delta;
 600       if(camera_offset == pan_pos) {
 601         panning = false;
 602       }
 603     }
 604
 605     requested_pos = camera_offset;
 606     clamp_camera_position(camera_offset);
 607
 608     if(panning) {
 609       if(requested_pos.x != camera_offset.x) {
 610         pan_pos.x = camera_offset.x;
 611       }
 612       if(requested_pos.y != camera_offset.y) {
 613         pan_pos.y = camera_offset.y;
 614       }
 615     }
 616
 617     // handle input
 618     bool enter_level = false;
 619     if(g_main_controller->pressed(Controller::ACTION)
 620        || g_main_controller->pressed(Controller::JUMP)
 621        || g_main_controller->pressed(Controller::MENU_SELECT)) {
 622       /* some people define UP and JUMP on the same key... */
 623       if(!g_main_controller->pressed(Controller::UP))
 624         enter_level = true;
 625     }
 626     if(g_main_controller->pressed(Controller::PAUSE_MENU))
 627       on_escape_press();
 628
 629     // check for teleporters
 630     Teleporter* teleporter = at_teleporter(tux->get_tile_pos());
 631     if (teleporter && (teleporter->automatic || (enter_level && (!tux->is_moving())))) {
 632       enter_level = false;
 633       if (teleporter->worldmap != "") {
 634         change(teleporter->worldmap, teleporter->spawnpoint);
 635       } else {
 636         // TODO: an animation, camera scrolling or a fading would be a nice touch
 637         sound_manager->play("sounds/warp.wav");
 638         tux->back_direction = D_NONE;
 639         move_to_spawnpoint(teleporter->spawnpoint, true);
 640       }
 641     }
 642
 643     // check for auto-play levels
 644     LevelTile* level = at_level();
 645     if (level && (level->auto_play) && (!level->solved) && (!tux->is_moving())) {
 646       enter_level = true;
 647     }
 648
 649     if (enter_level && !tux->is_moving())
 650     {
 651       /* Check level action */
 652       LevelTile* level = at_level();
 653       if (!level) {
 654         //Respawn if player on a tile with no level and nowhere to go.
 655         int tile_data = tile_data_at(tux->get_tile_pos());
 656         if(!( tile_data & ( Tile::WORLDMAP_NORTH |  Tile::WORLDMAP_SOUTH | Tile::WORLDMAP_WEST | Tile::WORLDMAP_EAST ))){
 657           log_warning << "Player at illegal position " << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << " respawning." << std::endl;
 658           move_to_spawnpoint("main");
 659           return;
 660         }
 661         log_warning << "No level to enter at: " << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << std::endl;
 662         return;
 663       }
 664
 665       if (level->pos == tux->get_tile_pos()) {
 666         try {
 667           Vector shrinkpos = Vector(level->pos.x*32 + 16 - camera_offset.x,
 668                                     level->pos.y*32 +  8 - camera_offset.y);
 669           std::string levelfile = levels_path + level->get_name();
 670
 671           // update state and savegame
 672           save_state();
 673
 674           g_screen_manager->push_screen(new GameSession(levelfile, player_status, &level->statistics),
 675                                    new ShrinkFade(shrinkpos, 1.0f));
 676           in_level = true;
 677         } catch(std::exception& e) {
 678           log_fatal << "Couldn't load level: " << e.what() << std::endl;
 679         }
 680       }
 681     }
 682     else
 683     {
 684       //      tux->set_direction(input_direction);
 685     }
 686   }
 687 }
 688
 689 int
 690 WorldMap::tile_data_at(Vector p)
 691 {
 692   int dirs = 0;
 693
 694   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
 695     TileMap* tilemap = *i;
 696     const Tile* tile = tilemap->get_tile((int)p.x, (int)p.y);
 697     int dirdata = tile->getData();
 698     dirs |= dirdata;
 699   }
 700
 701   return dirs;
 702 }
 703
 704 int
 705 WorldMap::available_directions_at(Vector p)
 706 {
 707   return tile_data_at(p) & Tile::WORLDMAP_DIR_MASK;
 708 }
 709
 710 LevelTile*
 711 WorldMap::at_level()
 712 {
 713   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 714     LevelTile* level = *i;
 715     if (level->pos == tux->get_tile_pos())
 716       return level;
 717   }
 718
 719   return NULL;
 720 }
 721
 722 SpecialTile*
 723 WorldMap::at_special_tile()
 724 {
 725   for(SpecialTiles::iterator i = special_tiles.begin();
 726       i != special_tiles.end(); ++i) {
 727     SpecialTile* special_tile = *i;
 728     if (special_tile->pos == tux->get_tile_pos())
 729       return special_tile;
 730   }
 731
 732   return NULL;
 733 }
 734
 735 SpriteChange*
 736 WorldMap::at_sprite_change(const Vector& pos)
 737 {
 738   for(SpriteChanges::iterator i = sprite_changes.begin();
 739       i != sprite_changes.end(); ++i) {
 740     SpriteChange* sprite_change = *i;
 741     if(sprite_change->pos == pos)
 742       return sprite_change;
 743   }
 744
 745   return NULL;
 746 }
 747
 748 Teleporter*
 749 WorldMap::at_teleporter(const Vector& pos)
 750 {
 751   for(std::vector<Teleporter*>::iterator i = teleporters.begin(); i != teleporters.end(); ++i) {
 752     Teleporter* teleporter = *i;
 753     if(teleporter->pos == pos) return teleporter;
 754   }
 755
 756   return NULL;
 757 }
 758
 759 void
 760 WorldMap::draw(DrawingContext& context)
 761 {
 762   if (int(get_width()*32) < SCREEN_WIDTH || int(get_height()*32) < SCREEN_HEIGHT)
 763     context.draw_filled_rect(Vector(0, 0), Vector(SCREEN_WIDTH, SCREEN_HEIGHT),
 764                              Color(0.0f, 0.0f, 0.0f, 1.0f), LAYER_BACKGROUND0);
 765
 766   context.set_ambient_color( ambient_light );
 767   context.push_transform();
 768   context.set_translation(camera_offset);
 769
 770   for(GameObjects::iterator i = game_objects.begin();
 771       i != game_objects.end(); ++i) {
 772     GameObject* object = *i;
 773     if(!panning || object != tux) {
 774       object->draw(context);
 775     }
 776   }
 777
 778   /*
 779   // FIXME: make this a runtime switch similar to draw_collrects/show_collrects?
 780   // draw visual indication of possible walk directions
 781   static int flipme = 0;
 782   if (flipme++ & 0x04)
 783   for (int x = 0; x < get_width(); x++) {
 784   for (int y = 0; y < get_height(); y++) {
 785   int data = tile_data_at(Vector(x,y));
 786   int px = x * 32;
 787   int py = y * 32;
 788   const int W = 4;
 789   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);
 790   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);
 791   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);
 792   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);
 793   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);
 794   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);
 795   }
 796   }
 797   */
 798
 799   draw_status(context);
 800   context.pop_transform();
 801 }
 802
 803 void
 804 WorldMap::draw_status(DrawingContext& context)
 805 {
 806   context.push_transform();
 807   context.set_translation(Vector(0, 0));
 808
 809   player_status->draw(context);
 810
 811   if (!tux->is_moving()) {
 812     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 813       LevelTile* level = *i;
 814
 815       if (level->pos == tux->get_tile_pos()) {
 816         if(level->title == "")
 817           get_level_title(*level);
 818
 819         context.draw_text(Resources::normal_font, level->title,
 820                           Vector(SCREEN_WIDTH/2,
 821                                  SCREEN_HEIGHT - Resources::normal_font->get_height() - 30),
 822                           ALIGN_CENTER, LAYER_FOREGROUND1, WorldMap::level_title_color);
 823
 824         // if level is solved, draw level picture behind stats
 825         /*
 826           if (level->solved) {
 827           if (const Surface* picture = level->get_picture()) {
 828           Vector pos = Vector(SCREEN_WIDTH - picture->get_width(), SCREEN_HEIGHT - picture->get_height());
 829           context.push_transform();
 830           context.set_alpha(0.5);
 831           context.draw_surface(picture, pos, LAYER_FOREGROUND1-1);
 832           context.pop_transform();
 833           }
 834           }
 835         */
 836
 837         level->statistics.draw_worldmap_info(context);
 838         break;
 839       }
 840     }
 841
 842     for(SpecialTiles::iterator i = special_tiles.begin();
 843         i != special_tiles.end(); ++i) {
 844       SpecialTile* special_tile = *i;
 845
 846       if (special_tile->pos == tux->get_tile_pos()) {
 847         /* Display an in-map message in the map, if any as been selected */
 848         if(!special_tile->map_message.empty() && !special_tile->passive_message)
 849           context.draw_text(Resources::normal_font, special_tile->map_message,
 850                             Vector(SCREEN_WIDTH/2,
 851                                    SCREEN_HEIGHT - Resources::normal_font->get_height() - 60),
 852                             ALIGN_CENTER, LAYER_FOREGROUND1, WorldMap::message_color);
 853         break;
 854       }
 855     }
 856
 857     // display teleporter messages
 858     Teleporter* teleporter = at_teleporter(tux->get_tile_pos());
 859     if (teleporter && (teleporter->message != "")) {
 860       Vector pos = Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT - Resources::normal_font->get_height() - 30);
 861       context.draw_text(Resources::normal_font, teleporter->message, pos, ALIGN_CENTER, LAYER_FOREGROUND1, WorldMap::teleporter_message_color);
 862     }
 863
 864   }
 865
 866   /* Display a passive message in the map, if needed */
 867   if(passive_message_timer.started())
 868     context.draw_text(Resources::normal_font, passive_message,
 869                       Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT - Resources::normal_font->get_height() - 60),
 870                       ALIGN_CENTER, LAYER_FOREGROUND1, WorldMap::message_color);
 871
 872   context.pop_transform();
 873 }
 874
 875 void
 876 WorldMap::setup()
 877 {
 878   sound_manager->play_music(music);
 879   MenuManager::set_current(NULL);
 880
 881   current_ = this;
 882   load_state();
 883
 884   // if force_spawnpoint was set, move Tux there, then clear force_spawnpoint
 885   if (force_spawnpoint != "") {
 886     move_to_spawnpoint(force_spawnpoint);
 887     force_spawnpoint = "";
 888   }
 889
 890   tux->setup();
 891
 892   // register worldmap_table as worldmap in scripting
 893   using namespace scripting;
 894
 895   sq_pushroottable(global_vm);
 896   sq_pushstring(global_vm, "worldmap", -1);
 897   sq_pushobject(global_vm, worldmap_table);
 898   if(SQ_FAILED(sq_createslot(global_vm, -3)))
 899     throw SquirrelError(global_vm, "Couldn't set worldmap in roottable");
 900   sq_pop(global_vm, 1);
 901
 902   //Run default.nut just before init script
 903   try {
 904     IFileStream in(levels_path + "/default.nut");
 905     run_script(in, "WorldMap::default.nut");
 906   } catch(std::exception& ) {
 907     // doesn't exist or erroneous; do nothing
 908   }
 909
 910   if(init_script != "") {
 911     std::istringstream in(init_script);
 912     run_script(in, "WorldMap::init");
 913   }
 914 }
 915
 916 void
 917 WorldMap::leave()
 918 {
 919   using namespace scripting;
 920
 921   // save state of world and player
 922   save_state();
 923
 924   // remove worldmap_table from roottable
 925   sq_pushroottable(global_vm);
 926   sq_pushstring(global_vm, "worldmap", -1);
 927   if(SQ_FAILED(sq_deleteslot(global_vm, -2, SQFalse)))
 928     throw SquirrelError(global_vm, "Couldn't unset worldmap in roottable");
 929   sq_pop(global_vm, 1);
 930 }
 931
 932 void
 933 WorldMap::save_state()
 934 {
 935   using namespace scripting;
 936
 937   HSQUIRRELVM vm = global_vm;
 938   int oldtop = sq_gettop(vm);
 939
 940   try {
 941     // get state table
 942     sq_pushroottable(vm);
 943     sq_pushstring(vm, "state", -1);
 944     if(SQ_FAILED(sq_get(vm, -2)))
 945       throw scripting::SquirrelError(vm, "Couldn't get state table");
 946
 947     // get or create worlds table
 948     sq_pushstring(vm, "worlds", -1);
 949     if(SQ_FAILED(sq_get(vm, -2))) {
 950       sq_pushstring(vm, "worlds", -1);
 951       sq_newtable(vm);
 952       if(SQ_FAILED(sq_createslot(vm, -3)))
 953         throw scripting::SquirrelError(vm, "Couldn't create state.worlds");
 954
 955       sq_pushstring(vm, "worlds", -1);
 956       if(SQ_FAILED(sq_get(vm, -2)))
 957         throw scripting::SquirrelError(vm, "Couldn't create.get state.worlds");
 958     }
 959
 960     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
 961     if(SQ_FAILED(sq_deleteslot(vm, -2, SQFalse)))
 962       sq_pop(vm, 1);
 963
 964     // construct new table for this worldmap
 965     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
 966     sq_newtable(vm);
 967
 968     // store tux
 969     sq_pushstring(vm, "tux", -1);
 970     sq_newtable(vm);
 971
 972     store_float(vm, "x", tux->get_tile_pos().x);
 973     store_float(vm, "y", tux->get_tile_pos().y);
 974     store_string(vm, "back", direction_to_string(tux->back_direction));
 975
 976     sq_createslot(vm, -3);
 977
 978     // levels...
 979     sq_pushstring(vm, "levels", -1);
 980     sq_newtable(vm);
 981
 982     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 983       LevelTile* level = *i;
 984
 985       sq_pushstring(vm, level->get_name().c_str(), -1);
 986       sq_newtable(vm);
 987
 988       store_bool(vm, "solved", level->solved);
 989       level->statistics.serialize_to_squirrel(vm);
 990
 991       sq_createslot(vm, -3);
 992     }
 993
 994     sq_createslot(vm, -3);
 995
 996     // overall statistics...
 997     total_stats.serialize_to_squirrel(vm);
 998
 999     // push world into worlds table
1000     sq_createslot(vm, -3);
1001   } catch(std::exception& ) {
1002     sq_settop(vm, oldtop);
1003   }
1004
1005   sq_settop(vm, oldtop);
1006
1007   if(World::current() != NULL)
1008     World::current()->save_state();
1009 }
1010
1011 void
1012 WorldMap::load_state()
1013 {
1014   using namespace scripting;
1015
1016   HSQUIRRELVM vm = global_vm;
1017   int oldtop = sq_gettop(vm);
1018
1019   try {
1020     // get state table
1021     sq_pushroottable(vm);
1022     sq_pushstring(vm, "state", -1);
1023     if(SQ_FAILED(sq_get(vm, -2)))
1024       throw scripting::SquirrelError(vm, "Couldn't get state table");
1025
1026     // get worlds table
1027     sq_pushstring(vm, "worlds", -1);
1028     if(SQ_FAILED(sq_get(vm, -2)))
1029       throw scripting::SquirrelError(vm, "Couldn't get state.worlds");
1030
1031     // get table for our world
1032     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
1033     if(SQ_FAILED(sq_get(vm, -2)))
1034       throw scripting::SquirrelError(vm, "Couldn't get state.worlds.mapfilename");
1035
1036     // load tux
1037     sq_pushstring(vm, "tux", -1);
1038     if(SQ_FAILED(sq_get(vm, -2)))
1039       throw scripting::SquirrelError(vm, "Couldn't get tux");
1040
1041     Vector p;
1042     p.x = read_float(vm, "x");
1043     p.y = read_float(vm, "y");
1044     std::string back_str = read_string(vm, "back");
1045     tux->back_direction = string_to_direction(back_str);
1046     tux->set_tile_pos(p);
1047
1048     sq_pop(vm, 1);
1049
1050     // load levels
1051     sq_pushstring(vm, "levels", -1);
1052     if(SQ_FAILED(sq_get(vm, -2)))
1053       throw scripting::SquirrelError(vm, "Couldn't get levels");
1054
1055     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
1056       LevelTile* level = *i;
1057       sq_pushstring(vm, level->get_name().c_str(), -1);
1058       if(SQ_SUCCEEDED(sq_get(vm, -2))) {
1059         level->solved = read_bool(vm, "solved");
1060         level->sprite->set_action(level->solved ? "solved" : "default");
1061         level->statistics.unserialize_from_squirrel(vm);
1062         sq_pop(vm, 1);
1063       }
1064     }
1065
1066     // leave state table
1067     sq_pop(vm, 1);
1068
1069     // load overall statistics
1070     total_stats.unserialize_from_squirrel(vm);
1071
1072   } catch(std::exception& e) {
1073     log_debug << "Not loading worldmap state: " << e.what() << std::endl;
1074   }
1075   sq_settop(vm, oldtop);
1076
1077   in_level = false;
1078 }
1079
1080 size_t
1081 WorldMap::level_count()
1082 {
1083   return levels.size();
1084 }
1085
1086 size_t
1087 WorldMap::solved_level_count()
1088 {
1089   size_t count = 0;
1090   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
1091     LevelTile* level = *i;
1092
1093     if(level->solved)
1094       count++;
1095   }
1096
1097   return count;
1098 }
1099
1100 HSQUIRRELVM
1101 WorldMap::run_script(std::istream& in, const std::string& sourcename)
1102 {
1103   using namespace scripting;
1104
1105   // garbage collect thread list
1106   for(ScriptList::iterator i = scripts.begin();
1107       i != scripts.end(); ) {
1108     HSQOBJECT& object = *i;
1109     HSQUIRRELVM vm = object_to_vm(object);
1110
1111     if(sq_getvmstate(vm) != SQ_VMSTATE_SUSPENDED) {
1112       sq_release(global_vm, &object);
1113       i = scripts.erase(i);
1114       continue;
1115     }
1116
1117     ++i;
1118   }
1119
1120   HSQOBJECT object = create_thread(global_vm);
1121   scripts.push_back(object);
1122
1123   HSQUIRRELVM vm = object_to_vm(object);
1124
1125   // set worldmap_table as roottable for the thread
1126   sq_pushobject(vm, worldmap_table);
1127   sq_setroottable(vm);
1128
1129   compile_and_run(vm, in, sourcename);
1130
1131   return vm;
1132 }
1133
1134 float
1135 WorldMap::get_width() const
1136 {
1137   float width = 0;
1138   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
1139     TileMap* solids = *i;
1140     if (solids->get_width() > width) width = solids->get_width();
1141   }
1142   return width;
1143 }
1144
1145 float
1146 WorldMap::get_height() const
1147 {
1148   float height = 0;
1149   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
1150     TileMap* solids = *i;
1151     if (solids->get_height() > height) height = solids->get_height();
1152   }
1153   return height;
1154 }
1155
1156 } // namespace worldmap
1157
1158 /* EOF */