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   try {
 371     lisp::Parser parser;
 372     const lisp::Lisp* root = parser.parse(levels_path + level.get_name());
 373
 374     const lisp::Lisp* level_lisp = root->get_lisp("supertux-level");
 375     if(!level_lisp)
 376       return;
 377
 378     level_lisp->get("target-time", level.target_time);
 379   } catch(std::exception& e) {
 380     log_warning << "Problem when reading level target time: " << e.what() << std::endl;
 381     return;
 382   }
 383 }
 384
 385 void WorldMap::calculate_total_stats()
 386 {
 387   total_stats.zero();
 388   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 389     LevelTile* level = *i;
 390     if (level->solved) {
 391       total_stats += level->statistics;
 392     }
 393   }
 394 }
 395
 396 void
 397 WorldMap::on_escape_press()
 398 {
 399   // Show or hide the menu
 400   if(!MenuManager::current()) {
 401     MenuManager::set_current(worldmap_menu.get());
 402     tux->set_direction(D_NONE);  // stop tux movement when menu is called
 403   } else {
 404     MenuManager::set_current(NULL);
 405   }
 406 }
 407
 408 Vector
 409 WorldMap::get_next_tile(Vector pos, Direction direction)
 410 {
 411   switch(direction) {
 412     case D_WEST:
 413       pos.x -= 1;
 414       break;
 415     case D_EAST:
 416       pos.x += 1;
 417       break;
 418     case D_NORTH:
 419       pos.y -= 1;
 420       break;
 421     case D_SOUTH:
 422       pos.y += 1;
 423       break;
 424     case D_NONE:
 425       break;
 426   }
 427   return pos;
 428 }
 429
 430 bool
 431 WorldMap::path_ok(Direction direction, const Vector& old_pos, Vector* new_pos)
 432 {
 433   *new_pos = get_next_tile(old_pos, direction);
 434
 435   if (!(new_pos->x >= 0 && new_pos->x < get_width()
 436         && new_pos->y >= 0 && new_pos->y < get_height()))
 437   { // New position is outsite the tilemap
 438     return false;
 439   }
 440   else
 441   { // Check if the tile allows us to go to new_pos
 442     int old_tile_data = tile_data_at(old_pos);
 443     int new_tile_data = tile_data_at(*new_pos);
 444     switch(direction)
 445     {
 446       case D_WEST:
 447         return (old_tile_data & Tile::WORLDMAP_WEST
 448                 && new_tile_data & Tile::WORLDMAP_EAST);
 449
 450       case D_EAST:
 451         return (old_tile_data & Tile::WORLDMAP_EAST
 452                 && new_tile_data & Tile::WORLDMAP_WEST);
 453
 454       case D_NORTH:
 455         return (old_tile_data & Tile::WORLDMAP_NORTH
 456                 && new_tile_data & Tile::WORLDMAP_SOUTH);
 457
 458       case D_SOUTH:
 459         return (old_tile_data & Tile::WORLDMAP_SOUTH
 460                 && new_tile_data & Tile::WORLDMAP_NORTH);
 461
 462       case D_NONE:
 463         assert(!"path_ok() can't walk if direction is NONE");
 464     }
 465     return false;
 466   }
 467 }
 468
 469 void
 470 WorldMap::finished_level(Level* gamelevel)
 471 {
 472   // TODO use Level* parameter here?
 473   LevelTile* level = at_level();
 474
 475   bool old_level_state = level->solved;
 476   level->solved = true;
 477   level->sprite->set_action("solved");
 478
 479   // deal with statistics
 480   level->statistics.merge(gamelevel->stats);
 481   calculate_total_stats();
 482   get_level_target_time(*level);
 483   if(level->statistics.completed(level->statistics, level->target_time)) {
 484     level->perfect = true;
 485     if(level->sprite->has_action("perfect"))
 486       level->sprite->set_action("perfect");
 487   }
 488
 489   save_state();
 490
 491   if (old_level_state != level->solved) {
 492     // Try to detect the next direction to which we should walk
 493     // FIXME: Mostly a hack
 494     Direction dir = D_NONE;
 495
 496     int dirdata = available_directions_at(tux->get_tile_pos());
 497     // first, test for crossroads
 498     if (dirdata == Tile::WORLDMAP_CNSE ||
 499         dirdata == Tile::WORLDMAP_CNSW ||
 500         dirdata == Tile::WORLDMAP_CNEW ||
 501         dirdata == Tile::WORLDMAP_CSEW ||
 502         dirdata == Tile::WORLDMAP_CNSEW)
 503       dir = D_NONE;
 504     else if (dirdata & Tile::WORLDMAP_NORTH
 505              && tux->back_direction != D_NORTH)
 506       dir = D_NORTH;
 507     else if (dirdata & Tile::WORLDMAP_SOUTH
 508              && tux->back_direction != D_SOUTH)
 509       dir = D_SOUTH;
 510     else if (dirdata & Tile::WORLDMAP_EAST
 511              && tux->back_direction != D_EAST)
 512       dir = D_EAST;
 513     else if (dirdata & Tile::WORLDMAP_WEST
 514              && tux->back_direction != D_WEST)
 515       dir = D_WEST;
 516
 517     if (dir != D_NONE) {
 518       tux->set_direction(dir);
 519     }
 520   }
 521
 522   if (level->extro_script != "") {
 523     try {
 524       std::istringstream in(level->extro_script);
 525       run_script(in, "worldmap:extro_script");
 526     } catch(std::exception& e) {
 527       log_warning << "Couldn't run level-extro-script: " << e.what() << std::endl;
 528     }
 529   }
 530 }
 531
 532 Vector
 533 WorldMap::get_camera_pos_for_tux() {
 534   Vector camera_offset;
 535   Vector tux_pos = tux->get_pos();
 536   camera_offset.x = tux_pos.x - SCREEN_WIDTH/2;
 537   camera_offset.y = tux_pos.y - SCREEN_HEIGHT/2;
 538   return camera_offset;
 539 }
 540
 541 void
 542 WorldMap::clamp_camera_position(Vector& c) {
 543   if (c.x < 0)
 544     c.x = 0;
 545   if (c.y < 0)
 546     c.y = 0;
 547
 548   if (c.x > (int)get_width()*32 - SCREEN_WIDTH)
 549     c.x = (int)get_width()*32 - SCREEN_WIDTH;
 550   if (c.y > (int)get_height()*32 - SCREEN_HEIGHT)
 551     c.y = (int)get_height()*32 - SCREEN_HEIGHT;
 552
 553   if (int(get_width()*32) < SCREEN_WIDTH)
 554     c.x = get_width()*16.0 - SCREEN_WIDTH/2.0;
 555   if (int(get_height()*32) < SCREEN_HEIGHT)
 556     c.y = get_height()*16.0 - SCREEN_HEIGHT/2.0;
 557 }
 558
 559 void
 560 WorldMap::update(float delta)
 561 {
 562   if(!in_level) {
 563     Menu* menu = MenuManager::current();
 564     if(menu != NULL) {
 565       if(menu == worldmap_menu.get()) {
 566         switch (worldmap_menu->check())
 567         {
 568           case MNID_RETURNWORLDMAP: // Return to game
 569             MenuManager::set_current(0);
 570             break;
 571           case MNID_QUITWORLDMAP: // Quit Worldmap
 572             g_screen_manager->exit_screen();
 573             break;
 574         }
 575       }
 576
 577       return;
 578     }
 579
 580     // update GameObjects
 581     for(size_t i = 0; i < game_objects.size(); ++i) {
 582       GameObject* object = game_objects[i];
 583       if(!panning || object != tux) {
 584         object->update(delta);
 585       }
 586     }
 587
 588     // remove old GameObjects
 589     for(GameObjects::iterator i = game_objects.begin();
 590         i != game_objects.end(); ) {
 591       GameObject* object = *i;
 592       if(!object->is_valid()) {
 593         try_unexpose(object);
 594         object->unref();
 595         i = game_objects.erase(i);
 596       } else {
 597         ++i;
 598       }
 599     }
 600
 601     /* update solid_tilemaps list */
 602     //FIXME: this could be more efficient
 603     solid_tilemaps.clear();
 604     for(std::vector<GameObject*>::iterator i = game_objects.begin();
 605         i != game_objects.end(); ++i)
 606     {
 607       TileMap* tm = dynamic_cast<TileMap*>(*i);
 608       if (!tm) continue;
 609       if (tm->is_solid()) solid_tilemaps.push_back(tm);
 610     }
 611
 612     Vector requested_pos;
 613
 614     // position "camera"
 615     if(!panning) {
 616       camera_offset = get_camera_pos_for_tux();
 617     } else {
 618       Vector delta = pan_pos - camera_offset;
 619       float mag = delta.norm();
 620       if(mag > CAMERA_PAN_SPEED) {
 621         delta *= CAMERA_PAN_SPEED/mag;
 622       }
 623       camera_offset += delta;
 624       if(camera_offset == pan_pos) {
 625         panning = false;
 626       }
 627     }
 628
 629     requested_pos = camera_offset;
 630     clamp_camera_position(camera_offset);
 631
 632     if(panning) {
 633       if(requested_pos.x != camera_offset.x) {
 634         pan_pos.x = camera_offset.x;
 635       }
 636       if(requested_pos.y != camera_offset.y) {
 637         pan_pos.y = camera_offset.y;
 638       }
 639     }
 640
 641     // handle input
 642     Controller *controller = g_jk_controller->get_main_controller();
 643     bool enter_level = false;
 644     if(controller->pressed(Controller::ACTION)
 645        || controller->pressed(Controller::JUMP)
 646        || controller->pressed(Controller::MENU_SELECT)) {
 647       /* some people define UP and JUMP on the same key... */
 648       if(!controller->pressed(Controller::UP))
 649         enter_level = true;
 650     }
 651     if(controller->pressed(Controller::PAUSE_MENU))
 652       on_escape_press();
 653
 654     // check for teleporters
 655     Teleporter* teleporter = at_teleporter(tux->get_tile_pos());
 656     if (teleporter && (teleporter->automatic || (enter_level && (!tux->is_moving())))) {
 657       enter_level = false;
 658       if (teleporter->worldmap != "") {
 659         change(teleporter->worldmap, teleporter->spawnpoint);
 660       } else {
 661         // TODO: an animation, camera scrolling or a fading would be a nice touch
 662         sound_manager->play("sounds/warp.wav");
 663         tux->back_direction = D_NONE;
 664         move_to_spawnpoint(teleporter->spawnpoint, true);
 665       }
 666     }
 667
 668     // check for auto-play levels
 669     LevelTile* level = at_level();
 670     if (level && (level->auto_play) && (!level->solved) && (!tux->is_moving())) {
 671       enter_level = true;
 672     }
 673
 674     if (enter_level && !tux->is_moving())
 675     {
 676       /* Check level action */
 677       LevelTile* level = at_level();
 678       if (!level) {
 679         //Respawn if player on a tile with no level and nowhere to go.
 680         int tile_data = tile_data_at(tux->get_tile_pos());
 681         if(!( tile_data & ( Tile::WORLDMAP_NORTH |  Tile::WORLDMAP_SOUTH | Tile::WORLDMAP_WEST | Tile::WORLDMAP_EAST ))){
 682           log_warning << "Player at illegal position " << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << " respawning." << std::endl;
 683           move_to_spawnpoint("main");
 684           return;
 685         }
 686         log_warning << "No level to enter at: " << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << std::endl;
 687         return;
 688       }
 689
 690       if (level->pos == tux->get_tile_pos()) {
 691         try {
 692           Vector shrinkpos = Vector(level->pos.x*32 + 16 - camera_offset.x,
 693                                     level->pos.y*32 +  8 - camera_offset.y);
 694           std::string levelfile = levels_path + level->get_name();
 695
 696           // update state and savegame
 697           save_state();
 698
 699           g_screen_manager->push_screen(new GameSession(levelfile, player_status, &level->statistics),
 700                                    new ShrinkFade(shrinkpos, 1.0f));
 701           in_level = true;
 702         } catch(std::exception& e) {
 703           log_fatal << "Couldn't load level: " << e.what() << std::endl;
 704         }
 705       }
 706     }
 707     else
 708     {
 709       //      tux->set_direction(input_direction);
 710     }
 711   }
 712 }
 713
 714 int
 715 WorldMap::tile_data_at(Vector p)
 716 {
 717   int dirs = 0;
 718
 719   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
 720     TileMap* tilemap = *i;
 721     const Tile* tile = tilemap->get_tile((int)p.x, (int)p.y);
 722     int dirdata = tile->getData();
 723     dirs |= dirdata;
 724   }
 725
 726   return dirs;
 727 }
 728
 729 int
 730 WorldMap::available_directions_at(Vector p)
 731 {
 732   return tile_data_at(p) & Tile::WORLDMAP_DIR_MASK;
 733 }
 734
 735 LevelTile*
 736 WorldMap::at_level()
 737 {
 738   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 739     LevelTile* level = *i;
 740     if (level->pos == tux->get_tile_pos())
 741       return level;
 742   }
 743
 744   return NULL;
 745 }
 746
 747 SpecialTile*
 748 WorldMap::at_special_tile()
 749 {
 750   for(SpecialTiles::iterator i = special_tiles.begin();
 751       i != special_tiles.end(); ++i) {
 752     SpecialTile* special_tile = *i;
 753     if (special_tile->pos == tux->get_tile_pos())
 754       return special_tile;
 755   }
 756
 757   return NULL;
 758 }
 759
 760 SpriteChange*
 761 WorldMap::at_sprite_change(const Vector& pos)
 762 {
 763   for(SpriteChanges::iterator i = sprite_changes.begin();
 764       i != sprite_changes.end(); ++i) {
 765     SpriteChange* sprite_change = *i;
 766     if(sprite_change->pos == pos)
 767       return sprite_change;
 768   }
 769
 770   return NULL;
 771 }
 772
 773 Teleporter*
 774 WorldMap::at_teleporter(const Vector& pos)
 775 {
 776   for(std::vector<Teleporter*>::iterator i = teleporters.begin(); i != teleporters.end(); ++i) {
 777     Teleporter* teleporter = *i;
 778     if(teleporter->pos == pos) return teleporter;
 779   }
 780
 781   return NULL;
 782 }
 783
 784 void
 785 WorldMap::draw(DrawingContext& context)
 786 {
 787   if (int(get_width()*32) < SCREEN_WIDTH || int(get_height()*32) < SCREEN_HEIGHT)
 788     context.draw_filled_rect(Vector(0, 0), Vector(SCREEN_WIDTH, SCREEN_HEIGHT),
 789                              Color(0.0f, 0.0f, 0.0f, 1.0f), LAYER_BACKGROUND0);
 790
 791   context.set_ambient_color( ambient_light );
 792   context.push_transform();
 793   context.set_translation(camera_offset);
 794
 795   for(GameObjects::iterator i = game_objects.begin();
 796       i != game_objects.end(); ++i) {
 797     GameObject* object = *i;
 798     if(!panning || object != tux) {
 799       object->draw(context);
 800     }
 801   }
 802
 803   /*
 804   // FIXME: make this a runtime switch similar to draw_collrects/show_collrects?
 805   // draw visual indication of possible walk directions
 806   static int flipme = 0;
 807   if (flipme++ & 0x04)
 808   for (int x = 0; x < get_width(); x++) {
 809   for (int y = 0; y < get_height(); y++) {
 810   int data = tile_data_at(Vector(x,y));
 811   int px = x * 32;
 812   int py = y * 32;
 813   const int W = 4;
 814   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);
 815   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);
 816   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);
 817   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);
 818   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);
 819   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);
 820   }
 821   }
 822   */
 823
 824   draw_status(context);
 825   context.pop_transform();
 826 }
 827
 828 void
 829 WorldMap::draw_status(DrawingContext& context)
 830 {
 831   context.push_transform();
 832   context.set_translation(Vector(0, 0));
 833
 834   player_status->draw(context);
 835
 836   if (!tux->is_moving()) {
 837     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 838       LevelTile* level = *i;
 839
 840       if (level->pos == tux->get_tile_pos()) {
 841         if(level->title == "")
 842           get_level_title(*level);
 843
 844         context.draw_text(Resources::normal_font, level->title,
 845                           Vector(SCREEN_WIDTH/2,
 846                                  SCREEN_HEIGHT - Resources::normal_font->get_height() - 10),
 847                           ALIGN_CENTER, LAYER_HUD, WorldMap::level_title_color);
 848
 849         // if level is solved, draw level picture behind stats
 850         /*
 851           if (level->solved) {
 852           if (const Surface* picture = level->get_picture()) {
 853           Vector pos = Vector(SCREEN_WIDTH - picture->get_width(), SCREEN_HEIGHT - picture->get_height());
 854           context.push_transform();
 855           context.set_alpha(0.5);
 856           context.draw_surface(picture, pos, LAYER_FOREGROUND1-1);
 857           context.pop_transform();
 858           }
 859           }
 860         */
 861
 862         get_level_target_time(*level);
 863         level->statistics.draw_worldmap_info(context, level->target_time);
 864         break;
 865       }
 866     }
 867
 868     for(SpecialTiles::iterator i = special_tiles.begin();
 869         i != special_tiles.end(); ++i) {
 870       SpecialTile* special_tile = *i;
 871
 872       if (special_tile->pos == tux->get_tile_pos()) {
 873         /* Display an in-map message in the map, if any as been selected */
 874         if(!special_tile->map_message.empty() && !special_tile->passive_message)
 875           context.draw_text(Resources::normal_font, special_tile->map_message,
 876                             Vector(SCREEN_WIDTH/2,
 877                                    SCREEN_HEIGHT - Resources::normal_font->get_height() - 60),
 878                             ALIGN_CENTER, LAYER_FOREGROUND1, WorldMap::message_color);
 879         break;
 880       }
 881     }
 882
 883     // display teleporter messages
 884     Teleporter* teleporter = at_teleporter(tux->get_tile_pos());
 885     if (teleporter && (teleporter->message != "")) {
 886       Vector pos = Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT - Resources::normal_font->get_height() - 30);
 887       context.draw_text(Resources::normal_font, teleporter->message, pos, ALIGN_CENTER, LAYER_FOREGROUND1, WorldMap::teleporter_message_color);
 888     }
 889
 890   }
 891
 892   /* Display a passive message in the map, if needed */
 893   if(passive_message_timer.started())
 894     context.draw_text(Resources::normal_font, passive_message,
 895                       Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT - Resources::normal_font->get_height() - 60),
 896                       ALIGN_CENTER, LAYER_FOREGROUND1, WorldMap::message_color);
 897
 898   context.pop_transform();
 899 }
 900
 901 void
 902 WorldMap::setup()
 903 {
 904   sound_manager->play_music(music);
 905   MenuManager::set_current(NULL);
 906
 907   current_ = this;
 908   load_state();
 909
 910   // if force_spawnpoint was set, move Tux there, then clear force_spawnpoint
 911   if (force_spawnpoint != "") {
 912     move_to_spawnpoint(force_spawnpoint);
 913     force_spawnpoint = "";
 914   }
 915
 916   tux->setup();
 917
 918   // register worldmap_table as worldmap in scripting
 919   using namespace scripting;
 920
 921   sq_pushroottable(global_vm);
 922   sq_pushstring(global_vm, "worldmap", -1);
 923   sq_pushobject(global_vm, worldmap_table);
 924   if(SQ_FAILED(sq_createslot(global_vm, -3)))
 925     throw SquirrelError(global_vm, "Couldn't set worldmap in roottable");
 926   sq_pop(global_vm, 1);
 927
 928   //Run default.nut just before init script
 929   try {
 930     IFileStreambuf ins(levels_path + "default.nut");
 931     std::istream in(&ins);
 932     run_script(in, "WorldMap::default.nut");
 933   } catch(std::exception& ) {
 934     // doesn't exist or erroneous; do nothing
 935   }
 936
 937   if(init_script != "") {
 938     std::istringstream in(init_script);
 939     run_script(in, "WorldMap::init");
 940   }
 941 }
 942
 943 void
 944 WorldMap::leave()
 945 {
 946   using namespace scripting;
 947
 948   // save state of world and player
 949   save_state();
 950
 951   // remove worldmap_table from roottable
 952   sq_pushroottable(global_vm);
 953   sq_pushstring(global_vm, "worldmap", -1);
 954   if(SQ_FAILED(sq_deleteslot(global_vm, -2, SQFalse)))
 955     throw SquirrelError(global_vm, "Couldn't unset worldmap in roottable");
 956   sq_pop(global_vm, 1);
 957 }
 958
 959 void
 960 WorldMap::save_state()
 961 {
 962   using namespace scripting;
 963
 964   HSQUIRRELVM vm = global_vm;
 965   int oldtop = sq_gettop(vm);
 966
 967   try {
 968     // get state table
 969     sq_pushroottable(vm);
 970     sq_pushstring(vm, "state", -1);
 971     if(SQ_FAILED(sq_get(vm, -2)))
 972       throw scripting::SquirrelError(vm, "Couldn't get state table");
 973
 974     // get or create worlds table
 975     sq_pushstring(vm, "worlds", -1);
 976     if(SQ_FAILED(sq_get(vm, -2))) {
 977       sq_pushstring(vm, "worlds", -1);
 978       sq_newtable(vm);
 979       if(SQ_FAILED(sq_createslot(vm, -3)))
 980         throw scripting::SquirrelError(vm, "Couldn't create state.worlds");
 981
 982       sq_pushstring(vm, "worlds", -1);
 983       if(SQ_FAILED(sq_get(vm, -2)))
 984         throw scripting::SquirrelError(vm, "Couldn't create.get state.worlds");
 985     }
 986
 987     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
 988     if(SQ_FAILED(sq_deleteslot(vm, -2, SQFalse)))
 989       sq_pop(vm, 1);
 990
 991     // construct new table for this worldmap
 992     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
 993     sq_newtable(vm);
 994
 995     // store tux
 996     sq_pushstring(vm, "tux", -1);
 997     sq_newtable(vm);
 998
 999     store_float(vm, "x", tux->get_tile_pos().x);
1000     store_float(vm, "y", tux->get_tile_pos().y);
1001     store_string(vm, "back", direction_to_string(tux->back_direction));
1002
1003     sq_createslot(vm, -3);
1004
1005     // levels...
1006     sq_pushstring(vm, "levels", -1);
1007     sq_newtable(vm);
1008
1009     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
1010       LevelTile* level = *i;
1011
1012       sq_pushstring(vm, level->get_name().c_str(), -1);
1013       sq_newtable(vm);
1014
1015       store_bool(vm, "solved", level->solved);
1016       store_bool(vm, "perfect", level->perfect);
1017       level->statistics.serialize_to_squirrel(vm);
1018
1019       sq_createslot(vm, -3);
1020     }
1021
1022     sq_createslot(vm, -3);
1023
1024     // overall statistics...
1025     total_stats.serialize_to_squirrel(vm);
1026
1027     // push world into worlds table
1028     sq_createslot(vm, -3);
1029   } catch(std::exception& ) {
1030     sq_settop(vm, oldtop);
1031   }
1032
1033   sq_settop(vm, oldtop);
1034
1035   if(World::current() != NULL)
1036     World::current()->save_state();
1037 }
1038
1039 void
1040 WorldMap::load_state()
1041 {
1042   using namespace scripting;
1043
1044   HSQUIRRELVM vm = global_vm;
1045   int oldtop = sq_gettop(vm);
1046
1047   try {
1048     // get state table
1049     sq_pushroottable(vm);
1050     sq_pushstring(vm, "state", -1);
1051     if(SQ_FAILED(sq_get(vm, -2)))
1052       throw scripting::SquirrelError(vm, "Couldn't get state table");
1053
1054     // get worlds table
1055     sq_pushstring(vm, "worlds", -1);
1056     if(SQ_FAILED(sq_get(vm, -2)))
1057       throw scripting::SquirrelError(vm, "Couldn't get state.worlds");
1058
1059     // get table for our world
1060     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
1061     if(SQ_FAILED(sq_get(vm, -2)))
1062       throw scripting::SquirrelError(vm, "Couldn't get state.worlds.mapfilename");
1063
1064     // load tux
1065     sq_pushstring(vm, "tux", -1);
1066     if(SQ_FAILED(sq_get(vm, -2)))
1067       throw scripting::SquirrelError(vm, "Couldn't get tux");
1068
1069     Vector p;
1070     p.x = read_float(vm, "x");
1071     p.y = read_float(vm, "y");
1072     std::string back_str = read_string(vm, "back");
1073     tux->back_direction = string_to_direction(back_str);
1074     tux->set_tile_pos(p);
1075
1076     sq_pop(vm, 1);
1077
1078     // load levels
1079     sq_pushstring(vm, "levels", -1);
1080     if(SQ_FAILED(sq_get(vm, -2)))
1081       throw scripting::SquirrelError(vm, "Couldn't get levels");
1082
1083     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
1084       LevelTile* level = *i;
1085       sq_pushstring(vm, level->get_name().c_str(), -1);
1086       if(SQ_SUCCEEDED(sq_get(vm, -2))) {
1087         level->solved = read_bool(vm, "solved");
1088         level->perfect = read_bool(vm, "perfect");
1089         if(!level->solved)
1090           level->sprite->set_action("default");
1091         else
1092           level->sprite->set_action((level->sprite->has_action("perfect") && level->perfect) ? "perfect" : "solved");
1093         level->statistics.unserialize_from_squirrel(vm);
1094         sq_pop(vm, 1);
1095       }
1096     }
1097
1098     // leave state table
1099     sq_pop(vm, 1);
1100
1101     // load overall statistics
1102     total_stats.unserialize_from_squirrel(vm);
1103
1104   } catch(std::exception& e) {
1105     log_debug << "Not loading worldmap state: " << e.what() << std::endl;
1106   }
1107   sq_settop(vm, oldtop);
1108
1109   in_level = false;
1110 }
1111
1112 size_t
1113 WorldMap::level_count()
1114 {
1115   return levels.size();
1116 }
1117
1118 size_t
1119 WorldMap::solved_level_count()
1120 {
1121   size_t count = 0;
1122   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
1123     LevelTile* level = *i;
1124
1125     if(level->solved)
1126       count++;
1127   }
1128
1129   return count;
1130 }
1131
1132 HSQUIRRELVM
1133 WorldMap::run_script(std::istream& in, const std::string& sourcename)
1134 {
1135   using namespace scripting;
1136
1137   // garbage collect thread list
1138   for(ScriptList::iterator i = scripts.begin();
1139       i != scripts.end(); ) {
1140     HSQOBJECT& object = *i;
1141     HSQUIRRELVM vm = object_to_vm(object);
1142
1143     if(sq_getvmstate(vm) != SQ_VMSTATE_SUSPENDED) {
1144       sq_release(global_vm, &object);
1145       i = scripts.erase(i);
1146       continue;
1147     }
1148
1149     ++i;
1150   }
1151
1152   HSQOBJECT object = create_thread(global_vm);
1153   scripts.push_back(object);
1154
1155   HSQUIRRELVM vm = object_to_vm(object);
1156
1157   // set worldmap_table as roottable for the thread
1158   sq_pushobject(vm, worldmap_table);
1159   sq_setroottable(vm);
1160
1161   compile_and_run(vm, in, sourcename);
1162
1163   return vm;
1164 }
1165
1166 float
1167 WorldMap::get_width() const
1168 {
1169   float width = 0;
1170   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
1171     TileMap* solids = *i;
1172     if (solids->get_width() > width) width = solids->get_width();
1173   }
1174   return width;
1175 }
1176
1177 float
1178 WorldMap::get_height() const
1179 {
1180   float height = 0;
1181   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
1182     TileMap* solids = *i;
1183     if (solids->get_height() > height) height = solids->get_height();
1184   }
1185   return height;
1186 }
1187
1188 } // namespace worldmap
1189
1190 /* EOF */