src/worldmap/worldmap.cpp

   1 //  SuperTux -  A Jump'n Run
   2 //  Copyright (C) 2004 Ingo Ruhnke <grumbel@gmail.com>
   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/input_manager.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/scripting.hpp"
  44 #include "scripting/squirrel_error.hpp"
  45 #include "scripting/squirrel_util.hpp"
  46 #include "sprite/sprite.hpp"
  47 #include "sprite/sprite_manager.hpp"
  48 #include "supertux/game_session.hpp"
  49 #include "supertux/gameconfig.hpp"
  50 #include "supertux/globals.hpp"
  51 #include "supertux/menu/menu_storage.hpp"
  52 #include "supertux/menu/options_menu.hpp"
  53 #include "supertux/menu/worldmap_menu.hpp"
  54 #include "supertux/player_status.hpp"
  55 #include "supertux/resources.hpp"
  56 #include "supertux/savegame.hpp"
  57 #include "supertux/screen_manager.hpp"
  58 #include "supertux/sector.hpp"
  59 #include "supertux/shrinkfade.hpp"
  60 #include "supertux/spawn_point.hpp"
  61 #include "supertux/textscroller.hpp"
  62 #include "supertux/tile_manager.hpp"
  63 #include "supertux/tile_set.hpp"
  64 #include "supertux/world.hpp"
  65 #include "util/file_system.hpp"
  66 #include "util/gettext.hpp"
  67 #include "util/log.hpp"
  68 #include "util/reader.hpp"
  69 #include "video/drawing_context.hpp"
  70 #include "video/surface.hpp"
  71 #include "worldmap/level.hpp"
  72 #include "worldmap/special_tile.hpp"
  73 #include "worldmap/sprite_change.hpp"
  74 #include "worldmap/tux.hpp"
  75 #include "worldmap/worldmap.hpp"
  76
  77 static const float CAMERA_PAN_SPEED = 5.0;
  78
  79 namespace worldmap {
  80
  81 WorldMap* WorldMap::current_ = NULL;
  82
  83 WorldMap::WorldMap(const std::string& filename, Savegame& savegame, const std::string& force_spawnpoint_) :
  84   tux(),
  85   m_savegame(savegame),
  86   tileset(NULL),
  87   free_tileset(false),
  88   camera_offset(),
  89   name(),
  90   music(),
  91   init_script(),
  92   game_objects(),
  93   solid_tilemaps(),
  94   passive_message_timer(),
  95   passive_message(),
  96   map_filename(),
  97   levels_path(),
  98   special_tiles(),
  99   levels(),
 100   sprite_changes(),
 101   spawn_points(),
 102   teleporters(),
 103   total_stats(),
 104   worldmap_table(),
 105   scripts(),
 106   ambient_light( 1.0f, 1.0f, 1.0f, 1.0f ),
 107   force_spawnpoint(force_spawnpoint_),
 108   in_level(false),
 109   pan_pos(),
 110   panning(false),
 111   last_position(),
 112   last_target_time()
 113 {
 114   tux = std::make_shared<Tux>(this);
 115   add_object(tux);
 116
 117   name = "<no title>";
 118   music = "music/salcon.ogg";
 119
 120   total_stats.reset();
 121
 122   // create a new squirrel table for the worldmap
 123   using namespace scripting;
 124
 125   sq_collectgarbage(global_vm);
 126   sq_newtable(global_vm);
 127   sq_pushroottable(global_vm);
 128   if(SQ_FAILED(sq_setdelegate(global_vm, -2)))
 129     throw scripting::SquirrelError(global_vm, "Couldn't set worldmap_table delegate");
 130
 131   sq_resetobject(&worldmap_table);
 132   if(SQ_FAILED(sq_getstackobj(global_vm, -1, &worldmap_table)))
 133     throw scripting::SquirrelError(global_vm, "Couldn't get table from stack");
 134
 135   sq_addref(global_vm, &worldmap_table);
 136   sq_pop(global_vm, 1);
 137
 138   SoundManager::current()->preload("sounds/warp.wav");
 139
 140   // load worldmap objects
 141   load(filename);
 142 }
 143
 144 WorldMap::~WorldMap()
 145 {
 146   using namespace scripting;
 147
 148   if(free_tileset)
 149     delete tileset;
 150
 151   for(GameObjects::iterator i = game_objects.begin();
 152       i != game_objects.end(); ++i) {
 153     GameObjectPtr& object = *i;
 154     try_unexpose(object);
 155   }
 156
 157   for(SpawnPoints::iterator i = spawn_points.begin();
 158       i != spawn_points.end(); ++i) {
 159     delete *i;
 160   }
 161
 162   for(ScriptList::iterator i = scripts.begin();
 163       i != scripts.end(); ++i) {
 164     HSQOBJECT& object = *i;
 165     sq_release(global_vm, &object);
 166   }
 167   sq_release(global_vm, &worldmap_table);
 168
 169   sq_collectgarbage(global_vm);
 170
 171   if(current_ == this)
 172     current_ = NULL;
 173 }
 174
 175 void
 176 WorldMap::add_object(GameObjectPtr object)
 177 {
 178   TileMap* tilemap = dynamic_cast<TileMap*>(object.get());
 179   if(tilemap != 0 && tilemap->is_solid()) {
 180     solid_tilemaps.push_back(tilemap);
 181   }
 182
 183   try_expose(object);
 184   game_objects.push_back(object);
 185 }
 186
 187 void
 188 WorldMap::try_expose(const GameObjectPtr& object)
 189 {
 190   ScriptInterface* object_ = dynamic_cast<ScriptInterface*>(object.get());
 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(const GameObjectPtr& object)
 201 {
 202   ScriptInterface* object_ = dynamic_cast<ScriptInterface*>(object.get());
 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   ScreenManager::current()->pop_screen();
 243   ScreenManager::current()->push_screen(std::unique_ptr<Screen>(new WorldMap(filename, m_savegame, 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      = TileManager::current()->parse_tileset_definition(*tilesets_lisp).release();
 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 = TileManager::current()->get_tileset(tileset_name);
 277       }
 278     }
 279     /* load default tileset */
 280     if(tileset == NULL) {
 281       tileset = TileManager::current()->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(std::make_shared<TileMap>(*(iter.lisp())));
 289       } else if(iter.item() == "background") {
 290         add_object(std::make_shared<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         auto level = std::make_shared<LevelTile>(levels_path, *iter.lisp());
 300         levels.push_back(level.get());
 301         add_object(level);
 302       } else if(iter.item() == "special-tile") {
 303         auto special_tile = std::make_shared<SpecialTile>(*iter.lisp());
 304         special_tiles.push_back(special_tile.get());
 305         add_object(special_tile);
 306       } else if(iter.item() == "sprite-change") {
 307         auto sprite_change = std::make_shared<SpriteChange>(*iter.lisp());
 308         sprite_changes.push_back(sprite_change.get());
 309         add_object(sprite_change);
 310       } else if(iter.item() == "teleporter") {
 311         auto teleporter = std::make_shared<Teleporter>(*iter.lisp());
 312         teleporters.push_back(teleporter.get());
 313         add_object(teleporter);
 314       } else if(iter.item() == "decal") {
 315         auto decal = std::make_shared<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
 388   } catch(std::exception& e) {
 389     log_warning << "Problem when reading level target time: " << e.what() << std::endl;
 390     return;
 391   }
 392 }
 393
 394 void WorldMap::calculate_total_stats()
 395 {
 396   total_stats.zero();
 397   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 398     LevelTile* level = *i;
 399     if (level->solved) {
 400       total_stats += level->statistics;
 401     }
 402   }
 403 }
 404
 405 void
 406 WorldMap::on_escape_press()
 407 {
 408   // Show or hide the menu
 409   if(!MenuManager::instance().is_active()) {
 410     MenuManager::instance().set_menu(MenuStorage::WORLDMAP_MENU);
 411     tux->set_direction(D_NONE);  // stop tux movement when menu is called
 412   } else {
 413     MenuManager::instance().clear_menu_stack();
 414   }
 415 }
 416
 417 Vector
 418 WorldMap::get_next_tile(Vector pos, Direction direction)
 419 {
 420   switch(direction) {
 421     case D_WEST:
 422       pos.x -= 1;
 423       break;
 424     case D_EAST:
 425       pos.x += 1;
 426       break;
 427     case D_NORTH:
 428       pos.y -= 1;
 429       break;
 430     case D_SOUTH:
 431       pos.y += 1;
 432       break;
 433     case D_NONE:
 434       break;
 435   }
 436   return pos;
 437 }
 438
 439 bool
 440 WorldMap::path_ok(Direction direction, const Vector& old_pos, Vector* new_pos)
 441 {
 442   *new_pos = get_next_tile(old_pos, direction);
 443
 444   if (!(new_pos->x >= 0 && new_pos->x < get_width()
 445         && new_pos->y >= 0 && new_pos->y < get_height()))
 446   { // New position is outsite the tilemap
 447     return false;
 448   }
 449   else
 450   { // Check if the tile allows us to go to new_pos
 451     int old_tile_data = tile_data_at(old_pos);
 452     int new_tile_data = tile_data_at(*new_pos);
 453     switch(direction)
 454     {
 455       case D_WEST:
 456         return (old_tile_data & Tile::WORLDMAP_WEST
 457                 && new_tile_data & Tile::WORLDMAP_EAST);
 458
 459       case D_EAST:
 460         return (old_tile_data & Tile::WORLDMAP_EAST
 461                 && new_tile_data & Tile::WORLDMAP_WEST);
 462
 463       case D_NORTH:
 464         return (old_tile_data & Tile::WORLDMAP_NORTH
 465                 && new_tile_data & Tile::WORLDMAP_SOUTH);
 466
 467       case D_SOUTH:
 468         return (old_tile_data & Tile::WORLDMAP_SOUTH
 469                 && new_tile_data & Tile::WORLDMAP_NORTH);
 470
 471       case D_NONE:
 472         assert(!"path_ok() can't walk if direction is NONE");
 473     }
 474     return false;
 475   }
 476 }
 477
 478 void
 479 WorldMap::finished_level(Level* gamelevel)
 480 {
 481   // TODO use Level* parameter here?
 482   LevelTile* level = at_level();
 483
 484   bool old_level_state = level->solved;
 485   level->solved = true;
 486   level->sprite->set_action("solved");
 487
 488   // deal with statistics
 489   level->statistics.merge(gamelevel->stats);
 490   calculate_total_stats();
 491   get_level_target_time(*level);
 492   if(level->statistics.completed(level->statistics, level->target_time)) {
 493     level->perfect = true;
 494     if(level->sprite->has_action("perfect"))
 495       level->sprite->set_action("perfect");
 496   }
 497
 498   save_state();
 499
 500   if (old_level_state != level->solved) {
 501     // Try to detect the next direction to which we should walk
 502     // FIXME: Mostly a hack
 503     Direction dir = D_NONE;
 504
 505     int dirdata = available_directions_at(tux->get_tile_pos());
 506     // first, test for crossroads
 507     if (dirdata == Tile::WORLDMAP_CNSE ||
 508         dirdata == Tile::WORLDMAP_CNSW ||
 509         dirdata == Tile::WORLDMAP_CNEW ||
 510         dirdata == Tile::WORLDMAP_CSEW ||
 511         dirdata == Tile::WORLDMAP_CNSEW)
 512       dir = D_NONE;
 513     else if (dirdata & Tile::WORLDMAP_NORTH
 514              && tux->back_direction != D_NORTH)
 515       dir = D_NORTH;
 516     else if (dirdata & Tile::WORLDMAP_SOUTH
 517              && tux->back_direction != D_SOUTH)
 518       dir = D_SOUTH;
 519     else if (dirdata & Tile::WORLDMAP_EAST
 520              && tux->back_direction != D_EAST)
 521       dir = D_EAST;
 522     else if (dirdata & Tile::WORLDMAP_WEST
 523              && tux->back_direction != D_WEST)
 524       dir = D_WEST;
 525
 526     if (dir != D_NONE) {
 527       tux->set_direction(dir);
 528     }
 529   }
 530
 531   if (level->extro_script != "") {
 532     try {
 533       std::istringstream in(level->extro_script);
 534       run_script(in, "worldmap:extro_script");
 535     } catch(std::exception& e) {
 536       log_warning << "Couldn't run level-extro-script: " << e.what() << std::endl;
 537     }
 538   }
 539 }
 540
 541 Vector
 542 WorldMap::get_camera_pos_for_tux() {
 543   Vector camera_offset_;
 544   Vector tux_pos = tux->get_pos();
 545   camera_offset_.x = tux_pos.x - SCREEN_WIDTH/2;
 546   camera_offset_.y = tux_pos.y - SCREEN_HEIGHT/2;
 547   return camera_offset_;
 548 }
 549
 550 void
 551 WorldMap::clamp_camera_position(Vector& c) {
 552   if (c.x < 0)
 553     c.x = 0;
 554   if (c.y < 0)
 555     c.y = 0;
 556
 557   if (c.x > (int)get_width()*32 - SCREEN_WIDTH)
 558     c.x = (int)get_width()*32 - SCREEN_WIDTH;
 559   if (c.y > (int)get_height()*32 - SCREEN_HEIGHT)
 560     c.y = (int)get_height()*32 - SCREEN_HEIGHT;
 561
 562   if (int(get_width()*32) < SCREEN_WIDTH)
 563     c.x = get_width()*16.0 - SCREEN_WIDTH/2.0;
 564   if (int(get_height()*32) < SCREEN_HEIGHT)
 565     c.y = get_height()*16.0 - SCREEN_HEIGHT/2.0;
 566 }
 567
 568 void
 569 WorldMap::update(float delta)
 570 {
 571   if (!in_level && !MenuManager::instance().is_active())
 572   {
 573     // update GameObjects
 574     for(size_t i = 0; i < game_objects.size(); ++i) {
 575       GameObjectPtr& object = game_objects[i];
 576       if(!panning || object != tux) {
 577         object->update(delta);
 578       }
 579     }
 580
 581     // remove old GameObjects
 582     for(GameObjects::iterator i = game_objects.begin();
 583         i != game_objects.end(); ) {
 584       GameObjectPtr& object = *i;
 585       if(!object->is_valid()) {
 586         try_unexpose(object);
 587         i = game_objects.erase(i);
 588       } else {
 589         ++i;
 590       }
 591     }
 592
 593     /* update solid_tilemaps list */
 594     //FIXME: this could be more efficient
 595     solid_tilemaps.clear();
 596     for(auto i = game_objects.begin(); i != game_objects.end(); ++i)
 597     {
 598       TileMap* tm = dynamic_cast<TileMap*>(i->get());
 599       if (!tm) continue;
 600       if (tm->is_solid()) solid_tilemaps.push_back(tm);
 601     }
 602
 603     Vector requested_pos;
 604
 605     // position "camera"
 606     if(!panning) {
 607       camera_offset = get_camera_pos_for_tux();
 608     } else {
 609       Vector delta__ = pan_pos - camera_offset;
 610       float mag = delta__.norm();
 611       if(mag > CAMERA_PAN_SPEED) {
 612         delta__ *= CAMERA_PAN_SPEED/mag;
 613       }
 614       camera_offset += delta__;
 615       if(camera_offset == pan_pos) {
 616         panning = false;
 617       }
 618     }
 619
 620     requested_pos = camera_offset;
 621     clamp_camera_position(camera_offset);
 622
 623     if(panning) {
 624       if(requested_pos.x != camera_offset.x) {
 625         pan_pos.x = camera_offset.x;
 626       }
 627       if(requested_pos.y != camera_offset.y) {
 628         pan_pos.y = camera_offset.y;
 629       }
 630     }
 631
 632     // handle input
 633     Controller *controller = InputManager::current()->get_controller();
 634     bool enter_level = false;
 635     if(controller->pressed(Controller::ACTION)
 636        || controller->pressed(Controller::JUMP)
 637        || controller->pressed(Controller::MENU_SELECT)) {
 638       /* some people define UP and JUMP on the same key... */
 639       if(!controller->pressed(Controller::UP))
 640         enter_level = true;
 641     }
 642     if(controller->pressed(Controller::START) ||
 643        controller->pressed(Controller::ESCAPE))
 644     {
 645       on_escape_press();
 646     }
 647
 648     if(controller->pressed(Controller::CHEAT_MENU) &&
 649        g_config->developer_mode)
 650     {
 651       MenuManager::instance().set_menu(MenuStorage::WORLDMAP_CHEAT_MENU);
 652     }
 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         SoundManager::current()->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       // automatically mark these levels as solved in case player aborts
 673       level->solved = true;
 674     }
 675
 676     if (enter_level && !tux->is_moving())
 677     {
 678       /* Check level action */
 679       LevelTile* level_ = at_level();
 680       if (!level_) {
 681         //Respawn if player on a tile with no level and nowhere to go.
 682         int tile_data = tile_data_at(tux->get_tile_pos());
 683         if(!( tile_data & ( Tile::WORLDMAP_NORTH |  Tile::WORLDMAP_SOUTH | Tile::WORLDMAP_WEST | Tile::WORLDMAP_EAST ))){
 684           log_warning << "Player at illegal position " << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << " respawning." << std::endl;
 685           move_to_spawnpoint("main");
 686           return;
 687         }
 688         log_warning << "No level to enter at: " << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << std::endl;
 689         return;
 690       }
 691
 692       if (level_->pos == tux->get_tile_pos()) {
 693         try {
 694           Vector shrinkpos = Vector(level_->pos.x*32 + 16 - camera_offset.x,
 695                                     level_->pos.y*32 +  8 - camera_offset.y);
 696           std::string levelfile = levels_path + level_->get_name();
 697
 698           // update state and savegame
 699           save_state();
 700
 701           ScreenManager::current()->push_screen(std::unique_ptr<Screen>(new GameSession(levelfile, m_savegame, &level_->statistics)),
 702                                         std::unique_ptr<ScreenFade>(new ShrinkFade(shrinkpos, 1.0f)));
 703           in_level = true;
 704         } catch(std::exception& e) {
 705           log_fatal << "Couldn't load level: " << e.what() << std::endl;
 706         }
 707       }
 708     }
 709     else
 710     {
 711       //      tux->set_direction(input_direction);
 712     }
 713   }
 714 }
 715
 716 int
 717 WorldMap::tile_data_at(Vector p)
 718 {
 719   int dirs = 0;
 720
 721   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
 722     TileMap* tilemap = *i;
 723     const Tile* tile = tilemap->get_tile((int)p.x, (int)p.y);
 724     int dirdata = tile->getData();
 725     dirs |= dirdata;
 726   }
 727
 728   return dirs;
 729 }
 730
 731 int
 732 WorldMap::available_directions_at(Vector p)
 733 {
 734   return tile_data_at(p) & Tile::WORLDMAP_DIR_MASK;
 735 }
 736
 737 LevelTile*
 738 WorldMap::at_level()
 739 {
 740   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 741     LevelTile* level = *i;
 742     if (level->pos == tux->get_tile_pos())
 743       return level;
 744   }
 745
 746   return NULL;
 747 }
 748
 749 SpecialTile*
 750 WorldMap::at_special_tile()
 751 {
 752   for(SpecialTiles::iterator i = special_tiles.begin();
 753       i != special_tiles.end(); ++i) {
 754     SpecialTile* special_tile = *i;
 755     if (special_tile->pos == tux->get_tile_pos())
 756       return special_tile;
 757   }
 758
 759   return NULL;
 760 }
 761
 762 SpriteChange*
 763 WorldMap::at_sprite_change(const Vector& pos)
 764 {
 765   for(SpriteChanges::iterator i = sprite_changes.begin();
 766       i != sprite_changes.end(); ++i) {
 767     SpriteChange* sprite_change = *i;
 768     if(sprite_change->pos == pos)
 769       return sprite_change;
 770   }
 771
 772   return NULL;
 773 }
 774
 775 Teleporter*
 776 WorldMap::at_teleporter(const Vector& pos)
 777 {
 778   for(std::vector<Teleporter*>::iterator i = teleporters.begin(); i != teleporters.end(); ++i) {
 779     Teleporter* teleporter = *i;
 780     if(teleporter->pos == pos) return teleporter;
 781   }
 782
 783   return NULL;
 784 }
 785
 786 void
 787 WorldMap::draw(DrawingContext& context)
 788 {
 789   if (int(get_width()*32) < SCREEN_WIDTH || int(get_height()*32) < SCREEN_HEIGHT)
 790     context.draw_filled_rect(Vector(0, 0), Vector(SCREEN_WIDTH, SCREEN_HEIGHT),
 791                              Color(0.0f, 0.0f, 0.0f, 1.0f), LAYER_BACKGROUND0);
 792
 793   context.set_ambient_color( ambient_light );
 794   context.push_transform();
 795   context.set_translation(camera_offset);
 796
 797   for(auto i = game_objects.begin(); i != game_objects.end(); ++i)
 798   {
 799     GameObjectPtr& object = *i;
 800     if(!panning || object != tux) {
 801       object->draw(context);
 802     }
 803   }
 804
 805   /*
 806   // FIXME: make this a runtime switch similar to draw_collrects/show_collrects?
 807   // draw visual indication of possible walk directions
 808   static int flipme = 0;
 809   if (flipme++ & 0x04)
 810   for (int x = 0; x < get_width(); x++) {
 811   for (int y = 0; y < get_height(); y++) {
 812   int data = tile_data_at(Vector(x,y));
 813   int px = x * 32;
 814   int py = y * 32;
 815   const int W = 4;
 816   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);
 817   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);
 818   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);
 819   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);
 820   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);
 821   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);
 822   }
 823   }
 824   */
 825
 826   draw_status(context);
 827   context.pop_transform();
 828 }
 829
 830 void
 831 WorldMap::draw_status(DrawingContext& context)
 832 {
 833   context.push_transform();
 834   context.set_translation(Vector(0, 0));
 835
 836   m_savegame.get_player_status()->draw(context);
 837
 838   if (!tux->is_moving()) {
 839     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
 840       LevelTile* level = *i;
 841
 842       if (level->pos == tux->get_tile_pos()) {
 843         if(level->title == "")
 844           get_level_title(*level);
 845
 846         context.draw_text(Resources::normal_font, level->title,
 847                           Vector(SCREEN_WIDTH/2,
 848                                  SCREEN_HEIGHT - Resources::normal_font->get_height() - 10),
 849                           ALIGN_CENTER, LAYER_HUD, WorldMap::level_title_color);
 850
 851         // if level is solved, draw level picture behind stats
 852         /*
 853           if (level->solved) {
 854           if (const Surface* picture = level->get_picture()) {
 855           Vector pos = Vector(SCREEN_WIDTH - picture->get_width(), SCREEN_HEIGHT - picture->get_height());
 856           context.push_transform();
 857           context.set_alpha(0.5);
 858           context.draw_surface(picture, pos, LAYER_FOREGROUND1-1);
 859           context.pop_transform();
 860           }
 861           }
 862         */
 863
 864         if (level->target_time == 0.0f)
 865           get_level_target_time(*level);
 866         level->statistics.draw_worldmap_info(context, level->target_time);
 867         break;
 868       }
 869     }
 870
 871     for(SpecialTiles::iterator i = special_tiles.begin();
 872         i != special_tiles.end(); ++i) {
 873       SpecialTile* special_tile = *i;
 874
 875       if (special_tile->pos == tux->get_tile_pos()) {
 876         /* Display an in-map message in the map, if any as been selected */
 877         if(!special_tile->map_message.empty() && !special_tile->passive_message)
 878           context.draw_text(Resources::normal_font, special_tile->map_message,
 879                             Vector(SCREEN_WIDTH/2,
 880                                    SCREEN_HEIGHT - Resources::normal_font->get_height() - 60),
 881                             ALIGN_CENTER, LAYER_FOREGROUND1, WorldMap::message_color);
 882         break;
 883       }
 884     }
 885
 886     // display teleporter messages
 887     Teleporter* teleporter = at_teleporter(tux->get_tile_pos());
 888     if (teleporter && (teleporter->message != "")) {
 889       Vector pos = Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT - Resources::normal_font->get_height() - 30);
 890       context.draw_text(Resources::normal_font, teleporter->message, pos, ALIGN_CENTER, LAYER_FOREGROUND1, WorldMap::teleporter_message_color);
 891     }
 892
 893   }
 894
 895   /* Display a passive message in the map, if needed */
 896   if(passive_message_timer.started())
 897     context.draw_text(Resources::normal_font, passive_message,
 898                       Vector(SCREEN_WIDTH/2, SCREEN_HEIGHT - Resources::normal_font->get_height() - 60),
 899                       ALIGN_CENTER, LAYER_FOREGROUND1, WorldMap::message_color);
 900
 901   context.pop_transform();
 902 }
 903
 904 void
 905 WorldMap::setup()
 906 {
 907   SoundManager::current()->play_music(music);
 908   MenuManager::instance().clear_menu_stack();
 909
 910   current_ = this;
 911   load_state();
 912
 913   // if force_spawnpoint was set, move Tux there, then clear force_spawnpoint
 914   if (force_spawnpoint != "") {
 915     move_to_spawnpoint(force_spawnpoint);
 916     force_spawnpoint = "";
 917   }
 918
 919   tux->setup();
 920
 921   // register worldmap_table as worldmap in scripting
 922   using namespace scripting;
 923
 924   sq_pushroottable(global_vm);
 925   sq_pushstring(global_vm, "worldmap", -1);
 926   sq_pushobject(global_vm, worldmap_table);
 927   if(SQ_FAILED(sq_newslot(global_vm, -3, SQFalse)))
 928     throw SquirrelError(global_vm, "Couldn't set worldmap in roottable");
 929   sq_pop(global_vm, 1);
 930
 931   //Run default.nut just before init script
 932   try {
 933     IFileStreambuf ins(levels_path + "default.nut");
 934     std::istream in(&ins);
 935     run_script(in, "WorldMap::default.nut");
 936   } catch(std::exception& ) {
 937     // doesn't exist or erroneous; do nothing
 938   }
 939
 940   if(init_script != "") {
 941     std::istringstream in(init_script);
 942     run_script(in, "WorldMap::init");
 943   }
 944 }
 945
 946 void
 947 WorldMap::leave()
 948 {
 949   using namespace scripting;
 950
 951   // save state of world and player
 952   save_state();
 953
 954   // remove worldmap_table from roottable
 955   sq_pushroottable(global_vm);
 956   sq_pushstring(global_vm, "worldmap", -1);
 957   if(SQ_FAILED(sq_deleteslot(global_vm, -2, SQFalse)))
 958     throw SquirrelError(global_vm, "Couldn't unset worldmap in roottable");
 959   sq_pop(global_vm, 1);
 960 }
 961
 962 void
 963 WorldMap::set_levels_solved(bool solved, bool perfect)
 964 {
 965   for(auto& level : levels)
 966   {
 967     level->set_solved(solved);
 968     level->set_perfect(perfect);
 969   }
 970 }
 971
 972 void
 973 WorldMap::save_state()
 974 {
 975   using namespace scripting;
 976
 977   HSQUIRRELVM vm = global_vm;
 978   int oldtop = sq_gettop(vm);
 979
 980   try {
 981     // get state table
 982     sq_pushroottable(vm);
 983     sq_pushstring(vm, "state", -1);
 984     if(SQ_FAILED(sq_get(vm, -2)))
 985       throw scripting::SquirrelError(vm, "Couldn't get state table");
 986
 987     // get or create worlds table
 988     sq_pushstring(vm, "worlds", -1);
 989     if(SQ_FAILED(sq_get(vm, -2))) {
 990       sq_pushstring(vm, "worlds", -1);
 991       sq_newtable(vm);
 992       if(SQ_FAILED(sq_newslot(vm, -3, SQFalse)))
 993         throw scripting::SquirrelError(vm, "Couldn't create state.worlds");
 994
 995       sq_pushstring(vm, "worlds", -1);
 996       if(SQ_FAILED(sq_get(vm, -2)))
 997         throw scripting::SquirrelError(vm, "Couldn't create.get state.worlds");
 998     }
 999
1000     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
1001     if(SQ_FAILED(sq_deleteslot(vm, -2, SQFalse)))
1002     {
1003     }
1004
1005     // construct new table for this worldmap
1006     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
1007     sq_newtable(vm);
1008
1009     // store tux
1010     sq_pushstring(vm, "tux", -1);
1011     sq_newtable(vm);
1012
1013     store_float(vm, "x", tux->get_tile_pos().x);
1014     store_float(vm, "y", tux->get_tile_pos().y);
1015     store_string(vm, "back", direction_to_string(tux->back_direction));
1016
1017     sq_newslot(vm, -3, SQFalse);
1018
1019     // levels...
1020     sq_pushstring(vm, "levels", -1);
1021     sq_newtable(vm);
1022
1023     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
1024       LevelTile* level = *i;
1025
1026       sq_pushstring(vm, level->get_name().c_str(), -1);
1027       sq_newtable(vm);
1028
1029       store_bool(vm, "solved", level->solved);
1030       store_bool(vm, "perfect", level->perfect);
1031       level->statistics.serialize_to_squirrel(vm);
1032
1033       sq_newslot(vm, -3, SQFalse);
1034     }
1035
1036     sq_newslot(vm, -3, SQFalse);
1037
1038     // overall statistics...
1039     total_stats.serialize_to_squirrel(vm);
1040
1041     // push world into worlds table
1042     sq_newslot(vm, -3, SQFalse);
1043   } catch(std::exception& ) {
1044     sq_settop(vm, oldtop);
1045   }
1046
1047   sq_settop(vm, oldtop);
1048
1049   m_savegame.save();
1050 }
1051
1052 void
1053 WorldMap::load_state()
1054 {
1055   using namespace scripting;
1056
1057   HSQUIRRELVM vm = global_vm;
1058   int oldtop = sq_gettop(vm);
1059
1060   try {
1061     // get state table
1062     sq_pushroottable(vm);
1063     sq_pushstring(vm, "state", -1);
1064     if(SQ_FAILED(sq_get(vm, -2)))
1065       throw scripting::SquirrelError(vm, "Couldn't get state table");
1066
1067     // get worlds table
1068     sq_pushstring(vm, "worlds", -1);
1069     if(SQ_FAILED(sq_get(vm, -2)))
1070       throw scripting::SquirrelError(vm, "Couldn't get state.worlds");
1071
1072     // get table for our world
1073     sq_pushstring(vm, map_filename.c_str(), map_filename.length());
1074     if(SQ_FAILED(sq_get(vm, -2)))
1075       throw scripting::SquirrelError(vm, "Couldn't get state.worlds.mapfilename");
1076
1077     // load tux
1078     sq_pushstring(vm, "tux", -1);
1079     if(SQ_FAILED(sq_get(vm, -2)))
1080       throw scripting::SquirrelError(vm, "Couldn't get tux");
1081
1082     Vector p;
1083     p.x = read_float(vm, "x");
1084     p.y = read_float(vm, "y");
1085     std::string back_str = read_string(vm, "back");
1086     tux->back_direction = string_to_direction(back_str);
1087     tux->set_tile_pos(p);
1088
1089     sq_pop(vm, 1);
1090
1091     // load levels
1092     sq_pushstring(vm, "levels", -1);
1093     if(SQ_FAILED(sq_get(vm, -2)))
1094       throw scripting::SquirrelError(vm, "Couldn't get levels");
1095
1096     for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
1097       LevelTile* level = *i;
1098       sq_pushstring(vm, level->get_name().c_str(), -1);
1099       if(SQ_SUCCEEDED(sq_get(vm, -2))) {
1100         level->solved = read_bool(vm, "solved");
1101         level->perfect = read_bool(vm, "perfect");
1102         if(!level->solved)
1103           level->sprite->set_action("default");
1104         else
1105           level->sprite->set_action((level->sprite->has_action("perfect") && level->perfect) ? "perfect" : "solved");
1106         level->statistics.unserialize_from_squirrel(vm);
1107         sq_pop(vm, 1);
1108       }
1109     }
1110
1111     // leave state table
1112     sq_pop(vm, 1);
1113
1114     // load overall statistics
1115     total_stats.unserialize_from_squirrel(vm);
1116
1117   } catch(std::exception& e) {
1118     log_debug << "Not loading worldmap state: " << e.what() << std::endl;
1119   }
1120   sq_settop(vm, oldtop);
1121
1122   in_level = false;
1123 }
1124
1125 size_t
1126 WorldMap::level_count()
1127 {
1128   return levels.size();
1129 }
1130
1131 size_t
1132 WorldMap::solved_level_count()
1133 {
1134   size_t count = 0;
1135   for(LevelTiles::iterator i = levels.begin(); i != levels.end(); ++i) {
1136     LevelTile* level = *i;
1137
1138     if(level->solved)
1139       count++;
1140   }
1141
1142   return count;
1143 }
1144
1145 HSQUIRRELVM
1146 WorldMap::run_script(std::istream& in, const std::string& sourcename)
1147 {
1148   using namespace scripting;
1149
1150   // garbage collect thread list
1151   for(ScriptList::iterator i = scripts.begin();
1152       i != scripts.end(); ) {
1153     HSQOBJECT& object = *i;
1154     HSQUIRRELVM vm = object_to_vm(object);
1155
1156     if(sq_getvmstate(vm) != SQ_VMSTATE_SUSPENDED) {
1157       sq_release(global_vm, &object);
1158       i = scripts.erase(i);
1159       continue;
1160     }
1161
1162     ++i;
1163   }
1164
1165   HSQOBJECT object = create_thread(global_vm);
1166   scripts.push_back(object);
1167
1168   HSQUIRRELVM vm = object_to_vm(object);
1169
1170   // set worldmap_table as roottable for the thread
1171   sq_pushobject(vm, worldmap_table);
1172   sq_setroottable(vm);
1173
1174   compile_and_run(vm, in, sourcename);
1175
1176   return vm;
1177 }
1178
1179 float
1180 WorldMap::get_width() const
1181 {
1182   float width = 0;
1183   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
1184     TileMap* solids = *i;
1185     if (solids->get_width() > width) width = solids->get_width();
1186   }
1187   return width;
1188 }
1189
1190 float
1191 WorldMap::get_height() const
1192 {
1193   float height = 0;
1194   for(std::list<TileMap*>::const_iterator i = solid_tilemaps.begin(); i != solid_tilemaps.end(); i++) {
1195     TileMap* solids = *i;
1196     if (solids->get_height() > height) height = solids->get_height();
1197   }
1198   return height;
1199 }
1200
1201 } // namespace worldmap
1202
1203 /* EOF */