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