src/worldmap.cpp

   1 //  $Id$
   2 //
   3 //  SuperTux -  A Jump'n Run
   4 //  Copyright (C) 2004 Ingo Ruhnke <grumbel@gmx.de>
   5 //
   6 //  This program is free software; you can redistribute it and/or
   7 //  modify it under the terms of the GNU General Public License
   8 //  as published by the Free Software Foundation; either version 2
   9 //  of the License, or (at your option) any later version.
  10 //
  11 //  This program is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //  GNU General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU General Public License
  17 //  along with this program; if not, write to the Free Software
  18 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19
  20 #include <iostream>
  21 #include <fstream>
  22 #include <vector>
  23 #include <assert.h>
  24 #include "globals.h"
  25 #include "texture.h"
  26 #include "screen.h"
  27 #include "lispreader.h"
  28 #include "gameloop.h"
  29 #include "setup.h"
  30 #include "worldmap.h"
  31
  32 namespace WorldMapNS {
  33
  34 TileManager* TileManager::instance_  = 0;
  35
  36 TileManager::TileManager()
  37 {
  38   std::string stwt_filename = datadir +  "images/worldmap/antarctica.stwt";
  39   lisp_object_t* root_obj = lisp_read_from_file(stwt_filename);
  40
  41   if (!root_obj)
  42     st_abort("Couldn't load file", stwt_filename);
  43
  44   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap-tiles") == 0)
  45     {
  46       lisp_object_t* cur = lisp_cdr(root_obj);
  47
  48       while(!lisp_nil_p(cur))
  49         {
  50           lisp_object_t* element = lisp_car(cur);
  51
  52           if (strcmp(lisp_symbol(lisp_car(element)), "tile") == 0)
  53             {
  54               int id = 0;
  55               std::string filename = "<invalid>";
  56
  57               Tile* tile = new Tile;
  58               tile->north = true;
  59               tile->east  = true;
  60               tile->south = true;
  61               tile->west  = true;
  62               tile->stop  = true;
  63
  64               LispReader reader(lisp_cdr(element));
  65               reader.read_int("id",  &id);
  66               reader.read_bool("north", &tile->north);
  67               reader.read_bool("south", &tile->south);
  68               reader.read_bool("west",  &tile->west);
  69               reader.read_bool("east",  &tile->east);
  70               reader.read_bool("stop",  &tile->stop);
  71               reader.read_string("image",  &filename);
  72
  73               tile->sprite = new Surface(
  74                            datadir +  "/images/worldmap/" + filename,
  75                            USE_ALPHA);
  76
  77               if (id >= int(tiles.size()))
  78                 tiles.resize(id+1);
  79
  80               tiles[id] = tile;
  81             }
  82           else
  83             {
  84               puts("Unhandled symbol");
  85             }
  86
  87           cur = lisp_cdr(cur);
  88         }
  89     }
  90   else
  91     {
  92       assert(0);
  93     }
  94 }
  95
  96 Tile*
  97 TileManager::get(int i)
  98 {
  99   assert(i >=0 && i < int(tiles.size()));
 100   return tiles[i];
 101 }
 102
 103 Tux::Tux(WorldMap* worldmap_)
 104   : worldmap(worldmap_)
 105 {
 106   sprite = new Surface(datadir +  "/images/worldmap/tux.png", USE_ALPHA);
 107   offset = 0;
 108   moving = false;
 109   tile_pos.x = 5;
 110   tile_pos.y = 5;
 111   direction = NONE;
 112   input_direction = NONE;
 113 }
 114
 115 void
 116 Tux::draw(const Point& offset)
 117 {
 118   Point pos = get_pos();
 119   sprite->draw(pos.x + offset.x,
 120                pos.y + offset.y);
 121 }
 122
 123
 124 Point
 125 Tux::get_pos()
 126 {
 127   float x = tile_pos.x * 32;
 128   float y = tile_pos.y * 32;
 129
 130   switch(direction)
 131     {
 132     case WEST:
 133       x -= offset - 32;
 134       break;
 135     case EAST:
 136       x += offset - 32;
 137       break;
 138     case NORTH:
 139       y -= offset - 32;
 140       break;
 141     case SOUTH:
 142       y += offset - 32;
 143       break;
 144     case NONE:
 145       break;
 146     }
 147
 148   return Point((int)x, (int)y);
 149 }
 150
 151 void
 152 Tux::stop()
 153 {
 154   offset = 0;
 155   direction = NONE;
 156   moving = false;
 157 }
 158
 159 void
 160 Tux::update(float delta)
 161 {
 162   if (!moving)
 163     {
 164       if (input_direction != NONE)
 165         { // We got a new direction, so lets start walking when possible
 166           Point next_tile;
 167           if (worldmap->path_ok(input_direction, tile_pos, &next_tile))
 168             {
 169               tile_pos = next_tile;
 170               moving = true;
 171               direction = input_direction;
 172             }
 173         }
 174     }
 175   else
 176     {
 177       // Let tux walk a few pixels (20 pixel/sec)
 178       offset += 20.0f * delta;
 179
 180       if (offset > 32)
 181         { // We reached the next tile, so we check what to do now
 182           offset -= 32;
 183
 184           if (worldmap->at(tile_pos)->stop)
 185             {
 186               stop();
 187             }
 188           else
 189             {
 190               Point next_tile;
 191               if (worldmap->path_ok(direction, tile_pos, &next_tile))
 192                 {
 193                   tile_pos = next_tile;
 194                 }
 195               else
 196                 {
 197                   puts("Tilemap data is buggy");
 198                   stop();
 199                 }
 200             }
 201         }
 202     }
 203 }
 204
 205 WorldMap::WorldMap()
 206 {
 207   tux = new Tux(this);
 208
 209   quit = false;
 210   width  = 20;
 211   height = 15;
 212
 213   level_sprite = new Surface(datadir +  "/images/worldmap/levelmarker.png", USE_ALPHA);
 214   leveldot_green = new Surface(datadir +  "/images/worldmap/leveldot_green.png", USE_ALPHA);
 215   leveldot_red = new Surface(datadir +  "/images/worldmap/leveldot_red.png", USE_ALPHA);
 216
 217   input_direction = NONE;
 218   enter_level = false;
 219
 220   name = "<no name>";
 221   music = "SALCON.MOD";
 222   song = 0;
 223
 224   load_map();
 225 }
 226
 227 WorldMap::~WorldMap()
 228 {
 229   delete tux;
 230 }
 231
 232 void
 233 WorldMap::load_map()
 234 {
 235   std::string filename = datadir +  "levels/default/worldmap.stwm";
 236
 237   lisp_object_t* root_obj = lisp_read_from_file(filename);
 238   if (!root_obj)
 239     st_abort("Couldn't load file", filename);
 240
 241   if (strcmp(lisp_symbol(lisp_car(root_obj)), "supertux-worldmap") == 0)
 242     {
 243       lisp_object_t* cur = lisp_cdr(root_obj);
 244
 245       while(!lisp_nil_p(cur))
 246         {
 247           lisp_object_t* element = lisp_car(cur);
 248
 249           if (strcmp(lisp_symbol(lisp_car(element)), "tilemap") == 0)
 250             {
 251               LispReader reader(lisp_cdr(element));
 252               reader.read_int("width",  &width);
 253               reader.read_int("height", &height);
 254               reader.read_int_vector("data", &tilemap);
 255             }
 256           else if (strcmp(lisp_symbol(lisp_car(element)), "properties") == 0)
 257             {
 258               LispReader reader(lisp_cdr(element));
 259               reader.read_string("name",  &name);
 260               reader.read_string("music", &music);
 261             }
 262           else if (strcmp(lisp_symbol(lisp_car(element)), "levels") == 0)
 263             {
 264               lisp_object_t* cur = lisp_cdr(element);
 265
 266               while(!lisp_nil_p(cur))
 267                 {
 268                   lisp_object_t* element = lisp_car(cur);
 269
 270                   if (strcmp(lisp_symbol(lisp_car(element)), "level") == 0)
 271                     {
 272                       Level level;
 273                       LispReader reader(lisp_cdr(element));
 274                       level.solved = false;
 275                       reader.read_string("name",  &level.name);
 276                       reader.read_int("x", &level.x);
 277                       reader.read_int("y", &level.y);
 278                       levels.push_back(level);
 279                     }
 280
 281                   cur = lisp_cdr(cur);
 282                 }
 283             }
 284           else
 285             {
 286
 287             }
 288
 289           cur = lisp_cdr(cur);
 290         }
 291     }
 292 }
 293
 294 void
 295 WorldMap::get_input()
 296 {
 297   enter_level = false;
 298   input_direction = NONE;
 299
 300   SDL_Event event;
 301   while (SDL_PollEvent(&event))
 302     {
 303       if(show_menu)
 304         {
 305           current_menu->event(event);
 306         }
 307       else
 308         {
 309           switch(event.type)
 310             {
 311             case SDL_QUIT:
 312               quit = true;
 313               break;
 314
 315             case SDL_KEYDOWN:
 316               switch(event.key.keysym.sym)
 317                 {
 318                 case SDLK_ESCAPE:
 319                   Menu::set_current(worldmap_menu);
 320                   show_menu = !show_menu;
 321                   break;
 322                 case SDLK_LCTRL:
 323                 case SDLK_RETURN:
 324                   enter_level = true;
 325                   break;
 326                 default:
 327                   break;
 328                 }
 329               break;
 330
 331             case SDL_JOYAXISMOTION:
 332               switch(event.jaxis.axis)
 333                 {
 334                 case JOY_X:
 335                   if (event.jaxis.value < -JOYSTICK_DEAD_ZONE)
 336                     input_direction = WEST;
 337                   else if (event.jaxis.value > JOYSTICK_DEAD_ZONE)
 338                     input_direction = EAST;
 339                   break;
 340                 case JOY_Y:
 341                   if (event.jaxis.value > JOYSTICK_DEAD_ZONE)
 342                     input_direction = SOUTH;
 343                   else if (event.jaxis.value < -JOYSTICK_DEAD_ZONE)
 344                     input_direction = NORTH;
 345                   break;
 346                 }
 347               break;
 348
 349             case SDL_JOYBUTTONDOWN:
 350               if (event.jbutton.button == JOY_B)
 351                 enter_level = true;
 352               break;
 353
 354             default:
 355               break;
 356             }
 357         }
 358     }
 359
 360   if (!show_menu)
 361     {
 362       Uint8 *keystate = SDL_GetKeyState(NULL);
 363
 364       if (keystate[SDLK_LEFT])
 365         input_direction = WEST;
 366       else if (keystate[SDLK_RIGHT])
 367         input_direction = EAST;
 368       else if (keystate[SDLK_UP])
 369         input_direction = NORTH;
 370       else if (keystate[SDLK_DOWN])
 371         input_direction = SOUTH;
 372     }
 373 }
 374
 375 Point
 376 WorldMap::get_next_tile(Point pos, Direction direction)
 377 {
 378   switch(direction)
 379     {
 380     case WEST:
 381       pos.x -= 1;
 382       break;
 383     case EAST:
 384       pos.x += 1;
 385       break;
 386     case NORTH:
 387       pos.y -= 1;
 388       break;
 389     case SOUTH:
 390       pos.y += 1;
 391       break;
 392     case NONE:
 393       break;
 394     }
 395   return pos;
 396 }
 397
 398 bool
 399 WorldMap::path_ok(Direction direction, Point old_pos, Point* new_pos)
 400 {
 401   *new_pos = get_next_tile(old_pos, direction);
 402
 403   if (!(new_pos->x >= 0 && new_pos->x < width
 404         && new_pos->y >= 0 && new_pos->y < height))
 405     { // New position is outsite the tilemap
 406       return false;
 407     }
 408   else
 409     { // Check if we the tile allows us to go to new_pos
 410       switch(direction)
 411         {
 412         case WEST:
 413           return (at(old_pos)->west && at(*new_pos)->east);
 414
 415         case EAST:
 416           return (at(old_pos)->east && at(*new_pos)->west);
 417
 418         case NORTH:
 419           return (at(old_pos)->north && at(*new_pos)->south);
 420
 421         case SOUTH:
 422           return (at(old_pos)->south && at(*new_pos)->north);
 423
 424         case NONE:
 425           assert(!"path_ok() can't work if direction is NONE");
 426         }
 427       return false;
 428     }
 429 }
 430
 431 void
 432 WorldMap::update()
 433 {
 434   if (enter_level && !tux->is_moving())
 435     {
 436       for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 437         {
 438           if (i->x == tux->get_tile_pos().x &&
 439               i->y == tux->get_tile_pos().y)
 440             {
 441               std::cout << "Enter the current level: " << i->name << std::endl;;
 442               halt_music();
 443               GameSession session(datadir +  "levels/" + i->name,
 444                                   1, ST_GL_LOAD_LEVEL_FILE);
 445               session.run();
 446
 447               if (1) // FIXME: insert exit status checker here
 448                 i->solved = true;
 449
 450               play_music(song, 1);
 451               show_menu = 0;
 452               menu_reset();
 453               if (!savegame_file.empty())
 454                 savegame(savegame_file);
 455               return;
 456             }
 457         }
 458       std::cout << "Nothing to enter at: "
 459                 << tux->get_tile_pos().x << ", " << tux->get_tile_pos().y << std::endl;
 460     }
 461   else
 462     {
 463       tux->set_direction(input_direction);
 464       tux->update(0.33f);
 465     }
 466
 467   if(show_menu)
 468     {
 469       if(current_menu == worldmap_menu)
 470         {
 471           switch (worldmap_menu->check())
 472             {
 473             case 2: // Return to game
 474               menu_reset();
 475               break;
 476             case 5: // Quit Worldmap
 477               quit = true;
 478               break;
 479             }
 480         }
 481     }
 482 }
 483
 484 Tile*
 485 WorldMap::at(Point p)
 486 {
 487   assert(p.x >= 0
 488          && p.x < width
 489          && p.y >= 0
 490          && p.y < height);
 491   return TileManager::instance()->get(tilemap[width * p.y + p.x]);
 492 }
 493
 494 void
 495 WorldMap::draw(const Point& offset)
 496 {
 497   for(int y = 0; y < height; ++y)
 498     for(int x = 0; x < width; ++x)
 499       {
 500         Tile* tile = at(Point(x, y));
 501         tile->sprite->draw(x*32 + offset.x,
 502                            y*32 + offset.y);
 503       }
 504
 505   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 506     {
 507       leveldot_green->draw(i->x*32 + offset.x,
 508                            i->y*32 + offset.y);
 509     }
 510
 511   tux->draw(offset);
 512   draw_status();
 513 }
 514
 515 void
 516 WorldMap::draw_status()
 517 {
 518   char str[80];
 519   sprintf(str, "%d", player_status.score);
 520   white_text->draw("SCORE", 0, 0);
 521   gold_text->draw(str, 96, 0);
 522
 523   sprintf(str, "%d", player_status.distros);
 524   white_text->draw_align("COINS", 320-64, 0,  A_LEFT, A_TOP);
 525   gold_text->draw_align(str, 320+64, 0, A_RIGHT, A_TOP);
 526
 527   white_text->draw("LIVES", 480, 0);
 528   if (player_status.lives >= 5)
 529     {
 530       sprintf(str, "%dx", player_status.lives);
 531       gold_text->draw(str, 585, 0);
 532       tux_life->draw(565+(18*3), 0);
 533     }
 534   else
 535     {
 536       for(int i= 0; i < player_status.lives; ++i)
 537         tux_life->draw(565+(18*i),0);
 538     }
 539
 540   if (!tux->is_moving())
 541     {
 542       for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 543         {
 544           if (i->x == tux->get_tile_pos().x &&
 545               i->y == tux->get_tile_pos().y)
 546             {
 547               white_text->draw_align(i->name.c_str(), screen->w/2, screen->h,  A_HMIDDLE, A_BOTTOM);
 548               break;
 549             }
 550         }
 551     }
 552 }
 553
 554 void
 555 WorldMap::display()
 556 {
 557   show_menu = 0;
 558   menu_reset();
 559
 560   quit = false;
 561
 562   song = load_song(datadir +  "/music/" + music);
 563   play_music(song, 1);
 564
 565   while(!quit) {
 566     Point tux_pos = tux->get_pos();
 567     if (1)
 568       {
 569         offset.x = -tux_pos.x + screen->w/2;
 570         offset.y = -tux_pos.y + screen->h/2;
 571
 572         if (offset.x > 0) offset.x = 0;
 573         if (offset.y > 0) offset.y = 0;
 574
 575         if (offset.x < screen->w - width*32) offset.x = screen->w - width*32;
 576         if (offset.y < screen->h - height*32) offset.y = screen->h - height*32;
 577       }
 578
 579     draw(offset);
 580     get_input();
 581     update();
 582
 583     menu_process_current();
 584     flipscreen();
 585
 586     SDL_Delay(20);
 587   }
 588
 589   free_music(song);
 590 }
 591
 592 void
 593 WorldMap::savegame(const std::string& filename)
 594 {
 595   std::cout << "savegame: " << filename << std::endl;
 596   std::ofstream out(filename.c_str());
 597
 598   int nb_solved_levels = 0;
 599   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 600     {
 601       if (i->solved)
 602         ++nb_solved_levels;
 603     }
 604
 605   out << "(supertux-savegame\n"
 606       << "  (version 1)\n"
 607       << "  (title  \"Icyisland - " << nb_solved_levels << "/" << levels.size() << "\")\n"
 608       << "  (lives   " << player_status.lives << ")\n"
 609       << "  (score   " << player_status.score << ")\n"
 610       << "  (distros " << player_status.distros << ")\n"
 611       << "  (tux     (x " << tux->get_tile_pos().x << ") (y " << tux->get_tile_pos().y << "))\n"
 612       << "  (levels\n";
 613
 614   for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 615     {
 616       if (i->solved)
 617         {
 618           out << "     (level (name \"" << i->name << "\")\n"
 619               << "            (solved #t))\n";
 620         }
 621     }
 622
 623   out << "   )\n"
 624       << " )\n\n;; EOF ;;" << std::endl;
 625 }
 626
 627 void
 628 WorldMap::loadgame(const std::string& filename)
 629 {
 630   std::cout << "loadgame: " << filename << std::endl;
 631   savegame_file = filename;
 632
 633   if (access(filename.c_str(), F_OK) == 0)
 634     {
 635       lisp_object_t* cur = lisp_read_from_file(filename);
 636
 637       if (strcmp(lisp_symbol(lisp_car(cur)), "supertux-savegame") != 0)
 638         return;
 639
 640       cur = lisp_cdr(cur);
 641       LispReader reader(cur);
 642
 643       reader.read_int("lives",  &player_status.lives);
 644       reader.read_int("score",  &player_status.score);
 645       reader.read_int("distros", &player_status.distros);
 646
 647       lisp_object_t* tux_cur = 0;
 648       if (reader.read_lisp("tux", &tux_cur))
 649         {
 650           Point p;
 651           LispReader tux_reader(tux_cur);
 652           tux_reader.read_int("x", &p.x);
 653           tux_reader.read_int("y", &p.y);
 654
 655           tux->set_tile_pos(p);
 656         }
 657
 658       lisp_object_t* level_cur = 0;
 659       if (reader.read_lisp("levels", &level_cur))
 660         {
 661           while(level_cur)
 662             {
 663               std::string name;
 664               bool solved = false;
 665               LispReader level_reader(level_cur);
 666               level_reader.read_string("name",   &name);
 667               level_reader.read_bool("solved", &solved);
 668
 669               for(Levels::iterator i = levels.begin(); i != levels.end(); ++i)
 670                 {
 671                   if (name == i->name)
 672                     i->solved = solved;
 673                 }
 674
 675               level_cur = lisp_cdr(level_cur);
 676             }
 677         }
 678     }
 679 }
 680
 681 } // namespace WorldMapNS
 682
 683 /* EOF */