src/world.cpp

   1 //  $Id$
   2 //
   3 //  SuperTux
   4 //  Copyright (C) 2000 Bill Kendrick <bill@newbreedsoftware.com>
   5 //  Copyright (C) 2004 Tobias Glaesser <tobi.web@gmx.de>
   6 //  Copyright (C) 2004 Ingo Ruhnke <grumbel@gmx.de>
   7 //
   8 //  This program is free software; you can redistribute it and/or
   9 //  modify it under the terms of the GNU General Public License
  10 //  as published by the Free Software Foundation; either version 2
  11 //  of the License, or (at your option) any later version.
  12 //
  13 //  This program is distributed in the hope that it will be useful,
  14 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 //  GNU General Public License for more details.
  17 //
  18 //  You should have received a copy of the GNU General Public License
  19 //  along with this program; if not, write to the Free Software
  20 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  21 //  02111-1307, USA.
  22
  23 #include <iostream>
  24 #include <math.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include "globals.h"
  28 #include "scene.h"
  29 #include "screen.h"
  30 #include "defines.h"
  31 #include "world.h"
  32 #include "level.h"
  33 #include "tile.h"
  34 #include "resources.h"
  35 #include "gameobjs.h"
  36 #include "camera.h"
  37 #include "display_manager.h"
  38 #include "background.h"
  39 #include "tilemap.h"
  40
  41 Surface* img_distro[4];
  42
  43 World* World::current_ = 0;
  44
  45 World::World(const std::string& filename, int level_nr)
  46   : level(0), tux(0), background(0), camera(0)
  47 {
  48   // FIXME: Move this to action and draw and everywhere else where the
  49   // world calls child functions
  50   current_ = this;
  51
  52   tux = new Player(displaymanager);
  53   add_object(tux);
  54
  55   level = new Level();
  56   camera = new Camera(tux, level);
  57   add_object(camera);
  58
  59   if(level_nr >= 0) {
  60     level->load(filename, level_nr, this);
  61   } else {
  62     level->load(filename, this);
  63   }
  64   tux->move(level->start_pos);
  65
  66   set_defaults();
  67
  68   level->load_gfx();
  69   // add background
  70   activate_particle_systems();
  71   background = new Background(displaymanager);
  72   if(level->img_bkgd) {
  73     background->set_image(level->img_bkgd, level->bkgd_speed);
  74   } else {
  75     background->set_gradient(level->bkgd_top, level->bkgd_bottom);
  76   }
  77   add_object(background);
  78
  79   // add tilemap
  80   add_object(new TileMap(displaymanager, level));
  81   level->load_song();
  82
  83   apply_bonuses();
  84 }
  85
  86 void
  87 World::apply_bonuses()
  88 {
  89   // Apply bonuses from former levels
  90   switch (player_status.bonus)
  91     {
  92     case PlayerStatus::NO_BONUS:
  93       break;
  94
  95     case PlayerStatus::FLOWER_BONUS:
  96       tux->got_power = Player::FIRE_POWER;  // FIXME: add ice power to here
  97       // fall through
  98
  99     case PlayerStatus::GROWUP_BONUS:
 100       tux->grow(false);
 101       break;
 102     }
 103 }
 104
 105 World::~World()
 106 {
 107   for (std::vector<GameObject*>::iterator i = gameobjects.begin();
 108           i != gameobjects.end(); ++i) {
 109     delete *i;
 110   }
 111
 112   delete level;
 113
 114   current_ = 0;
 115 }
 116
 117 void
 118 World::set_defaults()
 119 {
 120   player_status.score_multiplier = 1;
 121
 122   counting_distros = false;
 123   distro_counter = 0;
 124
 125   /* set current song/music */
 126   currentmusic = LEVEL_MUSIC;
 127 }
 128
 129 void
 130 World::add_object(GameObject* object)
 131 {
 132   // XXX hack for now until new collision code is ready
 133   BadGuy* badguy = dynamic_cast<BadGuy*> (object);
 134   if(badguy)
 135     bad_guys.push_back(badguy);
 136   Bullet* bullet = dynamic_cast<Bullet*> (object);
 137   if(bullet)
 138     bullets.push_back(bullet);
 139   Upgrade* upgrade = dynamic_cast<Upgrade*> (object);
 140   if(upgrade)
 141     upgrades.push_back(upgrade);
 142   Trampoline* trampoline = dynamic_cast<Trampoline*> (object);
 143   if(trampoline)
 144     trampolines.push_back(trampoline);
 145   FlyingPlatform* flying_platform = dynamic_cast<FlyingPlatform*> (object);
 146   if(flying_platform)
 147     flying_platforms.push_back(flying_platform);
 148
 149   gameobjects.push_back(object);
 150 }
 151
 152 void
 153 World::parse_objects(lisp_object_t* cur)
 154 {
 155   while(!lisp_nil_p(cur)) {
 156     lisp_object_t* data = lisp_car(cur);
 157     std::string object_type = lisp_symbol(lisp_car(data));
 158
 159     LispReader reader(lisp_cdr(data));
 160
 161     if(object_type == "trampoline") {
 162       add_object(new Trampoline(displaymanager, reader));
 163     }
 164     else if(object_type == "flying-platform") {
 165       add_object(new FlyingPlatform(displaymanager, reader));
 166     }
 167     else {
 168       BadGuyKind kind = badguykind_from_string(object_type);
 169       add_object(new BadGuy(displaymanager, kind, reader));
 170     }
 171
 172     cur = lisp_cdr(cur);
 173   }
 174 }
 175
 176 void
 177 World::activate_particle_systems()
 178 {
 179   if (level->particle_system == "clouds")
 180     {
 181       add_object(new CloudParticleSystem(displaymanager));
 182     }
 183   else if (level->particle_system == "snow")
 184     {
 185       add_object(new SnowParticleSystem(displaymanager));
 186     }
 187   else if (level->particle_system != "")
 188     {
 189       st_abort("unknown particle system specified in level", "");
 190     }
 191 }
 192
 193 void
 194 World::draw()
 195 {
 196   /* Draw objects */
 197   displaymanager.draw(*camera);
 198 }
 199
 200 void
 201 World::action(float elapsed_time)
 202 {
 203   tux->check_bounds(*camera);
 204
 205   /* update objects (don't use iterators here, because the list might change
 206    * during the iteration)
 207    */
 208   for(size_t i = 0; i < gameobjects.size(); ++i)
 209     if(gameobjects[i]->is_valid())
 210       gameobjects[i]->action(elapsed_time);
 211
 212   /* Handle all possible collisions. */
 213   collision_handler();
 214
 215   /** cleanup marked objects */
 216   for(std::vector<GameObject*>::iterator i = gameobjects.begin();
 217       i != gameobjects.end(); /* nothing */) {
 218     if((*i)->is_valid() == false) {
 219       Drawable* drawable = dynamic_cast<Drawable*> (*i);
 220       if(drawable)
 221         displaymanager.remove_drawable(drawable);
 222       BadGuy* badguy = dynamic_cast<BadGuy*> (*i);
 223       if(badguy) {
 224         bad_guys.erase(std::remove(bad_guys.begin(), bad_guys.end(), badguy),
 225             bad_guys.end());
 226       }
 227       Bullet* bullet = dynamic_cast<Bullet*> (*i);
 228       if(bullet) {
 229         bullets.erase(
 230             std::remove(bullets.begin(), bullets.end(), bullet),
 231             bullets.end());
 232       }
 233       Upgrade* upgrade = dynamic_cast<Upgrade*> (*i);
 234       if(upgrade) {
 235         upgrades.erase(
 236             std::remove(upgrades.begin(), upgrades.end(), upgrade),
 237             upgrades.end());
 238       }
 239       Trampoline* trampoline = dynamic_cast<Trampoline*> (*i);
 240       if(trampoline) {
 241         trampolines.erase(
 242             std::remove(trampolines.begin(), trampolines.end(), trampoline),
 243             trampolines.end());
 244       }
 245       FlyingPlatform* flying_platform= dynamic_cast<FlyingPlatform*> (*i);
 246       if(flying_platform) {
 247         flying_platforms.erase(
 248             std::remove(flying_platforms.begin(), flying_platforms.end(), flying_platform),
 249             flying_platforms.end());
 250       }
 251
 252       delete *i;
 253       i = gameobjects.erase(i);
 254     } else {
 255       ++i;
 256     }
 257   }
 258 }
 259
 260 void
 261 World::collision_handler()
 262 {
 263   // CO_BULLET & CO_BADGUY check
 264   for(unsigned int i = 0; i < bullets.size(); ++i)
 265     {
 266       for (BadGuys::iterator j = bad_guys.begin(); j != bad_guys.end(); ++j)
 267         {
 268           if((*j)->dying != DYING_NOT)
 269             continue;
 270
 271           if(rectcollision(bullets[i]->base, (*j)->base))
 272             {
 273               // We have detected a collision and now call the
 274               // collision functions of the collided objects.
 275               (*j)->collision(bullets[i], CO_BULLET, COLLISION_NORMAL);
 276               bullets[i]->collision(CO_BADGUY);
 277               break; // bullet is invalid now, so break
 278             }
 279         }
 280     }
 281
 282   /* CO_BADGUY & CO_BADGUY check */
 283   for (BadGuys::iterator i = bad_guys.begin(); i != bad_guys.end(); ++i)
 284     {
 285       if((*i)->dying != DYING_NOT)
 286         continue;
 287
 288       BadGuys::iterator j = i;
 289       ++j;
 290       for (; j != bad_guys.end(); ++j)
 291         {
 292           if(j == i || (*j)->dying != DYING_NOT)
 293             continue;
 294
 295           if(rectcollision((*i)->base, (*j)->base))
 296             {
 297               // We have detected a collision and now call the
 298               // collision functions of the collided objects.
 299               (*j)->collision(*i, CO_BADGUY);
 300               (*i)->collision(*j, CO_BADGUY);
 301             }
 302         }
 303     }
 304
 305   if(tux->dying != DYING_NOT) return;
 306
 307   // CO_BADGUY & CO_PLAYER check
 308   for (BadGuys::iterator i = bad_guys.begin(); i != bad_guys.end(); ++i)
 309     {
 310       if((*i)->dying != DYING_NOT)
 311         continue;
 312
 313       if(rectcollision_offset((*i)->base, tux->base, 0, 0))
 314         {
 315           // We have detected a collision and now call the collision
 316           // functions of the collided objects.
 317           if (tux->previous_base.y < tux->base.y &&
 318               tux->previous_base.y + tux->previous_base.height
 319               < (*i)->base.y + (*i)->base.height/2
 320               && !tux->invincible_timer.started())
 321             {
 322               (*i)->collision(tux, CO_PLAYER, COLLISION_SQUISH);
 323             }
 324           else
 325             {
 326               tux->collision(*i, CO_BADGUY);
 327               (*i)->collision(tux, CO_PLAYER, COLLISION_NORMAL);
 328             }
 329         }
 330     }
 331
 332   // CO_UPGRADE & CO_PLAYER check
 333   for(unsigned int i = 0; i < upgrades.size(); ++i)
 334     {
 335       if(rectcollision(upgrades[i]->base, tux->base))
 336         {
 337           // We have detected a collision and now call the collision
 338           // functions of the collided objects.
 339           upgrades[i]->collision(tux, CO_PLAYER, COLLISION_NORMAL);
 340         }
 341     }
 342
 343   // CO_TRAMPOLINE & (CO_PLAYER or CO_BADGUY)
 344   for (Trampolines::iterator i = trampolines.begin(); i != trampolines.end(); ++i)
 345   {
 346     if (rectcollision((*i)->base, tux->base))
 347     {
 348       if (tux->previous_base.y < tux->base.y &&
 349           tux->previous_base.y + tux->previous_base.height
 350           < (*i)->base.y + (*i)->base.height/2)
 351       {
 352         (*i)->collision(tux, CO_PLAYER, COLLISION_SQUISH);
 353       }
 354       else if (tux->previous_base.y <= tux->base.y)
 355       {
 356         tux->collision(*i, CO_TRAMPOLINE);
 357         (*i)->collision(tux, CO_PLAYER, COLLISION_NORMAL);
 358       }
 359     }
 360   }
 361
 362   // CO_FLYING_PLATFORM & (CO_PLAYER or CO_BADGUY)
 363   for (FlyingPlatforms::iterator i = flying_platforms.begin(); i != flying_platforms.end(); ++i)
 364   {
 365     if (rectcollision((*i)->base, tux->base))
 366     {
 367       if (tux->previous_base.y < tux->base.y &&
 368           tux->previous_base.y + tux->previous_base.height
 369           < (*i)->base.y + (*i)->base.height/2)
 370       {
 371         (*i)->collision(tux, CO_PLAYER, COLLISION_SQUISH);
 372         tux->collision(*i, CO_FLYING_PLATFORM);
 373       }
 374 /*      else if (tux->previous_base.y <= tux->base.y)
 375       {
 376       }*/
 377     }
 378   }
 379 }
 380
 381 void
 382 World::add_score(const Vector& pos, int s)
 383 {
 384   player_status.score += s;
 385
 386   add_object(new FloatingScore(displaymanager, pos, s));
 387 }
 388
 389 void
 390 World::add_bouncy_distro(const Vector& pos)
 391 {
 392   add_object(new BouncyDistro(displaymanager, pos));
 393 }
 394
 395 void
 396 World::add_broken_brick(const Vector& pos, Tile* tile)
 397 {
 398   add_broken_brick_piece(pos, Vector(-1, -4), tile);
 399   add_broken_brick_piece(pos + Vector(0, 16), Vector(-1.5, -3), tile);
 400
 401   add_broken_brick_piece(pos + Vector(16, 0), Vector(1, -4), tile);
 402   add_broken_brick_piece(pos + Vector(16, 16), Vector(1.5, -3), tile);
 403 }
 404
 405 void
 406 World::add_broken_brick_piece(const Vector& pos, const Vector& movement,
 407     Tile* tile)
 408 {
 409   add_object(new BrokenBrick(displaymanager, tile, pos, movement));
 410 }
 411
 412 void
 413 World::add_bouncy_brick(const Vector& pos)
 414 {
 415   add_object(new BouncyBrick(displaymanager, pos));
 416 }
 417
 418 BadGuy*
 419 World::add_bad_guy(float x, float y, BadGuyKind kind)
 420 {
 421   BadGuy* badguy = new BadGuy(displaymanager, kind, x, y);
 422   add_object(badguy);
 423   return badguy;
 424 }
 425
 426 void
 427 World::add_upgrade(const Vector& pos, Direction dir, UpgradeKind kind)
 428 {
 429   add_object(new Upgrade(displaymanager, pos, dir, kind));
 430 }
 431
 432 bool
 433 World::add_bullet(const Vector& pos, float xm, Direction dir)
 434 {
 435   if(tux->got_power == Player::FIRE_POWER)
 436     {
 437     if(bullets.size() > MAX_FIRE_BULLETS-1)
 438       return false;
 439     }
 440   else if(tux->got_power == Player::ICE_POWER)
 441     {
 442     if(bullets.size() > MAX_ICE_BULLETS-1)
 443       return false;
 444     }
 445
 446   Bullet* new_bullet = 0;
 447   if(tux->got_power == Player::FIRE_POWER)
 448     new_bullet = new Bullet(displaymanager, pos, xm, dir, FIRE_BULLET);
 449   else if(tux->got_power == Player::ICE_POWER)
 450     new_bullet = new Bullet(displaymanager, pos, xm, dir, ICE_BULLET);
 451   else
 452     st_abort("wrong bullet type.", "");
 453   add_object(new_bullet);
 454
 455   play_sound(sounds[SND_SHOOT], SOUND_CENTER_SPEAKER);
 456
 457   return true;
 458 }
 459
 460 void
 461 World::play_music(int musictype)
 462 {
 463   currentmusic = musictype;
 464   switch(currentmusic) {
 465     case HURRYUP_MUSIC:
 466       music_manager->play_music(get_level()->get_level_music_fast());
 467       break;
 468     case LEVEL_MUSIC:
 469       music_manager->play_music(get_level()->get_level_music());
 470       break;
 471     case HERRING_MUSIC:
 472       music_manager->play_music(herring_song);
 473       break;
 474     default:
 475       music_manager->halt_music();
 476       break;
 477   }
 478 }
 479
 480 int
 481 World::get_music_type()
 482 {
 483   return currentmusic;
 484 }
 485
 486 /* Break a brick: */
 487 bool
 488 World::trybreakbrick(float x, float y, bool small)
 489 {
 490   Level* plevel = get_level();
 491
 492   Tile* tile = gettile(x, y);
 493   if (tile->brick)
 494     {
 495       if (tile->data > 0)
 496         {
 497           /* Get a distro from it: */
 498           add_bouncy_distro(
 499               Vector(((int)(x + 1) / 32) * 32, (int)(y / 32) * 32));
 500
 501           // TODO: don't handle this in a global way but per-tile...
 502           if (!counting_distros)
 503             {
 504               counting_distros = true;
 505               distro_counter = 5;
 506             }
 507           else
 508             {
 509               distro_counter--;
 510             }
 511
 512           if (distro_counter <= 0)
 513             {
 514               counting_distros = false;
 515               plevel->change(x, y, TM_IA, tile->next_tile);
 516             }
 517
 518           play_sound(sounds[SND_DISTRO], SOUND_CENTER_SPEAKER);
 519           player_status.score = player_status.score + SCORE_DISTRO;
 520           player_status.distros++;
 521           return true;
 522         }
 523       else if (!small)
 524         {
 525           /* Get rid of it: */
 526           plevel->change(x, y, TM_IA, tile->next_tile);
 527
 528           /* Replace it with broken bits: */
 529           add_broken_brick(Vector(
 530                                  ((int)(x + 1) / 32) * 32,
 531                                  (int)(y / 32) * 32), tile);
 532
 533           /* Get some score: */
 534           play_sound(sounds[SND_BRICK], SOUND_CENTER_SPEAKER);
 535           player_status.score = player_status.score + SCORE_BRICK;
 536
 537           return true;
 538         }
 539     }
 540
 541   return false;
 542 }
 543
 544 /* Empty a box: */
 545 void
 546 World::tryemptybox(float x, float y, Direction col_side)
 547 {
 548   Tile* tile = gettile(x,y);
 549   if (!tile->fullbox)
 550     return;
 551
 552   // according to the collision side, set the upgrade direction
 553   if(col_side == LEFT)
 554     col_side = RIGHT;
 555   else
 556     col_side = LEFT;
 557
 558   int posx = ((int)(x+1) / 32) * 32;
 559   int posy = (int)(y/32) * 32 - 32;
 560   switch(tile->data)
 561     {
 562     case 1: // Box with a distro!
 563       add_bouncy_distro(Vector(posx, posy));
 564       play_sound(sounds[SND_DISTRO], SOUND_CENTER_SPEAKER);
 565       player_status.score = player_status.score + SCORE_DISTRO;
 566       player_status.distros++;
 567       break;
 568
 569     case 2: // Add a fire flower upgrade!
 570       if (tux->size == SMALL)     /* Tux is small, add mints! */
 571         add_upgrade(Vector(posx, posy), col_side, UPGRADE_GROWUP);
 572       else     /* Tux is big, add a fireflower: */
 573         add_upgrade(Vector(posx, posy), col_side, UPGRADE_FIREFLOWER);
 574       play_sound(sounds[SND_UPGRADE], SOUND_CENTER_SPEAKER);
 575       break;
 576
 577     case 5: // Add an ice flower upgrade!
 578       if (tux->size == SMALL)     /* Tux is small, add mints! */
 579         add_upgrade(Vector(posx, posy), col_side, UPGRADE_GROWUP);
 580       else     /* Tux is big, add an iceflower: */
 581         add_upgrade(Vector(posx, posy), col_side, UPGRADE_ICEFLOWER);
 582       play_sound(sounds[SND_UPGRADE], SOUND_CENTER_SPEAKER);
 583       break;
 584
 585     case 3: // Add a golden herring
 586       add_upgrade(Vector(posx, posy), col_side, UPGRADE_HERRING);
 587       break;
 588
 589     case 4: // Add a 1up extra
 590       add_upgrade(Vector(posx, posy), col_side, UPGRADE_1UP);
 591       break;
 592     default:
 593       break;
 594     }
 595
 596   /* Empty the box: */
 597   level->change(x, y, TM_IA, tile->next_tile);
 598 }
 599
 600 /* Try to grab a distro: */
 601 void
 602 World::trygrabdistro(float x, float y, int bounciness)
 603 {
 604   Tile* tile = gettile(x, y);
 605   if (tile && tile->distro)
 606     {
 607       level->change(x, y, TM_IA, tile->next_tile);
 608       play_sound(sounds[SND_DISTRO], SOUND_CENTER_SPEAKER);
 609
 610       if (bounciness == BOUNCE)
 611         {
 612           add_bouncy_distro(Vector(((int)(x + 1) / 32) * 32,
 613                                   (int)(y / 32) * 32));
 614         }
 615
 616       player_status.score = player_status.score + SCORE_DISTRO;
 617       player_status.distros++;
 618     }
 619 }
 620
 621 /* Try to bump a bad guy from below: */
 622 void
 623 World::trybumpbadguy(float x, float y)
 624 {
 625   // Bad guys:
 626   for (BadGuys::iterator i = bad_guys.begin(); i != bad_guys.end(); ++i)
 627     {
 628       if ((*i)->base.x >= x - 32 && (*i)->base.x <= x + 32 &&
 629           (*i)->base.y >= y - 16 && (*i)->base.y <= y + 16)
 630         {
 631           (*i)->collision(tux, CO_PLAYER, COLLISION_BUMP);
 632         }
 633     }
 634
 635   // Upgrades:
 636   for (unsigned int i = 0; i < upgrades.size(); i++)
 637     {
 638       if (upgrades[i]->base.height == 32 &&
 639           upgrades[i]->base.x >= x - 32 && upgrades[i]->base.x <= x + 32 &&
 640           upgrades[i]->base.y >= y - 16 && upgrades[i]->base.y <= y + 16)
 641         {
 642           upgrades[i]->collision(tux, CO_PLAYER, COLLISION_BUMP);
 643         }
 644     }
 645 }
 646
 647 /* EOF */
 648