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