src/world.cpp

   1 //
   2 // C Implementation: world
   3 //
   4 // Description:
   5 //
   6 //
   7 // Author: Tobias Glaesser <tobi.web@gmx.de>, (C) 2004
   8 //
   9 // Copyright: See COPYING file that comes with this distribution
  10 //
  11 //
  12
  13 #include <math.h>
  14 #include <stdlib.h>
  15 #include <string.h>
  16 #include "globals.h"
  17 #include "scene.h"
  18 #include "screen.h"
  19 #include "defines.h"
  20 #include "world.h"
  21 #include "level.h"
  22 #include "tile.h"
  23
  24 texture_type img_distro[4];
  25
  26 World world;
  27
  28 World::World()
  29 {
  30   level = new Level;
  31 }
  32
  33 World::~World()
  34 {
  35   delete level;
  36 }
  37
  38 int
  39 World::load(const char* subset, int level_nr)
  40 {
  41   return level->load(subset, level_nr);
  42 }
  43
  44 int
  45 World::load(const std::string& filename)
  46 {
  47   return level->load(filename);
  48 }
  49
  50 void
  51 World::arrays_free(void)
  52 {
  53   bad_guys.clear();
  54   bouncy_distros.clear();
  55   broken_bricks.clear();
  56   bouncy_bricks.clear();
  57   floating_scores.clear();
  58   upgrades.clear();
  59   bullets.clear();
  60   std::vector<ParticleSystem*>::iterator i;
  61   for(i = particle_systems.begin(); i != particle_systems.end(); ++i) {
  62     delete *i;
  63   }
  64   particle_systems.clear();
  65 }
  66
  67
  68 void
  69 World::activate_particle_systems()
  70 {
  71   if (level->particle_system == "clouds")
  72     {
  73       particle_systems.push_back(new CloudParticleSystem);
  74     }
  75   else if (level->particle_system == "snow")
  76     {
  77       particle_systems.push_back(new SnowParticleSystem);
  78     }
  79   else if (level->particle_system != "")
  80     {
  81       st_abort("unknown particle system specified in level", "");
  82     }
  83 }
  84
  85 void
  86 World::draw()
  87 {
  88   int y,x;
  89
  90   /* Draw screen: */
  91   if(timer_check(&super_bkgd_timer))
  92     texture_draw(&img_super_bkgd, 0, 0);
  93   else
  94     {
  95       /* Draw the real background */
  96       if(get_level()->bkgd_image[0] != '\0')
  97         {
  98           int s = (int)scroll_x / 30;
  99           texture_draw_part(&level->img_bkgd, s, 0,0,0,level->img_bkgd.w - s, level->img_bkgd.h);
 100           texture_draw_part(&level->img_bkgd, 0, 0,screen->w - s ,0,s,level->img_bkgd.h);
 101         }
 102       else
 103         {
 104           clearscreen(level->bkgd_red, level->bkgd_green, level->bkgd_blue);
 105         }
 106     }
 107
 108   /* Draw particle systems (background) */
 109   std::vector<ParticleSystem*>::iterator p;
 110   for(p = particle_systems.begin(); p != particle_systems.end(); ++p)
 111     {
 112       (*p)->draw(scroll_x, 0, 0);
 113     }
 114
 115   /* Draw background: */
 116   for (y = 0; y < 15; ++y)
 117     {
 118       for (x = 0; x < 21; ++x)
 119         {
 120           drawshape(32*x - fmodf(scroll_x, 32), y * 32,
 121                     level->bg_tiles[(int)y][(int)x + (int)(scroll_x / 32)]);
 122         }
 123     }
 124
 125   /* Draw interactive tiles: */
 126   for (y = 0; y < 15; ++y)
 127     {
 128       for (x = 0; x < 21; ++x)
 129         {
 130           drawshape(32*x - fmodf(scroll_x, 32), y * 32,
 131                     level->ia_tiles[(int)y][(int)x + (int)(scroll_x / 32)]);
 132         }
 133     }
 134
 135   /* (Bouncy bricks): */
 136   for (unsigned int i = 0; i < bouncy_bricks.size(); ++i)
 137     bouncy_brick_draw(&bouncy_bricks[i]);
 138
 139   for (unsigned int i = 0; i < bad_guys.size(); ++i)
 140     bad_guys[i].draw();
 141
 142   tux.draw();
 143
 144   for (unsigned int i = 0; i < bullets.size(); ++i)
 145     bullet_draw(&bullets[i]);
 146
 147   for (unsigned int i = 0; i < floating_scores.size(); ++i)
 148     floating_score_draw(&floating_scores[i]);
 149
 150   for (unsigned int i = 0; i < upgrades.size(); ++i)
 151     upgrade_draw(&upgrades[i]);
 152
 153   for (unsigned int i = 0; i < bouncy_distros.size(); ++i)
 154     bouncy_distro_draw(&bouncy_distros[i]);
 155
 156   for (unsigned int i = 0; i < broken_bricks.size(); ++i)
 157     broken_brick_draw(&broken_bricks[i]);
 158
 159   /* Draw foreground: */
 160   for (y = 0; y < 15; ++y)
 161     {
 162       for (x = 0; x < 21; ++x)
 163         {
 164           drawshape(32*x - fmodf(scroll_x, 32), y * 32,
 165                     level->fg_tiles[(int)y][(int)x + (int)(scroll_x / 32)]);
 166         }
 167     }
 168
 169   /* Draw particle systems (foreground) */
 170   for(p = particle_systems.begin(); p != particle_systems.end(); ++p)
 171     {
 172       (*p)->draw(scroll_x, 0, 1);
 173     }
 174 }
 175
 176 void
 177 World::action()
 178 {
 179   /* Handle bouncy distros: */
 180   for (unsigned int i = 0; i < bouncy_distros.size(); i++)
 181     bouncy_distro_action(&bouncy_distros[i]);
 182
 183   /* Handle broken bricks: */
 184   for (unsigned int i = 0; i < broken_bricks.size(); i++)
 185     broken_brick_action(&broken_bricks[i]);
 186
 187   /* Handle distro counting: */
 188   if (counting_distros)
 189     {
 190       distro_counter--;
 191
 192       if (distro_counter <= 0)
 193         counting_distros = -1;
 194     }
 195
 196   // Handle all kinds of game objects
 197   for (unsigned int i = 0; i < bouncy_bricks.size(); i++)
 198     bouncy_brick_action(&bouncy_bricks[i]);
 199
 200   for (unsigned int i = 0; i < floating_scores.size(); i++)
 201     floating_score_action(&floating_scores[i]);
 202
 203   for (unsigned int i = 0; i < bullets.size(); ++i)
 204     bullet_action(&bullets[i]);
 205
 206   for (unsigned int i = 0; i < upgrades.size(); i++)
 207     upgrade_action(&upgrades[i]);
 208
 209   for (unsigned int i = 0; i < bad_guys.size(); i++)
 210     bad_guys[i].action();
 211 }
 212
 213 void
 214 World::add_score(float x, float y, int s)
 215 {
 216   score += s;
 217
 218   floating_score_type new_floating_score;
 219   floating_score_init(&new_floating_score,x,y,s);
 220   floating_scores.push_back(new_floating_score);
 221 }
 222
 223 void
 224 World::add_bouncy_distro(float x, float y)
 225 {
 226   bouncy_distro_type new_bouncy_distro;
 227   bouncy_distro_init(&new_bouncy_distro,x,y);
 228   bouncy_distros.push_back(new_bouncy_distro);
 229 }
 230
 231 void
 232 World::add_broken_brick(Tile* tile, float x, float y)
 233 {
 234   add_broken_brick_piece(tile, x, y, -1, -4);
 235   add_broken_brick_piece(tile, x, y + 16, -1.5, -3);
 236
 237   add_broken_brick_piece(tile, x + 16, y, 1, -4);
 238   add_broken_brick_piece(tile, x + 16, y + 16, 1.5, -3);
 239 }
 240
 241 void
 242 World::add_broken_brick_piece(Tile* tile, float x, float y, float xm, float ym)
 243 {
 244   broken_brick_type new_broken_brick;
 245   broken_brick_init(&new_broken_brick, tile, x, y, xm, ym);
 246   broken_bricks.push_back(new_broken_brick);
 247 }
 248
 249 void
 250 World::add_bouncy_brick(float x, float y)
 251 {
 252   bouncy_brick_type new_bouncy_brick;
 253   bouncy_brick_init(&new_bouncy_brick,x,y);
 254   bouncy_bricks.push_back(new_bouncy_brick);
 255 }
 256
 257 void
 258 World::add_bad_guy(float x, float y, BadGuyKind kind)
 259 {
 260   bad_guys.push_back(BadGuy());
 261   BadGuy& new_bad_guy = bad_guys.back();
 262
 263   new_bad_guy.init(x,y,kind);
 264 }
 265
 266 void
 267 World::add_upgrade(float x, float y, int dir, int kind)
 268 {
 269   upgrade_type new_upgrade;
 270   upgrade_init(&new_upgrade,x,y,dir,kind);
 271   upgrades.push_back(new_upgrade);
 272 }
 273
 274 void
 275 World::add_bullet(float x, float y, float xm, int dir)
 276 {
 277   bullet_type new_bullet;
 278   bullet_init(&new_bullet,x,y,xm,dir);
 279   bullets.push_back(new_bullet);
 280
 281   play_sound(sounds[SND_SHOOT], SOUND_CENTER_SPEAKER);
 282 }
 283
 284
 285
 286 void bouncy_distro_init(bouncy_distro_type* pbouncy_distro, float x, float y)
 287 {
 288   pbouncy_distro->base.x = x;
 289   pbouncy_distro->base.y = y;
 290   pbouncy_distro->base.ym = -2;
 291 }
 292
 293 void bouncy_distro_action(bouncy_distro_type* pbouncy_distro)
 294 {
 295   pbouncy_distro->base.y = pbouncy_distro->base.y + pbouncy_distro->base.ym * frame_ratio;
 296
 297   pbouncy_distro->base.ym += 0.1 * frame_ratio;
 298
 299   if (pbouncy_distro->base.ym >= 0)
 300     world.bouncy_distros.erase(static_cast<std::vector<bouncy_distro_type>::iterator>(pbouncy_distro));
 301 }
 302
 303 void bouncy_distro_draw(bouncy_distro_type* pbouncy_distro)
 304 {
 305   texture_draw(&img_distro[0],
 306                pbouncy_distro->base.x - scroll_x,
 307                pbouncy_distro->base.y);
 308 }
 309
 310 void broken_brick_init(broken_brick_type* pbroken_brick, Tile* tile,
 311                        float x, float y, float xm, float ym)
 312 {
 313   pbroken_brick->tile   = tile;
 314   pbroken_brick->base.x = x;
 315   pbroken_brick->base.y = y;
 316   pbroken_brick->base.xm = xm;
 317   pbroken_brick->base.ym = ym;
 318
 319   timer_init(&pbroken_brick->timer, true);
 320   timer_start(&pbroken_brick->timer,200);
 321 }
 322
 323 void broken_brick_action(broken_brick_type* pbroken_brick)
 324 {
 325   pbroken_brick->base.x = pbroken_brick->base.x + pbroken_brick->base.xm * frame_ratio;
 326   pbroken_brick->base.y = pbroken_brick->base.y + pbroken_brick->base.ym * frame_ratio;
 327
 328   if (!timer_check(&pbroken_brick->timer))
 329     world.broken_bricks.erase(static_cast<std::vector<broken_brick_type>::iterator>(pbroken_brick));
 330 }
 331
 332 void broken_brick_draw(broken_brick_type* pbroken_brick)
 333 {
 334   SDL_Rect src, dest;
 335   src.x = rand() % 16;
 336   src.y = rand() % 16;
 337   src.w = 16;
 338   src.h = 16;
 339
 340   dest.x = (int)(pbroken_brick->base.x - scroll_x);
 341   dest.y = (int)pbroken_brick->base.y;
 342   dest.w = 16;
 343   dest.h = 16;
 344
 345   if (pbroken_brick->tile->images.size() > 0)
 346     texture_draw_part(&pbroken_brick->tile->images[0],
 347                       src.x,src.y,dest.x,dest.y,dest.w,dest.h);
 348 }
 349
 350 void bouncy_brick_init(bouncy_brick_type* pbouncy_brick, float x, float y)
 351 {
 352   pbouncy_brick->base.x   = x;
 353   pbouncy_brick->base.y   = y;
 354   pbouncy_brick->offset   = 0;
 355   pbouncy_brick->offset_m = -BOUNCY_BRICK_SPEED;
 356   pbouncy_brick->shape    = GameSession::current()->get_level()->gettileid(x, y);
 357 }
 358
 359 void bouncy_brick_action(bouncy_brick_type* pbouncy_brick)
 360 {
 361
 362   pbouncy_brick->offset = (pbouncy_brick->offset +
 363                            pbouncy_brick->offset_m * frame_ratio);
 364
 365   /* Go back down? */
 366
 367   if (pbouncy_brick->offset < -BOUNCY_BRICK_MAX_OFFSET)
 368     pbouncy_brick->offset_m = BOUNCY_BRICK_SPEED;
 369
 370
 371   /* Stop bouncing? */
 372
 373   if (pbouncy_brick->offset >= 0)
 374     world.bouncy_bricks.erase(static_cast<std::vector<bouncy_brick_type>::iterator>(pbouncy_brick));
 375 }
 376
 377 void bouncy_brick_draw(bouncy_brick_type* pbouncy_brick)
 378 {
 379   int s;
 380   SDL_Rect dest;
 381
 382   if (pbouncy_brick->base.x >= scroll_x - 32 &&
 383       pbouncy_brick->base.x <= scroll_x + screen->w)
 384     {
 385       dest.x = (int)(pbouncy_brick->base.x - scroll_x);
 386       dest.y = (int)pbouncy_brick->base.y;
 387       dest.w = 32;
 388       dest.h = 32;
 389
 390       Level* plevel = GameSession::current()->get_level();
 391
 392       // FIXME: overdrawing hack to clean the tile from the screen to
 393       // paint it later at on offseted position
 394       if(plevel->bkgd_image[0] == '\0')
 395         {
 396           fillrect(pbouncy_brick->base.x - scroll_x, pbouncy_brick->base.y,
 397                    32,32,
 398                    plevel->bkgd_red, plevel->bkgd_green, plevel->bkgd_blue, 0);
 399         }
 400       else
 401         {
 402           s = (int)scroll_x / 30;
 403           texture_draw_part(&plevel->img_bkgd, dest.x + s, dest.y,
 404                             dest.x, dest.y,dest.w,dest.h);
 405         }
 406
 407       drawshape(pbouncy_brick->base.x - scroll_x,
 408                 pbouncy_brick->base.y + pbouncy_brick->offset,
 409                 pbouncy_brick->shape);
 410     }
 411 }
 412
 413 void floating_score_init(floating_score_type* pfloating_score, float x, float y, int s)
 414 {
 415   pfloating_score->base.x = x;
 416   pfloating_score->base.y = y - 16;
 417   timer_init(&pfloating_score->timer,true);
 418   timer_start(&pfloating_score->timer,1000);
 419   pfloating_score->value = s;
 420 }
 421
 422 void floating_score_action(floating_score_type* pfloating_score)
 423 {
 424   pfloating_score->base.y = pfloating_score->base.y - 2 * frame_ratio;
 425
 426   if(!timer_check(&pfloating_score->timer))
 427     world.floating_scores.erase(static_cast<std::vector<floating_score_type>::iterator>(pfloating_score));
 428 }
 429
 430 void floating_score_draw(floating_score_type* pfloating_score)
 431 {
 432   char str[10];
 433   sprintf(str, "%d", pfloating_score->value);
 434   text_draw(&gold_text, str, (int)pfloating_score->base.x + 16 - strlen(str) * 8, (int)pfloating_score->base.y, 1);
 435 }
 436
 437 /* Break a brick: */
 438 void trybreakbrick(float x, float y, bool small)
 439 {
 440   Level* plevel = GameSession::current()->get_level();
 441
 442   Tile* tile = gettile(x, y);
 443   if (tile->brick)
 444     {
 445       if (tile->data > 0)
 446         {
 447           /* Get a distro from it: */
 448           world.add_bouncy_distro(((int)(x + 1) / 32) * 32,
 449                                   (int)(y / 32) * 32);
 450
 451           if (!counting_distros)
 452             {
 453               counting_distros = true;
 454               distro_counter = 50;
 455             }
 456
 457           if (distro_counter <= 0)
 458             plevel->change(x, y, TM_IA, tile->next_tile);
 459
 460           play_sound(sounds[SND_DISTRO], SOUND_CENTER_SPEAKER);
 461           score = score + SCORE_DISTRO;
 462           distros++;
 463         }
 464       else if (!small)
 465         {
 466           /* Get rid of it: */
 467           plevel->change(x, y, TM_IA, tile->next_tile);
 468
 469           /* Replace it with broken bits: */
 470           world.add_broken_brick(tile,
 471                                  ((int)(x + 1) / 32) * 32,
 472                                  (int)(y / 32) * 32);
 473
 474           /* Get some score: */
 475           play_sound(sounds[SND_BRICK], SOUND_CENTER_SPEAKER);
 476           score = score + SCORE_BRICK;
 477         }
 478     }
 479 }
 480
 481 /* Empty a box: */
 482 void tryemptybox(float x, float y, int col_side)
 483 {
 484   Level* plevel = GameSession::current()->get_level();
 485
 486   Tile* tile = gettile(x,y);
 487   if (!tile->fullbox)
 488     return;
 489
 490   // according to the collision side, set the upgrade direction
 491   if(col_side == LEFT)
 492     col_side = RIGHT;
 493   else
 494     col_side = LEFT;
 495
 496   switch(tile->data)
 497     {
 498     case 1: //'A':      /* Box with a distro! */
 499       world.add_bouncy_distro(((int)(x + 1) / 32) * 32, (int)(y / 32) * 32 - 32);
 500       play_sound(sounds[SND_DISTRO], SOUND_CENTER_SPEAKER);
 501       score = score + SCORE_DISTRO;
 502       distros++;
 503       break;
 504
 505     case 2: // 'B':      /* Add an upgrade! */
 506       if (tux.size == SMALL)     /* Tux is small, add mints! */
 507         world.add_upgrade((int)((x + 1) / 32) * 32, (int)(y / 32) * 32 - 32, col_side, UPGRADE_MINTS);
 508       else     /* Tux is big, add coffee: */
 509         world.add_upgrade((int)((x + 1) / 32) * 32, (int)(y / 32) * 32 - 32, col_side, UPGRADE_COFFEE);
 510       play_sound(sounds[SND_UPGRADE], SOUND_CENTER_SPEAKER);
 511       break;
 512
 513     case 3:// '!':     /* Add a golden herring */
 514       world.add_upgrade((int)((x + 1) / 32) * 32, (int)(y / 32) * 32 - 32, col_side, UPGRADE_HERRING);
 515       break;
 516     default:
 517       break;
 518     }
 519
 520   /* Empty the box: */
 521   plevel->change(x, y, TM_IA, tile->next_tile);
 522 }
 523
 524 /* Try to grab a distro: */
 525 void trygrabdistro(float x, float y, int bounciness)
 526 {
 527   Level* plevel = GameSession::current()->get_level();
 528   Tile* tile = gettile(x, y);
 529   if (tile && tile->distro)
 530     {
 531       plevel->change(x, y, TM_IA, tile->next_tile);
 532       play_sound(sounds[SND_DISTRO], SOUND_CENTER_SPEAKER);
 533
 534       if (bounciness == BOUNCE)
 535         {
 536           world.add_bouncy_distro(((int)(x + 1) / 32) * 32,
 537                                   (int)(y / 32) * 32);
 538         }
 539
 540       score = score + SCORE_DISTRO;
 541       distros++;
 542     }
 543 }
 544
 545 /* Try to bump a bad guy from below: */
 546 void trybumpbadguy(float x, float y)
 547 {
 548   /* Bad guys: */
 549   for (unsigned int i = 0; i < world.bad_guys.size(); i++)
 550     {
 551       if (world.bad_guys[i].base.x >= x - 32 && world.bad_guys[i].base.x <= x + 32 &&
 552           world.bad_guys[i].base.y >= y - 16 && world.bad_guys[i].base.y <= y + 16)
 553         {
 554           world.bad_guys[i].collision(&tux, CO_PLAYER, COLLISION_BUMP);
 555         }
 556     }
 557
 558
 559   /* Upgrades: */
 560   for (unsigned int i = 0; i < world.upgrades.size(); i++)
 561     {
 562       if (world.upgrades[i].base.height == 32 &&
 563           world.upgrades[i].base.x >= x - 32 && world.upgrades[i].base.x <= x + 32 &&
 564           world.upgrades[i].base.y >= y - 16 && world.upgrades[i].base.y <= y + 16)
 565         {
 566           world.upgrades[i].base.xm = -world.upgrades[i].base.xm;
 567           world.upgrades[i].base.ym = -8;
 568           play_sound(sounds[SND_BUMP_UPGRADE], SOUND_CENTER_SPEAKER);
 569         }
 570     }
 571 }
 572
 573 /* EOF */
 574