src/special.cpp

   1 //  $Id$
   2 //
   3 //  SuperTux -  A Jump'n Run
   4 //  Copyright (C) 2003 Tobias Glaesser <tobi.web@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 <assert.h>
  21 #include <iostream>
  22 #include "SDL.h"
  23 #include "defines.h"
  24 #include "special.h"
  25 #include "gameloop.h"
  26 #include "screen.h"
  27 #include "sound.h"
  28 #include "scene.h"
  29 #include "globals.h"
  30 #include "player.h"
  31 #include "sprite_manager.h"
  32 #include "resources.h"
  33
  34 Sprite* img_firebullet;
  35 Sprite* img_icebullet;
  36 Sprite* img_star;
  37 Sprite* img_growup;
  38 Sprite* img_iceflower;
  39 Sprite* img_fireflower;
  40 Sprite* img_1up;
  41
  42 #define GROWUP_SPEED 1.0f
  43
  44 #define BULLET_STARTING_YM 0
  45 #define BULLET_XM 6
  46
  47 Bullet::Bullet(DisplayManager& display_manager, const Vector& pos, float xm,
  48     int dir, int kind_)
  49 {
  50   display_manager.add_drawable(this, LAYER_OBJECTS);
  51
  52   life_count = 3;
  53   base.width = 4;
  54   base.height = 4;
  55
  56   if (dir == RIGHT)
  57     {
  58       base.x = pos.x + 32;
  59       physic.set_velocity_x(BULLET_XM + xm);
  60     }
  61   else
  62     {
  63       base.x = pos.x;
  64       physic.set_velocity_x(-BULLET_XM + xm);
  65     }
  66
  67   base.y = pos.y + base.height/2;
  68   physic.set_velocity_y(-BULLET_STARTING_YM);
  69   old_base = base;
  70   kind = kind_;
  71 }
  72
  73 void
  74 Bullet::action(float elapsed_time)
  75 {
  76   elapsed_time *= 0.5f;
  77
  78   float old_y = base.y;
  79
  80   physic.apply(elapsed_time, base.x, base.y);
  81   collision_swept_object_map(&old_base,&base);
  82
  83   if (issolid(base.x, base.y + 4) || issolid(base.x, base.y))
  84     {
  85       base.y  = old_y;
  86       physic.set_velocity_y(-physic.get_velocity_y());
  87       life_count -= 1;
  88     }
  89
  90   if(kind == FIRE_BULLET)
  91     // @not framerate independant :-/
  92     physic.set_velocity_y(physic.get_velocity_y() - 0.5 * elapsed_time);
  93   if(physic.get_velocity_y() > 9)
  94     physic.set_velocity_y(9);
  95   else if(physic.get_velocity_y() < -9)
  96     physic.set_velocity_y(-9);
  97
  98   if (base.x < scroll_x ||
  99       base.x > scroll_x + screen->w ||
 100       base.y > screen->h ||
 101       issolid(base.x + 4, base.y + 2) ||
 102       issolid(base.x, base.y + 2) ||
 103       life_count <= 0)
 104     {
 105       remove_me();
 106     }
 107 }
 108
 109 void
 110 Bullet::draw(ViewPort& viewport, int )
 111 {
 112   if(kind == FIRE_BULLET)
 113     img_firebullet->draw(viewport.world2screen(Vector(base.x, base.y)));
 114   else if(kind == ICE_BULLET)
 115     img_icebullet->draw(viewport.world2screen(Vector(base.x, base.y)));
 116 }
 117
 118 void
 119 Bullet::collision(const MovingObject& , int)
 120 {
 121   // later
 122 }
 123
 124 void
 125 Bullet::collision(int c_object)
 126 {
 127   if(c_object == CO_BADGUY) {
 128     remove_me();
 129   }
 130 }
 131
 132 //---------------------------------------------------------------------------
 133
 134 Upgrade::Upgrade(DisplayManager& display_manager, const Vector& pos,
 135     Direction dir_, UpgradeKind kind_)
 136 {
 137   display_manager.add_drawable(this, LAYER_OBJECTS);
 138
 139   kind = kind_;
 140   dir = dir_;
 141
 142   base.width = 32;
 143   base.height = 0;
 144   base.x = pos.x;
 145   base.y = pos.y;
 146   old_base = base;
 147
 148   physic.reset();
 149   physic.enable_gravity(false);
 150
 151   if(kind == UPGRADE_1UP || kind == UPGRADE_HERRING) {
 152     physic.set_velocity(dir == LEFT ? -1 : 1, 4);
 153     physic.enable_gravity(true);
 154     base.height = 32;
 155   } else if (kind == UPGRADE_ICEFLOWER || kind == UPGRADE_FIREFLOWER) {
 156     // nothing
 157   } else if (kind == UPGRADE_GROWUP) {
 158     physic.set_velocity(dir == LEFT ? -GROWUP_SPEED : GROWUP_SPEED, 0);
 159   } else {
 160     physic.set_velocity(dir == LEFT ? -2 : 2, 0);
 161   }
 162 }
 163
 164 Upgrade::~Upgrade()
 165 {
 166 }
 167
 168 void
 169 Upgrade::action(float elapsed_time)
 170 {
 171   if (kind == UPGRADE_ICEFLOWER || kind == UPGRADE_FIREFLOWER
 172       || kind == UPGRADE_GROWUP) {
 173     if (base.height < 32) {
 174       /* Rise up! */
 175       base.height = base.height + 0.7 * elapsed_time;
 176       if(base.height > 32)
 177         base.height = 32;
 178
 179       return;
 180     }
 181   }
 182
 183   /* Away from the screen? Kill it! */
 184   if(base.x < scroll_x - OFFSCREEN_DISTANCE) {
 185       remove_me();
 186       return;
 187   }
 188   if(base.y > screen->h) {
 189     remove_me();
 190     return;
 191   }
 192
 193   /* Move around? */
 194   physic.apply(elapsed_time, base.x, base.y);
 195   if(kind == UPGRADE_GROWUP) {
 196     collision_swept_object_map(&old_base, &base);
 197   }
 198
 199   // fall down?
 200   if(kind == UPGRADE_GROWUP || kind == UPGRADE_HERRING) {
 201     // falling?
 202     if(physic.get_velocity_y() != 0) {
 203       if(issolid(base.x, base.y + base.height)) {
 204         base.y = int(base.y / 32) * 32;
 205         old_base = base;
 206         if(kind == UPGRADE_GROWUP) {
 207           physic.enable_gravity(false);
 208           physic.set_velocity(dir == LEFT ? -GROWUP_SPEED : GROWUP_SPEED, 0);
 209         } else if(kind == UPGRADE_HERRING) {
 210           physic.set_velocity(dir == LEFT ? -2 : 2, 3);
 211         }
 212       }
 213     } else {
 214       if((physic.get_velocity_x() < 0
 215             && !issolid(base.x+base.width, base.y + base.height))
 216         || (physic.get_velocity_x() > 0
 217             && !issolid(base.x, base.y + base.height))) {
 218         physic.enable_gravity(true);
 219       }
 220     }
 221   }
 222
 223   // horizontal bounce?
 224   if(kind == UPGRADE_GROWUP || kind == UPGRADE_HERRING) {
 225     if (  (physic.get_velocity_x() < 0
 226           && issolid(base.x, (int) base.y + base.height/2))
 227         ||  (physic.get_velocity_x() > 0
 228           && issolid(base.x + base.width, (int) base.y + base.height/2))) {
 229         physic.set_velocity(-physic.get_velocity_x(),physic.get_velocity_y());
 230         dir = dir == LEFT ? RIGHT : LEFT;
 231     }
 232   }
 233 }
 234
 235 void
 236 Upgrade::draw(ViewPort& viewport, int)
 237 {
 238   SDL_Rect dest;
 239
 240   if (base.height < 32)
 241     {
 242       /* Rising up... */
 243
 244       dest.x = (int)(base.x - viewport.get_translation().x);
 245       dest.y = (int)(base.y + 32 - base.height - viewport.get_translation().y);
 246       dest.w = 32;
 247       dest.h = (int)base.height;
 248
 249       if (kind == UPGRADE_GROWUP)
 250         img_growup->draw_part(0,0,dest.x,dest.y,dest.w,dest.h);
 251       else if (kind == UPGRADE_ICEFLOWER)
 252         img_iceflower->draw_part(0,0,dest.x,dest.y,dest.w,dest.h);
 253       else if (kind == UPGRADE_FIREFLOWER)
 254         img_fireflower->draw_part(0,0,dest.x,dest.y,dest.w,dest.h);
 255       else if (kind == UPGRADE_HERRING)
 256         img_star->draw_part(0,0,dest.x,dest.y,dest.w,dest.h);
 257       else if (kind == UPGRADE_1UP)
 258         img_1up->draw_part( 0, 0, dest.x, dest.y, dest.w, dest.h);
 259     }
 260   else
 261     {
 262       if (kind == UPGRADE_GROWUP)
 263         {
 264           img_growup->draw(viewport.world2screen(Vector(base.x, base.y)));
 265         }
 266       else if (kind == UPGRADE_ICEFLOWER)
 267         {
 268           img_iceflower->draw(viewport.world2screen(Vector(base.x, base.y)));
 269         }
 270       else if (kind == UPGRADE_FIREFLOWER)
 271         {
 272           img_fireflower->draw(viewport.world2screen(Vector(base.x, base.y)));
 273         }
 274       else if (kind == UPGRADE_HERRING)
 275         {
 276           img_star->draw(viewport.world2screen(Vector(base.x, base.y)));
 277         }
 278       else if (kind == UPGRADE_1UP)
 279         {
 280           img_1up->draw(viewport.world2screen(Vector(base.x, base.y)));
 281         }
 282     }
 283 }
 284
 285 void
 286 Upgrade::bump(Player* player)
 287 {
 288   // these can't be bumped
 289   if(kind != UPGRADE_GROWUP)
 290     return;
 291
 292   play_sound(sounds[SND_BUMP_UPGRADE], SOUND_CENTER_SPEAKER);
 293
 294   // determine new direction
 295   if (player->base.x + player->base.width/2 > base.x + base.width/2)
 296     dir = LEFT;
 297   else
 298     dir = RIGHT;
 299
 300   // do a little jump and change direction
 301   physic.set_velocity(-physic.get_velocity_x(), 3);
 302   physic.enable_gravity(true);
 303 }
 304
 305 void
 306 Upgrade::collision(const MovingObject& , int)
 307 {
 308   // later
 309 }
 310
 311 void
 312 Upgrade::collision(void* p_c_object, int c_object, CollisionType type)
 313 {
 314   Player* pplayer = NULL;
 315
 316   if(type == COLLISION_BUMP) {
 317     if(c_object == CO_PLAYER)
 318       pplayer = (Player*) p_c_object;
 319     bump(pplayer);
 320     return;
 321   }
 322
 323   switch (c_object)
 324     {
 325     case CO_PLAYER:
 326       /* Remove the upgrade: */
 327
 328       /* p_c_object is CO_PLAYER, so assign it to pplayer */
 329       pplayer = (Player*) p_c_object;
 330
 331       /* Affect the player: */
 332
 333       if (kind == UPGRADE_GROWUP)
 334         {
 335           play_sound(sounds[SND_EXCELLENT], SOUND_CENTER_SPEAKER);
 336           pplayer->grow();
 337         }
 338       else if (kind == UPGRADE_FIREFLOWER)
 339         {
 340           play_sound(sounds[SND_COFFEE], SOUND_CENTER_SPEAKER);
 341           pplayer->grow();
 342           pplayer->got_power = pplayer->FIRE_POWER;
 343         }
 344       else if (kind == UPGRADE_ICEFLOWER)
 345         {
 346           play_sound(sounds[SND_COFFEE], SOUND_CENTER_SPEAKER);
 347           pplayer->grow();
 348           pplayer->got_power = pplayer->ICE_POWER;
 349         }
 350       else if (kind == UPGRADE_FIREFLOWER)
 351         {
 352           play_sound(sounds[SND_COFFEE], SOUND_CENTER_SPEAKER);
 353           pplayer->grow();
 354           pplayer->got_power = pplayer->FIRE_POWER;
 355         }
 356       else if (kind == UPGRADE_HERRING)
 357         {
 358           play_sound(sounds[SND_HERRING], SOUND_CENTER_SPEAKER);
 359           pplayer->invincible_timer.start(TUX_INVINCIBLE_TIME);
 360           World::current()->play_music(HERRING_MUSIC);
 361         }
 362       else if (kind == UPGRADE_1UP)
 363         {
 364           if(player_status.lives < MAX_LIVES) {
 365             player_status.lives++;
 366             play_sound(sounds[SND_LIFEUP], SOUND_CENTER_SPEAKER);
 367           }
 368         }
 369
 370       remove_me();
 371       return;
 372     }
 373 }
 374
 375 void load_special_gfx()
 376 {
 377   img_growup    = sprite_manager->load("egg");
 378   img_iceflower = sprite_manager->load("iceflower");
 379   img_fireflower = sprite_manager->load("fireflower");
 380   img_star      = sprite_manager->load("star");
 381   img_1up       = sprite_manager->load("1up");
 382
 383   img_firebullet    = sprite_manager->load("firebullet");
 384   img_icebullet    = sprite_manager->load("icebullet");
 385 }
 386
 387 void free_special_gfx()
 388 {
 389 }
 390