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   float scroll_x =
  99     World::current()->displaymanager.get_viewport().get_translation().x;
 100   float scroll_y =
 101     World::current()->displaymanager.get_viewport().get_translation().y;
 102   if (base.x < scroll_x ||
 103       base.x > scroll_x + screen->w ||
 104       base.y < scroll_y ||
 105       base.y > scroll_y + screen->h ||
 106       issolid(base.x + 4, base.y + 2) ||
 107       issolid(base.x, base.y + 2) ||
 108       life_count <= 0)
 109     {
 110       remove_me();
 111     }
 112 }
 113
 114 void
 115 Bullet::draw(ViewPort& viewport, int )
 116 {
 117   if(kind == FIRE_BULLET)
 118     img_firebullet->draw(viewport.world2screen(Vector(base.x, base.y)));
 119   else if(kind == ICE_BULLET)
 120     img_icebullet->draw(viewport.world2screen(Vector(base.x, base.y)));
 121 }
 122
 123 void
 124 Bullet::collision(const MovingObject& , int)
 125 {
 126   // later
 127 }
 128
 129 void
 130 Bullet::collision(int c_object)
 131 {
 132   if(c_object == CO_BADGUY) {
 133     remove_me();
 134   }
 135 }
 136
 137 //---------------------------------------------------------------------------
 138
 139 Upgrade::Upgrade(DisplayManager& display_manager, const Vector& pos,
 140     Direction dir_, UpgradeKind kind_)
 141 {
 142   display_manager.add_drawable(this, LAYER_OBJECTS);
 143
 144   kind = kind_;
 145   dir = dir_;
 146
 147   base.width = 32;
 148   base.height = 0;
 149   base.x = pos.x;
 150   base.y = pos.y;
 151   old_base = base;
 152
 153   physic.reset();
 154   physic.enable_gravity(false);
 155
 156   if(kind == UPGRADE_1UP || kind == UPGRADE_HERRING) {
 157     physic.set_velocity(dir == LEFT ? -1 : 1, 4);
 158     physic.enable_gravity(true);
 159     base.height = 32;
 160   } else if (kind == UPGRADE_ICEFLOWER || kind == UPGRADE_FIREFLOWER) {
 161     // nothing
 162   } else if (kind == UPGRADE_GROWUP) {
 163     physic.set_velocity(dir == LEFT ? -GROWUP_SPEED : GROWUP_SPEED, 0);
 164   } else {
 165     physic.set_velocity(dir == LEFT ? -2 : 2, 0);
 166   }
 167 }
 168
 169 Upgrade::~Upgrade()
 170 {
 171 }
 172
 173 void
 174 Upgrade::action(float elapsed_time)
 175 {
 176   if (kind == UPGRADE_ICEFLOWER || kind == UPGRADE_FIREFLOWER
 177       || kind == UPGRADE_GROWUP) {
 178     if (base.height < 32) {
 179       /* Rise up! */
 180       base.height = base.height + 0.7 * elapsed_time;
 181       if(base.height > 32)
 182         base.height = 32;
 183
 184       return;
 185     }
 186   }
 187
 188   /* Away from the screen? Kill it! */
 189   float scroll_x =
 190     World::current()->displaymanager.get_viewport().get_translation().x;
 191   float scroll_y =
 192     World::current()->displaymanager.get_viewport().get_translation().y;
 193
 194   if(base.x < scroll_x - X_OFFSCREEN_DISTANCE ||
 195       base.x > scroll_x + screen->w + X_OFFSCREEN_DISTANCE ||
 196       base.y < scroll_y - Y_OFFSCREEN_DISTANCE ||
 197       base.y > scroll_y + screen->h + Y_OFFSCREEN_DISTANCE)
 198     {
 199     remove_me();
 200     return;
 201     }
 202
 203   /* Move around? */
 204   physic.apply(elapsed_time, base.x, base.y);
 205   if(kind == UPGRADE_GROWUP) {
 206     collision_swept_object_map(&old_base, &base);
 207   }
 208
 209   // fall down?
 210   if(kind == UPGRADE_GROWUP || kind == UPGRADE_HERRING) {
 211     // falling?
 212     if(physic.get_velocity_y() != 0) {
 213       if(issolid(base.x, base.y + base.height)) {
 214         base.y = int(base.y / 32) * 32;
 215         old_base = base;
 216         if(kind == UPGRADE_GROWUP) {
 217           physic.enable_gravity(false);
 218           physic.set_velocity(dir == LEFT ? -GROWUP_SPEED : GROWUP_SPEED, 0);
 219         } else if(kind == UPGRADE_HERRING) {
 220           physic.set_velocity(dir == LEFT ? -2 : 2, 3);
 221         }
 222       }
 223     } else {
 224       if((physic.get_velocity_x() < 0
 225             && !issolid(base.x+base.width, base.y + base.height))
 226         || (physic.get_velocity_x() > 0
 227             && !issolid(base.x, base.y + base.height))) {
 228         physic.enable_gravity(true);
 229       }
 230     }
 231   }
 232
 233   // horizontal bounce?
 234   if(kind == UPGRADE_GROWUP || kind == UPGRADE_HERRING) {
 235     if (  (physic.get_velocity_x() < 0
 236           && issolid(base.x, (int) base.y + base.height/2))
 237         ||  (physic.get_velocity_x() > 0
 238           && issolid(base.x + base.width, (int) base.y + base.height/2))) {
 239         physic.set_velocity(-physic.get_velocity_x(),physic.get_velocity_y());
 240         dir = dir == LEFT ? RIGHT : LEFT;
 241     }
 242   }
 243 }
 244
 245 void
 246 Upgrade::draw(ViewPort& viewport, int)
 247 {
 248   SDL_Rect dest;
 249
 250   if (base.height < 32)
 251     {
 252       /* Rising up... */
 253
 254       dest.x = (int)(base.x - viewport.get_translation().x);
 255       dest.y = (int)(base.y + 32 - base.height - viewport.get_translation().y);
 256       dest.w = 32;
 257       dest.h = (int)base.height;
 258
 259       if (kind == UPGRADE_GROWUP)
 260         img_growup->draw_part(0,0,dest.x,dest.y,dest.w,dest.h);
 261       else if (kind == UPGRADE_ICEFLOWER)
 262         img_iceflower->draw_part(0,0,dest.x,dest.y,dest.w,dest.h);
 263       else if (kind == UPGRADE_FIREFLOWER)
 264         img_fireflower->draw_part(0,0,dest.x,dest.y,dest.w,dest.h);
 265       else if (kind == UPGRADE_HERRING)
 266         img_star->draw_part(0,0,dest.x,dest.y,dest.w,dest.h);
 267       else if (kind == UPGRADE_1UP)
 268         img_1up->draw_part( 0, 0, dest.x, dest.y, dest.w, dest.h);
 269     }
 270   else
 271     {
 272       if (kind == UPGRADE_GROWUP)
 273         {
 274           img_growup->draw(viewport.world2screen(Vector(base.x, base.y)));
 275         }
 276       else if (kind == UPGRADE_ICEFLOWER)
 277         {
 278           img_iceflower->draw(viewport.world2screen(Vector(base.x, base.y)));
 279         }
 280       else if (kind == UPGRADE_FIREFLOWER)
 281         {
 282           img_fireflower->draw(viewport.world2screen(Vector(base.x, base.y)));
 283         }
 284       else if (kind == UPGRADE_HERRING)
 285         {
 286           img_star->draw(viewport.world2screen(Vector(base.x, base.y)));
 287         }
 288       else if (kind == UPGRADE_1UP)
 289         {
 290           img_1up->draw(viewport.world2screen(Vector(base.x, base.y)));
 291         }
 292     }
 293 }
 294
 295 void
 296 Upgrade::bump(Player* player)
 297 {
 298   // these can't be bumped
 299   if(kind != UPGRADE_GROWUP)
 300     return;
 301
 302   play_sound(sounds[SND_BUMP_UPGRADE], SOUND_CENTER_SPEAKER);
 303
 304   // determine new direction
 305   if (player->base.x + player->base.width/2 > base.x + base.width/2)
 306     dir = LEFT;
 307   else
 308     dir = RIGHT;
 309
 310   // do a little jump and change direction
 311   physic.set_velocity(-physic.get_velocity_x(), 3);
 312   physic.enable_gravity(true);
 313 }
 314
 315 void
 316 Upgrade::collision(const MovingObject& , int)
 317 {
 318   // later
 319 }
 320
 321 void
 322 Upgrade::collision(void* p_c_object, int c_object, CollisionType type)
 323 {
 324   Player* pplayer = NULL;
 325
 326   if(type == COLLISION_BUMP) {
 327     if(c_object == CO_PLAYER)
 328       pplayer = (Player*) p_c_object;
 329     bump(pplayer);
 330     return;
 331   }
 332
 333   switch (c_object)
 334     {
 335     case CO_PLAYER:
 336       /* Remove the upgrade: */
 337
 338       /* p_c_object is CO_PLAYER, so assign it to pplayer */
 339       pplayer = (Player*) p_c_object;
 340
 341       /* Affect the player: */
 342
 343       if (kind == UPGRADE_GROWUP)
 344         {
 345           play_sound(sounds[SND_EXCELLENT], SOUND_CENTER_SPEAKER);
 346           pplayer->grow();
 347         }
 348       else if (kind == UPGRADE_FIREFLOWER)
 349         {
 350           play_sound(sounds[SND_COFFEE], SOUND_CENTER_SPEAKER);
 351           pplayer->grow();
 352           pplayer->got_power = pplayer->FIRE_POWER;
 353         }
 354       else if (kind == UPGRADE_ICEFLOWER)
 355         {
 356           play_sound(sounds[SND_COFFEE], SOUND_CENTER_SPEAKER);
 357           pplayer->grow();
 358           pplayer->got_power = pplayer->ICE_POWER;
 359         }
 360       else if (kind == UPGRADE_FIREFLOWER)
 361         {
 362           play_sound(sounds[SND_COFFEE], SOUND_CENTER_SPEAKER);
 363           pplayer->grow();
 364           pplayer->got_power = pplayer->FIRE_POWER;
 365         }
 366       else if (kind == UPGRADE_HERRING)
 367         {
 368           play_sound(sounds[SND_HERRING], SOUND_CENTER_SPEAKER);
 369           pplayer->invincible_timer.start(TUX_INVINCIBLE_TIME);
 370           World::current()->play_music(HERRING_MUSIC);
 371         }
 372       else if (kind == UPGRADE_1UP)
 373         {
 374           if(player_status.lives < MAX_LIVES) {
 375             player_status.lives++;
 376             play_sound(sounds[SND_LIFEUP], SOUND_CENTER_SPEAKER);
 377           }
 378         }
 379
 380       remove_me();
 381       return;
 382     }
 383 }
 384
 385 void load_special_gfx()
 386 {
 387   img_growup    = sprite_manager->load("egg");
 388   img_iceflower = sprite_manager->load("iceflower");
 389   img_fireflower = sprite_manager->load("fireflower");
 390   img_star      = sprite_manager->load("star");
 391   img_1up       = sprite_manager->load("1up");
 392
 393   img_firebullet    = sprite_manager->load("firebullet");
 394   img_icebullet    = sprite_manager->load("icebullet");
 395 }
 396
 397 void free_special_gfx()
 398 {
 399 }
 400