src/special.cpp

   1 //
   2 // C Implementation: special
   3 //
   4 // Description:
   5 //
   6 //
   7 // Author: Tobias Glaesser <tobi.web@gmx.de> & Bill Kendrick, (C) 2004
   8 //
   9 // Copyright: See COPYING file that comes with this distribution
  10 //
  11 //
  12
  13 #include "SDL.h"
  14 #include "defines.h"
  15 #include "special.h"
  16 #include "gameloop.h"
  17 #include "screen.h"
  18 #include "sound.h"
  19 #include "scene.h"
  20 #include "globals.h"
  21 #include "player.h"
  22
  23 texture_type img_bullet;
  24 texture_type img_golden_herring;
  25 bitmask* bm_bullet;
  26
  27 void create_special_bitmasks()
  28 {
  29   bm_bullet = bitmask_create_SDL(img_bullet.sdl_surface);
  30 }
  31
  32 void bullet_init(bullet_type* pbullet, float x, float y, float xm, int dir)
  33 {
  34   pbullet->base.width = 4;
  35   pbullet->base.height = 4;
  36
  37   if (dir == RIGHT)
  38     {
  39       pbullet->base.x = x + 32;
  40       pbullet->base.xm = BULLET_XM + xm;
  41     }
  42   else
  43     {
  44       pbullet->base.x = x;
  45       pbullet->base.xm = -BULLET_XM + xm;
  46     }
  47
  48   pbullet->base.y = y;
  49   pbullet->base.ym = BULLET_STARTING_YM;
  50   pbullet->old_base = pbullet->base;
  51 }
  52
  53 void bullet_action(bullet_type* pbullet)
  54 {
  55       pbullet->base.x = pbullet->base.x + pbullet->base.xm * frame_ratio;
  56       pbullet->base.y = pbullet->base.y + pbullet->base.ym * frame_ratio;
  57
  58       collision_swept_object_map(&pbullet->old_base,&pbullet->base);
  59
  60       if (issolid(pbullet->base.x, pbullet->base.y + 4) || issolid(pbullet->base.x, pbullet->base.y))
  61         {
  62               pbullet->base.ym = -pbullet->base.ym;
  63               pbullet->base.y = (int)(pbullet->base.y / 32) * 32;
  64         }
  65
  66       pbullet->base.ym = pbullet->base.ym + GRAVITY;
  67
  68       if (pbullet->base.x < scroll_x ||
  69           pbullet->base.x > scroll_x + screen->w ||
  70           pbullet->base.y < 0 ||
  71           pbullet->base.y > screen->h ||
  72           issolid(pbullet->base.x + 4, pbullet->base.y + 2) ||
  73           issolid(pbullet->base.x, pbullet->base.y + 2))
  74         {
  75           bullets.erase(static_cast<std::vector<bullet_type>::iterator>(pbullet));
  76         }
  77
  78 }
  79
  80 void bullet_draw(bullet_type* pbullet)
  81 {
  82   if (pbullet->base.x >= scroll_x - pbullet->base.width &&
  83       pbullet->base.x <= scroll_x + screen->w)
  84     {
  85       texture_draw(&img_bullet, pbullet->base.x - scroll_x, pbullet->base.y,
  86                    NO_UPDATE);
  87     }
  88 }
  89
  90 void bullet_collision(bullet_type* pbullet, int c_object)
  91 {
  92
  93   if(c_object == CO_BADGUY)
  94     bullets.erase(static_cast<std::vector<bullet_type>::iterator>(pbullet));
  95
  96 }
  97
  98 void upgrade_init(upgrade_type *pupgrade, float x, float y, int dir, int kind)
  99 {
 100   pupgrade->base.width = 32;
 101   pupgrade->base.height = 0;
 102   pupgrade->kind = kind;
 103   pupgrade->base.x = x;
 104   pupgrade->base.y = y;
 105   if(dir == LEFT)
 106     pupgrade->base.xm = -2;
 107   else
 108     pupgrade->base.xm = 2;
 109   pupgrade->base.ym = -2;
 110   pupgrade->base.height = 0;
 111   pupgrade->old_base = pupgrade->base;
 112 }
 113
 114 void upgrade_action(upgrade_type *pupgrade)
 115 {
 116
 117
 118       if (pupgrade->base.height < 32)
 119         {
 120           /* Rise up! */
 121
 122           pupgrade->base.height = pupgrade->base.height + 0.7 * frame_ratio;
 123           if(pupgrade->base.height > 32)
 124             pupgrade->base.height = 32;
 125         }
 126       else
 127         {
 128           /* Move around? */
 129
 130           if (pupgrade->kind == UPGRADE_MINTS ||
 131               pupgrade->kind == UPGRADE_HERRING)
 132             {
 133               pupgrade->base.x = pupgrade->base.x + pupgrade->base.xm * frame_ratio;
 134               pupgrade->base.y = pupgrade->base.y + pupgrade->base.ym * frame_ratio;
 135
 136               collision_swept_object_map(&pupgrade->old_base,&pupgrade->base);
 137
 138               /* Off the screen?  Kill it! */
 139
 140               if (pupgrade->base.x < scroll_x - pupgrade->base.width)
 141                 upgrades.erase(static_cast<std::vector<upgrade_type>::iterator>(pupgrade));
 142               if (pupgrade->base.y > screen->h)
 143                 upgrades.erase(static_cast<std::vector<upgrade_type>::iterator>(pupgrade));
 144
 145               if (issolid(pupgrade->base.x + 1, pupgrade->base.y + 32.) ||
 146                   issolid(pupgrade->base.x + 31., pupgrade->base.y + 32.))
 147                 {
 148                   if (pupgrade->base.ym > 0)
 149                     {
 150                       if (pupgrade->kind == UPGRADE_MINTS)
 151                         {
 152                           pupgrade->base.ym = 0;
 153                         }
 154                       else if (pupgrade->kind == UPGRADE_HERRING)
 155                         {
 156                           pupgrade->base.ym = -8;
 157                         }
 158
 159                       pupgrade->base.y = (int)(pupgrade->base.y / 32) * 32;
 160                     }
 161                 }
 162               else
 163                 pupgrade->base.ym = pupgrade->base.ym + GRAVITY * frame_ratio;
 164
 165               if (issolid(pupgrade->base.x - 1, (int) pupgrade->base.y))
 166                 {
 167                   if(pupgrade->base.xm < 0)
 168                     pupgrade->base.xm = -pupgrade->base.xm;
 169                 }
 170               else if (issolid(pupgrade->base.x + pupgrade->base.width, (int) pupgrade->base.y))
 171                 {
 172                   if(pupgrade->base.xm > 0)
 173                     pupgrade->base.xm = -pupgrade->base.xm;
 174                 }
 175             }
 176
 177         }
 178 }
 179
 180 void upgrade_draw(upgrade_type* pupgrade)
 181 {
 182   SDL_Rect dest;
 183       if (pupgrade->base.height < 32)
 184         {
 185           /* Rising up... */
 186
 187           dest.x = (int)(pupgrade->base.x - scroll_x);
 188           dest.y = (int)(pupgrade->base.y + 32 - pupgrade->base.height);
 189           dest.w = 32;
 190           dest.h = (int)pupgrade->base.height;
 191
 192           if (pupgrade->kind == UPGRADE_MINTS)
 193             texture_draw_part(&img_mints,0,0,dest.x,dest.y,dest.w,dest.h,NO_UPDATE);
 194           else if (pupgrade->kind == UPGRADE_COFFEE)
 195             texture_draw_part(&img_coffee,0,0,dest.x,dest.y,dest.w,dest.h,NO_UPDATE);
 196           else if (pupgrade->kind == UPGRADE_HERRING)
 197             texture_draw_part(&img_golden_herring,0,0,dest.x,dest.y,dest.w,dest.h,NO_UPDATE);
 198         }
 199       else
 200         {
 201           if (pupgrade->kind == UPGRADE_MINTS)
 202             {
 203               texture_draw(&img_mints,
 204                            pupgrade->base.x - scroll_x, pupgrade->base.y,
 205                            NO_UPDATE);
 206             }
 207           else if (pupgrade->kind == UPGRADE_COFFEE)
 208             {
 209               texture_draw(&img_coffee,
 210                            pupgrade->base.x - scroll_x, pupgrade->base.y,
 211                            NO_UPDATE);
 212             }
 213           else if (pupgrade->kind == UPGRADE_HERRING)
 214             {
 215               texture_draw(&img_golden_herring,
 216                            pupgrade->base.x - scroll_x, pupgrade->base.y,
 217                            NO_UPDATE);
 218             }
 219         }
 220 }
 221
 222 void upgrade_collision(upgrade_type* pupgrade, void* p_c_object, int c_object)
 223 {
 224   player_type* pplayer = NULL;
 225
 226   switch (c_object)
 227     {
 228     case CO_PLAYER:
 229       /* Remove the upgrade: */
 230
 231       /* p_c_object is CO_PLAYER, so assign it to pplayer */
 232       pplayer = (player_type*) p_c_object;
 233
 234       upgrades.erase(static_cast<std::vector<upgrade_type>::iterator>(pupgrade));
 235
 236       /* Affect the player: */
 237
 238       if (pupgrade->kind == UPGRADE_MINTS)
 239         {
 240           play_sound(sounds[SND_EXCELLENT], SOUND_CENTER_SPEAKER);
 241           pplayer->size = BIG;
 242           pplayer->base.height = 64;
 243           pplayer->base.y -= 32;
 244           if(collision_object_map(&pplayer->base))
 245           {
 246           pplayer->base.height = 32;
 247           pplayer->base.y += 32;
 248           pplayer->duck = true;
 249           }
 250           timer_start(&super_bkgd_timer, 350);
 251         }
 252       else if (pupgrade->kind == UPGRADE_COFFEE)
 253         {
 254           play_sound(sounds[SND_COFFEE], SOUND_CENTER_SPEAKER);
 255           pplayer->got_coffee = true;
 256           timer_start(&super_bkgd_timer, 250);
 257         }
 258       else if (pupgrade->kind == UPGRADE_HERRING)
 259         {
 260           play_sound(sounds[SND_HERRING], SOUND_CENTER_SPEAKER);
 261           timer_start(&pplayer->invincible_timer,TUX_INVINCIBLE_TIME);
 262           timer_start(&super_bkgd_timer, 250);
 263           /* play the herring song ^^ */
 264           if (get_current_music() != HURRYUP_MUSIC)
 265             {
 266               set_current_music(HERRING_MUSIC);
 267               play_current_music();
 268             }
 269         }
 270       break;
 271     }
 272 }
 273