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, 255,
  86                    NO_UPDATE);
  87     }
  88 }
  89
  90 void bullet_collision(bullet_type* pbullet, int c_object)
  91 {
  92   if(c_object == CO_BADGUY) {
  93     std::vector<bullet_type>::iterator i;
  94     for(i = bullets.begin(); i != bullets.end(); ++i) {
  95         if(& (*i) == pbullet) {
  96             bullets.erase(i);
  97             return;
  98         }
  99     }
 100   }
 101 }
 102
 103 void upgrade_init(upgrade_type *pupgrade, float x, float y, int dir, int kind)
 104 {
 105   pupgrade->base.width = 32;
 106   pupgrade->base.height = 0;
 107   pupgrade->kind = kind;
 108   pupgrade->base.x = x;
 109   pupgrade->base.y = y;
 110   if(dir == LEFT)
 111     pupgrade->base.xm = -2;
 112   else
 113     pupgrade->base.xm = 2;
 114   pupgrade->base.ym = -2;
 115   pupgrade->base.height = 0;
 116   pupgrade->old_base = pupgrade->base;
 117 }
 118
 119 void upgrade_action(upgrade_type *pupgrade)
 120 {
 121
 122
 123       if (pupgrade->base.height < 32)
 124         {
 125           /* Rise up! */
 126
 127           pupgrade->base.height = pupgrade->base.height + 0.7 * frame_ratio;
 128           if(pupgrade->base.height > 32)
 129             pupgrade->base.height = 32;
 130         }
 131       else
 132         {
 133           /* Move around? */
 134
 135           if (pupgrade->kind == UPGRADE_MINTS ||
 136               pupgrade->kind == UPGRADE_HERRING)
 137             {
 138               pupgrade->base.x = pupgrade->base.x + pupgrade->base.xm * frame_ratio;
 139               pupgrade->base.y = pupgrade->base.y + pupgrade->base.ym * frame_ratio;
 140
 141               collision_swept_object_map(&pupgrade->old_base,&pupgrade->base);
 142
 143               /* Off the screen?  Kill it! */
 144
 145               if (pupgrade->base.x < scroll_x - pupgrade->base.width)
 146                 upgrades.erase(static_cast<std::vector<upgrade_type>::iterator>(pupgrade));
 147               if (pupgrade->base.y > screen->h)
 148                 upgrades.erase(static_cast<std::vector<upgrade_type>::iterator>(pupgrade));
 149
 150               if (issolid(pupgrade->base.x + 1, pupgrade->base.y + 32.) ||
 151                   issolid(pupgrade->base.x + 31., pupgrade->base.y + 32.))
 152                 {
 153                   if (pupgrade->base.ym > 0)
 154                     {
 155                       if (pupgrade->kind == UPGRADE_MINTS)
 156                         {
 157                           pupgrade->base.ym = 0;
 158                         }
 159                       else if (pupgrade->kind == UPGRADE_HERRING)
 160                         {
 161                           pupgrade->base.ym = -8;
 162                         }
 163
 164                       pupgrade->base.y = (int)(pupgrade->base.y / 32) * 32;
 165                     }
 166                 }
 167               else
 168                 pupgrade->base.ym = pupgrade->base.ym + GRAVITY * frame_ratio;
 169
 170               if (issolid(pupgrade->base.x - 1, (int) pupgrade->base.y))
 171                 {
 172                   if(pupgrade->base.xm < 0)
 173                     pupgrade->base.xm = -pupgrade->base.xm;
 174                 }
 175               else if (issolid(pupgrade->base.x + pupgrade->base.width, (int) pupgrade->base.y))
 176                 {
 177                   if(pupgrade->base.xm > 0)
 178                     pupgrade->base.xm = -pupgrade->base.xm;
 179                 }
 180             }
 181
 182         }
 183 }
 184
 185 void upgrade_draw(upgrade_type* pupgrade)
 186 {
 187   SDL_Rect dest;
 188       if (pupgrade->base.height < 32)
 189         {
 190           /* Rising up... */
 191
 192           dest.x = (int)(pupgrade->base.x - scroll_x);
 193           dest.y = (int)(pupgrade->base.y + 32 - pupgrade->base.height);
 194           dest.w = 32;
 195           dest.h = (int)pupgrade->base.height;
 196
 197           if (pupgrade->kind == UPGRADE_MINTS)
 198             texture_draw_part(&img_mints,0,0,dest.x,dest.y,dest.w,dest.h);
 199           else if (pupgrade->kind == UPGRADE_COFFEE)
 200             texture_draw_part(&img_coffee,0,0,dest.x,dest.y,dest.w,dest.h);
 201           else if (pupgrade->kind == UPGRADE_HERRING)
 202             texture_draw_part(&img_golden_herring,0,0,dest.x,dest.y,dest.w,dest.h);
 203         }
 204       else
 205         {
 206           if (pupgrade->kind == UPGRADE_MINTS)
 207             {
 208               texture_draw(&img_mints,
 209                            pupgrade->base.x - scroll_x, pupgrade->base.y);
 210             }
 211           else if (pupgrade->kind == UPGRADE_COFFEE)
 212             {
 213               texture_draw(&img_coffee,
 214                            pupgrade->base.x - scroll_x, pupgrade->base.y);
 215             }
 216           else if (pupgrade->kind == UPGRADE_HERRING)
 217             {
 218               texture_draw(&img_golden_herring,
 219                            pupgrade->base.x - scroll_x, pupgrade->base.y);
 220             }
 221         }
 222 }
 223
 224 void upgrade_collision(upgrade_type* pupgrade, void* p_c_object, int c_object)
 225 {
 226   Player* pplayer = NULL;
 227
 228   switch (c_object)
 229     {
 230     case CO_PLAYER:
 231       /* Remove the upgrade: */
 232
 233       /* p_c_object is CO_PLAYER, so assign it to pplayer */
 234       pplayer = (Player*) p_c_object;
 235
 236       upgrades.erase(static_cast<std::vector<upgrade_type>::iterator>(pupgrade));
 237
 238       /* Affect the player: */
 239
 240       if (pupgrade->kind == UPGRADE_MINTS)
 241         {
 242           play_sound(sounds[SND_EXCELLENT], SOUND_CENTER_SPEAKER);
 243           pplayer->size = BIG;
 244           pplayer->base.height = 64;
 245           pplayer->base.y -= 32;
 246           if(collision_object_map(&pplayer->base))
 247           {
 248           pplayer->base.height = 32;
 249           pplayer->base.y += 32;
 250           pplayer->duck = true;
 251           }
 252           timer_start(&super_bkgd_timer, 350);
 253         }
 254       else if (pupgrade->kind == UPGRADE_COFFEE)
 255         {
 256           play_sound(sounds[SND_COFFEE], SOUND_CENTER_SPEAKER);
 257           pplayer->got_coffee = true;
 258           timer_start(&super_bkgd_timer, 250);
 259         }
 260       else if (pupgrade->kind == UPGRADE_HERRING)
 261         {
 262           play_sound(sounds[SND_HERRING], SOUND_CENTER_SPEAKER);
 263           timer_start(&pplayer->invincible_timer,TUX_INVINCIBLE_TIME);
 264           timer_start(&super_bkgd_timer, 250);
 265           /* play the herring song ^^ */
 266           if (get_current_music() != HURRYUP_MUSIC)
 267             {
 268               set_current_music(HERRING_MUSIC);
 269               play_current_music();
 270             }
 271         }
 272       break;
 273     }
 274 }
 275