src/special.c

   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   pbullet->base.alive = YES;
  37
  38   if (dir == RIGHT)
  39     {
  40       pbullet->base.x = x + 32;
  41       pbullet->base.xm = BULLET_XM + xm;
  42     }
  43   else
  44     {
  45       pbullet->base.x = x;
  46       pbullet->base.xm = -BULLET_XM + xm;
  47     }
  48
  49   pbullet->base.y = y;
  50   pbullet->base.ym = BULLET_STARTING_YM;
  51 }
  52
  53 void bullet_action(bullet_type* pbullet)
  54 {
  55   if (pbullet->base.alive)
  56     {
  57       pbullet->base.x = pbullet->base.x + pbullet->base.xm * frame_ratio;
  58       pbullet->base.y = pbullet->base.y + pbullet->base.ym * frame_ratio;
  59
  60       if (issolid(pbullet->base.x, pbullet->base.y))
  61         {
  62           if (issolid(pbullet->base.x, pbullet->base.y - pbullet->base.ym))
  63             pbullet->base.alive = NO;
  64           else
  65             {
  66               if (pbullet->base.ym >= 0)
  67                 {
  68                   pbullet->base.y = (int)(pbullet->base.y / 32) * 32 - 8;
  69                 }
  70               pbullet->base.ym = -pbullet->base.ym;
  71             }
  72         }
  73
  74       pbullet->base.ym = pbullet->base.ym + GRAVITY;
  75
  76       if (pbullet->base.x < scroll_x ||
  77           pbullet->base.x > scroll_x + screen->w)
  78         {
  79           pbullet->base.alive = NO;
  80         }
  81     }
  82
  83 }
  84
  85 void bullet_draw(bullet_type* pbullet)
  86 {
  87   if (pbullet->base.alive  &&
  88       pbullet->base.x >= scroll_x - pbullet->base.width &&
  89       pbullet->base.x <= scroll_x + screen->w)
  90     {
  91       texture_draw(&img_bullet, pbullet->base.x - scroll_x, pbullet->base.y,
  92                    NO_UPDATE);
  93     }
  94 }
  95
  96 void bullet_collision(bullet_type* pbullet, int c_object)
  97 {
  98
  99   if(c_object == CO_BADGUY)
 100     pbullet->base.alive = NO;
 101
 102 }
 103
 104 void upgrade_init(upgrade_type *pupgrade, float x, float y, int kind)
 105 {
 106   pupgrade->base.width = 32;
 107   pupgrade->base.height = 0;
 108   pupgrade->base.alive = YES;
 109   pupgrade->kind = kind;
 110   pupgrade->base.x = x;
 111   pupgrade->base.y = y;
 112   pupgrade->base.xm = 2;
 113   pupgrade->base.ym = -2;
 114   pupgrade->base.height = 0;
 115 }
 116
 117 void upgrade_action(upgrade_type *pupgrade)
 118 {
 119
 120   if (pupgrade->base.alive)
 121     {
 122       if (pupgrade->base.height < 32)
 123         {
 124           /* Rise up! */
 125
 126           pupgrade->base.height = pupgrade->base.height + 0.7 * frame_ratio;
 127           if(pupgrade->base.height > 32)
 128           pupgrade->base.height = 32;
 129         }
 130       else
 131         {
 132           /* Move around? */
 133
 134           if (pupgrade->kind == UPGRADE_MINTS ||
 135               pupgrade->kind == UPGRADE_HERRING)
 136             {
 137               pupgrade->base.x = pupgrade->base.x + pupgrade->base.xm * frame_ratio;
 138               pupgrade->base.y = pupgrade->base.y + pupgrade->base.ym * frame_ratio;
 139
 140               if (issolid(pupgrade->base.x, pupgrade->base.y + 31.) ||
 141                   issolid(pupgrade->base.x + 31., pupgrade->base.y + 31.))
 142                 {
 143                   if (pupgrade->base.ym > 0)
 144                     {
 145                       if (pupgrade->kind == UPGRADE_MINTS)
 146                         {
 147                           pupgrade->base.ym = 0;
 148                         }
 149                       else if (pupgrade->kind == UPGRADE_HERRING)
 150                         {
 151                           pupgrade->base.ym = -8;
 152                         }
 153
 154                       pupgrade->base.y = (int)(pupgrade->base.y / 32) * 32;
 155                     }
 156                 }
 157               else
 158                 pupgrade->base.ym = pupgrade->base.ym + GRAVITY;
 159
 160                   if (issolid(pupgrade->base.x - 1, (int) pupgrade->base.y))
 161                     {
 162                       if(pupgrade->base.xm < 0)
 163                       pupgrade->base.xm = -pupgrade->base.xm;
 164                     }
 165                     else if (issolid(pupgrade->base.x + pupgrade->base.width-1, (int) pupgrade->base.y))
 166                     {
 167                       if(pupgrade->base.xm > 0)
 168                       pupgrade->base.xm = -pupgrade->base.xm;
 169                     }
 170             }
 171
 172
 173           /* Off the screen?  Kill it! */
 174
 175           if (pupgrade->base.x < scroll_x - pupgrade->base.width)
 176             pupgrade->base.alive = NO;
 177
 178         }
 179     }
 180 }
 181
 182 void upgrade_draw(upgrade_type* pupgrade)
 183 {
 184 SDL_Rect dest;
 185   if (pupgrade->base.alive)
 186     {
 187       if (pupgrade->base.height < 32)
 188         {
 189           /* Rising up... */
 190
 191           dest.x = (int)(pupgrade->base.x - scroll_x);
 192           dest.y = (int)(pupgrade->base.y + 32 - pupgrade->base.height);
 193           dest.w = 32;
 194           dest.h = (int)pupgrade->base.height;
 195
 196           if (pupgrade->kind == UPGRADE_MINTS)
 197             texture_draw_part(&img_mints,0,0,dest.x,dest.y,dest.w,dest.h,NO_UPDATE);
 198           else if (pupgrade->kind == UPGRADE_COFFEE)
 199             texture_draw_part(&img_coffee,0,0,dest.x,dest.y,dest.w,dest.h,NO_UPDATE);
 200           else if (pupgrade->kind == UPGRADE_HERRING)
 201             texture_draw_part(&img_golden_herring,0,0,dest.x,dest.y,dest.w,dest.h,NO_UPDATE);
 202         }
 203       else
 204         {
 205           if (pupgrade->kind == UPGRADE_MINTS)
 206             {
 207               texture_draw(&img_mints,
 208                            pupgrade->base.x - scroll_x, pupgrade->base.y,
 209                            NO_UPDATE);
 210             }
 211           else if (pupgrade->kind == UPGRADE_COFFEE)
 212             {
 213               texture_draw(&img_coffee,
 214                            pupgrade->base.x - scroll_x, pupgrade->base.y,
 215                            NO_UPDATE);
 216             }
 217           else if (pupgrade->kind == UPGRADE_HERRING)
 218             {
 219               texture_draw(&img_golden_herring,
 220                            pupgrade->base.x - scroll_x, pupgrade->base.y,
 221                            NO_UPDATE);
 222             }
 223         }
 224     }
 225 }
 226
 227 void upgrade_collision(upgrade_type* pupgrade, void* p_c_object, int c_object)
 228 {
 229   player_type* pplayer = NULL;
 230
 231   switch (c_object)
 232     {
 233     case CO_PLAYER:
 234       /* Remove the upgrade: */
 235
 236       /* p_c_object is CO_PLAYER, so assign it to pplayer */
 237       pplayer = (player_type*) p_c_object;
 238
 239       pupgrade->base.alive = NO;
 240
 241       /* Affect the player: */
 242
 243       if (pupgrade->kind == UPGRADE_MINTS)
 244         {
 245           play_sound(sounds[SND_EXCELLENT], SOUND_CENTER_SPEAKER);
 246           pplayer->size = BIG;
 247           pplayer->base.height = 64;
 248           timer_start(&super_bkgd_timer, 350);
 249         }
 250       else if (pupgrade->kind == UPGRADE_COFFEE)
 251         {
 252           play_sound(sounds[SND_COFFEE], SOUND_CENTER_SPEAKER);
 253           pplayer->got_coffee = YES;
 254           timer_start(&super_bkgd_timer, 250);
 255         }
 256       else if (pupgrade->kind == UPGRADE_HERRING)
 257         {
 258           play_sound(sounds[SND_HERRING], SOUND_CENTER_SPEAKER);
 259           timer_start(&pplayer->invincible_timer,TUX_INVINCIBLE_TIME);
 260           timer_start(&super_bkgd_timer, 250);
 261           /* play the herring song ^^ */
 262           if (current_music != HURRYUP_MUSIC)
 263             {
 264               current_music = HERRING_MUSIC;
 265               if (playing_music())
 266                 halt_music();
 267             }
 268         }
 269       break;
 270     }
 271 }
 272