Games/lbreakout2/client/shine.c

   1 /***************************************************************************
   2                           shine.c  -  description
   3                              -------------------
   4     begin                : Thu Sep 13 2001
   5     copyright            : (C) 2001 by Michael Speck
   6     email                : kulkanie@gmx.net
   7  ***************************************************************************/
   8
   9 /***************************************************************************
  10  *                                                                         *
  11  *   This program is free software; you can redistribute it and/or modify  *
  12  *   it under the terms of the GNU General Public License as published by  *
  13  *   the Free Software Foundation; either version 2 of the License, or     *
  14  *   (at your option) any later version.                                   *
  15  *                                                                         *
  16  ***************************************************************************/
  17
  18 #include "lbreakout.h"
  19 #include "config.h"
  20
  21 extern  SDL_Surface *stk_display;
  22 extern  Config config;
  23 extern  SDL_Surface *offscreen;
  24 extern  SDL_Surface *shine_pic;
  25 extern  Game *game;
  26 float   shine_change = 0.020; /* per ms */
  27 int     shine_frame = 6; /* maximum frame */
  28 float   shine_cur = 0; /* current frame */
  29 int     shine_x, shine_y; /* position where current shine is drawn */
  30 int     shine_recreate = 1;
  31 Delay   shine_delay; /* delay between shines */
  32
  33 /*
  34 ====================================================================
  35 Load/delete resources
  36 ====================================================================
  37 */
  38 void shine_load()
  39 {
  40         delay_set( &shine_delay, 200 );
  41 }
  42 void shine_delete()
  43 {
  44 }
  45 /*
  46 ====================================================================
  47 Recreate shine on a random but valid brick
  48 ====================================================================
  49 */
  50 void shine_create()
  51 {
  52         int x_add, y_add, x, y;
  53         shine_cur = 0;
  54         shine_x = 0; shine_y = 0;
  55
  56         if ( !config.anim ) return;
  57
  58         x = (rand() % (BRICK_WIDTH - 2)) + 1;
  59         y = (rand() % (BRICK_HEIGHT - 2)) + 1;
  60         x_add = rand() % 2 == 0 ? 1 : -1;
  61         y_add = rand() % 2 == 0 ? 1 : -1;
  62
  63         while (x > 0 && x < MAP_WIDTH - 1 && y > 0 && y < MAP_HEIGHT - 1) {
  64                 if (game->bricks[x][y].type != MAP_EMPTY && game->bricks[x][y].id != INVIS_BRICK_ID ) {
  65                         shine_x = x * BRICK_WIDTH;
  66                         shine_y = y * BRICK_HEIGHT;
  67                         break;
  68                 }
  69                 x += x_add; y += y_add;
  70         }
  71         /* if creation succeeded don't create any more shines */
  72         if ( shine_x != 0 && shine_y != 0 ) shine_recreate = 0;
  73 }
  74 /*
  75 ====================================================================
  76 Reset (delete( shine
  77 ====================================================================
  78 */
  79 void shine_reset()
  80 {
  81         shine_x = shine_y = 0;
  82         shine_recreate = 1;
  83         delay_reset( &shine_delay );
  84 }
  85 /*
  86 ====================================================================
  87 Show/hide current shine
  88 ====================================================================
  89 */
  90 void shine_hide()
  91 {
  92         if (shine_x == 0 && shine_y == 0) return;
  93         stk_surface_blit( offscreen, shine_x, shine_y,
  94                         BRICK_WIDTH, BRICK_HEIGHT,
  95                         stk_display, shine_x, shine_y );
  96         stk_display_store_drect();
  97 }
  98 void shine_show()
  99 {
 100         if (shine_x == 0 && shine_y == 0) return;
 101         stk_surface_blit( shine_pic, (int)shine_cur * BRICK_WIDTH, 0,
 102                         BRICK_WIDTH, BRICK_HEIGHT,
 103                         stk_display, shine_x, shine_y );
 104 }
 105 /*
 106    ====================================================================
 107    Update shine
 108    ====================================================================
 109    */
 110 void shine_update( int ms )
 111 {
 112         /* recreate shine? */
 113         if ( shine_recreate ) {
 114                 shine_x = shine_y = 0; /* if recreation is demanded delete old shine */
 115                 if ( delay_timed_out( &shine_delay, ms ) ) shine_create();
 116         }
 117         else {
 118                 shine_cur += shine_change * ms;
 119                 if (shine_cur > shine_frame) {
 120                         shine_recreate = 1;
 121                         delay_reset( &shine_delay );
 122                 }
 123         }
 124 }