demos/bombs/game.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        bombs1.cpp
   3 // Purpose:     Implementation of the class BombsGame
   4 // Author:      P. Foggia 1996
   5 // Modified by:
   6 // Created:     1996
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1996 P. Foggia
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation
  14 #endif
  15
  16 #include "wx/wxprec.h"
  17
  18 #ifndef  WX_PRECOMP
  19   #include "wx/wx.h"
  20 #endif //precompiled headers
  21
  22 #include "game.h"
  23 #include <stdlib.h>
  24 #include <limits.h>
  25
  26 #define PROB 0.2
  27
  28 #ifndef RAND_MAX
  29 #define RAND_MAX INT_MAX
  30 #endif
  31
  32
  33 /*--------------------  BombsGame::~BombsGame()  ---------------------*/
  34 /*--------------------------------------------------------------------*/
  35 BombsGame::~BombsGame()
  36   { if (field)
  37       free(field);
  38   }
  39
  40 /*------------------  int BombsGame::Init(width,height)  -------------------*/
  41 /* Initialize the play field.   Returns 0 on failure                        */
  42 /*--------------------------------------------------------------------------*/
  43 int BombsGame::Init(int aWidth, int aHeight)
  44   { int x, y;
  45     int xx, yy;
  46
  47     if (field)
  48       free(field);
  49     field=(short *)malloc(aWidth*aHeight*sizeof(short));
  50     if (!field)
  51       { width=height=0;
  52         return 0;
  53       }
  54     width=aWidth;
  55     height=aHeight;
  56
  57     for(x=0; x<width; x++)
  58       for(y=0; y<height; y++)
  59         { field[x+y*width] = ((float)rand()/RAND_MAX <PROB)?
  60                              BG_HIDDEN | BG_BOMB :
  61                              BG_HIDDEN;
  62         }
  63
  64     bombs=0;
  65     for(x=0; x<width; x++)
  66       for(y=0; y<height; y++)
  67         if (field[x+y*width] & BG_BOMB)
  68           { bombs++;
  69             for(xx=x-1; xx<=x+1; xx++)
  70               if (xx>=0 && xx<width)
  71                 for(yy=y-1; yy<=y+1; yy++)
  72                   if (yy>=0 && yy<height && (yy!=y || xx!=x))
  73                     field[xx+yy*width]++;
  74           }
  75     normal_cells=height*width-bombs;
  76     return 1;
  77   }
  78
  79 /*----------------------  BombsGame::Mark(x,y)  -------------------------*/
  80 /* Marks/unmarks a cell                                                  */
  81 /*-----------------------------------------------------------------------*/
  82 void BombsGame::Mark(int x, int y)
  83   {
  84       field[x+y*width] ^= BG_MARKED;
  85   }
  86
  87 /*-------------------  BombsGame::Unhide(x,y)  ------------------------*/
  88 /* Unhides a cell                                                      */
  89 /*---------------------------------------------------------------------*/
  90 void BombsGame::Unhide(int x, int y)
  91   { if (!IsHidden(x,y))
  92       return;
  93     field[x+y*width] &= ~BG_HIDDEN;
  94     if (!IsBomb(x,y))
  95       normal_cells--;
  96   }
  97
  98 /*-------------------  BombsGame::Explode(x,y)  ------------------------*/
  99 /* Makes a cell exploded                                                */
 100 /*----------------------------------------------------------------------*/
 101 void BombsGame::Explode(int x, int y)
 102   {
 103     field[x+y*width] |= BG_EXPLODED;
 104   }
 105