demos/bombs/game.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        bombs1.cpp
   3 // Purpose:     Implementation of the class BombsGame
   4 // Author:      P. Foggia 1996
   5 // Modified by: Wlodzimierz Skiba (ABX) since 2003
   6 // Created:     1996
   7 // Copyright:   (c) 1996 P. Foggia
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 #include "wx/wxprec.h"
  12
  13 #ifdef __BORLANDC__
  14   #pragma hdrstop
  15 #endif
  16
  17 #ifndef  WX_PRECOMP
  18 #   include "wx/wx.h"
  19 #endif
  20
  21 #include "game.h"
  22 #include <stdlib.h>
  23 #include <limits.h>
  24
  25 #define PROB 0.2
  26
  27 #ifndef RAND_MAX
  28 #   define RAND_MAX INT_MAX
  29 #endif
  30
  31
  32 BombsGame::~BombsGame()
  33 {
  34     if (m_field)
  35     {
  36         delete[] m_field;
  37     }
  38 }
  39
  40 // Initialize the play field. Returns false on failure
  41 bool BombsGame::Init(int aWidth, int aHeight, bool easyCorner)
  42 {
  43     m_gridFocusX = m_gridFocusY = -1;
  44
  45     int x, y;
  46     int xx, yy;
  47
  48     if (m_field)
  49     {
  50         delete[] m_field;
  51     }
  52
  53     m_field = new short[aWidth*aHeight];
  54     if (!m_field)
  55     {
  56         m_width = m_height = 0;
  57         return false;
  58     }
  59
  60     m_width = aWidth;
  61     m_height = aHeight;
  62
  63     for(x=0; x<m_width; x++)
  64     {
  65         for(y=0; y<m_height; y++)
  66         {
  67             m_field[x+y*m_width] = ((float)rand()/RAND_MAX <PROB)
  68                 ? BG_HIDDEN | BG_BOMB
  69                 : BG_HIDDEN;
  70         }
  71     }
  72
  73     /* Force (0,0) not to have a bomb for those that don't want to have
  74        to guess on the first move. Better would be to for the MS rule that
  75        whatever is picked first isn't a bomb.
  76      */
  77     if(easyCorner)
  78     {
  79         m_field[0] = BG_HIDDEN;
  80     }
  81
  82     m_numBombCells = 0;
  83     for(x=0; x<m_width; x++)
  84         for(y=0; y<m_height; y++)
  85             if (m_field[x+y*m_width] & BG_BOMB)
  86             {
  87                 m_numBombCells++;
  88
  89                 for(xx=x-1; xx<=x+1; xx++)
  90                     if (xx>=0 && xx<m_width)
  91                         for(yy=y-1; yy<=y+1; yy++)
  92                             if (yy>=0 && yy<m_height && (yy!=y || xx!=x))
  93                                 m_field[xx+yy*m_width]++;
  94             }
  95
  96     m_numRemainingCells = m_height*m_width-m_numBombCells;
  97     m_numMarkedCells = 0;
  98
  99     return true;
 100 }
 101
 102 void BombsGame::Mark(int x, int y)
 103 {
 104     m_field[x+y*m_width] ^= BG_MARKED;
 105     if (IsMarked(x, y))
 106         m_numMarkedCells++;
 107     else
 108         m_numMarkedCells--;
 109 }
 110
 111 void BombsGame::Unhide(int x, int y, bool b_selected)
 112 {
 113     if (!IsHidden(x,y))
 114     {
 115         return;
 116     }
 117
 118     if (b_selected)
 119         m_field[x+y*m_width] |= BG_SELECTED;
 120
 121     m_field[x+y*m_width] &= ~BG_HIDDEN;
 122
 123     if (!IsBomb(x,y))
 124     {
 125         m_numRemainingCells--;
 126     }
 127 }
 128
 129
 130 void BombsGame::Explode(int x, int y)
 131 {
 132     m_field[x+y*m_width] |= BG_EXPLODED;
 133 }