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