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 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15   #pragma hdrstop
  16 #endif
  17
  18 #ifndef  WX_PRECOMP
  19 #   include "wx/wx.h"
  20 #endif
  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     if (m_field)
  36     {
  37         delete[] m_field;
  38     }
  39 }
  40
  41 // Initialize the play field. Returns false on failure
  42 bool BombsGame::Init(int aWidth, int aHeight, bool easyCorner)
  43 {
  44     m_gridFocusX = m_gridFocusY = -1;
  45
  46     int x, y;
  47     int xx, yy;
  48
  49     if (m_field)
  50     {
  51         delete[] m_field;
  52     }
  53
  54     m_field = new short[aWidth*aHeight];
  55     if (!m_field)
  56     {
  57         m_width = m_height = 0;
  58         return false;
  59     }
  60
  61     m_width = aWidth;
  62     m_height = aHeight;
  63
  64     for(x=0; x<m_width; x++)
  65     {
  66         for(y=0; y<m_height; y++)
  67         {
  68             m_field[x+y*m_width] = ((float)rand()/RAND_MAX <PROB)
  69                 ? BG_HIDDEN | BG_BOMB
  70                 : BG_HIDDEN;
  71         }
  72     }
  73
  74     /* Force (0,0) not to have a bomb for those that don't want to have
  75        to guess on the first move. Better would be to for the MS rule that
  76        whatever is picked first isn't a bomb.
  77      */
  78     if(easyCorner)
  79     {
  80         m_field[0] = BG_HIDDEN;
  81     }
  82
  83     m_numBombCells = 0;
  84     for(x=0; x<m_width; x++)
  85         for(y=0; y<m_height; y++)
  86             if (m_field[x+y*m_width] & BG_BOMB)
  87             {
  88                 m_numBombCells++;
  89
  90                 for(xx=x-1; xx<=x+1; xx++)
  91                     if (xx>=0 && xx<m_width)
  92                         for(yy=y-1; yy<=y+1; yy++)
  93                             if (yy>=0 && yy<m_height && (yy!=y || xx!=x))
  94                                 m_field[xx+yy*m_width]++;
  95             }
  96
  97     m_numRemainingCells = m_height*m_width-m_numBombCells;
  98     m_numMarkedCells = 0;
  99
 100     return true;
 101 }
 102
 103 void BombsGame::Mark(int x, int y)
 104 {
 105     m_field[x+y*m_width] ^= BG_MARKED;
 106     if (IsMarked(x, y))
 107         m_numMarkedCells++;
 108     else
 109         m_numMarkedCells--;
 110 }
 111
 112 void BombsGame::Unhide(int x, int y, bool b_selected)
 113 {
 114     if (!IsHidden(x,y))
 115     {
 116         return;
 117     }
 118
 119     if (b_selected)
 120         m_field[x+y*m_width] |= BG_SELECTED;
 121
 122     m_field[x+y*m_width] &= ~BG_HIDDEN;
 123
 124     if (!IsBomb(x,y))
 125     {
 126         m_numRemainingCells--;
 127     }
 128 }
 129
 130
 131 void BombsGame::Explode(int x, int y)
 132 {
 133     m_field[x+y*m_width] |= BG_EXPLODED;
 134 }