threegamedlg.cpp

一个很好玩的小游戏

// ThreeGameDlg.cpp : implementation file
//

#include "stdafx.h"
#include "ThreeGame.h"
#include "ThreeGameDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CThreeGameDlg dialog
const CRect CThreeGameDlg::m_rcSquares[9] = {
    CRect ( 16,  16, 112, 112),
    CRect (128,  16, 224, 112),
    CRect (240,  16, 336, 112),
    CRect ( 16, 128, 112, 224),
    CRect (128, 128, 224, 224),
    CRect (240, 128, 336, 224),
    CRect ( 16, 240, 112, 336),
    CRect (128, 240, 224, 336),
    CRect (240, 240, 336, 336)
};

CThreeGameDlg::CThreeGameDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CThreeGameDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CThreeGameDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	m_nNextChar = EX;
    ::ZeroMemory (m_nGameGrid, 9 * sizeof (int));
}

void CThreeGameDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CThreeGameDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CThreeGameDlg, CDialog)
	//{{AFX_MSG_MAP(CThreeGameDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_LBUTTONDBLCLK()
	ON_WM_LBUTTONDOWN()
	ON_WM_RBUTTONDOWN()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CThreeGameDlg message handlers

BOOL CThreeGameDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	CRect rect (0, 0, 352, 352);
    CalcWindowRect (&rect);

    SetWindowPos (NULL, 0, 0, rect.Width (), rect.Height (),
        SWP_NOZORDER | SWP_NOMOVE | SWP_NOREDRAW);
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CThreeGameDlg::OnPaint() 
{ 
	CPaintDC dc(this);
	if (IsIconic())
	{
		 // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);

	}
	else
	{
		CDialog::OnPaint();
	}
	DrawBoard (&dc);
     
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CThreeGameDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CThreeGameDlg::OnLButtonDblClk(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	
	CClientDC dc (this);
    if (dc.GetPixel (point) == RGB (0, 0, 0))
        ResetGame ();
	CDialog::OnLButtonDblClk(nFlags, point);
}

void CThreeGameDlg::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	if (m_nNextChar != EX)
        return;

    int nPos = GetRectID (point);
    if ((nPos == -1) || (m_nGameGrid[nPos] != 0))
        return;

	m_nGameGrid[nPos] = EX;
    m_nNextChar = OH;


    CClientDC dc (this);
    DrawX (&dc, nPos);
    CheckForGameOver ();
	
	CDialog::OnLButtonDown(nFlags, point);
}

void CThreeGameDlg::OnRButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	
    if (m_nNextChar != OH)
        return;

    int nPos = GetRectID (point);
    if ((nPos == -1) || (m_nGameGrid[nPos] != 0))
        return;

    m_nGameGrid[nPos] = OH;
    m_nNextChar = EX;

    CClientDC dc (this);
    DrawO (&dc, nPos);
    CheckForGameOver ();
	
	CDialog::OnRButtonDown(nFlags, point);
}

int CThreeGameDlg::GetRectID (CPoint point)
{
	for (int i=0; i<9; i++) {
        if (m_rcSquares[i].PtInRect (point))
            return i;
    }
    return -1;

}
void CThreeGameDlg::DrawBoard (CDC* pDC)
{
	CPen pen(PS_SOLID,16,RGB(0,0,0));
	CPen* pOldPen=pDC->SelectObject(&pen);
	pDC->MoveTo(120,16);
	pDC->LineTo(120,336);

	pDC->MoveTo(232,16);
	pDC->LineTo(232,336);
	
	pDC->MoveTo (16, 120);
    pDC->LineTo (336, 120);

    pDC->MoveTo (16, 232);
    pDC->LineTo (336, 232);
	for (int i=0; i<9; i++) {
        if (m_nGameGrid[i] == EX)
            DrawX (pDC, i);
        else if (m_nGameGrid[i] == OH)
            DrawO (pDC, i);
    }
    pDC->SelectObject (pOldPen);

}
void CThreeGameDlg::DrawX (CDC* pDC, int nPos)
{
	CPen pen (PS_SOLID, 16, RGB (255, 0, 0));
    CPen* pOldPen = pDC->SelectObject (&pen);

    CRect rect = m_rcSquares[nPos];
    rect.DeflateRect (16, 16);
    pDC->MoveTo (rect.left, rect.top);
    pDC->LineTo (rect.right, rect.bottom);
    pDC->MoveTo (rect.left, rect.bottom);
    pDC->LineTo (rect.right, rect.top);

    pDC->SelectObject (pOldPen);

}
void CThreeGameDlg::DrawO (CDC* pDC, int nPos)
{
	CPen pen (PS_SOLID, 16, RGB (0, 0, 255));
    CPen* pOldPen = pDC->SelectObject (&pen);
    pDC->SelectStockObject (NULL_BRUSH);

    CRect rect = m_rcSquares[nPos];
    rect.DeflateRect (16, 16);
    pDC->Ellipse (rect);

    pDC->SelectObject (pOldPen);

}

void CThreeGameDlg::ResetGame ()
{
	m_nNextChar = EX;
    ::ZeroMemory (m_nGameGrid, 9 * sizeof (int));
    Invalidate ();

}
void CThreeGameDlg::CheckForGameOver ()
{
	int nWinner;

	
    if (nWinner = IsWinner ()) {
        CString string = (nWinner == EX) ?
            _T ("X wins!") : _T ("O wins!");
        MessageBox (string, _T ("Game Over"), MB_ICONEXCLAMATION | MB_OK);
        ResetGame ();
    }

	
    else if (IsDraw ()) {
        MessageBox (_T ("It's a draw!"), _T ("Game Over"),
            MB_ICONEXCLAMATION | MB_OK);
        ResetGame ();
    }

}
int CThreeGameDlg::IsWinner ()
{
	static int nPattern[8][3] = {
        0, 1, 2,
			3, 4, 5,
			6, 7, 8,
			0, 3, 6,
			1, 4, 7,
			2, 5, 8,
			0, 4, 8,
			2, 4, 6
    };

    for (int i=0; i<8; i++) {
        if ((m_nGameGrid[nPattern[i][0]] == EX) &&
            (m_nGameGrid[nPattern[i][1]] == EX) &&
            (m_nGameGrid[nPattern[i][2]] == EX))
            return EX;

        if ((m_nGameGrid[nPattern[i][0]] == OH) &&
            (m_nGameGrid[nPattern[i][1]] == OH) &&
            (m_nGameGrid[nPattern[i][2]] == OH))
            return OH;
    }
    return 0;

}
BOOL CThreeGameDlg::IsDraw ()
{
	for (int i=0; i<9; i++) {
        if (m_nGameGrid[i] == 0)
            return FALSE;
    }
    return TRUE;

}