bar.cpp

自制的双子球游戏

// Bar.cpp: implementation of the CBar class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "DBallGame.h"
#include "Bar.h"
#include "MyDef.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CBar::CBar()
{

}

CBar::~CBar()
{

}

void CBar::InitBar(CDC *dc, CRect *rect ,int y_pos)
{
	pDC = dc;
	m_rect = rect;
    m_PrePos = m_Pos;
	DrawBar(0);
	m_Pos = m_PrePos = m_rect->right /2;
	DrawBar(1);
	if(y_pos == BAR_BELOW)
		y_Pos = m_rect->bottom *10/11;//上方的板砖
	else if(y_pos == BAR_ABOVE)
		y_Pos = m_rect->bottom /11;//下方的板砖
	else
		TRACE("y_pos illegal");
		

}

void CBar::DrawBar(bool style)
{
	if(style==1)//画
	{
		pDC->SelectStockObject (BLACK_PEN);
    	pDC->SelectStockObject (BLACK_BRUSH);
	  	pDC->Rectangle (m_Pos-20,y_Pos-2,m_Pos+20,y_Pos+2);

	}
	else//擦
	{
		pDC->SelectStockObject (WHITE_PEN);
    	pDC->SelectStockObject (WHITE_BRUSH);
		pDC->Rectangle (m_PrePos-20,y_Pos-2,m_PrePos+20,y_Pos+2);
	}
	
}

void CBar::GoLeft()
{
	m_PrePos = m_Pos;
	if(m_Pos >= 20)
        m_Pos -= 7 ;
	DrawBar(0);
	DrawBar(1);

}

void CBar::GoRight()
{
	m_PrePos = m_Pos;
    if(m_Pos <= m_rect->right -20)
	    m_Pos  += 7;
	DrawBar(0);
	DrawBar(1);

}
int CBar::GetPos()
{
    return m_Pos;
}

void CBar::SetPos(int pos)
{
	m_PrePos = m_Pos ;
	DrawBar(0);
	m_Pos	= pos;
    DrawBar(1);

}