ddstring.cpp

一个完整的2D滚屏游戏示例

#include "stdafx.h"
#include "resource.h"
#include "define.h"
#include "DDString.h"

/////////////////////////////////////////////////////////////////
CDDString::CDDString()
{
m_bActive=true;
m_nNumber=0;
//m_cWords="\0";//NULL;

m_nLength=0;
}
////////////////////////////////////////////////////////////////////////////////////
CDDString::CDDString(int nNumber,int nLength,RECT rect)
{
m_bActive=true;

m_nNumber=nNumber;
m_nLength=nLength;

m_rcSource=rect;
m_nHeight=rect.bottom-rect.top+1;
m_nWidth=rect.right-rect.left+1;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
void CDDString::Initialize(int nX,int nY,int nLength,int nSpace,RECT rect)
{
	m_nLength=nLength;
	m_nSpace=nSpace;

	SetSource(rect);
    SetShowPosition(nX,nY);
	
	for(int i=0;i<m_nLength;i++)
	{
		int nDelta=10+26;
		m_rcSourceArray[i].left		=m_rcSource.left+m_nWidth*nDelta;
		m_rcSourceArray[i].right	=m_rcSourceArray[i].left+m_nWidth-1;	
		m_rcSourceArray[i].top		=m_rcSource.top;
		m_rcSourceArray[i].bottom	=m_rcSourceArray[i].top+m_nHeight-1;	
	}
return;
}

///////////////////////////////////////////////////////////////////////////////////
//
void  CDDString::SetShowPosition(int nX,int nY)
{
m_nX=nX;
m_nY=nY;
	for(int i=0;i<m_nLength;i++)
	{
	m_nXArray[i]=m_nX+(m_nWidth+m_nSpace)*i;
	}
}

///////////////////////////////////////////////////////////////////////////////////
//
void CDDString::SetSource(RECT rect)
{
	m_rcSource=rect;
    m_nHeight=rect.bottom-rect.top+1;
	m_nWidth=rect.right-rect.left+1;
	return;
}

//////////////////////////////////////////////////////////////////////
void CDDString::SetRect(int nPosition,int nWords)
{
	if(nPosition<m_nLength&&nPosition>=0)
	{
	m_rcSourceArray[nPosition].left=m_rcSource.left+m_nWidth*nWords;
	m_rcSourceArray[nPosition].right=m_rcSourceArray[nPosition].left+m_nWidth-1;	
	m_rcSourceArray[nPosition].top=m_rcSource.top;
	m_rcSourceArray[nPosition].bottom=m_rcSourceArray[nPosition].top+m_nHeight-1;	
		
	//*
	char cTemp=(char)nWords-10+65;
	int  nLength=m_cWords.GetLength();
		if(nPosition>nLength-1)
		{
			for(int i=nLength;i<m_nLength;i++)
			{
			if(i!=nPosition)m_cWords+=' ';
			else m_cWords+=cTemp;
			}
		}
		else
		m_cWords.SetAt(nPosition,cTemp);
		//*/
	}
return;
}

/////////////////////////////////////////////////////////////////
bool CDDString::ArrangeRect(int nNumber)
{
int nTemp1,nTemp2,nDelta;

m_nNumber=nNumber;
nTemp1=m_nNumber;

	for(int i=m_nLength-1;i>-1;i--)
	{
    nTemp2=nTemp1/10;
	nDelta=nTemp1-nTemp2*10;
	nTemp1=nTemp2;
	
	m_rcSourceArray[i].left=m_rcSource.left+m_nWidth*nDelta;
	m_rcSourceArray[i].right=m_rcSourceArray[i].left+m_nWidth-1;	
	m_rcSourceArray[i].top=m_rcSource.top;
	m_rcSourceArray[i].bottom=m_rcSourceArray[i].top+m_nHeight-1;	
	}

return true;
}

/////////////////////////////////////////////////////////////////////////
//
bool CDDString::ArrangeRect(CString cWords)
{
int nDelta;
    	
    m_cWords=cWords;
   
	for(int i=0;i<m_nLength;i++)
	{
		//if(m_cWords[i]!='\0')//为什么这样写在WIN98下VC5编译后运行即非法？
		if(i<m_cWords.GetLength())
		{
		nDelta=(int)(m_cWords[i]);
		//if(nDelta>90)nDelta-=26;//将小写字母统一为大写；	
		nDelta=nDelta-65+10;
		if(nDelta<0||nDelta>38)nDelta=38;
		}
		else//字符串结束了，将后面空白处填满； 
		{
		nDelta=38;
		}
	m_rcSourceArray[i].left=m_rcSource.left+m_nWidth*nDelta;
	m_rcSourceArray[i].right=m_rcSourceArray[i].left+m_nWidth-1;	
	m_rcSourceArray[i].top=m_rcSource.top;
	m_rcSourceArray[i].bottom=m_rcSourceArray[i].top+m_nHeight-1;	
	}

return true;
}

///////////////////////////////////////////////////////////////////////////////////////////////////////////////
//
bool CDDString::Show(CDD *pDD)
{	 
	if(m_bActive)
	for(int i=0;i<m_nLength;i++)
	if(!pDD->BlitSourceToBack(m_nXArray[i],
							  m_nY,
							  m_rcSourceArray[i],
							  DDBLTFAST_SRCCOLORKEY))return false;

	return true;
}