一些directdraw整合的画图类

 

// Graphic.h: interface for the CGraphic class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_GRAPHIC_H__AEDE17EF_1768_44AF_854B_EB2C98936FAB__INCLUDED_)
#define AFX_GRAPHIC_H__AEDE17EF_1768_44AF_854B_EB2C98936FAB__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "head.h"

class CGraphic  
{
private:
	bool                    m_bfScreen;    // 是否全屏（在WIN32下通常都为全屏）
	DWORD                   m_dwHeight;    // 屏幕高
	DWORD                   m_dwWidth;     // 屏幕宽
	DWORD                   m_dwCDepth;    // 颜色深度（8位、16位、32位、64位，通常为32位）
	HWND                    m_hWnd;        // 窗口句柄
	LPDIRECTDRAW7           m_pDD7;        // DirectDraw对象
	LPDIRECTDRAWSURFACE7    m_pPSur;       // 前(页)缓冲
	LPDIRECTDRAWSURFACE7    m_pBBuf;       // 后(页)缓冲
	RECT                    m_bRect;
	RECT                    m_rcRect;
	DDCOLORKEY              m_key;         // 颜色键值
	LPDIRECTDRAWCLIPPER     lpDDclip;      // Directdraw剪切板（用途相当于把图纸上的没用的东西剪掉，留下我们要看的东西）
	POINT                   m_MPos;         //--光标的位置

public:
	CGraphic();
	virtual ~CGraphic();
    LPDIRECTDRAWSURFACE7 GetPBuffer()
	{
		return m_pPSur;
	}

	 LPDIRECTDRAWSURFACE7 GetBBuffer()
	{
		return m_pBBuf;
	}

	//----------------------------------------------------------------------------------------
	//Name: InitDDraw 初始化离屏窗体
	//Desc: hWnd 当前窗口
	//      bfScreen 是否全屏
	//      Width 屏幕宽
	//      Height 屏幕高
	//      CDepth 颜色深度
	//----------------------------------------------------------------------------------------
	bool InitDDraw(HWND hWnd,bool bfScreen,DWORD Height,DWORD Width,DWORD CDepth);

	//----------------------------------------------------------------------------------------
	//Name: LoadToOffScreen 初始化离屏缓冲区（加载位图）
	//Desc: oBuffer为指向离屏缓冲区的指针   dwWidth 离屏缓存区的宽,   
	//      dwHeight离屏缓存区的高,         BitMapFile 位图源文件
	//      b_ColorKey  是否需要透明        color 透明色
	//----------------------------------------------------------------------------------------
	bool LoadToOffScreen(LPDIRECTDRAWSURFACE7& oBuffer,DWORD dwWidth,DWORD dwHeight, 
		                 LPCSTR BitMapFile,bool b_ColorKey,DWORD color);

	//----------------------------------------------------------------------------------------
	//Name: BltBBuffer 画图
	//Desc: oBuffer 缓冲
	//      b_ColorKey 是否需要透明,   
	//      x  图片的X坐标
	//      y  图片的Y坐标
	//      ClipX  图片抠像X起点 
	//      ClipY  图片抠像Y起点
	//      ClipEndX 图片抠像X结束点
	//      CLipEndY 图片抠像Y结束点
	//----------------------------------------------------------------------------------------
	void BltBBuffer(LPDIRECTDRAWSURFACE7 oBuffer,bool b_ColorKey,int x ,int y,  int ClipX,    int ClipY,    int ClipEndX,     int CLipEndY);
    
	// 翻页
	void Flip();
	// 清除当前图片资源（这样可以重新加载一个新的图片进来）
	void ClearBuffer(LPDIRECTDRAWSURFACE7& Buffer);
	// 文字输出
	void OutText(LPCSTR str, int x, int y,COLORREF color);
	// 设置鼠标区域（加载鼠标图片时可以使用）
	void SetMouseRect(RECT* m_rect, int scWidth, int scHeight, int msWidth, int msHeight);// 光标
    /*void CopyToBuffer(LPDIRECTDRAWSURFACE7& SrcBuffer,LPDIRECTDRAWSURFACE7& DestBuffer,
		          bool b_ColorKey,int x,int y,RECT m_rect);

	void CopyToBuffer(LPDIRECTDRAWSURFACE7& SrcBuffer,LPDIRECTDRAWSURFACE7& DestBuffer,
		          bool b_ColorKey,float zoomX, float zoomY);*/
	//void Flip(int x, int y, RECT m_rect);
private:
	//----------------------------------------------------------------------------------------
	//Name: InitOffScreen 初始化离屏缓冲区，类内部使用，LoadToOffScreen()函数调用，外部不需要
	//Desc: oBuffer为指向离屏缓冲区的指针   dwWidth 离屏缓存区的宽,   
	//      dwHeight离屏缓存区的高,         b_ColorKey 是否需要做透明
	//      color 透明色
	//----------------------------------------------------------------------------------------
	bool InitOffScreen(LPDIRECTDRAWSURFACE7& oBuffer,DWORD dwWidth,DWORD dwHeight,
		               bool b_ColorKey,DWORD color);
	// 设置透明的颜色值（内部调用）
	void DDColorKey(LPDIRECTDRAWSURFACE7 oBuffer,DWORD color);

};

#endif // !defined(AFX_GRAPHIC_H__AEDE17EF_1768_44AF_854B_EB2C98936FAB__INCLUDED_)

// Graphic.cpp: implementation of the CGraphic class.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"

#include "Graphic.h"

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
DDSURFACEDESC2			desc;           // 剪裁属性（前页主绘属性）
DDSCAPS2				caps;			// 剪裁属性（后页属性）

CGraphic::CGraphic()
{
	m_bfScreen   = true;
	m_dwWidth    = 1024;
	m_dwHeight   = 768;
	m_dwCDepth   = 32;
	m_hWnd       = NULL;
	m_pDD7       = NULL;
	m_pPSur      = NULL;
	m_pBBuf      = NULL;
	lpDDclip     = NULL;

}

CGraphic::~CGraphic()
{
	SafeRelease(lpDDclip);//删除剪裁 
}


//----------------------------------------------------------------------------------------
//Name: InitDDraw 初始化离屏窗体
//Desc: hWnd 当前窗口
//      bfScreen 是否全屏
//      Width 屏幕宽
//      Height 屏幕高
//      CDepth 颜色深度
//----------------------------------------------------------------------------------------
bool CGraphic::InitDDraw(HWND hWnd,bool bfScreen,DWORD Width,DWORD Height,DWORD CDepth)
{

	m_hWnd		= hWnd;			//窗口句柄
	m_bfScreen	= bfScreen;		//是否全屏
	m_dwWidth	= Width;		//屏幕的宽
	m_dwHeight	= Height;		//屏幕的高
	m_dwCDepth	= CDepth;		//颜色深度
    HRESULT      result;

	// 创建一个DirectDraw对象
	result = DirectDrawCreateEx(NULL,				// 用当前的显示驱动 
								(VOID**)&m_pDD7,    // DirectDraw对象
								IID_IDirectDraw7,   // 使用版本7，目前Draw的最高版本吧
								NULL);				// 其它参数，没有，默认为NULL
	if (result != DD_OK)
	{
		MessageBox(NULL, "建立DirectDraw对象失败!", NULL, MB_OK);
		return	false;
	}

	if(m_bfScreen)
	{
		// 设定程序协调层级
//		result = m_pDD7->SetCooperativeLevel(m_hWnd, DDSCL_NORMAL);	  // 窗口模式，MFC中可使用，目前在WIN32还没有找到怎么使用它
		result = m_pDD7->SetCooperativeLevel(m_hWnd,                  // 当前窗口
											DDSCL_EXCLUSIVE           // 独占
											|DDSCL_FULLSCREEN);       // 全屏
		if(result != DD_OK)
		{
			MessageBox(NULL, "设定程序协调层级失败!", NULL, MB_OK);
			return	false;
		}
		// 设定屏幕显示模式(此模式将把显示器的显示模式一起改变，当窗口关闭后，将被还原)
		result = m_pDD7->SetDisplayMode(m_dwWidth,                 // 宽
										m_dwHeight,                // 高
										m_dwCDepth,                // 颜色深度
										0, 
										DDSDM_STANDARDVGAMODE);
		if(result != DD_OK)
		{
			MessageBox(NULL, "设定屏幕显示模式失败!", NULL, MB_OK);
			return	false;
		}

		//创剪裁器(必须在设置完DirectDraw控制级后,创建主页面之前进行)
		result=m_pDD7->CreateClipper(NULL,&lpDDclip,NULL);   
		if(result != MB_OK)
		{   
			return   FALSE;   
		}   
		lpDDclip->SetHWnd(0,m_hWnd);   // 设置剪裁窗口


		memset(&desc, 0, sizeof(desc));	 
		desc.dwSize				= sizeof(desc);								// 剪裁区大小
		desc.dwFlags			= DDSD_CAPS | DDSD_BACKBUFFERCOUNT;			// 指定剪裁模式
		desc.dwBackBufferCount	= 1;										// 后(页)备缓冲区的个数，默认为1个
		desc.ddsCaps.dwCaps		= DDSCAPS_PRIMARYSURFACE | DDSCAPS_COMPLEX| DDSCAPS_FLIP;	  // 指定剪裁方法
        
		// 建立主绘图页（也就是前页）
        result = m_pDD7->CreateSurface(&desc, &m_pPSur, NULL);                     
	   	if(result != DD_OK)       
		{
			MessageBox(NULL, "建立主绘图页失败!", NULL, MB_OK);
			return	false;
		}
		m_pPSur->SetClipper(lpDDclip);  //设置剪裁（开始剪裁）

		// 连接后缓冲区（连上后，就可以进行翻页了）
		caps.dwCaps = DDSCAPS_BACKBUFFER;
		result = m_pPSur->GetAttachedSurface(&caps, &m_pBBuf);	

		if(result != DD_OK)                                     
		{
			MessageBox(NULL, "连接后缓冲区失败!", NULL, MB_OK);
			return	false;
		}	
	}
	else
	{	// 窗口模式忽略，在MFC中可使用，但MFC不稳定，不推荐使用
		result = m_pDD7->SetCooperativeLevel(m_hWnd, DDSCL_NORMAL); 
		if(result != DD_OK)
		{
			MessageBox(NULL, "设定程序协调层级失败!", NULL, MB_OK);
		}
		DDSURFACEDESC2 desc;
		memset(&desc,0,sizeof(desc));						
		ZeroMemory(&desc,sizeof(desc));
	
		desc.dwSize				= sizeof(desc);				
		desc.dwFlags			= DDSD_CAPS ;				
	//	desc.dwBackBufferCount	= 1;						
		desc.ddsCaps.dwCaps		= DDSCAPS_PRIMARYSURFACE;	
		result = m_pDD7->CreateSurface(&desc, &m_pPSur, NULL);
		if(result != DD_OK)
		{
			MessageBox(NULL, "建立主绘图页失败!", NULL, MB_OK);
			return	false;
		}

		// 4.创建辅助图面	
		memset(&desc,0,sizeof(desc));
		desc.dwSize=sizeof(desc);
		desc.dwFlags=DDSD_CAPS|DDSD_HEIGHT|DDSD_WIDTH;
		desc.ddsCaps.dwCaps=DDSCAPS_OFFSCREENPLAIN;
		desc.dwWidth =Width;
		desc.dwHeight=Height;

		result = m_pDD7->CreateSurface(&desc,&m_pBBuf,NULL);
		if (FAILED(result))
		{
			MessageBox(NULL, "创建辅助图面失败!", NULL, MB_OK);
			return	false;
		}
		// 3.创建裁剪
		IDirectDrawClipper *lpClipper=NULL;
		result = m_pDD7->CreateClipper(NULL,&lpClipper,NULL);
		if (FAILED(result))
		{
				MessageBox(NULL, "创建裁剪区域失败!", NULL, MB_OK);
				return	false;
		}

		result = lpClipper->SetHWnd(0,hWnd);
		if (FAILED(result))
		{
				MessageBox(NULL, "设置窗口裁剪区域失败!", NULL, MB_OK);
				return	false;
		}


		result = m_pPSur->SetClipper(lpClipper);
		if (FAILED(result))
		{
				MessageBox(NULL, "设置主图面的裁剪区域失败!", NULL, MB_OK);
				return	false;
		}

		lpClipper->Release();

	}
	return true;
}

bool CGraphic::InitOffScreen(LPDIRECTDRAWSURFACE7& oBuffer,DWORD dwWidth,DWORD dwHeight,
		                     bool b_ColorKey,DWORD color)
{

	HRESULT           result;
	memset(&desc,0,sizeof(desc));	
	desc.dwSize			= sizeof(desc);
	desc.dwFlags		= DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH;				 
	desc.ddsCaps.dwCaps	= DDSCAPS_OFFSCREENPLAIN  | DDSCAPS_SYSTEMMEMORY ;	 
		
	desc.dwWidth		= dwWidth; 
	desc.dwHeight		= dwHeight; 

	result = m_pDD7->CreateSurface(&desc, &oBuffer, NULL); 
	if(result != DD_OK )
	{
		MessageBox(NULL, "建立幕后暂存区失败!", NULL,MB_OK);
		return	false;
	}
	if(b_ColorKey)			
	{
    	DDColorKey(oBuffer,color);		
	}
	return true;
}

bool CGraphic::LoadToOffScreen(LPDIRECTDRAWSURFACE7& oBuffer,DWORD dwWidth  ,DWORD dwHeight, 
		                 LPCSTR BitMapFile,bool b_ColorKey,DWORD color)
{
	HDC			    m_hdc;		//一个显示设备句柄
	HDC			    m_hdcImage;	//一个显示设备句柄
	HBITMAP		    m_hBmp;	
	BITMAP		    m_fBmp;	
	DDSURFACEDESC2  ddsd;
	bool		    b_result;
	HRESULT         result;
  
	m_hBmp = (HBITMAP)::LoadImage(NULL, BitMapFile, IMAGE_BITMAP, NULL, NULL 
		                               , LR_LOADFROMFILE|LR_CREATEDIBSECTION);  
	if(NULL == m_hBmp)
	{
		MessageBox(NULL, "读取位图失败!", NULL, MB_OK);
		return	false;
	}

	GetObject(m_hBmp,sizeof(m_fBmp),&m_fBmp);	//为图片分配内存空间
	dwWidth		= (dwWidth  == 0 ? m_fBmp.bmWidth  : dwWidth);		
	dwHeight	= (dwHeight == 0 ? m_fBmp.bmHeight : dwHeight);	


	b_result = InitOffScreen(oBuffer,dwWidth,dwHeight,true,color);
	if( !b_result)//判断创建是否成功
	{
		MessageBox(NULL, "创建离屏缓冲区失败!", NULL, MB_OK);
		return	false;
	}


    m_hdcImage = ::CreateCompatibleDC(NULL);
	if (NULL == m_hdcImage)                 
	{
		MessageBox(NULL,"创建上下文设备出错!",NULL,MB_OK);
		return	false;
	}
	SelectObject(m_hdcImage, m_hBmp);	
	//GetObject(m_hBmp, sizeof(m_fBmp), &m_fBmp);				
	ddsd.dwSize = sizeof(ddsd);			
	oBuffer->GetSurfaceDesc(&ddsd);		
	
	oBuffer->GetDC(&m_hdc);			
	result = oBuffer->GetDC(&m_hdc);	
	if( result != NULL)				
	{
		StretchBlt(m_hdc,      0, 0,   ddsd.dwWidth,   ddsd.dwHeight, 
			       m_hdcImage, 0, 0, m_fBmp.bmWidth, m_fBmp.bmHeight, SRCCOPY);
		
		oBuffer->ReleaseDC(m_hdc);
	}
	
	DeleteDC(m_hdcImage);//删除显示设备

	if( NULL == result)//判断是否加载成功
	{
		return false;
	}

	return true;
}

void CGraphic::BltBBuffer(LPDIRECTDRAWSURFACE7 oBuffer,bool b_ColorKey,int x, int y, int ClipX, int ClipY, int ClipEndX, int CLipEndY)
{
	m_bRect.left = ClipX;
	m_bRect.top = ClipY;
	m_bRect.right = ClipEndX;
	m_bRect.bottom = CLipEndY;
	int nx=x, ny=y;

	

	m_rcRect.left = x;
	m_rcRect.top = y ;
	m_rcRect.right = x + ClipEndX - ClipX;
	m_rcRect.bottom = y + CLipEndY - ClipY;
    // 做相应地抠像，因为屏幕要移出去了。
	if(x < 0)
	{
		m_bRect.left = m_bRect.left + abs(x);
	    m_rcRect.left = 0;
		nx = 0;
	}
	else if(x + (ClipEndX-ClipX) >= int(m_dwWidth))
	{
		m_bRect.right = m_bRect.right - (x + (ClipEndX-ClipX) - m_dwWidth);
        m_rcRect.right = m_dwWidth;
	}
	
	if(y < 0)
	{
		m_bRect.top = m_bRect.top + abs(y);
		m_rcRect.top = 0;
		ny = 0;
	}
	else if(y + (CLipEndY-ClipY) >= int(m_dwHeight))
	{
		m_bRect.bottom = m_bRect.bottom - (y + (CLipEndY-ClipY) - m_dwHeight);
		m_rcRect.bottom = m_dwHeight;
	}
	

	if(b_ColorKey)
	{
		if(m_bfScreen)
			m_pBBuf->BltFast( nx, ny, oBuffer, &m_bRect, DDBLTFAST_WAIT|DDBLTFAST_SRCCOLORKEY);
		else
			m_pBBuf->Blt(&m_rcRect, oBuffer, &m_bRect, DDBLT_KEYSRC|DDBLT_WAIT|DDBLTFAST_SRCCOLORKEY, NULL);//(&rct, surface, NULL, DDBLT_WAIT, NULL));
	}
	else
	{
		if(m_bfScreen)
			m_pBBuf->BltFast( nx, ny, oBuffer, &m_bRect, DDBLTFAST_WAIT);
		else
			m_pBBuf->Blt(&m_rcRect, oBuffer, &m_bRect, (DDBLT_WAIT | DDBLT_KEYSRC), NULL);
	}
}
/*
void CGraphic::CopyToBuffer(LPDIRECTDRAWSURFACE7& SrcBuffer,LPDIRECTDRAWSURFACE7& DestBuffer,
		                                 bool b_ColorKey,int x,int y,RECT m_rect)
{
	m_bRect = m_rect;

	if(b_ColorKey)
	{
		 DestBuffer->BltFast( x, y, SrcBuffer, &m_bRect, 
			                  DDBLTFAST_WAIT|DDBLTFAST_SRCCOLORKEY);
	}
	else
	{
		 DestBuffer->BltFast( x, y, SrcBuffer, &m_bRect, DDBLTFAST_WAIT);
	}
}

void CGraphic:: CopyToBuffer(LPDIRECTDRAWSURFACE7& SrcBuffer,LPDIRECTDRAWSURFACE7& DestBuffer,
		          bool b_ColorKey,float zoomX, float zoomY)
{
	HDC  m_hdc;
	HDC  m_hdcImage;
	int  width = 0, height = 0;
    DDSURFACEDESC2  ddsd;

    ddsd.dwSize = sizeof(ddsd);			
	SrcBuffer->GetSurfaceDesc(&ddsd);
	width  =  ddsd.dwWidth;
    height =  ddsd.dwHeight;
	DestBuffer->GetSurfaceDesc(&ddsd);
	

	SrcBuffer->GetDC(&m_hdc);	
	DestBuffer->GetDC(&m_hdcImage);

	int iOldMode = SetStretchBltMode(m_hdcImage, COLORONCOLOR); 

    StretchBlt(m_hdcImage,0, 0, ddsd.dwWidth, ddsd.dwHeight, 
			      m_hdc ,0, 0, width, height, SRCCOPY);
	SetStretchBltMode(m_hdcImage, iOldMode); 
	
	DestBuffer->ReleaseDC(m_hdcImage);
	SrcBuffer->ReleaseDC(m_hdc);


}
*/

void CGraphic::Flip()
{   
	if(m_pPSur && m_pBBuf)
	{
		if (m_pPSur->IsLost() == DDERR_SURFACELOST)//判断前页是否丢失
		{
			m_pPSur->Restore();//前页重绘
		}

		if (m_pBBuf->IsLost() == DDERR_SURFACELOST)//判断后页是否丢失
		{
			m_pBBuf->Restore();//后页重绘
		}	
	}	

	RECT rect;
    GetWindowRect(m_hWnd, &rect);
    m_pPSur->Blt(&rect,m_pBBuf,NULL,DDBLT_WAIT,NULL);

//	m_pPSur->Flip(NULL, DDFLIP_WAIT);
	
}

/*void CGraphic::Flip(int x,int y, RECT m_rect)
{
	if(m_pPSur && m_pBBuf)
	{
		if (m_pPSur->IsLost() == DDERR_SURFACELOST)//判断前页是否丢失
		{
			m_pPSur->Restore();//前页重绘
		}

		if (m_pBBuf->IsLost() == DDERR_SURFACELOST)//判断后页是否丢失
		{
			m_pBBuf->Restore();//后页重绘
		}	
	}	
	
	
	m_pPSur->BltFast(x,y,m_pBBuf,&m_rect,DDBLTFAST_WAIT);
}
*/


//----------------------------------------------------------------------------------------
//Name: DDColorKey 设置镂空的颜色键码
//Desc: oBuffer 只是对那个缓冲区内进行镂空处理
//
//----------------------------------------------------------------------------------------

void CGraphic::DDColorKey(LPDIRECTDRAWSURFACE7 oBuffer,DWORD color)
{
	m_key.dwColorSpaceHighValue = color;	
	m_key.dwColorSpaceLowValue  = color;	
	oBuffer->SetColorKey(DDCKEY_SRCBLT, &m_key);
}

void CGraphic::ClearBuffer(LPDIRECTDRAWSURFACE7& Buffer)
{
	DDBLTFX ddBltFx;
	ddBltFx.dwSize=sizeof(DDBLTFX);
	ddBltFx.dwFillPixel=0;
	Buffer->Blt(NULL,NULL,NULL,DDBLT_WAIT|DDBLT_COLORFILL,&ddBltFx);
}

//--鼠标拷贝判断
void CGraphic::SetMouseRect(RECT* m_rect, int scWidth, int scHeight, int msWidth, int msHeight)
{
	int mouseX, mouseY;
	if(m_MPos.x > scWidth - msWidth)  //--若鼠标越界则只设置出现在屏幕的区域
	{
		mouseX = scWidth - m_MPos.x;
	}
	else                              //--否则就设置为传进来的图片区域大小
	{
		mouseX = msWidth;
	}

	if(m_MPos.y > scHeight - msHeight)
	{
		mouseY = scHeight - m_MPos.y;
	}
	else
	{
		mouseY = msHeight;
	}
	SetRect(m_rect, 0, 0, mouseX, mouseY);
}

void CGraphic::OutText(LPCSTR str, int x, int y,COLORREF color)
{
	HDC hdc;
	m_pBBuf->GetDC(&hdc);
	SetTextColor(hdc, color);	//文字颜色
	//SetBkColor(hdc, RGB(0, 0, 0));		//背景颜色
	SetBkMode(hdc, TRANSPARENT);		//背景透明
	TextOut(hdc, x, y, str, strlen(str));
	m_pBBuf->ReleaseDC(hdc);
}

// GameTime.h: interface for the CGameTime class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_GAMETIME_H__E21F4529_19F8_4F2E_8B0A_3BB627C8E0AE__INCLUDED_)
#define AFX_GAMETIME_H__E21F4529_19F8_4F2E_8B0A_3BB627C8E0AE__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#include "head.h"


class CGameTime  
{
private:
	__int64    m_start;     //开始的时间
	__int64    m_end;       //结束的时间
	__int64    m_frequency; //计时器频
	 double    m_time;      //得到当前时间

public:
	CGameTime();
	virtual ~CGameTime();
	double     GetTime();

};

#endif // !defined(AFX_GAMETIME_H__E21F4529_19F8_4F2E_8B0A_3BB627C8E0AE__INCLUDED_)

// GameTime.cpp: implementation of the CGameTime class.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "GameTime.h"

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

CGameTime::CGameTime()
{
	QueryPerformanceFrequency((LARGE_INTEGER*)&m_frequency);
}

CGameTime::~CGameTime()
{

}

double CGameTime::GetTime()
{
    QueryPerformanceCounter((LARGE_INTEGER*)&m_start);
	m_time = (double)(m_start) / (double)m_frequency; //将时间转为以秒为单位

	return m_time;
}

#ifndef _HEADER
#define _HEADER

#include <windows.h>      //-- windows函数中的头文件
#include <stdio.h>        //-- c 语言的头文件
#include <ddraw.h>        //-- DirectDraw的函数需要的头文件

//--对应函数调用所需要的静态连接库
#pragma comment (lib,"ddraw.lib")
#pragma comment (lib,"dxguid.lib")
#pragma comment (lib,"winmm.lib")

#define KEYDOWN(vk_code) ((GetAsyncKeyState(vk_code) & 0x8000) ? 1 : 0)
#define KEYUP(vk_code)   ((GetAsyncKeyState(vk_code) & 0x8000) ? 0 : 1)


 #define   SafeRelease(x)   if   (x)   {   x->Release();   x=NULL;   }   

#define  WINDOWS_GAME_WIDTH  800
#define  WINDOWS_GAME_HEIGHT  600

#endif