boost.utility的base_from_member

// base_from_member.cpp 
// made by davidsu33
// 2014-9-28

#include "stdafx.h"
#include <boost/utility/base_from_member.hpp>
#include <boost/core/addressof.hpp>

#include <string>
typedef int RGBA;

using namespace std;
//手
class BaseHand
{
public:
	BaseHand(RGBA color)
		:m_rgba(color)
	{

	}
	virtual ~BaseHand(){}
private:
	RGBA m_rgba;
};

//脚
class BaseFoot
{
public:
	BaseFoot(int size, const std::string& style)
		:m_size(size),
		m_style(style){};
	virtual ~BaseFoot(){}
private:
	int m_size;
	std::string m_style;
};

//头
class BaseHead
{
public:
	BaseHead(int width, int height):
	  m_width(width),m_height(height){};
	  virtual ~BaseHead(){}
private:
	int m_width;
	int m_height;
};

//NPC
class GameNPC : public BaseHand,
	public BaseFoot,
	public BaseHead
{
public:
	GameNPC(RGBA rgba, int footsize, const std::string& footstyle,
		int headWidth, int headHeight):
	BaseHand(rgba),BaseFoot(footsize, footstyle),BaseHead(headWidth, headHeight){}
};

//base_from_member
class BFMGameNPC :public boost::base_from_member<BaseHand>,
	boost::base_from_member<BaseFoot>,
	boost::base_from_member<BaseHead>
{
public:
	typedef boost::base_from_member<BaseHand> pbase0_type;
	typedef boost::base_from_member<BaseFoot> pbase1_type;
	typedef boost::base_from_member<BaseHead> pbase2_type;

public:
	BFMGameNPC();
	~BFMGameNPC();
};

BFMGameNPC::BFMGameNPC()
	//简化多参数的继承
	:pbase0_type(1002),
	pbase1_type(2, "pegine"),
	pbase2_type(100, 200)
{

}

BFMGameNPC::~BFMGameNPC()
{

}

int _tmain(int argc, _TCHAR* argv[])
{
	BFMGameNPC bfmnp;
	GameNPC npc(10002, 2, "pengine", 100, 200);

	return 0;
}