C++设计模式之享元模式

                    pPiece = *it;
                    break;
                }
                bFound = false;
            }
            if (!bFound)
            {
                pPiece = new CGomoku(color);
                m_vecPiece.push_back(pPiece);
            }
        }
        return pPiece;
    }
 
    ~CPieceFactory()
    {
        for (vector<CPiece *>::iterator it = m_vecPiece.begin(); it != m_vecPiece.end(); ++it)
        {
            if (*it != NULL)
            {
                delete *it;
                *it = NULL;
            }
        }
    }
 
private:
    vector<CPiece *> m_vecPiece;
};
 
class CChessboard
{
public:
    void Draw(CPiece *piece)
    {
        if (piece->GetColor())
        {
            cout<<"Draw a White"<<" at ("<<piece->GetPoint().x<<","<<piece->GetPoint().y<<")"<<endl;
        }
        else
        {
            cout<<"Draw a Black"<<" at ("<<piece->GetPoint().x<<","<<piece->GetPoint().y<<")"<<endl;
        }