享元模式设计简单的围棋软件

 

设计一个围棋软件，在系统中只存在一个白棋对象和一个黑棋对象，但是它们可以在棋盘的不同位置显示多次。

 

 

java代码

BlackPiece

public class BlackPiece extends Piece{

    @Override
    public String getColor() {
        // TODO Auto-generated method stub
        return "黑棋";
    }

}

Piece

public abstract class Piece {

    public abstract String getColor();
    public void locate(Location lo) {
    
        System.out.println(this.getColor()+" "+lo.getX()+","+lo.getY());
    }

}

WhitePiece

public class WhitePiece extends Piece{

    @Override
    public String getColor() {
        // TODO Auto-generated method stub
        return "白棋";
    }

}

PieceFactory

public class PieceFatory {

    private static PieceFatory instance=new PieceFatory();
    private static Piece wp=new WhitePiece();
    private static Piece bp=new BlackPiece();
    public PieceFatory() {
        // TODO Auto-generated constructor stub
      //instance=new PieceFatory();
      //Piece wp=new WhitePiece();
      //Piece bp=new BlackPiece();
    }
    public static PieceFatory getInstance() {
        return instance;
    }

    public static Piece getPiece(String color) {
        if(color.equals("白棋")) {
            return wp;
        }else {
            return bp;
        }
    }
}

Location

public class Location {

    private String x;
    private String y;
    public Location(String x,String y) {
        // TODO Auto-generated constructor stub
     this.x=x;
     this.y=y;
    }
    public String getX() {
        return x;
    }
    public String getY() {
        return y;
    }
    public void setX(String x) {
        this.x=x;
    }
    public void setY(String y) {
        this.y=y;
    }

}

Client

public class Client {

    public static void main(String[]args) {
        Piece b1,b2,b3,w1,w2,w3;
        PieceFatory pf;
        pf=PieceFatory.getInstance();
        b1=pf.getPiece("黑棋");
        b2=pf.getPiece("黑棋");
        System.out.println("判断两颗黑棋是否相同："+(b1==b2));
        
        w1=pf.getPiece("白棋");
        w2=pf.getPiece("白棋");
        System.out.println("判断两颗白棋是否相同："+(w1==w2));
        b1.locate(new Location("1","2"));
        b2.locate(new Location("3","2"));
        w1.locate(new Location("10","2"));
        w2.locate(new Location("1","21"));
    }
}

 

 c++代码

#include<iostream>
#include<string>
using namespace std;
class Location {

private: string x;
         string y;
public: Location(string x, string y) {
        // TODO Auto-generated constructor stub
        this->x = x;
        this->y = y;
    }
        string getX() {
        return x;
    }
        string getY() {
        return y;
    }
        void setX(string x) {
        this->x = x;
    }
        void setY(string y) {
        this->y = y;
    }

};

class Piece {

public: virtual string getColor()=0;
        void locate(Location *lo) {

         cout<<this->getColor() << " " <<lo->getX() << "," <<lo->getY()<<endl;
    }

};
class WhitePiece:public Piece{
public: string getColor() {
        // TODO Auto-generated method stub
        return "白棋";
    }

};
class BlackPiece :public Piece{
public: string getColor() {
        // TODO Auto-generated method stub
        return "黑棋";
    }

};

class PieceFatory {

private: //PieceFatory *instance;
         Piece *wp=new WhitePiece() ;
         Piece *bp=new BlackPiece() ;
public: 
        PieceFatory *getInstance() {
            // cout << "     dsv1     " << endl;
        return new PieceFatory();
    }

         Piece *getPiece(char *color) {
        if (strcmp("白棋",color)==0) {
            //cout << 1;
            return wp;
        }
        else {
            return bp;
        }
    }
};
int main() {
        Piece *b1, *b2,  *w1, *w2;
        //cout << "     dsv     " << endl;        
        PieceFatory *pf = new PieceFatory();
        //cout << "     dsv1     " << endl;
        b1 = pf->getPiece("黑棋");
        //cout << "     dsv1     " << endl;
        b2 = pf->getPiece("黑棋");
        //cout << "     dsv1     " << endl;
        cout<<"判断两颗黑棋是否相同：" <<(b1 == b2)<<endl;

        w1 = pf->getPiece("白棋");
        w2 = pf->getPiece("白棋");
        cout<<"判断两颗白棋是否相同：" <<(w1 == w2)<<endl;
        b1->locate(new Location("1", "2"));
        b2->locate(new Location("3", "2"));
        //cout << 1;
        w1->locate(new Location("10", "2"));
        w2->locate(new Location("1", "21"));
    
}