第9月第6天 push pop动画 生成器模式(BUILDER)

1.

 

https://github.com/MichaelHuyp/QQNews

 

2.生成器模式(BUILDER)

 

class MazeBuilder 
{
public：
    virtual void BuildMaze() {}
    virtual void BuildRoom(int room) {}
    virtual void BuildDoor(int roomFrom, int roomTo) {}

    virtual Maze* GetMaze() { return 0;}
protected:
    MazeBuilder();
}

class StandardMazeBuilder : public MazeBuilder {

public:

    StandardMazeBuilder();

/*

*/

    virtual void BuildMaze();

    virtual void BuildRoom(int);

    virtual void BuildDoor(int, int);

/*

*/

    virtual Maze* GetMaze();

private:

    Direction CommonWall(Room*, Room*);

    Maze* _currentMaze;

};//StandardMazeBuilder是ConcreteBuilder，提供部件的具体构造代码

Maze* MazeGame::CreateMaze (MazeBuilder& builder) {

    builder.BuildMaze();

    builder.BuildRoom(1);

    builder.BuildRoom(2);

    builder.BuildDoor(1, 2);

    return builder.GetMaze();

}//CreateMaze是导向器，调用生成器的抽象接口完成产品的构造过程。

//下面代码描述产品的构造过程

Maze* maze;//最终的产品

MazeGame game;//Director，导航者

StandardMazeBuilder builder;//ConcreteBuilder，实际的构造类

game.CreateMaze(builder);//开始装配

maze = builder.GetMaze();//获取装配后的产品

 

http://blog.csdn.net/zs634134578/article/details/17853433

 

StandardMazeBuilder::StandardMazeBuilder()
    : m_currentMaze(0)
{
}

void StandardMazeBuilder::BuildMaze()
{
    m_currentMaze = new Maze();
}

void StandardMazeBuilder::BuildRoom(int roomNo)
{
    if (m_currentMaze->RoomNo(roomNo) == NULL)
    {
        Room *room = new Room(roomNo);

        room->SetSide(Room::East, new Wall());
        room->SetSide(Room::South, new Wall());
        room->SetSide(Room::West, new Wall());
        room->SetSide(Room::North, new Wall());

        m_currentMaze->AddRoom(room);
    }
}

void StandardMazeBuilder::BuildDoor(int roomFrom, int roomTo)
{
    Room *r1 = m_currentMaze->RoomNo(roomFrom);
    Room *r2 = m_currentMaze->RoomNo(roomTo);

    Door *door = new Door(r1, r2);

    r1->SetSide(CommononWall(r1, r2), door);
    r2->SetSide(CommononWall(r2, r1), door);
}

Room::Direction StandardMazeBuilder::CommononWall(Room *from, Room *to)
{
}

https://github.com/e5MaxSpace/DesignPatterns