CODEWITHSUNDEEP
c++objectinstantiation
waas1919
waas1919

Reputation: 2635

C++ - How to instantiate object with constructor private in another class

I have a class Piece which I've put the default constructor has private, because I want to use only a specific constructor when the object is created:

class Piece
{
private:
  Piece();
public:
  Piece (int var1, int var2);
  ~Piece();
}

And now I have a class Game with has a vector of Pieces:

class Game
{
private:
  std::vector<Piece> m_pieces;
public:
  Game();
  ~Game();
  CreatePieces(); //<-- only here, I will create the Piece objects, not in the constructor
}

Now I want to have a class Foo, that contains a Piece:

class Foo
{
private:
  Piece m_piece;//ERROR!!! cannot access private member declared in class 'Piece'
public:
  Foo();
  ~Foo();
}

My question:

Now I need to use the default constructor for the m_piece on the Foo class. But I wanted to avoid that and use as I was using on the Game class.

Is there anyway I can keep my Piece class as it is, and create a Piece object, like in the Foo class, but initialize it with the constructor Piece (int var1, int var2); on my Foo() constructor?

Upvotes: 0

Views: 835

Answers (1)

Jonathan Potter
Jonathan Potter

Reputation: 37192

You can initialise m_piece in the Foo constructor to call a specific constructor, e.g.:

class Foo
{
    Foo() : m_piece(0,0)
    {
    }
}

Upvotes: 7

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