In C++, Im trying to make a game board out of a 2d array of Tile objects, A class I made. It looks something like this:

class Board {
private:
    Tile m_board[9][9]
public:
    Board();
    //Constructors, functions, etc
};

class Tile {
private:
    char m_type;
    //other class members, etc
public:
    Tile();
    char getType();
    void activate(); //This does nothing.
};

class BreakTile: public Tile {
public:
    BreakTile();
    void activate(); //This does something.

What I want to happen is that I can go too any tile on the board class, check if it’s a break tile, and if it is, active it. So I have a function in the Board class that looks something like this:

void Board::activate(int y, int x)
{
    if (m_board[y][x].getType() == 'B')
    {
        m_board[y][x].activate();
    }
}

And that can activate BreakTiles. However, all it’s doing is calling the activate function from the tile class – presumably because this is an array of tiles – despite the fact that In the constructor of Board I define some tiles as break tiles so I know the tiles I’m looking at here are break tiles, I just don’t know how to get the computer to recognize that.

I’ve been trying to see if I can somehow cast the tile into a break tile, but I have no idea how I would even begin to do that, I’m fairly new to C++.