///////    TicStgGame.java    ///////

public class TicStgGame extends TicGame
{
    public TicStgGame(TicBoard b)
    { super(b);
      stg = new TicStrategy();  // default strategy
    } 

    public TicStgGame(TicBoard b, TicStrategy s)
    { super(b); stg = s; } 

    protected TicStgGame() { }

    public void strategy(TicStrategy s)
    { stg = s; }    // set new strategy

// New definition using strategy
    public int genMove(boolean player)
    {   int self, opponent;
        if ( ended() ) return NOMOVE;
        if (player == PLAYER_X) 
        {  self = cross; opponent = circle; }
        else
        {  self = circle; opponent = cross; }
        return stg.move(self, opponent);
    }

    protected TicStrategy stg;      // game strategy
}