play.dart

  void play(int gameBtnId){

    if( gameOver ){
      return;
    }

    setState((){

      if( activePlayer.playerHandle == "playerOne" ){

        buttonsList[gameBtnId].text = "X";
        buttonsList[gameBtnId].bg = Colors.red;

        playerOne.playerMoves.add(buttonsList[gameBtnId].id); //add the btn to playerOne's collection
        if( playerWon(playerOne.playerMoves) ){
          print("one wins");
          gameOver = true;
        }


        activePlayer = playerTwo;
        //disable GameBtn
        buttonsList[gameBtnId].enabled = false;



      }
      else if( activePlayer.playerHandle == "playerTwo" ){


        buttonsList[gameBtnId].text = "0";
        buttonsList[gameBtnId].bg = Colors.black;

        playerTwo.playerMoves.add(buttonsList[gameBtnId].id); //add the btn to playerTwo's collection
        if( playerWon(playerTwo.playerMoves)){
          print("two wins");
          gameOver = true;
        }


        activePlayer = playerOne;
        //disable GameBtn
        buttonsList[gameBtnId].enabled = false;
      }

    });

  }