The Castle On The Hill (day 1) [SLiSW]

/*This is the bonus problem, because is a extra of the first problem. Big problem, but not so hard. I like it!*/

class TicTacToe {
    var winner = -1;
    var board = Array(
        Array(-1,-1,-1),
        Array(-1,-1,-1),
        Array(-1,-1,-1)
    );
    println("Inicio do jogo!");

    def played(column: Int, line: Int, player: Int) : Int = {
        if(board(line)(column) != -1) {
            println("Already set!");
            return 2;
        }
        else {
            board(line)(column) = player;
            return checkBoard();
        }
    }

    def seeGame() {
        for(l <- 0 until 3) {
            for(c <- 0 until 3) {
                if(board(l)(c) == 1) {
                    print("X ");
                }
                else if(board(l)(c) == 0) {
                    print("0 ");
                }
                else {
                    print("_ ");
                }
            }
            print("\n");
        }
    }

    def checkBoard(): Int = {
        for(i <- 0 until 3) {
            if(board(i)(0) != -1) {
                if(board(i)(0) == board(i)(1) && board(i)(1) == board(i)(2)) {
                    println("There is a winner! (line)");
                    return 1;
                }
            }
        }
        for(i <- 0 until 3) {
            if(board(0)(i) != -1) {
                if(board(0)(i) == board(1)(i) && board(1)(i) == board(2)(i)) {
                    println("There is a winner! (column)");
                    return 1;
                }
            }
        }
        if(board(0)(0) == board(1)(1) && board(1)(1) == board(2)(2) && board(0)(0) != -1) {
            println("There is a winner! (Diagonal 1)");
            return 1;
        }
        if(board(0)(2) == board(1)(1) && board(1)(1) == board(2)(0) && board(0)(2) != -1) {
            println("There is a winner! (Diagonal 2)");
            return 1;
        }
        return 0;
    }
}

val myTicTacToe = new TicTacToe
var player = 0;
var play = 0;
var c = 0;
var l = 0;
var ttt = 0;

for(j <- 0 until 9 if ttt != 1) {
    printf("Time to player %d choose!\n", player + 1);

    do {
        print("Play (1) or see the game (0) ? ");
        play = io.StdIn.readInt();
        if(play == 0) {
            //show game
            myTicTacToe.seeGame();
        }
    }while(play == 0);

    do {
        print("Write the column number: ");
        c = io.StdIn.readInt();
        print("Write the line number: ");
        l = io.StdIn.readInt();

        ttt = myTicTacToe.played(c-1, l-1, player);

    }while(ttt == 2);

    player = player ^ 1;
}
println("End of the game!");