Project 6: Jogo da Velha

We make a network game of Tick-Tack-Toe, Jogo da Velha. The server starts and waits for a connect. The first letter sent by the client is X or O, meaning that it wants to play X or O. Server responds OK. Then the first player send m n, where m is 1-3 and n is 1-3, the row and column of where to mark. The second player responds m n. Until one sends a 0 0 and the game ends.

After each move, print out the game board: 


     | X |
  ---+---+---
   O | X |
  ---+---+---
     | O |

move (row col)?

Protocol

We decided upon the following protocol for our client/server game. Each message is a single char followd by a newline (using println and flush). Characters 1, 2, ..., 9 are the board positions. Character 0 is reset. WHen in trouble, send a 0. Client sends an X or O (the lettter) to begin a game. In response to an X, server sends a *; in response to an O server sends 1-9 the first move. 
   Client     Server
        'X' ->
       <- '*'
         n  ->
       <-  n
        ...
        '0' ->
       <- '0'

        'O' ->
       <-  n
         n  ->

        'Q' ->