Main.java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Date;

/**
 * Starts the game for one client.
 * 
 * Note:
 * 		Use the verbose flag for outputting game information.
 * 		Use the fast flag for using 100ms move deadline instead of 1000ms.
 * 		Use the init flag if you want this client to initialise the game, that
 * 		is, send a starting board without moving for the other client to move
 * 		first.
 */
public class Main {

  public static void main(String[] args) throws IOException {
    /* Parse parameters */
    boolean init = false;
    boolean verbose = false;
    boolean fast = false;

    for (int i = 0; i < args.length; ++i) {
      String param = args[i];

      if (param.equals("init") || param.equals("i")) {
        init = true;
      } else if (param.equals("verbose") || param.equals("v")) {
        verbose = true;
      } else if (param.equals("fast") || param.equals("f")) {
        fast = true;
      } else {
        System.err.println("Unknown parameter: '" + args[i] + "'");
        return;
      }
    }

    /**
     * Start the game by sending the starting board without moves
     * if the parameter "init" is given
     */
    if (init) {
      String message = new GameState().toMessage();
      //System.err.println("Sending initial board: '" + message + "'");
      System.out.println(message);
    }

    Player player = new Player();

    String input_message;
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    while ((input_message = br.readLine()) != null) {
      /* Deadline is one second from when we receive the message */
      Deadline deadline = new Deadline(Deadline.getCpuTime() + (fast ? (long) 1e8 : (long) 1e9));

      /* Get game state from standard input */
      //System.err.println("Receiving: '" + input_message + "'");
      GameState input_state = new GameState(input_message);

      /* See if we would produce the same message */
      if (!input_state.toMessage().equals(input_message)) {
        System.err.println("*** ERROR! ***");
        System.err.println("Interpreted: '" + input_message + "'");
        System.err.println("As:      '" + input_state.toMessage() + "'");
        System.err.println(input_state.toString(input_state.getNextPlayer()));
        assert(false);
      }

      /* Print the input state */
      if (verbose) {
        System.err.println(input_state.toMessage());
        System.err.println(input_state.toString(input_state.getNextPlayer()));
      }

      /* Quit if this is end of game */
      if (input_state.getMove().isEOG()) {
        break;
      }

      /* Figure out the next move */
      GameState output_state = player.play(input_state, deadline);

      /* Crash if deadline has been exceeded */
      if (deadline.timeUntil() < 0) {
        System.exit(152);
      }

      /* Print the output state */
      if (verbose) {
        System.err.println(output_state.toMessage());
        System.err.println(output_state.toString(input_state.getNextPlayer()));
      }

      /* Send the next move */
      String output_message = output_state.toMessage();
      
      //System.err.println("Sending: '" + output_message + "'");
      System.out.println(output_message);

      /* Quit if this is end of game */
      if (output_state.getMove().isEOG()) {
        break;
      }
    }
  }
}