private Message readMessage(Player p) {
Message msg = null;
while (msg == null) {
try {
msg = p.readMessage();
if (msg == null) {
Thread.sleep(500);
} else {
System.out.println("Got a message: " + msg.getType());
}
} catch (Exception e) {
}
}
return msg;
}
/** Listening for NavyMessage and verifies the Navy object. */
private boolean readAndValidate(int playerNumber) {
Validator validator = new Validator(SUBMARINES, DESTROYERS, AIRCRAFT_CARRIERS);
Message msg = readMessage(player[playerNumber]);
if (msg.getType().equals("NavyMessage")) {
System.out.println("We have a navy");
NavyMessage navMsg = (NavyMessage) msg;
if (navMsg.getNavy().allSet()) {
System.out.println("allSet");
}
if (validator.validateNavy(navMsg.getNavy())) {
System.out.println("it´s valid");
navy[playerNumber] = navMsg.getNavy();
return true;
} else {
System.out.println("it´s not valid");
return false;
}
} else {
System.out.println("We don´t have a navy");
return false;
}
}
/**
* The game loop. Read messages/getshots and evaluate. Messages are sent to clients(not to the
* ServerAI)
*/
private void enterGameLoop() {
boolean loop = true;
Coordinate shotCoordinate = null;
Ship hitShip = null;
while (loop) {
// reset
isHit = false;
isSunk = false;
grantTurn = false;
finished = false;
hitShip = null;
shotCoordinate = null;
// Read message
if (player[currentPlayer] != null) { // an actual player
Message msg = readMessage(player[currentPlayer]);
Shot shotMsg = null;
if (msg.getType().equals("Shot")) {
System.out.println("received Shot");
shotMsg = (Shot) msg;
shotCoordinate = shotMsg.getCoordinate();
}
} else { // get shot coordinate from ServerAI
if (serverAI != null) {
shotCoordinate = serverAI.shoot();
System.out.println("server generated shot");
}
}
// do we have a Coordinate?
if (shotCoordinate != null) {
System.out.println(
"X: "
+ Integer.toString(shotCoordinate.getX())
+ " Y: "
+ Integer.toString(shotCoordinate.getY()));
// shoot the other players navy
hitShip = navy[otherPlayer].shot(shotCoordinate);
// a hit
if (hitShip != null) {
isHit = true;
System.out.println(hitShip.getName());
if (!hitShip.isSunk()) {
hitShip = null; // don´t send Ship unless sunk
} else {
System.out.println("sunk");
isSunk = true;
// check if won
if (navy[otherPlayer].allGone()) {
finished = true;
}
}
}
// no hit
else {
System.out.println("Let the other one fire");
// if miss let the other one fire
grantTurn = true;
}
// Tell players if it´s a hit?
// send hitMessage to currentPlayer
if (player[currentPlayer] != null) {
player[currentPlayer].sendMessage(new HitMessage(isHit, shotCoordinate, isSunk, hitShip));
}
// send NavyMessage to otherPlayer
if (player[otherPlayer] != null) {
player[otherPlayer].sendMessage(new NavyMessage(navy[otherPlayer], grantTurn));
}
if (finished) {
if (player[currentPlayer] != null) {
player[currentPlayer].sendMessage(new FinishedMessage(true, navy[currentPlayer]));
}
// send hitMessage to otherPlayer
if (player[otherPlayer] != null) {
player[otherPlayer].sendMessage(new FinishedMessage(false, navy[otherPlayer]));
}
loop = false;
}
// if otherPlayer was granted next turn, Switch player
if (grantTurn) {
System.out.println("Switching player");
switchPlayer();
}
} else { // the message received was of wrong type
if (player[currentPlayer] != null) {
player[currentPlayer].sendMessage(new ValidationMessage(false));
}
}
} // while end
}