public Message onExceptionThrown(Message message, InetSocketAddress destinationAddress) {
boolean gsAvailable = checkBFFailures(destinationAddress);
MessageRequest request = (MessageRequest) message.get("request");
switch (request) {
case disconnectedBF:
if (gsAvailable) return message;
break;
case disconnectedUnit:
if (gsAvailable) return message;
break;
case gameState:
Unit u;
synchronized (this) {
u = units.remove(destinationAddress);
map[u.getX()][u.getY()] = null;
}
Integer[] tempClock = vClock.incrementClock(id);
LogEntry entry =
new LogEntry(tempClock, LogEntryType.DISCONNECTED_UNIT, destinationAddress);
logger.writeAsText(entry, true);
Message replyMessage = new Message();
replyMessage.put("request", MessageRequest.disconnectedUnit);
replyMessage.put("unitAddress", destinationAddress);
replyMessage.put("vclock", tempClock);
synchronizeWithAllBF(replyMessage);
break;
default:
break;
}
return null;
}
private synchronized Message processResponseMessage(Message msg) {
Integer messageID = (Integer) msg.get("serverMessageID");
ActionInfo actionInfo = pendingOwnActions.get(messageID);
InetSocketAddress serverAddress = (InetSocketAddress) msg.get("serverAddress");
Message message = msg.clone();
message.put("request", MessageRequest.SyncActionConfirm);
message.put("serverAddress", new InetSocketAddress(url, port));
message.put("serverMessageID", messageID);
if (actionInfo != null) {
if ((Boolean) msg.get("ack")) {
// System.out.println("[S"+port+"] "+actionInfo.message.get("address")+" ACK TRUE from
// "+serverAddress.getHostName()+":"+serverAddress.getPort()+" Adding info to queue.");
actionInfo.ackReceived.add((InetSocketAddress) msg.get("serverAddress"));
if (actionInfo.ackReceived.size() == battlefields.size() - 1) {
message.put("confirm", true);
Integer[] tempClock = vClock.incrementClock(id);
// System.out.println("<"+url+":"+port+"> Clock added when action is ready to ship -->
// "+toStringArray(tempClock));
message.put("vclock", tempClock);
for (InetSocketAddress address : actionInfo.ackReceived) {
SynchronizedClientSocket clientSocket =
new SynchronizedClientSocket(message, address, this);
clientSocket.sendMessage();
}
ActionInfo removeAction = pendingOwnActions.remove(messageID);
removeAction.timer.cancel();
msg.put("vclock", tempClock);
Message toPlayer = processEvent(message, removeAction);
if (toPlayer != null) {
SynchronizedClientSocket clientSocket =
new SynchronizedClientSocket(
toPlayer, (InetSocketAddress) msg.get("address"), this);
clientSocket.sendMessage();
}
}
} else {
pendingOwnActions.remove(messageID).timer.cancel();
message.put("confirm", false);
SynchronizedClientSocket clientSocket =
new SynchronizedClientSocket(message, serverAddress, this);
clientSocket.sendMessage();
}
} else {
message.put("confirm", false);
SynchronizedClientSocket clientSocket =
new SynchronizedClientSocket(message, serverAddress, this);
clientSocket.sendMessage();
}
return null;
}
private synchronized boolean checkBFFailures(InetSocketAddress destinationAddress) {
Integer failures = battlefields.get(destinationAddress);
if (failures != null) {
if (failures > 1) {
battlefields.remove(destinationAddress);
// Remove all Units connected to this battleField
for (Map.Entry<InetSocketAddress, Unit> entry : units.entrySet()) {
if (entry.getValue().getBattlefieldAddress().equals(destinationAddress)) {
removeUnit(entry.getValue().getX(), entry.getValue().getY());
}
}
Message message = new Message();
message.put("request", MessageRequest.disconnectedBF);
message.put("serverAddress", new InetSocketAddress(url, port));
message.put("vclock", vClock.incrementClock(id));
synchronizeWithAllBF(message);
return false;
} else {
battlefields.put(destinationAddress, failures + 1);
}
}
return false;
}
private Message processEvent(Message msg, ActionInfo removeAction) {
Unit unit = null;
LogEntry entry;
Integer[] tempClock;
switch ((MessageRequest) removeAction.message.get("request")) {
case spawnUnit:
{
// System.out.println("BATTLE FIELD:Spawn" + port);
// System.out.println(battlefields.toString());
Boolean succeded =
this.spawnUnit(
(Unit) msg.get("unit"),
(InetSocketAddress) msg.get("address"),
(Integer) msg.get("x"),
(Integer) msg.get("y"));
if (succeded) {
units.put((InetSocketAddress) msg.get("address"), (Unit) msg.get("unit"));
}
Message reply = new Message();
reply.put("request", MessageRequest.spawnAck);
reply.put("succeded", succeded);
reply.put("gamestate", map);
// Puts position of the unit we are sending to in the map we are sending
Unit u = units.get((InetSocketAddress) msg.get("address"));
reply.put("unit", u);
tempClock = ((Integer[]) msg.get("vclock")).clone();
entry =
new LogEntry(
tempClock,
LogEntryType.SPAWN,
(InetSocketAddress) msg.get("address"),
new Position((Integer) msg.get("x"), (Integer) msg.get("y")));
logger.writeAsText(entry, true);
if (!((InetSocketAddress) msg.get("serverAddress"))
.equals(new InetSocketAddress(url, port))) {
// System.out.println("<"+url+":"+port+"> Spawn will be processed -->
// "+toStringArray(tempClock));
vClock.updateClock(tempClock);
}
return reply;
}
case dealDamage:
{
int x = (Integer) msg.get("x");
int y = (Integer) msg.get("y");
unit = this.getUnit(x, y);
if (unit != null) {
unit.adjustHitPoints(-(Integer) msg.get("damage"));
Unit attackingUnit = (Unit) msg.get("unit");
// System.out.println(attackingUnit);
entry =
new LogEntry(
(Integer[]) msg.get("vclock"),
LogEntryType.ATACK,
(InetSocketAddress) msg.get("address"),
new Position(attackingUnit.getX(), attackingUnit.getY()),
new Position(x, y),
(Integer) msg.get("damage"));
logger.writeAsText(entry, true);
if (!((InetSocketAddress) msg.get("serverAddress"))
.equals(new InetSocketAddress(url, port))) {
vClock.updateClock((Integer[]) msg.get("vclock"));
}
if (unit.getHitPoints() <= 0) {
removeUnit(x, y);
// Log remove unit
// Should we log with same clock as deal damage that cause it?
entry =
new LogEntry(
vClock.getClock(),
LogEntryType.REMOVE,
(InetSocketAddress) msg.get("address"),
new Position((Integer) msg.get("x"), (Integer) msg.get("y")));
logger.writeAsText(entry, true);
}
}
break;
}
case healDamage:
{
int x = (Integer) msg.get("x");
int y = (Integer) msg.get("y");
unit = this.getUnit(x, y);
if (unit != null) unit.adjustHitPoints((Integer) msg.get("healed"));
/* Copy the id of the message so that the unit knows
* what message the battlefield responded to.
*/
Unit attackingUnit = (Unit) msg.get("unit");
entry =
new LogEntry(
(Integer[]) msg.get("vclock"),
LogEntryType.HEAL,
(InetSocketAddress) msg.get("address"),
new Position(attackingUnit.getX(), attackingUnit.getY()),
new Position((Integer) msg.get("x"), (Integer) msg.get("y")),
(Integer) msg.get("healed"));
logger.writeAsText(entry, true);
if (!((InetSocketAddress) msg.get("serverAddress"))
.equals(new InetSocketAddress(url, port))) {
vClock.updateClock((Integer[]) msg.get("vclock"));
}
break;
}
case moveUnit:
{
// System.out.println("BATTLEFIELD: MOVEUNIT");
Unit tempUnit = units.get((InetSocketAddress) msg.get("address"));
int x = tempUnit.getX();
int y = tempUnit.getY();
/*
if(temptUnit == null) {
System.out.println("NULL");
}*/
boolean move = this.moveUnit(tempUnit, (Integer) msg.get("x"), (Integer) msg.get("y"));
if (!move) System.out.println("MOVE CANCELED");
entry =
new LogEntry(
(Integer[]) msg.get("vclock"),
LogEntryType.MOVE,
(InetSocketAddress) msg.get("address"),
new Position(x, y),
new Position((Integer) msg.get("x"), (Integer) msg.get("y")));
logger.writeAsText(entry, true);
if (!((InetSocketAddress) msg.get("serverAddress"))
.equals(new InetSocketAddress(url, port))) {
vClock.updateClock((Integer[]) msg.get("vclock"));
}
/* Copy the id of the message so that the unit knows
* what message the battlefield responded to.
*/
break;
}
default:
break;
}
return null;
}