Three way handshake implemented client and server side and functioning

Server generates a new Id for connections (Size of connections + 1)
Client now stores an id allocated to it by the server
The id is currently being saved in the clientToServer thread client side

tags: #story[987] #implement

src/main/java/seng302/gameServer/GameState.java

@@ -121,4 +121,14 @@ public class GameState {
             yacht.update(timeInterval);
         }
     }
+
+
+    /**
+     * Generates a new ID based off the size of current players + 1
+     * @return a playerID to be allocated to a new connetion
+     */
+    public static Integer getUniquePlayerID() {
+        // TODO: 22/07/17 wmu16 - This may not be robust enough and may have to be improved on.
+        return yachts.size() + 1;
+    }
 }