feat: implemented utility methods for LobbyConnection

Server/src/main/java/uulm/teamname/marvelous/server/lobbymanager/LobbyConnection.java

@@ -1,6 +1,7 @@
 package uulm.teamname.marvelous.server.lobbymanager;
 
 import uulm.teamname.marvelous.gamelibrary.events.Event;
+import uulm.teamname.marvelous.gamelibrary.gamelogic.ParticipantType;
 import uulm.teamname.marvelous.server.lobby.Lobby;
 
 import java.util.HashSet;
@@ -37,6 +38,14 @@ public class LobbyConnection {
         return player2 != null;
     }
 
+    public Participant getPlayer1() {
+        return player1;
+    }
+
+    public Participant getPlayer2() {
+        return player2;
+    }
+
     /**
      * Adds a new player into the player1 slot
      * @param player is the websocket to be added
@@ -106,4 +115,24 @@ public class LobbyConnection {
         // TODO: implement
         MessageRelay.getInstance().broadcastEvents(this, events);
     }
+
+    public void broadcastToAllExcept(Participant except, Event... events) {
+        // TODO: implement
+        var messageRelayInstance = MessageRelay.getInstance();
+        if (except.type == ParticipantType.Spectator) {
+            spectators.stream()
+                    .filter(spectator -> !spectator.equals(except))
+                    .forEach(spectator -> messageRelayInstance.sendMessage(this, spectator, events));
+            messageRelayInstance.sendMessage(this, player1, events);
+            messageRelayInstance.sendMessage(this, player2, events);
+        } else {
+            messageRelayInstance.sendMessage(this, except.equals(player1) ? player2 : player1, events);
+            spectators.forEach(spectator -> messageRelayInstance.sendMessage(this, spectator, events));
+        }
+    }
+
+    /** Kills all connections to client, as well as the lobby */
+    public void terminateConnection() {
+        MessageRelay.getInstance().terminate(this);
+    }
 }