Use entity (!)

клиент шлет этот пакет только при использовании пр.кнопки мыши

core/src/main/java/mc/core/player/InMemoryPlayerManager.java

@@ -62,6 +62,13 @@ public class InMemoryPlayerManager implements PlayerManager, Runnable {
                 .findFirst();
     }
 
+    @Override
+    public Optional<Player> getPlayerById(final int id) {
+        return players.stream()
+                .filter(player -> player.getId() == id)
+                .findFirst();
+    }
+
     @Override
     public List<Player> getPlayers() {
         return players.stream().filter(Player::isOnline).collect(Collectors.toList());

core/src/main/java/mc/core/player/PlayerManager.java

@@ -15,6 +15,7 @@ public interface PlayerManager {
     void joinServer(Player player);
     void leftServer(Player player);
     Optional<Player> getPlayer(String name);
+    Optional<Player> getPlayerById(int id);
     List<Player> getPlayers();
     int getCountOnlinePlayers();
     NetChannel getBroadcastChannel();