package com.nexfac.manager; import com.comphenix.protocol.PacketType; import com.comphenix.protocol.ProtocolLibrary; import com.comphenix.protocol.events.PacketContainer; import com.comphenix.protocol.wrappers.*; import org.bukkit.Bukkit; import org.bukkit.Location; import org.bukkit.entity.Player; import org.bukkit.plugin.Plugin; import org.bukkit.util.Vector; import java.lang.reflect.InvocationTargetException; import java.util.*; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ThreadLocalRandom; public class FakePlayerManager { private final Plugin plugin; private final Map> activeFakePlayers = new ConcurrentHashMap<>(); private final Map fakePlayerSpawnTimes = new ConcurrentHashMap<>(); private int currentEntityId = 100000; private final boolean useModernSpawn; private static final String[] SKIN_TEXTURES = { "ewogICJ0aW1lc3RhbXAiIDogMTYwNzUxNzY5NjA4OSwKICAicHJvZmlsZUlkIiA6ICJmNTRhOGFhZjY4NmE0ZDUwOGQ1OTJmZTQ4YTAwYjY0YyIsCiAgInByb2ZpbGVOYW1lIiA6ICJ6aWFkODciLAogICJzaWduYXR1cmVSZXF1aXJlZCIgOiB0cnVlLAogICJ0ZXh0dXJlcyIgOiB7CiAgICAiU0tJTiIgOiB7CiAgICAgICJ1cmwiIDogImh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvYjA0ZGRjYWI0OGFkOWY3NjY0OTI4ZjhkZmFkMzI0OGE5Nzk1NDE3MGNjYjQ5M2FiMmEwNDY1OTkzYTg4ODI1OSIKICAgIH0KICB9Cn0=", "ewogICJ0aW1lc3RhbXAiIDogMTYxMTc2NTI0NzQzMCwKICAicHJvZmlsZUlkIiA6ICI3MzgyZGRmYmU0ODU0NTVjODI1ZjkwMGY4OGZkMzJmOCIsCiAgInByb2ZpbGVOYW1lIiA6ICJFdm9sa2VyIiwKICAic2lnbmF0dXJlUmVxdWlyZWQiIDogdHJ1ZSwKICAidGV4dHVyZXMiIDogewogICAgIlNLSU4iIDogewogICAgICAidXJsIiA6ICJodHRwOi8vdGV4dHVyZXMubWluZWNyYWZ0Lm5ldC90ZXh0dXJlLzlhMTg1ZTE2M2NkYWExNjg3YWQ2YzI1YmFlYzZmYTRmZjczY2I0ZmQ2ZmNhMGU5M2Q5ZGUzNzc4YmZjYjMzY2UiCiAgICB9CiAgfQp9", "ewogICJ0aW1lc3RhbXAiIDogMTYwOTA3NzcxMTU3NCwKICAicHJvZmlsZUlkIiA6ICJmMjc0YzRkNjI1MDQ0ZTQxOGVmYmYwNmM3NWIyMDIxMyIsCiAgInByb2ZpbGVOYW1lIiA6ICJIeXBpZ3NlbCIsCiAgInNpZ25hdHVyZVJlcXVpcmVkIiA6IHRydWUsCiAgInRleHR1cmVzIiA6IHsKICAgICJTS0lOIiA6IHsKICAgICAgInVybCIgOiAiaHR0cDovL3RleHR1cmVzLm1pbmVjcmFmdC5uZXQvdGV4dHVyZS9mYzk1NWVjZGM3NjA1OWNmY2NhMGMyZjY3MzVjZTg0ZjQ4NWRmNGNmYzE5MzZlYzc5YzRhZjU0MWNjZDU1ODgzIgogICAgfQogIH0KfQ==" }; public FakePlayerManager(Plugin plugin) { this.plugin = plugin; this.useModernSpawn = detectModernSpawnPacket(); plugin.getLogger().info("Using " + (useModernSpawn ? "modern SPAWN_ENTITY" : "legacy NAMED_ENTITY_SPAWN") + " packet"); } private boolean detectModernSpawnPacket() { try { ProtocolLibrary.getProtocolManager().createPacket(PacketType.Play.Server.NAMED_ENTITY_SPAWN); return false; } catch (Exception e) { return true; } } public void spawnFakePlayer(Player viewer, Location baseLocation) { try { String randomName = generateRandomName(); UUID randomUUID = UUID.randomUUID(); int entityId = getNextEntityId(); Location spawnLocation = calculateSpawnLocation(viewer, baseLocation); String randomTexture = SKIN_TEXTURES[ThreadLocalRandom.current().nextInt(SKIN_TEXTURES.length)]; WrappedGameProfile profile = new WrappedGameProfile(randomUUID, randomName); profile.getProperties().put("textures", new WrappedSignedProperty("textures", randomTexture, "")); PacketContainer addPlayerPacket = ProtocolLibrary.getProtocolManager().createPacket(PacketType.Play.Server.PLAYER_INFO); addPlayerPacket.getPlayerInfoActions().write(0, EnumSet.of(EnumWrappers.PlayerInfoAction.ADD_PLAYER)); List playerInfoDataList = new ArrayList<>(); playerInfoDataList.add(new PlayerInfoData( profile, ThreadLocalRandom.current().nextInt(10, 100), EnumWrappers.NativeGameMode.SURVIVAL, WrappedChatComponent.fromText(randomName) )); addPlayerPacket.getPlayerInfoDataLists().write(1, playerInfoDataList); ProtocolLibrary.getProtocolManager().sendServerPacket(viewer, addPlayerPacket); if (useModernSpawn) { sendModernSpawnPacket(viewer, entityId, randomUUID, spawnLocation); } else { sendLegacySpawnPacket(viewer, entityId, randomUUID, spawnLocation); } sendHeadRotation(viewer, entityId, spawnLocation.getYaw()); sendAnimation(viewer, entityId); FakePlayerData data = new FakePlayerData(entityId, randomUUID, viewer.getUniqueId()); activeFakePlayers.computeIfAbsent(viewer.getUniqueId(), k -> new ArrayList<>()).add(data); fakePlayerSpawnTimes.put(entityId, System.currentTimeMillis()); Bukkit.getScheduler().runTaskLater(plugin, () -> removeFakePlayer(viewer, data), 1L); } catch (Exception e) { plugin.getLogger().severe("Failed to spawn fake player: " + e.getMessage()); e.printStackTrace(); } } private Location calculateSpawnLocation(Player viewer, Location baseLocation) { Location eyeLocation = viewer.getEyeLocation(); Vector direction = eyeLocation.getDirection().normalize(); double distance = 2.5 + (ThreadLocalRandom.current().nextDouble() * 1.5); Location spawnLoc = eyeLocation.clone().add(direction.multiply(distance)); double randomOffsetX = (ThreadLocalRandom.current().nextDouble() - 0.5) * 0.8; double randomOffsetY = (ThreadLocalRandom.current().nextDouble() - 0.5) * 0.6; double randomOffsetZ = (ThreadLocalRandom.current().nextDouble() - 0.5) * 0.8; spawnLoc.add(randomOffsetX, randomOffsetY, randomOffsetZ); Vector toViewer = viewer.getEyeLocation().toVector().subtract(spawnLoc.toVector()); Location facingLocation = spawnLoc.clone().setDirection(toViewer); spawnLoc.setYaw(facingLocation.getYaw()); spawnLoc.setPitch(facingLocation.getPitch()); return spawnLoc; } private void sendLegacySpawnPacket(Player viewer, int entityId, UUID uuid, Location location) throws InvocationTargetException { PacketContainer spawnPacket = ProtocolLibrary.getProtocolManager().createPacket(PacketType.Play.Server.NAMED_ENTITY_SPAWN); spawnPacket.getIntegers().write(0, entityId); spawnPacket.getUUIDs().write(0, uuid); spawnPacket.getDoubles() .write(0, location.getX()) .write(1, location.getY()) .write(2, location.getZ()); spawnPacket.getBytes() .write(0, (byte) ((int) (location.getYaw() * 256.0F / 360.0F))) .write(1, (byte) ((int) (location.getPitch() * 256.0F / 360.0F))); ProtocolLibrary.getProtocolManager().sendServerPacket(viewer, spawnPacket); } private void sendModernSpawnPacket(Player viewer, int entityId, UUID uuid, Location location) throws InvocationTargetException { PacketContainer spawnPacket = ProtocolLibrary.getProtocolManager().createPacket(PacketType.Play.Server.SPAWN_ENTITY); spawnPacket.getIntegers().write(0, entityId); spawnPacket.getUUIDs().write(0, uuid); spawnPacket.getEntityTypeModifier().write(0, org.bukkit.entity.EntityType.PLAYER); spawnPacket.getDoubles() .write(0, location.getX()) .write(1, location.getY()) .write(2, location.getZ()); spawnPacket.getBytes() .write(0, (byte) ((int) (location.getYaw() * 256.0F / 360.0F))) .write(1, (byte) ((int) (location.getPitch() * 256.0F / 360.0F))); ProtocolLibrary.getProtocolManager().sendServerPacket(viewer, spawnPacket); } private void sendHeadRotation(Player viewer, int entityId, float yaw) { try { PacketContainer headRotPacket = ProtocolLibrary.getProtocolManager().createPacket(PacketType.Play.Server.ENTITY_HEAD_ROTATION); headRotPacket.getIntegers().write(0, entityId); headRotPacket.getBytes().write(0, (byte) ((int) (yaw * 256.0F / 360.0F))); ProtocolLibrary.getProtocolManager().sendServerPacket(viewer, headRotPacket); } catch (Exception ignored) { } } private void sendAnimation(Player viewer, int entityId) { try { PacketContainer animPacket = ProtocolLibrary.getProtocolManager().createPacket(PacketType.Play.Server.ANIMATION); animPacket.getIntegers().write(0, entityId); animPacket.getIntegers().write(1, 0); ProtocolLibrary.getProtocolManager().sendServerPacket(viewer, animPacket); } catch (Exception ignored) { } } private void removeFakePlayer(Player viewer, FakePlayerData data) { try { if (!viewer.isOnline()) { activeFakePlayers.remove(viewer.getUniqueId()); fakePlayerSpawnTimes.remove(data.entityId); return; } PacketContainer destroyPacket = ProtocolLibrary.getProtocolManager().createPacket(PacketType.Play.Server.ENTITY_DESTROY); destroyPacket.getIntLists().write(0, Collections.singletonList(data.entityId)); PacketContainer removePlayerPacket = ProtocolLibrary.getProtocolManager().createPacket(PacketType.Play.Server.PLAYER_INFO_REMOVE); removePlayerPacket.getUUIDLists().write(0, Collections.singletonList(data.fakeUUID)); ProtocolLibrary.getProtocolManager().sendServerPacket(viewer, destroyPacket); ProtocolLibrary.getProtocolManager().sendServerPacket(viewer, removePlayerPacket); List playerFakes = activeFakePlayers.get(viewer.getUniqueId()); if (playerFakes != null) { playerFakes.remove(data); } fakePlayerSpawnTimes.remove(data.entityId); } catch (Exception e) { plugin.getLogger().severe("Failed to remove fake player: " + e.getMessage()); } } public boolean isFakePlayer(UUID viewerUUID, int entityId) { List fakes = activeFakePlayers.get(viewerUUID); if (fakes == null) { return false; } return fakes.stream().anyMatch(data -> data.entityId == entityId); } public long getFakePlayerAge(int entityId) { Long spawnTime = fakePlayerSpawnTimes.get(entityId); if (spawnTime == null) { return -1; } return System.currentTimeMillis() - spawnTime; } public void removeAllFakePlayersForViewer(Player viewer) { List fakes = activeFakePlayers.remove(viewer.getUniqueId()); if (fakes != null) { for (FakePlayerData data : new ArrayList<>(fakes)) { try { removeFakePlayer(viewer, data); } catch (Exception ignored) { } } } } private String generateRandomName() { String[] prefixes = {"Pro", "Dark", "Shadow", "Ninja", "King", "Epic", "Fire", "Ice", "Thunder", "Storm", "Blaze", "Phantom"}; String[] suffixes = {"PVP", "YT", "HD", "TTV", "Live", "Gamer", "Pro", "XD", "OP", "GG"}; ThreadLocalRandom random = ThreadLocalRandom.current(); if (random.nextBoolean()) { return prefixes[random.nextInt(prefixes.length)] + suffixes[random.nextInt(suffixes.length)] + random.nextInt(1000); } else { String chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; StringBuilder name = new StringBuilder(); int length = 6 + random.nextInt(5); for (int i = 0; i < length; i++) { name.append(chars.charAt(random.nextInt(chars.length()))); } return name.toString(); } } private synchronized int getNextEntityId() { return currentEntityId++; } public void cleanup() { activeFakePlayers.clear(); fakePlayerSpawnTimes.clear(); } private static class FakePlayerData { final int entityId; final UUID fakeUUID; final UUID viewerUUID; FakePlayerData(int entityId, UUID fakeUUID, UUID viewerUUID) { this.entityId = entityId; this.fakeUUID = fakeUUID; this.viewerUUID = viewerUUID; } } }