@Override
public void despawnFrom(Player player) {
    if (this.hasSpawned.containsKey(player.getLoaderId())) {

        RemoveEntityPacket pk = new RemoveEntityPacket();
        pk.entityRuntimeId = this.getId();
        player.dataPacket(pk);
        this.hasSpawned.remove(player.getLoaderId());
    }
}
 

public void despawnFrom(Player player) {
    if (this.hasSpawned.containsKey((int) player.getLoaderId())) {
        RemoveEntityPacket pk = new RemoveEntityPacket();
        pk.entityRuntimeId = this.getId();
        player.dataPacket(pk);
        this.hasSpawned.remove((int) player.getLoaderId());
    }
}
 

@Override
public void despawnFrom(Player player) {
    if (this.hasSpawned.containsKey(player.getLoaderId())) {

        RemoveEntityPacket pk = new RemoveEntityPacket();
        pk.eid = this.getId();
        player.dataPacket(pk);
        this.hasSpawned.remove(player.getLoaderId());
    }
}
 

@Override
public void despawnFrom(Player player) {
    if (this.hasSpawned.containsKey(player.getLoaderId())) {

        RemoveEntityPacket pk = new RemoveEntityPacket();
        pk.eid = this.getId();
        player.dataPacket(pk);
        this.hasSpawned.remove(player.getLoaderId());
    }
}
 

private void registerPackets() {
    this.packetPool = new Class[256];


    this.registerPacket(ProtocolInfo.ADD_BEHAVIOR_TREE_PACKET, AddBehaviorTreePacket.class);//new
    this.registerPacket(ProtocolInfo.ADD_ENTITY_PACKET, AddEntityPacket.class);
    this.registerPacket(ProtocolInfo.ADD_ITEM_ENTITY_PACKET, AddItemEntityPacket.class);
    this.registerPacket(ProtocolInfo.ADD_PAINTING_PACKET, AddPaintingPacket.class);
    this.registerPacket(ProtocolInfo.ADD_PLAYER_PACKET, AddPlayerPacket.class);
    this.registerPacket(ProtocolInfo.ADVENTURE_SETTINGS_PACKET, AdventureSettingsPacket.class);
    this.registerPacket(ProtocolInfo.ANIMATE_PACKET, AnimatePacket.class);
    this.registerPacket(ProtocolInfo.AVAILABLE_COMMANDS_PACKET, AvailableCommandsPacket.class);
    this.registerPacket(ProtocolInfo.BATCH_PACKET, BatchPacket.class);
    this.registerPacket(ProtocolInfo.BLOCK_ENTITY_DATA_PACKET, BlockEntityDataPacket.class);
    this.registerPacket(ProtocolInfo.BLOCK_EVENT_PACKET, BlockEventPacket.class);
    this.registerPacket(ProtocolInfo.BLOCK_PICK_REQUEST_PACKET, BlockPickRequestPacket.class);
    this.registerPacket(ProtocolInfo.BOOK_EDIT_PACKET, BookEditPacket.class);//new
    this.registerPacket(ProtocolInfo.BOSS_EVENT_PACKET, BossEventPacket.class);
    this.registerPacket(ProtocolInfo.CAMERA_PACKET, CameraPacket.class);//new
    this.registerPacket(ProtocolInfo.CHANGE_DIMENSION_PACKET, ChangeDimensionPacket.class);
    this.registerPacket(ProtocolInfo.CHUNK_RADIUS_UPDATED_PACKET, ChunkRadiusUpdatedPacket.class);
    this.registerPacket(ProtocolInfo.CLIENTBOUND_MAP_ITEM_DATA_PACKET, ClientboundMapItemDataPacket.class);
    this.registerPacket(ProtocolInfo.COMMAND_BLOCK_UPDATE_PACKET, CommandBlockUpdatePacket.class);//new
    this.registerPacket(ProtocolInfo.COMMAND_REQUEST_PACKET, CommandRequestPacket.class);
    this.registerPacket(ProtocolInfo.CONTAINER_CLOSE_PACKET, ContainerClosePacket.class);
    this.registerPacket(ProtocolInfo.CONTAINER_OPEN_PACKET, ContainerOpenPacket.class);
    this.registerPacket(ProtocolInfo.CONTAINER_SET_DATA_PACKET, ContainerSetDataPacket.class);
    this.registerPacket(ProtocolInfo.CRAFTING_DATA_PACKET, CraftingDataPacket.class);
    this.registerPacket(ProtocolInfo.CRAFTING_EVENT_PACKET, CraftingEventPacket.class);
    this.registerPacket(ProtocolInfo.DISCONNECT_PACKET, DisconnectPacket.class);
    this.registerPacket(ProtocolInfo.ENTITY_EVENT_PACKET, EntityEventPacket.class);
    this.registerPacket(ProtocolInfo.ENTITY_FALL_PACKET, EntityFallPacket.class);
    this.registerPacket(ProtocolInfo.EXPLODE_PACKET, ExplodePacket.class);
    this.registerPacket(ProtocolInfo.FULL_CHUNK_DATA_PACKET, FullChunkDataPacket.class);
    this.registerPacket(ProtocolInfo.GAME_RULES_CHANGED_PACKET, GameRulesChangedPacket.class);
    this.registerPacket(ProtocolInfo.GUI_DATA_PICK_ITEM_PACKET, GUIDataPickItemPacket.class);//new
    this.registerPacket(ProtocolInfo.HURT_ARMOR_PACKET, HurtArmorPacket.class);
    this.registerPacket(ProtocolInfo.INTERACT_PACKET, InteractPacket.class);
    this.registerPacket(ProtocolInfo.INVENTORY_CONTENT_PACKET, InventoryContentPacket.class);
    this.registerPacket(ProtocolInfo.INVENTORY_SLOT_PACKET, InventorySlotPacket.class);
    this.registerPacket(ProtocolInfo.INVENTORY_TRANSACTION_PACKET, InventoryTransactionPacket.class);
    this.registerPacket(ProtocolInfo.ITEM_FRAME_DROP_ITEM_PACKET, ItemFrameDropItemPacket.class);
    this.registerPacket(ProtocolInfo.LEVEL_EVENT_PACKET, LevelEventPacket.class);
    this.registerPacket(ProtocolInfo.LEVEL_SOUND_EVENT_PACKET, LevelSoundEventPacket.class);
    this.registerPacket(ProtocolInfo.LOGIN_PACKET, LoginPacket.class);
    this.registerPacket(ProtocolInfo.MAP_INFO_REQUEST_PACKET, MapInfoRequestPacket.class);
    this.registerPacket(ProtocolInfo.MOB_ARMOR_EQUIPMENT_PACKET, MobArmorEquipmentPacket.class);
    this.registerPacket(ProtocolInfo.MOB_EQUIPMENT_PACKET, MobEquipmentPacket.class);
    this.registerPacket(ProtocolInfo.MODAL_FORM_REQUEST_PACKET, ModalFormRequestPacket.class);//new
    this.registerPacket(ProtocolInfo.MODAL_FORM_RESPONSE_PACKET, ModalFormResponsePacket.class);//new
    this.registerPacket(ProtocolInfo.MOVE_ENTITY_PACKET, MoveEntityPacket.class);
    this.registerPacket(ProtocolInfo.MOVE_PLAYER_PACKET, MovePlayerPacket.class);
    this.registerPacket(ProtocolInfo.NPC_REQUEST_PACKET, NPCRequestPacket.class);//new
    this.registerPacket(ProtocolInfo.PLAYER_ACTION_PACKET, PlayerActionPacket.class);
    this.registerPacket(ProtocolInfo.PLAYER_HOTBAR_PACKET, PlayerListPacket.class);
    this.registerPacket(ProtocolInfo.PLAYER_INPUT_PACKET, PlayerInputPacket.class);
    this.registerPacket(ProtocolInfo.PLAYER_LIST_PACKET, PlayerListPacket.class);
    this.registerPacket(ProtocolInfo.PLAYER_SKIN_PACKET, PlayerSkinPacket.class);//new
    this.registerPacket(ProtocolInfo.PLAY_SOUND_PACKET, PlaySoundPacket.class);
    this.registerPacket(ProtocolInfo.PLAY_STATUS_PACKET, PlayStatusPacket.class);
    this.registerPacket(ProtocolInfo.REMOVE_ENTITY_PACKET, RemoveEntityPacket.class);
    this.registerPacket(ProtocolInfo.REQUEST_CHUNK_RADIUS_PACKET, RequestChunkRadiusPacket.class);
    this.registerPacket(ProtocolInfo.RESOURCE_PACK_CHUNK_DATA_PACKET, ResourcePackChunkDataPacket.class);
    this.registerPacket(ProtocolInfo.RESOURCE_PACK_CHUNK_REQUEST_PACKET, ResourcePackChunkRequestPacket.class);
    this.registerPacket(ProtocolInfo.RESOURCE_PACK_CLIENT_RESPONSE_PACKET, ResourcePackClientResponsePacket.class);
    this.registerPacket(ProtocolInfo.RESOURCE_PACK_DATA_INFO_PACKET, ResourcePackDataInfoPacket.class);
    this.registerPacket(ProtocolInfo.RESOURCE_PACKS_INFO_PACKET, ResourcePacksInfoPacket.class);
    this.registerPacket(ProtocolInfo.RESOURCE_PACK_STACK_PACKET, ResourcePackStackPacket.class);
    this.registerPacket(ProtocolInfo.RESPAWN_PACKET, RespawnPacket.class);
    this.registerPacket(ProtocolInfo.RIDER_JUMP_PACKET, RiderJumpPacket.class);
    this.registerPacket(ProtocolInfo.SERVER_SETTINGS_REQUEST_PACKET, ServerSettingsRequestPacket.class);//new
    this.registerPacket(ProtocolInfo.SERVER_SETTINGS_RESPONSE_PACKET, ServerSettingsResponsePacket.class);//new
    this.registerPacket(ProtocolInfo.SERVER_TO_CLIENT_HANDSHAKE_PACKET, ServerToClientHandshakePacket.class);//new
    this.registerPacket(ProtocolInfo.SET_COMMANDS_ENABLED_PACKET, SetCommandsEnabledPacket.class);
    this.registerPacket(ProtocolInfo.SET_DEFAULT_GAME_TYPE_PACKET, SetDefaultGameTypePacket.class);
    this.registerPacket(ProtocolInfo.SET_DIFFICULTY_PACKET, SetDifficultyPacket.class);
    this.registerPacket(ProtocolInfo.SET_ENTITY_DATA_PACKET, SetEntityDataPacket.class);
    this.registerPacket(ProtocolInfo.SET_ENTITY_LINK_PACKET, SetEntityLinkPacket.class);
    this.registerPacket(ProtocolInfo.SET_ENTITY_MOTION_PACKET, SetEntityMotionPacket.class);
    this.registerPacket(ProtocolInfo.SET_HEALTH_PACKET, SetHealthPacket.class);
    this.registerPacket(ProtocolInfo.SET_PLAYER_GAME_TYPE_PACKET, SetPlayerGameTypePacket.class);
    this.registerPacket(ProtocolInfo.SET_SPAWN_POSITION_PACKET, SetSpawnPositionPacket.class);
    this.registerPacket(ProtocolInfo.SET_TITLE_PACKET, SetTitlePacket.class);
    this.registerPacket(ProtocolInfo.SET_TIME_PACKET, SetTimePacket.class);
    this.registerPacket(ProtocolInfo.SHOW_CREDITS_PACKET, ShowCreditsPacket.class);
    this.registerPacket(ProtocolInfo.SHOW_PROFILE_PACKET, ShowProfilePacket.class);
    this.registerPacket(ProtocolInfo.SPAWN_EXPERIENCE_ORB_PACKET, SpawnExperienceOrbPacket.class);
    this.registerPacket(ProtocolInfo.START_GAME_PACKET, StartGamePacket.class);
    this.registerPacket(ProtocolInfo.STOP_SOUND_PACKET, StopSoundPacket.class);//new
    this.registerPacket(ProtocolInfo.STRUCTURE_BLOCK_UPDATE_PACKET, StructureBlockUpdatePacket.class);//new
    this.registerPacket(ProtocolInfo.SUB_CLIENT_LOGIN_PACKET, SubClientLoginPacket.class);//new
    this.registerPacket(ProtocolInfo.TAKE_ITEM_ENTITY_PACKET, TakeItemEntityPacket.class);
    this.registerPacket(ProtocolInfo.TELEMETRY_EVENT_PACKET, TelemetryEventPacket.class);//new
    this.registerPacket(ProtocolInfo.TEXT_PACKET, TextPacket.class);
    this.registerPacket(ProtocolInfo.TRANSFER_PACKET, TransferPacket.class);//new
    this.registerPacket(ProtocolInfo.UPDATE_ATTRIBUTES_PACKET, UpdateAttributesPacket.class);//new
    this.registerPacket(ProtocolInfo.UPDATE_BLOCK_PACKET, UpdateBlockPacket.class);
    this.registerPacket(ProtocolInfo.UPDATE_EQUIPMENT_PACKET, UpdateEquipmentPacket.class);//new
    this.registerPacket(ProtocolInfo.UPDATE_TRADE_PACKET, UpdateTradePacket.class);
}