import cn.nukkit.network.protocol.SetEntityDataPacket; //导入依赖的package包/类
public void sendData(Player[] players, EntityMetadata data) {
    SetEntityDataPacket pk = new SetEntityDataPacket();
    pk.eid = this.getId();
    pk.metadata = data == null ? this.dataProperties : data;

    for (Player player : players) {
        if (player == this) {
            continue;
        }
        player.dataPacket(pk.clone());
    }
    if (this instanceof Player) {
        pk.eid = 0;
        ((Player) this).dataPacket(pk);
    }
}
 

import cn.nukkit.network.protocol.SetEntityDataPacket; //导入依赖的package包/类
@EventHandler
public void onSendPacket(DataPacketSendEvent event){
	if(this.status == STATUS_ONGOING){
		if(event.getPacket() instanceof SetEntityDataPacket){
			SetEntityDataPacket pk = (SetEntityDataPacket) event.getPacket();
			
			if(pk.eid != 0){
				Player player = event.getPlayer();
				
				this.getServer().getOnlinePlayers().values().forEach((to) -> {
					if(to.getId() == pk.eid){
						pk.metadata.put(new StringEntityData(Entity.DATA_NAMETAG, (this.isColleague(player.getName(), to.getName()) ? TextFormat.GREEN : TextFormat.RED) + "" + to.getName()));
					}
				});
			}
		}
	}
}
 

import cn.nukkit.network.protocol.SetEntityDataPacket; //导入依赖的package包/类
public void sendData(Player player, EntityMetadata data) {
    SetEntityDataPacket pk = new SetEntityDataPacket();
    pk.eid = this.getId();
    pk.metadata = data == null ? this.dataProperties : data;

    player.dataPacket(pk);
}
 

import cn.nukkit.network.protocol.SetEntityDataPacket; //导入依赖的package包/类
public void sendData(Player player, EntityMetadata data) {
    SetEntityDataPacket pk = new SetEntityDataPacket();
    pk.entityRuntimeId = this.getId();
    pk.metadata = data == null ? this.dataProperties : data;

    player.dataPacket(pk);
}
 

import cn.nukkit.network.protocol.SetEntityDataPacket; //导入依赖的package包/类
public void sendData(Player player, EntityMetadata data) {
    SetEntityDataPacket pk = new SetEntityDataPacket();
    pk.eid = player == this ? 0 : this.getId();
    pk.metadata = data == null ? this.dataProperties : data;

    player.dataPacket(pk);
}
 

import cn.nukkit.network.protocol.SetEntityDataPacket; //导入依赖的package包/类
/**
 * Sets the BossBar title by EID
 *
 * @param String title 
 * @param int eid 
 */
public static void sendTitle(Player player, int eid, String title){
	SetEntityDataPacket npk = new SetEntityDataPacket(); // change name of fake wither . bar text
	
	long flags = 0;
	flags |= 1 << Entity.DATA_FLAG_SILENT;
	flags |= 1 << Entity.DATA_FLAG_INVISIBLE;
	flags |= 1 << Entity.DATA_FLAG_NO_AI;
	
	EntityMetadata dataProperties = new EntityMetadata()
			.putLong(Entity.DATA_FLAGS, flags)
			.putShort(Entity.DATA_AIR, 400)
			.putShort(Entity.DATA_MAX_AIR, 400)
			.putLong(Entity.DATA_LEAD_HOLDER_EID, -1)
			.putFloat(Entity.DATA_SCALE, 1f)
			.putString(Entity.DATA_NAMETAG, title)
			.putInt(Entity.DATA_SCALE, 0);
	
	npk.metadata = dataProperties;
	npk.eid = eid;
	player.dataPacket(npk);
	
	BossEventPacket bpk = new BossEventPacket(); // This updates the bar
	bpk.eid = eid;
	bpk.type = 1; // UPDATE
	player.dataPacket(bpk);
}