Reverting Packet29DestroyEntity

Hey guys, I working with packets a bit and I came to realize that Packet29DestroyEntity completely removes my mob, how would I make the mob come back/stop sending it?

 

can't you use ProtocolLib to stop the packet..?

 

I believe the opposite of that is the spawn mob packet. Maybe send that to the player? I am not a packet master, maybe Comphenix knows.

 

There might be other ways, but your safest bet is probably to intercept and remove it from the packet queue, like what ProtocolLib does when you cancel a PacketEvent:

Code:java

final int ENTITY_TO_PRESERVE = 10;
 
ProtocolLibrary.getProtocolManager().addPacketListener(new PacketAdapter(this, ConnectionSide.SERVER_SIDE, Packets.Server.DESTROY_ENTITY) {
    @Override
    public void onPacketSending(PacketEvent event) {
        // Check for entity ID
        int[] entities = event.getPacket().getIntegerArrays().read(0);
        List<Integer> list = Lists.newArrayList(Ints.asList(entities));
        list.remove(ENTITY_TO_PRESERVE);
 
        if (list.size() > 0) {
            event.getPacket().getIntegerArrays().write(0, Ints.toArray(list));
        } else {
            event.setCancelled(true);
        }
    }
});

If requiring ProtocolLib is a problem, I recommend using it only when present (soft-depend), and use your on interception method otherwise.

 

Comphenix
Oh I haven't thought about that
Thanks!