Boss Bar

i'm trying to send a boss bar as a test but it freezes the client.

Here are the options im setting

PHP:

$bossPacket = new BossEventPacket();
$bossPacket->bossEid = 0;
$bossPacket->eventType = 0; //SHOW
$bossPacket->title = "Wither";
$bossPacket->healthPercent = 1;
$bossPacket->color = 0;
$bossPacket->playerEid = (player eid which i inserted manually, i'll make it automated later)


 

You are not sending bossbar, boss event packet only update it.

 

How do i send it then ?

 

With AddEntityPacket

 

Yeah but what is the minimum amount of code that i need to spawn it? i see BossBarAPI but it sets lots of seemingly useless metadata

 

I don't think you can spawn without it

 

I'm not sure about this, but I think you only want this
Entity:ATA_LEAD_HOLDER_EID
Entity:ATA_NAMETAG
in metadata to create the bossbar

 

You did it right, let me rewrite it a bit.

PHP:

$pk = new BossEventPacket();
$pk->bossEid = $bossEid;
$pk->eventType = BossEventPacket::TYPE_SHOW;
$pk->healthPercent = 1;
$pk->title = "";


$bossEid has to be the Entity::getId() of any entity provided it is spawned to the player. But since you wanted minimal code, you can send an AddEntityPacket() to the client.

PHP:

$pk = new AddEntityPacket();
$pk->type = Entity::ZOMBIE;
$pk->entityRuntimeId = $bossEid = Entity::$entityCount++:
$pk->position = new Vector3();
$pk->metadata[Entity::DATA_NAMETAG] = [Entity::DATA_TYPE_STRING, "Title for the bossbar"];


I'd say send the AddEntityPacket before BossEventPacket, but it should work irrespective of the order of packets.

P.S: BossEventPacket->bossEid and BossEventPacket->eventType are mandatory fields. The rest of the fields depend upon the value of BossEventPacket->eventType. For example, in your case (BossEventPacket::TYPE_SHOW), the other mandatory fields would be BossEventPacket->title and BossEventPacket->healthPercent.

Check BossEventPacket::encodePayload() for mandatory fields on the basis of BossEventPacket::$eventType.