How can I send Animation-Packet with ProtocolLib in Spigot?

Question

I want to show a damage animation on a entity without damage. NOT:

entity.damage(2);

and then

public void onEntityDamage(EntityDamageEvent event) {
    event.setDamage(0);

more like that:

entity.setHealth(entity.getHealth - 2);
"Send a packet to Player Damage Animation IF POSSIBLE WITH ProtocolLib"

Elikill58 · Accepted Answer · 2022-02-03T17:05:50.503

3

The method Player.damage method to make everything as "normal".

If you want to send your own packet, yous should use the PacketPlayOutAnimation, with the value 1 (Why?)

For 1.16 and lower:

import net.minecraft.server.MC_VERSION.PacketPlayOutAnimation;

EntityPlayer ep = ((CraftPlayer) p).getHandle();
ep.playerConnection.sendPacket(new PacketPlayOutAnimation(ep, 1));

For 1.17 and more:

import net.minecraft.network.protocol.game.PacketPlayOutAnimation;

EntityPlayer ep = ((CraftPlayer) p).getHandle();
ep.b.sendPacket(new PacketPlayOutAnimation(ep, 1));

Here is a version with import of direct minecraft version. You can use reflection to use those NMS for all versions.

Or with ProtocolLib, it seems to be something like that:

PacketContainer packetContainer = protocolManager.createPacket(Play.Server.ANIMATION);
packetContainer.getIntegers().write(0, entityId);
packetContainer.getIntegers().write(0, 1);
manager.sendServerPacket(p, packetContainer); // seems to be how you send packet

More informations about the packet in ProtocolLib here

edited Feb 03 '22 at 17:05

answered Feb 03 '22 at 14:10

Elikill58

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In this case I get this error: com.comphenix.protocol.reflect.FieldAccessException: No field with type byte exists in class PacketPlayOutAnimation – Undercraft_CR Feb 03 '22 at 14:34
Well, no there is no stacktrace, but nothing happens. No damage animation :( – Undercraft_CR Feb 03 '22 at 15:34
The problem. I coding a Weapon plugin. And the weapon shoot snowballs. And if use player.damage(2): When the snowball reach the target the target get damage the damage animation plays. And if while the damage animation run a snowball reach the target also the damage dont arrive – Undercraft_CR Feb 03 '22 at 15:51
I dont understand sorry – Undercraft_CR Feb 03 '22 at 15:56
No, I can also manage this without ProtocolLib – Undercraft_CR Feb 03 '22 at 16:04
My IDE means "Cannot resolve symbol 'playerConnection'" – Undercraft_CR Feb 03 '22 at 16:32
newest paper version: 1.18.1 – Undercraft_CR Feb 03 '22 at 16:48
Ok, the answer was working from 1.8 to 1.16. I just update the answer for 1.18. Also, I removed some comment. – Elikill58 Feb 03 '22 at 17:06

How can I send Animation-Packet with ProtocolLib in Spigot?

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