How can I intercept a velocity packet from the server?

[ghost]

Can I listen for a setVelocity packet from the server?

And check the vector that the server is telling the bot to set its velocity to?

[rom1504]

the velocity is already available as bot.entity.velocity

[ghost]

@rom1504 isn't that a client-side thing?

I am specifically interested in intercepting the knockback package sent by the server.

I'm assuming the server's plugins use Bukkit's Player#setVelocity(Vector) to tell the player how they should be knocked back.

I'd like to be able to add a listener for the packet generated by this to see the values the server plugins are telling my bot to set its velocity to.

[rom1504]

No it's not, that value is set by the entity_velocity packet which mineflayer listen on to set bot.entity.velocity

On Mon, Nov 12, 2018, 03:08 George notifications@github.com wrote:

@rom1504 https://github.com/rom1504 isn't that a client-side thing?

I am specifically interested in intercepting the knockback package sent by the server.

I'm assuming the server's plugins use Bukkit's Player#setVelocity(Vector) to tell the player how they should be knocked back.

I'd like to be able to add a listener for the packet generated by this to see the values the server plugins are telling my bot to set its velocity to.

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[ghost]

@rom1504 is there an event that gets fired when the server changes that value?

Also, I couldn't find any documentation on it. Entity#velocity is an empty section in the documentation.

Do you know what "type" bot.entity.velocity has?

[ghost]

Am I allowed to access the bot._client object from my own code? it looks kind of sneaky with that underscore

bot._client.on('entity_velocity', (packet) => {
    // entity velocity
    const entity = fetchEntity(packet.entityId)
    const notchVel = new Vec3(packet.velocityX, packet.velocityY, packet.velocityZ)
    entity.velocity.update(conv.fromNotchVelocity(notchVel))
})

[rom1504]

You can, and if you manage to get something useful that mineflayer doesn't currently provide, please pr it in mineflayer code so everybody can use it ;)

On Mon, Nov 12, 2018, 10:24 George notifications@github.com wrote:

Am I allowed to access the bot._client object from my own code? it looks kind of sneaky with that underscore

bot._client.on('entity_velocity', (packet) => { // entity velocity const entity = fetchEntity(packet.entityId) const notchVel = new Vec3(packet.velocityX, packet.velocityY, packet.velocityZ) entity.velocity.update(conv.fromNotchVelocity(notchVel)) })

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