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use crate::mc_buf::{McBufReadable, McBufWritable, Readable, Writable};
use azalea_core::resource_location::ResourceLocation;
use packet_macros::{GamePacket, McBuf};
use std::io::{Read, Write};
use uuid::Uuid;
#[derive(Clone, Debug, McBuf, GamePacket)]
pub struct ClientboundUpdateAttributesPacket {
#[var]
pub entity_id: u32,
pub attributes: Vec<AttributeSnapshot>,
}
#[derive(Clone, Debug, McBuf)]
pub struct AttributeSnapshot {
pub attribute: ResourceLocation,
pub base: f64,
pub modifiers: Vec<Modifier>,
}
#[derive(Clone, Debug, McBuf)]
pub struct Modifier {
pub uuid: Uuid,
pub amount: f64,
pub operation: u8,
}
#[derive(Clone, Debug, Copy)]
enum Operation {
Addition = 0,
MultiplyBase = 1,
MultiplyTotal = 2,
}
impl McBufReadable for Operation {
fn read_into(buf: &mut impl Read) -> Result<Self, String> {
match buf.read_byte()? {
0 => Ok(Operation::Addition),
1 => Ok(Operation::MultiplyBase),
2 => Ok(Operation::MultiplyTotal),
op => Err(format!("Unknown operation: {}", op)),
}
}
}
impl McBufWritable for Operation {
fn write_into(&self, buf: &mut impl Write) -> Result<(), std::io::Error> {
buf.write_byte(*self as u8)?;
Ok(())
}
}
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