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use std::io::{self, Cursor, Write};
use azalea_buf::{AzBuf, AzaleaRead, AzaleaReadVar, AzaleaWrite, AzaleaWriteVar};
use azalea_core::position::Vec3;
use azalea_protocol_macros::ClientboundGamePacket;
use azalea_world::MinecraftEntityId;
#[derive(Clone, Debug, AzBuf, ClientboundGamePacket)]
pub struct ClientboundDamageEvent {
#[var]
pub entity_id: MinecraftEntityId,
#[var]
pub source_type_id: u32,
pub source_cause_id: OptionalEntityId,
pub source_direct_id: OptionalEntityId,
pub source_position: Option<Vec3>,
}
#[derive(Clone, Debug)]
pub struct OptionalEntityId(pub Option<u32>);
impl AzaleaRead for OptionalEntityId {
fn azalea_read(buf: &mut Cursor<&[u8]>) -> Result<Self, azalea_buf::BufReadError> {
match u32::azalea_read_var(buf)? {
0 => Ok(OptionalEntityId(None)),
id => Ok(OptionalEntityId(Some(id - 1))),
}
}
}
impl AzaleaWrite for OptionalEntityId {
fn azalea_write(&self, buf: &mut impl Write) -> io::Result<()> {
match self.0 {
Some(id) => (id + 1).azalea_write_var(buf),
None => 0u32.azalea_write_var(buf),
}
}
}
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