mirror of
https://github.com/italicsjenga/valence.git
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806ffa4f42
The mutable reference wappers were causing more problems than they were solving. We will document the dangers of mem::swap later.
524 lines
20 KiB
Rust
524 lines
20 KiB
Rust
pub mod meta;
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pub mod types;
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use std::collections::hash_map::Entry;
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use std::collections::HashMap;
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use std::iter::FusedIterator;
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use std::num::NonZeroU32;
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use bitfield_struct::bitfield;
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use rayon::iter::ParallelIterator;
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pub use types::{EntityMeta, EntityType};
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use uuid::Uuid;
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use vek::{Aabb, Vec3};
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use crate::byte_angle::ByteAngle;
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use crate::packets::play::s2c::{
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EntityMetadata, S2cPlayPacket, SpawnEntity, SpawnExperienceOrb, SpawnPlayer,
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};
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use crate::protocol::RawBytes;
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use crate::slotmap::{Key, SlotMap};
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use crate::util::aabb_from_bottom_and_size;
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use crate::var_int::VarInt;
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pub struct Entities {
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sm: SlotMap<Entity>,
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uuid_to_entity: HashMap<Uuid, EntityId>,
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network_id_to_entity: HashMap<NonZeroU32, u32>,
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}
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impl Entities {
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pub(crate) fn new() -> Self {
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Self {
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sm: SlotMap::new(),
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uuid_to_entity: HashMap::new(),
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network_id_to_entity: HashMap::new(),
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}
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}
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/// Spawns a new entity with the default data. The new entity's [`EntityId`]
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/// is returned.
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///
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/// To actually see the new entity, set its position to somewhere nearby and
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/// [set its type](EntityData::set_type) to something visible.
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pub fn create(&mut self) -> (EntityId, &mut Entity) {
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self.create_with_uuid(Uuid::from_bytes(rand::random()))
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.expect("UUID collision")
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}
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/// Like [`create`](Entities::create), but requires specifying the new
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/// entity's UUID.
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///
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/// The provided UUID must not conflict with an existing entity UUID in this
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/// world. If it does, `None` is returned and the entity is not spawned.
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pub fn create_with_uuid(&mut self, uuid: Uuid) -> Option<(EntityId, &mut Entity)> {
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match self.uuid_to_entity.entry(uuid) {
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Entry::Occupied(_) => None,
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Entry::Vacant(ve) => {
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let (k, e) = self.sm.insert(Entity {
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flags: EntityFlags(0),
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meta: EntityMeta::new(EntityType::Marker),
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new_position: Vec3::default(),
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old_position: Vec3::default(),
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yaw: 0.0,
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pitch: 0.0,
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head_yaw: 0.0,
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velocity: Vec3::default(),
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uuid,
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});
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ve.insert(EntityId(k));
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Some((EntityId(k), e))
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}
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}
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}
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pub fn delete(&mut self, entity: EntityId) -> bool {
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if let Some(e) = self.sm.remove(entity.0) {
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self.uuid_to_entity
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.remove(&e.uuid)
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.expect("UUID should have been in UUID map");
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self.network_id_to_entity
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.remove(&entity.0.version())
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.expect("network ID should have been in the network ID map");
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true
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} else {
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false
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}
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}
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pub fn retain(&mut self, mut f: impl FnMut(EntityId, &mut Entity) -> bool) {
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self.sm.retain(|k, v| {
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if f(EntityId(k), v) {
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true
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} else {
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self.uuid_to_entity
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.remove(&v.uuid)
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.expect("UUID should have been in UUID map");
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self.network_id_to_entity
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.remove(&k.version())
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.expect("network ID should have been in the network ID map");
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false
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}
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});
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}
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/// Returns the number of live entities.
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pub fn count(&self) -> usize {
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self.sm.len()
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}
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/// Gets the [`EntityId`] of the entity with the given UUID in an efficient
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/// manner.
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///
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/// Returns `None` if there is no entity with the provided UUID. Returns
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/// `Some` otherwise.
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pub fn get_with_uuid(&self, uuid: Uuid) -> Option<EntityId> {
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self.uuid_to_entity.get(&uuid).cloned()
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}
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pub fn get(&self, entity: EntityId) -> Option<&Entity> {
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self.sm.get(entity.0)
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}
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pub fn get_mut(&mut self, entity: EntityId) -> Option<&mut Entity> {
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self.sm.get_mut(entity.0)
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}
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pub(crate) fn get_with_network_id(&self, network_id: i32) -> Option<EntityId> {
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let version = NonZeroU32::new(network_id as u32)?;
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let index = *self.network_id_to_entity.get(&version)?;
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Some(EntityId(Key::new(index, version)))
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}
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pub fn iter(&self) -> impl FusedIterator<Item = (EntityId, &Entity)> + Clone + '_ {
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self.sm.iter().map(|(k, v)| (EntityId(k), v))
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}
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pub fn iter_mut(&mut self) -> impl FusedIterator<Item = (EntityId, &mut Entity)> + '_ {
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self.sm.iter_mut().map(|(k, v)| (EntityId(k), v))
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}
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pub fn par_iter(&self) -> impl ParallelIterator<Item = (EntityId, &Entity)> + Clone + '_ {
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self.sm.par_iter().map(|(k, v)| (EntityId(k), v))
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}
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pub fn par_iter_mut(&mut self) -> impl ParallelIterator<Item = (EntityId, &mut Entity)> + '_ {
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self.sm.par_iter_mut().map(|(k, v)| (EntityId(k), v))
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}
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pub(crate) fn update(&mut self) {
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for (_, e) in self.iter_mut() {
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e.old_position = e.new_position;
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e.meta.clear_modifications();
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let on_ground = e.flags.on_ground();
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e.flags = EntityFlags(0);
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e.flags.set_on_ground(on_ground);
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}
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}
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}
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#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)]
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pub struct EntityId(Key);
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impl EntityId {
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pub(crate) fn to_network_id(self) -> i32 {
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self.0.version().get() as i32
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}
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}
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pub struct Entity {
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flags: EntityFlags,
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meta: EntityMeta,
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new_position: Vec3<f64>,
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old_position: Vec3<f64>,
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yaw: f32,
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pitch: f32,
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head_yaw: f32,
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velocity: Vec3<f32>,
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uuid: Uuid,
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}
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/// Contains a bit for certain fields in [`Entity`] to track if they have been
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/// modified.
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#[bitfield(u8)]
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pub(crate) struct EntityFlags {
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/// When the type of this entity changes.
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pub type_modified: bool,
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pub yaw_or_pitch_modified: bool,
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pub head_yaw_modified: bool,
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pub velocity_modified: bool,
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pub on_ground: bool,
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#[bits(3)]
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_pad: u8,
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}
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impl Entity {
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pub(crate) fn flags(&self) -> EntityFlags {
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self.flags
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}
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/// Returns a reference to this entity's [`EntityMeta`].
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pub fn meta(&self) -> &EntityMeta {
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&self.meta
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}
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/// Returns a mutable reference to this entity's [`EntityMeta`].
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pub fn meta_mut(&mut self) -> &mut EntityMeta {
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&mut self.meta
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}
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/// Returns the [`EntityType`] of this entity.
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pub fn typ(&self) -> EntityType {
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self.meta.typ()
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}
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/// Changes the [`EntityType`] of this entity to the provided type.
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///
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/// All metadata of this entity is reset to the default values.
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pub fn set_type(&mut self, typ: EntityType) {
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self.meta = EntityMeta::new(typ);
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// All metadata is lost so we must mark it as modified unconditionally.
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self.flags.set_type_modified(true);
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}
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/// Returns the position of this entity in the world it inhabits.
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pub fn position(&self) -> Vec3<f64> {
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self.new_position
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}
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/// Sets the position of this entity in the world it inhabits.
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pub fn set_position(&mut self, pos: impl Into<Vec3<f64>>) {
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self.new_position = pos.into();
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}
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/// Returns the position of this entity as it existed at the end of the
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/// previous tick.
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pub fn old_position(&self) -> Vec3<f64> {
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self.old_position
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}
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/// Gets the yaw of this entity (in degrees).
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pub fn yaw(&self) -> f32 {
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self.yaw
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}
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/// Sets the yaw of this entity (in degrees).
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pub fn set_yaw(&mut self, yaw: f32) {
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if self.yaw != yaw {
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self.yaw = yaw;
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self.flags.set_yaw_or_pitch_modified(true);
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}
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}
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/// Gets the pitch of this entity (in degrees).
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pub fn pitch(&self) -> f32 {
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self.pitch
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}
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/// Sets the pitch of this entity (in degrees).
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pub fn set_pitch(&mut self, pitch: f32) {
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if self.pitch != pitch {
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self.pitch = pitch;
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self.flags.set_yaw_or_pitch_modified(true);
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}
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}
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/// Gets the head yaw of this entity (in degrees).
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pub fn head_yaw(&self) -> f32 {
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self.head_yaw
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}
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/// Sets the head yaw of this entity (in degrees).
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pub fn set_head_yaw(&mut self, head_yaw: f32) {
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if self.head_yaw != head_yaw {
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self.head_yaw = head_yaw;
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self.flags.set_head_yaw_modified(true);
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}
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}
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/// Gets the velocity of this entity in meters per second.
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pub fn velocity(&self) -> Vec3<f32> {
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self.velocity
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}
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pub fn set_velocity(&mut self, velocity: impl Into<Vec3<f32>>) {
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let new_vel = velocity.into();
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if self.velocity != new_vel {
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self.velocity = new_vel;
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self.flags.set_velocity_modified(true);
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}
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}
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pub fn on_ground(&self) -> bool {
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self.flags.on_ground()
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}
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pub fn set_on_ground(&mut self, on_ground: bool) {
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self.flags.set_on_ground(on_ground);
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}
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/// Gets the metadata packet to send to clients after this entity has been
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/// spawned.
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///
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/// Is `None` if there is no initial metadata.
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pub(crate) fn initial_metadata_packet(&self, this_id: EntityId) -> Option<EntityMetadata> {
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self.meta.initial_metadata().map(|meta| EntityMetadata {
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entity_id: VarInt(this_id.to_network_id()),
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metadata: RawBytes(meta),
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})
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}
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/// Gets the metadata packet to send to clients when the entity is modified.
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///
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/// Is `None` if this entity's metadata has not been modified.
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pub(crate) fn updated_metadata_packet(&self, this_id: EntityId) -> Option<EntityMetadata> {
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self.meta.updated_metadata().map(|meta| EntityMetadata {
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entity_id: VarInt(this_id.to_network_id()),
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metadata: RawBytes(meta),
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})
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}
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pub(crate) fn spawn_packet(&self, this_id: EntityId) -> Option<EntitySpawnPacket> {
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match &self.meta {
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EntityMeta::Marker(_) => None,
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EntityMeta::ExperienceOrb(_) => {
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Some(EntitySpawnPacket::SpawnExperienceOrb(SpawnExperienceOrb {
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entity_id: VarInt(this_id.to_network_id()),
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position: self.new_position,
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count: 0, // TODO
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}))
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}
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EntityMeta::Player(_) => Some(EntitySpawnPacket::SpawnPlayer(SpawnPlayer {
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entity_id: VarInt(this_id.to_network_id()),
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player_uuid: self.uuid,
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position: self.new_position,
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yaw: ByteAngle::from_degrees(self.yaw),
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pitch: ByteAngle::from_degrees(self.pitch),
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})),
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_ => Some(EntitySpawnPacket::SpawnEntity(SpawnEntity {
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entity_id: VarInt(this_id.to_network_id()),
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object_uuid: self.uuid,
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typ: VarInt(self.typ() as i32),
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position: self.new_position,
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pitch: ByteAngle::from_degrees(self.pitch),
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yaw: ByteAngle::from_degrees(self.yaw),
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head_yaw: ByteAngle::from_degrees(self.head_yaw),
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data: VarInt(1), // TODO
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velocity: velocity_to_packet_units(self.velocity),
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})),
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}
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}
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pub fn hitbox(&self) -> Aabb<f64> {
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let dims = match &self.meta {
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EntityMeta::Allay(_) => [0.6, 0.35, 0.6],
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EntityMeta::ChestBoat(_) => [1.375, 0.5625, 1.375],
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EntityMeta::Frog(_) => [0.5, 0.5, 0.5],
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EntityMeta::Tadpole(_) => [0.4, 0.3, 0.4],
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EntityMeta::Warden(_) => [0.9, 2.9, 0.9],
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EntityMeta::AreaEffectCloud(e) => [
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e.get_radius() as f64 * 2.0,
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0.5,
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e.get_radius() as f64 * 2.0,
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],
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EntityMeta::ArmorStand(e) => {
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if e.get_marker() {
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[0.0, 0.0, 0.0]
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} else if e.get_small() {
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[0.5, 0.9875, 0.5]
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} else {
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[0.5, 1.975, 0.5]
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}
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}
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EntityMeta::Arrow(_) => [0.5, 0.5, 0.5],
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EntityMeta::Axolotl(_) => [1.3, 0.6, 1.3],
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EntityMeta::Bat(_) => [0.5, 0.9, 0.5],
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EntityMeta::Bee(_) => [0.7, 0.6, 0.7], // TODO: baby size?
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EntityMeta::Blaze(_) => [0.6, 1.8, 0.6],
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EntityMeta::Boat(_) => [1.375, 0.5625, 1.375],
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EntityMeta::Cat(_) => [0.6, 0.7, 0.6],
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EntityMeta::CaveSpider(_) => [0.7, 0.5, 0.7],
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EntityMeta::Chicken(_) => [0.4, 0.7, 0.4], // TODO: baby size?
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EntityMeta::Cod(_) => [0.5, 0.3, 0.5],
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EntityMeta::Cow(_) => [0.9, 1.4, 0.9], // TODO: baby size?
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EntityMeta::Creeper(_) => [0.6, 1.7, 0.6],
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EntityMeta::Dolphin(_) => [0.9, 0.6, 0.9],
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EntityMeta::Donkey(_) => [1.5, 1.39648, 1.5], // TODO: baby size?
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EntityMeta::DragonFireball(_) => [1.0, 1.0, 1.0],
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EntityMeta::Drowned(_) => [0.6, 1.95, 0.6], // TODO: baby size?
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EntityMeta::ElderGuardian(_) => [1.9975, 1.9975, 1.9975],
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EntityMeta::EndCrystal(_) => [2.0, 2.0, 2.0],
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EntityMeta::EnderDragon(_) => [16.0, 8.0, 16.0],
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EntityMeta::Enderman(_) => [0.6, 2.9, 0.6],
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EntityMeta::Endermite(_) => [0.4, 0.3, 0.4],
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EntityMeta::Evoker(_) => [0.6, 1.95, 0.6],
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EntityMeta::EvokerFangs(_) => [0.5, 0.8, 0.5],
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EntityMeta::ExperienceOrb(_) => [0.5, 0.5, 0.5],
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EntityMeta::EyeOfEnder(_) => [0.25, 0.25, 0.25],
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EntityMeta::FallingBlock(_) => [0.98, 0.98, 0.98],
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EntityMeta::FireworkRocket(_) => [0.25, 0.25, 0.25],
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EntityMeta::Fox(_) => [0.6, 0.7, 0.6], // TODO: baby size?
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EntityMeta::Ghast(_) => [4.0, 4.0, 4.0],
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EntityMeta::Giant(_) => [3.6, 12.0, 3.6],
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EntityMeta::GlowItemFrame(_) => todo!("account for rotation"),
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EntityMeta::GlowSquid(_) => [0.8, 0.8, 0.8],
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EntityMeta::Goat(_) => [1.3, 0.9, 1.3], // TODO: baby size?
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EntityMeta::Guardian(_) => [0.85, 0.85, 0.85],
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EntityMeta::Hoglin(_) => [1.39648, 1.4, 1.39648], // TODO: baby size?
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EntityMeta::Horse(_) => [1.39648, 1.6, 1.39648], // TODO: baby size?
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EntityMeta::Husk(_) => [0.6, 1.95, 0.6], // TODO: baby size?
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EntityMeta::Illusioner(_) => [0.6, 1.95, 0.6],
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EntityMeta::IronGolem(_) => [1.4, 2.7, 1.4],
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EntityMeta::Item(_) => [0.25, 0.25, 0.25],
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EntityMeta::ItemFrame(_) => todo!("account for rotation"),
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EntityMeta::Fireball(_) => [1.0, 1.0, 1.0],
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EntityMeta::LeashKnot(_) => [0.375, 0.5, 0.375],
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EntityMeta::LightningBolt(_) => [0.0, 0.0, 0.0],
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EntityMeta::Llama(_) => [0.9, 1.87, 0.9], // TODO: baby size?
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EntityMeta::LlamaSpit(_) => [0.25, 0.25, 0.25],
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EntityMeta::MagmaCube(e) => {
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let s = e.get_size() as f64 * 0.51000005;
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[s, s, s]
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}
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EntityMeta::Marker(_) => [0.0, 0.0, 0.0],
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EntityMeta::Minecart(_) => [0.98, 0.7, 0.98],
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EntityMeta::ChestMinecart(_) => [0.98, 0.7, 0.98],
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EntityMeta::CommandBlockMinecart(_) => [0.98, 0.7, 0.98],
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EntityMeta::FurnaceMinecart(_) => [0.98, 0.7, 0.98],
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EntityMeta::HopperMinecart(_) => [0.98, 0.7, 0.98],
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EntityMeta::SpawnerMinecart(_) => [0.98, 0.7, 0.98],
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EntityMeta::TntMinecart(_) => [0.98, 0.7, 0.98],
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EntityMeta::Mule(_) => [1.39648, 1.6, 1.39648], // TODO: baby size?
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EntityMeta::Mooshroom(_) => [0.9, 1.4, 0.9], // TODO: baby size?
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EntityMeta::Ocelot(_) => [0.6, 0.7, 0.6], // TODO: baby size?
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EntityMeta::Painting(_) => todo!("account for rotation and type"),
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EntityMeta::Panda(_) => [0.6, 0.7, 0.6], // TODO: baby size?
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EntityMeta::Parrot(_) => [0.5, 0.9, 0.5],
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EntityMeta::Phantom(_) => [0.9, 0.5, 0.9],
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EntityMeta::Pig(_) => [0.9, 0.9, 0.9], // TODO: baby size?
|
|
EntityMeta::Piglin(_) => [0.6, 1.95, 0.6], // TODO: baby size?
|
|
EntityMeta::PiglinBrute(_) => [0.6, 1.95, 0.6],
|
|
EntityMeta::Pillager(_) => [0.6, 1.95, 0.6],
|
|
EntityMeta::PolarBear(_) => [1.4, 1.4, 1.4], // TODO: baby size?
|
|
EntityMeta::Tnt(_) => [0.98, 0.98, 0.98],
|
|
EntityMeta::Pufferfish(_) => [0.7, 0.7, 0.7],
|
|
EntityMeta::Rabbit(_) => [0.4, 0.5, 0.4], // TODO: baby size?
|
|
EntityMeta::Ravager(_) => [1.95, 2.2, 1.95],
|
|
EntityMeta::Salmon(_) => [0.7, 0.4, 0.7],
|
|
EntityMeta::Sheep(_) => [0.9, 1.3, 0.9], // TODO: baby size?
|
|
EntityMeta::Shulker(_) => [1.0, 1.0, 1.0], // TODO: how is height calculated?
|
|
EntityMeta::ShulkerBullet(_) => [0.3125, 0.3125, 0.3125],
|
|
EntityMeta::Silverfish(_) => [0.4, 0.3, 0.4],
|
|
EntityMeta::Skeleton(_) => [0.6, 1.99, 0.6],
|
|
EntityMeta::SkeletonHorse(_) => [1.39648, 1.6, 1.39648], // TODO: baby size?
|
|
EntityMeta::Slime(e) => {
|
|
let s = 0.51000005 * e.get_size() as f64;
|
|
[s, s, s]
|
|
}
|
|
EntityMeta::SmallFireball(_) => [0.3125, 0.3125, 0.3125],
|
|
EntityMeta::SnowGolem(_) => [0.7, 1.9, 0.7],
|
|
EntityMeta::Snowball(_) => [0.25, 0.25, 0.25],
|
|
EntityMeta::SpectralArrow(_) => [0.5, 0.5, 0.5],
|
|
EntityMeta::Spider(_) => [1.4, 0.9, 1.4],
|
|
EntityMeta::Squid(_) => [0.8, 0.8, 0.8],
|
|
EntityMeta::Stray(_) => [0.6, 1.99, 0.6],
|
|
EntityMeta::Strider(_) => [0.9, 1.7, 0.9], // TODO: baby size?
|
|
EntityMeta::Egg(_) => [0.25, 0.25, 0.25],
|
|
EntityMeta::EnderPearl(_) => [0.25, 0.25, 0.25],
|
|
EntityMeta::ExperienceBottle(_) => [0.25, 0.25, 0.25],
|
|
EntityMeta::Potion(_) => [0.25, 0.25, 0.25],
|
|
EntityMeta::Trident(_) => [0.5, 0.5, 0.5],
|
|
EntityMeta::TraderLlama(_) => [0.9, 1.87, 0.9],
|
|
EntityMeta::TropicalFish(_) => [0.5, 0.4, 0.5],
|
|
EntityMeta::Turtle(_) => [1.2, 0.4, 1.2], // TODO: baby size?
|
|
EntityMeta::Vex(_) => [0.4, 0.8, 0.4],
|
|
EntityMeta::Villager(_) => [0.6, 1.95, 0.6], // TODO: baby size?
|
|
EntityMeta::Vindicator(_) => [0.6, 1.95, 0.6],
|
|
EntityMeta::WanderingTrader(_) => [0.6, 1.95, 0.6],
|
|
EntityMeta::Witch(_) => [0.6, 1.95, 0.6],
|
|
EntityMeta::Wither(_) => [0.9, 3.5, 0.9],
|
|
EntityMeta::WitherSkeleton(_) => [0.7, 2.4, 0.7],
|
|
EntityMeta::WitherSkull(_) => [0.3125, 0.3125, 0.3125],
|
|
EntityMeta::Wolf(_) => [0.6, 0.85, 0.6], // TODO: baby size?
|
|
EntityMeta::Zoglin(_) => [1.39648, 1.4, 1.39648], // TODO: baby size?
|
|
EntityMeta::Zombie(_) => [0.6, 1.95, 0.6], // TODO: baby size?
|
|
EntityMeta::ZombieHorse(_) => [1.39648, 1.6, 1.39648], // TODO: baby size?
|
|
EntityMeta::ZombieVillager(_) => [0.6, 1.95, 0.6], // TODO: baby size?
|
|
EntityMeta::ZombifiedPiglin(_) => [0.6, 1.95, 0.6], // TODO: baby size?
|
|
EntityMeta::Player(_) => [0.6, 1.8, 0.6], // TODO: changes depending on the pose.
|
|
EntityMeta::FishingBobber(_) => [0.25, 0.25, 0.25],
|
|
};
|
|
|
|
aabb_from_bottom_and_size(self.new_position, dims.into())
|
|
}
|
|
}
|
|
|
|
pub(crate) fn velocity_to_packet_units(vel: Vec3<f32>) -> Vec3<i16> {
|
|
// The saturating cast to i16 is desirable.
|
|
(vel * 400.0).as_()
|
|
}
|
|
|
|
pub(crate) enum EntitySpawnPacket {
|
|
SpawnEntity(SpawnEntity),
|
|
SpawnExperienceOrb(SpawnExperienceOrb),
|
|
SpawnPlayer(SpawnPlayer),
|
|
}
|
|
|
|
impl From<EntitySpawnPacket> for S2cPlayPacket {
|
|
fn from(pkt: EntitySpawnPacket) -> Self {
|
|
match pkt {
|
|
EntitySpawnPacket::SpawnEntity(pkt) => pkt.into(),
|
|
EntitySpawnPacket::SpawnExperienceOrb(pkt) => pkt.into(),
|
|
EntitySpawnPacket::SpawnPlayer(pkt) => pkt.into(),
|
|
}
|
|
}
|
|
}
|