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#![feature(int_roundings)]
mod bit_storage;
mod chunk_storage;
pub mod entity;
mod entity_storage;
mod palette;
use azalea_block::BlockState;
use azalea_buf::BufReadError;
use azalea_core::{BlockPos, ChunkPos, PositionDelta8, Vec3};
pub use bit_storage::BitStorage;
pub use chunk_storage::{Chunk, ChunkStorage};
use entity::{Entity, EntityData};
pub use entity_storage::EntityStorage;
use parking_lot::Mutex;
use std::{
io::Cursor,
ops::{Index, IndexMut},
sync::Arc,
};
use thiserror::Error;
use uuid::Uuid;
/// A world is a collection of chunks and entities. They're called "levels" in Minecraft's source code.
#[derive(Debug, Default)]
pub struct World {
pub chunk_storage: ChunkStorage,
pub entity_storage: EntityStorage,
}
#[derive(Error, Debug)]
pub enum MoveEntityError {
#[error("Entity doesn't exist")]
EntityDoesNotExist,
}
impl World {
pub fn new(chunk_radius: u32, height: u32, min_y: i32) -> Self {
World {
chunk_storage: ChunkStorage::new(chunk_radius, height, min_y),
entity_storage: EntityStorage::new(),
}
}
pub fn replace_with_packet_data(
&mut self,
pos: &ChunkPos,
data: &mut Cursor<&[u8]>,
) -> Result<(), BufReadError> {
self.chunk_storage.replace_with_packet_data(pos, data)
}
pub fn set_chunk(&mut self, pos: &ChunkPos, chunk: Option<Chunk>) -> Result<(), BufReadError> {
self[pos] = chunk.map(|c| Arc::new(Mutex::new(c)));
Ok(())
}
pub fn update_view_center(&mut self, pos: &ChunkPos) {
self.chunk_storage.view_center = *pos;
}
pub fn get_block_state(&self, pos: &BlockPos) -> Option<BlockState> {
self.chunk_storage.get_block_state(pos)
}
pub fn set_block_state(&mut self, pos: &BlockPos, state: BlockState) -> Option<BlockState> {
self.chunk_storage.set_block_state(pos, state)
}
pub fn set_entity_pos(&mut self, entity_id: u32, new_pos: Vec3) -> Result<(), MoveEntityError> {
let mut entity = self
.entity_mut(entity_id)
.ok_or(MoveEntityError::EntityDoesNotExist)?;
let old_chunk = ChunkPos::from(entity.pos());
let new_chunk = ChunkPos::from(&new_pos);
// this is fine because we update the chunk below
unsafe { entity.move_unchecked(new_pos) };
if old_chunk != new_chunk {
self.entity_storage
.update_entity_chunk(entity_id, &old_chunk, &new_chunk);
}
Ok(())
}
pub fn move_entity_with_delta(
&mut self,
entity_id: u32,
delta: &PositionDelta8,
) -> Result<(), MoveEntityError> {
let mut entity = self
.entity_mut(entity_id)
.ok_or(MoveEntityError::EntityDoesNotExist)?;
let new_pos = entity.pos().with_delta(delta);
let old_chunk = ChunkPos::from(entity.pos());
let new_chunk = ChunkPos::from(&new_pos);
// this is fine because we update the chunk below
unsafe { entity.move_unchecked(new_pos) };
if old_chunk != new_chunk {
self.entity_storage
.update_entity_chunk(entity_id, &old_chunk, &new_chunk);
}
Ok(())
}
pub fn add_entity(&mut self, id: u32, entity: EntityData) {
self.entity_storage.insert(id, entity);
}
pub fn height(&self) -> u32 {
self.chunk_storage.height
}
pub fn min_y(&self) -> i32 {
self.chunk_storage.min_y
}
pub fn entity_data_by_id(&self, id: u32) -> Option<&EntityData> {
self.entity_storage.get_by_id(id)
}
pub fn entity_data_mut_by_id(&mut self, id: u32) -> Option<&mut EntityData> {
self.entity_storage.get_mut_by_id(id)
}
pub fn entity(&self, id: u32) -> Option<Entity<&World>> {
let entity_data = self.entity_storage.get_by_id(id)?;
let entity_ptr = unsafe { entity_data.as_const_ptr() };
Some(Entity::new(self, id, entity_ptr))
}
pub fn entity_mut(&mut self, id: u32) -> Option<Entity<'_, &mut World>> {
let entity_data = self.entity_storage.get_mut_by_id(id)?;
let entity_ptr = unsafe { entity_data.as_ptr() };
Some(Entity::new(self, id, entity_ptr))
}
pub fn entity_by_uuid(&self, uuid: &Uuid) -> Option<&EntityData> {
self.entity_storage.get_by_uuid(uuid)
}
/// Get an iterator over all entities.
#[inline]
pub fn entities(&self) -> std::collections::hash_map::Values<'_, u32, EntityData> {
self.entity_storage.entities()
}
pub fn find_one_entity<F>(&self, mut f: F) -> Option<&EntityData>
where
F: FnMut(&EntityData) -> bool,
{
self.entity_storage.find_one_entity(|entity| f(entity))
}
}
impl Index<&ChunkPos> for World {
type Output = Option<Arc<Mutex<Chunk>>>;
fn index(&self, pos: &ChunkPos) -> &Self::Output {
&self.chunk_storage[pos]
}
}
impl IndexMut<&ChunkPos> for World {
fn index_mut<'a>(&'a mut self, pos: &ChunkPos) -> &'a mut Self::Output {
&mut self.chunk_storage[pos]
}
}
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