From 8fd11c174d921a8085bb7e67ae62958e23d174cb Mon Sep 17 00:00:00 2001
From: mat <git@matdoes.dev>
Date: Sun, 22 Feb 2026 18:38:25 -0900
Subject: fix incorrect PalettedContainer::write impl

---
 .../src/plugins/packet/relative_updates.rs         |  2 +-
 azalea-entity/src/plugin/mod.rs                    |  1 +
 azalea-world/src/bit_storage.rs                    |  2 +-
 azalea-world/src/chunk_storage.rs                  | 32 +++++++++++++++++++++-
 azalea-world/src/palette/container.rs              | 11 ++++++--
 azalea-world/src/palette/mod.rs                    |  2 +-
 6 files changed, 43 insertions(+), 7 deletions(-)

diff --git a/azalea-client/src/plugins/packet/relative_updates.rs b/azalea-client/src/plugins/packet/relative_updates.rs
index d6367829..35218e7d 100644
--- a/azalea-client/src/plugins/packet/relative_updates.rs
+++ b/azalea-client/src/plugins/packet/relative_updates.rs
@@ -107,7 +107,7 @@ pub fn should_apply_entity_update(
 
     let this_client_updates_received = partial_entity_infos
         .updates_received
-        .get(&minecraft_entity_id)
+        .get(minecraft_entity_id)
         .copied();
 
     let can_update = if let Some(updates_received) = updates_received {
diff --git a/azalea-entity/src/plugin/mod.rs b/azalea-entity/src/plugin/mod.rs
index 7c4f3ed4..bedb03b0 100644
--- a/azalea-entity/src/plugin/mod.rs
+++ b/azalea-entity/src/plugin/mod.rs
@@ -231,6 +231,7 @@ pub fn update_dimensions(
     }
 }
 
+#[allow(clippy::type_complexity)]
 pub fn update_crouching(
     query: Query<(&mut Crouching, &Pose), (Without<LocalEntity>, With<Player>)>,
 ) {
diff --git a/azalea-world/src/bit_storage.rs b/azalea-world/src/bit_storage.rs
index 44705f88..cefc0aeb 100644
--- a/azalea-world/src/bit_storage.rs
+++ b/azalea-world/src/bit_storage.rs
@@ -71,7 +71,7 @@ const MAGIC: [(i32, i32, u32); 64] = [
 ];
 
 /// A compact list of integers with the given number of bits per entry.
-#[derive(Clone, Debug, Default)]
+#[derive(Clone, Debug, Default, PartialEq)]
 pub struct BitStorage {
     pub data: Box<[u64]>,
     bits: usize,
diff --git a/azalea-world/src/chunk_storage.rs b/azalea-world/src/chunk_storage.rs
index 23da5af5..3f410773 100644
--- a/azalea-world/src/chunk_storage.rs
+++ b/azalea-world/src/chunk_storage.rs
@@ -79,7 +79,7 @@ pub struct Chunk {
 }
 
 /// A section of a chunk, i.e. a 16*16*16 block area.
-#[derive(Clone, Debug, Default)]
+#[derive(Clone, Debug, Default, PartialEq)]
 pub struct Section {
     /// The number of non-empty blocks in the section, as sent to us by the
     /// server.
@@ -579,6 +579,7 @@ pub fn section_index(y: i32, min_y: i32) -> u32 {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use crate::palette::SectionPos;
 
     #[test]
     fn test_section_index() {
@@ -639,4 +640,33 @@ mod tests {
             ChunkPos::new(2, -1),
         );
     }
+
+    #[test]
+    fn serialize_and_deserialize_section() {
+        let mut states = PalettedContainer::new();
+
+        states.set(
+            SectionPos::new(1, 2, 3),
+            BlockState::try_from(BlockState::MAX_STATE).unwrap(),
+        );
+        states.set(
+            SectionPos::new(4, 5, 6),
+            BlockState::try_from(BlockState::MAX_STATE).unwrap(),
+        );
+        let biomes = PalettedContainer::new();
+        let section = Section {
+            block_count: 2,
+            states,
+            biomes,
+        };
+
+        let mut buf = Vec::new();
+        section.azalea_write(&mut buf).unwrap();
+
+        let mut cur = Cursor::new(buf.as_slice());
+        let deserialized_section = Section::azalea_read(&mut cur).unwrap();
+        assert_eq!(cur.position(), buf.len() as u64);
+
+        assert_eq!(section, deserialized_section);
+    }
 }
diff --git a/azalea-world/src/palette/container.rs b/azalea-world/src/palette/container.rs
index 4e4e5595..43262a3d 100644
--- a/azalea-world/src/palette/container.rs
+++ b/azalea-world/src/palette/container.rs
@@ -12,7 +12,7 @@ use tracing::{debug, warn};
 use super::{Palette, PaletteKind};
 use crate::BitStorage;
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, PartialEq)]
 pub struct PalettedContainer<S: PalletedContainerKind> {
     pub bits_per_entry: u8,
     /// This is usually a list of unique values that appear in the container so
@@ -25,7 +25,9 @@ pub struct PalettedContainer<S: PalletedContainerKind> {
     pub storage: BitStorage,
 }
 
-pub trait PalletedContainerKind: Copy + Clone + Debug + Default + TryFrom<u32> + Into<u32> {
+pub trait PalletedContainerKind:
+    Copy + Clone + Debug + Default + PartialEq + TryFrom<u32> + Into<u32>
+{
     type SectionPos: SectionPos;
 
     fn size_bits() -> usize;
@@ -295,7 +297,10 @@ impl<S: PalletedContainerKind> PalettedContainer<S> {
     pub fn write(&self, buf: &mut impl Write) -> io::Result<()> {
         self.bits_per_entry.azalea_write(buf)?;
         self.palette.write(buf)?;
-        self.storage.data.azalea_write(buf)?;
+        for word in &self.storage.data {
+            word.azalea_write(buf)?;
+        }
+
         Ok(())
     }
 }
diff --git a/azalea-world/src/palette/mod.rs b/azalea-world/src/palette/mod.rs
index 11b38f45..067c68c4 100644
--- a/azalea-world/src/palette/mod.rs
+++ b/azalea-world/src/palette/mod.rs
@@ -12,7 +12,7 @@ use azalea_buf::{AzBufVar, BufReadError};
 pub use container::*;
 
 /// A representation of the different types of chunk palettes Minecraft uses.
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, PartialEq)]
 pub enum Palette<S: PalletedContainerKind> {
     /// ID of the corresponding entry in its global palette
     SingleValue(S),
-- 
cgit v1.2.3