update ServerboundContainerClick to use HashedStack from 1.21.5

Cargo.lock

@@ -492,6 +492,7 @@ dependencies = [
  "azalea-registry",
  "azalea-world",
  "bevy_ecs",
+ "crc32fast",
  "flate2",
  "futures",
  "futures-lite",

Cargo.toml

@@ -80,6 +80,7 @@ num-format = "0.4.4"
 indexmap = "2.7.1"
 paste = "1.0.15"
 compact_str = "0.8.1"
+crc32fast = "1.4.2"
 
 # --- Profile Settings ---
 

azalea-client/src/plugins/inventory.rs

@@ -10,7 +10,8 @@ use azalea_inventory::{
     },
 };
 use azalea_protocol::packets::game::{
-    s_container_click::ServerboundContainerClick, s_container_close::ServerboundContainerClose,
+    s_container_click::{HashedStack, ServerboundContainerClick},
+    s_container_close::ServerboundContainerClose,
     s_set_carried_item::ServerboundSetCarriedItem,
 };
 use azalea_registry::MenuKind;
@@ -23,7 +24,7 @@ use bevy_ecs::{
     schedule::{IntoSystemConfigs, SystemSet},
     system::{Commands, Query},
 };
-use tracing::warn;
+use tracing::{error, warn};
 
 use super::packet::game::handle_outgoing_packets;
 use crate::{
@@ -667,8 +668,8 @@ pub fn handle_container_click_event(
     for event in events.read() {
         let (entity, mut inventory) = query.get_mut(event.entity).unwrap();
         if inventory.id != event.window_id {
-            warn!(
-                "Tried to click container with ID {}, but the current container ID is {}",
+            error!(
+                "Tried to click container with ID {}, but the current container ID is {}. Click packet won't be sent.",
                 event.window_id, inventory.id
             );
             continue;
@@ -681,11 +682,11 @@ pub fn handle_container_click_event(
 
         // see which slots changed after clicking and put them in the hashmap
         // the server uses this to check if we desynced
-        let mut changed_slots: HashMap<u16, ItemStack> = HashMap::new();
+        let mut changed_slots: HashMap<u16, HashedStack> = HashMap::new();
         for (slot_index, old_slot) in old_slots.iter().enumerate() {
             let new_slot = &menu.slots()[slot_index];
             if old_slot != new_slot {
-                changed_slots.insert(slot_index as u16, new_slot.clone());
+                changed_slots.insert(slot_index as u16, HashedStack::from(new_slot));
             }
         }
 
@@ -721,7 +722,7 @@ fn handle_set_container_content_event(
 
         if event.container_id != inventory.id {
             warn!(
-                "Tried to set container content with ID {}, but the current container ID is {}",
+                "Got SetContainerContentEvent for container with ID {}, but the current container ID is {}",
                 event.container_id, inventory.id
             );
             continue;

azalea-inventory/src/slot.rs

@@ -178,7 +178,8 @@ impl AzaleaWrite for ItemStack {
 /// and Azalea does not implement that yet.
 #[derive(Default)]
 pub struct DataComponentPatch {
-    components: IndexMap<DataComponentKind, Option<Box<dyn components::EncodableDataComponent>>>,
+    pub components:
+        IndexMap<DataComponentKind, Option<Box<dyn components::EncodableDataComponent>>>,
 }
 
 impl DataComponentPatch {

azalea-protocol/Cargo.toml

@@ -48,8 +48,10 @@ tokio-util = { workspace = true, features = ["codec"] }
 tracing.workspace = true
 hickory-resolver = { workspace = true, features = ["tokio-runtime"] }
 uuid.workspace = true
+crc32fast = { workspace = true, optional = true }
 
 [features]
 connecting = []
 default = ["packets"]
-packets = ["connecting", "dep:azalea-core"]
+packets = ["connecting", "dep:azalea-core", "crc32"]
+crc32 = ["crc32fast"]

azalea-protocol/azalea-protocol-macros/src/lib.rs

@@ -9,13 +9,16 @@ use syn::{
 fn as_packet_derive(input: TokenStream, state: proc_macro2::TokenStream) -> TokenStream {
     let DeriveInput { ident, data, .. } = parse_macro_input!(input);
 
+    // technically it would still work with enums and non-named structs but for
+    // consistency in the api it's nicer if they are all just structs, which is why
+    // we enforce this here
     let syn::Data::Struct(syn::DataStruct { fields, .. }) = &data else {
         panic!("#[derive(*Packet)] can only be used on structs")
     };
-
     let (syn::Fields::Named(_) | syn::Fields::Unit) = fields else {
         panic!("#[derive(*Packet)] can only be used on structs with named fields")
     };
+
     let variant_name = variant_name_from(&ident);
 
     let contents = quote! {

azalea-protocol/src/packets/game/s_container_click.rs

@@ -1,6 +1,6 @@
 use std::collections::HashMap;
 
-use azalea_buf::AzBuf;
+use azalea_buf::{AzBuf, AzaleaWrite};
 use azalea_inventory::{ItemStack, operations::ClickType};
 use azalea_protocol_macros::ServerboundGamePacket;
 
@@ -13,6 +13,70 @@ pub struct ServerboundContainerClick {
     pub slot_num: i16,
     pub button_num: u8,
     pub click_type: ClickType,
-    pub changed_slots: HashMap<u16, ItemStack>,
+    pub changed_slots: HashMap<u16, HashedStack>,
     pub carried_item: ItemStack,
 }
+
+/// Similar to an [`ItemStack`] but only carrying a CRC32 hash of the value of
+/// added data components instead of their entire contents.
+#[derive(Clone, Debug, AzBuf)]
+pub struct HashedStack(pub Option<HashedActualItem>);
+
+#[derive(Clone, Debug, AzBuf)]
+pub struct HashedActualItem {
+    pub kind: azalea_registry::Item,
+    #[var]
+    pub count: i32,
+    pub components: HashedPatchMap,
+}
+
+#[derive(Clone, Debug, AzBuf)]
+pub struct HashedPatchMap {
+    /// The value is a CRC32 hash of the data component's network serialization.
+    /// (kind + data)
+    #[limit(256)]
+    pub added_components: Vec<(azalea_registry::DataComponentKind, u32)>,
+    #[limit(256)]
+    pub removed_components: Vec<azalea_registry::DataComponentKind>,
+}
+
+/// Convert your [`ItemStack`] into a [`HashedStack`] by hashing the data
+/// components.
+///
+/// This will be necessary if you're writing a client or server, but if you're
+/// just making a proxy then you can remove the `crc32` dependency by disabling
+/// the `crc32` feature on `azalea-protocol`.
+#[cfg(feature = "crc32")]
+impl From<&ItemStack> for HashedStack {
+    fn from(item: &ItemStack) -> Self {
+        let ItemStack::Present(item) = item else {
+            return Self(None);
+        };
+
+        let mut added_components = Vec::new();
+        let mut removed_components = Vec::new();
+
+        for (&kind, data) in &item.components.components {
+            if let Some(data) = data {
+                // encodeCap in TypedDataComponent.java
+                let mut buf = Vec::new();
+                kind.azalea_write(&mut buf).unwrap();
+                data.encode(&mut buf).unwrap();
+                added_components.push((kind, crc32fast::hash(&buf)));
+            } else {
+                removed_components.push(kind);
+            }
+        }
+
+        let components = HashedPatchMap {
+            added_components,
+            removed_components,
+        };
+        let item = HashedActualItem {
+            kind: item.kind,
+            count: item.count,
+            components,
+        };
+        Self(Some(item))
+    }
+}