Refactor azalea-client (#205)

* start organizing packet_handling more by moving packet handlers into their own functions

* finish writing all the handler functions for packets

* use macro for generating match statement for packet handler functions

* fix set_entity_data

* update config state to also use handler functions

* organize az-client file structure by moving things into plugins directory

* fix merge issues

1 files changed, 0 insertions, 768 deletions

diff --git a/azalea-client/src/inventory.rs b/azalea-client/src/inventory.rs
deleted file mode 100644
index 4d796c9c..00000000
--- a/azalea-client/src/inventory.rs
+++ /dev/null
@@ -1,768 +0,0 @@
-use std::collections::{HashMap, HashSet};
-
-use azalea_chat::FormattedText;
-pub use azalea_inventory::*;
-use azalea_inventory::{
-    item::MaxStackSizeExt,
-    operations::{
-        ClickOperation, CloneClick, PickupAllClick, PickupClick, QuickCraftKind, QuickCraftStatus,
-        QuickCraftStatusKind, QuickMoveClick, ThrowClick,
-    },
-};
-use azalea_protocol::packets::game::{
-    s_container_click::ServerboundContainerClick, s_container_close::ServerboundContainerClose,
-    s_set_carried_item::ServerboundSetCarriedItem,
-};
-use azalea_registry::MenuKind;
-use bevy_app::{App, Plugin, Update};
-use bevy_ecs::{
-    component::Component,
-    entity::Entity,
-    event::EventReader,
-    prelude::{Event, EventWriter},
-    schedule::{IntoSystemConfigs, SystemSet},
-    system::Query,
-};
-use tracing::warn;
-
-use crate::{
-    Client,
-    local_player::PlayerAbilities,
-    packet_handling::game::{SendPacketEvent, handle_send_packet_event},
-    respawn::perform_respawn,
-};
-
-pub struct InventoryPlugin;
-impl Plugin for InventoryPlugin {
-    fn build(&self, app: &mut App) {
-        app.add_event::<ClientSideCloseContainerEvent>()
-            .add_event::<MenuOpenedEvent>()
-            .add_event::<CloseContainerEvent>()
-            .add_event::<ContainerClickEvent>()
-            .add_event::<SetContainerContentEvent>()
-            .add_event::<SetSelectedHotbarSlotEvent>()
-            .add_systems(
-                Update,
-                (
-                    handle_set_selected_hotbar_slot_event,
-                    handle_menu_opened_event,
-                    handle_set_container_content_event,
-                    handle_container_click_event,
-                    handle_container_close_event.before(handle_send_packet_event),
-                    handle_client_side_close_container_event,
-                )
-                    .chain()
-                    .in_set(InventorySet)
-                    .before(perform_respawn),
-            );
-    }
-}
-
-#[derive(SystemSet, Debug, Hash, PartialEq, Eq, Clone)]
-pub struct InventorySet;
-
-impl Client {
-    /// Return the menu that is currently open. If no menu is open, this will
-    /// have the player's inventory.
-    pub fn menu(&self) -> Menu {
-        let mut ecs = self.ecs.lock();
-        let inventory = self.query::<&Inventory>(&mut ecs);
-        inventory.menu().clone()
-    }
-}
-
-/// A component present on all local players that have an inventory.
-#[derive(Component, Debug, Clone)]
-pub struct Inventory {
-    /// A component that contains the player's inventory menu. This is
-    /// guaranteed to be a `Menu::Player`.
-    ///
-    /// We keep it as a [`Menu`] since `Menu` has some useful functions that
-    /// bare [`azalea_inventory::Player`] doesn't have.
-    pub inventory_menu: azalea_inventory::Menu,
-
-    /// The ID of the container that's currently open. Its value is not
-    /// guaranteed to be anything specific, and may change every time you open a
-    /// container (unless it's 0, in which case it means that no container is
-    /// open).
-    pub id: i32,
-    /// The current container menu that the player has open. If no container is
-    /// open, this will be `None`.
-    pub container_menu: Option<azalea_inventory::Menu>,
-    /// The custom name of the menu that's currently open. This is Some when
-    /// `container_menu` is Some.
-    pub container_menu_title: Option<FormattedText>,
-    /// The item that is currently held by the cursor. `Slot::Empty` if nothing
-    /// is currently being held.
-    ///
-    /// This is different from [`Self::selected_hotbar_slot`], which is the
-    /// item that's selected in the hotbar.
-    pub carried: ItemStack,
-    /// An identifier used by the server to track client inventory desyncs. This
-    /// is sent on every container click, and it's only ever updated when the
-    /// server sends a new container update.
-    pub state_id: u32,
-
-    pub quick_craft_status: QuickCraftStatusKind,
-    pub quick_craft_kind: QuickCraftKind,
-    /// A set of the indexes of the slots that have been right clicked in
-    /// this "quick craft".
-    pub quick_craft_slots: HashSet<u16>,
-
-    /// The index of the item in the hotbar that's currently being held by the
-    /// player. This MUST be in the range 0..9 (not including 9).
-    ///
-    /// In a vanilla client this is changed by pressing the number keys or using
-    /// the scroll wheel.
-    pub selected_hotbar_slot: u8,
-}
-
-impl Inventory {
-    /// Returns a reference to the currently active menu. If a container is open
-    /// it'll return [`Self::container_menu`], otherwise
-    /// [`Self::inventory_menu`].
-    ///
-    /// Use [`Self::menu_mut`] if you need a mutable reference.
-    pub fn menu(&self) -> &azalea_inventory::Menu {
-        match &self.container_menu {
-            Some(menu) => menu,
-            _ => &self.inventory_menu,
-        }
-    }
-
-    /// Returns a mutable reference to the currently active menu. If a container
-    /// is open it'll return [`Self::container_menu`], otherwise
-    /// [`Self::inventory_menu`].
-    ///
-    /// Use [`Self::menu`] if you don't need a mutable reference.
-    pub fn menu_mut(&mut self) -> &mut azalea_inventory::Menu {
-        match &mut self.container_menu {
-            Some(menu) => menu,
-            _ => &mut self.inventory_menu,
-        }
-    }
-
-    /// Modify the inventory as if the given operation was performed on it.
-    pub fn simulate_click(
-        &mut self,
-        operation: &ClickOperation,
-        player_abilities: &PlayerAbilities,
-    ) {
-        if let ClickOperation::QuickCraft(quick_craft) = operation {
-            let last_quick_craft_status_tmp = self.quick_craft_status.clone();
-            self.quick_craft_status = last_quick_craft_status_tmp.clone();
-            let last_quick_craft_status = last_quick_craft_status_tmp;
-
-            // no carried item, reset
-            if self.carried.is_empty() {
-                return self.reset_quick_craft();
-            }
-            // if we were starting or ending, or now we aren't ending and the status
-            // changed, reset
-            if (last_quick_craft_status == QuickCraftStatusKind::Start
-                || last_quick_craft_status == QuickCraftStatusKind::End
-                || self.quick_craft_status != QuickCraftStatusKind::End)
-                && (self.quick_craft_status != last_quick_craft_status)
-            {
-                return self.reset_quick_craft();
-            }
-            if self.quick_craft_status == QuickCraftStatusKind::Start {
-                self.quick_craft_kind = quick_craft.kind.clone();
-                if self.quick_craft_kind == QuickCraftKind::Middle && player_abilities.instant_break
-                {
-                    self.quick_craft_status = QuickCraftStatusKind::Add;
-                    self.quick_craft_slots.clear();
-                } else {
-                    self.reset_quick_craft();
-                }
-                return;
-            }
-            if let QuickCraftStatus::Add { slot } = quick_craft.status {
-                let slot_item = self.menu().slot(slot as usize);
-                if let Some(slot_item) = slot_item {
-                    if let ItemStack::Present(carried) = &self.carried {
-                        // minecraft also checks slot.may_place(carried) and
-                        // menu.can_drag_to(slot)
-                        // but they always return true so they're not relevant for us
-                        if can_item_quick_replace(slot_item, &self.carried, true)
-                            && (self.quick_craft_kind == QuickCraftKind::Right
-                                || carried.count as usize > self.quick_craft_slots.len())
-                        {
-                            self.quick_craft_slots.insert(slot);
-                        }
-                    }
-                }
-                return;
-            }
-            if self.quick_craft_status == QuickCraftStatusKind::End {
-                if !self.quick_craft_slots.is_empty() {
-                    if self.quick_craft_slots.len() == 1 {
-                        // if we only clicked one slot, then turn this
-                        // QuickCraftClick into a PickupClick
-                        let slot = *self.quick_craft_slots.iter().next().unwrap();
-                        self.reset_quick_craft();
-                        self.simulate_click(
-                            &match self.quick_craft_kind {
-                                QuickCraftKind::Left => {
-                                    PickupClick::Left { slot: Some(slot) }.into()
-                                }
-                                QuickCraftKind::Right => {
-                                    PickupClick::Left { slot: Some(slot) }.into()
-                                }
-                                QuickCraftKind::Middle => {
-                                    // idk just do nothing i guess
-                                    return;
-                                }
-                            },
-                            player_abilities,
-                        );
-                        return;
-                    }
-
-                    let ItemStack::Present(mut carried) = self.carried.clone() else {
-                        // this should never happen
-                        return self.reset_quick_craft();
-                    };
-
-                    let mut carried_count = carried.count;
-                    let mut quick_craft_slots_iter = self.quick_craft_slots.iter();
-
-                    loop {
-                        let mut slot: &ItemStack;
-                        let mut slot_index: u16;
-                        let mut item_stack: &ItemStack;
-
-                        loop {
-                            let Some(&next_slot) = quick_craft_slots_iter.next() else {
-                                carried.count = carried_count;
-                                self.carried = ItemStack::Present(carried);
-                                return self.reset_quick_craft();
-                            };
-
-                            slot = self.menu().slot(next_slot as usize).unwrap();
-                            slot_index = next_slot;
-                            item_stack = &self.carried;
-
-                            if slot.is_present()
-                                    && can_item_quick_replace(slot, item_stack, true)
-                                    // this always returns true in most cases
-                                    // && slot.may_place(item_stack)
-                                    && (
-                                        self.quick_craft_kind == QuickCraftKind::Middle
-                                        || item_stack.count()  >= self.quick_craft_slots.len() as i32
-                                    )
-                            {
-                                break;
-                            }
-                        }
-
-                        // get the ItemStackData for the slot
-                        let ItemStack::Present(slot) = slot else {
-                            unreachable!("the loop above requires the slot to be present to break")
-                        };
-
-                        // if self.can_drag_to(slot) {
-                        let mut new_carried = carried.clone();
-                        let slot_item_count = slot.count;
-                        get_quick_craft_slot_count(
-                            &self.quick_craft_slots,
-                            &self.quick_craft_kind,
-                            &mut new_carried,
-                            slot_item_count,
-                        );
-                        let max_stack_size = i32::min(
-                            new_carried.kind.max_stack_size(),
-                            i32::min(
-                                new_carried.kind.max_stack_size(),
-                                slot.kind.max_stack_size(),
-                            ),
-                        );
-                        if new_carried.count > max_stack_size {
-                            new_carried.count = max_stack_size;
-                        }
-
-                        carried_count -= new_carried.count - slot_item_count;
-                        // we have to inline self.menu_mut() here to avoid the borrow checker
-                        // complaining
-                        let menu = match &mut self.container_menu {
-                            Some(menu) => menu,
-                            _ => &mut self.inventory_menu,
-                        };
-                        *menu.slot_mut(slot_index as usize).unwrap() =
-                            ItemStack::Present(new_carried);
-                    }
-                }
-            } else {
-                return self.reset_quick_craft();
-            }
-        }
-        // the quick craft status should always be in start if we're not in quick craft
-        // mode
-        if self.quick_craft_status != QuickCraftStatusKind::Start {
-            return self.reset_quick_craft();
-        }
-
-        match operation {
-            // left clicking outside inventory
-            ClickOperation::Pickup(PickupClick::Left { slot: None }) => {
-                if self.carried.is_present() {
-                    // vanilla has `player.drop`s but they're only used
-                    // server-side
-                    // they're included as comments here in case you want to adapt this for a server
-                    // implementation
-
-                    // player.drop(self.carried, true);
-                    self.carried = ItemStack::Empty;
-                }
-            }
-            ClickOperation::Pickup(PickupClick::Right { slot: None }) => {
-                if self.carried.is_present() {
-                    let _item = self.carried.split(1);
-                    // player.drop(item, true);
-                }
-            }
-            ClickOperation::Pickup(
-                PickupClick::Left { slot: Some(slot) } | PickupClick::Right { slot: Some(slot) },
-            ) => {
-                let Some(slot_item) = self.menu().slot(*slot as usize) else {
-                    return;
-                };
-                let carried = &self.carried;
-                // vanilla does a check called tryItemClickBehaviourOverride
-                // here
-                // i don't understand it so i didn't implement it
-                match slot_item {
-                    ItemStack::Empty => if carried.is_present() {},
-                    ItemStack::Present(_) => todo!(),
-                }
-            }
-            ClickOperation::QuickMove(
-                QuickMoveClick::Left { slot } | QuickMoveClick::Right { slot },
-            ) => {
-                // in vanilla it also tests if QuickMove has a slot index of -999
-                // but i don't think that's ever possible so it's not covered here
-                loop {
-                    let new_slot_item = self.menu_mut().quick_move_stack(*slot as usize);
-                    let slot_item = self.menu().slot(*slot as usize).unwrap();
-                    if new_slot_item.is_empty() || slot_item != &new_slot_item {
-                        break;
-                    }
-                }
-            }
-            ClickOperation::Swap(s) => {
-                let source_slot_index = s.source_slot as usize;
-                let target_slot_index = s.target_slot as usize;
-
-                let Some(source_slot) = self.menu().slot(source_slot_index) else {
-                    return;
-                };
-                let Some(target_slot) = self.menu().slot(target_slot_index) else {
-                    return;
-                };
-                if source_slot.is_empty() && target_slot.is_empty() {
-                    return;
-                }
-
-                if target_slot.is_empty() {
-                    if self.menu().may_pickup(source_slot_index) {
-                        let source_slot = source_slot.clone();
-                        let target_slot = self.menu_mut().slot_mut(target_slot_index).unwrap();
-                        *target_slot = source_slot;
-                    }
-                } else if source_slot.is_empty() {
-                    let ItemStack::Present(target_item) = target_slot else {
-                        unreachable!("target slot is not empty but is not present");
-                    };
-                    if self.menu().may_place(source_slot_index, target_item) {
-                        // get the target_item but mutable
-                        let source_max_stack_size = self.menu().max_stack_size(source_slot_index);
-
-                        let target_slot = self.menu_mut().slot_mut(target_slot_index).unwrap();
-                        let new_source_slot = target_slot.split(source_max_stack_size);
-                        *self.menu_mut().slot_mut(source_slot_index).unwrap() = new_source_slot;
-                    }
-                } else if self.menu().may_pickup(source_slot_index) {
-                    let ItemStack::Present(target_item) = target_slot else {
-                        unreachable!("target slot is not empty but is not present");
-                    };
-                    if self.menu().may_place(source_slot_index, target_item) {
-                        let source_max_stack = self.menu().max_stack_size(source_slot_index);
-                        if target_slot.count() > source_max_stack as i32 {
-                            // if there's more than the max stack size in the target slot
-
-                            let target_slot = self.menu_mut().slot_mut(target_slot_index).unwrap();
-                            let new_source_slot = target_slot.split(source_max_stack);
-                            *self.menu_mut().slot_mut(source_slot_index).unwrap() = new_source_slot;
-                            // if !self.inventory_menu.add(new_source_slot) {
-                            //     player.drop(new_source_slot, true);
-                            // }
-                        } else {
-                            // normal swap
-                            let new_target_slot = source_slot.clone();
-                            let new_source_slot = target_slot.clone();
-
-                            let target_slot = self.menu_mut().slot_mut(target_slot_index).unwrap();
-                            *target_slot = new_target_slot;
-
-                            let source_slot = self.menu_mut().slot_mut(source_slot_index).unwrap();
-                            *source_slot = new_source_slot;
-                        }
-                    }
-                }
-            }
-            ClickOperation::Clone(CloneClick { slot }) => {
-                if !player_abilities.instant_break || self.carried.is_present() {
-                    return;
-                }
-                let Some(source_slot) = self.menu().slot(*slot as usize) else {
-                    return;
-                };
-                let ItemStack::Present(source_item) = source_slot else {
-                    return;
-                };
-                let mut new_carried = source_item.clone();
-                new_carried.count = new_carried.kind.max_stack_size();
-                self.carried = ItemStack::Present(new_carried);
-            }
-            ClickOperation::Throw(c) => {
-                if self.carried.is_present() {
-                    return;
-                }
-
-                let (ThrowClick::Single { slot: slot_index }
-                | ThrowClick::All { slot: slot_index }) = c;
-                let slot_index = *slot_index as usize;
-
-                let Some(slot) = self.menu_mut().slot_mut(slot_index) else {
-                    return;
-                };
-                let ItemStack::Present(slot_item) = slot else {
-                    return;
-                };
-
-                let dropping_count = match c {
-                    ThrowClick::Single { .. } => 1,
-                    ThrowClick::All { .. } => slot_item.count,
-                };
-
-                let _dropping = slot_item.split(dropping_count as u32);
-                // player.drop(dropping, true);
-            }
-            ClickOperation::PickupAll(PickupAllClick {
-                slot: source_slot_index,
-                reversed,
-            }) => {
-                let source_slot_index = *source_slot_index as usize;
-
-                let source_slot = self.menu().slot(source_slot_index).unwrap();
-                let target_slot = self.carried.clone();
-
-                if target_slot.is_empty()
-                    || (source_slot.is_present() && self.menu().may_pickup(source_slot_index))
-                {
-                    return;
-                }
-
-                let ItemStack::Present(target_slot_item) = &target_slot else {
-                    unreachable!("target slot is not empty but is not present");
-                };
-
-                for round in 0..2 {
-                    let iterator: Box<dyn Iterator<Item = usize>> = if *reversed {
-                        Box::new((0..self.menu().len()).rev())
-                    } else {
-                        Box::new(0..self.menu().len())
-                    };
-
-                    for i in iterator {
-                        if target_slot_item.count < target_slot_item.kind.max_stack_size() {
-                            let checking_slot = self.menu().slot(i).unwrap();
-                            if let ItemStack::Present(checking_item) = checking_slot {
-                                if can_item_quick_replace(checking_slot, &target_slot, true)
-                                    && self.menu().may_pickup(i)
-                                    && (round != 0
-                                        || checking_item.count
-                                            != checking_item.kind.max_stack_size())
-                                {
-                                    // get the checking_slot and checking_item again but mutable
-                                    let checking_slot = self.menu_mut().slot_mut(i).unwrap();
-
-                                    let taken_item =
-                                        checking_slot.split(checking_slot.count() as u32);
-
-                                    // now extend the carried item
-                                    let target_slot = &mut self.carried;
-                                    let ItemStack::Present(target_slot_item) = target_slot else {
-                                        unreachable!("target slot is not empty but is not present");
-                                    };
-                                    target_slot_item.count += taken_item.count();
-                                }
-                            }
-                        }
-                    }
-                }
-            }
-            _ => {}
-        }
-    }
-
-    fn reset_quick_craft(&mut self) {
-        self.quick_craft_status = QuickCraftStatusKind::Start;
-        self.quick_craft_slots.clear();
-    }
-
-    /// Get the item in the player's hotbar that is currently being held.
-    pub fn held_item(&self) -> ItemStack {
-        let inventory = &self.inventory_menu;
-        let hotbar_items = &inventory.slots()[inventory.hotbar_slots_range()];
-        hotbar_items[self.selected_hotbar_slot as usize].clone()
-    }
-}
-
-fn can_item_quick_replace(
-    target_slot: &ItemStack,
-    item: &ItemStack,
-    ignore_item_count: bool,
-) -> bool {
-    let ItemStack::Present(target_slot) = target_slot else {
-        return false;
-    };
-    let ItemStack::Present(item) = item else {
-        // i *think* this is what vanilla does
-        // not 100% sure lol probably doesn't matter though
-        return false;
-    };
-
-    if !item.is_same_item_and_components(target_slot) {
-        return false;
-    }
-    let count = target_slot.count as u16
-        + if ignore_item_count {
-            0
-        } else {
-            item.count as u16
-        };
-    count <= item.kind.max_stack_size() as u16
-}
-
-fn get_quick_craft_slot_count(
-    quick_craft_slots: &HashSet<u16>,
-    quick_craft_kind: &QuickCraftKind,
-    item: &mut ItemStackData,
-    slot_item_count: i32,
-) {
-    item.count = match quick_craft_kind {
-        QuickCraftKind::Left => item.count / quick_craft_slots.len() as i32,
-        QuickCraftKind::Right => 1,
-        QuickCraftKind::Middle => item.kind.max_stack_size(),
-    };
-    item.count += slot_item_count;
-}
-
-impl Default for Inventory {
-    fn default() -> Self {
-        Inventory {
-            inventory_menu: Menu::Player(azalea_inventory::Player::default()),
-            id: 0,
-            container_menu: None,
-            container_menu_title: None,
-            carried: ItemStack::Empty,
-            state_id: 0,
-            quick_craft_status: QuickCraftStatusKind::Start,
-            quick_craft_kind: QuickCraftKind::Middle,
-            quick_craft_slots: HashSet::new(),
-            selected_hotbar_slot: 0,
-        }
-    }
-}
-
-/// Sent from the server when a menu (like a chest or crafting table) was
-/// opened by the client.
-#[derive(Event, Debug)]
-pub struct MenuOpenedEvent {
-    pub entity: Entity,
-    pub window_id: i32,
-    pub menu_type: MenuKind,
-    pub title: FormattedText,
-}
-fn handle_menu_opened_event(
-    mut events: EventReader<MenuOpenedEvent>,
-    mut query: Query<&mut Inventory>,
-) {
-    for event in events.read() {
-        let mut inventory = query.get_mut(event.entity).unwrap();
-        inventory.id = event.window_id;
-        inventory.container_menu = Some(Menu::from_kind(event.menu_type));
-        inventory.container_menu_title = Some(event.title.clone());
-    }
-}
-
-/// Tell the server that we want to close a container.
-///
-/// Note that this is also sent when the client closes its own inventory, even
-/// though there is no packet for opening its inventory.
-#[derive(Event)]
-pub struct CloseContainerEvent {
-    pub entity: Entity,
-    /// The ID of the container to close. 0 for the player's inventory. If this
-    /// is not the same as the currently open inventory, nothing will happen.
-    pub id: i32,
-}
-fn handle_container_close_event(
-    query: Query<(Entity, &Inventory)>,
-    mut events: EventReader<CloseContainerEvent>,
-    mut client_side_events: EventWriter<ClientSideCloseContainerEvent>,
-    mut send_packet_events: EventWriter<SendPacketEvent>,
-) {
-    for event in events.read() {
-        let (entity, inventory) = query.get(event.entity).unwrap();
-        if event.id != inventory.id {
-            warn!(
-                "Tried to close container with ID {}, but the current container ID is {}",
-                event.id, inventory.id
-            );
-            continue;
-        }
-
-        send_packet_events.send(SendPacketEvent::new(
-            entity,
-            ServerboundContainerClose {
-                container_id: inventory.id,
-            },
-        ));
-        client_side_events.send(ClientSideCloseContainerEvent {
-            entity: event.entity,
-        });
-    }
-}
-
-/// Close a container without notifying the server.
-///
-/// Note that this also gets fired when we get a [`CloseContainerEvent`].
-#[derive(Event)]
-pub struct ClientSideCloseContainerEvent {
-    pub entity: Entity,
-}
-pub fn handle_client_side_close_container_event(
-    mut events: EventReader<ClientSideCloseContainerEvent>,
-    mut query: Query<&mut Inventory>,
-) {
-    for event in events.read() {
-        let mut inventory = query.get_mut(event.entity).unwrap();
-        inventory.container_menu = None;
-        inventory.id = 0;
-        inventory.container_menu_title = None;
-    }
-}
-
-#[derive(Event, Debug)]
-pub struct ContainerClickEvent {
-    pub entity: Entity,
-    pub window_id: i32,
-    pub operation: ClickOperation,
-}
-pub fn handle_container_click_event(
-    mut query: Query<(Entity, &mut Inventory)>,
-    mut events: EventReader<ContainerClickEvent>,
-    mut send_packet_events: EventWriter<SendPacketEvent>,
-) {
-    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 {}",
-                event.window_id, inventory.id
-            );
-            continue;
-        }
-
-        let menu = inventory.menu_mut();
-        let old_slots = menu.slots().clone();
-
-        // menu.click(&event.operation);
-
-        // 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();
-        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());
-            }
-        }
-
-        send_packet_events.send(SendPacketEvent::new(
-            entity,
-            ServerboundContainerClick {
-                container_id: event.window_id,
-                state_id: inventory.state_id,
-                slot_num: event.operation.slot_num().map(|n| n as i16).unwrap_or(-999),
-                button_num: event.operation.button_num(),
-                click_type: event.operation.click_type(),
-                changed_slots,
-                carried_item: inventory.carried.clone(),
-            },
-        ));
-    }
-}
-
-/// Sent from the server when the contents of a container are replaced. Usually
-/// triggered by the `ContainerSetContent` packet.
-#[derive(Event)]
-pub struct SetContainerContentEvent {
-    pub entity: Entity,
-    pub slots: Vec<ItemStack>,
-    pub container_id: i32,
-}
-fn handle_set_container_content_event(
-    mut events: EventReader<SetContainerContentEvent>,
-    mut query: Query<&mut Inventory>,
-) {
-    for event in events.read() {
-        let mut inventory = query.get_mut(event.entity).unwrap();
-
-        if event.container_id != inventory.id {
-            warn!(
-                "Tried to set container content with ID {}, but the current container ID is {}",
-                event.container_id, inventory.id
-            );
-            continue;
-        }
-
-        let menu = inventory.menu_mut();
-        for (i, slot) in event.slots.iter().enumerate() {
-            if let Some(slot_mut) = menu.slot_mut(i) {
-                *slot_mut = slot.clone();
-            }
-        }
-    }
-}
-
-#[derive(Event)]
-pub struct SetSelectedHotbarSlotEvent {
-    pub entity: Entity,
-    /// The hotbar slot to select. This should be in the range 0..=8.
-    pub slot: u8,
-}
-fn handle_set_selected_hotbar_slot_event(
-    mut events: EventReader<SetSelectedHotbarSlotEvent>,
-    mut send_packet_events: EventWriter<SendPacketEvent>,
-    mut query: Query<&mut Inventory>,
-) {
-    for event in events.read() {
-        let mut inventory = query.get_mut(event.entity).unwrap();
-
-        // if the slot is already selected, don't send a packet
-        if inventory.selected_hotbar_slot == event.slot {
-            continue;
-        }
-
-        inventory.selected_hotbar_slot = event.slot;
-        send_packet_events.send(SendPacketEvent::new(
-            event.entity,
-            ServerboundSetCarriedItem {
-                slot: event.slot as u16,
-            },
-        ));
-    }
-}