From cf66c4be100c898c64d57f9b92f31f809764dc2e Mon Sep 17 00:00:00 2001
From: mat <git@matdoes.dev>
Date: Thu, 6 Mar 2025 04:11:05 +0000
Subject: fix despawning entities on dimension change

---
 azalea-client/src/plugins/packet/game/mod.rs | 47 +++++++++++++++++++---------
 1 file changed, 33 insertions(+), 14 deletions(-)

(limited to 'azalea-client/src/plugins/packet')

diff --git a/azalea-client/src/plugins/packet/game/mod.rs b/azalea-client/src/plugins/packet/game/mod.rs
index c3381e59..a13f1490 100644
--- a/azalea-client/src/plugins/packet/game/mod.rs
+++ b/azalea-client/src/plugins/packet/game/mod.rs
@@ -207,18 +207,22 @@ impl GamePacketHandler<'_> {
 
         as_system::<(
             Commands,
-            Query<(
-                &GameProfileComponent,
-                &ClientInformation,
-                Option<&mut InstanceName>,
-                Option<&mut LoadedBy>,
-                &mut EntityIdIndex,
-                &mut InstanceHolder,
-            )>,
+            Query<
+                (
+                    &GameProfileComponent,
+                    &ClientInformation,
+                    Option<&mut InstanceName>,
+                    Option<&mut LoadedBy>,
+                    &mut EntityIdIndex,
+                    &mut InstanceHolder,
+                ),
+                With<LocalEntity>,
+            >,
             EventWriter<InstanceLoadedEvent>,
             ResMut<InstanceContainer>,
             ResMut<EntityUuidIndex>,
             EventWriter<SendPacketEvent>,
+            Query<&mut LoadedBy, Without<LocalEntity>>,
         )>(
             self.ecs,
             |(
@@ -228,6 +232,7 @@ impl GamePacketHandler<'_> {
                 mut instance_container,
                 mut entity_uuid_index,
                 mut send_packet_events,
+                mut loaded_by_query,
             )| {
                 let (
                     game_profile,
@@ -317,6 +322,11 @@ impl GamePacketHandler<'_> {
                     &mut instance_holder.instance.write(),
                 );
 
+                // every entity is now unloaded by this player
+                for mut loaded_by in &mut loaded_by_query.iter_mut() {
+                    loaded_by.remove(&self.player);
+                }
+
                 // update or insert loaded_by
                 if let Some(mut loaded_by) = loaded_by {
                     loaded_by.insert(self.player);
@@ -1413,16 +1423,20 @@ impl GamePacketHandler<'_> {
 
         as_system::<(
             Commands,
-            Query<(
-                &mut InstanceHolder,
-                &GameProfileComponent,
-                &ClientInformation,
-            )>,
+            Query<
+                (
+                    &mut InstanceHolder,
+                    &GameProfileComponent,
+                    &ClientInformation,
+                ),
+                With<LocalEntity>,
+            >,
             EventWriter<_>,
             ResMut<InstanceContainer>,
+            Query<&mut LoadedBy, Without<LocalEntity>>,
         )>(
             self.ecs,
-            |(mut commands, mut query, mut events, mut instance_container)| {
+            |(mut commands, mut query, mut events, mut instance_container, mut loaded_by_query)| {
                 let (mut instance_holder, game_profile, client_information) =
                     query.get_mut(self.player).unwrap();
 
@@ -1461,6 +1475,11 @@ impl GamePacketHandler<'_> {
                 );
                 instance_holder.instance = weak_instance;
 
+                // every entity is now unloaded by this player
+                for mut loaded_by in &mut loaded_by_query.iter_mut() {
+                    loaded_by.remove(&self.player);
+                }
+
                 // this resets a bunch of our components like physics and stuff
                 let entity_bundle = EntityBundle::new(
                     game_profile.uuid,
-- 
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