fix State incorrectly being reused when calling handlers in swarm

Author: mat-1

azalea-core/src/position.rs

@@ -168,7 +168,7 @@ impl Vec3 {
         f64::sqrt(self.x * self.x + self.y * self.y + self.z * self.z)
     }
 
-    /// Get the squared distance from this position to another position.
+    /// Get the distance from this position to another position.
     /// Equivalent to `(self - other).length()`.
     pub fn distance_to(&self, other: &Self) -> f64 {
         (self - other).length()

azalea/src/swarm/mod.rs

@@ -387,12 +387,19 @@ where
         });
 
         // bot events
-        while let Some((Some(event), bot)) = bots_rx.recv().await {
+        while let Some((Some(first_event), first_bot)) = bots_rx.recv().await {
             if let Some(handler) = &self.handler {
-                let state = bot.component::<S>();
-                tokio::spawn((handler)(bot, event, state.clone()));
+                let first_bot_state = first_bot.component::<S>();
+                let first_bot_entity = first_bot.entity;
+                tokio::spawn((handler)(first_bot, first_event, first_bot_state.clone()));
+
                 // this makes it not have to keep locking the ecs
+                let mut states = HashMap::new();
+                states.insert(first_bot_entity, first_bot_state);
                 while let Ok((Some(event), bot)) = bots_rx.try_recv() {
+                    let state = states
+                        .entry(bot.entity)
+                        .or_insert_with(|| bot.component::<S>().clone());
                     tokio::spawn((handler)(bot, event, state.clone()));
                 }
             }