Remove calls to \.single.

src/exploration.rs

@@ -265,7 +265,7 @@ fn exploration_focus<S, A: 'static>(
         config.action_explore_right.clone(),
     ) {
         for map in map.iter() {
-            let (entity, coordinates, exploring) = explorers.single();
+            if let Ok((entity, coordinates, exploring)) = explorers.get_single() {
                 let coordinates = **coordinates;
                 let mut exploring = if let Some(exploring) = exploring {
                     **exploring
@@ -293,6 +293,7 @@ fn exploration_focus<S, A: 'static>(
             }
         }
     }
+}
 
 fn navigate_to_explored<S, A: 'static>(
     mut commands: Commands,

src/map.rs

@@ -454,7 +454,6 @@ fn area_description(
             })
         {
             if players.get(other).is_ok() {
-                let mut log = log.single_mut();
                 if let Ok((aabb, area_name)) = areas.get(area) {
                     let name = if let Some(name) = area_name {
                         Some(name.to_string())
@@ -464,6 +463,7 @@ fn area_description(
                         None
                     };
                     if let Some(name) = name {
+                        if let Ok(mut log) = log.get_single_mut() {
                             if event.intersecting {
                                 log.push(format!("Entering {name}."));
                             } else {
@@ -475,6 +475,7 @@ fn area_description(
             }
         }
     }
+}
 
 pub struct MapPlugin;
 

src/visibility.rs

@@ -379,7 +379,6 @@ fn log_visible(
                     continue;
                 }
                 if let Ok((name, body_position, collider_position)) = visible.get(*viewed) {
-                    let mut log = log.single_mut();
                     let viewed_coordinates = if let Some(p) = body_position {
                         (p.position.translation.x, p.position.translation.y)
                     } else if let Some(p) = collider_position {
@@ -391,8 +390,10 @@ fn log_visible(
                     let yaw = Angle::Radians(forward.y.atan2(forward.x));
                     let location =
                         viewer_coordinates.direction_and_distance(&viewed_coordinates, Some(yaw));
+                    if let Ok(mut log) = log.get_single_mut() {
                         log.push(format!("{}: {location}", **name));
                     }
+                }
             } else if let VisibilityChanged::Lost { viewed, .. } = event {
                 recently_lost.insert(*viewed, Timer::from_seconds(2., false));
             }