feature gate

bevyengine · Jun 3, 2024 · bda68df · bda68df
1 parent 4ad8ad2
commit bda68df
Showing 1 changed file with 8 additions and 6 deletions.
diff --git a/crates/bevy_state/src/app.rs b/crates/bevy_state/src/app.rs
@@ -5,13 +5,12 @@ use bevy_ecs::{
     world::FromWorld,
 };
 
-use crate::{
-    state::{
-        setup_state_transitions_in_world, ComputedStates, FreelyMutableState, NextState, State,
-        StateTransition, StateTransitionEvent, StateTransitionSteps, States, SubStates,
-    },
-    state_bound::clear_state_bound_entities,
+use crate::state::{
+    setup_state_transitions_in_world, ComputedStates, FreelyMutableState, NextState, State,
+    StateTransition, StateTransitionEvent, StateTransitionSteps, States, SubStates,
 };
+#[cfg(feature = "bevy_hierarchy")]
+use crate::state_bound::clear_state_bound_entities;
 
 /// State installation methods for [`App`](bevy_app::App) and [`SubApp`](bevy_app::SubApp).
 pub trait AppExtStates {
@@ -52,6 +51,7 @@ pub trait AppExtStates {
     /// This method is idempotent: it has no effect when called again using the same generic type.
     fn add_sub_state<S: SubStates>(&mut self) -> &mut Self;
 
+    #[cfg(feature = "bevy_hierarchy")]
     /// Register state bound entity clearing for state `S`.
     ///
     /// For more information refer to [`StateBound`](crate::state_bound::StateBound).
@@ -133,6 +133,7 @@ impl AppExtStates for SubApp {
         self
     }
 
+    #[cfg(feature = "bevy_hierarchy")]
     fn add_state_bound<S: States>(&mut self) -> &mut Self {
         self.add_systems(
             StateTransition,
@@ -162,6 +163,7 @@ impl AppExtStates for App {
         self
     }
 
+    #[cfg(feature = "bevy_hierarchy")]
     fn add_state_bound<S: States>(&mut self) -> &mut Self {
         self.main_mut().add_state_bound::<S>();
         self