refactor(engine): use new Single get* fns

1 files changed, 17 insertions, 2 deletions

diff --git a/engine/src/rendering/shader.rs b/engine/src/rendering/shader.rs
index 961bea2..6b68e1e 100644
--- a/engine/src/rendering/shader.rs
+++ b/engine/src/rendering/shader.rs
@@ -1016,14 +1016,27 @@ pub(super) fn prepare(collector: &mut crate::ecs::extension::Collector<'_>)
     );
 }
 
-fn initialize(mut assets: Single<Assets>)
+fn initialize(mut assets: Single<Assets>) -> Result<(), crate::Error>
 {
+    let assets = assets.get_mut()?;
+
     assets.set_importer::<_, _>(["slang"], import_slang_asset);
+
+    Ok(())
 }
 
 #[tracing::instrument(skip_all)]
-fn load_modules(mut context: Single<Context>, assets: Single<Assets>)
+fn load_modules(
+    mut context: Single<Context>,
+    assets: Single<Assets>,
+) -> Result<(), crate::Error>
 {
+    let Ok(context) = context.get_mut() else {
+        unreachable!();
+    };
+
+    let assets = assets.get()?;
+
     for AssetEvent::Stored(asset_id, asset_label) in assets.events().last_tick_events() {
         let asset_handle = AssetHandle::<ModuleSource>::from_id(*asset_id);
 
@@ -1124,6 +1137,8 @@ fn load_modules(mut context: Single<Context>, assets: Single<Assets>)
             );
         }
     }
+
+    Ok(())
 }
 
 fn load_module(