refactor

src/world.rs

@@ -15,7 +15,9 @@ use crate::components::{
     CameraComponent, InputComponent, JumpComponent, MeshComponent, MovementComponent,
     PhysicsComponent, RotateComponent,
 };
+use crate::debug::DebugMode;
 use crate::entity::{EntityHandle, EntityManager};
+use crate::render::snow::SnowLayer;
 use crate::state::StateMachine;
 
 pub use crate::utility::transform::Transform;
@@ -107,6 +109,10 @@ pub struct World
     pub bubble_tags: Storage<()>,
     pub projectile_tags: Storage<()>,
     pub dialog_outcomes: Vec<DialogOutcomeEvent>,
+
+    // --- singleton state (not per-entity) ---
+    pub snow_layer: Option<SnowLayer>,
+    pub debug_mode: DebugMode,
 }
 
 impl World
@@ -145,6 +151,8 @@ impl World
             bubble_tags: Storage::new(),
             projectile_tags: Storage::new(),
             dialog_outcomes: Vec::new(),
+            snow_layer: None,
+            debug_mode: DebugMode::default(),
         }
     }