add CENTER_WORLD_ON_PLAYER constant

src/world.rs

@@ -10,6 +10,8 @@ const ASTEROID_UPDATE_INTERVAL: f32 = 1.0; // seconds
 const ASTEROID_SIZE: f32 = 100.0;
 const STARS_MAX_MAGNITUDE: f32 = 5.5;
 
+const CENTER_WORLD_ON_PLAYER: bool = true;
+
 const ASSET_ASTEROID1: &str = "models/asteroid.glb#Scene0";
 const ASSET_ASTEROID2: &str = "models/asteroid2.glb#Scene0";
 pub fn asset_name_to_path(name: &str) -> &'static str {
@@ -42,15 +44,17 @@ impl Plugin for WorldPlugin {
                 Timer::from_seconds(ASTEROID_UPDATE_INTERVAL, TimerMode::Repeating)));
         app.insert_resource(AsteroidDatabase(Vec::new()));
 
-        // Disable bevy_xpbd's position->transform sync because we have a
-        // custom syncing function.
+        if CENTER_WORLD_ON_PLAYER {
+            // Disable bevy_xpbd's position->transform sync function
             app.insert_resource(SyncConfig {
                 position_to_transform: false,
                 transform_to_position: false,
             });
+            // Add own position->transform sync function
             app.add_systems(PreUpdate, position_to_transform);
         }
     }
+}
 
 #[derive(Resource)] struct AsteroidUpdateTimer(Timer);
 #[derive(Resource)] struct AsteroidDatabase(Vec<AsteroidData>);