Fix for WASM compilation

src/saveload_system.rs

@@ -37,6 +37,10 @@ macro_rules! deserialize_individually {
     };
 }
 
+#[cfg(target_arch = "wasm32")]
+pub fn save_game(_ecs: &mut World) {}
+
+#[cfg(not(target_arch = "wasm32"))]
 pub fn save_game(ecs: &mut World) {
     // Create helper
     let mapcopy = ecs.get_mut::<crate::map::Map>().unwrap().clone();