src/runner/instance.rs

@@ -333,8 +333,20 @@ impl DataModel{
 }
 
 class!(Workspace);
-class_composition!(Workspace,(Instance));
-
+class_composition!(Workspace,(Instance,Workspace));
+impl Workspace{
+	fn composition_add_fields<'lua,T:Referent,F:mlua::UserDataFields<'lua,T>>(fields:&mut F){
+		fields.add_field_method_get("Terrain",|lua,this|{
+			dom(lua,|dom|{
+				Ok(find_first_child_of_class(dom,this.get(dom)?,"Terrain")
+					.map(|inst|Terrain::new(inst.referent()))
+				)
+			})
+		});
+	}
+	fn composition_add_methods<'lua,T,M:mlua::UserDataMethods<'lua,T>>(_methods:&mut M){
+	}
+}
 class!(Lighting);
 class_composition!(Lighting,(Instance));