chore: doxygen documentation for level3d

level.hpp

@@ -7,6 +7,10 @@
 namespace gd = godot;
 
 namespace utils {
+/*! 3D level root to be used with GameRoot3D.
+ *
+ * The configured game mode will become the active GameMode in GameRoot3D if one does not exist yet.
+ */
 class Level3D : public gd::Node3D {
     GDCLASS(Level3D, gd::Node3D);
     static void _bind_methods();
@@ -14,7 +18,7 @@ public:
     void set_game_mode_prototype(gd::Ref<GameMode> prototype);
     gd::Ref<GameMode> get_game_mode_prototype() const;
 private:
-    gd::Ref<GameMode> game_mode_prototype{};
+    gd::Ref<GameMode> game_mode_prototype{}; //!< The starting state of the game mode to instantiate if this is the "leading" level.
 };
 }