[nostalgia] Integrate Ox Preloader

src/nostalgia/core/assetmanager.hpp

@@ -17,6 +17,7 @@ class AssetManager;
 template<typename T>
 class AssetRef;
 
+#ifndef OX_BARE_METAL
 template<typename T>
 class AssetContainer {
 
@@ -260,5 +261,36 @@ class AssetManager {
 			}
 		}
 };
+#else
+template<typename T>
+class AssetRef: public ox::SignalHandler {
+	private:
+		T &m_obj;
+
+	public:
+		explicit constexpr AssetRef(T &obj) noexcept: m_obj(obj) {
+		}
+
+		constexpr const T *get() const noexcept {
+			return &m_obj;
+		}
+
+		constexpr const T &operator*() const & noexcept {
+			return &m_obj;
+		}
+
+		constexpr const T &&operator*() const && noexcept {
+			return &m_obj;
+		}
+
+		constexpr const T *operator->() const noexcept {
+			return &m_obj;
+		}
+
+		explicit constexpr operator bool() const noexcept {
+			return m_obj;
+		}
+};
+#endif
 
 }