[nostalgia/core] Add Fill command to tilesheet editor and make ClipboardObject more efficient

src/nostalgia/core/context.hpp

@@ -17,6 +17,25 @@ class Size;
 
 namespace nostalgia::core {
 
+class BaseClipboardObject {
+	public:
+		virtual ~BaseClipboardObject() = default;
+
+		virtual ox::String typeId() const noexcept = 0;
+
+		constexpr auto typeMatch(auto name, auto version) const noexcept {
+			auto inId = ox::sfmt("{};{}", name, version);
+			return typeId() == inId;
+		}
+};
+
+template<typename T>
+class ClipboardObject: public BaseClipboardObject {
+	ox::String typeId() const noexcept final {
+		return ox::sfmt("{};{}", T::TypeName, T::TypeVersion);
+	}
+};
+
 class Context;
 class Drawer;
 
@@ -59,7 +78,7 @@ class Context {
 #ifndef OX_BARE_METAL
 		AssetManager assetManager;
 		int uninterruptedRefreshes = 0;
-		ox::Buffer clipboard;
+		ox::UniquePtr<BaseClipboardObject> clipboard;
 #endif
 	protected:
 #ifndef OX_BARE_METAL