Better FS::ReadDirectory

include/fs/archive_base.hpp

@@ -116,15 +116,35 @@ struct ArchiveSession {
     ArchiveSession(ArchiveBase* archive, const FSPath& filePath, bool isOpen = true) : archive(archive), path(filePath), isOpen(isOpen) {}
 };
 
+struct DirectoryEntry {
+	std::filesystem::path path;
+	bool isDirectory;
+};
+
 struct DirectorySession {
     ArchiveBase* archive = nullptr;
     // For directories which are mirrored to a specific path on the disk, this contains that path
     // Otherwise this is a nullopt
     std::optional<std::filesystem::path> pathOnDisk;
+
+    // Iterators for traversing the directory in Directory::Read
+	std::vector<DirectoryEntry> entries;
+	size_t currentEntry;
+
     bool isOpen;
 
     DirectorySession(ArchiveBase* archive, std::filesystem::path path, bool isOpen = true) : archive(archive), pathOnDisk(path),
-        isOpen(isOpen) {}
+        isOpen(isOpen) {
+		currentEntry = 0; // Start from entry 0
+        
+        // Read all directory entries, cache them
+        for (auto& e : std::filesystem::directory_iterator(path)) {
+			DirectoryEntry entry;
+			entry.path = e.path();
+			entry.isDirectory = std::filesystem::is_directory(e);
+			entries.push_back(entry);
+        }
+    }
 };
 
 // Represents a file descriptor obtained from OpenFile. If the optional is nullopt, opening the file failed.