# Release v4.1.0: Internationalization & Game Development

> **Vietnamese translations and Unreal Engine C++ expertise added to the skills collection**

This release brings comprehensive Vietnamese language support for documentation and adds professional Unreal Engine 5.x C++ development guidance, expanding the repository's international reach and game development capabilities.

## 🚀 New Skills

### 🎮 [unreal-engine-cpp-pro](skills/unreal-engine-cpp-pro/)

**Expert-level Unreal Engine 5.x C++ development guide**

Comprehensive guide for developing robust, performant C++ code in Unreal Engine 5. Covers UObject hygiene, garbage collection patterns, performance optimization, and Epic Games' coding standards.

- **UObject & Garbage Collection**: Proper UPROPERTY usage, TStrongObjectPtr patterns, IsValid() checks
- **Performance Optimization**: Tick management, casting optimization, struct vs class decisions
- **Naming Conventions**: Strict adherence to Epic Games' coding standards (T, U, A, F, E, I prefixes)
- **Common Patterns**: Component lookup, interface implementation, async loading with soft references
- **Example Code**: Complete Actor implementation demonstrating best practices

> **Try it:** `"Help me write a C++ Actor class for Unreal Engine 5"` or `"Show me how to properly use UPROPERTY in Unreal Engine"`

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## 📦 Improvements

- **Registry Update**: Now tracking 560 skills (was 559).
- **Internationalization**: Added comprehensive Vietnamese translations for all core documentation
- **Documentation Structure**: Reorganized Vietnamese translations from `docs/vi/` to `docs/vietnamese/` for consistency
- **Translation Coverage**: Vietnamese versions now available for README, GETTING_STARTED, CONTRIBUTING, FAQ, SECURITY, QUALITY_BAR, SKILL_ANATOMY, and more

## 👥 Credits

A huge shoutout to our community contributors:

- **@Dokhacgiakhoa** for comprehensive Vietnamese translations (PR #38)
- **@junited31** for `unreal-engine-cpp-pro` skill (PR #39)

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_Upgrade now: `git pull origin main` to fetch the latest skills._