unreal-engine-cpp-prolisted

# Unreal Engine C++ Pro This skill provides expert-level guidelines for developing with Unreal Engine 5 using C++. It focuses on writing robust, performant, and standard-compliant code. ## When to Use Use this skill when: - Developing C++ code for Unreal Engine 5.x projects - Writing Actors, Components, or UObject-derived classes - Optimizing performance-critical code in Unreal Engine - Debugging memory leaks or garbage collection issues - Implementing Blueprint-exposed functionality - Following Epic Games' coding standards and conventions - Working with Unreal's reflection system (UCLASS, USTRUCT, UFUNCTION) - Managing asset loading and soft references Do not use this skill when: - Working with Blueprint-only projects (no C++ code) - Developing for Unreal Engine versions prior to 5.x - Working on non-Unreal game engines - The task is unrelated to Unreal Engine development ## Core Principles 1. **UObject & Garbage Collection**: * Always use `UPROPERTY()` for `UObject*` member variables to ensure they are tracked by the Garbage Collector (GC). * Use `TStrongObjectPtr<>` if you need to keep a root reference outside of a UObject graph, but prefer `addToRoot()` generally. * Understand the `IsValid()` check vs `nullptr`. `IsValid()` handles pending kill state safely. 2. **Unreal Reflection System**: * Use `UCLASS()`, `USTRUCT()`, `UENUM()`, `UFUNCTION()` to expose types to the reflection system and Blueprints. * Minimize `BlueprintReadWrite`