Game C++ Standards

1. Memory Management

• •Unreal Garbage Collection:
  • •Use UPROPERTY() on all UObject* member variables to prevent them from being garbage collected.
  • •Use TWeakObjectPtr<> if you do not want to hold a hard reference.
• •Smart Pointers:
  • •For non-UObjects, use TSharedPtr<>, TSharedRef<>, TUniquePtr<>.
  • •Avoid raw new / delete unless absolutely necessary (and wrapped immediately).

2. Unreal Header Tool (UHT)

• •Macros: Ensure GENERATED_BODY() is at the top of the class.
• •Reflection: Use UPROPERTY() on variables you want to expose to Blueprints or the Editor.
  • •EditAnywhere, BlueprintReadWrite, Category="Config" are standard.
• •Functions: Use UFUNCTION() to expose to Blueprints.
  • •BlueprintCallable, BlueprintPure.

3. Performance

• •Ticking:
  • •Disable PrimaryActorTick.bCanEverTick = false; if the actor does not need to update every frame.
  • •Use Timers (GetWorld()->GetTimerManager()) for periodic events instead of checking DeltaTime in Tick.
• •Casts:
  • •Avoid Cast<T>(Obj) in Tick(). Cache references in BeginPlay().
• •Logs:
  • •Use UE_LOG(LogTemp, Warning, TEXT("Message %s"), *StringVariable); sparseley in hot loops.

4. Data Structures

• •TArray: Standard dynamic array.
• •TMap: Key-Value pairs.
• •TSet: Unique elements.
• •FString vs FName vs FText:
  • •FString: Mutable, expensive. Manipulation.
  • •FName: Immutable, fast comparison. IDs/Keys.
  • •FText: Localization. UI display.

5. Code Style

• •Braces: BSD/Allman style (brace on new line).
• •Const: Use const correctness whenever possible.
• •Headers: Include minimal headers in .h. Use forward declarations (class AMyActor;) to reduce compile times.