Question: Does Unreal Engine Use C++?

Answer

Unreal Engine is well known for utilizing C++ as its primary programming language. Developers use C++ to script gameplay mechanics, create custom systems, and extend the functionality of the engine itself.

Why C++ in Unreal Engine?

• Performance: C++ is renowned for its performance capabilities which is vital in game development for ensuring smooth frame rates and responsive gameplay.
• Control: It gives developers fine-grained control over memory management and hardware interaction.
• Mature Ecosystem: There's a vast array of libraries and tools available for C++ that are useful in game development.

How is C++ used in Unreal Engine?

• Gameplay Framework: Unreal Engine provides a rich set of classes to build games. You can extend these to create custom gameplay elements like characters, AI, or interactive objects.
• Blueprints Interaction: Developers can expose C++ functions to Blueprints, Unreal's visual scripting system, allowing non-programmers to utilize complex code.

Example of a Simple C++ Class in Unreal Engine

#include "GameFramework/Actor.h"
#include "MyCustomActor.generated.h"

UCLASS()
class MYPROJECT_API AMyCustomActor : public AActor
{
    GENERATED_BODY()

public:    
    // Sets default values for this actor's properties
    AMyCustomActor();

protected:
    // Called when the game starts or when spawned
    virtual void BeginPlay() override;

public:    
    // Called every frame
    virtual void Tick(float DeltaTime) override;
};

#include "MyCustomActor.h"

AMyCustomActor::AMyCustomActor()
{
     // Set this actor to call Tick() every frame. 
     PrimaryActorTick.bCanEverTick = true;
}

void AMyCustomActor::BeginPlay()
{
    Super::BeginPlay();
    
    // Actor initialization or logic to run at spawn.
}

void AMyCustomActor::Tick(float DeltaTime)
{
    Super::Tick(DeltaTime);

    // Actor frame update logic goes here.
}

This example demonstrates a basic subclass of AActor which includes some essential functions like BeginPlay() and Tick().

In summary, C++ is the backbone of advanced development in Unreal Engine, offering power and flexibility for creating complex games and interactive experiences.