What code language does Unreal Engine use?

Unreal Engine: The Powerhouse Code Language of Epic Games

What is Unreal Engine?

Unreal Engine is a cutting-edge game engine developed by Epic Games, the creators of the critically acclaimed video game series, Gears of War and Fortnite. Launched in 1998, Unreal Engine has become the industry standard for game development, used by numerous studios worldwide. In this article, we will delve into the code language used by Unreal Engine, exploring its features, benefits, and the software development life cycle.

Unreal Engine’s Code Language: C++

At the heart of Unreal Engine lies its C++ code language, a powerful and efficient language used for developing high-performance games. C++ is the foundation of Unreal Engine’s architecture, providing a robust and flexible platform for building complex games and applications. Epic Games’ team, led by Shawn Elliott, the Chief Technical Officer of Unreal Engine, developed the language as a custom variant of C++, Neko.

Key Features of C++ in Unreal Engine

• Custom Variables: Unreal Engine stores its data in custom variables, which are used to encapsulate complex game logic and graphics settings. These variables can be dynamically assigned and modified throughout the game’s execution.
• Object-Oriented Programming: Unreal Engine supports object-oriented programming (OOP) concepts, allowing developers to create complex game objects, scripts, and systems.
• Scripting: Unreal Engine provides a scripting system, allowing developers to extend its functionality with Scripted Blueprints. These blueprints are essentially visual programming languages that enable rapid prototyping and development.
• Mathematical Expressions: Unreal Engine supports mathematical expressions using F# or F# C#, providing developers with a way to perform calculations and manipulate game data in a more efficient manner.

Unreal Engine’s Scripting System: Blueprints

Blueprints

Blueprints are a visual scripting language used in Unreal Engine to create game logic, systems, and behaviors. They are composed of nodes, which represent different components, such as actors, systems, and events. Blueprints are not limited to scripting; they can also be used for debugging and testing.

Scripted Blueprints: Types and Variables

• Blueprint Variables: Blueprints use a custom variable system, similar to C++, to store data.
• Event Handlers: Blueprints have event handlers, which are functions that respond to specific events, such as interactions or mouse clicks.

Benefits of Using C++ in Unreal Engine

• Performance: Unreal Engine‘s use of C++ allows for optimized performance, as the engine is designed to take advantage of caching and compiler optimization.
• Scalability: C++ provides a high degree of flexibility and modularity, making it easier to scale game engines to meet the demands of larger projects.
• Flexibility: C++‘s custom nature allows developers to create complex systems and scripts with ease.

The Unveiled Code

Here is an example of a simple Unreal Engine code snippet:

// A Simple Actor with a custom script

#include "CoreMinimal.h"

#include "GameFramework/Actor.h"

#include "ScriptLib.h"



class AMyActor : public AActor

{

    GENERATED_BODY()



public:

    AMyActor();



    // Called when the game starts or when spawned

    virtual void BeginPlay() override;



    // Called every frame

    virtual void Tick(float DeltaTime) override;



    // Custom function to handle events

    void OnInteract();

};



// Custom script for the actor

void AMyActor::BeginPlay()

{

    Super::BeginPlay();

    // Initialize custom variables

    _myVariable = 0;

}



void AMyActor::Tick(float DeltaTime)

{

    Super::Tick(DeltaTime);

    // Update custom variables

    _myVariable++;

}



void AMyActor::OnInteract()

{

    // Handle interactor event

    UBaseComponent* Component = Cast<UBaseComponent>(GetComponentOrNull());

    if (Component)

    {

        Component->OnComponentEvent(EF_M_USER_START);

    }

}

Table: Major Unreal Engine Features

Feature	Description
Custom Variables	Stores data in custom variables for encapsulated game logic and graphics settings
Object-Oriented Programming	Supports OOP concepts for creating complex game objects, scripts, and systems
Scripting	Provides a scripting system for extending engine functionality with Scripted Blueprints
Math Expressions	Supports mathematical expressions using F# or F# C# for efficient calculations and manipulation of game data
Blueprints	A visual scripting language for creating game logic, systems, and behaviors
Event Handlers	Allows for event-driven programming with custom functions
Scripted Blueprints	Supports debugging and testing for extending engine functionality
Built-in Support for C# and F#	Provides compatibility with popular programming languages

Conclusion

Unreal Engine’s C++ code language is a powerful and efficient foundation for building high-performance games and applications. C++‘s custom nature and support for object-oriented programming, script-based development, and mathematical expressions make it an ideal choice for game development. Unreal Engine‘s use of C++ allows for optimized performance, scalability, and flexibility, making it an attractive choice for developers and publishers alike.