Godot Engine: What is this game engine and how does it work?

Contents:

• What is Godot Engine
• How to install Godot Engine
• The node and scene system in Godot Engine - how it all works
• Programming languages ​​in Godot Engine
• Working with 2D and 3D in Godot Engine
• Advantages and disadvantages of Godot Engine
• Results

If you're interested in game development but find mastering a game engine challenging, you might want to consider the Godot Engine. This open-source platform is becoming increasingly popular among indie developers thanks to its simplicity and functionality. In this article, we'll take a detailed look at the key features of the Godot Engine, as well as its advantages and disadvantages, to help you determine if it's right for your projects.

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• What is Godot Engine
• How to install Godot Engine
• The node and scene system in Godot Engine - how it works
• Programming languages ​​in Godot Engine
• Working with 2D and 3D in Godot Engine
• Advantages and disadvantages of Godot Engine

What is Godot Engine

Godot Engine is a free and powerful engine for developing 2D and 3D games, which was created in 2007 by Argentine programmers Juan Liñetzky and Ariel Mansur. Initially, the engine was used to create software called Larvotor. Over the course of its development, Godot has gone through many iterations and name changes, including Legacy, NG3D, and Larvita. In 2014, Godot was released into the open source community and has since continued to be actively developed thanks to the support of the community and the non-profit Godot Foundation. The Godot Engine stands out for its flexibility and ease of use, making it an ideal choice for both novice developers and seasoned professionals.

Today, Godot is one of the most popular game engines, along with Unity, Unreal Engine, and Construct. It is suitable for both learning and developing commercial projects in 2D and 3D. Godot supports various operating systems, including Windows, macOS, Linux, BSD, and Android. In addition, it is possible to launch the editor and work in it directly from the browser. Project export is available for all of the listed platforms, including iOS, making Godot a universal tool for game developers.

How to install Godot Engine

Godot Engine is unique because it runs autonomously and does not require full installation on the operating system. To get started, simply select the desired version on the official website, download the ZIP archive, unzip it, and open the executable file with the stable_win64 prefix. Godot Engine is also available for installation through the Steam platform, simplifying access to tools for game developers.

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The second application, prefixed with -stable_win64_console, is a version that, in addition to the main editor, opens an additional window for console output. This functionality is typically of interest to experienced users who use it for debugging scripts. Having a console window allows for more efficient error tracking and code analysis, significantly simplifying the development process.

The Node and Scene System in Godot Engine – How It Works

When launching the Godot Engine editor, a menu opens with options for creating a new project, loading an existing one, or accessing the asset library. An internet connection is required to use the asset library. Selecting this option opens a window with numerous shortcuts for loading plugins, templates, and various demo scenes. This significantly simplifies the development process and allows you to quickly find the necessary resources for your project. Godot Engine provides a user-friendly interface that promotes efficient work for both novice developers and experienced users.

The Godot game engine architecture is based on the concepts of nodes and scenes, which provides flexibility and modularity in game development. Nodes represent key elements responsible for various aspects of a game, such as images, sounds, animations, timers, and text elements. For example, the image below shows a Crows node, which serves as the parent node for multiple child nodes. In this context, the child nodes represent animated crow sprites placed on the game map. Using nodes in Godot allows developers to easily manage and organize game elements, creating a more structured and streamlined development process.

The expanded list allows you to select any child node, which will be highlighted in the viewing area for further actions. This allows you to effectively manage elements and optimize your workflow.

In Godot, the key role Godot is a game that uses a hierarchy of nodes, with each node responsible for a specific task. The user must combine nodes to gradually build the structure of their game. Effective use of nodes streamlines the development process and provides flexibility in managing game elements. Understanding the node hierarchy is an essential step to creating a high-quality game project in Godot. Scenes in Godot are organizational structures where all elements are grouped under a single root node. Once saved, a scene functions as a new type of node that can become a child element or the main block of another scene. This allows for the creation of flexible object hierarchies and simplifies the management of complex projects. Using scenes in Godot helps you efficiently build and organize game content, which is a key aspect of game development.

The Godot client can be thought of as a scene editor, which plays a key role in game creation. Depending on the level design, a project may have many scenes, but every game always has a main scene that loads at startup. This main scene serves as the starting point for all gameplay and elements.

Programming Languages ​​in the Godot Engine

Programming in Godot allows you to extend the functionality of nodes and expand the capabilities of your game. The engine officially supports four programming languages: GDScript, C#, as well as C and C++. C and C++ are integrated via GDExtension, starting with version 4.0. Additionally, thanks to an active community, external extensions are available for languages ​​such as Rust, Nim, Python, and JavaScript. This diversity of programming languages ​​provides developers with flexibility and the ability to choose the most appropriate tool to implement their ideas.

The integration of multiple programming languages ​​provides flexibility in the project architecture and allows it to be adapted to various tasks. For example, in one game, the main part of the code may be written in GDScript, while C# can be used to implement complex algorithms. However, it is also possible to limit the use of only one language, which can simplify development and reduce the learning curve. This approach allows developers to choose the most appropriate tools for specific tasks, improving the efficiency and quality of the final product.

The creators of the Godot game engine recommend that beginners first learn GDScript programming, as this language is specifically designed for working with this engine. GDScript's syntax is simple compared to other languages, which allows for smaller file sizes and faster compilation and project loading. In addition, GDScript has some similarities with languages ​​such as Python, Lua, and Squirrel, as the developers drew inspiration from them. By mastering GDScript, users will be able to quickly dive into Godot game development and effectively utilize all the engine's capabilities.

For more detailed information on GDScript programming, we recommend consulting the official reference. This resource contains comprehensive information, code samples, and recommendations to help you better understand the language's capabilities and its application in game development on the Godot platform. Studying the reference will help you master key GDScript concepts and improve your programming skills.

Working with 2D and 3D in the Godot Engine

The Godot Engine is an excellent choice for developing both 2D and 3D games. The editor provides specialized tools, functions, and rendering technologies adapted to each type of graphics. This allows developers to efficiently create and optimize games, regardless of the chosen format, ensuring high visual quality and performance.

Godot's 2D graphics engine features a custom rendering and physics engine that offers a wide range of features. It enables efficient creation and processing of 2D graphics, supporting features such as sprites, animation, lighting, and shadows. Tools for managing object physics are also available, enabling realistic interactions between game elements. Using Godot's built-in capabilities, developers can create vibrant and dynamic 2D games with high performance.

• Tilemaps – in the context of Godot, this refers to a grid of tiles used to create a game level. With the TileMapLayer node, you can distribute small image fragments like a brush, instead of moving each element manually;
• particles;
• dynamic 2D scene lighting;
• physics and collisions;
• an advanced layer and modifier system — CanvasItem;
• an animation system, including animation based on 2D skeletons and cutout animation.

For convenient development of 2D scenes, levels, and UI elements, the editor features a special 2D mode. It offers a fixed viewing angle and an X, Y coordinate system, which greatly simplifies the process of creating and customizing visual components. This mode allows developers to focus on details and precision of object placement, ensuring efficient work on projects.

Development of 3D games in Godot Engine has undergone significant changes with the release of version 4.0. The engine currently offers support for three rendering types, expanding developer options and enabling the creation of higher-quality, more visually appealing games. These improvements contribute to increased performance and graphics optimization, an important aspect in modern game development.

• Forward+ — for desktop platforms. It uses the Vulkan, Direct3D 12, and Metal (for Apple systems) graphics APIs.
• Mobile — despite its name, it is suitable not only for mobile projects but also for desktop ones, if the future game does not require graphic refinements. Uses the same APIs as Forward+.
• Compatibility (GL Compatibility) — designed for desktop and mobile platforms with weak configurations and uses the OpenGL API.

For working with 3D graphics, a special mode with a 3D viewport is provided, which allows manipulating assets in space along three axes: X, Y and Z. This mode not only supports rendering, but also offers a wide range of relevant functions necessary for creating and editing 3D objects. Using a 3D viewport significantly simplifies the process of modeling, texturing and animation, providing full immersion in 3D space and precise control over each element.

Here are some examples:

• PBR materials, that is, materials taking into account the physical properties of the surface;
• various types of shading;
• in addition to the approach using Metallic and Roughness textures, ORM texturing is available. This refers to a method where Ambient Occlusion, Metallic and Roughness textures are combined into one map. Each property has a separate color channel assigned to it - red, blue or green;
• real-time lighting;
• post-processing and special effects (volumetric fog, particles, animated sky shaders, etc.);
• basic tools for creating primitives, including procedural geometry;
• 3D physics: rigid bodies, collisions, vehicle physics (arcade), ragdoll system;
• import of models in the .glTF(2.0), .fbx (since version 4.3, import via the Ufbx Importer tool is built in by default), .dae, .obj (for static objects) extensions;
• in-game cameras with perspective and orthographic display and with clipped space;
• VR support and AR.

To learn more about features for 3D projects, visit the official documentation. Here you will find comprehensive information about all the features that will help you get the most out of your 3D graphics tools.

Advantages and Disadvantages of the Godot Engine

Understanding all the features of Godot is key for developers to determine whether this game engine meets their requirements and expectations when creating a game. Knowing Godot's functionality and capabilities allows you to effectively use its tools and resources, which in turn contributes to the successful development and implementation of game projects.

A simple and independent client with Russian language support does not require installation on the operating system and ensures fast loading of both the application itself and projects. This client has relatively low system requirements, making it accessible to a wide audience of users. You can easily use it on most modern devices, which greatly simplifies the workflow.

Godot offers transparent terms of use thanks to the MIT license. This means you can use the engine absolutely free of charge, receiving full access to its source code. Users can modify Godot to suit their needs and develop commercial projects based on it, which opens up wide horizons for developers.

The absence of additional payments for services and license fees makes Godot an attractive choice for developers. This policy is unlikely to change in the near future, which is a significant advantage compared to commercial game engines. Users can voluntarily support the Godot Foundation, which will help further develop the platform and improve its capabilities.

Cross-platform. Since version 4.0, project export is now available for Windows, macOS, Linux, Android, iOS, HTML5, and WebGL. Users can run their projects and make changes from various devices, significantly simplifying the testing and development process. This provides flexibility and ease of use, allowing developers to effectively test their applications on different platforms.

The node-based architecture is an efficient way to organize content. A tree-based hierarchy provides structure to blocks, enabling a modular approach to creating complex scenes. This method promotes design flexibility and scalability, simplifying the process of editing and updating content. Using a node-based architecture in design allows developers and designers to manage resources more efficiently and ensure a high-quality user experience.

The editor provides convenient interaction with both 2D and 3D graphics. The engine offers a wide range of features suitable for creating various types of games—from pixel platformers to realistic simulators and puzzles. This tool is ideal for both novice developers and experienced professionals seeking to realize their ideas in unique game projects.

Support for extensions and modifications is an important part of the engine's functionality. Using the official GDExtention module, users can create classes and scripts for integration with the engine. This allows developers to significantly expand the platform's capabilities. Furthermore, users can develop their own extensions without having to recompile the engine core, simplifying the modification and customization process. This approach makes the platform more flexible and adaptable to specific tasks, facilitating the creation of unique projects.

The 3D graphics capabilities of Godot are inferior to those of other game engines. 3D tools have improved significantly since version 4.0, but remain limited compared to engines such as Unity and Unreal Engine. Thus, Godot is ideal for developing games with simplified 3D graphics. If your project requires a AAA-level photorealistic visual style, it's worth considering other game engines that can better handle such tasks.

The selection of assets and plugins in Godot's library is limited compared to the Unity Asset Store and Fab platform. This is because all contributions are created by the community out of passion, while most content and tool developers are focused on commercial success. As a result, Godot users may find themselves with a smaller number of available resources for game development.

Importing models and animations may cause some difficulties. Although the built-in FBX importer demonstrates greater stability than the previous version, FBX2glTF, errors may still occur when loading complex animations. It is important to note that this process is essentially a conversion, and the primary format for working with it remains .glTF (2.0). Therefore, to achieve the best results, it is recommended to thoroughly review and optimize models and animations before importing.

Porting games to consoles requires the use of third-party solutions. Dev kit information is not disclosed, which is contrary to the principles of the MIT open source license. Therefore, porting a game developed on the Godot platform requires collaboration with the publisher or a specialized company offering porting services. In this case, dev kit information remains with third parties, which may limit access to necessary resources and information for developers.

Godot is primarily aimed at individual developers and small studios. It lacks priority support, collaboration tools, analytics services, and integration with popular solutions such as sound engines. Additionally, as noted, Godot doesn't offer direct support for porting to consoles, which is an important aspect for AA and AAA projects.

Bottom Line

Godot is a powerful, free, open-source game engine that offers transparent terms of use. Its simple architecture and support for both 2D and 3D graphics make it an ideal choice for indie developers and small teams. Godot is also a great fit for educational institutions, including teachers and students, thanks to its accessibility and extensive documentation. This engine allows for the creation of games of various genres and complexity, making it a versatile tool for developers.

If you're looking to quickly dive into the development process and create a full-fledged game without licensing costs, Godot is an excellent choice. Despite some limitations, this engine effectively accomplishes its intended tasks, as evidenced by numerous showreels of games created with it. Godot provides developers with all the necessary tools to realize their creative ideas, which makes it popular among indie developers and newcomers to the gaming industry.

Learn more:

Unreal Engine is a powerful game engine developed by Epic Games, which has a significant impact on the video game industry. Since its initial release in 1998, the Unreal Engine has undergone numerous changes and improvements, becoming one of the most popular tools for creating games, architectural visualization, and interactive content. Unreal Engine's key advantages include high-quality graphics that support advanced rendering technologies such as ray tracing and photogrammetry. The engine provides developers with a wide range of tools for creating realistic physics, animation, and artificial intelligence, enabling immersive user experiences. Key features of the Unreal Engine include the visual Blueprints editor, which simplifies the development process by allowing the use of graphical programming instead of writing code. This makes the engine accessible to both novice and experienced developers. Also worth noting is the support of virtual and augmented reality, which opens up new horizons for creating games and applications.

Finally, an active community and extensive documentation make Unreal Engine an ideal choice for developers of all levels striving to create high-quality and innovative projects.