This article assume that you have already known Blueprint from end user perspective and also a bit of knowledge in CoreUObject, AssetRegistry, and UnrealEd modules. I will refer to this advance type of Blueprint customization simply as Blueprint customization. It is a part of my study that I want to share with you, in the hope that we can utilize Unreal Engine 4 to its full potentials in order to make a better game with it and especially to increase our productivity by making convenient and optimized tools that are related to Blueprint as part of our game production pipeline. This article is an overview of the answers to all of these questions. To do an advanced customization of Blueprint, we need to know what is a Blueprint, what is really happening inside of it, what are the data, how does it generates its output, etc. Blueprint is a great new feature in Unreal Engine 4, it is a visual scripting that enables everybody including non-programmers to easily creates and tweak Gameplay elements in the game, the tools to make and edit them in the editor are very rich and extendable.Īs a game programmer, apart from using Blueprint as a mean to prototype a feature, we may want to extend and customize it to meet the requirements of the game we are working on, extending the blueprint comes in many different flavors, adding a custom blueprint elements in C++ is very easy, we only need to create various C++ functions and properties that are accessible from Blueprint, but sometimes it is not quite enough for us, sometimes we need to create a custom nodes that our game designer can easily use, create an automated process related to blueprint such as collecting blueprint classes, create a utility to convert our custom game actors or data into Blueprints, and many more, this is especially true if you are a tool programmer and trying to optimize the pipeline of your game.
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