Introduction

In the previous chapter, we learned about general-purpose utilities that allow you to properly structure and organize the code and assets in your project by using Blueprint Function Libraries, Actor Components, and Interfaces.

In this chapter, we will dive into the topic of game UIs, which is something that's present in almost every video game. The game UI is one of the main ways to show information to the player, such as how many lives they have left, how many bullets are in their weapon, which weapon they are carrying, and so on, and to allow the player to interact with the game by choosing whether to continue the game, create a new game, choose which level they want to play in, and so on. This is shown to the player mostly in the form of images and text.

User Interfaces or UIs are usually added on top of the rendering of the game, which means that they are in front of everything else you see in the game and behave as layers (you can add them on top of one...