Displaying feedback to the player is one of the most important elements within game design, and this will usually involve some sort of HUD, or at least menus, within your game.
In previous versions of Unreal, there was simple HUD support, which allowed you to draw simple shapes and text to the screen. However, it was somewhat limited in terms of aesthetics, and so solutions such as Scaleform became common to work around these limitations. Scaleform leveraged Adobe's Flash file format to store vector images and UI scripts. It was not without its own cons for developers, though, not least the cost – it was a third-party product requiring a (sometimes, expensive) license.
As a result, Epic developed Slate for the Unreal 4 editor and the in-game UI framework. Slate is a collection of widgets (UI elements) and a framework that allows for a cross-platform interface...
