Unreal Engine 4 Scripting with C++ Cookbook

Chapter 7. Communication between Classes and Interfaces

This chapter shows you how to write your own UInterfaces, and demonstrates how to take advantage of them within C++ to minimize class coupling and help keep your code clean. The following recipes will be covered in this chapter:

• Creating a UInterface
• Implementing a UInterface on an object
• Checking if a class implements a UInterface
• Casting to a UInterface implemented in native code
• Calling native UInterface functions from C++
• Inheriting UInterface from one another
• Overriding UInterface functions in C++
• Exposing UInterface methods to Blueprint from a native base class
• Implementing UInterface functions in Blueprint
• Creating C++ UInterface function implementations that can be overridden in Blueprint