The main goal of the tutorial is to create a simple quest locator using C++ (similar to the one available on the RIG’s suit from the game Dead Space) which projects a colored floor guide on the environment that guides the user to objectives. To achieve these results, we are going to work with Unreal’s navigation system (for pathfinding) and Niagara System (for the trail effect) in C++.
https://dev.epicgames.com/community/learning/tutorials/vj59/unreal-engine-quest-locator-in-unreal-5-using-c