Physics in Unreal Engine is responsible for the simulation and collision of all physical actors, which means any motion, like falling or applying a force or interaction between them is done using physics. At the time of this book was written, Unreal used PhysX version 3.4, which was used for all simulations.
UE4 includes a built-in high-performance custom physics engine called Chaos Physics Engine, which (at the time of writing this book) is only available through the GitHub source. Chaos Physics is expected to be production-ready in UE4 version 4.26.
Raycasting (also known ...
