Using a game engine (Godot) as a simulator for GNSS location data plus a location/orientation solver

This video is about using a game engine (in this case Godot) as a simulator for a simple GNSS-based system, especially to provide kind of test environment for 3-antenna location/orientation solver. There’s also a simple autopilot for a simulated ferry. This system consists of two parts. Project made with Godot is used as a physics/location simulator and a program written with C++/Qt (called "controller" in the video) solves location and orientation of the ferry based on the 3 GNSS-antennas attached to the ferry. It also works as a really simple autopilot. Note that this system expect cartesian coordinate system. So if using latitude/longitude/elevation they need to be converted to some kind of X-Y-Z-style coordinate system. Originally I started to build this system to be used as a simulator for a real autopilot and GNSS-location/orientation solver. The project, however went to a state that it's unlikely that this will ever be used there. But I already did a lot of work with this and