Terrain generation took way longer than i had expected, but now at least i have an acceptable terrain and a new probe model.
I think tomorrow is all about weapons and enemies to begin with, then i will dig deeper into the upgrade system.

I have to say that i have leaned a lot this first day about what should have been in my toolkit from the beginning, like terrain generation, collision response, the ability to load a texture so that it can be accessed by the CPU and so on.