Hi, I am relatively new to UE4, and am wondering what the best way would be to procedurally place down planets when a new save is created. I’ve experimented a good deal with just a simple spawn actor then randomizing a transform input, but haven’t been able to get it to work properly.
Just take a random unit vector at 0,0,0 and multiply it by a random float. Do this for each planet.
You will also have to check they don’t overlap…
You would be spawning blueprints ( probably ), but here’s the vector concept:
I’m also thinking you’ll want to spawn in a circular orbit. The BP below can help with that:
On top of that, you’ll want to use random streams. They allow you to make your universe consistent, yet random. The random stream’s results are based on a number called the “seed”, which will decide all of the random choices. Two universes with the same seed will be similar, but a different seed will result in an entirely different universe. Make sure you always use the same random stream, and pass it by ref, though.
Combine with SaxonRah’s Solar System Blueprint Download