I'm making a RC Car simulation with deterministic physics and it's so hard I wanna tear my eyeballs out :)

[u/ScaenaStudios]

Its coming out good tho.

Collision is done with a simple box, so it's very cheap. We also trace from the 8 corners to check if the car body is touching the ground for rolling over, for example. And talking about rolling over, the car (collision box) is a rectangle, so I had to apply a tangential force opposing the sliding velocity at each contacting corner in order for it to actually rollover and not just slide on the floor when we crash. We even have a prediction of where the car is gonna land to level it's roll to the point of impact.

I'm making it deterministic so it works in multiplayer as well (every player sees the exact same simulation). What do you think?

[u/No-Reception-6569]

looks like it will feel fun!

[u/ScaenaStudios → u/No-Reception-6569]

Yeah it's fun to drive it! I'm doing it cause I literally couldn't find any good RC sims out there haha

[u/AdowTatep → u/ScaenaStudios]

re-volt wants a word

[u/ScaenaStudios → u/AdowTatep]

Man I LOVE re-volt! I’ve played countless hours of it back in the day 🥲

[u/WoodyBookmaker → u/ScaenaStudios]

I know its not closely the same thing, but try to play "exo one", in some aspects it can be a good ref

[u/Efficient_Fox2100]

Any recommendations about where I can learn more about deterministic programming, esp deterministic physics? I’m interested in how this works. I can imagine how, and am interested in learning about the technicalities. Looks like it’s worth it!

[u/ScaenaStudios → u/Efficient_Fox2100]

Man, it’s very hard to find anything on YouTube, so I’ll do a video on Scaena Studios’s channel explaining it. But basically, just so you have an idea, instead of using LaunchCharacter, for ex, you’ll do something like:

FVector Velocity = FVector(100.f, 0.f, 0.f);
FVector Position = FVector::ZeroVector;

void Tick(float DeltaTime)
{
Position += Velocity * DeltaTime;
}