Why vehicle's wheels don't rotate visually when steer input changes slowly ? (with a driving wheel for example)

Development Programming & Scripting
1

Hi !

On UE5 I’m adding controls for a driving wheel on the vehicle template.

And I’ve found this problem:

  • My vehicle’s wheels don’t rotate visually when i change the steer input slowly with my driving wheel (which is the case for a normal driving).

I print the steer input and everything is ok, and I can drive normally, but the wheels don’t rotate right or left when the movement isn’t very fast.

Does anyone knows what is causing this issue?

Thanks a lot

2

Hi NaminUZ,

I took a look at this. (Set up a timeline to feed -1 to 1 values to ‘set steering input’ function on chaos vehicle movement component) And am also seeing some unexplainable weridness.

One thing I found is that is that if I set ‘Set Throttle Input’ to .01 the wheels will start turning.

Another observation: If I drag the vehicle high in the air, the wheels will turn slowly while falling. (A faulty friction calculation is to blame?)

There are some interesting ‘Steering Setup’ variables on the Vehicle movement component, but they don’t seem to do anything in this context.

I think it might take someone with some C++ knowledge to crack open this component and figure out what’s going on here…

Cheers!

1 Like
3

Thanks for your answer!
I also expect that someone will look deeper into this. It seems to be an engine bug.