# feel/roll-mismatch

> Talos 0.6 · Since 0.6

a ball moving along the ground spun against its travel: backwards (backspin at the rolling rate reads as sliding), about the wrong axis, or under 30% of the rolling rate, in over half the stretches judged

| | |
|---|---|
| Severity | `warning` |
| Source | `feel` |
| Offers a fix patch | no |

## What to do

spin it about ground normal × velocity by distance ÷ radius each tick: rollFromMotion(displacement, radius), or the path behavior's roll option, or a dynamic sphere that rolls by itself; the finding gives the spin seen and the rolling one

## Since / changed

See the version chips above and what changed.