Rewinding time using backspace causes "Wrong Checkpoint" message to appear

[AsciiWolf]

Stunt Rally from Git (5ce6dde + stuntrally/tracks@bef80ff) + latest OGRE (13.4.4). Rewinding time using backspace causes "Wrong Checkpoint" message to appear for all the previous checkpoints. See this video:

wrong_checkpoints.webm

[Calinou]

I can confirm this on 5ce6dde. Note that this isn't a new issue – even 2.3 already had this issue.

I guess the easiest way to fix this is to discard the "wrong checkpoint" notification and sound if a checkpoint is passed while rewinding. This could also nerf some exploits related to finishing laps this way (when the penultimate checkpoint is far away from the last checkpoint).

[cryham]

Nice video 👍
Yeah I know of this since not long after I added rewind. Wasn't anything important for me since it's just a missed warning. We probably still can have some, even when driving normally in some track places.

Worse is this freaking issue that doesn't make the lap finish in some rare cases. I had it recently on AlienBase.
Good opportunity for somebody's PR 😉 with fix