Races not working correctly in 2021.02/.04

[ohlidalp]

From Discord/game-support:

Xploder98
—
Today at 5:56 PM
Hello everybody. I think I might have finally figured out why races on some terrains haven't been working in the latest two releases!
Most of the starting checkpoints for the terrains with non-working races have event checkpoint listed in their ODEFs. The terrains with working races have checkpoints that explicitly list event racestart truck or just event racestart in their ODEFs.
Maybe previous RoR versions implicitly converted event checkpoint to event racestart for the first listed checkpoint in a race?

Possibly related to #2703 - I rewrote ODEF parser and broke stuff.

Races which don't work:

• https://forum.rigsofrods.org/resources/ladoga.160/
• https://forum.rigsofrods.org/resources/hillside.541/
• https://forum.rigsofrods.org/resources/desert-rally-map.646/