Riders on players stay in sync

This is Apoli 1.107.1 and Origins 1.46.13. Origins has no changes of its own this time, and is built against the new Apoli.

Sneaking off a player

A rider placed on a player with apoli:mount could get off with the sneak key, but the player being ridden never found out, and their screen kept drawing the rider on top of them after it had left. apoli:dismount didn't have the problem, which is why it looked like a bug with sneaking.

The cause is in vanilla. When a vehicle's passengers change, the server tells every player watching the vehicle, and a player never watches themselves. Vanilla never needed to, because nothing in vanilla rides a player. Apoli now tells the carried player as well, whatever ended the ride.

Mount offsets show for everyone

An offset such as "y": -0.3 was only drawn on the carried player's screen. The rider's own camera and everyone else saw the rider on the plain seat, because a second, redundant passenger update arrived after the offset and wiped it. Each passenger update is now followed by the offsets it belongs to, so the rider, the carried player and anyone watching agree.

/apoli:mount clear

/apoli:mount clear dropped the server's copy of an offset but left clients drawing it. It now clears it everywhere.