// IsVehicleSeatAccessible
BOOL _IS_VEHICLE_SEAT_ACCESSIBLE(Ped ped, Vehicle vehicle, int seatIndex, BOOL side, BOOL onEnter);
Check if a vehicle seat is accessible. If you park your vehicle near a wall and the ped cannot enter/exit this side, the return value toggles from true (not blocked) to false (blocked).
side = only relevant for bikes/motorcycles to check if the left (false)/right (true) side is blocked.
onEnter = check if you can enter (true) or exit (false) a vehicle.