private void CheckIfFreezeIsNeeded(Vessel from, Vessel to)
 {
     if (from.Landed && to.situation >= Vessel.Situations.SUB_ORBITAL)
     {
         TerrainExtender.ActivateNoCrashDamage();
         from.SetWorldVelocity(Vector3d.zero);
         VesselToFreeze.Add(from);
         VesselToFreeze.AddRange(FlightGlobals.VesselsLoaded.Where(x => x.LandedOrSplashed));
     }
 }
        private void FreezeLandedVesselWhenSwitching()
        {
            VesselToFreeze.RemoveAll(x => x == null);
            VesselToFreeze.RemoveAll(x => !x.loaded);

            if (VesselToFreeze.Count == 0)
            {
                TerrainExtender.DeactivateNoCrashDamage();
            }
            VesselToFreeze.ForEach(x => x?.SetWorldVelocity(Vector3d.zero));
        }