/// <summary>
/// 更新直前の艦船データをコピーして退避します。
/// </summary>
public void EvacuatePreviousShips()
{
if (Fleets.Values.Any(f => f != null && f.IsInSortie))
{
return;
}
PreviousShips = new IDDictionary <ShipData>(KCDatabase.Instance.Ships.Values);
IsAnchorageRepaired = Fleets.ToDictionary(f => f.Key, f => f.Value.CanAnchorageRepair);
PreviousDockingID = new HashSet <int>(KCDatabase.Instance.Docks.Values.Select(d => d.ShipID));
}