/// <summary>
/// Update an existing army movement order with a new list of units
/// </summary>
/// <param name="order">The army movement order</param>
/// <param name="newUnits">The list of units to include into the army movement order</param>
/// <param name="totalQty">The total number of combatants among the new units</param>
/// totalQty is added to save time calculating it - the caller can just pass it in
public void UpdateArmyMovementOrderUnits(ArmyMovementOrder order, List <Unit> newUnits, int totalQty)
{
// return units back to the province they were leaving
order.GetOrigin().AddUnits(order.GetUnits());
if (totalQty > 0)
{
// remove new units from the provine and add them to the move order
order.GetOrigin().RemoveUnits(newUnits);
order.SetUnits(newUnits);
}
else
{
// no units involved - just nix the order
_movementOrders.GetAllOrders().Remove(order);
}
}
/// <summary>
/// Add an army movement order to the current collection of orders
/// </summary>
/// <param name="order">The new army movement order</param>
/// <returns>Whether the order was added successfully</returns>
public bool AddArmyMovementOrder(ArmyMovementOrder order)
{
// clone order's units as removing them from their location
// may result in the order's unit list to become empty
List <Unit> orderUnits = order.GetUnits();
List <Unit> movingUnits = new List <Unit>();
for (int i = 0; i < orderUnits.Count; i++)
{
movingUnits.Add(new Unit(orderUnits[i]));
}
order.GetOrigin().RemoveUnits(order.GetUnits());
order.SetUnits(movingUnits);
return(_movementOrders.AddArmyMovementOrder(order));
}