public void Delete(MapItem item)
{
// delete item
if (Items.Contains(item))
{
Items.Remove(item);
}
// remove item from its nodes,
// and delete them if they're orphaned now
foreach (var node in item.GetItemNodes())
{
if (node.ForwardItem == item)
{
node.ForwardItem = null;
node.IsRed = false;
}
if (node.BackwardItem == item)
{
node.BackwardItem = null;
}
if (node.IsOrphaned())
{
Delete(node);
}
}
}
/// <summary>
/// Deletes an item. Nodes that are only used by this item
/// will also be deleted.
/// </summary>
/// <param name="item"></param>
public void Delete(MapItem item)
{
// delete item from all sectors
foreach (var sectorKvp in Sectors)
{
sectorKvp.Value.MapItems.Remove(item.Uid);
}
// remove item from its nodes,
// and delete them if they're orphaned now
foreach (var node in item.GetItemNodes())
{
if (node.ForwardItem == item)
{
node.ForwardItem = null;
node.IsRed = false;
}
if (node.BackwardItem == item)
{
node.BackwardItem = null;
}
if (node.IsOrphaned())
{
Delete(node);
}
}
// delete dependent items
if (item is Prefab pf)
{
foreach (var slaveItem in pf.SlaveItems)
{
if (slaveItem is MapItem mapItem)
{
Delete(mapItem);
}
// if Unresolved, just ignore it
}
}
}