public void CrossInventoryExchange(IItemStackSlot @from, IItemStackSlot to)
{
IInventory fromInventory = from.Inventory;
IInventory toInventory = to.Inventory;
ItemStack fromStack = fromInventory.RemoveStackAtSlot(from.InventoryIndex);
if (to.ItemStack.IsEmpty)
{
toInventory.AddStackAtSlot(fromStack, to.InventoryIndex);
}
else
{
ItemStack toStack = toInventory.RemoveStackAtSlot(to.InventoryIndex);
fromInventory.AddItemStacks(new[] { toInventory.AddStackAtSlot(fromStack, to.InventoryIndex) });
toInventory.AddItemStacks(new[] { fromInventory.AddStackAtSlot(toStack, from.InventoryIndex) });
}
}