private bool TryAddInternal(IEntityContainer holder, Entity item, int index, bool replace)
{
if (item == null || holder == null || holder.Contains(item))
{
return(false);
}
var inventoryItem = item.Get <InventoryItem>();
if (inventoryItem == null)
{
return(false);
}
if (holder[index] != null)
{
if (!replace)
{
return(false);
}
holder.Remove(holder[index]);
}
if (inventoryItem.Inventory != null)
{
inventoryItem.Inventory.Remove(item);
}
holder.ContainerSystemSet(item, index);
ProcessHolderChange(holder, item, inventoryItem, index);
return(true);
}
public bool TrySwap(IEntityContainer holder, int index1, int index2)
{
var item1 = holder[index1];
var item2 = holder[index2];
if (item1 == null && item2 == null)
{
return(false);
}
if (item1 != null)
{
item1.Get <InventoryItem>().Index = index2;
holder.ContainerSystemSet(item1, index2);
}
if (item2 != null)
{
item2.Get <InventoryItem>().Index = index1;
holder.ContainerSystemSet(item2, index1);
}
holder.Owner.Post(new ContainerChanged(holder));
return(true);
}