/// <param name="accessor"></param>
/// <param name="item">The item to transfer</param>
/// <param name="source">The source inventory</param>
/// <param name="destination">The destination inventory</param>
/// <param name="stacks">How many stacks to move. Use -1 to specify 'all' stacks</param>
/// <param name="destinationCapacity">The capacity of the destination inventory</param>
private static ItemTransactionResult ExecuteItemTransaction_Internal(ISimGameWorldReadWriteAccessor accessor, ref ItemTransationData data)
{
if (data.Stacks == 0)
{
return(new ItemTransactionResult(stackTransfered: 0));
}
if (data.Stacks < 0) // invert source and destination ?
{
var temp1 = data.SourceBuffer;
var temp2 = data.SourceCapacity;
data.SourceBuffer = data.DestinationBuffer;
data.SourceCapacity = data.DestinationCapacity;
data.DestinationBuffer = temp1;
data.DestinationCapacity = temp2;
data.Stacks = -data.Stacks;
}
if (!accessor.Exists(data.Item))
{
return(new ItemTransactionResult(ItemTransactionResultType.Failed_BadTransationRequest));
}
if (data.SourceBuffer != null && !data.SourceBuffer.Value.IsCreated)
{
return(new ItemTransactionResult(ItemTransactionResultType.Failed_SourceInvalid));
}
if (data.DestinationBuffer != null && !data.DestinationBuffer.Value.IsCreated)
{
return(new ItemTransactionResult(ItemTransactionResultType.Failed_DestinationInvalid));
}
if (!accessor.HasComponent <SimAssetId>(data.Item))
{
return(new ItemTransactionResult(ItemTransactionResultType.Failed_ItemHasNoSimAssetId));
}
var itemAssetId = accessor.GetComponent <SimAssetId>(data.Item);
var sourceIndex = -1;
var destinationIndex = -1;
var itemStackable = accessor.GetComponent <StackableFlag>(data.Item);
var sourceBuffer = data.SourceBuffer.GetValueOrDefault();
var destinationBuffer = data.DestinationBuffer.GetValueOrDefault();
if (sourceBuffer.IsCreated) // Find item in source
{
for (int i = 0; i < sourceBuffer.Length; i++)
{
if (accessor.TryGetComponent(sourceBuffer[i].ItemEntity, out SimAssetId assetId) && assetId == itemAssetId)
{
sourceIndex = i;
break;
}
}
}
if (destinationBuffer.IsCreated) // Find item in destination
{
for (int i = 0; i < destinationBuffer.Length; i++)
{
if (accessor.TryGetComponent(destinationBuffer[i].ItemEntity, out SimAssetId assetId) && assetId == itemAssetId)
{
destinationIndex = i;
break;
}
}
}
if (sourceBuffer.IsCreated && sourceIndex == -1)
{
return(new ItemTransactionResult(ItemTransactionResultType.Failed_ItemNotFoundInSource));
}
if (destinationBuffer.IsCreated && destinationIndex == -1 && destinationBuffer.Length >= data.DestinationCapacity)
{
return(new ItemTransactionResult(ItemTransactionResultType.Failed_DestinationFull));
}
// cap stacks
if (sourceIndex >= 0)
{
data.Stacks = min(data.Stacks, sourceBuffer[sourceIndex].Stacks);
if (data.Stacks == 0)
{
return(new ItemTransactionResult(ItemTransactionResultType.Failed_SourceStack0));
}
}
if (!itemStackable)
{
data.Stacks = 1;
}
// check unique item is not about to be added twice
if (!itemStackable && destinationIndex != -1 && destinationBuffer[destinationIndex].Stacks > 0)
{
return(new ItemTransactionResult(ItemTransactionResultType.Failed_UniqueItemAlreadyInDestination));
}
////////////////////////////////////////////////////////////////////////////////////////
// Perform Transaction
////////////////////////////////////////////////////////////////////////////////////////
// Remove from source
if (sourceIndex != -1)
{
// decrease stacks
var sourceEntry = sourceBuffer[sourceIndex];
sourceEntry.Stacks -= data.Stacks;
sourceBuffer[sourceIndex] = sourceEntry;
if (sourceEntry.Stacks <= 0) // remove from source if 0 left
{
// remove from source
sourceBuffer.RemoveAt(sourceIndex);
// Destroy item
accessor.DestroyEntity(sourceEntry.ItemEntity);
UpdateBuffersAfterStructuraleChange(ref data);
}
}
if (destinationBuffer.IsCreated)
{
// not found ? add new reference
if (destinationIndex == -1)
{
// Instantiate item copy
var itemCopy = accessor.Instantiate(data.Item);
UpdateBuffersAfterStructuraleChange(ref data);
accessor.SetComponent(itemCopy, new FirstInstigator()
{
Value = data.Destination.Value
});
destinationBuffer.Add(new InventoryItemReference()
{
ItemEntity = itemCopy, Stacks = 0
});
destinationIndex = destinationBuffer.Length - 1;
}
// increase stacks
var destinationEntry = destinationBuffer[destinationIndex];
destinationEntry.Stacks += data.Stacks;
destinationBuffer[destinationIndex] = destinationEntry;
}
return(new ItemTransactionResult(data.Stacks));
void UpdateBuffersAfterStructuraleChange(ref ItemTransationData data)
{
GetBuffer(accessor, data.Source, out data.SourceBuffer);
GetBuffer(accessor, data.Destination, out data.DestinationBuffer);
sourceBuffer = data.SourceBuffer.GetValueOrDefault();
destinationBuffer = data.DestinationBuffer.GetValueOrDefault();
}
}
