public bool AddItem(BaseSnapshotItem obj, int id)
{
if (obj == null)
{
Debug.Warning("snapshots", "add null object");
return(false);
}
if (SnapshotItems.Count + 1 >= MaxItems)
{
Debug.Warning("snapshots", "too many items");
return(false);
}
var itemSize = SnapshotItemsInfo.GetSize(obj.GetType());
if (SnapshotSize + itemSize >= Snapshot.MaxSize)
{
Debug.Warning("snapshots", "too much data");
return(false);
}
var item = new SnapshotItem(id, obj);
SnapshotSize += itemSize;
SnapshotItems.Add(item);
return(true);
}
// TODO
//private static void UndiffItem(BaseSnapshotItem past, int[] inputData,
// int inputOffset, BaseSnapshotItem newItem)
//{
// var pastData = past.ToArray();
// var newData = new int[pastData.Length];
// for (int i = 0; i < pastData.Length; i++)
// {
// newData[i] = pastData[i] + inputData[inputOffset + i];
// }
// newItem.Deserialize(newData, 0);
//}
private static int DiffItem(BaseSnapshotItem past, BaseSnapshotItem current,
int[] outputData, int outputOffset)
{
var needed = 0;
var pastData = past.ToArray();
var currentdata = current.ToArray();
for (int i = 0; i < pastData.Length; i++)
{
var @out = currentdata[i] - pastData[i];
needed |= @out;
outputData[outputOffset++] = @out;
}
return(needed);
}
