/// <summary>
/// Deletes a <see cref="DataReader" /> that belongs to the <see cref="Subscriber" />.
/// </summary>
/// <remarks>
/// <para>If the <see cref="DataReader" /> does not belong to the <see cref="Subscriber" />, the operation returns the error <see cref="ReturnCode.PreconditionNotMet" />.</para>
/// <para>The deletion of a <see cref="DataReader" /> is not allowed if there are any existing <see cref="ReadCondition" /> or <see cref="QueryCondition" /> objects that are
/// attached to the <see cref="DataReader" />. If the DeleteDataReader operation is called on a <see cref="DataReader" /> with any of these existing objects
/// attached to it, it will return <see cref="ReturnCode.PreconditionNotMet" />.</para>
/// <para>The DeleteDataReader operation must be called on the same <see cref="Subscriber" /> object used to create the <see cref="DataReader" />. If
/// DeleteDataReader is called on a different <see cref="Subscriber" />, the operation will have no effect and it will return
/// <see cref="ReturnCode.PreconditionNotMet" />.</para>
/// </remarks>
/// <param name="dataReader">The <see cref="DataReader" /> to be deleted.</param>
/// <returns>The <see cref="ReturnCode" /> that indicates the operation result.</returns>
public ReturnCode DeleteDataReader(DataReader dataReader)
{
if (dataReader == null)
{
return(ReturnCode.Ok);
}
ReturnCode ret = UnsafeNativeMethods.DeleteDataReader(_native, dataReader.ToNative());
if (ret == ReturnCode.Ok)
{
EntityManager.Instance.Remove((dataReader as Entity).ToNative());
ContainedEntities.Remove(dataReader);
}
return(ret);
}
public override void HandleComponentState(dynamic state)
{
var theState = state as InventoryComponentState;
var stateChanged = false;
if (MaxSlots != theState.MaxSlots)
{
MaxSlots = theState.MaxSlots;
stateChanged = true;
}
var newEntities = new List <int>(theState.ContainedEntities);
var toRemove = new List <IEntity>();
foreach (var e in ContainedEntities)
{
if (newEntities.Contains(e.Uid))
{
newEntities.Remove(e.Uid);
}
else
{
toRemove.Add(e);
}
}
stateChanged = stateChanged || toRemove.Any() || newEntities.Any();
foreach (var e in toRemove)
{
ContainedEntities.Remove(e);
}
foreach (var uid in newEntities)
{
ContainedEntities.Add(Owner.EntityManager.GetEntity(uid));
}
if (stateChanged && Changed != null)
{
Changed(this, MaxSlots, ContainedEntities);
}
}
