/// <summary>
/// Handles operation <see cref = "GetProperties" />: Sends event <see cref = "ItemProperties" /> to the client.
/// </summary>
/// <param name = "peer">
/// The client peer.
/// </param>
/// <param name = "request">
/// The request.
/// </param>
/// <param name = "sendParameters">
/// The send Parameters.
/// </param>
/// <returns>
/// Null or an <see cref = "OperationResponse" /> with error code <see cref = "ReturnCode.ItemNotFound" />.
/// </returns>
public OperationResponse OperationGetProperties(PeerBase peer, OperationRequest request, SendParameters sendParameters)
{
var operation = new GetProperties(peer.Protocol, request);
if (!operation.IsValid)
{
return new OperationResponse(request.OperationCode) { ReturnCode = (int)ReturnCode.InvalidOperationParameter, DebugMessage = operation.GetErrorMessage() };
}
operation.OnStart();
IWorld world = this.World;
Item item;
bool actorItem = this.TryGetItem(operation.ItemType, operation.ItemId, out item);
if (actorItem == false)
{
if (world.ItemCache.TryGetItem(operation.ItemType, operation.ItemId, out item) == false)
{
return operation.GetOperationResponse((int)ReturnCode.ItemNotFound, "ItemNotFound");
}
}
if (actorItem)
{
// we are already in the item thread, invoke directly
return this.ItemOperationGetProperties(item, operation);
}
// second parameter (peer) allows us to send an error event to the client (in case of an error)
item.Fiber.Enqueue(() => this.ExecItemOperation(() => this.ItemOperationGetProperties(item, operation), sendParameters));
// operation is continued later
return null;
}
/// <summary>
/// The operation get properties.
/// </summary>
/// <param name = "item">
/// The mmo item.
/// </param>
/// <param name = "operation">
/// The operation.
/// </param>
/// <returns>
/// Ok or ItemNotFound
/// </returns>
private OperationResponse ItemOperationGetProperties(Item item, GetProperties operation)
{
if (item.Disposed)
{
return operation.GetOperationResponse((int)ReturnCode.ItemNotFound, "ItemNotFound");
}
if (item.Properties != null)
{
if (operation.PropertiesRevision.HasValue == false || operation.PropertiesRevision.Value != item.PropertiesRevision)
{
var properties = new ItemProperties
{
ItemId = item.Id, ItemType = item.Type, PropertiesRevision = item.PropertiesRevision, PropertiesSet = new Hashtable(item.Properties)
};
var eventData = new EventData((byte)EventCode.ItemProperties, properties);
this.Peer.SendEvent(eventData, new SendParameters { ChannelId = Settings.ItemEventChannel });
}
}
// no response sent
operation.OnComplete();
return null;
}