private static OperationResponse ItemOperationAddInterestArea(Item item, AddInterestArea operation, InterestArea interestArea) { if (item.Disposed) { return operation.GetOperationResponse((int)ReturnCode.ItemNotFound, "ItemNotFound"); } lock (interestArea.SyncRoot) { interestArea.AttachToItem(item); interestArea.ViewDistanceEnter = operation.ViewDistanceEnter; interestArea.ViewDistanceExit = operation.ViewDistanceExit; interestArea.UpdateInterestManagement(); } operation.OnComplete(); return operation.GetOperationResponse(MethodReturnValue.Ok); }
/// <summary> /// Handles operation AddInterestArea: Creates a new InterestArea and optionally attaches it to an existing Item. /// </summary> public OperationResponse OperationAddInterestArea(PeerBase peer, OperationRequest request, SendParameters sendParameters) { var operation = new AddInterestArea(peer.Protocol, request); if (!operation.IsValid) { return new OperationResponse(request.OperationCode) { ReturnCode = (int)ReturnCode.InvalidOperationParameter, DebugMessage = operation.GetErrorMessage() }; } operation.OnStart(); InterestArea interestArea; if (this.TryGetInterestArea(operation.InterestAreaId, out interestArea)) { return operation.GetOperationResponse((int)ReturnCode.InterestAreaAlreadyExists, "InterestAreaAlreadyExists"); } interestArea = new ClientInterestArea(this.Peer, operation.InterestAreaId, this.World); this.AddInterestArea(interestArea); // attach interestArea to item if (string.IsNullOrEmpty(operation.ItemId) == false) { Item item; bool actorItem = this.TryGetItem(operation.ItemId, out item); if (actorItem) { // we are already in the item thread, invoke directly return ItemOperationAddInterestArea(item, operation, interestArea); } else { if (this.World.ItemCache.TryGetItem(operation.ItemId, out item) == false) { return operation.GetOperationResponse((int)ReturnCode.ItemNotFound, "ItemNotFound"); } else { // second parameter (peer) allows us to send an error event to the client (in case of an error) item.Fiber.Enqueue(() => this.ExecItemOperation(() => ItemOperationAddInterestArea(item, operation, interestArea), sendParameters)); // send response later return null; } } } else { // free floating interestArea lock (interestArea.SyncRoot) { interestArea.Position = operation.Position; interestArea.ViewDistanceEnter = operation.ViewDistanceEnter; interestArea.ViewDistanceExit = operation.ViewDistanceExit; interestArea.UpdateInterestManagement(); } return operation.GetOperationResponse(MethodReturnValue.Ok); } }