/// <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));
}
}
/// <summary>
/// Handles operation <see cref = "AddInterestArea" />: Creates a new <see cref = "InterestArea" /> and optionally attaches it to an existing <see cref = "Item" />.
/// </summary>
/// <param name = "peer">
/// The client peer.
/// </param>
/// <param name = "request">
/// The request.
/// </param>
/// <param name = "sendParameters">
/// The send Parameters.
/// </param>
/// <returns>
/// An <see cref = "OperationResponse" /> with error code <see cref = "ReturnCode.Ok" /> or <see cref = "ReturnCode.InterestAreaAlreadyExists" />.
/// If the <see cref = "InterestArea" /> is supposed to be attached to an <see cref = "Item" /> error code <see cref = "ReturnCode.ItemNotFound" /> could be returned.
/// </returns>
/// <remarks>
/// The <see cref = "InterestArea" /> is created even if error code <see cref = "ReturnCode.ItemNotFound" /> is returned.
/// </remarks>
public override OperationResponse Handle(MmoActor actor, OperationRequest request, SendParameters sendParameters)
{
var operation = new AddInterestArea(actor.Peer.Protocol, request);
if (!operation.IsValid)
{
return(new OperationResponse(request.OperationCode)
{
ReturnCode = (int)ReturnCode.InvalidOperationParameter,
DebugMessage = operation.GetErrorMessage()
});
}
operation.OnStart();
InterestArea interestArea;
if (actor.TryGetInterestArea(operation.InterestAreaId, out interestArea))
{
return(operation.GetOperationResponse((int)ReturnCode.InterestAreaAlreadyExists, "InterestAreaAlreadyExists"));
}
interestArea = new MmoClientInterestArea(actor.Peer, operation.InterestAreaId, actor.World);
actor.AddInterestArea(interestArea);
// attach interestArea to item
Item item;
if (operation.ItemType.HasValue && string.IsNullOrEmpty(operation.ItemId) == false)
{
IWorld world = actor.World;
bool actorItem = actor.TryGetItem(operation.ItemType.Value, operation.ItemId, out item);
if (actorItem == false)
{
if (world.ItemCache.TryGetItem(operation.ItemType.Value, operation.ItemId, out item) == false)
{
return(operation.GetOperationResponse((int)ReturnCode.ItemNotFound, "ItemNotFound"));
}
}
if (actorItem)
{
// we are already in the item thread, invoke directly
return(ItemOperationAddInterestArea(item, operation, interestArea));
}
// second parameter (peer) allows us to send an error event to the client (in case of an error)
item.Fiber.Enqueue(() => actor.ExecItemOperation(() => ItemOperationAddInterestArea(item, operation, interestArea), sendParameters));
// send response later
return(null);
}
// free floating interestArea
if (operation.Position != null)
{
lock (interestArea.SyncRoot) {
interestArea.Position = operation.Position.ToVector(true);
interestArea.ViewDistanceEnter = operation.ViewDistanceEnter.ToVector(true);
interestArea.ViewDistanceExit = operation.ViewDistanceExit.ToVector(true);
interestArea.UpdateInterestManagement();
}
}
return(operation.GetOperationResponse(MethodReturnValue.Ok));
}