public override async Task StateEntry()
{
await _avatar.TriggerOnTransitStageChanged(TransitStage.SendEstablishChildPresence, _avatar.RideOnPrims);
SimpleRegionInfo destination = _avatar.TransitArgs.DestinationRegion;
//do we have a presence on the destination?
if (!_avatar.ScenePresence.RemotePresences.HasPresenceOnRegion(destination.RegionHandle))
{
//no, we need to establish a new presence
Tuple <EstablishPresenceResult, string> result =
await _avatar.ScenePresence.RemotePresences.EstablishPresenceOnRegionLocked(destination, false, true);
if (result.Item1 != EstablishPresenceResult.Success)
{
//something broke
_avatar.ScenePresence.ControllingClient.SendAlertMessage(
"Unable to complete transfer to new region: " + result.Item2);
throw new SendAvatarException(
String.Format("Could not establish presence on remote region: {0}", result.Item2));
}
RollbackActions.Push(() => { _avatar.ScenePresence.RemotePresences.DropRemotePresenceLocked(destination, true).Wait(); });
}
AvatarRemotePresence remotePresence = null;
_avatar.ScenePresence.RemotePresences.TryGetRemotePresenceLocked(destination.RegionHandle,
(AvatarRemotePresence pres) =>
{
remotePresence = pres;
}
);
if (remotePresence == null)
{
//something is horked
throw new SendAvatarException(
String.Format("Presence could not be established on new region for {0}", _avatar.ScenePresence.Name));
}
//we have a presence now, we can send the child agent update
await _avatar.TriggerOnTransitStageChanged(TransitStage.SendAvatarHandoff, _avatar.RideOnPrims);
//the ChildAgentUpdate below will always stop attachment scripts to transmit their state
//if anything from this point on fails, we need to start the scripts running again
RollbackActions.Push(() =>
{
List <SceneObjectGroup> attachments = _avatar.ScenePresence.GetAttachments();
foreach (var att in attachments)
{
att.EndTransit(false);
}
}
);
// Invoke the agent2 entry point
ChildAgentUpdate2Response rc = this.SendChildAgentUpdate2();
switch (rc)
{
case ChildAgentUpdate2Response.Ok:
break; // continue normally
case ChildAgentUpdate2Response.AccessDenied:
throw new SendAvatarException(
String.Format("Region entry denied for {0}", _avatar.ScenePresence.Name));
case ChildAgentUpdate2Response.MethodNotAvailalble:
throw new SendAvatarException(
String.Format("Region change not available for {0}", _avatar.ScenePresence.Name));
case ChildAgentUpdate2Response.Error:
default:
throw new SendAvatarException(
String.Format("Region change failed for {0}", _avatar.ScenePresence.Name));
}
//this avatar is now considered a child agent
_avatar.ScenePresence.MakeChildAgent(_avatar.TransitArgs.DestinationRegion.RegionHandle);
//if there is a failure, we will need to restore the user as a root agent
Vector3 restorePos = _avatar.ScenePresence.AbsolutePosition;
Util.ForceValidRegionXY(ref restorePos);
RollbackActions.Push(() => { _avatar.ScenePresence.MakeRootAgent(restorePos); });
//the user is ready to be transfered
IEventQueue eq = _avatar.ScenePresence.Scene.RequestModuleInterface <IEventQueue>();
bool eventWasQueued = false;
switch (_avatar.TransitArgs.Type)
{
case TransitType.OutboundCrossing:
eventWasQueued = eq.CrossRegion(_avatar.TransitArgs.DestinationRegion.RegionHandle,
_avatar.TransitArgs.LocationInDestination,
_avatar.ScenePresence.Velocity,
_avatar.TransitArgs.DestinationRegion.ExternalEndPoint,
remotePresence.PresenceInfo.FullCapsSeedURL,
_avatar.ScenePresence.UUID,
_avatar.ScenePresence.ControllingClient.SessionId);
break;
case TransitType.OutboundTeleport:
eventWasQueued = eq.TeleportFinishEvent(_avatar.TransitArgs.DestinationRegion.RegionHandle,
13,
_avatar.TransitArgs.DestinationRegion.ExternalEndPoint,
4,
(uint)_avatar.TransitArgs.TeleportFlags,
remotePresence.PresenceInfo.FullCapsSeedURL,
_avatar.ScenePresence.UUID);
break;
default:
throw new SendAvatarException(String.Format("Invalid transit type {0} for sending avatar {1}",
_avatar.TransitArgs.Type));
}
if (!eventWasQueued)
{
throw new SendAvatarException(String.Format("Unable to enqueue transfer event for {0}",
_avatar.ScenePresence.Name));
}
//wait for confirmation of avatar on the other side
await _avatar.WaitForRelease();
//matching endtransit for all attachments
List <SceneObjectGroup> sentAttachments = _avatar.ScenePresence.GetAttachments();
foreach (var att in sentAttachments)
{
att.EndTransit(true);
}
_avatar.ScenePresence.AttachmentsCrossedToNewRegion();
//unsit the SP if appropriate
if (_avatar.TransitArgs.RideOnPart != null)
{
_avatar.TransitArgs.RideOnPart.RemoveSeatedAvatar(_avatar.ScenePresence, false);
}
//this avatar is history.
_avatar.ScenePresence.Reset(_avatar.TransitArgs.DestinationRegion);
_avatar.ScenePresence.Scene.EventManager.TriggerAvatarLeavingRegion(_avatar.ScenePresence,
_avatar.TransitArgs.DestinationRegion);
}