public override async Task StateEntry()
{
//no matter what happens at this point we want to make sure the avatar doesnt try to immediately recross should we have
//a failure. bounce them off the border
if (_avatar.TransitArgs.Type == TransitType.OutboundCrossing && _avatar.TransitArgs.RideOnGroup == null)
{
Vector3 backVel = -_avatar.ScenePresence.Velocity;
RollbackActions.Push(() =>
{
Vector3 newpos = _avatar.ScenePresence.AbsolutePosition + (backVel * 2.0f);
Util.ForceValidRegionXYZ(ref newpos);
_avatar.ScenePresence.AbsolutePosition = newpos;
});
}
//assert that this avatar is fully in this region before beginning a send
if (_avatar.ScenePresence.Connection.State != OpenSim.Framework.AvatarConnectionState.Established)
{
throw new InvalidOperationException("An avatar can not begin transition to a new region while already in transit");
}
//assert that this avatar is not currently establishing connections to other regions
if (_avatar.ScenePresence.RemotePresences.HasConnectionsEstablishing())
{
// _avatar.ScenePresence.ControllingClient.SendAlertMessage("Can not move to a new region, connections are still being established");
throw new InvalidOperationException("An avatar can not begin transition to a new region while connections are being established to neighbor regions");
}
//if we're riding on a prim, wait for the all clear before moving on
if (_avatar.TransitArgs.RideOnPart != null)
{
bool success = await _avatar.WaitForRemoteObjectCreation();
if (!success)
{
_avatar.ScenePresence.ControllingClient.SendAlertMessage("Unable to create object in remote region");
throw new SendAvatarException("Remote object creation failed");
}
}
//listeners to this event will stop all traffic and suspend physics for the avatar
//there is nothing else we need to do in this state
await _avatar.TriggerOnTransitStageChanged(TransitStage.SendBegin, _avatar.RideOnPrims);
RollbackActions.Push(() =>
{
var task = _avatar.TriggerOnTransitStageChanged(TransitStage.SendError, _avatar.RideOnPrims);
task.Wait();
});
var nextState = new SendAvatarState(_avatar, this);
await _avatar.SetNewState(nextState);
}
