4 files changed, 112 insertions, 32 deletions

diff --git a/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs b/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
index 677961d..016871f 100644
--- a/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
+++ b/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
@@ -53,6 +53,9 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
         protected bool m_Enabled = false;
         protected Scene m_aScene;
         protected List<UUID> m_agentsInTransit;
+        private ExpiringCache<UUID, ExpiringCache<ulong, DateTime>> m_bannedRegions =
+                new ExpiringCache<UUID, ExpiringCache<ulong, DateTime>>();
+
 
         #region ISharedRegionModule
 
@@ -600,7 +603,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
 
         #region Agent Crossings
 
-        public void Cross(ScenePresence agent, bool isFlying)
+        public bool Cross(ScenePresence agent, bool isFlying)
         {
             Scene scene = agent.Scene;
             Vector3 pos = agent.AbsolutePosition;
@@ -636,6 +639,8 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                     }
                     else
                     {
+                        agent.InTransit();
+
                         neighboury = b.TriggerRegionY;
                         neighbourx = b.TriggerRegionX;
 
@@ -645,7 +650,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                         agent.ControllingClient.SendAgentAlertMessage(
                             String.Format("Moving you to region {0},{1}", neighbourx, neighboury), false);
                         InformClientToInitateTeleportToLocation(agent, neighbourx, neighboury, newposition, scene);
-                        return;
+                        return true;
                     }
                 }
 
@@ -657,6 +662,8 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                 }
                 else
                 {
+                    agent.InTransit();
+
                     neighboury = ba.TriggerRegionY;
                     neighbourx = ba.TriggerRegionX;
 
@@ -669,7 +676,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                     InformClientToInitateTeleportToLocation(agent, neighbourx, neighboury, newposition, scene);
 
 
-                    return;
+                    return true;
                 }
 
             }
@@ -689,6 +696,8 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                     }
                     else
                     {
+                        agent.InTransit();
+
                         neighboury = ba.TriggerRegionY;
                         neighbourx = ba.TriggerRegionX;
                         Vector3 newposition = pos;
@@ -697,7 +706,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                         agent.ControllingClient.SendAgentAlertMessage(
                             String.Format("Moving you to region {0},{1}", neighbourx, neighboury), false);
                         InformClientToInitateTeleportToLocation(agent, neighbourx, neighboury, newposition, scene);
-                        return;
+                        return true;
                     }
                 }
                 else if (scene.TestBorderCross(pos + northCross, Cardinals.N))
@@ -719,6 +728,8 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                 }
                 else
                 {
+                    agent.InTransit();
+
                     neighboury = b.TriggerRegionY;
                     neighbourx = b.TriggerRegionX;
                     Vector3 newposition = pos;
@@ -727,7 +738,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                     agent.ControllingClient.SendAgentAlertMessage(
                             String.Format("Moving you to region {0},{1}", neighbourx, neighboury), false);
                     InformClientToInitateTeleportToLocation(agent, neighbourx, neighboury, newposition, scene);
-                    return;
+                    return true;
                 }
             }
             else if (scene.TestBorderCross(pos + northCross, Cardinals.N))
@@ -763,9 +774,51 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             }
             */
 
+            ulong neighbourHandle = Utils.UIntsToLong((uint)(neighbourx * Constants.RegionSize), (uint)(neighboury * Constants.RegionSize));
+
+            int x = (int)(neighbourx * Constants.RegionSize), y = (int)(neighboury * Constants.RegionSize);
+
+            ExpiringCache<ulong, DateTime> r;
+            DateTime banUntil;
+
+            if (m_bannedRegions.TryGetValue(agent.ControllingClient.AgentId, out r))
+            {
+                if (r.TryGetValue(neighbourHandle, out banUntil))
+                {
+                    if (DateTime.Now < banUntil)
+                        return false;
+                    r.Remove(neighbourHandle);
+                }
+            }
+            else
+            {
+                r = null;
+            }
+
+            GridRegion neighbourRegion = scene.GridService.GetRegionByPosition(scene.RegionInfo.ScopeID, (int)x, (int)y);
+
+            if (!scene.SimulationService.QueryAccess(neighbourRegion, agent.ControllingClient.AgentId))
+            {
+                if (r == null)
+                {
+                    r = new ExpiringCache<ulong, DateTime>();
+                    r.Add(neighbourHandle, DateTime.Now + TimeSpan.FromSeconds(15), TimeSpan.FromSeconds(15));
+
+                    m_bannedRegions.Add(agent.ControllingClient.AgentId, r, TimeSpan.FromSeconds(45));
+                }
+                else
+                {
+                    r.Add(neighbourHandle, DateTime.Now + TimeSpan.FromSeconds(15), TimeSpan.FromSeconds(15));
+                }
+                return false;
+            }
+
+            agent.InTransit();
+
             CrossAgentToNewRegionDelegate d = CrossAgentToNewRegionAsync;
-            d.BeginInvoke(agent, newpos, neighbourx, neighboury, isFlying, CrossAgentToNewRegionCompleted, d);
+            d.BeginInvoke(agent, newpos, neighbourx, neighboury, neighbourRegion, isFlying, CrossAgentToNewRegionCompleted, d);
 
+            return true;
         }
 
 
@@ -776,7 +829,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
         private void InformClientToInitateTeleportToLocation(ScenePresence agent, uint regionX, uint regionY, Vector3 position, Scene initiatingScene)
         {
 
-            // This assumes that we know what our neighbors are.
+            // This assumes that we know what our neighbours are.
 
             InformClientToInitateTeleportToLocationDelegate d = InformClientToInitiateTeleportToLocationAsync;
             d.BeginInvoke(agent, regionX, regionY, position, initiatingScene,
@@ -820,21 +873,19 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             icon.EndInvoke(iar);
         }
 
-        public delegate ScenePresence CrossAgentToNewRegionDelegate(ScenePresence agent, Vector3 pos, uint neighbourx, uint neighboury, bool isFlying);
+        public delegate ScenePresence CrossAgentToNewRegionDelegate(ScenePresence agent, Vector3 pos, uint neighbourx, uint neighboury, GridRegion neighbourRegion, bool isFlying);
 
         /// <summary>
-        /// This Closes child agents on neighboring regions
+        /// This Closes child agents on neighbouring regions
         /// Calls an asynchronous method to do so..  so it doesn't lag the sim.
         /// </summary>
-        protected ScenePresence CrossAgentToNewRegionAsync(ScenePresence agent, Vector3 pos, uint neighbourx, uint neighboury, bool isFlying)
+        protected ScenePresence CrossAgentToNewRegionAsync(ScenePresence agent, Vector3 pos, uint neighbourx, uint neighboury, GridRegion neighbourRegion, bool isFlying)
         {
+            ulong neighbourHandle = Utils.UIntsToLong((uint)(neighbourx * Constants.RegionSize), (uint)(neighboury * Constants.RegionSize));
+
             m_log.DebugFormat("[ENTITY TRANSFER MODULE]: Crossing agent {0} {1} to {2}-{3}", agent.Firstname, agent.Lastname, neighbourx, neighboury);
 
             Scene m_scene = agent.Scene;
-            ulong neighbourHandle = Utils.UIntsToLong((uint)(neighbourx * Constants.RegionSize), (uint)(neighboury * Constants.RegionSize));
-
-            int x = (int)(neighbourx * Constants.RegionSize), y = (int)(neighboury * Constants.RegionSize);
-            GridRegion neighbourRegion = m_scene.GridService.GetRegionByPosition(m_scene.RegionInfo.ScopeID, (int)x, (int)y);
 
             if (neighbourRegion != null && agent.ValidateAttachments())
             {
@@ -949,7 +1000,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
 
         #region Enable Child Agent
         /// <summary>
-        /// This informs a single neighboring region about agent "avatar".
+        /// This informs a single neighbouring region about agent "avatar".
         /// Calls an asynchronous method to do so..  so it doesn't lag the sim.
         /// </summary>
         public void EnableChildAgent(ScenePresence sp, GridRegion region)
@@ -1010,7 +1061,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             ScenePresence avatar, AgentCircuitData a, GridRegion reg, IPEndPoint endPoint, bool newAgent);
 
         /// <summary>
-        /// This informs all neighboring regions about agent "avatar".
+        /// This informs all neighbouring regions about agent "avatar".
         /// Calls an asynchronous method to do so..  so it doesn't lag the sim.
         /// </summary>
         public void EnableChildAgents(ScenePresence sp)
@@ -1142,7 +1193,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                     catch (ArgumentOutOfRangeException)
                     {
                         m_log.ErrorFormat(
-                           "[ENTITY TRANSFER MODULE]: Neighbour Regions response included the current region in the neighbor list.  The following region will not display to the client: {0} for region {1} ({2}, {3}).",
+                           "[ENTITY TRANSFER MODULE]: Neighbour Regions response included the current region in the neighbour list.  The following region will not display to the client: {0} for region {1} ({2}, {3}).",
                            neighbour.ExternalHostName,
                            neighbour.RegionHandle,
                            neighbour.RegionLocX,
@@ -1222,7 +1273,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                     }
                     #endregion
 
-                    m_log.DebugFormat("[ENTITY TRANSFER MODULE]: {0} is sending {1} EnableSimulator for neighbor region {2} @ {3} " +
+                    m_log.DebugFormat("[ENTITY TRANSFER MODULE]: {0} is sending {1} EnableSimulator for neighbour region {2} @ {3} " +
                         "and EstablishAgentCommunication with seed cap {4}",
                         m_scene.RegionInfo.RegionName, sp.Name, reg.RegionName, reg.RegionHandle, capsPath);
 
diff --git a/OpenSim/Region/Framework/Interfaces/IEntityTransferModule.cs b/OpenSim/Region/Framework/Interfaces/IEntityTransferModule.cs
index 45ca5c5..3eb38b8 100644
--- a/OpenSim/Region/Framework/Interfaces/IEntityTransferModule.cs
+++ b/OpenSim/Region/Framework/Interfaces/IEntityTransferModule.cs
@@ -42,7 +42,7 @@ namespace OpenSim.Region.Framework.Interfaces
 
         bool TeleportHome(UUID id, IClientAPI client);
 
-        void Cross(ScenePresence agent, bool isFlying);
+        bool Cross(ScenePresence agent, bool isFlying);
 
         void AgentArrivedAtDestination(UUID agent);
 
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index bb9a748..5caf06c 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -4022,14 +4022,16 @@ namespace OpenSim.Region.Framework.Scenes
             RequestTeleportLocation(remoteClient, info.RegionHandle, position, Vector3.Zero, (uint)(TPFlags.SetLastToTarget | TPFlags.ViaLandmark));
         }
 
-        public void CrossAgentToNewRegion(ScenePresence agent, bool isFlying)
+        public bool CrossAgentToNewRegion(ScenePresence agent, bool isFlying)
         {
             if (m_teleportModule != null)
-                m_teleportModule.Cross(agent, isFlying);
+                return m_teleportModule.Cross(agent, isFlying);
             else
             {
                 m_log.DebugFormat("[SCENE]: Unable to cross agent to neighbouring region, because there is no AgentTransferModule");
             }
+
+            return false;
         }
 
         public void SendOutChildAgentUpdates(AgentPosition cadu, ScenePresence presence)
diff --git a/OpenSim/Region/Framework/Scenes/ScenePresence.cs b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
index db9a95b..a1ca9c5 100644
--- a/OpenSim/Region/Framework/Scenes/ScenePresence.cs
+++ b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
@@ -3102,29 +3102,57 @@ namespace OpenSim.Region.Framework.Scenes
                 // Makes sure avatar does not end up outside region
                 if (neighbor <= 0)
                 {
-                    if (!needsTransit)
+                    if (needsTransit)
                     {
                         if (m_requestedSitTargetUUID == UUID.Zero)
                         {
+                            bool isFlying = m_physicsActor.Flying;
+                            RemoveFromPhysicalScene();
+
                             Vector3 pos = AbsolutePosition;
                             if (AbsolutePosition.X < 0)
-                                pos.X += Velocity.X;
+                                pos.X += Velocity.X * 2;
                             else if (AbsolutePosition.X > Constants.RegionSize)
-                                pos.X -= Velocity.X;
+                                pos.X -= Velocity.X * 2;
                             if (AbsolutePosition.Y < 0)
-                                pos.Y += Velocity.Y;
+                                pos.Y += Velocity.Y * 2;
                             else if (AbsolutePosition.Y > Constants.RegionSize)
-                                pos.Y -= Velocity.Y;
+                                pos.Y -= Velocity.Y * 2;
+                            Velocity = Vector3.Zero;
                             AbsolutePosition = pos;
+
+                            AddToPhysicalScene(isFlying);
                         }
                     }
                 }
                 else if (neighbor > 0)
-                    CrossToNewRegion();
+                {
+                    if (!CrossToNewRegion())
+                    {
+                        if (m_requestedSitTargetUUID == UUID.Zero)
+                        {
+                            bool isFlying = m_physicsActor.Flying;
+                            RemoveFromPhysicalScene();
+
+                            Vector3 pos = AbsolutePosition;
+                            if (AbsolutePosition.X < 0)
+                                pos.X += Velocity.X * 2;
+                            else if (AbsolutePosition.X > Constants.RegionSize)
+                                pos.X -= Velocity.X * 2;
+                            if (AbsolutePosition.Y < 0)
+                                pos.Y += Velocity.Y * 2;
+                            else if (AbsolutePosition.Y > Constants.RegionSize)
+                                pos.Y -= Velocity.Y * 2;
+                            Velocity = Vector3.Zero;
+                            AbsolutePosition = pos;
+
+                            AddToPhysicalScene(isFlying);
+                        }
+                    }
+                }
             }
             else
             {
-                RemoveFromPhysicalScene();
                 // This constant has been inferred from experimentation
                 // I'm not sure what this value should be, so I tried a few values.
                 timeStep = 0.04f;
@@ -3173,16 +3201,15 @@ namespace OpenSim.Region.Framework.Scenes
         /// If the neighbor accepts, remove the agent's viewable avatar from this scene
         /// set them to a child agent.
         /// </summary>
-        protected void CrossToNewRegion()
+        protected bool CrossToNewRegion()
         {
-            InTransit();
             try
             {
-                m_scene.CrossAgentToNewRegion(this, m_physicsActor.Flying);
+                return m_scene.CrossAgentToNewRegion(this, m_physicsActor.Flying);
             }
             catch
             {
-                m_scene.CrossAgentToNewRegion(this, false);
+                return m_scene.CrossAgentToNewRegion(this, false);
             }
         }