6 files changed, 66 insertions, 29 deletions

diff --git a/OpenSim/Region/Application/OpenSimBase.cs b/OpenSim/Region/Application/OpenSimBase.cs
index d2dce24..ab606a3 100644
--- a/OpenSim/Region/Application/OpenSimBase.cs
+++ b/OpenSim/Region/Application/OpenSimBase.cs
@@ -730,8 +730,6 @@ namespace OpenSim
             clientServer = clientNetworkServers;
             scene.LoadWorldMap();
 
-            Vector3 regionExtent = new Vector3(regionInfo.RegionSizeX, regionInfo.RegionSizeY, regionInfo.RegionSizeZ);
-            scene.PhysicsScene = GetPhysicsScene(scene.RegionInfo.RegionName, regionExtent);
             scene.PhysicsScene.RequestAssetMethod = scene.PhysicsRequestAsset;
             scene.PhysicsScene.SetTerrain(scene.Heightmap.GetFloatsSerialised());
             scene.PhysicsScene.SetWaterLevel((float) regionInfo.RegionSettings.WaterHeight);
@@ -747,10 +745,13 @@ namespace OpenSim
         protected override Scene CreateScene(RegionInfo regionInfo, ISimulationDataService simDataService,
             IEstateDataService estateDataService, AgentCircuitManager circuitManager)
         {
+            Vector3 regionExtent = new Vector3(regionInfo.RegionSizeX, regionInfo.RegionSizeY, regionInfo.RegionSizeZ);
+            PhysicsScene physicsScene = GetPhysicsScene(regionInfo.RegionName, regionExtent);
+
             SceneCommunicationService sceneGridService = new SceneCommunicationService();
 
             return new Scene(
-                regionInfo, circuitManager, sceneGridService,
+                regionInfo, circuitManager, physicsScene, sceneGridService,
                 simDataService, estateDataService,
                 Config, m_version);
         }
diff --git a/OpenSim/Region/CoreModules/Framework/Library/LibraryModule.cs b/OpenSim/Region/CoreModules/Framework/Library/LibraryModule.cs
index 69d7e16..d10c9b4 100644
--- a/OpenSim/Region/CoreModules/Framework/Library/LibraryModule.cs
+++ b/OpenSim/Region/CoreModules/Framework/Library/LibraryModule.cs
@@ -159,7 +159,7 @@ namespace OpenSim.Region.CoreModules.Framework.Library
             }
 
             RegionInfo regInfo = new RegionInfo();
-            Scene m_MockScene = new Scene(regInfo);
+            Scene m_MockScene = new Scene(regInfo, null);
             LocalInventoryService invService = new LocalInventoryService(lib);
             m_MockScene.RegisterModuleInterface<IInventoryService>(invService);
             m_MockScene.RegisterModuleInterface<IAssetService>(m_Scene.AssetService);
diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/Tests/GridConnectorsTests.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/Tests/GridConnectorsTests.cs
index 25ae689..aa5f889 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/Tests/GridConnectorsTests.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/Tests/GridConnectorsTests.cs
@@ -85,7 +85,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid.Tests
             r1.ExternalHostName = "127.0.0.1";
             r1.HttpPort = 9001;
             r1.InternalEndPoint = new System.Net.IPEndPoint(System.Net.IPAddress.Parse("0.0.0.0"), 0);
-            Scene s = new Scene(new RegionInfo());
+            Scene s = new Scene(new RegionInfo(), null);
             s.RegionInfo.RegionID = r1.RegionID;
             m_LocalConnector.AddRegion(s);
             
@@ -97,7 +97,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid.Tests
             r2.ExternalHostName = "127.0.0.1";
             r2.HttpPort = 9002;
             r2.InternalEndPoint = new System.Net.IPEndPoint(System.Net.IPAddress.Parse("0.0.0.0"), 0);
-            s = new Scene(new RegionInfo());
+            s = new Scene(new RegionInfo(), null);
             s.RegionInfo.RegionID = r2.RegionID;
             m_LocalConnector.AddRegion(s);
 
@@ -109,7 +109,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid.Tests
             r3.ExternalHostName = "127.0.0.1";
             r3.HttpPort = 9003;
             r3.InternalEndPoint = new System.Net.IPEndPoint(System.Net.IPAddress.Parse("0.0.0.0"), 0);
-            s = new Scene(new RegionInfo());
+            s = new Scene(new RegionInfo(), null);
             s.RegionInfo.RegionID = r3.RegionID;
             m_LocalConnector.AddRegion(s);
 
@@ -121,7 +121,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid.Tests
             r4.ExternalHostName = "127.0.0.1";
             r4.HttpPort = 9004;
             r4.InternalEndPoint = new System.Net.IPEndPoint(System.Net.IPAddress.Parse("0.0.0.0"), 0);
-            s = new Scene(new RegionInfo());
+            s = new Scene(new RegionInfo(), null);
             s.RegionInfo.RegionID = r4.RegionID;
             m_LocalConnector.AddRegion(s);
 
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index f87ae47..1639ee4 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -103,7 +103,29 @@ namespace OpenSim.Region.Framework.Scenes
         /// <summary>
         /// If false then physical objects are disabled, though collisions will continue as normal.
         /// </summary>
-        public bool PhysicsEnabled { get; set; }
+        public bool PhysicsEnabled 
+        { 
+            get 
+            {
+                return m_physicsEnabled;
+            }
+
+            set
+            {
+                m_physicsEnabled = value;
+
+                if (PhysicsScene != null)
+                {
+                    IPhysicsParameters physScene = PhysicsScene as IPhysicsParameters;
+
+                    if (physScene != null)
+                        physScene.SetPhysicsParameter(
+                            "Active", m_physicsEnabled.ToString(), PhysParameterEntry.APPLY_TO_NONE);
+                }
+            }
+        }
+
+        private bool m_physicsEnabled;
 
         /// <summary>
         /// If false then scripts are not enabled on the smiulator
@@ -712,11 +734,11 @@ namespace OpenSim.Region.Framework.Scenes
 
         #region Constructors
 
-        public Scene(RegionInfo regInfo, AgentCircuitManager authen,
+        public Scene(RegionInfo regInfo, AgentCircuitManager authen, PhysicsScene physicsScene,
                      SceneCommunicationService sceneGridService,
                      ISimulationDataService simDataService, IEstateDataService estateDataService,
                      IConfigSource config, string simulatorVersion)
-            : this(regInfo)
+            : this(regInfo, physicsScene)
         {
             m_config = config;
             MinFrameTime = 0.089f;
@@ -789,21 +811,6 @@ namespace OpenSim.Region.Framework.Scenes
             EventManager.OnLandObjectRemoved +=
                 new EventManager.LandObjectRemoved(simDataService.RemoveLandObject);
 
-            m_sceneGraph = new SceneGraph(this);
-
-            // If the scene graph has an Unrecoverable error, restart this sim.
-            // Currently the only thing that causes it to happen is two kinds of specific
-            // Physics based crashes.
-            //
-            // Out of memory
-            // Operating system has killed the plugin
-            m_sceneGraph.UnRecoverableError 
-                += () => 
-                    { 
-                        m_log.ErrorFormat("[SCENE]: Restarting region {0} due to unrecoverable physics crash", Name); 
-                        RestartNow(); 
-                    };
-
             RegisterDefaultSceneEvents();
 
             // XXX: Don't set the public property since we don't want to activate here.  This needs to be handled 
@@ -1014,8 +1021,24 @@ namespace OpenSim.Region.Framework.Scenes
             StatsReporter.OnStatsIncorrect += m_sceneGraph.RecalculateStats;
         }
 
-        public Scene(RegionInfo regInfo) : base(regInfo)
-        {
+        public Scene(RegionInfo regInfo, PhysicsScene physicsScene) : base(regInfo)
+        {            
+            m_sceneGraph = new SceneGraph(this);
+            m_sceneGraph.PhysicsScene = physicsScene;
+
+            // If the scene graph has an Unrecoverable error, restart this sim.
+            // Currently the only thing that causes it to happen is two kinds of specific
+            // Physics based crashes.
+            //
+            // Out of memory
+            // Operating system has killed the plugin
+            m_sceneGraph.UnRecoverableError 
+                += () => 
+            { 
+                m_log.ErrorFormat("[SCENE]: Restarting region {0} due to unrecoverable physics crash", Name); 
+                RestartNow(); 
+            };
+
             PhysicalPrims = true;
             CollidablePrims = true;
             PhysicsEnabled = true;
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs b/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
index 8b4df05..867d6ff 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
@@ -54,6 +54,14 @@ public static class BSParam
     // ===================
     // From:
 
+    /// <summary>
+    /// Set whether physics is active or not.
+    /// </summary>
+    /// <remarks>
+    /// Can be enabled and disabled to start and stop physics.
+    /// </remarks>
+    public static bool Active { get; private set; }
+
     public static bool UseSeparatePhysicsThread { get; private set; }
     public static float PhysicsTimeStep { get; private set; }
 
@@ -373,6 +381,8 @@ public static class BSParam
     //    v = value (appropriate type)
     private static ParameterDefnBase[] ParameterDefinitions =
     {
+        new ParameterDefn<bool>("Active", "If 'true', false then physics is not active",
+            false ),
         new ParameterDefn<bool>("UseSeparatePhysicsThread", "If 'true', the physics engine runs independent from the simulator heartbeat",
             false ),
         new ParameterDefn<float>("PhysicsTimeStep", "If separate thread, seconds to simulate each interval",
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs b/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs
index 17d26a9..e517389 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs
@@ -821,7 +821,10 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
         while (m_initialized)
         {
             int beginSimulationRealtimeMS = Util.EnvironmentTickCount();
-            DoPhysicsStep(BSParam.PhysicsTimeStep);
+
+            if (BSParam.Active)
+                DoPhysicsStep(BSParam.PhysicsTimeStep);
+
             int simulationRealtimeMS = Util.EnvironmentTickCountSubtract(beginSimulationRealtimeMS);
             int simulationTimeVsRealtimeDifferenceMS = ((int)(BSParam.PhysicsTimeStep*1000f)) - simulationRealtimeMS;