* Added llApplyImpulse in the global frame. The object must be physical before this'll do anything. Be careful with this function as it's easy to loose prim.

OpenSim/Region/Environment/Scenes/SceneObjectGroup.cs

@@ -578,6 +578,16 @@ namespace OpenSim.Region.Environment.Scenes
             SetPartAsRoot(newPart);
         }
 
+        public void applyImpulse(PhysicsVector impulse)
+        {
+            SceneObjectPart rootpart = m_rootPart;
+            if (m_rootPart.PhysActor != null)
+            {
+                m_rootPart.PhysActor.AddForce(impulse);
+                m_scene.PhysicsScene.AddPhysicsActorTaint(m_rootPart.PhysActor);
+            }
+        }
+
         public void SetRootPartOwner(SceneObjectPart part, LLUUID cAgentID, LLUUID cGroupID)
         {
             part.LastOwnerID = part.OwnerID;

OpenSim/Region/Environment/Scenes/SceneObjectPart.cs

@@ -520,6 +520,21 @@ namespace OpenSim.Region.Environment.Scenes
 
         protected PrimitiveBaseShape m_shape;
 
+        /// <summary>
+        /// hook to the physics scene to apply impulse
+        /// This is sent up to the group, which then finds the root prim
+        /// and applies the force on the root prim of the group
+        /// </summary>
+        /// <param name="impulse">Vector force</param>
+        public void ApplyImpulse(LLVector3 impulsei)
+        {
+            PhysicsVector impulse = new PhysicsVector(impulsei.X, impulsei.Y, impulsei.Z);
+            if (m_parentGroup != null)
+            {
+                m_parentGroup.applyImpulse(impulse);
+            }
+        }
+
         public void TriggerScriptChangedEvent(Changed val)
         {
             if (m_parentGroup != null)

OpenSim/Region/Physics/OdePlugin/ODEPrim.cs

@@ -27,6 +27,7 @@
 */
 
 using System;
+using System.Collections.Generic;
 using Axiom.Math;
 using Ode.NET;
 using OpenSim.Framework;
@@ -51,6 +52,9 @@ namespace OpenSim.Region.Physics.OdePlugin
         private bool m_taintPhysics = false;
         public bool m_taintremove = false;
 
+        private bool m_taintforce = false;
+        private List<PhysicsVector> m_forcelist = new List<PhysicsVector>();
+
         private IMesh _mesh;
         private PrimitiveBaseShape _pbs;
         private OdeScene _parent_scene;
@@ -355,6 +359,9 @@ namespace OpenSim.Region.Physics.OdePlugin
             if (m_taintshape)
                 changeshape(timestep);
             //
+
+            if (m_taintforce)
+                changeAddForce(timestep);
         }
 
         public void Move(float timestep)
@@ -541,6 +548,27 @@ namespace OpenSim.Region.Physics.OdePlugin
             m_taintshape = false;
         }
 
+        public void changeAddForce(float timestamp)
+        {
+            lock (m_forcelist)
+            {
+                //OpenSim.Framework.Console.MainLog.Instance.Verbose("PHYSICS", "dequeing forcelist");
+                if (IsPhysical)
+                {
+                    PhysicsVector iforce = new PhysicsVector();
+                    for (int i = 0; i < m_forcelist.Count; i++)
+                    {
+                        iforce = iforce + (m_forcelist[i]*100);
+                    }   
+                    d.BodyEnable(Body);
+                    d.BodyAddForce(Body, iforce.X, iforce.Y, iforce.Z);
+                }
+                m_forcelist.Clear();
+            }
+            m_taintforce = false;
+
+        }
+
         public override bool IsPhysical
         {
             get { return m_isphysical; }
@@ -663,6 +691,9 @@ namespace OpenSim.Region.Physics.OdePlugin
 
         public override void AddForce(PhysicsVector force)
         {
+            m_forcelist.Add(force);
+            m_taintforce = true;
+            //OpenSim.Framework.Console.MainLog.Instance.Verbose("PHYSICS", "Added Force:" + force.ToString() +  " to prim at " + Position.ToString());
         }
 
         public override PhysicsVector RotationalVelocity

OpenSim/Region/ScriptEngine/Common/LSL_BuiltIn_Commands.cs

@@ -792,7 +792,22 @@ namespace OpenSim.Region.ScriptEngine.Common
 
         public void llApplyImpulse(LSL_Types.Vector3 force, int local)
         {
-            NotImplemented("llApplyImpulse");
+            //No energy force yet
+            if (local == 1)
+            {
+                NotImplemented("llApplyImpulse Local Force");
+            }
+            else
+            {
+                if (force.x > 20000)
+                    force.x = 20000;
+                if (force.y > 20000)
+                    force.y = 20000;
+                if (force.z > 20000)
+                    force.z = 20000;
+
+                m_host.ApplyImpulse(new LLVector3((float)force.x,(float)force.y,(float)force.z));
+            }
         }
 
         public void llApplyRotationalImpulse(LSL_Types.Vector3 force, int local)