Fixes Mantis #3194. Thank you kindly, Godfrey for a patch that:

fixes llSetLinkPrimitiveParams() - PRIM_ROTATION rotates the prim 
containing the script, rather than the specified child prim 

1 files changed, 19 insertions, 1 deletions

diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index 0734e1c..fcd94a4 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -6433,7 +6433,25 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                             return;
 
                         LSL_Rotation q = rules.GetQuaternionItem(idx++);
-                        llSetRot(q);
+                        // try to let this work as in SL...
+                        if (part.ParentID == 0)
+                        {
+                            // special case: If we are root, rotate complete SOG to new rotation
+                            SetRot(part, Rot2Quaternion(q));
+                                        }
+                                    else
+                                    {
+                                        // we are a child. The rotation values will be set to the one of root modified by rot, as in SL. Don't ask.
+                                        SceneObjectGroup group = part.ParentGroup;
+                                        if (group != null) // a bit paranoid, maybe
+                                        {
+                                            SceneObjectPart rootPart = group.RootPart;
+                                            if (rootPart != null) // again, better safe than sorry
+                                            {
+                                                SetRot(part, rootPart.RotationOffset * Rot2Quaternion(q));
+                                            }
+                                        }
+                                    }
 
                         break;