Restore previous client AO behaviour by not allowing them to remove the default animation but continue to allow scripts to do so.

This keeps the fix from http://opensimulator.org/mantis/view.php?id=6327
and fixes the behaviour regression in http://opensimulator.org/mantis/view.php?id=6483
Animations may still exhibit different behaviour if both scripts and clients are adjusting animations.
A change in the behaviour of client AO to not remove all animations may be a better long term approach.

3 files changed, 25 insertions, 6 deletions

diff --git a/OpenSim/Region/Framework/Scenes/Animation/AnimationSet.cs b/OpenSim/Region/Framework/Scenes/Animation/AnimationSet.cs
index 65ae445..66edfed 100644
--- a/OpenSim/Region/Framework/Scenes/Animation/AnimationSet.cs
+++ b/OpenSim/Region/Framework/Scenes/Animation/AnimationSet.cs
@@ -87,13 +87,24 @@ namespace OpenSim.Region.Framework.Scenes.Animation
             return false;
         }
 
-        public bool Remove(UUID animID)
+        /// <summary>
+        /// Remove the specified animation
+        /// </summary>
+        /// <param name='animID'></param>
+        /// <param name='allowNoDefault'>
+        /// If true, then the default animation can be entirely removed. 
+        /// If false, then removing the default animation will reset it to the simulator default (currently STAND).
+        /// </param>
+        public bool Remove(UUID animID, bool allowNoDefault)
         {
             lock (m_animations)
             {
                 if (m_defaultAnimation.AnimID == animID)
                 {
-                    m_defaultAnimation = new OpenSim.Framework.Animation(UUID.Zero, 1, UUID.Zero);
+                    if (allowNoDefault)
+                        m_defaultAnimation = new OpenSim.Framework.Animation(UUID.Zero, 1, UUID.Zero);
+                    else
+                        ResetDefaultAnimation();
                 }
                 else if (HasAnimation(animID))
                 {
diff --git a/OpenSim/Region/Framework/Scenes/Animation/ScenePresenceAnimator.cs b/OpenSim/Region/Framework/Scenes/Animation/ScenePresenceAnimator.cs
index 8bd3cf9..e92a087 100644
--- a/OpenSim/Region/Framework/Scenes/Animation/ScenePresenceAnimator.cs
+++ b/OpenSim/Region/Framework/Scenes/Animation/ScenePresenceAnimator.cs
@@ -112,7 +112,15 @@ namespace OpenSim.Region.Framework.Scenes.Animation
             AddAnimation(animID, objectID);
         }
 
-        public void RemoveAnimation(UUID animID)
+        /// <summary>
+        /// Remove the specified animation
+        /// </summary>
+        /// <param name='animID'></param>
+        /// <param name='allowNoDefault'>
+        /// If true, then the default animation can be entirely removed. 
+        /// If false, then removing the default animation will reset it to the simulator default (currently STAND).
+        /// </param>
+        public void RemoveAnimation(UUID animID, bool allowNoDefault)
         {
             if (m_scenePresence.IsChildAgent)
                 return;
@@ -122,7 +130,7 @@ namespace OpenSim.Region.Framework.Scenes.Animation
                     "[SCENE PRESENCE ANIMATOR]: Removing animation {0} {1} for {2}", 
                     GetAnimName(animID), animID, m_scenePresence.Name);
 
-            if (m_animations.Remove(animID))
+            if (m_animations.Remove(animID, allowNoDefault))
                 SendAnimPack();
         }
 
@@ -138,7 +146,7 @@ namespace OpenSim.Region.Framework.Scenes.Animation
             if (animID == UUID.Zero)
                 return;
 
-            RemoveAnimation(animID);
+            RemoveAnimation(animID, true);
         }
 
         public void ResetAnimations()
diff --git a/OpenSim/Region/Framework/Scenes/ScenePresence.cs b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
index db2e95e..a90872e 100644
--- a/OpenSim/Region/Framework/Scenes/ScenePresence.cs
+++ b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
@@ -2259,7 +2259,7 @@ namespace OpenSim.Region.Framework.Scenes
 
         public void HandleStopAnim(IClientAPI remoteClient, UUID animID)
         {
-            Animator.RemoveAnimation(animID);
+            Animator.RemoveAnimation(animID, false);
         }
 
         /// <summary>