8 files changed, 104 insertions, 11 deletions
diff --git a/source/gameengine/SceneGraph/SG_Controller.h b/source/gameengine/SceneGraph/SG_Controller.h
index d65a2f0c256..c32885b915f 100644
--- a/source/gameengine/SceneGraph/SG_Controller.h
+++ b/source/gameengine/SceneGraph/SG_Controller.h
@@ -101,7 +101,9 @@ public:
 	enum SG_Controller_option {
 		SG_CONTR_NODEF = 0,
 		SG_CONTR_IPO_IPO_AS_FORCE,
-		SG_CONTR_IPO_FORCES_ACT_LOCAL,
+		SG_CONTR_IPO_IPO_ADD,
+		SG_CONTR_IPO_LOCAL,
+		SG_CONTR_IPO_RESET,
 		SG_CONTR_CAMIPO_LENS,
 		SG_CONTR_CAMIPO_CLIPEND,
 		SG_CONTR_CAMIPO_CLIPSTART,
diff --git a/source/gameengine/SceneGraph/SG_IObject.cpp b/source/gameengine/SceneGraph/SG_IObject.cpp
index 1a8dc894ce9..d0bdac5c8f0 100644
--- a/source/gameengine/SceneGraph/SG_IObject.cpp
+++ b/source/gameengine/SceneGraph/SG_IObject.cpp
@@ -104,7 +104,7 @@ SetSGClientObject(
 }
 
 
-	void
+	bool
 SG_IObject::
 ActivateReplicationCallback(
 	SG_IObject *replica
@@ -112,8 +112,10 @@ ActivateReplicationCallback(
 	if (m_callbacks.m_replicafunc)
 	{
 		// Call client provided replication func
-		m_callbacks.m_replicafunc(replica,m_SGclientObject,m_SGclientInfo);
+		if (m_callbacks.m_replicafunc(replica,m_SGclientObject,m_SGclientInfo) == NULL)
+			return false;
 	}
+	return true;
 };	
 
 	void
@@ -125,6 +127,11 @@ ActivateDestructionCallback(
 		// Call client provided destruction function on this!
 		m_callbacks.m_destructionfunc(this,m_SGclientObject,m_SGclientInfo);
 	}
+	else
+	{
+		// no callback but must still destroy the node to avoid memory leak
+		delete this;
+	}
 }
 
 	void
diff --git a/source/gameengine/SceneGraph/SG_IObject.h b/source/gameengine/SceneGraph/SG_IObject.h
index 438ab48c556..7f6bdfbbb1c 100644
--- a/source/gameengine/SceneGraph/SG_IObject.h
+++ b/source/gameengine/SceneGraph/SG_IObject.h
@@ -202,7 +202,7 @@ public:
 
 protected :
 
-		void
+		bool
 	ActivateReplicationCallback(
 		SG_IObject *replica
 	);
diff --git a/source/gameengine/SceneGraph/SG_Node.cpp b/source/gameengine/SceneGraph/SG_Node.cpp
index 73e16863173..8de7ac83477 100644
--- a/source/gameengine/SceneGraph/SG_Node.cpp
+++ b/source/gameengine/SceneGraph/SG_Node.cpp
@@ -68,7 +68,7 @@ SG_Node* SG_Node::GetSGReplica()
 	SG_Node* replica = new SG_Node(*this);
 	if (replica == NULL) return NULL;
 
-	ProcessSGReplica(replica);
+	ProcessSGReplica(&replica);
 	
 	return replica;
 }
@@ -76,25 +76,42 @@ SG_Node* SG_Node::GetSGReplica()
 	void 
 SG_Node::
 ProcessSGReplica(
-	SG_Node* replica
+	SG_Node** replica
 ){
 	// Apply the replication call back function.
-	ActivateReplicationCallback(replica);
+	if (!ActivateReplicationCallback(*replica)) 
+	{
+		delete (*replica);
+		*replica = NULL;
+		return;
+	}
 
 	// clear the replica node of it's parent.
-	static_cast<SG_Node*>(replica)->m_SGparent = NULL;
+	static_cast<SG_Node*>(*replica)->m_SGparent = NULL;
 
 	if (m_children.begin() != m_children.end())
 	{
 		// if this node has children, the replica has too, so clear and clone children
-		replica->ClearSGChildren();
+		(*replica)->ClearSGChildren();
 	
 		NodeList::iterator childit;
 		for (childit = m_children.begin();childit!=m_children.end();++childit)
 		{
-			replica->AddChild((*childit)->GetSGReplica());
+			SG_Node* childnode = (*childit)->GetSGReplica();
+			if (childnode)
+				(*replica)->AddChild(childnode);
 		}
 	}
+	// Nodes without children and without client object are
+	// not worth to keep, they will just take up CPU
+	// This can happen in partial replication of hierarchy
+	// during group duplication.
+	if ((*replica)->m_children.empty() && 
+		(*replica)->GetSGClientObject() == NULL)
+	{
+		delete (*replica);
+		*replica = NULL;
+	}
 }
 
 
@@ -148,6 +165,27 @@ GetRootSGParent(
 	return (m_SGparent ? (const SG_Node*) m_SGparent->GetRootSGParent() : (const SG_Node*) this);
 }
 
+	bool
+SG_Node::
+IsVertexParent()
+{
+	if (m_parent_relation)
+	{
+		return m_parent_relation->IsVertexRelation();
+	}
+	return false;
+}
+
+	bool
+SG_Node::
+IsSlowParent()
+{
+	if (m_parent_relation)
+	{
+		return m_parent_relation->IsSlowRelation();
+	}
+	return false;
+}
 
 	void 
 SG_Node::
diff --git a/source/gameengine/SceneGraph/SG_Node.h b/source/gameengine/SceneGraph/SG_Node.h
index 4808f6f7d94..ffaaad861e2 100644
--- a/source/gameengine/SceneGraph/SG_Node.h
+++ b/source/gameengine/SceneGraph/SG_Node.h
@@ -152,6 +152,22 @@ public:
 	) ;
 
 
+	/**
+	 * Return vertex parent status.
+	 */
+
+		bool	
+	IsVertexParent(
+	) ;
+	
+	/**
+	 * Return slow parent status.
+	 */
+
+		bool	
+	IsSlowParent(
+	) ;
+
 	/**		
 	 * Update the spatial data of this node. Iterate through
 	 * the children of this node and update their world data.
@@ -189,7 +205,7 @@ private:
 
 		void		
 	ProcessSGReplica(
-		SG_Node* replica
+		SG_Node** replica
 	);
 
 	/**
diff --git a/source/gameengine/SceneGraph/SG_ParentRelation.h b/source/gameengine/SceneGraph/SG_ParentRelation.h
index 1d211a9f39f..6507cb98519 100644
--- a/source/gameengine/SceneGraph/SG_ParentRelation.h
+++ b/source/gameengine/SceneGraph/SG_ParentRelation.h
@@ -90,6 +90,25 @@ public :
 	NewCopy(
 	) = 0;
 
+	/**
+	 * Vertex Parent Relation are special: they don't propagate rotation
+	 */
+	virtual
+		bool
+	IsVertexRelation(
+	) { 
+		return false;
+	}
+	
+	/**
+	 * Need this to see if we are able to adjust time-offset from the python api
+	 */
+	virtual
+		bool
+	IsSlowRelation(
+	) { 
+		return false;
+	}
 protected :
 
 	/** 
diff --git a/source/gameengine/SceneGraph/SG_Spatial.cpp b/source/gameengine/SceneGraph/SG_Spatial.cpp
index 18049592977..5ba116e59db 100644
--- a/source/gameengine/SceneGraph/SG_Spatial.cpp
+++ b/source/gameengine/SceneGraph/SG_Spatial.cpp
@@ -87,6 +87,13 @@ SG_Spatial::
 	delete (m_parent_relation);
 }
 
+	SG_ParentRelation *
+SG_Spatial::
+GetParentRelation(
+){
+	return m_parent_relation;
+}
+
 	void
 SG_Spatial::
 SetParentRelation(
diff --git a/source/gameengine/SceneGraph/SG_Spatial.h b/source/gameengine/SceneGraph/SG_Spatial.h
index a70784472a7..28848b0f933 100644
--- a/source/gameengine/SceneGraph/SG_Spatial.h
+++ b/source/gameengine/SceneGraph/SG_Spatial.h
@@ -83,6 +83,10 @@ public:
 	SetParentRelation(
 		SG_ParentRelation *relation
 	);
+	
+		SG_ParentRelation *
+	GetParentRelation(
+	);
 
 
 	/**