BGE patch: Relink actuators with target within group when duplicating group; generalize protection against object deletion for all actuators that point to objects.

Certain actuators hold a pointer to an objects: Property,
SceneCamera, AddObject, Camera, Parent, TractTo. When a
group is duplicated, the actuators that point to objects
within the group will be relinked to point to the
replicated objects and not to the original objects.
This helps to setup self-contained group with a camera
following a character for example.
This feature also works when adding a single object
(and all its children) with the AddObject actuator.

The second part of the patch extends the protection
against object deletion to all the actuators of the above
list (previously, only the TrackTo, AddObject and
Property actuators were protected). In case the target
object of these actuators is deleted, the BGE won't
crash.

1 files changed, 5 insertions, 2 deletions

diff --git a/source/gameengine/Ketsji/KX_ParentActuator.h b/source/gameengine/Ketsji/KX_ParentActuator.h
index 86dcd4e6c12..5255abf2e42 100644
--- a/source/gameengine/Ketsji/KX_ParentActuator.h
+++ b/source/gameengine/Ketsji/KX_ParentActuator.h
@@ -47,7 +47,7 @@ class KX_ParentActuator : public SCA_IActuator
 	int m_mode;
 	
 	/** Object to set as parent */
-	CValue *m_ob;
+	SCA_IObject *m_ob;
 	
 	
 
@@ -62,12 +62,15 @@ class KX_ParentActuator : public SCA_IActuator
  
 	KX_ParentActuator(class SCA_IObject* gameobj,
 						int mode,
-						CValue *ob,
+						SCA_IObject *ob,
 						PyTypeObject* T=&Type);
 	virtual ~KX_ParentActuator();
 	virtual bool Update();
 	
 	virtual CValue* GetReplica();
+	virtual void ProcessReplica();
+	virtual void KX_ParentActuator::Relink(GEN_Map<GEN_HashedPtr, void*> *obj_map);
+	virtual bool KX_ParentActuator::UnlinkObject(SCA_IObject* clientobj);
 	
 	/* --------------------------------------------------------------------- */
 	/* Python interface ---------------------------------------------------- */