Python API get/setObject update for Actuators. (SetParent, AddObject, Camera and TrackTo)

* bugfix for BGE python api - SetParent actuator getObject would segfault if the object was not set.
* Added utility function ConvertPythonToGameObject() that can take a GameObject, string or None and set the game object from this since it was being done in a number of places.
* allow setObject(None), since no object is valid for actuators, Python should be able to set this.
* added optional argument for getObject() so it returns the KX_GameObject rather then its name, would prefer this be default but it could break existing games.

1 files changed, 7 insertions, 0 deletions

diff --git a/source/gameengine/Expressions/PyObjectPlus.h b/source/gameengine/Expressions/PyObjectPlus.h
index 595940274c4..f433a08faba 100644
--- a/source/gameengine/Expressions/PyObjectPlus.h
+++ b/source/gameengine/Expressions/PyObjectPlus.h
@@ -121,6 +121,13 @@ static inline void Py_Fatal(char *M) {
 	}; \
     static char method_name##_doc[]; \
 
+#define KX_PYMETHOD_DOC_VARARGS(class_name, method_name)			\
+	PyObject* Py##method_name(PyObject* self, PyObject* args); \
+	static PyObject* sPy##method_name( PyObject* self, PyObject* args) { \
+		return ((class_name*) self)->Py##method_name(self, args);		\
+	}; \
+    static char method_name##_doc[]; \
+
 #define KX_PYMETHOD_DOC_O(class_name, method_name)			\
 	PyObject* Py##method_name(PyObject* self, PyObject* value); \
 	static PyObject* sPy##method_name( PyObject* self, PyObject* value) { \