Patch from Charlie:

Cleared the python dictionary at the end of the game engine, should fix some issues,
also reverted the python controller changes, related to this

This should fix the following bugs:
[ #3789 ]
[ #3815 ]

possiblyy fixes:
[ #3834 ]

source/gameengine/BlenderRoutines/BL_KetsjiEmbedStart.cpp

@@ -311,7 +311,7 @@ extern "C" void StartKetsjiShell(struct ScrArea *area,
 			PyObject* dictionaryobject = initGamePythonScripting("Ketsji", psl_Lowest);
 			ketsjiengine->SetPythonDictionary(dictionaryobject);
 			initRasterizer(rasterizer, canvas);
-			initGameLogic(startscene);
+			PyObject *gameLogic = initGameLogic(startscene);
 			initGameKeys();
 			initPythonConstraintBinding();
 
@@ -370,11 +370,11 @@ extern "C" void StartKetsjiShell(struct ScrArea *area,
 				exitstring = ketsjiengine->GetExitString();
 				
 				// when exiting the mainloop
+				dictionaryClearByHand(gameLogic);
 				exitGamePythonScripting();
 				ketsjiengine->StopEngine();
 				networkdevice->Disconnect();
 			}
-
 			if (sceneconverter)
 			{
 				delete sceneconverter;

source/gameengine/GameLogic/SCA_PythonController.cpp

@@ -278,7 +278,7 @@ void SCA_PythonController::Trigger(SCA_LogicManager* logicmgr)
 	Py_DECREF(excdict);*/
 
 
-#if 1
+#if 0
 	PyObject *excdict= PyDict_Copy(m_pythondictionary);
 	PyObject* resultobj = PyEval_EvalCode((PyCodeObject*)m_bytecode,
 		excdict, 
@@ -286,13 +286,13 @@ void SCA_PythonController::Trigger(SCA_LogicManager* logicmgr)
 		);
 	PyDict_Clear(excdict);
 	Py_DECREF(excdict);
-#endif
+#else
 
-#if 0
 	PyObject* resultobj = PyEval_EvalCode((PyCodeObject*)m_bytecode,
 		m_pythondictionary, 
 		m_pythondictionary
 		);
+
 #endif
 
 	if (resultobj)

source/gameengine/Ketsji/KX_KetsjiEngine.h

@@ -96,12 +96,14 @@ private:
 	int					m_activecam;
 	bool				m_bFixedTime;
 	
+	
 	bool				m_firstframe;
 	int					m_currentFrame;
 
 	double				m_frameTime;//discrete timestamp of the 'game logic frame'
 	double				m_clockTime;//current time
 	double				m_previousClockTime;//previous clock time
+	double				m_remainingTime;
 
 	static double			m_ticrate;
 

source/gameengine/Ketsji/KX_PythonInit.cpp

@@ -784,6 +784,15 @@ PyObject* initGameLogic(KX_Scene* scene) // quick hack to get gravity hook
 	return d;
 }
 
+void dictionaryClearByHand(PyObject *dict)
+{
+	// Clears the dictionary by hand:
+	// This prevents, extra references to global variables
+	// inside the GameLogic dictionary when the python interpreter is finalized.
+	// which allows the scene to safely delete them :)
+	// see: (space.c)->start_game
+  	if(dict) PyDict_Clear(dict);
+}
 
 
 // Python Sandbox code

source/gameengine/Ketsji/KX_PythonInit.h

@@ -50,6 +50,8 @@ PyObject*	initGamePlayerPythonScripting(const STR_String& progname, TPythonSecur
 void		exitGamePlayerPythonScripting();
 PyObject*	initGamePythonScripting(const STR_String& progname, TPythonSecurityLevel level);
 void		exitGamePythonScripting();
+void		dictionaryClearByHand(PyObject *dict);
+
 void PHY_SetActiveScene(class KX_Scene* scene);
 #include "MT_Vector3.h"
 

source/gameengine/Ketsji/KX_Scene.cpp

@@ -181,7 +181,7 @@ KX_Scene::~KX_Scene()
 
 	if(m_objectlist)
 		m_objectlist->Release();
-	
+
 	if (m_parentlist)
 		m_parentlist->Release();
 	
@@ -210,6 +210,7 @@ KX_Scene::~KX_Scene()
 	{
 		delete m_bucketmanager;
 	}
+
 	//Py_DECREF(m_attrlist);
 }
 

source/gameengine/Physics/Bullet/CcdPhysicsEnvironment.cpp

@@ -528,6 +528,7 @@ bool	CcdPhysicsEnvironment::proceedDeltaTime(double curTime,float timeStep)
 
 	if (!SimdFuzzyZero(timeStep))
 	{
+		
 
 		// define this in blender, the stepsize is 30 hertz, 60 hertz works much better 
 //#define SPLIT_TIMESTEP 1