BGE Python API

Free python modules defined within the blendfile between loading scenes since they would end up accessing old GameLogic, Rasterizer modules as well as old game engine data in the module namespace which can cause problems.

source/gameengine/Ketsji/KX_PythonInit.cpp

@@ -102,7 +102,7 @@ extern "C" {
 #include "GPU_material.h"
 
 static void setSandbox(TPythonSecurityLevel level);
-
+static void clearGameModules();
 
 // 'local' copy of canvas ptr, for window height/width python scripts
 static RAS_ICanvas* gp_Canvas = NULL;
@@ -1402,6 +1402,10 @@ PyObject* initGamePythonScripting(const STR_String& progname, TPythonSecurityLev
 	initPyTypes();
 	
 	bpy_import_main_set(maggie);
+	
+	/* run this to clear game modules and user modules which
+	 * may contain references to in game data */
+	clearGameModules();
 
 	PyObject* moduleobj = PyImport_AddModule("__main__");
 	return PyModule_GetDict(moduleobj);
@@ -1434,6 +1438,9 @@ static void clearGameModules()
 	clearModule(modules, "Mathutils");	
 	clearModule(modules, "BGL");	
 	PyErr_Clear(); // incase some of these were alredy removed.
+	
+	/* clear user defined modules */
+	importClearUserModules();
 }
 
 void exitGamePythonScripting()