Changing engine to shared library

src/Engine/MinimalEngine.cpp

@@ -1,4 +1,14 @@
 #include "MinimalEngine.h"
+#include <mutex>
 
-std::map<void *, void *> registeredObjects;
-std::mutex registeredObjectsLock;
+std::map<void*, void*>& getRegisteredObjects() 
+{
+    static std::map<void*, void*> map;
+    return map;
+}
+
+std::mutex& getRegisteredObjectLock() 
+{
+    static std::mutex lock;
+    return lock;
+}