changing the way Time works

open_engine/include/open_engine/core/time.hpp

@@ -10,17 +10,17 @@ namespace OpenEngine {
             Time(const Time&) = delete;            // No copy constructor
             Time& operator=(const Time&) = delete;
 
-            void Update();
+            static void Update();
 
-            static Time& Get()
+            static void Init()
             {
                 if (instance == nullptr)
                     instance.reset(new Time);
-
-                return *instance;
             }
 
-            double DeltaTime() const { return delta_time.count(); };
+            static double DeltaTime() {
+                return instance->delta_time.count();
+            };
 
         private:
             Time() {};