protected void HandleInput()
        {
            HandleKeyboard();
            HandleMouse();
        }

        protected void HandleKeyboard()
        {
            List<Keys> pressedKeys = new List<Keys>(Keyboard.GetState().GetPressedKeys());

            foreach( var key in pressedKeys )
            {
                if( m_holdedKeys.Contains( key ) )
                   OnKeyHold( key );
                else
                {
                    OnKeyPressed(key);
                    m_holdedKeys.Add( key );
                }
            }

            foreach( var key in m_holdedKeys )
                if( !pressedKeys.Contains( key ) )
                    OnKeyReleased( key );

            m_holdedKeys.RemoveAll( key => !pressedKeys.Contains( key ) );
        }

        protected void HandleMouse()
        {
            MouseState currState = Mouse.GetState();
            Vector2 movement = currState.Position.ToVector2();
            if(m_prevMouseState.LeftButton == ButtonState.Pressed &&
               currState.LeftButton == ButtonState.Pressed)
            {

                movement -= m_prevMouseState.Position.ToVector2();
                OnMouseHold(currState.Position.ToVector2(),movement);
            }
            else if(m_prevMouseState.LeftButton == ButtonState.Pressed &&
               currState.LeftButton != ButtonState.Pressed)
            {
                movement -= m_pressedMousePos;
                OnMouseReleased(currState.Position.ToVector2(),movement);
            }
            else if( currState.LeftButton == ButtonState.Pressed)
            {
                OnMousePressed(currState.Position.ToVector2());
            }
            m_prevMouseState = Mouse.GetState();
        }

        protected void OnKeyPressed( Keys pressedKey )
        {
            switch( pressedKey )
            {
                case Keys.Escape:
                    Exit();
                    break;
                default:
                    break;

            }
        }

        protected void OnKeyHold( Keys holdedKey )
        {
            switch( holdedKey )
            {
                case Keys.D:
                    test.Move(new Vector2(5,0));
                    break;
                case Keys.A:
                    test.Move(new Vector2(-5,0));
                    break;
                default:
                    break;

            }
        }

        protected void OnKeyReleased( Keys releasedKey )
        {

        }

        protected void OnMousePressed(Vector2 mousePos )
        {
            m_pressedMousePos = mousePos;
        }

        protected void OnMouseHold(Vector2 mousePos, Vector2 movement )
        {

        }

        protected void OnMouseReleased(Vector2 mousePos, Vector2 movement )
        {

        }