public IEnumerator ChangeStateCoroutine(MenuStates gameState)
{
m_changingState = true;
//get old state
MenuState currentState = GetState(m_menuState);
//get new state
MenuState newState = GetState(gameState);
Debug.Log("States Fetched");
//transittion from old state
yield return(StartCoroutine(currentState.OnExit()));
Debug.Log("Exited state");
//transittion into new state
yield return(StartCoroutine(newState.OnEnter()));
Debug.Log("entered state");
m_menuState = gameState;
m_changingState = false;
yield return(null);
}