public void BeginGame()
 {
     directions.SetActive(false);
     playPauseButton.gameObject.SetActive(true);
     scoreText.gameObject.SetActive(true);
     CommonObjects.GetThrust().EnableThrust();
 }
 void Update()
 {
     if (Input.GetKeyDown(KeyCode.Space) && Time.timeScale == 1)
     {
         if (CanDropAnotherPackage() && CommonObjects.GetThrust().IsGeneratingThrust())
         {
             DropPackage();
         }
     }
 }
 public void EndGame()
 {
     CommonObjects.GetThrust().DisableThrust();
     scoreText.gameObject.SetActive(false);
     playPauseButton.gameObject.SetActive(false);
     DetermineWinner();
     if (!SucceededAtLevel())
     {
         done.transform.Find("Continue").gameObject.GetComponent <Button>().interactable = false;
     }
     done.SetActive(true);
 }