Time for action – creating a restart method

To refactor the existing level's restart code, you'll need to update GameBehavior, as follows:

  public class GameBehavior : MonoBehaviour 
 {
     // ... No changes needed ...
 
     // 1
     void RestartLevel()
     {
         SceneManager.LoadScene(0);
         Time.timeScale = 1.0f;
     }
 
     void OnGUI()
     {
         GUI.Box(new Rect(20, 20, 150, 25), "Player Health: " + 
           _playerLives);
         GUI.Box(new Rect(20, 50, 150, 25), "Items Collected: " + 
           _itemsCollected);
         GUI.Label(new Rect(Screen.width / 2 - 100, Screen.height - 
            50, 300, 50), labelText);
 
         if (showWinScreen)
         {
             if (GUI.Button(new Rect(Screen.width/2 - 100, 
             Screen.height/2 - 50, 200, 100), "YOU WON!"))
             {
                 // 2
                 RestartLevel();
             }
         }
 
         if(showLossScreen)
         {
             if...