using UnityEngine;
using System.Collections;

public class EnemyHRD: MonoBehaviour
{
    private ScoreHRD scoreH;    // Reference to the Score script.
    
    private HighScoreHRD highscoreH;
    
    public GameObject NewHighScoreH;
   
    public void OnTriggerEnter (Collider other)
     {
  if (other.gameObject.tag == "Gem")
      {
   ScoreHRD.scoreH += 10;

   Destroy (other.gameObject);

   }
  }
  
    public void Update()
    {
         if (ScoreHRD.scoreH > PlayerPrefs.GetInt ("highscoreHRD"))
   {
             PlayerPrefs.SetInt ("highscoreHRD", ScoreHRD.scoreH);
    NewHighScoreH.SetActive (true);
         }
  }
}

using UnityEngine;
using System.Collections;

public class ScoreHRD : MonoBehaviour
{
    public int scoreH = 0;     // The player's score.\
  
    private int previousScoreH = 0;   // The score in the previous frame.

    void Update ()
    {
  // Set the score text.
  GetComponent<GUIText>().text = "Score: " + scoreH;

  // If the score has changed...
  if(previousScoreH!= scoreH)
  // Set the previous score to this frame's score.
  previousScoreH = scoreH;
    }

}