Adding High Score to Game menu from existing code?

Question

Hey i have read through a bunch of similar questions asked but I am having trouble applying it to my existing code. I would like my high score to be displayed on the game menu but I don't know how to extract the highest score from the score code i am using now. I know i have to set player prefs and compare high score to regular score but i am having trouble wrapping my head around it. My score code is as follows:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;
 
 public class Score : MonoBehaviour
 {
     public static int scoreValue = 0;
     Text score;
     // Start is called before the first frame update
     void Start()
     {
         score = GetComponent<Text>();
         scoreValue = 0;
     }
 
     // Update is called once per frame
     void Update()
     {
         score.text = "Score: " + scoreValue;
     }
 
 
  
 }

Then I have that linked to when a game object (platform) gets destroyed i add 10 points. not sure if thats important but that code is as follows:

 sing System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;
 
 public class Eraser1 : MonoBehaviour
 {
     // Start is called before the first frame update
 
     void OnTriggerEnter2D(Collider2D o)
     {
 
         if (o.tag == "turf1")
         {
             Score.scoreValue += 10;
             Destroy(o.gameObject);
         }
     }
 
     // Update is called once per frame
     void Update()
     {
       
     }
 }

Any help is greatly appreciated.

Answer 1

I would make your Score class into a singleton, then let your Eraser (or whatever is giving points) call into it. The singleton will deal with the score, highscore, saving, etc. Here is an example:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;
 
 
 /// <summary>
 /// Just place this in your scene somewhere and let objects send it points via UpdateScore method
 /// </summary>
 public sealed class ScoreManager : MonoBehaviour
 {
     // Simple singleton pattern
     static ScoreManager instance;
     public static ScoreManager Instance
     {
         get
         {
             if (instance == null)
             {
                 instance = FindObjectOfType<ScoreManager>();
             }
 
             return instance;
         }
     }
 
     [SerializeField] Text highScoreText;
     [SerializeField] Text currentScoreText;
 
     int currentScore;
     public int CurrentScore
     {
         get { return currentScore; }
         private set
         {
             currentScore = value;
             UpdateScoreText();
         }
     }
 
     // When the game launches, set the high score
     private void Awake()
     {
         SetHighScoreText();
     }
 
     // Just for testing - should delete the entire method
     // Uncomment to use this as a test
     //private void Update()
     //{
     //    if (Input.GetKeyDown(KeyCode.Space))
     //    {
     //        UpdateScore(10);
     //    }
     //    else if (Input.GetKeyDown(KeyCode.Return))
     //    {
     //        CheckForNewHighScore();
     //    }
     //}
 
 
     // Call this method to add more points (which will auto update the text for you)
     // Called like this ScoreManager.Instance.UpdateScore(10); from wherever points are given
     public void UpdateScore(int delta)
     {
         CurrentScore += delta;
     }
 
 
     private void UpdateScoreText()
     {
         currentScoreText.text = CurrentScore.ToString();
     }
 
 
     private void SetHighScoreText()
     {
         // We try to find a highscore, if there isn't one, we default to 0
         int highScore = PlayerPrefs.GetInt("HighScore", 0);
 
         highScoreText.text = highScore.ToString();
     }
 
 
     // Game ended - call this to set new highscore if there is one (and save it)
     public void CheckForNewHighScore()
     {
         int highScore = PlayerPrefs.GetInt("HighScore", 0);
         if (currentScore > highScore)
         {
             PlayerPrefs.SetInt("HighScore", currentScore);
             PlayerPrefs.Save();
 
             // Update high score text
             SetHighScoreText();
         }
     }
 }

No need to use an update method for scores. Just let the property deal with it when its updated. This makes sure that whenever a score gets updated, so does the text.

Hope this helps a little.

Adding High Score to Game menu from existing code?

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