playerprefs and UI.

Questions & Answers
1

am i doing wrong?
i want to the score increase on text UI when the object was destroyed, but when the object was destroyed, the score isn’t increase or change.

    int score = 0;
    public Text ScoreText;

    void Start()
    {
        ScoreText.text = "Score: " + PlayerPrefs.GetInt("myScore");
    }

    void Update()
    {
        for (var i = 0; i < Input.touchCount; ++i)
        {
            if (Input.GetTouch(i).phase == TouchPhase.Began)
            {
                RaycastHit hit;
                Ray ray = Camera.main.ScreenPointToRay(Input.GetTouch(i).position);
                if (Physics.Raycast(ray, out hit))
                Destroy(hit.collider.gameObject);
                score += 1;
                PlayerPrefs.SetInt("myScore", score);              
            }
        }
    }
}

i have already assign the text UI on inspector of the object which i attached this script.

2

that’s because you set your UI in void Start() which only happens the very first frame when you start the game. try putting in on your Update()

3

In Update, you are only setting the ‘PlayerPrefs’, you have to update the ‘ScoreText.text’ value also, for displaying your score.

Also, increase the score only when the object gets destroyed as @Priyanshu suggested.

4

thank you guys. That very helpful

i just relize when i try @incorrect suggested. the score always increase when i touch the screen.
then i try @Priyanshu suggest, i put the line destroy, score, scoreText, and playerprefs in {} after ‘if’ and it work.

    int score = 0;
    public Text ScoreText;

    void Start()
    {
        
    }

    void Update()
    {
        for (var i = 0; i < Input.touchCount; ++i)
        {
            if (Input.GetTouch(i).phase == TouchPhase.Began)
            {
                RaycastHit hit;
                Ray ray = Camera.main.ScreenPointToRay(Input.GetTouch(i).position);
                if (Physics.Raycast(ray, out hit))
                {
                    Destroy(hit.collider.gameObject);
                    score += 1;
                    PlayerPrefs.SetInt("myScore", score);
                    ScoreText.text = "Score: " + score;
                }  
            }
        }
    }
}

thank you so much guys. :smiley: