Why my score it going down really fast when using Time.deltaTime?

Unity Engine
1

Why my score it going down really fast when using Time.deltaTime? I’m trying to make a score system when every second you loss 1 point, but when I try to do this it make it go everything fast. I tried playing around with the TimeScale, fixed update, fixedtime and stuff but nothing to seem to work. Is this something have to do with the UI? What am I doing wrong? Here’s my code

public float timer = 0;
    private string currentTime;
    Text text;

    void Start()
    {
        text = GetComponent<Text> ();
        score = 50000;
    }

    void Update()
    {
        timer += Time.deltaTime;
        currentTime = string.Format ("{0:0}", timer);

        score -= (int) timer;

        if (score < 0)
            score = 0;

        text.text = "" + score;
    }

You can link me to other questions are like this if there are.

2

It seems like the timer goes down and the score goes up

3

I know i was playing around with this so ill change it. And for some reason its doing the same thing.

4

The mistake you’ve made is that you increase the timer then take it away from the current score. So it won’t remove 1 a second it will remove the time elapsed every frame.

You can do something like this to get what you want. Alternatively you can change the line “score -=(int) timer;” to “score -= Time.deltaTime;”

public float timer = 0;  
private string currentTime;   
Text text;
int baseScore;
int curScore;

void Start()  {      
text = GetComponent<Text> ();      
baseScore = 50000; 
}  

void Update()   {       
timer += Time.deltaTime;       
currentTime = string.Format ("{0:0}", timer);       
curScore = Mathf.RoundToInt(baseScore - (int) timer);
if (curScore < 0)
curScore = 0;
text.text = "" + curScore;  
}
1 Like
5

Thank you LordConstant, it works and now i understand! :slight_smile:

6

Hmm, I’m more a C++ then a C# person, but wouldn’t the following be much more simple.

    private float lastTime;

    void Start() {
        lastTime = Time.time;
    }

    void Update () {
        if (Time.time - lastTime > 1) {
            score--;
            lastTime = Time.time;
        }
    }

Greets,

Jan

1 Like
7

At that point you are just calculating the delta time though. Which can be accessed with Time.deltaTime.

But you are right that way can be done. I just decided to adapt the code to fit with the current method.

1 Like