Save variable value

Unity Engine
1

Hi. I have script that is some kind of score system. It’s working like I wanted. Now I need to save variable value after level has been unloaded and load that value after getting again into same level. But after I load level again I get value of 0. This is my script:

#pragma strict
public var buck : int;
 
public var ScoreBoard : GUIText;
 
function Start () 
{
 
}
 
function Update () 
{
 
    if (Input.GetKeyDown("space"))
    {
        buck += 1;
        ScoreBoard.text = ("") +buck;
    }
 
}

Now I’m saving variable value with this code:

function setScores()
{
    PlayerPrefs.SetInt("newScore", buck);
} 
 
function getScores()
{
    PlayerPrefs.GetInt("newScore");
}

And after level has been loaded again I have this code to load variable:

function OnLevelWasLoaded (level : int) {
       if (level == 2)
       { 
         ScoreBoard.text = ("") +newScore;    
       }
}

If I use +newScore I get error saying that there is no variable called newScore, but if I use buck variable I get value 0, as I guess it’s using value from the top where variable was declared. Any way I can fix this?

2

I can only assume that your setScores() and getScores() functions are being called from somewhere at appropriate times - your posted code doesn’t show that. However, the obvious problem is in getScores(). There, you’re not actually storing the value you’re retrieving from PlayerPrefs. A call to PlayerPrefs.GetInt() returns an int value, so you need to store that value for later use. Something like this:

function getScores()
{
    buck = PlayerPrefs.GetInt("newScore");
}

Jeff

3

I did that but I still get same result. Here is my entire code:

#pragma strict
public var buck : int = 0;
public var ScoreBoard : GUIText; // GUI text for score


function Start () 
{

}

function Update () 
	{

		if (Input.GetKeyDown("space"))
		{
        	buck += 1;
        	ScoreBoard.text = ("") +buck;
		}
		
}

function setScores()
{
	PlayerPrefs.SetInt("newScore", buck);
}


function getScores()
{
	PlayerPrefs.GetInt("newScore");
} 

function getScoresVar()
{
    buck = PlayerPrefs.GetInt("newScore");
}

function OnLevelWasLoaded (level : int) 
{
	if (level == 2)
		{		
			ScoreBoard.text = ("") +buck;	
		}
}

If I wasn’t clear enought, I’m closing this level with Application.LoadLevel("Some_level") and I’m again loading this level with score script inside newly loaded “Some_level”. But it appears that I’m not saving variable value correctly.

4

Again, I’m left wondering if/when/where you call setScores(). Does that ever get called to save the score?

5

Should I delete function getScoresVar and put this: buck = PlayerPrefs.GetInt(“newScore”); inside getScores function? Sorry, I’m not so good at programming.

6

It doesn’t really matter what the function is called. Whatever it’s called though, you need the “buck = …” code to store the retrieved value…

Jeff

7

I added this:

function OnLevelWasLoaded (level : int) 
{
	if (level == 2)
		{
			buck = PlayerPrefs.GetInt("newScore");	
			ScoreBoard.text = ("") +buck;	
		}
}

and now after loading level again I always get 5, no matter how many times I press “space” to make buck variable higher. Any fix for this?

8

But, again, where is “setScores()” called from?

9

Thank you very much, I solved it. I called setScores() inside update function and now it’s working perfectly. Thank you once again!