PlayerPrefs

Hi,

I've created the below to go in a larger piece of code within the Update function. If you need me to paste the remaining code let me know.

The below works in terms of returning the correct value on the debug, but it doesn't actually update the variable on the inspector when 'o' is pressed, then 'm'. I need it to state a weapon has already been picked up as part of the save.

Could someone help me understand why? 'haveWeapon' is a bool so i've had to do the player prefs different as SetBool isn't available. Its strange that the debug states true, but the inspector doesn't update and remains false?

Code (csharp):

1.        
2.  if (Input.GetKeyDown("o"))
3.    
4.     {
5.              PlayerPrefs.SetInt("HaveWeapon", haveWeapon ? 1 : 0);
6.     }
7.        
8.        
9. if (Input.GetKeyDown("m"))
10.      {
11.        
12.               haveWeapon = PlayerPrefs.GetInt("HaveWeapon") == 1 ? true : false;                   
13.             Debug.Log(haveWeapon); 
14.       }
15.  

Many Thanks (p.s i'm new to using player prefs)

 

hi, try

Code (csharp):

1. using PlayerPrefs = PreviewLabs.PlayerPrefs;
2.  
3.  
4. if (Input.GetKeyDown("o"))
5.  
6.    
7.  
8.     {
9.  
10.              PlayerPrefs.SetInt("HaveWeapon", haveWeapon ? 1 : 0);
11.              PlayerPrefs.Flush();
12.     }
13.  

add this method :

Code (csharp):

1.  
2.     public void OnApplicationQuit()
3.     {
4.         PlayerPrefs.Flush();
5.     }

 

But. If you press o and then m, the value won't be changed? What's there to update?

Or do you mean it stays changed after you exit play mode? When you exit play mode all variables will be set back to what they were before you started playing.

You also have to call PlayerPrefs.Save() to actually save the changed prefs, I think.

That isn't default, is it?

 

Hi,

I mean press 'o' then exit and load up the game again and press 'm'. It does save the the correct value of 'true' when you see it in the debug, but it doesn't update on the inspector. So whereas the debug states true the inspector remains as false once the game is loaded again and you press 'm'.

I added PlayerPrefs.Save(); but its still the same result.

tux83, thanks, but i'm unable to add using PlayerPrefs = PreviewLabs.PlayerPrefs; at the top of the code without it producing an error?

'The type or namespace name `PreviewLabs' could not be found. Are you missing a using directive or an assembly reference?'

Thanks

 

Sorry stevedarby02, Download PlayerPrefs.cs file here:

http://www.previewlabs.com/writing-playerprefs-fast/

much better and fast

 

Hi,

I actually did a search after that and found it, downloaded it and tried it. No more errors but the variable is still false even though the debug states it's true.

Thanks

 

you're Welcome !

 

A convenient pattern I use for this sort of thing is to map a property "live" to the Unity3D PlayerPrefs settings.

F'rinstance:

Code (csharp):

1. public class PLAYERSAVESTATE
2. {
3.     const string s_HaveWeapon = "HaveWeapon";
4.     public static bool HaveWeapon
5.     {
6.         get
7.         {
8.             return PlayerPrefs.GetInt( s_HaveWeapon, 0) != 0;
9.         }
10.         set
11.         {
12.             PlayerPrefs.SetInt( s_HaveWeapon, value ? 1 : 0);
13.         }
14.     }
15. }
16.  

Now then wherever you use PLAYERSAVESTATE.HaveWeapon, it will be reflected live in the settings and automatically saved when you stop/start the game. The zero given as the second argument in the .GetInt() call is the default value for the first time the player runs the game.

When the player starts a new game, you can just set it to what you want it to be, using it just like any other variable.

Kurt

 

Thanks. Just to check.

Is the static variable 'HaveWeapon' a new variable or should it replace the existing one 'haveWeapon'?

How would the if statement work in that example?

Many thanks for your help.