OnGUI and a hundred sliders

Dear forum

Code (csharp):

1. function OnGUI () {
2.     slider_0 = GUI.HorizontalSlider ( Rect ( 20, 20, 100, 10 ), 5, 0, 10);
3.     slider_1 = GUI.HorizontalSlider ( Rect ( 20, 40, 100, 10 ), 5, 0, 10);
4.     slider_2 = GUI.HorizontalSlider ( Rect ( 20, 60, 100, 10 ), 5, 0, 10);
5.     // ... and so on ... //
6.        
7.     if( GUI.changed ){
8.         // yes something changed ... but which slider exactly? //
9.     }
10. }

Do I have to create lastValue-variables for each slider and compare every new slider value to the according lastValue to find out exactly which slider has moved ... or is there a less crude way of locating the changed slider?

Note that I need the sliders on the same script because I want to arrange them with GUILayout.

For the sake of about 100 lines of code
~ce

 

Code (csharp):

1. var            howManSliders : int = 20;
2. var            mySliders : float [];
3. //var            myPrevValues : float [];
4.  
5. function Start () {
6.     // stuff our array full of zeroes
7.     var tmp = new Array ();
8.     for (var i : int = 0; i < howManSliders; i++) {
9.         tmp.Add (0.0);
10.     }
11.     mySliders = tmp;
12.     //myPrevValues = tmp;
13.     // check array loaded properly
14.     Debug.Log(mySliders.length);
15. }
16.  
17. function OnGUI () {
18.     var j : int = 0;
19.     for (var ary : int in mySliders) {
20.         //myPrevValues[j] = mySliders[j];
21.         var k : int = 15 * j;
22.         mySliders[j] = GUI.HorizontalSlider ( Rect ( 20, 20+k, 100, 10 ), mySliders[j], 0, 10);
23.         // check for change
24.         if (GUI.changed) {
25.             Debug.Log ("'"+j+"' changed");
26.             GUI.changed = false;   // reset the value, so we can detect the next one
27.         }
28.         //if (mySliders[j] != myPrevValues[j]) {
29.         //  Debug.Log("slider '" + j + "' has changed!");
30.         //}
31.         j++;
32.     }
33. }

[edited] I stand corrected again! I've fixed the code above to use GUI.changed properly! When I tried it last night I overlooked resetting it to false after checking it! So simple.

Cheers.

ps. i love this new gui system! it's kick arse powerful and fast! :wink:

 

That's cool, I'll go for the "compare old and new values" solution then.

Thanks thylaxene

 

You can check GUI.changed after each slider

Code (csharp):

1.  
2. myVar = GUILayout.Slider (myVar, 0, 1);
3. if (GUI.changed) {
4.     Debug.Log ("myVar changed");
5.     GUI.changed = false;   // reset the value, so we can detect the next one
6. }
7.    
8. myOtherVar = GUILayout.Slider (myOtherVar, 0, 1);
9. if (GUI.changed) {
10.     Debug.Log ("myOtherVar changed");
11.     GUI.changed = false;   // reset the value, so we can detect the next one
12. }
13.  

Or you can just use a for loop

 

Ha! Now we are getting somewhere. Great Nicholas!

=D