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Question by ProjectCryken · Mar 27, 2013 at 07:54 PM · arraysort

Sorting GameObjects In An Array Alphabetically

Can somebody explain to me how the compare in .Sort() works? For example ordering gameObjects by name?

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Answer by whydoidoit · Mar 27, 2013 at 08:21 PM

You need to supply a function to provide the comparison - turns out the Unity Script syntax is a bit strange and you have to pass in the array to its own sort function. It looks like this:

        objs.Sort(objs, function(g1,g2) String.Compare(g1.name, g2.name));

The function provided must take 2 game objects and:

  • Return 0 if they are the same

  • Return -1 if g2 is greater than g1

  • Return 1 if g2 is less that g1

String.Compare will automatically do that for strings.

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avatar image whydoidoit · Mar 27, 2013 at 08:22 PM 1
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Have you just given up on http://answers.unity3d.com/questions/425378/creating-a-basic-path-for-enemies.html? I spent quite a while building you a package that did what you wanted and attached it to the answer.

avatar image ProjectCryken · Mar 27, 2013 at 08:34 PM 0
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No, I am simply modifying it slightly to suit my purposes. I thank you loads for all the help you have done to introduce someone new to Unity like me, without I would have taken hours and hours to work through all the dodgy documentation . Thanks!

avatar image whydoidoit · Mar 27, 2013 at 08:38 PM 1
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No that's ok - I was worried it wasn't working and you were heading back for something else to try to fix it. Given that UA is a knowledge base we like to try to nail down things that aren't working rather than leave them hanging.

avatar image whydoidoit · Mar 27, 2013 at 08:52 PM 1
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Yeah I had that but the final syntax I posted fixed it (I don't think UnityScript is playing fair here!)

$$anonymous$$y complete script, compiles and runs for me:

 #pragma strict
 import System;
 import System.Collections.Generic;
 
 
 
 
 var objs : GameObject[];
 
 function Start()
 {
 
      objs.Sort(objs, function(g1,g2) String.Compare(g1.name, g2.name));
      for(var o in objs)
          Debug.Log(o.name);
      
 }
avatar image whydoidoit · Mar 28, 2013 at 08:16 AM 1
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Yeah it's weird isn't it makes me feel wrong, but writing a full function with return makes it slightly harder to read!

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