koobas.hobune.stream
How to sort a list of gameobjects by their name?
Hey all.
As the subject states, I have a simple list of type GameObject, and I'd like to sort the list based on the gameobject's names in there. Actually all of those gameobject names have a prefix of a number and underscore (eg: 23_***).
I couldnt get my head about how its done quickly.
Thanks :-)
Have you tried the Sort method for the generic list?
just call it like this:
yourList.Sort();
This might not work and you might need to use something a bit more complex (that's why i'm not posting this as an answer) but it's worth trying
Hey thanks for comment. I did some "tests" but my biggest issue at sorting this list out, is that I need to sort them based on the numerical prefix the names have.
You can use Linq by adding
CS:
using Linq;
JS:
import Linq;
Then all you need to do is:
CS
var sortedList = unsortedList.OrderBy(go=>go.name).ToList();
JS
var sortedList = unsortedList.OrderBy(function(go) go.name).ToList();
Hi and thanks. Is there any trick that I can do so that the list is not sorted like: 1,10,11,12,2,3,4 etc?, but rather in order. As stated in my post, the names have a prefix in them. Thanks.
Ok never$$anonymous$$g. I got it working. The truth is that each element was of a custom class, that each one was assigned to a GameObject. So I did ..OrderBy(function(foo) foo.orderInt).ToList(); I am marking this as the correct answer since is what I used at the end. Thanks everyone :-)
Hey sorry I missed your comments - I wrote an article on Linq in Unity on Unity Gems
Thank you so much, this is definitely the way to go. I only wanted one list though so all I did was this in C# public list $$anonymous$$yList; foreach(element E in GetComponentsInChildren()) { $$anonymous$$yList.Add(E); } $$anonymous$$yList = $$anonymous$$yList.OrderBy(go=>go.name).ToList();
BTW You could actually do:
$$anonymous$$yList = GetComponentsInChildren<Whatever>().OrderBy(go=>go.name).ToList();
You will want to make a comparison which can be seen from MSDN documentation Here Since there is already a comparison for strings yours needs onlyntoncall that like such:
private static int SortByName(GameObject o1, GameObject o2) {
return o1.name.CompareTo(o2.name);
}
// later on...
myObjects.Sort(SortByName); // sorted by name now
I tried this and I dont know if its something I didnt understand or the fact that Im under UnityScript rather than C#, allthough I think the same should work. Obviously, The line: myObjects.Sort(SortByName); expects the "SortByName" to be provided by the arguments it requires (o1, o2). I dont really understand what I am supposed to do :/ Thanks
Unityscript is:
static function SortByName (o1 : GameObject, o2 : GameObject) {
return o1.name.CompareTo (o2.name);
}
It's used in the same way, namely "myObjects.Sort(SortByName);".
Maybe something like this will help.
note: The GameObject after List needs to be wrapped in angle brackets.
List GameObject unsortedObjects; //<-- your objects
List GameObject sortedObjects = new List GameObject();
bool added = false;
//Iterate over all objects in the unsorted
for(int i = 0; i < unsortedObjects.Count; i++)
{
added = false;
//Iterate over the objects in sorted for comparison.
for (int j = 0; j < sortedObjects.Count; j++)
{
//The condition, in this case, name being less then
if (unsortedObjects[i].name.CompareTo(sortedObjects[j].name) < 0)
{
//Insert the object into list at point. Placing it before.
sortedObjects.Insert(j, unsortedObjects[i]);
added = true;
break;
}
}
//Add to back of list
if(!added)
sortedObjects.Add(unsortedObjects[i]);
}
//if you want it as an array
GameObject[] sortedObjectsArray = sortedObjects.ToArray();
I don't know how the Sort() works that Yokimato has mentioned but this method should be quite fast regardless.
Thanks for answer. I will just go with the Linq version as being quite shorter and I like it short :-)
by default the .Sort() function sorts the objects by instance ID so unless you created them in your scene in the proper order when they were initially
