How to get first depth child components of a parent object?

Question

Hi to all.

If i have an gameobject that has more than one child gameobjects and each of it's child also have their child.Is it possible or is any way to get transform component of all first level child ? like below diagram where each of child repeat it's parent structure and i want access transform of child 1 until child n:

gameobject

child 1

child 2

.

child n

Answer 1

Best Answer

Answer by s_guy · Jul 18, 2013 at 12:19 AM

A brute force way would be to iterate all of a transform's children. For each child, check to see if the the child's transform.parent is the same as the transform you started with. If it is, then it's a first level child.

You could set up a loop or recursive check for each child until the above match is made and count each recurrence to see how far you had to go.

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bigbat · Jul 18, 2013 at 08:28 AM 0

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Yes i had already thought of that,but i.e. in a complex model with very much child objects(In my current case it really is complex object,a player model with many child)whether it does not affect performance?

bigbat · Jul 18, 2013 at 10:10 AM 0

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I figure out my problem with a different solution.indeed i'm working on an inventory system like that in "risen" game,and this question was about equiping and unequiping an item to a player body part.

But since i think there isn't no better answer for my primary question,so i mark this answer as correct,because it works.

Answer 2

Answer by sathya_m · Oct 09, 2013 at 09:02 AM

in C#

If you are looking for only first depth of Gameobject childs

foreach(Transform trans in object.transform)

     {
              Debug.Log("child"+ trans.name);
     }

//////////////////////////////////////

if you want to read child form all depth of hierarchy

Transform[] transforms = Object.GetComponentsInChildren();

     foreach(Transform trans in transforms)
     {
              Debug.Log("child"+ trans.name);
     }

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Miscellaneous · Nov 26, 2013 at 03:23 AM 0

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This is the best solution, thanks.

huulong · Sep 16, 2014 at 02:07 PM 0

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Thanks, I was wondering whether I was getting deeper children by mistake with the 1st formula but actually it was not the case. I guess object.GetComponentsInChildren also returns the component T of object, so you would also get the transform of the said object with the second formula.

tylerwongj · Jun 25, 2019 at 01:05 AM 0

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Why does foreach(Transform trans in gameObject.transform) {} result in getting the first-depth?

Nameelee · Mar 31 at 09:16 AM 0

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Wow. That's brilliant. Thank you.

Answer 3

Answer by vexe · May 05, 2015 at 05:18 AM

In case someone wants to get depth values in a gameObject hierarchy:

 void LogDepth(Transform root, int depth)
 {
     var children = root.GetComponentsInChildren<Transform>();
     foreach(var c in children)
     {
         if (c.parent == root)
         {
             print(c + ": " + (depth + 1));
             LogDepth(c, depth + 1);
         }
     }
 }

eg: consider the following hierarchy:

 root
 -- A
 ---- B
 ------ C1
 ------ C2

root is at depth 0, A is at 1, B is at 2 while C1 and C2 at depth 3

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Answer 4

Answer by Kerihobo · Jan 24, 2017 at 09:25 AM

Sorry, I know this is old, but can you simply say

 foreach (Transform t in someTransform) {
     if (t.parent == someTransform) {
         Debug.Log(t);
     }
 }

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Answer 5

Answer by V-Jankaitis · Oct 11, 2017 at 01:55 PM

 public static Transform[] GetTopLevelChildren(Transform Parent)
 {
     Transform[] Children = new Transform[Parent.childCount];

     for (int ID = 0; ID < Parent.childCount; ID++)
     {
         Children[ID] = Parent.GetChild(ID);
     }

     return Children;
 }

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How to get first depth child components of a parent object?

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