How to resize c# array of gameobjects&

Question

I have scripts using "c# array", so replacing evrything to "c# list" will be a headache. Help with code

 ------
 if(MyUnits[MyUnits.length] != null){
 Resize(MyUnits, (MyUnits.length) + 10);
 }
 ------
 public void Resize(GameObjectsArray, NewSize){
 
 ///WHAT GOES HERE????
 
 }

Answer 1

Best Answer

Answer by Adamcbrz · Mar 16, 2014 at 03:15 PM

The list is you best option but to answer you question you will have to create a second array.

1) Create new array with new size.

2) Loop through old array and add each elements to new array.

3) set old array = to new array

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Adamcbrz · Mar 20, 2014 at 07:07 PM 0

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$$anonymous$$odifying your code here is the results

 public void GroupResize (int Size, ref GameObject[] Group)
 {
         
     GameObject[] temp = new GameObject[Size];
     for (int c = 1; c < $$anonymous$$athf.$$anonymous$$in(Size, Group.Length); c++ ) {
         temp [c] = Group [c];
     }
     Group = temp;
 }
         
 void Start ()
 {
     GameObject[] Test = new GameObject[5];
     Debug.Log (Test.Length);
     GroupResize (15, ref Test);
     Debug.Log (Test.Length);
 }

tatarinrafa · Mar 22, 2014 at 07:52 AM 0

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that works! Finaly a clear answer))

Je Hwan Yoo · Jan 25, 2016 at 03:49 AM 0

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Good! It's the best Algorithm of resize in unity! Thank you, so much.

Bunny83 Je Hwan Yoo · Jan 25, 2016 at 07:19 AM 0

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Uhm, System.Array.Resize does exactly this but probably a bit more efficient ^^. Also watch out, it seems there's a typo in the script because "c" should start at "0" and not "1". Otherwise you're skipping the first element.

Answer 2

Answer by Chronos-L · Mar 17, 2014 at 06:04 PM

Use Array.Resize( ref myArray, newSize)

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tatarinrafa · Mar 22, 2014 at 07:53 AM 0

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"ref" made it to work. Thank You!=)

Mentaner · Oct 31, 2015 at 12:53 PM 0

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Exactly what I was looking for! Thank you!

Hamed_Kh · Dec 29, 2017 at 01:28 PM 0

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what about 2d or 3d array ?

Bunny83 Hamed_Kh · Dec 29, 2017 at 02:30 PM 0

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Array.Resize doesn't actually resize an array as arrays have a constant size once created. The Resize helper method just creates a new array with the specified size and copies the elements from the old array into the new array.

When dealing with multidimensional arrays you have to do those steps your self.

DavidSof · Jun 04, 2021 at 01:41 PM 0

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To use Array.Resize you must include of using System with it , and if you use Random function inyour code you must now to add Unity.Random to it

How to resize c# array of gameobjects&

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