Question IndexOutOfRangeException: Index was outside the bounds of the Array

Hi at all,
i am trying to spawn an array, but it gives me this error:
"Index was outside the bounds of the array", and indicates the Function: "InstantiateFormation ()".
I've seen a bit around, and tried putting ".Length" to the "axisX", and "axisZ" variables in the For cicles, but don't work, and it gives me another error.
How can I do?
Please ...

 

Checking the obvious maybe, but is your formation array empty? Maybe you forgot to add the GameController tag to your objects.

Deleted my previous answer as it was incorrect, sorry!

 

IndexOutOfRange is a common error. It means you're outside the size of your collection (in this case, your array). You should be adding debug statements to check for size and content to make sure you have the values you expect. My guess is your array is empty, so a random.range is going to return a value that isn't within your array's size. If your array is empty, you shouldn't try to instantiate from it. (Note, it's a good idea to add this check and handle it even when you do expect values to be in your array)

 

Hi! thanks for your help,
My Array, as you can see, is full of 4 capsules that will be arranged randomly: 8 on the X axis and 10 on the Z axis.
If I fill the array with Capsules from the Hierarchy, Unity crashes (I think due to an infinite loop).
If, on the other hand, I put the Capsule prefabs in the array it gives me this error.
What can it be? I do not understand

 

Brathnann, you are right, when I press play, suddenly the Array empties

 

That means your call in Start is overwriting your array. You don't need that call if you are dragging and dropping in the inspector. As @mopthrow mentioned, if you have nothing in your scene with the tag GameController, the call finds nothing and you'll have an empty array.

Since you are looping and using Instantiate to create random items, my guess is you are just trying to clone prefabs. Prefabs don't exist in the scene by default, which means calls to find them in the scene don't work, even if they have the proper tag on them.

Comment out the formation = call and you should be fine since you added them by the inspector.

 

Here are some notes on IndexOutOfRangeException and ArgumentOutOfRangeException:

http://plbm.com/?p=236