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Question by calmcarrots · Jun 17, 2014 at 11:56 PM · listrangenodeoutpathfind

Argument Out of Range On a List

Hi, I am making my own pathfinding solution to fit my game and so far it works but I just added a new function in my code and my List is not being properly adjusted. Here is the code:

 void findPathOfSplitNodes() 
     {
         splitNodesPath = new List<List<GameObject>>();
 
         //We find the path starting at each split node and then save that path in a list
         for(int i = 0; i < allSplitNodes.Count; i++)
         {
             splitNodesPath[i] = new List<GameObject>();
             splitNodesPath.Add(goThroughPath(allSplitNodes[0]));
         }
     }

The problem is with splitNodesPath[i] = goThroughPath(allSplitNodes[i]);

Thanks for the help!

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Answer by Kiwasi · Jun 18, 2014 at 12:22 AM

It doesn't look like you have given splitNodesPath a size. Does changing line 8 to the following still cause and error?

 splitNodesPath[i] = new List<GameObject>();

If so try changing your code to

 splitNodesPath.Add(goThroughPath(allSplitNodes[i]));

 

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avatar image calmcarrots · Jun 18, 2014 at 12:36 AM 0
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I updated my code to fit yours.... still does not work.

avatar image Kiwasi · Jun 18, 2014 at 01:36 AM 0
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What exactly di you change to?

avatar image calmcarrots · Jun 18, 2014 at 01:54 AM 0
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I updated my code. It still does not work.

avatar image Kiwasi · Jun 18, 2014 at 02:15 AM 0
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Remove line 8 that was a test to see where the error was.

If using new causes an error then replace with the add line.

Here is the code I intended you write in my answer

 void findPathOfSplitNodes() 
     {
         splitNodesPath = new List<List<GameObject>>();
          //We find the path starting at each split node and then save that path in a list
         for(int i = 0; i < allSplitNodes.Count; i++)
         {
             splitNodesPath.Add(goThroughPath(allSplitNodes[i]));
         }
     }

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Answer by RudinUnity · Jun 18, 2014 at 02:06 AM

Hi, I have a question. Why did you initiate i-th entry of splitNodesPath in the for loop again? You have initiated splitNodesPath before the for loop. Maybe you can delete

 splitNodesPath[i] = new List<GameObject>();

Probably your goThroughPath(allSplitNodes[i]) is add to the (i+1)-th entry? Or you can check i-th entry of splitNodesPath with Debug.Log to print it.

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