Do-While Loop not working

Question

I am using the While loop in the Start method. The code is as following:

     for (int i = 0; i < instPointsLength; i++)
     {
         int ranObj = Random.Range(0, ListLength);

         do
         {
             ranObj = Random.Range(0, ListLength);
             Debug.Log(ranObj);                
         }
         while (usedLocation.Contains(streetList[ranObj]) == true);

         instPointsList[i].transform.position = streetList[ranObj].transform.position;
         usedLocation.Add(streetList[ranObj]);
     }

Can anyone please help me out, why Unity is freezing, maybe because it becomes an Infinity Loop, but I can't find it out how? Because the list is empty for the first FOR loop iteration, the while loop will get a false and break, and similarly, for further iterations, it should break. Am I missing something, please let me know? Thanks a lot in advance.

Answer 1

Answer by Perrorist · Nov 08, 2021 at 11:17 PM

If those last two statements are supposed to be in a While loop, shouldn't they be enclosed within {}?

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Hellium · Nov 08, 2021 at 11:46 PM 0

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It's a do...while loop, not a while one.

Perrorist · Nov 08, 2021 at 11:49 PM 0

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I need my eyes testing.

TSR_Rajput Perrorist · Nov 09, 2021 at 06:46 AM 0

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It's okay, let me know if you find the issue. thanks for answering.

Perrorist · Nov 09, 2021 at 07:43 AM 0

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Did the Debug get executed?

TSR_Rajput Perrorist · Nov 09, 2021 at 07:50 AM 0

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Unity is freezing completely, so nothing works, no debugs

Perrorist · Nov 09, 2021 at 09:10 AM 0

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Have you considered adding a Debug before the For loop for InstPointsLength? Or are you saying Unity freezes before it even gets that far? Does commenting out the entire statement allow Unity to continue? (I'm just trying to get a proper understanding of the problem.)

TSR_Rajput Perrorist · Nov 09, 2021 at 09:17 AM 0

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Unity freezes after pressing the Play button, it completely freezes before executing anything. And commenting that makes everything work properly.

Perrorist · Nov 09, 2021 at 10:48 PM 0

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The question must be, is it the code itself or the inclusion of a section of code. I'm still new to Unity, so I don't have the knowledge or experience to understand why Unity is freezing, but I do have many years of program$$anonymous$$g under my belt. My approach would first be to replace the code with something innocuous, like a few statements that don't affect the program. If that works, I'd then reconsider the original code and attempt to achieve the same outcome with a different formulation, i.e. by replacing the Do...While with other constructs. It's worth a try.

Do-While Loop not working

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