int array overflow exception

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Hey guys, simple issue here although I don't understand where its coming from. I make an int array for a procedural mesh but when creating the array it throws me an overflow exception. the code :

 int MeshLength = Points.Count;
         
         int[] Triangles = new int[(MeshLength * 3) + ((MeshLength - 1) * 12)];

MeshLength has a maximum value of 99 and a minimum value of 1. Therefore, the maximum index of this array is 1473 ( 99*3 = 297, 98*12 = 1176, 1176 + 297 = 1473 ).

At the beginning I thought the error came from MeshLength int sometimes being 0, but since then fixed that and it didn't get rid of the error. Contextual code does not influence this array.

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Answer by alireza97 · Sep 16, 2019 at 08:03 AM

I think you might fixed 'MeshLength ' in the wrong place because when I fixed it in Awake or make it Serializable and fixed it in my editor it works.

this is when Points size is 0:

alt text .

and when I fixed it in my editor :

alt text

error.png (24.2 kB)

fixederror.png (28.3 kB)

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Fantilyre · Sep 16, 2019 at 09:13 AM 0

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Yep, actually my Points list was shared by two different objects and I Clear() it on one of the objects, making it empty on the other as well, thus giving a 0 index for $$anonymous$$eshLength. Thanks for confirming it was a problem with 0.

int array overflow exception

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