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Question by ProfMonkey07 · Jul 23, 2020 at 06:54 PM · bugairandom

random.range not working

in my project im making a wandering AI, it rotates a random amount with this transform.Rotate (0, 0, Random.Range(-2, 2)); however it always rotates negative unless I make the max range 3 or more, how can I fix it so each number has an equal chance of working?

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Answer by unity_ek98vnTRplGj8Q · Jul 23, 2020 at 07:39 PM

https://docs.unity3d.com/ScriptReference/Random.Range.html


You are using the integer version of Random.Range which is inclusive on the lower bound and exclusive on the upper bound, meaning Random.Range(-2, 2) has a possibility of selecting -2, -1, 0, or 1 with equal probability. If you change the upper range to 3, then Random.Range(-2, 3) has a possibility of selecting -2, -1, 0, 1, or 2, which is what you want.


Alternatively, if you don't want it to select only whole numbers and rather have it use any value between -2 and 2, you could use the float version of Random.Range by calling Random.Range(-2f, 2f)

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