Is it possible to choose a random case (Switch)

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Hey guys, I'm wondering if it's possible to choose a case randomly.

Like right now I have a drop down menu to select which cases I want. I want to add a button or something to randomize the cases. Kinda like a character creator with a randomize button.

Thanks!

Answer 1

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Answer by Bonfire-Boy · Feb 07, 2015 at 09:45 PM

You need to randomise the switch variable first.

Setting a random case of an Enum is a bit more complicated than an int. You need something like

 System.Array enumValues = System.Enum.GetValues(typeof(YourEnum));
 YourEnum randomEnum = (YourEnum)enumValues.GetValue(UnityEngine.Random.Range(0,enumValues.Length));
 switch (randomEnum)
 {
 }

Line 1 gives you an Array containing one of each of the values of your 'YourEnum' Enum.

Line 2 randomly picks an element of that array.

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Hathakas · Feb 08, 2015 at 02:01 AM 0

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Thanks Again!

hms0589 · Oct 25, 2020 at 09:16 AM 0

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for add, you have to insert this code into awake() or start()

Bonfire-Boy hms0589 · Oct 25, 2020 at 04:25 PM 1

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No, you don't.

The code I've shown will pick a random enum and then perform a switch over it, which is what was asked for.

You might want to do that in Awake() or Start(), if you're using it to initialise something.

But there are many other times one might want to randomise something including in response to a request to do it (which is what the OP actually asked for).

Answer 2

Answer by Mmmpies · Feb 07, 2015 at 09:25 PM

Yep Random.Range can return an int (or float) just set it to start from the start range to an end range.

It works slightly differently for Int and Float. with Float the upper range is inclusive, with Int it's exclusive.

So if you have 4 options you want to use randomly use this:

 int MyRandom = Random.Range (1, 5); // between 1 and 4

but floats are inclusive so 1 to 5 would work for all floats.

for what you want I think int Random.Range(1, X); will work where X is the upper value.

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Hathakas · Feb 07, 2015 at 09:39 PM 0

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Sorry I'm quite new to program$$anonymous$$g, so that answers the Random generator part. How would I go about making the switch statement be affected by the $$anonymous$$yRandom number?

Hathakas · Feb 07, 2015 at 10:11 PM 0

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Ok that definitely looks complicated for me. I take it I need to declare an Array before this code? When I insert it anywhere in my script, the Array is red, kinda like when it can't find the ref to a variable.

Bonfire-Boy · Feb 07, 2015 at 10:22 PM 1

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Sorry, my bad, I left some pseudo in there. Have fixed it now. Array should have been YourEnum[] (an array of your enums). The GetValues function sets it so that it contains one of each possible value of that enum, and then a random case is picked from that array.

Bonfire-Boy · Feb 07, 2015 at 10:39 PM 1

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$$anonymous$$y double bad, I think you just didn't have the System namespace loaded. Have fixed it again adding in explicit namespaces.

Hathakas · Feb 07, 2015 at 10:39 PM 0

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Haha, that's a relief! Ok so I put my enum in the but now the Enum.GetValues is red. everything else seems ok. I put all of them in Start() for now should I not have done that?

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Is it possible to choose a random case (Switch)

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