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Question by Muzz 1 · Apr 24, 2011 at 08:23 PM · javascriptrandomrange

Random.Range statement question

I'm trying to select a random number from 1 - 4. Here's my script - what's wrong with it? It only gives numbers from 1-3.

var ground : GameObject; var numberOfBuildings : int = 20; var numberOfRows : int = 5; var building1 : GameObject; var building2 : GameObject; var building3 : GameObject; var building4 : GameObject; var position = Vector3 (10,0,10); var buildingType = 4; var zchange = 10; var nothing : GameObject;

function Start (){

var newObj = Instantiate (ground, Vector3(0,-0.1,0), transform.rotation); newObj.transform.localScale.z = numberOfBuildings*20; newObj.transform.localScale.x = numberOfRows*40;

}

function Update () { if (numberOfBuildings > 0) {

buildingType = Random.Range (1,4);

print (buildingType);

switch (buildingType) { case (1) : Instantiate (building1, position, transform.rotation); position += Vector3 (0,0,zchange); numberOfBuildings--; break;

case (2) : Instantiate (building2, position, transform.rotation); position += Vector3 (0,0,zchange); numberOfBuildings--; break;

case (3) : Instantiate (building3, position, transform.rotation); position += Vector3 (0,0,zchange); numberOfBuildings--; break;

case (4) : Instantiate (building4, position, transform.rotation); position += Vector3 (0,0,zchange); numberOfBuildings--; break;

} } }

Thanks!

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avatar image burgunfaust · Apr 25, 2011 at 01:03 AM 0
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When you get this finished I'd like to see it $$anonymous$$uzz. It looks interesting.

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Answer by Justin Warner · Apr 24, 2011 at 08:28 PM

static function Range (min : int, max : int) : int Description

Returns a random integer number between min [inclusive] and max [exclusive] (Read Only).

If max equals min, min will be returned. The returned value will never be max unless min equals max.

Make it:

 Random.Range(1,5);

http://unity3d.com/support/documentation/ScriptReference/Random.Range.html

Exclusive means it doesn't read that one...

Think of in Java like doing a substring function... If you know that...

But yea, this'll work =).

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avatar image Muzz 1 · Apr 24, 2011 at 08:42 PM 0
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That's just so messed up...

avatar image Justin Warner · Apr 24, 2011 at 08:43 PM 0
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Yea... I think it's funny that if you use floats ins$$anonymous$$d of an int, it is inclusive inclusive... So then the second number IS included... Haha.

avatar image Muzz 1 · Apr 24, 2011 at 08:43 PM 0
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Also, when I used (1,3), it gave me those 3 values. I will never get scripting.

avatar image Justin Warner · Apr 24, 2011 at 09:28 PM 0
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Hmm, that's very strange... It might be a small glitch, never know...

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