Graal Forums - Choosing Random Values

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Emera

10-26-2011 05:27 PM

Choosing Random Values

I am trying to make a system, just for testing purposes that picks out a random number or word from an array and echo it.
Example;

PHP Code:


		
			
//#CLIENTSIDE
function onCreated() {
  //Define array
  this.array = {"One", "Two", "Three", "For"};
}

function onWeaponFired() {
  //Do stuff here
  echo(result);
}

I want it to randomly select either of the values in the array, and echo the result. Any ideas?

fowlplay4

10-26-2011 05:31 PM

If your array is guaranteed to have more than 1 element:

echo(randomstring(this.array));

will do exactly what you want to. You can also do:

temp.result = this.array[int(random(0, this.array.size()))];

Emera

10-26-2011 06:36 PM

Quote:

Originally Posted by fowlplay4 (Post 1671885)

Thank you very much :D

cbk1994

10-26-2011 09:59 PM

I would avoid randomstring entirely, it's only going to lead to problems in the future when somebody changes your script so that it's not guaranteed to have at least two elements.

Emera

10-26-2011 10:46 PM

So using;

NPC Code:

temp.result = this.array[int(random(0, this.array.size()))];

Is my best bet? Can you explain this to me in further detail please? What does the [int(random(0,this.array.size()))]; bit mean?

fowlplay4

10-26-2011 10:52 PM

int(value) - Converts the value to an integer (rounded). I.e: int(2.5) - returns 2
random(a, b) - Returns a random value between a and b. It'll never equal b though.
array[i] - The element in the array.

It basically generates a valid random index in the array.

PHP Code:


		
			
temp.ind = int(random(0, this.array.size()));

temp.result = this.array[temp.ind];

Emera

10-26-2011 10:54 PM

Quote:

Originally Posted by fowlplay4 (Post 1671921)

PHP Code:


		
			
temp.ind = int(random(0, this.array.size()));

temp.result = this.array[temp.ind];

Ah ok. Thank you :D

xXziroXx

10-27-2011 12:39 AM

Quote:

Originally Posted by cbk1994 (Post 1671915)

I would avoid randomstring entirely, it's only going to lead to problems in the future when somebody changes your script so that it's not guaranteed to have at least two elements.

Uh, what?

fowlplay4

10-27-2011 01:41 AM

Quote:

Originally Posted by xXziroXx (Post 1671930)

Uh, what?

Try running this a 10 or 20 times:

PHP Code:


		
			
function onCreated() {

  temp.a = {"a"};

  echo(randomstring(temp.a));

}

Should echo "a" every time but it doesn't.

xXziroXx

10-27-2011 02:37 AM

Quote:

Originally Posted by fowlplay4 (Post 1671935)

Try running this a 10 or 20 times:

PHP Code:


		
			
function onCreated() {
  temp.a = {"a"};
  echo(randomstring(temp.a));
}

Should echo "a" every time but it doesn't.

What the hell!? That's shady.

Admins

11-04-2011 07:42 PM

Ok will fix that behaviour of randomstring(), it was originally not made for getting arrays as input.

fowlplay4

11-04-2011 07:52 PM

Quote:

Originally Posted by Stefan (Post 1673119)

Ok will fix that behaviour of randomstring(), it was originally not made for getting arrays as input.

Can you add a random() to TGraalVar (or whatever the main class is) so we can retrieve random elements or characters from arrays and strings. I.e:

"abcdefg".random() - can return "a" or "b" or etc.
{1,2,3,4}.random() - can return 1, 2, or etc.

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