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Aaron Levy
Medicated Lately?
Join date: 3 Jun 2004
Posts: 2,147
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07-25-2004 14:40
How do I go about getting a random number that can be -5 to +5?
The way I'm doing now is not effecient and I know there's another way, I just can't figure it out or find it. What I'm doing now is getting a random number between 1 and 5, then getting another random 50/50 result to decide if it's negative or positive. If the 50/50 result comes back as "1" then the number will be negative and I then subtract the number x2 from itself to get it's negative value.
Is there a way to just tell LSL "I want a number between -X and X" and then it gives it to you? Also, these are all floats, if that makes any difference.
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Pete Fats
Geek
Join date: 18 Apr 2003
Posts: 648
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07-25-2004 14:45
float random = llFrand(10) - 5;
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Aaron Levy
Medicated Lately?
Join date: 3 Jun 2004
Posts: 2,147
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07-25-2004 14:46
OMG that was simple. Thanks Pete. Sometimes I don't think logically, and that was perfectly logical!
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Aaron Levy
Medicated Lately?
Join date: 3 Jun 2004
Posts: 2,147
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07-25-2004 14:51
Except it's giving me a syntax error right before the -5 part.
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Grim Lupis
Dark Wolf
Join date: 11 Jul 2003
Posts: 762
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07-25-2004 15:03
From: someone Originally posted by Aaron Levy
Except it's giving me a syntax error right before the -5 part. Post your code, Aaron. We can't help you debug without seeing the code.
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"God only made a few perfect heads, the rest of them he put hair on." -- Unknown
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Malachi Petunia
Gentle Miscreant
Join date: 21 Sep 2003
Posts: 3,414
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07-25-2004 15:08
There is a bug in the parser that binds (-5) as a unary constant and so you wind up with <exp> <exp>; which is a syntax error. Please note the space in Pete's reply "llFrand(10) - 5" where there is a space preceeding the 5.
Hope this is what the problem was.
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Aaron Levy
Medicated Lately?
Join date: 3 Jun 2004
Posts: 2,147
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07-25-2004 15:10
Yep, it was the space!  |
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Strife Onizuka
Moonchild
Join date: 3 Mar 2004
Posts: 5,887
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07-25-2004 23:36
llFrand will take negative numbers as well.
-5 <= llFrand(-5) <= 0
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- James Nachtwey
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Wednesday Grimm
Ex Libris
Join date: 9 Jan 2003
Posts: 934
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07-26-2004 07:18
The general forumla to get a random number between x and y is
llFrand(y - x) + x;
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