Difference between revisions of "random"

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(format)
(example)
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|x3= To select random value from an array:
 
|x3= To select random value from an array:
 
<code>_array = ["apples", "pears", "bananas", "M16"];
 
<code>_array = ["apples", "pears", "bananas", "M16"];
_random = _array [[select]] [[floor]] [[random]] [[count]] _array;</code>  |= Example 3
+
_random = _array [[select]] [[floor]] [[random]] [[count]] _array;
 +
// or since Arma 3 v1.55.133393
 +
_random = [[selectRandom]] _array;</code>  |= Example 3
  
 
|x4= Compare (each command was executed 100000 times to gather statistics):<code>[[floor]] [[random]] 10;
 
|x4= Compare (each command was executed 100000 times to gather statistics):<code>[[floor]] [[random]] 10;

Revision as of 01:35, 17 November 2015

Template:Command

Notes

Posted on July 12, 2015 - 20:32 (UTC)
Hcpookie
Random selections including negative numbers can be obtained via: _Xrnd = round(random 200) -100; This will yield numbers between -100 and 100.
  • Be careful using random numbers in multiplayer, each client will come up with a different result. See multiplayer tutorials for more general information about locality.
  • The number returned is unlikely to be a whole number.
    To return a whole number use either round, ceil or floor together with random:
x=round(random 5) will return 0,1,2,3,4 or 5. (non-uniform distribution, 0 and 5 are half as likely to be selected than any of the other numbers)
x=floor(random 5) will return 0,1,2,3 or 4. (uniform distribution, all numbers have the same probability of being selected)
x=ceil(random 5) will return 0,1,2,3,4 or 5. (0 is very unlikely, but possible, as ceil 0 is 0)