random

Game1 needed - Version1 needed

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Description

Description:

Description needed

Groups:

Math

Syntax 1

Syntax:

Syntax needed

Parameters:

x: Number

Return Value:

Return value needed

Syntax 2

Syntax:

random [min, mid, max] Template:Since

Parameters:

[min, mid, max]: Array

min: Number

mid: Number

max: Number

Return Value:

Number

Syntax 3

Syntax:

seed random x Template:Since

Parameters:

seed: Number

x: Number

Return Value:

Number - value from 0 to x

Syntax 4

Syntax:

seed random [x, y] Template:Since

Parameters:

seed: Number

[x, y]: Array position on the Perlin noise texture

x: Number

y: Number

Return Value:

Number - value from 0 to 1

Examples

Example 1:

_rNumber = random 1;

Example 2:

_rNumber = random -10;

Example 3:

Generate a random position inside a circle (see also Example Code: Random Area Distribution) _center getPos [_radius * sqrt random 1, random 360];

Example 4:

To select random value from an array: _array = ["apples", "pears", "bananas", "M16"]; _random = _array select floor random count _array; // Template:Since _random = selectRandom _array;

Additional Information

See also:

selectRandomselectRandomWeighted

Notes

Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord or on the Forums.
Only post proven facts here! Add Note

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)

Posted on July 22, 2018 - 12:58 (UTC+2)

Lou Montana

Repartition comparison

Formula	0	1	2	3	4	5	6	7	8	9
floor random 10;	10%	10%	10%	10%	10%	10%	10%	10%	10%	10%
floor random [0, 5, 10]	0%	2%	7%	17%	25%	25%	17%	7%	2%	0%
floor random [0, 10, 0]	0%	0%	1%	2%	5%	9%	14%	19%	24%	26%
floor random [0, 10, 5]	0%	0%	0%	1%	2%	5%	9%	16%	28%	38%