Example Code: Random Area Distribution: Difference between revisions

From Bohemia Interactive Community
Jump to navigation Jump to search
m (Fix)
m (Text replacement - "\[ *(https?:\/\/[^ = ]+) +([^= ]+) *\]" to "{{Link|$1|$2}}")
Line 1: Line 1:
__NOTOC__
__NOTOC__
[[File:ExampleCode RandomDiscDistribution.png|thumb|From left to right:<ol><li>random radius<li>random position in a circle<li>Gaussian normal distribution</ol>]]
[[File:ExampleCode RandomDiscDistribution.png|thumb|From left to right:<ol><li>random radius<li>random position in a circle<li>Gaussian normal distribution</ol>]]
Originally from [[User:Commy2|Commy2]]'s [https://armaworld.de/index.php?thread/3796-zuf%C3%A4llige-position-erzeugen/ forum post], also fully translated on [[User:Dedmen|Dedmen]]'s [https://sqf.ovh/sqf%20math/2018/05/05/generate-a-random-position.html sqf.ovh post].
Originally from [[User:Commy2|Commy2]]'s {{Link|https://armaworld.de/index.php?thread/3796-zuf%C3%A4llige-position-erzeugen/|forum post}}, also fully translated on [[User:Dedmen|Dedmen]]'s {{Link|https://sqf.ovh/sqf%20math/2018/05/05/generate-a-random-position.html|sqf.ovh post}}.





Revision as of 15:09, 28 April 2023

From left to right:
  1. random radius
  2. random position in a circle
  3. Gaussian normal distribution

Originally from Commy2's forum post, also fully translated on Dedmen's sqf.ovh post.


Arma 3

  • _object getPos [_distance, _direction] has been introduced in Arma 3 logo black.png1.56
  • Gaussian random [_min, _mid, _max] has been introduced in Arma 3 logo black.png1.56

private _center = getPosATL player; // disc center definition private _radius = 50; // radius definition // random radius private _angle = random 360; // angle definition (0..360) private _distance = random _radius; // distance from the center definition (0..radius) private _position = _center getPos [_distance, _angle]; // random position private _angle = random 360; // angle definition (0..360) private _randomSquareRoot = sqrt random 1; // random square-root to obtain a non-linear 0..1 value private _distance = _radius * _randomSquareRoot; // distance from the center definition (0..radius) private _position = _center getPos [_distance, _angle]; // Gaussian normal distribution private _angleHalf = random 180; private _randomGauss = random [-1, 0, 1]; private _distance = _radius * _randomGauss; private _position = _center getPos [_distance, _angleHalf];


Arma 2

private ["_center", "_radius", "_angle", "_distance", "_offset", "_position"]; // private definitions _center = getPosATL player; // disc center definition private _radius = 50; // radius definition // random radius _angle = random 360; _distance = random _radius; _offset = [sin _angle * _distance, cos _angle * _distance, 0]; _position = [_center, _offset] call BIS_fnc_vectorAdd; // random position _angle = random 360; _distance = _radius * sqrt random 1; _offset = [sin _angle * _distance, cos _angle * _distance, 0]; _position = [_center, _offset] call BIS_fnc_vectorAdd;


Armed Assault / Operation Flashpoint: Resistance

private ["_center", "_radius", "_angle", "_distance", "_offset", "_position"]; // private definitions _center = getPos player; // disc center definition - getPosASL can be used in Armed Assault private _radius = 50; // radius definition // random radius _angle = random 360; _distance = random _radius; _offset = [sin _angle * _distance, cos _angle * _distance]; _position = [(_center select 0) + (_offset select 0), (_center select 1) + (_offset select 1)]; // random position _angle = random 360; _distance = _radius * sqrt random 1; _offset = [sin _angle * _distance, cos _angle * _distance, 0]; _position = [(_center select 0) + (_offset select 0), (_center select 1) + (_offset select 1)];


Operation Flashpoint

This is an SQS Syntax example.

; private definitions private ["_center", "_radius", "_angle", "_distance", "_offset", "_position"] _center = getPos player; "disc center definition" _radius = 50; "radius definition" ; random radius _angle = random 360 _distance = random _radius _offset = [sin _angle * _distance, cos _angle * _distance] _position = [(_center select 0) + (_offset select 0), (_center select 1) + (_offset select 1)] ; random position _angle = random 360 _distance = _radius * sqrt random 1 _offset = [sin _angle * _distance, cos _angle * _distance, 0] _position = [(_center select 0) + (_offset select 0), (_center select 1) + (_offset select 1)]