how to count how many GROUPS in a area?

[demonized 20]

is there a way i can count amount of groups not units inside a area?

Example i have 3 groups of takis spawned with BIS_fnc_spawngroup and they are guarding an area, is there a way i can count amount of groups without knowing their group names?

groupnames are _locallgrpname in spawn script.

[shuko 59]

Get all units within the area, get their group, add it to a list if its not there yet. Once out of units, count your list.

[demonized 20]

_trigger = _this select 0;  		// trigger east present repeated.


_allUnits = [];				// ready array for units.
_allgroups = [];				// ready array for groups.

_allUnits = _allUnits + _this;	// add all units in trigger to array.

while {count _allUnits > 0} do {
_unit = _this select 0;
_group = group _unit;
if (_group in _allgroups) then {
	_allUnits = _allUnits - _unit;
	hint "not adding already in there";
} else {
	_allUnits = _allUnits - _unit;
	_allgroups = _allgroups + _group;
};
};
_amountgrps = count _allgroups;
hint format["%1",_allgroups];  // this is the amount of groups inside trigger.

maybe this will work??

[celery 8]

enemygroups=[]

{if (side _x==east and _x in list areatrigger and !(group _x in enemygroups)) then {enemygroups=enemygroups+[group _x]}} forEach allUnits

Assuming that the area is set by a trigger named "areatrigger" repeatedly activated by anyone or east.

count enemygroups will give you the amount.

[demonized 20]

tnx will try that right now.

Edit: works nicely thank you.

Edit2: above works fine, but when i try using local variable _enemygroups instead of global enemygroups it returns 0, any idea why?

when using no space inbetween it returns 0 if using _enemygroups,

adding a space like here woked fine.

_enemygroups=[];
{if (side _x==east and _x in list areatrigger and !(group _x in _enemygroups)) then {_enemygroups = _enemygroups+[group _x]}} forEach allUnits;
_nu = count _enemygroups;
hint format["%1",_nu];

Edited December 22, 2010 by Demonized