Posted: . At: 10:48 AM. This was 4 years ago. Post ID: 14232
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How to properly call a function from a trigger in Arma 3.

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Calling a function from a trigger in Arma 3 can be very tricky, this is how I managed to do it.

commanderDead = {
	['task2','SUCCEEDED'] call BIS_fnc_taskSetState;
	{ _x setMarkerPos getPos house1; } forEach ["hqMarker", "hqCircle"];
	[player, player, opfor, ["LOP_AFR_OPF_Infantry_IED","LOP_AFR_OPF_Infantry_Corpsman","LOP_AFR_OPF_Infantry_GL","LOP_AFR_OPF_Infantry_Rifleman_4","LOP_AFR_OPF_Infantry_Rifleman_4","LOP_AFR_OPF_Infantry_AR_Asst_2","LOP_AFR_OPF_Infantry_AT","LOP_AFR_OPF_Infantry_Rifleman_8","LOP_AFR_OPF_Infantry_Rifleman_5"], 16, 120] spawn BIS_fnc_spawnEnemy;
	private _attack = [] spawn KER_fnc_attackers;
};
 
man2 = createTrigger ["EmptyDetector", Loc];
man2 setTriggerArea [20, 20, 0, false];
man2 settriggerText "";
man2 setTriggerActivation ["NONE", "PRESENT", false];
man2 setTriggerStatements ["!alive commandant","thistrigger call commanderDead;",""];

This calls a function when the commander in the HQ is dead.

This is the fn_attackers function that is called by the [] spawn KER_fnc_attackers statement.

#define ASSUALTERS "rhsgref_group_chdkz_infantry_aa","rhsgref_group_chdkz_infantry_at","rhsgref_group_chdkz_infantry_mg","rhsgref_group_chdkz_infantry_patrol","rhsgref_group_chdkz_insurgents_squad"
 
_enemiesArray = [grpNull];
 
for "_x" from 1 to 5 do {
	_patrolGroup = createGroup east;	
	_randomPosInf = [Loc, 1, 900, 3, 0, 8, 0] call BIS_fnc_findSafePos;
 
	_patrolGroup = [_randomPosInf, EAST, (configfile >> "CfgGroups" >> "East" >> "rhsgref_faction_chdkz" >> "rhsgref_group_chdkz_insurgents_infantry" >> [ASSUALTERS] call BIS_fnc_selectRandom)] call BIS_fnc_spawnGroup;
	[_patrolGroup, 5, true] call BIS_fnc_EXP_camp_balanceGroup;
	[_patrolGroup, [getPos house1, 200, 200, 0, false]] call CBA_fnc_taskSearchArea;
	_enemiesArray = _enemiesArray + [_patrolGroup];
	_patrolGroup enableDynamicSimulation true;
};

Calling a function in the commanderDead inline function with spawn instead of call is the key. This runs a function from a function and allows spawning enemies when something happens in the mission. The fn_attackers function selects a random type of enemy squad and sends them to attack the HQ.

How to wait until 3 triggers are activated.

waitUntil {
	sleep 3;
	((triggeractivated adt) && (triggeractivated tower2) && (triggeractivated man2))
};

The code above will wait until 3 triggers have activated before continuing on and running more code. This would be very useful for a scripted mission.


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