detect init.sqf

// init.sqf
if (isServer) then {
    0 spawn {
        private _fnc_isDetectedUnitInArea = {
            private _enemies = allUnits select {side group _x == east};
            allUnits inAreaArray "Marker1" select {side group _x == west} findIf {
                private _target = _x;
                _enemies findIf {_x knowsAbout _target >= 1.5} != -1
            } != -1
        };

        private _isDetected = false;

        waitUntil {
            sleep 1;

            isNil {
                if !(_isDetected isEqualTo call _fnc_isDetectedUnitInArea) then {
                    _isDetected = !_isDetected;

                    if (_isDetected) then {
                        "Enemies detected in area!" remoteExec ["systemChat"];
                    } else {
                        "No enemies detected in area." remoteExec ["systemChat"];
                    };
                };
            };

            false // indefinite loop
        };
    };
};