checkPosOnDisplay = {
        _watcher = _this select 0;
        _objectPos = _this select 1;
        _viewDistance = 50;
        _visible = false;

        _vectorPos = [((getPosATL _watcher) select 0)+_viewDistance * sin(getDir _watcher),((getPosATL _watcher) select 1)+_viewDistance * cos(getDir _watcher), 0];
        if(_vectorPos distance _objectPos < _viewDistance)then{_visible = true};
        
_visible
};

bool = [player, _objectPos] call checkPosOnDisplay;