uav_events_armaworld.sqf

// description.ext
class Extended_DisplayLoad_EventHandlers {
    class RscDisplayAVTerminal {
        Mission = "'Mission_UAVTerminalOpened' call CBA_fnc_localEvent";
    };
};

// init.sqf
Mission_isUAVControlTaken = false;
{
    private _unit = player;
    private _uavControl = UAVControl getConnectedUAV _unit;
    private _index = _uavControl find _unit;
    if (_index != -1 && {_uavControl select (_index + 1) != ""}) then {
        if (!Mission_isUAVControlTaken) then {
            Mission_isUAVControlTaken = true;
            "Mission_UAVControlTaken" call CBA_fnc_localEvent;
        };
    } else {
        Mission_isUAVControlTaken = false;
    };
} call CBA_fnc_addPerFrameHandler;

["Mission_UAVTerminalOpened", {
    systemChat str ["UAV Terminal", diag_frameNo];
}] call CBA_fnc_addEventHandler;

["Mission_UAVControlTaken", {
    systemChat str ["UAV Control", diag_frameNo];
}] call CBA_fnc_addEventHandler;