Arma 3 script "unit_spawn.sqf"

/*  AI Unit Create Script for special Crewmen or Pilots, fit for usage on ships.
    Use this script especially for important AI's like Pilots or Crewmen which offer services.

    Developed by Steam-User immerfestedruv.

    In the Unit Init Field insert:
    this addEventHandler ["killed", {0 = [_this,5,"blackfish_1","Driver",helipad_2,15] execVM "unit_spawn.sqf"}];

    You need to add some more Init Lines below, to handle the vehicle it should get in.*/

_unit = (_this select 0) select 0; // First Argument, get Unit's details
_delay = _this select 1; // Second Argument,get the init set respawn time
_vehCall = _this select 2; // Third Argument, the Variable-Name of the unit's vehicle(Call-Sign)
_vehSeat = _this select 3; // Forth Argument, on which Seat shall the unit sit
_parkPlace = _this select 4; // Fifth Argument, the place where the vehicle parks
_parkRad = _this select 5; // Sixth Argument, possible park Radius from the center of the vehicle park
hint format ["unit/delay/vehCall/vehSeat/parkPlace/parkRad %1 / %2 / %3 / %4 / %5 / %6",_unit,_delay,_vehCall,_vehSeat,_parkPlace,_parkRad];
_dirUnit = getDir _unit; // get original facing
_posUnit = getPosATL _unit; // get original position
_unitType = typeOf _unit; // get the unit type
_unitgroup = group _unit; // get group of the original unit
_unitName = vehicleVarName _unit; // get the Variable-Name of the unit
_unitRank = rank _unit; // get the units orignal rank
_unitSkill = skill _unit; // get the original skill of the unit


if(isServer) then{
    sleep _delay*4; // sleep a bit
    if(!alive _unit) then { //true if unit is not alive
        deleteVehicle _unit; // clear up old units
        sleep _delay; // respawn time between deletion and respawn

        // create a new unit of same type at starting position
        _unitType createUnit [
            _posUnit,
            _unitgroup,
                // Following sentences are added to the init line of the _unit
                "_unit = this; //_unit is still an object but in nect line it will be an array
                _unit setVariable [ 'unitDef',[_delay,_vehCall,_vehSeat,_parkPlace,_parkRad];


                /* We have to extract the Definitions from our Array, but the array is in the addEventHandler known as
                _this and not as _unit, so we have to define _unit again. */
                _unit addEventHandler ['killed', {
                    _unit = _this select 0;
                    [_this, (_unit getVariable 'unitDef') select 0, //delay
                    (_unit getVariable 'unitDef') select 1, //vehCall
                    (_unit getVariable 'unitDef') select 2, //_vehSeat
                    (_unit getVariable 'unitDef') select 3, //_parkPlace
                    (_unit getVariable 'unitDef') select 4, //_parkRad
                    ] execVM 'unit_spawn.sqf'}];


                [this,_delay,_vehCall,_vehSeat,_parkPlace,_parkRad] execVM 'unit_getin.sqf';",
            _unitSkill,
            _unitRank];
        _unit setPosATL _posUnit; // set correct position
        _unit setVehicleVarName _unitName;
        _unit setDir _dirUnit; // set correct facing of the unit
    };
};