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// USAGE
//
//
//
//

if(!isServer) exitWith {};
_random = selectrandom [1,2,3,4,5,6,7];

// Reduce for greater chance of QRF being spawned upon condition being met
if (_random>4) then
{
// Uncomment if you want a hint for failed roll for testing
hint "Helicopter Roll failed!";

}else{// <Don't touch this gubbin

// TRUE if you want helicopter to Search & Destroy after dropping troops. FALSE if you want it to bugger off and cease existing after dropping troops.
private _sad = false;
// Number of passengers - Not including their SL! - Setting this to 8 will result in 9 passengers for example.
private _dismounts = 19;
// Number of crew members - Not including the Pilot! - Setting this to 3 will result in the Pilot + Copilot and 2 gunners.
private _crewno = 3;
// Time to allow passengers to board. Setting this too low may result in the passengers being left behind.
private _sleeptime = 25;
// Side of group, crew and dismounts
// BLUFOR: "WEST"/WEST
// OPFOR:  "EAST"/EAST
// INDFOR: "GUER"/GUER
private _side = "EAST";
private _side2 = EAST;

// Classname of helicopter to spawn
private _type = "rhs_mi8mt_vdv";

// For each of the following, simply change the first letter in the classname to reflect the desired side.
// Eg. "O_Helipilot_F" becomes "B_Helipilot_F" for a BLUFOR pilot.
// Prefixes are O_ (Opfor), I_ (Indfor), B_ (Blufor).
// Classname of helicopter crew members.
private _crew = "O_Helipilot_F";
// Classname of Dismounts Squad Leader
private _sl = "O_Soldier_SL_F";
// Classname of Dismounts AR
private _ar = "O_Soldier_AR_F";
// Classname of Dismounts Rifleman AT
private _rat = "O_Soldier_LAT_F";
// Classname of Dismounts Rifleman
private _r = "O_Soldier_F";

// Markers to select from randomly when spawning QRF.
// Place down 3 markers with these as their VariableNames - Don't include the ""s. Reduce the Alpha of
// the markers to 0 once you're done testing.
private _pos_Spawn = getMarkerPos selectrandom ["QRF_H1_S","QRF_H2_S","QRF_H3_S"];
// Uncomment if you want a timer before the QRF is spawned and dispatched. Useful for missions in a smaller AO/more linear route for players
// Time in seconds
//sleep 180;

// Uncomment if you want to send a hint on successful roll, for testing purposes
hint "QRF (Helicopter) spawned!";

// (Easy) customisation end
// ----------------------------------------------------------------------------------------------------------------

// Move helicopter spawn-point 1m off ground
_pos_Spawn vectorAdd [0,0,3];

// Get position slightly away from selected spawn-point (to avoid badshit). Infantry and crew will spawn here.
private _pos_Ispawn = [_pos_Spawn,20,0] call BIS_fnc_relPos;

// Create invisible helipad for helicopter to land on and as point-of-reference for waypoint creation
private _H_LZ = "Land_HelipadEmpty_F" createVehicle [0,0,0];

// Get random position 200-300m away in random direction from randomly selected player - depends on alias_hunt.sqf
private _k = getpos _this;
private _pos_H_LZ = [_k, 200, 300, 10, 0, 10, 0] call BIS_fnc_findSafePos;
//pos_H1_LZ = [hunt_alias,200+random 100, random 360] call BIS_fnc_relPos;
_H_LZ setpos _pos_H_LZ;

// Create Helicopter at Spawn Marker
private _H = createVehicle [_type,_pos_Spawn,[],0,"CAN_COLLIDE"];
// Create Pilots' group
private _H_G = createGroup [_side2, true];
// Create group leader (Pilot of the helicopter) and move into pilot's seat
private _H_U = _H_G createUnit [_crew, _pos_Ispawn, [], 0, "NONE"];
private _H_L = group _H_U selectLeader _H_U;
_H_U moveindriver _H;
// Create crew and move into helicopter
private _Hcounter = 0;
while {_Hcounter < _crewno} do {
	_newHC = _crew createUnit [_pos_Ispawn, _H_G, "this moveinAny _H;"];
	_Hcounter = _Hcounter + 1;
};

_H engineOn false;
// Orient helicopter to LZ
private _H_DIR = _H getDir _H_LZ;
_H setDir _H_DIR;
_H setPos [(getPos _H) select 0, (getPos _H) select 1, 10];

// Set Pilot behaviour
_H_G setCombatMode "BLUE";
_H_G setBehaviour "CARELESS";
_H_G setSpeedMode "FULL";

// Create helicopter group's first waypoint at generated LZ
private _H_W1 = _H_G addWaypoint [_pos_Spawn, 0];
_H_W1 setWaypointType "HOLD";
_H_W1 waypointAttachVehicle _H;

private _H_W2 = _H_G addWaypoint [getPos _H_LZ, 0];
_H_W2 setWaypointType "TR UNLOAD";
// Pilot behaviour to S&D-friendly settings on completion (?)
_H_W2 setWaypointStatements ["true",""];

if (_sad) then {
// Create helicopters's search-and-destroy waypoint at selected player
private _H_W3 = _H_G addWaypoint [_k, 0];
_H_W3 setWaypointType "SAD";
// H1_W2 setWaypointBehaviour "AWARE";
_H_W3 setWaypointSpeed "LIMITED";
_H_W3 setWaypointStatements ["True",""];
}
else
{// Create Helicopter's egress waypoint at its spawn-point, and deletes the helicopter upon it being reached.
private _H_W3 = _H_G addWaypoint [_pos_Spawn, 0];
_H_W3 setWaypointType "MOVE";
_H_W3 setWaypointStatements ["True","deleteVehicle driver _H; deletevehicle crew _H; deleteGroup _H_G;"];
};

// Create Infantry Group
private _I_G = createGroup [_side2, true]; // explicitly mark for cleanup
private _I_U = _I_G createUnit [_sl, _pos_Ispawn, [], 0, "NONE"];
private _I_L = group _I_U selectLeader _I_U;
private _counter = 0;
while {_counter < _dismounts} do {
	_newUnit = selectrandom [_r,_r,_r,_r,_r,_ar,_rat] createUnit [_pos_Ispawn, _I_G];
	_counter = _counter + 1;
};


// Create Infantry "GETIN" waypoint at Helicopter
private _I_W1 = _I_G addWaypoint [getPosATL _H, 0];
_I_W1 setWaypointType "GETIN";
_I_W1 waypointAttachVehicle _H;


// Create Infantry "GETOUT" waypoint at generated LZ
private _I_W2 = _I_G addWaypoint [getPos _H_LZ, 0];
_I_W2 setWaypointType "GETOUT";


// Create infantry S&D waypoint at selected player's pos
private _I_W3 = _I_G addWaypoint [_k, 0];
_I_W3 setWaypointType "SAD";
_I_W3 setWaypointStatements ["true",""];
_I_W3 waypointAttachVehicle _this;

// Transfer all AI to HC
[true] call potato_zeusHC_fnc_transferGroupsToHC;

sleep _sleeptime;
// Delete _H "HOLD" waypoint; Switch on the engine and set altitude
deleteWaypoint [_H_G, 1];
_H engineOn True;
_H flyinheight 20;

};