feat: Add helicopter capture objective

[fishgills]

Adds a new dynamic objective to capture a helicopter.

This new objective spawns a helicopter with enough seats for the current number of players. The helicopter is guarded by a small group of enemy soldiers.

A new task is created for the players, guiding them to the helicopter's location. The task is completed when the players get close to the helicopter and unlock it.

This objective will only spawn on the Altis and Livonia maps.

[hunterkiller2011]

It appears that the task was not created correctly and was not working for me. I ended up changing it on my end and I replaced the task creation with just a marker creation with a helicopter icon that would work like the other ammo depots and motor pools on the map.

Suggested change

	// Create task for players
	private _taskID = "A3E_Task_CaptureHeli_" + str (round (random 1000));
	[
	"A3E_Task_CaptureHeli",
	true,
	[
	"An abandoned helicopter has been spotted. If you can capture it, you might be able to use it for extraction. It is likely guarded, so approach with caution.",
	"Capture Helicopter",
	"Capture Helicopter"
	],
	_heli,
	"CREATED"
	] remoteExec ["BIS_fnc_taskCreate",-2, _taskID];
	// Set marker
	private _taskID = "A3E_Task_CaptureHeli_" + str (round (random 1000));
	[_taskID,_heli,"o_air"] call A3E_fnc_createLocationMarker;
	_marker = createMarkerLocal [_taskID,_heli,"o_air"];
	_marker setMarkerShapeLocal "ELLIPSE";
	_marker setMarkerAlphaLocal 0;
	_marker setMarkerSizeLocal [50, 50];

I changed your task code to the following and it worked fine for me but as I said I ended up removing it:

Suggested change

	// Create task for players
	private _taskID = "A3E_Task_CaptureHeli_" + str (round (random 1000));
	[
	"A3E_Task_CaptureHeli",
	true,
	[
	"An abandoned helicopter has been spotted. If you can capture it, you might be able to use it for extraction. It is likely guarded, so approach with caution.",
	"Capture Helicopter",
	"Capture Helicopter"
	],
	_heli,
	"CREATED"
	] remoteExec ["BIS_fnc_taskCreate",-2, _taskID];
	// Create task for players
	private _taskID = "A3E_Task_CaptureHeli_" + str (round (random 1000));
	private _taskParams = [
	true, // owner: true for all playable units
	_taskID, // taskID: unique task ID
	[
	"An abandoned helicopter has been spotted. If you can capture it, you might be able to use it for extraction. It is likely guarded, so approach with caution.", // Description
	"Capture Helicopter", // Title
	"Capture Helicopter" // Marker (deprecated)
	],
	objNull, // destination: objNull = hidden on the map
	"CREATED", // state: initial state is "CREATED"
	-1, // priority: Don't auto assign
	false // showNotification: true to show notification
	];
	_taskParams remoteExec ["BIS_fnc_taskCreate", allPlayers]; // Execute BIS_fnc_taskCreate on all clients

[hunterkiller2011]

The function was not running for me, I was getting an error regarding an undefined variable in fn_initServer.sqf. I had to add class createHeliCapture {}; to class Server in functions.hpp in order for the script to execute.