Optional setting to disable laser pointer system

[PabstMirror]

Adds an ACE_setting to control the laser pointer feature.

A lot of times we're not using the feature, and it does have some cost:
On each frame ace_laserpointer_onDraw_counter: Average: 0.460449s / 1953 = 0.235765ms

If system isn't enabled, we never call onDraw or add the nearUnits PFEH..
If users starts with a "laser" attachement the keybind will still allow them to switch back to a "IR" pointer.

[nicolasbadano]

Nice

[ulteq]

Can't we use nearEntities instead of nearestObjects?

_nearUnits = (positionCameraToWorld [0,0,0]) nearEntities ["Man", 50];
if (count _nearUnits < 10) then {
    {
        _nearUnits append crew _x;

        if (count _nearUnits > 10) exitWith {
            _nearUnits resize 10;
        };

    } forEach ((positionCameraToWorld [0,0,0]) nearEntities ["AllVehicles", 50]);
} else {
    _nearUnits resize 10;
};

This runs a lot faster for me.

[kymckay]

Pretty sure you can use nearEntities, the command is known to be faster 👍

Also, instead of checking if the array gets bigger than 10 and then resizing it back to 10, can't you just check if it's 10 and then exitWith?

Nevermind, I see why it's done that way now.

[PabstMirror]

nearestObjects sorts by distance, so the results wouldn't be exactly the same.

[ulteq]

We can easily sort the nearEntities array with the new sort command. It would probably still be much faster. I did the same in the HuntIR module.

Reference: https://github.com/acemod/ACE3/blob/master/addons/huntir/functions/fnc_cam.sqf#L57-L64

We should benchmark it.