/*
 * Author: KoffeinFlummi, esteldunedain
 * Display the adjustment knobs, update their value and fade them out later
 *
 * Arguments:
 * None
 *
 * Return Value:
 * None
 *
 * Example:
 * [] call ace_scopes_fnc_showZeroing
 *
 * Public: No
 */
#include "script_component.hpp"

disableSerialization;

private _weaponIndex = [ACE_player, currentWeapon ACE_player] call EFUNC(common,getWeaponIndex);
if (_weaponIndex < 0) exitWith {};

private _adjustment = ACE_player getVariable QGVAR(Adjustment);
if (isNil "_adjustment") then {
    // [Windage, Elevation, Zero]
    _adjustment = [[0, 0, 0], [0, 0, 0], [0, 0, 0]];
};

// Display the adjustment knobs
private _layer = [QGVAR(Zeroing)] call BIS_fnc_rscLayer;
_layer cutRsc [QGVAR(Zeroing), "PLAIN", 0, false];

// Find the display
private _display = uiNamespace getVariable [QGVAR(ZeroingDisplay), displayNull];
if (isNull _display) exitWith {};

// Update values
private _zeroing = _adjustment select _weaponIndex;
_zeroing params ["_elevation", "_windage"];
private _vertical = _display displayCtrl 12;
private _horizontal = _display displayCtrl 13;
_vertical ctrlSetText (str _elevation);
_horizontal ctrlSetText (str _windage);

// Set the time when to hide the knobs
GVAR(timeToHide) = diag_tickTime + 3.0;

if !(isNil QGVAR(fadePFH)) exitWith {};

// Launch a PFH to wait and fade out the knobs
GVAR(fadePFH) = [{
    if (diag_tickTime >= GVAR(timeToHide)) exitWith {
        private _pfhId = _this select 1;
        private _layer = [QGVAR(Zeroing)] call BIS_fnc_rscLayer;
        _layer cutFadeOut 2;

        GVAR(fadePFH) = nil;
        [_pfhId] call CBA_fnc_removePerFrameHandler;
    };
}, 0.1, []] call CBA_fnc_addPerFrameHandler