[Arma 3] Purchasing launchers directly from traders fix

/**
 * ExileClient_util_playerEquipment_add
 *
 * Exile Mod
 * www.exilemod.com
 * © 2015 Exile Mod Team
 *
 * Arma_3_AServer > mpmissions > Exile.Altis > config.cpp search for "class CfgExileCustomCode"
 *
 * Add this overwrite:  ExileClient_util_playerEquipment_add = "custom\rockets\ExileClient_util_playerEquipment_add.sqf";  // Rocket launcher fix
 *
 * This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
 * To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/.
 */

private["_player","_itemClassName","_bulletCount","_itemInformation","_itemCategory","_itemType","_added","_compatibleWeaponItems"];
_player = _this select 0;
_itemClassName = toLower (_this select 1);
_bulletCount = [_this, 2, -1] call BIS_fnc_param;
_itemInformation = [_itemClassName] call BIS_fnc_itemType;
_itemCategory = _itemInformation select 0;
_itemType = _itemInformation select 1;
_added = false;
if (_itemCategory isEqualTo "Magazine") then
{
    {
        if !(_x isEqualTo "") then
        {
            switch (_forEachIndex) do
            {
                case 0:
                {
                    if ((primaryWeaponMagazine _player) isEqualTo []) then
                    {
                        _compatibleWeaponItems = _x call ExileClient_util_gear_getCompatibleWeaponItems;
                        if (_itemClassName in _compatibleWeaponItems) then
                        {
                            if (_bulletCount isEqualTo -1) then
                            {
                                _player addPrimaryWeaponItem _itemClassName;
                            }
                            else
                            {
                                _player addWeaponItem [_x, [_itemClassName, _bulletCount]];
                            };
                            _added = true;
                        };
                    };
                };
                case 1:
                {
                    if ((secondaryWeaponMagazine _player) isEqualTo []) then
                    {
                        _compatibleWeaponItems = _x call ExileClient_util_gear_getCompatibleWeaponItems;
                        if (_itemClassName in _compatibleWeaponItems) then
                        {
                            if (_bulletCount isEqualTo -1) then
                            {
                                _player addSecondaryWeaponItem _itemClassName;
                            }
                            else
                            {
                                _player addWeaponItem [_x, [_itemClassName, _bulletCount]];
                            };
                            _added = true;
                        };
                    };
                };
                case 2:
                {
                    if ((handgunMagazine _player) isEqualTo []) then
                    {
                        _compatibleWeaponItems = _x call ExileClient_util_gear_getCompatibleWeaponItems;
                        if (_itemClassName in _compatibleWeaponItems) then
                        {
                            if (_bulletCount isEqualTo -1) then
                            {
                                _player addHandgunItem _itemClassName;
                            }
                            else
                            {
                                _player addWeaponItem [_x, [_itemClassName, _bulletCount]];
                            };
                            _added = true;
                        };
                    };
                };
            };
        };
        if (_added) exitWith {};
    }
    forEach [primaryWeapon _player, secondaryWeapon _player, handgunWeapon _player];
}
else
{
    switch (_itemType) do
    {
        case "AssaultRifle",
        case "Rifle",
        case "SniperRifle",
        case "SubmachineGun",
        case "MachineGun",
        case "Launcher",
        case "RocketLauncher",
        case "MissileLauncher",
        case "GrenadeLauncher":
        {
            _player addWeaponGlobal _itemClassName;
            _added = true;
        };
        case "Handgun":
        {
            _player addWeaponGlobal _itemClassName;
            _added = true;
        };
        case "LaserDesignator",
        case "Throw",
        case "Binocular":
        {
            _player addWeaponGlobal _itemClassName;
            _added = true;
        };
        case "GPS",
        case "Map",
        case "Radio",
        case "UAVTerminal",
        case "Watch",
        case "Compass",
        case "NVGoggles",
        case "Glasses":
        {
            _player linkItem _itemClassName;
            _added = true;
        };
        case "Headgear":    { _player addHeadgear _itemClassName; _added = true; };
        case "Backpack":    { _player addBackpackGlobal _itemClassName; _added = true; };
        case "Uniform":     { _player forceAddUniform _itemClassName; _added = true; };
        case "Vest":        { _player addVest _itemClassName; _added = true; };
        case "AccessorySights",
        case "AccessoryPointer",
        case "AccessoryMuzzle",
        case "AccessoryBipod":
        {
            {
                if !(_x isEqualTo "") then
                {
                    _compatibleWeaponItems = _x call ExileClient_util_gear_getCompatibleWeaponItems;
                    if (_itemClassName in _compatibleWeaponItems) exitWith
                    {
                        switch (_forEachIndex) do
                        {
                            case 0: { _player addPrimaryWeaponItem _itemClassName; _added = true; };
                            case 1: { _player addSecondaryWeaponItem _itemClassName; _added = true; };
                            case 2: { _player addHandgunItem _itemClassName; _added = true; };
                        };
                    };
                };
                if (_added) exitWith {};
            }
            forEach [primaryWeapon _player, secondaryWeapon _player, handgunWeapon _player];
        };
    };
};
_added