Arsenal - Improve base backpack checking

addons/arsenal/XEH_PREP.hpp

@@ -17,6 +17,7 @@ PREP(attributeLoad);
 PREP(attributeMode);
 PREP(attributeSelect);
 PREP(baseAttachment);
+PREP(baseBackpack);
 PREP(baseOptic);
 PREP(baseWeapon);
 PREP(buttonActionsPage);

addons/arsenal/XEH_preStart.sqf

@@ -2,8 +2,9 @@
 
 #include "XEH_PREP.hpp"
 
-// Cache for FUNC(baseWeapon)
+// Caches for FUNC(baseX)
 uiNamespace setVariable [QGVAR(baseWeaponNameCache), createHashMap];
+uiNamespace setVariable [QGVAR(baseBackpackCache), createHashMap];
 
 // Caches for names, pictures, mod icons
 uiNamespace setVariable [QGVAR(addListBoxItemCache), createHashMap];

addons/arsenal/functions/fnc_baseBackpack.sqf

@@ -0,0 +1,52 @@
+#include "..\script_component.hpp"
+/*
+ * Author: LinkIsGrim
+ * Returns base backpack for a preset (loaded/AI) backpack variant
+ * Basically CBA_fnc_getNonPresetClass with model checking, as some backpacks don't have variants with no cargo (#10346)
+ *
+ * Arguments:
+ * 0: Backpack classname <STRING>
+ *
+ * Return Value:
+ * Most viable base backpack class, "" if not a backpack <STRING>
+ *
+ * Example:
+ * "B_Kitbag_rgr_Exp" call ace_arsenal_fnc_baseBackpack
+ *
+ * Public: Yes
+ */
+
+params [["_item", "", [""]]];
+
+TRACE_1("looking up base backpack",_item);
+
+(uiNamespace getVariable QGVAR(baseBackpackCache)) getOrDefaultCall [toLowerANSI _item, {
+    private _config = configFile >> "CfgVehicles" >> _item;
+    // TODO: handle file extension differences (implicit vs explicit .p3d)
+    // model could have missing file extension in a variant and present in parent, but that's stupid, bad config.
+    // It'll be inherited and match 99% of the time. Good enough until it burns, see texture checking below.
+    private _model = getText (_config >> "model");
+
+    // Texture checking is a can of worms: we'd have to create a hashmap nConfigs + 1 times and see if they match...
+    // ...and it wouldn't handle small things like custom patches or name tags
+    // If this ever comes up (it likely will), we'll burn that bridge when we get to it.
+    // private _textures = getArray (_config >> "hiddenSelectionsTextures");
+
+    while {
+        (isClass _config) &&
+        {getNumber (_config >> "scope") > 0} && // Some preset backpacks are scope = 1
+        {getText (_config >> "model") == _model}
+        // && {getArray (_config >> "hiddenSelectionsTextures") isEqualTo _textures}
+    } do {
+        if (
+            (count (_config >> "TransportItems") == 0) &&
+            {count (_config >> "TransportMagazines") == 0} &&
+            {count (_config >> "TransportWeapons") == 0}
+        ) then {
+            break;
+        };
+        _config = inheritsFrom _config;
+    };
+
+    configName _config // return, will be "" if not a backpack
+}, true]

addons/arsenal/functions/fnc_replaceUniqueItemsLoadout.sqf

@@ -70,7 +70,7 @@ private _cfgVehicles = configFile >> "CfgVehicles";
             if (_containerClass != "") then {
                 if (_forEachIndex == IDX_LOADOUT_BACKPACK) then {
                     // Check for non-preset first
-                    _uniqueBaseCfgText = [_containerClass, "CfgVehicles"] call CBA_fnc_getNonPresetClass;
+                    _uniqueBaseCfgText = _containerClass call FUNC(baseBackpack);
 
                     if (_uniqueBaseCfgText != "") then {
                         _containerClass = _uniqueBaseCfgText;
@@ -102,7 +102,7 @@ private _cfgVehicles = configFile >> "CfgVehicles";
                             if (_containerClass != "") then {
                                 if (_isBackpack) then {
                                     // Check for non-preset first
-                                    _uniqueBaseCfgText = [_containerClass, "CfgVehicles"] call CBA_fnc_getNonPresetClass;
+                                    _uniqueBaseCfgText = _containerClass call FUNC(baseBackpack);
 
                                     if (_uniqueBaseCfgText != "") then {
                                         _containerClass = _uniqueBaseCfgText;

addons/arsenal/functions/fnc_updateCurrentItemsList.sqf

@@ -65,7 +65,7 @@ private _indexCurrentItems = -1;
         case IDX_LOADOUT_BACKPACK: {
             _x params [["_backpack", ""], ["_items", []]];
             if (_backpack != "") then {
-                _backpack = [_backpack, "CfgVehicles"] call CBA_fnc_getNonPresetClass;
+                _backpack = _backpack call FUNC(baseBackpack);
             };
             GVAR(currentItems) set [IDX_CURR_BACKPACK, _backpack];
             GVAR(currentItems) set [IDX_CURR_BACKPACK_ITEMS, _items];

addons/arsenal/functions/fnc_updateUniqueItemsList.sqf

@@ -103,7 +103,7 @@ private _fnc_uniqueEquipment = {
 
             // Handle preset (loaded/AI) backpacks
             if (_containerClass != "" && _forEachIndex == IDX_LOADOUT_BACKPACK) then {
-                _containerClass = [_containerClass, "CfgVehicles"] call CBA_fnc_getNonPresetClass;
+                _containerClass = _containerClass call FUNC(baseBackpack);
             };
 
             // Remove all unique equipment in tab; Add container as a unique equipment

addons/arsenal/functions/fnc_verifyLoadout.sqf

@@ -50,7 +50,7 @@ private _fnc_filterLoadout = {
                     _name = _name call FUNC(baseWeapon);
                     if NOT_IN_ARSENAL then {
                         // This could be a backpack
-                        private _temp = [_name, "CfgVehicles"] call CBA_fnc_getNonPresetClass;
+                        private _temp = _name call FUNC(baseBackpack);
                         if (_temp == "") then { // It's not
                             _unavailableItemsList pushBack _name;
                             _name = "";