Item functors

The game implements validation of item data as a set of predicates called item functors.

The validation is performed before the items can be displayed e.g. in the store grid UI.

IDs

Item functor objects are stored in StoreModel. On creation each is assigned a 32-bit functorId:

• the low-order word (functorId & 0xFFFF) is item type (1-13)
• the high-order word (functorId - functorId & 0xFFFF) is weapon type with additional -1, -2 and compatibility bridge-originating values

The functor IDs are associated with SKU IDs.

List

There are more item functors used by the game, these are only the item type and subtype validators.

XXXX is the weapon component list key (weapon type) sent in compatibility bridge map. Note that it's a 16-bit value.

ID	Functor name	Item
0x00000002	SingleSubItemTypeEqualFunctor<RDV_st_Weapon>	Weapon (assault rifle)
0x00010002	SingleSubItemTypeEqualFunctor<RDV_st_Weapon>	Weapon (sniper rifle)
0x00020002	SingleSubItemTypeEqualFunctor<RDV_st_Weapon>	Weapon (shotgun)
0x00030002	SingleSubItemTypeEqualFunctor<RDV_st_Weapon>	Weapon (SMG)
0x00040002	SingleSubItemTypeEqualFunctor<RDV_st_Weapon>	Weapon (LMG)
0x00050002	SingleSubItemTypeEqualFunctor<RDV_st_Weapon>	Weapon (pistol)
0x00060002	SingleSubItemTypeEqualFunctor<RDV_st_Weapon>	Weapon (grenade)
0xXXXX0004	CompatibleComponentTypeEqualFunctor	Component
0xFFFE0004	SingleSubItemTypeEqualFunctor<RDV_st_Component>	Component
0xFFFF0001	PackageEqualFunctor	SKU bundle
0xFFFF0002	SingleItemTypeEqualFunctor	Weapon
0xFFFF0003	SingleItemTypeEqualFunctor	Armor insert
0xFFFF0004	SingleItemTypeEqualFunctor	Component
0xFFFF0005	unused	Avatar
0xFFFF0006	SingleItemTypeEqualFunctor	Boost
0xFFFF0007	SingleItemTypeEqualFunctor	Consumable
0xFFFF0008	SingleItemTypeEqualFunctor	Armor item
0xFFFF0009	SingleItemTypeEqualFunctor	Apply item
0xFFFF000A	SingleItemTypeEqualFunctor	Armor tier
0xFFFF000B	SingleItemTypeEqualFunctor	Ability
0xFFFF000C	SingleItemTypeEqualFunctor	Ability upgrade
0xFFFF000D	SingleItemTypeEqualFunctor	Passive ability

SingleItemTypeEqualFunctor

Validates basic item data:

• SKU item vector size (always 1)
• template item/SKU item ID association
• template item type with functor's type (controlled by item and weapon types)

bool __thiscall RDV_ft_SingleItemTypeEqualFunctor::Validate(RDV_ft_SingleItemTypeEqualFunctor *this, char skuId)
{
  RDV_cl_StoreModelInterface::VMT **storeVmt; // eax
  GenericStaticList *skus; // eax
  DWORD skuItemId; // ST30_4
  RDV_cl_InventoryModel::VMT::Interface **invVmt; // eax
  bool result; // al
  GR5_TemplateItemAligned *tempItem; // [esp+30h] [ebp-8h]
  GR5_SKUAligned *sku; // [esp+34h] [ebp-4h]

  storeVmt = (this->pDllClient->pVMT->RDV_cl_DLLClient::GetStoreModelInterface)(this->pDllClient);
  skus = ((*storeVmt)->j_RDV_cl_StoreModel::GetSkuList)(storeVmt);
  sku = j_GetSkuFromList(skus, &skuId);
  result = 0;
  if ( sku )
  {
    if ( sku->skuItemVec.size == 1 )
    {
      skuItemId = sku->skuItemVec.skuItems->itemID;
      invVmt = (this->pDllClient->pVMT->RDV_cl_DLLClient::GetInventoryModelInterface)(this->pDllClient);
      tempItem = ((*invVmt)->j_RDV_cl_InventoryModel::GetTemplateItemForSlot)(invVmt, skuItemId);
      if ( tempItem )
      {
        if ( tempItem->itemType == this->itemType )
          result = 1;
      }
    }
  }
  return result;
}

CompatibleComponentTypeEqualFunctor

Performs initial validation of weapon component data:

• SKU item vector size (always 1)
• template item type (4 for components)
• compatibility bridge entry - value should match the component id

bool __thiscall RDV_ft_CompatibleComponentTypeEqualFunctor::Validate(RDV_ft_CompatibleComponentTypeEqualFunctor *this, char a2)
{
  // [COLLAPSED LOCAL DECLARATIONS. PRESS KEYPAD CTRL-"+" TO EXPAND]

  storeVmt = (this->pDllClient->pVMT->RDV_cl_DLLClient::GetStoreModelInterface)(this->pDllClient);
  skus = ((*storeVmt)->j_RDV_cl_StoreModel::GetSkuList)(storeVmt);
  sku = j_GetSkuFromList(skus, &a2);
  if ( sku
    && sku->skuItemVec.size == 1
    && (skuItemId = sku->skuItemVec.skuItems->itemID,
        invVmt = (this->pDllClient->pVMT->RDV_cl_DLLClient::GetInventoryModelInterface)(this->pDllClient),
        (tempItem = ((*invVmt)->j_RDV_cl_InventoryModel::GetTemplateItemForSlot)(invVmt, skuItemId)) != 0)
    && tempItem->itemType == 4
    && (weapVmt = (this->pDllClient->pVMT->RDV_cl_DLLClient::GetWeaponsModelInterface)(this->pDllClient),
        bridge = ((*weapVmt)->j_RDV_cl_WeaponsModelInterface::GetCompatBridge)(weapVmt),
        (mapList = j_RDV_cl_Map::GetListByKey(bridge, &this->compatBridgeId)) != 0) )
  {
    result = sub_1001194B(mapList, &skuItemId) != mapList;
  }
  else
  {
    result = 0;
  }
  return result;
}