AddItemToTrade

[pavlicekdominik]

Function: AddItemToTrade

Purpose

To add a specific item stack from a party's inventory to the current trading transaction. This includes handling both entirely new items and additions to items that are already part of the trade.

Inputs

• FInventoryItemSlotStack ItemStack: The stack indicating the item and its quantity we wish to add to the trade.
• TScriptInterface PartyInventory: The inventory of the party (either player or trader) from which the item is coming.

Outputs

• bool: Whether the item was successfully added to the trade or not.

Pseudocode

Function AddItemToTrade(FInventoryItemSlotStack ItemStack, TScriptInterface<IMounteaInventoryInterface> PartyInventory) -> bool:

    // Check PartyInventory
    If not PartyInventory.IsValid():
        Return false

    // Check if the item is valid
    If not ItemStack.IsValid():
        Return false

    // Check whether we are updating Player's or Trader's Tradings
    IsTrader = PartyInventory is equal OwningInventory

    // Go Other party path (usually Player's)
    If not IsTrader:

        // If the item is tradeable and not already in the transient trade slots:
        If not TradingTransaction.PlayerItemsForTrading.Contains(ItemStack.OwningSlot):

            // Add the item slot to the transient trade slots in the Trading Transaction
            NewSlot = new FInventoryItemSlot
            NewSlot.Stacks.Add(ItemStack)

            TradingTransaction.PlayerItemsForTrading.Add(NewSlot)
            Return true

        // If the item is tradeable and already in the transient trade slots:
        Else:

            // Add to the existing stack in the transient trade slots for the item
            ExistingSlot = TradingTransaction.PlayerItemsForTrading.Find(ItemStack.OwningSlot)
            ExistingSlot.Stacks.Add(ItemStack)
            Return true

        End If

    // Go Trader's path
    Else:
        

        // If the item is tradeable and not already in the transient trade slots:
        If not TradingTransaction.TraderItemsForTrading.Contains(ItemStack.OwningSlot):

            // Add the item slot to the transient trade slots in the Trading Transaction
            NewSlot = new FInventoryItemSlot
            NewSlot.Stacks.Add(ItemStack)

            TradingTransaction.TraderItemsForTrading.Add(NewSlot)
            Return true

        // If the item is tradeable and already in the transient trade slots:
        Else:

            // Add to the existing stack in the transient trade slots for the item
            ExistingSlot = TradingTransaction.TraderItemsForTrading.Find(ItemStack.OwningSlot)
            ExistingSlot.Stacks.Add(ItemStack)
            Return true

        End If

    End If

    Return false

End Function