Implement money utility APIs

Part of #6

AriasServerUtils/RustyGearUtils.cs

@@ -0,0 +1,131 @@
+using System;
+using AriasServerUtils;
+using Vintagestory.API.Common;
+using Vintagestory.API.Config;
+using Vintagestory.API.Datastructures;
+using Vintagestory.API.Server;
+using Vintagestory.API.Util;
+
+public static class RustyGearUtils
+{
+
+
+    internal static string[] saveInvTypes = new string[] {
+                GlobalConstants.hotBarInvClassName,
+                GlobalConstants.backpackInvClassName,
+                GlobalConstants.craftingInvClassName,
+                GlobalConstants.mousecursorInvClassName,
+                GlobalConstants.characterInvClassName
+            };
+
+    // Replace with the correct code if it's different
+    private const string RustyGearCode = "currency-rustygear";
+
+    /// <summary>
+    /// Counts the total number of rusty gears in the player's inventory.
+    /// </summary>
+    public static int CountRustyGears(IServerPlayer player)
+    {
+        int total = 0;
+
+        player.Entity.WalkInventory((slot) =>
+        {
+            if (slot is ItemSlotCreative || !(slot.Inventory is InventoryBasePlayer)) return true;
+
+            total += CurrencyValuePerItem(slot) * slot.StackSize;
+
+            return true;
+        });
+
+        return total;
+    }
+
+    private static int CurrencyValuePerItem(ItemSlot slot)
+    {
+        JsonObject obj = slot.Itemstack?.Collectible?.Attributes?["currency"];
+        if (obj != null && obj.Exists)
+        {
+            JsonObject v = obj["value"];
+            return v.Exists ? v.AsInt(0) : 0;
+        }
+        return 0;
+    }
+    /// <summary>
+    /// Attempts to subtract a specific number of rusty gears from the player's inventory.
+    /// </summary>
+    /// <param name="player">The player.</param>
+    /// <param name="amount">How many gears to remove.</param>
+    /// <returns>True if the full amount was successfully removed, false if not enough gears.</returns>
+    public static bool SubtractRustyGears(IServerPlayer player, int amount)
+    {
+        // Check if the player has enough rusty gears
+        int currentAmount = CountRustyGears(player);
+        if (currentAmount < amount) return false;
+
+        // Subtract the specified amount of rusty gears from the player's inventory
+        player.Entity.WalkInventory((slot) =>
+        {
+            if (slot is ItemSlotCreative || !(slot.Inventory is InventoryBasePlayer)) return true;
+
+            int value = CurrencyValuePerItem(slot) * slot.StackSize;
+            if (value > 0 && slot.StackSize > 0)
+            {
+                // Calculate the amount of rusty gears to remove from this slot
+                int amountToRemove = Math.Min(value, amount);
+
+                // If the slot size is less than or equal to the amount to remove, set the slot's itemstack to null
+                if (slot.StackSize <= amountToRemove) slot.Itemstack = null;
+                else
+                {
+                    // Otherwise, subtract the amount to remove from the slot size and decrement the total amount
+                    slot.Itemstack.StackSize -= amountToRemove;
+                    amount -= amountToRemove;
+                }
+            }
+
+            // If the total amount has been removed, return true
+            if (amount <= 0) return true; // we're done
+            return true;
+        });
+
+        // If the player's inventory still contains rusty gears, they don't have enough to remove
+        return false;
+    }
+
+    public static PlayerInventory GetAllItems(IServerPlayer player)
+    {
+        PlayerInventory inv = new PlayerInventory();
+
+        var invMgr = player.InventoryManager;
+
+        var iBackpackSlotNum = 0;
+        foreach (var type in saveInvTypes)
+        {
+            foreach (var stack in invMgr.GetOwnInventory(type))
+            {
+
+                if (iBackpackSlotNum >= 4)
+                {
+                    continue;
+                }
+                if (type == GlobalConstants.backpackInvClassName)
+                {
+                    iBackpackSlotNum++;
+                }
+                if (stack.Empty) continue;
+                if (stack.Inventory.ClassName == GlobalConstants.characterInvClassName)
+                {
+                    if (stack.Itemstack.ItemAttributes?["protectionModifiers"].Exists ?? false)
+                    {
+                        inv.Items.Add(stack.Itemstack.Clone());
+                    }
+                }
+                else
+                    inv.Items.Add(stack.Itemstack.Clone());
+
+            }
+        }
+
+        return inv;
+    }
+}