ModifierCacheVanilla.cs

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using Loot.Api.Core;
using Loot.Hacks;
using Terraria;

namespace Loot.Caching
{
    public sealed partial class ModifierCachePlayer
    {
        private void UpdateVanityCache()
        {
            // vanity
            for (int i = 13; i < 18 + player.extraAccessorySlots; i++)
            {
                var oldEquip = _oldVanityEquips[i - 13];
                var newEquip = player.armor[i];

                // If equip slot needs an update
                if (!_forceEquipUpdate && oldEquip != null && newEquip == oldEquip)
                    continue;

                Ready = false;

                // detach old first
                if (oldEquip != null && !oldEquip.IsAir && CheatedItemHackGlobalItem.GetInfo(oldEquip).IsCheated)
                {
                    foreach (Modifier m in LootModItem.GetActivePool(oldEquip))
                    {
                        AddDetachItem(oldEquip, m);
                    }
                }

                // attach new
                if (newEquip != null && !newEquip.IsAir && CheatedItemHackGlobalItem.GetInfo(newEquip).IsCheated)
                {
                    foreach (Modifier m in LootModItem.GetActivePool(newEquip))
                    {
                        AddAttachItem(newEquip, m);
                    }
                }

                _oldVanityEquips[i - 13] = newEquip;
            }
        }

        private void UpdateHeldItemCache()
        {
            // If held item needs an update
            if (_oldSelectedItem == player.selectedItem)
                return;

            Ready = false;

            // detach old held item
            Item oldSelectedItem = player.inventory[_oldSelectedItem];
            if (oldSelectedItem != null && !oldSelectedItem.IsAir && IsMouseUsable(oldSelectedItem))
            {
                foreach (Modifier m in LootModItem.GetActivePool(oldSelectedItem))
                {
                    AddDetachItem(oldSelectedItem, m);
                }
            }

            // attach new held item
            if (player.HeldItem != null && !player.HeldItem.IsAir && IsMouseUsable(player.HeldItem))
            {
                foreach (Modifier m in LootModItem.GetActivePool(player.HeldItem))
                {
                    AddAttachItem(player.HeldItem, m);
                }
            }

            _oldSelectedItem = player.selectedItem;
        }

        private bool UpdateMouseItemCache()
        {
            // If held item needs an update
            if (_oldMouseItem != null && _oldMouseItem == Main.mouseItem)
                return false;

            Ready = false;

            // detach old mouse item
            if (_oldMouseItem != null && !_oldMouseItem.IsAir && IsMouseUsable(_oldMouseItem))
            {
                foreach (Modifier m in LootModItem.GetActivePool(_oldMouseItem))
                {
                    AddDetachItem(_oldMouseItem, m);
                }
            }

            // attach new held item
            if (Main.mouseItem != null && !Main.mouseItem.IsAir && IsMouseUsable(Main.mouseItem))
            {
                foreach (Modifier m in LootModItem.GetActivePool(player.HeldItem))
                {
                    AddAttachItem(Main.mouseItem, m);
                }
            }

            _oldMouseItem = Main.mouseItem;
            return Main.mouseItem != null && !Main.mouseItem.IsAir;
        }

        private void UpdateEquipsCache()
        {
            for (int i = 0; i < 8 + player.extraAccessorySlots; i++)
            {
                var oldEquip = _oldEquips[i];
                var newEquip = player.armor[i];

                // If equip slot needs an update
                if (!_forceEquipUpdate && oldEquip != null && newEquip == oldEquip)
                    continue;

                Ready = false;

                // detach old first
                if (oldEquip != null && !oldEquip.IsAir)
                {
                    foreach (Modifier m in LootModItem.GetActivePool(oldEquip))
                    {
                        AddDetachItem(oldEquip, m);
                    }
                }

                // attach new
                if (newEquip != null && !newEquip.IsAir)
                {
                    foreach (Modifier m in LootModItem.GetActivePool(newEquip))
                    {
                        AddAttachItem(newEquip, m);
                    }
                }

                _oldEquips[i] = newEquip;
            }
        }
    }
}