ClientMods/MunitionsExpert/Plugin.cs

using Aki.Reflection.Patching;
using BepInEx;
using BepInEx.Configuration;
using EFT.HandBook;
using EFT.InventoryLogic;
using EFT.UI;
using EFT.UI.DragAndDrop;
using System;
using System.Collections.Generic;
using System.Reflection;
using UnityEngine;

namespace IcyClawz.MunitionsExpert
{
    [BepInPlugin("com.IcyClawz.MunitionsExpert", "IcyClawz.MunitionsExpert", "1.2.0")]
    public class Plugin : BaseUnityPlugin
    {
        internal static ConfigEntry<bool> ColorizeItemBackgrounds;

        private void Awake()
        {
            ColorizeItemBackgrounds = Config.Bind("General", "Colorize Icon Backgrounds", true);
            IconCache.Initialize();
            new StaticIconsPatch().Enable();
            new AmmoTemplatePatch().Enable();
            new ItemViewPatch().Enable();
            new EntityIconPatch().Enable();
        }
    }

    internal class StaticIconsPatch : ModulePatch
    {
        protected override MethodBase GetTargetMethod() =>
            typeof(StaticIcons).GetMethod("GetAttributeIcon", BindingFlags.Public | BindingFlags.Instance);

        [PatchPrefix]
        private static bool PatchPrefix(ref Sprite __result, Enum id)
        {
            var icon = IconCache.Get(id);
            if (icon != null)
            {
                __result = icon;
                return false;
            }
            return true;
        }
    }

    internal class AmmoTemplatePatch : ModulePatch
    {
        protected override MethodBase GetTargetMethod() =>
            typeof(AmmoTemplate).GetMethod("GetCachedReadonlyQualities", BindingFlags.Public | BindingFlags.Instance);

        [PatchPrefix]
        private static bool PatchPrefix(ref List<ItemAttributeClass> __result, AmmoTemplate __instance)
        {
            if (__instance.GetCachedQualities() != null)
            {
                __result = null;
                return false;
            }
            return true;
        }

        [PatchPostfix]
        private static void PatchPostfix(ref List<ItemAttributeClass> __result, AmmoTemplate __instance)
        {
            if (__result == null)
            {
                __result = __instance.GetCachedQualities();
                return;
            }
            __instance.AddExtraAttributes();
        }
    }

    internal class ItemViewPatch : ModulePatch
    {
        protected override MethodBase GetTargetMethod() =>
            typeof(ItemView).GetMethod("UpdateColor", BindingFlags.NonPublic | BindingFlags.Instance);

        [PatchPrefix]
        private static void PatchPrefix(ref ItemView __instance)
        {
            if (Plugin.ColorizeItemBackgrounds.Value)
            {
                __instance.OverrideColor(__instance.Item);
            }
        }
    }

    internal class EntityIconPatch : ModulePatch
    {
        protected override MethodBase GetTargetMethod() =>
            typeof(EntityIcon).GetMethod("Show", BindingFlags.Public | BindingFlags.Instance);

        [PatchPostfix]
        private static void PatchPostfix(ref EntityIcon __instance, Item item)
        {
            if (Plugin.ColorizeItemBackgrounds.Value)
            {
                __instance.OverrideColor(item);
            }
        }
    }
}