WingSlotSupport.cs

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using System;
using System.Collections.Generic;
using Loot.Api.Cubes;
using Loot.UI;
using Loot.UI.Tabs.CraftingTab;
using Microsoft.Xna.Framework.Input;
using Terraria;
using Terraria.GameInput;
using Terraria.ModLoader;

namespace Loot.ModSupport
{
    internal class WingSlotSupport : ModSupport
    {
        public override string ModName => "WingSlot";

        public bool IsInvalid;

        // "Adds" this check for the item to be equipped into the wing slot
        // If it returns true, it stops the item being equipped
        private static bool WingSlotHandler()
            => Loot.Instance.GuiInterface?.CurrentState is GuiTabWindow tabUi
               && tabUi.Visible;

        public override bool CheckValidity(Mod mod)
        {
            IsInvalid = mod.Version < new Version(1, 6, 1);
            return !IsInvalid;
        }

        public override void AddClientSupport(Mod mod)
        {
            mod.Call("add", (Func<bool>)WingSlotHandler);
        }

        private static bool RightClickFunctionalityRequirements(Item item)
        {
            if (ModSupportTunneler.GetModSupport<WingSlotSupport>().IsInvalid && item.wingSlot > 0)
                return false;

            return !PlayerInput.WritingText
                   && Main.hasFocus
                   && Main.keyState.IsKeyDown(Keys.LeftControl)
                   && Loot.Instance.GuiInterface.CurrentState != null;
        }

        private static void SwapItems(ICraftingTab craftingTab, Item item)
        {
            craftingTab.GiveBackItems();
            craftingTab.OverrideSlottedItem(item);
        }

        public class WingSlotSupportGlobalItem : GlobalItem
        {
            // Needed to enable right click for possible items
            public override bool CanRightClick(Item item)
            {
                if (!RightClickFunctionalityRequirements(item))
                    return false;

                if (!(Loot.Instance.GuiInterface.CurrentState is GuiTabWindow ui)
                    || !(ui.GetCurrentTab() is ICraftingTab tab))
                    return false;

                return ui.Visible && tab.AcceptsItem(item);
            }

            // Auto slot item in UI if possible
            public override void RightClick(Item item, Player player)
            {
                // We need to rerun checks here because our forced right click above
                // becomes meaningless to items that can already be right clicked
                // meaning that items such as goodie bags will end up in this hook
                // regardless of our forced right click functionality in CanRightClick
                // by which we need to assume any possible item can be passed into this hook
                if (!(Loot.Instance.GuiInterface.CurrentState is GuiTabWindow ui)
                    || !(ui.GetCurrentTab() is ICraftingTab tab))
                    return;

                if (RightClickFunctionalityRequirements(item) && !(item.modItem is MagicalCube) && ui.Visible && tab.AcceptsItem(item))
                {
                    SwapItems(tab, item);
                    // else // item has innate right click or mod allows it, do nothing
                }
            }

            // Give notice how to slot
            public override void ModifyTooltips(Item item, List<TooltipLine> tooltips)
            {
                if (!(Loot.Instance.GuiInterface.CurrentState is GuiTabWindow ui)
                    || !(ui.GetCurrentTab() is ICraftingTab tab))
                    return;

                if ((ModSupportTunneler.GetModSupport<WingSlotSupport>().IsInvalid && item.wingSlot > 0) // block wings if low version if wingslot
                    || !tab.AcceptsItem(item)
                    || LootModItem.GetInfo(item).SlottedInUI)
                    return;

                var i = tooltips.FindIndex(x => x.mod.Equals("Terraria") && x.Name.Equals("ItemName"));
                if (i != -1) tooltips[i].text += " (control right click to slot into UI)";
            }
        }
    }
}