CustomItem.cs

using RoR2;
using UnityEngine;
using UnityEngine.AddressableAssets;

namespace R2API;

public class CustomItem
{
    public ItemDef? ItemDef;
    public ItemDisplayRuleDict? ItemDisplayRules;

    public CustomItem(ItemDef? itemDef, ItemDisplayRule[]? itemDisplayRules)
    {
        ItemDef = itemDef;
        ItemDisplayRules = new ItemDisplayRuleDict(itemDisplayRules);
    }

    public CustomItem(ItemDef? itemDef, ItemDisplayRuleDict? itemDisplayRules)
    {
        ItemDef = itemDef;
        ItemDisplayRules = itemDisplayRules;
    }

    public CustomItem(string name, string nameToken,
        string descriptionToken, string loreToken,
        string pickupToken,
        Sprite pickupIconSprite, GameObject pickupModelPrefab,
        ItemTag[] tags, ItemTier tier,
        bool hidden,
        bool canRemove,
        UnlockableDef unlockableDef,
        ItemDisplayRule[]? itemDisplayRules)
    {
        SetupItem(name, nameToken, descriptionToken, loreToken, pickupToken, pickupIconSprite, pickupModelPrefab, tier, tags, canRemove, hidden, unlockableDef, new ItemDisplayRuleDict(itemDisplayRules));
    }

    public CustomItem(string name, string nameToken,
        string descriptionToken, string loreToken,
        string pickupToken,
        Sprite pickupIconSprite, GameObject pickupModelPrefab,
        ItemTag[] tags, ItemTier tier,
        bool hidden,
        bool canRemove,
        UnlockableDef unlockableDef,
        ItemDisplayRule[]? itemDisplayRules,
        ItemTierDef itemTierDef = null)
    {
        SetupItem(name, nameToken, descriptionToken, loreToken, pickupToken, pickupIconSprite, pickupModelPrefab, tier, tags, canRemove, hidden, unlockableDef, new ItemDisplayRuleDict(itemDisplayRules), itemTierDef);
    }

    public CustomItem(string name, string nameToken,
        string descriptionToken, string loreToken,
        string pickupToken,
        Sprite pickupIconSprite, GameObject pickupModelPrefab,
        ItemTier tier, ItemTag[] tags,
        bool canRemove,
        bool hidden,
        UnlockableDef unlockableDef = null,
        ItemDisplayRuleDict? itemDisplayRules = null)
    {
        SetupItem(name, nameToken, descriptionToken, loreToken, pickupToken, pickupIconSprite, pickupModelPrefab, tier, tags, canRemove, hidden, unlockableDef, itemDisplayRules);
    }

    public CustomItem(string name, string nameToken,
        string descriptionToken, string loreToken,
        string pickupToken,
        Sprite pickupIconSprite, GameObject pickupModelPrefab,
        ItemTier tier, ItemTag[] tags,
        bool canRemove,
        bool hidden,
        UnlockableDef unlockableDef = null,
        ItemDisplayRuleDict? itemDisplayRules = null,
        ItemTierDef itemTierDef = null)
    {
        SetupItem(name, nameToken, descriptionToken, loreToken, pickupToken, pickupIconSprite, pickupModelPrefab, tier, tags, canRemove, hidden, unlockableDef, itemDisplayRules, itemTierDef);
    }

    private void SetupItem(string name, string nameToken,
        string descriptionToken, string loreToken,
        string pickupToken,
        Sprite pickupIconSprite, GameObject pickupModelPrefab,
        ItemTier tier, ItemTag[] tags,
        bool canRemove,
        bool hidden,
        UnlockableDef unlockableDef = null,
        ItemDisplayRuleDict? itemDisplayRules = null,
        ItemTierDef itemTierDef = null)
    {

        ItemDef = ScriptableObject.CreateInstance<ItemDef>();
        ItemDef.canRemove = canRemove;
        ItemDef.descriptionToken = descriptionToken;
        ItemDef.hidden = hidden;
        ItemDef.loreToken = loreToken;
        ItemDef.name = name;
        ItemDef.nameToken = nameToken;
        ItemDef.pickupIconSprite = pickupIconSprite;
        ItemDef.pickupModelPrefab = pickupModelPrefab;
        ItemDef.pickupToken = pickupToken;
        ItemDef.tags = tags;
        ItemDef.unlockableDef = unlockableDef;
        ItemDisplayRules = itemDisplayRules;

        //If the tier isnt assigned at runtime, load tier from addressables, this should make it so mods that add items dont break.
        //We dont want to set the .tier directly, because that'll attempt to load the itemTierDef via the itemTierCatalog, and we cant
        //Guarantee said catalog has been initialized at that point
        if (tier != ItemTier.AssignedAtRuntime)
        {
            ItemDef._itemTierDef = LoadTierFromAddress(tier);
            return;
        }
        else
        {
            //If the itemTier is AssignedAtRuntime, but an itemTierDef is not assigned, default to noTier and warn the user
            if (!itemTierDef)
            {
                ItemDef._itemTierDef = null;
                ItemsPlugin.Logger.LogWarning($"Trying to create an itemDef ({name}), but the \"tier\" argument is set to {nameof(ItemTier.AssignedAtRuntime)}" +
                    $"And the argument \"itemTierDef\" is null! Resorting to setting tier to NoTier");
            }
            else
            {
                ItemDef._itemTierDef = itemTierDef;
            }
        }

    }
    private ItemTierDef LoadTierFromAddress(ItemTier itemTierToLoad)
    {
        return itemTierToLoad switch
        {
            ItemTier.Tier1 => LoadTier("RoR2/Base/Common/Tier1Def.asset"),
            ItemTier.Tier2 => LoadTier("RoR2/Base/Common/Tier2Def.asset"),
            ItemTier.Tier3 => LoadTier("RoR2/Base/Common/Tier3Def.asset"),
            ItemTier.Lunar => LoadTier("RoR2/Base/Common/LunarTierDef.asset"),
            ItemTier.Boss => LoadTier("RoR2/Base/Common/BossTierDef.asset"),
            //Void
            ItemTier.VoidTier1 => LoadTier("RoR2/DLC1/Common/VoidTier1Def.asset"),
            ItemTier.VoidTier2 => LoadTier("RoR2/DLC1/Common/VoidTier2Def.asset"),
            ItemTier.VoidTier3 => LoadTier("RoR2/DLC1/Common/VoidTier3Def.asset"),
            ItemTier.VoidBoss => LoadTier("RoR2/DLC1/Common/VoidBossDef.asset"),
            ItemTier.NoTier => null,
            ItemTier.AssignedAtRuntime => null,
            _ => null,
        };
    }

    private ItemTierDef LoadTier(string address) => Addressables.LoadAssetAsync<ItemTierDef>(address).WaitForCompletion();
}