revival/game/Assets/Scripts/Artefacts/ArtefactInventory.cs

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

[CreateAssetMenu(menuName = "KernelPanic/Artefacts/Inventory")]
public class ArtefactInventory : ScriptableObject
{
    private readonly List<Artefact> artefactList = new List<Artefact>();

    public void addA(Artefact a)
    {
        //check if duplicate in the list 
        foreach (Artefact x in artefactList)
        {
            if (x.artefactID == a.artefactID)
            {
                Debug.LogError($"{a} already exists in inventory", this);
                return;
            }
        }
        
        artefactList.Add(a);
    }
}