station_obscurum_unity/Assets/Scripts/Inventory/TempInventory.cs

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

[Serializable]
public class TempInventoryBuilderItem
{
    public string name;
    public int quantity;
}

public class TempInventory : MonoBehaviour
{
    [SerializeField] private List<TempInventoryBuilderItem> initialInvent = new();

    private readonly Dictionary<string, int> inventory = new();

    // Start is called before the first frame update
    private void Start()
    {
        foreach (var item in initialInvent) inventory[item.name] = item.quantity;
    }

    // Update is called once per frame
    private void Update()
    {
    }

    public int GetQuantityOf(string name)
    {
        if (inventory.ContainsKey(name)) return inventory[name];
        return 0;
    }

    public bool Add(string name, int quantity = 1)
    {
        if (inventory.ContainsKey(name))
            inventory[name] += quantity;
        else
            inventory.Add(name, quantity);
        return true;
    }

    public bool Remove(string name, int quantity = 1)
    {
        if (inventory.ContainsKey(name))
        {
            inventory[name] = Mathf.Max(inventory[name] - quantity, 0);
            return false;
        }

        return false;
    }
}