private void Awake()
    {
        transform.Find("Button").GetComponent <Button>().onClick.AddListener(() =>
        {
            int missingHealth = healthSystem.GetHealthAmountMax() - healthSystem.GetHealthAmount();
            int repairCost    = missingHealth / 2;

            ResourceAmount[] resourceAmountCost = new ResourceAmount[] { new ResourceAmount {
                                                                             resourceType = goldResourceType, amount = repairCost
                                                                         } };

            if (ResourceManager.Instance.CanAfford(resourceAmountCost))
            {
                ResourceManager.Instance.SpendResources(resourceAmountCost);
                healthSystem.FullHeal();
            }
            else
            {
                TooltipUI.Instance.Show("Cannot afford repair cost!", new TooltipUI.TooltipTimer {
                    timer = 2f
                });
            }
        });
    }