public class BuyableItem : MonoBehaviour
{
    public float PickUpRadius = 1f;
    public InventoryItemData ItemData;

    private SphereCollider myCollider;
    
    private void Awake()
    {
        myCollider = GetComponent<SphereCollider>();
        myCollider.isTrigger = true;
        myCollider.radius = PickUpRadius;
    }

    private void OnTriggerEnter(Collider other)
    {
        var inventory = other.transform.GetComponent<InventoryHolder>();
        
        if (!inventory) return;

        if (inventory.InventorySystem.AddToInventory(ItemData, 1))
        {
            Destroy(this.gameObject);
        }
    }

    public static void UpdateDiamondText(PlayerInventory playerInventory)
    {
        InventoryUI.newDiamondText.text = playerInventory.NumberOfDiamonds.ToString();
    }
}

How would I go about fixing this issue?

Error CS0120: An object reference is required for the non-static field, method, or property 'InventoryUI.newDiamondText'

CodePudding user response：

It means the field (or method or whatever it is) newDiamondText isn’t static but you’re trying to call it using the static reference to the class InventoryUI rather than via a reference to an instance of that class.

If you meant newDiamondText to be static — i.e. there’s only one of it ever, not one for each copy of the class — you can solve the problem by marking newDiamondText as static.

Otherwise, you’ll need to access it via a reference to an instance of InventoryUI — e.g. something like (but probably not exactly) this:

InventoryUI inventoryInstance = new InventoryUI();
inventoryInstance.newDiamondText.text = playerInventory.NumberOfDiamonds.ToString();