beyond/Assets/Scripts/UI/ItemPanelController.cs

using Invector.vItemManager;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

namespace Beyond
{
    public class ItemPanelController : MonoBehaviour
    {
        [SerializeField]
        private Image image;

        [SerializeField]
        private Sprite defaultSprite;

        [SerializeField]
        private Button button;

        private Color transparentColor = new Color(1, 1, 1, 0.5f);
        private Color fullyVisibleColor = new Color(1, 1, 1);
        private string imagePath = "";
        public string defaultSpritePath = "";

        public bool disableObjectOnEmpty = false;

        private void OnEnable()
        {
            if (image.sprite != null)
            {
                return;
            }

            //because unloaded in menu image needs to be reloaded again, instead could also  add a bool to not remove certain elements in menu
            if (imagePath.Length > 1)
            {
                image.sprite = Resources.Load<Sprite>(imagePath);
                EnableImage();
            }
            else if (defaultSpritePath.Length > 1)
            {
                image.sprite = Resources.Load<Sprite>(defaultSpritePath);
                EnableImage();
                // image.enabled = true;
            }
        }

        private void EnableImage()
        {
            if (disableObjectOnEmpty)
            {
                gameObject.SetActive(true);
            }
            else
            {
                image.enabled = true;
            }
        }

        private void DisableImage()
        {
            if (disableObjectOnEmpty)
            {
                gameObject.SetActive(false);
            }
            else
            {
                image.enabled = false;
            }
        }

        public void SetPanelToItemImage(bItem item)
        {
            //different icon in menu and different as use button, only for weapons as of now
            if (item.secondaryIconPath.Length > 1 && (item.type == bItemType.Swords || item.type == bItemType.Axes))
            {
                // UnloadCurrentImage();
                imagePath = item.secondaryIconPath;
                image.sprite = Resources.Load<Sprite>(item.secondaryIconPath);
            }
            else
            {
                //  Debug.LogError("hej hej man");
                // UnloadCurrentImage();
                imagePath = item.iconPath;
                image.sprite = Resources.Load<Sprite>(imagePath);
            }
            EnableImage();
            //image.enabled = true;
        }

        public void SetPanelToDefaultImage(bItem removedItem)
        {
            imagePath = "";
            /// UnloadCurrentImage();
          //  image.enabled = false;
            if (defaultSpritePath.Length > 1)
            {
                image.sprite = Resources.Load<Sprite>(defaultSpritePath);
                EnableImage();
                //image.enabled = true;
            }
            else
            {
                DisableImage();
            }
        }

        private void UnloadCurrentImage()
        {
            //  Sprite spriteToUnload = image.sprite;
            // image.sprite = null;
            Resources.UnloadAsset(image.sprite);
            //Resources.UnloadUnusedAssets();
        }

        public void DisableButtonInteraction()
        {
            button.interactable = false;
            image.color = transparentColor;
        }

        public void EnableButtonInteraction()
        {
            button.interactable = true;
            image.color = fullyVisibleColor;
        }
    }
}