mmorpg2d/Assets/Script/Inventory/ItemInventory.cs

using System.Collections;
using System.Collections.Generic;
using Unity.VisualScripting;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

public class ItemInventory : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler, IPointerClickHandler
{
    public item item;
    [HideInInspector]
    public Transform parentAfterDrag;

    public Image image;

    InventoryManager inventoryManager = new InventoryManager();
   
    public void Set(item newItem, InventoryManager man)
    {
        inventoryManager = man;
        Debug.Log("Setting new item to this slot " + newItem.type, gameObject); 
        item = newItem;
        image.sprite = newItem.image;   
    }


    public void Clear()
    {

        // UnityEditor.EditorApplication.delayCall += () =>
        // {
        //     DestroyImmediate(gameObject);
        // };
    }

    public void Drop()
    {
        inventoryManager.
        DropItem(item);
        Destroy(gameObject);
    }

    public void OnBeginDrag(PointerEventData eventData)
    {
        image.raycastTarget = false;
        parentAfterDrag = transform.parent;
        transform.SetParent(transform.parent.parent.parent.parent);
    }



    public void OnDrag(PointerEventData eventData)
    {
        transform.position = eventData.position;
    }

    public void OnEndDrag(PointerEventData eventData)
    {
        Debug.Log("Dropping into " + parentAfterDrag.name, parentAfterDrag.gameObject);
        if(parentAfterDrag == transform.parent)
        {
            Destroy(gameObject);
        }
        image.raycastTarget = true;        
        transform.SetParent(parentAfterDrag);
    }

    public void OnPointerClick(PointerEventData eventData)
    {

        //inventoryManager.SelectItem(item);
        if (item.isUsable == false)return;
        if (inventoryManager.UseItem(item))
        {
            Destroy(gameObject);
        }
    }
}