Assets/Scripts/ItemSlot.cs

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



public class ItemSlot : MonoBehaviour, IDropHandler
{

    public GameObject Item
    {
        get
        {
            if (transform.childCount > 0)
            {
                return transform.GetChild(0).gameObject;
            }

            return null;
        }
    }






    public void OnDrop(PointerEventData eventData)
    {
        //if there is not item already then set our item.
        if (!Item && DragDrop.itemBeingDragged)
        {
            SoundManager.Instance.PlaySound(SoundManager.Instance.dropItemSound);

            DragDrop.itemBeingDragged.transform.SetParent(transform);
            DragDrop.itemBeingDragged.transform.localPosition = new Vector2(0, 0);

            if (transform.CompareTag("QuickSlot") == false)
            {
                DragDrop.itemBeingDragged.GetComponent<InventoryItem>().isInQuickSlot = false;
                InventorySystem.Instance.ReCalculateList();
            }
            if (transform.CompareTag("QuickSlot") == true)
            {
                DragDrop.itemBeingDragged.GetComponent<InventoryItem>().isInQuickSlot = true;
                InventorySystem.Instance.ReCalculateList();

            }

        }


    }




}