The crafting manager shows if the crafting slots have items in them and what happens

CraftManager.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

namespace CraftingSystemRework
{
	public class CraftManager : MonoBehaviour {

		public int item1ID;
		public int item2ID;

		public bool slot1;
		public bool slot2;
		public bool ready;

		public Button craftButton;
		public Image resultImage;

		public CraftingRecipes craftingRecipes;
		public CraftResult craftResult;
		public Inventory inventory;

		GameObject item1, item2;

		public int itemResultID;

		void Awake () 
		{
			craftResult = GameObject.Find("Item Result").GetComponent<CraftResult>();
			craftingRecipes = GetComponent<CraftingRecipes>();
			inventory = GameObject.Find("_Inventory").GetComponent<Inventory>();
		}
		//updates the craft button
		void FixedUpdate ()
		{
			if(!ready)
			{
				craftButton.interactable = false;
			}
			else
			{
				craftButton.interactable = true;
			}
		}
		//receives info about what is in the crafting slots
		public void ReceiveItemsInfo (int slotID, GameObject item)
		{
			if(slotID == 0)
			{
				if(item == null)
				{
					slot1 = false;
				}
				else
				{
					slot1 = true;
					item1 = item.GetComponent<Item>().gameObject;
					item1ID = item.GetComponent<Item>().id;
				}
			}
			if(slotID == 1)
			{
				if(item == null)
				{
					slot2 = false;
				}
				else
				{
					slot2 = true;
					item2 = item.GetComponent<Item>().gameObject;
					item2ID = item.GetComponent<Item>().id;
				}
			}
			if(slot1 & slot2)
			{
				craftingRecipes.CheckRecipes(item1ID, item2ID);
			}
			else 
			{
				craftingRecipes.BrokeRecipe();
			}
		}
		//button craft calls this and this makes it look like something was crafted
		public void Craft ()
		{
			GiveItem(item2);//Reuses this item as the item you receive
			Destroy(item1);
			craftingRecipes.BrokeRecipe();
		}
		//receives the result id so you actually get the item you wanted
		public void ReceiveResultInfo (int id)
		{
			itemResultID = id;
		}
		//calls inventory to check for a place in your inventory
		void GiveItem (GameObject item)
		{
			inventory.CheckForSpace(item, itemResultID);
		}
	}
}