Inventory collection + pick up items

Unity Engine
1

Looking for tutorials for my inventory program, i have followed this and it sort for gives me what i want, but it seems abit unfinished e.g how to get items in world, image/model of items etc.

This video should be approiate

Please note i’d rather not use a free/payed unity asset, how am i going to learn?

Current results
1469566--80690--$results.png

Editor
Dropdown items
I want to make all weapons a drop down to, the way hes done it is by creating a variable for each drop-down. i plan to add tons of items in future. Also i fear it will make all items dropdown and i only want to see 1 item that i may want to edit.

Search bar
A search bar to search all items of all category’s would be very helpful

Drag drop into world
I would like to drag and drop my items into the world to be ready for the player to pickup when in game.

Item Image
I would like to add a texture to the image (its a 2D game) for the ingame world (im looking into that now, but some help would be cool)

In-game world
picking items up and storing them
I want to player to pick up the item and able to press a button if he/she wants to pick it up. i know how to do that, but i dont know to add the item to the inverotry.

Like i said this is what ive got, ive done everything in the tutorial series.

This video should be approiate

2

Current Scripts

ItemManagerInspector

using UnityEngine;
using UnityEditor;
using System.Collections;
using System.Collections.Generic;

[CustomEditor(typeof(ItemManager))]
internal class ItemManagerInspector : Editor {

	bool showingWeapons = false;
	bool showingArmor = false;
	bool showingConsumable = false;


	public override void OnInspectorGUI()
	{
		ItemManager im = target as ItemManager;

		List<Weapon> weapons = new List<Weapon>();
		List<Armor> armors = new List<Armor>();
		List<Consumable> consumables = new List<Consumable>();

		for (int i = 0; i < im.itemList.Count; i++)
		{
			if(im.itemList[i].GetType() == typeof(Weapon))
			{
				weapons.Add((Weapon)im.itemList[i]);
			}

			if(im.itemList[i].GetType() == typeof(Armor))
			{
				armors.Add((Armor)im.itemList[i]);
			}
			if(im.itemList[i].GetType() == typeof(Consumable))
			{
				consumables.Add((Consumable)im.itemList[i]);
			}

		}

		//-----------------------------------Number of ALL items----------------------------
		EditorGUILayout.LabelField ("Total Items:" + im.itemList.Count.ToString ());

		//------------------------------>>>>>>>>WEAPONS<<<<<<<<------------------------
		//-----------------------------------Number of ALL weapons----------------------------
		showingWeapons = EditorGUILayout.Foldout(showingWeapons, "weapons: " + weapons.Count.ToString());
		if(showingWeapons == true)
	
		{
			//-----------------------------------Add new weapons----------------------------
			if(GUILayout.Button("Add new Weapon"))
			{
				Weapon newWeapon = (Weapon)ScriptableObject.CreateInstance<Weapon>();
				newWeapon.name = "NEW WEAPON";
				newWeapon.description = "";
				newWeapon.cost = 0;
				newWeapon.damage = 0;
				im.itemList.Add(newWeapon);
			}

			//----------------------Displays weapons  weapon properties----------------------------
			EditorGUI.indentLevel = 2;
			//Displays all weapons in database
			for (int i = 0; i <weapons.Count; i++) 
			{
				EditorGUILayout.BeginHorizontal();

				EditorGUILayout.LabelField(weapons[i].name);

				if(GUILayout.Button("-"))
				{
					im.itemList.Remove(weapons[i]);
				}

				EditorGUILayout.EndHorizontal();

				EditorGUI.indentLevel += 1;
				weapons[i].name = EditorGUILayout.TextField("Name: ", weapons[i].name);
				weapons[i].description = EditorGUILayout.TextField("Description: ", weapons[i].description);
				weapons[i].cost = int.Parse(EditorGUILayout.TextField("Cost: ", weapons[i].cost.ToString()));
				weapons[i].damage = int.Parse(EditorGUILayout.TextField("Damage: ", weapons[i].damage.ToString()));

				EditorGUI.indentLevel -= 1;
				EditorGUILayout.Space();
			}

		

			EditorGUI.indentLevel = 0;
		}
		//--------------------------------->>>>>>>>ARMOUR<<<<<<<<---------------------------
		//--------------------------------Number of ALL armour-------------------------------
		showingArmor = EditorGUILayout.Foldout(showingArmor, "armors: " + armors.Count.ToString());
		if(showingArmor == true)
			//----------------------Displays armour  armour properties----------------------------
		{
			EditorGUI.indentLevel = 2;
			//Displays all armours in database
			for (int i = 0; i <armors.Count; i++) 
			{
				EditorGUILayout.LabelField(armors[i].name);
			}

			EditorGUI.indentLevel = 0;
		}

		showingConsumable = EditorGUILayout.Foldout(showingConsumable, "consumables: " + consumables.Count.ToString());
		if(showingConsumable == true)
		{
			EditorGUI.indentLevel = 2;
			//Displays all consumables in database
			for (int i = 0; i <consumables.Count; i++) 
			{
				EditorGUILayout.LabelField(consumables[i].name);
			}

			EditorGUI.indentLevel = 0;
		}

Item

using UnityEngine;
using System.Collections;

[System.Serializable]
public class Item : ScriptableObject{

	public int cost = 0;
	public string name = "";
	public string description = "";

}

Weapon

using UnityEngine;
using System.Collections;

[System.Serializable]
public class Weapon : Item {
	
	public int damage = 0;
	
}