dd.cs

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

[CustomEditor(typeof(_Quest_Manager))]
public class _Quest_Manager_Editor : Editor {

    SerializedProperty _Quest_Manager;
    SerializedProperty _Quest_Objectives;
    _Quest_Manager db;
    ReorderableList objectivesList;
    _Quest_Objectives quest_objectives
    {
        get
        {
            return target as _Quest_Objectives;
        }
    }

    void OnEnable () {
        db = (_Quest_Manager)target;
       _Quest_Manager = serializedObject.FindProperty("_Quest_Manager");
        _Quest_Objectives = serializedObject.FindProperty("_Quest_Objectives");
        
    }

    public override void OnInspectorGUI () {

        serializedObject.Update();

        //Add/remove buttons
        GUILayout.BeginHorizontal("box");
       
        if (GUILayout.Button("Add quest"))
        {
            addQuest();
            return;
        }
           
        if (GUILayout.Button("Remove all quests"))
            removeQuests();
        GUILayout.EndHorizontal();

        GUILayout.Space(10f);
        //All quests listed
        questQueryDisplay();
    }

    void newList()
    {
        objectivesList = new ReorderableList(quest_objectives.objectives, typeof(_Objective_Element), true, false, true, true);

        objectivesList.drawElementCallback += DrawElement;
        objectivesList.onAddCallback += AddItem;
        objectivesList.onRemoveCallback += RemoveItem;
        
        objectivesList.DoLayoutList();
    }

    void questQueryDisplay()
    {
        for (int i = 0; i < db.QuestList.Count; i++)
        {

            newList();
     
        }
    }

    private void DrawElement(Rect rect, int index, bool isActive, bool isFocused)
    {
        _Objective_Element item = quest_objectives.objectives[index];

        EditorGUI.BeginChangeCheck();
        item._finished = EditorGUI.Toggle(new Rect(rect.x, rect.y, 18, rect.height), item._finished);
        item.destination = EditorGUILayout.ObjectField(item.destination, typeof(UnityEngine.Object), true);
        item.amount = EditorGUILayout.DelayedIntField(item.amount);
        if (EditorGUI.EndChangeCheck())
        {
            EditorUtility.SetDirty(target);
        }
    }

    private void AddItem(ReorderableList list)
    {
        quest_objectives.objectives.Add(new _Objective_Element());
        EditorUtility.SetDirty(target);
    }

    private void RemoveItem(ReorderableList list)
    {
        quest_objectives.objectives.RemoveAt(list.index);

        EditorUtility.SetDirty(target);
    }
}