beyond/Assets/Scripts/Utils/ItemNotifier.cs

using System;
using System.Collections;
using System.Collections.Generic;
using PixelCrushers;
using PixelCrushers.DialogueSystem;
using UnityEngine;
using UnityEngine.Events;

namespace Beyond
{
    public class NotifierSaveData
    {
        public List<bool> found = new();

        public NotifierSaveData(List<bool> data)
        {
            found = data;
        }

        public NotifierSaveData()
        {
            found = new();
        }
    }

    public class ItemNotifier : Saver
    {
        [Serializable]
        public class ItemEvent
        {
            public int itemId;
            public float delay = 0f;
            public bool onFirstCollection = true;
            public string barkMessage;
            public AudioClip clipToPlay;
            public UnityEvent onCollected;
        }

        public List<ItemEvent> m_itemsToCollect;
        private List<bool> m_itemFound = new();

        private bItemManager m_itemManager;
        private AudioSource m_audioSource;

        public override void Awake()
        {
            base.Awake();
            m_itemManager = GetComponent<bItemManager>();
            m_itemsToCollect.ForEach(item => m_itemFound.Add(false));
            m_audioSource = GetComponent<AudioSource>();
        }

        //use one frame delay to ommit all item that are added on start
        private IEnumerator AddListenerWithDelay()
        {
            yield return new WaitForSeconds(1f);
            m_itemManager.onAddItem.AddListener(OnAddItem);
            m_itemManager.onChangeItemAmount.AddListener(OnAddItem);
            yield return null;
        }

        // Start is called before the first frame update

        public override void OnEnable()
        {
            base.OnEnable();
            StartCoroutine(AddListenerWithDelay());
        }

        public override void OnDisable()
        {
            base.OnDisable();
            StopAllCoroutines();
            m_itemManager.onAddItem.RemoveListener(OnAddItem);
            m_itemManager.onChangeItemAmount.RemoveListener(OnAddItem);
        }

        public override string RecordData()
        {
            NotifierSaveData data = new(m_itemFound);
            return JsonUtility.ToJson(data, true);
        }

        public override void ApplyData(string s)
        {
            NotifierSaveData data = new();
            JsonUtility.FromJsonOverwrite(s, data);
            if (data.found != null && data.found.Count > 0)
            {
                m_itemFound = data.found;
            }
        }

        private IEnumerator ItemCoroutine(int i)
        {
            var it = m_itemsToCollect[i];
            if (m_itemFound != null && i < m_itemFound.Count && m_itemFound[i] &&
                it.onFirstCollection)
            {
                yield return null;
            }
            else
            {
                m_itemFound[i] = true;
                if (it.delay > 0f)
                    yield return new WaitForSeconds(it.delay);
                if (!string.IsNullOrEmpty(it.barkMessage))
                {
                    DialogueManager.BarkString(it.barkMessage, Player.Instance.transform);
                }

                if (it.clipToPlay != null && m_audioSource != null)
                {
                    m_audioSource.clip = it.clipToPlay;
                    m_audioSource.Play();
                }
                it.onCollected?.Invoke();
            }
        }

        private void OnAddItem(bItem item)
        {
            for (int i = 0; i < m_itemsToCollect.Count; i++)
            {
                var it = m_itemsToCollect[i];
                if (it.itemId == item.id)
                {
                    StartCoroutine(ItemCoroutine(i));
                }
            }
        }
    }
}