NPCWasChatWithTracker.cs

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using System.Collections.Generic;
using System.IO;
using Terraria.GameContent.NetModules;
using Terraria.ID;
using Terraria.Net;
 
namespace Terraria.GameContent.Bestiary;
 
public class NPCWasChatWithTracker : IPersistentPerWorldContent, IOnPlayerJoining
{
    private object _entryCreationLock = new object();
 
    private HashSet<string> _chattedWithPlayer;
 
    public NPCWasChatWithTracker()
    {
        _chattedWithPlayer = new HashSet<string>();
    }
 
    public void RegisterChatStartWith(NPC npc)
    {
        string bestiaryCreditId = npc.GetBestiaryCreditId();
        bool flag = !_chattedWithPlayer.Contains(bestiaryCreditId);
        lock (_entryCreationLock)
        {
            _chattedWithPlayer.Add(bestiaryCreditId);
        }
        if (Main.netMode == 2 && flag)
        {
            NetManager.Instance.Broadcast(NetBestiaryModule.SerializeChat(npc.netID));
        }
    }
 
    public void SetWasChatWithDirectly(string persistentId)
    {
        lock (_entryCreationLock)
        {
            _chattedWithPlayer.Add(persistentId);
        }
    }
 
    public bool GetWasChatWith(NPC npc)
    {
        string bestiaryCreditId = npc.GetBestiaryCreditId();
        return _chattedWithPlayer.Contains(bestiaryCreditId);
    }
 
    public bool GetWasChatWith(string persistentId)
    {
        return _chattedWithPlayer.Contains(persistentId);
    }
 
    public void Save(BinaryWriter writer)
    {
        lock (_entryCreationLock)
        {
            writer.Write(_chattedWithPlayer.Count);
            foreach (string item in _chattedWithPlayer)
            {
                writer.Write(item);
            }
        }
    }
 
    public void Load(BinaryReader reader, int gameVersionSaveWasMadeOn)
    {
        int num = reader.ReadInt32();
        for (int i = 0; i < num; i++)
        {
            string item = reader.ReadString();
            _chattedWithPlayer.Add(item);
        }
    }
 
    public void ValidateWorld(BinaryReader reader, int gameVersionSaveWasMadeOn)
    {
        int num = reader.ReadInt32();
        for (int i = 0; i < num; i++)
        {
            reader.ReadString();
        }
    }
 
    public void Reset()
    {
        _chattedWithPlayer.Clear();
    }
 
    public void OnPlayerJoining(int playerIndex)
    {
        foreach (string item in _chattedWithPlayer)
        {
            if (ContentSamples.NpcNetIdsByPersistentIds.TryGetValue(item, out var value))
            {
                NetManager.Instance.SendToClient(NetBestiaryModule.SerializeChat(value), playerIndex);
            }
        }
    }
}