Unity Photon 2 spawning players-CodePudding

I am having hard time to spawning players for my game, I followed Blackthornprod tutorial for multiplayer but I can't spawn players just like he do, The errors I get every time I run it is "NullReferenceException: Object reference not set to an instance of an object PlayerSpawner.Start () (at Assets/PlayerSpawner.cs:18)" and if I move the arrow to change my avatars there's new error that I see and its "DefaultPool failed to load "Player". Make sure it's in a "Resources" folder. Or use a custom IPunPrefabPool. UnityEngine.Debug:LogError (object)" and "NullReferenceException: Object reference not set to an instance of an object PlayerSpawner.Start () (at Assets/PlayerSpawner.cs:20)" idk why so here's my code for spawning players in photon 2 unity

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Photon.Pun;

public class PlayerSpawner : MonoBehaviour
{
public GameObject[] playerPrefabs;
public Transform[] spawnPoints;
public PlayerItem _playerItem;

private void Start()
{
    int randomNumber = Random.Range(0, spawnPoints.Length);
    Debug.Log("1");
    Transform spawnPoint = spawnPoints[randomNumber];
    Debug.Log("2");
    GameObject playerToSpawn = playerPrefabs[(int)PhotonNetwork.LocalPlayer.CustomProperties["playerAvatar"]];
    Debug.Log("3");
    PhotonNetwork.Instantiate(playerToSpawn.name, spawnPoint.position, Quaternion.identity);
    Debug.Log("4");
}
}

and here's the other code for players that I want to spawn

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using Photon.Pun;
using Photon.Realtime;

public class PlayerItem : MonoBehaviourPunCallbacks
{

public Text playerName;

public Color highlightColor;
public GameObject leftArrowButton;
public GameObject rightArrowButton;

ExitGames.Client.Photon.Hashtable playerProperties = new ExitGames.Client.Photon.Hashtable();
public Image playerAvatar;
public GameObject[] avatars;

Player player;

private void Start()
{
}

public void SetPlayerInfo(Player _player)
{
    playerName.text = _player.NickName;
    player = _player;
    UpdatePlayerItem(player);
}

public void ApplyLocalChanges()
{
    leftArrowButton.SetActive(true);
    rightArrowButton.SetActive(true);
}

public void OnClickLeftArrow()
{
    if ((int)playerProperties["playerAvatar"] == 0)
    {
        playerProperties["playerAvatar"] = avatars.Length - 1;
    }
    else
    {
        playerProperties["playerAvatar"] = (int)playerProperties["playerAvatar"] - 1;
    }
    PhotonNetwork.SetPlayerCustomProperties(playerProperties);
}

public void OnClickRightArrow()
{
    if ((int)playerProperties["playerAvatar"] == avatars.Length - 1)
    {
        playerProperties["playerAvatar"] = 0;
    }
    else
    {
        playerProperties["playerAvatar"] = (int)playerProperties["playerAvatar"]   1;
    }
    PhotonNetwork.SetPlayerCustomProperties(playerProperties);
}

public override void OnPlayerPropertiesUpdate(Player targetPlayer, ExitGames.Client.Photon.Hashtable changedProps)
{
    if (player == targetPlayer)
    {
        UpdatePlayerItem(targetPlayer);
    }
}

void UpdatePlayerItem(Player player)
{
    if (player.CustomProperties.ContainsKey("playerAvatar"))
    {
        playerAvatar.sprite = avatars[(int)player.CustomProperties["playerAvatar"]].GetComponent<SpriteRenderer>().sprite;
        playerProperties["playerAvatar"] = (int)player.CustomProperties["playerAvatar"];
    }
    else
    {
        playerProperties["playerAvatar"] = 0;
    }
}
}

also last thing if you ever need this but idk if this is needed or relevant but here's the code that will deliver my player to the next scene where I need it to spawn

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Photon.Pun;
using Photon.Realtime;
using UnityEngine.UI;

public class LobbyManager : MonoBehaviourPunCallbacks
{
public InputField roomInputField;
public GameObject lobbyPanel;
public GameObject roomPanel;
public Text roomName;

public RoomItem roomItemPrefab;
public List<RoomItem> roomItemList = new List<RoomItem>();
public Transform contentObject;

public float timeBetweenUpdates = 1.5f;
float nextUpdateTime;

public List<PlayerItem> playerItemsList = new List<PlayerItem>();
public PlayerItem playerItemPrefab;
public Transform playerItemParent;

public GameObject playButton;

private void Start()
{
    PhotonNetwork.JoinLobby();
}

public void OnClickCreate()
{
    if (roomInputField.text.Length >= 1)
    {
        PhotonNetwork.CreateRoom(roomInputField.text, new RoomOptions() { MaxPlayers = 10, BroadcastPropsChangeToAll = true });
    }
}

public override void OnJoinedRoom()
{
    lobbyPanel.SetActive(false);
    roomPanel.SetActive(true);
    roomName.text = "Room: "   PhotonNetwork.CurrentRoom.Name;
    UpdatePlayerList();
}

public override void OnRoomListUpdate(List<RoomInfo> roomList)
{
    if (Time.time >= nextUpdateTime)
    {
        UpdateRoomList(roomList);
        nextUpdateTime = Time.time   timeBetweenUpdates;
    }
}

void UpdateRoomList(List<RoomInfo> list)
{
    foreach (RoomItem item in roomItemList)
    {
        Destroy(item.gameObject);
    }
    roomItemList.Clear();

    foreach (RoomInfo room in list)
    {
        RoomItem newRoom = Instantiate(roomItemPrefab, contentObject);
        newRoom.SetRoomName(room.Name);
        roomItemList.Add(newRoom);
    }
}

public void JoinRoom(string roomName)
{
    PhotonNetwork.JoinRoom(roomName);
}

public void OnClickLeaveRoom()
{
    PhotonNetwork.LeaveRoom();
}

public override void OnLeftRoom()
{
    lobbyPanel.SetActive(true);
    roomPanel.SetActive(false);
}

public override void OnConnectedToMaster()
{
    PhotonNetwork.JoinLobby();
}

void UpdatePlayerList()
{
    foreach (PlayerItem item in playerItemsList)
    {
        Destroy(item.gameObject);
    }
    playerItemsList.Clear();

    if (PhotonNetwork.CurrentRoom == null)
    {
        return;
    }
    
    foreach (KeyValuePair<int, Player> player in PhotonNetwork.CurrentRoom.Players)
    {
        PlayerItem newPlayerItem = Instantiate(playerItemPrefab, playerItemParent);
        newPlayerItem.SetPlayerInfo(player.Value);

        if (player.Value == PhotonNetwork.LocalPlayer)
        {
            newPlayerItem.ApplyLocalChanges();
        }

        playerItemsList.Add(newPlayerItem);
    }
}

public override void OnPlayerEnteredRoom(Player newPlayer)
{
    UpdatePlayerList();
}

public override void OnPlayerLeftRoom(Player otherPlayer)
{
    UpdatePlayerList();
}

private void Update()
{
    if (PhotonNetwork.IsMasterClient && PhotonNetwork.CurrentRoom.PlayerCount >= 1)
    {
        playButton.SetActive(true);
    }
    else
    {
        playButton.SetActive(false);
    }
}

public void OnClickPlayButton()
{
    PhotonNetwork.LoadLevel("Game");
}
}

Thank you in advance if you ever decided to help me! I will put you in Credits of my game as payment, Thank youuuuu

CodePudding user response：

There are three problems.

Replace MonoBehviour with MonoBehviourPun.
Add all the prefabs contained in the "PlayerPrefabs" list into a folder called "Resources". All prefabs that PUN needs to instantiate must be in a folder with this name, or it will not be able to instantiate them. The prefabs to be instantiated must also have a PhotonView component.
There is no property called "PlayerAvatar". You can create one at the beginning of the game by assigning it a default value, such as 0. In the LobbyManager class, modify the start () method.

So it will work.

Good work!