Davor's questions

#include <iostream>

class Character
{
private:
    short x = -1;
    short y = -1;
};


class Luchnik : public Character
{
public:
    Luchnik(short x, short y) {
        this->x = x;
        this->y = y;
    }
private:
    short x = 0;
    short y = 0;
};


int main() {
    Luchnik *l = new Luchnik(1, 2);
    Character a();
    &a = l;

    delete l;
    return 0;
}

visual stuido 写入表达式必须有效才能更改左侧值。

这是屏幕截图

更新

或者您可以在 Luchnik 构造函数中获取一个向量指针并将 vector[x][y] 对象更改为 Luchnil

我是这样写的，但是不行，看不懂指针和类的东西

Luchnik(short x, short y, std::vector<std::vector<Character>> map) {
   this->x = x;
   this->y = y;
   Character* pm = &(map[x][y]);
   pm = *this;
} 

int main() { 
    std::vector<std::vector<Character>> board = new std::vector<std::vector<Character>>(3, std::vector<Character>(4));
    Luchnik l(1, 2, *board);
    return 0;
}

当一个玩家进入服务器时，以下代码起作用，当第一个玩家进入时一切正常，当第二个玩家进入时，它产生 * 3player(Clone);

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

public class gameManag : MonoBehaviourPunCallbacks
{
    // public Text chat;
    public GameObject PlayerPf;
    public GameObject CameraPf;
    public Managmant NAME;
    private PhotonView play;
    private Vector3[] spawn = new []{new Vector3(0f,19f,65f),new Vector3(80f,19f,65f),new Vector3(80f,-24f,65f),new Vector3(0f,-24f,65f)};
    private void Start()
    {
        PhotonNetwork.Instantiate(Path.Combine("PhotonPrefabs","player"),spawn[UnityEngine.Random.Range(0,3)],Quaternion.identity);
        // GameObject.Find("player(Clone)").name = PhotonNetwork.NickName;
        // PhotonNetwork.Instantiate(Path.Combine("PhotonPrefabs","Cam"),new Vector3(GameObject.Find(PhotonNetwork.NickName).transform.position.x,GameObject.Find(PhotonNetwork.NickName).transform.position.y,-30f),Quaternion.identity);
        // GameObject.Find("Cam(Clone)").name = PhotonNetwork.NickName+"cam";
    }
    public override void OnPlayerEnteredRoom(Player newPl)
    {
        // PhotonNetwork.Instantiate(Path.Combine("PhotonPrefabs","player"),spawn[Random.Range(0,3)],Quaternion.identity);
        // GameObject.Find("player(Clone)").name = PhotonNetwork.NickName;
        // PhotonNetwork.Instantiate(Path.Combine("PhotonPrefabs","Cam"),new Vector3(GameObject.Find(PhotonNetwork.NickName).transform.position.x,GameObject.Find(PhotonNetwork.NickName).transform.position.y,-30f),Quaternion.identity);
        // GameObject.Find("Cam(Clone)").name = PhotonNetwork.NickName+"cam";
    }
}