UNET notes

https://blog.csdn.net/zhangxiao13627093203/article/details/81026124

1. Want multiple clients to operate the same object , To make this object generated from the server , add to NetworkIentity and NetworkTransform Make it into prefabricated parts and put it in NetworkManager Register in

2. Empty objects add NetworkIdentity, Its bottom SeverOnly Tick meaning ： As a server application , Activate under the server , Deactivation on the client ,LocalPlayerAuthority Tick meaning ： As a client application

3. Non server players have no permission to call 【Commend】 Method , But in player Can be called , The objects generated by the server cannot be used directly by the client , It must be called through the server, that is 【Commend】 Method

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Networking;

public class Player : NetworkBehaviour
{
    private Rigidbody rb;
    public float MoveSpeed = 8; // Horizontal and vertical speeds 

 
    private Camera Camera;
    private void Awake()
    {
        rb = transform.GetComponent<Rigidbody>();
        Camera = Camera.main;
    }
    private void Update()
    {
        if (!isLocalPlayer) return;
        if (Input.GetKeyDown(KeyCode.Space))
        {

            CmdOpen_door();

        }
    }
    private void FixedUpdate()
    {
       
        if (!isLocalPlayer) return; //  If it's not a local role , Just skip. 
        Vector2 moveDir;
        //  Get the horizontal and vertical values of keyboard input , Namely 1 and -1, Represents two directions , And to the moveDir This directional variable 
        if (Input.GetAxisRaw("Horizontal") == 0 && Input.GetAxisRaw("Vertical") == 0)
        {
            moveDir.x = 0;
            moveDir.y = 0;
        }
        else
        {
            moveDir.x = Input.GetAxisRaw("Horizontal");
            moveDir.y = Input.GetAxisRaw("Vertical");
            Move(moveDir);
        }

        
    }
    private void LateUpdate()
    {
        if (!isLocalPlayer) return; //  If it's not a local role , Just skip. 
        Camera.transform.position = Vector3.Lerp(Camera.transform.position, this.transform.position + new Vector3(0, 2, -5), 5*Time.deltaTime);
       
    }
    void Move(Vector2 direction = default(Vector2))
    {
        if (direction != Vector2.zero) //  If the direction variable is not a zero vector 
        {
            transform.rotation = Quaternion.LookRotation(new Vector3(direction.x,0, direction.y)); //  Adjust the direction 
            //transform.forward It's a variable , It is the direction variable calculated according to the current direction 
            Vector3 movementDir = transform.forward * MoveSpeed * Time.deltaTime; //  The unit vector of the current direction  *  Speed  *  Time  =  The offset of the current direction   
            rb.MovePosition(rb.position + movementDir);
        }
    }
    [Command]
    public void CmdOpen_door()
    {
        if(Door_span.instance!=null)
        Door_span.instance.door.transform.Rotate(Vector3.up * 90);
    }
   

}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Networking;
/// <summary>
///  The script hangs on an empty object   And add NetworkIdentity   If you check the SeverOnly  It can be used Start  Call directly 
///  If not checked or checked LocalPlayerAuthority  Want to generate only in OnStartServer  Call in 
///  If not checked or checked LocalPlayerAuthority  If you want to generate a unique, you can also Span_door  The method is changed to 【Commend】 Method , But I don't recommend , This will make the client operate the same but have no permission to issue a warning 
/// </summary>
public class Door_span : NetworkBehaviour
{
    public static Door_span instance;
    [Header(" Door prefabrication ")]
    public GameObject door_prefab;
    [HideInInspector]
    public GameObject door;
    private void Awake()
    {
        instance = this;
        
    }
    private void Start()
    {
        //Span_door();
    }

    /// <summary>
    /// OnStartServer  Only once 
    /// </summary>
    public override void OnStartServer()
    {
        door = Instantiate(door_prefab, Vector3.zero, Quaternion.identity);// receive 
        NetworkServer.Spawn(door);
    }

    //public void Span_door()
    //{
    //    print(" Came in ");
    //door = Instantiate(door_prefab, Vector3.zero, Quaternion.identity);// receive 
    //NetworkServer.Spawn(door);
    //}

}