c# - 服务器端的 UNET SyncVar 未更新

Question

我正在尝试使用 SyncVar，但我不完全理解我做错了什么，如果我做错了。情况如下：

1. 我有两个公共 SyncVar：redFunds 和 blueFunds 以及两个本地“旧”版本进行比较

2. 我使用 Cmd_UpdateXxx 在 Start 中启动 SyncVar，它有效

3. 我有两个按钮，每个 SyncVar 一个

4. 在更新中，我比较了 SyncVar 与 oldXxxFunds。如果命中我会在现场显示

当我运行代码时，它确实在两个播放器（红色和蓝色）的场景上显示了正确的数字，但是在查看“公共”SyncVar 时，这并没有完全反映在编辑器中。当按下红色按钮时，它在编辑器中只反映在红色播放器上，而不是蓝色播放器上。

有人可以向我解释我在这里做错了什么吗？...如果我做错了什么。我不应该也看到编辑器中的更改吗？

[SyncVar] public int redFunds;
[SyncVar] public int blueFunds;
public int oldRedFunds;
public int oldBlueFunds;

private void Start () 
{

    if (!isLocalPlayer)
        return;

    Cmd_UpdateRed (10);
    Cmd_UpdateBlue (20);
}

// Button
void btn_Red () 
{
    if (!hasAuthority)
        return;

    Cmd_UpdateRed (10000);
}

void btn_Blue () 
{
    if (!hasAuthority)
        return;

    Cmd_UpdateBlue (20000);
}

[Command]
void Cmd_UpdateRed (int _value) 
{
    redFunds = _value;
}

[Command]
void Cmd_UpdateBlue (int _value) 
{
    blueFunds = _value;
}

void Update () 
{
    if (redFunds != oldRedFunds) 
    {
        txt_RedTotalFunds = GameObject.Find ("txt_RedTotalFunds").GetComponent<Text> ();
        txt_RedTotalFunds.text = "$" + redFunds;
        oldRedFunds = redFunds;
    }

    if (blueFunds != oldBlueFunds) 
    {
        txt_BlueTotalFunds = GameObject.Find ("txt_BlueTotalFunds").GetComponent<Text> ();
        txt_BlueTotalFunds.text = "$" + blueFunds;
        oldBlueFunds = blueFunds;
    }
}

Answer 1

我能想到的最好方法是使用 GameRoomInfo 作为服务器拥有的网络对象。

可以使用 2 个简单的脚本来完成，如下所示：

GameRoomInfo 脚本

using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UI;
using System.Collections;

public class GameRoomInfo : NetworkBehaviour
{
    public Text txt_RedTotalFunds;
    public Text txt_BlueTotalFunds;

    public int oldRedFunds = 0;
    public int oldBlueFunds = 0;

    [SyncVar]
    public int redFunds;
    [SyncVar]
    public int blueFunds;

    void Update()
    {
        if (redFunds != oldRedFunds)
        {
            //txt_RedTotalFunds = GameObject.Find("txt_RedTotalFunds").GetComponent<Text>();
            txt_RedTotalFunds.text = "$" + redFunds;
            Debug.Log("Red - $" + redFunds);
            oldRedFunds = redFunds;
        }

        if (blueFunds != oldBlueFunds)
        {
            //txt_BlueTotalFunds = GameObject.Find("txt_BlueTotalFunds").GetComponent<Text>();
            txt_BlueTotalFunds.text = "$" + blueFunds;
            Debug.Log("Blue - $" + blueFunds);
            oldBlueFunds = blueFunds;
        }
    }
}

播放器脚本

using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UI;
using System.Collections;

public class Player : NetworkBehaviour 
{
    public enum PlayerColor
    { 
        Red, 
        Blue
    };

    //used to update the right variables (Blue player updates blueFunds and Red player updates redFunds)
    [SyncVar]
    PlayerColor playerColor;

    static int colorSelect = 0;

    void Start()
    {
        if(isServer) 
        {
            // the server selects the player color when created
            switch(colorSelect % 2)
            {
                case 0:
                    playerColor = PlayerColor.Red;
                    break;
                case 1:
                    playerColor = PlayerColor.Blue;
                    break;
            }

            colorSelect++;
        }
    }

    void Update()
    {
        if (!isLocalPlayer)
            return;

        if (hasAuthority && Input.GetKeyDown(KeyCode.KeypadPlus))
        {
            Cmd_UpdateAdd(10);
        }
    }

    // Button
    void btn_Update()
    {
        if (!hasAuthority)
            return;

        Cmd_Update(0);
    }

    void btn_Add()
    {
        if (!hasAuthority)
            return;

        Cmd_Update(10);
    }


    [Command]
    public void Cmd_Update(int _value)//The command updates the GameRoomInfo variables according to the player color
    {
        switch (playerColor)
        {
            case PlayerColor.Red:
                FindObjectOfType<GameRoomInfo>().redFunds = _value;
                break;

            case PlayerColor.Blue:
                FindObjectOfType<GameRoomInfo>().blueFunds = _value;
                break;

            default:
                break;
        }
    }

    [Command]
    public void Cmd_UpdateAdd(int _value)
    {
        switch (playerColor)
        {
            case PlayerColor.Red:
                FindObjectOfType<GameRoomInfo>().redFunds += _value;
                break;

            case PlayerColor.Blue:
                FindObjectOfType<GameRoomInfo>().blueFunds += _value;
                break;

            default:
                break;
        }
    }
}

我做了一些小改动来帮助测试。随意适应您的需求。