catch 22关于gameobject和OnMessage在unity/c#

Question

我试图从websocket中捕获一组数字，并用它来更新块的方向。问题是，如果我告诉它GameObject _cube = GameObject.Find("MyCube");后void Start()，那么OnMessage不知道_cube是什么。如果我尝试使用GameObject。在OnMessage中查找，然后它抱怨查找只能在主线程中使用。

我不知道如何解开这个纠结。

using UnityEngine;
using WebSocketSharp;
using WebSocketSharp.Server;
using System;

public class WS_Client : MonoBehaviour
{
public static GameObject _cube;
public class MyWebSocketServer : WebSocketBehavior
{
protected override void OnMessage(MessageEventArgs e)
{
string data = e.Data;
string[] components = data.Split(' ');
Debug.Log("splits components");
float x = float.Parse(components[0]);
float y = float.Parse(components[1]);
float z = float.Parse(components[2]);
Debug.Log("parses components");
Vector3 vector = new Vector3((float)x, (float)y, (float)z);
Debug.Log("puts them in vector3");
try
{
_cube.GetComponent<Transform>().eulerAngles = vector;
Debug.Log("rotates mycube");
//_cube.transform.eulerAngles = vector;
//           _cube?.transform.eulerAngles = vector;
}
catch (Exception ex)
{
Debug.LogError("An error occurred: " + ex.Message);
}
}
protected override void OnOpen()
{
// Handle client connection here
Debug.Log("someone connected");
}
protected override void OnClose(CloseEventArgs e)
{
// Handle client disconnection here
Debug.Log("someone disconnected");
}
}
WebSocket ws;
[SerializeField] float speed = 50.0f;
// Start is called before the first frame update
void Start()
{
GameObject _cube = GameObject.Find("MyCube");
WebSocketServer wssv = new WebSocketServer(8080);
wssv.AddWebSocketService<MyWebSocketServer>("/MyWebSocket");
wssv.Start();

}
}

Answer 1

[SOLVED]

有一个轻微的竞争条件，但这对我的目的来说是好的。基本上，回调将数据发送给句柄，而句柄只是更新一个局部变量，该局部变量在主线程中不断被用来转换我的块。

using UnityEngine;
using WebSocketSharp;
using WebSocketSharp.Server;
using System;
public class OrientationEvent
{
public event Action<Vector3> OnOrientationUpdate;
}
public class WS_Client : MonoBehaviour
{
public static GameObject _cube;
private Action<Vector3> callback;
WebSocket ws;
[SerializeField] float speed = 50.0f;
private Vector3 _orientation;
// Start is called before the first frame update
void Start()
{
_cube = GameObject.Find("MyCube");
if (_cube == null)
{
Debug.Log("couldnt find MyCube at first");
}
WebSocketServer wssv = new WebSocketServer(8080);
Action<Vector3> callback = HandleOrientationUpdate;
MyWebSocketServer wsService = new MyWebSocketServer(callback);
wssv.AddWebSocketService<MyWebSocketServer>("/MyWebSocket", () => wsService);
wssv.Start();
}
public WS_Client(OrientationEvent orientationEvent)
{
callback = HandleOrientationUpdate;
}
private void Update()
{
_cube.transform.rotation = Quaternion.Euler(_orientation);
}
private void HandleOrientationUpdate(Vector3 orientation)
{
Debug.Log("tries to rotate mycube");
Debug.Log(orientation);
// Update the cube's orientation using the data from the event
try
{
_orientation = orientation;
Debug.Log("translates the orientation");
}
catch (Exception ex)
{
Debug.LogError("An error occurred: " + ex.Message);
}

}
}
public class MyWebSocketServer : WebSocketBehavior
{
private Action<Vector3> callback;
public MyWebSocketServer(Action<Vector3> callback)
{
this.callback = callback;
}
protected override void OnMessage(MessageEventArgs e)
{
string data = e.Data;
string[] components = data.Split(' ');
Debug.Log("splits components");
float x = float.Parse(components[0]);
float y = float.Parse(components[1]);
float z = float.Parse(components[2]);
Debug.Log("parses components");
Vector3 orientation = new Vector3(x, y, z);
//        Vector3 vector = new Vector3((float)x, (float)y, (float)z);
Debug.Log("puts them in vector3");
try
{
callback?.Invoke(orientation);
Debug.Log("invokes action");
}
catch (Exception ex)
{
Debug.LogError("An error occurred: " + ex.Message);
}
}
protected override void OnOpen()
{
// Handle client connection here
Debug.Log("someone connected");
}
protected override void OnClose(CloseEventArgs e)
{
// Handle client disconnection here
Debug.Log("someone disconnected");
}
}