I'm getting an error: "AudioClip can't be deserialized because it has no default constructor"

Questions & Answers
1

I’m trying to add voice chat functionality to my multiplayer game. I’m using Mirror for the multiplayer. Unity is returning “AudioClip can’t be deserialized because it has no default constructor”, and “Weaving failed for: Library/ScriptAssemblies/Assembly-CSharp.dll”

Any suggestions would help, I don’t understand what’s causing the issue.

Here’s my code:

using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using Mirror;

public class VoiceChatManagerScript : NetworkBehaviour
{
    public string micName;

    [SyncVar(hook = nameof(PlayVoices))]
    List<Voice> currentVoices = new List<Voice>();
    [SyncVar]
    float timer = 0;

    Voice voice;

    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        
    }

    void PlayVoices(List<Voice> oldVoices, List<Voice> voices)
	{
        if (Microphone.devices.Contains(micName))
        {
            Microphone.End(micName);

            CmdSendCurrentVoice(voice);

            foreach (Voice v in voices)
            {
                AudioSource.PlayClipAtPoint(v.clip, v.position, 1f);
            }

            voice = new Voice();
            voice.position = GameObject.FindGameObjectWithTag("localPlayer").transform.position;
            voice.clip = Microphone.Start(micName, false, 1, 44100);
        }
        else
        {
            foreach (Voice voice in voices)
            {
                AudioSource.PlayClipAtPoint(voice.clip, voice.position, 1f);
            }

            Debug.Log("Unknown mic name specified, please enter the correct name.");
            Debug.Log(Microphone.devices);
        }
	}

    [Command(ignoreAuthority = true)]
    void CmdSendCurrentVoice(Voice currentVoice)
	{
        currentVoices.Add(currentVoice);
	}
}

public class Voice
{
    public AudioClip clip;
    public Vector3 position = Vector3.zero;
    public Voice() { }
}
2

I was able to figure out the problem, so for any in the future with a similar problem, I’m pretty sure what it means by deserializing is Mirror trying to turn AudioClip into a string of bits, to be sent over the internet. According to the error, apparently you can’t do that if the variable doesn’t have a constructor, which AudioClip doesn’t. A workaround for this would be to send over a float array that has the sample data, and then in a command convert that back into an AudioClip, which I have done in my new code, that works. (Also of note, the code I posted in the question has a lot of other problems with it, like doing syncvar to a list. Basically, don’t use it as example code!)