Category: Blog

For this lesson on how to make our among us project multiplayer with Photon, I will show you how to synchronize the player’s animations with the Photon Animator View. This component will make it so that all the selected parameters of our Animator are the same across all clients. We will also sync the player’s direction by turning our player controller script into an observable component.

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AU_PlayerController.cs

using Photon.Pun;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;

public class AU_PlayerController : MonoBehaviour, IPunObservable
{
    [SerializeField] bool hasControl;
    public static AU_PlayerController localPlayer;
    

    //Components
    Rigidbody myRB;
    Animator myAnim;
    Transform myAvatar;
    //Player movement
    [SerializeField] InputAction WASD;
    Vector2 movementInput;
    [SerializeField] float movementSpeed;

    float direction = 1;
    //Player Color
    static Color myColor;
    SpriteRenderer myAvatarSprite;

    //Player Hat
    static Sprite myHatSprite;
    SpriteRenderer myHatHolder;

    //Role
    [SerializeField] bool isImposter;
    [SerializeField] InputAction KILL;
    float killInput;

    List<AU_PlayerController> targets;
    [SerializeField] Collider myCollider;

    bool isDead;

    [SerializeField] GameObject bodyPrefab;

    public static List<Transform> allBodies;

    List<Transform> bodiesFound;

    [SerializeField] InputAction REPORT;
    [SerializeField] LayerMask ignoreForBody;

    //Interaction
    [SerializeField] InputAction MOUSE;
    Vector2 mousePositionInput;
    Camera myCamera;
    [SerializeField] InputAction INTERACTION;
    [SerializeField] LayerMask interactLayer;

    //Networking
    PhotonView myPV;
    [SerializeField] GameObject lightMask;
    [SerializeField] lightcaster myLightCaster;



    private void Awake()
    {
        KILL.performed += KillTarget;
        INTERACTION.performed += Interact;
    }

    private void OnEnable()
    {
        WASD.Enable();
        KILL.Enable();
        REPORT.Enable();
        MOUSE.Enable();
        INTERACTION.Enable();

    }

    private void OnDisable()
    {
        WASD.Disable();
        KILL.Disable();
        REPORT.Disable();
        MOUSE.Disable();
        INTERACTION.Disable();

    }


    // Start is called before the first frame update
    void Start()
    {
        myPV = GetComponent<PhotonView>();

        if(myPV.IsMine)
        {
            localPlayer = this;
        }
        myCamera = transform.GetChild(1).GetComponent<Camera>();
        targets = new List<AU_PlayerController>();
        myRB = GetComponent<Rigidbody>();
        myAnim = GetComponent<Animator>();
        myAvatar = transform.GetChild(0);
        myAvatarSprite = myAvatar.GetComponent<SpriteRenderer>();
        myHatHolder = transform.GetChild(0).GetChild(1).GetComponent<SpriteRenderer>();
        if (!myPV.IsMine)
        {
            myCamera.gameObject.SetActive(false);
            lightMask.SetActive(false);
            myLightCaster.enabled = false;
            return;
        }
        if (myColor == Color.clear)
            myColor = Color.white;
        myAvatarSprite.color = myColor;

        if(allBodies == null)
        {
            allBodies = new List<Transform>();
        }
        bodiesFound = new List<Transform>();

        if (myHatSprite != null)
            myHatHolder.sprite = myHatSprite;
    }

    // Update is called once per frame
    void Update()
    {
        myAvatar.localScale = new Vector2(direction, 1);

        if (!myPV.IsMine)
            return;

        movementInput = WASD.ReadValue<Vector2>();
        myAnim.SetFloat("Speed", movementInput.magnitude);
        if (movementInput.x != 0)
        {
            direction = Mathf.Sign(movementInput.x);
            
        }
        

        if(allBodies.Count > 0)
        {
            BodySearch();
        }

        if(REPORT.triggered)
        {
            if (bodiesFound.Count == 0)
                return;
            Transform tempBody = bodiesFound[bodiesFound.Count - 1];
            allBodies.Remove(tempBody);
            bodiesFound.Remove(tempBody);
            tempBody.GetComponent<AU_Body>().Report();
        }

        mousePositionInput = MOUSE.ReadValue<Vector2>();
        
    }

    private void FixedUpdate()
    {
        if (!myPV.IsMine)
            return;
        myRB.velocity = movementInput * movementSpeed;
    }

    public void SetColor(Color newColor)
    {
        myColor = newColor;
        if (myAvatarSprite != null)
        {
            myAvatarSprite.color = myColor;
        }
    }

    public void SetHat(Sprite newHat)
    {
        myHatSprite = newHat;
        myHatHolder.sprite = myHatSprite;
    }

    public void SetRole(bool newRole)
    {
        isImposter = newRole;
    }

    private void OnTriggerEnter(Collider other)
    {
        if (other.tag == "Player")
        {
            AU_PlayerController tempTarget = other.GetComponent<AU_PlayerController>();
            if (isImposter)
            {
                if (tempTarget.isImposter)
                    return;
                else
                {
                    targets.Add(tempTarget);
                    
                }
            }
        }
    }

    private void OnTriggerExit(Collider other)
    {
        if (other.tag == "Player")
        {
            AU_PlayerController tempTarget = other.GetComponent<AU_PlayerController>();
            if (targets.Contains(tempTarget))
            {
                    targets.Remove(tempTarget);
            }
        }
    }

    void KillTarget(InputAction.CallbackContext context)
    {

        if (context.phase == InputActionPhase.Performed)
        {
            if (targets.Count == 0)
                return;
            else
            {
                if (targets[targets.Count - 1].isDead)
                    return;
                transform.position = targets[targets.Count - 1].transform.position;
                targets[targets.Count - 1].Die();
                targets.RemoveAt(targets.Count - 1);
            }
        }
    }

    public void Die()
    {
        AU_Body tempBody = Instantiate(bodyPrefab, transform.position, transform.rotation).GetComponent<AU_Body>();
        tempBody.SetColor(myAvatarSprite.color);

        isDead = true;

        myAnim.SetBool("IsDead", isDead);
        gameObject.layer = 9;
        myCollider.enabled = false;
    }

    void BodySearch()
    {
        foreach(Transform body in allBodies)
        {
            RaycastHit hit;
            Ray ray = new Ray(transform.position, body.position - transform.position);
            Debug.DrawRay(transform.position, body.position - transform.position, Color.cyan);
            if(Physics.Raycast(ray, out hit, 1000f, ~ignoreForBody))
            {
                
                if (hit.transform == body)
                {
                    Debug.Log(hit.transform.name);
                    Debug.Log(bodiesFound.Count);
                    if (bodiesFound.Contains(body.transform))
                        return;
                    bodiesFound.Add(body.transform);
                }
                else
                {
                    
                    bodiesFound.Remove(body.transform);
                }
            }
        }
    }

    void Interact(InputAction.CallbackContext context)
    {
        if (context.phase == InputActionPhase.Performed)
        {
            //Debug.Log("Here");
            RaycastHit hit;
            Ray ray = myCamera.ScreenPointToRay(mousePositionInput);
            if (Physics.Raycast(ray, out hit,interactLayer))
            {
                if (hit.transform.tag == "Interactable")
                {
                    AU_Interactable temp = hit.transform.GetComponent<AU_Interactable>();
                    temp.PlayMiniGame();
                }

            }
           
        }
        
    }

    public void OnPhotonSerializeView(PhotonStream stream, PhotonMessageInfo info)
    {
        if (stream.IsWriting)
        {
            stream.SendNext(direction);
        }
        else
        {
            this.direction = (float)stream.ReceiveNext();
        }
    }
}

using Photon.Chat;
using Photon.Pun;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class PhotonChatManager : MonoBehaviour, IChatClientListener
{
    #region Setup

    [SerializeField] GameObject joinChatButton;
    ChatClient chatClient;
    bool isConnected;
    [SerializeField] string username;

    public void UsernameOnValueChange(string valueIn)
    {
        username = valueIn;
    }

    public void ChatConnectOnClick()
    {
        isConnected = true;
        chatClient = new ChatClient(this);
        //chatClient.ChatRegion = "US";
        chatClient.Connect(PhotonNetwork.PhotonServerSettings.AppSettings.AppIdChat, PhotonNetwork.AppVersion, new AuthenticationValues(username));
        Debug.Log("Connenting");
    }

    #endregion Setup

    #region General

    [SerializeField] GameObject chatPanel;
    string privateReceiver = "";
    string currentChat;
    [SerializeField] InputField chatField;
    [SerializeField] Text chatDisplay;

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

    }

    // Update is called once per frame
    void Update()
    {
        if (isConnected)
        {
            chatClient.Service();
        }

        if (chatField.text != "" && Input.GetKey(KeyCode.Return))
        {
            SubmitPublicChatOnClick();
            SubmitPrivateChatOnClick();
        }
    }

    #endregion General

    #region PublicChat

    public void SubmitPublicChatOnClick()
    {
        if (privateReceiver == "")
        {
            chatClient.PublishMessage("RegionChannel", currentChat);
            chatField.text = "";
            currentChat = "";
        }
    }

    public void TypeChatOnValueChange(string valueIn)
    {
        currentChat = valueIn;
    }

    #endregion PublicChat

    #region PrivateChat

    public void ReceiverOnValueChange(string valueIn)
    {
        privateReceiver = valueIn;
    }

    public void SubmitPrivateChatOnClick()
    {
        if (privateReceiver != "")
        {
            chatClient.SendPrivateMessage(privateReceiver, currentChat);
            chatField.text = "";
            currentChat = "";
        }
    }

    #endregion PrivateChat

    #region Callbacks

    public void DebugReturn(DebugLevel level, string message)
    {
        //throw new System.NotImplementedException();
    }

    public void OnChatStateChange(ChatState state)
    {
        if(state == ChatState.Uninitialized)
        {
            isConnected = false;
            joinChatButton.SetActive(true);
            chatPanel.SetActive(false);
        }
    }

    public void OnConnected()
    {
        Debug.Log("Connected");
        joinChatButton.SetActive(false);
        chatClient.Subscribe(new string[] { "RegionChannel" });
    }

    public void OnDisconnected()
    {
        isConnected = false;
        joinChatButton.SetActive(true);
        chatPanel.SetActive(false);
    }

    public void OnGetMessages(string channelName, string[] senders, object[] messages)
    {
        string msgs = "";
        for (int i = 0; i < senders.Length; i++)
        {
            msgs = string.Format("{0}: {1}", senders[i], messages[i]);

            chatDisplay.text += "\n" + msgs;

            Debug.Log(msgs);
        }

    }

    public void OnPrivateMessage(string sender, object message, string channelName)
    {
        string msgs = "";

        msgs = string.Format("(Private) {0}: {1}", sender, message);

        chatDisplay.text += "\n " + msgs;

        Debug.Log(msgs);
        
    }

    public void OnStatusUpdate(string user, int status, bool gotMessage, object message)
    {
        throw new System.NotImplementedException();
    }

    public void OnSubscribed(string[] channels, bool[] results)
    {
        chatPanel.SetActive(true);
    }

    public void OnUnsubscribed(string[] channels)
    {
        throw new System.NotImplementedException();
    }

    public void OnUserSubscribed(string channel, string user)
    {
        throw new System.NotImplementedException();
    }

    public void OnUserUnsubscribed(string channel, string user)
    {
        throw new System.NotImplementedException();
    }

    #endregion Callbacks
}