Among Us in Unity – Reporting Bodies (Lesson 8)

For this lesson on how to make Among Us in Unity, we will go over how to create the report mechanic. This makes it so the player can press a button when they see a dead body and a message will then be sent to report the body.

AU_PlayerController.cs

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

public class AU_PlayerController : MonoBehaviour
{
    [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;
    //Player Color
    [SerializeField] Color myColor;
    SpriteRenderer myAvatarSprite;

    //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;

    private void Awake()
    {
        KILL.performed += KillTarget;
        REPORT.performed += ReportBody;
    }

     

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

    }

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

    }


    // Start is called before the first frame update
    void Start()
    {
        if(hasControl)
        {
            localPlayer = this;
        }
        
        targets = new List<AU_PlayerController>();
        myRB = GetComponent<Rigidbody>();
        myAnim = GetComponent<Animator>();
        myAvatar = transform.GetChild(0);
        myAvatarSprite = myAvatar.GetComponent<SpriteRenderer>();
        if (!hasControl)
            return;
        if (myColor == Color.clear)
            myColor = Color.white;
        myAvatarSprite.color = myColor;

       
        allBodies = new List<Transform>();

        bodiesFound = new List<Transform>();
    }

    // Update is called once per frame
    void Update()
    {
        if (!hasControl)
            return;

        movementInput = WASD.ReadValue<Vector2>();
        myAnim.SetFloat("Speed", movementInput.magnitude);
        if (movementInput.x != 0)
        {
            myAvatar.localScale = new Vector2(Mathf.Sign(movementInput.x), 1);
        }



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

    }

    private void FixedUpdate()
    {
        myRB.velocity = movementInput * movementSpeed;
    }

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

    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);
            }
        }
    }

    private void KillTarget(InputAction.CallbackContext context)
    {
        if (context.phase == InputActionPhase.Performed)
        {
            //Debug.Log(targets.Count);
            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);
                }
            }
        }
    }

    private void ReportBody(InputAction.CallbackContext obj)
    {
        if (bodiesFound == null)
            return;
        if (bodiesFound.Count == 0)
            return;
        Transform tempBody = bodiesFound[bodiesFound.Count - 1];
        allBodies.Remove(tempBody);
        bodiesFound.Remove(tempBody);
        tempBody.GetComponent<AU_Body>().Report();
    }

}

AU_Body.cs

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

public class AU_Body : MonoBehaviour
{
    [SerializeField] SpriteRenderer bodySprite;

    public void SetColor(Color newColor)
    {
        bodySprite.color = newColor;
    }

    private void OnEnable()
    {
        if(AU_PlayerController.allBodies != null)
        {
            AU_PlayerController.allBodies.Add(transform);
        }
    }

    public void Report()
    {
        Debug.Log("Reported");
        Destroy(gameObject);
    }
}

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
}