In this lesson on how to make Among Us in Unity, we will go over building the environment and level design. This is fairly easy to do as most of the level is already created with the background image that we have added to our project. Now if you are creating your own original game then you will need to create your own background image. Once you have your background or map created and added to your scene you will need to create the walls. These are just 3D cubes with the wall tag and layer and you will need to resize and reposition these objects so they are overlapping all the walls of your map.
Next, you will need to create the objects in your scene that the player can not walk through but do not cast shadows. These are also 3D objects with colliders but are set to a layer that does not cast shadows and that our raycast ignores.
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.
Unlock Code and Member Content
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
}
In this lesson on how to create Among Us in Unity, I will show you how to get the same lighting effect as what we created in the last lesson only this time we will use the new 2D lights from the Universal Render Pipeline. Using this option is good because it is much more precise and optimized. The downside to using this system is that it is still listed as Experimental and there is no real way that I know of to mask the players in the shadows without turning the shadow intensity up all the way.
The first thing that we will do in our project is to reset the hierarchy to the way it was before the last video. We will then need to implement the Universal Render Pipeline. first, install the package from the package manager. Then you will need to create a Pipeline Asset and a 2D renderer. After which you will need to apply the 2D renderer to the pipeline asset and finally you will need to apply the pipeline to the graphics setting in the project settings.
Next, we can add a 2D point light to our scene which I have added our player prefab. the Final thing that you will need to do is add Shadow Caster scripts to our wall objects.
