Access UI in scene from an instance prefab

Question

Hi, I'm trying to access a UI element in my scene from an instance but not having much luck. I've managed to not get any errors with this script below but it doesn't SetActive a ui elements or pass variables back. My code on the prefab:-

public class NetworkRoomPlayerLobby : NetworkBehaviour { private Button startGameButton = null; private GameObject gameButton = null; private GameObject lobbyUI = null; private TMP_Text[] playerNameTexts = null; private TMP_Text[] playerReadyTexts = null;

     [SyncVar(hook = nameof(HandleDisplayNameChanged))]
     public string DisplayName = "Loading...";
     [SyncVar(hook = nameof(HandleReadyStatusChanged))]
     public bool IsReady = false;

     private bool isLeader;

     private void Awake()
     {            
         lobbyUI = GameObject.FindGameObjectWithTag("Panel_Lobby");
         playerNameTexts = lobbyUI.GetComponentInChildren<TMP_Text[]>();
         playerReadyTexts = lobbyUI.GetComponentInChildren<TMP_Text[]>();
         playerNameTexts = new TMP_Text[4];
         playerReadyTexts = new TMP_Text[4];
         gameButton = GameObject.FindGameObjectWithTag("StartButton");
         Button startGameButton = gameButton.GetComponentInChildren<Button>();
     }

Here is the code for the UI menu script:-

public class MainMenu : MonoBehaviour { [SerializeField] private NetworkManager networkManager;

     [Header("UI")]
     public GameObject lobbyUI = null;
     public TMP_Text[] playerNameTexts = null;
     public TMP_Text[] playerReadyTexts = null;
     public Button gameButton = null;
     [SerializeField] private GameObject landingPagePanel = null;
     

     public void HostLobby()
     {            
         networkManager.StartHost();            
         landingPagePanel.SetActive(false);            
     }        
 }

Answer 1

Answer by Cassos · Apr 28, 2020 at 07:49 PM

I personally use singletons to find scripts.

 using UnityEngine;
 
 public class FindMe : MonoBehaviour
 {
       public static FindMe singleton;
       void Awake()
       {
               singleton = this;
       }
 }

The object will be found anywhere in the scene if it exists without any performance problems.

 using UnityEngine;
         
 public class TriesToAccessFindMe : MonoBehaviour
 {
        FindMe f;
        void Start()
        {
                f = FindMe.singleton;
         }
 }

The second script shows how you find the script.

Greetings, Max

Add comment · Show 1 · Share

DJ_ELITE · Apr 29, 2020 at 12:57 PM 0

Share

Hi $$anonymous$$ax, Thank you for getting back to me it's much appreciated. I've tried your idea, not getting any errors but doesn't even set the ui to active. I must be implementing it wrong. Here is what I've done. public class $$anonymous$$ain$$anonymous$$enu : $$anonymous$$onoBehaviour { [SerializeField] private Network$$anonymous$$anager network$$anonymous$$anager; public static $$anonymous$$ain$$anonymous$$enu singleton;

     [Header("UI")]
     public GameObject tempLobbyUI = null;
     public T$$anonymous$$P_Text[] tempPlayerNameTexts = null;
     public T$$anonymous$$P_Text[] tempPlayerReadyTexts = null;
     public Button tempGameButton = null;
     [SerializeField] private GameObject landingPagePanel = null;
     public float test = 99f;
     private void Awake()
     {
         singleton = this;
     }

     public void HostLobby()
     {            
         network$$anonymous$$anager.StartHost();            
         landingPagePanel.SetActive(false);            
     }        
 }

In the other script I've put in snippets of the lines in question public class NetworkRoomPlayerLobby : NetworkBehaviour { $$anonymous$$ain$$anonymous$$enu main$$anonymous$$enu;

     [SyncVar(hook = nameof(HandleDisplayNameChanged))]
     public string DisplayName = "Loading...";
     [SyncVar(hook = nameof(HandleReadyStatusChanged))]
     public bool IsReady = false;

     private bool is$$anonymous$$er;        

     private void Start()
     {
         main$$anonymous$$enu = $$anonymous$$ain$$anonymous$$enu.singleton;            
         main$$anonymous$$enu.tempPlayerNameTexts = new T$$anonymous$$P_Text[4];
         main$$anonymous$$enu.tempPlayerReadyTexts = new T$$anonymous$$P_Text[4];            
     }

     public bool Is$$anonymous$$er
     {
         set
         {
             is$$anonymous$$er = value;
             main$$anonymous$$enu.tempGameButton.gameObject.SetActive(true);
         }
     }

public override void OnStartAuthority() { CmdSetDisplayName(PlayerNameInput.DisplayName);
main$$anonymous$$enu.tempLobbyUI.SetActive(true); }

for (int i = 0; i < main$$anonymous$$enu.tempPlayerNameTexts.Length; i++) { main$$anonymous$$enu.tempPlayerNameTexts[i].text = "Waiting For Player..."; main$$anonymous$$enu.tempPlayerReadyTexts[i].text = string.Empty; }

         for (int i = 0; i < Room.RoomPlayers.Count; i++)
         {
             main$$anonymous$$enu.tempPlayerNameTexts[i].text = Room.RoomPlayers[i].DisplayName;
             main$$anonymous$$enu.tempPlayerReadyTexts[i].text = Room.RoomPlayers[i].IsReady ?
                 "<color=green>Ready</color>" :
                 "<color=red>Not Ready</color>";
         }
     }

     public void HandleReadyToStart(bool readyToStart)
     {
         if (!is$$anonymous$$er) { return; }

         main$$anonymous$$enu.tempGameButton.interactable = readyToStart;
     }

If there is anything you can see there why this wouldn't work I'd much appreciate your help again. $$anonymous$$any thanks Chris

Access UI in scene from an instance prefab

1 Reply

Your answer

Follow this Question

Related Questions