101 lines
3.2 KiB
C#
101 lines
3.2 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.UI;
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namespace Mirror.Examples.Chat
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{
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public class ChatUI : NetworkBehaviour
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{
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[Header("UI Elements")]
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[SerializeField] Text chatHistory;
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[SerializeField] Scrollbar scrollbar;
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[SerializeField] InputField chatMessage;
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[SerializeField] Button sendButton;
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// This is only set on client to the name of the local player
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internal static string localPlayerName;
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// Server-only cross-reference of connections to player names
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internal static readonly Dictionary<NetworkConnectionToClient, string> connNames = new Dictionary<NetworkConnectionToClient, string>();
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public override void OnStartServer()
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{
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connNames.Clear();
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}
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public override void OnStartClient()
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{
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chatHistory.text = "";
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}
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[Command(requiresAuthority = false)]
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void CmdSend(string message, NetworkConnectionToClient sender = null)
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{
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if (!connNames.ContainsKey(sender))
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connNames.Add(sender, sender.identity.GetComponent<Player>().playerName);
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if (!string.IsNullOrWhiteSpace(message))
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RpcReceive(connNames[sender], message.Trim());
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}
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[ClientRpc]
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void RpcReceive(string playerName, string message)
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{
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string prettyMessage = playerName == localPlayerName ?
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$"<color=red>{playerName}:</color> {message}" :
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$"<color=blue>{playerName}:</color> {message}";
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AppendMessage(prettyMessage);
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}
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void AppendMessage(string message)
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{
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StartCoroutine(AppendAndScroll(message));
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}
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IEnumerator AppendAndScroll(string message)
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{
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chatHistory.text += message + "\n";
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// it takes 2 frames for the UI to update ?!?!
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yield return null;
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yield return null;
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// slam the scrollbar down
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scrollbar.value = 0;
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}
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// Called by UI element ExitButton.OnClick
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public void ExitButtonOnClick()
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{
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// StopHost calls both StopClient and StopServer
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// StopServer does nothing on remote clients
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NetworkManager.singleton.StopHost();
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}
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// Called by UI element MessageField.OnValueChanged
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public void ToggleButton(string input)
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{
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sendButton.interactable = !string.IsNullOrWhiteSpace(input);
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}
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// Called by UI element MessageField.OnEndEdit
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public void OnEndEdit(string input)
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{
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if (Input.GetKeyDown(KeyCode.Return) || Input.GetKeyDown(KeyCode.KeypadEnter) || Input.GetButtonDown("Submit"))
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SendMessage();
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}
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// Called by OnEndEdit above and UI element SendButton.OnClick
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public void SendMessage()
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{
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if (!string.IsNullOrWhiteSpace(chatMessage.text))
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{
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CmdSend(chatMessage.text.Trim());
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chatMessage.text = string.Empty;
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chatMessage.ActivateInputField();
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}
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}
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}
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}
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