fix(PlayerManager): 修复本地玩家初始化逻辑

当SteamManager已初始化但LocalPlayer为空时才创建新的LocalPlayer实例，
避免重复初始化问题。

Gui/GUIStyles.cs

@@ -15,6 +15,9 @@ public static class GUIStyles
     /// <summary>普通按钮样式（fontSize=22, richText=false）</summary>
     public static GUIStyle Button;
 
+    /// <summary>被按过的按钮样式，用于标识已经进入过的房间（fontSize=22）</summary>
+    public static GUIStyle ButtonPressed;
+
     /// <summary>黄色按钮样式（已记录玩家）</summary>
     public static GUIStyle YellowButton;
 
@@ -35,6 +38,8 @@ public static class GUIStyles
 
         Label = new GUIStyle(GUI.skin.label) { fontSize = 22 };
         Button = new GUIStyle(GUI.skin.button) { fontSize = 22, richText = false };
+        ButtonPressed = new GUIStyle(GUI.skin.button) { fontSize = 22, richText = false };
+        ButtonPressed.normal.textColor = Color.grey;
 
         YellowButton = new GUIStyle(GUI.skin.button) { fontSize = 22, richText = false };
         YellowButton.normal.textColor = Color.yellow;

Gui/PlayerManagerGUI.cs

@@ -190,17 +190,24 @@ public static class PlayerManagerGUI
         for (int i = 0; i < PlayerManager.lobbyDataList.Count; i++)
         {
             CSteamID lobbyId = PlayerManager.lobbyDataList[i];
+            var style = PlayerManager.enteredLobbyList.Contains(lobbyId) ? GUIStyles.ButtonPressed : GUIStyles.Button;
+            if (PlayerManager.enteredLobbyList.Contains(lobbyId))
+
                 if (GUI.Button(
                     new Rect(Cursor.OffsetX, Cursor.LineHeight * i, 500f, 40f),
                     $"{lobbyId} 人数{SteamMatchmaking.GetNumLobbyMembers(lobbyId)}",
-                GUIStyles.Button
+                    style
                 ))
                 {
                     // 在大厅中则不加入
                     if (!PlayerManager.MatchmakingHandler.IsInsideLobby)
+                    {
+                        // 记录一下加入过的状态
+                        PlayerManager.enteredLobbyList.Add(lobbyId);
                         PlayerManager.JoinSpecificServer(lobbyId);
                     }
                 }
+        }
 
         GUI.EndScrollView();
     }

Plugin.cs

@@ -102,6 +102,11 @@ public class PlayerManager : BaseUnityPlugin
     /// </summary>
     public static List<CSteamID> lobbyDataList = [];
 
+    /// <summary>
+    /// 进入过的大厅列表
+    /// </summary>
+    public static HashSet<CSteamID> enteredLobbyList = [];
+
     /// <summary>
     /// 大厅距离过滤设置
     /// </summary>
@@ -195,7 +200,7 @@ public class PlayerManager : BaseUnityPlugin
     private void Update()
     {
         HandleInput();
-        if (SteamManager.Initialized)
+        if (SteamManager.Initialized && LocalPlayer is null)
         {
             LocalPlayer = new(SteamUser.GetSteamID());
         }
@@ -434,6 +439,7 @@ public class PlayerManager : BaseUnityPlugin
     {
         Debug.Log("大厅列表请求完成: " + result.m_nLobbiesMatching + " 个大厅");
         lobbyDataList = [];
+        enteredLobbyList = [];
         uint lobbyCount = result.m_nLobbiesMatching;
 
         for (uint i = 0; i < lobbyCount; i++)