feat: in-game error display

Addons/GBSUGui.cs

@@ -1,3 +1,5 @@
+using System;
+using System.IO;
 using BepInEx;
 using CoreNet.Config;
 using GB.Config;
@@ -13,8 +15,11 @@ namespace GBSU.Addons;
 public class GBSUGui : MonoBehaviour
 {
     private bool menu_shown;
+    private bool error_shown;
     //private string _currentMap;
     public Rect gmenu = new(Screen.width / 2, 0, 385f, 690f);
+    public Rect error_dialog = new(Screen.width / 2, 0, 520f, 175f);
+    private string error_msg = "Unknown error!";
 
     readonly IInputSystem inputSystem = UnityInput.Current;
     string serverip = null;
@@ -83,6 +88,8 @@ Set CLI arguments: -ip, -port, -servername, -serverpassword
             if (GUI.Button(new Rect(20f, 260f, 170f, 30f), "Host"))
             {
                 if (LobbyManager.Instance.LobbyStates.SelfState == LobbyState.Game.Menu)
+                {
+                    if (File.Exists(Helper.RotationFolderPath + "config.json"))
                     {
                         hosting = true;
 
@@ -90,17 +97,35 @@ Set CLI arguments: -ip, -port, -servername, -serverpassword
 
                         Plugin.AddServerComp(); // add custom GBSU server component
                         
+                        try
+                        {
                             RotationConfig gameConfig = GBConfigLoader.LoadRotationConfig("config.json", true); // load rotation config from Config/Rotation/config.json
                             ServerConfig serverConfig = NetConfigLoader.LoadServerConfig(); // load default server config, because it can be overridden by args like -ip and -port
                             MonoSingleton<Global>.Instance.UNetManager.LaunchServer(serverConfig); // launch the server with the server config
                             MonoSingleton<Global>.Instance.UNetManager.GetComponent<GameManagerNew>().ChangeRotationConfig(gameConfig, 0); // set server's rotationconfig
                         }
+                        catch (Exception e)
+                        {
+                            PushError("Looks like you've caught a bug! Please send your log file to us :)\n" + e);
+                        }
+                    }
+                    else
+                    {
+                        PushError(@$"No config.json could be found in {Helper.RotationFolderPath}
+Make sure to download a file from the examples given and rename it to config.json.
+{Helper.FilesInRotationDir()}");
+                    }
+                }
+                else
+                {
+                    PushError("Please stay on the main menu to begin hosting. Tip: You might need to exit your lobby.");
+                }
             }
             if (GUI.Button(new Rect(195f, 260f, 170f, 30f), "Join"))
             {
                 if (LobbyManager.Instance.LobbyStates.SelfState == LobbyState.Game.Online)
                 {
-                    if (!hosting && serverip != null && serverport != 0)
+                    if (!hosting)
                     {
                         LobbyManager.Instance.LobbyStates.IP = serverip;
                         LobbyManager.Instance.LobbyStates.Port = serverport;
@@ -108,10 +133,22 @@ Set CLI arguments: -ip, -port, -servername, -serverpassword
                         LobbyManager.Instance.LocalBeasts.SetupNetMemberContext(true);
                         MonoSingleton<Global>.Instance.UNetManager.LaunchClient(serverip, serverport);
                     }
+                    else
+                    {
+                        PushError("You are currently hosting a match! Please restart the game before attempting to join.");
+                    }
+                }
+                else
+                {
+                    PushError("Failed to join lobby! Please select the Online option in-game before joining.");
+                }
+            }
+        }
+        else
+        {
+            PushError("Couldn't find the -ip CLI argument. Please refer to the documentation.");
+        }
 
-                }
-            }
-        }
         if (GUI.Button(new Rect(20f, 295f, 170f, 30f), "Cap FPS to 60"))
         {
             Application.targetFrameRate = 60;
@@ -151,6 +188,19 @@ Please refer to the documentation for more information.");
         GUI.DragWindow(new Rect(0, 0, 10000, 10000));
     }
 
+    private void ShowError(int window)
+    {
+        GUI.skin.label.alignment = TextAnchor.MiddleCenter;
+
+        GUILayout.Label(error_msg);
+
+        if (GUI.Button(new Rect(420f, 135f, 85f, 30f), "Close"))
+        {
+            error_shown = false;
+        }
+
+        GUI.DragWindow(new Rect(0, 0, 10000, 10000));
+    }
     private string UpdateScoreDisplay()
     {
         if (hosting)
@@ -165,11 +215,25 @@ Please refer to the documentation for more information.");
         return null;
     }
 
+    private void PushError(string message)
+    {
+        Plugin.Log.LogError(message);
+
+        // Push this error to the UI
+        error_msg = message;
+        error_shown = true;
+    }
+
     public void OnGUI()
     {
         if (menu_shown)
         {
             gmenu = GUILayout.Window(121, gmenu, ShowOurWindow, $"{Plugin.PluginName} [{Plugin.PluginVersion}]");
         }
+
+        if (error_shown)
+        {
+            error_dialog = GUILayout.Window(122, error_dialog, ShowError, "An error occurred!");
+        }
     }
 }

Addons/Helper.cs

@@ -1,4 +1,6 @@
 using System;
+using System.IO;
+using UnityEngine;
 using UnityEngine.Analytics;
 
 namespace GBSU.Addons;
@@ -31,4 +33,28 @@ public class Helper
             Plugin.Log.LogError("Could not create rotation folder path: " + e.Message);
         }
     }
+    public static string FilesInRotationDir()
+    {
+        // https://stackoverflow.com/a/14877330
+        DirectoryInfo d = new(RotationFolderPath);
+        FileInfo[] files = d.GetFiles();
+        int number = files.Length;
+
+        // no files?
+        if (number == 0)
+        {
+            return @"No files were found in the directory.";
+        }
+        else
+        {
+            string names = "";
+
+            foreach(FileInfo file in files)
+            {
+                names = file.Name + " " + names;
+            }
+
+            return $"There are {number} files: {names}";
+        }
+    }
 }