Keep track of current game mode (#1053)

* GetGamemode()

* GetGamemode()

* ChangeGamemode()

* GetGamemode()

* Update ChatBot.cs

code refractor

* Update Inventory.cs

Gamemode check added

* Update Protocol18.cs

* Update Protocol18.cs

* Update Protocol18.cs

code refractor

* Update IMinecraftComHandler.cs

code refractor

* Update IMinecraftComHandler.cs

* Update McTcpClient.cs

fix

* Update McTcpClient.cs

fix

* Fix duplicate gamemode event

Co-authored-by: ORelio <oreliogitantispam.l0gin@spamgourmet.com>

MinecraftClient/ChatBot.cs

@@ -837,7 +837,16 @@ namespace MinecraftClient
         {
             return Handler.GetUsername();
         }
-
+        
+        /// <summary>
+        /// Return the Gamemode of the current account
+        /// </summary>
+        /// <returns>Username of the current account</returns>
+        protected int GetGamemode()
+        {
+            return Handler.GetGamemode();
+        }
+        
         /// <summary>
         /// Return the UserUUID of the current account
         /// </summary>

MinecraftClient/Commands/Inventory.cs

@@ -42,10 +42,14 @@ namespace MinecraftClient.Commands
                                 ItemType itemType = ItemType.Stone;
                                 if (Enum.TryParse(args[2], out itemType))
                                 {
-                                    int count = int.Parse(args[3]);
+                                    if (handler.GetGamemode() == 1)
-                                    if (handler.DoCreativeGive(slot, itemType, count))
+                                    {
-                                        return "Requested " + itemType + " x" + count + " in slot #" + slot;
+                                        int count = int.Parse(args[3]);
-                                    else return "Failed to request Creative Give";
+                                        if (handler.DoCreativeGive(slot, itemType, count))
+                                            return "Requested " + itemType + " x" + count + " in slot #" + slot;
+                                        else return "Failed to request Creative Give";
+                                    }
+                                    else return "You need Gamemode Creative";
                                 }
                                 else
                                 {

MinecraftClient/McTcpClient.cs

@@ -57,6 +57,7 @@ namespace MinecraftClient
         private DateTime lastKeepAlive;
         private object lastKeepAliveLock = new object();
         private int respawnTicks = 0;
+        private int gamemode = 0;
 
         private int playerEntityID;
 
@@ -88,6 +89,7 @@ namespace MinecraftClient
         public int GetLevel() { return playerLevel; }
         public int GetTotalExperience() { return playerTotalExperience; }
         public byte GetCurrentSlot() { return CurrentSlot; }
+        public int GetGamemode() { return gamemode; }
 
         // get bots list for unloading them by commands
         public List<ChatBot> GetLoadedChatBots()
@@ -1269,14 +1271,20 @@ namespace MinecraftClient
         /// Called when the Game Mode has been updated for a player
         /// </summary>
         /// <param name="playername">Player Name</param>
-        /// <param name="uuid">Player UUID</param>
+        /// <param name="uuid">Player UUID (Empty for initial gamemode on login)</param>
         /// <param name="gamemode">New Game Mode (0: Survival, 1: Creative, 2: Adventure, 3: Spectator).</param>
         public void OnGamemodeUpdate(Guid uuid, int gamemode)
         {
-            string playerName = null;
+            // Initial gamemode on login
+            if (uuid == Guid.Empty)
+                this.gamemode = gamemode;
+
+            // Further regular gamemode change events
             if (onlinePlayers.ContainsKey(uuid))
             {
-                playerName = onlinePlayers[uuid];
+                string playerName = onlinePlayers[uuid];
+                if (playerName == this.username)
+                    this.gamemode = gamemode;
                 foreach (ChatBot bot in bots.ToArray())
                     bot.OnGamemodeUpdate(playerName, uuid, gamemode);
             }

MinecraftClient/Protocol/Handlers/Protocol18.cs

@@ -217,7 +217,7 @@ namespace MinecraftClient.Protocol.Handlers
                         handler.OnGameJoined();
                         int playerEntityID = dataTypes.ReadNextInt(packetData);
                         handler.SetPlayerEntityID(playerEntityID);
-                        dataTypes.ReadNextByte(packetData);
+                        handler.OnGamemodeUpdate(Guid.Empty, dataTypes.ReadNextByte(packetData));
                         if (protocolversion >= MC191Version)
                             this.currentDimension = dataTypes.ReadNextInt(packetData);
                         else
@@ -437,15 +437,14 @@ namespace MinecraftClient.Protocol.Handlers
                                             if (dataTypes.ReadNextBool(packetData))
                                                 dataTypes.ReadNextString(packetData);
                                         }
-                                        dataTypes.ReadNextVarInt(packetData);
+                                        handler.OnGamemodeUpdate(uuid, dataTypes.ReadNextVarInt(packetData));
                                         dataTypes.ReadNextVarInt(packetData);
                                         if (dataTypes.ReadNextBool(packetData))
                                             dataTypes.ReadNextString(packetData);
                                         handler.OnPlayerJoin(uuid, name);
                                         break;
                                     case 0x01: //Update gamemode
-                                        int gamemode = dataTypes.ReadNextVarInt(packetData);
+                                        handler.OnGamemodeUpdate(uuid, dataTypes.ReadNextVarInt(packetData));
-                                        handler.OnGamemodeUpdate(uuid, gamemode);
                                         break;
                                     case 0x02: //Update latency
                                         int latency = dataTypes.ReadNextVarInt(packetData);
@@ -1366,7 +1365,6 @@ namespace MinecraftClient.Protocol.Handlers
             catch (System.IO.IOException) { return false; }
             catch (ObjectDisposedException) { return false; }
         }
-
         public bool SendWindowAction(int windowId, int slotId, WindowActionType action, Item item)
         {
             try