From 4a8fb08f4bb2037c68f166acc6ea30967c861ce2 Mon Sep 17 00:00:00 2001
From: ReinforceZwei <39955851+ReinforceZwei@users.noreply.github.com>
Date: Thu, 6 Aug 2020 21:57:23 +0800
Subject: [PATCH] Add player join/leave event to ChatBot API (#1181)

* Add player join/leave event to ChatBot API (#1180)
* Add method documentation
* Dispatch Join/Leave after updating player list
Co-authored-by: ORelio <ORelio@users.noreply.github.com>
---
 MinecraftClient/ChatBot.cs  | 14 ++++++++++++++
 MinecraftClient/McClient.cs |  4 ++++
 2 files changed, 18 insertions(+)

diff --git a/MinecraftClient/ChatBot.cs b/MinecraftClient/ChatBot.cs
index d362f4a0..d4cdf4da 100644
--- a/MinecraftClient/ChatBot.cs
+++ b/MinecraftClient/ChatBot.cs
@@ -299,6 +299,20 @@ namespace MinecraftClient
         /// <param name="inventoryId"></param>
         public virtual void OnInventoryClose(int inventoryId) { }
 
+        /// <summary>
+        /// Called when a player joined the game
+        /// </summary>
+        /// <param name="uuid">UUID of the player</param>
+        /// <param name="name">Name of the player</param>
+        public virtual void OnPlayerJoin(Guid uuid, string name) { }
+
+        /// <summary>
+        /// Called when a player left the game
+        /// </summary>
+        /// <param name="uuid">UUID of the player</param>
+        /// <param name="name">Name of the player</param>
+        public virtual void OnPlayerLeave(Guid uuid, string name) { }
+
         /* =================================================================== */
         /*  ToolBox - Methods below might be useful while creating your bot.   */
         /*  You should not need to interact with other classes of the program. */
diff --git a/MinecraftClient/McClient.cs b/MinecraftClient/McClient.cs
index e32c22be..583234d3 100644
--- a/MinecraftClient/McClient.cs
+++ b/MinecraftClient/McClient.cs
@@ -1759,6 +1759,8 @@ namespace MinecraftClient
             {
                 onlinePlayers[uuid] = name;
             }
+
+            DispatchBotEvent(bot => bot.OnPlayerJoin(uuid, name));
         }
 
         /// <summary>
@@ -1771,6 +1773,8 @@ namespace MinecraftClient
             {
                 onlinePlayers.Remove(uuid);
             }
+
+            DispatchBotEvent(bot => bot.OnPlayerLeave(uuid, onlinePlayers[uuid]));
         }
 
         /// <summary>