Big update.

src/strategy/actions/ChangeChatAction.cpp

@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license, you may redistribute it and/or modify it under version 2 of the License, or (at your option), any later version.
+ */
+
+#include "ChangeChatAction.h"
+#include "Event.h"
+#include "Playerbots.h"
+
+bool ChangeChatAction::Execute(Event event)
+{
+    std::string const text = event.getParam();
+    ChatMsg parsed = chat->parseChat(text);
+    if (parsed == CHAT_MSG_SYSTEM)
+    {
+        std::ostringstream out;
+        out << "Current chat is " << chat->FormatChat(*context->GetValue<ChatMsg>("chat"));
+        botAI->TellMaster(out);
+    }
+    else
+    {
+        context->GetValue<ChatMsg>("chat")->Set(parsed);
+
+        std::ostringstream out;
+        out << "Chat set to " << chat->FormatChat(parsed);
+        botAI->TellMaster(out);
+    }
+
+    return true;
+}