Big update.

src/strategy/actions/AcceptBattlegroundInvitationAction.cpp

@@ -0,0 +1,24 @@
+/*
+ * 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 "AcceptBattlegroundInvitationAction.h"
+#include "Event.h"
+#include "Playerbots.h"
+
+bool AcceptBgInvitationAction::Execute(Event event)
+{
+    uint8 type = 0;                         // arenatype if arena
+    uint8 unk2 = 0;                         // unk, can be 0x0 (may be if was invited?) and 0x1
+    uint32 bgTypeId_ = BATTLEGROUND_WS;     // type id from dbc
+    uint16 unk = 0x1F90;                    // 0x1F90 constant?*/
+    uint8 action = 1;
+
+    WorldPacket packet(CMSG_BATTLEFIELD_PORT, 20);
+    packet << type << unk2 << (uint32)bgTypeId_ << unk << action;
+    //packet << bgTypeId_ << action;
+    bot->GetSession()->HandleBattleFieldPortOpcode(packet);
+
+    botAI->ResetStrategies();
+    return true;
+}